Spray Paint (Review Ready) (#23003)

* Spray Paint (Draft)

* paint colors, paints in maints loot, cargo crate of paints.

* fix

* remove paint (sort of)

* moved paintcleaner into own system

* Moved paint to server (had to unfortunately)

* doafter now breaks when moving away.

* cant paint mobstatecomp

* loads of fixes

* fixes

* fixes

* nopaintshadercomp

* fixes

* fix

* use locale for paint remove string

* remove nopaintshadercomponent and use blacklist

* remove enabled.true from visualizer

* paint doafter event.

* add verbs for paint and remove paint and icon for paint verb.

* fixes

* no longer replaces shader when shader exists.

* replace forloop with foreach, check shader before adding and removing.

* paint doafter now separate so no copy paste code

* Entities in sprayed targets item slots are also now correctly sprayed.

* fix

* fix

* fix airlock psray painter now removes painted before painting door.

* spray paints now use openablecomponent.

* fix

* fix damn accesstypes.

* fix

* fix

Content.Client/Paint/PaintVisualizerSystem.cs

@@ -0,0 +1,120 @@
+using System.Linq;
+using Robust.Client.GameObjects;
+using static Robust.Client.GameObjects.SpriteComponent;
+using Content.Shared.Clothing;
+using Content.Shared.Hands;
+using Content.Shared.Paint;
+using Robust.Client.Graphics;
+using Robust.Shared.Prototypes;
+
+namespace Content.Client.Paint
+{
+    public sealed class PaintedVisualizerSystem : VisualizerSystem<PaintedComponent>
+    {
+        /// <summary>
+        /// Visualizer for Paint which applies a shader and colors the entity.
+        /// </summary>
+
+        [Dependency] private readonly SharedAppearanceSystem _appearance = default!;
+        [Dependency] private readonly IPrototypeManager _protoMan = default!;
+
+        public ShaderInstance? Shader; // in Robust.Client.Graphics so cannot move to shared component.
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            SubscribeLocalEvent<PaintedComponent, HeldVisualsUpdatedEvent>(OnHeldVisualsUpdated);
+            SubscribeLocalEvent<PaintedComponent, ComponentShutdown>(OnShutdown);
+            SubscribeLocalEvent<PaintedComponent, EquipmentVisualsUpdatedEvent>(OnEquipmentVisualsUpdated);
+        }
+
+        protected override void OnAppearanceChange(EntityUid uid, PaintedComponent component, ref AppearanceChangeEvent args)
+        {
+            // ShaderPrototype sadly in Robust.Client, cannot move to shared component.
+            Shader = _protoMan.Index<ShaderPrototype>(component.ShaderName).Instance();
+
+            if (args.Sprite == null)
+                return;
+
+            if (!_appearance.TryGetData<bool>(uid, PaintVisuals.Painted, out bool isPainted))
+                return;
+
+            var sprite = args.Sprite;
+
+
+            foreach (var spriteLayer in sprite.AllLayers)
+            {
+                if (spriteLayer is not Layer layer)
+                    continue;
+
+                if (layer.Shader == null) // If shader isn't null we dont want to replace the original shader.
+                {
+                    layer.Shader = Shader;
+                    layer.Color = component.Color;
+                }
+            }
+        }
+
+        private void OnHeldVisualsUpdated(EntityUid uid, PaintedComponent component, HeldVisualsUpdatedEvent args)
+        {
+            if (args.RevealedLayers.Count == 0)
+                return;
+
+            if (!TryComp(args.User, out SpriteComponent? sprite))
+                return;
+
+            foreach (var revealed in args.RevealedLayers)
+            {
+                if (!sprite.LayerMapTryGet(revealed, out var layer) || sprite[layer] is not Layer notlayer)
+                    continue;
+
+                sprite.LayerSetShader(layer, component.ShaderName);
+                sprite.LayerSetColor(layer, component.Color);
+            }
+        }
+
+        private void OnEquipmentVisualsUpdated(EntityUid uid, PaintedComponent component, EquipmentVisualsUpdatedEvent args)
+        {
+            if (args.RevealedLayers.Count == 0)
+                return;
+
+            if (!TryComp(args.Equipee, out SpriteComponent? sprite))
+                return;
+
+            foreach (var revealed in args.RevealedLayers)
+            {
+                if (!sprite.LayerMapTryGet(revealed, out var layer) || sprite[layer] is not Layer notlayer)
+                    continue;
+
+                sprite.LayerSetShader(layer, component.ShaderName);
+                sprite.LayerSetColor(layer, component.Color);
+            }
+        }
+
+        private void OnShutdown(EntityUid uid, PaintedComponent component, ref ComponentShutdown args)
+        {
+            if (!TryComp(uid, out SpriteComponent? sprite))
+                return;
+
+            component.BeforeColor = sprite.Color;
+            Shader = _protoMan.Index<ShaderPrototype>(component.ShaderName).Instance();
+
+            if (!Terminating(uid))
+            {
+                foreach (var spriteLayer in sprite.AllLayers)
+                {
+                    if (spriteLayer is not Layer layer)
+                        continue;
+
+                    if (layer.Shader == Shader) // If shader isn't same as one in component we need to ignore it.
+                    {
+                        layer.Shader = null;
+                        if (layer.Color == component.Color) // If color isn't the same as one in component we don't want to change it.
+                            layer.Color = component.BeforeColor;
+                    }
+                }
+            }
+        }
+    }
+}