Improved icon smoothing to use ECS properly, cables smooth now.

Content.Client/Content.Client.csproj

@@ -90,6 +90,7 @@
     <Compile Include="GameObjects\Components\Weapons\Ranged\ClientRangedWeaponComponent.cs" />
     <Compile Include="GameObjects\EntitySystems\CameraRecoilSystem.cs" />
     <Compile Include="GameObjects\EntitySystems\ClientNotifySystem.cs" />
+    <Compile Include="GameObjects\EntitySystems\IconSmoothSystem.cs" />
     <Compile Include="GameObjects\EntitySystems\RangedWeaponSystem.cs" />
     <Compile Include="GameObjects\EntitySystems\VerbSystem.cs" />
     <Compile Include="GameTicking\ClientGameTicker.cs" />

Content.Client/EntryPoint.cs

@@ -3,7 +3,7 @@ using Content.Client.GameObjects.Components.Actor;
 using Content.Client.GameObjects.Components.Clothing;
 using Content.Client.GameObjects.Components.Construction;
 using Content.Client.GameObjects.Components.Power;
-using Content.Client.GameObjects.Components.SmoothWalling;
+using Content.Client.GameObjects.Components.IconSmoothing;
 using Content.Client.GameObjects.Components.Storage;
 using Content.Client.GameObjects.Components.Weapons.Ranged;
 using Content.Client.GameTicking;

Content.Client/GameObjects/Components/IconSmoothing/IconSmoothComponent.cs

@@ -1,18 +1,14 @@
-using System;
-using System.Collections.Generic;
-using Content.Shared.GameObjects;
+using System.Diagnostics.CodeAnalysis;
+using Content.Client.GameObjects.EntitySystems;
+using JetBrains.Annotations;
 using SS14.Client.Interfaces.GameObjects.Components;
 using SS14.Shared.GameObjects;
 using SS14.Shared.GameObjects.Components.Transform;
-using SS14.Shared.Interfaces.GameObjects;
-using SS14.Shared.Interfaces.Map;
-using SS14.Shared.IoC;
 using SS14.Shared.Map;
-using SS14.Shared.Maths;
 using SS14.Shared.Serialization;
 using static SS14.Client.GameObjects.SpriteComponent;
 
-namespace Content.Client.GameObjects.Components.SmoothWalling
+namespace Content.Client.GameObjects.Components.IconSmoothing
 {
     // TODO: Potential improvements:
     //  Defer updating of these.
@@ -25,212 +21,115 @@ namespace Content.Client.GameObjects.Components.SmoothWalling
     ///     To use, set <c>base</c> equal to the prefix of the corner states in the sprite base RSI.
     ///     Any objects with the same <c>key</c> will connect.
     /// </remarks>
-    public class IconSmoothComponent : Component, IComponentDebug
+    public sealed class IconSmoothComponent : Component
     {
+        private string _smoothKey;
+        private string _stateBase;
+        private IconSmoothingMode _mode;
+
         public override string Name => "IconSmooth";
 
-        ISpriteComponent Sprite;
-        SnapGridComponent SnapGrid;
-
-        /// <summary>
-        ///     Prepended to the RSI state.
-        /// </summary>
-        string StateBase;
+        internal ISpriteComponent Sprite { get; private set; }
+        internal SnapGridComponent SnapGrid { get; private set; }
+        private (GridId, MapIndices) _lastPosition;
 
         /// <summary>
         ///     We will smooth with other objects with the same key.
         /// </summary>
-        string SmoothKey;
+        public string SmoothKey => _smoothKey;
 
-        IconSmoothComponent[] Neighbors = new IconSmoothComponent[8];
-        // "Use an array".
-        // Nah. I'm too lazy. This is easy to understand compared to the enum value fuckery if I used an array.
-        // Deal with it.
-        CornerFill CornerSE;
-        CornerFill CornerNE;
-        CornerFill CornerNW;
-        CornerFill CornerSW;
+        /// <summary>
+        ///     Prepended to the RSI state.
+        /// </summary>
+        public string StateBase => _stateBase;
+
+        /// <summary>
+        ///     Mode that controls how the icon should be selected.
+        /// </summary>
+        public IconSmoothingMode Mode => _mode;
+
+        /// <summary>
+        ///     Used by <see cref="IconSmoothSystem"/> to reduce redundant updates.
+        /// </summary>
+        internal int UpdateGeneration { get; set; }
 
         public override void Initialize()
         {
             base.Initialize();
 
-            var state0 = $"{StateBase}0";
             SnapGrid = Owner.GetComponent<SnapGridComponent>();
             Sprite = Owner.GetComponent<ISpriteComponent>();
-            Sprite.LayerMapSet(CornerLayers.SE, Sprite.AddLayerState(state0));
-            Sprite.LayerSetDirOffset(CornerLayers.SE, DirectionOffset.None);
-            Sprite.LayerMapSet(CornerLayers.NE, Sprite.AddLayerState(state0));
-            Sprite.LayerSetDirOffset(CornerLayers.NE, DirectionOffset.CounterClockwise);
-            Sprite.LayerMapSet(CornerLayers.NW, Sprite.AddLayerState(state0));
-            Sprite.LayerSetDirOffset(CornerLayers.NW, DirectionOffset.Flip);
-            Sprite.LayerMapSet(CornerLayers.SW, Sprite.AddLayerState(state0));
-            Sprite.LayerSetDirOffset(CornerLayers.SW, DirectionOffset.Clockwise);
         }
 
         public override void ExposeData(ObjectSerializer serializer)
         {
             base.ExposeData(serializer);
-            serializer.DataFieldCached(ref StateBase, "base", "");
-            serializer.DataFieldCached(ref SmoothKey, "key", null);
+
+            serializer.DataFieldCached(ref _stateBase, "base", "");
+            serializer.DataFieldCached(ref _smoothKey, "key", null);
+            serializer.DataFieldCached(ref _mode, "mode", IconSmoothingMode.Corners);
         }
 
         public override void Startup()
         {
             base.Startup();
 
-            SnapGrid.OnPositionChanged += SnapGridPositionChanged;
-
-            UpdateConnections(true);
-            UpdateIcon();
+            SnapGrid.OnPositionChanged += SnapGridOnPositionChanged;
+            Owner.EntityManager.RaiseEvent(Owner, new IconSmoothDirtyEvent(null, SnapGrid.Offset, Mode));
+            var state0 = $"{StateBase}0";
+            if (Mode == IconSmoothingMode.Corners)
+            {
+                Sprite.LayerMapSet(CornerLayers.SE, Sprite.AddLayerState(state0));
+                Sprite.LayerSetDirOffset(CornerLayers.SE, DirectionOffset.None);
+                Sprite.LayerMapSet(CornerLayers.NE, Sprite.AddLayerState(state0));
+                Sprite.LayerSetDirOffset(CornerLayers.NE, DirectionOffset.CounterClockwise);
+                Sprite.LayerMapSet(CornerLayers.NW, Sprite.AddLayerState(state0));
+                Sprite.LayerSetDirOffset(CornerLayers.NW, DirectionOffset.Flip);
+                Sprite.LayerMapSet(CornerLayers.SW, Sprite.AddLayerState(state0));
+                Sprite.LayerSetDirOffset(CornerLayers.SW, DirectionOffset.Clockwise);
+            }
         }
 
         public override void Shutdown()
         {
+            SnapGrid.OnPositionChanged -= SnapGridOnPositionChanged;
+            Owner.EntityManager.RaiseEvent(Owner, new IconSmoothDirtyEvent(_lastPosition, SnapGrid.Offset, Mode));
+
             base.Shutdown();
-
-            SnapGrid.OnPositionChanged -= SnapGridPositionChanged;
-            SayGoodbyes();
         }
 
-        void SayGoodbyes()
+        private void SnapGridOnPositionChanged()
         {
-            foreach (var neighbor in Neighbors)
-            {
-                // Goodbye neighbor.
-                neighbor?.UpdateConnections(false);
-                neighbor?.UpdateIcon();
-            }
+            Owner.EntityManager.RaiseEvent(Owner, new IconSmoothDirtyEvent(_lastPosition, SnapGrid.Offset, Mode));
+            _lastPosition = (Owner.Transform.GridID, SnapGrid.Position);
         }
 
-        void SnapGridPositionChanged()
-        {
-            SayGoodbyes();
-            UpdateConnections(true);
-            UpdateIcon();
-        }
-
-        void UpdateIcon()
-        {
-            // Try to turn this into a loop without hard to understand bit fuckery or 20 lines of helper functions.
-            // Challenge: do it in less lines.
-            // I dare you.
-            // No cheating like putting everything on a single line. Proper code conventions.
-            // This comment does not count, btw.
-
-            Sprite.LayerSetState(CornerLayers.NE, $"{StateBase}{(int)CornerNE}");
-            Sprite.LayerSetState(CornerLayers.SE, $"{StateBase}{(int)CornerSE}");
-            Sprite.LayerSetState(CornerLayers.SW, $"{StateBase}{(int)CornerSW}");
-            Sprite.LayerSetState(CornerLayers.NW, $"{StateBase}{(int)CornerNW}");
-        }
-
-        void UpdateConnections(bool propagate)
-        {
-            for (int i = 0; i < Neighbors.Length; i++)
-            {
-                var found = false;
-                var dir = (Direction)i;
-                foreach (var entity in SnapGrid.GetInDir(dir))
-                {
-                    if (entity.TryGetComponent(out IconSmoothComponent smooth) && smooth.SmoothKey == SmoothKey)
-                    {
-                        Neighbors[i] = smooth;
-                        if (propagate)
-                        {
-                            smooth.UpdateConnections(false);
-                            smooth.UpdateIcon();
-                        }
-                        // Temptation to use goto: 10.
-                        found = true;
-                        break;
-                    }
-                }
-
-                if (!found)
-                {
-                    Neighbors[i] = null;
-                }
-            }
-
-            CornerNE = CornerSE = CornerNW = CornerSW = CornerFill.None;
-
-            // "Use a loop".
-            // Well screw that I did the exact same thing while writing lighting corner population code in BYOND.
-            // This is 10x easier to understand and write than a complex loop working with the internet mapping of direction flags.
-            if (Neighbors[(int)Direction.North] != null)
-            {
-                CornerNE |= CornerFill.CounterClockwise;
-                CornerNW |= CornerFill.Clockwise;
-            }
-            if (Neighbors[(int)Direction.NorthEast] != null)
-            {
-                CornerNE |= CornerFill.Diagonal;
-            }
-            if (Neighbors[(int)Direction.East] != null)
-            {
-                CornerNE |= CornerFill.Clockwise;
-                CornerSE |= CornerFill.CounterClockwise;
-            }
-            if (Neighbors[(int)Direction.SouthEast] != null)
-            {
-                CornerSE |= CornerFill.Diagonal;
-            }
-            if (Neighbors[(int)Direction.South] != null)
-            {
-                CornerSE |= CornerFill.Clockwise;
-                CornerSW |= CornerFill.CounterClockwise;
-            }
-            if (Neighbors[(int)Direction.SouthWest] != null)
-            {
-                CornerSW |= CornerFill.Diagonal;
-            }
-            if (Neighbors[(int)Direction.West] != null)
-            {
-                CornerSW |= CornerFill.Clockwise;
-                CornerNW |= CornerFill.CounterClockwise;
-            }
-            if (Neighbors[(int)Direction.NorthWest] != null)
-            {
-                CornerNW |= CornerFill.Diagonal;
-            }
-        }
-
-        public string GetDebugString()
-        {
-            return string.Format(
-                "N/NE/E/SE/S/SW/W/NW: {0}/{1}/{2}/{3}/{4}/{5}/{6}/{7} cfill NE/SE/SW/NW: {8}/{9}/{10}/{11}",
-                Neighbors[(int)Direction.North]?.Owner?.Uid,
-                Neighbors[(int)Direction.NorthEast]?.Owner?.Uid,
-                Neighbors[(int)Direction.East]?.Owner?.Uid,
-                Neighbors[(int)Direction.SouthEast]?.Owner?.Uid,
-                Neighbors[(int)Direction.South]?.Owner?.Uid,
-                Neighbors[(int)Direction.SouthWest]?.Owner?.Uid,
-                Neighbors[(int)Direction.West]?.Owner?.Uid,
-                Neighbors[(int)Direction.NorthWest]?.Owner?.Uid,
-                CornerNE, CornerSE, CornerSW, CornerNW
-            );
-        }
-
-        enum CornerLayers
+        [SuppressMessage("ReSharper", "InconsistentNaming")]
+        public enum CornerLayers
         {
             SE,
             NE,
             NW,
             SW,
         }
+    }
 
-        [Flags]
-        enum CornerFill : byte
-        {
-            // These values are pulled from Baystation12.
-            // I'm too lazy to convert the state names.
-            None = 0,
-            // The cardinal tile counter-clockwise of this corner is filled.
-            CounterClockwise = 1,
-            // The diagonal tile in the direction of this corner.
-            Diagonal = 2,
-            // The cardinal tile clockwise of this corner is filled.
-            Clockwise = 4,
-        }
+    /// <summary>
+    ///     Controls the mode with which icon smoothing is calculated.
+    /// </summary>
+    [PublicAPI]
+    public enum IconSmoothingMode
+    {
+        /// <summary>
+        ///     Each icon is made up of 4 corners, each of which can get a different state depending on
+        ///     adjacent entities clockwise, counter-clockwise and diagonal with the corner.
+        /// </summary>
+        Corners,
+
+        /// <summary>
+        ///     There are 16 icons, only one of which is used at once.
+        ///     The icon selected is a bit field made up of the cardinal direction flags that have adjacent entities.
+        /// </summary>
+        CardinalFlags,
     }
 }

Content.Client/GameObjects/EntitySystems/IconSmoothSystem.cs

@@ -0,0 +1,304 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Content.Client.GameObjects.Components.IconSmoothing;
+using JetBrains.Annotations;
+using SS14.Client.Interfaces.GameObjects.Components;
+using SS14.Shared.GameObjects;
+using SS14.Shared.GameObjects.Components.Transform;
+using SS14.Shared.GameObjects.Systems;
+using SS14.Shared.Interfaces.GameObjects;
+using SS14.Shared.Interfaces.Map;
+using SS14.Shared.IoC;
+using SS14.Shared.Map;
+using SS14.Shared.Maths;
+
+namespace Content.Client.GameObjects.EntitySystems
+{
+    /// <summary>
+    ///     Entity system implementing the logic for <see cref="IconSmoothComponent"/>
+    /// </summary>
+    [UsedImplicitly]
+    internal sealed class IconSmoothSystem : EntitySystem
+    {
+#pragma warning disable 649
+        [Dependency] private readonly IMapManager _mapManager;
+#pragma warning restore 649
+
+        private readonly Queue<IEntity> _dirtyEntities = new Queue<IEntity>();
+
+        private int _generation;
+
+        public override void SubscribeEvents()
+        {
+            base.SubscribeEvents();
+
+            SubscribeEvent<IconSmoothDirtyEvent>(HandleDirtyEvent);
+        }
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            IoCManager.InjectDependencies(this);
+        }
+
+        public override void FrameUpdate(float frameTime)
+        {
+            base.FrameUpdate(frameTime);
+
+            if (_dirtyEntities.Count == 0)
+            {
+                return;
+            }
+
+            _generation += 1;
+
+            // Performance: This could be spread over multiple updates, or made parallel.
+            while (_dirtyEntities.Count > 0)
+            {
+                CalculateNewSprite(_dirtyEntities.Dequeue());
+            }
+        }
+
+        private void HandleDirtyEvent(object sender, IconSmoothDirtyEvent ev)
+        {
+            // Yes, we updates ALL smoothing entities surrounding us even if they would never smooth with us.
+            // This is simpler to implement. If you want to optimize it be my guest.
+            if (sender is IEntity senderEnt && senderEnt.IsValid() &&
+                senderEnt.HasComponent<IconSmoothComponent>())
+            {
+                var snapGrid = senderEnt.GetComponent<SnapGridComponent>();
+
+                _dirtyEntities.Enqueue(senderEnt);
+                AddValidEntities(snapGrid.GetInDir(Direction.North));
+                AddValidEntities(snapGrid.GetInDir(Direction.South));
+                AddValidEntities(snapGrid.GetInDir(Direction.East));
+                AddValidEntities(snapGrid.GetInDir(Direction.West));
+                if (ev.Mode == IconSmoothingMode.Corners)
+                {
+
+                    AddValidEntities(snapGrid.GetInDir(Direction.NorthEast));
+                    AddValidEntities(snapGrid.GetInDir(Direction.SouthEast));
+                    AddValidEntities(snapGrid.GetInDir(Direction.SouthWest));
+                    AddValidEntities(snapGrid.GetInDir(Direction.NorthWest));
+                }
+            }
+            else if (ev.LastPosition.HasValue)
+            {
+                // Entity is no longer valid, update around the last position it was at.
+                var grid = _mapManager.GetGrid(ev.LastPosition.Value.grid);
+                var pos = ev.LastPosition.Value.pos;
+
+                AddValidEntities(grid.GetSnapGridCell(pos + new MapIndices(1, 0), ev.Offset));
+                AddValidEntities(grid.GetSnapGridCell(pos + new MapIndices(-1, 0), ev.Offset));
+                AddValidEntities(grid.GetSnapGridCell(pos + new MapIndices(0, 1), ev.Offset));
+                AddValidEntities(grid.GetSnapGridCell(pos + new MapIndices(0, -1), ev.Offset));
+                if (ev.Mode == IconSmoothingMode.Corners)
+                {
+                    AddValidEntities(grid.GetSnapGridCell(pos + new MapIndices(1, 1), ev.Offset));
+                    AddValidEntities(grid.GetSnapGridCell(pos + new MapIndices(-1, -1), ev.Offset));
+                    AddValidEntities(grid.GetSnapGridCell(pos + new MapIndices(-1, 1), ev.Offset));
+                    AddValidEntities(grid.GetSnapGridCell(pos + new MapIndices(1, -1), ev.Offset));
+                }
+            }
+        }
+
+        private void AddValidEntities(IEnumerable<IEntity> candidates)
+        {
+            foreach (var entity in candidates)
+            {
+                if (entity.HasComponent<IconSmoothComponent>())
+                {
+                    _dirtyEntities.Enqueue(entity);
+                }
+            }
+        }
+
+        private void AddValidEntities(IEnumerable<IComponent> candidates)
+        {
+            AddValidEntities(candidates.Select(c => c.Owner));
+        }
+
+        private void CalculateNewSprite(IEntity entity)
+        {
+            // The generation check prevents updating an entity multiple times per tick.
+            // As it stands now, it's totally possible for something to get queued twice.
+            // Generation on the component is set after an update so we can cull updates that happened this generation.
+            if (!entity.IsValid()
+                || !entity.TryGetComponent(out IconSmoothComponent smoothing)
+                || smoothing.UpdateGeneration == _generation)
+            {
+                return;
+            }
+
+            var sprite = smoothing.Sprite;
+            var snapGrid = smoothing.SnapGrid;
+
+            switch (smoothing.Mode)
+            {
+                case IconSmoothingMode.Corners:
+                    _calculateNewSpriteCorers(smoothing, snapGrid, sprite);
+                    break;
+
+                case IconSmoothingMode.CardinalFlags:
+                    _calculateNewSpriteCardinal(smoothing, snapGrid, sprite);
+                    break;
+
+                default:
+                    throw new ArgumentOutOfRangeException();
+            }
+
+            smoothing.UpdateGeneration = _generation;
+        }
+
+        private static void _calculateNewSpriteCardinal(IconSmoothComponent smoothing, SnapGridComponent snapGrid,
+            ISpriteComponent sprite)
+        {
+            var dirs = CardinalConnectDirs.None;
+
+            if (MatchingEntity(smoothing, snapGrid.GetInDir(Direction.North)))
+                dirs |= CardinalConnectDirs.North;
+            if (MatchingEntity(smoothing, snapGrid.GetInDir(Direction.South)))
+                dirs |= CardinalConnectDirs.South;
+            if (MatchingEntity(smoothing, snapGrid.GetInDir(Direction.East)))
+                dirs |= CardinalConnectDirs.East;
+            if (MatchingEntity(smoothing, snapGrid.GetInDir(Direction.West)))
+                dirs |= CardinalConnectDirs.West;
+
+            sprite.LayerSetState(0, $"{smoothing.StateBase}{(int) dirs}");
+        }
+
+        private static void _calculateNewSpriteCorers(IconSmoothComponent smoothing, SnapGridComponent snapGrid,
+            ISpriteComponent sprite)
+        {
+            var n = MatchingEntity(smoothing, snapGrid.GetInDir(Direction.North));
+            var ne = MatchingEntity(smoothing, snapGrid.GetInDir(Direction.NorthEast));
+            var e = MatchingEntity(smoothing, snapGrid.GetInDir(Direction.East));
+            var se = MatchingEntity(smoothing, snapGrid.GetInDir(Direction.SouthEast));
+            var s = MatchingEntity(smoothing, snapGrid.GetInDir(Direction.South));
+            var sw = MatchingEntity(smoothing, snapGrid.GetInDir(Direction.SouthWest));
+            var w = MatchingEntity(smoothing, snapGrid.GetInDir(Direction.West));
+            var nw = MatchingEntity(smoothing, snapGrid.GetInDir(Direction.NorthWest));
+
+            // ReSharper disable InconsistentNaming
+            var cornerNE = CornerFill.None;
+            var cornerSE = CornerFill.None;
+            var cornerSW = CornerFill.None;
+            var cornerNW = CornerFill.None;
+            // ReSharper restore InconsistentNaming
+
+            if (n)
+            {
+                cornerNE |= CornerFill.CounterClockwise;
+                cornerNW |= CornerFill.Clockwise;
+            }
+
+            if (ne)
+            {
+                cornerNE |= CornerFill.Diagonal;
+            }
+
+            if (e)
+            {
+                cornerNE |= CornerFill.Clockwise;
+                cornerSE |= CornerFill.CounterClockwise;
+            }
+
+            if (se)
+            {
+                cornerSE |= CornerFill.Diagonal;
+            }
+
+            if (s)
+            {
+                cornerSE |= CornerFill.Clockwise;
+                cornerSW |= CornerFill.CounterClockwise;
+            }
+
+            if (sw)
+            {
+                cornerSW |= CornerFill.Diagonal;
+            }
+
+            if (w)
+            {
+                cornerSW |= CornerFill.Clockwise;
+                cornerNW |= CornerFill.CounterClockwise;
+            }
+
+            if (nw)
+            {
+                cornerNW |= CornerFill.Diagonal;
+            }
+
+            sprite.LayerSetState(IconSmoothComponent.CornerLayers.NE, $"{smoothing.StateBase}{(int) cornerNE}");
+            sprite.LayerSetState(IconSmoothComponent.CornerLayers.SE, $"{smoothing.StateBase}{(int) cornerSE}");
+            sprite.LayerSetState(IconSmoothComponent.CornerLayers.SW, $"{smoothing.StateBase}{(int) cornerSW}");
+            sprite.LayerSetState(IconSmoothComponent.CornerLayers.NW, $"{smoothing.StateBase}{(int) cornerNW}");
+        }
+
+        [System.Diagnostics.Contracts.Pure]
+        private static bool MatchingEntity(IconSmoothComponent source, IEnumerable<IEntity> candidates)
+        {
+            foreach (var entity in candidates)
+            {
+                if (!entity.TryGetComponent(out IconSmoothComponent other))
+                {
+                    return false;
+                }
+
+                if (other.SmoothKey == source.SmoothKey)
+                {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        [Flags]
+        private enum CardinalConnectDirs : byte
+        {
+            None = 0,
+            North = 1,
+            South = 2,
+            East = 4,
+            West = 8
+        }
+
+        [Flags]
+        private enum CornerFill : byte
+        {
+            // These values are pulled from Baystation12.
+            // I'm too lazy to convert the state names.
+            None = 0,
+
+            // The cardinal tile counter-clockwise of this corner is filled.
+            CounterClockwise = 1,
+
+            // The diagonal tile in the direction of this corner.
+            Diagonal = 2,
+
+            // The cardinal tile clockwise of this corner is filled.
+            Clockwise = 4,
+        }
+    }
+
+    /// <summary>
+    ///     Event raised by a <see cref="IconSmoothComponent"/> when it needs to be recalculated.
+    /// </summary>
+    public sealed class IconSmoothDirtyEvent : EntitySystemMessage
+    {
+        public IconSmoothDirtyEvent((GridId grid, MapIndices pos)? lastPosition, SnapGridOffset offset, IconSmoothingMode mode)
+        {
+            LastPosition = lastPosition;
+            Offset = offset;
+            Mode = mode;
+        }
+
+        public (GridId grid, MapIndices pos)? LastPosition { get; }
+        public SnapGridOffset Offset { get; }
+        public IconSmoothingMode Mode { get; }
+    }
+}

Resources/Prototypes/Entities/Power.yml

@@ -6,12 +6,20 @@
   - type: Clickable
   - type: BoundingBox
   - type: Sprite
+    netsync: false
     drawdepth: BelowFloor
     color: Red
-    texture: Objects/eightdirwire.png
+    sprite: Objects/power_cable.rsi
+    state: cable_0
   - type: Icon
     texture: Objects/eightdirwire.png
   - type: PowerTransfer
+  - type: SnapGrid
+    offset: Center
+  - type: IconSmooth
+    base: cable_
+    key: power_cables
+    mode: CardinalFlags
 
   snap:
   - Wire

Resources/Textures/Objects/power_cable.rsi/meta.json

@@ -0,0 +1,73 @@
+{
+	"version": 1,
+	"size": {
+		"x": 32,
+		"y": 32
+	},
+	"states": [
+		{
+			"name": "cable_0",
+			"directions": 1
+		},
+		{
+			"name": "cable_1",
+			"directions": 1
+		},
+		{
+			"name": "cable_2",
+			"directions": 1
+		},
+		{
+			"name": "cable_3",
+			"directions": 1
+		},
+		{
+			"name": "cable_4",
+			"directions": 1
+		},
+		{
+			"name": "cable_5",
+			"directions": 1
+		},
+		{
+			"name": "cable_6",
+			"directions": 1
+		},
+		{
+			"name": "cable_7",
+			"directions": 1
+		},
+		{
+			"name": "cable_8",
+			"directions": 1
+		},
+		{
+			"name": "cable_9",
+			"directions": 1
+		},
+		{
+			"name": "cable_10",
+			"directions": 1
+		},
+		{
+			"name": "cable_11",
+			"directions": 1
+		},
+		{
+			"name": "cable_12",
+			"directions": 1
+		},
+		{
+			"name": "cable_13",
+			"directions": 1
+		},
+		{
+			"name": "cable_14",
+			"directions": 1
+		},
+		{
+			"name": "cable_15",
+			"directions": 1
+		},
+	]
+}