Merge branch 'master' into 2020-08-19-firelocks

# Conflicts:
#	Content.Server/GameObjects/Components/Doors/ServerDoorComponent.cs
#	Content.Shared/Maps/TurfHelpers.cs
#	SpaceStation14.sln.DotSettings

Content.Client/EntryPoint.cs

@@ -18,6 +18,7 @@ using Content.Shared.GameObjects.Components.Chemistry.ChemMaster;
 using Content.Shared.GameObjects.Components.Chemistry.ReagentDispenser;
 using Content.Shared.GameObjects.Components.Gravity;
 using Content.Shared.GameObjects.Components.Markers;
+using Content.Shared.GameObjects.Components.Power.AME;
 using Content.Shared.GameObjects.Components.Research;
 using Content.Shared.GameObjects.Components.VendingMachines;
 using Content.Shared.Kitchen;
@@ -72,6 +73,7 @@ namespace Content.Client
             factory.Register<SharedChemMasterComponent>();
             factory.Register<SharedMicrowaveComponent>();
             factory.Register<SharedGravityGeneratorComponent>();
+            factory.Register<SharedAMEControllerComponent>();
 
             prototypes.RegisterIgnore("material");
             prototypes.RegisterIgnore("reaction"); //Chemical reactions only needed by server. Reactions checks are server-side.

Content.Client/GameObjects/Components/AcceptCloningBoundUserInterface.cs

@@ -0,0 +1,45 @@
+using Content.Shared.GameObjects.Components;
+using JetBrains.Annotations;
+using Robust.Client.GameObjects.Components.UserInterface;
+
+namespace Content.Client.GameObjects.Components
+{
+    [UsedImplicitly]
+    public class AcceptCloningBoundUserInterface : BoundUserInterface
+    {
+
+        public AcceptCloningBoundUserInterface(ClientUserInterfaceComponent owner, object uiKey) : base(owner, uiKey)
+        {
+        }
+
+        private AcceptCloningWindow _window;
+
+        protected override void Open()
+        {
+            base.Open();
+
+            _window = new AcceptCloningWindow();
+            _window.OnClose += Close;
+            _window.DenyButton.OnPressed += _ => _window.Close();
+            _window.ConfirmButton.OnPressed += _ =>
+            {
+                SendMessage(
+                    new SharedAcceptCloningComponent.UiButtonPressedMessage(
+                        SharedAcceptCloningComponent.UiButton.Accept));
+                _window.Close();
+            };
+            _window.OpenCentered();
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            base.Dispose(disposing);
+
+            if (disposing)
+            {
+                _window?.Dispose();
+            }
+        }
+
+    }
+}

Content.Client/GameObjects/Components/AcceptCloningWindow.cs

@@ -0,0 +1,50 @@
+#nullable enable
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Shared.Localization;
+
+namespace Content.Client.GameObjects.Components
+{
+    public sealed class AcceptCloningWindow : SS14Window
+    {
+        public readonly Button DenyButton;
+        public readonly Button ConfirmButton;
+
+        public AcceptCloningWindow()
+        {
+
+            Title = Loc.GetString("Cloning Machine");
+
+            Contents.AddChild(new VBoxContainer
+            {
+                Children =
+                {
+                    new VBoxContainer
+                    {
+                        Children =
+                        {
+                            (new Label
+                            {
+                                Text = Loc.GetString("You are being cloned! Transfer your soul to the clone body?")
+                            }),
+                            new HBoxContainer
+                            {
+                                Children =
+                                {
+                                    (ConfirmButton = new Button
+                                    {
+                                        Text = Loc.GetString("Yes"),
+                                    }),
+                                    (DenyButton = new Button
+                                    {
+                                        Text = Loc.GetString("No"),
+                                    })
+                                }
+                            },
+                        }
+                    },
+                }
+            });
+        }
+    }
+}

Content.Client/GameObjects/Components/Actor/CharacterInterface.cs

@@ -2,6 +2,7 @@
 using System.Linq;
 using Content.Client.GameObjects.Components.Mobs;
 using Content.Client.UserInterface;
+using Content.Shared.GameObjects.Components.Mobs;
 using Content.Shared.Input;
 using Robust.Client.GameObjects;
 using Robust.Client.Interfaces.Input;

Content.Client/GameObjects/Components/Atmos/PipeVisualizer.cs

@@ -0,0 +1,68 @@
+using Content.Shared.GameObjects.Components.Atmos;
+using JetBrains.Annotations;
+using Robust.Client.GameObjects;
+using Robust.Client.Interfaces.GameObjects.Components;
+using Robust.Client.Graphics;
+using Robust.Client.Interfaces.ResourceManagement;
+using Robust.Client.ResourceManagement;
+using Robust.Shared.GameObjects.Components.Renderable;
+using Robust.Shared.IoC;
+using Robust.Shared.Log;
+using Robust.Shared.Utility;
+using System;
+using YamlDotNet.RepresentationModel;
+
+namespace Content.Client.GameObjects.Components.Atmos
+{
+    [UsedImplicitly]
+    public class PipeVisualizer : AppearanceVisualizer
+    {
+        private RSI _pipeRSI;
+
+        public override void LoadData(YamlMappingNode node)
+        {
+            base.LoadData(node);
+
+            var rsiString = node.GetNode("pipeRSI").ToString();
+            var rsiPath = SharedSpriteComponent.TextureRoot / rsiString;
+            try
+            {
+                var resourceCache = IoCManager.Resolve<IResourceCache>();
+                var resource = resourceCache.GetResource<RSIResource>(rsiPath);
+                _pipeRSI = resource.RSI;
+            }
+            catch (Exception e)
+            {
+                Logger.ErrorS("go.pipevisualizer", "Unable to load RSI '{0}'. Trace:\n{1}", rsiPath, e);
+            }
+        }
+
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+
+            if (!component.Owner.TryGetComponent(out ISpriteComponent sprite))
+            {
+                return;
+            }
+            if (!component.TryGetData(PipeVisuals.VisualState, out PipeVisualStateSet pipeVisualStateSet))
+            {
+                return;
+            }
+            for (var i = 0; i < pipeVisualStateSet.PipeVisualStates.Length; i++)
+            {
+                var pipeVisualState = pipeVisualStateSet.PipeVisualStates[i];
+                var rsiState = "pipe";
+                rsiState += pipeVisualState.PipeDirection.ToString();
+                rsiState += ((int) pipeVisualState.ConduitLayer).ToString();
+
+                var pipeLayerKey = "pipeLayer" + i.ToString();
+                sprite.LayerMapReserveBlank(pipeLayerKey);
+                var currentPipeLayer = sprite.LayerMapGet(pipeLayerKey);
+                sprite.LayerSetRSI(currentPipeLayer, _pipeRSI);
+                sprite.LayerSetState(currentPipeLayer, rsiState);
+                sprite.LayerSetVisible(currentPipeLayer, true);
+            }
+        }
+    }
+}

Content.Client/GameObjects/Components/Atmos/PumpVisualizer.cs

@@ -0,0 +1,85 @@
+using Content.Shared.GameObjects.Atmos;
+using JetBrains.Annotations;
+using Robust.Client.GameObjects;
+using Robust.Client.Graphics;
+using Robust.Client.Interfaces.GameObjects.Components;
+using Robust.Client.Interfaces.ResourceManagement;
+using Robust.Client.ResourceManagement;
+using Robust.Shared.GameObjects.Components.Renderable;
+using Robust.Shared.IoC;
+using Robust.Shared.Log;
+using Robust.Shared.Utility;
+using System;
+using YamlDotNet.RepresentationModel;
+
+namespace Content.Client.GameObjects.Components.Atmos
+{
+    [UsedImplicitly]
+    public class PumpVisualizer : AppearanceVisualizer
+    {
+        private RSI _pumpRSI;
+
+        public override void LoadData(YamlMappingNode node)
+        {
+            base.LoadData(node);
+
+            var rsiString = node.GetNode("pumpRSI").ToString();
+            var rsiPath = SharedSpriteComponent.TextureRoot / rsiString;
+            try
+            {
+                var resourceCache = IoCManager.Resolve<IResourceCache>();
+                var resource = resourceCache.GetResource<RSIResource>(rsiPath);
+                _pumpRSI = resource.RSI;
+            }
+            catch (Exception e)
+            {
+                Logger.ErrorS("go.pumpvisualizer", "Unable to load RSI '{0}'. Trace:\n{1}", rsiPath, e);
+            }
+        }
+
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+
+            if (!component.Owner.TryGetComponent(out ISpriteComponent sprite))
+            {
+                return;
+            }
+            if (!component.TryGetData(PumpVisuals.VisualState, out PumpVisualState pumpVisualState))
+            {
+                return;
+            }
+            var pumpBaseState = "pump";
+            pumpBaseState += pumpVisualState.InletDirection.ToString();
+            pumpBaseState += ((int) pumpVisualState.InletConduitLayer).ToString();
+            pumpBaseState += pumpVisualState.OutletDirection.ToString();
+            pumpBaseState += ((int) pumpVisualState.OutletConduitLayer).ToString();
+
+            sprite.LayerMapReserveBlank(Layer.PumpBase);
+            var basePumpLayer = sprite.LayerMapGet(Layer.PumpBase);
+            sprite.LayerSetRSI(basePumpLayer, _pumpRSI);
+            sprite.LayerSetState(basePumpLayer, pumpBaseState);
+            sprite.LayerSetVisible(basePumpLayer, true);
+
+
+
+            var pumpEnabledAnimationState = "pumpEnabled";
+            pumpEnabledAnimationState += pumpVisualState.InletDirection.ToString();
+            pumpEnabledAnimationState += ((int) pumpVisualState.InletConduitLayer).ToString();
+            pumpEnabledAnimationState += pumpVisualState.OutletDirection.ToString();
+            pumpEnabledAnimationState += ((int) pumpVisualState.OutletConduitLayer).ToString();
+
+            sprite.LayerMapReserveBlank(Layer.PumpEnabled);
+            var pumpEnabledAnimationLayer = sprite.LayerMapGet(Layer.PumpEnabled);
+            sprite.LayerSetRSI(pumpEnabledAnimationLayer, _pumpRSI);
+            sprite.LayerSetState(pumpEnabledAnimationLayer, pumpEnabledAnimationState);
+            sprite.LayerSetVisible(pumpEnabledAnimationLayer, pumpVisualState.PumpEnabled);
+        }
+
+        private enum Layer
+        {
+            PumpBase,
+            PumpEnabled,
+        }
+    }
+}

Content.Client/GameObjects/Components/Body/BodyManagerComponent.cs

@@ -1,8 +1,10 @@
 #nullable enable
 using Content.Client.GameObjects.Components.Disposal;
+using Content.Client.GameObjects.Components.MedicalScanner;
 using Content.Client.Interfaces.GameObjects.Components.Interaction;
 using Content.Shared.GameObjects.Components.Body;
 using Content.Shared.GameObjects.Components.Damage;
+using Content.Shared.GameObjects.Components.Medical;
 using Robust.Client.Interfaces.GameObjects.Components;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Interfaces.GameObjects;
@@ -14,14 +16,20 @@ namespace Content.Client.GameObjects.Components.Body
 {
     [RegisterComponent]
     [ComponentReference(typeof(IDamageableComponent))]
-    [ComponentReference(typeof(IBodyManagerComponent))]
+    [ComponentReference(typeof(ISharedBodyManagerComponent))]
     public class BodyManagerComponent : SharedBodyManagerComponent, IClientDraggable
     {
         [Dependency] private readonly IEntityManager _entityManager = default!;
 
         public bool ClientCanDropOn(CanDropEventArgs eventArgs)
         {
-            return eventArgs.Target.HasComponent<DisposalUnitComponent>();
+            if (
+                eventArgs.Target.HasComponent<DisposalUnitComponent>()||
+                eventArgs.Target.HasComponent<MedicalScannerComponent>())
+            {
+                return true;
+            }
+            return false;
         }
 
         public bool ClientCanDrag(CanDragEventArgs eventArgs)

Content.Client/GameObjects/Components/CloningPod/CloningPodBoundUserInterface.cs

@@ -0,0 +1,60 @@
+using System;
+using System.Collections.Generic;
+using Content.Shared.GameObjects.Components.Medical;
+using JetBrains.Annotations;
+using Robust.Client.GameObjects.Components.UserInterface;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components.UserInterface;
+using Robust.Shared.IoC;
+using Robust.Shared.Localization;
+using static Content.Shared.GameObjects.Components.Medical.SharedCloningPodComponent;
+
+namespace Content.Client.GameObjects.Components.CloningPod
+{
+    [UsedImplicitly]
+    public class CloningPodBoundUserInterface : BoundUserInterface
+    {
+        public CloningPodBoundUserInterface(ClientUserInterfaceComponent owner, object uiKey) : base(owner, uiKey)
+        {
+        }
+
+        private CloningPodWindow _window;
+
+        protected override void Open()
+        {
+            base.Open();
+
+
+            _window = new CloningPodWindow(new Dictionary<int, string>());
+            _window.OnClose += Close;
+            _window.CloneButton.OnPressed += _ =>
+            {
+                if (_window.SelectedScan != null)
+                {
+                    SendMessage(new CloningPodUiButtonPressedMessage(UiButton.Clone, (int) _window.SelectedScan));
+                }
+            };
+            _window.EjectButton.OnPressed += _ =>
+            {
+                SendMessage(new CloningPodUiButtonPressedMessage(UiButton.Eject, null));
+            };
+            _window.OpenCentered();
+        }
+
+        protected override void UpdateState(BoundUserInterfaceState state)
+        {
+            base.UpdateState(state);
+            _window.Populate((CloningPodBoundUserInterfaceState) state);
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            base.Dispose(disposing);
+
+            if (disposing)
+            {
+                _window?.Dispose();
+            }
+        }
+    }
+}

Content.Client/GameObjects/Components/CloningPod/CloningPodVisualizer.cs

@@ -0,0 +1,41 @@
+using System;
+using Content.Shared.GameObjects.Components.Medical;
+using Robust.Client.GameObjects;
+using Robust.Client.Interfaces.GameObjects.Components;
+using static Content.Shared.GameObjects.Components.Medical.SharedCloningPodComponent;
+using static Content.Shared.GameObjects.Components.Medical.SharedCloningPodComponent.CloningPodStatus;
+
+namespace Content.Client.GameObjects.Components.CloningPod
+{
+    public class CloningPodVisualizer : AppearanceVisualizer
+    {
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+
+            var sprite = component.Owner.GetComponent<ISpriteComponent>();
+            if (!component.TryGetData(CloningPodVisuals.Status, out CloningPodStatus status)) return;
+            sprite.LayerSetState(CloningPodVisualLayers.Machine, StatusToMachineStateId(status));
+        }
+
+        private string StatusToMachineStateId(CloningPodStatus status)
+        {
+            //TODO: implement NoMind for if the mind is not yet in the body
+            //TODO: Find a use for GORE POD
+            switch (status)
+            {
+                case Cloning: return "pod_1";
+                case NoMind: return "pod_e";
+                case Gore: return "pod_g";
+                case Idle: return "pod_0";
+                default:
+                    throw new ArgumentOutOfRangeException(nameof(status), status, "unknown CloningPodStatus");
+            }
+        }
+
+        public enum CloningPodVisualLayers
+        {
+            Machine,
+        }
+    }
+}

Content.Client/GameObjects/Components/CloningPod/CloningPodWindow.cs

@@ -0,0 +1,442 @@
+#nullable enable
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Shared.Localization;
+using Robust.Shared.Maths;
+using Robust.Shared.Timing;
+using Robust.Shared.Utility;
+using Robust.Shared.Localization;
+using static Content.Shared.GameObjects.Components.Medical.SharedCloningPodComponent;
+
+namespace Content.Client.GameObjects.Components.CloningPod
+{
+    public sealed class CloningPodWindow : SS14Window
+    {
+        private Dictionary<int, string> _scanManager;
+
+        private readonly VBoxContainer _mainVBox;
+        private readonly ScanListContainer _scanList;
+        private readonly LineEdit _searchBar;
+        private readonly Button _clearButton;
+        public readonly Button CloneButton;
+        public readonly Button EjectButton;
+        private readonly CloningScanButton _measureButton;
+        private CloningScanButton? _selectedButton;
+        private Label _progressLabel;
+        private readonly ProgressBar _cloningProgressBar;
+        private Label _mindState;
+
+        protected override Vector2 ContentsMinimumSize => _mainVBox?.CombinedMinimumSize ?? Vector2.Zero;
+        private CloningPodBoundUserInterfaceState _lastUpdate = null!;
+
+        // List of scans that are visible based on current filter criteria.
+        private readonly Dictionary<int, string> _filteredScans = new Dictionary<int, string>();
+
+        // The indices of the visible scans last time UpdateVisibleScans was ran.
+        // This is inclusive, so end is the index of the last scan, not right after it.
+        private (int start, int end) _lastScanIndices;
+
+        public int? SelectedScan;
+
+        protected override Vector2? CustomSize => (250, 300);
+
+        public CloningPodWindow(
+            Dictionary<int, string> scanManager)
+        {
+            _scanManager = scanManager;
+
+
+            Title = Loc.GetString("Cloning Machine");
+
+            Contents.AddChild(_mainVBox = new VBoxContainer
+            {
+                Children =
+                {
+                    new HBoxContainer
+                    {
+                        Children =
+                        {
+                            (_searchBar = new LineEdit
+                            {
+                                SizeFlagsHorizontal = SizeFlags.FillExpand,
+                                PlaceHolder = Loc.GetString("Search")
+                            }),
+
+                            (_clearButton = new Button
+                            {
+                                Disabled = true,
+                                Text = Loc.GetString("Clear"),
+                            })
+                        }
+                    },
+                    new ScrollContainer
+                    {
+                        CustomMinimumSize = new Vector2(200.0f, 0.0f),
+                        SizeFlagsVertical = SizeFlags.FillExpand,
+                        Children =
+                        {
+                            (_scanList = new ScanListContainer())
+                        }
+                    },
+                    new VBoxContainer
+                    {
+                        Children =
+                        {
+                            (CloneButton = new Button
+                            {
+                                Text = Loc.GetString("Clone")
+                            })
+                        }
+                    },
+                    (_measureButton = new CloningScanButton {Visible = false}),
+                    (_cloningProgressBar = new ProgressBar
+                    {
+                        CustomMinimumSize = (200, 20),
+                        SizeFlagsHorizontal = SizeFlags.Fill,
+                        MinValue = 0,
+                        MaxValue = 10,
+                        Page = 0,
+                        Value = 0.5f,
+                        Children =
+                        {
+                            (_progressLabel = new Label())
+                        }
+                    }),
+                    (EjectButton = new Button
+                    {
+                        Text = Loc.GetString("Eject Body")
+                    }),
+                    new HBoxContainer
+                    {
+                        Children =
+                        {
+                            new Label()
+                            {
+                                Text = Loc.GetString("Neural Interface: ")
+                            },
+                            (_mindState = new Label()
+                            {
+                                Text = Loc.GetString("No Activity"),
+                                FontColorOverride = Color.Red
+                            }),
+                        }
+                    }
+                }
+            });
+
+
+            _searchBar.OnTextChanged += OnSearchBarTextChanged;
+            _clearButton.OnPressed += OnClearButtonPressed;
+
+            BuildEntityList();
+
+            _searchBar.GrabKeyboardFocus();
+        }
+
+        public void Populate(CloningPodBoundUserInterfaceState state)
+        {
+            //Ignore useless updates or we can't interact with the UI
+            //TODO: come up with a better comparision, probably write a comparator because '.Equals' doesn't work
+            if (_lastUpdate == null || _lastUpdate.MindIdName.Count != state.MindIdName.Count)
+            {
+                _scanManager = state.MindIdName;
+                BuildEntityList();
+                _lastUpdate = state;
+            }
+
+            var percentage = state.Progress / _cloningProgressBar.MaxValue * 100;
+            _progressLabel.Text = $"{percentage:0}%";
+
+            _cloningProgressBar.Value = state.Progress;
+            _mindState.Text = Loc.GetString(state.MindPresent ? "Consciousness Detected" : "No Activity");
+            _mindState.FontColorOverride = state.MindPresent ? Color.Green : Color.Red;
+        }
+
+        private void OnSearchBarTextChanged(LineEdit.LineEditEventArgs args)
+        {
+            BuildEntityList(args.Text);
+            _clearButton.Disabled = string.IsNullOrEmpty(args.Text);
+        }
+
+        private void OnClearButtonPressed(BaseButton.ButtonEventArgs args)
+        {
+            _searchBar.Clear();
+            BuildEntityList("");
+        }
+
+
+        private void BuildEntityList(string? searchStr = null)
+        {
+            _filteredScans.Clear();
+            _scanList.RemoveAllChildren();
+            // Reset last scan indices so it automatically updates the entire list.
+            _lastScanIndices = (0, -1);
+            _scanList.RemoveAllChildren();
+            _selectedButton = null;
+            searchStr = searchStr?.ToLowerInvariant();
+
+            foreach (var scan in _scanManager)
+            {
+                if (searchStr != null && !_doesScanMatchSearch(scan.Value, searchStr))
+                {
+                    continue;
+                }
+
+                _filteredScans.Add(scan.Key, scan.Value);
+            }
+
+            //TODO: set up sort
+            //_filteredScans.Sort((a, b) => string.Compare(a.ToString(), b.ToString(), StringComparison.Ordinal));
+
+            _scanList.TotalItemCount = _filteredScans.Count;
+        }
+
+        private void UpdateVisibleScans()
+        {
+            // Update visible buttons in the scan list.
+
+            // Calculate index of first scan to render based on current scroll.
+            var height = _measureButton.CombinedMinimumSize.Y + ScanListContainer.Separation;
+            var offset = -_scanList.Position.Y;
+            var startIndex = (int) Math.Floor(offset / height);
+            _scanList.ItemOffset = startIndex;
+
+            var (prevStart, prevEnd) = _lastScanIndices;
+
+            // Calculate index of final one.
+            var endIndex = startIndex - 1;
+            var spaceUsed = -height; // -height instead of 0 because else it cuts off the last button.
+
+            while (spaceUsed < _scanList.Parent!.Height)
+            {
+                spaceUsed += height;
+                endIndex += 1;
+            }
+
+            endIndex = Math.Min(endIndex, _filteredScans.Count - 1);
+
+            if (endIndex == prevEnd && startIndex == prevStart)
+            {
+                // Nothing changed so bye.
+                return;
+            }
+
+            _lastScanIndices = (startIndex, endIndex);
+
+            // Delete buttons at the start of the list that are no longer visible (scrolling down).
+            for (var i = prevStart; i < startIndex && i <= prevEnd; i++)
+            {
+                var control = (CloningScanButton) _scanList.GetChild(0);
+                DebugTools.Assert(control.Index == i);
+                _scanList.RemoveChild(control);
+            }
+
+            // Delete buttons at the end of the list that are no longer visible (scrolling up).
+            for (var i = prevEnd; i > endIndex && i >= prevStart; i--)
+            {
+                var control = (CloningScanButton) _scanList.GetChild(_scanList.ChildCount - 1);
+                DebugTools.Assert(control.Index == i);
+                _scanList.RemoveChild(control);
+            }
+
+            var array = _filteredScans.ToArray();
+
+            // Create buttons at the start of the list that are now visible (scrolling up).
+            for (var i = Math.Min(prevStart - 1, endIndex); i >= startIndex; i--)
+            {
+                InsertEntityButton(array[i], true, i);
+            }
+
+            // Create buttons at the end of the list that are now visible (scrolling down).
+            for (var i = Math.Max(prevEnd + 1, startIndex); i <= endIndex; i++)
+            {
+                InsertEntityButton(array[i], false, i);
+            }
+        }
+
+        // Create a spawn button and insert it into the start or end of the list.
+        private void InsertEntityButton(KeyValuePair<int, string> scan, bool insertFirst, int index)
+        {
+            var button = new CloningScanButton
+            {
+                Scan = scan.Value,
+                Id = scan.Key,
+                Index = index // We track this index purely for debugging.
+            };
+            button.ActualButton.OnToggled += OnItemButtonToggled;
+            var entityLabelText = scan.Value;
+
+            button.EntityLabel.Text = entityLabelText;
+
+            if (scan.Key == SelectedScan)
+            {
+                _selectedButton = button;
+                _selectedButton.ActualButton.Pressed = true;
+            }
+
+            //TODO: replace with body's face
+            /*var tex = IconComponent.GetScanIcon(scan, resourceCache);
+            var rect = button.EntityTextureRect;
+            if (tex != null)
+            {
+                rect.Texture = tex.Default;
+            }
+            else
+            {
+                rect.Dispose();
+            }
+
+            rect.Dispose();
+            */
+
+            _scanList.AddChild(button);
+            if (insertFirst)
+            {
+                button.SetPositionInParent(0);
+            }
+        }
+
+        private static bool _doesScanMatchSearch(string scan, string searchStr)
+        {
+            return scan.ToLowerInvariant().Contains(searchStr);
+        }
+
+        private void OnItemButtonToggled(BaseButton.ButtonToggledEventArgs args)
+        {
+            var item = (CloningScanButton) args.Button.Parent!;
+            if (_selectedButton == item)
+            {
+                _selectedButton = null;
+                SelectedScan = null;
+                return;
+            }
+            else if (_selectedButton != null)
+            {
+                _selectedButton.ActualButton.Pressed = false;
+            }
+
+            _selectedButton = null;
+            SelectedScan = null;
+
+            _selectedButton = item;
+            SelectedScan = item.Id;
+        }
+
+        protected override void FrameUpdate(FrameEventArgs args)
+        {
+            base.FrameUpdate(args);
+            UpdateVisibleScans();
+        }
+
+        private class ScanListContainer : Container
+        {
+            // Quick and dirty container to do virtualization of the list.
+            // Basically, get total item count and offset to put the current buttons at.
+            // Get a constant minimum height and move the buttons in the list up to match the scrollbar.
+            private int _totalItemCount;
+            private int _itemOffset;
+
+            public int TotalItemCount
+            {
+                get => _totalItemCount;
+                set
+                {
+                    _totalItemCount = value;
+                    MinimumSizeChanged();
+                }
+            }
+
+            public int ItemOffset
+            {
+                get => _itemOffset;
+                set
+                {
+                    _itemOffset = value;
+                    UpdateLayout();
+                }
+            }
+
+            public const float Separation = 2;
+
+            protected override Vector2 CalculateMinimumSize()
+            {
+                if (ChildCount == 0)
+                {
+                    return Vector2.Zero;
+                }
+
+                var first = GetChild(0);
+
+                var (minX, minY) = first.CombinedMinimumSize;
+
+                return (minX, minY * TotalItemCount + (TotalItemCount - 1) * Separation);
+            }
+
+            protected override void LayoutUpdateOverride()
+            {
+                if (ChildCount == 0)
+                {
+                    return;
+                }
+
+                var first = GetChild(0);
+
+                var height = first.CombinedMinimumSize.Y;
+                var offset = ItemOffset * height + (ItemOffset - 1) * Separation;
+
+                foreach (var child in Children)
+                {
+                    FitChildInBox(child, UIBox2.FromDimensions(0, offset, Width, height));
+                    offset += Separation + height;
+                }
+            }
+        }
+
+        [DebuggerDisplay("cloningbutton {" + nameof(Index) + "}")]
+        private class CloningScanButton : Control
+        {
+            public string Scan { get; set; } = default!;
+            public int Id { get; set; }
+            public Button ActualButton { get; private set; }
+            public Label EntityLabel { get; private set; }
+            public TextureRect EntityTextureRect { get; private set; }
+            public int Index { get; set; }
+
+            public CloningScanButton()
+            {
+                AddChild(ActualButton = new Button
+                {
+                    SizeFlagsHorizontal = SizeFlags.FillExpand,
+                    SizeFlagsVertical = SizeFlags.FillExpand,
+                    ToggleMode = true,
+                });
+
+                AddChild(new HBoxContainer
+                {
+                    Children =
+                    {
+                        (EntityTextureRect = new TextureRect
+                        {
+                            CustomMinimumSize = (32, 32),
+                            SizeFlagsHorizontal = SizeFlags.ShrinkCenter,
+                            SizeFlagsVertical = SizeFlags.ShrinkCenter,
+                            Stretch = TextureRect.StretchMode.KeepAspectCentered,
+                            CanShrink = true
+                        }),
+                        (EntityLabel = new Label
+                        {
+                            SizeFlagsVertical = SizeFlags.ShrinkCenter,
+                            SizeFlagsHorizontal = SizeFlags.FillExpand,
+                            Text = "",
+                            ClipText = true
+                        })
+                    }
+                });
+            }
+        }
+    }
+}

Content.Client/GameObjects/Components/Doors/AirlockVisualizer.cs

@@ -115,6 +115,7 @@ namespace Content.Client.GameObjects.Components.Doors
 
             var unlitVisible = true;
             var boltedVisible = false;
+            var weldedVisible = false;
             switch (state)
             {
                 case DoorVisualState.Closed:
@@ -145,6 +146,9 @@ namespace Content.Client.GameObjects.Components.Doors
                         animPlayer.Play(DenyAnimation, AnimationKey);
                     }
                     break;
+                case DoorVisualState.Welded:
+                    weldedVisible = true;
+                    break;
                 default:
                     throw new ArgumentOutOfRangeException();
             }
@@ -159,6 +163,7 @@ namespace Content.Client.GameObjects.Components.Doors
             }
 
             sprite.LayerSetVisible(DoorVisualLayers.BaseUnlit, unlitVisible);
+            sprite.LayerSetVisible(DoorVisualLayers.BaseWelded, weldedVisible);
             sprite.LayerSetVisible(DoorVisualLayers.BaseBolted, unlitVisible && boltedVisible);
         }
     }
@@ -167,6 +172,7 @@ namespace Content.Client.GameObjects.Components.Doors
     {
         Base,
         BaseUnlit,
-        BaseBolted
+        BaseWelded,
+        BaseBolted,
     }
 }

Content.Client/GameObjects/Components/ExpendableLightVisualizer.cs

@@ -0,0 +1,39 @@
+
+using Content.Shared.GameObjects.Components;
+using JetBrains.Annotations;
+using Robust.Client.GameObjects;
+using System;
+
+namespace Content.Client.GameObjects.Components
+{
+    [UsedImplicitly]
+    public class ExpendableLightVisualizer : AppearanceVisualizer
+    {
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+
+            if (component.Deleted)
+            {
+                return;
+            }
+
+            if (component.TryGetData(ExpendableLightVisuals.State, out string lightBehaviourID))
+            {
+                if (component.Owner.TryGetComponent<LightBehaviourComponent>(out var lightBehaviour))
+                {
+                    lightBehaviour.StopLightBehaviour();
+
+                    if (lightBehaviourID != string.Empty)
+                    {
+                        lightBehaviour.StartLightBehaviour(lightBehaviourID);
+                    }
+                    else if (component.Owner.TryGetComponent<PointLightComponent>(out var light))
+                    {
+                        light.Enabled = false;
+                    }
+                }
+            }
+        }
+    }
+}

Content.Client/GameObjects/Components/ExtinguisherCabinetVisualizer.cs

@@ -0,0 +1,41 @@
+using Content.Shared.GameObjects.Components;
+using Robust.Client.GameObjects;
+using Robust.Client.Interfaces.GameObjects.Components;
+
+namespace Content.Client.GameObjects.Components
+{
+    public class ExtinguisherCabinetVisualizer : AppearanceVisualizer
+    {
+        private string _prefix;
+
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+
+            var sprite = component.Owner.GetComponent<ISpriteComponent>();
+
+            if (component.TryGetData(ExtinguisherCabinetVisuals.IsOpen, out bool isOpen))
+            {
+                if (isOpen)
+                {
+                    if (component.TryGetData(ExtinguisherCabinetVisuals.ContainsExtinguisher, out bool contains))
+                    {
+                        if (contains)
+                        {
+                            sprite.LayerSetState(0, "extinguisher_full");
+                        }
+                        else
+                        {
+                            sprite.LayerSetState(0, "extinguisher_empty");
+                        }
+
+                    }
+                }
+                else
+                {
+                    sprite.LayerSetState(0, "extinguisher_closed");
+                }
+            }
+        }
+    }
+}

Content.Client/GameObjects/Components/Interactable/ExpendableLightComponent.cs

@@ -0,0 +1,16 @@
+
+using Content.Shared.GameObjects.Components;
+using Robust.Shared.GameObjects;
+using Robust.Client.GameObjects;
+
+namespace Content.Client.GameObjects.Components.Interactable
+{
+    /// <summary>
+    ///     Component that represents a handheld expendable light which can be activated and eventually dies over time.
+    /// </summary>
+    [RegisterComponent]
+    public class ExpendableLightComponent : SharedExpendableLightComponent
+    {
+       
+    }
+}

Content.Client/GameObjects/Components/LightBehaviourComponent.cs

@@ -0,0 +1,539 @@
+
+using System;
+using System.Collections.Generic;
+using Robust.Client.GameObjects;
+using Robust.Shared.Animations;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.Random;
+using Robust.Shared.IoC;
+using Robust.Shared.Serialization;
+using Robust.Shared.ViewVariables;
+using Content.Shared.GameObjects.Components;
+using Robust.Shared.Log;
+using Robust.Shared.Maths;
+using Robust.Shared.Interfaces.Serialization;
+using Robust.Client.Animations;
+using Robust.Shared.Interfaces.GameObjects;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Robust.Client.GameObjects.Components.Animations;
+using System.Linq;
+
+namespace Content.Client.GameObjects.Components
+{
+    #region LIGHT_BEHAVIOURS
+    /// <summary>
+    /// Base class for all light behaviours to derive from.
+    /// This AnimationTrack derivative does not rely on keyframes since it often needs to have a randomized duration.
+    /// </summary>
+    [Serializable]
+    public abstract class LightBehaviourAnimationTrack : AnimationTrackProperty, IExposeData
+    {
+        [ViewVariables] public string ID { get; set; }
+        [ViewVariables] public string Property { get; protected set; }
+        [ViewVariables] public bool IsLooped { get; set; }
+        [ViewVariables] public bool Enabled { get; set; }
+        [ViewVariables] public float StartValue { get; set; }
+        [ViewVariables] public float EndValue { get; set; }
+        [ViewVariables] public float MinDuration { get; set; }
+        [ViewVariables] public float MaxDuration { get; set; }
+        [ViewVariables] public AnimationInterpolationMode InterpolateMode { get; set; }
+
+        [ViewVariables] protected float MaxTime { get; set; }
+        protected PointLightComponent Light = default;
+        protected IRobustRandom RobustRandom = default;
+
+        private float _maxTime = default;
+        
+        public virtual void ExposeData(ObjectSerializer serializer)
+        {
+            serializer.DataField(this, x => x.ID, "id", string.Empty);
+            serializer.DataField(this, x => x.IsLooped, "isLooped", false);
+            serializer.DataField(this, x => x.Enabled, "enabled", false);
+            serializer.DataField(this, x => x.StartValue, "startValue", 0f);
+            serializer.DataField(this, x => x.EndValue, "endValue", 2f);
+            serializer.DataField(this, x => x.MinDuration, "minDuration", -1f);
+            serializer.DataField(this, x => x.MaxDuration, "maxDuration", 2f);
+            serializer.DataField(this, x => x.Property, "property", "Radius");
+            serializer.DataField(this, x => x.InterpolateMode, "interpolate", AnimationInterpolationMode.Linear);
+        }
+
+        public void Initialize(PointLightComponent light)
+        {
+            Light = light;
+            RobustRandom = IoCManager.Resolve<IRobustRandom>();
+
+            if (Enabled)
+            {
+                Light.Enabled = true;
+            }
+
+            OnInitialize();
+        }
+
+        public void UpdatePlaybackValues(Animation owner)
+        {
+            Light.Enabled = true;
+
+            if (MinDuration > 0)
+            {
+                MaxTime = (float) RobustRandom.NextDouble() * (MaxDuration - MinDuration) + MinDuration;
+            }
+            else
+            {
+                MaxTime = MaxDuration;
+            }
+
+            owner.Length = TimeSpan.FromSeconds(MaxTime); 
+        }
+
+        public override (int KeyFrameIndex, float FramePlayingTime) InitPlayback()
+        {
+            OnStart();
+
+            return (-1, _maxTime);
+        }
+
+        protected void ApplyProperty(object value)
+        {
+            if (Property == null)
+            {
+                throw new InvalidOperationException("Property parameter is null! Check the prototype!");
+            }
+
+            if (Light is IAnimationProperties properties)
+            {
+                properties.SetAnimatableProperty(Property, value);
+            }
+            else
+            {
+                AnimationHelper.SetAnimatableProperty(Light, Property, value);
+            }
+        }
+
+        protected override void ApplyProperty(object context, object value)
+        {
+            ApplyProperty(value);
+        }
+
+        public virtual void OnInitialize() { }
+        public virtual void OnStart() { }
+    }
+
+    /// <summary>
+    /// A light behaviour that alternates between StartValue and EndValue
+    /// </summary>
+    public class PulseBehaviour: LightBehaviourAnimationTrack
+    {
+        public override (int KeyFrameIndex, float FramePlayingTime) AdvancePlayback(
+            object context, int prevKeyFrameIndex, float prevPlayingTime, float frameTime)
+        {
+            var playingTime = prevPlayingTime + frameTime;
+            var interpolateValue = playingTime / MaxTime;
+
+            if (Property == "Enabled") // special case for boolean
+            {
+                ApplyProperty(interpolateValue < 0.5f? true : false);
+                return (-1, playingTime);
+            }
+
+            if (interpolateValue < 0.5f)
+            {
+                switch (InterpolateMode)
+                {
+                    case AnimationInterpolationMode.Linear:
+                        ApplyProperty(InterpolateLinear(StartValue, EndValue, interpolateValue * 2f));
+                        break;
+                    case AnimationInterpolationMode.Cubic:
+                        ApplyProperty(InterpolateCubic(EndValue, StartValue, EndValue, StartValue, interpolateValue * 2f));
+                        break;
+                    default:
+                    case AnimationInterpolationMode.Nearest:
+                        ApplyProperty(StartValue);
+                        break;
+                }
+            }
+            else
+            {
+                switch (InterpolateMode)
+                {
+                    case AnimationInterpolationMode.Linear:
+                        ApplyProperty(InterpolateLinear(EndValue, StartValue, (interpolateValue - 0.5f) * 2f));
+                        break;
+                    case AnimationInterpolationMode.Cubic:
+                        ApplyProperty(InterpolateCubic(StartValue, EndValue, StartValue, EndValue, (interpolateValue - 0.5f) * 2f));
+                        break;
+                    default:
+                    case AnimationInterpolationMode.Nearest:
+                        ApplyProperty(EndValue);
+                        break;
+                }
+            }
+
+            return (-1, playingTime);
+        }
+    }
+
+    /// <summary>
+    /// A light behaviour that interpolates from StartValue to EndValue
+    /// </summary>
+    public class FadeBehaviour : LightBehaviourAnimationTrack
+    {
+        public override (int KeyFrameIndex, float FramePlayingTime) AdvancePlayback(
+            object context, int prevKeyFrameIndex, float prevPlayingTime, float frameTime)
+        {
+            var playingTime = prevPlayingTime + frameTime;
+            var interpolateValue = playingTime / MaxTime;
+
+            if (Property == "Enabled") // special case for boolean
+            {
+                ApplyProperty(interpolateValue < EndValue? true : false);
+                return (-1, playingTime);
+            }
+
+            switch (InterpolateMode)
+            {
+                case AnimationInterpolationMode.Linear:
+                    ApplyProperty(InterpolateLinear(StartValue, EndValue, interpolateValue));
+                    break;
+                case AnimationInterpolationMode.Cubic:
+                    ApplyProperty(InterpolateCubic(EndValue, StartValue, EndValue, StartValue, interpolateValue));
+                    break;
+                default:
+                case AnimationInterpolationMode.Nearest:
+                    ApplyProperty(interpolateValue < 0.5f ? StartValue : EndValue);
+                    break;
+            }
+
+            return (-1, playingTime);
+        }
+    }
+
+    /// <summary>
+    /// A light behaviour that interpolates using random values chosen between StartValue and EndValue.
+    /// </summary>
+    public class RandomizeBehaviour : LightBehaviourAnimationTrack
+    {
+        private object _randomValue1 = default;
+        private object _randomValue2 = default;
+        private object _randomValue3 = default;
+        private object _randomValue4 = default;
+
+        public override void OnInitialize()
+        {
+            _randomValue2 = InterpolateLinear(StartValue, EndValue, (float) RobustRandom.NextDouble());
+            _randomValue3 = InterpolateLinear(StartValue, EndValue, (float) RobustRandom.NextDouble());
+            _randomValue4 = InterpolateLinear(StartValue, EndValue, (float) RobustRandom.NextDouble());
+        }
+
+        public override void OnStart()
+        {
+            if (Property == "Enabled") // special case for boolean, we randomize it
+            {
+                ApplyProperty(RobustRandom.NextDouble() < 0.5 ? true : false);
+                return;
+            }
+
+            if (InterpolateMode == AnimationInterpolationMode.Cubic)
+            {
+                _randomValue1 = _randomValue2;
+                _randomValue2 = _randomValue3;
+            }
+
+            _randomValue3 = _randomValue4;
+            _randomValue4 = InterpolateLinear(StartValue, EndValue, (float) RobustRandom.NextDouble());
+        }
+
+        public override (int KeyFrameIndex, float FramePlayingTime) AdvancePlayback(
+           object context, int prevKeyFrameIndex, float prevPlayingTime, float frameTime)
+        {
+            var playingTime = prevPlayingTime + frameTime;
+            var interpolateValue = playingTime / MaxTime;
+
+            if (Property == "Enabled")
+            {
+                return (-1, playingTime);
+            }
+
+            switch (InterpolateMode)
+            {
+                case AnimationInterpolationMode.Linear:
+                    ApplyProperty(InterpolateLinear(_randomValue3, _randomValue4, interpolateValue));
+                    break;
+                case AnimationInterpolationMode.Cubic:
+                    ApplyProperty(InterpolateCubic(_randomValue1, _randomValue2, _randomValue3, _randomValue4, interpolateValue));
+                    break;
+                default:
+                case AnimationInterpolationMode.Nearest:
+                    ApplyProperty(interpolateValue < 0.5f ? _randomValue3 : _randomValue4);
+                    break;
+            }
+
+            return (-1, playingTime);
+        }
+    }
+
+    /// <summary>
+    /// A light behaviour that cycles through a list of colors.
+    /// </summary>
+    public class ColorCycleBehaviour : LightBehaviourAnimationTrack
+    {
+        public List<Color> ColorsToCycle { get; set; }
+
+        private int _colorIndex = 0;
+
+        public override void OnStart()
+        {
+            _colorIndex++;
+
+            if (_colorIndex > ColorsToCycle.Count - 1)
+            {
+                _colorIndex = 0;
+            }
+        }
+
+        public override (int KeyFrameIndex, float FramePlayingTime) AdvancePlayback(
+           object context, int prevKeyFrameIndex, float prevPlayingTime, float frameTime)
+        {
+            var playingTime = prevPlayingTime + frameTime;
+            var interpolateValue = playingTime / MaxTime;
+
+            switch (InterpolateMode)
+            {
+                case AnimationInterpolationMode.Linear:
+                    ApplyProperty(InterpolateLinear(ColorsToCycle[(_colorIndex - 1) % ColorsToCycle.Count],
+                                                                    ColorsToCycle[_colorIndex],
+                                                                    interpolateValue));
+                    break;
+                case AnimationInterpolationMode.Cubic:
+                    ApplyProperty(InterpolateCubic(ColorsToCycle[_colorIndex],
+                                                                    ColorsToCycle[(_colorIndex + 1) % ColorsToCycle.Count],
+                                                                    ColorsToCycle[(_colorIndex + 2) % ColorsToCycle.Count],
+                                                                    ColorsToCycle[(_colorIndex + 3) % ColorsToCycle.Count],
+                                                                    interpolateValue));
+                    break;
+                default:
+                case AnimationInterpolationMode.Nearest:
+                    ApplyProperty(ColorsToCycle[_colorIndex]);
+                    break;
+            }
+
+            return (-1, playingTime);
+        }
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            serializer.DataField(this, x => x.ID, "id", string.Empty);
+            serializer.DataField(this, x => x.IsLooped, "isLooped", false);
+            serializer.DataField(this, x => x.Enabled, "enabled", false);
+            serializer.DataField(this, x => x.MinDuration, "minDuration", -1f);
+            serializer.DataField(this, x => x.MaxDuration, "maxDuration", 2f);
+            serializer.DataField(this, x => x.InterpolateMode, "interpolate", AnimationInterpolationMode.Linear);
+            ColorsToCycle = serializer.ReadDataField("colors", new List<Color>());
+            Property = "Color";
+
+            if (ColorsToCycle.Count < 2)
+            {
+                throw new InvalidOperationException($"{nameof(ColorCycleBehaviour)} has less than 2 colors to cycle");
+            }
+        }
+
+    }
+    #endregion
+
+    /// <summary>
+    /// A component which applies a specific behaviour to a PointLightComponent on its owner.
+    /// </summary>
+    [RegisterComponent]
+    public class LightBehaviourComponent : SharedLightBehaviourComponent 
+    {
+        private const string KeyPrefix = nameof(LightBehaviourComponent);
+
+        private class AnimationContainer
+        {
+            public AnimationContainer(int key, Animation animation, LightBehaviourAnimationTrack track)
+            {
+                Key = key;
+                Animation = animation;
+                LightBehaviour = track;
+            }
+
+            public string FullKey => KeyPrefix + Key;
+            public int Key { get; set; }
+            public Animation Animation { get; set; }
+            public LightBehaviourAnimationTrack LightBehaviour { get; set; }
+        }
+
+        [ViewVariables(VVAccess.ReadOnly)]
+        private List<AnimationContainer> _animations = new List<AnimationContainer>();
+
+        private float _originalRadius = default;
+        private float _originalEnergy = default;
+        private Angle _originalRotation = default;
+        private Color _originalColor = default;
+        private bool _originalEnabled = default;
+        private PointLightComponent _lightComponent = default;
+        private AnimationPlayerComponent _animationPlayer = default;
+
+        protected override void Startup()
+        {
+            base.Startup();
+
+            CopyLightSettings();
+            _animationPlayer = Owner.EnsureComponent<AnimationPlayerComponent>();
+            _animationPlayer.AnimationCompleted += s => OnAnimationCompleted(s);
+
+            foreach (var container in _animations)
+            {
+                container.LightBehaviour.Initialize(_lightComponent);
+            }
+
+            // we need to initialize all behaviours before starting any 
+            foreach (var container in _animations)
+            {
+                if (container.LightBehaviour.Enabled)
+                {
+                    StartLightBehaviour(container.LightBehaviour.ID);
+                }
+            }
+        }
+
+        private void OnAnimationCompleted(string key)
+        {
+            var container = _animations.FirstOrDefault(x => x.FullKey == key);
+
+            if (container.LightBehaviour.IsLooped)
+            {
+                container.LightBehaviour.UpdatePlaybackValues(container.Animation);
+                _animationPlayer.Play(container.Animation, container.FullKey);
+            }
+        }
+
+        /// <summary>
+        /// If we disable all the light behaviours we want to be able to revert the light to its original state.
+        /// </summary>
+        private void CopyLightSettings()
+        {
+            if (Owner.TryGetComponent(out _lightComponent))
+            {
+                _originalColor = _lightComponent.Color;
+                _originalEnabled = _lightComponent.Enabled;
+                _originalEnergy = _lightComponent.Energy;
+                _originalRadius = _lightComponent.Radius;
+                _originalRotation = _lightComponent.Rotation;
+            }
+            else
+            {
+                Logger.Warning($"{Owner.Name} has a {nameof(LightBehaviourComponent)} but it has no {nameof(PointLightComponent)}! Check the prototype!");
+            }
+        }
+
+        /// <summary>
+        /// Start animating a light behaviour with the specified ID. If the specified ID is empty, it will start animating all light behaviour entries.
+        /// If specified light behaviours are already animating, calling this does nothing.
+        /// Multiple light behaviours can have the same ID.
+        /// </summary>
+        public void StartLightBehaviour(string id = "")
+        {
+            foreach (var container in _animations)
+            {
+                if (container.LightBehaviour.ID == id || id == string.Empty)
+                {
+                    if (!_animationPlayer.HasRunningAnimation(KeyPrefix + container.Key))
+                    {
+                        container.LightBehaviour.UpdatePlaybackValues(container.Animation);
+                        _animationPlayer.Play(container.Animation, KeyPrefix + container.Key);
+                    }
+                }
+            }
+        }
+
+        /// <summary>
+        /// If any light behaviour with the specified ID is animating, then stop it.
+        /// If no ID is specified then all light behaviours will be stopped.
+        /// Multiple light behaviours can have the same ID.
+        /// </summary>
+        /// <param name="id"></param>
+        /// <param name="removeBehaviour">Should the behaviour(s) also be removed permanently?</param>
+        /// <param name="resetToOriginalSettings">Should the light have its original settings applied?</param>
+        public void StopLightBehaviour(string id = "", bool removeBehaviour = false, bool resetToOriginalSettings = false)
+        {
+            var toRemove = new List<AnimationContainer>();
+
+            foreach (var container in _animations)
+            {
+                if (container.LightBehaviour.ID == id || id == string.Empty)
+                {
+                    if (_animationPlayer.HasRunningAnimation(KeyPrefix + container.Key))
+                    {
+                        _animationPlayer.Stop(KeyPrefix + container.Key);
+                    }
+
+                    if (removeBehaviour)
+                    {
+                        toRemove.Add(container);
+                    }
+                }
+            }
+
+            foreach (var container in toRemove)
+            {
+                _animations.Remove(container);
+            }
+
+            if (resetToOriginalSettings)
+            {
+                _lightComponent.Color = _originalColor;
+                _lightComponent.Enabled = _originalEnabled;
+                _lightComponent.Energy = _originalEnergy;
+                _lightComponent.Radius = _originalRadius;
+                _lightComponent.Rotation = _originalRotation;
+            }
+        }
+
+        /// <summary>
+        /// Add a new light behaviour to the component and start it immediately unless otherwise specified.
+        /// </summary>
+        public void AddNewLightBehaviour(LightBehaviourAnimationTrack behaviour, bool playImmediately = true)
+        {
+            int key = 0;
+
+            while (_animations.Any(x => x.Key == key))
+            {
+                key++;
+            }
+
+            var animation = new Animation()
+            {
+                AnimationTracks = { behaviour }
+            };
+
+            behaviour.Initialize(_lightComponent);
+            var container = new AnimationContainer(key, animation, behaviour);
+            _animations.Add(container);
+
+            if (playImmediately)
+            {
+                StartLightBehaviour(behaviour.ID);
+            }
+        }
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            var behaviours = serializer.ReadDataField("behaviours", new List<LightBehaviourAnimationTrack>());
+            var key = 0;
+
+            foreach (LightBehaviourAnimationTrack behaviour in behaviours)
+            {
+                var animation = new Animation()
+                {
+                    AnimationTracks = { behaviour }
+                };
+
+                _animations.Add(new AnimationContainer(key, animation, behaviour));
+                key++;
+            }
+        }
+    }
+}

Content.Client/GameObjects/Components/MedicalScanner/MedicalScannerComponent.cs

@@ -0,0 +1,13 @@
+using Content.Shared.GameObjects.Components.Medical;
+using Robust.Shared.GameObjects;
+
+namespace Content.Client.GameObjects.Components.MedicalScanner
+{
+
+    [RegisterComponent]
+    [ComponentReference(typeof(SharedMedicalScannerComponent))]
+    public class MedicalScannerComponent : SharedMedicalScannerComponent
+    {
+
+    }
+}

Content.Client/GameObjects/Components/MedicalScanner/MedicalScannerVisualizer.cs

@@ -12,6 +12,11 @@ namespace Content.Client.GameObjects.Components.MedicalScanner
         {
             base.OnChangeData(component);
 
+            if (component.Owner.Deleted)
+            {
+                return;
+            }
+
             var sprite = component.Owner.GetComponent<ISpriteComponent>();
             if (!component.TryGetData(MedicalScannerVisuals.Status, out MedicalScannerStatus status)) return;
             sprite.LayerSetState(MedicalScannerVisualLayers.Machine, StatusToMachineStateId(status));

Content.Client/GameObjects/Components/MedicalScanner/MedicalScannerWindow.cs

@@ -24,7 +24,7 @@ namespace Content.Client.GameObjects.Components.MedicalScanner
                 {
                     (ScanButton = new Button
                     {
-                        Text = "Scan and Save DNA"
+                        Text = Loc.GetString("Scan and Save DNA")
                     }),
                     (_diagnostics = new Label
                     {

Content.Client/GameObjects/Components/Mobs/ClientStatusEffectsComponent.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using Content.Client.UserInterface;
@@ -100,7 +100,10 @@ namespace Content.Client.GameObjects.Components.Mobs
             foreach (var (key, effect) in _status.OrderBy(x => (int) x.Key))
             {
                 var texture = _resourceCache.GetTexture(effect.Icon);
-                var status = new StatusControl(key, texture);
+                var status = new StatusControl(key, texture)
+                {
+                    ToolTip = key.ToString()
+                };
 
                 if (effect.Cooldown.HasValue)
                 {

Content.Client/GameObjects/Components/Mobs/State/CriticalState.cs

@@ -0,0 +1,30 @@
+using Content.Client.GameObjects.EntitySystems;
+using Content.Shared.GameObjects.Components.Damage;
+using Content.Shared.GameObjects.Components.Mobs;
+using Content.Shared.GameObjects.Components.Mobs.State;
+using Robust.Client.GameObjects;
+using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.Interfaces.GameObjects;
+
+namespace Content.Client.GameObjects.Components.Mobs.State
+{
+    public class CriticalState : SharedCriticalState
+    {
+        public override void EnterState(IEntity entity)
+        {
+            if (entity.TryGetComponent(out AppearanceComponent appearance))
+            {
+                appearance.SetData(DamageStateVisuals.State, DamageState.Critical);
+            }
+
+            EntitySystem.Get<StandingStateSystem>().Down(entity);
+        }
+
+        public override void ExitState(IEntity entity)
+        {
+            EntitySystem.Get<StandingStateSystem>().Standing(entity);
+        }
+
+        public override void UpdateState(IEntity entity) { }
+    }
+}

Content.Client/GameObjects/Components/Mobs/State/DeadState.cs

@@ -0,0 +1,41 @@
+using Content.Client.GameObjects.EntitySystems;
+using Content.Shared.GameObjects.Components.Damage;
+using Content.Shared.GameObjects.Components.Mobs;
+using Content.Shared.GameObjects.Components.Mobs.State;
+using Robust.Client.GameObjects;
+using Robust.Shared.GameObjects.Components;
+using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.Interfaces.GameObjects;
+
+namespace Content.Client.GameObjects.Components.Mobs.State
+{
+    public class DeadState : SharedDeadState
+    {
+        public override void EnterState(IEntity entity)
+        {
+            if (entity.TryGetComponent(out AppearanceComponent appearance))
+            {
+                appearance.SetData(DamageStateVisuals.State, DamageState.Dead);
+            }
+
+            EntitySystem.Get<StandingStateSystem>().Down(entity);
+
+            if (entity.TryGetComponent(out CollidableComponent collidable))
+            {
+                collidable.CanCollide = false;
+            }
+        }
+
+        public override void ExitState(IEntity entity)
+        {
+            EntitySystem.Get<StandingStateSystem>().Standing(entity);
+
+            if (entity.TryGetComponent(out CollidableComponent collidable))
+            {
+                collidable.CanCollide = true;
+            }
+        }
+
+        public override void UpdateState(IEntity entity) { }
+    }
+}

Content.Client/GameObjects/Components/Mobs/State/MobStateManagerComponent.cs

@@ -0,0 +1,62 @@
+#nullable enable
+using System.Collections.Generic;
+using Content.Shared.GameObjects.Components.Damage;
+using Content.Shared.GameObjects.Components.Mobs.State;
+using Robust.Shared.GameObjects;
+
+namespace Content.Client.GameObjects.Components.Mobs.State
+{
+    [RegisterComponent]
+    [ComponentReference(typeof(SharedMobStateManagerComponent))]
+    public class MobStateManagerComponent : SharedMobStateManagerComponent
+    {
+        private readonly Dictionary<DamageState, IMobState> _behavior = new Dictionary<DamageState, IMobState>
+        {
+            {DamageState.Alive, new NormalState()},
+            {DamageState.Critical, new CriticalState()},
+            {DamageState.Dead, new DeadState()}
+        };
+
+        private DamageState _currentDamageState;
+
+        protected override IReadOnlyDictionary<DamageState, IMobState> Behavior => _behavior;
+
+        public override DamageState CurrentDamageState
+        {
+            get => _currentDamageState;
+            protected set
+            {
+                if (_currentDamageState == value)
+                {
+                    return;
+                }
+
+                if (_currentDamageState != DamageState.Invalid)
+                {
+                    CurrentMobState.ExitState(Owner);
+                }
+
+                _currentDamageState = value;
+                CurrentMobState = Behavior[CurrentDamageState];
+                CurrentMobState.EnterState(Owner);
+
+                Dirty();
+            }
+        }
+
+        public override void HandleComponentState(ComponentState? curState, ComponentState? nextState)
+        {
+            base.HandleComponentState(curState, nextState);
+
+            if (!(curState is MobStateManagerComponentState state))
+            {
+                return;
+            }
+
+            _currentDamageState = state.DamageState;
+            CurrentMobState?.ExitState(Owner);
+            CurrentMobState = Behavior[CurrentDamageState];
+            CurrentMobState.EnterState(Owner);
+        }
+    }
+}

Content.Client/GameObjects/Components/Mobs/State/NormalState.cs

@@ -0,0 +1,25 @@
+using Content.Shared.GameObjects.Components.Damage;
+using Content.Shared.GameObjects.Components.Mobs;
+using Content.Shared.GameObjects.Components.Mobs.State;
+using Robust.Client.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+
+namespace Content.Client.GameObjects.Components.Mobs.State
+{
+    public class NormalState : SharedNormalState
+    {
+        public override void EnterState(IEntity entity)
+        {
+            if (entity.TryGetComponent(out AppearanceComponent appearance))
+            {
+                appearance.SetData(DamageStateVisuals.State, DamageState.Alive);
+            }
+
+            UpdateState(entity);
+        }
+
+        public override void ExitState(IEntity entity) { }
+
+        public override void UpdateState(IEntity entity) { }
+    }
+}

Content.Client/GameObjects/Components/Observer/GhostComponent.cs

@@ -18,8 +18,7 @@ namespace Content.Client.GameObjects.Components.Observer
 
         private GhostGui _gui;
 
-        [ViewVariables(VVAccess.ReadOnly)]
-        public bool CanReturnToBody { get; private set; } = true;
+        [ViewVariables(VVAccess.ReadOnly)] public bool CanReturnToBody { get; private set; } = true;
 
         private bool _isAttached;
 
@@ -51,7 +50,8 @@ namespace Content.Client.GameObjects.Components.Observer
             base.Initialize();
 
             if (Owner.TryGetComponent(out SpriteComponent component))
-                component.Visible = _playerManager.LocalPlayer.ControlledEntity?.HasComponent<GhostComponent>() ?? false;
+                component.Visible =
+                    _playerManager.LocalPlayer.ControlledEntity?.HasComponent<GhostComponent>() ?? false;
         }
 
         public override void HandleMessage(ComponentMessage message, IComponent component)
@@ -98,7 +98,6 @@ namespace Content.Client.GameObjects.Components.Observer
             {
                 _gui?.Update();
             }
-
         }
     }
 }

Content.Client/GameObjects/Components/Power/AME/AMEControllerBoundUserInterface.cs

@@ -0,0 +1,62 @@
+using Robust.Client.GameObjects.Components.UserInterface;
+using Robust.Shared.GameObjects.Components.UserInterface;
+using static Content.Shared.GameObjects.Components.Power.AME.SharedAMEControllerComponent;
+
+namespace Content.Client.GameObjects.Components.Power.AME
+{
+    public class AMEControllerBoundUserInterface : BoundUserInterface
+    {
+        private AMEWindow _window;
+
+        public AMEControllerBoundUserInterface(ClientUserInterfaceComponent owner, object uiKey) : base(owner, uiKey)
+        {
+
+        }
+
+        protected override void Open()
+        {
+            base.Open();
+
+            _window = new AMEWindow();
+            _window.OnClose += Close;
+            _window.OpenCentered();
+
+            _window.EjectButton.OnPressed += _ => ButtonPressed(UiButton.Eject);
+            _window.ToggleInjection.OnPressed += _ => ButtonPressed(UiButton.ToggleInjection);
+            _window.IncreaseFuelButton.OnPressed += _ => ButtonPressed(UiButton.IncreaseFuel);
+            _window.DecreaseFuelButton.OnPressed += _ => ButtonPressed(UiButton.DecreaseFuel);
+            _window.RefreshPartsButton.OnPressed += _ => ButtonPressed(UiButton.RefreshParts);
+        }
+
+
+        /// <summary>
+        /// Update the ui each time new state data is sent from the server.
+        /// </summary>
+        /// <param name="state">
+        /// Data of the <see cref="SharedReagentDispenserComponent"/> that this ui represents.
+        /// Sent from the server.
+        /// </param>
+        protected override void UpdateState(BoundUserInterfaceState state)
+        {
+            base.UpdateState(state);
+
+            var castState = (AMEControllerBoundUserInterfaceState) state;
+            _window?.UpdateState(castState); //Update window state
+        }
+
+        private void ButtonPressed(UiButton button, int dispenseIndex = -1)
+        {
+            SendMessage(new UiButtonPressedMessage(button));
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            base.Dispose(disposing);
+
+            if (disposing)
+            {
+                _window.Dispose();
+            }
+        }
+    }
+}

Content.Client/GameObjects/Components/Power/AME/AMEControllerVisualizer.cs

@@ -0,0 +1,57 @@
+using Robust.Client.GameObjects;
+using Robust.Client.Interfaces.GameObjects.Components;
+using Robust.Shared.Interfaces.GameObjects;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using static Content.Shared.GameObjects.Components.Power.AME.SharedAMEControllerComponent;
+
+namespace Content.Client.GameObjects.Components.Power.AME
+{
+    public class AMEControllerVisualizer : AppearanceVisualizer
+    {
+        public override void InitializeEntity(IEntity entity)
+        {
+            base.InitializeEntity(entity);
+            var sprite = entity.GetComponent<ISpriteComponent>();
+
+            sprite.LayerMapSet(Layers.Display, sprite.AddLayerState("control_on"));
+            sprite.LayerSetVisible(Layers.Display, false);
+        }
+
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+            var sprite = component.Owner.GetComponent<ISpriteComponent>();
+            if (component.TryGetData<string>(AMEControllerVisuals.DisplayState, out var state))
+            {
+                switch (state)
+                {
+                    case "on":
+                        sprite.LayerSetState(Layers.Display, "control_on");
+                        sprite.LayerSetVisible(Layers.Display, true);
+                        break;
+                    case "critical":
+                        sprite.LayerSetState(Layers.Display, "control_critical");
+                        sprite.LayerSetVisible(Layers.Display, true);
+                        break;
+                    case "fuck":
+                        sprite.LayerSetState(Layers.Display, "control_fuck");
+                        sprite.LayerSetVisible(Layers.Display, true);
+                        break;
+                    case "off":
+                        sprite.LayerSetVisible(Layers.Display, false);
+                        break;
+                    default:
+                        sprite.LayerSetVisible(Layers.Display, false);
+                        break;
+                }
+            }
+        }
+
+        enum Layers
+        {
+            Display,
+        }
+    }
+}

Content.Client/GameObjects/Components/Power/AME/AMEVisualizer.cs

@@ -0,0 +1,63 @@
+using Robust.Client.GameObjects;
+using Robust.Client.Interfaces.GameObjects.Components;
+using Robust.Shared.Interfaces.GameObjects;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using static Content.Shared.GameObjects.Components.Power.AME.SharedAMEShieldComponent;
+
+namespace Content.Client.GameObjects.Components.Power.AME
+{
+    public class AMEVisualizer : AppearanceVisualizer
+    {
+        public override void InitializeEntity(IEntity entity)
+        {
+            base.InitializeEntity(entity);
+            var sprite = entity.GetComponent<ISpriteComponent>();
+            sprite.LayerMapSet(Layers.Core, sprite.AddLayerState("core"));
+            sprite.LayerSetVisible(Layers.Core, false);
+            sprite.LayerMapSet(Layers.CoreState, sprite.AddLayerState("core_weak"));
+            sprite.LayerSetVisible(Layers.CoreState, false);
+        }
+
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+            var sprite = component.Owner.GetComponent<ISpriteComponent>();
+            if (component.TryGetData<string>(AMEShieldVisuals.Core, out var core))
+            {
+                if (core == "isCore")
+                {
+                    sprite.LayerSetState(Layers.Core, "core");
+                    sprite.LayerSetVisible(Layers.Core, true);
+                }
+                else
+                {
+                    sprite.LayerSetVisible(Layers.Core, false);
+                }
+            }
+
+            if (component.TryGetData<string>(AMEShieldVisuals.CoreState, out var coreState))
+                switch (coreState)
+                {
+                    case "weak":
+                        sprite.LayerSetState(Layers.CoreState, "core_weak");
+                        sprite.LayerSetVisible(Layers.CoreState, true);
+                        break;
+                    case "strong":
+                        sprite.LayerSetState(Layers.CoreState, "core_strong");
+                        sprite.LayerSetVisible(Layers.CoreState, true);
+                        break;
+                    case "off":
+                        sprite.LayerSetVisible(Layers.CoreState, false);
+                        break;
+                }
+        }
+    }
+
+    enum Layers
+    {
+        Core,
+        CoreState,
+    }
+}

Content.Client/GameObjects/Components/Power/AME/AMEWindow.cs

@@ -0,0 +1,162 @@
+using Content.Client.UserInterface.Stylesheets;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Shared.GameObjects.Components.UserInterface;
+using Robust.Shared.IoC;
+using Robust.Shared.Localization;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using static Content.Shared.GameObjects.Components.Power.AME.SharedAMEControllerComponent;
+
+namespace Content.Client.GameObjects.Components.Power.AME
+{
+    public class AMEWindow : SS14Window
+    {
+        public Label InjectionStatus { get; set; }
+        public Button EjectButton { get; set; }
+        public Button ToggleInjection { get; set; }
+        public Button IncreaseFuelButton { get; set; }
+        public Button DecreaseFuelButton { get; set; }
+        public Button RefreshPartsButton { get; set; }
+        public ProgressBar FuelMeter { get; set; }
+        public Label FuelAmount { get; set; }
+        public Label InjectionAmount { get; set; }
+        public Label CoreCount { get; set; }
+
+
+        public AMEWindow()
+        {
+            IoCManager.InjectDependencies(this);
+
+            Title = "Antimatter Control Unit";
+            Contents.AddChild(new VBoxContainer
+            {
+                Children =
+                    {
+                        new HBoxContainer
+                        {
+                            Children =
+                            {
+                                new Label {Text = Loc.GetString("Engine Status") + ": "},
+                                (InjectionStatus = new Label {Text = "Not Injecting"})
+                            }
+                        },
+                        new HBoxContainer
+                        {
+                            Children =
+                            {
+                                (ToggleInjection = new Button {Text = "Toggle Injection", StyleClasses = {StyleBase.ButtonOpenBoth}, Disabled = true}),
+                            }
+                        },
+                        new HBoxContainer
+                        {
+                            Children =
+                            {
+                                new Label {Text = Loc.GetString("Fuel Status") + ": "},
+                                (FuelAmount = new Label {Text = "No fuel inserted"})
+                            }
+                        },
+                        new HBoxContainer
+                        {
+                            Children =
+                            {
+                                (EjectButton = new Button {Text = "Eject", StyleClasses = {StyleBase.ButtonOpenBoth}, Disabled = true}),
+                            }
+                        },
+                        new HBoxContainer
+                        {
+                            Children =
+                            {
+                                new Label {Text = Loc.GetString("Injection amount") + ": "},
+                                (InjectionAmount = new Label {Text = "0"})
+                            }
+                        },
+                        new HBoxContainer
+                        {
+                            Children =
+                            {
+                                (IncreaseFuelButton = new Button {Text = "Increase", StyleClasses = {StyleBase.ButtonOpenRight}}),
+                                (DecreaseFuelButton = new Button {Text = "Decrease", StyleClasses = {StyleBase.ButtonOpenLeft}}),
+                            }
+                        },
+                        new HBoxContainer
+                        {
+                            Children =
+                            {
+                                (RefreshPartsButton = new Button {Text = "Refresh Parts", StyleClasses = {StyleBase.ButtonOpenBoth }, Disabled = true }),
+                                 new Label { Text = Loc.GetString("Core count") + ": "},
+                                (CoreCount = new Label { Text = "0"}),
+                            }
+                        }
+                    }
+            });
+
+        }
+
+
+        /// <summary>
+        /// This searches recursively through all the children of "parent"
+        /// and sets the Disabled value of any buttons found to "val"
+        /// </summary>
+        /// <param name="parent">The control which childrens get searched</param>
+        /// <param name="val">The value to which disabled gets set</param>
+        private void SetButtonDisabledRecursive(Control parent, bool val)
+        {
+            foreach (var child in parent.Children)
+            {
+                if (child is Button but)
+                {
+                    but.Disabled = val;
+                    continue;
+                }
+
+                if (child.Children != null)
+                {
+                    SetButtonDisabledRecursive(child, val);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Update the UI state when new state data is received from the server.
+        /// </summary>
+        /// <param name="state">State data sent by the server.</param>
+        public void UpdateState(BoundUserInterfaceState state)
+        {
+            var castState = (AMEControllerBoundUserInterfaceState) state;
+
+            // Disable all buttons if not powered
+            if (Contents.Children != null)
+            {
+                SetButtonDisabledRecursive(Contents, !castState.HasPower);
+                EjectButton.Disabled = false;
+            }
+
+            if(!castState.HasFuelJar)
+            {
+                EjectButton.Disabled = true;
+                ToggleInjection.Disabled = true;
+                FuelAmount.Text = Loc.GetString("No fuel inserted");
+            }
+            else
+            {
+                EjectButton.Disabled = false;
+                ToggleInjection.Disabled = false;
+                FuelAmount.Text = $"{castState.FuelAmount}";
+            }
+
+            if(!castState.IsMaster)
+            {
+                ToggleInjection.Disabled = true;
+            }
+
+            RefreshPartsButton.Disabled = castState.Injecting;
+
+            CoreCount.Text = $"{castState.CoreCount}";
+            InjectionAmount.Text = $"{castState.InjectionAmount}";
+
+        }
+    }
+}

Content.Client/GameObjects/EntitySystems/DragDropSystem.cs

@@ -142,8 +142,7 @@ namespace Content.Client.GameObjects.EntitySystems
             if (_entityManager.TryGetEntity(args.EntityUid, out var entity))
             {
                 // check if the entity is reachable
-                if (_interactionSystem.InRangeUnobstructed(dragger.Transform.MapPosition,
-                    entity.Transform.MapPosition, ignoredEnt: dragger) == false)
+                if (!_interactionSystem.InRangeUnobstructed(dragger, entity))
                 {
                     return false;
                 }
@@ -193,8 +192,8 @@ namespace Content.Client.GameObjects.EntitySystems
             // tell the server we are dropping if we are over a valid drop target in range.
             // We don't use args.EntityUid here because drag interactions generally should
             // work even if there's something "on top" of the drop target
-            if (_interactionSystem.InRangeUnobstructed(_dragger.Transform.MapPosition,
-                args.Coordinates.ToMap(_mapManager), ignoredEnt: _dragger, ignoreInsideBlocker: true) == false)
+            if (!_interactionSystem.InRangeUnobstructed(_dragger,
+                args.Coordinates, ignoreInsideBlocker: true))
             {
                 CancelDrag(false, null);
                 return false;
@@ -288,8 +287,7 @@ namespace Content.Client.GameObjects.EntitySystems
                     if (anyValidDraggable)
                     {
                         // highlight depending on whether its in or out of range
-                        var inRange = _interactionSystem.InRangeUnobstructed(_dragger.Transform.MapPosition,
-                            pvsEntity.Transform.MapPosition, ignoredEnt: _dragger);
+                        var inRange = _interactionSystem.InRangeUnobstructed(_dragger, pvsEntity);
                         inRangeSprite.PostShader = inRange ? _dropTargetInRangeShader : _dropTargetOutOfRangeShader;
                         inRangeSprite.RenderOrder = EntityManager.CurrentTick.Value;
                         highlightedSprites.Add(inRangeSprite);
@@ -377,8 +375,7 @@ namespace Content.Client.GameObjects.EntitySystems
                     return;
                 }
                 // still in range of the thing we are dragging?
-                if (_interactionSystem.InRangeUnobstructed(_dragger.Transform.MapPosition,
-                        _draggedEntity.Transform.MapPosition, ignoredEnt: _dragger) == false)
+                if (!_interactionSystem.InRangeUnobstructed(_dragger, _draggedEntity))
                 {
                     CancelDrag(false, null);
                     return;

Content.Client/GameObjects/EntitySystems/MeleeWeaponSystem.cs

@@ -1,10 +1,14 @@
-using Content.Client.GameObjects.Components.Mobs;
+using System;
+using Content.Client.GameObjects.Components.Mobs;
 using Content.Client.GameObjects.Components.Weapons.Melee;
 using Content.Shared.GameObjects.Components.Weapons.Melee;
 using JetBrains.Annotations;
+using Robust.Client.GameObjects;
 using Robust.Client.Interfaces.GameObjects.Components;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.EntitySystemMessages;
 using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.Interfaces.Timing;
 using Robust.Shared.IoC;
 using Robust.Shared.Log;
 using Robust.Shared.Maths;
@@ -18,6 +22,7 @@ namespace Content.Client.GameObjects.EntitySystems
     public sealed class MeleeWeaponSystem : EntitySystem
     {
         [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
+        [Dependency] private readonly IGameTiming _gameTiming = default!;
 
         public override void Initialize()
         {
@@ -53,6 +58,26 @@ namespace Content.Client.GameObjects.EntitySystems
             var weaponArcAnimation = entity.GetComponent<MeleeWeaponArcAnimationComponent>();
             weaponArcAnimation.SetData(weaponArc, msg.Angle, attacker);
 
+            // Due to ISpriteComponent limitations, weapons that don't use an RSI won't have this effect.
+            if (EntityManager.TryGetEntity(msg.Source, out var source) && msg.TextureEffect && source.TryGetComponent(out ISpriteComponent sourceSprite)
+            && sourceSprite.BaseRSI?.Path != null)
+            {
+                var sys = Get<EffectSystem>();
+                var curTime = _gameTiming.CurTime;
+                var effect = new EffectSystemMessage
+                {
+                    EffectSprite = sourceSprite.BaseRSI.Path.ToString(),
+                    RsiState = sourceSprite.LayerGetState(0).Name,
+                    Coordinates = attacker.Transform.GridPosition,
+                    Color = Vector4.Multiply(new Vector4(255, 255, 255, 125), 1.0f),
+                    ColorDelta = Vector4.Multiply(new Vector4(0, 0, 0, -10), 1.0f),
+                    Velocity = msg.Angle.ToVec(),
+                    Acceleration = msg.Angle.ToVec() * 5f,
+                    Born = curTime,
+                    DeathTime = curTime.Add(TimeSpan.FromMilliseconds(300f)),
+                };
+                sys.CreateEffect(effect);
+            }
 
             foreach (var uid in msg.Hits)
             {

Content.Client/GameObjects/EntitySystems/StandingStateSystem.cs

@@ -0,0 +1,50 @@
+using Content.Shared.Audio;
+using Content.Shared.GameObjects.Components.Rotation;
+using Content.Shared.GameObjects.EntitySystems;
+using Robust.Client.GameObjects;
+using Robust.Client.GameObjects.EntitySystems;
+using Robust.Shared.Interfaces.GameObjects;
+
+namespace Content.Client.GameObjects.EntitySystems
+{
+    public class StandingStateSystem : SharedStandingStateSystem
+    {
+        protected override bool OnDown(IEntity entity, bool playSound = true, bool dropItems = true, bool force = false)
+        {
+            if (!entity.TryGetComponent(out AppearanceComponent appearance))
+            {
+                return false;
+            }
+
+            var newState = RotationState.Horizontal;
+            appearance.TryGetData<RotationState>(RotationVisuals.RotationState, out var oldState);
+
+            if (newState != oldState)
+            {
+                appearance.SetData(RotationVisuals.RotationState, newState);
+            }
+
+            if (playSound)
+            {
+                var file = AudioHelpers.GetRandomFileFromSoundCollection("bodyfall");
+                Get<AudioSystem>().Play(file, entity, AudioHelpers.WithVariation(0.25f));
+            }
+
+            return true;
+        }
+
+        protected override bool OnStand(IEntity entity)
+        {
+            if (!entity.TryGetComponent(out AppearanceComponent appearance)) return false;
+
+            appearance.TryGetData<RotationState>(RotationVisuals.RotationState, out var oldState);
+            var newState = RotationState.Vertical;
+
+            if (newState == oldState) return false;
+
+            appearance.SetData(RotationVisuals.RotationState, newState);
+
+            return true;
+        }
+    }
+}

Content.Client/GameObjects/EntitySystems/VerbSystem.cs

@@ -7,13 +7,16 @@ using Content.Client.State;
 using Content.Client.UserInterface;
 using Content.Client.Utility;
 using Content.Shared.GameObjects.EntitySystemMessages;
+using Content.Shared.GameObjects.EntitySystems;
 using Content.Shared.GameObjects.Verbs;
 using Content.Shared.Input;
+using Content.Shared.Physics;
 using JetBrains.Annotations;
 using Robust.Client.GameObjects.EntitySystems;
 using Robust.Client.Graphics;
 using Robust.Client.Graphics.Drawing;
 using Robust.Client.Interfaces.GameObjects.Components;
+using Robust.Client.Interfaces.Graphics.ClientEye;
 using Robust.Client.Interfaces.Input;
 using Robust.Client.Interfaces.ResourceManagement;
 using Robust.Client.Interfaces.State;
@@ -29,6 +32,7 @@ using Robust.Shared.Input;
 using Robust.Shared.Input.Binding;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Interfaces.Map;
+using Robust.Shared.Interfaces.Physics;
 using Robust.Shared.Interfaces.Timing;
 using Robust.Shared.IoC;
 using Robust.Shared.Log;
@@ -40,7 +44,7 @@ using Timer = Robust.Shared.Timers.Timer;
 namespace Content.Client.GameObjects.EntitySystems
 {
     [UsedImplicitly]
-    public sealed class VerbSystem : EntitySystem
+    public sealed class VerbSystem : SharedVerbSystem
     {
         [Dependency] private readonly IStateManager _stateManager = default!;
         [Dependency] private readonly IEntityManager _entityManager = default!;
@@ -116,10 +120,9 @@ namespace Content.Client.GameObjects.EntitySystems
             }
             
             var mapCoordinates = args.Coordinates.ToMap(_mapManager);
-            var entities = _entityManager.GetEntitiesIntersecting(mapCoordinates.MapId,
-                Box2.CenteredAround(mapCoordinates.Position, (0.5f, 0.5f))).ToList();
+            var playerEntity = _playerManager.LocalPlayer?.ControlledEntity;
             
-            if (entities.Count == 0)
+            if (playerEntity == null || !TryGetContextEntities(playerEntity, mapCoordinates, out var entities))
             {
                 return false;
             }

Content.Client/IgnoredComponents.cs

@@ -9,6 +9,7 @@
             "Breakable",
             "Pickaxe",
             "Interactable",
+            "CloningPod",
             "Destructible",
             "Temperature",
             "Explosive",
@@ -58,7 +59,6 @@
             "AccessReader",
             "IdCardConsole",
             "Airlock",
-            "MedicalScanner",
             "WirePlacer",
             "Drink",
             "Food",
@@ -156,13 +156,25 @@
             "Barotrauma",
             "GasSprayer",
             "GasVapor",
-            "MobStateManager",
             "Metabolism",
             "AiFactionTag",
             "PressureProtection",
+            "AMEPart",
+            "AMEFuelContainer",
+            "AMEShield",
             "DebugPump",
+            "PressurePump",
+            "VolumePump",
             "DebugVent",
             "DebugSiphon",
+            "SignalReceiver",
+            "SignalSwitch",
+            "SignalTransmitter",
+            "SignalButton",
+            "SignalLinker",
+            "ExtinguisherCabinet",
+            "ExtinguisherCabinetFilled",
+            "FireExtinguisher",
         };
     }
 }

Content.Client/Instruments/InstrumentMenu.cs

@@ -1,6 +1,7 @@
 using Content.Client.GameObjects.Components.Instruments;
 using Content.Client.UserInterface.Stylesheets;
-using Content.Shared.GameObjects.EntitySystems;
+using Content.Client.Utility;
+using Content.Shared.Utility;
 using Robust.Client.Audio.Midi;
 using Robust.Client.Graphics.Drawing;
 using Robust.Client.Interfaces.UserInterface;
@@ -9,7 +10,6 @@ using Robust.Client.UserInterface;
 using Robust.Client.UserInterface.Controls;
 using Robust.Client.UserInterface.CustomControls;
 using Robust.Shared.Containers;
-using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.IoC;
 using Robust.Shared.Localization;
 using Robust.Shared.Log;
@@ -197,9 +197,7 @@ namespace Content.Client.Instruments
                                         || conMan.Owner != localPlayer.ControlledEntity))) return;
 
             // We check that we're in range unobstructed just in case.
-            if(!EntitySystem.Get<SharedInteractionSystem>()
-                    .InRangeUnobstructed(localPlayer.ControlledEntity.Transform.MapPosition,
-                        instrumentEnt.Transform.MapPosition, ignoredEnt:instrumentEnt)) return;
+            if (!localPlayer.InRangeUnobstructed(instrumentEnt)) return;
 
             if (!_midiManager.IsMidiFile(filename))
             {

Content.Client/ScreenshotHook.cs

@@ -57,7 +57,7 @@ namespace Content.Client
                     }
 
                     await using var file =
-                        _resourceManager.UserData.Open(BaseScreenshotPath / $"{filename}.png", FileMode.CreateNew, FileAccess.Read, FileShare.None);
+                        _resourceManager.UserData.Open(BaseScreenshotPath / $"{filename}.png", FileMode.CreateNew, FileAccess.Write, FileShare.None);
 
                     await Task.Run(() =>
                     {

Content.Client/State/GameScreenBase.cs

@@ -2,7 +2,8 @@
 using System.Collections.Immutable;
 using System.Linq;
 using Content.Client.GameObjects.Components;
-using Content.Shared.GameObjects.EntitySystems;
+using Content.Client.Utility;
+using Content.Shared.Utility;
 using Robust.Client.GameObjects.EntitySystems;
 using Robust.Client.Interfaces.GameObjects;
 using Robust.Client.Interfaces.Graphics.ClientEye;
@@ -67,13 +68,7 @@ namespace Content.Client.State
             var inRange = false;
             if (localPlayer.ControlledEntity != null && entityToClick != null)
             {
-                var playerPos = localPlayer.ControlledEntity.Transform.MapPosition;
-                var entityPos = entityToClick.Transform.MapPosition;
-                inRange = EntitySystemManager.GetEntitySystem<SharedInteractionSystem>()
-                    .InRangeUnobstructed(playerPos, entityPos,
-                        predicate: entity =>
-                            entity == localPlayer.ControlledEntity || entity == entityToClick,
-                        ignoreInsideBlocker: true);
+                inRange = localPlayer.InRangeUnobstructed(entityToClick, ignoreInsideBlocker: true);
             }
 
             InteractionOutlineComponent outline;

Content.Client/UserInterface/AdminMenu/AdminMenuWindow.cs

@@ -1,11 +1,9 @@
 #nullable enable
-using System;
-using System.Collections.Generic;
-using System.Linq;
 using Content.Client.GameObjects.EntitySystems;
 using Content.Client.StationEvents;
 using Content.Shared.Atmos;
 using Robust.Client.Console;
+using Robust.Client.Graphics.Drawing;
 using Robust.Client.Interfaces.Placement;
 using Robust.Client.Interfaces.ResourceManagement;
 using Robust.Client.Player;
@@ -17,8 +15,12 @@ using Robust.Shared.Interfaces.Map;
 using Robust.Shared.IoC;
 using Robust.Shared.Localization;
 using Robust.Shared.Map;
+using Robust.Shared.Maths;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Utility;
+using System;
+using System.Collections.Generic;
+using System.Linq;
 using static Robust.Client.UserInterface.Controls.BaseButton;
 
 namespace Content.Client.UserInterface.AdminMenu
@@ -27,6 +29,9 @@ namespace Content.Client.UserInterface.AdminMenu
     {
         public TabContainer MasterTabContainer;
         public VBoxContainer PlayerList;
+        public Label PlayerCount;
+
+        protected override Vector2? CustomSize => (500, 250);
 
         private List<CommandButton> _adminButtons = new List<CommandButton>
         {
@@ -57,51 +62,107 @@ namespace Content.Client.UserInterface.AdminMenu
             new DirectCommandButton("Shutdown", "shutdown"),
         };
 
+        private static readonly Color SeparatorColor = Color.FromHex("#3D4059");
+        private class HSeperator : Control
+        {
+            public HSeperator()
+            {
+                AddChild(new PanelContainer {
+                    PanelOverride = new StyleBoxFlat
+                    {
+                        BackgroundColor = SeparatorColor,
+                        ContentMarginBottomOverride = 2, ContentMarginLeftOverride = 2
+                    }
+                });
+            }
+        }
+
+        private class VSeperator : PanelContainer
+        {
+            public VSeperator()
+            {
+                CustomMinimumSize = (2, 5);
+                AddChild(new PanelContainer {
+                    PanelOverride = new StyleBoxFlat {
+                        BackgroundColor = SeparatorColor
+                    }
+                });
+            }
+        }
+
         private void RefreshPlayerList(ButtonEventArgs args)
         {
             PlayerList.RemoveAllChildren();
-            var sessions = IoCManager.Resolve<IPlayerManager>().Sessions;
+            var playerManager = IoCManager.Resolve<IPlayerManager>();
+            var sessions = playerManager.Sessions;
+            PlayerCount.Text = $"Players: {playerManager.PlayerCount}";
+
+            Color altColor = Color.FromHex("#292B38");
+            Color defaultColor = Color.FromHex("#2F2F3B");
+
             var header = new HBoxContainer
             {
                 SizeFlagsHorizontal = SizeFlags.FillExpand,
+                SeparationOverride = 4,
                 Children =
                     {
                         new Label { Text = "Name",
                             SizeFlagsStretchRatio = 2f,
                             SizeFlagsHorizontal = SizeFlags.FillExpand },
+                        new VSeperator(),
                         new Label { Text = "Player",
                             SizeFlagsStretchRatio = 2f,
                             SizeFlagsHorizontal = SizeFlags.FillExpand },
+                        new VSeperator(),
                         new Label { Text = "Status",
                             SizeFlagsStretchRatio = 1f,
                             SizeFlagsHorizontal = SizeFlags.FillExpand },
+                        new VSeperator(),
                         new Label { Text = "Ping",
                             SizeFlagsStretchRatio = 1f,
                             SizeFlagsHorizontal = SizeFlags.FillExpand,
                             Align = Label.AlignMode.Right },
                     }
             };
-            PlayerList.AddChild(header);
-            PlayerList.AddChild(new Controls.HighDivider());
+            PlayerList.AddChild(new PanelContainer
+            {
+                PanelOverride = new StyleBoxFlat
+                {
+                    BackgroundColor = altColor,
+                },
+                Children =
+                {
+                    header
+                }
+            });
+            PlayerList.AddChild(new HSeperator());
+
+            var useAltColor = false;
             foreach (var player in sessions)
             {
                 var hbox = new HBoxContainer
                 {
                     SizeFlagsHorizontal = SizeFlags.FillExpand,
+                    SeparationOverride = 4,
                     Children =
                     {
                         new Label {
                             Text = player.Name,
                             SizeFlagsStretchRatio = 2f,
-                            SizeFlagsHorizontal = SizeFlags.FillExpand },
+                            SizeFlagsHorizontal = SizeFlags.FillExpand,
+                            ClipText = true },
+                        new VSeperator(),
                         new Label {
                             Text = player.AttachedEntity?.Name,
                             SizeFlagsStretchRatio = 2f,
-                            SizeFlagsHorizontal = SizeFlags.FillExpand },
+                            SizeFlagsHorizontal = SizeFlags.FillExpand,
+                            ClipText = true },
+                        new VSeperator(),
                         new Label {
                             Text = player.Status.ToString(),
                             SizeFlagsStretchRatio = 1f,
                             SizeFlagsHorizontal = SizeFlags.FillExpand },
+                        new VSeperator(),
                         new Label {
                             Text = player.Ping.ToString(),
                             SizeFlagsStretchRatio = 1f,
@@ -109,7 +170,18 @@ namespace Content.Client.UserInterface.AdminMenu
                             Align = Label.AlignMode.Right },
                     }
                 };
-                PlayerList.AddChild(hbox);
+                PlayerList.AddChild(new PanelContainer
+                {
+                    PanelOverride = new StyleBoxFlat
+                    {
+                        BackgroundColor = useAltColor ? altColor : defaultColor,
+                    },
+                    Children =
+                    {
+                        hbox
+                    }
+                });
+                useAltColor ^= true;
             }
         }
 
@@ -133,7 +205,6 @@ namespace Content.Client.UserInterface.AdminMenu
 
         public AdminMenuWindow() //TODO: search for buttons?
         {
-            CustomMinimumSize = (415,0);
             Title = Loc.GetString("Admin Menu");
 
             #region PlayerList
@@ -146,22 +217,50 @@ namespace Content.Client.UserInterface.AdminMenu
                 MarginBottomOverride = 4,
                 CustomMinimumSize = (50, 50),
             };
-            PlayerList = new VBoxContainer();
+
+            PlayerCount = new Label
+            {
+                SizeFlagsHorizontal = SizeFlags.FillExpand,
+                SizeFlagsStretchRatio = 0.7f,
+            };
             var refreshButton = new Button
             {
-                Text = "Refresh"
+                SizeFlagsHorizontal = SizeFlags.FillExpand,
+                SizeFlagsStretchRatio = 0.3f,
+                Text = "Refresh",
             };
             refreshButton.OnPressed += RefreshPlayerList;
-            RefreshPlayerList(null!);
+
+            PlayerList = new VBoxContainer();
+            
             var playerVBox = new VBoxContainer
             {
+                SizeFlagsVertical = SizeFlags.FillExpand,
                 Children =
                 {
-                    refreshButton,
-                    PlayerList
+                    new HBoxContainer
+                    {
+                        SizeFlagsHorizontal = SizeFlags.FillExpand,
+                        Children =
+                        {
+                            PlayerCount,
+                            refreshButton,
+                        }
+                    },
+                    new Control { CustomMinimumSize = (0, 5) },
+                    new ScrollContainer
+                    {
+                        SizeFlagsHorizontal = SizeFlags.FillExpand,
+                        SizeFlagsVertical = SizeFlags.FillExpand,
+                        Children =
+                        {
+                            PlayerList
+                        },
+                    },
                 }
             };
             playerTabContainer.AddChild(playerVBox);
+            RefreshPlayerList(null!);
             #endregion PlayerList
 
             #region Admin Tab

Content.Client/UserInterface/GhostGui.cs

@@ -2,12 +2,14 @@ using Content.Client.GameObjects.Components.Observer;
 using Robust.Client.UserInterface;
 using Robust.Client.UserInterface.Controls;
 using Robust.Shared.IoC;
+using Robust.Shared.Localization;
 
 namespace Content.Client.UserInterface
 {
     public class GhostGui : Control
     {
-        public Button ReturnToBody = new Button(){Text = "Return to body"};
+
+        public readonly Button ReturnToBody = new Button() {Text = Loc.GetString("Return to body")};
         private GhostComponent _owner;
 
         public GhostGui(GhostComponent owner)

Content.Client/UserInterface/StatusEffectsUI.cs

@@ -8,13 +8,12 @@ namespace Content.Client.UserInterface
     /// </summary>
     public sealed class StatusEffectsUI : Control
     {
-        public VBoxContainer VBox => _vBox;
-        private readonly VBoxContainer _vBox;
+        public VBoxContainer VBox { get; }
 
         public StatusEffectsUI()
         {
-            _vBox = new VBoxContainer();
-            AddChild(_vBox);
+            VBox = new VBoxContainer();
+            AddChild(VBox);
 
             LayoutContainer.SetGrowHorizontal(this, LayoutContainer.GrowDirection.Begin);
             LayoutContainer.SetAnchorAndMarginPreset(this, LayoutContainer.LayoutPreset.TopRight, margin: 10);

Content.Client/UserInterface/Suspicion/SuspicionGui.cs

@@ -66,7 +66,7 @@ namespace Content.Client.UserInterface.Suspicion
                 _ => throw new ArgumentException($"Invalid number of allies: {role.Allies.Count}")
             };
 
-            role.Owner.PopupMessage(role.Owner, message);
+            role.Owner.PopupMessage(message);
         }
 
         private bool TryGetComponent(out SuspicionRoleComponent suspicion)

Content.Client/Utility/RangeExtensions.cs

@@ -0,0 +1,93 @@
+using Content.Shared.GameObjects.EntitySystems;
+using Content.Shared.Physics;
+using Robust.Client.Player;
+using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Interfaces.GameObjects.Components;
+using Robust.Shared.Interfaces.Map;
+using Robust.Shared.IoC;
+using Robust.Shared.Map;
+using static Content.Shared.GameObjects.EntitySystems.SharedInteractionSystem;
+
+namespace Content.Client.Utility
+{
+    public static class RangeExtensions
+    {
+        private static SharedInteractionSystem SharedInteractionSystem => EntitySystem.Get<SharedInteractionSystem>();
+
+        public static bool InRangeUnobstructed(
+            this LocalPlayer origin,
+            IEntity other,
+            float range = InteractionRange,
+            CollisionGroup collisionMask = CollisionGroup.Impassable,
+            Ignored predicate = null,
+            bool ignoreInsideBlocker = false,
+            bool popup = false)
+        {
+            var otherPosition = other.Transform.MapPosition;
+
+            return origin.InRangeUnobstructed(otherPosition, range, collisionMask, predicate, ignoreInsideBlocker,
+                popup);
+        }
+
+        public static bool InRangeUnobstructed(
+            this LocalPlayer origin,
+            IComponent other,
+            float range = InteractionRange,
+            CollisionGroup collisionMask = CollisionGroup.Impassable,
+            Ignored predicate = null,
+            bool ignoreInsideBlocker = false,
+            bool popup = false)
+        {
+            return origin.InRangeUnobstructed(other.Owner, range, collisionMask, predicate, ignoreInsideBlocker, popup);
+        }
+
+        public static bool InRangeUnobstructed(
+            this LocalPlayer origin,
+            IContainer other,
+            float range = InteractionRange,
+            CollisionGroup collisionMask = CollisionGroup.Impassable,
+            Ignored predicate = null,
+            bool ignoreInsideBlocker = false,
+            bool popup = false)
+        {
+            return origin.InRangeUnobstructed(other.Owner, range, collisionMask, predicate, ignoreInsideBlocker, popup);
+        }
+
+        public static bool InRangeUnobstructed(
+            this LocalPlayer origin,
+            GridCoordinates other,
+            float range = InteractionRange,
+            CollisionGroup collisionMask = CollisionGroup.Impassable,
+            Ignored predicate = null,
+            bool ignoreInsideBlocker = false,
+            bool popup = false)
+        {
+            var mapManager = IoCManager.Resolve<IMapManager>();
+            var otherPosition = other.ToMap(mapManager);
+
+            return origin.InRangeUnobstructed(otherPosition, range, collisionMask, predicate, ignoreInsideBlocker,
+                popup);
+        }
+
+        public static bool InRangeUnobstructed(
+            this LocalPlayer origin,
+            MapCoordinates other,
+            float range = InteractionRange,
+            CollisionGroup collisionMask = CollisionGroup.Impassable,
+            Ignored predicate = null,
+            bool ignoreInsideBlocker = false,
+            bool popup = false)
+        {
+            var originEntity = origin.ControlledEntity;
+            if (originEntity == null)
+            {
+                // TODO: Take into account the player's camera position?
+                return false;
+            }
+
+            return SharedInteractionSystem.InRangeUnobstructed(originEntity, other, range, collisionMask, predicate,
+                ignoreInsideBlocker, popup);
+        }
+    }
+}

Content.IntegrationTests/Tests/EntityTest.cs

@@ -1,10 +1,8 @@
 using System;
 using System.Collections.Generic;
-using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
 using NUnit.Framework;
-using Robust.Server.Interfaces.Maps;
 using Robust.Server.Interfaces.Timing;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Interfaces.GameObjects;
@@ -26,11 +24,13 @@ namespace Content.IntegrationTests.Tests
         {
             var server = StartServerDummyTicker();
             await server.WaitIdleAsync();
-            var mapMan = server.ResolveDependency<IMapManager>();
+
+            var mapManager = server.ResolveDependency<IMapManager>();
             var entityMan = server.ResolveDependency<IEntityManager>();
             var prototypeMan = server.ResolveDependency<IPrototypeManager>();
-            var mapLoader = server.ResolveDependency<IMapLoader>();
-            var pauseMan = server.ResolveDependency<IPauseManager>();
+            var pauseManager = server.ResolveDependency<IPauseManager>();
+            var tileDefinitionManager = server.ResolveDependency<ITileDefinitionManager>();
+
             var prototypes = new List<EntityPrototype>();
             IMapGrid grid = default;
             IEntity testEntity;
@@ -38,9 +38,25 @@ namespace Content.IntegrationTests.Tests
             //Build up test environment
             server.Post(() =>
             {
-                var mapId = mapMan.CreateMap();
-                pauseMan.AddUninitializedMap(mapId);
-                grid = mapLoader.LoadBlueprint(mapId, "Maps/stationstation.yml");
+                // Create a one tile grid to stave off the grid 0 monsters
+                var mapId = mapManager.CreateMap();
+
+                pauseManager.AddUninitializedMap(mapId);
+
+                var gridId = new GridId(1);
+
+                if (!mapManager.TryGetGrid(gridId, out grid))
+                {
+                    grid = mapManager.CreateGrid(mapId, gridId);
+                }
+
+                var tileDefinition = tileDefinitionManager["underplating"];
+                var tile = new Tile(tileDefinition.TileId);
+                var coordinates = new GridCoordinates(0, 0, gridId);
+
+                grid.SetTile(coordinates, tile);
+
+                pauseManager.DoMapInitialize(mapId);
             });
 
             server.Assert(() =>
@@ -54,6 +70,7 @@ namespace Content.IntegrationTests.Tests
                     {
                         continue;
                     }
+
                     prototypes.Add(prototype);
                 }
 
@@ -91,7 +108,8 @@ namespace Content.IntegrationTests.Tests
                         continue;
                     }
 
-                    Assert.That(prototype.Components.ContainsKey("Icon"), $"Entity {prototype.ID} does not have an Icon component, but is not abstract");
+                    Assert.That(prototype.Components.ContainsKey("Icon"),
+                        $"Entity {prototype.ID} does not have an Icon component, but is not abstract");
                 }
             });
 
@@ -115,28 +133,37 @@ namespace Content.IntegrationTests.Tests
 - type: entity
   id: AllComponentsOneToOneDeleteTestEntity";
 
-            var server = StartServerDummyTicker();
+            var server = StartServerDummyTicker(new ServerContentIntegrationOption {ExtraPrototypes = testEntity});
             await server.WaitIdleAsync();
 
             var mapManager = server.ResolveDependency<IMapManager>();
             var entityManager = server.ResolveDependency<IEntityManager>();
-            var mapLoader = server.ResolveDependency<IMapLoader>();
             var pauseManager = server.ResolveDependency<IPauseManager>();
             var componentFactory = server.ResolveDependency<IComponentFactory>();
-            var prototypeManager = server.ResolveDependency<IPrototypeManager>();
+            var tileDefinitionManager = server.ResolveDependency<ITileDefinitionManager>();
 
             IMapGrid grid = default;
 
             server.Post(() =>
             {
-                // Load test entity
-                using var reader = new StringReader(testEntity);
-                prototypeManager.LoadFromStream(reader);
-
-                // Load test map
+                // Create a one tile grid to stave off the grid 0 monsters
                 var mapId = mapManager.CreateMap();
+
                 pauseManager.AddUninitializedMap(mapId);
-                grid = mapLoader.LoadBlueprint(mapId, "Maps/stationstation.yml");
+
+                var gridId = new GridId(1);
+
+                if (!mapManager.TryGetGrid(gridId, out grid))
+                {
+                    grid = mapManager.CreateGrid(mapId, gridId);
+                }
+
+                var tileDefinition = tileDefinitionManager["underplating"];
+                var tile = new Tile(tileDefinition.TileId);
+                var coordinates = new GridCoordinates(0, 0, gridId);
+
+                grid.SetTile(coordinates, tile);
+
                 pauseManager.DoMapInitialize(mapId);
             });
 
@@ -201,28 +228,37 @@ namespace Content.IntegrationTests.Tests
 - type: entity
   id: AllComponentsOneEntityDeleteTestEntity";
 
-            var server = StartServerDummyTicker();
+            var server = StartServerDummyTicker(new ServerContentIntegrationOption {ExtraPrototypes = testEntity});
             await server.WaitIdleAsync();
 
             var mapManager = server.ResolveDependency<IMapManager>();
             var entityManager = server.ResolveDependency<IEntityManager>();
-            var mapLoader = server.ResolveDependency<IMapLoader>();
             var pauseManager = server.ResolveDependency<IPauseManager>();
             var componentFactory = server.ResolveDependency<IComponentFactory>();
-            var prototypeManager = server.ResolveDependency<IPrototypeManager>();
+            var tileDefinitionManager = server.ResolveDependency<ITileDefinitionManager>();
 
             IMapGrid grid = default;
 
             server.Post(() =>
             {
-                // Load test entity
-                using var reader = new StringReader(testEntity);
-                prototypeManager.LoadFromStream(reader);
-
-                // Load test map
+                // Create a one tile grid to stave off the grid 0 monsters
                 var mapId = mapManager.CreateMap();
+
                 pauseManager.AddUninitializedMap(mapId);
-                grid = mapLoader.LoadBlueprint(mapId, "Maps/stationstation.yml");
+
+                var gridId = new GridId(1);
+
+                if (!mapManager.TryGetGrid(gridId, out grid))
+                {
+                    grid = mapManager.CreateGrid(mapId, gridId);
+                }
+
+                var tileDefinition = tileDefinitionManager["underplating"];
+                var tile = new Tile(tileDefinition.TileId);
+                var coordinates = new GridCoordinates(0, 0, gridId);
+
+                grid.SetTile(coordinates, tile);
+
                 pauseManager.DoMapInitialize(mapId);
             });
 

Content.IntegrationTests/Tests/Fluids/PuddleTest.cs

@@ -0,0 +1,102 @@
+using System.Threading.Tasks;
+using Content.Server.GameObjects.Components.Fluids;
+using Content.Shared.Chemistry;
+using NUnit.Framework;
+using Robust.Server.Interfaces.Timing;
+using Robust.Shared.Interfaces.Map;
+using Robust.Shared.Map;
+
+namespace Content.IntegrationTests.Tests.Fluids
+{
+    [TestFixture]
+    [TestOf(typeof(PuddleComponent))]
+    public class PuddleTest : ContentIntegrationTest
+    {
+        [Test]
+        public async Task TilePuddleTest()
+        {
+            var server = StartServerDummyTicker();
+
+            await server.WaitIdleAsync();
+
+            var mapManager = server.ResolveDependency<IMapManager>();
+            var pauseManager = server.ResolveDependency<IPauseManager>();
+            var tileDefinitionManager = server.ResolveDependency<ITileDefinitionManager>();
+
+            GridCoordinates coordinates = default;
+
+            // Build up test environment
+            server.Post(() =>
+            {
+                // Create a one tile grid to spill onto
+                var mapId = mapManager.CreateMap();
+
+                pauseManager.AddUninitializedMap(mapId);
+
+                var gridId = new GridId(1);
+
+                if (!mapManager.TryGetGrid(gridId, out var grid))
+                {
+                    grid = mapManager.CreateGrid(mapId, gridId);
+                }
+
+                var tileDefinition = tileDefinitionManager["underplating"];
+                var tile = new Tile(tileDefinition.TileId);
+                coordinates = new GridCoordinates(0, 0, gridId);
+
+                grid.SetTile(coordinates, tile);
+
+                pauseManager.DoMapInitialize(mapId);
+            });
+
+            await server.WaitIdleAsync();
+
+            server.Assert(() =>
+            {
+                var solution = new Solution("water", ReagentUnit.New(20));
+                var puddle = solution.SpillAt(coordinates, "PuddleSmear");
+                Assert.NotNull(puddle);
+            });
+
+            await server.WaitIdleAsync();
+        }
+
+        [Test]
+        public async Task SpaceNoPuddleTest()
+        {
+            var server = StartServerDummyTicker();
+
+            await server.WaitIdleAsync();
+            var mapManager = server.ResolveDependency<IMapManager>();
+            var pauseManager = server.ResolveDependency<IPauseManager>();
+
+            // Build up test environment
+            server.Post(() =>
+            {
+                var mapId = mapManager.CreateMap();
+
+                pauseManager.AddUninitializedMap(mapId);
+
+                var gridId = new GridId(1);
+
+                if (!mapManager.GridExists(gridId))
+                {
+                    mapManager.CreateGrid(mapId, gridId);
+                }
+            });
+
+            await server.WaitIdleAsync();
+
+            server.Assert(() =>
+            {
+                var gridId = new GridId(1);
+                var coordinates = new GridCoordinates(0, 0, gridId);
+                var solution = new Solution("water", ReagentUnit.New(20));
+                var puddle = solution.SpillAt(coordinates, "PuddleSmear");
+                Assert.Null(puddle);
+            });
+
+            await server.WaitIdleAsync();
+        }
+    }
+}

Content.IntegrationTests/Tests/GameObjects/Components/ActionBlocking/CuffUnitTest.cs

@@ -87,7 +87,7 @@ namespace Content.IntegrationTests.Tests.GameObjects.Components.ActionBlocking
             var slot = part.GetHashCode().ToString();
 
             body.Template.Slots.Add(slot, BodyPartType.Hand);
-            body.InstallBodyPart(part, slot);
+            body.TryAddPart(slot, part, true);
         }
     }
 }

Content.IntegrationTests/Tests/Interaction/InRangeUnobstructed.cs

@@ -0,0 +1,159 @@
+using System.Threading.Tasks;
+using Content.Client.Utility;
+using Content.Shared.GameObjects.EntitySystems;
+using Content.Shared.Utility;
+using NUnit.Framework;
+using Robust.Server.GameObjects.Components.Container;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Interfaces.GameObjects.Components;
+using Robust.Shared.Interfaces.Map;
+using Robust.Shared.Map;
+
+namespace Content.IntegrationTests.Tests.Interaction
+{
+    [TestFixture]
+    [TestOf(typeof(SharedInteractionSystem))]
+    [TestOf(typeof(SharedRangeExtensions))]
+    [TestOf(typeof(RangeExtensions))]
+    public class InRangeUnobstructed : ContentIntegrationTest
+    {
+        private const string HumanId = "BaseHumanMob_Content";
+
+        private const float InteractionRange = SharedInteractionSystem.InteractionRange;
+
+        private const float InteractionRangeDivided15 = InteractionRange / 1.5f;
+
+        private readonly (float, float) _interactionRangeDivided15X = (InteractionRangeDivided15, 0f);
+
+        private const float InteractionRangeDivided15Times3 = InteractionRangeDivided15 * 3;
+
+        [Test]
+        public async Task EntityEntityTest()
+        {
+            var server = StartServerDummyTicker();
+
+            await server.WaitIdleAsync();
+
+            var entityManager = server.ResolveDependency<IEntityManager>();
+            var mapManager = server.ResolveDependency<IMapManager>();
+
+            IEntity origin = null;
+            IEntity other = null;
+            IContainer container = null;
+            IComponent component = null;
+            GridCoordinates gridCoordinates = default;
+            MapCoordinates mapCoordinates = default;
+
+            server.Assert(() =>
+            {
+                mapManager.CreateNewMapEntity(MapId.Nullspace);
+                var coordinates = MapCoordinates.Nullspace;
+
+                origin = entityManager.SpawnEntity(HumanId, coordinates);
+                other = entityManager.SpawnEntity(HumanId, coordinates);
+                container = ContainerManagerComponent.Ensure<Container>("InRangeUnobstructedTestOtherContainer", other);
+                component = other.Transform;
+                gridCoordinates = other.Transform.GridPosition;
+                mapCoordinates = other.Transform.MapPosition;
+            });
+
+            await server.WaitIdleAsync();
+
+            server.Assert(() =>
+            {
+                // Entity <-> Entity
+                Assert.True(origin.InRangeUnobstructed(other));
+                Assert.True(other.InRangeUnobstructed(origin));
+
+                // Entity <-> Component
+                Assert.True(origin.InRangeUnobstructed(component));
+                Assert.True(component.InRangeUnobstructed(origin));
+
+                // Entity <-> Container
+                Assert.True(origin.InRangeUnobstructed(container));
+                Assert.True(container.InRangeUnobstructed(origin));
+
+                // Entity <-> GridCoordinates
+                Assert.True(origin.InRangeUnobstructed(gridCoordinates));
+                Assert.True(gridCoordinates.InRangeUnobstructed(origin));
+
+                // Entity <-> MapCoordinates
+                Assert.True(origin.InRangeUnobstructed(mapCoordinates));
+                Assert.True(mapCoordinates.InRangeUnobstructed(origin));
+
+
+                // Move them slightly apart
+                origin.Transform.LocalPosition += _interactionRangeDivided15X;
+
+                // Entity <-> Entity
+                Assert.True(origin.InRangeUnobstructed(other));
+                Assert.True(other.InRangeUnobstructed(origin));
+
+                // Entity <-> Component
+                Assert.True(origin.InRangeUnobstructed(component));
+                Assert.True(component.InRangeUnobstructed(origin));
+
+                // Entity <-> Container
+                Assert.True(origin.InRangeUnobstructed(container));
+                Assert.True(container.InRangeUnobstructed(origin));
+
+                // Entity <-> GridCoordinates
+                Assert.True(origin.InRangeUnobstructed(gridCoordinates));
+                Assert.True(gridCoordinates.InRangeUnobstructed(origin));
+
+                // Entity <-> MapCoordinates
+                Assert.True(origin.InRangeUnobstructed(mapCoordinates));
+                Assert.True(mapCoordinates.InRangeUnobstructed(origin));
+
+
+                // Move them out of range
+                origin.Transform.LocalPosition += _interactionRangeDivided15X;
+
+                // Entity <-> Entity
+                Assert.False(origin.InRangeUnobstructed(other));
+                Assert.False(other.InRangeUnobstructed(origin));
+
+                // Entity <-> Component
+                Assert.False(origin.InRangeUnobstructed(component));
+                Assert.False(component.InRangeUnobstructed(origin));
+
+                // Entity <-> Container
+                Assert.False(origin.InRangeUnobstructed(container));
+                Assert.False(container.InRangeUnobstructed(origin));
+
+                // Entity <-> GridCoordinates
+                Assert.False(origin.InRangeUnobstructed(gridCoordinates));
+                Assert.False(gridCoordinates.InRangeUnobstructed(origin));
+
+                // Entity <-> MapCoordinates
+                Assert.False(origin.InRangeUnobstructed(mapCoordinates));
+                Assert.False(mapCoordinates.InRangeUnobstructed(origin));
+
+
+                // Checks with increased range
+
+                // Entity <-> Entity
+                Assert.True(origin.InRangeUnobstructed(other, InteractionRangeDivided15Times3));
+                Assert.True(other.InRangeUnobstructed(origin, InteractionRangeDivided15Times3));
+
+                // Entity <-> Component
+                Assert.True(origin.InRangeUnobstructed(component, InteractionRangeDivided15Times3));
+                Assert.True(component.InRangeUnobstructed(origin, InteractionRangeDivided15Times3));
+
+                // Entity <-> Container
+                Assert.True(origin.InRangeUnobstructed(container, InteractionRangeDivided15Times3));
+                Assert.True(container.InRangeUnobstructed(origin, InteractionRangeDivided15Times3));
+
+                // Entity <-> GridCoordinates
+                Assert.True(origin.InRangeUnobstructed(gridCoordinates, InteractionRangeDivided15Times3));
+                Assert.True(gridCoordinates.InRangeUnobstructed(origin, InteractionRangeDivided15Times3));
+
+                // Entity <-> MapCoordinates
+                Assert.True(origin.InRangeUnobstructed(mapCoordinates, InteractionRangeDivided15Times3));
+                Assert.True(mapCoordinates.InRangeUnobstructed(origin, InteractionRangeDivided15Times3));
+            });
+
+            await server.WaitIdleAsync();
+        }
+    }
+}

Content.IntegrationTests/Tests/PostMapInitTest.cs

@@ -0,0 +1,60 @@
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using NUnit.Framework;
+using Robust.Shared.Interfaces.Resources;
+using Robust.Shared.Utility;
+using YamlDotNet.RepresentationModel;
+
+namespace Content.IntegrationTests.Tests
+{
+    [TestFixture]
+    public class PostMapInitTest : ContentIntegrationTest
+    {
+        public readonly string[] SkippedMaps =
+        {
+            "/Maps/Pathfinding/simple.yml"
+        };
+
+        [Test]
+        public async Task NoSavedPostMapInitTest()
+        {
+            var server = StartServerDummyTicker();
+
+            await server.WaitIdleAsync();
+
+            var resourceManager = server.ResolveDependency<IResourceManager>();
+            var mapFolder = new ResourcePath("/Maps");
+            var maps = resourceManager
+                .ContentFindFiles(mapFolder)
+                .Where(filePath => filePath.Extension == "yml" && !filePath.Filename.StartsWith("."))
+                .ToArray();
+
+            foreach (var map in maps)
+            {
+                var rootedPath = map.ToRootedPath();
+
+                if (SkippedMaps.Contains(rootedPath.ToString()))
+                {
+                    continue;
+                }
+
+                if (!resourceManager.TryContentFileRead(rootedPath, out var fileStream))
+                {
+                    Assert.Fail($"Map not found: {rootedPath}");
+                }
+
+                using var reader = new StreamReader(fileStream);
+                var yamlStream = new YamlStream();
+
+                yamlStream.Load(reader);
+
+                var root = yamlStream.Documents[0].RootNode;
+                var meta = root["meta"];
+                var postMapInit = meta["postmapinit"].AsBool();
+
+                Assert.False(postMapInit);
+            }
+        }
+    }
+}

Content.Server/AI/Operators/Inventory/CloseStorageOperator.cs

@@ -3,6 +3,7 @@ using Content.Server.AI.WorldState.States.Inventory;
 using Content.Server.GameObjects.Components.Items.Storage;
 using Content.Server.Utility;
 using Content.Shared.Interfaces.GameObjects.Components;
+using Content.Shared.Utility;
 using Robust.Shared.Interfaces.GameObjects;
 
 namespace Content.Server.AI.Operators.Inventory
@@ -50,7 +51,7 @@ namespace Content.Server.AI.Operators.Inventory
 
         public override Outcome Execute(float frameTime)
         {
-            if (!InteractionChecks.InRangeUnobstructed(_owner, _target.Transform.MapPosition))
+            if (!_owner.InRangeUnobstructed(_target, popup: true))
             {
                 return Outcome.Failed;
             }

Content.Server/AI/Operators/Inventory/InteractWithEntityOperator.cs

@@ -1,6 +1,7 @@
 using Content.Server.GameObjects.Components.Mobs;
 using Content.Server.GameObjects.EntitySystems.Click;
 using Content.Server.Utility;
+using Content.Shared.Utility;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.IoC;
 
@@ -28,7 +29,7 @@ namespace Content.Server.AI.Operators.Inventory
                 return Outcome.Failed;
             }
 
-            if (!InteractionChecks.InRangeUnobstructed(_owner, _useTarget.Transform.MapPosition))
+            if (!_owner.InRangeUnobstructed(_useTarget, popup: true))
             {
                 return Outcome.Failed;
             }

Content.Server/AI/Operators/Inventory/OpenStorageOperator.cs

@@ -4,6 +4,7 @@ using Content.Server.AI.WorldState.States.Inventory;
 using Content.Server.GameObjects.Components.Items.Storage;
 using Content.Server.Utility;
 using Content.Shared.Interfaces.GameObjects.Components;
+using Content.Shared.Utility;
 using Robust.Shared.Containers;
 using Robust.Shared.Interfaces.GameObjects;
 
@@ -30,7 +31,7 @@ namespace Content.Server.AI.Operators.Inventory
                 return Outcome.Success;
             }
 
-            if (!InteractionChecks.InRangeUnobstructed(_owner, container.Owner.Transform.MapPosition, ignoredEnt: container.Owner))
+            if (!_owner.InRangeUnobstructed(container, popup: true))
             {
                 return Outcome.Failed;
             }

Content.Server/AI/Operators/Inventory/PickupEntityOperator.cs

@@ -3,6 +3,7 @@ using Content.Server.GameObjects.Components.GUI;
 using Content.Server.GameObjects.Components.Items.Storage;
 using Content.Server.GameObjects.EntitySystems.Click;
 using Content.Server.Utility;
+using Content.Shared.Utility;
 using Robust.Shared.Containers;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.IoC;
@@ -26,7 +27,7 @@ namespace Content.Server.AI.Operators.Inventory
             if (_target.Deleted ||
                 !_target.HasComponent<ItemComponent>() ||
                 ContainerHelpers.IsInContainer(_target) ||
-                !InteractionChecks.InRangeUnobstructed(_owner, _target.Transform.MapPosition))
+                !_owner.InRangeUnobstructed(_target, popup: true))
             {
                 return Outcome.Failed;
             }

Content.Server/AI/Utility/Considerations/Combat/Melee/MeleeWeaponSpeedCon.cs

@@ -15,7 +15,7 @@ namespace Content.Server.AI.Utility.Considerations.Combat.Melee
                 return 0.0f;
             }
 
-            return meleeWeaponComponent.CooldownTime / 10.0f;
+            return meleeWeaponComponent.ArcCooldownTime / 10.0f;
         }
     }
 }

Content.Server/AI/WorldState/States/Mobs/NearbyBodiesState.cs

@@ -21,7 +21,7 @@ namespace Content.Server.AI.WorldState.States.Mobs
                 return result;
             }
 
-            foreach (var entity in Visibility.GetEntitiesInRange(Owner.Transform.GridPosition, typeof(IBodyManagerComponent), controller.VisionRadius))
+            foreach (var entity in Visibility.GetEntitiesInRange(Owner.Transform.GridPosition, typeof(ISharedBodyManagerComponent), controller.VisionRadius))
             {
                 if (entity == Owner) continue;
                 result.Add(entity);

Content.Server/Administration/DeleteEntitiesWithId.cs

@@ -0,0 +1,39 @@
+#nullable enable
+using Robust.Server.Interfaces.Console;
+using Robust.Server.Interfaces.Player;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.IoC;
+
+namespace Content.Server.Administration
+{
+    public class DeleteEntitiesWithId : IClientCommand
+    {
+        public string Command => "deleteewi";
+        public string Description => "Deletes entities with the specified prototype ID.";
+        public string Help => $"Usage: {Command} <prototypeID>";
+
+        public void Execute(IConsoleShell shell, IPlayerSession? player, string[] args)
+        {
+            if (args.Length != 1)
+            {
+                shell.SendText(player, Help);
+                return;
+            }
+
+            var id = args[0].ToLower();
+            var entityManager = IoCManager.Resolve<IEntityManager>();
+            var query = new PredicateEntityQuery(e => e.Prototype?.ID.ToLower() == id);
+            var entities = entityManager.GetEntities(query);
+            var i = 0;
+
+            foreach (var entity in entities)
+            {
+                entity.Delete();
+                i++;
+            }
+
+            shell.SendText(player, $"Deleted all entities with id {id}. Occurrences: {i}");
+        }
+    }
+}

Content.Server/Atmos/AtmosCommands.cs

@@ -17,11 +17,21 @@ namespace Content.Server.Atmos
     {
         public string Command => "addatmos";
         public string Description => "Adds atmos support to a grid.";
-        public string Help => "addatmos <GridId>";
+        public string Help => $"{Command} <GridId>";
+
         public void Execute(IConsoleShell shell, IPlayerSession? player, string[] args)
         {
-            if (args.Length < 1) return;
-            if(!int.TryParse(args[0], out var id)) return;
+            if (args.Length < 1)
+            {
+                shell.SendText(player, Help);
+                return;
+            }
+
+            if (!int.TryParse(args[0], out var id))
+            {
+                shell.SendText(player, $"{args[0]} is not a valid integer.");
+                return;
+            }
 
             var gridId = new GridId(id);
 
@@ -29,7 +39,7 @@ namespace Content.Server.Atmos
 
             if (!gridId.IsValid() || !mapMan.TryGetGrid(gridId, out var gridComp))
             {
-                shell.SendText(player, "Invalid grid ID.");
+                shell.SendText(player, $"{gridId} is not a valid grid id.");
                 return;
             }
 
@@ -41,7 +51,7 @@ namespace Content.Server.Atmos
                 return;
             }
 
-            if (grid.HasComponent<GridAtmosphereComponent>())
+            if (grid.HasComponent<IGridAtmosphereComponent>())
             {
                 shell.SendText(player, "Grid already has an atmosphere.");
                 return;
@@ -53,6 +63,56 @@ namespace Content.Server.Atmos
         }
     }
 
+    public class AddUnsimulatedAtmos : IClientCommand
+    {
+        public string Command => "addunsimulatedatmos";
+        public string Description => "Adds unimulated atmos support to a grid.";
+        public string Help => $"{Command} <GridId>";
+
+        public void Execute(IConsoleShell shell, IPlayerSession? player, string[] args)
+        {
+            if (args.Length < 1)
+            {
+                shell.SendText(player, Help);
+                return;
+            }
+
+            if (!int.TryParse(args[0], out var id))
+            {
+                shell.SendText(player, $"{args[0]} is not a valid integer.");
+                return;
+            }
+
+            var gridId = new GridId(id);
+
+            var mapMan = IoCManager.Resolve<IMapManager>();
+
+            if (!gridId.IsValid() || !mapMan.TryGetGrid(gridId, out var gridComp))
+            {
+                shell.SendText(player, $"{gridId} is not a valid grid id.");
+                return;
+            }
+
+            var entMan = IoCManager.Resolve<IEntityManager>();
+
+            if (!entMan.TryGetEntity(gridComp.GridEntityId, out var grid))
+            {
+                shell.SendText(player, "Failed to get grid entity.");
+                return;
+            }
+
+            if (grid.HasComponent<IGridAtmosphereComponent>())
+            {
+                shell.SendText(player, "Grid already has an atmosphere.");
+                return;
+            }
+
+            grid.AddComponent<UnsimulatedGridAtmosphereComponent>();
+
+            shell.SendText(player, $"Added unsimulated atmosphere to grid {id}.");
+        }
+    }
+
     public class ListGases : IClientCommand
     {
         public string Command => "listgases";

Content.Server/Atmos/ExcitedGroup.cs

@@ -105,6 +105,7 @@ namespace Content.Server.Atmos
             {
                 if (tile?.Air == null) continue;
                 tile.Air.CopyFromMutable(combined);
+                tile.AtmosCooldown = 0;
                 tile.UpdateVisuals();
             }
 
@@ -131,7 +132,7 @@ namespace Content.Server.Atmos
             _disposed = true;
             _gridAtmosphereComponent.RemoveExcitedGroup(this);
 
-            Dismantle();
+            Dismantle(false);
 
             _gridAtmosphereComponent = null;
         }

Content.Server/Atmos/GasSprayerComponent.cs

@@ -1,7 +1,7 @@
 using Content.Server.GameObjects.Components.Chemistry;
-using Content.Server.Interfaces;
 using Content.Shared.Chemistry;
 using Content.Shared.GameObjects.Components;
+using Content.Shared.Interfaces;
 using Content.Shared.Interfaces.GameObjects.Components;
 using Robust.Server.GameObjects;
 using Robust.Server.GameObjects.EntitySystems;
@@ -13,13 +13,11 @@ using Robust.Shared.Localization;
 using Robust.Shared.Maths;
 using Robust.Shared.Serialization;
 
-
 namespace Content.Server.Atmos
 {
     [RegisterComponent]
     public class GasSprayerComponent : Component, IAfterInteract
     {
-        [Dependency] private readonly IServerNotifyManager _notifyManager = default!;
         [Dependency] private readonly IServerEntityManager _serverEntityManager = default!;
 
         //TODO: create a function that can create a gas based on a solution mix
@@ -48,7 +46,7 @@ namespace Content.Server.Atmos
 
             if (tank.Solution.GetReagentQuantity(_fuelType) == 0)
             {
-                _notifyManager.PopupMessage(Owner, eventArgs.User,
+                Owner.PopupMessage(eventArgs.User,
                     Loc.GetString("{0:theName} is out of {1}!", Owner, _fuelName));
             }
             else

Content.Server/Atmos/TileAtmosphere.cs

@@ -9,6 +9,7 @@ using Content.Server.Interfaces;
 using Content.Shared.Atmos;
 using Content.Shared.Audio;
 using Content.Shared.Maps;
+using JetBrains.Annotations;
 using Robust.Server.GameObjects.EntitySystems;
 using Robust.Shared.Containers;
 using Robust.Shared.GameObjects;
@@ -40,6 +41,9 @@ namespace Content.Server.Atmos
         [ViewVariables]
         private static GasTileOverlaySystem _gasTileOverlaySystem;
 
+        [ViewVariables]
+        public int AtmosCooldown { get; set; } = 0;
+
         [ViewVariables]
         private float _temperature = Atmospherics.T20C;
 
@@ -73,9 +77,11 @@ namespace Content.Server.Atmos
         [ViewVariables]
         private readonly TileAtmosphere[] _adjacentTiles = new TileAtmosphere[Atmospherics.Directions];
 
-        [ViewVariables]
         private AtmosDirection _adjacentBits = AtmosDirection.Invalid;
 
+        [ViewVariables, UsedImplicitly]
+        private int AdjacentBitsInt => (int)_adjacentBits;
+
         [ViewVariables]
         private TileAtmosInfo _tileAtmosInfo;
 
@@ -84,6 +90,9 @@ namespace Content.Server.Atmos
 
         private AtmosDirection _pressureDirection;
 
+        [ViewVariables, UsedImplicitly]
+        private int PressureDirectionInt => (int)_pressureDirection;
+
         [ViewVariables]
         public GridId GridIndex { get; }
 
@@ -635,6 +644,15 @@ namespace Content.Server.Atmos
 
             _currentCycle = fireCount;
             var adjacentTileLength = 0;
+
+            AtmosCooldown++;
+            for (var i = 0; i < Atmospherics.Directions; i++)
+            {
+                var direction = (AtmosDirection) (1 << i);
+                if(_adjacentBits.HasFlag(direction))
+                    adjacentTileLength++;
+            }
+
             for(var i = 0; i < Atmospherics.Directions; i++)
             {
                 var direction = (AtmosDirection) (1 << i);
@@ -643,7 +661,6 @@ namespace Content.Server.Atmos
 
                 // If the tile is null or has no air, we don't do anything for it.
                 if(enemyTile?.Air == null) continue;
-                adjacentTileLength++;
                 if (fireCount <= enemyTile._currentCycle) continue;
                 enemyTile.Archive(fireCount);
 
@@ -703,7 +720,13 @@ namespace Content.Server.Atmos
             React();
             UpdateVisuals();
 
-            if((!(Air.Temperature > Atmospherics.MinimumTemperatureStartSuperConduction && ConsiderSuperconductivity(true))) && ExcitedGroup == null)
+            var remove = true;
+
+            if(Air.Temperature > Atmospherics.MinimumTemperatureStartSuperConduction)
+                if (ConsiderSuperconductivity(true))
+                    remove = false;
+
+            if((ExcitedGroup == null && remove) || (AtmosCooldown > (Atmospherics.ExcitedGroupsDismantleCycles * 2)))
                 _gridAtmosphereComponent.RemoveActiveTile(this);
         }
 
@@ -1143,9 +1166,11 @@ namespace Content.Server.Atmos
             if (lastShare > Atmospherics.MinimumAirToSuspend)
             {
                 ExcitedGroup.ResetCooldowns();
+                AtmosCooldown = 0;
             } else if (lastShare > Atmospherics.MinimumMolesDeltaToMove)
             {
                 ExcitedGroup.DismantleCooldown = 0;
+                AtmosCooldown = 0;
             }
         }
 

Content.Server/Body/BodyCommands.cs

@@ -1,14 +1,19 @@
 #nullable enable
-using System.Linq;
 using Content.Server.GameObjects.Components.Body;
 using Content.Shared.Body.Part;
+using Content.Shared.Damage;
 using Content.Shared.GameObjects.Components.Body;
+using Content.Shared.GameObjects.Components.Damage;
 using Robust.Server.Interfaces.Console;
 using Robust.Server.Interfaces.Player;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Interfaces.Random;
 using Robust.Shared.IoC;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Random;
+using System;
+using System.Linq;
 
 namespace Content.Server.Body
 {
@@ -48,7 +53,7 @@ namespace Content.Server.Body
             var slot = part.GetHashCode().ToString();
 
             body.Template.Slots.Add(slot, BodyPartType.Hand);
-            body.InstallBodyPart(part, slot);
+            body.TryAddPart(slot, part, true);
         }
     }
 
@@ -144,4 +149,89 @@ namespace Content.Server.Body
             shell.SendText(player, $"No mechanism was found with name {mechanismName}.");
         }
     }
+
+    class HurtCommand : IClientCommand
+    {
+        public string Command => "hurt";
+        public string Description => "Ouch";
+        public string Help => $"Usage: {Command} <type> <amount> (<entity uid/_>) (<ignoreResistance>)";
+
+        private void SendDamageTypes(IConsoleShell shell, IPlayerSession? player)
+        {
+            var msg = "";
+            foreach (var dClass in Enum.GetNames(typeof(DamageClass)))
+            {
+                msg += $"\n{dClass}";
+                var types = Enum.Parse<DamageClass>(dClass).ToTypes();
+                foreach (var dType in types)
+                {
+                    msg += $"\n - {dType}";
+                }
+            }
+            shell.SendText(player, $"Damage Types:{msg}");
+        }
+
+        public void Execute(IConsoleShell shell, IPlayerSession? player, string[] args)
+        {
+            // Check if we have enough for the dmg types to show
+            if (args.Length > 0 && args[0] == "?")
+            {
+                SendDamageTypes(shell, player);
+                return;
+            }
+
+            // Not enough args
+            if (args.Length < 2)
+            {
+                shell.SendText(player, Help);
+                return;
+            }
+
+            var ignoreResistance = false;
+            var entityUid = player != null && player.AttachedEntityUid.HasValue ? player.AttachedEntityUid.Value : EntityUid.Invalid;
+            if (!int.TryParse(args[1], out var amount) ||
+                args.Length >= 3 && args[2] != "_" && !EntityUid.TryParse(args[2], out entityUid) || 
+                args.Length >= 4 && !bool.TryParse(args[3], out ignoreResistance))
+            {
+                shell.SendText(player, Help);
+                return;
+            }
+
+            if (entityUid == EntityUid.Invalid)
+            {
+                shell.SendText(player, "Not a valid entity.");
+                return;
+            }
+
+            if (!IoCManager.Resolve<IEntityManager>().TryGetEntity(entityUid, out var ent))
+            {
+                shell.SendText(player, "Entity couldn't be found.");
+                return;
+            }
+
+            if (!ent.TryGetComponent(out IDamageableComponent? damageable))
+            {
+                shell.SendText(player, "Entity can't be damaged.");
+                return;
+            }
+
+            if (Enum.TryParse<DamageClass>(args[0], true, out var dmgClass))
+            {
+                if (!damageable.ChangeDamage(dmgClass, amount, ignoreResistance))
+                    shell.SendText(player, "Something went wrong!");
+                return;
+            }
+            // Fall back to DamageType
+            else if (Enum.TryParse<DamageType>(args[0], true, out var dmgType))
+            {
+                if (!damageable.ChangeDamage(dmgType, amount, ignoreResistance))
+                    shell.SendText(player, "Something went wrong!");
+                return;
+            }
+            else
+            {
+                SendDamageTypes(shell, player);
+            }
+        }
+    }
 }

Content.Server/Body/BodyPart.cs

@@ -14,13 +14,11 @@ using Content.Shared.Damage.DamageContainer;
 using Content.Shared.Damage.ResistanceSet;
 using Content.Shared.GameObjects.Components.Body;
 using Content.Shared.GameObjects.Components.Damage;
-using Robust.Server.GameObjects;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Interfaces.Reflection;
 using Robust.Shared.Interfaces.Serialization;
 using Robust.Shared.IoC;
 using Robust.Shared.Log;
-using Robust.Shared.Map;
 using Robust.Shared.Maths;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Utility;
@@ -34,20 +32,11 @@ namespace Content.Server.Body
     ///     which coordinates functions between BodyParts, or a
     ///     <see cref="DroppedBodyPartComponent"/>.
     /// </summary>
-    public class BodyPart
+    public class BodyPart : IBodyPart
     {
-        /// <summary>
-        ///     The body that this body part is in, if any.
-        /// </summary>
-        private BodyManagerComponent? _body;
+        private IBodyManagerComponent? _body;
 
-        /// <summary>
-        ///     Set of all <see cref="Mechanism"/> currently inside this
-        ///     <see cref="BodyPart"/>.
-        ///     To add and remove from this list see <see cref="AddMechanism"/> and
-        ///     <see cref="RemoveMechanism"/>
-        /// </summary>
-        private readonly HashSet<Mechanism> _mechanisms = new HashSet<Mechanism>();
+        private readonly HashSet<IMechanism> _mechanisms = new HashSet<IMechanism>();
 
         public BodyPart(BodyPartPrototype data)
         {
@@ -64,11 +53,8 @@ namespace Content.Server.Body
             LoadFromPrototype(data);
         }
 
-        /// <summary>
-        ///     The body that this body part is in, if any.
-        /// </summary>
         [ViewVariables]
-        public BodyManagerComponent? Body
+        public IBodyManagerComponent? Body
         {
             get => _body;
             set
@@ -111,91 +97,48 @@ namespace Content.Server.Body
         [ViewVariables]
         private HashSet<IExposeData> Properties { get; }
 
-        /// <summary>
-        ///     The name of this <see cref="BodyPart"/>, often displayed to the user.
-        ///     For example, it could be named "advanced robotic arm".
-        /// </summary>
-        [ViewVariables]
-        public string Name { get; private set; }
+        [ViewVariables] public string Name { get; private set; }
 
-        /// <summary>
-        ///     Plural version of this <see cref="BodyPart"/> name.
-        /// </summary>
-        [ViewVariables]
-        public string Plural { get; private set; }
+        [ViewVariables] public string Plural { get; private set; }
 
-        /// <summary>
-        ///     Path to the RSI that represents this <see cref="BodyPart"/>.
-        /// </summary>
-        [ViewVariables]
-        public string RSIPath { get; private set; }
+        [ViewVariables] public string RSIPath { get; private set; }
 
-        /// <summary>
-        ///     RSI state that represents this <see cref="BodyPart"/>.
-        /// </summary>
-        [ViewVariables]
-        public string RSIState { get; private set; }
+        [ViewVariables] public string RSIState { get; private set; }
 
-        /// <summary>
-        ///     RSI map keys that this body part changes on the sprite.
-        /// </summary>
-        [ViewVariables]
-        public Enum? RSIMap { get; set; }
+        [ViewVariables] public Enum? RSIMap { get; set; }
 
-        /// <summary>
-        ///     RSI color of this body part.
-        /// </summary>
         // TODO: SpriteComponent rework
-        public Color? RSIColor { get; set; }
+        [ViewVariables] public Color? RSIColor { get; set; }
 
-        /// <summary>
-        ///     <see cref="BodyPartType"/> that this <see cref="BodyPart"/> is considered
-        ///     to be.
-        ///     For example, <see cref="BodyPartType.Arm"/>.
-        /// </summary>
-        [ViewVariables]
-        public BodyPartType PartType { get; private set; }
+        [ViewVariables] public BodyPartType PartType { get; private set; }
 
-        /// <summary>
-        ///     Determines many things: how many mechanisms can be fit inside this
-        ///     <see cref="BodyPart"/>, whether a body can fit through tiny crevices, etc.
-        /// </summary>
-        [ViewVariables]
-        private int Size { get; set; }
+        [ViewVariables] public int Size { get; private set; }
 
-        /// <summary>
-        ///     Max HP of this <see cref="BodyPart"/>.
-        /// </summary>
-        [ViewVariables]
-        public int MaxDurability { get; private set; }
+        [ViewVariables] public int MaxDurability { get; private set; }
 
-        /// <summary>
-        ///     Current HP of this <see cref="BodyPart"/> based on sum of all damage types.
-        /// </summary>
-        [ViewVariables]
-        public int CurrentDurability => MaxDurability - Damage.TotalDamage;
+        [ViewVariables] public int CurrentDurability => MaxDurability - Damage.TotalDamage;
 
         // TODO: Individual body part damage
         /// <summary>
-        ///     Current damage dealt to this <see cref="BodyPart"/>.
+        ///     Current damage dealt to this <see cref="IBodyPart"/>.
         /// </summary>
         [ViewVariables]
         public DamageContainer Damage { get; private set; }
 
         /// <summary>
-        ///     Armor of this <see cref="BodyPart"/> against damages.
+        ///     Armor of this <see cref="IBodyPart"/> against damages.
         /// </summary>
         [ViewVariables]
         public ResistanceSet Resistances { get; private set; }
 
         /// <summary>
-        ///     At what HP this <see cref="BodyPart"/> destroyed.
+        ///     At what HP this <see cref="IBodyPart"/> destroyed.
         /// </summary>
         [ViewVariables]
         public int DestroyThreshold { get; private set; }
 
         /// <summary>
-        ///     What types of BodyParts this <see cref="BodyPart"/> can easily attach to.
+        ///     What types of BodyParts this <see cref="IBodyPart"/> can easily attach to.
         ///     For the most part, most limbs aren't universal and require extra work to
         ///     attach between types.
         /// </summary>
@@ -203,15 +146,23 @@ namespace Content.Server.Body
         public BodyPartCompatibility Compatibility { get; private set; }
 
         /// <summary>
-        ///     Set of all <see cref="Mechanism"/> currently inside this
-        ///     <see cref="BodyPart"/>.
+        ///     Set of all <see cref="IMechanism"/> currently inside this
+        ///     <see cref="IBodyPart"/>.
         /// </summary>
         [ViewVariables]
-        public IReadOnlyCollection<Mechanism> Mechanisms => _mechanisms;
+        public IReadOnlyCollection<IMechanism> Mechanisms => _mechanisms;
 
         /// <summary>
-        ///     This method is called by <see cref="BodyManagerComponent.Update"/>
-        ///     before <see cref="MetabolismComponent.Update"/> is called.
+        /// Represents if body part is vital for creature.
+        /// If the last vital body part is removed creature dies
+        /// </summary>
+        [ViewVariables]
+        public bool IsVital { get; private set; }
+
+        /// <summary>
+        ///     This method is called by
+        ///     <see cref="IBodyManagerComponent.PreMetabolism"/> before
+        ///     <see cref="MetabolismComponent.Update"/> is called.
         /// </summary>
         public void PreMetabolism(float frameTime)
         {
@@ -222,8 +173,9 @@ namespace Content.Server.Body
         }
 
         /// <summary>
-        ///     This method is called by <see cref="BodyManagerComponent.Update"/>
-        ///     after <see cref="MetabolismComponent.Update"/> is called.
+        ///     This method is called by
+        ///     <see cref="IBodyManagerComponent.PostMetabolism"/> after
+        ///     <see cref="MetabolismComponent.Update"/> is called.
         /// </summary>
         public void PostMetabolism(float frameTime)
         {
@@ -258,9 +210,10 @@ namespace Content.Server.Body
         /// <param name="property">The property if found, null otherwise.</param>
         /// <typeparam name="T">The type of the property to find.</typeparam>
         /// <returns>True if successful, false otherwise.</returns>
-        public bool TryGetProperty<T>(out T property)
+        public bool TryGetProperty<T>([NotNullWhen(true)] out T? property) where T : BodyPartProperty
         {
-            property = (T) Properties.First(x => x.GetType() == typeof(T));
+            property = (T?) Properties.FirstOrDefault(x => x.GetType() == typeof(T));
+
             return property != null;
         }
 
@@ -269,20 +222,21 @@ namespace Content.Server.Body
         ///     The resulting <see cref="BodyPartProperty"/> will be null if unsuccessful.
         /// </summary>
         /// <returns>True if successful, false otherwise.</returns>
-        public bool TryGetProperty(Type propertyType, out BodyPartProperty property)
+        public bool TryGetProperty(Type propertyType, [NotNullWhen(true)] out BodyPartProperty? property)
         {
-            property = (BodyPartProperty) Properties.First(x => x.GetType() == propertyType);
+            property = (BodyPartProperty?) Properties.First(x => x.GetType() == propertyType);
+
             return property != null;
         }
 
         /// <summary>
-        ///     Checks if the given type <see cref="T"/> is on this <see cref="BodyPart"/>.
+        ///     Checks if the given type <see cref="T"/> is on this <see cref="IBodyPart"/>.
         /// </summary>
         /// <typeparam name="T">
         ///     The subtype of <see cref="BodyPartProperty"/> to look for.
         /// </typeparam>
         /// <returns>
-        ///     True if this <see cref="BodyPart"/> has a property of type
+        ///     True if this <see cref="IBodyPart"/> has a property of type
         ///     <see cref="T"/>, false otherwise.
         /// </returns>
         public bool HasProperty<T>() where T : BodyPartProperty
@@ -292,13 +246,13 @@ namespace Content.Server.Body
 
         /// <summary>
         ///     Checks if a subtype of <see cref="BodyPartProperty"/> is on this
-        ///     <see cref="BodyPart"/>.
+        ///     <see cref="IBodyPart"/>.
         /// </summary>
         /// <param name="propertyType">
         ///     The subtype of <see cref="BodyPartProperty"/> to look for.
         /// </param>
         /// <returns>
-        ///     True if this <see cref="BodyPart"/> has a property of type
+        ///     True if this <see cref="IBodyPart"/> has a property of type
         ///     <see cref="propertyType"/>, false otherwise.
         /// </returns>
         public bool HasProperty(Type propertyType)
@@ -306,22 +260,12 @@ namespace Content.Server.Body
             return Properties.Count(x => x.GetType() == propertyType) > 0;
         }
 
-        /// <summary>
-        ///     Checks if another <see cref="BodyPart"/> can be connected to this one.
-        /// </summary>
-        /// <param name="toBeConnected">The part to connect.</param>
-        /// <returns>True if it can be connected, false otherwise.</returns>
-        public bool CanAttachBodyPart(BodyPart toBeConnected)
+        public bool CanAttachPart(IBodyPart part)
         {
-            return SurgeryData.CanAttachBodyPart(toBeConnected);
+            return SurgeryData.CanAttachBodyPart(part);
         }
 
-        /// <summary>
-        ///     Checks if a <see cref="Mechanism"/> can be installed on this
-        ///     <see cref="BodyPart"/>.
-        /// </summary>
-        /// <returns>True if it can be installed, false otherwise.</returns>
-        public bool CanInstallMechanism(Mechanism mechanism)
+        public bool CanInstallMechanism(IMechanism mechanism)
         {
             return SizeUsed + mechanism.Size <= Size &&
                    SurgeryData.CanInstallMechanism(mechanism);
@@ -336,9 +280,9 @@ namespace Content.Server.Body
         /// <param name="mechanism">The mechanism to try to install.</param>
         /// <returns>
         ///     True if successful, false if there was an error
-        ///     (e.g. not enough room in <see cref="BodyPart"/>).
+        ///     (e.g. not enough room in <see cref="IBodyPart"/>).
         /// </returns>
-        private bool TryInstallMechanism(Mechanism mechanism)
+        private bool TryInstallMechanism(IMechanism mechanism)
         {
             if (!CanInstallMechanism(mechanism))
             {
@@ -352,7 +296,7 @@ namespace Content.Server.Body
 
         /// <summary>
         ///     Tries to install a <see cref="DroppedMechanismComponent"/> into this
-        ///     <see cref="BodyPart"/>, potentially deleting the dropped
+        ///     <see cref="IBodyPart"/>, potentially deleting the dropped
         ///     <see cref="IEntity"/>.
         /// </summary>
         /// <param name="droppedMechanism">The mechanism to install.</param>
@@ -364,22 +308,14 @@ namespace Content.Server.Body
         {
             if (!TryInstallMechanism(droppedMechanism.ContainedMechanism))
             {
-                return false; //Installing the mechanism failed for some reason.
+                return false; // Installing the mechanism failed for some reason.
             }
 
             droppedMechanism.Owner.Delete();
             return true;
         }
 
-        /// <summary>
-        ///     Tries to remove the given <see cref="Mechanism"/> reference from
-        ///     this <see cref="BodyPart"/>.
-        /// </summary>
-        /// <returns>
-        ///     The newly spawned <see cref="DroppedMechanismComponent"/>, or null
-        ///     if there was an error in spawning the entity or removing the mechanism.
-        /// </returns>
-        public bool TryDropMechanism(IEntity dropLocation, Mechanism mechanismTarget,
+        public bool TryDropMechanism(IEntity dropLocation, IMechanism mechanismTarget,
             [NotNullWhen(true)] out DroppedMechanismComponent dropped)
         {
             dropped = null!;
@@ -402,16 +338,16 @@ namespace Content.Server.Body
         }
 
         /// <summary>
-        ///     Tries to destroy the given <see cref="Mechanism"/> in this
-        ///     <see cref="BodyPart"/>. Does NOT spawn a dropped entity.
+        ///     Tries to destroy the given <see cref="IMechanism"/> in this
+        ///     <see cref="IBodyPart"/>. Does NOT spawn a dropped entity.
         /// </summary>
         /// <summary>
-        ///     Tries to destroy the given <see cref="Mechanism"/> in this
-        ///     <see cref="BodyPart"/>.
+        ///     Tries to destroy the given <see cref="IMechanism"/> in this
+        ///     <see cref="IBodyPart"/>.
         /// </summary>
         /// <param name="mechanismTarget">The mechanism to destroy.</param>
         /// <returns>True if successful, false otherwise.</returns>
-        public bool DestroyMechanism(Mechanism mechanismTarget)
+        public bool DestroyMechanism(IMechanism mechanismTarget)
         {
             if (!RemoveMechanism(mechanismTarget))
             {
@@ -421,18 +357,13 @@ namespace Content.Server.Body
             return true;
         }
 
-        /// <summary>
-        ///     Checks if the given <see cref="SurgeryType"/> can be used on
-        ///     the current state of this <see cref="BodyPart"/>.
-        /// </summary>
-        /// <returns>True if it can be used, false otherwise.</returns>
-        public bool SurgeryCheck(SurgeryType toolType)
+        public bool SurgeryCheck(SurgeryType surgery)
         {
-            return SurgeryData.CheckSurgery(toolType);
+            return SurgeryData.CheckSurgery(surgery);
         }
 
         /// <summary>
-        ///     Attempts to perform surgery on this <see cref="BodyPart"/> with the given
+        ///     Attempts to perform surgery on this <see cref="IBodyPart"/> with the given
         ///     tool.
         /// </summary>
         /// <returns>True if successful, false if there was an error.</returns>
@@ -441,7 +372,7 @@ namespace Content.Server.Body
             return SurgeryData.PerformSurgery(toolType, target, surgeon, performer);
         }
 
-        private void AddMechanism(Mechanism mechanism)
+        private void AddMechanism(IMechanism mechanism)
         {
             DebugTools.AssertNotNull(mechanism);
 
@@ -474,11 +405,11 @@ namespace Content.Server.Body
 
         /// <summary>
         ///     Tries to remove the given <see cref="mechanism"/> from this
-        ///     <see cref="BodyPart"/>.
+        ///     <see cref="IBodyPart"/>.
         /// </summary>
         /// <param name="mechanism">The mechanism to remove.</param>
         /// <returns>True if it was removed, false otherwise.</returns>
-        private bool RemoveMechanism(Mechanism mechanism)
+        private bool RemoveMechanism(IMechanism mechanism)
         {
             DebugTools.AssertNotNull(mechanism);
 
@@ -515,7 +446,7 @@ namespace Content.Server.Body
 
         /// <summary>
         ///     Loads the given <see cref="BodyPartPrototype"/>.
-        ///     Current data on this <see cref="BodyPart"/> will be overwritten!
+        ///     Current data on this <see cref="IBodyPart"/> will be overwritten!
         /// </summary>
         protected virtual void LoadFromPrototype(BodyPartPrototype data)
         {
@@ -527,6 +458,7 @@ namespace Content.Server.Body
             RSIPath = data.RSIPath;
             RSIState = data.RSIState;
             MaxDurability = data.Durability;
+            IsVital = data.IsVital;
 
             if (!prototypeManager.TryIndex(data.DamageContainerPresetId,
                 out DamageContainerPrototype damageContainerData))

Content.Server/Body/BodyPreset.cs

@@ -21,7 +21,7 @@ namespace Content.Server.Body
         [ViewVariables] public string Name { get; private set; }
 
         /// <summary>
-        ///     Maps a template slot to the ID of the <see cref="BodyPart"/> that should
+        ///     Maps a template slot to the ID of the <see cref="IBodyPart"/> that should
         ///     fill it. E.g. "right arm" : "BodyPart.arm.basic_human".
         /// </summary>
         [ViewVariables]

Content.Server/Body/IBodyPart.cs

@@ -0,0 +1,136 @@
+#nullable enable
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using Content.Server.Body.Mechanisms;
+using Content.Server.GameObjects.Components.Body;
+using Content.Shared.Body.Part.Properties;
+using Content.Shared.GameObjects.Components.Body;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Maths;
+
+namespace Content.Server.Body
+{
+    public interface IBodyPart
+    {
+        /// <summary>
+        ///     The body that this body part is currently in, if any.
+        /// </summary>
+        IBodyManagerComponent? Body { get; set; }
+
+        /// <summary>
+        ///     <see cref="BodyPartType"/> that this <see cref="IBodyPart"/> is considered
+        ///     to be.
+        ///     For example, <see cref="BodyPartType.Arm"/>.
+        /// </summary>
+        BodyPartType PartType { get; }
+
+        /// <summary>
+        ///     The name of this <see cref="IBodyPart"/>, often displayed to the user.
+        ///     For example, it could be named "advanced robotic arm".
+        /// </summary>
+        public string Name { get; }
+
+        /// <summary>
+        ///     Plural version of this <see cref="IBodyPart"/> name.
+        /// </summary>
+        public string Plural { get; }
+
+        /// <summary>
+        ///     Determines many things: how many mechanisms can be fit inside this
+        ///     <see cref="IBodyPart"/>, whether a body can fit through tiny crevices,
+        ///     etc.
+        /// </summary>
+        int Size { get; }
+
+        /// <summary>
+        ///     Max HP of this <see cref="IBodyPart"/>.
+        /// </summary>
+        int MaxDurability { get; }
+
+        /// <summary>
+        ///     Current HP of this <see cref="IBodyPart"/> based on sum of all damage types.
+        /// </summary>
+        int CurrentDurability { get; }
+
+        /// <summary>
+        ///     Collection of all <see cref="IMechanism"/>s currently inside this
+        ///     <see cref="IBodyPart"/>.
+        ///     To add and remove from this list see <see cref="AddMechanism"/> and
+        ///     <see cref="RemoveMechanism"/>
+        /// </summary>
+        IReadOnlyCollection<IMechanism> Mechanisms { get; }
+
+        /// <summary>
+        ///     Path to the RSI that represents this <see cref="IBodyPart"/>.
+        /// </summary>
+        public string RSIPath { get; }
+
+        /// <summary>
+        ///     RSI state that represents this <see cref="IBodyPart"/>.
+        /// </summary>
+        public string RSIState { get; }
+
+        /// <summary>
+        ///     RSI map keys that this body part changes on the sprite.
+        /// </summary>
+        public Enum? RSIMap { get; set; }
+
+        /// <summary>
+        ///     RSI color of this body part.
+        /// </summary>
+        // TODO: SpriteComponent rework
+        public Color? RSIColor { get; set; }
+
+        /// <summary>
+        /// If body part is vital
+        /// </summary>
+        public bool IsVital { get; }
+
+        bool HasProperty<T>() where T : BodyPartProperty;
+
+        bool HasProperty(Type type);
+
+        bool TryGetProperty<T>([NotNullWhen(true)] out T? property) where T : BodyPartProperty;
+
+        void PreMetabolism(float frameTime);
+
+        void PostMetabolism(float frameTime);
+
+        bool SpawnDropped([NotNullWhen(true)] out IEntity? dropped);
+
+        /// <summary>
+        ///     Checks if the given <see cref="SurgeryType"/> can be used on
+        ///     the current state of this <see cref="IBodyPart"/>.
+        /// </summary>
+        /// <returns>True if it can be used, false otherwise.</returns>
+        bool SurgeryCheck(SurgeryType surgery);
+
+        /// <summary>
+        ///     Checks if another <see cref="IBodyPart"/> can be connected to this one.
+        /// </summary>
+        /// <param name="part">The part to connect.</param>
+        /// <returns>True if it can be connected, false otherwise.</returns>
+        bool CanAttachPart(IBodyPart part);
+
+        /// <summary>
+        ///     Checks if a <see cref="IMechanism"/> can be installed on this
+        ///     <see cref="IBodyPart"/>.
+        /// </summary>
+        /// <returns>True if it can be installed, false otherwise.</returns>
+        bool CanInstallMechanism(IMechanism mechanism);
+
+        /// <summary>
+        ///     Tries to remove the given <see cref="IMechanism"/> reference from
+        ///     this <see cref="IBodyPart"/>.
+        /// </summary>
+        /// <returns>
+        ///     The newly spawned <see cref="DroppedMechanismComponent"/>, or null
+        ///     if there was an error in spawning the entity or removing the mechanism.
+        /// </returns>
+        bool TryDropMechanism(IEntity dropLocation, IMechanism mechanismTarget,
+            [NotNullWhen(true)] out DroppedMechanismComponent dropped);
+
+        bool DestroyMechanism(IMechanism mechanism);
+    }
+}

Content.Server/Body/IBodyPartContainer.cs

@@ -7,11 +7,11 @@ namespace Content.Server.Body
     ///     Making a class inherit from this interface allows you to do many things with
     ///     it in the <see cref="SurgeryData"/> class.
     ///     This includes passing it as an argument to a
-    ///     <see cref="SurgeryData.SurgeryAction"/> delegate, as to later typecast it back
-    ///     to the original class type.
-    ///     Every BodyPart also needs an <see cref="IBodyPartContainer"/> to be its parent
-    ///     (i.e. the <see cref="BodyManagerComponent"/> holds many <see cref="BodyPart"/>,
-    ///     each of which have an upward reference to it).
+    ///     <see cref="SurgeryData.SurgeryAction"/> delegate, as to later typecast
+    ///     it back to the original class type.
+    ///     Every BodyPart also needs an <see cref="IBodyPartContainer"/> to be
+    ///     its parent (i.e. the <see cref="BodyManagerComponent"/> holds many
+    ///     <see cref="IBodyPart"/>, each of which have an upward reference to it).
     /// </summary>
     public interface IBodyPartContainer
     {

Content.Server/Body/Mechanisms/Behaviors/MechanismBehavior.cs

@@ -70,7 +70,7 @@ namespace Content.Server.Body.Mechanisms.Behaviors
         }
 
         /// <summary>
-        ///     Called when the containing <see cref="BodyPart"/> is attached to a
+        ///     Called when the containing <see cref="IBodyPart"/> is attached to a
         ///     <see cref="BodyManagerComponent"/>.
         ///     For instance, attaching a head to a body will call this on the brain inside.
         /// </summary>
@@ -82,7 +82,7 @@ namespace Content.Server.Body.Mechanisms.Behaviors
 
         /// <summary>
         ///     Called when the parent <see cref="Mechanisms.Mechanism"/> is
-        ///     installed into a <see cref="BodyPart"/>.
+        ///     installed into a <see cref="IBodyPart"/>.
         ///     For instance, putting a brain into an empty head.
         /// </summary>
         public void InstalledIntoPart()
@@ -92,22 +92,22 @@ namespace Content.Server.Body.Mechanisms.Behaviors
         }
 
         /// <summary>
-        ///     Called when the containing <see cref="BodyPart"/> is removed from a
+        ///     Called when the containing <see cref="IBodyPart"/> is removed from a
         ///     <see cref="BodyManagerComponent"/>.
         ///     For instance, cutting off ones head will call this on the brain inside.
         /// </summary>
-        public void RemovedFromBody(BodyManagerComponent old)
+        public void RemovedFromBody(IBodyManagerComponent old)
         {
             OnRemovedFromBody(old);
             TryRemoveNetwork(old);
         }
 
         /// <summary>
-        ///     Called when the parent <see cref="Mechanisms.Mechanism"/> is removed from a
-        ///     <see cref="BodyPart"/>.
+        ///     Called when the parent <see cref="Mechanisms.Mechanism"/> is
+        ///     removed from a <see cref="IBodyPart"/>.
         ///     For instance, taking a brain out of ones head.
         /// </summary>
-        public void RemovedFromPart(BodyPart old)
+        public void RemovedFromPart(IBodyPart old)
         {
             OnRemovedFromPart(old);
             TryRemoveNetwork(old.Body);
@@ -121,7 +121,7 @@ namespace Content.Server.Body.Mechanisms.Behaviors
             }
         }
 
-        private void TryRemoveNetwork(BodyManagerComponent? body)
+        private void TryRemoveNetwork(IBodyManagerComponent? body)
         {
             if (Network != null)
             {
@@ -137,7 +137,7 @@ namespace Content.Server.Body.Mechanisms.Behaviors
         protected virtual void OnRemove() { }
 
         /// <summary>
-        ///     Called when the containing <see cref="BodyPart"/> is attached to a
+        ///     Called when the containing <see cref="IBodyPart"/> is attached to a
         ///     <see cref="BodyManagerComponent"/>.
         ///     For instance, attaching a head to a body will call this on the brain inside.
         /// </summary>
@@ -145,24 +145,24 @@ namespace Content.Server.Body.Mechanisms.Behaviors
 
         /// <summary>
         ///     Called when the parent <see cref="Mechanisms.Mechanism"/> is
-        ///     installed into a <see cref="BodyPart"/>.
+        ///     installed into a <see cref="IBodyPart"/>.
         ///     For instance, putting a brain into an empty head.
         /// </summary>
         protected virtual void OnInstalledIntoPart() { }
 
         /// <summary>
-        ///     Called when the containing <see cref="BodyPart"/> is removed from a
+        ///     Called when the containing <see cref="IBodyPart"/> is removed from a
         ///     <see cref="BodyManagerComponent"/>.
         ///     For instance, cutting off ones head will call this on the brain inside.
         /// </summary>
-        protected virtual void OnRemovedFromBody(BodyManagerComponent old) { }
+        protected virtual void OnRemovedFromBody(IBodyManagerComponent old) { }
 
         /// <summary>
-        ///     Called when the parent <see cref="Mechanisms.Mechanism"/> is removed from a
-        ///     <see cref="BodyPart"/>.
+        ///     Called when the parent <see cref="Mechanisms.Mechanism"/> is
+        ///     removed from a <see cref="IBodyPart"/>.
         ///     For instance, taking a brain out of ones head.
         /// </summary>
-        protected virtual void OnRemovedFromPart(BodyPart old) { }
+        protected virtual void OnRemovedFromPart(IBodyPart old) { }
 
         /// <summary>
         ///     Called every update when this behavior is connected to a

Content.Server/Body/Mechanisms/IMechanism.cs

@@ -0,0 +1,103 @@
+#nullable enable
+using System.Collections.Generic;
+using Content.Server.Body.Mechanisms.Behaviors;
+using Content.Server.GameObjects.Components.Body;
+using Content.Shared.GameObjects.Components.Body;
+
+namespace Content.Server.Body.Mechanisms
+{
+    public interface IMechanism
+    {
+        string Id { get; }
+
+        string Name { get; set; }
+
+        /// <summary>
+        ///     Professional description of the <see cref="IMechanism"/>.
+        /// </summary>
+        string Description { get; set; }
+
+        /// <summary>
+        ///     The message to display upon examining a mob with this Mechanism installed.
+        ///     If the string is empty (""), no message will be displayed.
+        /// </summary>
+        string ExamineMessage { get; set; }
+
+        // TODO: Make RSI properties sane
+        /// <summary>
+        ///     Path to the RSI that represents this <see cref="IMechanism"/>.
+        /// </summary>
+        string RSIPath { get; set; }
+
+        /// <summary>
+        ///     RSI state that represents this <see cref="IMechanism"/>.
+        /// </summary>
+        string RSIState { get; set; }
+
+        /// <summary>
+        ///     Max HP of this <see cref="IMechanism"/>.
+        /// </summary>
+        int MaxDurability { get; set; }
+
+        /// <summary>
+        ///     Current HP of this <see cref="IMechanism"/>.
+        /// </summary>
+        int CurrentDurability { get; set; }
+
+        /// <summary>
+        ///     At what HP this <see cref="IMechanism"/> is completely destroyed.
+        /// </summary>
+        int DestroyThreshold { get; set; }
+
+        /// <summary>
+        ///     Armor of this <see cref="IMechanism"/> against attacks.
+        /// </summary>
+        int Resistance { get; set; }
+
+        /// <summary>
+        ///     Determines a handful of things - mostly whether this
+        ///     <see cref="IMechanism"/> can fit into a <see cref="IBodyPart"/>.
+        /// </summary>
+        // TODO: OnSizeChanged
+        int Size { get; set; }
+
+        /// <summary>
+        ///     What kind of <see cref="IBodyPart"/> this <see cref="IMechanism"/> can be
+        ///     easily installed into.
+        /// </summary>
+        BodyPartCompatibility Compatibility { get; set; }
+
+        IReadOnlyList<MechanismBehavior> Behaviors { get; }
+
+        IBodyManagerComponent? Body { get; }
+
+        IBodyPart? Part { get; set; }
+
+        void EnsureInitialize();
+
+        void InstalledIntoBody();
+
+        void RemovedFromBody(IBodyManagerComponent old);
+
+        /// <summary>
+        ///     This method is called by <see cref="IBodyPart.PreMetabolism"/> before
+        ///     <see cref="MetabolismComponent.Update"/> is called.
+        /// </summary>
+        void PreMetabolism(float frameTime);
+
+        /// <summary>
+        ///     This method is called by <see cref="IBodyPart.PostMetabolism"/> after
+        ///     <see cref="MetabolismComponent.Update"/> is called.
+        /// </summary>
+        void PostMetabolism(float frameTime);
+
+        void AddBehavior(MechanismBehavior behavior);
+
+        /// <summary>
+        ///     Removes a behavior from this mechanism.
+        /// </summary>
+        /// <param name="behavior">The behavior to remove.</param>
+        /// <returns>True if it was removed, false otherwise.</returns>
+        bool RemoveBehavior(MechanismBehavior behavior);
+    }
+}

Content.Server/Body/Mechanisms/Mechanism.cs

@@ -12,13 +12,13 @@ using Robust.Shared.ViewVariables;
 namespace Content.Server.Body.Mechanisms
 {
     /// <summary>
-    ///     Data class representing a persistent item inside a <see cref="BodyPart"/>.
+    ///     Data class representing a persistent item inside a <see cref="IBodyPart"/>.
     ///     This includes livers, eyes, cameras, brains, explosive implants,
     ///     binary communicators, and other things.
     /// </summary>
-    public class Mechanism
+    public class Mechanism : IMechanism
     {
-        private BodyPart? _part;
+        private IBodyPart? _part;
 
         public Mechanism(MechanismPrototype data)
         {
@@ -29,7 +29,7 @@ namespace Content.Server.Body.Mechanisms
             ExamineMessage = null!;
             RSIPath = null!;
             RSIState = null!;
-            Behaviors = new List<MechanismBehavior>();
+            _behaviors = new List<MechanismBehavior>();
         }
 
         [ViewVariables] private bool Initialized { get; set; }
@@ -40,78 +40,33 @@ namespace Content.Server.Body.Mechanisms
 
         [ViewVariables] public string Name { get; set; }
 
-        /// <summary>
-        ///     Professional description of the <see cref="Mechanism"/>.
-        /// </summary>
-        [ViewVariables]
-        public string Description { get; set; }
+        [ViewVariables] public string Description { get; set; }
 
-        /// <summary>
-        ///     The message to display upon examining a mob with this Mechanism installed.
-        ///     If the string is empty (""), no message will be displayed.
-        /// </summary>
-        [ViewVariables]
-        public string ExamineMessage { get; set; }
+        [ViewVariables] public string ExamineMessage { get; set; }
 
-        /// <summary>
-        ///     Path to the RSI that represents this <see cref="Mechanism"/>.
-        /// </summary>
-        [ViewVariables]
-        public string RSIPath { get; set; }
+        [ViewVariables] public string RSIPath { get; set; }
 
-        /// <summary>
-        ///     RSI state that represents this <see cref="Mechanism"/>.
-        /// </summary>
-        [ViewVariables]
-        public string RSIState { get; set; }
+        [ViewVariables] public string RSIState { get; set; }
 
-        /// <summary>
-        ///     Max HP of this <see cref="Mechanism"/>.
-        /// </summary>
-        [ViewVariables]
-        public int MaxDurability { get; set; }
+        [ViewVariables] public int MaxDurability { get; set; }
 
-        /// <summary>
-        ///     Current HP of this <see cref="Mechanism"/>.
-        /// </summary>
-        [ViewVariables]
-        public int CurrentDurability { get; set; }
+        [ViewVariables] public int CurrentDurability { get; set; }
 
-        /// <summary>
-        ///     At what HP this <see cref="Mechanism"/> is completely destroyed.
-        /// </summary>
-        [ViewVariables]
-        public int DestroyThreshold { get; set; }
+        [ViewVariables] public int DestroyThreshold { get; set; }
 
-        /// <summary>
-        ///     Armor of this <see cref="Mechanism"/> against attacks.
-        /// </summary>
-        [ViewVariables]
-        public int Resistance { get; set; }
+        [ViewVariables] public int Resistance { get; set; }
 
-        /// <summary>
-        ///     Determines a handful of things - mostly whether this
-        ///     <see cref="Mechanism"/> can fit into a <see cref="BodyPart"/>.
-        /// </summary>
-        [ViewVariables]
-        public int Size { get; set; }
+        [ViewVariables] public int Size { get; set; }
 
-        /// <summary>
-        ///     What kind of <see cref="BodyPart"/> this <see cref="Mechanism"/> can be
-        ///     easily installed into.
-        /// </summary>
-        [ViewVariables]
-        public BodyPartCompatibility Compatibility { get; set; }
+        [ViewVariables] public BodyPartCompatibility Compatibility { get; set; }
 
-        /// <summary>
-        ///     The behaviors that this <see cref="Mechanism"/> performs.
-        /// </summary>
-        [ViewVariables]
-        private List<MechanismBehavior> Behaviors { get; }
+        private readonly List<MechanismBehavior> _behaviors;
 
-        public BodyManagerComponent? Body => Part?.Body;
+        [ViewVariables] public IReadOnlyList<MechanismBehavior> Behaviors => _behaviors;
 
-        public BodyPart? Part
+        public IBodyManagerComponent? Body => Part?.Body;
+
+        public IBodyPart? Part
         {
             get => _part;
             set
@@ -167,7 +122,7 @@ namespace Content.Server.Body.Mechanisms
             Size = data.Size;
             Compatibility = data.Compatibility;
 
-            foreach (var behavior in Behaviors.ToArray())
+            foreach (var behavior in _behaviors.ToArray())
             {
                 RemoveBehavior(behavior);
             }
@@ -202,7 +157,7 @@ namespace Content.Server.Body.Mechanisms
             }
         }
 
-        public void RemovedFromBody(BodyManagerComponent old)
+        public void RemovedFromBody(IBodyManagerComponent old)
         {
             foreach (var behavior in Behaviors)
             {
@@ -210,10 +165,6 @@ namespace Content.Server.Body.Mechanisms
             }
         }
 
-        /// <summary>
-        ///     This method is called by <see cref="BodyPart.PreMetabolism"/> before
-        ///     <see cref="MetabolismComponent.Update"/> is called.
-        /// </summary>
         public void PreMetabolism(float frameTime)
         {
             foreach (var behavior in Behaviors)
@@ -222,10 +173,6 @@ namespace Content.Server.Body.Mechanisms
             }
         }
 
-        /// <summary>
-        ///     This method is called by <see cref="BodyPart.PostMetabolism"/> after
-        ///     <see cref="MetabolismComponent.Update"/> is called.
-        /// </summary>
         public void PostMetabolism(float frameTime)
         {
             foreach (var behavior in Behaviors)
@@ -234,16 +181,21 @@ namespace Content.Server.Body.Mechanisms
             }
         }
 
-        private void AddBehavior(MechanismBehavior behavior)
+        public void AddBehavior(MechanismBehavior behavior)
         {
-            Behaviors.Add(behavior);
+            _behaviors.Add(behavior);
             behavior.Initialize(this);
         }
 
-        private bool RemoveBehavior(MechanismBehavior behavior)
+        public bool RemoveBehavior(MechanismBehavior behavior)
         {
-            behavior.Remove();
-            return Behaviors.Remove(behavior);
+            if (_behaviors.Remove(behavior))
+            {
+                behavior.Remove();
+                return true;
+            }
+
+            return false;
         }
     }
 }

Content.Server/Body/Surgery/BiologicalSurgeryData.cs

@@ -17,13 +17,13 @@ namespace Content.Server.Body.Surgery
     [UsedImplicitly]
     public class BiologicalSurgeryData : SurgeryData
     {
-        private readonly List<Mechanism> _disconnectedOrgans = new List<Mechanism>();
+        private readonly List<IMechanism> _disconnectedOrgans = new List<IMechanism>();
 
         private bool _skinOpened;
         private bool _skinRetracted;
         private bool _vesselsClamped;
 
-        public BiologicalSurgeryData(BodyPart parent) : base(parent) { }
+        public BiologicalSurgeryData(IBodyPart parent) : base(parent) { }
 
         protected override SurgeryAction? GetSurgeryStep(SurgeryType toolType)
         {
@@ -118,12 +118,12 @@ namespace Content.Server.Body.Surgery
             return toReturn;
         }
 
-        public override bool CanInstallMechanism(Mechanism mechanism)
+        public override bool CanInstallMechanism(IMechanism mechanism)
         {
             return _skinOpened && _vesselsClamped && _skinRetracted;
         }
 
-        public override bool CanAttachBodyPart(BodyPart part)
+        public override bool CanAttachBodyPart(IBodyPart part)
         {
             return true;
             // TODO: if a bodypart is disconnected, you should have to do some surgery to allow another bodypart to be attached.
@@ -131,7 +131,7 @@ namespace Content.Server.Body.Surgery
 
         private void OpenSkinSurgery(IBodyPartContainer container, ISurgeon surgeon, IEntity performer)
         {
-            performer.PopupMessage(performer, Loc.GetString("Cut open the skin..."));
+            performer.PopupMessage(Loc.GetString("Cut open the skin..."));
 
             // TODO do_after: Delay
             _skinOpened = true;
@@ -139,7 +139,7 @@ namespace Content.Server.Body.Surgery
 
         private void ClampVesselsSurgery(IBodyPartContainer container, ISurgeon surgeon, IEntity performer)
         {
-            performer.PopupMessage(performer, Loc.GetString("Clamp the vessels..."));
+            performer.PopupMessage(Loc.GetString("Clamp the vessels..."));
 
             // TODO do_after: Delay
             _vesselsClamped = true;
@@ -147,7 +147,7 @@ namespace Content.Server.Body.Surgery
 
         private void RetractSkinSurgery(IBodyPartContainer container, ISurgeon surgeon, IEntity performer)
         {
-            performer.PopupMessage(performer, Loc.GetString("Retract the skin..."));
+            performer.PopupMessage(Loc.GetString("Retract the skin..."));
 
             // TODO do_after: Delay
             _skinRetracted = true;
@@ -155,7 +155,7 @@ namespace Content.Server.Body.Surgery
 
         private void CauterizeIncisionSurgery(IBodyPartContainer container, ISurgeon surgeon, IEntity performer)
         {
-            performer.PopupMessage(performer, Loc.GetString("Cauterize the incision..."));
+            performer.PopupMessage(Loc.GetString("Cauterize the incision..."));
 
             // TODO do_after: Delay
             _skinOpened = false;
@@ -170,7 +170,7 @@ namespace Content.Server.Body.Surgery
                 return;
             }
 
-            var toSend = new List<Mechanism>();
+            var toSend = new List<IMechanism>();
             foreach (var mechanism in Parent.Mechanisms)
             {
                 if (!_disconnectedOrgans.Contains(mechanism))
@@ -185,7 +185,7 @@ namespace Content.Server.Body.Surgery
             }
         }
 
-        private void LoosenOrganSurgeryCallback(Mechanism target, IBodyPartContainer container, ISurgeon surgeon,
+        private void LoosenOrganSurgeryCallback(IMechanism target, IBodyPartContainer container, ISurgeon surgeon,
             IEntity performer)
         {
             if (target == null || !Parent.Mechanisms.Contains(target))
@@ -193,7 +193,7 @@ namespace Content.Server.Body.Surgery
                 return;
             }
 
-            performer.PopupMessage(performer, Loc.GetString("Loosen the organ..."));
+            performer.PopupMessage(Loc.GetString("Loosen the organ..."));
 
             // TODO do_after: Delay
             _disconnectedOrgans.Add(target);
@@ -216,8 +216,7 @@ namespace Content.Server.Body.Surgery
             }
         }
 
-        private void RemoveOrganSurgeryCallback(Mechanism target, IBodyPartContainer container,
-            ISurgeon surgeon,
+        private void RemoveOrganSurgeryCallback(IMechanism target, IBodyPartContainer container, ISurgeon surgeon,
             IEntity performer)
         {
             if (target == null || !Parent.Mechanisms.Contains(target))
@@ -225,7 +224,7 @@ namespace Content.Server.Body.Surgery
                 return;
             }
 
-            performer.PopupMessage(performer, Loc.GetString("Remove the organ..."));
+            performer.PopupMessage(Loc.GetString("Remove the organ..."));
 
             // TODO do_after: Delay
             Parent.TryDropMechanism(performer, target, out _);
@@ -241,7 +240,7 @@ namespace Content.Server.Body.Surgery
             }
 
             var bmTarget = (BodyManagerComponent) container;
-            performer.PopupMessage(performer, Loc.GetString("Saw off the limb!"));
+            performer.PopupMessage(Loc.GetString("Saw off the limb!"));
 
             // TODO do_after: Delay
             bmTarget.DisconnectBodyPart(Parent, true);

Content.Server/Body/Surgery/ISurgeon.cs

@@ -13,7 +13,7 @@ namespace Content.Server.Body.Surgery
     public interface ISurgeon
     {
         public delegate void MechanismRequestCallback(
-            Mechanism target,
+            IMechanism target,
             IBodyPartContainer container,
             ISurgeon surgeon,
             IEntity performer);
@@ -29,6 +29,6 @@ namespace Content.Server.Body.Surgery
         ///     This function is called in that scenario, and it is expected that you call the callback with one mechanism from the
         ///     provided list.
         /// </summary>
-        public void RequestMechanism(IEnumerable<Mechanism> options, MechanismRequestCallback callback);
+        public void RequestMechanism(IEnumerable<IMechanism> options, MechanismRequestCallback callback);
     }
 }

Content.Server/Body/Surgery/SurgeryData.cs

@@ -6,7 +6,7 @@ using Robust.Shared.Interfaces.GameObjects;
 namespace Content.Server.Body.Surgery
 {
     /// <summary>
-    ///     This data class represents the state of a <see cref="BodyPart"/> in regards to everything surgery related -
+    ///     This data class represents the state of a <see cref="IBodyPart"/> in regards to everything surgery related -
     ///     whether there's an incision on it, whether the bone is broken, etc.
     /// </summary>
     public abstract class SurgeryData
@@ -14,40 +14,40 @@ namespace Content.Server.Body.Surgery
         protected delegate void SurgeryAction(IBodyPartContainer container, ISurgeon surgeon, IEntity performer);
 
         /// <summary>
-        ///     The <see cref="BodyPart"/> this surgeryData is attached to.
+        ///     The <see cref="IBodyPart"/> this surgeryData is attached to.
         ///     The <see cref="SurgeryData"/> class should not exist without a
-        ///     <see cref="BodyPart"/> that it represents, and will throw errors if it
+        ///     <see cref="IBodyPart"/> that it represents, and will throw errors if it
         ///     is null.
         /// </summary>
-        protected readonly BodyPart Parent;
+        protected readonly IBodyPart Parent;
 
-        protected SurgeryData(BodyPart parent)
+        protected SurgeryData(IBodyPart parent)
         {
             Parent = parent;
         }
 
         /// <summary>
-        ///     The <see cref="BodyPartType"/> of the parent <see cref="BodyPart"/>.
+        ///     The <see cref="BodyPartType"/> of the parent <see cref="IBodyPart"/>.
         /// </summary>
         protected BodyPartType ParentType => Parent.PartType;
 
         /// <summary>
-        ///     Returns the description of this current <see cref="BodyPart"/> to be shown
+        ///     Returns the description of this current <see cref="IBodyPart"/> to be shown
         ///     upon observing the given entity.
         /// </summary>
         public abstract string GetDescription(IEntity target);
 
         /// <summary>
-        ///     Returns whether a <see cref="Mechanism"/> can be installed into the
-        ///     <see cref="BodyPart"/> this <see cref="SurgeryData"/> represents.
+        ///     Returns whether a <see cref="IMechanism"/> can be installed into the
+        ///     <see cref="IBodyPart"/> this <see cref="SurgeryData"/> represents.
         /// </summary>
-        public abstract bool CanInstallMechanism(Mechanism mechanism);
+        public abstract bool CanInstallMechanism(IMechanism mechanism);
 
         /// <summary>
-        ///     Returns whether the given <see cref="BodyPart"/> can be connected to the
-        ///     <see cref="BodyPart"/> this <see cref="SurgeryData"/> represents.
+        ///     Returns whether the given <see cref="IBodyPart"/> can be connected to the
+        ///     <see cref="IBodyPart"/> this <see cref="SurgeryData"/> represents.
         /// </summary>
-        public abstract bool CanAttachBodyPart(BodyPart part);
+        public abstract bool CanAttachBodyPart(IBodyPart part);
 
         /// <summary>
         ///     Gets the delegate corresponding to the surgery step using the given

Content.Server/Chat/ChatCommands.cs

@@ -7,7 +7,9 @@ using Content.Server.Interfaces.Chat;
 using Content.Server.Interfaces.GameObjects;
 using Content.Server.Observer;
 using Content.Server.Players;
+using Content.Server.Utility;
 using Content.Shared.GameObjects.Components.Damage;
+using Content.Shared.Interfaces;
 using Robust.Server.Interfaces.Console;
 using Robust.Server.Interfaces.Player;
 using Robust.Shared.Enums;
@@ -116,6 +118,8 @@ namespace Content.Server.Chat
 
     internal class SuicideCommand : IClientCommand
     {
+        [Dependency] private readonly IPlayerManager _playerManager = default!;
+
         public string Command => "suicide";
 
         public string Description => "Commits suicide";
@@ -133,12 +137,15 @@ namespace Content.Server.Chat
                 damageableComponent.ChangeDamage(kind switch
                     {
                         SuicideKind.Blunt => DamageType.Blunt,
+                        SuicideKind.Slash => DamageType.Slash,
                         SuicideKind.Piercing => DamageType.Piercing,
                         SuicideKind.Heat => DamageType.Heat,
-                        SuicideKind.Disintegration => DamageType.Disintegration,
-                        SuicideKind.Cellular => DamageType.Cellular,
-                        SuicideKind.DNA => DamageType.DNA,
+                        SuicideKind.Shock => DamageType.Shock,
+                        SuicideKind.Cold => DamageType.Cold,
+                        SuicideKind.Poison => DamageType.Poison,
+                        SuicideKind.Radiation => DamageType.Radiation,
                         SuicideKind.Asphyxiation => DamageType.Asphyxiation,
+                        SuicideKind.Bloodloss => DamageType.Bloodloss,
                         _ => DamageType.Blunt
                     },
                 500,
@@ -185,8 +192,14 @@ namespace Content.Server.Chat
                     }
                 }
             }
+
             // Default suicide, bite your tongue
-            chat.EntityMe(owner, Loc.GetString("is attempting to bite {0:their} own tongue, looks like {0:theyre} trying to commit suicide!", owner)); //TODO: theyre macro
+            var othersMessage = Loc.GetString("{0:theName} is attempting to bite {0:their} own tongue!", owner);
+            owner.PopupMessageOtherClients(othersMessage);
+
+            var selfMessage = Loc.GetString("You attempt to bite your own tongue!");
+            owner.PopupMessage(selfMessage);
+
             dmgComponent.ChangeDamage(DamageType.Piercing, 500, true, owner);
 
             // Prevent the player from returning to the body. Yes, this is an ugly hack.

Content.Server/Chat/ChatManager.cs

@@ -109,6 +109,9 @@ namespace Content.Server.Chat
                 message = handler(source, message);
             }
 
+            // Ensure the first letter inside the message string is always a capital letter
+            message = message[0].ToString().ToUpper() + message.Remove(0,1);
+
             var pos = source.Transform.GridPosition;
             var clients = _playerManager.GetPlayersInRange(pos, VoiceRange).Select(p => p.ConnectedClient);
 

Content.Server/GameObjects/Components/Access/IdCardConsoleComponent.cs

@@ -2,11 +2,11 @@
 using System.Collections.Generic;
 using System.Linq;
 using Content.Server.GameObjects.Components.Items.Storage;
-using Content.Server.Interfaces;
 using Content.Server.Interfaces.GameObjects.Components.Items;
 using Content.Server.Utility;
 using Content.Shared.Access;
 using Content.Shared.GameObjects.Components.Access;
+using Content.Shared.Interfaces;
 using Content.Shared.Interfaces.GameObjects.Components;
 using Robust.Server.GameObjects.Components.Container;
 using Robust.Server.GameObjects.Components.UserInterface;
@@ -25,7 +25,6 @@ namespace Content.Server.GameObjects.Components.Access
     [ComponentReference(typeof(IActivate))]
     public class IdCardConsoleComponent : SharedIdCardConsoleComponent, IActivate
     {
-        [Dependency] private readonly IServerNotifyManager _notifyManager = default!;
         [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
 
         private ContainerSlot _privilegedIdContainer = default!;
@@ -132,7 +131,7 @@ namespace Content.Server.GameObjects.Components.Access
         {
             if (!user.TryGetComponent(out IHandsComponent? hands))
             {
-                _notifyManager.PopupMessage(Owner.Transform.GridPosition, user, Loc.GetString("You have no hands."));
+                Owner.PopupMessage(user, Loc.GetString("You have no hands."));
                 return;
             }
 
@@ -161,7 +160,7 @@ namespace Content.Server.GameObjects.Components.Access
 
             if (!hands.Drop(hands.ActiveHand, container))
             {
-                _notifyManager.PopupMessage(Owner.Transform.GridPosition, user, Loc.GetString("You can't let go of the ID card!"));
+                Owner.PopupMessage(user, Loc.GetString("You can't let go of the ID card!"));
                 return;
             }
             UpdateUserInterface();

Content.Server/GameObjects/Components/ActionBlocking/CuffableComponent.cs

@@ -1,11 +1,9 @@
-
-using Robust.Server.GameObjects;
+using Robust.Server.GameObjects;
 using Content.Shared.GameObjects.EntitySystems;
 using Content.Shared.Interfaces;
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
-using Robust.Shared.IoC;
 using Robust.Shared.Localization;
 using Content.Server.GameObjects.EntitySystems.DoAfter;
 using Robust.Shared.ViewVariables;
@@ -22,6 +20,7 @@ using Content.Shared.GameObjects.Components.Mobs;
 using Robust.Shared.Maths;
 using System;
 using System.Collections.Generic;
+using Content.Shared.Utility;
 using Content.Server.GameObjects.Components.GUI;
 
 namespace Content.Server.GameObjects.Components.ActionBlocking
@@ -29,9 +28,6 @@ namespace Content.Server.GameObjects.Components.ActionBlocking
     [RegisterComponent]
     public class CuffableComponent : SharedCuffableComponent
     {
-        [Dependency]
-        private readonly ISharedNotifyManager _notifyManager;
-
         /// <summary>
         /// How many of this entity's hands are currently cuffed.
         /// </summary>
@@ -109,11 +105,7 @@ namespace Content.Server.GameObjects.Components.ActionBlocking
                 return;
             }
 
-            if (!EntitySystem.Get<SharedInteractionSystem>().InRangeUnobstructed(
-                    handcuff.Transform.MapPosition,
-                    Owner.Transform.MapPosition,
-                    _interactRange,
-                    ignoredEnt: Owner))
+            if (!handcuff.InRangeUnobstructed(Owner, _interactRange))
             {
                 Logger.Warning("Handcuffs being applied to player are obstructed or too far away! This should not happen!");
                 return;
@@ -193,8 +185,14 @@ namespace Content.Server.GameObjects.Components.ActionBlocking
         {
             if (Owner.TryGetComponent(out ServerStatusEffectsComponent status))
             {
-                status.ChangeStatusEffectIcon(StatusEffect.Cuffed,
-                    CanStillInteract ? "/Textures/Interface/StatusEffects/Handcuffed/Uncuffed.png" : "/Textures/Interface/StatusEffects/Handcuffed/Handcuffed.png");
+                if (CanStillInteract)
+                {
+                    status.RemoveStatusEffect(StatusEffect.Cuffed);
+                }
+                else
+                {
+                    status.ChangeStatusEffectIcon(StatusEffect.Cuffed, "/Textures/Interface/StatusEffects/Handcuffed/Handcuffed.png");
+                }
             }
         }
 
@@ -228,32 +226,23 @@ namespace Content.Server.GameObjects.Components.ActionBlocking
 
             if (!isOwner && !ActionBlockerSystem.CanInteract(user))
             {
-                user.PopupMessage(user, Loc.GetString("You can't do that!"));
+                user.PopupMessage(Loc.GetString("You can't do that!"));
                 return;
             }
 
-            if (!isOwner &&
-                !EntitySystem.Get<SharedInteractionSystem>().InRangeUnobstructed(
-                    user.Transform.MapPosition,
-                    Owner.Transform.MapPosition,
-                    _interactRange,
-                    ignoredEnt: Owner))
+            if (!isOwner && user.InRangeUnobstructed(Owner, _interactRange))
             {
-                user.PopupMessage(user, Loc.GetString("You are too far away to remove the cuffs."));
+                user.PopupMessage(Loc.GetString("You are too far away to remove the cuffs."));
                 return;
             }
 
-            if (!EntitySystem.Get<SharedInteractionSystem>().InRangeUnobstructed(
-                    cuffsToRemove.Transform.MapPosition,
-                    Owner.Transform.MapPosition,
-                    _interactRange,
-                    ignoredEnt: Owner))
+            if (!cuffsToRemove.InRangeUnobstructed(Owner, _interactRange))
             {
                 Logger.Warning("Handcuffs being removed from player are obstructed or too far away! This should not happen!");
                 return;
             }
 
-            user.PopupMessage(user, Loc.GetString("You start removing the cuffs."));
+            user.PopupMessage(Loc.GetString("You start removing the cuffs."));
 
             var audio = EntitySystem.Get<AudioSystem>();
             audio.PlayFromEntity(isOwner ? cuff.StartBreakoutSound : cuff.StartUncuffSound, Owner);
@@ -298,29 +287,29 @@ namespace Content.Server.GameObjects.Components.ActionBlocking
 
                 if (CuffedHandCount == 0)
                 {
-                    _notifyManager.PopupMessage(user, user, Loc.GetString("You successfully remove the cuffs."));
+                    user.PopupMessage(Loc.GetString("You successfully remove the cuffs."));
 
                     if (!isOwner)
                     {
-                        _notifyManager.PopupMessage(user, Owner, Loc.GetString("{0:theName} uncuffs your hands.", user));
+                        user.PopupMessage(Owner, Loc.GetString("{0:theName} uncuffs your hands.", user));
                     }
                 }
                 else
                 {
                     if (!isOwner)
                     {
-                        _notifyManager.PopupMessage(user, user, Loc.GetString("You successfully remove the cuffs. {0} of {1:theName}'s hands remain cuffed.", CuffedHandCount, user));
-                        _notifyManager.PopupMessage(user, Owner, Loc.GetString("{0:theName} removes your cuffs. {1} of your hands remain cuffed.", user, CuffedHandCount));
+                        user.PopupMessage(Loc.GetString("You successfully remove the cuffs. {0} of {1:theName}'s hands remain cuffed.", CuffedHandCount, user));
+                        user.PopupMessage(Owner, Loc.GetString("{0:theName} removes your cuffs. {1} of your hands remain cuffed.", user, CuffedHandCount));
                     }
                     else
                     {
-                        _notifyManager.PopupMessage(user, user, Loc.GetString("You successfully remove the cuffs. {0} of your hands remain cuffed.", CuffedHandCount));
+                        user.PopupMessage(Loc.GetString("You successfully remove the cuffs. {0} of your hands remain cuffed.", CuffedHandCount));
                     }
                 }
             }
             else
             {
-                _notifyManager.PopupMessage(user, user, Loc.GetString("You fail to remove the cuffs."));
+                user.PopupMessage(Loc.GetString("You fail to remove the cuffs."));
             }
 
             return;

Content.Server/GameObjects/Components/ActionBlocking/HandcuffComponent.cs

@@ -16,15 +16,13 @@ using Content.Shared.GameObjects.Components.ActionBlocking;
 using Content.Server.GameObjects.Components.Mobs;
 using Robust.Shared.Maths;
 using System;
+using Content.Shared.Utility;
 
 namespace Content.Server.GameObjects.Components.ActionBlocking
 {
     [RegisterComponent]
     public class HandcuffComponent : SharedHandcuffComponent, IAfterInteract
     {
-        [Dependency]
-        private readonly ISharedNotifyManager _notifyManager;
-
         /// <summary>
         ///     The time it takes to apply a <see cref="CuffedComponent"/> to an entity.
         /// </summary>
@@ -160,40 +158,36 @@ namespace Content.Server.GameObjects.Components.ActionBlocking
 
             if (eventArgs.Target == eventArgs.User)
             {
-                _notifyManager.PopupMessage(eventArgs.User, eventArgs.User, Loc.GetString("You can't cuff yourself!"));
+                eventArgs.User.PopupMessage(Loc.GetString("You can't cuff yourself!"));
                 return;
             }
 
             if (Broken)
             {
-                _notifyManager.PopupMessage(eventArgs.User, eventArgs.User, Loc.GetString("The cuffs are broken!"));
+                eventArgs.User.PopupMessage(Loc.GetString("The cuffs are broken!"));
                 return;
             }
 
             if (!eventArgs.Target.TryGetComponent<HandsComponent>(out var hands))
             {
-                _notifyManager.PopupMessage(eventArgs.User, eventArgs.User, Loc.GetString("{0:theName} has no hands!", eventArgs.Target));
+                eventArgs.User.PopupMessage(Loc.GetString("{0:theName} has no hands!", eventArgs.Target));
                 return;
             }
 
             if (cuffed.CuffedHandCount == hands.Count)
             {
-                _notifyManager.PopupMessage(eventArgs.User, eventArgs.User, Loc.GetString("{0:theName} has no free hands to handcuff!", eventArgs.Target));
+                eventArgs.User.PopupMessage(Loc.GetString("{0:theName} has no free hands to handcuff!", eventArgs.Target));
                 return;
             }
 
-            if (!EntitySystem.Get<SharedInteractionSystem>().InRangeUnobstructed(
-                    eventArgs.User.Transform.MapPosition,
-                    eventArgs.Target.Transform.MapPosition,
-                    _interactRange,
-                    ignoredEnt: Owner))
+            if (!eventArgs.InRangeUnobstructed(_interactRange, ignoreInsideBlocker: true))
             {
-                _notifyManager.PopupMessage(eventArgs.User, eventArgs.User, Loc.GetString("You are too far away to use the cuffs!"));
+                eventArgs.User.PopupMessage(Loc.GetString("You are too far away to use the cuffs!"));
                 return;
             }
 
-            _notifyManager.PopupMessage(eventArgs.User, eventArgs.User, Loc.GetString("You start cuffing {0:theName}.", eventArgs.Target));
-            _notifyManager.PopupMessage(eventArgs.User, eventArgs.Target, Loc.GetString("{0:theName} starts cuffing you!", eventArgs.User));
+            eventArgs.User.PopupMessage(Loc.GetString("You start cuffing {0:theName}.", eventArgs.Target));
+            eventArgs.User.PopupMessage(eventArgs.Target, Loc.GetString("{0:theName} starts cuffing you!", eventArgs.User));
             _audioSystem.PlayFromEntity(StartCuffSound, Owner);
 
             TryUpdateCuff(eventArgs.User, eventArgs.Target, cuffed);
@@ -225,8 +219,8 @@ namespace Content.Server.GameObjects.Components.ActionBlocking
             if (result != DoAfterStatus.Cancelled)
             {
                 _audioSystem.PlayFromEntity(EndCuffSound, Owner);
-                _notifyManager.PopupMessage(user, user, Loc.GetString("You successfully cuff {0:theName}.", target));
-                _notifyManager.PopupMessage(target, target, Loc.GetString("You have been cuffed by {0:theName}!", user));
+                user.PopupMessage(Loc.GetString("You successfully cuff {0:theName}.", target));
+                target.PopupMessage(Loc.GetString("You have been cuffed by {0:theName}!", user));
 
                 if (user.TryGetComponent<HandsComponent>(out var hands))
                 {
@@ -240,8 +234,8 @@ namespace Content.Server.GameObjects.Components.ActionBlocking
             }
             else
             {
-                user.PopupMessage(user, Loc.GetString("You were interrupted while cuffing {0:theName}!", target));
-                target.PopupMessage(target, Loc.GetString("You interrupt {0:theName} while they are cuffing you!", user));
+                user.PopupMessage(Loc.GetString("You were interrupted while cuffing {0:theName}!", target));
+                target.PopupMessage(Loc.GetString("You interrupt {0:theName} while they are cuffing you!", user));
             }
         }
     }

Content.Server/GameObjects/Components/Atmos/GasAnalyzerComponent.cs

@@ -1,12 +1,12 @@
 #nullable enable
 using System.Collections.Generic;
 using Content.Server.GameObjects.EntitySystems;
-using Content.Server.Interfaces;
 using Content.Server.Interfaces.GameObjects.Components.Items;
 using Content.Server.Utility;
 using Content.Shared.Atmos;
 using Content.Shared.GameObjects.Components;
 using Content.Shared.GameObjects.EntitySystems;
+using Content.Shared.Interfaces;
 using Content.Shared.Interfaces.GameObjects.Components;
 using Robust.Server.GameObjects.Components.UserInterface;
 using Robust.Server.Interfaces.GameObjects;
@@ -24,7 +24,6 @@ namespace Content.Server.GameObjects.Components.Atmos
     [RegisterComponent]
     public class GasAnalyzerComponent : SharedGasAnalyzerComponent, IAfterInteract, IDropped, IUse
     {
-        [Dependency] private readonly IServerNotifyManager _notifyManager = default!;
         [Dependency] private readonly IMapManager _mapManager = default!;
 
         private GasAnalyzerDanger _pressureDanger;
@@ -207,17 +206,14 @@ namespace Content.Server.GameObjects.Components.Atmos
 
                     if (!player.TryGetComponent(out IHandsComponent? handsComponent))
                     {
-                        _notifyManager.PopupMessage(Owner.Transform.GridPosition, player,
-                            Loc.GetString("You have no hands."));
+                        Owner.PopupMessage(player, Loc.GetString("You have no hands."));
                         return;
                     }
 
                     var activeHandEntity = handsComponent.GetActiveHand?.Owner;
                     if (activeHandEntity == null || !activeHandEntity.TryGetComponent(out GasAnalyzerComponent? gasAnalyzer))
                     {
-                        _notifyManager.PopupMessage(serverMsg.Session.AttachedEntity,
-                            serverMsg.Session.AttachedEntity,
-                            Loc.GetString("You need a Gas Analyzer in your hand!"));
+                        serverMsg.Session.AttachedEntity.PopupMessage(Loc.GetString("You need a Gas Analyzer in your hand!"));
                         return;
                     }
 
@@ -231,7 +227,7 @@ namespace Content.Server.GameObjects.Components.Atmos
         {
             if (!eventArgs.CanReach)
             {
-                _notifyManager.PopupMessage(eventArgs.User, eventArgs.User, Loc.GetString("You can't reach there!"));
+                eventArgs.User.PopupMessage(Loc.GetString("You can't reach there!"));
                 return;
             }
 

Content.Server/GameObjects/Components/Atmos/GridAtmosphereComponent.cs

@@ -14,10 +14,7 @@ using Robust.Shared.GameObjects;
 using Robust.Shared.GameObjects.Components.Map;
 using Robust.Shared.GameObjects.Components.Transform;
 using Robust.Shared.Interfaces.Map;
-using Robust.Shared.Interfaces.Timing;
-using Robust.Shared.IoC;
 using Robust.Shared.Map;
-using Robust.Shared.Maths;
 using Robust.Shared.Serialization;
 using Robust.Shared.Timing;
 using Robust.Shared.ViewVariables;
@@ -32,6 +29,8 @@ namespace Content.Server.GameObjects.Components.Atmos
     public class GridAtmosphereComponent : Component, IGridAtmosphereComponent
     {
         [Robust.Shared.IoC.Dependency] private IMapManager _mapManager = default!;
+        [Robust.Shared.IoC.Dependency] private ITileDefinitionManager _tileDefinitionManager = default!;
+        [Robust.Shared.IoC.Dependency] private IServerEntityManager _serverEntityManager = default!;
 
         /// <summary>
         ///     Check current execution time every n instances processed.
@@ -70,7 +69,7 @@ namespace Content.Server.GameObjects.Components.Atmos
         private double _excitedGroupLastProcess;
 
         [ViewVariables]
-        private readonly Dictionary<MapIndices, TileAtmosphere> _tiles = new Dictionary<MapIndices, TileAtmosphere>(1000);
+        protected readonly Dictionary<MapIndices, TileAtmosphere> Tiles = new Dictionary<MapIndices, TileAtmosphere>(1000);
 
         [ViewVariables]
         private readonly HashSet<TileAtmosphere> _activeTiles = new HashSet<TileAtmosphere>(1000);
@@ -154,23 +153,13 @@ namespace Content.Server.GameObjects.Components.Atmos
         }
 
         /// <inheritdoc />
-        public void PryTile(MapIndices indices)
+        public virtual void PryTile(MapIndices indices)
         {
             if (!Owner.TryGetComponent(out IMapGridComponent? mapGridComponent)) return;
             if (IsSpace(indices) || IsAirBlocked(indices)) return;
 
             var mapGrid = mapGridComponent.Grid;
-            var tile = mapGrid.GetTileRef(indices).Tile;
-
-            var tileDefinitionManager = IoCManager.Resolve<ITileDefinitionManager>();
-            var tileDef = (ContentTileDefinition)tileDefinitionManager[tile.TypeId];
-
-            var underplating = tileDefinitionManager["underplating"];
-            mapGrid.SetTile(indices, new Tile(underplating.TileId));
-
-            //Actually spawn the relevant tile item at the right position and give it some offset to the corner.
-            var tileItem = IoCManager.Resolve<IServerEntityManager>().SpawnEntity(tileDef.ItemDropPrototypeName, new GridCoordinates(indices.X, indices.Y, mapGrid));
-            tileItem.Transform.WorldPosition += (0.2f, 0.2f);
+            indices.PryTile(mapGrid.Index, _mapManager, _tileDefinitionManager, _serverEntityManager);
         }
 
         public override void Initialize()
@@ -185,17 +174,17 @@ namespace Content.Server.GameObjects.Components.Atmos
             RepopulateTiles();
         }
 
-        public void RepopulateTiles()
+        public virtual void RepopulateTiles()
         {
             if (!Owner.TryGetComponent(out IMapGridComponent? mapGrid)) return;
 
             foreach (var tile in mapGrid.Grid.GetAllTiles())
             {
-                if(!_tiles.ContainsKey(tile.GridIndices))
-                    _tiles.Add(tile.GridIndices, new TileAtmosphere(this, tile.GridIndex, tile.GridIndices, new GasMixture(GetVolumeForCells(1)){Temperature = Atmospherics.T20C}));
+                if(!Tiles.ContainsKey(tile.GridIndices))
+                    Tiles.Add(tile.GridIndices, new TileAtmosphere(this, tile.GridIndex, tile.GridIndices, new GasMixture(GetVolumeForCells(1)){Temperature = Atmospherics.T20C}));
             }
 
-            foreach (var (_, tile) in _tiles.ToArray())
+            foreach (var (_, tile) in Tiles.ToArray())
             {
                 tile.UpdateAdjacent();
                 tile.UpdateVisuals();
@@ -203,12 +192,12 @@ namespace Content.Server.GameObjects.Components.Atmos
         }
 
         /// <inheritdoc />
-        public void Invalidate(MapIndices indices)
+        public virtual void Invalidate(MapIndices indices)
         {
             _invalidatedCoords.Add(indices);
         }
 
-        private void Revalidate()
+        protected virtual void Revalidate()
         {
             if (!Owner.TryGetComponent(out IMapGridComponent? mapGrid)) return;
 
@@ -219,14 +208,14 @@ namespace Content.Server.GameObjects.Components.Atmos
                 if (tile == null)
                 {
                     tile = new TileAtmosphere(this, mapGrid.Grid.Index, indices, new GasMixture(GetVolumeForCells(1)){Temperature = Atmospherics.T20C});
-                    _tiles[indices] = tile;
+                    Tiles[indices] = tile;
                 }
 
                 if (IsSpace(indices))
                 {
                     tile.Air = new GasMixture(GetVolumeForCells(1));
                     tile.Air.MarkImmutable();
-                    _tiles[indices] = tile;
+                    Tiles[indices] = tile;
 
                 } else if (IsAirBlocked(indices))
                 {
@@ -271,18 +260,18 @@ namespace Content.Server.GameObjects.Components.Atmos
         }
 
         /// <inheritdoc />
-        public void FixVacuum(MapIndices indices)
+        public virtual void FixVacuum(MapIndices indices)
         {
             if (!Owner.TryGetComponent(out IMapGridComponent? mapGrid)) return;
             var tile = GetTile(indices);
             if (tile?.GridIndex != mapGrid.Grid.Index) return;
             var adjacent = GetAdjacentTiles(indices);
             tile.Air = new GasMixture(GetVolumeForCells(1)){Temperature = Atmospherics.T20C};
-            _tiles[indices] = tile;
+            Tiles[indices] = tile;
 
             var ratio = 1f / adjacent.Count;
 
-            foreach (var (direction, adj) in adjacent)
+            foreach (var (_, adj) in adjacent)
             {
                 var mix = adj.Air.RemoveRatio(ratio);
                 tile.Air.Merge(mix);
@@ -292,17 +281,17 @@ namespace Content.Server.GameObjects.Components.Atmos
 
         /// <inheritdoc />
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public void AddActiveTile(TileAtmosphere? tile)
+        public virtual void AddActiveTile(TileAtmosphere? tile)
         {
             if (!Owner.TryGetComponent(out IMapGridComponent? mapGrid)) return;
-            if (tile?.GridIndex != mapGrid.Grid.Index || tile?.Air == null) return;
+            if (tile?.GridIndex != mapGrid.Grid.Index) return;
             tile.Excited = true;
             _activeTiles.Add(tile);
         }
 
         /// <inheritdoc />
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public void RemoveActiveTile(TileAtmosphere? tile)
+        public virtual void RemoveActiveTile(TileAtmosphere? tile)
         {
             if (tile == null) return;
             _activeTiles.Remove(tile);
@@ -312,7 +301,7 @@ namespace Content.Server.GameObjects.Components.Atmos
 
         /// <inheritdoc />
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public void AddHotspotTile(TileAtmosphere? tile)
+        public virtual void AddHotspotTile(TileAtmosphere? tile)
         {
             if (!Owner.TryGetComponent(out IMapGridComponent? mapGrid)) return;
             if (tile?.GridIndex != mapGrid.Grid.Index || tile?.Air == null) return;
@@ -321,20 +310,20 @@ namespace Content.Server.GameObjects.Components.Atmos
 
         /// <inheritdoc />
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public void RemoveHotspotTile(TileAtmosphere? tile)
+        public virtual void RemoveHotspotTile(TileAtmosphere? tile)
         {
             if (tile == null) return;
             _hotspotTiles.Remove(tile);
         }
 
-        public void AddSuperconductivityTile(TileAtmosphere? tile)
+        public virtual void AddSuperconductivityTile(TileAtmosphere? tile)
         {
             if (!Owner.TryGetComponent(out IMapGridComponent? mapGrid)) return;
             if (tile?.GridIndex != mapGrid.Grid.Index) return;
             _superconductivityTiles.Add(tile);
         }
 
-        public void RemoveSuperconductivityTile(TileAtmosphere? tile)
+        public virtual void RemoveSuperconductivityTile(TileAtmosphere? tile)
         {
             if (tile == null) return;
             _superconductivityTiles.Remove(tile);
@@ -342,7 +331,7 @@ namespace Content.Server.GameObjects.Components.Atmos
 
         /// <inheritdoc />
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public void AddHighPressureDelta(TileAtmosphere? tile)
+        public virtual void AddHighPressureDelta(TileAtmosphere? tile)
         {
             if (!Owner.TryGetComponent(out IMapGridComponent? mapGrid)) return;
             if (tile?.GridIndex != mapGrid.Grid.Index) return;
@@ -351,21 +340,21 @@ namespace Content.Server.GameObjects.Components.Atmos
 
         /// <inheritdoc />
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public bool HasHighPressureDelta(TileAtmosphere tile)
+        public virtual bool HasHighPressureDelta(TileAtmosphere tile)
         {
             return _highPressureDelta.Contains(tile);
         }
 
         /// <inheritdoc />
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public void AddExcitedGroup(ExcitedGroup excitedGroup)
+        public virtual void AddExcitedGroup(ExcitedGroup excitedGroup)
         {
             _excitedGroups.Add(excitedGroup);
         }
 
         /// <inheritdoc />
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public void RemoveExcitedGroup(ExcitedGroup excitedGroup)
+        public virtual void RemoveExcitedGroup(ExcitedGroup excitedGroup)
         {
             _excitedGroups.Remove(excitedGroup);
         }
@@ -401,7 +390,7 @@ namespace Content.Server.GameObjects.Components.Atmos
         {
             if (!Owner.TryGetComponent(out IMapGridComponent? mapGrid)) return null;
 
-            if (_tiles.TryGetValue(indices, out var tile)) return tile;
+            if (Tiles.TryGetValue(indices, out var tile)) return tile;
 
             // We don't have that tile!
             if (IsSpace(indices) && createSpace)
@@ -454,7 +443,7 @@ namespace Content.Server.GameObjects.Components.Atmos
         }
 
         /// <inheritdoc />
-        public void Update(float frameTime)
+        public virtual void Update(float frameTime)
         {
             _timer += frameTime;
 
@@ -554,7 +543,7 @@ namespace Content.Server.GameObjects.Components.Atmos
             UpdateCounter++;
         }
 
-        public bool ProcessTileEqualize(bool resumed = false)
+        public virtual bool ProcessTileEqualize(bool resumed = false)
         {
             _stopwatch.Restart();
 
@@ -581,7 +570,7 @@ namespace Content.Server.GameObjects.Components.Atmos
             return true;
         }
 
-        public bool ProcessActiveTiles(bool resumed = false)
+        public virtual bool ProcessActiveTiles(bool resumed = false)
         {
             _stopwatch.Restart();
 
@@ -608,7 +597,7 @@ namespace Content.Server.GameObjects.Components.Atmos
             return true;
         }
 
-        public bool ProcessExcitedGroups(bool resumed = false)
+        public virtual bool ProcessExcitedGroups(bool resumed = false)
         {
             _stopwatch.Restart();
 
@@ -642,7 +631,7 @@ namespace Content.Server.GameObjects.Components.Atmos
             return true;
         }
 
-        public bool ProcessHighPressureDelta(bool resumed = false)
+        public virtual bool ProcessHighPressureDelta(bool resumed = false)
         {
             _stopwatch.Restart();
 
@@ -672,7 +661,7 @@ namespace Content.Server.GameObjects.Components.Atmos
             return true;
         }
 
-        private bool ProcessHotspots(bool resumed = false)
+        protected virtual bool ProcessHotspots(bool resumed = false)
         {
             _stopwatch.Restart();
 
@@ -699,7 +688,7 @@ namespace Content.Server.GameObjects.Components.Atmos
             return true;
         }
 
-        private bool ProcessSuperconductivity(bool resumed = false)
+        protected virtual bool ProcessSuperconductivity(bool resumed = false)
         {
             _stopwatch.Restart();
 
@@ -726,7 +715,7 @@ namespace Content.Server.GameObjects.Components.Atmos
             return true;
         }
 
-        private bool ProcessPipeNets(bool resumed = false)
+        protected virtual bool ProcessPipeNets(bool resumed = false)
         {
             _stopwatch.Restart();
 
@@ -753,7 +742,7 @@ namespace Content.Server.GameObjects.Components.Atmos
             return true;
         }
 
-        private bool ProcessPipeNetDevices(bool resumed = false)
+        protected virtual bool ProcessPipeNetDevices(bool resumed = false)
         {
             _stopwatch.Restart();
 
@@ -761,7 +750,7 @@ namespace Content.Server.GameObjects.Components.Atmos
                 _currentRunPipeNetDevice = new Queue<PipeNetDeviceComponent>(_pipeNetDevices);
 
             var number = 0;
-            while (_currentRunPipeNet.Count > 0)
+            while (_currentRunPipeNetDevice.Count > 0)
             {
                 var device = _currentRunPipeNetDevice.Dequeue();
                 device.Update();
@@ -810,11 +799,11 @@ namespace Content.Server.GameObjects.Components.Atmos
                     !serializer.TryReadDataField("tiles", out Dictionary<MapIndices, int>? tiles))
                     return;
 
-                _tiles.Clear();
+                Tiles.Clear();
 
                 foreach (var (indices, mix) in tiles!)
                 {
-                    _tiles.Add(indices, new TileAtmosphere(this, gridId, indices, (GasMixture)uniqueMixes![mix].Clone()));
+                    Tiles.Add(indices, new TileAtmosphere(this, gridId, indices, (GasMixture)uniqueMixes![mix].Clone()));
                     Invalidate(indices);
                 }
             }
@@ -823,7 +812,7 @@ namespace Content.Server.GameObjects.Components.Atmos
                 var uniqueMixes = new List<GasMixture>();
                 var uniqueMixHash = new Dictionary<GasMixture, int>();
                 var tiles = new Dictionary<MapIndices, int>();
-                foreach (var (indices, tile) in _tiles)
+                foreach (var (indices, tile) in Tiles)
                 {
                     if (tile.Air == null) continue;
 
@@ -846,7 +835,7 @@ namespace Content.Server.GameObjects.Components.Atmos
 
         public IEnumerator<TileAtmosphere> GetEnumerator()
         {
-            return _tiles.Values.GetEnumerator();
+            return Tiles.Values.GetEnumerator();
         }
 
         IEnumerator IEnumerable.GetEnumerator()
@@ -855,7 +844,7 @@ namespace Content.Server.GameObjects.Components.Atmos
         }
 
         /// <inheritdoc />
-        public void BurnTile(MapIndices gridIndices)
+        public virtual void BurnTile(MapIndices gridIndices)
         {
             // TODO ATMOS
         }

Content.Server/GameObjects/Components/Atmos/Piping/Pumps/BasePumpComponent.cs

@@ -1,6 +1,9 @@
 using Content.Server.Atmos;
 using Content.Server.GameObjects.Components.NodeContainer;
 using Content.Server.GameObjects.Components.NodeContainer.Nodes;
+using Content.Shared.GameObjects.Components.Atmos;
+using Content.Shared.GameObjects.Atmos;
+using Robust.Server.GameObjects;
 using Robust.Shared.Log;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
@@ -13,6 +16,21 @@ namespace Content.Server.GameObjects.Components.Atmos.Piping
     /// </summary>
     public abstract class BasePumpComponent : PipeNetDeviceComponent
     {
+        /// <summary>
+        ///     If the pump is currently pumping.
+        /// </summary>
+        [ViewVariables(VVAccess.ReadWrite)]
+        public bool PumpEnabled
+        {
+            get => _pumpEnabled;
+            set
+            {
+                _pumpEnabled = value;
+                UpdateAppearance();
+            }
+        }
+        private bool _pumpEnabled = true;
+
         /// <summary>
         ///     Needs to be same <see cref="PipeDirection"/> as that of a <see cref="Pipe"/> on this entity.
         /// </summary>
@@ -31,6 +49,8 @@ namespace Content.Server.GameObjects.Components.Atmos.Piping
         [ViewVariables]
         private PipeNode _outletPipe;
 
+        private AppearanceComponent _appearance;
+
         public override void ExposeData(ObjectSerializer serializer)
         {
             base.ExposeData(serializer);
@@ -56,13 +76,23 @@ namespace Content.Server.GameObjects.Components.Atmos.Piping
                 Logger.Error($"{typeof(BasePumpComponent)} on entity {Owner.Uid} could not find compatible {nameof(PipeNode)}s on its {nameof(NodeContainerComponent)}.");
                 return;
             }
+            Owner.TryGetComponent(out _appearance);
+            UpdateAppearance();
         }
 
         public override void Update()
         {
+            if (!PumpEnabled)
+                return;
+
             PumpGas(_inletPipe.Air, _outletPipe.Air);
         }
 
         protected abstract void PumpGas(GasMixture inletGas, GasMixture outletGas);
+
+        private void UpdateAppearance()
+        {
+            _appearance?.SetData(PumpVisuals.VisualState, new PumpVisualState(_inletDirection, _outletDirection, _inletPipe.ConduitLayer, _outletPipe.ConduitLayer, PumpEnabled));
+        }
     }
 }

Content.Server/GameObjects/Components/Atmos/Piping/Pumps/DebugPumpComponent.cs

@@ -1,21 +0,0 @@
-using Content.Server.Atmos;
-using Robust.Shared.GameObjects;
-
-namespace Content.Server.GameObjects.Components.Atmos.Piping
-{
-    /// <summary>
-    ///  Placeholder example of pump functionality.
-    /// </summary>
-    [RegisterComponent]
-    [ComponentReference(typeof(BasePumpComponent))]
-    public class DebugPumpComponent : BasePumpComponent
-    {
-        public override string Name => "DebugPump";
-
-        protected override void PumpGas(GasMixture inletGas, GasMixture outletGas)
-        {
-            outletGas.Merge(inletGas);
-            inletGas.Clear();
-        }
-    }
-}

Content.Server/GameObjects/Components/Atmos/Piping/Pumps/PressurePumpComponent.cs

@@ -0,0 +1,65 @@
+using Content.Server.Atmos;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
+using Robust.Shared.ViewVariables;
+using System;
+
+namespace Content.Server.GameObjects.Components.Atmos.Piping.Pumps
+{
+    [RegisterComponent]
+    [ComponentReference(typeof(BasePumpComponent))]
+    public class PressurePumpComponent : BasePumpComponent
+    {
+        public override string Name => "PressurePump";
+
+        /// <summary>
+        ///     The pressure this pump will try to bring its oulet too.
+        /// </summary>
+        [ViewVariables(VVAccess.ReadWrite)]
+        public int PressurePumpTarget
+        {
+            get => _pressurePumpTarget;
+            set => _pressurePumpTarget = Math.Clamp(value, 0, MaxPressurePumpTarget);
+        }
+        private int _pressurePumpTarget;
+
+        /// <summary>
+        ///     Max value <see cref="PressurePumpTarget"/> can be set to.
+        /// </summary>
+        [ViewVariables(VVAccess.ReadWrite)]
+        public int MaxPressurePumpTarget
+        {
+            get => _maxPressurePumpTarget;
+            set => Math.Max(value, 0);
+        }
+        private int _maxPressurePumpTarget;
+
+        /// <summary>
+        ///     Every upate, this pump will only increase the outlet pressure by this fraction of the amount needed to reach the <see cref="PressurePumpTarget"/>.
+        /// </summary>
+        [ViewVariables(VVAccess.ReadWrite)]
+        public float TransferRatio
+        {
+            get => _transferRatio;
+            set => _transferRatio = Math.Clamp(value, 0, 1);
+        }
+        private float _transferRatio;
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+            serializer.DataField(ref _pressurePumpTarget, "startingPressurePumpTarget", 0);
+            serializer.DataField(ref _maxPressurePumpTarget, "maxPressurePumpTarget", 100);
+            serializer.DataField(ref _transferRatio, "transferRatio", 0.5f);
+        }
+
+        protected override void PumpGas(GasMixture inletGas, GasMixture outletGas)
+        {
+            var goalDiff = PressurePumpTarget - outletGas.Pressure;
+            var realGoalPressureDiff = goalDiff * TransferRatio;
+            var realTargetPressure = outletGas.Pressure + realGoalPressureDiff;
+            var realCappedTargetPressure = Math.Max(realTargetPressure, outletGas.Pressure); //no lowering the outlet's pressure
+            inletGas.PumpGasTo(outletGas, realCappedTargetPressure);
+        }
+    }
+}

Content.Server/GameObjects/Components/Atmos/Piping/Pumps/VolumePumpComponent.cs

@@ -0,0 +1,46 @@
+using Content.Server.Atmos;
+using Content.Shared.Atmos;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
+using Robust.Shared.ViewVariables;
+using System;
+using System.Diagnostics;
+
+namespace Content.Server.GameObjects.Components.Atmos.Piping.Pumps
+{
+    [RegisterComponent]
+    [ComponentReference(typeof(BasePumpComponent))]
+    public class VolumePumpComponent : BasePumpComponent
+    {
+        [ViewVariables(VVAccess.ReadWrite)]
+        public int VolumePumpRate
+        {
+            get => _volumePumpRate;
+            set => _volumePumpRate = Math.Clamp(value, 0, MaxVolumePumpRate);
+        }
+        private int _volumePumpRate;
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        public int MaxVolumePumpRate
+        {
+            get => _maxVolumePumpRate;
+            set => Math.Max(value, 0);
+        }
+        private int _maxVolumePumpRate;
+
+        public override string Name => "VolumePump";
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+            serializer.DataField(ref _volumePumpRate, "startingVolumePumpRate", 0);
+            serializer.DataField(ref _maxVolumePumpRate, "maxVolumePumpRate", 100);
+        }
+
+        protected override void PumpGas(GasMixture inletGas, GasMixture outletGas)
+        {
+            var volumeRatio = Math.Clamp(VolumePumpRate / inletGas.Volume, 0, 1);
+            outletGas.Merge(inletGas.RemoveRatio(volumeRatio));
+        }
+    }
+}

Content.Server/GameObjects/Components/Atmos/UnsimulatedGridAtmosphereComponent.cs

@@ -0,0 +1,103 @@
+#nullable enable
+using System;
+using Content.Server.Atmos;
+using Content.Shared.Atmos;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components.Map;
+using Robust.Shared.Map;
+
+namespace Content.Server.GameObjects.Components.Atmos
+{
+    [RegisterComponent]
+    [ComponentReference(typeof(IGridAtmosphereComponent))]
+    [ComponentReference(typeof(GridAtmosphereComponent))]
+    [Serializable]
+    public class UnsimulatedGridAtmosphereComponent : GridAtmosphereComponent, IGridAtmosphereComponent
+    {
+        public override string Name => "UnsimulatedGridAtmosphere";
+
+        public override void PryTile(MapIndices indices) { }
+
+        public override void RepopulateTiles()
+        {
+            if (!Owner.TryGetComponent(out IMapGridComponent? mapGrid)) return;
+
+            foreach (var tile in mapGrid.Grid.GetAllTiles())
+            {
+                if(!Tiles.ContainsKey(tile.GridIndices))
+                    Tiles.Add(tile.GridIndices, new TileAtmosphere(this, tile.GridIndex, tile.GridIndices, new GasMixture(GetVolumeForCells(1)){Temperature = Atmospherics.T20C}));
+            }
+        }
+
+        public override void Invalidate(MapIndices indices) { }
+
+        protected override void Revalidate() { }
+
+        public override void FixVacuum(MapIndices indices) { }
+
+        public override void AddActiveTile(TileAtmosphere? tile) { }
+
+        public override void RemoveActiveTile(TileAtmosphere? tile) { }
+
+        public override void AddHotspotTile(TileAtmosphere? tile) { }
+
+        public override void RemoveHotspotTile(TileAtmosphere? tile) { }
+
+        public override void AddSuperconductivityTile(TileAtmosphere? tile) { }
+
+        public override void RemoveSuperconductivityTile(TileAtmosphere? tile) { }
+
+        public override void AddHighPressureDelta(TileAtmosphere? tile) { }
+
+        public override bool HasHighPressureDelta(TileAtmosphere tile)
+        {
+            return false;
+        }
+
+        public override void AddExcitedGroup(ExcitedGroup excitedGroup) { }
+
+        public override void RemoveExcitedGroup(ExcitedGroup excitedGroup) { }
+
+        public override void Update(float frameTime) { }
+
+        public override bool ProcessTileEqualize(bool resumed = false)
+        {
+            return false;
+        }
+
+        public override bool ProcessActiveTiles(bool resumed = false)
+        {
+            return false;
+        }
+
+        public override bool ProcessExcitedGroups(bool resumed = false)
+        {
+            return false;
+        }
+
+        public override bool ProcessHighPressureDelta(bool resumed = false)
+        {
+            return false;
+        }
+
+        protected override bool ProcessHotspots(bool resumed = false)
+        {
+            return false;
+        }
+
+        protected override bool ProcessSuperconductivity(bool resumed = false)
+        {
+            return false;
+        }
+
+        protected override bool ProcessPipeNets(bool resumed = false)
+        {
+            return false;
+        }
+
+        protected override bool ProcessPipeNetDevices(bool resumed = false)
+        {
+            return false;
+        }
+    }
+}

Content.Server/GameObjects/Components/Body/BodyManagerComponent.cs

@@ -8,7 +8,6 @@ using Content.Server.Body.Network;
 using Content.Server.GameObjects.Components.Metabolism;
 using Content.Server.GameObjects.EntitySystems;
 using Content.Server.Interfaces.GameObjects.Components.Interaction;
-using Content.Server.Mobs;
 using Content.Server.Observer;
 using Content.Shared.Body.Part;
 using Content.Shared.Body.Part.Properties.Movement;
@@ -20,6 +19,7 @@ using Content.Shared.GameObjects.Components.Damage;
 using Content.Shared.GameObjects.Components.Movement;
 using Robust.Server.Interfaces.Player;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Interfaces.Reflection;
 using Robust.Shared.IoC;
@@ -33,13 +33,14 @@ using Robust.Shared.ViewVariables;
 namespace Content.Server.GameObjects.Components.Body
 {
     /// <summary>
-    ///     Component representing a collection of <see cref="BodyPart"></see>
+    ///     Component representing a collection of <see cref="IBodyPart"></see>
     ///     attached to each other.
     /// </summary>
     [RegisterComponent]
     [ComponentReference(typeof(IDamageableComponent))]
+    [ComponentReference(typeof(ISharedBodyManagerComponent))]
     [ComponentReference(typeof(IBodyManagerComponent))]
-    public class BodyManagerComponent : SharedBodyManagerComponent, IBodyPartContainer, IRelayMoveInput
+    public class BodyManagerComponent : SharedBodyManagerComponent, IBodyPartContainer, IRelayMoveInput, IBodyManagerComponent
     {
         [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
         [Dependency] private readonly IBodyNetworkFactory _bodyNetworkFactory = default!;
@@ -47,38 +48,28 @@ namespace Content.Server.GameObjects.Components.Body
 
         [ViewVariables] private string _presetName = default!;
 
-        private readonly Dictionary<string, BodyPart> _parts = new Dictionary<string, BodyPart>();
+        private readonly Dictionary<string, IBodyPart> _parts = new Dictionary<string, IBodyPart>();
 
         [ViewVariables] private readonly Dictionary<Type, BodyNetwork> _networks = new Dictionary<Type, BodyNetwork>();
 
         /// <summary>
-        ///     All <see cref="BodyPart"></see> with <see cref="LegProperty"></see>
+        ///     All <see cref="IBodyPart"></see> with <see cref="LegProperty"></see>
         ///     that are currently affecting move speed, mapped to how big that leg
         ///     they're on is.
         /// </summary>
         [ViewVariables]
-        private readonly Dictionary<BodyPart, float> _activeLegs = new Dictionary<BodyPart, float>();
+        private readonly Dictionary<IBodyPart, float> _activeLegs = new Dictionary<IBodyPart, float>();
+
+        [ViewVariables] public BodyTemplate Template { get; private set; } = default!;
+
+        [ViewVariables] public BodyPreset Preset { get; private set; } = default!;
 
         /// <summary>
-        ///     The <see cref="BodyTemplate"/> that this <see cref="BodyManagerComponent"/>
-        ///     is adhering to.
-        /// </summary>
-        [ViewVariables]
-        public BodyTemplate Template { get; private set; } = default!;
-
-        /// <summary>
-        ///     The <see cref="BodyPreset"/> that this <see cref="BodyManagerComponent"/>
-        ///     is adhering to.
-        /// </summary>
-        [ViewVariables]
-        public BodyPreset Preset { get; private set; } = default!;
-
-        /// <summary>
-        ///     Maps <see cref="BodyTemplate"/> slot name to the <see cref="BodyPart"/>
+        ///     Maps <see cref="BodyTemplate"/> slot name to the <see cref="IBodyPart"/>
         ///     object filling it (if there is one).
         /// </summary>
         [ViewVariables]
-        public IReadOnlyDictionary<string, BodyPart> Parts => _parts;
+        public IReadOnlyDictionary<string, IBodyPart> Parts => _parts;
 
         /// <summary>
         ///     List of all slots in this body, taken from the keys of
@@ -170,7 +161,7 @@ namespace Content.Server.GameObjects.Components.Body
                 // Add a new BodyPart with the BodyPartPrototype as a baseline to our
                 // BodyComponent.
                 var addedPart = new BodyPart(newPartData);
-                AddBodyPart(addedPart, slotName);
+                TryAddPart(slotName, addedPart);
             }
 
             OnBodyChanged(); // TODO: Duplicate code
@@ -179,8 +170,8 @@ namespace Content.Server.GameObjects.Components.Body
         /// <summary>
         ///     Changes the current <see cref="BodyTemplate"/> to the given
         ///     <see cref="BodyTemplate"/>.
-        ///     Attempts to keep previous <see cref="BodyPart"/> if there is a slot for
-        ///     them in both <see cref="BodyTemplate"/>.
+        ///     Attempts to keep previous <see cref="IBodyPart"/> if there is a
+        ///     slot for them in both <see cref="BodyTemplate"/>.
         /// </summary>
         public void ChangeBodyTemplate(BodyTemplatePrototype newTemplate)
         {
@@ -279,25 +270,20 @@ namespace Content.Server.GameObjects.Components.Body
 
             foreach (var (key, value) in _activeLegs)
             {
-                if (key.TryGetProperty(out LegProperty legProperty))
+                if (key.TryGetProperty(out LegProperty? leg))
                 {
                     // Speed of a leg = base speed * (1+log1024(leg length))
-                    speedSum += legProperty.Speed * (1 + (float) Math.Log(value, 1024.0));
+                    speedSum += leg.Speed * (1 + (float) Math.Log(value, 1024.0));
                 }
             }
 
             if (speedSum <= 0.001f || _activeLegs.Count <= 0)
             {
-                // Case: no way of moving. Fall down.
-                StandingStateHelper.Down(Owner);
                 playerMover.BaseWalkSpeed = 0.8f;
                 playerMover.BaseSprintSpeed = 2.0f;
             }
             else
             {
-                // Case: have at least one leg. Set move speed.
-                StandingStateHelper.Standing(Owner);
-
                 // Extra legs stack diminishingly.
                 // Final speed = speed sum/(leg count-log4(leg count))
                 playerMover.BaseWalkSpeed =
@@ -320,11 +306,11 @@ namespace Content.Server.GameObjects.Components.Body
         /// <summary>
         ///     Recursively searches for if <see cref="target"/> is connected to
         ///     the center. Not efficient (O(n^2)), but most bodies don't have a ton
-        ///     of <see cref="BodyPart"/>s.
+        ///     of <see cref="IBodyPart"/>s.
         /// </summary>
         /// <param name="target">The body part to find the center for.</param>
         /// <returns>True if it is connected to the center, false otherwise.</returns>
-        private bool ConnectedToCenterPart(BodyPart target)
+        private bool ConnectedToCenterPart(IBodyPart target)
         {
             var searchedSlots = new List<string>();
 
@@ -334,9 +320,7 @@ namespace Content.Server.GameObjects.Components.Body
 
         private bool ConnectedToCenterPartRecursion(ICollection<string> searchedSlots, string slotName)
         {
-            TryGetBodyPart(slotName, out var part);
-
-            if (part == null)
+            if (!TryGetBodyPart(slotName, out var part))
             {
                 return false;
             }
@@ -366,14 +350,14 @@ namespace Content.Server.GameObjects.Components.Body
         }
 
         /// <summary>
-        ///     Finds the central <see cref="BodyPart"/>, if any, of this body based on
+        ///     Finds the central <see cref="IBodyPart"/>, if any, of this body based on
         ///     the <see cref="BodyTemplate"/>. For humans, this is the torso.
         /// </summary>
         /// <returns>The <see cref="BodyPart"/> if one exists, null otherwise.</returns>
-        private BodyPart? GetCenterBodyPart()
+        private IBodyPart? GetCenterBodyPart()
         {
             Parts.TryGetValue(Template.CenterSlot, out var center);
-            return center!;
+            return center;
         }
 
         /// <summary>
@@ -386,29 +370,31 @@ namespace Content.Server.GameObjects.Components.Body
         }
 
         /// <summary>
-        ///     Finds the <see cref="BodyPart"/> in the given <see cref="slotName"/> if
+        ///     Finds the <see cref="IBodyPart"/> in the given <see cref="slotName"/> if
         ///     one exists.
         /// </summary>
         /// <param name="slotName">The slot to search in.</param>
         /// <param name="result">The body part in that slot, if any.</param>
         /// <returns>True if found, false otherwise.</returns>
-        private bool TryGetBodyPart(string slotName, [NotNullWhen(true)] out BodyPart result)
+        private bool TryGetBodyPart(string slotName, [NotNullWhen(true)] out IBodyPart? result)
         {
             return Parts.TryGetValue(slotName, out result!);
         }
 
         /// <summary>
-        ///     Finds the slotName that the given <see cref="BodyPart"/> resides in.
+        ///     Finds the slotName that the given <see cref="IBodyPart"/> resides in.
         /// </summary>
-        /// <param name="part">The <see cref="BodyPart"/> to find the slot for.</param>
+        /// <param name="part">The <see cref="IBodyPart"/> to find the slot for.</param>
         /// <param name="result">The slot found, if any.</param>
         /// <returns>True if a slot was found, false otherwise</returns>
-        private bool TryGetSlotName(BodyPart part, [NotNullWhen(true)] out string result)
+        private bool TryGetSlotName(IBodyPart part, [NotNullWhen(true)] out string result)
         {
             // We enforce that there is only one of each value in the dictionary,
             // so we can iterate through the dictionary values to get the key from there.
-            result = Parts.FirstOrDefault(x => x.Value == part).Key;
-            return result != null;
+            var pair = Parts.FirstOrDefault(x => x.Value == part);
+            result = pair.Key;
+
+            return !pair.Equals(default);
         }
 
         /// <summary>
@@ -447,7 +433,7 @@ namespace Content.Server.GameObjects.Components.Body
         ///     True if successful, false if there was an error or no connected
         ///     <see cref="BodyPart"/>s were found.
         /// </returns>
-        public bool TryGetBodyPartConnections(string slotName, [NotNullWhen(true)] out List<BodyPart> result)
+        public bool TryGetBodyPartConnections(string slotName, [NotNullWhen(true)] out List<IBodyPart> result)
         {
             result = null!;
 
@@ -456,7 +442,7 @@ namespace Content.Server.GameObjects.Components.Body
                 return false;
             }
 
-            var toReturn = new List<BodyPart>();
+            var toReturn = new List<IBodyPart>();
             foreach (var connection in connections)
             {
                 if (TryGetBodyPart(connection, out var bodyPartResult))
@@ -480,9 +466,9 @@ namespace Content.Server.GameObjects.Components.Body
         /// </summary>
         /// <returns>
         ///     True if successful, false if there was an error or no connected
-        ///     <see cref="BodyPart"/>s were found.
+        ///     <see cref="IBodyPart"/>s were found.
         /// </returns>
-        private bool TryGetBodyPartConnections(BodyPart part, [NotNullWhen(true)] out List<BodyPart> result)
+        private bool TryGetBodyPartConnections(IBodyPart part, [NotNullWhen(true)] out List<IBodyPart> result)
         {
             result = null!;
 
@@ -491,11 +477,11 @@ namespace Content.Server.GameObjects.Components.Body
         }
 
         /// <summary>
-        ///     Grabs all <see cref="BodyPart"/> of the given type in this body.
+        ///     Grabs all <see cref="IBodyPart"/> of the given type in this body.
         /// </summary>
-        public List<BodyPart> GetBodyPartsOfType(BodyPartType type)
+        public List<IBodyPart> GetBodyPartsOfType(BodyPartType type)
         {
-            var toReturn = new List<BodyPart>();
+            var toReturn = new List<IBodyPart>();
 
             foreach (var part in Parts.Values)
             {
@@ -508,32 +494,6 @@ namespace Content.Server.GameObjects.Components.Body
             return toReturn;
         }
 
-        /// <summary>
-        ///     Installs the given <see cref="BodyPart"/> into the given slot.
-        /// </summary>
-        /// <returns>True if successful, false otherwise.</returns>
-        public bool InstallBodyPart(BodyPart part, string slotName)
-        {
-            DebugTools.AssertNotNull(part);
-
-            // Make sure the given slot exists
-            if (!SlotExists(slotName))
-            {
-                return false;
-            }
-
-            // And that nothing is in it
-            if (TryGetBodyPart(slotName, out _))
-            {
-                return false;
-            }
-
-            AddBodyPart(part, slotName); // TODO: Sort this duplicate out
-            OnBodyChanged();
-
-            return true;
-        }
-
         /// <summary>
         ///     Installs the given <see cref="DroppedBodyPartComponent"/> into the
         ///     given slot, deleting the <see cref="IEntity"/> afterwards.
@@ -543,7 +503,7 @@ namespace Content.Server.GameObjects.Components.Body
         {
             DebugTools.AssertNotNull(part);
 
-            if (!InstallBodyPart(part.ContainedBodyPart, slotName))
+            if (!TryAddPart(slotName, part.ContainedBodyPart))
             {
                 return false;
             }
@@ -553,15 +513,15 @@ namespace Content.Server.GameObjects.Components.Body
         }
 
         /// <summary>
-        ///     Disconnects the given <see cref="BodyPart"/> reference, potentially
-        ///     dropping other <see cref="BodyPart">BodyParts</see> if they were hanging
+        ///     Disconnects the given <see cref="IBodyPart"/> reference, potentially
+        ///     dropping other <see cref="IBodyPart">BodyParts</see> if they were hanging
         ///     off of it.
         /// </summary>
         /// <returns>
         ///     The <see cref="IEntity"/> representing the dropped
-        ///     <see cref="BodyPart"/>, or null if none was dropped.
+        ///     <see cref="IBodyPart"/>, or null if none was dropped.
         /// </returns>
-        public IEntity? DropPart(BodyPart part)
+        public IEntity? DropPart(IBodyPart part)
         {
             DebugTools.AssertNotNull(part);
 
@@ -595,36 +555,18 @@ namespace Content.Server.GameObjects.Components.Body
         }
 
         /// <summary>
-        ///     Disconnects the given <see cref="BodyPart"/> reference, potentially
-        ///     dropping other <see cref="BodyPart">BodyParts</see> if they were hanging
+        ///     Disconnects the given <see cref="IBodyPart"/> reference, potentially
+        ///     dropping other <see cref="IBodyPart">BodyParts</see> if they were hanging
         ///     off of it.
         /// </summary>
-        public void DisconnectBodyPart(BodyPart part, bool dropEntity)
+        public void DisconnectBodyPart(IBodyPart part, bool dropEntity)
         {
             DebugTools.AssertNotNull(part);
 
-            if (!_parts.ContainsValue(part))
-            {
-                return;
-            }
+            var slotName = _parts.FirstOrDefault(x => x.Value == part).Key;
+            if (string.IsNullOrEmpty(slotName)) return;
+            DisconnectBodyPart(slotName, dropEntity);
 
-            var slotName = Parts.FirstOrDefault(x => x.Value == part).Key;
-            RemoveBodyPart(slotName, dropEntity);
-
-            // Call disconnect on all limbs that were hanging off this limb
-            if (TryGetBodyPartConnections(slotName, out List<string> connections))
-            {
-                // TODO: Optimize
-                foreach (var connectionName in connections)
-                {
-                    if (TryGetBodyPart(connectionName, out var result) && !ConnectedToCenterPart(result))
-                    {
-                        DisconnectBodyPart(connectionName, dropEntity);
-                    }
-                }
-            }
-
-            OnBodyChanged();
         }
 
         /// <summary>
@@ -639,12 +581,7 @@ namespace Content.Server.GameObjects.Components.Body
         {
             DebugTools.AssertNotNull(slotName);
 
-            if (!TryGetBodyPart(slotName, out var part))
-            {
-                return;
-            }
-
-            if (part == null)
+            if (!HasPart(slotName))
             {
                 return;
             }
@@ -665,27 +602,47 @@ namespace Content.Server.GameObjects.Components.Body
             OnBodyChanged();
         }
 
-        private void AddBodyPart(BodyPart part, string slotName)
+        public bool TryAddPart(string slot, IBodyPart part, bool force = false)
         {
             DebugTools.AssertNotNull(part);
-            DebugTools.AssertNotNull(slotName);
+            DebugTools.AssertNotNull(slot);
 
-            _parts.Add(slotName, part);
+            // Make sure the given slot exists
+            if (!force)
+            {
+                if (!SlotExists(slot))
+                {
+                    return false;
+                }
+
+                // And that nothing is in it
+                if (!_parts.TryAdd(slot, part))
+                {
+                    return false;
+                }
+            }
+            else
+            {
+                _parts[slot] = part;
+            }
 
             part.Body = this;
 
-            var argsAdded = new BodyPartAddedEventArgs(part, slotName);
+            var argsAdded = new BodyPartAddedEventArgs(part, slot);
 
             foreach (var component in Owner.GetAllComponents<IBodyPartAdded>().ToArray())
             {
                 component.BodyPartAdded(argsAdded);
             }
 
-            if (!Template.Layers.TryGetValue(slotName, out var partMap) ||
+            // TODO: Sort this duplicate out
+            OnBodyChanged();
+
+            if (!Template.Layers.TryGetValue(slot, out var partMap) ||
                 !_reflectionManager.TryParseEnumReference(partMap, out var partEnum))
             {
                 Logger.Warning($"Template {Template.Name} has an invalid RSI map key {partMap} for body part {part.Name}.");
-                return;
+                return false;
             }
 
             part.RSIMap = partEnum;
@@ -711,6 +668,13 @@ namespace Content.Server.GameObjects.Components.Body
 
                 SendNetworkMessage(mechanismMessage);
             }
+
+            return true;
+        }
+
+        public bool HasPart(string slot)
+        {
+            return _parts.ContainsKey(slot);
         }
 
         /// <summary>
@@ -719,7 +683,7 @@ namespace Content.Server.GameObjects.Components.Body
         /// </summary>
         /// <param name="slotName">The slot to remove it from.</param>
         /// <param name="drop">
-        ///     Whether or not to drop the removed <see cref="BodyPart"/>.
+        ///     Whether or not to drop the removed <see cref="IBodyPart"/>.
         /// </param>
         /// <returns></returns>
         private bool RemoveBodyPart(string slotName, bool drop)
@@ -770,6 +734,21 @@ namespace Content.Server.GameObjects.Components.Body
                 SendNetworkMessage(mechanismMessage);
             }
 
+            if (CurrentDamageState == DamageState.Dead) return true;
+
+            // creadth: fall down if no legs
+            if (part.PartType == BodyPartType.Leg && Parts.Count(x => x.Value.PartType == BodyPartType.Leg) == 0)
+            {
+                EntitySystem.Get<StandingStateSystem>().Down(Owner);
+            }
+
+            // creadth: immediately kill entity if last vital part removed
+            if (part.IsVital && Parts.Count(x => x.Value.PartType == part.PartType) == 0)
+            {
+                CurrentDamageState = DamageState.Dead;
+                ForceHealthChangedEvent();
+            }
+
             return true;
         }
 
@@ -779,17 +758,20 @@ namespace Content.Server.GameObjects.Components.Body
         /// <param name="part">The part to remove from this body.</param>
         /// <param name="slotName">The slot that the part was in, if any.</param>
         /// <returns>True if <see cref="part"/> was removed, false otherwise.</returns>
-        private bool RemoveBodyPart(BodyPart part, [NotNullWhen(true)] out string slotName)
+        private bool RemoveBodyPart(IBodyPart part, [NotNullWhen(true)] out string? slotName)
         {
             DebugTools.AssertNotNull(part);
 
-            slotName = _parts.FirstOrDefault(pair => pair.Value == part).Key;
+            var pair = _parts.FirstOrDefault(kvPair => kvPair.Value == part);
 
-            if (slotName == null)
+            if (pair.Equals(default))
             {
+                slotName = null;
                 return false;
             }
 
+            slotName = pair.Key;
+
             return RemoveBodyPart(slotName, false);
         }
 
@@ -803,13 +785,13 @@ namespace Content.Server.GameObjects.Components.Body
 
             if (_networks.ContainsKey(network.GetType()))
             {
-                return false;
+                return true;
             }
 
             _networks.Add(network.GetType(), network);
             network.OnAdd(Owner);
 
-            return true;
+            return false;
         }
 
         /// <summary>
@@ -843,62 +825,21 @@ namespace Content.Server.GameObjects.Components.Body
             return EnsureNetwork(typeof(T));
         }
 
-        /// <summary>
-        ///     Attempts to add a <see cref="BodyNetwork"/> of the given name to
-        ///     this body.
-        /// </summary>
-        /// <returns>
-        ///     True if successful, false if there was an error
-        ///     (such as passing in an invalid type or a network of that type already
-        ///     existing).
-        /// </returns>
-        private bool EnsureNetwork(string networkName)
+        public void RemoveNetwork(Type networkType)
         {
-            DebugTools.AssertNotNull(networkName);
+            DebugTools.AssertNotNull(networkType);
 
-            var network = _bodyNetworkFactory.GetNetwork(networkName);
-            return EnsureNetwork(network);
-        }
-
-        /// <summary>
-        ///     Removes the <see cref="BodyNetwork"/> of the given type in this body,
-        ///     if there is one.
-        /// </summary>
-        /// <param name="type">The type of the network to remove.</param>
-        public void RemoveNetwork(Type type)
-        {
-            DebugTools.AssertNotNull(type);
-
-            if (_networks.Remove(type, out var network))
+            if (_networks.Remove(networkType, out var network))
             {
                 network.OnRemove();
             }
         }
 
-        /// <summary>
-        ///     Removes the <see cref="BodyNetwork"/> of the given type in this body,
-        ///     if one exists.
-        /// </summary>
-        /// <typeparam name="T">The type of the network to remove.</typeparam>
         public void RemoveNetwork<T>() where T : BodyNetwork
         {
             RemoveNetwork(typeof(T));
         }
 
-        /// <summary>
-        ///     Removes the <see cref="BodyNetwork"/> with the given name in this body,
-        ///     if there is one.
-        /// </summary>
-        private void RemoveNetwork(string networkName)
-        {
-            var type = _bodyNetworkFactory.GetNetwork(networkName).GetType();
-
-            if (_networks.Remove(type, out var network))
-            {
-                network.OnRemove();
-            }
-        }
-
         /// <summary>
         ///     Attempts to get the <see cref="BodyNetwork"/> of the given type in this body.
         /// </summary>
@@ -923,7 +864,7 @@ namespace Content.Server.GameObjects.Components.Body
         ///     a foot node from the given node. It can
         ///     only search through BodyParts with <see cref="ExtensionProperty"/>.
         /// </summary>
-        private static float DistanceToNearestFoot(BodyManagerComponent body, BodyPart source)
+        private static float DistanceToNearestFoot(BodyManagerComponent body, IBodyPart source)
         {
             if (source.HasProperty<FootProperty>() && source.TryGetProperty<ExtensionProperty>(out var property))
             {
@@ -933,7 +874,8 @@ namespace Content.Server.GameObjects.Components.Body
             return LookForFootRecursion(body, source, new List<BodyPart>());
         }
 
-        private static float LookForFootRecursion(BodyManagerComponent body, BodyPart current,
+        // TODO: Make this not static and not keep me up at night
+        private static float LookForFootRecursion(BodyManagerComponent body, IBodyPart current,
             ICollection<BodyPart> searchedParts)
         {
             if (!current.TryGetProperty<ExtensionProperty>(out var extProperty))

Content.Server/GameObjects/Components/Body/BodyScannerComponent.cs

@@ -56,7 +56,7 @@ namespace Content.Server.GameObjects.Components.Body
         /// <summary>
         ///     Copy BodyTemplate and BodyPart data into a common data class that the client can read.
         /// </summary>
-        private BodyScannerInterfaceState InterfaceState(BodyTemplate template, IReadOnlyDictionary<string, BodyPart> bodyParts)
+        private BodyScannerInterfaceState InterfaceState(BodyTemplate template, IReadOnlyDictionary<string, IBodyPart> bodyParts)
         {
             var partsData = new Dictionary<string, BodyScannerBodyPartData>();
 

Content.Server/GameObjects/Components/Body/DroppedBodyPartComponent.cs

@@ -1,18 +1,17 @@
 #nullable enable
 using System.Collections.Generic;
 using System.Linq;
-using Content.Shared.Interfaces;
 using Content.Shared.Interfaces.GameObjects.Components;
 using Content.Server.Body;
 using Content.Server.Utility;
 using Content.Shared.Body.Surgery;
+using Content.Shared.Interfaces;
 using Robust.Server.GameObjects;
 using Robust.Server.GameObjects.Components.UserInterface;
 using Robust.Server.Interfaces.GameObjects;
 using Robust.Server.Interfaces.Player;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Interfaces.GameObjects;
-using Robust.Shared.IoC;
 using Robust.Shared.Localization;
 using Robust.Shared.ViewVariables;
 
@@ -24,8 +23,6 @@ namespace Content.Server.GameObjects.Components.Body
     [RegisterComponent]
     public class DroppedBodyPartComponent : Component, IAfterInteract, IBodyPartContainer
     {
-        [Dependency] private readonly ISharedNotifyManager _sharedNotifyManager = default!;
-
         private readonly Dictionary<int, object> _optionsCache = new Dictionary<int, object>();
         private BodyManagerComponent? _bodyManagerComponentCache;
         private int _idHash;
@@ -101,7 +98,7 @@ namespace Content.Server.GameObjects.Components.Body
 
                 foreach (var connectedPart in parts)
                 {
-                    if (!connectedPart.CanAttachBodyPart(ContainedBodyPart))
+                    if (!connectedPart.CanAttachPart(ContainedBodyPart))
                     {
                         continue;
                     }
@@ -121,7 +118,7 @@ namespace Content.Server.GameObjects.Components.Body
             }
             else // If surgery cannot be performed, show message saying so.
             {
-                _sharedNotifyManager.PopupMessage(eventArgs.Target, eventArgs.User,
+                eventArgs.Target.PopupMessage(eventArgs.User,
                     Loc.GetString("You see no way to install {0:theName}.", Owner));
             }
         }
@@ -147,7 +144,7 @@ namespace Content.Server.GameObjects.Components.Body
             // TODO: sanity checks to see whether user is in range, user is still able-bodied, target is still the same, etc etc
             if (!_optionsCache.TryGetValue(key, out var targetObject))
             {
-                _sharedNotifyManager.PopupMessage(_bodyManagerComponentCache.Owner, _performerCache,
+                _bodyManagerComponentCache.Owner.PopupMessage(_performerCache,
                     Loc.GetString("You see no useful way to attach {0:theName} anymore.", Owner));
             }
 
@@ -163,10 +160,7 @@ namespace Content.Server.GameObjects.Components.Body
                 message = Loc.GetString("You can't attach it!");
             }
 
-            _sharedNotifyManager.PopupMessage(
-                _bodyManagerComponentCache.Owner,
-                _performerCache,
-                message);
+            _bodyManagerComponentCache.Owner.PopupMessage(_performerCache, message);
         }
 
         private void OpenSurgeryUI(IPlayerSession session)

Content.Server/GameObjects/Components/Body/DroppedMechanismComponent.cs

@@ -28,7 +28,6 @@ namespace Content.Server.GameObjects.Components.Body
     [RegisterComponent]
     public class DroppedMechanismComponent : Component, IAfterInteract
     {
-        [Dependency] private readonly ISharedNotifyManager _sharedNotifyManager = default!;
         [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
 
         public sealed override string Name => "DroppedMechanism";
@@ -41,7 +40,7 @@ namespace Content.Server.GameObjects.Components.Body
 
         private IEntity? _performerCache;
 
-        [ViewVariables] public Mechanism ContainedMechanism { get; private set; } = default!;
+        [ViewVariables] public IMechanism ContainedMechanism { get; private set; } = default!;
 
         [ViewVariables] private BoundUserInterface? UserInterface => Owner.GetUIOrNull(GenericSurgeryUiKey.Key);
 
@@ -67,8 +66,7 @@ namespace Content.Server.GameObjects.Components.Body
 
                 if (!droppedBodyPart.ContainedBodyPart.TryInstallDroppedMechanism(this))
                 {
-                    _sharedNotifyManager.PopupMessage(eventArgs.Target, eventArgs.User,
-                        Loc.GetString("You can't fit it in!"));
+                    eventArgs.Target.PopupMessage(eventArgs.User, Loc.GetString("You can't fit it in!"));
                 }
             }
         }
@@ -83,7 +81,7 @@ namespace Content.Server.GameObjects.Components.Body
             }
         }
 
-        public void InitializeDroppedMechanism(Mechanism data)
+        public void InitializeDroppedMechanism(IMechanism data)
         {
             ContainedMechanism = data;
             Owner.Name = Loc.GetString(ContainedMechanism.Name);
@@ -141,7 +139,7 @@ namespace Content.Server.GameObjects.Components.Body
             }
             else // If surgery cannot be performed, show message saying so.
             {
-                _sharedNotifyManager.PopupMessage(eventArgs.Target, eventArgs.User,
+                eventArgs.Target.PopupMessage(eventArgs.User,
                     Loc.GetString("You see no way to install the {0}.", Owner.Name));
             }
         }
@@ -167,7 +165,7 @@ namespace Content.Server.GameObjects.Components.Body
             // TODO: sanity checks to see whether user is in range, user is still able-bodied, target is still the same, etc etc
             if (!_optionsCache.TryGetValue(key, out var targetObject))
             {
-                _sharedNotifyManager.PopupMessage(_bodyManagerComponentCache.Owner, _performerCache,
+                _bodyManagerComponentCache.Owner.PopupMessage(_performerCache,
                     Loc.GetString("You see no useful way to use the {0} anymore.", Owner.Name));
                 return;
             }
@@ -177,10 +175,7 @@ namespace Content.Server.GameObjects.Components.Body
                 ? Loc.GetString("You jam the {0} inside {1:them}.", ContainedMechanism.Name, _performerCache)
                 : Loc.GetString("You can't fit it in!");
 
-            _sharedNotifyManager.PopupMessage(
-                _bodyManagerComponentCache.Owner,
-                _performerCache,
-                message);
+            _bodyManagerComponentCache.Owner.PopupMessage(_performerCache, message);
 
             // TODO: {1:theName}
         }

Content.Server/GameObjects/Components/Body/IBodyManagerComponent.cs

@@ -0,0 +1,67 @@
+using System;
+using Content.Server.Body;
+using Content.Server.Body.Network;
+using Content.Shared.GameObjects.Components.Body;
+
+namespace Content.Server.GameObjects.Components.Body
+{
+    // TODO: Merge with ISharedBodyManagerComponent
+    public interface IBodyManagerComponent : ISharedBodyManagerComponent
+    {
+        /// <summary>
+        ///     The <see cref="BodyTemplate"/> that this <see cref="BodyManagerComponent"/>
+        ///     is adhering to.
+        /// </summary>
+        public BodyTemplate Template { get; }
+
+        /// <summary>
+        ///     The <see cref="BodyPreset"/> that this <see cref="BodyManagerComponent"/>
+        ///     is adhering to.
+        /// </summary>
+        public BodyPreset Preset { get; }
+
+        /// <summary>
+        ///     Installs the given <see cref="IBodyPart"/> into the given slot.
+        /// </summary>
+        /// <returns>True if successful, false otherwise.</returns>
+        bool TryAddPart(string slot, IBodyPart part, bool force = false);
+
+        bool HasPart(string slot);
+
+        /// <summary>
+        ///     Ensures that this body has the specified network.
+        /// </summary>
+        /// <typeparam name="T">The type of the network to ensure.</typeparam>
+        /// <returns>
+        ///     True if the network already existed, false if it had to be created.
+        /// </returns>
+        bool EnsureNetwork<T>() where T : BodyNetwork;
+
+        /// <summary>
+        ///     Ensures that this body has the specified network.
+        /// </summary>
+        /// <param name="networkType">The type of the network to ensure.</param>
+        /// <returns>
+        ///     True if the network already existed, false if it had to be created.
+        /// </returns>
+        bool EnsureNetwork(Type networkType);
+
+        /// <summary>
+        ///     Removes the <see cref="BodyNetwork"/> of the given type in this body,
+        ///     if one exists.
+        /// </summary>
+        /// <typeparam name="T">The type of the network to remove.</typeparam>
+        void RemoveNetwork<T>() where T : BodyNetwork;
+
+        /// <summary>
+        ///     Removes the <see cref="BodyNetwork"/> of the given type in this body,
+        ///     if there is one.
+        /// </summary>
+        /// <param name="networkType">The type of the network to remove.</param>
+        void RemoveNetwork(Type networkType);
+
+        void PreMetabolism(float frameTime);
+
+        void PostMetabolism(float frameTime);
+    }
+}

Content.Server/GameObjects/Components/Body/SurgeryToolComponent.cs

@@ -16,7 +16,6 @@ using Robust.Server.Interfaces.GameObjects;
 using Robust.Server.Interfaces.Player;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Interfaces.GameObjects;
-using Robust.Shared.IoC;
 using Robust.Shared.Localization;
 using Robust.Shared.Log;
 using Robust.Shared.Serialization;
@@ -34,8 +33,6 @@ namespace Content.Server.GameObjects.Components.Body
     [RegisterComponent]
     public class SurgeryToolComponent : Component, ISurgeon, IAfterInteract
     {
-        [Dependency] private readonly ISharedNotifyManager _sharedNotifyManager = default!;
-
         public override string Name => "SurgeryTool";
         public override uint? NetID => ContentNetIDs.SURGERY;
 
@@ -131,7 +128,7 @@ namespace Content.Server.GameObjects.Components.Body
 
         public float BaseOperationTime { get => _baseOperateTime; set => _baseOperateTime = value; }
 
-        public void RequestMechanism(IEnumerable<Mechanism> options, ISurgeon.MechanismRequestCallback callback)
+        public void RequestMechanism(IEnumerable<IMechanism> options, ISurgeon.MechanismRequestCallback callback)
         {
             var toSend = new Dictionary<string, int>();
             foreach (var mechanism in options)
@@ -233,7 +230,7 @@ namespace Content.Server.GameObjects.Components.Body
 
         /// <summary>
         ///     Called after the client chooses from a list of possible
-        ///     <see cref="Mechanism"/> to choose from.
+        ///     <see cref="IMechanism"/> to choose from.
         /// </summary>
         private void HandleReceiveMechanism(int key)
         {
@@ -254,27 +251,13 @@ namespace Content.Server.GameObjects.Components.Body
 
         private void SendNoUsefulWayToUsePopup()
         {
-            if (_bodyManagerComponentCache == null)
-            {
-                return;
-            }
-
-            _sharedNotifyManager.PopupMessage(
-                _bodyManagerComponentCache.Owner,
-                _performerCache,
+            _bodyManagerComponentCache?.Owner.PopupMessage(_performerCache,
                 Loc.GetString("You see no useful way to use {0:theName}.", Owner));
         }
 
         private void SendNoUsefulWayToUseAnymorePopup()
         {
-            if (_bodyManagerComponentCache == null)
-            {
-                return;
-            }
-
-            _sharedNotifyManager.PopupMessage(
-                _bodyManagerComponentCache.Owner,
-                _performerCache,
+            _bodyManagerComponentCache?.Owner.PopupMessage(_performerCache,
                 Loc.GetString("You see no useful way to use {0:theName} anymore.", Owner));
         }
 

Content.Server/GameObjects/Components/Buckle/BuckleComponent.cs

@@ -3,16 +3,17 @@ using System;
 using System.Diagnostics.CodeAnalysis;
 using Content.Server.GameObjects.Components.GUI;
 using Content.Server.GameObjects.Components.Mobs;
+using Content.Server.GameObjects.Components.Mobs.State;
 using Content.Server.GameObjects.Components.Strap;
-using Content.Server.Interfaces;
-using Content.Server.Mobs;
-using Content.Server.Utility;
+using Content.Server.GameObjects.EntitySystems;
 using Content.Shared.GameObjects.Components.Buckle;
 using Content.Shared.GameObjects.Components.Mobs;
 using Content.Shared.GameObjects.Components.Strap;
 using Content.Shared.GameObjects.EntitySystems;
 using Content.Shared.GameObjects.Verbs;
+using Content.Shared.Interfaces;
 using Content.Shared.Interfaces.GameObjects.Components;
+using Content.Shared.Utility;
 using Robust.Server.GameObjects;
 using Robust.Server.GameObjects.EntitySystemMessages;
 using Robust.Server.GameObjects.EntitySystems;
@@ -37,7 +38,6 @@ namespace Content.Server.GameObjects.Components.Buckle
         [Dependency] private readonly IEntityManager _entityManager = default!;
         [Dependency] private readonly IEntitySystemManager _entitySystem = default!;
         [Dependency] private readonly IGameTiming _gameTiming = default!;
-        [Dependency] private readonly IServerNotifyManager _notifyManager = default!;
         [Dependency] private readonly IMapManager _mapManager = default!;
 
         private int _size;
@@ -112,10 +112,14 @@ namespace Content.Server.GameObjects.Components.Buckle
         {
             if (Owner.TryGetComponent(out ServerStatusEffectsComponent? status))
             {
-                status.ChangeStatusEffectIcon(StatusEffect.Buckled,
-                    Buckled
-                        ? BuckledTo!.BuckledIcon
-                        : "/Textures/Interface/StatusEffects/Buckle/unbuckled.png");
+                if (Buckled)
+                {
+                    status.ChangeStatusEffectIcon(StatusEffect.Buckled, BuckledTo!.BuckledIcon);
+                }
+                else
+                {
+                    status.RemoveStatusEffect(StatusEffect.Buckled);
+                }
             }
         }
 
@@ -136,11 +140,11 @@ namespace Content.Server.GameObjects.Components.Buckle
                     ownTransform.WorldRotation = strapTransform.WorldRotation;
                     break;
                 case StrapPosition.Stand:
-                    StandingStateHelper.Standing(Owner);
+                    EntitySystem.Get<StandingStateSystem>().Standing(Owner);
                     ownTransform.WorldRotation = strapTransform.WorldRotation;
                     break;
                 case StrapPosition.Down:
-                    StandingStateHelper.Down(Owner, force: true);
+                    EntitySystem.Get<StandingStateSystem>().Down(Owner, force: true);
                     ownTransform.WorldRotation = Angle.South;
                     break;
             }
@@ -158,7 +162,7 @@ namespace Content.Server.GameObjects.Components.Buckle
             }
         }
 
-        private bool CanBuckle(IEntity user, IEntity to, [MaybeNullWhen(false)] out StrapComponent strap)
+        private bool CanBuckle(IEntity? user, IEntity to, [MaybeNullWhen(false)] out StrapComponent strap)
         {
             strap = null;
 
@@ -169,32 +173,26 @@ namespace Content.Server.GameObjects.Components.Buckle
 
             if (!ActionBlockerSystem.CanInteract(user))
             {
-                _notifyManager.PopupMessage(user, user,
-                    Loc.GetString("You can't do that!"));
-
+                user.PopupMessage(Loc.GetString("You can't do that!"));
                 return false;
             }
 
             if (!to.TryGetComponent(out strap))
             {
-                _notifyManager.PopupMessage(Owner, user,
-                    Loc.GetString(Owner == user
-                        ? "You can't buckle yourself there!"
-                        : "You can't buckle {0:them} there!", Owner));
+                var message = Loc.GetString(Owner == user
+                    ? "You can't buckle yourself there!"
+                    : "You can't buckle {0:them} there!", Owner);
+                Owner.PopupMessage(user, message);
 
                 return false;
             }
 
-            var ownerPosition = Owner.Transform.MapPosition;
-            var strapPosition = strap.Owner.Transform.MapPosition;
-            var interaction = EntitySystem.Get<SharedInteractionSystem>();
             var component = strap;
             bool Ignored(IEntity entity) => entity == Owner || entity == user || entity == component.Owner;
 
-            if (!interaction.InRangeUnobstructed(ownerPosition, strapPosition, _range, predicate: Ignored))
+            if (!Owner.InRangeUnobstructed(strap, _range, predicate: Ignored, popup: true))
             {
-                _notifyManager.PopupMessage(strap.Owner, user,
-                    Loc.GetString("You can't reach there!"));
+                strap.Owner.PopupMessage(user, Loc.GetString("You can't reach there!"));
 
                 return false;
             }
@@ -206,7 +204,7 @@ namespace Content.Server.GameObjects.Components.Buckle
                 if (!ContainerHelpers.TryGetContainer(strap.Owner, out var strapContainer) ||
                     ownerContainer != strapContainer)
                 {
-                    _notifyManager.PopupMessage(strap.Owner, user, Loc.GetString("You can't reach there!"));
+                    strap.Owner.PopupMessage(user, Loc.GetString("You can't reach there!"));
 
                     return false;
                 }
@@ -214,18 +212,16 @@ namespace Content.Server.GameObjects.Components.Buckle
 
             if (!user.HasComponent<HandsComponent>())
             {
-                _notifyManager.PopupMessage(user, user,
-                    Loc.GetString("You don't have hands!"));
-
+                user.PopupMessage(Loc.GetString("You don't have hands!"));
                 return false;
             }
 
             if (Buckled)
             {
-                _notifyManager.PopupMessage(Owner, user,
-                    Loc.GetString(Owner == user
-                        ? "You are already buckled in!"
-                        : "{0:They} are already buckled in!", Owner));
+                var message = Loc.GetString(Owner == user
+                    ? "You are already buckled in!"
+                    : "{0:They} are already buckled in!", Owner);
+                Owner.PopupMessage(user, message);
 
                 return false;
             }
@@ -235,10 +231,10 @@ namespace Content.Server.GameObjects.Components.Buckle
             {
                 if (parent == user.Transform)
                 {
-                    _notifyManager.PopupMessage(Owner, user,
-                        Loc.GetString(Owner == user
-                            ? "You can't buckle yourself there!"
-                            : "You can't buckle {0:them} there!", Owner));
+                    var message = Loc.GetString(Owner == user
+                        ? "You can't buckle yourself there!"
+                        : "You can't buckle {0:them} there!", Owner);
+                    Owner.PopupMessage(user, message);
 
                     return false;
                 }
@@ -248,10 +244,10 @@ namespace Content.Server.GameObjects.Components.Buckle
 
             if (!strap.HasSpace(this))
             {
-                _notifyManager.PopupMessage(Owner, user,
-                    Loc.GetString(Owner == user
-                        ? "You can't fit there!"
-                        : "{0:They} can't fit there!", Owner));
+                var message = Loc.GetString(Owner == user
+                    ? "You can't fit there!"
+                    : "{0:They} can't fit there!", Owner);
+                Owner.PopupMessage(user, message);
 
                 return false;
             }
@@ -282,10 +278,10 @@ namespace Content.Server.GameObjects.Components.Buckle
 
             if (!strap.TryAdd(this))
             {
-                _notifyManager.PopupMessage(Owner, user,
-                    Loc.GetString(Owner == user
-                        ? "You can't buckle yourself there!"
-                        : "You can't buckle {0:them} there!", Owner));
+                var message = Loc.GetString(Owner == user
+                    ? "You can't buckle yourself there!"
+                    : "You can't buckle {0:them} there!", Owner);
+                Owner.PopupMessage(user, message);
                 return false;
             }
 
@@ -336,14 +332,11 @@ namespace Content.Server.GameObjects.Components.Buckle
 
                 if (!ActionBlockerSystem.CanInteract(user))
                 {
-                    _notifyManager.PopupMessage(user, user,
-                        Loc.GetString("You can't do that!"));
+                    user.PopupMessage(Loc.GetString("You can't do that!"));
                     return false;
                 }
 
-                var strapPosition = Owner.Transform.MapPosition;
-
-                if (!InteractionChecks.InRangeUnobstructed(user, strapPosition, _range))
+                if (!user.InRangeUnobstructed(oldBuckledTo, _range, popup: true))
                 {
                     return false;
                 }
@@ -364,11 +357,11 @@ namespace Content.Server.GameObjects.Components.Buckle
 
             if (Owner.TryGetComponent(out StunnableComponent? stunnable) && stunnable.KnockedDown)
             {
-                StandingStateHelper.Down(Owner);
+                EntitySystem.Get<StandingStateSystem>().Down(Owner);
             }
             else
             {
-                StandingStateHelper.Standing(Owner);
+                EntitySystem.Get<StandingStateSystem>().Standing(Owner);
             }
 
             if (Owner.TryGetComponent(out MobStateManagerComponent? stateManager))

Content.Server/GameObjects/Components/Chemistry/ChemMasterComponent.cs

@@ -7,13 +7,14 @@ using Content.Server.GameObjects.Components.GUI;
 using Content.Server.GameObjects.Components.Items.Storage;
 using Content.Server.GameObjects.Components.Power.ApcNetComponents;
 using Content.Server.GameObjects.EntitySystems;
-using Content.Server.Interfaces;
 using Content.Server.Interfaces.GameObjects.Components.Items;
 using Content.Server.Utility;
 using Content.Shared.Chemistry;
 using Content.Shared.GameObjects.Components.Chemistry.ChemMaster;
 using Content.Shared.GameObjects.EntitySystems;
+using Content.Shared.Interfaces;
 using Content.Shared.Interfaces.GameObjects.Components;
+using Content.Shared.Utility;
 using Robust.Server.GameObjects.Components.Container;
 using Robust.Server.GameObjects.Components.UserInterface;
 using Robust.Server.GameObjects.EntitySystems;
@@ -22,11 +23,7 @@ using Robust.Shared.Audio;
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
-using Robust.Shared.Interfaces.Random;
-using Robust.Shared.IoC;
 using Robust.Shared.Localization;
-using Robust.Shared.Maths;
-using Robust.Shared.Random;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
 
@@ -43,8 +40,6 @@ namespace Content.Server.GameObjects.Components.Chemistry
     [ComponentReference(typeof(IInteractUsing))]
     public class ChemMasterComponent : SharedChemMasterComponent, IActivate, IInteractUsing, ISolutionChange
     {
-        [Dependency] private readonly IServerNotifyManager _notifyManager = default!;
-
         [ViewVariables] private ContainerSlot _beakerContainer = default!;
         [ViewVariables] private string _packPrototypeId = "";
 
@@ -272,8 +267,6 @@ namespace Content.Server.GameObjects.Components.Chemistry
 
         private void TryCreatePackage(IEntity user, UiAction action, int pillAmount, int bottleAmount)
         {
-            var random = IoCManager.Resolve<IRobustRandom>();
-
             if (BufferSolution.CurrentVolume == 0)
                 return;
 
@@ -302,15 +295,12 @@ namespace Content.Server.GameObjects.Components.Chemistry
                             hands.PutInHand(item);
                             continue;
                         }
-
                     }
 
                     //Put it on the floor
                     bottle.Transform.GridPosition = user.Transform.GridPosition;
                     //Give it an offset
-                    var x_negative = random.Prob(0.5f) ? -1 : 1;
-                    var y_negative = random.Prob(0.5f) ? -1 : 1;
-                    bottle.Transform.LocalPosition += new Vector2(random.NextFloat() * 0.2f * x_negative, random.NextFloat() * 0.2f * y_negative);
+                    bottle.RandomOffset(0.2f);
                 }
 
             }
@@ -345,9 +335,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
                     //Put it on the floor
                     pill.Transform.GridPosition = user.Transform.GridPosition;
                     //Give it an offset
-                    var x_negative = random.Prob(0.5f) ? -1 : 1;
-                    var y_negative = random.Prob(0.5f) ? -1 : 1;
-                    pill.Transform.LocalPosition += new Vector2(random.NextFloat() * 0.2f * x_negative, random.NextFloat() * 0.2f * y_negative);
+                    pill.RandomOffset(0.2f);
                 }
             }
 
@@ -367,8 +355,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
 
             if (!args.User.TryGetComponent(out IHandsComponent? hands))
             {
-                _notifyManager.PopupMessage(Owner.Transform.GridPosition, args.User,
-                    Loc.GetString("You have no hands."));
+                Owner.PopupMessage(args.User, Loc.GetString("You have no hands."));
                 return;
             }
 
@@ -390,15 +377,13 @@ namespace Content.Server.GameObjects.Components.Chemistry
         {
             if (!args.User.TryGetComponent(out IHandsComponent? hands))
             {
-                _notifyManager.PopupMessage(Owner.Transform.GridPosition, args.User,
-                    Loc.GetString("You have no hands."));
+                Owner.PopupMessage(args.User, Loc.GetString("You have no hands."));
                 return true;
             }
 
             if (hands.GetActiveHand == null)
             {
-                _notifyManager.PopupMessage(Owner.Transform.GridPosition, args.User,
-                    Loc.GetString("You have nothing on your hand."));
+                Owner.PopupMessage(args.User, Loc.GetString("You have nothing on your hand."));
                 return false;
             }
 
@@ -407,14 +392,12 @@ namespace Content.Server.GameObjects.Components.Chemistry
             {
                 if (HasBeaker)
                 {
-                    _notifyManager.PopupMessage(Owner.Transform.GridPosition, args.User,
-                        Loc.GetString("This ChemMaster already has a container in it."));
+                    Owner.PopupMessage(args.User, Loc.GetString("This ChemMaster already has a container in it."));
                 }
                 else if ((solution.Capabilities & SolutionCaps.FitsInDispenser) == 0) //Close enough to a chem master...
                 {
                     //If it can't fit in the chem master, don't put it in. For example, buckets and mop buckets can't fit.
-                    _notifyManager.PopupMessage(Owner.Transform.GridPosition, args.User,
-                        Loc.GetString("That can't fit in the ChemMaster."));
+                    Owner.PopupMessage(args.User, Loc.GetString("That can't fit in the ChemMaster."));
                 }
                 else
                 {
@@ -424,8 +407,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
             }
             else
             {
-                _notifyManager.PopupMessage(Owner.Transform.GridPosition, args.User,
-                    Loc.GetString("You can't put this in the ChemMaster."));
+                Owner.PopupMessage(args.User, Loc.GetString("You can't put this in the ChemMaster."));
             }
 
             return true;
@@ -435,7 +417,6 @@ namespace Content.Server.GameObjects.Components.Chemistry
 
         private void ClickSound()
         {
-
             EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Machines/machine_switch.ogg", Owner, AudioParams.Default.WithVolume(-2f));
         }
     }

Content.Server/GameObjects/Components/Chemistry/InjectorComponent.cs

@@ -1,14 +1,13 @@
 #nullable enable
 using System;
 using Content.Server.GameObjects.Components.Body.Circulatory;
-using Content.Server.Interfaces;
-using Content.Server.Utility;
 using Content.Shared.Chemistry;
 using Content.Shared.GameObjects.Components.Chemistry;
+using Content.Shared.Interfaces;
 using Content.Shared.Interfaces.GameObjects.Components;
+using Content.Shared.Utility;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Interfaces.GameObjects;
-using Robust.Shared.IoC;
 using Robust.Shared.Localization;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
@@ -23,8 +22,6 @@ namespace Content.Server.GameObjects.Components.Chemistry
     [RegisterComponent]
     public class InjectorComponent : SharedInjectorComponent, IAfterInteract, IUse
     {
-        [Dependency] private readonly IServerNotifyManager _notifyManager = default!;
-
         /// <summary>
         /// Whether or not the injector is able to draw from containers or if it's a single use
         /// device that can only inject.
@@ -100,7 +97,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
                     throw new ArgumentOutOfRangeException();
             }
 
-            _notifyManager.PopupMessage(Owner, user, Loc.GetString(msg));
+            Owner.PopupMessage(user, Loc.GetString(msg));
 
             Dirty();
         }
@@ -111,7 +108,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
         /// <param name="eventArgs"></param>
         void IAfterInteract.AfterInteract(AfterInteractEventArgs eventArgs)
         {
-            if (!InteractionChecks.InRangeUnobstructed(eventArgs)) return;
+            if (!eventArgs.InRangeUnobstructed(ignoreInsideBlocker: true, popup: true)) return;
 
             //Make sure we have the attacking entity
             if (eventArgs.Target == null || !Owner.TryGetComponent(out SolutionComponent? solution) || !solution.Injector)
@@ -165,8 +162,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
             var realTransferAmount = ReagentUnit.Min(_transferAmount, targetBloodstream.EmptyVolume);
             if (realTransferAmount <= 0)
             {
-                _notifyManager.PopupMessage(Owner.Transform.GridPosition, user,
-                    Loc.GetString("Container full."));
+                Owner.PopupMessage(user, Loc.GetString("Container full."));
                 return;
             }
 
@@ -177,8 +173,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
                 return;
             }
 
-            _notifyManager.PopupMessage(Owner.Transform.GridPosition, user,
-                Loc.GetString("Injected {0}u", removedSolution.TotalVolume));
+            Owner.PopupMessage(user, Loc.GetString("Injected {0}u", removedSolution.TotalVolume));
             Dirty();
         }
 
@@ -194,8 +189,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
             var realTransferAmount = ReagentUnit.Min(_transferAmount, targetSolution.EmptyVolume);
             if (realTransferAmount <= 0)
             {
-                _notifyManager.PopupMessage(Owner.Transform.GridPosition, user,
-                    Loc.GetString("Container full."));
+                Owner.PopupMessage(user, Loc.GetString("Container full."));
                 return;
             }
 
@@ -206,8 +200,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
                 return;
             }
 
-            _notifyManager.PopupMessage(Owner.Transform.GridPosition, user,
-                Loc.GetString("Injected {0}u", removedSolution.TotalVolume));
+            Owner.PopupMessage(user, Loc.GetString("Injected {0}u", removedSolution.TotalVolume));
             Dirty();
         }
 
@@ -223,8 +216,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
             var realTransferAmount = ReagentUnit.Min(_transferAmount, targetSolution.CurrentVolume);
             if (realTransferAmount <= 0)
             {
-                _notifyManager.PopupMessage(Owner.Transform.GridPosition, user,
-                    Loc.GetString("Container empty"));
+                Owner.PopupMessage(user, Loc.GetString("Container empty"));
                 return;
             }
 
@@ -235,8 +227,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
                 return;
             }
 
-            _notifyManager.PopupMessage(Owner.Transform.GridPosition, user,
-                Loc.GetString("Drew {0}u", removedSolution.TotalVolume));
+            Owner.PopupMessage(user, Loc.GetString("Drew {0}u", removedSolution.TotalVolume));
             Dirty();
         }
 

Content.Server/GameObjects/Components/Chemistry/PillComponent.cs

@@ -1,10 +1,10 @@
 using Content.Server.GameObjects.Components.Body.Digestive;
 using Content.Server.GameObjects.Components.Nutrition;
 using Content.Server.GameObjects.Components.Utensil;
-using Content.Server.Utility;
 using Content.Shared.Chemistry;
 using Content.Shared.Interfaces;
 using Content.Shared.Interfaces.GameObjects.Components;
+using Content.Shared.Utility;
 using Robust.Server.GameObjects.EntitySystems;
 using Robust.Shared.Audio;
 using Robust.Shared.GameObjects;
@@ -46,8 +46,6 @@ namespace Content.Server.GameObjects.Components.Chemistry
         {
             base.Initialize();
             _contents = Owner.GetComponent<SolutionComponent>();
-            _transferAmount = _contents.CurrentVolume;
-
         }
 
         bool IUse.UseEntity(UseEntityEventArgs eventArgs)
@@ -80,7 +78,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
                 return false;
             }
 
-            if (!InteractionChecks.InRangeUnobstructed(user, trueTarget.Transform.MapPosition))
+            if (!user.InRangeUnobstructed(trueTarget, popup: true))
             {
                 return false;
             }

Content.Server/GameObjects/Components/Chemistry/PourableComponent.cs

@@ -1,9 +1,8 @@
 using System.Threading.Tasks;
-using Content.Server.Interfaces;
 using Content.Shared.Chemistry;
+using Content.Shared.Interfaces;
 using Content.Shared.Interfaces.GameObjects.Components;
 using Robust.Shared.GameObjects;
-using Robust.Shared.IoC;
 using Robust.Shared.Localization;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
@@ -19,8 +18,6 @@ namespace Content.Server.GameObjects.Components.Chemistry
     [RegisterComponent]
     class PourableComponent : Component, IInteractUsing
     {
-        [Dependency] private readonly IServerNotifyManager _notifyManager = default!;
-
         public override string Name => "Pourable";
 
         private ReagentUnit _transferAmount;
@@ -87,8 +84,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
             var realTransferAmount = ReagentUnit.Min(fromPourable.TransferAmount, toSolution.EmptyVolume);
             if (realTransferAmount <= 0) //Special message if container is full
             {
-                _notifyManager.PopupMessage(Owner.Transform.GridPosition, eventArgs.User,
-                    Loc.GetString("Container is full"));
+                Owner.PopupMessage(eventArgs.User, Loc.GetString("Container is full"));
                 return false;
             }
 
@@ -97,8 +93,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
             if (!toSolution.TryAddSolution(removedSolution))
                 return false;
 
-            _notifyManager.PopupMessage(Owner.Transform.GridPosition, eventArgs.User,
-                Loc.GetString("Transferred {0}u", removedSolution.TotalVolume));
+            Owner.PopupMessage(eventArgs.User, Loc.GetString("Transferred {0}u", removedSolution.TotalVolume));
 
             return true;
         }

Content.Server/GameObjects/Components/Chemistry/ReagentDispenserComponent.cs

@@ -6,12 +6,12 @@ using Content.Server.GameObjects.Components.GUI;
 using Content.Server.GameObjects.Components.Items.Storage;
 using Content.Server.GameObjects.Components.Power.ApcNetComponents;
 using Content.Server.GameObjects.EntitySystems;
-using Content.Server.Interfaces;
 using Content.Server.Interfaces.GameObjects.Components.Items;
 using Content.Server.Utility;
 using Content.Shared.Chemistry;
 using Content.Shared.GameObjects.Components.Chemistry.ReagentDispenser;
 using Content.Shared.GameObjects.EntitySystems;
+using Content.Shared.Interfaces;
 using Content.Shared.Interfaces.GameObjects.Components;
 using Robust.Server.GameObjects.Components.Container;
 using Robust.Server.GameObjects.Components.UserInterface;
@@ -40,7 +40,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
     [ComponentReference(typeof(IInteractUsing))]
     public class ReagentDispenserComponent : SharedReagentDispenserComponent, IActivate, IInteractUsing, ISolutionChange
     {
-        [Dependency] private readonly IServerNotifyManager _notifyManager = default!;
+        [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
 
         [ViewVariables] private ContainerSlot _beakerContainer = default!;
         [ViewVariables] private string _packPrototypeId = "";
@@ -99,8 +99,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
         {
             if (string.IsNullOrEmpty(_packPrototypeId)) return;
 
-            var prototypeManager = IoCManager.Resolve<IPrototypeManager>();
-            if (!prototypeManager.TryIndex(_packPrototypeId, out ReagentDispenserInventoryPrototype packPrototype))
+            if (!_prototypeManager.TryIndex(_packPrototypeId, out ReagentDispenserInventoryPrototype packPrototype))
             {
                 return;
             }
@@ -280,8 +279,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
 
             if (!args.User.TryGetComponent(out IHandsComponent? hands))
             {
-                _notifyManager.PopupMessage(Owner.Transform.GridPosition, args.User,
-                    Loc.GetString("You have no hands."));
+                Owner.PopupMessage(args.User, Loc.GetString("You have no hands."));
                 return;
             }
 
@@ -303,15 +301,13 @@ namespace Content.Server.GameObjects.Components.Chemistry
         {
             if (!args.User.TryGetComponent(out IHandsComponent? hands))
             {
-                _notifyManager.PopupMessage(Owner.Transform.GridPosition, args.User,
-                    Loc.GetString("You have no hands."));
+                Owner.PopupMessage(args.User, Loc.GetString("You have no hands."));
                 return true;
             }
 
             if (hands.GetActiveHand == null)
             {
-                _notifyManager.PopupMessage(Owner.Transform.GridPosition, args.User,
-                    Loc.GetString("You have nothing on your hand."));
+                Owner.PopupMessage(args.User, Loc.GetString("You have nothing on your hand."));
                 return false;
             }
 
@@ -320,14 +316,12 @@ namespace Content.Server.GameObjects.Components.Chemistry
             {
                 if (HasBeaker)
                 {
-                    _notifyManager.PopupMessage(Owner.Transform.GridPosition, args.User,
-                        Loc.GetString("This dispenser already has a container in it."));
+                    Owner.PopupMessage(args.User, Loc.GetString("This dispenser already has a container in it."));
                 }
                 else if ((solution.Capabilities & SolutionCaps.FitsInDispenser) == 0)
                 {
                     //If it can't fit in the dispenser, don't put it in. For example, buckets and mop buckets can't fit.
-                    _notifyManager.PopupMessage(Owner.Transform.GridPosition, args.User,
-                        Loc.GetString("That can't fit in the dispenser."));
+                    Owner.PopupMessage(args.User, Loc.GetString("That can't fit in the dispenser."));
                 }
                 else
                 {
@@ -337,8 +331,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
             }
             else
             {
-                _notifyManager.PopupMessage(Owner.Transform.GridPosition, args.User,
-                    Loc.GetString("You can't put this in the dispenser."));
+                Owner.PopupMessage(args.User, Loc.GetString("You can't put this in the dispenser."));
             }
 
             return true;
@@ -348,11 +341,8 @@ namespace Content.Server.GameObjects.Components.Chemistry
 
         private void ClickSound()
         {
-
             EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Machines/machine_switch.ogg", Owner, AudioParams.Default.WithVolume(-2f));
 
         }
-
-
     }
 }

Content.Server/GameObjects/Components/Chemistry/SolutionComponent.cs

@@ -234,7 +234,10 @@ namespace Content.Server.GameObjects.Components.Chemistry
                     var heldEntityName = hands.GetActiveHand.Owner?.Prototype?.Name ?? "<Item>";
                     var myName = component.Owner.Prototype?.Name ?? "<Item>";
 
-                    data.Text= $"Transfer liquid from [{heldEntityName}] to [{myName}].";
+                    var locHeldEntityName = Loc.GetString(heldEntityName);
+                    var locMyName = Loc.GetString(myName);
+
+                    data.Text = Loc.GetString("Transfer liquid from [{0}] to [{1}].", locHeldEntityName, locMyName);
                     return;
                 }
 
@@ -334,7 +337,10 @@ namespace Content.Server.GameObjects.Components.Chemistry
                     var heldEntityName = hands.GetActiveHand.Owner?.Prototype?.Name ?? "<Item>";
                     var myName = component.Owner.Prototype?.Name ?? "<Item>";
 
-                    data.Text = $"Transfer liquid from [{myName}] to [{heldEntityName}].";
+                    var locHeldEntityName = Loc.GetString(heldEntityName);
+                    var locMyName = Loc.GetString(myName);
+
+                    data.Text = Loc.GetString("Transfer liquid from [{0}] to [{1}].", locMyName, locHeldEntityName);
                     return;
                 }
 

Content.Server/GameObjects/Components/Chemistry/VaporComponent.cs

@@ -76,7 +76,7 @@ namespace Content.Server.GameObjects.Components.Chemistry
                 foreach (var tile in tiles)
                 {
                     var pos = tile.GridIndices.ToGridCoordinates(_mapManager, tile.GridIndex);
-                    SpillHelper.SpillAt(pos, contents.SplitSolution(amount), "PuddleSmear", false); //make non PuddleSmear?
+                    contents.SplitSolution(amount).SpillAt(pos, "PuddleSmear", false); // TODO: Make non PuddleSmear?
                 }
             }
 

Content.Server/GameObjects/Components/Conveyor/ConveyorComponent.cs

@@ -10,6 +10,7 @@ using Content.Shared.GameObjects.Components.Conveyor;
 using Content.Shared.GameObjects.Components.Interactable;
 using Content.Shared.Interfaces.GameObjects.Components;
 using Content.Shared.Physics;
+using Content.Shared.Utility;
 using Robust.Server.GameObjects;
 using Robust.Shared.Containers;
 using Robust.Shared.GameObjects;
@@ -170,7 +171,7 @@ namespace Content.Server.GameObjects.Components.Conveyor
 
                 Owner.AddComponent<ItemComponent>();
                 _group?.RemoveConveyor(this);
-                Owner.Transform.WorldPosition += (_random.NextFloat() * 0.4f - 0.2f, _random.NextFloat() * 0.4f - 0.2f);
+                Owner.RandomOffset(0.2f);
 
                 return true;
             }

Content.Server/GameObjects/Components/Conveyor/ConveyorSwitchComponent.cs

@@ -81,7 +81,7 @@ namespace Content.Server.GameObjects.Components.Conveyor
             }
 
             _group.AddConveyor(conveyor);
-            user?.PopupMessage(user, Loc.GetString("Conveyor linked."));
+            user?.PopupMessage(Loc.GetString("Conveyor linked."));
         }
 
         /// <summary>

Content.Server/GameObjects/Components/Damage/DamageCommands.cs

@@ -0,0 +1,214 @@
+#nullable enable
+using System;
+using System.Diagnostics.CodeAnalysis;
+using Content.Server.GameObjects.Components.Atmos;
+using Content.Shared.GameObjects.Components.Damage;
+using Robust.Server.Interfaces.Console;
+using Robust.Server.Interfaces.Player;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.IoC;
+
+namespace Content.Server.GameObjects.Components.Damage
+{
+    public abstract class DamageFlagCommand : IClientCommand
+    {
+        public abstract string Command { get; }
+        public abstract string Description { get; }
+        public abstract string Help { get; }
+
+        public abstract void Execute(IConsoleShell shell, IPlayerSession? player, string[] args);
+
+        public bool TryGetEntity(
+            IConsoleShell shell,
+            IPlayerSession? player,
+            string[] args,
+            bool adding,
+            [NotNullWhen(true)] out IEntity? entity,
+            out DamageFlag flag,
+            [NotNullWhen(true)] out IDamageableComponent? damageable)
+        {
+            entity = null;
+            flag = DamageFlag.None;
+            damageable = null;
+
+            IEntity? parsedEntity;
+            DamageFlag parsedFlag;
+            IDamageableComponent? parsedDamageable;
+
+            switch (args.Length)
+            {
+                case 1:
+                {
+                    if (player == null)
+                    {
+                        shell.SendText(player, "An entity needs to be specified when the command isn't used by a player.");
+                        return false;
+                    }
+
+                    if (player.AttachedEntity == null)
+                    {
+                        shell.SendText(player, "An entity needs to be specified when you aren't attached to an entity.");
+                        return false;
+                    }
+
+                    if (!Enum.TryParse(args[0], true, out parsedFlag))
+                    {
+                        shell.SendText(player, $"{args[0]} is not a valid damage flag.");
+                        return false;
+                    }
+
+                    parsedEntity = player.AttachedEntity;
+                    flag = parsedFlag;
+                    break;
+                }
+                case 2:
+                {
+                    if (!EntityUid.TryParse(args[0], out var id))
+                    {
+                        shell.SendText(player, $"{args[0]} isn't a valid entity id.");
+                        return false;
+                    }
+
+                    var entityManager = IoCManager.Resolve<IEntityManager>();
+                    if (!entityManager.TryGetEntity(id, out parsedEntity))
+                    {
+                        shell.SendText(player, $"No entity found with id {id}.");
+                        return false;
+                    }
+
+                    if (!Enum.TryParse(args[1], true, out parsedFlag))
+                    {
+                        shell.SendText(player, $"{args[1]} is not a valid damage flag.");
+                        return false;
+                    }
+
+                    break;
+                }
+                default:
+                    shell.SendText(player, Help);
+                    return false;
+            }
+
+            if (!parsedEntity.TryGetComponent(out parsedDamageable))
+            {
+                shell.SendText(player, $"Entity {parsedEntity.Name} doesn't have a {nameof(IDamageableComponent)}");
+                return false;
+            }
+
+            if (parsedDamageable.HasFlag(parsedFlag) && adding)
+            {
+                shell.SendText(player, $"Entity {parsedEntity.Name} already has damage flag {parsedFlag}.");
+                return false;
+            }
+            else if (!parsedDamageable.HasFlag(parsedFlag) && !adding)
+            {
+                shell.SendText(player, $"Entity {parsedEntity.Name} doesn't have damage flag {parsedFlag}.");
+                return false;
+            }
+
+            entity = parsedEntity;
+            flag = parsedFlag;
+            damageable = parsedDamageable;
+
+            return true;
+        }
+    }
+
+    public class AddDamageFlagCommand : DamageFlagCommand
+    {
+        public override string Command => "adddamageflag";
+        public override string Description => "Adds a damage flag to your entity or another.";
+        public override string Help => $"Usage: {Command} <flag> / {Command} <entityUid> <flag>";
+
+        public override void Execute(IConsoleShell shell, IPlayerSession? player, string[] args)
+        {
+            if (!TryGetEntity(shell, player, args, true, out var entity, out var flag, out var damageable))
+            {
+                return;
+            }
+
+            damageable.AddFlag(flag);
+            shell.SendText(player, $"Added damage flag {flag} to entity {entity.Name}");
+        }
+    }
+
+    public class RemoveDamageFlagCommand : DamageFlagCommand
+    {
+        public override string Command => "removedamageflag";
+        public override string Description => "Removes a damage flag from your entity or another.";
+        public override string Help => $"Usage: {Command} <flag> / {Command} <entityUid> <flag>";
+
+        public override void Execute(IConsoleShell shell, IPlayerSession? player, string[] args)
+        {
+            if (!TryGetEntity(shell, player, args, false, out var entity, out var flag, out var damageable))
+            {
+                return;
+            }
+
+            damageable.RemoveFlag(flag);
+            shell.SendText(player, $"Removed damage flag {flag} from entity {entity.Name}");
+        }
+    }
+
+    public class GodModeCommand : IClientCommand
+    {
+        public string Command => "godmode";
+        public string Description => "Makes your entity or another invulnerable to almost anything. May have irreversible changes.";
+        public string Help => $"Usage: {Command} / {Command} <entityUid>";
+        public void Execute(IConsoleShell shell, IPlayerSession? player, string[] args)
+        {
+            IEntity entity;
+
+            switch (args.Length)
+            {
+                case 0:
+                    if (player == null)
+                    {
+                        shell.SendText(player, "An entity needs to be specified when the command isn't used by a player.");
+                        return;
+                    }
+
+                    if (player.AttachedEntity == null)
+                    {
+                        shell.SendText(player, "An entity needs to be specified when you aren't attached to an entity.");
+                        return;
+                    }
+
+                    entity = player.AttachedEntity;
+                    break;
+                case 1:
+                    if (!EntityUid.TryParse(args[0], out var id))
+                    {
+                        shell.SendText(player, $"{args[0]} isn't a valid entity id.");
+                        return;
+                    }
+
+                    var entityManager = IoCManager.Resolve<IEntityManager>();
+                    if (!entityManager.TryGetEntity(id, out var parsedEntity))
+                    {
+                        shell.SendText(player, $"No entity found with id {id}.");
+                        return;
+                    }
+
+                    entity = parsedEntity;
+                    break;
+                default:
+                    shell.SendText(player, Help);
+                    return;
+            }
+
+            if (entity.HasComponent<MovedByPressureComponent>())
+            {
+                entity.RemoveComponent<MovedByPressureComponent>();
+            }
+
+            if (entity.TryGetComponent(out IDamageableComponent? damageable))
+            {
+                damageable.AddFlag(DamageFlag.Invulnerable);
+            }
+
+            shell.SendText(player, $"Enabled godmode for entity {entity.Name}");
+        }
+    }
+}

Content.Server/GameObjects/Components/Disposal/DisposalHolderComponent.cs

@@ -63,7 +63,7 @@ namespace Content.Server.GameObjects.Components.Disposal
             }
 
             return entity.HasComponent<ItemComponent>() ||
-                   entity.HasComponent<IBodyManagerComponent>();
+                   entity.HasComponent<ISharedBodyManagerComponent>();
         }
 
         public bool TryInsert(IEntity entity)

Content.Server/GameObjects/Components/Disposal/DisposalRouterComponent.cs

@@ -1,5 +1,4 @@
 #nullable enable
-using Content.Server.Interfaces;
 using Content.Server.Interfaces.GameObjects.Components.Items;
 using Content.Shared.GameObjects.EntitySystems;
 using Content.Shared.Interfaces.GameObjects.Components;
@@ -11,13 +10,13 @@ using Robust.Shared.GameObjects;
 using Robust.Shared.GameObjects.Components;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
-using Robust.Shared.IoC;
 using Robust.Shared.Localization;
 using Robust.Shared.Maths;
 using Robust.Shared.ViewVariables;
 using System;
 using System.Collections.Generic;
 using Content.Server.Utility;
+using Content.Shared.Interfaces;
 using static Content.Shared.GameObjects.Components.Disposal.SharedDisposalRouterComponent;
 
 namespace Content.Server.GameObjects.Components.Disposal
@@ -27,7 +26,6 @@ namespace Content.Server.GameObjects.Components.Disposal
     [ComponentReference(typeof(IDisposalTubeComponent))]
     public class DisposalRouterComponent : DisposalJunctionComponent, IActivate
     {
-        [Dependency] private readonly IServerNotifyManager _notifyManager = default!;
         public override string Name => "DisposalRouter";
 
         [ViewVariables]
@@ -160,8 +158,7 @@ namespace Content.Server.GameObjects.Components.Disposal
 
             if (!args.User.TryGetComponent(out IHandsComponent? hands))
             {
-                _notifyManager.PopupMessage(Owner.Transform.GridPosition, args.User,
-                    Loc.GetString("You have no hands."));
+                Owner.PopupMessage(args.User, Loc.GetString("You have no hands."));
                 return;
             }
 

Content.Server/GameObjects/Components/Disposal/DisposalTaggerComponent.cs

@@ -1,8 +1,8 @@
 #nullable enable
-using Content.Server.Interfaces;
 using Content.Server.Interfaces.GameObjects.Components.Items;
 using Content.Server.Utility;
 using Content.Shared.GameObjects.EntitySystems;
+using Content.Shared.Interfaces;
 using Content.Shared.Interfaces.GameObjects.Components;
 using Robust.Server.GameObjects.Components.UserInterface;
 using Robust.Server.GameObjects.EntitySystems;
@@ -12,7 +12,6 @@ using Robust.Shared.GameObjects;
 using Robust.Shared.GameObjects.Components;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
-using Robust.Shared.IoC;
 using Robust.Shared.Localization;
 using Robust.Shared.Maths;
 using Robust.Shared.ViewVariables;
@@ -25,7 +24,6 @@ namespace Content.Server.GameObjects.Components.Disposal
     [ComponentReference(typeof(IDisposalTubeComponent))]
     public class DisposalTaggerComponent : DisposalTransitComponent, IActivate
     {
-        [Dependency] private readonly IServerNotifyManager _notifyManager = default!;
         public override string Name => "DisposalTagger";
 
         [ViewVariables(VVAccess.ReadWrite)]
@@ -128,8 +126,7 @@ namespace Content.Server.GameObjects.Components.Disposal
 
             if (!args.User.TryGetComponent(out IHandsComponent? hands))
             {
-                _notifyManager.PopupMessage(Owner.Transform.GridPosition, args.User,
-                    Loc.GetString("You have no hands."));
+                Owner.PopupMessage(args.User, Loc.GetString("You have no hands."));
                 return;
             }