Merge remote-tracking branch 'upstream/master' into 20-10-30-admins

Content.Client/Arcade/SpaceVillainArcadeMenu.cs

@@ -1,7 +1,9 @@
-using Content.Client.GameObjects.Components.Arcade;
+using System.Linq;
+using Content.Client.GameObjects.Components.Arcade;
 using Content.Shared.GameObjects.Components.Arcade;
 using Robust.Client.UserInterface.Controls;
 using Robust.Client.UserInterface.CustomControls;
+using Robust.Shared.Localization;
 using Vector2 = Robust.Shared.Maths.Vector2;
 
 namespace Content.Client.Arcade
@@ -16,17 +18,17 @@ namespace Content.Client.Arcade
         private Label _enemyInfoLabel;
         private Label _playerActionLabel;
         private Label _enemyActionLabel;
+
+        private Button[] _gameButtons = new Button[3]; //used to disable/enable all game buttons
         public SpaceVillainArcadeMenu(SpaceVillainArcadeBoundUserInterface owner)
         {
-            Title = "Space Villain";
+            Title = Loc.GetString("Space Villain");
             Owner = owner;
 
-            GridContainer grid = new GridContainer();
-            grid.Columns = 1;
+            var grid = new GridContainer {Columns = 1};
 
-            GridContainer infoGrid = new GridContainer();
-            infoGrid.Columns = 3;
-            infoGrid.AddChild(new Label{ Text = "Player", Align = Label.AlignMode.Center });
+            var infoGrid = new GridContainer {Columns = 3};
+            infoGrid.AddChild(new Label{ Text = Loc.GetString("Player"), Align = Label.AlignMode.Center });
             infoGrid.AddChild(new Label{ Text = "|", Align = Label.AlignMode.Center });
             _enemyNameLabel = new Label{ Align = Label.AlignMode.Center};
             infoGrid.AddChild(_enemyNameLabel);
@@ -36,38 +38,35 @@ namespace Content.Client.Arcade
             infoGrid.AddChild(new Label{ Text = "|", Align = Label.AlignMode.Center });
             _enemyInfoLabel = new Label {Align = Label.AlignMode.Center};
             infoGrid.AddChild(_enemyInfoLabel);
-            CenterContainer centerContainer = new CenterContainer();
+            var centerContainer = new CenterContainer();
             centerContainer.AddChild(infoGrid);
             grid.AddChild(centerContainer);
 
-            _playerActionLabel = new Label();
-            _playerActionLabel.Align = Label.AlignMode.Center;
+            _playerActionLabel = new Label {Align = Label.AlignMode.Center};
             grid.AddChild(_playerActionLabel);
 
-            _enemyActionLabel = new Label();
-            _enemyActionLabel.Align = Label.AlignMode.Center;
+            _enemyActionLabel = new Label {Align = Label.AlignMode.Center};
             grid.AddChild(_enemyActionLabel);
 
-            GridContainer buttonGrid = new GridContainer();
-            buttonGrid.Columns = 3;
-            Button attack = new ActionButton(Owner, SharedSpaceVillainArcadeComponent.PlayerAction.Attack);
-            attack.Text = "ATTACK";
-            buttonGrid.AddChild(attack);
+            var buttonGrid = new GridContainer {Columns = 3};
+            _gameButtons[0] = new ActionButton(Owner, SharedSpaceVillainArcadeComponent.PlayerAction.Attack)
+                {Text = Loc.GetString("ATTACK")};
+            buttonGrid.AddChild(_gameButtons[0]);
 
-            Button heal = new ActionButton(Owner, SharedSpaceVillainArcadeComponent.PlayerAction.Heal);
-            heal.Text = "HEAL";
-            buttonGrid.AddChild(heal);
+            _gameButtons[1] = new ActionButton(Owner, SharedSpaceVillainArcadeComponent.PlayerAction.Heal)
+                {Text = Loc.GetString("HEAL")};
+            buttonGrid.AddChild(_gameButtons[1]);
 
-            Button recharge = new ActionButton(Owner, SharedSpaceVillainArcadeComponent.PlayerAction.Recharge);
-            recharge.Text = "RECHARGE";
-            buttonGrid.AddChild(recharge);
+            _gameButtons[2] = new ActionButton(Owner, SharedSpaceVillainArcadeComponent.PlayerAction.Recharge)
+                {Text = Loc.GetString("RECHARGE")};
+            buttonGrid.AddChild(_gameButtons[2]);
 
             centerContainer = new CenterContainer();
             centerContainer.AddChild(buttonGrid);
             grid.AddChild(centerContainer);
 
-            Button newGame = new ActionButton(Owner, SharedSpaceVillainArcadeComponent.PlayerAction.NewGame);
-            newGame.Text = "New Game";
+            var newGame = new ActionButton(Owner, SharedSpaceVillainArcadeComponent.PlayerAction.NewGame)
+                {Text = Loc.GetString("New Game")};
             grid.AddChild(newGame);
 
             centerContainer = new CenterContainer();
@@ -79,6 +78,11 @@ namespace Content.Client.Arcade
         {
             Title = message.GameTitle;
             _enemyNameLabel.Text = message.EnemyName;
+
+            foreach (var gameButton in _gameButtons)
+            {
+                gameButton.Disabled = message.ButtonsDisabled;
+            }
         }
 
         public void UpdateInfo(SharedSpaceVillainArcadeComponent.SpaceVillainArcadeDataUpdateMessage message)

Content.Client/ClientNotifyManager.cs

@@ -1,3 +1,4 @@
+#nullable enable
 using System;
 using System.Collections.Generic;
 using Content.Client.Interfaces;
@@ -54,27 +55,23 @@ namespace Content.Client
 
         private void DoNotifyEntity(MsgDoNotifyEntity message)
         {
-            if (!_entityManager.TryGetEntity(message.Entity, out var entity))
+            if (_playerManager.LocalPlayer?.ControlledEntity == null ||
+                !_entityManager.TryGetEntity(message.Entity, out var entity))
             {
                 return;
             }
 
-            PopupMessage(_eyeManager.CoordinatesToScreen(entity.Transform.Coordinates), message.Message);
+            PopupMessage(entity, _playerManager.LocalPlayer.ControlledEntity, message.Message);
         }
 
         public override void PopupMessage(IEntity source, IEntity viewer, string message)
         {
-            if (viewer != _playerManager.LocalPlayer?.ControlledEntity)
-            {
-                return;
-            }
-
-            PopupMessage(_eyeManager.CoordinatesToScreen(source.Transform.Coordinates), message);
+            PopupMessage(_eyeManager.CoordinatesToScreen(source.Transform.Coordinates), message, source);
         }
 
         public override void PopupMessage(EntityCoordinates coordinates, IEntity viewer, string message)
         {
-            if (viewer != _playerManager.LocalPlayer.ControlledEntity)
+            if (viewer != _playerManager.LocalPlayer?.ControlledEntity)
             {
                 return;
             }
@@ -84,7 +81,7 @@ namespace Content.Client
 
         public override void PopupMessageCursor(IEntity viewer, string message)
         {
-            if (viewer != _playerManager.LocalPlayer.ControlledEntity)
+            if (viewer != _playerManager.LocalPlayer?.ControlledEntity)
             {
                 return;
             }
@@ -94,13 +91,21 @@ namespace Content.Client
 
         public void PopupMessage(ScreenCoordinates coordinates, string message)
         {
-            var label = new PopupLabel
+            PopupMessage(coordinates, message, null);
+        }
+
+        public void PopupMessage(ScreenCoordinates coordinates, string message, IEntity? entity)
         {
+            var label = new PopupLabel(_eyeManager)
+            {
+                Entity = entity,
                 Text = message,
                 StyleClasses = { StyleNano.StyleClassPopupMessage },
             };
+
             _userInterfaceManager.PopupRoot.AddChild(label);
             var minimumSize = label.CombinedMinimumSize;
+
             LayoutContainer.SetPosition(label, label.InitialPos = coordinates.Position - minimumSize / 2);
             _aliveLabels.Add(label);
         }
@@ -125,20 +130,30 @@ namespace Content.Client
 
         private class PopupLabel : Label
         {
+            private readonly IEyeManager _eyeManager;
+
             public float TimeLeft { get; private set; }
             public Vector2 InitialPos { get; set; }
+            public IEntity? Entity { get; set; }
 
-            public PopupLabel()
+            public PopupLabel(IEyeManager eyeManager)
             {
+                _eyeManager = eyeManager;
                 ShadowOffsetXOverride = 1;
                 ShadowOffsetYOverride = 1;
                 FontColorShadowOverride = Color.Black;
             }
 
-            protected override void Update(FrameEventArgs eventArgs)
+            protected override void FrameUpdate(FrameEventArgs eventArgs)
             {
                 TimeLeft += eventArgs.DeltaSeconds;
-                LayoutContainer.SetPosition(this, InitialPos - (0, 20 * (TimeLeft * TimeLeft + TimeLeft)));
+
+                var position = Entity == null
+                    ? InitialPos
+                    : _eyeManager.CoordinatesToScreen(Entity.Transform.Coordinates).Position - CombinedMinimumSize / 2;
+
+                LayoutContainer.SetPosition(this, position - (0, 20 * (TimeLeft * TimeLeft + TimeLeft)));
+
                 if (TimeLeft > 0.5f)
                 {
                     Modulate = Color.White.WithAlpha(1f - 0.2f * (float)Math.Pow(TimeLeft - 0.5f, 3f));

Content.Client/Content.Client.csproj

@@ -8,6 +8,7 @@
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <OutputPath>..\bin\Content.Client\</OutputPath>
     <OutputType Condition="'$(FullRelease)' != 'True'">Exe</OutputType>
+    <WarningsAsErrors>CS8604;CS8765</WarningsAsErrors>
   </PropertyGroup>
   <Import Project="..\RobustToolbox\MSBuild\Robust.DefineConstants.targets" />
   <ItemGroup>

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

@@ -1,4 +1,4 @@
-#nullable enable
+#nullable enable
 using Content.Client.GameObjects.Components.Disposal;
 using Content.Client.GameObjects.Components.MedicalScanner;
 using Content.Shared.GameObjects.Components.Body;
@@ -14,7 +14,8 @@ namespace Content.Client.GameObjects.Components.Body
         public bool CanDrop(CanDropEventArgs eventArgs)
         {
             if (eventArgs.Target.HasComponent<DisposalUnitComponent>() ||
-                eventArgs.Target.HasComponent<MedicalScannerComponent>())
+                eventArgs.Target.HasComponent<MedicalScannerComponent>() ||
+                eventArgs.Target.HasComponent<DisposalMailingUnitComponent>())
             {
                 return true;
             }

Content.Client/GameObjects/Components/Configuration/ConfigurationBoundUserInterface.cs

@@ -0,0 +1,55 @@
+using Robust.Client.GameObjects.Components.UserInterface;
+using Robust.Shared.GameObjects.Components.UserInterface;
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
+using static Content.Shared.GameObjects.Components.SharedConfigurationComponent;
+
+namespace Content.Client.GameObjects.Components.Wires
+{
+    public class ConfigurationBoundUserInterface : BoundUserInterface
+    {
+        public Regex Validation { get; internal set; }
+
+        public ConfigurationBoundUserInterface(ClientUserInterfaceComponent owner, object uiKey) : base(owner, uiKey)
+        {
+        }
+
+        private ConfigurationMenu _menu;
+
+        protected override void Open()
+        {
+            base.Open();
+            _menu = new ConfigurationMenu(this);
+
+            _menu.OnClose += Close;
+            _menu.OpenCentered();
+        }
+
+        protected override void UpdateState(BoundUserInterfaceState state)
+        {
+            base.UpdateState(state);
+            _menu.Populate(state as ConfigurationBoundUserInterfaceState);
+        }
+
+        protected override void ReceiveMessage(BoundUserInterfaceMessage message)
+        {
+            base.ReceiveMessage(message);
+            if (message is ValidationUpdateMessage msg)
+            {
+                Validation = new Regex(msg.ValidationString, RegexOptions.Compiled);
+            }
+        }
+
+        public void SendConfiguration(Dictionary<string, string> config)
+        {
+            SendMessage(new ConfigurationUpdatedMessage(config));
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            base.Dispose(disposing);
+
+            _menu.Close();
+        }
+    }
+}

Content.Client/GameObjects/Components/Configuration/ConfigurationMenu.cs

@@ -0,0 +1,176 @@
+using System.Collections.Generic;
+using Namotion.Reflection;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Shared.Localization;
+using Robust.Shared.Maths;
+using static Content.Shared.GameObjects.Components.SharedConfigurationComponent;
+using static Robust.Client.UserInterface.Controls.BaseButton;
+
+namespace Content.Client.GameObjects.Components.Wires
+{
+    public class ConfigurationMenu : SS14Window
+    {
+        public ConfigurationBoundUserInterface Owner { get; }
+
+        private readonly VBoxContainer _baseContainer;
+        private readonly VBoxContainer _column;
+        private readonly HBoxContainer _row;
+
+        private readonly List<(string  name, LineEdit input)> _inputs;
+
+        protected override Vector2? CustomSize => (300, 250);
+
+        public ConfigurationMenu(ConfigurationBoundUserInterface owner)
+        {
+            Owner = owner;
+
+            _inputs = new List<(string name, LineEdit input)>();
+
+            Title = Loc.GetString("Device Configuration");
+
+            var margin = new MarginContainer
+            {
+                MarginBottomOverride = 8,
+                MarginLeftOverride = 8,
+                MarginRightOverride = 8,
+                MarginTopOverride = 8
+            };
+
+            _baseContainer = new VBoxContainer
+            {
+                SizeFlagsVertical = SizeFlags.FillExpand,
+                SizeFlagsHorizontal = SizeFlags.FillExpand
+            };
+
+            _column = new VBoxContainer
+            {
+                SeparationOverride = 16,
+                SizeFlagsVertical = SizeFlags.Fill
+            };
+
+            _row = new HBoxContainer
+            {
+                SeparationOverride = 16,
+                SizeFlagsHorizontal = SizeFlags.FillExpand
+            };
+
+            var buttonRow = new HBoxContainer
+            {
+                SizeFlagsHorizontal = SizeFlags.FillExpand
+            };
+
+            var spacer1 = new HBoxContainer
+            {
+                SizeFlagsHorizontal = SizeFlags.Expand
+            };
+
+            var spacer2 = new HBoxContainer()
+            {
+                SizeFlagsHorizontal = SizeFlags.Expand
+            };
+
+            var confirmButton = new Button
+            {
+                Text = Loc.GetString("Confirm"),
+                SizeFlagsHorizontal = SizeFlags.ShrinkCenter,
+                SizeFlagsVertical = SizeFlags.ShrinkCenter
+            };
+
+            confirmButton.OnButtonUp += OnConfirm;
+            buttonRow.AddChild(spacer1);
+            buttonRow.AddChild(confirmButton);
+            buttonRow.AddChild(spacer2);
+
+            var outerColumn = new ScrollContainer
+            {
+                SizeFlagsVertical = SizeFlags.FillExpand,
+                SizeFlagsHorizontal = SizeFlags.FillExpand,
+                ModulateSelfOverride = Color.FromHex("#202025")
+            };
+
+            margin.AddChild(_column);
+            outerColumn.AddChild(margin);
+            _baseContainer.AddChild(outerColumn);
+            _baseContainer.AddChild(buttonRow);
+            Contents.AddChild(_baseContainer);
+        }
+
+        public void Populate(ConfigurationBoundUserInterfaceState state)
+        {
+            _column.Children.Clear();
+            _inputs.Clear();
+            
+            foreach (var field in state.Config)
+            {
+                var margin = new MarginContainer
+                {
+                    MarginRightOverride = 8
+                };
+
+                var label = new Label
+                {
+                    Name = field.Key,
+                    Text = field.Key + ":",
+                    SizeFlagsVertical = SizeFlags.ShrinkCenter,
+                    SizeFlagsHorizontal = SizeFlags.FillExpand,
+                    SizeFlagsStretchRatio = .2f,
+                    CustomMinimumSize = new Vector2(60, 0)
+                };
+
+                var input = new LineEdit
+                {
+                    Name = field.Key + "-input",
+                    Text = field.Value,
+                    IsValid = Validate,
+                    SizeFlagsHorizontal = SizeFlags.FillExpand,
+                    SizeFlagsStretchRatio = .8f
+                };
+
+                _inputs.Add((field.Key, input));
+
+                var row = new HBoxContainer();
+                CopyProperties(_row, row);
+
+                margin.AddChild(label);
+                row.AddChild(margin);
+                row.AddChild(input);
+                _column.AddChild(row);
+            }
+        }
+
+        private void OnConfirm(ButtonEventArgs args)
+        {
+            var config = GenerateDictionary<string, LineEdit>(_inputs, "Text");
+            
+            Owner.SendConfiguration(config);
+            Close();
+        }
+
+        private bool Validate(string value)
+        {
+            return Owner.Validation == null || Owner.Validation.IsMatch(value);
+        }
+
+        private Dictionary<string, TConfig> GenerateDictionary<TConfig, TInput>(List<(string name, TInput input)> inputs, string propertyName) where TInput : Control
+        {
+            var dictionary = new Dictionary<string, TConfig>();
+            foreach (var input in inputs)
+            {
+                var value = input.input.TryGetPropertyValue<TConfig>(propertyName);
+                dictionary.Add(input.name, value);
+            }
+
+            return dictionary;
+        }
+
+        private static void CopyProperties<T>(T from, T to) where T : Control
+        {
+            foreach (var property in from.AllAttachedProperties)
+            {
+                to.SetValue(property.Key, property.Value);
+            }
+        }
+    }
+}

Content.Client/GameObjects/Components/Disposal/DisposalMailingUnitBoundUserInterface.cs

@@ -0,0 +1,73 @@
+#nullable enable
+using JetBrains.Annotations;
+using Robust.Client.GameObjects.Components.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Shared.GameObjects.Components.UserInterface;
+using static Content.Shared.GameObjects.Components.Disposal.SharedDisposalMailingUnitComponent;
+
+namespace Content.Client.GameObjects.Components.Disposal
+{
+    /// <summary>
+    /// Initializes a <see cref="DisposalMailingUnitWindow"/> and updates it when new server messages are received.
+    /// </summary>
+    [UsedImplicitly]
+    public class DisposalMailingUnitBoundUserInterface : BoundUserInterface
+    {
+        private DisposalMailingUnitWindow? _window;
+
+        public DisposalMailingUnitBoundUserInterface(ClientUserInterfaceComponent owner, object uiKey) : base(owner, uiKey)
+        {
+        }
+
+        private void ButtonPressed(UiButton button)
+        {
+            SendMessage(new UiButtonPressedMessage(button));
+        }
+
+        protected override void Open()
+        {
+            base.Open();
+
+            _window = new DisposalMailingUnitWindow();
+
+            _window.OpenCentered();
+            _window.OnClose += Close;
+
+            _window.Eject.OnPressed += _ => ButtonPressed(UiButton.Eject);
+            _window.Engage.OnPressed += _ => ButtonPressed(UiButton.Engage);
+            _window.Power.OnPressed += _ => ButtonPressed(UiButton.Power);
+            _window.TargetListContainer.OnItemSelected += TargetSelected;
+
+        }
+
+
+        protected override void UpdateState(BoundUserInterfaceState state)
+        {
+            base.UpdateState(state);
+
+            if (!(state is DisposalMailingUnitBoundUserInterfaceState cast))
+            {
+                return;
+            }
+
+            _window?.UpdateState(cast);
+        }
+
+        private void TargetSelected(ItemList.ItemListSelectedEventArgs item)
+        {
+            SendMessage(new UiTargetUpdateMessage(_window?.TargetList[item.ItemIndex]));
+            //(ノ°Д°）ノ︵ ┻━┻
+            if (_window != null) _window.Engage.Disabled = false;
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            base.Dispose(disposing);
+
+            if (disposing)
+            {
+                _window?.Dispose();
+            }
+        }
+    }
+}

Content.Client/GameObjects/Components/Disposal/DisposalMailingUnitComponent.cs

@@ -0,0 +1,11 @@
+using Content.Shared.GameObjects.Components.Disposal;
+using Robust.Shared.GameObjects;
+
+namespace Content.Client.GameObjects.Components.Disposal
+{
+    [RegisterComponent]
+    [ComponentReference(typeof(SharedDisposalMailingUnitComponent))]
+    public class DisposalMailingUnitComponent : SharedDisposalMailingUnitComponent
+    {
+    }
+}

Content.Client/GameObjects/Components/Disposal/DisposalMailingUnitWindow.cs

@@ -0,0 +1,285 @@
+using Content.Shared.GameObjects.Components.Disposal;
+using Robust.Client.Graphics.Drawing;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Shared.Localization;
+using Robust.Shared.Maths;
+using System.Collections.Generic;
+using static Content.Shared.GameObjects.Components.Disposal.SharedDisposalMailingUnitComponent;
+
+namespace Content.Client.GameObjects.Components.Disposal
+{
+    /// <summary>
+    /// Client-side UI used to control a <see cref="SharedDisposalMailingUnitComponent"/>
+    /// </summary>
+    public class DisposalMailingUnitWindow : SS14Window
+    {
+        private readonly Label _unitState;
+        private readonly ProgressBar _pressureBar;
+        private readonly Label _pressurePercentage;
+        public readonly Button Engage;
+        public readonly Button Eject;
+        public readonly Button Power;
+
+        public readonly ItemList TargetListContainer;
+        public List<string> TargetList;
+        private readonly Label _tagLabel;
+
+        protected override Vector2? CustomSize => (460, 220);
+
+        public DisposalMailingUnitWindow()
+        {
+            TargetList = new List<string>();
+            Contents.AddChild(new HBoxContainer
+            {
+                Children =
+                {
+                    new MarginContainer
+                    {
+                        MarginLeftOverride = 8,
+                        MarginRightOverride = 8,
+                        SizeFlagsHorizontal = SizeFlags.FillExpand,
+                        Children =
+                        {
+                            new VBoxContainer
+                            {
+                                SizeFlagsHorizontal = SizeFlags.FillExpand,
+                                Children =
+                                {
+                                    new HBoxContainer
+                                    {
+                                        Children =
+                                        {
+                                            new Label {Text = Loc.GetString("State: ")},
+                                            new Control {CustomMinimumSize = (4, 0)},
+                                            (_unitState = new Label {Text = Loc.GetString("Ready")})
+                                        }
+                                    },
+                                    new Control {CustomMinimumSize = (0, 10)},
+                                    new HBoxContainer
+                                    {
+                                        SizeFlagsHorizontal = SizeFlags.FillExpand,
+                                        Children =
+                                        {
+                                            new Label {Text = Loc.GetString("Pressure:")},
+                                            new Control {CustomMinimumSize = (4, 0)},
+                                            (_pressureBar = new ProgressBar
+                                            {
+                                                CustomMinimumSize = (100, 20),
+                                                SizeFlagsHorizontal = SizeFlags.FillExpand,
+                                                MinValue = 0,
+                                                MaxValue = 1,
+                                                Page = 0,
+                                                Value = 0.5f,
+                                                Children =
+                                                {
+                                                    (_pressurePercentage = new Label())
+                                                }
+                                            })
+                                        }
+                                    },
+                                    new Control {CustomMinimumSize = (0, 10)},
+                                    new HBoxContainer
+                                    {
+                                        SizeFlagsHorizontal = SizeFlags.FillExpand,
+                                        Children =
+                                        {
+                                            new Label {Text = Loc.GetString("Handle:")},
+                                            new Control {
+                                                CustomMinimumSize = (4, 0),
+                                                SizeFlagsHorizontal = SizeFlags.FillExpand
+                                            },
+                                            (Engage = new Button
+                                            {
+                                                CustomMinimumSize = (16, 0),
+                                                Text = Loc.GetString("Engage"),
+                                                ToggleMode = true,
+                                                Disabled = true
+                                            })
+                                        }
+                                    },
+                                    new Control {CustomMinimumSize = (0, 10)},
+                                    new HBoxContainer
+                                    {
+                                        SizeFlagsHorizontal = SizeFlags.FillExpand,
+                                        Children =
+                                        {
+                                            new Label {Text = Loc.GetString("Eject:")},
+                                            new Control {
+                                                CustomMinimumSize = (4, 0),
+                                                SizeFlagsHorizontal = SizeFlags.FillExpand
+                                            },
+                                            (Eject = new Button {
+                                                CustomMinimumSize = (16, 0),
+                                                Text = Loc.GetString("Eject Contents"),
+                                                //SizeFlagsHorizontal = SizeFlags.ShrinkEnd
+                                            })
+                                        }
+                                    },
+                                    new Control {CustomMinimumSize = (0, 10)},
+                                    new HBoxContainer
+                                    {
+                                        Children =
+                                        {
+                                            (Power = new CheckButton {Text = Loc.GetString("Power")}),
+                                        }
+                                    }
+                                }
+                            },
+                        }
+                    },
+                    new MarginContainer
+                    {
+                        MarginLeftOverride = 12,
+                        MarginRightOverride = 8,
+                        SizeFlagsHorizontal = SizeFlags.FillExpand,
+                        Children =
+                        {
+                            new VBoxContainer
+                            {
+                                SizeFlagsHorizontal = SizeFlags.Fill,
+                                Children =
+                                {
+                                    new HBoxContainer
+                                    {
+                                        Children =
+                                        {
+                                            new Label
+                                            {
+                                                Text = Loc.GetString("Select a destination:")
+                                            }
+                                        }
+                                    },
+                                    new Control { CustomMinimumSize = new Vector2(0, 8) },
+                                    new HBoxContainer
+                                    {
+                                        SizeFlagsVertical = SizeFlags.FillExpand,
+                                        Children =
+                                        {
+                                            (TargetListContainer = new ItemList
+                                            {
+                                                SelectMode = ItemList.ItemListSelectMode.Single,
+                                                SizeFlagsHorizontal = SizeFlags.FillExpand,
+                                                SizeFlagsVertical = SizeFlags.FillExpand
+                                            })
+                                        }
+                                    },
+                                    new PanelContainer
+                                    {
+                                        PanelOverride = new StyleBoxFlat
+                                        {
+                                            BackgroundColor = Color.FromHex("#ACBDBA")
+                                        },
+                                        SizeFlagsHorizontal = SizeFlags.FillExpand,
+                                        CustomMinimumSize = new Vector2(0, 1),
+                                    },
+                                    new HBoxContainer
+                                    {
+                                        Children =
+                                        {
+                                            new VBoxContainer
+                                            {
+                                                Children =
+                                                {
+                                                    new MarginContainer
+                                                    {
+                                                        MarginLeftOverride = 4,
+                                                        Children =
+                                                        {
+                                                            new HBoxContainer
+                                                            {
+                                                                SizeFlagsHorizontal = SizeFlags.FillExpand,
+                                                                Children =
+                                                                {
+                                                                    new Label
+                                                                    {
+                                                                        Text = Loc.GetString("This unit:")
+                                                                    },
+                                                                    new Control
+                                                                    {
+                                                                        CustomMinimumSize = new Vector2(4, 0)
+                                                                    },
+                                                                    (_tagLabel = new Label
+                                                                    {
+                                                                        Text = "-",
+                                                                        SizeFlagsVertical = SizeFlags.ShrinkEnd
+                                                                    })
+                                                                }
+                                                            }
+                                                        }
+                                                    },
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            });
+        }
+
+        private void UpdatePressureBar(float pressure)
+        {
+            _pressureBar.Value = pressure;
+
+            var normalized = pressure / _pressureBar.MaxValue;
+
+            const float leftHue = 0.0f; // Red
+            const float middleHue = 0.066f; // Orange
+            const float rightHue = 0.33f; // Green
+            const float saturation = 1.0f; // Uniform saturation
+            const float value = 0.8f; // Uniform value / brightness
+            const float alpha = 1.0f; // Uniform alpha
+
+            // These should add up to 1.0 or your transition won't be smooth
+            const float leftSideSize = 0.5f; // Fraction of _chargeBar lerped from leftHue to middleHue
+            const float rightSideSize = 0.5f; // Fraction of _chargeBar lerped from middleHue to rightHue
+
+            float finalHue;
+            if (normalized <= leftSideSize)
+            {
+                normalized /= leftSideSize; // Adjust range to 0.0 to 1.0
+                finalHue = MathHelper.Lerp(leftHue, middleHue, normalized);
+            }
+            else
+            {
+                normalized = (normalized - leftSideSize) / rightSideSize; // Adjust range to 0.0 to 1.0.
+                finalHue = MathHelper.Lerp(middleHue, rightHue, normalized);
+            }
+
+            // Check if null first to avoid repeatedly creating this.
+            _pressureBar.ForegroundStyleBoxOverride ??= new StyleBoxFlat();
+
+            var foregroundStyleBoxOverride = (StyleBoxFlat) _pressureBar.ForegroundStyleBoxOverride;
+            foregroundStyleBoxOverride.BackgroundColor =
+                Color.FromHsv(new Vector4(finalHue, saturation, value, alpha));
+
+            var percentage = pressure / _pressureBar.MaxValue * 100;
+            _pressurePercentage.Text = $" {percentage:0}%";
+        }
+
+        public void UpdateState(DisposalMailingUnitBoundUserInterfaceState state)
+        {
+            Title = state.UnitName;
+            _unitState.Text = state.UnitState;
+            UpdatePressureBar(state.Pressure);
+            Power.Pressed = state.Powered;
+            Engage.Pressed = state.Engaged;
+            PopulateTargetList(state.Tags);
+            _tagLabel.Text = state.Tag;
+            TargetList = state.Tags;
+        }
+
+        private void PopulateTargetList(List<string> tags)
+        {
+            TargetListContainer.Clear();
+            foreach (var target in tags)
+            {
+                TargetListContainer.AddItem(target);
+            }
+        }
+    }
+}

Content.Client/GameObjects/Components/HUD/Inventory/ClientInventoryComponent.cs

@@ -82,7 +82,10 @@ namespace Content.Client.GameObjects.Components.HUD.Inventory
 
             foreach (var (slot, entityUid) in cast.Entities)
             {
-                var entity = Owner.EntityManager.GetEntity(entityUid);
+                if (!Owner.EntityManager.TryGetEntity(entityUid, out var entity))
+                {
+                    continue;
+                }
                 if (!_slots.ContainsKey(slot) || _slots[slot] != entity)
                 {
                     _slots[slot] = entity;

Content.Client/GameObjects/Components/HandheldLightComponent.cs

@@ -1,5 +1,6 @@
 using System;
 using Content.Shared.GameObjects.Components;
+using Content.Shared.Utility;
 using Robust.Client.Graphics.Drawing;
 using Robust.Client.UserInterface;
 using Robust.Client.UserInterface.Controls;
@@ -88,23 +89,27 @@ namespace Content.Client.GameObjects.Components
                 }
                 else
                 {
-                    level = 1 + (int) MathF.Round(charge * 6);
+                    level = ContentHelpers.RoundToNearestLevels(charge, 1.0, 6) + 1;
                 }
 
-                if (level == 1)
+                if (level == 0)
+                {
+                    _sections[0].PanelOverride = _styleBoxUnlit;
+                }
+                else if (level == 1)
                 {
                     // Flash the last light.
                     _sections[0].PanelOverride = _timer > TimerCycle / 2 ? _styleBoxLit : _styleBoxUnlit;
                 }
                 else
                 {
-                    _sections[0].PanelOverride = level > 2 ? _styleBoxLit : _styleBoxUnlit;
+                    _sections[0].PanelOverride = _styleBoxLit;
                 }
 
-                _sections[1].PanelOverride = level > 3 ? _styleBoxLit : _styleBoxUnlit;
-                _sections[2].PanelOverride = level > 4 ? _styleBoxLit : _styleBoxUnlit;
-                _sections[3].PanelOverride = level > 5 ? _styleBoxLit : _styleBoxUnlit;
-                _sections[4].PanelOverride = level > 6 ? _styleBoxLit : _styleBoxUnlit;
+                _sections[1].PanelOverride = level >= 3 ? _styleBoxLit : _styleBoxUnlit;
+                _sections[2].PanelOverride = level >= 4 ? _styleBoxLit : _styleBoxUnlit;
+                _sections[3].PanelOverride = level >= 5 ? _styleBoxLit : _styleBoxUnlit;
+                _sections[4].PanelOverride = level >= 6 ? _styleBoxLit : _styleBoxUnlit;
             }
         }
     }

Content.Client/GameObjects/Components/Instruments/InstrumentComponent.cs

@@ -7,6 +7,7 @@ using Content.Shared.Physics;
 using Robust.Client.Audio.Midi;
 using Robust.Shared.Audio.Midi;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components.Timers;
 using Robust.Shared.Interfaces.Network;
 using Robust.Shared.Interfaces.Timing;
 using Robust.Shared.IoC;
@@ -41,6 +42,10 @@ namespace Content.Client.GameObjects.Components.Instruments
 
         private uint _sequenceStartTick;
 
+        private bool _allowPercussion;
+
+        private bool _allowProgramChange;
+
         /// <summary>
         ///     A queue of MidiEvents to be sent to the server.
         /// </summary>
@@ -67,7 +72,7 @@ namespace Content.Client.GameObjects.Components.Instruments
         ///     Changes the instrument the midi renderer will play.
         /// </summary>
         [ViewVariables(VVAccess.ReadWrite)]
-        public byte InstrumentProgram
+        public override byte InstrumentProgram
         {
             get => _instrumentProgram;
             set
@@ -84,7 +89,7 @@ namespace Content.Client.GameObjects.Components.Instruments
         ///     Changes the instrument bank the midi renderer will use.
         /// </summary>
         [ViewVariables(VVAccess.ReadWrite)]
-        public byte InstrumentBank
+        public override byte InstrumentBank
         {
             get => _instrumentBank;
             set
@@ -97,6 +102,34 @@ namespace Content.Client.GameObjects.Components.Instruments
             }
         }
 
+        [ViewVariables(VVAccess.ReadWrite)]
+        public override bool AllowPercussion
+        {
+            get => _allowPercussion;
+            set
+            {
+                _allowPercussion = value;
+                if (_renderer != null)
+                {
+                    _renderer.DisablePercussionChannel = !_allowPercussion;
+                }
+            }
+        }
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        public override bool AllowProgramChange
+        {
+            get => _allowProgramChange;
+            set
+            {
+                _allowProgramChange = value;
+                if (_renderer != null)
+                {
+                    _renderer.DisableProgramChangeEvent = !_allowProgramChange;
+                }
+            }
+        }
+
         /// <summary>
         ///     Whether this instrument is handheld or not.
         /// </summary>
@@ -127,7 +160,7 @@ namespace Content.Client.GameObjects.Components.Instruments
             IoCManager.InjectDependencies(this);
         }
 
-        protected void SetupRenderer(bool fromStateChange = false)
+        protected virtual void SetupRenderer(bool fromStateChange = false)
         {
             if (IsRendererAlive) return;
 
@@ -141,6 +174,8 @@ namespace Content.Client.GameObjects.Components.Instruments
                 _renderer.MidiBank = _instrumentBank;
                 _renderer.MidiProgram = _instrumentProgram;
                 _renderer.TrackingEntity = Owner;
+                _renderer.DisablePercussionChannel = !_allowPercussion;
+                _renderer.DisableProgramChangeEvent = !_allowProgramChange;
                 _renderer.OnMidiPlayerFinished += () =>
                 {
                     OnMidiPlaybackEnded?.Invoke();
@@ -173,7 +208,7 @@ namespace Content.Client.GameObjects.Components.Instruments
             var renderer = _renderer;
 
             // We dispose of the synth two seconds from now to allow the last notes to stop from playing.
-            Timer.Spawn(2000, () => { renderer?.Dispose(); });
+            Owner.SpawnTimer(2000, () => { renderer?.Dispose(); });
             _renderer = null;
             _midiEventBuffer.Clear();
 
@@ -195,6 +230,8 @@ namespace Content.Client.GameObjects.Components.Instruments
             serializer.DataField(this, x => Handheld, "handheld", false);
             serializer.DataField(ref _instrumentProgram, "program", (byte) 1);
             serializer.DataField(ref _instrumentBank, "bank", (byte) 0);
+            serializer.DataField(ref _allowPercussion, "allowPercussion", false);
+            serializer.DataField(ref _allowProgramChange, "allowProgramChange", false);
         }
 
         public override void HandleNetworkMessage(ComponentMessage message, INetChannel channel, ICommonSession? session = null)
@@ -279,6 +316,11 @@ namespace Content.Client.GameObjects.Components.Instruments
             {
                 EndRenderer(true);
             }
+
+            AllowPercussion = state.AllowPercussion;
+            AllowProgramChange = state.AllowProgramChange;
+            InstrumentBank = state.InstrumentBank;
+            InstrumentProgram = state.InstrumentProgram;
         }
 
         /// <inheritdoc cref="MidiRenderer.OpenInput"/>

Content.Client/GameObjects/Components/Items/HandsComponent.cs

@@ -21,7 +21,6 @@ namespace Content.Client.GameObjects.Components.Items
 
         private HandsGui? _gui;
 
-        /// <inheritdoc />
         private readonly List<Hand> _hands = new List<Hand>();
 
         [ViewVariables] public IReadOnlyList<Hand> Hands => _hands;
@@ -90,7 +89,7 @@ namespace Content.Client.GameObjects.Components.Items
             {
                 if (!TryHand(sharedHand.Name, out var hand))
                 {
-                    hand = new Hand(sharedHand, Owner.EntityManager);
+                    hand = new Hand(this, sharedHand, Owner.EntityManager);
                     AddHand(hand);
                 }
                 else
@@ -102,6 +101,8 @@ namespace Content.Client.GameObjects.Components.Items
                         : null;
                 }
 
+                hand.Enabled = sharedHand.Enabled;
+
                 UpdateHandSprites(hand);
             }
 
@@ -197,10 +198,35 @@ namespace Content.Client.GameObjects.Components.Items
                     _gameHud.HandsContainer.AddChild(_gui);
                     _gui.UpdateHandIcons();
                     break;
-
                 case PlayerDetachedMsg _:
                     _gui?.Parent?.RemoveChild(_gui);
                     break;
+                case HandEnabledMsg msg:
+                {
+                    var hand = GetHand(msg.Name);
+
+                    if (hand?.Button == null)
+                    {
+                        break;
+                    }
+
+                    hand.Button.Blocked.Visible = false;
+
+                    break;
+                }
+                case HandDisabledMsg msg:
+                {
+                    var hand = GetHand(msg.Name);
+
+                    if (hand?.Button == null)
+                    {
+                        break;
+                    }
+
+                    hand.Button.Blocked.Visible = true;
+
+                    break;
+                }
             }
         }
 
@@ -235,9 +261,11 @@ namespace Content.Client.GameObjects.Components.Items
 
     public class Hand
     {
-        // TODO: Separate into server hand and client hand
-        public Hand(SharedHand hand, IEntityManager manager, HandButton? button = null)
+        private bool _enabled = true;
+
+        public Hand(HandsComponent parent, SharedHand hand, IEntityManager manager, HandButton? button = null)
         {
+            Parent = parent;
             Index = hand.Index;
             Name = hand.Name;
             Location = hand.Location;
@@ -252,10 +280,33 @@ namespace Content.Client.GameObjects.Components.Items
             Entity = entity;
         }
 
+        private HandsComponent Parent { get; }
         public int Index { get; }
         public string Name { get; }
         public HandLocation Location { get; set; }
         public IEntity? Entity { get; set; }
         public HandButton? Button { get; set; }
+
+        public bool Enabled
+        {
+            get => _enabled;
+            set
+            {
+                if (_enabled == value)
+                {
+                    return;
+                }
+
+                _enabled = value;
+                Parent.Dirty();
+
+                var message = value
+                    ? (ComponentMessage) new HandEnabledMsg(Name)
+                    : new HandDisabledMsg(Name);
+
+                Parent.HandleMessage(message, Parent);
+                Parent.Owner.SendMessage(Parent, message);
+            }
+        }
     }
 }

Content.Client/GameObjects/Components/Items/ItemComponent.cs

@@ -21,6 +21,8 @@ namespace Content.Client.GameObjects.Components.Items
     [ComponentReference(typeof(IItemComponent))]
     public class ItemComponent : Component, IItemComponent, IDraggable
     {
+        [Dependency] private IResourceCache _resourceCache = default!;
+
         public override string Name => "Item";
         public override uint? NetID => ContentNetIDs.ITEM;
 
@@ -72,8 +74,7 @@ namespace Content.Client.GameObjects.Components.Items
 
         protected RSI GetRSI()
         {
-            var resourceCache = IoCManager.Resolve<IResourceCache>();
-            return resourceCache.GetResource<RSIResource>(SharedSpriteComponent.TextureRoot / RsiPath).RSI;
+            return _resourceCache.GetResource<RSIResource>(SharedSpriteComponent.TextureRoot / RsiPath).RSI;
         }
 
         public override void HandleComponentState(ComponentState curState, ComponentState nextState)

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

@@ -35,6 +35,8 @@ namespace Content.Client.GameObjects.Components.Mobs
         [ViewVariables]
         private Dictionary<StatusEffect, CooldownGraphic> _cooldown = new Dictionary<StatusEffect, CooldownGraphic>();
 
+        public override IReadOnlyDictionary<StatusEffect, StatusEffectStatus> Statuses => _status;
+
         /// <summary>
         /// Allows calculating if we need to act due to this component being controlled by the current mob
         /// </summary>

Content.Client/GameObjects/Components/Morgue/BodyBagVisualizer.cs

@@ -0,0 +1,30 @@
+#nullable enable
+using Content.Shared.GameObjects.Components.Morgue;
+using Robust.Client.GameObjects;
+using Robust.Client.Interfaces.GameObjects.Components;
+
+namespace Content.Client.GameObjects.Components.Morgue
+{
+    public sealed class BodyBagVisualizer : AppearanceVisualizer
+    {
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+
+            if (!component.Owner.TryGetComponent(out ISpriteComponent? sprite))
+            {
+                return;
+            }
+
+            if (component.TryGetData(BodyBagVisuals.Label, out bool labelVal))
+            {
+                sprite.LayerSetVisible(BodyBagVisualLayers.Label, labelVal);
+            }
+        }
+    }
+
+    public enum BodyBagVisualLayers
+    {
+        Label,
+    }
+}

Content.Client/GameObjects/Components/Morgue/CrematoriumVisualizer.cs

@@ -0,0 +1,75 @@
+#nullable enable
+using Content.Shared.GameObjects.Components.Morgue;
+using Robust.Client.GameObjects;
+using Robust.Client.Interfaces.GameObjects.Components;
+using Robust.Shared.Utility;
+using YamlDotNet.RepresentationModel;
+
+namespace Content.Client.GameObjects.Components.Storage
+{
+    public sealed class CrematoriumVisualizer : AppearanceVisualizer
+    {
+        private string _stateOpen = "";
+        private string _stateClosed = "";
+
+        private string _lightContents = "";
+        private string _lightBurning = "";
+
+        public override void LoadData(YamlMappingNode node)
+        {
+            base.LoadData(node);
+
+            if (node.TryGetNode("state_open", out var child))
+            {
+                _stateOpen = child.AsString();
+            }
+            if (node.TryGetNode("state_closed", out child))
+            {
+                _stateClosed = child.AsString();
+            }
+
+            if (node.TryGetNode("light_contents", out child))
+            {
+                _lightContents = child.AsString();
+            }
+            if (node.TryGetNode("light_burning", out child))
+            {
+                _lightBurning = child.AsString();
+            }
+        }
+
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+
+            if (!component.Owner.TryGetComponent(out ISpriteComponent? sprite)) return;
+
+            sprite.LayerSetState(
+                CrematoriumVisualLayers.Base,
+                component.GetData<bool>(MorgueVisuals.Open)
+                    ? _stateOpen
+                    : _stateClosed
+            );
+
+            var lightState = "";
+            if (component.TryGetData(MorgueVisuals.HasContents,  out bool hasContents) && hasContents) lightState = _lightContents;
+            if (component.TryGetData(CrematoriumVisuals.Burning, out bool isBurning)   && isBurning)   lightState = _lightBurning;
+
+            if (!string.IsNullOrEmpty(lightState))
+            {
+                sprite.LayerSetState(CrematoriumVisualLayers.Light, lightState);
+                sprite.LayerSetVisible(CrematoriumVisualLayers.Light, true);
+            }
+            else
+            {
+                sprite.LayerSetVisible(CrematoriumVisualLayers.Light, false);
+            }
+        }
+    }
+
+    public enum CrematoriumVisualLayers
+    {
+        Base,
+        Light,
+    }
+}

Content.Client/GameObjects/Components/Morgue/MorgueVisualizer.cs

@@ -0,0 +1,81 @@
+#nullable enable
+using Content.Shared.GameObjects.Components.Morgue;
+using Robust.Client.GameObjects;
+using Robust.Client.Interfaces.GameObjects.Components;
+using Robust.Shared.Utility;
+using YamlDotNet.RepresentationModel;
+
+namespace Content.Client.GameObjects.Components.Storage
+{
+    public sealed class MorgueVisualizer : AppearanceVisualizer
+    {
+        private string _stateOpen = "";
+        private string _stateClosed = "";
+
+        private string _lightContents = "";
+        private string _lightMob = "";
+        private string _lightSoul = "";
+
+        public override void LoadData(YamlMappingNode node)
+        {
+            base.LoadData(node);
+
+            if (node.TryGetNode("state_open", out var child))
+            {
+                _stateOpen = child.AsString();
+            }
+            if (node.TryGetNode("state_closed", out child))
+            {
+                _stateClosed = child.AsString();
+            }
+
+            if (node.TryGetNode("light_contents", out child))
+            {
+                _lightContents = child.AsString();
+            }
+            if (node.TryGetNode("light_mob", out child))
+            {
+                _lightMob = child.AsString();
+            }
+            if (node.TryGetNode("light_soul", out child))
+            {
+                _lightSoul = child.AsString();
+            }
+        }
+
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+
+            if (!component.Owner.TryGetComponent(out ISpriteComponent? sprite)) return;
+
+            sprite.LayerSetState(
+                MorgueVisualLayers.Base,
+                component.GetData<bool>(MorgueVisuals.Open)
+                    ? _stateOpen
+                    : _stateClosed
+            );
+
+            var lightState = "";
+            if (component.TryGetData(MorgueVisuals.HasContents, out bool hasContents) && hasContents) lightState = _lightContents;
+            if (component.TryGetData(MorgueVisuals.HasMob,      out bool hasMob)      && hasMob)      lightState = _lightMob;
+            if (component.TryGetData(MorgueVisuals.HasSoul,     out bool hasSoul)     && hasSoul)     lightState = _lightSoul;
+
+            if (!string.IsNullOrEmpty(lightState))
+            {
+                sprite.LayerSetState(MorgueVisualLayers.Light, lightState);
+                sprite.LayerSetVisible(MorgueVisualLayers.Light, true);
+            }
+            else
+            {
+                sprite.LayerSetVisible(MorgueVisualLayers.Light, false);
+            }
+        }
+    }
+
+    public enum MorgueVisualLayers
+    {
+        Base,
+        Light,
+    }
+}

Content.Client/GameObjects/Components/Nutrition/DrinkFoodVisualizer.cs

@@ -22,7 +22,11 @@ namespace Content.Client.GameObjects.Components.Nutrition
 
         public override void OnChangeData(AppearanceComponent component)
         {
-            var sprite = component.Owner.GetComponent<ISpriteComponent>();
+            if(!component.Owner.TryGetComponent<ISpriteComponent>(out var sprite))
+            {
+                return;
+            };
+
             if (!component.TryGetData<float>(SharedFoodComponent.FoodVisuals.MaxUses, out var maxUses))
             {
                 return;

Content.Client/GameObjects/Components/ParticleAcceleratorPartVisualizer.cs

@@ -0,0 +1,79 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Content.Shared.GameObjects.Components;
+using Content.Shared.GameObjects.Components.Singularity;
+using Robust.Client.GameObjects;
+using Robust.Client.Graphics;
+using Robust.Client.Interfaces.GameObjects.Components;
+using Robust.Shared.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.Prototypes;
+using Robust.Shared.Serialization;
+using Robust.Shared.Utility;
+using YamlDotNet.RepresentationModel;
+
+namespace Content.Client.GameObjects.Components
+{
+    public class ParticleAcceleratorPartVisualizer : AppearanceVisualizer
+    {
+        private Dictionary<ParticleAcceleratorVisualState, string> _states = new Dictionary<ParticleAcceleratorVisualState, string>();
+
+        public override void LoadData(YamlMappingNode node)
+        {
+            base.LoadData(node);
+
+            var serializer = YamlObjectSerializer.NewReader(node);
+            if (!serializer.TryReadDataField<string>("baseState", out var baseState))
+            {
+                throw new PrototypeLoadException("No baseState property specified for ParticleAcceleratorPartVisualizer");
+            }
+
+            _states.Add(ParticleAcceleratorVisualState.Powered, baseState+"p");
+            _states.Add(ParticleAcceleratorVisualState.Level0, baseState+"p0");
+            _states.Add(ParticleAcceleratorVisualState.Level1, baseState+"p1");
+            _states.Add(ParticleAcceleratorVisualState.Level2, baseState+"p2");
+            _states.Add(ParticleAcceleratorVisualState.Level3, baseState+"p3");
+        }
+
+        public override void InitializeEntity(IEntity entity)
+        {
+            base.InitializeEntity(entity);
+            if (!entity.TryGetComponent<SpriteComponent>(out var sprite))
+            {
+                throw new EntityCreationException("No sprite component found in entity that has ParticleAcceleratorPartVisualizer");
+            }
+
+            if (!sprite.AllLayers.Any())
+            {
+                throw new EntityCreationException("No Layer set for entity that has ParticleAcceleratorPartVisualizer");
+            }
+        }
+
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            if (component.Owner.Deleted)
+                return;
+
+            if (!component.Owner.TryGetComponent<ISpriteComponent>(out var sprite)) return;
+            if (!component.TryGetData(ParticleAcceleratorVisuals.VisualState, out ParticleAcceleratorVisualState state))
+            {
+                state = ParticleAcceleratorVisualState.Unpowered;
+            }
+
+            if (state != ParticleAcceleratorVisualState.Unpowered)
+            {
+                sprite.LayerSetVisible(ParticleAcceleratorVisualLayers.Unlit, true);
+                sprite.LayerSetState(ParticleAcceleratorVisualLayers.Unlit, _states[state]);
+            }
+            else
+            {
+                sprite.LayerSetVisible(ParticleAcceleratorVisualLayers.Unlit, false);
+            }
+        }
+    }
+}

Content.Client/GameObjects/Components/Power/PowerCellVisualizer.cs

@@ -36,7 +36,8 @@ namespace Content.Client.GameObjects.Components.Power
             var sprite = component.Owner.GetComponent<ISpriteComponent>();
             if (component.TryGetData(PowerCellVisuals.ChargeLevel, out float fraction))
             {
-                sprite.LayerSetState(Layers.Charge, $"{_prefix}_{ContentHelpers.RoundToLevels(fraction, 1, 5) * 25}");
+                int level = ContentHelpers.RoundToNearestLevels(fraction, 1, 4) * 25;
+                sprite.LayerSetState(Layers.Charge, $"{_prefix}_{level}");
             }
         }
 

Content.Client/GameObjects/Components/RadiationCollectorVisualizer.cs

@@ -0,0 +1,104 @@
+using System;
+using Content.Client.GameObjects.Components.Doors;
+using Content.Client.GameObjects.Components.Wires;
+using Content.Shared.GameObjects.Components.Doors;
+using Content.Shared.GameObjects.Components.Singularity;
+using Robust.Client.Animations;
+using Robust.Client.GameObjects;
+using Robust.Client.GameObjects.Components.Animations;
+using Robust.Client.Interfaces.GameObjects.Components;
+using Robust.Shared.Interfaces.GameObjects;
+using YamlDotNet.RepresentationModel;
+
+namespace Content.Client.GameObjects.Components
+{
+    public class RadiationCollectorVisualizer : AppearanceVisualizer
+    {
+        private const string AnimationKey = "radiationcollector_animation";
+
+        private Animation ActivateAnimation;
+        private Animation DeactiveAnimation;
+
+        public override void LoadData(YamlMappingNode node)
+        {
+            ActivateAnimation = new Animation {Length = TimeSpan.FromSeconds(0.8f)};
+            {
+                var flick = new AnimationTrackSpriteFlick();
+                ActivateAnimation.AnimationTracks.Add(flick);
+                flick.LayerKey = RadiationCollectorVisualLayers.Main;
+                flick.KeyFrames.Add(new AnimationTrackSpriteFlick.KeyFrame("ca_active", 0f));
+
+                /*var sound = new AnimationTrackPlaySound();
+                CloseAnimation.AnimationTracks.Add(sound);
+                sound.KeyFrames.Add(new AnimationTrackPlaySound.KeyFrame(closeSound, 0));*/
+            }
+
+            DeactiveAnimation = new Animation {Length = TimeSpan.FromSeconds(0.8f)};
+            {
+                var flick = new AnimationTrackSpriteFlick();
+                DeactiveAnimation.AnimationTracks.Add(flick);
+                flick.LayerKey = RadiationCollectorVisualLayers.Main;
+                flick.KeyFrames.Add(new AnimationTrackSpriteFlick.KeyFrame("ca_deactive", 0f));
+
+                /*var sound = new AnimationTrackPlaySound();
+                CloseAnimation.AnimationTracks.Add(sound);
+                sound.KeyFrames.Add(new AnimationTrackPlaySound.KeyFrame(closeSound, 0));*/
+            }
+        }
+
+        public override void InitializeEntity(IEntity entity)
+        {
+            if (!entity.HasComponent<AnimationPlayerComponent>())
+            {
+                entity.AddComponent<AnimationPlayerComponent>();
+            }
+        }
+
+
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            if (component.Owner.Deleted)
+                return;
+
+            if (!component.Owner.TryGetComponent<ISpriteComponent>(out var sprite)) return;
+            if (!component.Owner.TryGetComponent<AnimationPlayerComponent>(out var animPlayer)) return;
+            if (!component.TryGetData(RadiationCollectorVisuals.VisualState, out RadiationCollectorVisualState state))
+            {
+                state = RadiationCollectorVisualState.Deactive;
+            }
+
+            switch (state)
+            {
+                case RadiationCollectorVisualState.Active:
+                    sprite.LayerSetState(RadiationCollectorVisualLayers.Main, "ca_on");
+                    break;
+                case RadiationCollectorVisualState.Activating:
+                    if (!animPlayer.HasRunningAnimation(AnimationKey))
+                    {
+                        animPlayer.Play(ActivateAnimation, AnimationKey);
+                        animPlayer.AnimationCompleted += _ =>
+                            component.SetData(RadiationCollectorVisuals.VisualState,
+                                RadiationCollectorVisualState.Active);
+                    }
+                    break;
+                case RadiationCollectorVisualState.Deactivating:
+                    if (!animPlayer.HasRunningAnimation(AnimationKey))
+                    {
+                        animPlayer.Play(DeactiveAnimation, AnimationKey);
+                        animPlayer.AnimationCompleted += _ =>
+                            component.SetData(RadiationCollectorVisuals.VisualState,
+                                RadiationCollectorVisualState.Deactive);
+                    }
+                    break;
+                case RadiationCollectorVisualState.Deactive:
+                    sprite.LayerSetState(RadiationCollectorVisualLayers.Main, "ca_off");
+                    break;
+            }
+        }
+
+    }
+    public enum RadiationCollectorVisualLayers
+    {
+        Main
+    }
+}

Content.Client/GameObjects/Components/Singularity/ContainmentFieldComponent.cs

@@ -0,0 +1,28 @@
+using Robust.Client.GameObjects;
+using Robust.Client.Interfaces.GameObjects.Components;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Log;
+
+namespace Content.Client.GameObjects.Components.Singularity
+{
+    public class ContainmentFieldComponent : Component
+    {
+        public override string Name => "Containment Field";
+
+        private SpriteComponent _spriteComponent;
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            if (!Owner.TryGetComponent(out _spriteComponent))
+            {
+                Logger.Error("Containmentfieldcomponent created without spritecomponent");
+            }
+            else
+            {
+                _spriteComponent.Directional = false;
+            }
+        }
+    }
+}

Content.Client/GameObjects/Components/Singularity/EmitterVisualizer.cs

@@ -0,0 +1,49 @@
+using System;
+using Content.Shared.GameObjects.Components.Singularity;
+using Robust.Client.GameObjects;
+using Robust.Client.Interfaces.GameObjects.Components;
+
+namespace Content.Client.GameObjects.Components.Singularity
+{
+    public class EmitterVisualizer : AppearanceVisualizer
+    {
+        private const string OverlayBeam = "emitter-beam";
+        private const string OverlayUnderPowered = "emitter-underpowered";
+
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+
+            if (!component.Owner.TryGetComponent(out ISpriteComponent sprite))
+            {
+                return;
+            }
+
+            if (!component.TryGetData(EmitterVisuals.Locked, out bool locked))
+                locked = false;
+
+
+            if (!component.TryGetData(EmitterVisuals.VisualState, out EmitterVisualState state))
+                state = EmitterVisualState.Off;
+
+            switch (state)
+            {
+                case EmitterVisualState.On:
+                    sprite.LayerSetVisible(1, true);
+                    sprite.LayerSetState(1, OverlayBeam);
+                    break;
+                case EmitterVisualState.Underpowered:
+                    sprite.LayerSetVisible(1, true);
+                    sprite.LayerSetState(1, OverlayUnderPowered);
+                    break;
+                case EmitterVisualState.Off:
+                    sprite.LayerSetVisible(1, false);
+                    break;
+                default:
+                    throw new ArgumentOutOfRangeException();
+            }
+
+            sprite.LayerSetVisible(2, locked);
+        }
+    }
+}

Content.Client/GameObjects/Components/Sound/LoopingSoundComponent.cs

@@ -1,8 +1,11 @@
+using System;
 using System.Collections.Generic;
+using System.Linq;
 using Content.Shared.GameObjects.Components.Sound;
 using Content.Shared.Physics;
 using Robust.Client.GameObjects.EntitySystems;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components.Timers;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.Network;
 using Robust.Shared.Interfaces.Random;
@@ -51,11 +54,19 @@ namespace Content.Client.GameObjects.Components.Sound
         {
             if (!schedule.Play) return;
 
-            Timer.Spawn((int) schedule.Delay + (_random.Next((int) schedule.RandomDelay)),() =>
+            Owner.SpawnTimer((int) schedule.Delay + (_random.Next((int) schedule.RandomDelay)),() =>
                 {
                     if (!schedule.Play) return; // We make sure this hasn't changed.
                     if (_audioSystem == null) _audioSystem = EntitySystem.Get<AudioSystem>();
+
+                    if (!_audioStreams.ContainsKey(schedule))
+                    {
                         _audioStreams.Add(schedule,_audioSystem.Play(schedule.Filename, Owner, schedule.AudioParams));
+                    }
+                    else
+                    {
+                        _audioStreams[schedule] = _audioSystem.Play(schedule.Filename, Owner, schedule.AudioParams);
+                    }
 
                     if (schedule.Times == 0) return;
 

Content.Client/GameObjects/Components/Storage/StorageVisualizer.cs

@@ -1,4 +1,4 @@
-using Content.Shared.GameObjects.Components.Storage;
+using Content.Shared.GameObjects.Components.Storage;
 using Robust.Client.GameObjects;
 using Robust.Client.Interfaces.GameObjects.Components;
 using Robust.Shared.Interfaces.GameObjects;
@@ -74,12 +74,15 @@ namespace Content.Client.GameObjects.Components.Storage
                 }
             }
 
+            if (component.TryGetData(StorageVisuals.CanWeld, out bool canWeld) && canWeld)
+            {
                 if (component.TryGetData(StorageVisuals.Welded, out bool weldedVal))
                 {
                     sprite.LayerSetVisible(StorageVisualLayers.Welded, weldedVal);
                 }
             }
         }
+    }
 
     public enum StorageVisualLayers
     {

Content.Client/GameObjects/Components/Weapons/FlashableComponent.cs

@@ -7,6 +7,7 @@ using Robust.Client.Interfaces.Graphics;
 using Robust.Client.Interfaces.Graphics.Overlays;
 using Robust.Client.Player;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components.Timers;
 using Robust.Shared.Interfaces.Timing;
 using Robust.Shared.IoC;
 using Robust.Shared.Maths;
@@ -83,7 +84,7 @@ namespace Content.Client.GameObjects.Components.Weapons
             }
 
             _cancelToken = new CancellationTokenSource();
-            Timer.Spawn((int) duration * 1000, DisableOverlay, _cancelToken.Token);
+            Owner.SpawnTimer((int) duration * 1000, DisableOverlay, _cancelToken.Token);
         }
 
         private void DisableOverlay()

Content.Client/GameObjects/Components/WindowComponent.cs

@@ -1,4 +1,5 @@
-using Content.Client.GameObjects.EntitySystems;
+using System.Diagnostics.CodeAnalysis;
+using Content.Client.GameObjects.EntitySystems;
 using Content.Shared.GameObjects.Components;
 using Robust.Client.GameObjects;
 using Robust.Client.Interfaces.GameObjects.Components;
@@ -34,14 +35,33 @@ namespace Content.Client.GameObjects.Components
             Owner.EntityManager.EventBus.RaiseEvent(EventSource.Local, new WindowSmoothDirtyEvent(Owner));
 
             var state0 = $"{_stateBase}0";
+            const string cracksRSIPath = "/Textures/Constructible/Structures/Windows/cracks.rsi";
             _sprite.LayerMapSet(CornerLayers.SE, _sprite.AddLayerState(state0));
             _sprite.LayerSetDirOffset(CornerLayers.SE, SpriteComponent.DirectionOffset.None);
+            _sprite.LayerMapSet(WindowDamageLayers.DamageSE, _sprite.AddLayerState("0_1", cracksRSIPath));
+            _sprite.LayerSetShader(WindowDamageLayers.DamageSE, "unshaded");
+            _sprite.LayerSetVisible(WindowDamageLayers.DamageSE, false);
+
             _sprite.LayerMapSet(CornerLayers.NE, _sprite.AddLayerState(state0));
             _sprite.LayerSetDirOffset(CornerLayers.NE, SpriteComponent.DirectionOffset.CounterClockwise);
+            _sprite.LayerMapSet(WindowDamageLayers.DamageNE, _sprite.AddLayerState("0_1", cracksRSIPath));
+            _sprite.LayerSetDirOffset(WindowDamageLayers.DamageNE, SpriteComponent.DirectionOffset.CounterClockwise);
+            _sprite.LayerSetShader(WindowDamageLayers.DamageNE, "unshaded");
+            _sprite.LayerSetVisible(WindowDamageLayers.DamageNE, false);
+
             _sprite.LayerMapSet(CornerLayers.NW, _sprite.AddLayerState(state0));
             _sprite.LayerSetDirOffset(CornerLayers.NW, SpriteComponent.DirectionOffset.Flip);
+            _sprite.LayerMapSet(WindowDamageLayers.DamageNW, _sprite.AddLayerState("0_1", cracksRSIPath));
+            _sprite.LayerSetDirOffset(WindowDamageLayers.DamageNW, SpriteComponent.DirectionOffset.Flip);
+            _sprite.LayerSetShader(WindowDamageLayers.DamageNW, "unshaded");
+            _sprite.LayerSetVisible(WindowDamageLayers.DamageNW, false);
+
             _sprite.LayerMapSet(CornerLayers.SW, _sprite.AddLayerState(state0));
             _sprite.LayerSetDirOffset(CornerLayers.SW, SpriteComponent.DirectionOffset.Clockwise);
+            _sprite.LayerMapSet(WindowDamageLayers.DamageSW, _sprite.AddLayerState("0_1", cracksRSIPath));
+            _sprite.LayerSetDirOffset(WindowDamageLayers.DamageSW, SpriteComponent.DirectionOffset.Clockwise);
+            _sprite.LayerSetShader(WindowDamageLayers.DamageSW, "unshaded");
+            _sprite.LayerSetVisible(WindowDamageLayers.DamageSW, false);
         }
 
         /// <inheritdoc />
@@ -91,4 +111,13 @@ namespace Content.Client.GameObjects.Components
             serializer.DataField(ref _stateBase, "base", null);
         }
     }
+
+    [SuppressMessage("ReSharper", "InconsistentNaming")]
+    public enum WindowDamageLayers
+    {
+        DamageSE,
+        DamageNE,
+        DamageNW,
+        DamageSW
+    }
 }

Content.Client/GameObjects/Components/WindowVisualizer.cs

@@ -0,0 +1,60 @@
+using System;
+using Content.Shared.GameObjects.Components;
+using Content.Shared.Utility;
+using JetBrains.Annotations;
+using Robust.Client.GameObjects;
+using Robust.Client.Interfaces.GameObjects.Components;
+using Robust.Shared.GameObjects.Components.Transform;
+using Robust.Shared.Interfaces.GameObjects;
+
+namespace Content.Client.GameObjects.Components
+{
+    [UsedImplicitly]
+    public sealed class WindowVisualizer : AppearanceVisualizer
+    {
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+
+            var sprite = component.Owner.GetComponent<ISpriteComponent>();
+            var snapGrid = component.Owner.GetComponent<SnapGridComponent>();
+            var lowWall = FindLowWall(snapGrid);
+            if (lowWall == null) return;
+
+            if (component.TryGetData(WindowVisuals.Damage, out float fraction))
+            {
+                var level = Math.Min(ContentHelpers.RoundToLevels(fraction, 1, 7), 5);
+                if (level == 0)
+                {
+                    foreach (WindowDamageLayers val in Enum.GetValues(typeof(WindowDamageLayers)))
+                    {
+                        sprite.LayerSetVisible(val, false);
+                    }
+                    return;
+                }
+                foreach (WindowDamageLayers val in Enum.GetValues(typeof(WindowDamageLayers)))
+                {
+                    sprite.LayerSetVisible(val, true);
+                }
+
+                sprite.LayerSetState(WindowDamageLayers.DamageNE, $"{(int) lowWall.LastCornerNE}_{level}");
+                sprite.LayerSetState(WindowDamageLayers.DamageSE, $"{(int) lowWall.LastCornerSE}_{level}");
+                sprite.LayerSetState(WindowDamageLayers.DamageSW, $"{(int) lowWall.LastCornerSW}_{level}");
+                sprite.LayerSetState(WindowDamageLayers.DamageNW, $"{(int) lowWall.LastCornerNW}_{level}");
+
+            }
+        }
+
+        private static LowWallComponent FindLowWall(SnapGridComponent snapGrid)
+        {
+            foreach (var entity in snapGrid.GetLocal())
+            {
+                if (entity.TryGetComponent(out LowWallComponent lowWall))
+                {
+                    return lowWall;
+                }
+            }
+            return null;
+        }
+    }
+}

Content.Client/GameObjects/Components/Wires/WiresMenu.cs

@@ -21,6 +21,8 @@ namespace Content.Client.GameObjects.Components.Wires
 {
     public class WiresMenu : BaseWindow
     {
+        [Dependency] private IResourceCache _resourceCache = default!;
+
         public WiresBoundUserInterface Owner { get; }
 
         private readonly Control _wiresHBox;
@@ -34,7 +36,7 @@ namespace Content.Client.GameObjects.Components.Wires
 
         public WiresMenu(WiresBoundUserInterface owner)
         {
-            var resourceCache = IoCManager.Resolve<IResourceCache>();
+            IoCManager.InjectDependencies(this);
 
             Owner = owner;
             var rootContainer = new LayoutContainer {Name = "WireRoot"};
@@ -42,7 +44,7 @@ namespace Content.Client.GameObjects.Components.Wires
 
             MouseFilter = MouseFilterMode.Stop;
 
-            var panelTex = resourceCache.GetTexture("/Textures/Interface/Nano/button.svg.96dpi.png");
+            var panelTex = _resourceCache.GetTexture("/Textures/Interface/Nano/button.svg.96dpi.png");
             var back = new StyleBoxTexture
             {
                 Texture = panelTex,
@@ -135,8 +137,8 @@ namespace Content.Client.GameObjects.Components.Wires
 
             LayoutContainer.SetAnchorPreset(topContainerWrap, LayoutContainer.LayoutPreset.Wide);
 
-            var font = resourceCache.GetFont("/Fonts/Boxfont-round/Boxfont Round.ttf", 13);
-            var fontSmall = resourceCache.GetFont("/Fonts/Boxfont-round/Boxfont Round.ttf", 10);
+            var font = _resourceCache.GetFont("/Fonts/Boxfont-round/Boxfont Round.ttf", 13);
+            var fontSmall = _resourceCache.GetFont("/Fonts/Boxfont-round/Boxfont Round.ttf", 10);
 
             Button helpButton;
             var topRow = new MarginContainer
@@ -255,7 +257,7 @@ namespace Content.Client.GameObjects.Components.Wires
                 var mirror = random.Next(2) == 0;
                 var flip = random.Next(2) == 0;
                 var type = random.Next(2);
-                var control = new WireControl(wire.Color, wire.Letter, wire.IsCut, flip, mirror, type)
+                var control = new WireControl(wire.Color, wire.Letter, wire.IsCut, flip, mirror, type, _resourceCache)
                 {
                     SizeFlagsVertical = SizeFlags.ShrinkEnd
                 };
@@ -278,7 +280,7 @@ namespace Content.Client.GameObjects.Components.Wires
             {
                 if (status.Value is StatusLightData statusLightData)
                 {
-                    _statusContainer.AddChild(new StatusLight(statusLightData));
+                    _statusContainer.AddChild(new StatusLight(statusLightData, _resourceCache));
                 }
                 else
                 {
@@ -305,18 +307,20 @@ namespace Content.Client.GameObjects.Components.Wires
 
         private sealed class WireControl : Control
         {
+            private IResourceCache _resourceCache;
+
             private const string TextureContact = "/Textures/Interface/WireHacking/contact.svg.96dpi.png";
 
             public event Action WireClicked;
             public event Action ContactsClicked;
 
-            public WireControl(WireColor color, WireLetter letter, bool isCut, bool flip, bool mirror, int type)
+            public WireControl(WireColor color, WireLetter letter, bool isCut, bool flip, bool mirror, int type, IResourceCache resourceCache)
             {
+                _resourceCache = resourceCache;
+
                 SizeFlagsHorizontal = SizeFlags.ShrinkCenter;
                 MouseFilter = MouseFilterMode.Stop;
 
-                var resourceCache = IoCManager.Resolve<IResourceCache>();
-
                 var layout = new LayoutContainer();
                 AddChild(layout);
 
@@ -326,7 +330,7 @@ namespace Content.Client.GameObjects.Components.Wires
                     SizeFlagsVertical = SizeFlags.ShrinkEnd,
                     SizeFlagsHorizontal = SizeFlags.ShrinkCenter,
                     Align = Label.AlignMode.Center,
-                    FontOverride = resourceCache.GetFont("/Fonts/NotoSansDisplay/NotoSansDisplay-Bold.ttf", 12),
+                    FontOverride = _resourceCache.GetFont("/Fonts/NotoSansDisplay/NotoSansDisplay-Bold.ttf", 12),
                     FontColorOverride = Color.Gray,
                     ToolTip = letter.Name(),
                     MouseFilter = MouseFilterMode.Stop
@@ -337,7 +341,7 @@ namespace Content.Client.GameObjects.Components.Wires
                 LayoutContainer.SetGrowVertical(greek, LayoutContainer.GrowDirection.Begin);
                 LayoutContainer.SetGrowHorizontal(greek, LayoutContainer.GrowDirection.Both);
 
-                var contactTexture = resourceCache.GetTexture(TextureContact);
+                var contactTexture = _resourceCache.GetTexture(TextureContact);
                 var contact1 = new TextureRect
                 {
                     Texture = contactTexture,
@@ -356,7 +360,7 @@ namespace Content.Client.GameObjects.Components.Wires
                 layout.AddChild(contact2);
                 LayoutContainer.SetPosition(contact2, (0, 60));
 
-                var wire = new WireRender(color, isCut, flip, mirror, type);
+                var wire = new WireRender(color, isCut, flip, mirror, type, _resourceCache);
 
                 layout.AddChild(wire);
                 LayoutContainer.SetPosition(wire, (2, 16));
@@ -420,8 +424,11 @@ namespace Content.Client.GameObjects.Components.Wires
                     "/Textures/Interface/WireHacking/wire_2_copper.svg.96dpi.png"
                 };
 
-                public WireRender(WireColor color, bool isCut, bool flip, bool mirror, int type)
+                private IResourceCache _resourceCache;
+
+                public WireRender(WireColor color, bool isCut, bool flip, bool mirror, int type, IResourceCache resourceCache)
                 {
+                    _resourceCache = resourceCache;
                     _color = color;
                     _isCut = isCut;
                     _flip = flip;
@@ -436,10 +443,8 @@ namespace Content.Client.GameObjects.Components.Wires
 
                 protected override void Draw(DrawingHandleScreen handle)
                 {
-                    var resC = IoCManager.Resolve<IResourceCache>();
-
                     var colorValue = _color.ColorValue();
-                    var tex = resC.GetTexture(_isCut ? TextureCut[_type] : TextureNormal[_type]);
+                    var tex = _resourceCache.GetTexture(_isCut ? TextureCut[_type] : TextureNormal[_type]);
 
                     var l = 0f;
                     var r = tex.Width + l;
@@ -465,7 +470,7 @@ namespace Content.Client.GameObjects.Components.Wires
                     if (_isCut)
                     {
                         var copper = Color.Orange;
-                        var copperTex = resC.GetTexture(TextureCopper[_type]);
+                        var copperTex = _resourceCache.GetTexture(TextureCopper[_type]);
                         handle.DrawTextureRect(copperTex, rect, copper);
                     }
 
@@ -516,9 +521,8 @@ namespace Content.Client.GameObjects.Components.Wires
                 }
             };
 
-            public StatusLight(StatusLightData data)
+            public StatusLight(StatusLightData data, IResourceCache resourceCache)
             {
-                var resC = IoCManager.Resolve<IResourceCache>();
                 var hsv = Color.ToHsv(data.Color);
                 hsv.Z /= 2;
                 var dimColor = Color.FromHsv(hsv);
@@ -530,7 +534,7 @@ namespace Content.Client.GameObjects.Components.Wires
                     {
                         new TextureRect
                         {
-                            Texture = resC.GetTexture(
+                            Texture = resourceCache.GetTexture(
                                 "/Textures/Interface/WireHacking/light_off_base.svg.96dpi.png"),
                             Stretch = TextureRect.StretchMode.KeepCentered,
                             ModulateSelfOverride = dimColor
@@ -540,7 +544,7 @@ namespace Content.Client.GameObjects.Components.Wires
                             ModulateSelfOverride = data.Color.WithAlpha(0.4f),
                             Stretch = TextureRect.StretchMode.KeepCentered,
                             Texture =
-                                resC.GetTexture("/Textures/Interface/WireHacking/light_on_base.svg.96dpi.png"),
+                                resourceCache.GetTexture("/Textures/Interface/WireHacking/light_on_base.svg.96dpi.png"),
                         })
                     }
                 };
@@ -577,7 +581,7 @@ namespace Content.Client.GameObjects.Components.Wires
                     };
                 }
 
-                var font = IoCManager.Resolve<IResourceCache>().GetFont("/Fonts/Boxfont-round/Boxfont Round.ttf", 12);
+                var font = resourceCache.GetFont("/Fonts/Boxfont-round/Boxfont Round.ttf", 12);
 
                 var hBox = new HBoxContainer {SeparationOverride = 4};
                 hBox.AddChild(new Label

Content.Client/GameObjects/EntitySystems/DoAfter/DoAfterSystem.cs

@@ -1,4 +1,4 @@
-#nullable enable
+#nullable enable
 using System.Collections.Generic;
 using System.Linq;
 using Content.Client.GameObjects.Components;
@@ -124,9 +124,7 @@ namespace Content.Client.GameObjects.EntitySystems.DoAfter
 
                     if (doAfter.BreakOnTargetMove)
                     {
-                        var targetEntity = _entityManager.GetEntity(doAfter.TargetUid);
-
-                        if (targetEntity.Transform.Coordinates != doAfter.TargetGrid)
+                        if (_entityManager.TryGetEntity(doAfter.TargetUid, out var targetEntity) && targetEntity.Transform.Coordinates != doAfter.TargetGrid)
                         {
                             comp.Cancel(id, currentTime);
                             continue;

Content.Client/GameObjects/EntitySystems/MeleeWeaponSystem.cs

@@ -6,6 +6,7 @@ using JetBrains.Annotations;
 using Robust.Client.GameObjects;
 using Robust.Client.Interfaces.GameObjects.Components;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components.Timers;
 using Robust.Shared.GameObjects.EntitySystemMessages;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.Timing;
@@ -95,7 +96,7 @@ namespace Content.Client.GameObjects.EntitySystems
                 var newColor = Color.Red * originalColor;
                 sprite.Color = newColor;
 
-                Timer.Spawn(100, () =>
+                hitEntity.SpawnTimer(100, () =>
                 {
                     // Only reset back to the original color if something else didn't change the color in the mean time.
                     if (sprite.Color == newColor)

Content.Client/GameObjects/EntitySystems/StandingStateSystem.cs

@@ -24,12 +24,6 @@ namespace Content.Client.GameObjects.EntitySystems
                 appearance.SetData(RotationVisuals.RotationState, newState);
             }
 
-            if (playSound)
-            {
-                var file = AudioHelpers.GetRandomFileFromSoundCollection("bodyfall");
-                Get<AudioSystem>().Play(file, entity, AudioHelpers.WithVariation(0.25f));
-            }
-
             return true;
         }
 

Content.Client/IgnoredComponents.cs

@@ -33,7 +33,6 @@
             "Door",
             "PoweredLight",
             "Smes",
-            "Powercell",
             "LightBulb",
             "Healing",
             "Catwalk",
@@ -42,6 +41,7 @@
             "HitscanWeaponCapacitor",
             "PowerCell",
             "PowerCellCharger",
+            "PowerCellSlot",
             "WeaponCapacitorCharger",
             "AiController",
             "Computer",
@@ -182,6 +182,7 @@
             "GasCanisterPort",
             "Lung",
             "Cleanable",
+            "Configuration",
             "Brain",
             "PlantHolder",
             "SeedExtractor",
@@ -190,7 +191,27 @@
             "Hoe",
             "Seed",
             "BotanySharp",
-            "PlantSampleTaker"
+            "PlantSampleTaker",
+            "Internals",
+            "GasTank",
+            "BreathMask",
+            "RadiationCollector",
+            "ContainmentFieldGenerator",
+            "ContainmentField",
+            "Emitter",
+            "Singularity",
+            "SingularityGenerator",
+            "EmitterBoltComponent",
+            "ParticleProjectile",
+            "ParticleAcceleratorControlBox",
+            "ParticleAcceleratorEmitter",
+            "ParticleAcceleratorEndCap",
+            "ParticleAcceleratorFuelChamber",
+            "ParticleAcceleratorPowerBox",
+            "BodyBagEntityStorage",
+            "MorgueEntityStorage",
+            "MorgueTray",
+            "CrematoriumEntityStorage",
         };
     }
 }

Content.Client/Instruments/InstrumentMenu.cs

@@ -1,6 +1,7 @@
 using Content.Client.GameObjects.Components.Instruments;
 using Content.Client.UserInterface.Stylesheets;
 using Content.Client.Utility;
+using Content.Shared.GameObjects.EntitySystems;
 using Robust.Client.Audio.Midi;
 using Robust.Client.Graphics.Drawing;
 using Robust.Client.Interfaces.UserInterface;
@@ -176,34 +177,20 @@ namespace Content.Client.Instruments
             var filters = new FileDialogFilters(new FileDialogFilters.Group("mid", "midi"));
             var filename = await _fileDialogManager.OpenFile(filters);
 
-            var instrumentEnt = _owner.Instrument.Owner;
-            var instrument = _owner.Instrument;
-
-            ContainerHelpers.TryGetContainerMan(_owner.Instrument.Owner, out var conMan);
-
-            var localPlayer = IoCManager.Resolve<IPlayerManager>().LocalPlayer;
-
             // The following checks are only in place to prevent players from playing MIDI songs locally.
             // There are equivalents for these checks on the server.
 
             if (string.IsNullOrEmpty(filename)) return;
 
-            // If we don't have a player or controlled entity, we return.
-            if(localPlayer?.ControlledEntity == null) return;
-
-            // If the instrument is handheld and we're not holding it, we return.
-            if((instrument.Handheld && (conMan == null
-                                        || conMan.Owner != localPlayer.ControlledEntity))) return;
-
-            // We check that we're in range unobstructed just in case.
-            if (!localPlayer.InRangeUnobstructed(instrumentEnt)) return;
-
             if (!_midiManager.IsMidiFile(filename))
             {
                 Logger.Warning($"Not a midi file! Chosen file: {filename}");
                 return;
             }
 
+            if (!PlayCheck())
+                return;
+
             MidiStopButtonOnPressed(null);
             await Timer.Delay(100);
             if (!_owner.Instrument.OpenMidi(filename)) return;
@@ -216,6 +203,9 @@ namespace Content.Client.Instruments
         {
             if (obj.Pressed)
             {
+                if (!PlayCheck())
+                    return;
+
                 MidiStopButtonOnPressed(null);
                 _owner.Instrument.OpenInput();
             }
@@ -223,6 +213,26 @@ namespace Content.Client.Instruments
                 _owner.Instrument.CloseInput();
         }
 
+        private bool PlayCheck()
+        {
+            var instrumentEnt = _owner.Instrument.Owner;
+            var instrument = _owner.Instrument;
+
+            ContainerHelpers.TryGetContainerMan(_owner.Instrument.Owner, out var conMan);
+
+            var localPlayer = IoCManager.Resolve<IPlayerManager>().LocalPlayer;
+
+            // If we don't have a player or controlled entity, we return.
+            if(localPlayer?.ControlledEntity == null) return false;
+
+            // If the instrument is handheld and we're not holding it, we return.
+            if((instrument.Handheld && (conMan == null
+                                        || conMan.Owner != localPlayer.ControlledEntity))) return false;
+
+            // We check that we're in range unobstructed just in case.
+            return localPlayer.InRangeUnobstructed(instrumentEnt, predicate:(e) => e == instrumentEnt || e == localPlayer.ControlledEntity);
+        }
+
         private void MidiStopButtonOnPressed(BaseButton.ButtonEventArgs obj)
         {
             MidiPlaybackSetButtonsDisabled(true);

Content.Client/UserInterface/AdminMenu/AdminMenuWindow.cs

@@ -37,7 +37,7 @@ namespace Content.Client.UserInterface.AdminMenu
         {
             new KickCommandButton(),
             new DirectCommandButton("Admin Ghost", "aghost"),
-            //TODO: teleport
+            new TeleportCommandButton(),
         };
         private readonly List<CommandButton> _adminbusButtons = new List<CommandButton>
         {
@@ -534,6 +534,30 @@ namespace Content.Client.UserInterface.AdminMenu
             }
         }
 
+        private class TeleportCommandButton : UICommandButton
+        {
+            public override string Name => "Teleport";
+            public override string RequiredCommand => "tpto";
+
+            private readonly CommandUIDropDown _playerDropDown = new CommandUIDropDown
+            {
+                Name = "Player",
+                GetData = () => IoCManager.Resolve<IPlayerManager>().Sessions.ToList<object>(),
+                GetDisplayName = (obj) => $"{((IPlayerSession) obj).Name} ({((IPlayerSession) obj).AttachedEntity?.Name})",
+                GetValueFromData = (obj) => ((IPlayerSession) obj).Name,
+            };
+
+            public override List<CommandUIControl> UI => new List<CommandUIControl>
+            {
+                _playerDropDown
+            };
+
+            public override void Submit()
+            {
+                IoCManager.Resolve<IClientConsole>().ProcessCommand($"tpto \"{_playerDropDown.GetValue()}\"");
+            }
+        }
+
         private class AddAtmosCommandButton : UICommandButton
         {
             public override string Name => "Add Atmos";

Content.Client/UserInterface/Atmos/GasTank/GasTankBoundUserInterface.cs

@@ -0,0 +1,50 @@
+using Content.Shared.GameObjects.Components.Atmos.GasTank;
+using JetBrains.Annotations;
+using Robust.Client.GameObjects.Components.UserInterface;
+using Robust.Shared.GameObjects.Components.UserInterface;
+
+namespace Content.Client.UserInterface.Atmos.GasTank
+{
+    [UsedImplicitly]
+    public class GasTankBoundUserInterface
+        : BoundUserInterface
+    {
+        public GasTankBoundUserInterface(ClientUserInterfaceComponent owner, object uiKey) :
+            base(owner, uiKey)
+        {
+        }
+
+        private GasTankWindow _window;
+
+        public void SetOutputPressure(in float value)
+        {
+            SendMessage(new GasTankSetPressureMessage {Pressure = value});
+        }
+
+        public void ToggleInternals()
+        {
+            SendMessage(new GasTankToggleInternalsMessage());
+        }
+
+        protected override void Open()
+        {
+            base.Open();
+            _window = new GasTankWindow(this);
+            _window.OnClose += Close;
+            _window.OpenCentered();
+        }
+
+        protected override void UpdateState(BoundUserInterfaceState state)
+        {
+            base.UpdateState(state);
+            _window.UpdateState((GasTankBoundUserInterfaceState) state);
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            base.Dispose(disposing);
+
+            _window.Close();
+        }
+    }
+}

Content.Client/UserInterface/Atmos/GasTank/GasTankWindow.cs

@@ -0,0 +1,235 @@
+using Content.Client.UserInterface.Stylesheets;
+using Content.Client.Utility;
+using Content.Shared.GameObjects.Components.Atmos.GasTank;
+using Robust.Client.Graphics.Drawing;
+using Robust.Client.Interfaces.ResourceManagement;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Shared.IoC;
+using Robust.Shared.Localization;
+using Robust.Shared.Maths;
+
+namespace Content.Client.UserInterface.Atmos.GasTank
+{
+    public class GasTankWindow
+        : BaseWindow
+    {
+        private GasTankBoundUserInterface _owner;
+        private readonly Label _lblName;
+        private readonly VBoxContainer _topContainer;
+        private readonly Control _contentContainer;
+
+
+        private readonly IResourceCache _resourceCache = default!;
+        private readonly RichTextLabel _lblPressure;
+        private readonly FloatSpinBox _spbPressure;
+        private readonly RichTextLabel _lblInternals;
+        private readonly Button _btnInternals;
+
+        public GasTankWindow(GasTankBoundUserInterface owner)
+        {
+            TextureButton btnClose;
+            _resourceCache = IoCManager.Resolve<IResourceCache>();
+            _owner = owner;
+            var rootContainer = new LayoutContainer {Name = "GasTankRoot"};
+            AddChild(rootContainer);
+
+            MouseFilter = MouseFilterMode.Stop;
+
+            var panelTex = _resourceCache.GetTexture("/Textures/Interface/Nano/button.svg.96dpi.png");
+            var back = new StyleBoxTexture
+            {
+                Texture = panelTex,
+                Modulate = Color.FromHex("#25252A"),
+            };
+
+            back.SetPatchMargin(StyleBox.Margin.All, 10);
+
+            var topPanel = new PanelContainer
+            {
+                PanelOverride = back,
+                MouseFilter = MouseFilterMode.Pass
+            };
+
+            var bottomWrap = new LayoutContainer
+            {
+                Name = "BottomWrap"
+            };
+
+            rootContainer.AddChild(topPanel);
+            rootContainer.AddChild(bottomWrap);
+
+            LayoutContainer.SetAnchorPreset(topPanel, LayoutContainer.LayoutPreset.Wide);
+            LayoutContainer.SetMarginBottom(topPanel, -85);
+
+            LayoutContainer.SetAnchorPreset(bottomWrap, LayoutContainer.LayoutPreset.VerticalCenterWide);
+            LayoutContainer.SetGrowHorizontal(bottomWrap, LayoutContainer.GrowDirection.Both);
+
+
+            var topContainerWrap = new VBoxContainer
+            {
+                Children =
+                {
+                    (_topContainer = new VBoxContainer()),
+                    new Control {CustomMinimumSize = (0, 110)}
+                }
+            };
+
+            rootContainer.AddChild(topContainerWrap);
+
+            LayoutContainer.SetAnchorPreset(topContainerWrap, LayoutContainer.LayoutPreset.Wide);
+
+            var font = _resourceCache.GetFont("/Fonts/Boxfont-round/Boxfont Round.ttf", 13);
+
+            var topRow = new MarginContainer
+            {
+                MarginLeftOverride = 4,
+                MarginTopOverride = 2,
+                MarginRightOverride = 12,
+                MarginBottomOverride = 2,
+                Children =
+                {
+                    new HBoxContainer
+                    {
+                        Children =
+                        {
+                            (_lblName = new Label
+                            {
+                                Text = Loc.GetString("Gas Tank"),
+                                FontOverride = font,
+                                FontColorOverride = StyleNano.NanoGold,
+                                SizeFlagsVertical = SizeFlags.ShrinkCenter
+                            }),
+                            new Control
+                            {
+                                CustomMinimumSize = (20, 0),
+                                SizeFlagsHorizontal = SizeFlags.Expand
+                            },
+                            (btnClose = new TextureButton
+                            {
+                                StyleClasses = {SS14Window.StyleClassWindowCloseButton},
+                                SizeFlagsVertical = SizeFlags.ShrinkCenter
+                            })
+                        }
+                    }
+                }
+            };
+
+            var middle = new PanelContainer
+            {
+                PanelOverride = new StyleBoxFlat {BackgroundColor = Color.FromHex("#202025")},
+                Children =
+                {
+                    new MarginContainer
+                    {
+                        MarginLeftOverride = 8,
+                        MarginRightOverride = 8,
+                        MarginTopOverride = 4,
+                        MarginBottomOverride = 4,
+                        Children =
+                        {
+                            (_contentContainer = new VBoxContainer())
+                        }
+                    }
+                }
+            };
+
+            _topContainer.AddChild(topRow);
+            _topContainer.AddChild(new PanelContainer
+            {
+                CustomMinimumSize = (0, 2),
+                PanelOverride = new StyleBoxFlat {BackgroundColor = Color.FromHex("#525252ff")}
+            });
+            _topContainer.AddChild(middle);
+            _topContainer.AddChild(new PanelContainer
+            {
+                CustomMinimumSize = (0, 2),
+                PanelOverride = new StyleBoxFlat {BackgroundColor = Color.FromHex("#525252ff")}
+            });
+
+
+            _lblPressure = new RichTextLabel();
+            _contentContainer.AddChild(_lblPressure);
+
+            //internals
+            _lblInternals = new RichTextLabel
+                {CustomMinimumSize = (200, 0), SizeFlagsVertical = SizeFlags.ShrinkCenter};
+            _btnInternals = new Button {Text = Loc.GetString("Toggle")};
+
+            _contentContainer.AddChild(
+                new MarginContainer
+                {
+                    MarginTopOverride = 7,
+                    Children =
+                    {
+                        new HBoxContainer
+                        {
+                            Children = {_lblInternals, _btnInternals}
+                        }
+                    }
+                });
+
+            // Separator
+            _contentContainer.AddChild(new Control
+            {
+                CustomMinimumSize = new Vector2(0, 10)
+            });
+
+            _contentContainer.AddChild(new Label
+            {
+                Text = Loc.GetString("Output Pressure"),
+                Align = Label.AlignMode.Center
+            });
+            _spbPressure = new FloatSpinBox {IsValid = f => f >= 0 || f <= 3000};
+            _contentContainer.AddChild(
+                new MarginContainer
+                {
+                    MarginRightOverride = 25,
+                    MarginLeftOverride = 25,
+                    MarginBottomOverride = 7,
+                    Children =
+                    {
+                        _spbPressure
+                    }
+                }
+            );
+
+            // Handlers
+            _spbPressure.OnValueChanged += args =>
+            {
+                _owner.SetOutputPressure(args.Value);
+            };
+
+            _btnInternals.OnPressed += args =>
+            {
+                _owner.ToggleInternals();
+            };
+
+            btnClose.OnPressed += _ => Close();
+        }
+
+        public void UpdateState(GasTankBoundUserInterfaceState state)
+        {
+            _lblPressure.SetMarkup(Loc.GetString("Pressure: {0:0.##} kPa", state.TankPressure));
+            _btnInternals.Disabled = !state.CanConnectInternals;
+            _lblInternals.SetMarkup(Loc.GetString("Internals: [color={0}]{1}[/color]",
+                state.InternalsConnected ? "green" : "red",
+                state.InternalsConnected ? "Connected" : "Disconnected"));
+            if (state.OutputPressure.HasValue)
+            {
+                _spbPressure.Value = state.OutputPressure.Value;
+            }
+        }
+
+        protected override DragMode GetDragModeFor(Vector2 relativeMousePos)
+        {
+            return DragMode.Move;
+        }
+
+        protected override bool HasPoint(Vector2 point)
+        {
+            return false;
+        }
+    }
+}

Content.Client/UserInterface/HandButton.cs

@@ -1,15 +1,25 @@
 using Content.Shared.GameObjects.Components.Items;
 using Robust.Client.Graphics;
+using Robust.Client.UserInterface.Controls;
 
 namespace Content.Client.UserInterface
 {
     public class HandButton : ItemSlotButton
     {
-        public HandButton(Texture texture, Texture storageTexture, HandLocation location) : base(texture, storageTexture)
+        public HandButton(Texture texture, Texture storageTexture, Texture blockedTexture, HandLocation location) : base(texture, storageTexture)
         {
             Location = location;
+
+            AddChild(Blocked = new TextureRect
+            {
+                Texture = blockedTexture,
+                TextureScale = (2, 2),
+                MouseFilter = MouseFilterMode.Stop,
+                Visible = false
+            });
         }
 
         public HandLocation Location { get; }
+        public TextureRect Blocked { get; }
     }
 }

Content.Client/UserInterface/HandsGui.cs

@@ -111,7 +111,8 @@ namespace Content.Client.UserInterface
         {
             var buttonTexture = HandTexture(buttonLocation);
             var storageTexture = _resourceCache.GetTexture("/Textures/Interface/Inventory/back.png");
-            var button = new HandButton(buttonTexture, storageTexture, buttonLocation);
+            var blockedTexture = _resourceCache.GetTexture("/Textures/Interface/Inventory/blocked.png");
+            var button = new HandButton(buttonTexture, storageTexture, blockedTexture, buttonLocation);
             var slot = hand.Name;
 
             button.OnPressed += args => HandKeyBindDown(args, slot);

Content.Client/UserInterface/ParticleAccelerator/ParticleAcceleratorBoundUserInterface.cs

@@ -0,0 +1,52 @@
+using Content.Shared.GameObjects.Components;
+using JetBrains.Annotations;
+using Robust.Client.GameObjects.Components.UserInterface;
+using Robust.Shared.GameObjects.Components.UserInterface;
+
+namespace Content.Client.ParticleAccelerator
+{
+    public class ParticleAcceleratorBoundUserInterface : BoundUserInterface
+    {
+        private ParticleAcceleratorControlMenu _menu;
+
+        public ParticleAcceleratorBoundUserInterface([NotNull] ClientUserInterfaceComponent owner, [NotNull] object uiKey) : base(owner, uiKey)
+        {
+        }
+
+        protected override void Open()
+        {
+            base.Open();
+
+            _menu = new ParticleAcceleratorControlMenu(this);
+            _menu.OnClose += Close;
+            _menu.OpenCentered();
+        }
+
+        public void SendEnableMessage(bool enable)
+        {
+            SendMessage(new ParticleAcceleratorSetEnableMessage(enable));
+        }
+
+        public void SendPowerStateMessage(ParticleAcceleratorPowerState state)
+        {
+            SendMessage(new ParticleAcceleratorSetPowerStateMessage(state));
+        }
+
+        public void SendScanPartsMessage()
+        {
+            SendMessage(new ParticleAcceleratorRescanPartsMessage());
+        }
+
+        protected override void UpdateState(BoundUserInterfaceState state)
+        {
+            _menu.DataUpdate((ParticleAcceleratorUIState) state);
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            base.Dispose(disposing);
+
+            _menu.Close();
+        }
+    }
+}

Content.Client/UserInterface/ParticleAccelerator/ParticleAcceleratorControlMenu.cs

@@ -0,0 +1,545 @@
+using System;
+using Content.Client.Animations;
+using Content.Client.UserInterface;
+using Content.Client.UserInterface.Stylesheets;
+using Content.Client.Utility;
+using Content.Shared.GameObjects.Components;
+using Robust.Client.Animations;
+using Robust.Client.Graphics;
+using Robust.Client.Graphics.Drawing;
+using Robust.Client.Graphics.Shaders;
+using Robust.Client.Interfaces.ResourceManagement;
+using Robust.Client.ResourceManagement;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Shared.IoC;
+using Robust.Shared.Localization;
+using Robust.Shared.Maths;
+using Robust.Shared.Noise;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Timing;
+
+namespace Content.Client.ParticleAccelerator
+{
+    public sealed class ParticleAcceleratorControlMenu : BaseWindow
+    {
+        private ShaderInstance _greyScaleShader;
+
+        private readonly ParticleAcceleratorBoundUserInterface Owner;
+
+        private readonly Label _drawLabel;
+        private readonly NoiseGenerator _drawNoiseGenerator;
+        private readonly Button _onButton;
+        private readonly Button _offButton;
+        private readonly Button _scanButton;
+        private readonly Label _statusLabel;
+        private readonly SpinBox _stateSpinBox;
+
+        private readonly VBoxContainer _alarmControl;
+        private readonly Animation _alarmControlAnimation;
+
+        private readonly PASegmentControl _endCapTexture;
+        private readonly PASegmentControl _fuelChamberTexture;
+        private readonly PASegmentControl _controlBoxTexture;
+        private readonly PASegmentControl _powerBoxTexture;
+        private readonly PASegmentControl _emitterCenterTexture;
+        private readonly PASegmentControl _emitterRightTexture;
+        private readonly PASegmentControl _emitterLeftTexture;
+
+        private float _time;
+        private int _lastDraw;
+        private int _lastReceive;
+
+        private bool _blockSpinBox;
+        private bool _assembled;
+        private bool _shouldContinueAnimating;
+
+        public ParticleAcceleratorControlMenu(ParticleAcceleratorBoundUserInterface owner)
+        {
+            _greyScaleShader = IoCManager.Resolve<IPrototypeManager>().Index<ShaderPrototype>("Greyscale").Instance();
+
+            Owner = owner;
+            _drawNoiseGenerator = new NoiseGenerator(NoiseGenerator.NoiseType.Fbm);
+            _drawNoiseGenerator.SetFrequency(0.5f);
+
+            var resourceCache = IoCManager.Resolve<IResourceCache>();
+            var font = resourceCache.GetFont("/Fonts/Boxfont-round/Boxfont Round.ttf", 13);
+            var panelTex = resourceCache.GetTexture("/Textures/Interface/Nano/button.svg.96dpi.png");
+
+            MouseFilter = MouseFilterMode.Stop;
+
+            _alarmControlAnimation = new Animation
+            {
+                Length = TimeSpan.FromSeconds(1),
+                AnimationTracks =
+                {
+                    new AnimationTrackControlProperty
+                    {
+                        Property = nameof(Control.Visible),
+                        KeyFrames =
+                        {
+                            new AnimationTrackProperty.KeyFrame(true, 0),
+                            new AnimationTrackProperty.KeyFrame(false, 0.75f),
+                        }
+                    }
+                }
+            };
+
+            var back = new StyleBoxTexture
+            {
+                Texture = panelTex,
+                Modulate = Color.FromHex("#25252A"),
+            };
+            back.SetPatchMargin(StyleBox.Margin.All, 10);
+
+            var back2 = new StyleBoxTexture(back)
+            {
+                Modulate = Color.FromHex("#202023")
+            };
+
+            AddChild(new PanelContainer
+            {
+                PanelOverride = back,
+                MouseFilter = MouseFilterMode.Pass
+            });
+
+            _stateSpinBox = new SpinBox
+            {
+                Value = 0,
+            };
+            _stateSpinBox.IsValid = StrengthSpinBoxValid;
+            _stateSpinBox.InitDefaultButtons();
+            _stateSpinBox.ValueChanged += PowerStateChanged;
+            _stateSpinBox.LineEditDisabled = true;
+
+            _offButton = new Button
+            {
+                ToggleMode = false,
+                Text = "Off",
+                StyleClasses = {StyleBase.ButtonOpenRight},
+            };
+            _offButton.OnPressed += args => owner.SendEnableMessage(false);
+
+            _onButton = new Button
+            {
+                ToggleMode = false,
+                Text = "On",
+                StyleClasses = {StyleBase.ButtonOpenLeft},
+            };
+            _onButton.OnPressed += args => owner.SendEnableMessage(true);
+
+            var closeButton = new TextureButton
+            {
+                StyleClasses = {"windowCloseButton"},
+                SizeFlagsHorizontal = SizeFlags.ShrinkEnd
+            };
+            closeButton.OnPressed += args => Close();
+
+            var serviceManual = new Label
+            {
+                SizeFlagsHorizontal = SizeFlags.ShrinkCenter,
+                StyleClasses = {StyleBase.StyleClassLabelSubText},
+                Text = Loc.GetString("Refer to p.132 of service manual")
+            };
+            _drawLabel = new Label();
+            var imgSize = new Vector2(32, 32);
+            AddChild(new VBoxContainer
+            {
+                Children =
+                {
+                    new MarginContainer
+                    {
+                        MarginLeftOverride = 2,
+                        MarginTopOverride = 2,
+                        Children =
+                        {
+                            new Label
+                            {
+                                Text = Loc.GetString("Mark 2 Particle Accelerator"),
+                                FontOverride = font,
+                                FontColorOverride = StyleNano.NanoGold,
+                            },
+                            new MarginContainer
+                            {
+                                MarginRightOverride = 8,
+                                Children =
+                                {
+                                    closeButton
+                                }
+                            }
+                        }
+                    },
+                    new PanelContainer
+                    {
+                        PanelOverride = new StyleBoxFlat {BackgroundColor = StyleNano.NanoGold},
+                        CustomMinimumSize = (0, 2),
+                    },
+                    new Control
+                    {
+                        CustomMinimumSize = (0, 4)
+                    },
+
+                    new HBoxContainer
+                    {
+                        SizeFlagsVertical = SizeFlags.FillExpand,
+                        Children =
+                        {
+                            new MarginContainer
+                            {
+                                MarginLeftOverride = 4,
+                                Children =
+                                {
+                                    new VBoxContainer
+                                    {
+                                        SizeFlagsHorizontal = SizeFlags.FillExpand,
+                                        Children =
+                                        {
+                                            new HBoxContainer
+                                            {
+                                                Children =
+                                                {
+                                                    new Label
+                                                    {
+                                                        Text = Loc.GetString("Power: "),
+                                                        SizeFlagsHorizontal = SizeFlags.Expand
+                                                    },
+                                                    _offButton,
+                                                    _onButton
+                                                }
+                                            },
+                                            new HBoxContainer
+                                            {
+                                                Children =
+                                                {
+                                                    new Label
+                                                    {
+                                                        Text = Loc.GetString("Strength: "),
+                                                        SizeFlagsHorizontal = SizeFlags.Expand
+                                                    },
+                                                    _stateSpinBox
+                                                }
+                                            },
+                                            new Control
+                                            {
+                                                CustomMinimumSize = (0, 10),
+                                            },
+                                            _drawLabel,
+                                            new Control
+                                            {
+                                                SizeFlagsVertical = SizeFlags.Expand
+                                            },
+                                            (_alarmControl = new VBoxContainer
+                                            {
+                                                Children =
+                                                {
+                                                    new Label
+                                                    {
+                                                        Text = Loc.GetString("PARTICLE STRENGTH\nLIMITER FAILURE"),
+                                                        FontColorOverride = Color.Red,
+                                                        Align = Label.AlignMode.Center
+                                                    },
+                                                    serviceManual
+                                                }
+                                            }),
+                                        }
+                                    }
+                                }
+                            },
+                            new VBoxContainer
+                            {
+                                SizeFlagsHorizontal = SizeFlags.FillExpand,
+                                Children =
+                                {
+                                    (_statusLabel = new Label
+                                    {
+                                        SizeFlagsHorizontal = SizeFlags.ShrinkCenter
+                                    }),
+                                    new Control
+                                    {
+                                        CustomMinimumSize = (0, 20)
+                                    },
+                                    new PanelContainer
+                                    {
+                                        SizeFlagsHorizontal = SizeFlags.ShrinkCenter,
+                                        PanelOverride = back2,
+                                        Children =
+                                        {
+                                            new GridContainer
+                                            {
+                                                Columns = 3,
+                                                VSeparationOverride = 0,
+                                                HSeparationOverride = 0,
+                                                Children =
+                                                {
+                                                    new Control {CustomMinimumSize = imgSize},
+                                                    (_endCapTexture = Segment("end_cap")),
+                                                    new Control {CustomMinimumSize = imgSize},
+                                                    (_controlBoxTexture = Segment("control_box")),
+                                                    (_fuelChamberTexture = Segment("fuel_chamber")),
+                                                    new Control {CustomMinimumSize = imgSize},
+                                                    new Control {CustomMinimumSize = imgSize},
+                                                    (_powerBoxTexture = Segment("power_box")),
+                                                    new Control {CustomMinimumSize = imgSize},
+                                                    (_emitterLeftTexture = Segment("emitter_left")),
+                                                    (_emitterCenterTexture = Segment("emitter_center")),
+                                                    (_emitterRightTexture = Segment("emitter_right")),
+                                                }
+                                            }
+                                        }
+                                    },
+                                    (_scanButton = new Button
+                                    {
+                                        Text = Loc.GetString("Scan Parts"),
+                                        SizeFlagsHorizontal = SizeFlags.ShrinkCenter
+                                    })
+                                }
+                            }
+                        }
+                    },
+                    new StripeBack
+                    {
+                        Children =
+                        {
+                            new MarginContainer
+                            {
+                                MarginLeftOverride = 4,
+                                MarginTopOverride = 4,
+                                MarginBottomOverride = 4,
+                                Children =
+                                {
+                                    new Label
+                                    {
+                                        Text = Loc.GetString("Ensure containment field is active before operation"),
+                                        SizeFlagsHorizontal = SizeFlags.ShrinkCenter,
+                                        StyleClasses = {StyleBase.StyleClassLabelSubText},
+                                    }
+                                }
+                            }
+                        }
+                    },
+                    new MarginContainer
+                    {
+                        MarginLeftOverride = 12,
+                        Children =
+                        {
+                            new HBoxContainer
+                            {
+                                Children =
+                                {
+                                    new Label
+                                    {
+                                        Text = "FOO-BAR-BAZ",
+                                        StyleClasses = {StyleBase.StyleClassLabelSubText}
+                                    }
+                                }
+                            }
+                        }
+                    },
+                }
+            });
+
+            _scanButton.OnPressed += args => Owner.SendScanPartsMessage();
+
+            _alarmControl.AnimationCompleted += s =>
+            {
+                if (_shouldContinueAnimating)
+                {
+                    _alarmControl.PlayAnimation(_alarmControlAnimation, "warningAnim");
+                }
+                else
+                {
+                    _alarmControl.Visible = false;
+                }
+            };
+
+            PASegmentControl Segment(string name)
+            {
+                return new PASegmentControl(this, resourceCache, name);
+            }
+        }
+
+        private bool StrengthSpinBoxValid(int n)
+        {
+            return (n >= 0 && n <= 4 && !_blockSpinBox);
+        }
+
+        private void PowerStateChanged(object sender, ValueChangedEventArgs e)
+        {
+            ParticleAcceleratorPowerState newState;
+            switch (e.Value)
+            {
+                case 0:
+                    newState = ParticleAcceleratorPowerState.Standby;
+                    break;
+                case 1:
+                    newState = ParticleAcceleratorPowerState.Level0;
+                    break;
+                case 2:
+                    newState = ParticleAcceleratorPowerState.Level1;
+                    break;
+                case 3:
+                    newState = ParticleAcceleratorPowerState.Level2;
+                    break;
+                case 4:
+                    newState = ParticleAcceleratorPowerState.Level3;
+                    break;
+                default:
+                    return;
+            }
+
+            Owner.SendPowerStateMessage(newState);
+        }
+
+        protected override DragMode GetDragModeFor(Vector2 relativeMousePos)
+        {
+            return DragMode.Move;
+        }
+
+        protected override Vector2 CalculateMinimumSize()
+        {
+            return (400, 300);
+        }
+
+        public void DataUpdate(ParticleAcceleratorUIState uiState)
+        {
+            _assembled = uiState.Assembled;
+            UpdateUI(uiState.Assembled, uiState.InterfaceBlock, uiState.Enabled,
+                uiState.WirePowerBlock);
+            _statusLabel.Text = Loc.GetString($"Status: {(uiState.Assembled ? "Operational" : "Incomplete")}");
+            UpdatePowerState(uiState.State, uiState.Enabled, uiState.Assembled,
+                uiState.MaxLevel);
+            UpdatePreview(uiState);
+            _lastDraw = uiState.PowerDraw;
+            _lastReceive = uiState.PowerReceive;
+        }
+
+        private void UpdatePowerState(ParticleAcceleratorPowerState state, bool enabled, bool assembled,
+            ParticleAcceleratorPowerState maxState)
+        {
+            _stateSpinBox.OverrideValue(state switch
+            {
+                ParticleAcceleratorPowerState.Standby => 0,
+                ParticleAcceleratorPowerState.Level0 => 1,
+                ParticleAcceleratorPowerState.Level1 => 2,
+                ParticleAcceleratorPowerState.Level2 => 3,
+                ParticleAcceleratorPowerState.Level3 => 4,
+                _ => 0
+            });
+
+
+            _shouldContinueAnimating = false;
+            _alarmControl.StopAnimation("warningAnim");
+            _alarmControl.Visible = false;
+            if (maxState == ParticleAcceleratorPowerState.Level3 && enabled == true && assembled == true)
+            {
+                _shouldContinueAnimating = true;
+                _alarmControl.PlayAnimation(_alarmControlAnimation, "warningAnim");
+            }
+        }
+
+        private void UpdateUI(bool assembled, bool blocked, bool enabled, bool powerBlock)
+        {
+            _onButton.Pressed = enabled;
+            _offButton.Pressed = !enabled;
+
+            var cantUse = !assembled || blocked || powerBlock;
+            _onButton.Disabled = cantUse;
+            _offButton.Disabled = cantUse;
+            _scanButton.Disabled = blocked;
+
+            var cantChangeLevel = !assembled || blocked;
+            _stateSpinBox.SetButtonDisabled(cantChangeLevel);
+            _blockSpinBox = cantChangeLevel;
+        }
+
+        private void UpdatePreview(ParticleAcceleratorUIState updateMessage)
+        {
+            _endCapTexture.SetPowerState(updateMessage, updateMessage.EndCapExists);
+            _fuelChamberTexture.SetPowerState(updateMessage, updateMessage.FuelChamberExists);
+            _controlBoxTexture.SetPowerState(updateMessage, true);
+            _powerBoxTexture.SetPowerState(updateMessage, updateMessage.PowerBoxExists);
+            _emitterCenterTexture.SetPowerState(updateMessage, updateMessage.EmitterCenterExists);
+            _emitterLeftTexture.SetPowerState(updateMessage, updateMessage.EmitterLeftExists);
+            _emitterRightTexture.SetPowerState(updateMessage, updateMessage.EmitterRightExists);
+        }
+
+        protected override void FrameUpdate(FrameEventArgs args)
+        {
+            base.FrameUpdate(args);
+
+            if (!_assembled)
+            {
+                _drawLabel.Text = Loc.GetString("Draw: N/A");
+                return;
+            }
+
+            _time += args.DeltaSeconds;
+
+            var watts = 0;
+            if (_lastDraw != 0)
+            {
+                var val = _drawNoiseGenerator.GetNoise(_time);
+                watts = (int) (_lastDraw + val * 5);
+            }
+
+            _drawLabel.Text = Loc.GetString("Draw: {0:##,##0}/{1:##,##0} W", watts, _lastReceive);
+        }
+
+        private sealed class PASegmentControl : Control
+        {
+            private readonly ParticleAcceleratorControlMenu _menu;
+            private readonly string _baseState;
+            private readonly TextureRect _base;
+            private readonly TextureRect _unlit;
+            private readonly RSI _rsi;
+
+            public PASegmentControl(ParticleAcceleratorControlMenu menu, IResourceCache cache, string name)
+            {
+                _menu = menu;
+                _baseState = name;
+                _rsi = cache.GetResource<RSIResource>($"/Textures/Constructible/Power/PA/{name}.rsi").RSI;
+
+                AddChild(_base = new TextureRect {Texture = _rsi[$"{name}c"].Frame0});
+                AddChild(_unlit = new TextureRect());
+            }
+
+            public void SetPowerState(ParticleAcceleratorUIState state, bool exists)
+            {
+                _base.ShaderOverride = exists ? null : _menu._greyScaleShader;
+                _base.ModulateSelfOverride = exists ? (Color?)null : new Color(127, 127, 127);
+
+                if (!state.Enabled || !exists)
+                {
+                    _unlit.Visible = false;
+                    return;
+                }
+
+                _unlit.Visible = true;
+
+                var suffix = state.State switch
+                {
+                    ParticleAcceleratorPowerState.Standby => "_unlitp",
+                    ParticleAcceleratorPowerState.Level0 => "_unlitp0",
+                    ParticleAcceleratorPowerState.Level1 => "_unlitp1",
+                    ParticleAcceleratorPowerState.Level2 => "_unlitp2",
+                    ParticleAcceleratorPowerState.Level3 => "_unlitp3",
+                    _ => ""
+                };
+
+                if (!_rsi.TryGetState(_baseState + suffix, out var rState))
+                {
+                    _unlit.Visible = false;
+                    return;
+                }
+
+                _unlit.Texture = rState.Frame0;
+            }
+
+            protected override Vector2 CalculateMinimumSize()
+            {
+                return _rsi.Size;
+            }
+        }
+    }
+}

Content.IntegrationTests/ContentIntegrationTest.cs

@@ -127,19 +127,26 @@ namespace Content.IntegrationTests
             return grid;
         }
 
-        protected async Task WaitUntil(IntegrationInstance instance, Func<bool> func, int tickStep = 10, int maxTicks = 600)
+        protected async Task WaitUntil(IntegrationInstance instance, Func<bool> func, int maxTicks = 600, int tickStep = 1)
         {
             var ticksAwaited = 0;
             bool passed;
 
+            await instance.WaitIdleAsync();
+
             while (!(passed = func()) && ticksAwaited < maxTicks)
             {
-                await instance.WaitIdleAsync();
-                instance.RunTicks(tickStep);
-                ticksAwaited += tickStep;
+                var ticksToRun = tickStep;
+
+                if (ticksAwaited + tickStep > maxTicks)
+                {
+                    ticksToRun = maxTicks - ticksAwaited;
                 }
 
-            await instance.WaitIdleAsync();
+                await instance.WaitRunTicks(ticksToRun);
+
+                ticksAwaited += ticksToRun;
+            }
 
             Assert.That(passed);
         }

Content.IntegrationTests/Tests/Body/LungTest.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
 using Content.Server.Atmos;
@@ -46,7 +47,7 @@ namespace Content.IntegrationTests.Tests.Body
 
                 var originalOxygen = 2;
                 var originalNitrogen = 8;
-                var breathedPercentage = Atmospherics.BreathPercentage;
+                var breathedPercentage = Atmospherics.BreathVolume / gas.Volume;
 
                 gas.AdjustMoles(Gas.Oxygen, originalOxygen);
                 gas.AdjustMoles(Gas.Nitrogen, originalNitrogen);
@@ -76,7 +77,7 @@ namespace Content.IntegrationTests.Tests.Body
                 lung.Exhale(1, gas);
 
                 var lungOxygenAfterExhale = lung.Air.GetMoles(Gas.Oxygen);
-                var exhaledOxygen = lungOxygenBeforeExhale - lungOxygenAfterExhale;
+                var exhaledOxygen = Math.Abs(lungOxygenBeforeExhale - lungOxygenAfterExhale);
 
                 // Not completely empty
                 Assert.Positive(lung.Air.Gases.Sum());

Content.IntegrationTests/Tests/Buckle/BuckleTest.cs

@@ -14,7 +14,7 @@ using Robust.Shared.Interfaces.Map;
 using Robust.Shared.IoC;
 using Robust.Shared.Map;
 
-namespace Content.IntegrationTests.Tests
+namespace Content.IntegrationTests.Tests.Buckle
 {
     [TestFixture]
     [TestOf(typeof(BuckleComponent))]
@@ -22,7 +22,7 @@ namespace Content.IntegrationTests.Tests
     public class BuckleTest : ContentIntegrationTest
     {
         [Test]
-        public async Task Test()
+        public async Task BuckleUnbuckleCooldownRangeTest()
         {
             var server = StartServerDummyTicker();
 
@@ -31,7 +31,7 @@ namespace Content.IntegrationTests.Tests
             BuckleComponent buckle = null;
             StrapComponent strap = null;
 
-            server.Assert(() =>
+            await server.WaitAssertion(() =>
             {
                 var mapManager = IoCManager.Resolve<IMapManager>();
 
@@ -82,9 +82,9 @@ namespace Content.IntegrationTests.Tests
             });
 
             // Wait enough ticks for the unbuckling cooldown to run out
-            server.RunTicks(60);
+            await server.WaitRunTicks(60);
 
-            server.Assert(() =>
+            await server.WaitAssertion(() =>
             {
                 // Still buckled
                 Assert.True(buckle.Buckled);
@@ -115,9 +115,9 @@ namespace Content.IntegrationTests.Tests
             });
 
             // Wait enough ticks for the unbuckling cooldown to run out
-            server.RunTicks(60);
+            await server.WaitRunTicks(60);
 
-            server.Assert(() =>
+            await server.WaitAssertion(() =>
             {
                 // Still buckled
                 Assert.True(buckle.Buckled);
@@ -159,17 +159,15 @@ namespace Content.IntegrationTests.Tests
                 human.Transform.WorldPosition += (1, 0);
             });
 
-            server.RunTicks(1);
+            await server.WaitRunTicks(1);
 
-            server.Assert(() =>
+            await server.WaitAssertion(() =>
             {
                 // No longer buckled
                 Assert.False(buckle.Buckled);
                 Assert.Null(buckle.BuckledTo);
                 Assert.IsEmpty(strap.BuckledEntities);
             });
-
-            await server.WaitIdleAsync();
         }
 
         [Test]
@@ -177,14 +175,13 @@ namespace Content.IntegrationTests.Tests
         {
             var server = StartServer();
 
-            IEntity human = null;
-            IEntity chair = null;
+            IEntity human;
+            IEntity chair;
             BuckleComponent buckle = null;
-            StrapComponent strap = null;
             HandsComponent hands = null;
             IBody body = null;
 
-            server.Assert(() =>
+            await server.WaitAssertion(() =>
             {
                 var mapManager = IoCManager.Resolve<IMapManager>();
 
@@ -206,7 +203,7 @@ namespace Content.IntegrationTests.Tests
 
                 // Component sanity check
                 Assert.True(human.TryGetComponent(out buckle));
-                Assert.True(chair.TryGetComponent(out strap));
+                Assert.True(chair.HasComponent<StrapComponent>());
                 Assert.True(human.TryGetComponent(out hands));
                 Assert.True(human.TryGetComponent(out body));
 
@@ -226,9 +223,9 @@ namespace Content.IntegrationTests.Tests
                 }
             });
 
-            server.RunTicks(10);
+            await server.WaitRunTicks(10);
 
-            server.Assert(() =>
+            await server.WaitAssertion(() =>
             {
                 // Still buckled
                 Assert.True(buckle.Buckled);
@@ -248,9 +245,9 @@ namespace Content.IntegrationTests.Tests
                 }
             });
 
-            server.RunTicks(10);
+            await server.WaitRunTicks(10);
 
-            server.Assert(() =>
+            await server.WaitAssertion(() =>
             {
                 // Still buckled
                 Assert.True(buckle.Buckled);
@@ -261,8 +258,73 @@ namespace Content.IntegrationTests.Tests
                     Assert.Null(hands.GetItem(slot));
                 }
             });
+        }
 
-            await server.WaitIdleAsync();
+        [Test]
+        public async Task ForceUnbuckleBuckleTest()
+        {
+            var server = StartServer();
+
+            IEntity human = null;
+            IEntity chair = null;
+            BuckleComponent buckle = null;
+
+            await server.WaitAssertion(() =>
+            {
+                var mapManager = IoCManager.Resolve<IMapManager>();
+
+                var mapId = new MapId(1);
+                mapManager.CreateNewMapEntity(mapId);
+
+                var entityManager = IoCManager.Resolve<IEntityManager>();
+                var gridId = new GridId(1);
+                var grid = mapManager.CreateGrid(mapId, gridId);
+                var coordinates = grid.GridEntityId.ToCoordinates();
+                var tileManager = IoCManager.Resolve<ITileDefinitionManager>();
+                var tileId = tileManager["underplating"].TileId;
+                var tile = new Tile(tileId);
+
+                grid.SetTile(coordinates, tile);
+
+                human = entityManager.SpawnEntity("HumanMob_Content", coordinates);
+                chair = entityManager.SpawnEntity("ChairWood", coordinates);
+
+                // Component sanity check
+                Assert.True(human.TryGetComponent(out buckle));
+                Assert.True(chair.HasComponent<StrapComponent>());
+
+                // Buckle
+                Assert.True(buckle.TryBuckle(human, chair));
+                Assert.NotNull(buckle.BuckledTo);
+                Assert.True(buckle.Buckled);
+
+                // Move the buckled entity away
+                human.Transform.LocalPosition += (100, 0);
+            });
+
+            await WaitUntil(server, () => !buckle.Buckled, maxTicks: 10);
+
+            Assert.False(buckle.Buckled);
+
+            await server.WaitAssertion(() =>
+            {
+                // Move the now unbuckled entity back onto the chair
+                human.Transform.LocalPosition -= (100, 0);
+
+                // Buckle
+                Assert.True(buckle.TryBuckle(human, chair));
+                Assert.NotNull(buckle.BuckledTo);
+                Assert.True(buckle.Buckled);
+            });
+
+            await server.WaitRunTicks(60);
+
+            await server.WaitAssertion(() =>
+            {
+                // Still buckled
+                Assert.NotNull(buckle.BuckledTo);
+                Assert.True(buckle.Buckled);
+            });
         }
     }
 }

Content.IntegrationTests/Tests/Commands/RejuvenateTest.cs

@@ -0,0 +1,51 @@
+using System.Threading.Tasks;
+using Content.Server.GlobalVerbs;
+using Content.Shared.Damage;
+using Content.Shared.GameObjects.Components.Damage;
+using NUnit.Framework;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Interfaces.Map;
+using Robust.Shared.IoC;
+using Robust.Shared.Map;
+
+namespace Content.IntegrationTests.Tests.Commands
+{
+    [TestFixture]
+    [TestOf(typeof(RejuvenateVerb))]
+    public class RejuvenateTest : ContentIntegrationTest
+    {
+        [Test]
+        public async Task RejuvenateDeadTest()
+        {
+            var server = StartServerDummyTicker();
+
+            await server.WaitAssertion(() =>
+            {
+                var mapManager = IoCManager.Resolve<IMapManager>();
+
+                mapManager.CreateNewMapEntity(MapId.Nullspace);
+
+                var entityManager = IoCManager.Resolve<IEntityManager>();
+
+                var human = entityManager.SpawnEntity("HumanMob_Content", MapCoordinates.Nullspace);
+
+                // Sanity check
+                Assert.True(human.TryGetComponent(out IDamageableComponent damageable));
+                Assert.That(damageable.CurrentState, Is.EqualTo(DamageState.Alive));
+
+                // Kill the entity
+                damageable.ChangeDamage(DamageClass.Brute, 10000000, true);
+
+                // Check that it is dead
+                Assert.That(damageable.CurrentState, Is.EqualTo(DamageState.Dead));
+
+                // Rejuvenate them
+                RejuvenateVerb.PerformRejuvenate(human);
+
+                // Check that it is alive and with no damage
+                Assert.That(damageable.CurrentState, Is.EqualTo(DamageState.Alive));
+                Assert.That(damageable.TotalDamage, Is.Zero);
+            });
+        }
+    }
+}

Content.IntegrationTests/Tests/Gravity/WeightlessStatusTests.cs

@@ -0,0 +1,96 @@
+using System.Threading.Tasks;
+using Content.Server.GameObjects.Components.Gravity;
+using Content.Server.GameObjects.EntitySystems;
+using Content.Shared.GameObjects.Components.Gravity;
+using Content.Shared.GameObjects.Components.Mobs;
+using Content.Shared.GameObjects.EntitySystems;
+using Content.Shared.Utility;
+using NUnit.Framework;
+using Robust.Server.Interfaces.Timing;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Interfaces.Map;
+using Robust.Shared.Map;
+
+namespace Content.IntegrationTests.Tests.Gravity
+{
+    [TestFixture]
+    [TestOf(typeof(WeightlessSystem))]
+    [TestOf(typeof(GravityGeneratorComponent))]
+    public class WeightlessStatusTests : ContentIntegrationTest
+    {
+        [Test]
+        public async Task WeightlessStatusTest()
+        {
+            var server = StartServer();
+
+            await server.WaitIdleAsync();
+
+            var mapManager = server.ResolveDependency<IMapManager>();
+            var entityManager = server.ResolveDependency<IEntityManager>();
+            var pauseManager = server.ResolveDependency<IPauseManager>();
+            var tileDefinitionManager = server.ResolveDependency<ITileDefinitionManager>();
+
+            IEntity human = null;
+            SharedStatusEffectsComponent statusEffects = null;
+
+            await server.WaitAssertion(() =>
+            {
+                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);
+                var coordinates = grid.ToCoordinates();
+
+                grid.SetTile(coordinates, tile);
+
+                pauseManager.DoMapInitialize(mapId);
+
+                human = entityManager.SpawnEntity("HumanMob_Content", coordinates);
+
+                Assert.True(human.TryGetComponent(out statusEffects));
+            });
+
+            // Let WeightlessSystem and GravitySystem tick
+            await server.WaitRunTicks(1);
+
+            GravityGeneratorComponent gravityGenerator = null;
+
+            await server.WaitAssertion(() =>
+            {
+                // No gravity without a gravity generator
+                Assert.True(statusEffects.Statuses.ContainsKey(StatusEffect.Weightless));
+
+                gravityGenerator = human.EnsureComponent<GravityGeneratorComponent>();
+            });
+
+            // Let WeightlessSystem and GravitySystem tick
+            await server.WaitRunTicks(1);
+
+            await server.WaitAssertion(() =>
+            {
+                Assert.False(statusEffects.Statuses.ContainsKey(StatusEffect.Weightless));
+
+                // Disable the gravity generator
+                var args = new BreakageEventArgs {Owner = human};
+                gravityGenerator.OnBreak(args);
+            });
+
+            await server.WaitRunTicks(1);
+
+            await server.WaitAssertion(() =>
+            {
+                Assert.False(statusEffects.Statuses.ContainsKey(StatusEffect.Weightless));
+            });
+        }
+    }
+}

Content.IntegrationTests/Tests/PowerTest.cs

@@ -1,4 +1,5 @@
 using System.Threading.Tasks;
+using Content.Server.GameObjects.Components;
 using Content.Server.GameObjects.Components.Power;
 using Content.Server.GameObjects.Components.Power.ApcNetComponents;
 using Content.Server.GameObjects.Components.Power.PowerNetComponents;
@@ -34,6 +35,11 @@ namespace Content.IntegrationTests.Tests
                 var consumerEnt1 = entityMan.SpawnEntity("DebugConsumer", grid.ToCoordinates(0, 1));
                 var consumerEnt2 = entityMan.SpawnEntity("DebugConsumer", grid.ToCoordinates(0, 2));
 
+                if (generatorEnt.TryGetComponent(out AnchorableComponent anchorable))
+                {
+                    anchorable.TryAnchor(null, force:true);
+                }
+
                 Assert.That(generatorEnt.TryGetComponent(out supplier));
                 Assert.That(consumerEnt1.TryGetComponent(out consumer1));
                 Assert.That(consumerEnt2.TryGetComponent(out consumer2));

Content.Server/Atmos/GasMixture.cs

@@ -65,6 +65,38 @@ namespace Content.Server.Atmos
             }
         }
 
+        /// <summary>
+        /// Heat capacity ratio of gas mixture
+        /// </summary>
+        [ViewVariables]
+        public float HeatCapacityRatio
+        {
+            get
+            {
+                var delimiterSum = 0f;
+                for (var i = 0; i < Atmospherics.TotalNumberOfGases; i++)
+                {
+                    delimiterSum += _moles[i] / (_atmosphereSystem.GetGas(i).HeatCapacityRatio - 1);
+                }
+                return 1 + TotalMoles / delimiterSum;
+            }
+        }
+
+        public float MolarMass
+        {
+            get
+            {
+                var molarMass = 0f;
+                var totalMoles = TotalMoles;
+                for (var i = 0; i < Atmospherics.TotalNumberOfGases; i++)
+                {
+                    molarMass += _atmosphereSystem.GetGas(i).MolarMass * (_moles[i] / totalMoles);
+                }
+
+                return molarMass;
+            }
+        }
+
         [ViewVariables]
         public float HeatCapacityArchived
         {
@@ -136,14 +168,15 @@ namespace Content.Server.Atmos
         public GasMixture(AtmosphereSystem? atmosphereSystem)
         {
             _atmosphereSystem = atmosphereSystem ?? EntitySystem.Get<AtmosphereSystem>();
+            _moles = new float[_atmosphereSystem.Gases.Count()];
+            _molesArchived = new float[_moles.Length];
         }
 
-        public GasMixture(float volume, AtmosphereSystem? atmosphereSystem = null)
+        public GasMixture(float volume, AtmosphereSystem? atmosphereSystem = null): this(atmosphereSystem)
         {
             if (volume < 0)
                 volume = 0;
             Volume = volume;
-            _atmosphereSystem = atmosphereSystem ?? EntitySystem.Get<AtmosphereSystem>();
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]

Content.Server/Atmos/HighPressureMovementController.cs

@@ -2,6 +2,7 @@
 using System;
 using Content.Server.GameObjects.Components.Atmos;
 using Content.Shared.Atmos;
+using Content.Shared.Physics;
 using Robust.Shared.GameObjects.Components;
 using Robust.Shared.Interfaces.Physics;
 using Robust.Shared.Interfaces.Random;
@@ -13,7 +14,7 @@ using Robust.Shared.Random;
 
 namespace Content.Server.Atmos
 {
-    public class HighPressureMovementController : VirtualController
+    public class HighPressureMovementController : FrictionController
     {
         [Dependency] private IRobustRandom _robustRandom = default!;
         [Dependency] private IPhysicsManager _physicsManager = default!;
@@ -69,17 +70,5 @@ namespace Content.Server.Atmos
                 }
             }
         }
-
-        public override void UpdateAfterProcessing()
-        {
-            base.UpdateAfterProcessing();
-
-            if (ControlledComponent != null && !_physicsManager.IsWeightless(ControlledComponent.Owner.Transform.Coordinates))
-            {
-                LinearVelocity *= 0.85f;
-                if (MathF.Abs(LinearVelocity.Length) < 1f)
-                    Stop();
-            }
-        }
     }
 }

Content.Server/Atmos/TileAtmosphere.cs

@@ -1127,6 +1127,10 @@ namespace Content.Server.Atmos
 
             UpdateVisuals();
 
+            if (!Excited)
+            {
+                _gridAtmosphereComponent.AddActiveTile(this);
+            }
             return true;
         }
 

Content.Server/Content.Server.csproj

@@ -10,6 +10,7 @@
     <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
     <OutputType Condition="'$(FullRelease)' != 'True'">Exe</OutputType>
     <NoWarn>1998</NoWarn>
+    <WarningsAsErrors>CS8604;CS8765</WarningsAsErrors>
   </PropertyGroup>
   <Import Project="..\RobustToolbox\MSBuild\Robust.DefineConstants.targets" />
   <ItemGroup>

Content.Server/DeviceNetwork/DeviceNetwork.cs

@@ -0,0 +1,198 @@
+using Content.Server.Interfaces;
+using Robust.Shared.Interfaces.Random;
+using Robust.Shared.IoC;
+using System.Collections.Generic;
+
+namespace Content.Server.GameObjects.EntitySystems.DeviceNetwork
+{
+    public delegate void OnReceiveNetMessage(int frequency, string sender, IReadOnlyDictionary<string, string> payload, Metadata metadata, bool broadcast);
+
+    public class DeviceNetwork : IDeviceNetwork
+    {
+        private const int PACKAGES_PER_TICK = 30;
+
+        private readonly IRobustRandom _random = IoCManager.Resolve<IRobustRandom>();
+        private readonly Dictionary<int, List<NetworkDevice>> _devices = new Dictionary<int, List<NetworkDevice>>();
+        private readonly Queue<NetworkPackage> _packages = new Queue<NetworkPackage>();
+
+        /// <inheritdoc/>
+        public DeviceNetworkConnection Register(int netId, int frequency, OnReceiveNetMessage messageHandler, bool receiveAll = false)
+        {
+            var address = GenerateValidAddress(netId, frequency);
+
+            var device = new NetworkDevice
+            {
+                Address = address,
+                Frequency = frequency,
+                ReceiveAll = receiveAll,
+                ReceiveNetMessage = messageHandler
+            };
+
+            AddDevice(netId, device);
+
+            return new DeviceNetworkConnection(this, netId, address, frequency);
+        }
+
+        public DeviceNetworkConnection Register(int netId, OnReceiveNetMessage messageHandler, bool receiveAll = false)
+        {
+            return Register(netId, 0, messageHandler, receiveAll);
+        }
+
+        public void Update()
+        {
+            var i = PACKAGES_PER_TICK;
+            while (_packages.Count > 0 && i > 0)
+            {
+                i--;
+
+                var package = _packages.Dequeue();
+
+                if (package.Broadcast)
+                {
+                    BroadcastPackage(package);
+                    continue;
+                }
+
+                SendPackage(package);
+            }
+        }
+
+        public bool EnqueuePackage(int netId, int frequency, string address, IReadOnlyDictionary<string, string> data, string sender, Metadata metadata, bool broadcast = false)
+        {
+            if (!_devices.ContainsKey(netId))
+                return false;
+
+            var package = new NetworkPackage()
+            {
+                NetId = netId,
+                Frequency = frequency,
+                Address = address,
+                Broadcast = broadcast,
+                Data = data,
+                Sender = sender,
+                Metadata = metadata
+            };
+            
+            _packages.Enqueue(package);
+            return true;
+        }
+
+        public void RemoveDevice(int netId, int frequency, string address)
+        {
+            var device = DeviceWithAddress(netId, frequency, address);
+            _devices[netId].Remove(device);
+        }
+
+        public void SetDeviceReceiveAll(int netId, int frequency, string address, bool receiveAll)
+        {
+            var device = DeviceWithAddress(netId, frequency, address);
+            device.ReceiveAll = receiveAll;
+        }
+
+        public bool GetDeviceReceiveAll(int netId, int frequency, string address)
+        {
+            var device = DeviceWithAddress(netId, frequency, address);
+            return device.ReceiveAll;
+        }
+
+        private string GenerateValidAddress(int netId, int frequency)
+        {
+            var unique = false;
+            var devices = DevicesForFrequency(netId, frequency);
+            var address = "";
+
+            while (!unique)
+            {
+                address = _random.Next().ToString("x");
+                unique = !devices.Exists(device => device.Address == address);
+            }
+
+            return address;
+        }
+
+        private void AddDevice(int netId, NetworkDevice networkDevice)
+        {
+            if(!_devices.ContainsKey(netId))
+                _devices[netId] = new List<NetworkDevice>();
+
+            _devices[netId].Add(networkDevice);
+        }
+
+        private List<NetworkDevice> DevicesForFrequency(int netId, int frequency)
+        {
+            if (!_devices.ContainsKey(netId))
+                return new List<NetworkDevice>();
+
+            var result = _devices[netId].FindAll(device => device.Frequency == frequency);
+
+            return result;
+        }
+
+        private NetworkDevice DeviceWithAddress(int netId, int frequency, string address)
+        {
+            var devices = DevicesForFrequency(netId, frequency);
+
+            var device = devices.Find(device => device.Address == address);
+
+            return device;
+        }
+
+        private List<NetworkDevice> DevicesWithReceiveAll(int netId, int frequency)
+        {
+            if (!_devices.ContainsKey(netId))
+                return new List<NetworkDevice>();
+
+            var result = _devices[netId].FindAll(device => device.Frequency == frequency && device.ReceiveAll);
+
+            return result;
+        }
+
+        private void BroadcastPackage(NetworkPackage package)
+        {
+            var devices = DevicesForFrequency(package.NetId, package.Frequency);
+            SendToDevices(devices, package, true);
+        }
+
+        private void SendPackage(NetworkPackage package)
+        {
+            var devices = DevicesWithReceiveAll(package.NetId, package.Frequency);
+            var device = DeviceWithAddress(package.NetId, package.Frequency, package.Address);
+
+            devices.Add(device);
+
+            SendToDevices(devices, package, false);
+        }
+
+        private void SendToDevices(List<NetworkDevice> devices, NetworkPackage package, bool broadcast)
+        {
+            for (var index = 0; index < devices.Count; index++)
+            {
+                var device = devices[index];
+                if (device.Address == package.Sender)
+                    continue;
+
+                device.ReceiveNetMessage(package.Frequency, package.Sender, package.Data, package.Metadata, broadcast);
+            }
+        }
+
+        internal class NetworkDevice
+        {
+            public int Frequency;
+            public string Address;
+            public OnReceiveNetMessage ReceiveNetMessage;
+            public bool ReceiveAll;
+        }
+
+        internal class NetworkPackage
+        {
+            public int NetId;
+            public int Frequency;
+            public string Address;
+            public bool Broadcast;
+            public IReadOnlyDictionary<string, string> Data { get; set; }
+            public Metadata Metadata;
+            public string Sender;
+
+        }
+    }
+}

Content.Server/DeviceNetwork/DeviceNetworkConnection.cs

@@ -0,0 +1,72 @@
+using Content.Server.Interfaces;
+using Robust.Shared.ViewVariables;
+using System.Collections.Generic;
+
+namespace Content.Server.GameObjects.EntitySystems.DeviceNetwork
+{
+    public class DeviceNetworkConnection : IDeviceNetworkConnection
+    {
+        private readonly DeviceNetwork _network;
+        [ViewVariables]
+        private readonly int _netId;
+
+        [ViewVariables]
+        public bool Open { get; internal set; }
+        [ViewVariables]
+        public string Address { get; internal set; }
+        [ViewVariables]
+        public int Frequency { get; internal set; }
+
+        [ViewVariables]
+        public bool RecieveAll
+        {
+            get => _network.GetDeviceReceiveAll(_netId, Frequency, Address);
+            set => _network.SetDeviceReceiveAll(_netId, Frequency, Address, value);
+        }
+
+        public DeviceNetworkConnection(DeviceNetwork network, int netId, string address, int frequency)
+        {
+            _network = network;
+            _netId = netId;
+            Open = true;
+            Address = address;
+            Frequency = frequency;
+        }
+
+        public bool Send(int frequency, string address, IReadOnlyDictionary<string, string> payload, Metadata metadata)
+        {
+            return Open && _network.EnqueuePackage(_netId, frequency, address, payload, Address, metadata);
+        }
+
+        public bool Send(int frequency, string address, Dictionary<string, string> payload)
+        {
+            return Send(frequency, address, payload);
+        }
+
+        public bool Send(string address, Dictionary<string, string> payload)
+        {
+            return Send(0, address, payload);
+        }
+
+        public bool Broadcast(int frequency, IReadOnlyDictionary<string, string> payload, Metadata metadata)
+        {
+            return Open && _network.EnqueuePackage(_netId, frequency, "", payload, Address, metadata, true);
+        }
+
+        public bool Broadcast(int frequency, Dictionary<string, string> payload)
+        {
+            return Broadcast(frequency, payload);
+        }
+
+        public bool Broadcast(Dictionary<string, string> payload)
+        {
+            return Broadcast(0, payload);
+        }
+
+        public void Close()
+        {
+            _network.RemoveDevice(_netId, Frequency, Address);
+            Open = false;
+        }
+    }
+}

Content.Server/DeviceNetwork/Metadata.cs

@@ -0,0 +1,20 @@
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+
+namespace Content.Server.GameObjects.EntitySystems.DeviceNetwork
+{
+    public class Metadata : Dictionary<string, object>
+    {
+        public bool TryParseMetadata<T>(string key, [NotNullWhen(true)] out T data)
+        {
+            if(TryGetValue(key, out var value) && value is T typedValue)
+            {
+                data = typedValue;
+                return true;
+            }
+
+            data = default;
+            return false;
+        }
+    }
+}

Content.Server/DeviceNetwork/NetworkConnections/BaseNetworkConnection.cs

@@ -0,0 +1,70 @@
+using Content.Server.Interfaces;
+using Robust.Shared.IoC;
+using Robust.Shared.ViewVariables;
+using System.Collections.Generic;
+
+namespace Content.Server.GameObjects.EntitySystems.DeviceNetwork
+{
+    public abstract class BaseNetworkConnection : IDeviceNetworkConnection
+    {
+        protected readonly DeviceNetworkConnection Connection;
+
+        protected OnReceiveNetMessage MessageHandler;
+
+        [ViewVariables]
+        public bool Open => Connection.Open;
+        [ViewVariables]
+        public string Address => Connection.Address;
+        [ViewVariables]
+        public int Frequency => Connection.Frequency;
+
+        protected BaseNetworkConnection(int netId, int frequency, OnReceiveNetMessage onReceive, bool receiveAll)
+        {
+            var network = IoCManager.Resolve<IDeviceNetwork>();
+            Connection = network.Register(netId, frequency, OnReceiveNetMessage, receiveAll);
+            MessageHandler = onReceive;
+
+        }
+
+        public bool Send(int frequency, string address, Dictionary<string, string> payload)
+        {
+            var data = ManipulatePayload(payload);
+            var metadata = GetMetadata();
+            return Connection.Send(frequency, address, data, metadata);
+        }
+
+        public bool Send(string address, Dictionary<string, string> payload)
+        {
+            return Send(0, address, payload);
+        }
+
+        public bool Broadcast(int frequency, Dictionary<string, string> payload)
+        {
+            var data = ManipulatePayload(payload);
+            var metadata = GetMetadata();
+            return Connection.Broadcast(frequency, data, metadata);
+        }
+
+        public bool Broadcast(Dictionary<string, string> payload)
+        {
+            return Broadcast(0, payload);
+        }
+
+        public void Close()
+        {
+            Connection.Close();
+        }
+
+        private void OnReceiveNetMessage(int frequency, string sender, IReadOnlyDictionary<string, string> payload, Metadata metadata, bool broadcast)
+        {
+            if (CanReceive(frequency, sender, payload, metadata, broadcast))
+            {
+                MessageHandler(frequency, sender, payload, metadata, broadcast);
+            }
+        }
+
+        protected abstract bool CanReceive(int frequency, string sender, IReadOnlyDictionary<string, string> payload, Metadata metadata, bool broadcast);
+        protected abstract Dictionary<string, string> ManipulatePayload(Dictionary<string, string> payload);
+        protected abstract Metadata GetMetadata();
+    }
+}

Content.Server/DeviceNetwork/NetworkConnections/WiredNetworkConnection.cs

@@ -0,0 +1,84 @@
+using Content.Server.GameObjects.Components.NodeContainer;
+using Content.Server.GameObjects.Components.NodeContainer.NodeGroups;
+using Content.Server.GameObjects.Components.Power.ApcNetComponents;
+using Robust.Shared.Interfaces.GameObjects;
+using System.Collections.Generic;
+
+namespace Content.Server.GameObjects.EntitySystems.DeviceNetwork
+{
+    public class WiredNetworkConnection : BaseNetworkConnection
+    {
+        public const string WIRENET = "powernet";
+
+        private readonly IEntity _owner;
+
+        public WiredNetworkConnection(OnReceiveNetMessage onReceive, bool receiveAll, IEntity owner) : base(NetworkUtils.WIRED, 0, onReceive, receiveAll)
+        {
+            _owner = owner;
+        }
+
+        protected override bool CanReceive(int frequency, string sender, IReadOnlyDictionary<string, string> payload, Metadata metadata, bool broadcast)
+        {
+            if (_owner.Deleted)
+            {
+                Connection.Close();
+                return false;
+            }
+
+            if (_owner.TryGetComponent<PowerReceiverComponent>(out var powerReceiver)
+                && TryGetWireNet(powerReceiver, out var ownNet)
+                && metadata.TryParseMetadata<INodeGroup>(WIRENET, out var senderNet))
+            {
+                return ownNet.Equals(senderNet);
+            }
+
+            return false;
+        }
+
+        protected override Metadata GetMetadata()
+        {
+            if (_owner.Deleted)
+            {
+                Connection.Close();
+                return new Metadata();
+            }
+
+            if (_owner.TryGetComponent<PowerReceiverComponent>(out var powerReceiver)
+                && TryGetWireNet(powerReceiver, out var net))
+            {
+                var metadata = new Metadata
+                {
+                    {WIRENET, net }
+                };
+
+                return metadata;
+            }
+
+            return new Metadata();
+        }
+
+        protected override Dictionary<string, string> ManipulatePayload(Dictionary<string, string> payload)
+        {
+            return payload;
+        }
+
+        private bool TryGetWireNet(PowerReceiverComponent powerReceiver, out INodeGroup net)
+        {
+            if (powerReceiver.Provider is PowerProviderComponent && powerReceiver.Provider.ProviderOwner.TryGetComponent<NodeContainerComponent>(out var nodeContainer))
+            {
+                var nodes = nodeContainer.Nodes;
+                for (var index = 0; index < nodes.Count; index++)
+                {
+                    if (nodes[index].NodeGroupID == NodeGroupID.WireNet)
+                    {
+                        net = nodes[index].NodeGroup;
+                        return true;
+                    }
+                }
+
+            }
+            net = default;
+            return false;
+        }
+    }
+}

Content.Server/DeviceNetwork/NetworkConnections/WirelessNetworkConnection.cs

@@ -0,0 +1,63 @@
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Maths;
+using System;
+using System.Collections.Generic;
+
+namespace Content.Server.GameObjects.EntitySystems.DeviceNetwork
+{
+    public class WirelessNetworkConnection : BaseNetworkConnection
+    {
+        public const string WIRELESS_POSITION = "position";
+
+        private readonly IEntity _owner;
+
+        private float _range;
+        public float Range { get => _range; set => _range = Math.Abs(value); }
+
+        public WirelessNetworkConnection(int frequency, OnReceiveNetMessage onReceive, bool receiveAll, IEntity owner, float range) : base(NetworkUtils.WIRELESS, frequency, onReceive, receiveAll)
+        {
+            _owner = owner;
+            Range = range;
+        }
+
+        protected override bool CanReceive(int frequency, string sender, IReadOnlyDictionary<string, string> payload, Metadata metadata, bool broadcast)
+        {
+            if (_owner.Deleted)
+            {
+                Connection.Close();
+                return false;
+            }
+
+            if (metadata.TryParseMetadata<Vector2>(WIRELESS_POSITION, out var position))
+            {
+                var ownPosition = _owner.Transform.WorldPosition;
+                var distance = (ownPosition - position).Length;
+                return distance <= Range;
+            }
+            //Only receive packages with the same frequency
+            return frequency == Frequency;
+        }
+
+        protected override Metadata GetMetadata()
+        {
+            if (_owner.Deleted)
+            {
+                Connection.Close();
+                return new Metadata();
+            }
+
+            var position = _owner.Transform.WorldPosition;
+            var metadata = new Metadata
+            {
+                {WIRELESS_POSITION, position}
+            };
+
+            return metadata;
+        }
+
+        protected override Dictionary<string, string> ManipulatePayload(Dictionary<string, string> payload)
+        {
+            return payload;
+        }
+    }
+}

Content.Server/DeviceNetwork/NetworkUtils.cs

@@ -0,0 +1,38 @@
+using Content.Server.Interfaces;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Content.Server.GameObjects.EntitySystems.DeviceNetwork
+{
+    /// <summary>
+    /// A collection of utilities to help with using device networks
+    /// </summary>
+    public static class NetworkUtils
+    {
+        public const int PRIVATE = 0;
+        public const int WIRED = 1;
+        public const int WIRELESS = 2;
+
+        public const string COMMAND = "command";
+        public const string MESSAGE = "message";
+        public const string PING = "ping";
+
+        /// <summary>
+        /// Handles responding to pings.
+        /// </summary>
+        public static void PingResponse<T>(T connection, string sender, IReadOnlyDictionary<string, string> payload, string message = "") where T : IDeviceNetworkConnection
+        {
+            if (payload.TryGetValue(COMMAND, out var command) && command == PING)
+            {
+                var response = new Dictionary<string, string>
+                {
+                    {COMMAND, "ping_response"},
+                    {MESSAGE, message}
+                };
+
+                connection.Send(connection.Frequency, sender, response);
+            }
+        }
+    }
+}

Content.Server/GameObjects/Components/Arcade/BlockGameArcadeComponent.cs

@@ -13,6 +13,7 @@ using Robust.Server.GameObjects.Components.UserInterface;
 using Robust.Server.Interfaces.GameObjects;
 using Robust.Server.Interfaces.Player;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.ComponentDependencies;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.Random;
 using Robust.Shared.IoC;
@@ -29,10 +30,11 @@ namespace Content.Server.GameObjects.Components.Arcade
 
         public override string Name => "BlockGameArcade";
         public override uint? NetID => ContentNetIDs.BLOCKGAME_ARCADE;
-        private bool Powered => !Owner.TryGetComponent(out PowerReceiverComponent? receiver) || receiver.Powered;
+        [ComponentDependency] private PowerReceiverComponent? _powerReceiverComponent = default!;
+        private bool Powered => _powerReceiverComponent?.Powered ?? false;
         private BoundUserInterface? UserInterface => Owner.GetUIOrNull(BlockGameUiKey.Key);
 
-        private BlockGame _game = null!;
+        private BlockGame? _game;
 
         private IPlayerSession? _player;
         private List<IPlayerSession> _spectators = new List<IPlayerSession>();
@@ -47,7 +49,7 @@ namespace Content.Server.GameObjects.Components.Arcade
             {
                 return;
             }
-            if(!ActionBlockerSystem.CanInteract(Owner)) return;
+            if(!ActionBlockerSystem.CanInteract(actor.playerSession.AttachedEntity)) return;
 
             UserInterface?.Toggle(actor.playerSession);
             RegisterPlayerSession(actor.playerSession);
@@ -59,7 +61,7 @@ namespace Content.Server.GameObjects.Components.Arcade
             else _spectators.Add(session);
 
             UpdatePlayerStatus(session);
-            _game.UpdateNewPlayerUI(session);
+            _game?.UpdateNewPlayerUI(session);
         }
 
         private void DeactivePlayer(IPlayerSession session)
@@ -104,38 +106,56 @@ namespace Content.Server.GameObjects.Components.Arcade
             {
                 UserInterface.OnReceiveMessage += UserInterfaceOnOnReceiveMessage;
             }
+
+            if (_powerReceiverComponent != null)
+            {
+                _powerReceiverComponent.OnPowerStateChanged += OnPowerStateChanged;
+            }
             _game = new BlockGame(this);
         }
 
+        private void OnPowerStateChanged(object? sender, PowerStateEventArgs e)
+        {
+            if (e.Powered) return;
+
+            UserInterface?.CloseAll();
+            _player = null;
+            _spectators.Clear();
+        }
+
         private void UserInterfaceOnOnReceiveMessage(ServerBoundUserInterfaceMessage obj)
         {
-            if (obj.Message is BlockGameMessages.BlockGameUserUnregisterMessage unregisterMessage)
+            switch (obj.Message)
             {
+                case BlockGameMessages.BlockGameUserUnregisterMessage unregisterMessage:
                     UnRegisterPlayerSession(obj.Session);
-                return;
-            }
-            if (obj.Session != _player) return;
+                    break;
+                case BlockGameMessages.BlockGamePlayerActionMessage playerActionMessage:
+                    if (obj.Session != _player) break;
 
                     if (!ActionBlockerSystem.CanInteract(Owner))
                     {
                         DeactivePlayer(obj.Session);
+                        break;
                     }
 
-            if (!(obj.Message is BlockGameMessages.BlockGamePlayerActionMessage message)) return;
-            if (message.PlayerAction == BlockGamePlayerAction.NewGame)
+                    if (playerActionMessage.PlayerAction == BlockGamePlayerAction.NewGame)
                     {
-                if(_game.Started) _game = new BlockGame(this);
-                _game.StartGame();
+                        if(_game?.Started == true) _game = new BlockGame(this);
+                        _game?.StartGame();
                     }
                     else
                     {
-                _game.ProcessInput(message.PlayerAction);
+                        _game?.ProcessInput(playerActionMessage.PlayerAction);
+                    }
+
+                    break;
             }
         }
 
         public void DoGameTick(float frameTime)
         {
-            _game.GameTick(frameTime);
+            _game?.GameTick(frameTime);
         }
 
         private class BlockGame
@@ -196,13 +216,12 @@ namespace Content.Server.GameObjects.Components.Arcade
 
             private Vector2i _currentPiecePosition;
             private BlockGamePieceRotation _currentRotation;
-            private float _softDropOverride = 0.1f;
+            private float _softDropModifier = 0.1f;
 
-            private float Speed => !_softDropPressed
-                ? -0.03f * Level + 1
-                : _softDropOverride;
+            private float Speed =>
+                -0.03f * Level + 1 * (!_softDropPressed ? 1 : _softDropModifier);
 
-            private float _pressCheckSpeed = 0.08f;
+            private const float _pressCheckSpeed = 0.08f;
 
             private bool _running;
             public bool Paused => !(_running && _started);
@@ -278,7 +297,8 @@ namespace Content.Server.GameObjects.Components.Arcade
             public BlockGame(BlockGameArcadeComponent component)
             {
                 _component = component;
-                _internalNextPiece = BlockGamePiece.GetRandom(_component._random);
+                _allBlockGamePieces = (BlockGamePieceType[]) Enum.GetValues(typeof(BlockGamePieceType));
+                _internalNextPiece = GetRandomBlockGamePiece(_component._random);
             }
 
             private void SendHighscoreUpdate()
@@ -343,7 +363,7 @@ namespace Content.Server.GameObjects.Components.Arcade
                 {
                     _accumulatedLeftPressTime += frameTime;
 
-                    if (_accumulatedLeftPressTime >= _pressCheckSpeed)
+                    while (_accumulatedLeftPressTime >= _pressCheckSpeed)
                     {
 
                         if (_currentPiece.Positions(_currentPiecePosition.AddToX(-1), _currentRotation)
@@ -361,7 +381,7 @@ namespace Content.Server.GameObjects.Components.Arcade
                 {
                     _accumulatedRightPressTime += frameTime;
 
-                    if (_accumulatedRightPressTime >= _pressCheckSpeed)
+                    while (_accumulatedRightPressTime >= _pressCheckSpeed)
                     {
                         if (_currentPiece.Positions(_currentPiecePosition.AddToX(1), _currentRotation)
                             .All(MoveCheck))
@@ -384,14 +404,15 @@ namespace Content.Server.GameObjects.Components.Arcade
 
                 var checkTime = Speed;
 
-                if (_accumulatedFieldFrameTime < checkTime) return;
-
-                if(_softDropPressed) AddPoints(1);
+                while (_accumulatedFieldFrameTime >= checkTime)
+                {
+                    if (_softDropPressed) AddPoints(1);
 
                     InternalFieldTick();
 
                     _accumulatedFieldFrameTime -= checkTime;
                 }
+            }
 
             private void InternalFieldTick()
             {
@@ -490,7 +511,7 @@ namespace Content.Server.GameObjects.Components.Arcade
             private void InitializeNewBlock()
             {
                 InitializeNewBlock(_nextPiece);
-                _nextPiece = BlockGamePiece.GetRandom(_component._random);
+                _nextPiece = GetRandomBlockGamePiece(_component._random);
                 _holdBlock = false;
 
                 _component.UserInterface?.SendMessage(new BlockGameMessages.BlockGameVisualUpdateMessage(_nextPiece.BlocksForPreview(), BlockGameMessages.BlockGameVisualType.NextBlock));
@@ -538,6 +559,7 @@ namespace Content.Server.GameObjects.Components.Arcade
                         break;
                     case BlockGamePlayerAction.SoftdropStart:
                         _softDropPressed = true;
+                        if (_accumulatedFieldFrameTime > Speed) _accumulatedFieldFrameTime = Speed; //to prevent jumps
                         break;
                     case BlockGamePlayerAction.SoftdropEnd:
                         _softDropPressed = false;
@@ -707,6 +729,22 @@ namespace Content.Server.GameObjects.Components.Arcade
                 };
             }
 
+            private readonly BlockGamePieceType[] _allBlockGamePieces;
+
+            private List<BlockGamePieceType> _blockGamePiecesBuffer = new List<BlockGamePieceType>();
+
+            private BlockGamePiece GetRandomBlockGamePiece(IRobustRandom random)
+            {
+                if (_blockGamePiecesBuffer.Count == 0)
+                {
+                    _blockGamePiecesBuffer = _allBlockGamePieces.ToList();
+                }
+
+                var chosenPiece = random.Pick(_blockGamePiecesBuffer);
+                _blockGamePiecesBuffer.Remove(chosenPiece);
+                return BlockGamePiece.GetPiece(chosenPiece);
+            }
+
             private struct BlockGamePiece
             {
                 public Vector2i[] Offsets;
@@ -770,13 +808,6 @@ namespace Content.Server.GameObjects.Components.Arcade
                     return Blocks(new Vector2i(-xOffset, -yOffset), BlockGamePieceRotation.North);
                 }
 
-                public static BlockGamePiece GetRandom(IRobustRandom random)
-                {
-                    var pieces = (BlockGamePieceType[])Enum.GetValues(typeof(BlockGamePieceType));
-                    var choice = random.Pick(pieces);
-                    return GetPiece(choice);
-                }
-
                 public static BlockGamePiece GetPiece(BlockGamePieceType type)
                 {
                     //switch statement, hardcoded offsets

Content.Server/GameObjects/Components/Arcade/RandomArcadeGameComponent.cs

@@ -0,0 +1,34 @@
+using System;
+using Robust.Server.Interfaces.GameObjects;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Interfaces.Random;
+using Robust.Shared.IoC;
+using Robust.Shared.Random;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Server.GameObjects.Components.Arcade
+{
+    [RegisterComponent]
+    public class RandomArcadeGameComponent : Component, IMapInit
+    {
+        public override string Name => "RandomArcade";
+
+        public void MapInit()
+        {
+            var arcades = new[]
+            {
+                "BlockGameArcade",
+                "SpaceVillainArcade"
+            };
+
+            var entityManager = IoCManager.Resolve<IEntityManager>();
+
+            entityManager.SpawnEntity(
+                IoCManager.Resolve<IRobustRandom>().Pick(arcades),
+                Owner.Transform.Coordinates);
+
+            Owner.Delete();
+        }
+    }
+}

Content.Server/GameObjects/Components/Arcade/SpaceVillainArcadeComponent.cs

@@ -5,16 +5,20 @@ using Content.Server.GameObjects.Components.VendingMachines;
 using Content.Server.Utility;
 using Content.Shared.GameObjects.Components;
 using Content.Shared.GameObjects.Components.Arcade;
+using Content.Shared.GameObjects.EntitySystems;
 using Content.Shared.Interfaces.GameObjects.Components;
 using Robust.Server.GameObjects.Components.UserInterface;
 using Robust.Server.GameObjects.EntitySystems;
 using Robust.Server.Interfaces.GameObjects;
 using Robust.Shared.Audio;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.ComponentDependencies;
 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;
@@ -27,7 +31,10 @@ namespace Content.Server.GameObjects.Components.Arcade
     {
         [Dependency] private IRobustRandom _random = null!;
 
-        private bool Powered => !Owner.TryGetComponent(out PowerReceiverComponent? receiver) || receiver.Powered;
+        [ComponentDependency] private PowerReceiverComponent? _powerReceiverComponent = default!;
+        [ComponentDependency] private WiresComponent? _wiresComponent = default!;
+
+        private bool Powered => _powerReceiverComponent != null && _powerReceiverComponent.Powered;
 
         [ViewVariables] private BoundUserInterface? UserInterface => Owner.GetUIOrNull(SpaceVillainArcadeUiKey.Key);
         [ViewVariables] private bool _overflowFlag;
@@ -73,11 +80,11 @@ namespace Content.Server.GameObjects.Components.Arcade
             {
                 return;
             }
+            if(!ActionBlockerSystem.CanInteract(actor.playerSession.AttachedEntity)) return;
 
-            var wires = Owner.GetComponent<WiresComponent>();
-            if (wires.IsPanelOpen)
+            if (_wiresComponent?.IsPanelOpen == true)
             {
-                wires.OpenInterface(actor.playerSession);
+                _wiresComponent.OpenInterface(actor.playerSession);
             } else
             {
                 UserInterface?.Toggle(actor.playerSession);
@@ -92,6 +99,18 @@ namespace Content.Server.GameObjects.Components.Arcade
             {
                 UserInterface.OnReceiveMessage += UserInterfaceOnOnReceiveMessage;
             }
+
+            if (_powerReceiverComponent != null)
+            {
+                _powerReceiverComponent.OnPowerStateChanged += OnOnPowerStateChanged;
+            }
+        }
+
+        private void OnOnPowerStateChanged(object? sender, PowerStateEventArgs e)
+        {
+            if(e.Powered) return;
+
+            UserInterface?.CloseAll();
         }
 
 
@@ -145,6 +164,10 @@ namespace Content.Server.GameObjects.Components.Arcade
             builder.CreateWire(Wires.Overflow);
             builder.CreateWire(Wires.PlayerInvincible);
             builder.CreateWire(Wires.EnemyInvincible);
+            builder.CreateWire(4);
+            builder.CreateWire(5);
+            builder.CreateWire(6);
+            IndicatorUpdate();
         }
 
         public void WiresUpdate(WiresUpdateEventArgs args)
@@ -163,6 +186,24 @@ namespace Content.Server.GameObjects.Components.Arcade
                     _enemyInvincibilityFlag = value;
                     break;
             }
+
+            IndicatorUpdate();
+        }
+
+        public void IndicatorUpdate()
+        {
+            _wiresComponent?.SetStatus(Indicators.HealthManager,
+                new SharedWiresComponent.StatusLightData(Color.Purple,
+                    _playerInvincibilityFlag || _enemyInvincibilityFlag
+                        ? SharedWiresComponent.StatusLightState.BlinkingSlow
+                        : SharedWiresComponent.StatusLightState.On,
+                    "MNGR"));
+            _wiresComponent?.SetStatus(Indicators.HealthLimiter,
+                new SharedWiresComponent.StatusLightData(Color.Red,
+                    _overflowFlag
+                        ? SharedWiresComponent.StatusLightState.BlinkingSlow
+                        : SharedWiresComponent.StatusLightState.On,
+                    "LIMT"));
         }
 
         /// <summary>
@@ -257,7 +298,7 @@ namespace Content.Server.GameObjects.Components.Arcade
                 {
                     case PlayerAction.Attack:
                         var attackAmount = _random.Next(2, 6);
-                        _latestPlayerActionMessage = $"You attack {_enemyName} for {attackAmount}!";
+                        _latestPlayerActionMessage = Loc.GetString("You attack {0} for {1}!", _enemyName, attackAmount);
                         EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Effects/Arcade/player_attack.ogg", Owner.Owner, AudioParams.Default.WithVolume(-4f));
                         if(!Owner._enemyInvincibilityFlag) _enemyHp -= attackAmount;
                         _turtleTracker -= _turtleTracker > 0 ? 1 : 0;
@@ -265,24 +306,23 @@ namespace Content.Server.GameObjects.Components.Arcade
                     case PlayerAction.Heal:
                         var pointAmount = _random.Next(1, 3);
                         var healAmount = _random.Next(6, 8);
-                        _latestPlayerActionMessage = $"You use {pointAmount} magic to heal for {healAmount} damage!";
+                        _latestPlayerActionMessage = Loc.GetString("You use {0} magic to heal for {1} damage!", pointAmount, healAmount);
                         EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Effects/Arcade/player_heal.ogg", Owner.Owner, AudioParams.Default.WithVolume(-4f));
                         if(!Owner._playerInvincibilityFlag) _playerMp -= pointAmount;
                         _playerHp += healAmount;
                         _turtleTracker++;
                         break;
                     case PlayerAction.Recharge:
-                        var charge_amount = _random.Next(4, 7);
-                        _latestPlayerActionMessage = $"You regain {charge_amount} points";
+                        var chargeAmount = _random.Next(4, 7);
+                        _latestPlayerActionMessage = Loc.GetString("You regain {0} points", chargeAmount);
                         EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Effects/Arcade/player_charge.ogg", Owner.Owner, AudioParams.Default.WithVolume(-4f));
-                        _playerMp += charge_amount;
+                        _playerMp += chargeAmount;
                         _turtleTracker -= _turtleTracker > 0 ? 1 : 0;
                         break;
                 }
 
                 if (!CheckGameConditions())
                 {
-                    _running = false;
                     return;
                 }
 
@@ -291,7 +331,6 @@ namespace Content.Server.GameObjects.Components.Arcade
 
                 if (!CheckGameConditions())
                 {
-                    _running = false;
                     return;
                 }
                 ValidateVars();
@@ -304,22 +343,28 @@ namespace Content.Server.GameObjects.Components.Arcade
             /// <returns>A bool indicating if the game should continue.</returns>
             private bool CheckGameConditions()
             {
-                if ((_enemyHp <= 0 || _enemyMp <= 0) && (_playerHp > 0 && _playerMp > 0))
+                if ((_playerHp > 0 && _playerMp > 0) && (_enemyHp <= 0 || _enemyMp <= 0))
                 {
-                    UpdateUi("You won!", $"{_enemyName} dies.");
+                    _running = false;
+                    UpdateUi(Loc.GetString("You won!"), Loc.GetString("{0} dies.", _enemyName), true);
                     EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Effects/Arcade/win.ogg", Owner.Owner, AudioParams.Default.WithVolume(-4f));
                     Owner.ProcessWin();
                     return false;
                 }
-                if ((_playerHp <= 0 || _playerMp <= 0) && _enemyHp > 0 && _enemyMp > 0)
+
+                if (_playerHp > 0 && _playerMp > 0) return true;
+
+                if ((_enemyHp > 0 && _enemyMp > 0))
                 {
-                    UpdateUi("You lost!", $"{_enemyName} cheers.");
+                    _running = false;
+                    UpdateUi(Loc.GetString("You lost!"), Loc.GetString("{0} cheers.", _enemyName), true);
                     EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Effects/Arcade/gameover.ogg", Owner.Owner, AudioParams.Default.WithVolume(-4f));
                     return false;
                 }
-                if ((_playerHp <= 0 || _playerMp <= 0) && (_enemyHp <= 0 || _enemyMp <= 0))
+                if (_enemyHp <= 0 || _enemyMp <= 0)
                 {
-                    UpdateUi("You lost!", $"{_enemyName} dies, but takes you with him.");
+                    _running = false;
+                    UpdateUi(Loc.GetString("You lost!"), Loc.GetString("{0} dies, but takes you with him.", _enemyName), true);
                     EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Effects/Arcade/gameover.ogg", Owner.Owner, AudioParams.Default.WithVolume(-4f));
                     return false;
                 }
@@ -330,16 +375,16 @@ namespace Content.Server.GameObjects.Components.Arcade
             /// <summary>
             /// Updates the UI.
             /// </summary>
-            private void UpdateUi()
+            private void UpdateUi(bool metadata = false)
             {
-                Owner.UserInterface?.SendMessage(GenerateUpdateMessage(_latestPlayerActionMessage, _latestEnemyActionMessage));
+                Owner.UserInterface?.SendMessage(metadata ? GenerateMetaDataMessage() : GenerateUpdateMessage());
             }
 
-            private void UpdateUi(string message1, string message2)
+            private void UpdateUi(string message1, string message2, bool metadata = false)
             {
                 _latestPlayerActionMessage = message1;
                 _latestEnemyActionMessage = message2;
-                UpdateUi();
+                UpdateUi(metadata);
             }
 
             /// <summary>
@@ -351,14 +396,14 @@ namespace Content.Server.GameObjects.Components.Arcade
                 if (_turtleTracker >= 4)
                 {
                     var boomAmount = _random.Next(5, 10);
-                    _latestEnemyActionMessage = $"{_enemyName} throws a bomb, exploding you for {boomAmount} damage!";
+                    _latestEnemyActionMessage = Loc.GetString("{0} throws a bomb, exploding you for {1} damage!", _enemyName, boomAmount);
                     if (Owner._playerInvincibilityFlag) return;
                     _playerHp -= boomAmount;
                     _turtleTracker--;
                 }else if (_enemyMp <= 5 && _random.Prob(0.7f))
                 {
                     var stealAmount = _random.Next(2, 3);
-                    _latestEnemyActionMessage = $"{_enemyName} steals {stealAmount} of your power!";
+                    _latestEnemyActionMessage = Loc.GetString("{0} steals {1} of your power!", _enemyName, stealAmount);
                     if (Owner._playerInvincibilityFlag) return;
                     _playerMp -= stealAmount;
                     _enemyMp += stealAmount;
@@ -366,12 +411,13 @@ namespace Content.Server.GameObjects.Components.Arcade
                 {
                     _enemyHp += 4;
                     _enemyMp -= 4;
-                    _latestEnemyActionMessage = $"{_enemyName} heals for 4 health!";
+                    _latestEnemyActionMessage = Loc.GetString("{0} heals for 4 health!", _enemyName);
                 }
                 else
                 {
                     var attackAmount = _random.Next(3, 6);
-                    _latestEnemyActionMessage = $"{_enemyName} attacks you for {attackAmount} damage!";
+                    _latestEnemyActionMessage =
+                        Loc.GetString("{0} attacks you for {1} damage!", _enemyName, attackAmount);
                     if (Owner._playerInvincibilityFlag) return;
                     _playerHp -= attackAmount;
                 }
@@ -383,20 +429,18 @@ namespace Content.Server.GameObjects.Components.Arcade
             /// <returns>A Metadata-message.</returns>
             public SpaceVillainArcadeMetaDataUpdateMessage GenerateMetaDataMessage()
             {
-                return new SpaceVillainArcadeMetaDataUpdateMessage(_playerHp, _playerMp, _enemyHp, _enemyMp, _latestPlayerActionMessage, _latestEnemyActionMessage, Name, _enemyName);
+                return new SpaceVillainArcadeMetaDataUpdateMessage(_playerHp, _playerMp, _enemyHp, _enemyMp, _latestPlayerActionMessage, _latestEnemyActionMessage, Name, _enemyName, !_running);
             }
 
             /// <summary>
             /// Creates an Update-message based on the objects values.
             /// </summary>
-            /// <param name="playerAction">Content of the Playeraction-field.</param>
-            /// <param name="enemyAction">Content of the Enemyaction-field.</param>
-            /// <returns></returns>
+            /// <returns>An Update-Message.</returns>
             public SpaceVillainArcadeDataUpdateMessage
-                GenerateUpdateMessage(string playerAction = "", string enemyAction = "")
+                GenerateUpdateMessage()
             {
-                return new SpaceVillainArcadeDataUpdateMessage(_playerHp, _playerMp, _enemyHp, _enemyMp, playerAction,
-                    enemyAction);
+                return new SpaceVillainArcadeDataUpdateMessage(_playerHp, _playerMp, _enemyHp, _enemyMp, _latestPlayerActionMessage,
+                    _latestEnemyActionMessage);
             }
         }
     }

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

@@ -0,0 +1,70 @@
+#nullable enable
+using Content.Server.GameObjects.Components.Body.Respiratory;
+using Content.Shared.GameObjects.Components.Inventory;
+using Content.Shared.Interfaces.GameObjects.Components;
+using Npgsql.TypeHandlers;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Serialization;
+
+namespace Content.Server.GameObjects.Components.Atmos
+{
+    /// <summary>
+    /// Used in internals as breath tool.
+    /// </summary>
+    [RegisterComponent]
+    public class BreathToolComponent : Component, IEquipped, IUnequipped
+    {
+        /// <summary>
+        /// Tool is functional only in allowed slots
+        /// </summary>
+        private EquipmentSlotDefines.SlotFlags _allowedSlots;
+
+        public override string Name => "BreathMask";
+        public bool IsFunctional { get; private set; }
+        public IEntity? ConnectedInternalsEntity { get; private set; }
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+            serializer.DataField(ref _allowedSlots, "allowedSlots", EquipmentSlotDefines.SlotFlags.MASK);
+        }
+
+        protected override void Shutdown()
+        {
+            base.Shutdown();
+            DisconnectInternals();
+        }
+
+        public void Equipped(EquippedEventArgs eventArgs)
+        {
+            if ((EquipmentSlotDefines.SlotMasks[eventArgs.Slot] & _allowedSlots) != _allowedSlots) return;
+            IsFunctional = true;
+
+            if (eventArgs.User.TryGetComponent(out InternalsComponent? internals))
+            {
+                ConnectedInternalsEntity = eventArgs.User;
+                internals.ConnectBreathTool(Owner);
+            }
+        }
+
+        public void Unequipped(UnequippedEventArgs eventArgs)
+        {
+            DisconnectInternals();
+
+        }
+
+        public void DisconnectInternals()
+        {
+            var old = ConnectedInternalsEntity;
+            ConnectedInternalsEntity = null;
+
+            if (old != null && old.TryGetComponent<InternalsComponent>(out var internalsComponent))
+            {
+                internalsComponent.DisconnectBreathTool();
+            }
+
+            IsFunctional = false;
+        }
+    }
+}

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

@@ -16,6 +16,7 @@ using Content.Shared.Interfaces.GameObjects.Components;
 using Robust.Server.GameObjects;
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameObjects.Components;
+using Robust.Shared.GameObjects.Components.Timers;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.IoC;
@@ -205,7 +206,7 @@ namespace Content.Server.GameObjects.Components.Atmos
             Owner.PopupMessage(Loc.GetString("You stop, drop, and roll!"));
             stunnable.Paralyze(2f);
 
-            Timer.Spawn(2000, () =>
+            Owner.SpawnTimer(2000, () =>
             {
                 _resisting = false;
                 FireStacks -= 2f;

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

@@ -1,4 +1,5 @@
 using Content.Server.Atmos;
+using Content.Server.Interfaces;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
@@ -6,23 +7,19 @@ using Robust.Shared.ViewVariables;
 namespace Content.Server.GameObjects.Components.Atmos
 {
     [RegisterComponent]
-    public class GasMixtureHolderComponent : Component
+    public class GasMixtureHolderComponent : Component, IGasMixtureHolder
     {
         public override string Name => "GasMixtureHolder";
 
-        [ViewVariables] public GasMixture GasMixture { get; set; }
+        [ViewVariables] public GasMixture Air { get; set; }
 
         public override void ExposeData(ObjectSerializer serializer)
         {
             base.ExposeData(serializer);
 
-            GasMixture = new GasMixture();
+            Air = new GasMixture();
 
-            serializer.DataReadWriteFunction(
-                "volume",
-                0f,
-                vol => GasMixture.Volume = vol,
-                () => GasMixture.Volume);
+            serializer.DataField(this, x => x.Air, "air", new GasMixture());
         }
     }
 }

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

@@ -1,10 +1,356 @@
-using Robust.Shared.GameObjects;
+#nullable enable
+using System;
+using Content.Server.Atmos;
+using Content.Server.Explosions;
+using Content.Server.GameObjects.Components.Body.Respiratory;
+using Content.Server.GameObjects.Components.GUI;
+using Content.Server.Interfaces;
+using Content.Server.Utility;
+using Content.Shared.Atmos;
+using Content.Shared.Audio;
+using Content.Shared.GameObjects.Components.Atmos.GasTank;
+using Content.Shared.GameObjects.Components.Inventory;
+using Content.Shared.GameObjects.EntitySystems;
+using Content.Shared.GameObjects.Verbs;
+using Content.Shared.Interfaces.GameObjects.Components;
+using Content.Shared.Utility;
+using Robust.Server.GameObjects.Components.UserInterface;
+using Robust.Server.GameObjects.EntitySystems;
+using Robust.Server.Interfaces.GameObjects;
+using Robust.Server.Interfaces.Player;
+using Robust.Shared.Containers;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.EntitySystemMessages;
+using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Localization;
+using Robust.Shared.Map;
+using Robust.Shared.Serialization;
+using Robust.Shared.Utility;
+using Robust.Shared.ViewVariables;
 
 namespace Content.Server.GameObjects.Components.Atmos
 {
     [RegisterComponent]
-    public class GasTankComponent : Component
+    [ComponentReference(typeof(IActivate))]
+    public class GasTankComponent : SharedGasTankComponent, IExamine, IGasMixtureHolder, IUse, IDropped, IActivate
     {
-        public override string Name => "GasTank";
+    	  private const float MaxExplosionRange = 14f;
+        private const float DefaultOutputPressure = Atmospherics.OneAtmosphere;
+
+        private float _pressureResistance;
+
+        private int _integrity = 3;
+
+        [Dependency] private readonly IEntityManager _entityManager = default!;
+        [ViewVariables] private BoundUserInterface? _userInterface;
+
+        [ViewVariables] public GasMixture? Air { get; set; }
+
+        /// <summary>
+        ///     Distributed pressure.
+        /// </summary>
+        [ViewVariables] public float OutputPressure { get; private set; }
+
+        /// <summary>
+        ///     Tank is connected to internals.
+        /// </summary>
+        [ViewVariables] public bool IsConnected { get; set; }
+
+        /// <summary>
+        ///     Represents that tank is functional and can be connected to internals.
+        /// </summary>
+        public bool IsFunctional => GetInternalsComponent() != null;
+
+        /// <summary>
+        ///     Pressure at which tanks start leaking.
+        /// </summary>
+        public float TankLeakPressure { get; set; }     = 30 * Atmospherics.OneAtmosphere;
+
+        /// <summary>
+        ///     Pressure at which tank spills all contents into atmosphere.
+        /// </summary>
+        public float TankRupturePressure { get; set; }  = 40 * Atmospherics.OneAtmosphere;
+
+        /// <summary>
+        ///     Base 3x3 explosion.
+        /// </summary>
+        public float TankFragmentPressure { get; set; } = 50 * Atmospherics.OneAtmosphere;
+
+        /// <summary>
+        ///     Increases explosion for each scale kPa above threshold.
+        /// </summary>
+        public float TankFragmentScale { get; set; }    = 10 * Atmospherics.OneAtmosphere;
+
+        public override void Initialize()
+        {
+            base.Initialize();
+            _userInterface = Owner.GetUIOrNull(SharedGasTankUiKey.Key);
+            if (_userInterface != null)
+            {
+                _userInterface.OnReceiveMessage += UserInterfaceOnOnReceiveMessage;
+            }
+        }
+
+        public void OpenInterface(IPlayerSession session)
+        {
+            _userInterface?.Open(session);
+            UpdateUserInterface(true);
+        }
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            serializer.DataField(this, x => x.Air, "air", new GasMixture());
+            serializer.DataField(this, x => x.OutputPressure, "outputPressure", DefaultOutputPressure);
+            serializer.DataField(this, x => x.TankLeakPressure, "tankLeakPressure", 30 * Atmospherics.OneAtmosphere);
+            serializer.DataField(this, x => x.TankRupturePressure, "tankRupturePressure", 40 * Atmospherics.OneAtmosphere);
+            serializer.DataField(this, x => x.TankFragmentPressure, "tankFragmentPressure", 50 * Atmospherics.OneAtmosphere);
+            serializer.DataField(this, x => x.TankFragmentScale, "tankFragmentScale", 10 * Atmospherics.OneAtmosphere);
+            serializer.DataField(ref _pressureResistance, "pressureResistance", Atmospherics.OneAtmosphere * 5f);
+        }
+
+        public void Examine(FormattedMessage message, bool inDetailsRange)
+        {
+            message.AddMarkup(Loc.GetString("Pressure: [color=orange]{0}[/color] kPa.\n",
+                Math.Round(Air?.Pressure ?? 0)));
+            if (IsConnected)
+            {
+                message.AddMarkup(Loc.GetString("Connected to external component"));
+            }
+        }
+
+        protected override void Shutdown()
+        {
+            base.Shutdown();
+            DisconnectFromInternals();
+        }
+
+        public void Update()
+        {
+            Air?.React(this);
+            CheckStatus();
+            UpdateUserInterface();
+        }
+
+        public GasMixture? RemoveAir(float amount)
+        {
+            var gas = Air?.Remove(amount);
+            CheckStatus();
+            return gas;
+        }
+
+        public GasMixture RemoveAirVolume(float volume)
+        {
+            if (Air == null)
+                return new GasMixture(volume);
+
+            var tankPressure = Air.Pressure;
+            if (tankPressure < OutputPressure)
+            {
+                OutputPressure = tankPressure;
+                UpdateUserInterface();
+            }
+
+            var molesNeeded = OutputPressure * volume / (Atmospherics.R * Air.Temperature);
+
+            var air = RemoveAir(molesNeeded);
+
+            if (air != null)
+                air.Volume = volume;
+            else
+                return new GasMixture(volume);
+
+            return air;
+        }
+
+        public bool UseEntity(UseEntityEventArgs eventArgs)
+        {
+            if (!eventArgs.User.TryGetComponent(out IActorComponent? actor)) return false;
+            OpenInterface(actor.playerSession);
+            return true;
+        }
+
+        public void Activate(ActivateEventArgs eventArgs)
+        {
+            if (!eventArgs.User.TryGetComponent(out IActorComponent? actor)) return;
+            OpenInterface(actor.playerSession);
+        }
+
+        public void ConnectToInternals()
+        {
+            if (IsConnected || !IsFunctional) return;
+            var internals = GetInternalsComponent();
+            if (internals == null) return;
+            IsConnected = internals.TryConnectTank(Owner);
+            UpdateUserInterface();
+        }
+
+        public void DisconnectFromInternals(IEntity? owner = null)
+        {
+            if (!IsConnected) return;
+            IsConnected = false;
+            GetInternalsComponent(owner)?.DisconnectTank();
+            UpdateUserInterface();
+        }
+
+        private void UpdateUserInterface(bool initialUpdate = false)
+        {
+            _userInterface?.SetState(
+                new GasTankBoundUserInterfaceState
+                {
+                    TankPressure = Air?.Pressure ?? 0,
+                    OutputPressure = initialUpdate ? OutputPressure : (float?) null,
+                    InternalsConnected = IsConnected,
+                    CanConnectInternals = IsFunctional && GetInternalsComponent() != null
+                });
+        }
+
+        private void UserInterfaceOnOnReceiveMessage(ServerBoundUserInterfaceMessage message)
+        {
+            switch (message.Message)
+            {
+                case GasTankSetPressureMessage msg:
+                    OutputPressure = msg.Pressure;
+                    break;
+                case GasTankToggleInternalsMessage _:
+                    ToggleInternals();
+                    break;
+            }
+        }
+
+        private void ToggleInternals()
+        {
+            if (IsConnected)
+            {
+                DisconnectFromInternals();
+                return;
+            }
+
+            ConnectToInternals();
+        }
+
+        private InternalsComponent? GetInternalsComponent(IEntity? owner = null)
+        {
+            if (owner != null) return owner.GetComponentOrNull<InternalsComponent>();
+            return ContainerHelpers.TryGetContainer(Owner, out var container)
+                ? container.Owner.GetComponentOrNull<InternalsComponent>()
+                : null;
+        }
+
+        public void AssumeAir(GasMixture giver)
+        {
+            Air?.Merge(giver);
+            CheckStatus();
+        }
+
+        private void CheckStatus()
+        {
+            if (Air == null)
+                return;
+
+            var pressure = Air.Pressure;
+
+            if (pressure > TankFragmentPressure)
+            {
+                // Give the gas a chance to build up more pressure.
+                for (var i = 0; i < 3; i++)
+                {
+                    Air.React(this);
+                }
+
+                pressure = Air.Pressure;
+                var range = (pressure - TankFragmentPressure) / TankFragmentScale;
+
+                // Let's cap the explosion, yeah?
+                if (range > MaxExplosionRange)
+                {
+                    range = MaxExplosionRange;
+                }
+
+                Owner.SpawnExplosion((int) (range * 0.25f), (int) (range * 0.5f), (int) (range * 1.5f), 1);
+
+                Owner.Delete();
+                return;
+            }
+
+            if (pressure > TankRupturePressure)
+            {
+                if (_integrity <= 0)
+                {
+                    var tileAtmos = Owner.Transform.Coordinates.GetTileAtmosphere();
+                    tileAtmos?.AssumeAir(Air);
+
+                    EntitySystem.Get<AudioSystem>().PlayAtCoords("Audio/Effects/spray.ogg", Owner.Transform.Coordinates,
+                        AudioHelpers.WithVariation(0.125f));
+
+                    Owner.Delete();
+                    return;
+                }
+
+                _integrity--;
+                return;
+            }
+
+            if (pressure > TankLeakPressure)
+            {
+                if (_integrity <= 0)
+                {
+                    var tileAtmos = Owner.Transform.Coordinates.GetTileAtmosphere();
+                    if (tileAtmos == null)
+                        return;
+
+                    var leakedGas = Air.RemoveRatio(0.25f);
+                    tileAtmos.AssumeAir(leakedGas);
+                }
+                else
+                {
+                    _integrity--;
+                }
+
+                return;
+            }
+
+            if (_integrity < 3)
+                _integrity++;
+        }
+
+        /// <summary>
+        /// Open interaction window
+        /// </summary>
+        [Verb]
+        private sealed class ControlVerb : Verb<GasTankComponent>
+        {
+            public override bool RequireInteractionRange => true;
+
+            protected override void GetData(IEntity user, GasTankComponent component, VerbData data)
+            {
+                data.Visibility = VerbVisibility.Invisible;
+                if (!user.HasComponent<IActorComponent>())
+                {
+                    return;
+                }
+
+                data.Visibility = VerbVisibility.Visible;
+                data.Text = "Open Control Panel";
+            }
+
+            protected override void Activate(IEntity user, GasTankComponent component)
+            {
+                if (!user.TryGetComponent<IActorComponent>(out var actor))
+                {
+                    return;
+                }
+
+                component.OpenInterface(actor.playerSession);
+            }
+        }
+
+        public void Dropped(DroppedEventArgs eventArgs)
+        {
+            DisconnectFromInternals(eventArgs.User);
+        }
     }
 }

Content.Server/GameObjects/Components/Body/Behavior/LungBehaviorComponent.cs

@@ -2,7 +2,9 @@
 using System;
 using System.Linq;
 using Content.Server.Atmos;
+using Content.Server.GameObjects.Components.Atmos;
 using Content.Server.GameObjects.Components.Body.Circulatory;
+using Content.Server.GameObjects.Components.Body.Respiratory;
 using Content.Server.Utility;
 using Content.Shared.Atmos;
 using Content.Shared.GameObjects.Components.Body.Behavior;
@@ -10,6 +12,7 @@ using Robust.Shared.GameObjects;
 using Robust.Shared.Interfaces.Timing;
 using Robust.Shared.IoC;
 using Robust.Shared.Localization;
+using Robust.Shared.Log;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
 
@@ -147,6 +150,16 @@ namespace Content.Server.GameObjects.Components.Body.Behavior
 
         public override void Inhale(float frameTime)
         {
+            if (Body != null && Body.Owner.TryGetComponent(out InternalsComponent? internals)
+                             && internals.BreathToolEntity != null && internals.GasTankEntity != null
+                             && internals.BreathToolEntity.TryGetComponent(out BreathToolComponent? breathTool)
+                             && breathTool.IsFunctional && internals.GasTankEntity.TryGetComponent(out GasTankComponent? gasTank)
+                             && gasTank.Air != null)
+            {
+                Inhale(frameTime, gasTank.RemoveAirVolume(Atmospherics.BreathVolume));
+                return;
+            }
+
             if (!Owner.Transform.Coordinates.TryGetTileAir(out var tileAir))
             {
                 return;
@@ -157,8 +170,7 @@ namespace Content.Server.GameObjects.Components.Body.Behavior
 
         public void Inhale(float frameTime, GasMixture from)
         {
-            var ratio = Atmospherics.BreathPercentage * frameTime;
-
+            var ratio = (Atmospherics.BreathVolume / from.Volume) * frameTime;
 
             Transfer(from, Air, ratio);
             ToBloodstream(Air);

Content.Server/GameObjects/Components/Body/Respiratory/InternalsComponent.cs

@@ -0,0 +1,63 @@
+#nullable enable
+using Content.Server.GameObjects.Components.Atmos;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Server.GameObjects.Components.Body.Respiratory
+{
+    [RegisterComponent]
+    public class InternalsComponent : Component
+    {
+        public override string Name => "Internals";
+        [ViewVariables] public IEntity? GasTankEntity { get; set; }
+        [ViewVariables] public IEntity? BreathToolEntity { get; set; }
+
+        public void DisconnectBreathTool()
+        {
+            var old = BreathToolEntity;
+            BreathToolEntity = null;
+
+            if (old != null && old.TryGetComponent(out BreathToolComponent? breathTool) )
+            {
+                breathTool.DisconnectInternals();
+                DisconnectTank();
+            }
+        }
+
+        public void ConnectBreathTool(IEntity toolEntity)
+        {
+            if (BreathToolEntity != null && BreathToolEntity.TryGetComponent(out BreathToolComponent? tool))
+            {
+                tool.DisconnectInternals();
+            }
+
+            BreathToolEntity = toolEntity;
+        }
+
+        public void DisconnectTank()
+        {
+            if (GasTankEntity != null && GasTankEntity.TryGetComponent(out GasTankComponent? tank))
+            {
+                tank.DisconnectFromInternals(Owner);
+            }
+
+            GasTankEntity = null;
+        }
+
+        public bool TryConnectTank(IEntity tankEntity)
+        {
+            if (BreathToolEntity == null)
+                return false;
+
+            if (GasTankEntity != null && GasTankEntity.TryGetComponent(out GasTankComponent? tank))
+            {
+                tank.DisconnectFromInternals(Owner);
+            }
+
+            GasTankEntity = tankEntity;
+            return true;
+        }
+
+    }
+}

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

@@ -460,6 +460,7 @@ namespace Content.Server.GameObjects.Components.Buckle
             if (Moved)
             {
                 TryUnbuckle(Owner, true);
+                Moved = false;
                 return;
             }
 

Content.Server/GameObjects/Components/ConfigurationComponent.cs

@@ -0,0 +1,118 @@
+using Content.Server.GameObjects.Components.Interactable;
+using Content.Server.Utility;
+using Content.Shared.GameObjects.Components;
+using Content.Shared.GameObjects.Components.Interactable;
+using Content.Shared.Interfaces.GameObjects.Components;
+using Robust.Server.GameObjects.Components.UserInterface;
+using Robust.Server.Interfaces.GameObjects;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
+using Robust.Shared.ViewVariables;
+using System;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.Linq;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+
+namespace Content.Server.GameObjects.Components
+{
+    [RegisterComponent]
+    [ComponentReference(typeof(SharedConfigurationComponent))]
+    public class ConfigurationComponent : SharedConfigurationComponent, IInteractUsing
+    {
+        [ViewVariables] private BoundUserInterface UserInterface => Owner.GetUIOrNull(ConfigurationUiKey.Key);
+
+        [ViewVariables]
+        private readonly Dictionary<string, string> _config = new Dictionary<string, string>();
+
+        private Regex _validation;
+
+        public event Action<Dictionary<string, string>> OnConfigUpdate;
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            if (UserInterface != null)
+            {
+                UserInterface.OnReceiveMessage += UserInterfaceOnReceiveMessage;
+            }
+        }
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            serializer.DataReadWriteFunction("keys", new List<string>(),
+                (list) => FillConfiguration(list, _config, ""),
+                () => _config.Keys.ToList());
+
+            serializer.DataReadFunction("vailidation", "^[a-zA-Z0-9 ]*$", value => _validation = new Regex("^[a-zA-Z0-9 ]*$", RegexOptions.Compiled));
+        }
+
+        public string GetConfig(string name)
+        {
+            return _config.GetValueOrDefault(name);
+        }
+
+        protected override void Startup()
+        {
+            base.Startup();
+            UpdateUserInterface();
+        }
+
+        async Task<bool> IInteractUsing.InteractUsing(InteractUsingEventArgs eventArgs)
+        {
+            if (UserInterface == null || !eventArgs.User.TryGetComponent(out IActorComponent actor))
+                return false;
+
+            if (!eventArgs.Using.TryGetComponent<ToolComponent>(out var tool))
+                return false;
+
+            if (!await tool.UseTool(eventArgs.User, Owner, 0.2f, ToolQuality.Multitool))
+                return false;
+
+            UpdateUserInterface();
+            UserInterface.Open(actor.playerSession);
+            UserInterface.SendMessage(new ValidationUpdateMessage(_validation.ToString()), actor.playerSession);
+            return true;
+        }
+
+        private void UserInterfaceOnReceiveMessage(ServerBoundUserInterfaceMessage serverMsg)
+        {
+            var message = serverMsg.Message;
+            var config = new Dictionary<string, string>(_config);
+
+            if (message is ConfigurationUpdatedMessage msg)
+            {
+                foreach (var key in config.Keys)
+                {
+                    var value = msg.Config.GetValueOrDefault(key);
+
+                    if (_validation != null && !_validation.IsMatch(value) && value != "")
+                        continue;
+
+                    _config[key] = value;
+                }
+
+                OnConfigUpdate(_config);
+            }
+         }
+
+        private void UpdateUserInterface()
+        {
+            if (UserInterface == null)
+                return;
+
+            UserInterface.SetState(new ConfigurationBoundUserInterfaceState(_config));
+        }
+
+        private static void FillConfiguration<T>(List<string> list, Dictionary<string, T> configuration, T value){
+            for (var index = 0; index < list.Count; index++)
+            {
+                configuration.Add(list[index], value);
+            }
+        }
+    }
+}

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

@@ -155,7 +155,7 @@ namespace Content.Server.GameObjects.Components.Conveyor
                 if (entity.TryGetComponent(out IPhysicsComponent? physics))
                 {
                     var controller = physics.EnsureController<ConveyedController>();
-                    controller.Move(direction, _speed * frameTime);
+                    controller.Move(direction, _speed);
                 }
             }
         }

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

@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using Content.Shared.Audio;
 using Content.Shared.GameObjects.Components.Damage;
 using Content.Shared.GameObjects.EntitySystems;
 using Robust.Server.GameObjects.EntitySystems;
@@ -7,6 +8,7 @@ using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Interfaces.Random;
 using Robust.Shared.IoC;
+using Robust.Shared.Log;
 using Robust.Shared.Random;
 
 namespace Content.Server.GameObjects.Components.Damage
@@ -65,11 +67,6 @@ namespace Content.Server.GameObjects.Components.Damage
         protected override void DestructionBehavior()
         {
             _actSystem.HandleBreakage(Owner);
-            if (!Owner.Deleted && DestroySound != string.Empty)
-            {
-                var pos = Owner.Transform.Coordinates;
-                EntitySystem.Get<AudioSystem>().PlayAtCoords(DestroySound, pos);
-            }
         }
     }
 }

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

@@ -1,10 +1,13 @@
-using Content.Shared.GameObjects.Components.Damage;
+using System.Collections.Generic;
+using Content.Server.GameObjects.Components.Stack;
+using Content.Shared.GameObjects.Components.Damage;
 using Content.Shared.GameObjects.EntitySystems;
-using Robust.Server.GameObjects.EntitySystems;
+using Content.Shared.Utility;
 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.Prototypes;
 using Robust.Shared.Serialization;
 
 namespace Content.Server.GameObjects.Components.Damage
@@ -17,6 +20,8 @@ namespace Content.Server.GameObjects.Components.Damage
     public class DestructibleComponent : RuinableComponent, IDestroyAct
     {
         [Dependency] private readonly IEntitySystemManager _entitySystemManager = default!;
+        [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
+        [Dependency] private readonly IRobustRandom _random = default!;
 
         protected ActSystem ActSystem;
 
@@ -24,22 +29,51 @@ namespace Content.Server.GameObjects.Components.Damage
         public override string Name => "Destructible";
 
         /// <summary>
-        ///     Entity spawned upon destruction.
+        /// Entities spawned on destruction plus the min and max amount spawned.
         /// </summary>
-        public string SpawnOnDestroy { get; private set; }
+        public Dictionary<string, MinMax> SpawnOnDestroy { get; private set; }
 
         void IDestroyAct.OnDestroy(DestructionEventArgs eventArgs)
         {
-            if (!string.IsNullOrWhiteSpace(SpawnOnDestroy) && eventArgs.IsSpawnWreck)
+            if (SpawnOnDestroy == null || !eventArgs.IsSpawnWreck) return;
+            foreach (var (key, value) in SpawnOnDestroy)
             {
-                Owner.EntityManager.SpawnEntity(SpawnOnDestroy, Owner.Transform.Coordinates);
+                int count;
+                if (value.Min >= value.Max)
+                {
+                    count = value.Min;
+                }
+                else
+                {
+                    count = _random.Next(value.Min, value.Max + 1);
+                }
+
+                if (count == 0) continue;
+
+                if (EntityPrototypeHelpers.HasComponent<StackComponent>(key))
+                {
+                    var spawned = Owner.EntityManager.SpawnEntity(key, Owner.Transform.Coordinates);
+                    var stack = spawned.GetComponent<StackComponent>();
+                    stack.Count = count;
+                    spawned.RandomOffset(0.5f);
+                }
+                else
+                {
+                    for (var i = 0; i < count; i++)
+                    {
+                        var spawned = Owner.EntityManager.SpawnEntity(key, Owner.Transform.Coordinates);
+                        spawned.RandomOffset(0.5f);
+                    }
+                }
             }
         }
 
         public override void ExposeData(ObjectSerializer serializer)
         {
             base.ExposeData(serializer);
-            serializer.DataField(this, d => d.SpawnOnDestroy, "spawnOnDestroy", string.Empty);
+
+
+            serializer.DataField(this, d => d.SpawnOnDestroy, "spawnOnDestroy", null);
         }
 
         public override void Initialize()
@@ -56,11 +90,13 @@ namespace Content.Server.GameObjects.Components.Damage
                 var pos = Owner.Transform.Coordinates;
                 ActSystem.HandleDestruction(Owner,
                     true); //This will call IDestroyAct.OnDestroy on this component (and all other components on this entity)
-                if (DestroySound != string.Empty)
+            }
+        }
+
+        public struct MinMax
         {
-                    EntitySystem.Get<AudioSystem>().PlayAtCoords(DestroySound, pos);
-                }
-            }
+            public int Min;
+            public int Max;
         }
     }
 }

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

@@ -1,11 +1,15 @@
 using System.Collections.Generic;
+using Content.Shared.Audio;
 using Content.Shared.GameObjects.Components.Damage;
 using Robust.Server.GameObjects.EntitySystems;
 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.Serialization;
 using Robust.Shared.ViewVariables;
+using Logger = Robust.Shared.Log.Logger;
 
 namespace Content.Server.GameObjects.Components.Damage
 {
@@ -16,12 +20,19 @@ namespace Content.Server.GameObjects.Components.Damage
     [ComponentReference(typeof(IDamageableComponent))]
     public abstract class RuinableComponent : DamageableComponent
     {
+        [Dependency] private IRobustRandom _random = default!;
         /// <summary>
         ///     Sound played upon destruction.
         /// </summary>
         [ViewVariables]
         protected string DestroySound { get; private set; }
 
+        /// <summary>
+        /// Used instead of <see cref="DestroySound"/> if specified.
+        /// </summary>
+        [ViewVariables]
+        protected string DestroySoundCollection { get; private set; }
+
         public override List<DamageState> SupportedDamageStates =>
             new List<DamageState> {DamageState.Alive, DamageState.Dead};
 
@@ -44,6 +55,7 @@ namespace Content.Server.GameObjects.Components.Damage
                 () => Thresholds.TryGetValue(DamageState.Dead, out var value) ? value : (int?) null);
 
             serializer.DataField(this, ruinable => ruinable.DestroySound, "destroySound", string.Empty);
+            serializer.DataField(this, ruinable => ruinable.DestroySoundCollection, "destroySoundCollection", string.Empty);
         }
 
         protected override void EnterState(DamageState state)
@@ -65,10 +77,24 @@ namespace Content.Server.GameObjects.Components.Damage
         {
             CurrentState = DamageState.Dead;
 
-            if (!Owner.Deleted && DestroySound != string.Empty)
+            if (!Owner.Deleted)
             {
                 var pos = Owner.Transform.Coordinates;
-                EntitySystem.Get<AudioSystem>().PlayAtCoords(DestroySound, pos);
+                string sound = string.Empty;
+                if (DestroySoundCollection != string.Empty)
+                {
+                    sound = AudioHelpers.GetRandomFileFromSoundCollection(DestroySoundCollection);
+
+                }
+                else if (DestroySound != string.Empty)
+                {
+                    sound = DestroySound;
+                }
+                if (sound != string.Empty)
+                {
+                    Logger.Debug("Playing destruction sound");
+                    EntitySystem.Get<AudioSystem>().PlayAtCoords(sound, pos, AudioHelpers.WithVariation(0.125f));
+                }
             }
 
             DestructionBehavior();

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

@@ -33,7 +33,7 @@ namespace Content.Server.GameObjects.Components.Disposal
             return TryInsert(holderComponent);
         }
 
-        private bool TryInsert(DisposalHolderComponent holder)
+        public bool TryInsert(DisposalHolderComponent holder)
         {
             if (!Contents.Insert(holder.Owner))
             {

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

@@ -0,0 +1,840 @@
+#nullable enable
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.RegularExpressions;
+using System.Threading;
+using System.Threading.Tasks;
+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.DeviceNetwork;
+using Content.Server.GameObjects.EntitySystems.DoAfter;
+using Content.Server.Interfaces;
+using Content.Server.Interfaces.GameObjects.Components.Items;
+using Content.Server.Utility;
+using Content.Shared.GameObjects.Components.Body;
+using Content.Shared.GameObjects.Components.Disposal;
+using Content.Shared.GameObjects.EntitySystems;
+using Content.Shared.GameObjects.Verbs;
+using Content.Shared.Interfaces;
+using Content.Shared.Interfaces.GameObjects.Components;
+using Robust.Server.GameObjects;
+using Robust.Server.GameObjects.Components.Container;
+using Robust.Server.GameObjects.Components.UserInterface;
+using Robust.Server.GameObjects.EntitySystems;
+using Robust.Server.Interfaces.GameObjects;
+using Robust.Shared.Audio;
+using Robust.Shared.Containers;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components;
+using Robust.Shared.GameObjects.Components.Transform;
+using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Interfaces.Timing;
+using Robust.Shared.IoC;
+using Robust.Shared.Localization;
+using Robust.Shared.Log;
+using Robust.Shared.Serialization;
+using Robust.Shared.ViewVariables;
+using Timer = Robust.Shared.Timers.Timer;
+
+namespace Content.Server.GameObjects.Components.Disposal
+{
+    [RegisterComponent]
+    [ComponentReference(typeof(SharedDisposalMailingUnitComponent))]
+    [ComponentReference(typeof(IActivate))]
+    [ComponentReference(typeof(IInteractUsing))]
+    public class DisposalMailingUnitComponent : SharedDisposalMailingUnitComponent, IInteractHand, IActivate, IInteractUsing, IDragDropOn
+    {
+        [Dependency] private readonly IGameTiming _gameTiming = default!;
+
+        private const string HolderPrototypeId = "DisposalHolder";
+
+        /// <summary>
+        ///     The delay for an entity trying to move out of this unit.
+        /// </summary>
+        private static readonly TimeSpan ExitAttemptDelay = TimeSpan.FromSeconds(0.5);
+
+        /// <summary>
+        ///     Last time that an entity tried to exit this disposal unit.
+        /// </summary>
+        [ViewVariables]
+        private TimeSpan _lastExitAttempt;
+
+        public static readonly Regex TagRegex = new Regex("^[a-zA-Z0-9, ]*$", RegexOptions.Compiled);
+
+        /// <summary>
+        ///     The current pressure of this disposal unit.
+        ///     Prevents it from flushing if it is not equal to or bigger than 1.
+        /// </summary>
+        [ViewVariables]
+        private float _pressure;
+
+        private bool _engaged;
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        private TimeSpan _automaticEngageTime;
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        private TimeSpan _flushDelay;
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        private float _entryDelay;
+
+        /// <summary>
+        ///     Token used to cancel the automatic engage of a disposal unit
+        ///     after an entity enters it.
+        /// </summary>
+        private CancellationTokenSource? _automaticEngageToken;
+
+        /// <summary>
+        ///     Container of entities inside this disposal unit.
+        /// </summary>
+        [ViewVariables]
+        private Container _container = default!;
+
+        [ViewVariables]
+        private WiredNetworkConnection? _connection;
+
+        [ViewVariables] public IReadOnlyList<IEntity> ContainedEntities => _container.ContainedEntities;
+
+        [ViewVariables]
+        private readonly List<string> _targetList = new List<string>();
+
+        [ViewVariables]
+        private string _target = "";
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        private string _tag = "";
+
+        [ViewVariables]
+        public bool Powered =>
+            !Owner.TryGetComponent(out PowerReceiverComponent? receiver) ||
+            receiver.Powered;
+
+        [ViewVariables]
+        private PressureState State => _pressure >= 1 ? PressureState.Ready : PressureState.Pressurizing;
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        private bool Engaged
+        {
+            get => _engaged;
+            set
+            {
+                var oldEngaged = _engaged;
+                _engaged = value;
+
+                if (oldEngaged == value)
+                {
+                    return;
+                }
+
+                UpdateVisualState();
+            }
+        }
+
+        [ViewVariables] private BoundUserInterface? UserInterface => Owner.GetUIOrNull(DisposalMailingUnitUiKey.Key);
+
+        private DisposalMailingUnitBoundUserInterfaceState? _lastUiState;
+
+        /// <summary>
+        ///     Store the translated state.
+        /// </summary>
+        private (PressureState State, string Localized) _locState;
+
+        public bool CanInsert(IEntity entity)
+        {
+            if (!Anchored)
+            {
+                return false;
+            }
+
+            if (!entity.TryGetComponent(out IPhysicsComponent? physics) ||
+                !physics.CanCollide)
+            {
+                return false;
+            }
+
+            if (!entity.HasComponent<ItemComponent>() &&
+                !entity.HasComponent<IBody>())
+            {
+                return false;
+            }
+            return _container.CanInsert(entity);
+        }
+
+        private void TryQueueEngage()
+        {
+            if (!Powered && ContainedEntities.Count == 0)
+            {
+                return;
+            }
+
+            _automaticEngageToken = new CancellationTokenSource();
+
+            Timer.Spawn(_automaticEngageTime, () =>
+            {
+                if (!TryFlush())
+                {
+                    TryQueueEngage();
+                }
+            }, _automaticEngageToken.Token);
+        }
+
+        private void AfterInsert(IEntity entity)
+        {
+            TryQueueEngage();
+
+            if (entity.TryGetComponent(out IActorComponent? actor))
+            {
+                UserInterface?.Close(actor.playerSession);
+            }
+
+            UpdateVisualState();
+        }
+
+        public async Task<bool> TryInsert(IEntity entity, IEntity? user = default)
+        {
+            if (!CanInsert(entity))
+                return false;
+
+            if (user != null && _entryDelay > 0f)
+            {
+                var doAfterSystem = EntitySystem.Get<DoAfterSystem>();
+
+                var doAfterArgs = new DoAfterEventArgs(user, _entryDelay, default, Owner)
+                {
+                    BreakOnDamage = true,
+                    BreakOnStun = true,
+                    BreakOnTargetMove = true,
+                    BreakOnUserMove = true,
+                    NeedHand = false,
+                };
+
+                var result = await doAfterSystem.DoAfter(doAfterArgs);
+
+                if (result == DoAfterStatus.Cancelled)
+                    return false;
+
+            }
+
+            if (!_container.Insert(entity))
+                return false;
+
+            AfterInsert(entity);
+
+            return true;
+        }
+
+        private bool TryDrop(IEntity user, IEntity entity)
+        {
+            if (!user.TryGetComponent(out HandsComponent? hands))
+            {
+                return false;
+            }
+
+            if (!CanInsert(entity) || !hands.Drop(entity, _container))
+            {
+                return false;
+            }
+
+            AfterInsert(entity);
+
+            return true;
+        }
+
+        private void Remove(IEntity entity)
+        {
+            _container.Remove(entity);
+
+            if (ContainedEntities.Count == 0)
+            {
+                _automaticEngageToken?.Cancel();
+                _automaticEngageToken = null;
+            }
+
+            UpdateVisualState();
+        }
+
+        private bool CanFlush()
+        {
+            return _pressure >= 1 && Powered && Anchored;
+        }
+
+        private void ToggleEngage()
+        {
+            Engaged ^= true;
+
+            if (Engaged && CanFlush())
+            {
+                Timer.Spawn(_flushDelay, () => TryFlush());
+            }
+        }
+
+        public bool TryFlush()
+        {
+            if (!CanFlush())
+            {
+                return false;
+            }
+
+            var snapGrid = Owner.GetComponent<SnapGridComponent>();
+            var entry = snapGrid
+                .GetLocal()
+                .FirstOrDefault(entity => entity.HasComponent<DisposalEntryComponent>());
+
+            if (entry == null)
+            {
+                return false;
+            }
+
+            var entryComponent = entry.GetComponent<DisposalEntryComponent>();
+            var entities = _container.ContainedEntities.ToList();
+            foreach (var entity in _container.ContainedEntities.ToList())
+            {
+                _container.Remove(entity);
+            }
+
+            var holder = CreateTaggedHolder(entities, _target);
+
+            entryComponent.TryInsert(holder);
+
+            _automaticEngageToken?.Cancel();
+            _automaticEngageToken = null;
+
+            _pressure = 0;
+
+            Engaged = false;
+
+            UpdateVisualState(true);
+            UpdateInterface();
+
+            if (_connection != null)
+            {
+                var data = new Dictionary<string, string>
+                {
+                    { NetworkUtils.COMMAND, NET_CMD_SENT },
+                    { NET_SRC, _tag },
+                    { NET_TARGET, _target }
+                };
+
+                _connection.Broadcast(_connection.Frequency, data);
+            }
+
+            return true;
+        }
+
+        private DisposalHolderComponent CreateTaggedHolder(IReadOnlyCollection<IEntity> entities, string tag)
+        {
+            var holder = Owner.EntityManager.SpawnEntity(HolderPrototypeId, Owner.Transform.MapPosition);
+            var holderComponent = holder.GetComponent<DisposalHolderComponent>();
+
+            holderComponent.Tags.Add(tag);
+            holderComponent.Tags.Add(TAGS_MAIL);
+
+            foreach (var entity in entities)
+            {
+                holderComponent.TryInsert(entity);
+            }
+
+            return holderComponent;
+        }
+
+        private void UpdateTargetList()
+        {
+            _targetList.Clear();
+            var payload = new Dictionary<string, string>
+            {
+                { NetworkUtils.COMMAND, NET_CMD_REQUEST }
+            };
+
+            _connection?.Broadcast(_connection.Frequency, payload);
+        }
+
+        private void TryEjectContents()
+        {
+            foreach (var entity in _container.ContainedEntities.ToArray())
+            {
+                Remove(entity);
+            }
+        }
+
+        private void TogglePower()
+        {
+            if (!Owner.TryGetComponent(out PowerReceiverComponent? receiver))
+            {
+                return;
+            }
+
+            receiver.PowerDisabled = !receiver.PowerDisabled;
+            UpdateInterface();
+        }
+
+        private DisposalMailingUnitBoundUserInterfaceState GetInterfaceState()
+        {
+            string stateString;
+
+            if (_locState.State != State)
+            {
+                stateString = Loc.GetString($"{State}");
+                _locState = (State, stateString);
+            }
+            else
+            {
+                stateString = _locState.Localized;
+            }
+
+            return new DisposalMailingUnitBoundUserInterfaceState(Owner.Name, stateString, _pressure, Powered, Engaged, _tag, _targetList, _target);
+        }
+
+        private void UpdateInterface(bool checkEqual = true)
+        {
+            var state = GetInterfaceState();
+
+            if (checkEqual && _lastUiState != null && _lastUiState.Equals(state))
+            {
+                return;
+            }
+
+            _lastUiState = state;
+            UserInterface?.SetState((DisposalMailingUnitBoundUserInterfaceState) state.Clone());
+        }
+
+        private bool PlayerCanUse(IEntity? player)
+        {
+            if (player == null)
+            {
+                return false;
+            }
+
+            if (!ActionBlockerSystem.CanInteract(player) ||
+                !ActionBlockerSystem.CanUse(player))
+            {
+                return false;
+            }
+
+            return true;
+        }
+
+        private void OnUiReceiveMessage(ServerBoundUserInterfaceMessage obj)
+        {
+            if (obj.Session.AttachedEntity == null)
+            {
+                return;
+            }
+
+            if (!PlayerCanUse(obj.Session.AttachedEntity))
+            {
+                return;
+            }
+
+            if (obj.Message is UiButtonPressedMessage buttonMessage)
+            {
+                switch (buttonMessage.Button)
+                {
+                    case UiButton.Eject:
+                        TryEjectContents();
+                        break;
+                    case UiButton.Engage:
+                        ToggleEngage();
+                        break;
+                    case UiButton.Power:
+                        TogglePower();
+                        EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Machines/machine_switch.ogg", Owner, AudioParams.Default.WithVolume(-2f));
+
+                        break;
+                    default:
+                        throw new ArgumentOutOfRangeException();
+                }
+            }
+
+            if (obj.Message is UiTargetUpdateMessage tagMessage && TagRegex.IsMatch(tagMessage.Target))
+            {
+                _target = tagMessage.Target;
+            }
+        }
+
+        private void OnConfigUpdate(Dictionary<string, string> config)
+        {
+            if (config.TryGetValue("Tag", out var tag))
+                _tag = tag;
+        }
+
+        private void UpdateVisualState()
+        {
+            UpdateVisualState(false);
+        }
+
+        private void UpdateVisualState(bool flush)
+        {
+            if (!Owner.TryGetComponent(out AppearanceComponent? appearance))
+            {
+                return;
+            }
+
+
+            if (!Anchored)
+            {
+                appearance.SetData(Visuals.VisualState, VisualState.UnAnchored);
+                appearance.SetData(Visuals.Handle, HandleState.Normal);
+                appearance.SetData(Visuals.Light, LightState.Off);
+                return;
+            }
+            else if (_pressure < 1)
+            {
+                appearance.SetData(Visuals.VisualState, VisualState.Charging);
+            }
+            else
+            {
+                appearance.SetData(Visuals.VisualState, VisualState.Anchored);
+            }
+
+            appearance.SetData(Visuals.Handle, Engaged
+                ? HandleState.Engaged
+                : HandleState.Normal);
+
+            if (!Powered)
+            {
+                appearance.SetData(Visuals.Light, LightState.Off);
+                return;
+            }
+
+            if (flush)
+            {
+                appearance.SetData(Visuals.VisualState, VisualState.Flushing);
+                appearance.SetData(Visuals.Light, LightState.Off);
+                return;
+            }
+
+            if (ContainedEntities.Count > 0)
+            {
+                appearance.SetData(Visuals.Light, LightState.Full);
+                return;
+            }
+
+            appearance.SetData(Visuals.Light, _pressure < 1
+                ? LightState.Charging
+                : LightState.Ready);
+        }
+
+        public override void Update(float frameTime)
+        {
+            base.Update(frameTime);
+            if (!Powered)
+            {
+                return;
+            }
+
+            var oldPressure = _pressure;
+
+            _pressure = _pressure + frameTime > 1
+                ? 1
+                : _pressure + 0.05f * frameTime;
+
+            if (oldPressure < 1 && _pressure >= 1)
+            {
+                UpdateVisualState();
+
+                if (Engaged)
+                {
+                    TryFlush();
+                }
+            }
+
+            UpdateInterface();
+        }
+
+        private void PowerStateChanged(object? sender, PowerStateEventArgs args)
+        {
+            if (!args.Powered)
+            {
+                _automaticEngageToken?.Cancel();
+                _automaticEngageToken = null;
+            }
+
+            UpdateVisualState();
+
+            if (Engaged && !TryFlush())
+            {
+                TryQueueEngage();
+            }
+        }
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            serializer.DataReadWriteFunction(
+                "pressure",
+                1.0f,
+                pressure => _pressure = pressure,
+                () => _pressure);
+
+            serializer.DataReadWriteFunction(
+                "automaticEngageTime",
+                30,
+                seconds => _automaticEngageTime = TimeSpan.FromSeconds(seconds),
+                () => (int) _automaticEngageTime.TotalSeconds);
+
+            serializer.DataReadWriteFunction(
+                "flushDelay",
+                3,
+                seconds => _flushDelay = TimeSpan.FromSeconds(seconds),
+                () => (int) _flushDelay.TotalSeconds);
+
+            serializer.DataReadWriteFunction(
+                "entryDelay",
+                0.5f,
+                seconds => _entryDelay = seconds,
+                () => (int) _entryDelay);
+
+            serializer.DataField(ref _tag, "Tag", "");
+        }
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            _container = ContainerManagerComponent.Ensure<Container>(Name, Owner);
+
+            if (UserInterface != null)
+            {
+                UserInterface.OnReceiveMessage += OnUiReceiveMessage;
+            }
+
+            var network = IoCManager.Resolve<IDeviceNetwork>();
+            _connection = new WiredNetworkConnection(OnReceiveNetMessage, false, Owner);
+
+            if (Owner.TryGetComponent<ConfigurationComponent>(out var configuration))
+                configuration.OnConfigUpdate += OnConfigUpdate;
+
+            UpdateInterface();
+        }
+
+        protected override void Startup()
+        {
+            base.Startup();
+
+            if(!Owner.HasComponent<AnchorableComponent>())
+            {
+                Logger.WarningS("VitalComponentMissing", $"Disposal unit {Owner.Uid} is missing an anchorable component");
+            }
+
+            if (Owner.TryGetComponent(out IPhysicsComponent? physics))
+            {
+                physics.AnchoredChanged += UpdateVisualState;
+            }
+
+            if (Owner.TryGetComponent(out PowerReceiverComponent? receiver))
+            {
+                receiver.OnPowerStateChanged += PowerStateChanged;
+            }
+
+            UpdateTargetList();
+            UpdateVisualState();
+        }
+
+        public override void OnRemove()
+        {
+            if (Owner.TryGetComponent(out IPhysicsComponent? physics))
+            {
+                physics.AnchoredChanged -= UpdateVisualState;
+            }
+
+            if (Owner.TryGetComponent(out PowerReceiverComponent? receiver))
+            {
+                receiver.OnPowerStateChanged -= PowerStateChanged;
+            }
+
+            if (_container != null)
+            {
+                foreach (var entity in _container.ContainedEntities.ToArray())
+                {
+                    _container.ForceRemove(entity);
+                }
+            }
+
+            UserInterface?.CloseAll();
+
+            _automaticEngageToken?.Cancel();
+            _automaticEngageToken = null;
+
+            _container = null!;
+
+            _connection!.Close();
+
+            base.OnRemove();
+        }
+
+        public override void HandleMessage(ComponentMessage message, IComponent? component)
+        {
+            base.HandleMessage(message, component);
+
+            switch (message)
+            {
+                case RelayMovementEntityMessage msg:
+                    if (!msg.Entity.TryGetComponent(out HandsComponent? hands) ||
+                        hands.Count == 0 ||
+                        _gameTiming.CurTime < _lastExitAttempt + ExitAttemptDelay)
+                    {
+                        break;
+                    }
+
+                    _lastExitAttempt = _gameTiming.CurTime;
+                    Remove(msg.Entity);
+                    break;
+            }
+        }
+
+        private void OnReceiveNetMessage(int frequency, string sender, IReadOnlyDictionary<string, string> payload, object _, bool broadcast)
+        {
+            if (payload.TryGetValue(NetworkUtils.COMMAND, out var command) && Powered)
+            {
+                if (command == NET_CMD_RESPONSE && payload.TryGetValue(NET_TAG, out var tag))
+                {
+                    _targetList.Add(tag);
+                    UpdateInterface(false);
+                }
+
+                if (command == NET_CMD_REQUEST)
+                {
+                    if (_tag == "" || !Powered)
+                        return;
+
+                    var data = new Dictionary<string, string>
+                    {
+                        {NetworkUtils.COMMAND, NET_CMD_RESPONSE},
+                        {NET_TAG, _tag}
+                    };
+
+                    _connection?.Send(frequency, sender, data);
+                }
+            }
+        }
+
+        private bool IsValidInteraction(ITargetedInteractEventArgs eventArgs)
+        {
+            if (!ActionBlockerSystem.CanInteract(eventArgs.User))
+            {
+                Owner.PopupMessage(eventArgs.User, Loc.GetString("You can't do that!"));
+                return false;
+            }
+
+            if (ContainerHelpers.IsInContainer(eventArgs.User))
+            {
+                Owner.PopupMessage(eventArgs.User, Loc.GetString("You can't reach there!"));
+                return false;
+            }
+            // This popup message doesn't appear on clicks, even when code was seperate. Unsure why.
+
+            if (!eventArgs.User.HasComponent<IHandsComponent>())
+            {
+                Owner.PopupMessage(eventArgs.User, Loc.GetString("You have no hands!"));
+                return false;
+            }
+
+            return true;
+        }
+
+
+        bool IInteractHand.InteractHand(InteractHandEventArgs eventArgs)
+        {
+            if (!eventArgs.User.TryGetComponent(out IActorComponent? actor))
+            {
+                return false;
+            }
+
+            // Duplicated code here, not sure how else to get actor inside to make UserInterface happy. 
+
+            if (IsValidInteraction(eventArgs))
+            {
+                UpdateTargetList();
+                UpdateInterface(false);
+                UserInterface?.Open(actor.playerSession);
+                return true;
+            }
+
+            return false;
+        }
+
+        void IActivate.Activate(ActivateEventArgs eventArgs)
+        {
+            if (!eventArgs.User.TryGetComponent(out IActorComponent? actor))
+            {
+                return;
+            }
+
+            if (IsValidInteraction(eventArgs))
+            {
+                UserInterface?.Open(actor.playerSession);
+            }
+
+            return;
+        }
+
+
+        async Task<bool> IInteractUsing.InteractUsing(InteractUsingEventArgs eventArgs)
+        {
+            return TryDrop(eventArgs.User, eventArgs.Using);
+        }
+
+        bool IDragDropOn.CanDragDropOn(DragDropEventArgs eventArgs)
+        {
+            return CanInsert(eventArgs.Dragged);
+        }
+
+        bool IDragDropOn.DragDropOn(DragDropEventArgs eventArgs)
+        {
+            _ = TryInsert(eventArgs.Dragged, eventArgs.User);
+            return true;
+        }
+
+        [Verb]
+        private sealed class SelfInsertVerb : Verb<DisposalMailingUnitComponent>
+        {
+            protected override void GetData(IEntity user, DisposalMailingUnitComponent component, VerbData data)
+            {
+                data.Visibility = VerbVisibility.Invisible;
+
+                if (!ActionBlockerSystem.CanInteract(user) ||
+                    component.ContainedEntities.Contains(user))
+                {
+                    return;
+                }
+
+                data.Visibility = VerbVisibility.Visible;
+                data.Text = Loc.GetString("Jump inside");
+            }
+
+            protected override void Activate(IEntity user, DisposalMailingUnitComponent component)
+            {
+                _ = component.TryInsert(user, user);
+            }
+        }
+
+        [Verb]
+        private sealed class FlushVerb : Verb<DisposalMailingUnitComponent>
+        {
+            protected override void GetData(IEntity user, DisposalMailingUnitComponent component, VerbData data)
+            {
+                data.Visibility = VerbVisibility.Invisible;
+
+                if (!ActionBlockerSystem.CanInteract(user) ||
+                    component.ContainedEntities.Contains(user))
+                {
+                    return;
+                }
+
+                data.Visibility = VerbVisibility.Visible;
+                data.Text = Loc.GetString("Flush");
+            }
+
+            protected override void Activate(IEntity user, DisposalMailingUnitComponent component)
+            {
+                component.Engaged = true;
+                component.TryFlush();
+            }
+        }
+    }
+}

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

@@ -6,12 +6,14 @@ using System.Threading;
 using System.Threading.Tasks;
 using Content.Server.GameObjects.Components.GUI;
 using Content.Server.GameObjects.Components.Items.Storage;
+using Content.Server.GameObjects.Components.Mobs.State;
 using Content.Server.GameObjects.Components.Power.ApcNetComponents;
 using Content.Server.GameObjects.Components.Projectiles;
 using Content.Server.GameObjects.EntitySystems.DoAfter;
 using Content.Server.Interfaces.GameObjects.Components.Items;
 using Content.Server.Utility;
 using Content.Shared.GameObjects.Components.Body;
+using Content.Shared.GameObjects.Components.Damage;
 using Content.Shared.GameObjects.Components.Disposal;
 using Content.Shared.GameObjects.Components.Items;
 using Content.Shared.GameObjects.EntitySystems;
@@ -27,6 +29,7 @@ using Robust.Shared.Audio;
 using Robust.Shared.Containers;
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameObjects.Components;
+using Robust.Shared.GameObjects.Components.Timers;
 using Robust.Shared.GameObjects.Components.Transform;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
@@ -136,11 +139,14 @@ namespace Content.Server.GameObjects.Components.Disposal
                 return false;
             }
 
+
             if (!entity.TryGetComponent(out IPhysicsComponent? physics) ||
                 !physics.CanCollide)
             {
+                if (!(entity.TryGetComponent(out IDamageableComponent? damageState) && damageState.CurrentState == DamageState.Dead)) {
                     return false;
                 }
+            }
 
             if (!entity.HasComponent<ItemComponent>() &&
                 !entity.HasComponent<IBody>())
@@ -160,7 +166,7 @@ namespace Content.Server.GameObjects.Components.Disposal
 
             _automaticEngageToken = new CancellationTokenSource();
 
-            Timer.Spawn(_automaticEngageTime, () =>
+            Owner.SpawnTimer(_automaticEngageTime, () =>
             {
                 if (!TryFlush())
                 {
@@ -255,7 +261,7 @@ namespace Content.Server.GameObjects.Components.Disposal
 
             if (Engaged && CanFlush())
             {
-                Timer.Spawn(_flushDelay, () => TryFlush());
+                Owner.SpawnTimer(_flushDelay, () => TryFlush());
             }
         }
 

Content.Server/GameObjects/Components/Doors/AirlockComponent.cs

@@ -13,6 +13,7 @@ using Robust.Server.GameObjects;
 using Robust.Server.GameObjects.EntitySystems;
 using Robust.Server.Interfaces.GameObjects;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components.Timers;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Localization;
 using Robust.Shared.Maths;
@@ -310,7 +311,7 @@ namespace Content.Server.GameObjects.Components.Doors
                         PowerWiresPulsed = true;
                         _powerWiresPulsedTimerCancel.Cancel();
                         _powerWiresPulsedTimerCancel = new CancellationTokenSource();
-                        Timer.Spawn(PowerWiresTimeout,
+                        Owner.SpawnTimer(PowerWiresTimeout,
                             () => PowerWiresPulsed = false,
                             _powerWiresPulsedTimerCancel.Token);
                         break;

Content.Server/GameObjects/Components/Doors/ServerDoorComponent.cs

@@ -23,6 +23,7 @@ using Robust.Server.GameObjects.EntitySystems;
 using Robust.Shared.Audio;
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameObjects.Components;
+using Robust.Shared.GameObjects.Components.Timers;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Maths;
@@ -249,7 +250,7 @@ namespace Content.Server.GameObjects.Components.Doors
                 occluder.Enabled = false;
             }
 
-            Timer.Spawn(OpenTimeOne, async () =>
+            Owner.SpawnTimer(OpenTimeOne, async () =>
             {
                 if (Owner.TryGetComponent(out AirtightComponent? airtight))
                 {
@@ -319,7 +320,7 @@ namespace Content.Server.GameObjects.Components.Doors
                 stun.Paralyze(DoorStunTime);
 
                 // If we hit someone, open up after stun (opens right when stun ends)
-                Timer.Spawn(TimeSpan.FromSeconds(DoorStunTime) - OpenTimeOne - OpenTimeTwo, Open);
+                Owner.SpawnTimer(TimeSpan.FromSeconds(DoorStunTime) - OpenTimeOne - OpenTimeTwo, Open);
                 break;
             }
         }
@@ -402,7 +403,7 @@ namespace Content.Server.GameObjects.Components.Doors
                 occluder.Enabled = true;
             }
 
-            Timer.Spawn(CloseTimeOne, async () =>
+            Owner.SpawnTimer(CloseTimeOne, async () =>
             {
                 if (shouldCheckCrush && _canCrush)
                 {
@@ -435,7 +436,7 @@ namespace Content.Server.GameObjects.Components.Doors
                 return;
 
             SetAppearance(DoorVisualState.Deny);
-            Timer.Spawn(DenyTime, () =>
+            Owner.SpawnTimer(DenyTime, () =>
             {
                 SetAppearance(DoorVisualState.Closed);
             }, _cancellationTokenSource.Token);

Content.Server/GameObjects/Components/Fluids/PuddleComponent.cs

@@ -14,6 +14,7 @@ using Robust.Server.GameObjects.EntitySystems;
 using Robust.Server.Interfaces.GameObjects;
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameObjects.Components;
+using Robust.Shared.GameObjects.Components.Timers;
 using Robust.Shared.GameObjects.Components.Transform;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
@@ -254,7 +255,7 @@ namespace Content.Server.GameObjects.Components.Fluids
             _evaporationToken = new CancellationTokenSource();
 
             // KYS to evaporate
-            Timer.Spawn(TimeSpan.FromSeconds(_evaporateTime), Evaporate, _evaporationToken.Token);
+            Owner.SpawnTimer(TimeSpan.FromSeconds(_evaporateTime), Evaporate, _evaporationToken.Token);
         }
 
         private void UpdateSlip()

Content.Server/GameObjects/Components/GUI/HandsComponent.cs

@@ -4,12 +4,10 @@ using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using Content.Server.GameObjects.Components.Items.Storage;
-using Content.Server.GameObjects.Components.Mobs;
 using Content.Server.GameObjects.EntitySystems.Click;
 using Content.Server.Interfaces.GameObjects.Components.Items;
 using Content.Shared.GameObjects.Components.Body.Part;
 using Content.Shared.GameObjects.Components.Items;
-using Content.Shared.GameObjects.Components.Mobs;
 using Content.Shared.GameObjects.EntitySystems;
 using Content.Shared.Physics.Pull;
 using Robust.Server.GameObjects;
@@ -18,7 +16,6 @@ using Robust.Server.GameObjects.EntitySystemMessages;
 using Robust.Shared.Containers;
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameObjects.Components;
-using Robust.Shared.GameObjects.Components.Transform;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Interfaces.Network;
 using Robust.Shared.IoC;
@@ -26,7 +23,6 @@ using Robust.Shared.Log;
 using Robust.Shared.Maths;
 using Robust.Shared.Players;
 using Robust.Shared.ViewVariables;
-using Content.Server.GameObjects.Components.Pulling;
 using Robust.Shared.Map;
 
 namespace Content.Server.GameObjects.Components.GUI
@@ -119,7 +115,8 @@ namespace Content.Server.GameObjects.Components.GUI
             : GetItem(ActiveHand);
 
         /// <summary>
-        ///     Enumerates over the hand keys, returning the active hand first.
+        ///     Enumerates over the enabled hand keys,
+        ///     returning the active hand first.
         /// </summary>
         public IEnumerable<string> ActivePriorityEnumerable()
         {
@@ -135,6 +132,11 @@ namespace Content.Server.GameObjects.Components.GUI
                     continue;
                 }
 
+                if (!hand.Enabled)
+                {
+                    continue;
+                }
+
                 yield return hand.Name;
             }
         }
@@ -205,7 +207,11 @@ namespace Content.Server.GameObjects.Components.GUI
             if (mobCheck && !ActionBlockerSystem.CanPickup(Owner))
                 return false;
 
-            return GetHand(index)?.Container.CanInsert(item.Owner) == true;
+            var hand = GetHand(index);
+
+            return hand != null &&
+                   hand.Enabled &&
+                   hand.Container.CanInsert(item.Owner) == true;
         }
 
         /// <summary>
@@ -245,7 +251,7 @@ namespace Content.Server.GameObjects.Components.GUI
             return false;
         }
 
-        public bool Drop(string slot, EntityCoordinates coords, bool doMobChecks = true)
+        public bool Drop(string slot, EntityCoordinates coords, bool doMobChecks = true, bool doDropInteraction = true)
         {
             var hand = GetHand(slot);
             if (!CanDrop(slot, doMobChecks) || hand?.Entity == null)
@@ -260,7 +266,7 @@ namespace Content.Server.GameObjects.Components.GUI
                 return false;
             }
 
-            if (!DroppedInteraction(item, false))
+            if (doDropInteraction && !DroppedInteraction(item, false))
                 return false;
 
             item.RemovedFromSlot();
@@ -282,7 +288,7 @@ namespace Content.Server.GameObjects.Components.GUI
             return true;
         }
 
-        public bool Drop(IEntity entity, EntityCoordinates coords, bool doMobChecks = true)
+        public bool Drop(IEntity entity, EntityCoordinates coords, bool doMobChecks = true, bool doDropInteraction = true)
         {
             if (entity == null)
             {
@@ -294,15 +300,15 @@ namespace Content.Server.GameObjects.Components.GUI
                 throw new ArgumentException("Entity must be held in one of our hands.", nameof(entity));
             }
 
-            return Drop(slot, coords, doMobChecks);
+            return Drop(slot, coords, doMobChecks, doDropInteraction);
         }
 
-        public bool Drop(string slot, bool mobChecks = true)
+        public bool Drop(string slot, bool mobChecks = true, bool doDropInteraction = true)
         {
-            return Drop(slot, Owner.Transform.Coordinates, mobChecks);
+            return Drop(slot, Owner.Transform.Coordinates, mobChecks, doDropInteraction);
         }
 
-        public bool Drop(IEntity entity, bool mobChecks = true)
+        public bool Drop(IEntity entity, bool mobChecks = true, bool doDropInteraction = true)
         {
             if (entity == null)
             {
@@ -314,10 +320,10 @@ namespace Content.Server.GameObjects.Components.GUI
                 throw new ArgumentException("Entity must be held in one of our hands.", nameof(entity));
             }
 
-            return Drop(slot, Owner.Transform.Coordinates, mobChecks);
+            return Drop(slot, Owner.Transform.Coordinates, mobChecks, doDropInteraction);
         }
 
-        public bool Drop(string slot, BaseContainer targetContainer, bool doMobChecks = true)
+        public bool Drop(string slot, BaseContainer targetContainer, bool doMobChecks = true, bool doDropInteraction = true)
         {
             if (slot == null)
             {
@@ -352,7 +358,7 @@ namespace Content.Server.GameObjects.Components.GUI
                 throw new InvalidOperationException();
             }
 
-            if (!DroppedInteraction(item, doMobChecks))
+            if (doDropInteraction && !DroppedInteraction(item, doMobChecks))
                 return false;
 
             item.RemovedFromSlot();
@@ -368,7 +374,7 @@ namespace Content.Server.GameObjects.Components.GUI
             return true;
         }
 
-        public bool Drop(IEntity entity, BaseContainer targetContainer, bool doMobChecks = true)
+        public bool Drop(IEntity entity, BaseContainer targetContainer, bool doMobChecks = true, bool doDropInteraction = true)
         {
             if (entity == null)
             {
@@ -380,7 +386,7 @@ namespace Content.Server.GameObjects.Components.GUI
                 throw new ArgumentException("Entity must be held in one of our hands.", nameof(entity));
             }
 
-            return Drop(slot, targetContainer, doMobChecks);
+            return Drop(slot, targetContainer, doMobChecks, doDropInteraction);
         }
 
         /// <summary>
@@ -411,7 +417,7 @@ namespace Content.Server.GameObjects.Components.GUI
             }
 
             var container = ContainerManagerComponent.Create<ContainerSlot>($"hand {_nextHand++}", Owner);
-            var hand = new Hand(name, container);
+            var hand = new Hand(this, name, container);
 
             _hands.Add(hand);
 
@@ -515,6 +521,53 @@ namespace Content.Server.GameObjects.Components.GUI
             return false;
         }
 
+        public override void HandleMessage(ComponentMessage message, IComponent? component)
+        {
+            base.HandleMessage(message, component);
+
+            if (message is PullMessage pullMessage &&
+                pullMessage.Puller.Owner != Owner)
+            {
+                return;
+            }
+
+            switch (message)
+            {
+                case PullAttemptMessage msg:
+                    if (!_hands.Any(hand => hand.Enabled))
+                    {
+                        msg.Cancelled = true;
+                    }
+
+                    break;
+                case PullStartedMessage _:
+                    var firstFreeHand = _hands.FirstOrDefault(hand => hand.Enabled);
+
+                    if (firstFreeHand == null)
+                    {
+                        break;
+                    }
+
+                    firstFreeHand.Enabled = false;
+
+                    break;
+                case PullStoppedMessage _:
+                    var firstOccupiedHand = _hands.FirstOrDefault(hand => !hand.Enabled);
+
+                    if (firstOccupiedHand == null)
+                    {
+                        break;
+                    }
+
+                    firstOccupiedHand.Enabled = true;
+
+                    break;
+                case HandDisabledMsg msg:
+                    Drop(msg.Name, false);
+                    break;
+            }
+        }
+
         public override void HandleNetworkMessage(ComponentMessage message, INetChannel channel, ICommonSession? session = null)
         {
             base.HandleNetworkMessage(message, channel, session);
@@ -625,34 +678,6 @@ namespace Content.Server.GameObjects.Components.GUI
             }
         }
 
-        private void AddPullingStatuses(IEntity pulled)
-        {
-            if (pulled.TryGetComponent(out ServerStatusEffectsComponent? pulledStatus))
-            {
-                pulledStatus.ChangeStatusEffectIcon(StatusEffect.Pulled,
-                    "/Textures/Interface/StatusEffects/Pull/pulled.png");
-            }
-
-            if (Owner.TryGetComponent(out ServerStatusEffectsComponent? ownerStatus))
-            {
-                ownerStatus.ChangeStatusEffectIcon(StatusEffect.Pulling,
-                    "/Textures/Interface/StatusEffects/Pull/pulling.png");
-            }
-        }
-
-        private void RemovePullingStatuses(IEntity pulled)
-        {
-            if (pulled.TryGetComponent(out ServerStatusEffectsComponent? pulledStatus))
-            {
-                pulledStatus.RemoveStatusEffect(StatusEffect.Pulled);
-            }
-
-            if (Owner.TryGetComponent(out ServerStatusEffectsComponent? ownerStatus))
-            {
-                ownerStatus.RemoveStatusEffect(StatusEffect.Pulling);
-            }
-        }
-
         void IBodyPartAdded.BodyPartAdded(BodyPartAddedEventArgs args)
         {
             if (args.Part.PartType != BodyPartType.Hand)
@@ -676,16 +701,42 @@ namespace Content.Server.GameObjects.Components.GUI
 
     public class Hand : IDisposable
     {
-        public Hand(string name, ContainerSlot container)
+        private bool _enabled = true;
+
+        public Hand(HandsComponent parent, string name, ContainerSlot container)
         {
+            Parent = parent;
             Name = name;
             Container = container;
         }
 
+        private HandsComponent Parent { get; }
         public string Name { get; }
         public IEntity? Entity => Container.ContainedEntity;
         public ContainerSlot Container { get; }
 
+        public bool Enabled
+        {
+            get => _enabled;
+            set
+            {
+                if (_enabled == value)
+                {
+                    return;
+                }
+
+                _enabled = value;
+                Parent.Dirty();
+
+                var message = value
+                    ? (ComponentMessage) new HandEnabledMsg(Name)
+                    : new HandDisabledMsg(Name);
+
+                Parent.HandleMessage(message, Parent);
+                Parent.Owner.SendMessage(Parent, message);
+            }
+        }
+
         public void Dispose()
         {
             Container.Shutdown(); // TODO verify this
@@ -693,7 +744,7 @@ namespace Content.Server.GameObjects.Components.GUI
 
         public SharedHand ToShared(int index, HandLocation location)
         {
-            return new SharedHand(index, Name, Entity?.Uid, location);
+            return new SharedHand(index, Name, Entity?.Uid, location, Enabled);
         }
     }
 

Content.Server/GameObjects/Components/GUI/HumanInventoryControllerComponent.cs

@@ -1,6 +1,7 @@
 using Content.Server.GameObjects.Components.Items.Storage;
 using Robust.Server.GameObjects.Components.Container;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components.Timers;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Localization;
 using Robust.Shared.Timers;
@@ -67,7 +68,7 @@ namespace Content.Server.GameObjects.Components.GUI
             switch (message)
             {
                 case ContainerContentsModifiedMessage contentsModified:
-                    Timer.Spawn(0, DropIdAndPocketsIfWeNoLongerHaveAUniform);
+                    Owner.SpawnTimer(0, DropIdAndPocketsIfWeNoLongerHaveAUniform);
                     break;
             }
         }

Content.Server/GameObjects/Components/GUI/InventoryComponent.cs

@@ -156,6 +156,13 @@ namespace Content.Server.GameObjects.Components.GUI
         {
             return GetSlotItem<ItemComponent>(slot);
         }
+
+        public IEnumerable<T> LookupItems<T>() where T: Component
+        {
+            return _slotContainers.Values.SelectMany(x => x.ContainedEntities.Select(e => e.GetComponentOrNull<T>()))
+                .Where(x => x != null);
+        }
+
         public T GetSlotItem<T>(Slots slot) where T : ItemComponent
         {
             if (!_slotContainers.ContainsKey(slot))
@@ -435,7 +442,7 @@ namespace Content.Server.GameObjects.Components.GUI
                     var activeHand = hands.GetActiveHand;
                     if (activeHand != null && activeHand.Owner.TryGetComponent(out ItemComponent clothing))
                     {
-                        hands.Drop(hands.ActiveHand);
+                        hands.Drop(hands.ActiveHand, doDropInteraction:false);
                         if (!Equip(msg.Inventoryslot, clothing, true, out var reason))
                         {
                             hands.PutInHand(clothing);
@@ -534,7 +541,7 @@ namespace Content.Server.GameObjects.Components.GUI
             var list = new List<KeyValuePair<Slots, EntityUid>>();
             foreach (var (slot, container) in _slotContainers)
             {
-                if (container.ContainedEntity != null)
+                if (container != null && container.ContainedEntity != null)
                 {
                     list.Add(new KeyValuePair<Slots, EntityUid>(slot, container.ContainedEntity.Uid));
                 }

Content.Server/GameObjects/Components/Instruments/InstrumentComponent.cs

@@ -70,6 +70,47 @@ namespace Content.Server.GameObjects.Components.Instruments
         [ViewVariables]
         private int _midiEventCount = 0;
 
+        private byte _instrumentProgram;
+        private byte _instrumentBank;
+        private bool _allowPercussion;
+        private bool _allowProgramChange;
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        public override byte InstrumentProgram { get => _instrumentProgram;
+            set
+            {
+                _instrumentProgram = value;
+                Dirty();
+            }
+        }
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        public override byte InstrumentBank { get => _instrumentBank;
+            set
+            {
+                _instrumentBank = value;
+                Dirty();
+            }
+        }
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        public override bool AllowPercussion { get => _allowPercussion;
+            set
+            {
+                _allowPercussion = value;
+                Dirty();
+            }
+        }
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        public override bool AllowProgramChange { get => _allowProgramChange;
+            set
+            {
+                _allowProgramChange = value;
+                Dirty();
+            }
+        }
+
         /// <summary>
         ///     Whether the instrument is an item which can be held or not.
         /// </summary>
@@ -130,11 +171,15 @@ namespace Content.Server.GameObjects.Components.Instruments
         {
             base.ExposeData(serializer);
             serializer.DataField(ref _handheld, "handheld", false);
+            serializer.DataField(ref _instrumentProgram, "program", (byte) 1);
+            serializer.DataField(ref _instrumentBank, "bank", (byte) 0);
+            serializer.DataField(ref _allowPercussion, "allowPercussion", false);
+            serializer.DataField(ref _allowProgramChange, "allowProgramChange", false);
         }
 
         public override ComponentState GetComponentState()
         {
-            return new InstrumentState(Playing, _lastSequencerTick);
+            return new InstrumentState(Playing, InstrumentProgram, InstrumentBank, AllowPercussion, AllowProgramChange, _lastSequencerTick);
         }
 
         public override void HandleNetworkMessage(ComponentMessage message, INetChannel channel, ICommonSession? session = null)

Content.Server/GameObjects/Components/Interactable/HandheldLightComponent.cs

@@ -1,52 +1,33 @@
 #nullable enable
 using System.Threading.Tasks;
-using Content.Server.GameObjects.Components.GUI;
 using Content.Server.GameObjects.Components.Items.Clothing;
 using Content.Server.GameObjects.Components.Items.Storage;
 using Content.Server.GameObjects.Components.Power;
-using Content.Server.Interfaces.GameObjects.Components.Items;
 using Content.Shared.GameObjects.Components;
 using Content.Shared.GameObjects.EntitySystems;
-using Content.Shared.GameObjects.Verbs;
 using Content.Shared.Interfaces;
 using Content.Shared.Interfaces.GameObjects.Components;
 using Robust.Server.GameObjects;
-using Robust.Server.GameObjects.Components.Container;
 using Robust.Server.GameObjects.EntitySystems;
-using Robust.Server.Interfaces.GameObjects;
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Localization;
+using Robust.Shared.Serialization;
 using Robust.Shared.Utility;
 using Robust.Shared.ViewVariables;
 
 namespace Content.Server.GameObjects.Components.Interactable
 {
     /// <summary>
-    ///     Component that represents a handheld lightsource which can be toggled on and off.
+    ///     Component that represents a powered handheld light source which can be toggled on and off.
     /// </summary>
     [RegisterComponent]
-    internal sealed class HandheldLightComponent : SharedHandheldLightComponent, IUse, IExamine, IInteractUsing,
-        IMapInit
+    internal sealed class HandheldLightComponent : SharedHandheldLightComponent, IUse, IExamine, IInteractUsing
     {
-        [ViewVariables(VVAccess.ReadWrite)] public float Wattage { get; set; } = 10;
-        [ViewVariables] private ContainerSlot _cellContainer = default!;
-
-        [ViewVariables]
-        private BatteryComponent? Cell
-        {
-            get
-            {
-                if (_cellContainer.ContainedEntity == null) return null;
-                if (_cellContainer.ContainedEntity.TryGetComponent(out BatteryComponent? cell))
-                {
-                    return cell;
-                }
-
-                return null;
-            }
-        }
+        [ViewVariables(VVAccess.ReadWrite)] public float Wattage { get; set; } = 10f;
+        [ViewVariables] private PowerCellSlotComponent _cellSlot = default!;
+        private PowerCellComponent? Cell => _cellSlot.Cell;
 
         /// <summary>
         ///     Status of light, whether or not it is emitting light.
@@ -54,26 +35,36 @@ namespace Content.Server.GameObjects.Components.Interactable
         [ViewVariables]
         public bool Activated { get; private set; }
 
-        [ViewVariables] protected override bool HasCell => Cell != null;
+        [ViewVariables] protected override bool HasCell => _cellSlot.HasCell;
+
+        [ViewVariables(VVAccess.ReadWrite)] public string? TurnOnSound;
+        [ViewVariables(VVAccess.ReadWrite)] public string? TurnOnFailSound;
+        [ViewVariables(VVAccess.ReadWrite)] public string? TurnOffSound;
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+            serializer.DataField(this, x => x.Wattage, "wattage", 10f);
+            serializer.DataField(ref TurnOnSound, "turnOnSound", "/Audio/Items/flashlight_toggle.ogg");
+            serializer.DataField(ref TurnOnFailSound, "turnOnFailSound", "/Audio/Machines/button.ogg");
+            serializer.DataField(ref TurnOffSound, "turnOffSound", "/Audio/Items/flashlight_toggle.ogg");
+        }
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            Owner.EnsureComponent<PointLightComponent>();
+            _cellSlot = Owner.EnsureComponent<PowerCellSlotComponent>();
+
+            Dirty();
+        }
 
         async Task<bool> IInteractUsing.InteractUsing(InteractUsingEventArgs eventArgs)
         {
-            if (!eventArgs.Using.HasComponent<BatteryComponent>()) return false;
-
-            if (Cell != null) return false;
-
-            var handsComponent = eventArgs.User.GetComponent<IHandsComponent>();
-
-            if (!handsComponent.Drop(eventArgs.Using, _cellContainer))
-            {
-                return false;
-            }
-
-            EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Items/pistol_magin.ogg", Owner);
-
-
+            if (!ActionBlockerSystem.CanInteract(eventArgs.User)) return false;
+            if (!_cellSlot.InsertCell(eventArgs.Using)) return false;
             Dirty();
-
             return true;
         }
 
@@ -83,6 +74,10 @@ namespace Content.Server.GameObjects.Components.Interactable
             {
                 message.AddMarkup(Loc.GetString("The light is currently [color=darkgreen]on[/color]."));
             }
+            else
+            {
+                message.AddMarkup(Loc.GetString("The light is currently [color=darkred]off[/color]."));
+            }
         }
 
         bool IUse.UseEntity(UseEntityEventArgs eventArgs)
@@ -90,45 +85,20 @@ namespace Content.Server.GameObjects.Components.Interactable
             return ToggleStatus(eventArgs.User);
         }
 
-        public override void Initialize()
-        {
-            base.Initialize();
-
-            Owner.EnsureComponent<PointLightComponent>();
-            _cellContainer =
-                ContainerManagerComponent.Ensure<ContainerSlot>("flashlight_cell_container", Owner, out _);
-
-            Dirty();
-        }
-
         /// <summary>
         ///     Illuminates the light if it is not active, extinguishes it if it is active.
         /// </summary>
         /// <returns>True if the light's status was toggled, false otherwise.</returns>
         private bool ToggleStatus(IEntity user)
         {
-            var item = Owner.GetComponent<ItemComponent>();
-            // Update sprite and light states to match the activation.
-            if (Activated)
-            {
-                TurnOff();
-                item.EquippedPrefix = "off";
-            }
-            else
-            {
-                TurnOn(user);
-                item.EquippedPrefix = "on";
+            return Activated ? TurnOff() : TurnOn(user);
         }
 
-            // Toggle always succeeds.
-            return true;
-        }
-
-        private void TurnOff(bool makeNoise = true)
+        private bool TurnOff(bool makeNoise = true)
         {
             if (!Activated)
             {
-                return;
+                return false;
             }
 
             SetState(false);
@@ -136,40 +106,41 @@ namespace Content.Server.GameObjects.Components.Interactable
 
             if (makeNoise)
             {
-                EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Items/flashlight_toggle.ogg", Owner);
-            }
+                if (TurnOffSound != null) EntitySystem.Get<AudioSystem>().PlayFromEntity(TurnOffSound, Owner);
             }
 
-        private void TurnOn(IEntity user)
+            return true;
+        }
+
+        private bool TurnOn(IEntity user)
         {
             if (Activated)
             {
-                return;
+                return false;
             }
 
-            var cell = Cell;
-            if (cell == null)
+            if (Cell == null)
             {
-                EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Machines/button.ogg", Owner);
-
+                if (TurnOnFailSound != null) EntitySystem.Get<AudioSystem>().PlayFromEntity(TurnOnFailSound, Owner);
                 Owner.PopupMessage(user, Loc.GetString("Cell missing..."));
-                return;
+                return false;
             }
 
             // To prevent having to worry about frame time in here.
             // Let's just say you need a whole second of charge before you can turn it on.
             // Simple enough.
-            if (Wattage > cell.CurrentCharge)
+            if (Wattage > Cell.CurrentCharge)
             {
-                EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Machines/button.ogg", Owner);
+                if (TurnOnFailSound != null) EntitySystem.Get<AudioSystem>().PlayFromEntity(TurnOnFailSound, Owner);
                 Owner.PopupMessage(user, Loc.GetString("Dead cell..."));
-                return;
+                return false;
             }
 
             Activated = true;
             SetState(true);
 
-            EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Items/flashlight_toggle.ogg", Owner);
+            if (TurnOnSound != null) EntitySystem.Get<AudioSystem>().PlayFromEntity(TurnOnSound, Owner);
+            return true;
         }
 
         private void SetState(bool on)
@@ -188,11 +159,20 @@ namespace Content.Server.GameObjects.Components.Interactable
             {
                 clothing.ClothingEquippedPrefix = on ? "On" : "Off";
             }
+
+            if (Owner.TryGetComponent(out ItemComponent? item))
+            {
+                item.EquippedPrefix = on ? "on" : "off";
+            }
         }
 
         public void OnUpdate(float frameTime)
         {
-            if (!Activated || Cell == null) return;
+            if (Cell == null)
+            {
+                TurnOff(false);
+                return;
+            }
 
             var appearanceComponent = Owner.GetComponent<AppearanceComponent>();
 
@@ -209,43 +189,10 @@ namespace Content.Server.GameObjects.Components.Interactable
                 appearanceComponent.SetData(HandheldLightVisuals.Power, HandheldLightPowerStates.Dying);
             }
 
-            if (Cell == null || !Cell.TryUseCharge(Wattage * frameTime)) TurnOff();
-
+            if (Activated && !Cell.TryUseCharge(Wattage * frameTime)) TurnOff(false);
             Dirty();
         }
 
-        private void EjectCell(IEntity user)
-        {
-            if (Cell == null)
-            {
-                return;
-            }
-
-            var cell = Cell;
-
-            if (!_cellContainer.Remove(cell.Owner))
-            {
-                return;
-            }
-
-            Dirty();
-
-            if (!user.TryGetComponent(out HandsComponent? hands))
-            {
-                return;
-            }
-
-            if (!hands.PutInHand(cell.Owner.GetComponent<ItemComponent>()))
-            {
-                cell.Owner.Transform.Coordinates = user.Transform.Coordinates;
-            }
-
-            // Assuming the battery has just been taken out of the flashlight, make sure it's getting disabled
-            TurnOff(false);
-
-            EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Items/pistol_magout.ogg", Owner);
-        }
-
         public override ComponentState GetComponentState()
         {
             if (Cell == null)
@@ -262,44 +209,5 @@ namespace Content.Server.GameObjects.Components.Interactable
 
             return new HandheldLightComponentState(Cell.CurrentCharge / Cell.MaxCharge, HasCell);
         }
-
-        [Verb]
-        public sealed class EjectCellVerb : Verb<HandheldLightComponent>
-        {
-            protected override void GetData(IEntity user, HandheldLightComponent component, VerbData data)
-            {
-                if (!ActionBlockerSystem.CanInteract(user))
-                {
-                    data.Visibility = VerbVisibility.Invisible;
-                    return;
-                }
-
-                if (component.Cell == null)
-                {
-                    data.Text = Loc.GetString("Eject cell (cell missing)");
-                    data.Visibility = VerbVisibility.Disabled;
-                }
-                else
-                {
-                    data.Text = Loc.GetString("Eject cell");
-                }
-            }
-
-            protected override void Activate(IEntity user, HandheldLightComponent component)
-            {
-                component.EjectCell(user);
-            }
-        }
-
-        void IMapInit.MapInit()
-        {
-            if (_cellContainer.ContainedEntity != null)
-            {
-                return;
-            }
-
-            var cell = Owner.EntityManager.SpawnEntity("PowerCellSmallStandard", Owner.Transform.Coordinates);
-            _cellContainer.Insert(cell);
-        }
     }
 }

Content.Server/GameObjects/Components/Items/Storage/CursedEntityStorageComponent.cs

@@ -22,7 +22,7 @@ namespace Content.Server.GameObjects.Components.Items.Storage
 
         public override string Name => "CursedEntityStorage";
 
-        public override void CloseStorage()
+        protected override void CloseStorage()
         {
             base.CloseStorage();
 
@@ -41,7 +41,7 @@ namespace Content.Server.GameObjects.Components.Items.Storage
             var locker = lockerEnt.GetComponent<EntityStorageComponent>();
 
             if(locker.Open)
-                locker.CloseStorage();
+                locker.TryCloseStorage(Owner);
 
             foreach (var entity in Contents.ContainedEntities.ToArray())
             {

Content.Server/GameObjects/Components/Items/Storage/EntityStorageComponent.cs

@@ -47,11 +47,15 @@ namespace Content.Server.GameObjects.Components.Items.Storage
         [ViewVariables]
         private bool _isCollidableWhenOpen;
         [ViewVariables]
-        private IEntityQuery _entityQuery;
+        protected IEntityQuery EntityQuery;
+
         private bool _showContents;
         private bool _occludesLight;
         private bool _open;
+        private bool _canWeldShut;
         private bool _isWeldedShut;
+        private string _closeSound = "/Audio/Machines/closetclose.ogg";
+        private string _openSound = "/Audio/Machines/closetopen.ogg";
 
         [ViewVariables]
         protected Container Contents;
@@ -104,14 +108,24 @@ namespace Content.Server.GameObjects.Components.Items.Storage
         }
 
         [ViewVariables(VVAccess.ReadWrite)]
-        public bool CanWeldShut { get; set; }
+        public bool CanWeldShut {
+            get => _canWeldShut;
+            set
+            {
+                _canWeldShut = value;
+                if (Owner.TryGetComponent(out AppearanceComponent appearance))
+                {
+                    appearance.SetData(StorageVisuals.CanWeld, value);
+                }
+            }
+        }
 
         /// <inheritdoc />
         public override void Initialize()
         {
             base.Initialize();
             Contents = ContainerManagerComponent.Ensure<Container>(nameof(EntityStorageComponent), Owner);
-            _entityQuery = new IntersectingEntityQuery(Owner);
+            EntityQuery = new IntersectingEntityQuery(Owner);
 
             Contents.ShowContents = _showContents;
             Contents.OccludesLight = _occludesLight;
@@ -134,6 +148,8 @@ namespace Content.Server.GameObjects.Components.Items.Storage
             serializer.DataField(ref _open, "open", false);
             serializer.DataField(this, a => a.IsWeldedShut, "IsWeldedShut", false);
             serializer.DataField(this, a => a.CanWeldShut, "CanWeldShut", true);
+            serializer.DataField(this, x => _closeSound, "closeSound", "/Audio/Machines/closetclose.ogg");
+            serializer.DataField(this, x => _openSound, "openSound", "/Audio/Machines/closetopen.ogg");
         }
 
         public virtual void Activate(ActivateEventArgs eventArgs)
@@ -141,17 +157,26 @@ namespace Content.Server.GameObjects.Components.Items.Storage
             ToggleOpen(eventArgs.User);
         }
 
-        private void ToggleOpen(IEntity user)
+        public virtual bool CanOpen(IEntity user, bool silent = false)
         {
             if (IsWeldedShut)
             {
-                Owner.PopupMessage(user, Loc.GetString("It's welded completely shut!"));
-                return;
+                if(!silent) Owner.PopupMessage(user, Loc.GetString("It's welded completely shut!"));
+                return false;
+            }
+            return true;
         }
 
+        public virtual bool CanClose(IEntity user, bool silent = false)
+        {
+            return true;
+        }
+
+        private void ToggleOpen(IEntity user)
+        {
             if (Open)
             {
-                CloseStorage();
+                TryCloseStorage(user);
             }
             else
             {
@@ -159,10 +184,10 @@ namespace Content.Server.GameObjects.Components.Items.Storage
             }
         }
 
-        public virtual void CloseStorage()
+        protected virtual void CloseStorage()
         {
             Open = false;
-            var entities = Owner.EntityManager.GetEntities(_entityQuery);
+            var entities = Owner.EntityManager.GetEntities(EntityQuery);
             var count = 0;
             foreach (var entity in entities)
             {
@@ -187,16 +212,16 @@ namespace Content.Server.GameObjects.Components.Items.Storage
             }
 
             ModifyComponents();
-            EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Machines/closetclose.ogg", Owner);
+            EntitySystem.Get<AudioSystem>().PlayFromEntity(_closeSound, Owner);
             _lastInternalOpenAttempt = default;
         }
 
-        private void OpenStorage()
+        protected virtual void OpenStorage()
         {
             Open = true;
             EmptyContents();
             ModifyComponents();
-            EntitySystem.Get<AudioSystem>().PlayFromEntity("/Audio/Machines/closetopen.ogg", Owner);
+            EntitySystem.Get<AudioSystem>().PlayFromEntity(_openSound, Owner);
         }
 
         private void ModifyComponents()
@@ -224,8 +249,9 @@ namespace Content.Server.GameObjects.Components.Items.Storage
             }
         }
 
-        private bool AddToContents(IEntity entity)
+        protected virtual bool AddToContents(IEntity entity)
         {
+            if (entity == Owner) return false;
             if (entity.TryGetComponent(out IPhysicsComponent entityPhysicsComponent))
             {
                 if(MaxSize < entityPhysicsComponent.WorldAABB.Size.X
@@ -247,12 +273,18 @@ namespace Content.Server.GameObjects.Components.Items.Storage
             return false;
         }
 
+        public virtual Vector2 ContentsDumpPosition()
+        {
+            return Owner.Transform.WorldPosition;
+        }
+
         private void EmptyContents()
         {
             foreach (var contained in Contents.ContainedEntities.ToArray())
             {
                 if(Contents.Remove(contained))
                 {
+                    contained.Transform.WorldPosition = ContentsDumpPosition();
                     if (contained.TryGetComponent<IPhysicsComponent>(out var physics))
                     {
                         physics.CanCollide = true;
@@ -284,14 +316,18 @@ namespace Content.Server.GameObjects.Components.Items.Storage
             }
         }
 
-        protected virtual void TryOpenStorage(IEntity user)
+        public virtual bool TryOpenStorage(IEntity user)
         {
-            if (IsWeldedShut)
-            {
-                Owner.PopupMessage(user, Loc.GetString("It's welded completely shut!"));
-                return;
-            }
+            if (!CanOpen(user)) return false;
             OpenStorage();
+            return true;
+        }
+
+        public virtual bool TryCloseStorage(IEntity user)
+        {
+            if (!CanClose(user)) return false;
+            CloseStorage();
+            return true;
         }
 
         /// <inheritdoc />

Content.Server/GameObjects/Components/Items/Storage/ItemComponent.cs

@@ -58,12 +58,12 @@ namespace Content.Server.GameObjects.Components.Items.Storage
             }
         }
 
-        public void Equipped(EquippedEventArgs eventArgs)
+        public virtual void Equipped(EquippedEventArgs eventArgs)
         {
             EquippedToSlot();
         }
 
-        public void Unequipped(UnequippedEventArgs eventArgs)
+        public virtual void Unequipped(UnequippedEventArgs eventArgs)
         {
             RemovedFromSlot();
         }

Content.Server/GameObjects/Components/Items/Storage/SecureEntityStorageComponent.cs

@@ -69,15 +69,14 @@ namespace Content.Server.GameObjects.Components.Items.Storage
             base.Activate(eventArgs);
         }
 
-        protected override void TryOpenStorage(IEntity user)
+        public override bool CanOpen(IEntity user, bool silent = false)
         {
             if (Locked)
             {
                 Owner.PopupMessage(user, "It's locked!");
-                return;
+                return false;
             }
-
-            base.TryOpenStorage(user);
+            return base.CanOpen(user, silent);
         }
 
         protected override void OpenVerbGetData(IEntity user, EntityStorageComponent component, VerbData data)

Content.Server/GameObjects/Components/Kitchen/KitchenSpikeComponent.cs

@@ -23,6 +23,7 @@ namespace Content.Server.GameObjects.Components.Kitchen
         private string? _meatPrototype;
         private string _meatSource1p = "?";
         private string _meatSource0 = "?";
+        private string _meatName = "?";
 
         void IActivate.Activate(ActivateEventArgs eventArgs)
         {
@@ -38,7 +39,11 @@ namespace Content.Server.GameObjects.Components.Kitchen
 
                 if (!string.IsNullOrEmpty(_meatPrototype))
                 {
-                    Owner.EntityManager.SpawnEntity(_meatPrototype, Owner.Transform.Coordinates);
+                    var meat = Owner.EntityManager.SpawnEntity(_meatPrototype, Owner.Transform.Coordinates);
+                    if (meat != null)
+                    {
+                        meat.Name = _meatName;
+                    }
                 }
 
                 if (_meatParts != 0)
@@ -74,6 +79,9 @@ namespace Content.Server.GameObjects.Components.Kitchen
             _meatParts = 5;
             _meatSource1p = Loc.GetString("You remove some meat from {0:theName}.", victim);
             _meatSource0 = Loc.GetString("You remove the last piece of meat from {0:theName}!", victim);
+            // TODO: This could stand to be improved somehow, but it'd require Name to be much 'richer' in detail than it presently is.
+            // But Name is RobustToolbox-level, so presumably it'd have to be done in some other way (interface???)
+            _meatName = Loc.GetString("{0:name} meat", victim);
 
             if (Owner.TryGetComponent(out sprite))
             {

Content.Server/GameObjects/Components/Kitchen/MicrowaveComponent.cs

@@ -26,6 +26,7 @@ using Robust.Server.GameObjects.EntitySystems;
 using Robust.Server.Interfaces.GameObjects;
 using Robust.Shared.Audio;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components.Timers;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.IoC;
@@ -312,7 +313,7 @@ namespace Content.Server.GameObjects.Components.Kitchen
                            (_currentCookTimerTime == (uint)recipeToCook.CookTime);
             SetAppearance(MicrowaveVisualState.Cooking);
             _audioSystem.PlayFromEntity(_startCookingSound, Owner, AudioParams.Default);
-            Timer.Spawn((int)(_currentCookTimerTime * _cookTimeMultiplier), (Action)(() =>
+            Owner.SpawnTimer((int)(_currentCookTimerTime * _cookTimeMultiplier), (Action)(() =>
             {
                 if (_lostPower)
                 {

Content.Server/GameObjects/Components/Markers/TimedSpawnerComponent.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Threading;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components.Timers;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Interfaces.Random;
 using Robust.Shared.IoC;
@@ -67,7 +68,7 @@ namespace Content.Server.GameObjects.Components.Markers
         {
             TokenSource?.Cancel();
             TokenSource = new CancellationTokenSource();
-            Timer.SpawnRepeating(TimeSpan.FromSeconds(IntervalSeconds), OnTimerFired, TokenSource.Token);
+            Owner.SpawnRepeatingTimer(TimeSpan.FromSeconds(IntervalSeconds), OnTimerFired, TokenSource.Token);
         }
 
         private void OnTimerFired()

Content.Server/GameObjects/Components/Medical/CloningPodComponent.cs

@@ -1,7 +1,5 @@
 #nullable enable
 using System;
-using System.Linq;
-using System.Threading.Tasks;
 using Content.Server.GameObjects.Components.Mobs;
 using Content.Server.GameObjects.Components.Observer;
 using Content.Server.GameObjects.Components.Power.ApcNetComponents;
@@ -19,6 +17,7 @@ using Robust.Server.GameObjects.Components.UserInterface;
 using Robust.Server.Interfaces.GameObjects;
 using Robust.Server.Interfaces.Player;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.IoC;
 using Robust.Shared.Maths;
@@ -76,12 +75,12 @@ namespace Content.Server.GameObjects.Components.Medical
                 HandleGhostReturn);
         }
 
-        public void Update(float frametime)
+        public void Update(float frameTime)
         {
             if (_bodyContainer.ContainedEntity != null &&
                 Powered)
             {
-                _cloningProgress += frametime;
+                _cloningProgress += frameTime;
                 _cloningProgress = MathHelper.Clamp(_cloningProgress, 0f, _cloningTime);
             }
 
@@ -122,7 +121,9 @@ namespace Content.Server.GameObjects.Components.Medical
 
         private CloningPodBoundUserInterfaceState GetUserInterfaceState()
         {
-            return new CloningPodBoundUserInterfaceState(CloningSystem.getIdToUser(), _cloningProgress,
+            var idToUser = EntitySystem.Get<CloningSystem>().GetIdToUser();
+
+            return new CloningPodBoundUserInterfaceState(idToUser, _cloningProgress,
                 (_status == CloningPodStatus.Cloning));
         }
 
@@ -152,11 +153,12 @@ namespace Content.Server.GameObjects.Components.Medical
             switch (message.Button)
             {
                 case UiButton.Clone:
-
                     if (message.ScanId == null) return;
 
+                    var cloningSystem = EntitySystem.Get<CloningSystem>();
+
                     if (_bodyContainer.ContainedEntity != null ||
-                        !CloningSystem.Minds.TryGetValue(message.ScanId.Value, out var mind))
+                        !cloningSystem.Minds.TryGetValue(message.ScanId.Value, out var mind))
                     {
                         return;
                     }

Content.Server/GameObjects/Components/Medical/MedicalScannerComponent.cs

@@ -20,6 +20,7 @@ using Robust.Server.GameObjects.Components.UserInterface;
 using Robust.Server.Interfaces.GameObjects;
 using Robust.Server.Interfaces.Player;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Interfaces.Timing;
 using Robust.Shared.IoC;
@@ -126,9 +127,12 @@ namespace Content.Server.GameObjects.Components.Medical
                 return new MedicalScannerBoundUserInterfaceState(body.Uid, classes, types, true);
             }
 
+            var cloningSystem = EntitySystem.Get<CloningSystem>();
+            var scanned = _bodyContainer.ContainedEntity.TryGetComponent(out MindComponent? mindComponent) &&
+                         mindComponent.Mind != null &&
+                         cloningSystem.HasDnaScan(mindComponent.Mind);
 
-            return new MedicalScannerBoundUserInterfaceState(body.Uid, classes, types,
-                CloningSystem.HasDnaScan(_bodyContainer.ContainedEntity.GetComponent<MindComponent>().Mind));
+            return new MedicalScannerBoundUserInterfaceState(body.Uid, classes, types, scanned);
         }
 
         private void UpdateUserInterface()
@@ -261,7 +265,8 @@ namespace Content.Server.GameObjects.Components.Medical
                     if (_bodyContainer.ContainedEntity != null)
                     {
                         //TODO: Show a 'ERROR: Body is completely devoid of soul' if no Mind owns the entity.
-                        CloningSystem.AddToDnaScans(_playerManager
+                        var cloningSystem = EntitySystem.Get<CloningSystem>();
+                        cloningSystem.AddToDnaScans(_playerManager
                             .GetPlayersBy(playerSession =>
                             {
                                 var mindOwnedMob = playerSession.ContentData()?.Mind?.OwnedEntity;

Content.Server/GameObjects/Components/Mobs/MindComponent.cs

@@ -9,6 +9,7 @@ using Content.Shared.GameObjects.Components.Damage;
 using Content.Shared.GameObjects.EntitySystems;
 using Robust.Server.GameObjects.Components.UserInterface;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components.Timers;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Interfaces.Map;
 using Robust.Shared.IoC;
@@ -135,7 +136,7 @@ namespace Content.Server.GameObjects.Components.Mobs
                 else
                 {
                     var spawnPosition = Owner.Transform.Coordinates;
-                    Timer.Spawn(0, () =>
+                    Owner.SpawnTimer(0, () =>
                     {
                         // Async this so that we don't throw if the grid we're on is being deleted.
                         var mapMan = IoCManager.Resolve<IMapManager>();

Content.Server/GameObjects/Components/Mobs/ServerStatusEffectsComponent.cs

@@ -2,8 +2,8 @@
 using System.Collections.Generic;
 using Content.Server.GameObjects.Components.Atmos;
 using Content.Server.GameObjects.Components.Buckle;
-using Content.Server.GameObjects.Components.GUI;
 using Content.Server.GameObjects.Components.Movement;
+using Content.Server.GameObjects.EntitySystems;
 using Content.Shared.GameObjects.Components.Mobs;
 using Content.Shared.GameObjects.Components.Pulling;
 using Content.Shared.GameObjects.EntitySystems;
@@ -23,6 +23,22 @@ namespace Content.Server.GameObjects.Components.Mobs
         [ViewVariables]
         private readonly Dictionary<StatusEffect, StatusEffectStatus> _statusEffects = new Dictionary<StatusEffect, StatusEffectStatus>();
 
+        public override IReadOnlyDictionary<StatusEffect, StatusEffectStatus> Statuses => _statusEffects;
+
+        protected override void Startup()
+        {
+            base.Startup();
+
+            EntitySystem.Get<WeightlessSystem>().AddStatus(this);
+        }
+
+        public override void OnRemove()
+        {
+            EntitySystem.Get<WeightlessSystem>().RemoveStatus(this);
+
+            base.OnRemove();
+        }
+
         public override ComponentState GetComponentState()
         {
             return new StatusEffectComponentState(_statusEffects);

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

@@ -38,8 +38,6 @@ namespace Content.Server.GameObjects.Components.Mobs.State
 
         public override void ExitState(IEntity entity)
         {
-            EntitySystem.Get<StandingStateSystem>().Standing(entity);
-
             if (entity.TryGetComponent(out ServerOverlayEffectsComponent overlay))
             {
                 overlay.ClearOverlays();

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

@@ -44,8 +44,6 @@ namespace Content.Server.GameObjects.Components.Mobs.State
 
         public override void ExitState(IEntity entity)
         {
-            EntitySystem.Get<StandingStateSystem>().Standing(entity);
-
             if (entity.TryGetComponent(out IPhysicsComponent physics))
             {
                 physics.CanCollide = true;

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

@@ -1,10 +1,10 @@
-using Content.Server.GameObjects.Components.Body;
-using Content.Server.GameObjects.Components.Damage;
-using Content.Shared.GameObjects.Components.Body;
+using Content.Server.GameObjects.Components.Damage;
+using Content.Server.GameObjects.EntitySystems;
 using Content.Shared.GameObjects.Components.Damage;
 using Content.Shared.GameObjects.Components.Mobs;
 using Content.Shared.GameObjects.Components.Mobs.State;
 using Robust.Server.GameObjects;
+using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
 
 namespace Content.Server.GameObjects.Components.Mobs.State
@@ -13,6 +13,8 @@ namespace Content.Server.GameObjects.Components.Mobs.State
     {
         public override void EnterState(IEntity entity)
         {
+            EntitySystem.Get<StandingStateSystem>().Standing(entity);
+
             if (entity.TryGetComponent(out AppearanceComponent appearance))
             {
                 appearance.SetData(DamageStateVisuals.State, DamageState.Alive);

Content.Server/GameObjects/Components/Mobs/StunnableComponent.cs

@@ -5,6 +5,7 @@ using Content.Shared.GameObjects.Components.Movement;
 using Content.Shared.Interfaces.GameObjects.Components;
 using NFluidsynth;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components.Timers;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.Timing;
 using Robust.Shared.IoC;
@@ -101,7 +102,7 @@ namespace Content.Server.GameObjects.Components.Mobs
 
             if (progress >= length)
             {
-                Timer.Spawn(250, () => status.RemoveStatusEffect(StatusEffect.Stun), StatusRemoveCancellation.Token);
+                Owner.SpawnTimer(250, () => status.RemoveStatusEffect(StatusEffect.Stun), StatusRemoveCancellation.Token);
                 LastStun = null;
             }
         }