Singularity, Particle Accelerator & Radiation Collectors (#2169)

* basic radiation generator

* might need this

* thonk

* big thonk

* oop

* e

* werks

* sprite

* oopsy woopsy

* radiation

* clean up file

* makes it work, probably

* minor fixes

* resources

* progress on component

* this will no longer be necessary

* radiation go brrrr

* finally fix container issues

* out var

Co-authored-by: Remie Richards <remierichards@gmail.com>

* second out fix

* another out fix

Co-authored-by: Remie Richards <remierichards@gmail.com>

* switch case

* fix switch

* sound and improvements

* nullable

* basic containment field system

* ensure alignment

* fix beam placement logic

* field generation fully working

* fix potential crash

* working containment functionality

* extremely basic emitter functionality

* fix radiation panel naming

* emitter stuff

* oopsies

* fixes

* some fixes

* cleanup

* small fix and move emitter file

* add sprite resources for PA

* slight rework of the singulo
adds rads

* pushing for smugleaf :)

* added radiationpanels

* some fixes for the singulo

* containmentfield

* pa wip

* progress

* pa working

* emitter fix

* works :)

* ui works

* some work on ui & pa

* progress

* ui work & misc fixes

* GREYSCALE

* pa ui polish
containmentfieldgen rework

* singulo rework
added snapgrid

* getcomponent get out

* singulo rework
added collisiongroups underplating & passable

* yaml work:
- collision boxes
- singulo now unshaded

* no unlit

* misc changes

* pa wires

* add usability check

* nullable enable

* minor fix

* power need added

* reenables containment field energy drain
menu close button
singularity collider fix

* sprite replacement

* finished singulo pulling

* pjb fixes

* fixing sprites & minor adjustments

* decrease containmentfield power

* some yml adjustments

* unlit layers
singulogenerator

* singulogen

* everything works just not the powergetting on the pa
i wanna die

* Adds PA construction graphs, PA construction works

* Snap to grid parts when completing construction

* updated to newest master

* inb4 i work on power

* fixes upstream merge
adds power need to particleaccelerator

* properly implements power & apc power

* Emitters are now fancy.

* I have actually no idea how this happened.

* Give PA a wiring LayoutId

* PA is an acronym

* indicators
fixes hacking

* Singulo is a word you blasphemous IDE.

* Rewrite the PA.

* Fancy names for PA parts.

* Wiring fixes, strength wire cutting.

* fixes projectile & ignores components

* nullability errors

* fixes integration tests

Co-authored-by: unusualcrow <unusualcrow@protonmail.com>
Co-authored-by: L.E.D <10257081+unusualcrow@users.noreply.github.com>
Co-authored-by: Remie Richards <remierichards@gmail.com>
Co-authored-by: Víctor Aguilera Puerto <zddm@outlook.es>
Co-authored-by: Pieter-Jan Briers <pieterjan.briers+git@gmail.com>

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/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/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

@@ -1,4 +1,6 @@
+using System;
 using System.Collections.Generic;
+using System.Linq;
 using Content.Shared.GameObjects.Components.Sound;
 using Content.Shared.Physics;
 using Robust.Client.GameObjects.EntitySystems;
@@ -55,7 +57,15 @@ namespace Content.Client.GameObjects.Components.Sound
                 {
                     if (!schedule.Play) return; // We make sure this hasn't changed.
                     if (_audioSystem == null) _audioSystem = EntitySystem.Get<AudioSystem>();
-                    _audioStreams.Add(schedule,_audioSystem.Play(schedule.Filename, Owner, schedule.AudioParams));
+
+                    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/IgnoredComponents.cs

@@ -194,6 +194,19 @@
             "Internals",
             "GasTank",
             "BreathMask",
+            "RadiationCollector",
+            "ContainmentFieldGenerator",
+            "ContainmentField",
+            "Emitter",
+            "Singularity",
+            "SingularityGenerator",
+            "EmitterBoltComponent",
+            "ParticleProjectile",
+            "ParticleAcceleratorControlBox",
+            "ParticleAcceleratorEmitter",
+            "ParticleAcceleratorEndCap",
+            "ParticleAcceleratorFuelChamber",
+            "ParticleAcceleratorPowerBox"
         };
     }
 }

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.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/GameObjects/Components/GUI/InventoryComponent.cs

@@ -541,7 +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/PA/ParticleAcceleratorControlBoxComponent.cs

@@ -0,0 +1,724 @@
+#nullable enable
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
+using System.Threading;
+using Content.Server.GameObjects.Components.Power.ApcNetComponents;
+using Content.Server.GameObjects.Components.Power.PowerNetComponents;
+using Content.Server.GameObjects.Components.VendingMachines;
+using Content.Server.Utility;
+using Content.Shared.GameObjects.Components;
+using Content.Shared.GameObjects.EntitySystems;
+using Content.Shared.Interfaces.GameObjects.Components;
+using Robust.Server.GameObjects;
+using Robust.Server.GameObjects.Components.UserInterface;
+using Robust.Server.Interfaces.GameObjects;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Localization;
+using Robust.Shared.Log;
+using Robust.Shared.Maths;
+using Robust.Shared.Serialization;
+using Robust.Shared.Utility;
+using Robust.Shared.ViewVariables;
+using static Content.Shared.GameObjects.Components.SharedWiresComponent;
+using Timer = Robust.Shared.Timers.Timer;
+
+namespace Content.Server.GameObjects.Components.PA
+{
+    // This component is in control of the PA's logic because it's the one to contain the wires for hacking.
+    // And also it's the only PA component that meaningfully needs to work on its own.
+    /// <summary>
+    ///     Is the computer thing people interact with to control the PA.
+    ///     Also contains primary logic for actual PA behavior, part scanning, etc...
+    /// </summary>
+    [ComponentReference(typeof(IActivate))]
+    [RegisterComponent]
+    public class ParticleAcceleratorControlBoxComponent : ParticleAcceleratorPartComponent, IActivate, IWires
+    {
+        public override string Name => "ParticleAcceleratorControlBox";
+
+        [ViewVariables]
+        private BoundUserInterface? UserInterface => Owner.GetUIOrNull(ParticleAcceleratorControlBoxUiKey.Key);
+
+        /// <summary>
+        ///     Power receiver for the control console itself.
+        /// </summary>
+        [ViewVariables] private PowerReceiverComponent? _powerReceiverComponent;
+
+        [ViewVariables] private ParticleAcceleratorFuelChamberComponent? _partFuelChamber;
+        [ViewVariables] private ParticleAcceleratorEndCapComponent? _partEndCap;
+        [ViewVariables] private ParticleAcceleratorPowerBoxComponent? _partPowerBox;
+        [ViewVariables] private ParticleAcceleratorEmitterComponent? _partEmitterLeft;
+        [ViewVariables] private ParticleAcceleratorEmitterComponent? _partEmitterCenter;
+        [ViewVariables] private ParticleAcceleratorEmitterComponent? _partEmitterRight;
+        [ViewVariables] private ParticleAcceleratorPowerState _selectedStrength = ParticleAcceleratorPowerState.Standby;
+
+        [ViewVariables] private bool _isAssembled;
+
+        // Enabled: power switch is on
+        [ViewVariables] private bool _isEnabled;
+
+        // Powered: power switch is on AND the PA is actively firing (if not on standby)
+        [ViewVariables] private bool _isPowered;
+        [ViewVariables] private bool _wireInterfaceBlocked;
+        [ViewVariables] private bool _wirePowerBlocked;
+        [ViewVariables] private bool _wireLimiterCut;
+        [ViewVariables] private bool _wireStrengthCut;
+        [ViewVariables] private CancellationTokenSource? _fireCancelTokenSrc;
+
+        /// <summary>
+        ///     Delay between consecutive PA shots.
+        /// </summary>
+        [ViewVariables(VVAccess.ReadWrite)] private TimeSpan _firingDelay;
+
+        [ViewVariables(VVAccess.ReadWrite)] private int _powerDrawBase;
+        [ViewVariables(VVAccess.ReadWrite)] private int _powerDrawMult;
+
+        [ViewVariables] private bool ConsolePowered => _powerReceiverComponent?.Powered ?? true;
+
+        public ParticleAcceleratorControlBoxComponent()
+        {
+            Master = this;
+        }
+
+        private ParticleAcceleratorPowerState MaxPower => _wireLimiterCut
+            ? ParticleAcceleratorPowerState.Level3
+            : ParticleAcceleratorPowerState.Level2;
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            // Fun fact:
+            // On /vg/station (can't check TG because lol they removed singulo),
+            // the PA emitter parts have var/fire_delay = 50.
+            // For anybody from the future not BYOND-initiated, that's 5 seconds.
+            // However, /obj/machinery/particle_accelerator/control_box/process(),
+            // which calls emit_particle() on the emitters,
+            // only gets called every *2* seconds, because of CarnMC timing.
+            // So the *actual* effective firing delay of the PA is 6 seconds, not 5 as listed in the code.
+            // So...
+            // I have reflected that here to be authentic.
+            serializer.DataField(ref _firingDelay, "fireDelay", TimeSpan.FromSeconds(6));
+            serializer.DataField(ref _powerDrawBase, "powerDrawBase", 500);
+            serializer.DataField(ref _powerDrawMult, "powerDrawMult", 1500);
+        }
+
+        public override void Initialize()
+        {
+            base.Initialize();
+            if (UserInterface != null)
+            {
+                UserInterface.OnReceiveMessage += UserInterfaceOnOnReceiveMessage;
+            }
+
+            if (!Owner.TryGetComponent(out _powerReceiverComponent))
+            {
+                Logger.Error("ParticleAcceleratorControlBox was created without PowerReceiverComponent");
+                return;
+            }
+
+            _powerReceiverComponent.OnPowerStateChanged += OnPowerStateChanged;
+            _powerReceiverComponent.Load = 250;
+        }
+
+        protected override void Startup()
+        {
+            base.Startup();
+
+            UpdateWireStatus();
+        }
+
+        // This is the power state for the PA control box itself.
+        // Keep in mind that the PA itself can keep firing as long as the HV cable under the power box has... power.
+        private void OnPowerStateChanged(object? sender, PowerStateEventArgs e)
+        {
+            UpdateAppearance();
+
+            if (!e.Powered)
+            {
+                UserInterface?.CloseAll();
+            }
+        }
+
+        private void UserInterfaceOnOnReceiveMessage(ServerBoundUserInterfaceMessage obj)
+        {
+            if (!ConsolePowered)
+            {
+                return;
+            }
+
+
+            if (obj.Session.AttachedEntity == null ||
+                !ActionBlockerSystem.CanInteract(obj.Session.AttachedEntity))
+            {
+                return;
+            }
+
+            if (_wireInterfaceBlocked)
+            {
+                return;
+            }
+
+            switch (obj.Message)
+            {
+                case ParticleAcceleratorSetEnableMessage enableMessage:
+                    if (enableMessage.Enabled)
+                    {
+                        SwitchOn();
+                    }
+                    else
+                    {
+                        SwitchOff();
+                    }
+
+                    break;
+
+                case ParticleAcceleratorSetPowerStateMessage stateMessage:
+                    SetStrength(stateMessage.State);
+                    break;
+
+                case ParticleAcceleratorRescanPartsMessage _:
+                    RescanParts();
+                    break;
+            }
+
+            UpdateUI();
+        }
+
+        public void UpdateUI()
+        {
+            var draw = 0;
+            var receive = 0;
+
+            if (_isEnabled)
+            {
+                draw = _partPowerBox!.PowerConsumerComponent!.DrawRate;
+                receive = _partPowerBox!.PowerConsumerComponent!.ReceivedPower;
+            }
+
+            var state = new ParticleAcceleratorUIState(
+                _isAssembled,
+                _isEnabled,
+                _selectedStrength,
+                draw,
+                receive,
+                _partEmitterLeft != null,
+                _partEmitterCenter != null,
+                _partEmitterRight != null,
+                _partPowerBox != null,
+                _partFuelChamber != null,
+                _partEndCap != null,
+                _wireInterfaceBlocked,
+                MaxPower,
+                _wirePowerBlocked);
+
+            UserInterface?.SetState(state);
+        }
+
+        void IActivate.Activate(ActivateEventArgs eventArgs)
+        {
+            if (!eventArgs.User.TryGetComponent(out IActorComponent? actor))
+            {
+                return;
+            }
+
+            if (Owner.TryGetComponent<WiresComponent>(out var wires) && wires.IsPanelOpen)
+            {
+                wires.OpenInterface(actor.playerSession);
+            }
+            else
+            {
+                if (!ConsolePowered)
+                {
+                    return;
+                }
+
+                UserInterface?.Toggle(actor.playerSession);
+                UpdateUI();
+            }
+        }
+
+        public override void OnRemove()
+        {
+            UserInterface?.CloseAll();
+            base.OnRemove();
+        }
+
+        void IWires.RegisterWires(WiresComponent.WiresBuilder builder)
+        {
+            builder.CreateWire(ParticleAcceleratorControlBoxWires.Toggle);
+            builder.CreateWire(ParticleAcceleratorControlBoxWires.Strength);
+            builder.CreateWire(ParticleAcceleratorControlBoxWires.Interface);
+            builder.CreateWire(ParticleAcceleratorControlBoxWires.Limiter);
+            builder.CreateWire(ParticleAcceleratorControlBoxWires.Nothing);
+        }
+
+        public void WiresUpdate(WiresUpdateEventArgs args)
+        {
+            switch (args.Identifier)
+            {
+                case ParticleAcceleratorControlBoxWires.Toggle:
+                    if (args.Action == WiresAction.Pulse)
+                    {
+                        if (_isEnabled)
+                        {
+                            SwitchOff();
+                        }
+                        else
+                        {
+                            SwitchOn();
+                        }
+                    }
+                    else
+                    {
+                        _wirePowerBlocked = args.Action == WiresAction.Cut;
+                        if (_isEnabled)
+                        {
+                            SwitchOff();
+                        }
+                    }
+
+                    break;
+
+                case ParticleAcceleratorControlBoxWires.Strength:
+                    if (args.Action == WiresAction.Pulse)
+                    {
+                        SetStrength(_selectedStrength + 1);
+                    }
+                    else
+                    {
+                        _wireStrengthCut = args.Action == WiresAction.Cut;
+                    }
+
+                    break;
+
+                case ParticleAcceleratorControlBoxWires.Interface:
+                    if (args.Action == WiresAction.Pulse)
+                    {
+                        _wireInterfaceBlocked ^= true;
+                    }
+                    else
+                    {
+                        _wireInterfaceBlocked = args.Action == WiresAction.Cut;
+                    }
+
+                    break;
+
+                case ParticleAcceleratorControlBoxWires.Limiter:
+                    if (args.Action == WiresAction.Pulse)
+                    {
+                        Owner.PopupMessageEveryone(Loc.GetString("The control box makes a whirring noise."));
+                    }
+                    else
+                    {
+                        _wireLimiterCut = args.Action == WiresAction.Cut;
+                        if (_selectedStrength == ParticleAcceleratorPowerState.Level3 && !_wireLimiterCut)
+                        {
+                            // Yes, it's a feature that mending this wire WON'T WORK if the strength wire is also cut.
+                            // Since that blocks SetStrength().
+                            SetStrength(ParticleAcceleratorPowerState.Level2);
+                        }
+                    }
+
+                    break;
+            }
+
+            UpdateUI();
+            UpdateWireStatus();
+        }
+
+        private void UpdateWireStatus()
+        {
+            if (!Owner.TryGetComponent(out WiresComponent? wires))
+            {
+                return;
+            }
+
+            var powerBlock = _wirePowerBlocked;
+            var keyboardLight = new StatusLightData(Color.Green,
+                _wireInterfaceBlocked
+                    ? StatusLightState.BlinkingFast
+                    : StatusLightState.On,
+                "KEYB");
+
+            var powerLight = new StatusLightData(
+                Color.Yellow,
+                powerBlock ? StatusLightState.Off : StatusLightState.On,
+                "POWR");
+
+            var limiterLight = new StatusLightData(
+                _wireLimiterCut ? Color.Purple : Color.Teal,
+                StatusLightState.On,
+                "LIMT");
+
+            var strengthLight = new StatusLightData(
+                Color.Blue,
+                _wireStrengthCut ? StatusLightState.BlinkingSlow : StatusLightState.On,
+                "STRC");
+
+            wires.SetStatus(ParticleAcceleratorWireStatus.Keyboard, keyboardLight);
+            wires.SetStatus(ParticleAcceleratorWireStatus.Power, powerLight);
+            wires.SetStatus(ParticleAcceleratorWireStatus.Limiter, limiterLight);
+            wires.SetStatus(ParticleAcceleratorWireStatus.Strength, strengthLight);
+        }
+
+        public void RescanParts()
+        {
+            SwitchOff();
+            foreach (var part in AllParts())
+            {
+                part.Master = null;
+            }
+
+            _isAssembled = false;
+            _partFuelChamber = null;
+            _partEndCap = null;
+            _partPowerBox = null;
+            _partEmitterLeft = null;
+            _partEmitterCenter = null;
+            _partEmitterRight = null;
+
+            // Find fuel chamber first by scanning cardinals.
+            if (SnapGrid != null)
+            {
+                foreach (var maybeFuel in SnapGrid.GetCardinalNeighborCells())
+                {
+                    if (maybeFuel.Owner.TryGetComponent(out _partFuelChamber))
+                    {
+                        break;
+                    }
+                }
+            }
+
+            if (_partFuelChamber == null)
+            {
+                UpdateUI();
+                return;
+            }
+
+            // Align ourselves to match fuel chamber orientation.
+            // This means that if you mess up the orientation of the control box it's not a big deal,
+            // because the sprite is far from obvious about the orientation.
+            Owner.Transform.LocalRotation = _partFuelChamber.Owner.Transform.LocalRotation;
+
+            var offsetEndCap = RotateOffset((1, 1));
+            var offsetPowerBox = RotateOffset((1, -1));
+            var offsetEmitterLeft = RotateOffset((0, -2));
+            var offsetEmitterCenter = RotateOffset((1, -2));
+            var offsetEmitterRight = RotateOffset((2, -2));
+
+            ScanPart(offsetEndCap, out _partEndCap);
+            ScanPart(offsetPowerBox, out _partPowerBox);
+
+            if (!ScanPart(offsetEmitterCenter, out _partEmitterCenter) ||
+                _partEmitterCenter.Type != ParticleAcceleratorEmitterType.Center)
+            {
+                // if it's the wrong type we need to clear this to avoid shenanigans.
+                _partEmitterCenter = null;
+            }
+
+            if (ScanPart(offsetEmitterLeft, out _partEmitterLeft) &&
+                _partEmitterLeft.Type != ParticleAcceleratorEmitterType.Left)
+            {
+                _partEmitterLeft = null;
+            }
+
+            if (ScanPart(offsetEmitterRight, out _partEmitterRight) &&
+                _partEmitterRight.Type != ParticleAcceleratorEmitterType.Right)
+            {
+                _partEmitterRight = null;
+            }
+
+            _isAssembled = _partFuelChamber != null &&
+                           _partPowerBox != null &&
+                           _partEmitterCenter != null &&
+                           _partEmitterLeft != null &&
+                           _partEmitterRight != null &&
+                           _partEndCap != null;
+
+            foreach (var part in AllParts())
+            {
+                part.Master = this;
+            }
+
+            UpdateUI();
+
+            Vector2i RotateOffset(in Vector2i vec)
+            {
+                var rot = new Angle(Owner.Transform.LocalRotation + Math.PI / 2);
+                return (Vector2i) rot.RotateVec(vec);
+            }
+        }
+
+        private bool ScanPart<T>(Vector2i offset, [NotNullWhen(true)] out T? part)
+            where T : ParticleAcceleratorPartComponent
+        {
+            foreach (var ent in SnapGrid!.GetOffset(offset))
+            {
+                if (ent.TryGetComponent(out part) && !part.Deleted)
+                {
+                    return true;
+                }
+            }
+
+            part = default;
+            return false;
+        }
+
+        private IEnumerable<ParticleAcceleratorPartComponent> AllParts()
+        {
+            if (_partFuelChamber != null)
+                yield return _partFuelChamber;
+            if (_partEndCap != null)
+                yield return _partEndCap;
+            if (_partPowerBox != null)
+                yield return _partPowerBox;
+            if (_partEmitterLeft != null)
+                yield return _partEmitterLeft;
+            if (_partEmitterCenter != null)
+                yield return _partEmitterCenter;
+            if (_partEmitterRight != null)
+                yield return _partEmitterRight;
+        }
+
+        private void SwitchOn()
+        {
+            DebugTools.Assert(_isAssembled);
+
+            if (_isEnabled)
+            {
+                return;
+            }
+
+            _isEnabled = true;
+            UpdatePowerDraw();
+            // If we don't have power yet we'll turn on when we receive more power from the powernet.
+            // if we do we'll just go and turn on right now.
+            if (_partPowerBox!.PowerConsumerComponent!.ReceivedPower >= _partPowerBox.PowerConsumerComponent.DrawRate)
+            {
+                PowerOn();
+            }
+
+            UpdateUI();
+        }
+
+        private void UpdatePowerDraw()
+        {
+            _partPowerBox!.PowerConsumerComponent!.DrawRate = PowerDrawFor(_selectedStrength);
+        }
+
+        private void SwitchOff()
+        {
+            _isEnabled = false;
+            PowerOff();
+            UpdateUI();
+        }
+
+        private void PowerOn()
+        {
+            DebugTools.Assert(_isEnabled);
+            DebugTools.Assert(_isAssembled);
+
+            if (_isPowered)
+            {
+                return;
+            }
+
+            _isPowered = true;
+            UpdateFiring();
+            UpdatePartVisualStates();
+            UpdateUI();
+        }
+
+        private void PowerOff()
+        {
+            if (!_isPowered)
+            {
+                return;
+            }
+
+            _isPowered = false;
+            UpdateFiring();
+            UpdateUI();
+            UpdatePartVisualStates();
+        }
+
+        private void SetStrength(ParticleAcceleratorPowerState state)
+        {
+            if (_wireStrengthCut)
+            {
+                return;
+            }
+
+            state = (ParticleAcceleratorPowerState) MathHelper.Clamp(
+                (int) state,
+                (int) ParticleAcceleratorPowerState.Standby,
+                (int) MaxPower);
+
+            _selectedStrength = state;
+            UpdateAppearance();
+            UpdatePartVisualStates();
+
+            if (_isEnabled)
+            {
+                UpdatePowerDraw();
+                UpdateFiring();
+            }
+        }
+
+        private void UpdateAppearance()
+        {
+            if (Owner.TryGetComponent(out AppearanceComponent? appearance))
+            {
+                appearance.SetData(ParticleAcceleratorVisuals.VisualState,
+                    _powerReceiverComponent!.Powered
+                        ? (ParticleAcceleratorVisualState) _selectedStrength
+                        : ParticleAcceleratorVisualState.Unpowered);
+            }
+        }
+
+        private void UpdateFiring()
+        {
+            if (!_isPowered || _selectedStrength == ParticleAcceleratorPowerState.Standby)
+            {
+                StopFiring();
+            }
+            else
+            {
+                StartFiring();
+            }
+        }
+
+        private void StartFiring()
+        {
+            EverythingIsWellToFire();
+
+            _fireCancelTokenSrc?.Cancel();
+            _fireCancelTokenSrc = new CancellationTokenSource();
+            var cancelToken = _fireCancelTokenSrc.Token;
+            Timer.SpawnRepeating(_firingDelay, Fire, cancelToken);
+        }
+
+        private void Fire()
+        {
+            EverythingIsWellToFire();
+
+            _partEmitterCenter!.Fire(_selectedStrength);
+            _partEmitterLeft!.Fire(_selectedStrength);
+            _partEmitterRight!.Fire(_selectedStrength);
+        }
+
+        [Conditional("DEBUG")]
+        private void EverythingIsWellToFire()
+        {
+            DebugTools.Assert(!Deleted);
+            DebugTools.Assert(_isPowered);
+            DebugTools.Assert(_selectedStrength != ParticleAcceleratorPowerState.Standby);
+            DebugTools.Assert(_isAssembled);
+            DebugTools.Assert(_partEmitterCenter != null);
+            DebugTools.Assert(_partEmitterLeft != null);
+            DebugTools.Assert(_partEmitterRight != null);
+        }
+
+        private void StopFiring()
+        {
+            _fireCancelTokenSrc?.Cancel();
+            _fireCancelTokenSrc = null;
+        }
+
+        private int PowerDrawFor(ParticleAcceleratorPowerState strength)
+        {
+            return strength switch
+            {
+                ParticleAcceleratorPowerState.Standby => 0,
+                ParticleAcceleratorPowerState.Level0 => 1,
+                ParticleAcceleratorPowerState.Level1 => 3,
+                ParticleAcceleratorPowerState.Level2 => 4,
+                ParticleAcceleratorPowerState.Level3 => 5,
+                _ => 0
+            } * _powerDrawMult + _powerDrawBase;
+        }
+
+        public void PowerBoxReceivedChanged(object? sender, ReceivedPowerChangedEventArgs eventArgs)
+        {
+            DebugTools.Assert(_isAssembled);
+
+            if (!_isEnabled)
+            {
+                return;
+            }
+
+            var isPowered = eventArgs.ReceivedPower >= eventArgs.DrawRate;
+            if (isPowered)
+            {
+                PowerOn();
+            }
+            else
+            {
+                PowerOff();
+            }
+
+            UpdateUI();
+        }
+
+        private void UpdatePartVisualStates()
+        {
+            // UpdatePartVisualState(ControlBox);
+            UpdatePartVisualState(_partFuelChamber);
+            UpdatePartVisualState(_partPowerBox);
+            UpdatePartVisualState(_partEmitterCenter);
+            UpdatePartVisualState(_partEmitterLeft);
+            UpdatePartVisualState(_partEmitterRight);
+            //no endcap because it has no powerlevel-sprites
+        }
+
+        private void UpdatePartVisualState(ParticleAcceleratorPartComponent? component)
+        {
+            if (component == null || !component.Owner.TryGetComponent<AppearanceComponent>(out var appearanceComponent))
+            {
+                return;
+            }
+
+            var state = _isPowered
+                ? (ParticleAcceleratorVisualState) _selectedStrength
+                : ParticleAcceleratorVisualState.Unpowered;
+            appearanceComponent.SetData(ParticleAcceleratorVisuals.VisualState, state);
+        }
+
+        public override void Rotated()
+        {
+            // We rotate OURSELVES when scanning for parts, so don't actually run rescan on rotate.
+            // That would be silly.
+        }
+
+        public enum ParticleAcceleratorControlBoxWires
+        {
+            /// <summary>
+            /// Pulse toggles Power. Cut permanently turns off until Mend.
+            /// </summary>
+            Toggle,
+
+            /// <summary>
+            /// Pulsing increases level until at limit.
+            /// </summary>
+            Strength,
+
+            /// <summary>
+            /// Pulsing toggles Button-Disabled on UI. Cut disables, Mend enables.
+            /// </summary>
+            Interface,
+
+            /// <summary>
+            /// Pulsing will produce short message about whirring noise. Cutting increases the max level to 3. Mending reduces it back to 2.
+            /// </summary>
+            Limiter,
+
+            /// <summary>
+            /// Does Nothing
+            /// </summary>
+            Nothing
+        }
+    }
+}

Content.Server/GameObjects/Components/PA/ParticleAcceleratorEmitterComponent.cs

@@ -0,0 +1,50 @@
+using Content.Shared.GameObjects.Components;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Log;
+using Robust.Shared.Serialization;
+
+namespace Content.Server.GameObjects.Components.PA
+{
+    [RegisterComponent]
+    [ComponentReference(typeof(ParticleAcceleratorPartComponent))]
+    public class ParticleAcceleratorEmitterComponent : ParticleAcceleratorPartComponent
+    {
+        [Dependency] private IEntityManager _entityManager = null!;
+
+        public override string Name => "ParticleAcceleratorEmitter";
+        public ParticleAcceleratorEmitterType Type;
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            serializer.DataField(ref Type, "emitterType", ParticleAcceleratorEmitterType.Center);
+        }
+
+        public void Fire(ParticleAcceleratorPowerState strength)
+        {
+            var projectile = _entityManager.SpawnEntity("ParticlesProjectile", Owner.Transform.Coordinates);
+
+            if (!projectile.TryGetComponent<ParticleProjectileComponent>(out var particleProjectileComponent))
+            {
+                Logger.Error("ParticleAcceleratorEmitter tried firing particles, but they was spawned without a ParticleProjectileComponent");
+                return;
+            }
+            particleProjectileComponent.Fire(strength, Owner.Transform.WorldRotation, Owner);
+        }
+
+        public override string ToString()
+        {
+            return base.ToString() + $" EmitterType:{Type}";
+        }
+    }
+
+    public enum ParticleAcceleratorEmitterType
+    {
+        Left,
+        Center,
+        Right
+    }
+}

Content.Server/GameObjects/Components/PA/ParticleAcceleratorEndCapComponent.cs

@@ -0,0 +1,11 @@
+using Robust.Shared.GameObjects;
+
+namespace Content.Server.GameObjects.Components.PA
+{
+    [RegisterComponent]
+    [ComponentReference(typeof(ParticleAcceleratorPartComponent))]
+    public class ParticleAcceleratorEndCapComponent : ParticleAcceleratorPartComponent
+    {
+        public override string Name => "ParticleAcceleratorEndCap";
+    }
+}

Content.Server/GameObjects/Components/PA/ParticleAcceleratorFuelChamberComponent.cs

@@ -0,0 +1,11 @@
+using Robust.Shared.GameObjects;
+
+namespace Content.Server.GameObjects.Components.PA
+{
+    [RegisterComponent]
+    [ComponentReference(typeof(ParticleAcceleratorPartComponent))]
+    public class ParticleAcceleratorFuelChamberComponent : ParticleAcceleratorPartComponent
+    {
+        public override string Name => "ParticleAcceleratorFuelChamber";
+    }
+}

Content.Server/GameObjects/Components/PA/ParticleAcceleratorPartComponent.cs

@@ -0,0 +1,58 @@
+#nullable enable
+using Content.Server.Utility;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components;
+using Robust.Shared.GameObjects.Components.Transform;
+using Robust.Shared.Log;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Server.GameObjects.Components.PA
+{
+    public abstract class ParticleAcceleratorPartComponent : Component
+    {
+        [ViewVariables] private PhysicsComponent? _collidableComponent;
+        [ViewVariables] public ParticleAcceleratorControlBoxComponent? Master;
+        [ViewVariables] protected SnapGridComponent? SnapGrid;
+
+        public override void Initialize()
+        {
+            base.Initialize();
+            // FIXME: this has to be an entity system, full stop.
+            if (!Owner.TryGetComponent(out _collidableComponent))
+            {
+                Logger.Error("ParticleAcceleratorPartComponent created with no CollidableComponent");
+            }
+            else
+            {
+                _collidableComponent.AnchoredChanged += OnAnchorChanged;
+            }
+
+            if (!Owner.TryGetComponent(out SnapGrid))
+            {
+                Logger.Error("ParticleAcceleratorControlBox was created without SnapGridComponent");
+            }
+        }
+
+        public void OnAnchorChanged()
+        {
+            RescanIfPossible();
+        }
+
+        public override void OnRemove()
+        {
+            base.OnRemove();
+
+            RescanIfPossible();
+        }
+
+        private void RescanIfPossible()
+        {
+            Master?.RescanParts();
+        }
+
+        public virtual void Rotated()
+        {
+            RescanIfPossible();
+        }
+    }
+}

Content.Server/GameObjects/Components/PA/ParticleAcceleratorPowerBoxComponent.cs

@@ -0,0 +1,33 @@
+#nullable enable
+using Content.Server.GameObjects.Components.Power.PowerNetComponents;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Log;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Server.GameObjects.Components.PA
+{
+    [RegisterComponent]
+    [ComponentReference(typeof(ParticleAcceleratorPartComponent))]
+    public class ParticleAcceleratorPowerBoxComponent : ParticleAcceleratorPartComponent
+    {
+        public override string Name => "ParticleAcceleratorPowerBox";
+        [ViewVariables] public PowerConsumerComponent? PowerConsumerComponent;
+
+        public override void Initialize()
+        {
+            base.Initialize();
+            if (Owner.TryGetComponent(out PowerConsumerComponent))
+            {
+                PowerConsumerComponent.OnReceivedPowerChanged += PowerReceivedChanged;
+                return;
+            }
+
+            Logger.Error($"ParticleAcceleratorPowerBoxComponent Component initialized without PowerConsumerComponent.");
+        }
+
+        private void PowerReceivedChanged(object? sender, ReceivedPowerChangedEventArgs e)
+        {
+            Master?.PowerBoxReceivedChanged(sender, e);
+        }
+    }
+}

Content.Server/GameObjects/Components/PA/ParticleProjectileComponent.cs

@@ -0,0 +1,94 @@
+using System;
+using Content.Server.GameObjects.Components.Projectiles;
+using Content.Server.GameObjects.Components.Singularity;
+using Content.Shared.GameObjects.Components;
+using Content.Shared.Physics;
+using Robust.Server.GameObjects;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Log;
+using Robust.Shared.Maths;
+using Robust.Shared.Timers;
+
+namespace Content.Server.GameObjects.Components.PA
+{
+    [RegisterComponent]
+    public class ParticleProjectileComponent : Component, ICollideBehavior
+    {
+        public override string Name => "ParticleProjectile";
+        private ParticleAcceleratorPowerState _state;
+        public void CollideWith(IEntity collidedWith)
+        {
+            if (collidedWith.TryGetComponent<SingularityComponent>(out var singularityComponent))
+            {
+                var multiplier = _state switch
+                {
+                    ParticleAcceleratorPowerState.Standby => 0,
+                    ParticleAcceleratorPowerState.Level0 => 1,
+                    ParticleAcceleratorPowerState.Level1 => 3,
+                    ParticleAcceleratorPowerState.Level2 => 6,
+                    ParticleAcceleratorPowerState.Level3 => 10,
+                    _ => 0
+                };
+                singularityComponent.Energy += 10 * multiplier;
+                Owner.Delete();
+            }else if (collidedWith.TryGetComponent<SingularityGeneratorComponent>(out var singularityGeneratorComponent)
+            )
+            {
+                singularityGeneratorComponent.Power += _state switch
+                {
+                    ParticleAcceleratorPowerState.Standby => 0,
+                    ParticleAcceleratorPowerState.Level0 => 1,
+                    ParticleAcceleratorPowerState.Level1 => 2,
+                    ParticleAcceleratorPowerState.Level2 => 4,
+                    ParticleAcceleratorPowerState.Level3 => 8,
+                    _ => 0
+                };
+                Owner.Delete();
+            }
+        }
+
+        public void Fire(ParticleAcceleratorPowerState state, Angle angle, IEntity firer)
+        {
+            _state = state;
+
+            if (!Owner.TryGetComponent<PhysicsComponent>(out var physicsComponent))
+            {
+                Logger.Error("ParticleProjectile tried firing, but it was spawned without a CollidableComponent");
+                return;
+            }
+            physicsComponent.Status = BodyStatus.InAir;
+
+            if (!Owner.TryGetComponent<ProjectileComponent>(out var projectileComponent))
+            {
+                Logger.Error("ParticleProjectile tried firing, but it was spawned without a ProjectileComponent");
+                return;
+            }
+            projectileComponent.IgnoreEntity(firer);
+
+            var suffix = state switch
+            {
+                ParticleAcceleratorPowerState.Level0 => "0",
+                ParticleAcceleratorPowerState.Level1 => "1",
+                ParticleAcceleratorPowerState.Level2 => "2",
+                ParticleAcceleratorPowerState.Level3 => "3",
+                _ => "0"
+            };
+
+            if (!Owner.TryGetComponent<SpriteComponent>(out var spriteComponent))
+            {
+                Logger.Error("ParticleProjectile tried firing, but it was spawned without a SpriteComponent");
+                return;
+            }
+            spriteComponent.LayerSetState(0, $"particle{suffix}");
+
+            physicsComponent
+                .EnsureController<BulletController>()
+                .LinearVelocity = angle.ToVec() * 20f;
+
+            Owner.Transform.LocalRotation = new Angle(angle + Angle.FromDegrees(180));
+            Timer.Spawn(3000, () => Owner.Delete());
+        }
+    }
+}

Content.Server/GameObjects/Components/Power/PowerNetComponents/PowerConsumerComponent.cs

@@ -1,4 +1,5 @@
-using System.Diagnostics;
+using System;
+using System.Diagnostics;
 using Content.Server.GameObjects.Components.NodeContainer.NodeGroups;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization;
@@ -33,6 +34,8 @@ namespace Content.Server.GameObjects.Components.Power.PowerNetComponents
         public int ReceivedPower { get => _receivedPower; set => SetReceivedPower(value); }
         private int _receivedPower;
 
+        public event EventHandler<ReceivedPowerChangedEventArgs> OnReceivedPowerChanged;
+
         public override void ExposeData(ObjectSerializer serializer)
         {
             base.ExposeData(serializer);
@@ -60,7 +63,9 @@ namespace Content.Server.GameObjects.Components.Power.PowerNetComponents
         private void SetReceivedPower(int newReceivedPower)
         {
             Debug.Assert(newReceivedPower >= 0 && newReceivedPower <= DrawRate);
+            if(_receivedPower == newReceivedPower) return;
             _receivedPower = newReceivedPower;
+            OnReceivedPowerChanged?.Invoke(this, new ReceivedPowerChangedEventArgs(_drawRate, _receivedPower));
         }
 
         private void SetPriority(Priority newPriority)
@@ -75,4 +80,16 @@ namespace Content.Server.GameObjects.Components.Power.PowerNetComponents
         First,
         Last,
     }
+
+    public class ReceivedPowerChangedEventArgs : EventArgs
+    {
+        public readonly int DrawRate;
+        public readonly int ReceivedPower;
+
+        public ReceivedPowerChangedEventArgs(int drawRate, int receivedPower)
+        {
+            DrawRate = drawRate;
+            ReceivedPower = receivedPower;
+        }
+    }
 }

Content.Server/GameObjects/Components/Power/PowerNetComponents/RadiationCollectorComponent.cs

@@ -0,0 +1,97 @@
+using System;
+using System.Threading;
+using Content.Server.Utility;
+using Content.Shared.GameObjects.Components;
+using Content.Shared.GameObjects.Components.Doors;
+using Content.Shared.GameObjects.Components.Singularity;
+using Content.Shared.Interfaces;
+using Content.Shared.Interfaces.GameObjects.Components;
+using Robust.Server.GameObjects;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components;
+using Robust.Shared.Interfaces.Timing;
+using Robust.Shared.IoC;
+using Robust.Shared.Localization;
+using Robust.Shared.Log;
+using Timer = Robust.Shared.Timers.Timer;
+
+namespace Content.Server.GameObjects.Components.Power.PowerNetComponents
+{
+    [RegisterComponent]
+    public class RadiationCollectorComponent : PowerSupplierComponent, IInteractHand, IRadiationAct
+    {
+        [Dependency] private readonly IGameTiming _gameTiming = default!;
+
+        public override string Name => "RadiationCollector";
+        private bool _enabled;
+        private TimeSpan _coolDownEnd;
+
+        private PhysicsComponent _collidableComponent;
+
+        public override void Initialize()
+        {
+            base.Initialize();
+            if (!Owner.TryGetComponent(out _collidableComponent))
+            {
+                Logger.Error("RadiationCollectorComponent created with no CollidableComponent");
+                return;
+            }
+            _collidableComponent.AnchoredChanged += OnAnchoredChanged;
+        }
+
+        private void OnAnchoredChanged()
+        {
+            if(_collidableComponent.Anchored) Owner.SnapToGrid();
+        }
+
+        bool IInteractHand.InteractHand(InteractHandEventArgs eventArgs)
+        {
+            var curTime = _gameTiming.CurTime;
+
+            if(curTime < _coolDownEnd)
+                return true;
+
+            if (!_enabled)
+            {
+                Owner.PopupMessage(eventArgs.User, Loc.GetString("The collector turns on."));
+                EnableCollection();
+            }
+            else
+            {
+                Owner.PopupMessage(eventArgs.User, Loc.GetString("The collector turns off."));
+                DisableCollection();
+            }
+
+            _coolDownEnd = curTime + TimeSpan.FromSeconds(0.81f);
+
+            return true;
+        }
+
+        void EnableCollection()
+        {
+            _enabled = true;
+            SetAppearance(RadiationCollectorVisualState.Activating);
+        }
+
+        void DisableCollection()
+        {
+            _enabled = false;
+            SetAppearance(RadiationCollectorVisualState.Deactivating);
+        }
+
+        public void RadiationAct(float frameTime, SharedRadiationPulseComponent radiation)
+        {
+            if (!_enabled) return;
+
+            SupplyRate = (int) (frameTime * radiation.RadsPerSecond * 3000f);
+        }
+
+        protected void SetAppearance(RadiationCollectorVisualState state)
+        {
+            if (Owner.TryGetComponent(out AppearanceComponent appearance))
+            {
+                appearance.SetData(RadiationCollectorVisuals.VisualState, state);
+            }
+        }
+    }
+}

Content.Server/GameObjects/Components/Projectiles/EmitterBoltComponent.cs

@@ -0,0 +1,13 @@
+using Content.Server.GameObjects.Components.Singularity;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components;
+using Robust.Shared.Interfaces.GameObjects;
+
+namespace Content.Server.GameObjects.Components.Projectiles
+{
+    [RegisterComponent]
+    public class EmitterBoltComponent : Component
+    {
+        public override string Name => "EmitterBoltComponent";
+    }
+}

Content.Server/GameObjects/Components/Projectiles/ProjectileComponent.cs

@@ -60,6 +60,8 @@ namespace Content.Server.GameObjects.Components.Projectiles
             Dirty();
         }
 
+        private bool _internalDeleteOnCollide;
+
         /// <summary>
         /// Applies the damage when our projectile collides with its victim
         /// </summary>
@@ -74,12 +76,12 @@ namespace Content.Server.GameObjects.Components.Projectiles
             // This is so entities that shouldn't get a collision are ignored.
             if (entity.TryGetComponent(out IPhysicsComponent otherPhysics) && otherPhysics.Hard == false)
             {
-                _deleteOnCollide = false;
+                _internalDeleteOnCollide = false;
                 return;
             }
             else
             {
-                _deleteOnCollide = true;
+                _internalDeleteOnCollide = true;
             }
 
             if (_soundHitSpecies != null && entity.HasComponent<IDamageableComponent>())
@@ -112,7 +114,7 @@ namespace Content.Server.GameObjects.Components.Projectiles
 
         void ICollideBehavior.PostCollide(int collideCount)
         {
-            if (collideCount > 0 && DeleteOnCollide) Owner.Delete();
+            if (collideCount > 0 && DeleteOnCollide && _internalDeleteOnCollide) Owner.Delete();
         }
 
         public override ComponentState GetComponentState()

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

@@ -0,0 +1,29 @@
+#nullable enable
+using System;
+using Content.Shared.Physics;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Maths;
+using Robust.Shared.Physics;
+
+namespace Content.Server.GameObjects.Components.Singularity
+{
+    [RegisterComponent]
+    public class ContainmentFieldComponent : Component, ICollideBehavior
+    {
+        public override string Name => "ContainmentField";
+        public ContainmentFieldConnection? Parent;
+
+        public void CollideWith(IEntity collidedWith)
+        {
+            if (Parent == null)
+            {
+                Owner.Delete();
+                return;
+            }
+
+            Parent.TryRepell(Owner, collidedWith);
+        }
+    }
+}

Content.Server/GameObjects/Components/Singularity/ContainmentFieldConnection.cs

@@ -0,0 +1,145 @@
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using Content.Shared.Physics;
+using Robust.Shared.GameObjects.Components;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Log;
+using Robust.Shared.Maths;
+using Timer = Robust.Shared.Timers.Timer;
+
+namespace Content.Server.GameObjects.Components.Singularity
+{
+    public class ContainmentFieldConnection : IDisposable
+    {
+        public readonly ContainmentFieldGeneratorComponent Generator1;
+        public readonly ContainmentFieldGeneratorComponent Generator2;
+        private List<IEntity> _fields = new List<IEntity>();
+        private int _sharedEnergyPool;
+        private CancellationTokenSource _powerDecreaseCancellationTokenSource = new CancellationTokenSource();
+        public int SharedEnergyPool
+        {
+            get => _sharedEnergyPool;
+            set
+            {
+                _sharedEnergyPool = Math.Clamp(value, 0, 10);
+                if (_sharedEnergyPool == 0)
+                {
+                    Dispose();
+                }
+            }
+        }
+
+        public ContainmentFieldConnection(ContainmentFieldGeneratorComponent generator1, ContainmentFieldGeneratorComponent generator2)
+        {
+            Generator1 = generator1;
+            Generator2 = generator2;
+
+            //generateFields
+            var pos1 = generator1.Owner.Transform.Coordinates;
+            var pos2 = generator2.Owner.Transform.Coordinates;
+            if (pos1 == pos2)
+            {
+                Dispose();
+                return;
+            }
+
+            var entityManager = IoCManager.Resolve<IEntityManager>();
+
+            var delta = (pos2 - pos1).Position;
+            var dirVec = delta.Normalized;
+            var stopDist = delta.Length;
+            var currentOffset = dirVec;
+            while (currentOffset.Length < stopDist)
+            {
+                var currentCoords = pos1.Offset(currentOffset);
+                var newEnt = entityManager.SpawnEntity("ContainmentField", currentCoords);
+                if (!newEnt.TryGetComponent<ContainmentFieldComponent>(out var containmentFieldComponent))
+                {
+                    Logger.Error("While creating Fields in ContainmentFieldConnection, a ContainmentField without a ContainmentFieldComponent was created. Deleting newly spawned ContainmentField...");
+                    newEnt.Delete();
+                    continue;
+                }
+
+                containmentFieldComponent.Parent = this;
+                newEnt.Transform.WorldRotation = dirVec.ToAngle();
+
+                _fields.Add(newEnt);
+                currentOffset += dirVec;
+            }
+
+
+            Timer.SpawnRepeating(1000, () => { SharedEnergyPool--;}, _powerDecreaseCancellationTokenSource.Token);
+        }
+
+        public bool CanRepell(IEntity toRepell)
+        {
+            var powerNeeded = 1;
+            if (toRepell.TryGetComponent<SingularityComponent>(out var singularityComponent))
+            {
+                powerNeeded += 2*singularityComponent.Level;
+            }
+
+            return _sharedEnergyPool > powerNeeded;
+        }
+
+        /// <summary>
+        /// Tries to repell a Entity. This deletes the connection if the repelling fails!
+        /// </summary>
+        /// <param name="repellFrom">Entity to repell from. Should be a field, otherwise return will be false.</param>
+        /// <param name="toRepell">Entity to repell.</param>
+        public void TryRepell(IEntity repellFrom, IEntity toRepell)
+        {
+            if (!_fields.Contains(repellFrom) || !toRepell.TryGetComponent<IPhysicsComponent>(out var collidableComponent)) return;
+
+            var speed = 5;
+            var containmentFieldRepellController = collidableComponent.EnsureController<ContainmentFieldRepellController>();
+
+            if (!CanRepell(toRepell))
+            {
+                Dispose();
+                return;
+            }
+
+            if (Math.Abs(repellFrom.Transform.WorldRotation.Degrees + 90f) < 0.1f ||
+                Math.Abs(repellFrom.Transform.WorldRotation.Degrees - 90f) < 0.1f)
+            {
+                if (repellFrom.Transform.WorldPosition.X.CompareTo(toRepell.Transform.WorldPosition.X) > 0)
+                {
+                    containmentFieldRepellController.Repell(Direction.West, speed);
+                }
+                else
+                {
+                    containmentFieldRepellController.Repell(Direction.East, speed);
+                }
+            }
+            else
+            {
+                if (repellFrom.Transform.WorldPosition.Y.CompareTo(toRepell.Transform.WorldPosition.Y) > 0)
+                {
+                    containmentFieldRepellController.Repell(Direction.South, speed);
+                }
+                else
+                {
+                    containmentFieldRepellController.Repell(Direction.North, speed);
+                }
+            }
+
+            return;
+        }
+
+        public void Dispose()
+        {
+            _powerDecreaseCancellationTokenSource.Cancel();
+            foreach (var field in _fields)
+            {
+                field.Delete();
+            }
+            _fields.Clear();
+
+            Generator1.RemoveConnection(this);
+            Generator2.RemoveConnection(this);
+        }
+    }
+}

Content.Server/GameObjects/Components/Singularity/ContainmentFieldGeneratorComponent.cs

@@ -0,0 +1,206 @@
+#nullable enable
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
+using Content.Server.GameObjects.Components.Projectiles;
+using Content.Server.Utility;
+using Content.Shared.GameObjects.EntitySystems;
+using Content.Shared.Physics;
+using JetBrains.Annotations;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Interfaces.Physics;
+using Robust.Shared.IoC;
+using Robust.Shared.Localization;
+using Robust.Shared.Log;
+using Robust.Shared.Map;
+using Robust.Shared.Maths;
+using Robust.Shared.Physics;
+using Robust.Shared.Utility;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Server.GameObjects.Components.Singularity
+{
+    [RegisterComponent]
+    public class ContainmentFieldGeneratorComponent : Component, ICollideBehavior
+    {
+        [Dependency] private IPhysicsManager _physicsManager = null!;
+        [Dependency] private IEntityManager _entityManager = null!;
+
+        public override string Name => "ContainmentFieldGenerator";
+
+        private int _powerBuffer;
+
+        [ViewVariables]
+        public int PowerBuffer
+        {
+            get => _powerBuffer;
+            set => _powerBuffer = Math.Clamp(value, 0, 6);
+        }
+
+        public void ReceivePower(int power)
+        {
+            var totalPower = power + PowerBuffer;
+            var powerPerConnection = totalPower  / 2;
+            var newBuffer = totalPower % 2;
+            TryPowerConnection(ref _connection1, ref newBuffer, powerPerConnection);
+            TryPowerConnection(ref _connection2, ref newBuffer, powerPerConnection);
+
+            PowerBuffer = newBuffer;
+        }
+
+        private void TryPowerConnection(ref Tuple<Direction, ContainmentFieldConnection>? connectionProperty, ref int powerBuffer, int powerPerConnection)
+        {
+            if (connectionProperty != null)
+            {
+                connectionProperty.Item2.SharedEnergyPool += powerPerConnection;
+            }
+            else
+            {
+                if (TryGenerateFieldConnection(ref connectionProperty))
+                {
+                    connectionProperty.Item2.SharedEnergyPool += powerPerConnection;
+                }
+                else
+                {
+                    powerBuffer += powerPerConnection;
+                }
+            }
+        }
+
+        private PhysicsComponent? _collidableComponent;
+
+        private Tuple<Direction, ContainmentFieldConnection>? _connection1;
+        private Tuple<Direction, ContainmentFieldConnection>? _connection2;
+
+        public bool CanRepell(IEntity toRepell) => _connection1?.Item2?.CanRepell(toRepell) == true ||
+                                                   _connection2?.Item2?.CanRepell(toRepell) == true;
+
+        public override void Initialize()
+        {
+            base.Initialize();
+            if (!Owner.TryGetComponent(out _collidableComponent))
+            {
+                Logger.Error("ContainmentFieldGeneratorComponent created with no CollidableComponent");
+                return;
+            }
+            _collidableComponent.AnchoredChanged += OnAnchoredChanged;
+        }
+
+
+        private void OnAnchoredChanged()
+        {
+            if(_collidableComponent?.Anchored == true)
+            {
+                Owner.SnapToGrid();
+            }
+            else
+            {
+                _connection1?.Item2.Dispose();
+                _connection2?.Item2.Dispose();
+            }
+        }
+
+        private bool IsConnectedWith(ContainmentFieldGeneratorComponent comp)
+        {
+
+            return comp == this || _connection1?.Item2.Generator1 == comp || _connection1?.Item2.Generator2 == comp ||
+                   _connection2?.Item2.Generator1 == comp || _connection2?.Item2.Generator2 == comp;
+        }
+
+        public bool HasFreeConnections()
+        {
+            return _connection1 == null || _connection2 == null;
+        }
+
+        private bool TryGenerateFieldConnection([NotNullWhen(true)] ref Tuple<Direction, ContainmentFieldConnection>? propertyFieldTuple)
+        {
+            if (propertyFieldTuple != null) return false;
+            if(_collidableComponent?.Anchored == false) return false;
+
+            foreach (var direction in new[] {Direction.North, Direction.East, Direction.South, Direction.West})
+            {
+                if (_connection1?.Item1 == direction || _connection2?.Item1 == direction) continue;
+
+                var dirVec = direction.ToVec();
+                var ray = new CollisionRay(Owner.Transform.WorldPosition, dirVec, (int) CollisionGroup.MobMask);
+                var rawRayCastResults = _physicsManager.IntersectRay(Owner.Transform.MapID, ray, 4.5f, Owner, false);
+
+                var rayCastResults = rawRayCastResults as RayCastResults[] ?? rawRayCastResults.ToArray();
+                if(!rayCastResults.Any()) continue;
+
+                RayCastResults? closestResult = null;
+                var smallestDist = 4.5f;
+                foreach (var res in rayCastResults)
+                {
+                    if (res.Distance > smallestDist) continue;
+
+                    smallestDist = res.Distance;
+                    closestResult = res;
+                }
+                if(closestResult == null) continue;
+                var ent = closestResult.Value.HitEntity;
+                if (!ent.TryGetComponent<ContainmentFieldGeneratorComponent>(out var fieldGeneratorComponent) ||
+                    fieldGeneratorComponent.Owner == Owner ||
+                    !fieldGeneratorComponent.HasFreeConnections() ||
+                    IsConnectedWith(fieldGeneratorComponent) ||
+                    !ent.TryGetComponent<PhysicsComponent>(out var collidableComponent) ||
+                    !collidableComponent.Anchored)
+                {
+                    continue;
+                }
+
+                var connection = new ContainmentFieldConnection(this, fieldGeneratorComponent);
+                propertyFieldTuple = new Tuple<Direction, ContainmentFieldConnection>(direction, connection);
+                if (fieldGeneratorComponent._connection1 == null)
+                {
+                    fieldGeneratorComponent._connection1 = new Tuple<Direction, ContainmentFieldConnection>(direction.GetOpposite(), connection);
+                }
+                else if (fieldGeneratorComponent._connection2 == null)
+                {
+                    fieldGeneratorComponent._connection2 = new Tuple<Direction, ContainmentFieldConnection>(direction.GetOpposite(), connection);
+                }
+                else
+                {
+                    Logger.Error("When trying to connect two Containmentfieldgenerators, the second one already had two connection but the check didn't catch it");
+                }
+
+                return true;
+            }
+
+            return false;
+        }
+
+        public void RemoveConnection(ContainmentFieldConnection? connection)
+        {
+            if (_connection1?.Item2 == connection)
+            {
+                _connection1 = null;
+            }else if (_connection2?.Item2 == connection)
+            {
+                _connection2 = null;
+            }
+            else if(connection != null)
+            {
+                Logger.Error("RemoveConnection called on Containmentfieldgenerator with a connection that can't be found in its connections.");
+            }
+        }
+
+        public void CollideWith(IEntity collidedWith)
+        {
+            if(collidedWith.HasComponent<EmitterBoltComponent>())
+            {
+                ReceivePower(4);
+            }
+        }
+
+        public override void OnRemove()
+        {
+            _connection1?.Item2.Dispose();
+            _connection2?.Item2.Dispose();
+            base.OnRemove();
+        }
+    }
+}

Content.Server/GameObjects/Components/Singularity/EmitterComponent.cs

@@ -0,0 +1,309 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Content.Server.GameObjects.Components.Access;
+using Content.Server.GameObjects.Components.Power.PowerNetComponents;
+using Content.Server.GameObjects.Components.Projectiles;
+using Content.Server.Interfaces;
+using Content.Server.Utility;
+using Content.Shared.GameObjects.Components.Singularity;
+using Content.Shared.Interfaces;
+using Content.Shared.Interfaces.GameObjects.Components;
+using Content.Shared.Physics;
+using Robust.Server.GameObjects;
+using Robust.Server.GameObjects.EntitySystems;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.ComponentDependencies;
+using Robust.Shared.GameObjects.Components;
+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.Log;
+using Robust.Shared.Random;
+using Robust.Shared.Serialization;
+using Robust.Shared.Utility;
+using Robust.Shared.ViewVariables;
+using Timer = Robust.Shared.Timers.Timer;
+
+#nullable enable
+
+namespace Content.Server.GameObjects.Components.Singularity
+{
+    [RegisterComponent]
+    [ComponentReference(typeof(IActivate))]
+    public class EmitterComponent : Component, IActivate, IInteractUsing
+    {
+        [Dependency] private readonly IEntityManager _entityManager = default!;
+        [Dependency] private readonly IRobustRandom _robustRandom = default!;
+
+        [ComponentDependency] private AppearanceComponent? _appearance;
+        [ComponentDependency] private AccessReader? _accessReader;
+
+        public override string Name => "Emitter";
+
+        private CancellationTokenSource? _timerCancel;
+
+        private PhysicsComponent _collidableComponent = default!;
+        private PowerConsumerComponent _powerConsumer = default!;
+
+        // whether the power switch is in "on"
+        [ViewVariables] private bool _isOn;
+        // Whether the power switch is on AND the machine has enough power (so is actively firing)
+        [ViewVariables] private bool _isPowered;
+        [ViewVariables] private bool _isLocked;
+
+        [ViewVariables(VVAccess.ReadWrite)] private int _fireShotCounter;
+
+        [ViewVariables(VVAccess.ReadWrite)] private string _fireSound = default!;
+        [ViewVariables(VVAccess.ReadWrite)] private string _boltType = default!;
+        [ViewVariables(VVAccess.ReadWrite)] private int _powerUseActive;
+        [ViewVariables(VVAccess.ReadWrite)] private int _fireBurstSize;
+        [ViewVariables(VVAccess.ReadWrite)] private TimeSpan _fireInterval;
+        [ViewVariables(VVAccess.ReadWrite)] private TimeSpan _fireBurstDelayMin;
+        [ViewVariables(VVAccess.ReadWrite)] private TimeSpan _fireBurstDelayMax;
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            serializer.DataField(ref _fireBurstDelayMin, "fireBurstDelayMin", TimeSpan.FromSeconds(2));
+            serializer.DataField(ref _fireBurstDelayMax, "fireBurstDelayMax", TimeSpan.FromSeconds(10));
+            serializer.DataField(ref _fireInterval, "fireInterval", TimeSpan.FromSeconds(2));
+            serializer.DataField(ref _fireBurstSize, "fireBurstSize", 3);
+            serializer.DataField(ref _powerUseActive, "powerUseActive", 500);
+            serializer.DataField(ref _boltType, "boltType", "EmitterBolt");
+            serializer.DataField(ref _fireSound, "fireSound", "/Audio/Weapons/emitter.ogg");
+        }
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            if (!Owner.TryGetComponent(out _collidableComponent!))
+            {
+                Logger.Error($"EmitterComponent {Owner} created with no CollidableComponent");
+                return;
+            }
+
+            if (!Owner.TryGetComponent(out _powerConsumer!))
+            {
+                Logger.Error($"EmitterComponent {Owner} created with no PowerConsumerComponent");
+                return;
+            }
+
+            _collidableComponent.AnchoredChanged += OnAnchoredChanged;
+            _powerConsumer.OnReceivedPowerChanged += OnReceivedPowerChanged;
+        }
+
+        private void OnReceivedPowerChanged(object? sender, ReceivedPowerChangedEventArgs e)
+        {
+            if (!_isOn)
+            {
+                return;
+            }
+
+            if (e.ReceivedPower < e.DrawRate)
+            {
+                PowerOff();
+            }
+            else
+            {
+                PowerOn();
+            }
+        }
+
+        private void OnAnchoredChanged()
+        {
+            if (_collidableComponent.Anchored)
+                Owner.SnapToGrid();
+        }
+
+        void IActivate.Activate(ActivateEventArgs eventArgs)
+        {
+            if (_isLocked)
+            {
+                Owner.PopupMessage(eventArgs.User, Loc.GetString("{0:TheName} is access locked!", Owner));
+                return;
+            }
+
+            if (!_isOn)
+            {
+                SwitchOn();
+                Owner.PopupMessage(eventArgs.User, Loc.GetString("{0:TheName} turns on.", Owner));
+            }
+            else
+            {
+                SwitchOff();
+                Owner.PopupMessage(eventArgs.User, Loc.GetString("{0:TheName} turns off.", Owner));
+            }
+        }
+
+        Task<bool> IInteractUsing.InteractUsing(InteractUsingEventArgs eventArgs)
+        {
+            if (_accessReader == null || !eventArgs.Using.TryGetComponent(out IAccess? access))
+            {
+                return Task.FromResult(false);
+            }
+
+            if (_accessReader.IsAllowed(access))
+            {
+                _isLocked ^= true;
+
+                if (_isLocked)
+                {
+                    Owner.PopupMessage(eventArgs.User, Loc.GetString("You lock {0:TheName}.", Owner));
+                }
+                else
+                {
+                    Owner.PopupMessage(eventArgs.User, Loc.GetString("You unlock {0:TheName}.", Owner));
+                }
+
+                UpdateAppearance();
+            }
+            else
+            {
+                Owner.PopupMessage(eventArgs.User, Loc.GetString("Access denied."));
+            }
+
+            return Task.FromResult(true);
+        }
+
+        private void SwitchOff()
+        {
+            _isOn = false;
+            _powerConsumer.DrawRate = 0;
+            PowerOff();
+            UpdateAppearance();
+        }
+
+        private void SwitchOn()
+        {
+            _isOn = true;
+            _powerConsumer.DrawRate = _powerUseActive;
+            // Do not directly PowerOn().
+            // OnReceivedPowerChanged will get fired due to DrawRate change which will turn it on.
+            UpdateAppearance();
+        }
+
+        private void PowerOff()
+        {
+            if (!_isPowered)
+            {
+                return;
+            }
+
+            _isPowered = false;
+
+            // Must be set while emitter powered.
+            DebugTools.AssertNotNull(_timerCancel);
+            _timerCancel!.Cancel();
+
+            UpdateAppearance();
+        }
+
+        private void PowerOn()
+        {
+            if (_isPowered)
+            {
+                return;
+            }
+
+            _isPowered = true;
+
+            _fireShotCounter = 0;
+            _timerCancel = new CancellationTokenSource();
+
+            Timer.Spawn(_fireBurstDelayMax, ShotTimerCallback, _timerCancel.Token);
+
+            UpdateAppearance();
+        }
+
+        private void ShotTimerCallback()
+        {
+            // Any power-off condition should result in the timer for this method being cancelled
+            // and thus not firing
+            DebugTools.Assert(_isPowered);
+            DebugTools.Assert(_isOn);
+            DebugTools.Assert(_powerConsumer.DrawRate <= _powerConsumer.ReceivedPower);
+
+            Fire();
+
+            TimeSpan delay;
+            if (_fireShotCounter < _fireBurstSize)
+            {
+                _fireShotCounter += 1;
+                delay = _fireInterval;
+            }
+            else
+            {
+                _fireShotCounter = 0;
+                var diff = _fireBurstDelayMax - _fireBurstDelayMin;
+                // TIL you can do TimeSpan * double.
+                delay = _fireBurstDelayMin + _robustRandom.NextFloat() * diff;
+            }
+
+            // Must be set while emitter powered.
+            DebugTools.AssertNotNull(_timerCancel);
+            Timer.Spawn(delay, ShotTimerCallback, _timerCancel!.Token);
+        }
+
+        private void Fire()
+        {
+            var projectile = _entityManager.SpawnEntity(_boltType, Owner.Transform.Coordinates);
+
+            if (!projectile.TryGetComponent<PhysicsComponent>(out var physicsComponent))
+            {
+                Logger.Error("Emitter tried firing a bolt, but it was spawned without a CollidableComponent");
+                return;
+            }
+
+            physicsComponent.Status = BodyStatus.InAir;
+
+            if (!projectile.TryGetComponent<ProjectileComponent>(out var projectileComponent))
+            {
+                Logger.Error("Emitter tried firing a bolt, but it was spawned without a ProjectileComponent");
+                return;
+            }
+
+            projectileComponent.IgnoreEntity(Owner);
+
+            physicsComponent
+                .EnsureController<BulletController>()
+                .LinearVelocity = Owner.Transform.WorldRotation.ToVec() * 20f;
+
+            projectile.Transform.LocalRotation = Owner.Transform.WorldRotation;
+
+            // TODO: Move to projectile's code.
+            Timer.Spawn(3000, () => projectile.Delete());
+
+            EntitySystem.Get<AudioSystem>().PlayFromEntity(_fireSound, Owner);
+        }
+
+        private void UpdateAppearance()
+        {
+            if (_appearance == null)
+            {
+                return;
+            }
+
+            EmitterVisualState state;
+            if (_isPowered)
+            {
+                state = EmitterVisualState.On;
+            }
+            else if (_isOn)
+            {
+                state = EmitterVisualState.Underpowered;
+            }
+            else
+            {
+                state = EmitterVisualState.Off;
+            }
+
+            _appearance.SetData(EmitterVisuals.VisualState, state);
+            _appearance.SetData(EmitterVisuals.Locked, _isLocked);
+        }
+    }
+}

Content.Server/GameObjects/Components/Singularity/SingularityComponent.cs

@@ -0,0 +1,227 @@
+#nullable enable
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Content.Server.GameObjects.Components.StationEvents;
+using Content.Shared.GameObjects;
+using Content.Shared.GameObjects.EntitySystemMessages;
+using Content.Shared.Physics;
+using Robust.Server.GameObjects;
+using Robust.Server.GameObjects.EntitySystems;
+using Robust.Shared.Audio;
+using Robust.Shared.Containers;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components;
+using Robust.Shared.GameObjects.Components.Map;
+using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Interfaces.Map;
+using Robust.Shared.Interfaces.Random;
+using Robust.Shared.IoC;
+using Robust.Shared.Log;
+using Robust.Shared.Maths;
+using Robust.Shared.Map;
+using Robust.Shared.Physics;
+using Robust.Shared.Timers;
+
+namespace Content.Server.GameObjects.Components.Singularity
+{
+    [RegisterComponent]
+    public class SingularityComponent : Component, ICollideBehavior
+    {
+        [Dependency] private IEntityManager _entityManager = null!;
+        [Dependency] private IMapManager _mapManager = null!;
+        [Dependency] private IRobustRandom _random = null!;
+
+
+        public override uint? NetID => ContentNetIDs.SINGULARITY;
+
+        public override string Name => "Singularity";
+
+        public int Energy
+        {
+            get => _energy;
+            set
+            {
+                if (value == _energy) return;
+
+                _energy = value;
+                if (_energy <= 0)
+                {
+                    if(_singularityController != null) _singularityController.LinearVelocity = Vector2.Zero;
+                    _spriteComponent?.LayerSetVisible(0, false);
+
+                    Owner.Delete();
+                    return;
+                }
+
+                Level = _energy switch
+                {
+                    var n when n >= 1500 => 6,
+                    var n when n >= 1000 => 5,
+                    var n when n >= 600 => 4,
+                    var n when n >= 300 => 3,
+                    var n when n >= 200 => 2,
+                    var n when n <  200 => 1,
+                    _ => 1
+                };
+            }
+        }
+        private int _energy = 180;
+
+        public int Level
+        {
+            get => _level;
+            set
+            {
+                if (value == _level) return;
+                if (value < 0) value = 0;
+                if (value > 6) value = 6;
+
+                _level = value;
+
+                if(_radiationPulseComponent != null) _radiationPulseComponent.RadsPerSecond = 10 * value;
+
+                _spriteComponent?.LayerSetRSI(0, "Effects/Singularity/singularity_" + _level + ".rsi");
+                _spriteComponent?.LayerSetState(0, "singularity_" + _level);
+
+                if(_collidableComponent != null && _collidableComponent.PhysicsShapes.Any() && _collidableComponent.PhysicsShapes[0] is PhysShapeCircle circle)
+                {
+                    circle.Radius = _level - 0.5f;
+                }
+            }
+        }
+        private int _level;
+
+        public int EnergyDrain =>
+            Level switch
+            {
+                6 => 20,
+                5 => 15,
+                4 => 10,
+                3 => 5,
+                2 => 2,
+                1 => 1,
+                _ => 0
+            };
+
+        private SingularityController? _singularityController;
+        private PhysicsComponent? _collidableComponent;
+        private SpriteComponent? _spriteComponent;
+        private RadiationPulseComponent? _radiationPulseComponent;
+        private AudioSystem _audioSystem = null!;
+        private AudioSystem.AudioSourceServer? _playingSound;
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            _audioSystem = EntitySystem.Get<AudioSystem>();
+            var audioParams = AudioParams.Default;
+            audioParams.Loop = true;
+            audioParams.MaxDistance = 20f;
+            audioParams.Volume = 5;
+            _audioSystem.PlayFromEntity("/Audio/Effects/singularity_form.ogg", Owner);
+            Timer.Spawn(5200,() => _playingSound = _audioSystem.PlayFromEntity("/Audio/Effects/singularity.ogg", Owner, audioParams));
+
+
+            if (!Owner.TryGetComponent(out _collidableComponent))
+            {
+                Logger.Error("SingularityComponent was spawned without CollidableComponent");
+            }
+            else
+            {
+                _collidableComponent.Hard = false;
+            }
+
+            if (!Owner.TryGetComponent(out _spriteComponent))
+            {
+                Logger.Error("SingularityComponent was spawned without SpriteComponent");
+            }
+
+            _singularityController = _collidableComponent?.EnsureController<SingularityController>();
+            if(_singularityController!=null)_singularityController.ControlledComponent = _collidableComponent;
+
+            if (!Owner.TryGetComponent(out _radiationPulseComponent))
+            {
+                Logger.Error("SingularityComponent was spawned without RadiationPulseComponent");
+            }
+
+            Level = 1;
+        }
+
+        public void Update()
+        {
+            Energy -= EnergyDrain;
+
+            if(Level == 1) return;
+            //pushing
+            var pushVector = new Vector2((_random.Next(-10, 10)), _random.Next(-10, 10));
+            while (pushVector.X == 0 && pushVector.Y == 0)
+            {
+                pushVector = new Vector2((_random.Next(-10, 10)), _random.Next(-10, 10));
+            }
+            _singularityController?.Push(pushVector.Normalized, 2);
+        }
+
+        List<IEntity> _previousPulledEntites = new List<IEntity>();
+        public void PullUpdate()
+        {
+            foreach (var previousPulledEntity in _previousPulledEntites)
+            {
+                if(previousPulledEntity.Deleted) continue;
+                if (!previousPulledEntity.TryGetComponent<PhysicsComponent>(out var collidableComponent)) continue;
+                var controller = collidableComponent.EnsureController<SingularityPullController>();
+                controller.StopPull();
+            }
+            _previousPulledEntites.Clear();
+
+            var entitiesToPull = _entityManager.GetEntitiesInRange(Owner.Transform.Coordinates, Level * 10);
+            foreach (var entity in entitiesToPull)
+            {
+                if (!entity.TryGetComponent<PhysicsComponent>(out var collidableComponent)) continue;
+                var controller = collidableComponent.EnsureController<SingularityPullController>();
+                if(Owner.Transform.Coordinates.EntityId != entity.Transform.Coordinates.EntityId) continue;
+                var vec = (Owner.Transform.Coordinates - entity.Transform.Coordinates).Position;
+                if (vec == Vector2.Zero) continue;
+
+                var speed = 10 / vec.Length * Level;
+
+                controller.Pull(vec.Normalized, speed);
+                _previousPulledEntites.Add(entity);
+            }
+        }
+
+        void ICollideBehavior.CollideWith(IEntity entity)
+        {
+            if (_collidableComponent == null) return; //how did it even collide then? :D
+
+            if (entity.TryGetComponent<IMapGridComponent>(out var mapGridComponent))
+            {
+                foreach (var tile in mapGridComponent.Grid.GetTilesIntersecting(((IPhysBody) _collidableComponent).WorldAABB))
+                {
+                    mapGridComponent.Grid.SetTile(tile.GridIndices, Tile.Empty);
+                    Energy++;
+                }
+                return;
+            }
+
+            if (entity.HasComponent<ContainmentFieldComponent>() || (entity.TryGetComponent<ContainmentFieldGeneratorComponent>(out var component) && component.CanRepell(Owner)))
+            {
+                return;
+            }
+
+            if (ContainerHelpers.IsInContainer(entity)) return;
+
+            entity.Delete();
+            Energy++;
+        }
+
+        public override void OnRemove()
+        {
+            _playingSound?.Stop();
+            _audioSystem.PlayAtCoords("/Audio/Effects/singularity_collapse.ogg", Owner.Transform.Coordinates);
+            base.OnRemove();
+        }
+    }
+}

Content.Server/GameObjects/Components/Singularity/SingularityGenerator.cs

@@ -0,0 +1,31 @@
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.IoC;
+
+namespace Content.Server.GameObjects.Components.Singularity
+{
+    [RegisterComponent]
+    public class SingularityGeneratorComponent : Component
+    {
+        public override string Name => "SingularityGenerator";
+
+        private int _power;
+
+        public int Power
+        {
+            get => _power;
+            set
+            {
+                if(_power == value) return;
+
+                _power = value;
+                if (_power > 15)
+                {
+                    var entityManager = IoCManager.Resolve<IEntityManager>();
+                    entityManager.SpawnEntity("Singularity", Owner.Transform.Coordinates);
+                    //dont delete ourselves, just wait to get eaten
+                }
+            }
+        }
+    }
+}

Content.Server/GameObjects/Components/WiresComponent.cs

@@ -373,6 +373,14 @@ namespace Content.Server.GameObjects.Components
             UserInterface?.Open(session);
         }
 
+        /// <summary>
+        /// Closes all wire UIs.
+        /// </summary>
+        public void CloseAll()
+        {
+            UserInterface?.CloseAll();
+        }
+
         private void UserInterfaceOnReceiveMessage(ServerBoundUserInterfaceMessage serverMsg)
         {
             var message = serverMsg.Message;

Content.Server/GameObjects/EntitySystems/ParticleAcceleratorPartSystem.cs

@@ -0,0 +1,28 @@
+#nullable enable
+using Content.Server.GameObjects.Components.PA;
+using JetBrains.Annotations;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components.Transform;
+using Robust.Shared.GameObjects.Systems;
+
+namespace Content.Server.GameObjects.EntitySystems
+{
+    [UsedImplicitly]
+    public class ParticleAcceleratorPartSystem : EntitySystem
+    {
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            EntityManager.EventBus.SubscribeEvent<RotateEvent>(EventSource.Local, this, RotateEvent);
+        }
+
+        private static void RotateEvent(RotateEvent ev)
+        {
+            if (ev.Sender.TryGetComponent(out ParticleAcceleratorPartComponent? part))
+            {
+                part.Rotated();
+            }
+        }
+    }
+}

Content.Server/GameObjects/EntitySystems/SingularitySystem.cs

@@ -0,0 +1,41 @@
+using Content.Server.GameObjects.Components.Singularity;
+using Robust.Shared.GameObjects.Systems;
+
+namespace Content.Server.GameObjects.EntitySystems
+{
+    public class SingularitySystem : EntitySystem
+    {
+        private float curTimeSingulo;
+        private float curTimePull;
+        public override void Update(float frameTime)
+        {
+            base.Update(frameTime);
+
+            curTimeSingulo += frameTime;
+            curTimePull += frameTime;
+
+            var shouldUpdate = curTimeSingulo >= 1f;
+            var shouldPull = curTimePull >= 0.2f;
+            if (!shouldUpdate && !shouldPull) return;
+            var singulos = ComponentManager.EntityQuery<SingularityComponent>();
+
+            if (curTimeSingulo >= 1f)
+            {
+                curTimeSingulo -= 1f;
+                foreach (var singulo in singulos)
+                {
+                    singulo.Update();
+                }
+            }
+
+            if (curTimePull >= 0.5f)
+            {
+                curTimePull -= 0.5f;
+                foreach (var singulo in singulos)
+                {
+                    singulo.PullUpdate();
+                }
+            }
+        }
+    }
+}

Content.Shared/GameObjects/Components/Singularity/SharedEmitterComponent.cs

@@ -0,0 +1,20 @@
+using System;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.GameObjects.Components.Singularity
+{
+    [NetSerializable, Serializable]
+    public enum EmitterVisuals
+    {
+        VisualState,
+        Locked
+    }
+
+    [NetSerializable, Serializable]
+    public enum EmitterVisualState
+    {
+        On,
+        Underpowered,
+        Off
+    }
+}

Content.Shared/GameObjects/Components/Singularity/SharedParticleAcceleratorComponent.cs

@@ -0,0 +1,125 @@
+using System;
+using Robust.Shared.GameObjects.Components.UserInterface;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.GameObjects.Components
+{
+    [NetSerializable, Serializable]
+    public enum ParticleAcceleratorVisuals
+    {
+        VisualState
+    }
+
+    [NetSerializable, Serializable]
+    public enum ParticleAcceleratorVisualState
+    {
+        //Open, //no prefix
+        //Wired, //w prefix
+        Unpowered, //c prefix
+        Powered, //p prefix
+        Level0, //0 prefix
+        Level1, //1 prefix
+        Level2, //2 prefix
+        Level3 //3 prefix
+    }
+
+    [NetSerializable, Serializable]
+    public enum ParticleAcceleratorPowerState
+    {
+        Standby = ParticleAcceleratorVisualState.Powered,
+        Level0 = ParticleAcceleratorVisualState.Level0,
+        Level1 = ParticleAcceleratorVisualState.Level1,
+        Level2 = ParticleAcceleratorVisualState.Level2,
+        Level3 = ParticleAcceleratorVisualState.Level3
+    }
+
+    public enum ParticleAcceleratorVisualLayers
+    {
+        Base,
+        Unlit
+    }
+
+    [Serializable, NetSerializable]
+    public enum ParticleAcceleratorWireStatus
+    {
+        Power,
+        Keyboard,
+        Limiter,
+        Strength,
+    }
+
+    [NetSerializable, Serializable]
+    public class ParticleAcceleratorUIState : BoundUserInterfaceState
+    {
+        public bool Assembled;
+        public bool Enabled;
+        public ParticleAcceleratorPowerState State;
+        public int PowerDraw;
+        public int PowerReceive;
+
+        //dont need a bool for the controlbox because... this is sent to the controlbox :D
+        public bool EmitterLeftExists;
+        public bool EmitterCenterExists;
+        public bool EmitterRightExists;
+        public bool PowerBoxExists;
+        public bool FuelChamberExists;
+        public bool EndCapExists;
+
+        public bool InterfaceBlock;
+        public ParticleAcceleratorPowerState MaxLevel;
+        public bool WirePowerBlock;
+
+        public ParticleAcceleratorUIState(bool assembled, bool enabled, ParticleAcceleratorPowerState state, int powerReceive, int powerDraw, bool emitterLeftExists, bool emitterCenterExists, bool emitterRightExists, bool powerBoxExists, bool fuelChamberExists, bool endCapExists, bool interfaceBlock, ParticleAcceleratorPowerState maxLevel, bool wirePowerBlock)
+        {
+            Assembled = assembled;
+            Enabled = enabled;
+            State = state;
+            PowerDraw = powerDraw;
+            PowerReceive = powerReceive;
+            EmitterLeftExists = emitterLeftExists;
+            EmitterCenterExists = emitterCenterExists;
+            EmitterRightExists = emitterRightExists;
+            PowerBoxExists = powerBoxExists;
+            FuelChamberExists = fuelChamberExists;
+            EndCapExists = endCapExists;
+            InterfaceBlock = interfaceBlock;
+            MaxLevel = maxLevel;
+            WirePowerBlock = wirePowerBlock;
+        }
+    }
+
+    [NetSerializable, Serializable]
+    public class ParticleAcceleratorSetEnableMessage : BoundUserInterfaceMessage
+    {
+        public readonly bool Enabled;
+        public ParticleAcceleratorSetEnableMessage(bool enabled)
+        {
+            Enabled = enabled;
+        }
+    }
+
+    [NetSerializable, Serializable]
+    public class ParticleAcceleratorRescanPartsMessage : BoundUserInterfaceMessage
+    {
+        public ParticleAcceleratorRescanPartsMessage()
+        {
+        }
+    }
+
+    [NetSerializable, Serializable]
+    public class ParticleAcceleratorSetPowerStateMessage : BoundUserInterfaceMessage
+    {
+        public readonly ParticleAcceleratorPowerState State;
+
+        public ParticleAcceleratorSetPowerStateMessage(ParticleAcceleratorPowerState state)
+        {
+            State = state;
+        }
+    }
+
+    [NetSerializable, Serializable]
+    public enum ParticleAcceleratorControlBoxUiKey
+    {
+        Key
+    }
+}

Content.Shared/GameObjects/Components/Singularity/SharedRadiationCollectorComponent.cs

@@ -0,0 +1,20 @@
+using System;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.GameObjects.Components.Singularity
+{
+    [NetSerializable, Serializable]
+    public enum RadiationCollectorVisuals
+    {
+        VisualState
+    }
+
+    [NetSerializable, Serializable]
+    public enum RadiationCollectorVisualState
+    {
+        Active,
+        Activating,
+        Deactivating,
+        Deactive
+    }
+}

Content.Shared/GameObjects/ContentNetIDs.cs

@@ -83,7 +83,7 @@
         public const uint STORABLE = 1077;
         public const uint PULLABLE = 1078;
         public const uint GAS_TANK = 1079;
-
+        public const uint SINGULARITY = 1080;
 
         // Net IDs for integration tests.
         public const uint PREDICTION_TEST = 10001;

Content.Shared/GameObjects/EntitySystemMessages/SingularitySoundMessage.cs

@@ -0,0 +1,20 @@
+using System;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.GameObjects.EntitySystemMessages
+{
+    [Serializable, NetSerializable]
+    public class SingularitySoundMessage : ComponentMessage
+    {
+        public bool Start { get; }
+
+        public SingularitySoundMessage(bool start)
+        {
+            Directed = true;
+            Start = start;
+        }
+    }
+
+
+}

Content.Shared/Physics/CollisionGroup.cs

@@ -21,7 +21,8 @@ namespace Content.Shared.Physics
 		SmallImpassable = 1 <<  4, // 16 Things a smaller object - a cat, a crab - can't go through - a wall, but not a computer terminal or a table
         Clickable       = 1 <<  5, // 32 Temporary "dummy" layer to ensure that objects can still be clicked even if they don't collide with anything (you can't interact with objects that have no layer, including items)
         GhostImpassable = 1 <<  6, // 64 Things impassible by ghosts/observers, ie blessed tiles or forcefields
-
+        Underplating    = 1 <<  7, // 128 Things that are under plating
+        Passable        = 1 <<  8, // 256 Things that are passable
         MapGrid         = MapGridHelpers.CollisionGroup, // Map grids, like shuttles. This is the actual grid itself, not the walls or other entities connected to the grid.
 
         MobMask = Impassable | MobImpassable | VaultImpassable | SmallImpassable,

Content.Shared/Physics/ContainmentFieldCollisionController.cs

@@ -0,0 +1,9 @@
+using Robust.Shared.Physics;
+
+namespace Content.Shared.Physics
+{
+    public class ContainmentFieldCollisionController : VirtualController
+    {
+
+    }
+}

Content.Shared/Physics/ContainmentFieldRepellController.cs

@@ -0,0 +1,14 @@
+using System.Numerics;
+using Robust.Shared.Maths;
+using Robust.Shared.Physics;
+
+namespace Content.Shared.Physics
+{
+    public class ContainmentFieldRepellController : FrictionController
+    {
+        public void Repell(Direction dir, float speed)
+        {
+            LinearVelocity = dir.ToVec() * speed;
+        }
+    }
+}

Content.Shared/Physics/FrictionController.cs

@@ -0,0 +1,24 @@
+using System;
+using Robust.Shared.Interfaces.Physics;
+using Robust.Shared.IoC;
+using Robust.Shared.Physics;
+
+namespace Content.Shared.Physics
+{
+    public abstract class FrictionController : VirtualController
+    {
+        [Dependency] private IPhysicsManager _physicsManager = default!;
+
+        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.Shared/Physics/SingularityController.cs

@@ -0,0 +1,18 @@
+#nullable enable
+using Robust.Shared.GameObjects.Components;
+using Robust.Shared.Maths;
+using Robust.Shared.Physics;
+
+namespace Content.Shared.Physics
+{
+    public class SingularityController : VirtualController
+    {
+        public override IPhysicsComponent? ControlledComponent { protected get; set; }
+
+
+        public void Push(Vector2 velocityDirection, float speed)
+        {
+            LinearVelocity = velocityDirection * speed;
+        }
+    }
+}

Content.Shared/Physics/SingularityPullController.cs

@@ -0,0 +1,22 @@
+#nullable enable
+using Robust.Shared.GameObjects.Components;
+using Robust.Shared.Maths;
+using Robust.Shared.Physics;
+
+namespace Content.Server.GameObjects.Components.Singularity
+{
+    public class SingularityPullController : VirtualController
+    {
+        public override IPhysicsComponent? ControlledComponent { protected get; set; }
+
+        public void StopPull()
+        {
+            LinearVelocity = Vector2.Zero;
+        }
+
+        public void Pull(Vector2 velocityDirection, float speed)
+        {
+            LinearVelocity = velocityDirection * speed;
+        }
+    }
+}

Resources/Prototypes/Entities/Constructible/Furniture/beds.yml

@@ -10,7 +10,7 @@
     anchored: true
     shapes:
     - !type:PhysShapeAabb
-      bounds: "-0.5, -0.5, 0.3, 0.5"
+      bounds: "-0.45, -0.45, 0.05, 0.45"
       mask:
       - Impassable
       - MobImpassable

Resources/Prototypes/Entities/Constructible/Furniture/instruments.yml

@@ -11,6 +11,7 @@
    - type: Physics
      shapes:
        - !type:PhysShapeAabb
+         layer: [MobMask]
          mask:
            - Impassable
            - MobImpassable

Resources/Prototypes/Entities/Constructible/Furniture/potted_plants.yml

@@ -55,6 +55,11 @@
   components:
   - type: Sprite
     state: plant-25
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.47,-0.25,0.05,0.25"
+        layer: [ Passable ]
 
 - type: entity
   id: PottedPlantBioluminscent

Resources/Prototypes/Entities/Constructible/Furniture/seats.yml

@@ -27,6 +27,11 @@
   - type: Sprite
     state: chair
     color: "#8e9799"
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.45, -0.45, 0.05, 0.45"
+        layer: [ Passable ]
 
 - type: entity
   name: stool
@@ -37,6 +42,11 @@
   - type: Sprite
     state: stool_base
     color: "#8e9799"
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.5, -0.25, 0.05, 0.25"
+        layer: [ Passable ]
 
 - type: entity
   name: bar stool
@@ -46,6 +56,11 @@
   - type: Sprite
     state: bar_stool
     color: "white"
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.5, -0.2, 0.2, 0.25"
+        layer: [ Passable ]
 
 - type: entity
   name: white office chair
@@ -55,11 +70,16 @@
   - type: Rotatable
   - type: Sprite
     state: officechair_white
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.49, -0.25, 0.37, 0.25"
+        layer: [ Passable ]
 
 - type: entity
   name: dark office chair
   id: ChairOfficeDark
-  parent: SeatBase
+  parent: ChairOfficeLight
   components:
   - type: Sprite
     state: officechair_dark
@@ -72,6 +92,11 @@
   components:
   - type: Sprite
     state: comfychair_preview
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.45, -0.3, 0.35, 0.3"
+        layer: [ MobMask ]
 
 - type: entity
   name: wooden chair
@@ -81,3 +106,8 @@
   - type: Sprite
     state: wooden_chair
     color: "white"
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.37, -0.25, 0.49, 0.24"
+        layer: [ Passable ]

Resources/Prototypes/Entities/Constructible/Ground/catwalk.yml

@@ -6,6 +6,10 @@
   - type: Clickable
   - type: InteractionOutline
   - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.5,-0.5,0.5,0.5"
+        layer: [ Passable ]
   - type: Sprite
     netsync: false
     sprite: Constructible/Tiles/catwalk.rsi

Resources/Prototypes/Entities/Constructible/Power/particleAccelerator.yml

@@ -0,0 +1,348 @@
+- type: entity
+  id: ParticleAcceleratorBase
+  abstract: true
+  placement:
+    mode: SnapgridCenter
+  components:
+    - type: InteractionOutline
+    - type: Anchorable
+    - type: Physics
+      mass: 25
+      anchored: true
+      shapes:
+        - !type:PhysShapeAabb
+          bounds: "-0.49,-0.49,0.49,0.49"
+          layer:
+            - Opaque
+            - Impassable
+            - MobImpassable
+            - VaultImpassable
+      IsScrapingFloor: true
+    - type: SnapGrid
+      offset: Center
+    - type: Pullable
+    - type: Clickable
+
+- type: entity
+  name: Particles
+  description: "Accelerated particles."
+  id: ParticlesProjectile
+  parent: BulletBase
+  components:
+    - type: Sprite
+      sprite: Constructible/Power/PA/particle.rsi
+      state: particle0
+      shader: unshaded
+    - type: Projectile
+      delete_on_collide: false
+      soundHit: /Audio/Weapons/Guns/Hits/bullet_hit.ogg
+      damages:
+        Radiation: 10
+    - type: Physics
+      hard: false
+      shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.48,-0.48,0.48,0.48"
+        layer: [None]
+        mask:
+        - MobMask
+        - Clickable
+    - type: ParticleProjectile
+
+# Working PA
+
+- type: entity
+  parent: ParticleAcceleratorBase
+  id: ParticleAcceleratorControlBox
+  name: Particle Accelerator Control Computer
+  description: This controls the density of the particles.
+  components:
+    - type: Sprite
+      sprite: Constructible/Power/PA/control_box.rsi
+      layers:
+        - state: control_boxc
+          map: [ "enum.ParticleAcceleratorVisualLayers.Base" ]
+        - state: control_box_unlitp
+          map: [ "enum.ParticleAcceleratorVisualLayers.Unlit" ]
+          shader: unshaded
+          visible: false
+    - type: Appearance
+      visuals:
+        - type: ParticleAcceleratorPartVisualizer
+          baseState: control_box_unlit
+    - type: PowerReceiver
+    - type: ParticleAcceleratorControlBox
+    - type: Construction
+      graph: particleAcceleratorControlBox
+      node: completed
+    - type: UserInterface
+      interfaces:
+        - key: enum.ParticleAcceleratorControlBoxUiKey.Key
+          type: ParticleAcceleratorBoundUserInterface
+        - key: enum.WiresUiKey.Key
+          type: WiresBoundUserInterface
+    - type: Wires
+      BoardName: "Mk2 Particle Accelerator"
+      LayoutId: ParticleAccelerator
+
+- type: entity
+  parent: ParticleAcceleratorBase
+  id: ParticleAcceleratorEmitterLeft
+  name: EM Containment Grid
+  suffix: Left
+  description: This launchs the Alpha particles, might not want to stand near this end.
+  components:
+    - type: Sprite
+      sprite: Constructible/Power/PA/emitter_left.rsi
+      layers:
+        - state: emitter_leftc
+          map: [ "enum.ParticleAcceleratorVisualLayers.Base" ]
+        - state: emitter_left_unlitp
+          map: [ "enum.ParticleAcceleratorVisualLayers.Unlit" ]
+          shader: unshaded
+          visible: false
+    - type: Appearance
+      visuals:
+        - type: ParticleAcceleratorPartVisualizer
+          baseState: emitter_left_unlit
+    - type: ParticleAcceleratorEmitter
+      emitterType: Left
+    - type: Construction
+      graph: particleAcceleratorEmitterLeft
+      node: completed
+
+
+- type: entity
+  parent: ParticleAcceleratorBase
+  id: ParticleAcceleratorEmitterCenter
+  name: EM Containment Grid
+  suffix: Center
+  description: This launchs the Alpha particles, might not want to stand near this end.
+  components:
+    - type: Sprite
+      sprite: Constructible/Power/PA/emitter_center.rsi
+      layers:
+        - state: emitter_centerc
+          map: [ "enum.ParticleAcceleratorVisualLayers.Base" ]
+        - state: emitter_center_unlitp
+          map: [ "enum.ParticleAcceleratorVisualLayers.Unlit" ]
+          shader: unshaded
+          visible: false
+    - type: Appearance
+      visuals:
+        - type: ParticleAcceleratorPartVisualizer
+          baseState: emitter_center_unlit
+    - type: ParticleAcceleratorEmitter
+      emitterType: Center
+    - type: Construction
+      graph: particleAcceleratorEmitterCenter
+      node: completed
+
+- type: entity
+  parent: ParticleAcceleratorBase
+  id: ParticleAcceleratorEmitterRight
+  name: EM Containment Grid
+  suffix: Right
+  description: This launchs the Alpha particles, might not want to stand near this end.
+  components:
+    - type: Sprite
+      sprite: Constructible/Power/PA/emitter_right.rsi
+      layers:
+        - state: emitter_rightc
+          map: [ "enum.ParticleAcceleratorVisualLayers.Base" ]
+        - state: emitter_right_unlitp
+          map: [ "enum.ParticleAcceleratorVisualLayers.Unlit" ]
+          shader: unshaded
+          visible: false
+    - type: Appearance
+      visuals:
+        - type: ParticleAcceleratorPartVisualizer
+          baseState: emitter_right_unlit
+    - type: ParticleAcceleratorEmitter
+      emitterType: Right
+    - type: Construction
+      graph: particleAcceleratorEmitterRight
+      node: completed
+
+- type: entity
+  parent: ParticleAcceleratorBase
+  id: ParticleAcceleratorEndCap
+  name: Alpha Particle Generation Array
+  description: This is where Alpha particles are generated from [REDACTED].
+  components:
+    - type: Sprite
+      sprite: Constructible/Power/PA/end_cap.rsi
+      state: end_capc
+    - type: ParticleAcceleratorEndCap
+    - type: Construction
+      graph: particleAcceleratorEndCap
+      node: completed
+
+- type: entity
+  parent: ParticleAcceleratorBase
+  id: ParticleAcceleratorFuelChamber
+  name: EM Acceleration Chamber
+  description: This is where the Alpha particles are accelerated to radical speeds.
+  components:
+    - type: Sprite
+      sprite: Constructible/Power/PA/fuel_chamber.rsi
+      layers:
+        - state: fuel_chamberc
+          map: [ "enum.ParticleAcceleratorVisualLayers.Base" ]
+        - state: fuel_chamber_unlitp
+          map: [ "enum.ParticleAcceleratorVisualLayers.Unlit" ]
+          shader: unshaded
+          visible: false
+    - type: Appearance
+      visuals:
+        - type: ParticleAcceleratorPartVisualizer
+          baseState: fuel_chamber_unlit
+    - type: ParticleAcceleratorFuelChamber
+    - type: Construction
+      graph: particleAcceleratorFuelChamber
+      node: completed
+
+- type: entity
+  parent: ParticleAcceleratorBase
+  id: ParticleAcceleratorPowerBox
+  name: Particle Focusing EM Lens
+  description: This uses electromagnetic waves to focus the Alpha-Particles.
+  components:
+    - type: Sprite
+      sprite: Constructible/Power/PA/power_box.rsi
+      layers:
+        - state: power_boxc
+          map: [ "enum.ParticleAcceleratorVisualLayers.Base" ]
+        - state: power_box_unlitp
+          map: [ "enum.ParticleAcceleratorVisualLayers.Unlit" ]
+          shader: unshaded
+          visible: false
+    - type: Appearance
+      visuals:
+        - type: ParticleAcceleratorPartVisualizer
+          baseState: power_box_unlit
+    - type: ParticleAcceleratorPowerBox
+    - type: PowerConsumer
+      voltage: High
+    - type: NodeContainer
+      nodes:
+        - !type:AdjacentNode
+          nodeGroupID: HVPower
+    - type: Construction
+      graph: particleAcceleratorPowerBox
+      node: completed
+
+
+# Unfinished PA
+
+- type: entity
+  parent: ParticleAcceleratorBase
+  id: ParticleAcceleratorControlBoxUnfinished
+  name: Particle Accelerator Control Computer
+  suffix: Unfinished
+  description: This controls the density of the particles. It looks unfinished.
+  components:
+    - type: Physics
+      anchored: false
+    - type: Sprite
+      sprite: Constructible/Power/PA/control_box.rsi
+      state: control_box
+    - type: Construction
+      graph: particleAcceleratorControlBox
+      node: start
+
+- type: entity
+  parent: ParticleAcceleratorBase
+  id: ParticleAcceleratorEmitterLeftUnfinished
+  name: EM Containment Grid
+  suffix: Unfinished, Left
+  description: This launchs the Alpha particles, might not want to stand near this end. It looks unfinished.
+  components:
+    - type: Physics
+      anchored: false
+    - type: Sprite
+      sprite: Constructible/Power/PA/emitter_left.rsi
+      state: emitter_left
+    - type: Construction
+      graph: particleAcceleratorEmitterLeft
+      node: start
+
+- type: entity
+  parent: ParticleAcceleratorBase
+  id: ParticleAcceleratorEmitterCenterUnfinished
+  name: EM Containment Grid
+  suffix: Unfinished, Center
+  description: This launchs the Alpha particles, might not want to stand near this end. It looks unfinished.
+  components:
+    - type: Physics
+      anchored: false
+    - type: Sprite
+      sprite: Constructible/Power/PA/emitter_center.rsi
+      state: emitter_center
+    - type: Construction
+      graph: particleAcceleratorEmitterCenter
+      node: start
+
+- type: entity
+  parent: ParticleAcceleratorBase
+  id: ParticleAcceleratorEmitterRightUnfinished
+  name: EM Containment Grid
+  suffix: Unfinished, Right
+  description: This launchs the Alpha particles, might not want to stand near this end. It looks unfinished.
+  components:
+    - type: Physics
+      anchored: false
+    - type: Sprite
+      sprite: Constructible/Power/PA/emitter_right.rsi
+      state: emitter_right
+    - type: Construction
+      graph: particleAcceleratorEmitterRight
+      node: start
+
+- type: entity
+  parent: ParticleAcceleratorBase
+  id: ParticleAcceleratorEndCapUnfinished
+  name: Alpha Particle Generation Array
+  suffix: Unfinished
+  description: This is where Alpha particles are generated from [REDACTED]. It looks unfinished.
+  components:
+    - type: Physics
+      anchored: false
+    - type: Sprite
+      sprite: Constructible/Power/PA/end_cap.rsi
+      state: end_cap
+    - type: Construction
+      graph: particleAcceleratorEndCap
+      node: start
+
+- type: entity
+  parent: ParticleAcceleratorBase
+  id: ParticleAcceleratorFuelChamberUnfinished
+  name: EM Acceleration Chamber
+  suffix: Unfinished
+  description: This is where the Alpha particles are accelerated to radical speeds. It looks unfinished.
+  components:
+    - type: Physics
+      anchored: false
+    - type: Sprite
+      sprite: Constructible/Power/PA/fuel_chamber.rsi
+      state: fuel_chamber
+    - type: Construction
+      graph: particleAcceleratorFuelChamber
+      node: start
+
+- type: entity
+  parent: ParticleAcceleratorBase
+  id: ParticleAcceleratorPowerBoxUnfinished
+  name: Particle Focusing EM Lens
+  suffix: Unfinished
+  description: This uses electromagnetic waves to focus the Alpha-Particles. It looks unfinished.
+  components:
+    - type: Physics
+      anchored: false
+    - type: Sprite
+      sprite: Constructible/Power/PA/power_box.rsi
+      state: power_box
+    - type: Construction
+      graph: particleAcceleratorPowerBox
+      node: start

Resources/Prototypes/Entities/Constructible/Power/power_base.yml

@@ -153,8 +153,9 @@
   - type: InteractionOutline
   - type: Physics
     shapes:
-    - !type:PhysShapeAabb
+      - !type:PhysShapeAabb
-      bounds: "-0.25, -0.25, 0.25, 0.3"
+        bounds: "-0.25, -0.25, 0.25, 0.3"
+        layer: [ Passable ]
   - type: SnapGrid
     offset: Center
   - type: Sprite

Resources/Prototypes/Entities/Constructible/Power/research.yml

@@ -13,6 +13,7 @@
     anchored: true
     shapes:
     - !type:PhysShapeAabb
+      bounds: "-0.4, -0.45, 0.45, 0.45"
       mask:
       - Impassable
       - MobImpassable

Resources/Prototypes/Entities/Constructible/Power/wires.yml

@@ -6,8 +6,12 @@
     mode: SnapgridCenter
   components:
   - type: Clickable
-  - type: InteractionOutline
   - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.5, -0.5, 0.5, 0.5"
+        layer: [ Underplating ]
+  - type: InteractionOutline
   - type: SnapGrid
     offset: Center
   - type: Sprite

Resources/Prototypes/Entities/Constructible/Specific/conveyor.yml

@@ -12,6 +12,7 @@
     shapes:
     - !type:PhysShapeAabb
       bounds: "-0.49,-0.49,0.49,0.49"
+      layer: [Passable]
       mask:
       - Impassable
       - MobImpassable

Resources/Prototypes/Entities/Constructible/Specific/disposal.yml

@@ -35,7 +35,6 @@
     drawdepth: BelowFloor
     sprite: Constructible/Power/disposal.rsi
     state: conpipe-s
-
   - type: DisposalTransit
   - type: Appearance
     visuals:
@@ -43,6 +42,11 @@
       state_free: conpipe-s
       state_anchored: pipe-s
       state_broken: pipe-b
+  - type: Physics
+    shapes:
+    - !type:PhysShapeAabb
+      bounds: "-0.5,-0.25,0.5,0.25"
+      layer: [ Underplating ]
 
 - type: entity
   id: DisposalTagger
@@ -54,7 +58,6 @@
     drawdepth: BelowFloor
     sprite: Constructible/Power/disposal.rsi
     state: conpipe-tagger
-
   - type: DisposalTagger
   - type: Appearance
     visuals:
@@ -66,6 +69,11 @@
     interfaces:
     - key: enum.DisposalTaggerUiKey.Key
       type: DisposalTaggerBoundUserInterface
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.5,-0.25,0.5,0.25"
+        layer: [ Underplating ]
 
 - type: entity
   id: DisposalTrunk
@@ -77,7 +85,6 @@
     drawdepth: BelowFloor
     sprite: Constructible/Power/disposal.rsi
     state: conpipe-t
-
   - type: DisposalEntry
   - type: Appearance
     visuals:
@@ -85,6 +92,11 @@
       state_free: conpipe-t
       state_anchored: pipe-t
       state_broken: pipe-b
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.5,-0.25,0.4,0.25"
+        layer: [ Underplating ]
 
 - type: entity
   id: DisposalUnit
@@ -105,7 +117,6 @@
       map: ["enum.DisposalUnitVisualLayers.Handle"]
     - state: dispover-ready
       map: ["enum.DisposalUnitVisualLayers.Light"]
-
   - type: PowerReceiver
   - type: DisposalUnit
     flushTime: 2
@@ -115,7 +126,7 @@
     anchored: true
     shapes:
     - !type:PhysShapeAabb
-      bounds: "-0.35,-0.3,0.35,0.3"
+      bounds: "-0.3,-0.35,0.3,0.35"
       mask:
       - Impassable
       - MobImpassable
@@ -162,7 +173,6 @@
     drawdepth: BelowFloor
     sprite: Constructible/Power/disposal.rsi
     state: conpipe-j1s
-
   - type: DisposalRouter
     degrees:
     - 0
@@ -180,17 +190,21 @@
     interfaces:
     - key: enum.DisposalRouterUiKey.Key
       type: DisposalRouterBoundUserInterface
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.5,-0.5,0.5,0.25"
+        layer: [ Underplating ]
 
 - type: entity
   id: DisposalRouterFlipped
   parent: DisposalRouter
-  name: flipped router junction
+  suffix: flipped
   components:
   - type: Sprite
     drawdepth: BelowFloor
     sprite: Constructible/Power/disposal.rsi
     state: conpipe-j2s
-
   - type: DisposalRouter
     degrees:
     - 0
@@ -204,6 +218,11 @@
       state_broken: pipe-b
   - type: Flippable
     entity: DisposalRouter
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.5,-0.25,0.5,0.5"
+        layer: [ Underplating ]
 
 - type: entity
   id: DisposalJunction
@@ -215,7 +234,6 @@
     drawdepth: BelowFloor
     sprite: Constructible/Power/disposal.rsi
     state: conpipe-j1
-
   - type: DisposalJunction
     degrees:
     - 0
@@ -229,17 +247,21 @@
       state_broken: pipe-b
   - type: Flippable
     entity: DisposalJunctionFlipped
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.5,-0.5,0.5,0.25"
+        layer: [ Underplating ]
 
 - type: entity
   id: DisposalJunctionFlipped
   parent: DisposalJunction
-  name: flipped disposal junction
+  suffix: flipped
   components:
   - type: Sprite
     drawdepth: BelowFloor
     sprite: Constructible/Power/disposal.rsi
     state: conpipe-j2
-
   - type: DisposalJunction
     degrees:
     - 0
@@ -253,6 +275,11 @@
       state_broken: pipe-b
   - type: Flippable
     entity: DisposalJunction
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.5,-0.25,0.5,0.5"
+        layer: [ Underplating ]
 
 - type: entity
   id: DisposalYJunction
@@ -264,7 +291,6 @@
     drawdepth: BelowFloor
     sprite: Constructible/Power/disposal.rsi
     state: conpipe-y
-
   - type: DisposalJunction
     degrees:
     - 0
@@ -276,6 +302,11 @@
       state_free: conpipe-y
       state_anchored: pipe-y
       state_broken: pipe-b
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.5,-0.5,0.25,0.5"
+        layer: [ Underplating ]
 
 - type: entity
   id: DisposalBend
@@ -287,7 +318,6 @@
     drawdepth: BelowFloor
     sprite: Constructible/Power/disposal.rsi
     state: conpipe-c
-
   - type: DisposalBend
   - type: Appearance
     visuals:
@@ -295,3 +325,8 @@
       state_free: conpipe-c
       state_anchored: pipe-c
       state_broken: pipe-b
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.5,-0.5,0.25,0.25"
+        layer: [ Underplating ]

Resources/Prototypes/Entities/Constructible/Walls/bar_sign.yml

@@ -5,11 +5,14 @@
   - type: Clickable
   - type: InteractionOutline
   - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.45, -0.95, 0.45, 1"
+        layer: [ Passable ]
   - type: Sprite
     drawdepth: WallTops
     sprite: Constructible/Misc/barsign.rsi
     state: empty
-
   - type: PowerReceiver
   - type: BarSign
 
@@ -43,5 +46,10 @@
   components:
   - type: BarSign
     current: CyberSylph
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "-0.45, -0.95, 0.95, 1.5"
+        layer: [ Passable ]
   - type: Sprite
     drawdepth: Ghosts

Resources/Prototypes/Entities/Constructible/Walls/lighting.yml

@@ -5,6 +5,10 @@
   - type: Clickable
   - type: InteractionOutline
   - type: Physics
+    shapes:
+    - !type:PhysShapeAabb
+      bounds: "-0.45, -0.15, 0.45, 0.35"
+      layer: [ Passable ]
   - type: LoopingSound
   - type: Sprite
     sprite: Constructible/Lighting/light_tube.rsi
@@ -48,6 +52,11 @@
     energy: 1.0
     enabled: false
     offset: "-0.5, 0"
+  - type: Physics
+    shapes:
+      - !type:PhysShapeAabb
+        bounds: "0, 0.1, 0.25, 0.1"
+        layer: [ Passable ]
   - type: PoweredLight
     bulb: Bulb
   - type: PowerReceiver

Resources/Prototypes/Entities/Singularity/emitter.yml

@@ -0,0 +1,63 @@
+- type: entity
+  name: Emitter
+  description: "A machine that fires bolts of energy, used for powering containment fields at a safe distance."
+  id: Emitter
+  placement:
+    mode: SnapgridCenter
+  components:
+  - type: InteractionOutline
+  - type: Clickable
+  - type: Physics
+    anchored: true
+    shapes:
+    - !type:PhysShapeAabb
+      bounds: "-0.5, -0.5, 0.5, 0.5"
+      layer: [MobMask, Opaque]
+  - type: SnapGrid
+    offset: Center
+  - type: Sprite
+    sprite: Constructible/Power/emitter.rsi
+    layers:
+    - state: emitter2
+    - state: emitter-beam
+      shader: unshaded
+      visible: false
+    - state: emitter-lock
+      shader: unshaded
+      visible: false
+  - type: Emitter
+  - type: PowerConsumer
+    voltage: Medium
+  - type: NodeContainer
+    nodes:
+    - !type:AdjacentNode
+      nodeGroupID: MVPower
+  - type: Anchorable
+  - type: Pullable
+  - type: Appearance
+    visuals:
+    - type: EmitterVisualizer
+  - type: AccessReader
+    access: [[ "Engineering" ]]
+
+
+- type: entity
+  name: Emitter Bolt
+  description: "A bolt of energy."
+  id: EmitterBolt
+  parent: BulletBase
+  components:
+  - type: Sprite
+    sprite: Constructible/Power/emitter.rsi
+    state: ''
+    layers:
+    - state: emitter_projectile
+      shader: unshaded
+  - type: Icon
+    sprite: Constructible/Power/emitter.rsi
+    state: emitter_projectile
+  - type: EmitterBoltComponent
+  - type: Projectile
+    soundHit: /Audio/Weapons/Guns/Hits/bullet_hit.ogg
+    damages:
+      Heat: 20

Resources/Prototypes/Entities/singularity.yml

@@ -0,0 +1,133 @@
+- type: entity
+  name: "Gravitational Singularity"
+  description: "A mesmerizing swirl of darkness that sucks in everything.\nIf it's moving towards you, run."
+  id: Singularity
+  components:
+  - type: Clickable
+  - type: Physics
+    anchored: false
+    shapes:
+    - !type:PhysShapeCircle
+      radius: 0.5
+      layer: [Impassable]
+      mask:
+      - AllMask
+    mass: 5
+  - type: Singularity
+  - type: RadiationPulse
+    range: 15
+    decay: false
+  - type: Sprite
+    sprite: Effects/Singularity/singularity_1.rsi
+    state: singularity_1
+  - type: Icon
+    sprite: Effects/Singularity/singularity_1.rsi
+    state: singularity_1
+    drawdepth: Items
+
+- type: entity
+  id: RadiationCollector
+  name: Radiation Collector
+  description: A machine that collects Radiation and turns it into power.
+  placement:
+    mode: SnapgridCenter
+  components:
+  - type: Clickable
+  - type: InteractionOutline
+  - type: Physics
+    anchored: true
+    shapes:
+    - !type:PhysShapeAabb
+      bounds: "-0.5, -0.5, 0.5, 0.5"
+      layer: [MobMask, Opaque]
+  - type: SnapGrid
+    offset: Center
+  - type: Sprite
+    sprite: Constructible/Power/radiation_collector.rsi
+    layers:
+      - state: ca_on
+        map: ["enum.RadiationCollectorVisualLayers.Main"]
+  - type: Appearance
+    visuals:
+      - type: RadiationCollectorVisualizer
+  - type: NodeContainer
+    nodes:
+    - !type:AdjacentNode
+      nodeGroupID: HVPower
+  - type: RadiationCollector
+  - type: Anchorable
+  - type: Pullable
+
+- type: entity
+  name: Containment Field Generator
+  description: "A machine that generates a containment field when powered by an emitter.\nKeeps the Singularity docile."
+  id: ContainmentFieldGenerator
+  placement:
+    mode: SnapgridCenter
+  components:
+  - type: InteractionOutline
+  - type: Clickable
+  - type: Physics
+    anchored: true
+    shapes:
+    - !type:PhysShapeAabb
+      bounds: "-0.5, -0.5, 0.5, 0.5"
+      layer: [MobMask, Opaque]
+  - type: SnapGrid
+    offset: Center
+  - type: Sprite
+    sprite: Constructible/Power/field_generator.rsi
+    state: Field_Gen
+  - type: Icon
+    sprite: Constructible/Power/field_generator.rsi
+    state: Field_Gen
+  - type: ContainmentFieldGenerator
+  - type: Anchorable
+  - type: Pullable
+
+- type: entity
+  name: Containment Field
+  description: "A containment field that repels gravitational singularities."
+  id: ContainmentField
+  placement:
+    mode: SnapgridCenter
+  components:
+  - type: InteractionOutline
+  - type: Clickable
+  - type: Physics
+    anchored: true
+    shapes:
+    - !type:PhysShapeAabb
+      bounds: "-0.5, -0.5, 0.5, 0.5"
+      layer: [MobMask, Opaque]
+  - type: SnapGrid
+    offset: Center
+  - type: Sprite
+    sprite: Effects/contain_f.rsi
+    state: Contain_F
+  - type: Icon
+    sprite: Effects/contain_f.rsi
+    state: Contain_F
+  - type: ContainmentField
+
+- type: entity
+  name: Gravitational Singularity Generator
+  description: An Odd Device which produces a Gravitational Singularity when set up.
+  id: SinguloGenerator
+  components:
+    - type: Sprite
+      sprite: Effects/Singularity/singulo_gen.rsi
+      state: singulo_gen
+    - type: SingularityGenerator
+    - type: InteractionOutline
+    - type: Clickable
+    - type: Physics
+      anchored: true
+      shapes:
+        - !type:PhysShapeAabb
+          bounds: "-0.5, -0.5, 0.5, 0.5"
+          layer: [ MobMask ]
+    - type: SnapGrid
+      offset: Center
+    - type: Anchorable
+    - type: Pullable

Resources/Prototypes/Recipes/Construction/Graphs/particle_accelerator.yml

@@ -0,0 +1,358 @@
+- type: constructionGraph
+  id: particleAcceleratorControlBox
+  start: start
+  graph:
+    - node: start
+      entity: ParticleAcceleratorControlBoxUnfinished
+      actions:
+        - !type:SpriteStateChange
+          state: "control_box"
+      edges:
+        - to: wired
+          conditions:
+            - !type:EntityAnchored {}
+          steps:
+            - material: Cable
+              doAfter: 0.5
+
+    - node: wired
+      entity: ParticleAcceleratorControlBoxUnfinished
+      actions:
+        - !type:SpriteStateChange
+          state: "control_boxw"
+      edges:
+        - to: completed
+          conditions:
+            - !type:EntityAnchored {}
+          completed:
+            - !type:SnapToGrid {}
+          steps:
+            - tool: Screwing
+              doAfter: 0.5
+        - to: start
+          conditions:
+            - !type:EntityAnchored {}
+          completed:
+            - !type:SpawnPrototype
+              prototype: ApcExtensionCableStack1
+          steps:
+            - tool: Cutting
+              doAfter: 0.5
+
+    - node: completed
+      entity: ParticleAcceleratorControlBox
+      edges:
+        - to: wired
+          conditions:
+            - !type:EntityAnchored { }
+          steps:
+            - tool: Prying
+              doAfter: 0.5
+
+
+- type: constructionGraph
+  id: particleAcceleratorPowerBox
+  start: start
+  graph:
+    - node: start
+      entity: ParticleAcceleratorPowerBoxUnfinished
+      actions:
+        - !type:SpriteStateChange
+          state: "power_box"
+      edges:
+        - to: wired
+          conditions:
+            - !type:EntityAnchored {}
+          steps:
+            - material: Cable
+              doAfter: 0.5
+
+    - node: wired
+      entity: ParticleAcceleratorPowerBoxUnfinished
+      actions:
+        - !type:SpriteStateChange
+          state: "power_boxw"
+      edges:
+        - to: completed
+          conditions:
+            - !type:EntityAnchored {}
+          completed:
+            - !type:SnapToGrid {}
+          steps:
+            - tool: Screwing
+              doAfter: 0.5
+        - to: start
+          conditions:
+            - !type:EntityAnchored {}
+          completed:
+            - !type:SpawnPrototype
+              prototype: ApcExtensionCableStack1
+          steps:
+            - tool: Cutting
+              doAfter: 0.5
+
+    - node: completed
+      entity: ParticleAcceleratorPowerBox
+      edges:
+        - to: wired
+          conditions:
+            - !type:EntityAnchored { }
+          steps:
+            - tool: Screwing
+              doAfter: 0.5
+
+
+- type: constructionGraph
+  id: particleAcceleratorFuelChamber
+  start: start
+  graph:
+    - node: start
+      entity: ParticleAcceleratorFuelChamberUnfinished
+      actions:
+        - !type:SpriteStateChange
+          state: "fuel_chamber"
+      edges:
+        - to: wired
+          conditions:
+            - !type:EntityAnchored {}
+          steps:
+            - material: Cable
+              doAfter: 0.5
+
+    - node: wired
+      entity: ParticleAcceleratorFuelChamberUnfinished
+      actions:
+        - !type:SpriteStateChange
+          state: "fuel_chamberw"
+      edges:
+        - to: completed
+          conditions:
+            - !type:EntityAnchored {}
+          completed:
+            - !type:SnapToGrid {}
+          steps:
+            - tool: Screwing
+              doAfter: 0.5
+        - to: start
+          conditions:
+            - !type:EntityAnchored {}
+          completed:
+            - !type:SpawnPrototype
+              prototype: ApcExtensionCableStack1
+          steps:
+            - tool: Cutting
+              doAfter: 0.5
+
+    - node: completed
+      entity: ParticleAcceleratorFuelChamber
+      edges:
+        - to: wired
+          conditions:
+            - !type:EntityAnchored { }
+          steps:
+            - tool: Screwing
+              doAfter: 0.5
+
+- type: constructionGraph
+  id: particleAcceleratorEndCap
+  start: start
+  graph:
+    - node: start
+      entity: ParticleAcceleratorEndCapUnfinished
+      actions:
+        - !type:SpriteStateChange
+          state: "end_cap"
+      edges:
+        - to: wired
+          conditions:
+            - !type:EntityAnchored {}
+          steps:
+            - material: Cable
+              doAfter: 0.5
+
+    - node: wired
+      entity: ParticleAcceleratorEndCapUnfinished
+      actions:
+        - !type:SpriteStateChange
+          state: "end_capw"
+      edges:
+        - to: completed
+          conditions:
+            - !type:EntityAnchored {}
+          completed:
+            - !type:SnapToGrid {}
+          steps:
+            - tool: Screwing
+              doAfter: 0.5
+        - to: start
+          conditions:
+            - !type:EntityAnchored {}
+          completed:
+            - !type:SpawnPrototype
+              prototype: ApcExtensionCableStack1
+          steps:
+            - tool: Cutting
+              doAfter: 0.5
+
+    - node: completed
+      entity: ParticleAcceleratorEndCap
+      edges:
+        - to: wired
+          conditions:
+            - !type:EntityAnchored { }
+          steps:
+            - tool: Screwing
+              doAfter: 0.5
+
+- type: constructionGraph
+  id: particleAcceleratorEmitterLeft
+  start: start
+  graph:
+    - node: start
+      entity: ParticleAcceleratorEmitterLeftUnfinished
+      actions:
+        - !type:SpriteStateChange
+          state: "emitter_left"
+      edges:
+        - to: wired
+          conditions:
+            - !type:EntityAnchored {}
+          steps:
+            - material: Cable
+              doAfter: 0.5
+
+    - node: wired
+      entity: ParticleAcceleratorEmitterLeftUnfinished
+      actions:
+        - !type:SpriteStateChange
+          state: "emitter_leftw"
+      edges:
+        - to: completed
+          conditions:
+            - !type:EntityAnchored {}
+          completed:
+            - !type:SnapToGrid {}
+          steps:
+            - tool: Screwing
+              doAfter: 0.5
+        - to: start
+          conditions:
+            - !type:EntityAnchored {}
+          completed:
+            - !type:SpawnPrototype
+              prototype: ApcExtensionCableStack1
+          steps:
+            - tool: Cutting
+              doAfter: 0.5
+
+    - node: completed
+      entity: ParticleAcceleratorEmitterLeft
+      edges:
+        - to: wired
+          conditions:
+            - !type:EntityAnchored { }
+          steps:
+            - tool: Screwing
+              doAfter: 0.5
+
+- type: constructionGraph
+  id: particleAcceleratorEmitterCenter
+  start: start
+  graph:
+    - node: start
+      entity: ParticleAcceleratorEmitterCenterUnfinished
+      actions:
+        - !type:SpriteStateChange
+          state: "emitter_center"
+      edges:
+        - to: wired
+          conditions:
+            - !type:EntityAnchored {}
+          steps:
+            - material: Cable
+              doAfter: 0.5
+
+    - node: wired
+      entity: ParticleAcceleratorEmitterCenterUnfinished
+      actions:
+        - !type:SpriteStateChange
+          state: "emitter_centerw"
+      edges:
+        - to: completed
+          conditions:
+            - !type:EntityAnchored {}
+          completed:
+            - !type:SnapToGrid {}
+          steps:
+            - tool: Screwing
+              doAfter: 0.5
+        - to: start
+          conditions:
+            - !type:EntityAnchored {}
+          completed:
+            - !type:SpawnPrototype
+              prototype: ApcExtensionCableStack1
+          steps:
+            - tool: Cutting
+              doAfter: 0.5
+
+    - node: completed
+      entity: ParticleAcceleratorEmitterCenter
+      edges:
+        - to: wired
+          conditions:
+            - !type:EntityAnchored { }
+          steps:
+            - tool: Screwing
+              doAfter: 0.5
+
+- type: constructionGraph
+  id: particleAcceleratorEmitterRight
+  start: start
+  graph:
+    - node: start
+      entity: ParticleAcceleratorEmitterRightUnfinished
+      actions:
+        - !type:SpriteStateChange
+          state: "emitter_right"
+      edges:
+        - to: wired
+          conditions:
+            - !type:EntityAnchored {}
+          steps:
+            - material: Cable
+              doAfter: 0.5
+
+    - node: wired
+      entity: ParticleAcceleratorEmitterRightUnfinished
+      actions:
+        - !type:SpriteStateChange
+          state: "emitter_rightw"
+      edges:
+        - to: completed
+          conditions:
+            - !type:EntityAnchored {}
+          completed:
+            - !type:SnapToGrid {}
+          steps:
+            - tool: Screwing
+              doAfter: 0.5
+        - to: start
+          conditions:
+            - !type:EntityAnchored {}
+          completed:
+            - !type:SpawnPrototype
+              prototype: ApcExtensionCableStack1
+          steps:
+            - tool: Cutting
+              doAfter: 0.5
+
+    - node: completed
+      entity: ParticleAcceleratorEmitterRight
+      edges:
+        - to: wired
+          conditions:
+            - !type:EntityAnchored { }
+          steps:
+            - tool: Screwing
+              doAfter: 0.5

Resources/Prototypes/Shaders/greyscale.yml

@@ -0,0 +1,4 @@
+- type: shader
+  id: Greyscale
+  kind: source
+  path: "/Textures/Shaders/greyscale.swsl"

Resources/Textures/Constructible/Power/PA/control_box.rsi/meta.json

@@ -0,0 +1 @@
+{"version": 1, "size": {"x": 32, "y": 32}, "license": "CC-BY-SA-3.0", "states": [{"name": "control_box", "directions": 1, "delays": [[1.0]]},{"name": "control_boxc", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "control_box_unlitp", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "control_box_unlitp0", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "control_box_unlitp1", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "control_box_unlitp2", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "control_box_unlitp3", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "control_boxw", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}]}

Resources/Textures/Constructible/Power/PA/emitter_center.rsi/meta.json

@@ -0,0 +1 @@
+{"version": 1, "size": {"x": 32, "y": 32}, "license": "CC-BY-SA-3.0", "states": [{"name": "emitter_center", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_centerc", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_center_unlitp", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_center_unlitp0", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_center_unlitp1", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_center_unlitp2", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_center_unlitp3", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_centerw", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}]}

Resources/Textures/Constructible/Power/PA/emitter_left.rsi/meta.json

@@ -0,0 +1 @@
+{"version": 1, "size": {"x": 32, "y": 32}, "license": "CC-BY-SA-3.0", "states": [{"name": "emitter_left", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_leftc", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_left_unlitp", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_left_unlitp0", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_left_unlitp1", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_left_unlitp2", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_left_unlitp3", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_leftw", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}]}

Resources/Textures/Constructible/Power/PA/emitter_right.rsi/meta.json

@@ -0,0 +1 @@
+{"version": 1, "size": {"x": 32, "y": 32}, "license": "CC-BY-SA-3.0", "states": [{"name": "emitter_right", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_rightc", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_right_unlitp", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_right_unlitp0", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_right_unlitp1", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_right_unlitp2", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_right_unlitp3", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "emitter_rightw", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}]}