Injector sprite fix (#9011)

Content.Client/SubFloor/SubFloorHideSystem.cs

@@ -53,16 +53,19 @@ public sealed class SubFloorHideSystem : SharedSubFloorHideSystem
         }
 
         // Is there some layer that is always visible?
-        if (args.Sprite.LayerMapTryGet(SubfloorLayers.FirstLayer, out var firstLayer))
+        var hasVisibleLayer = false;
+        foreach (var layerKey in component.VisibleLayers)
         {
-            var layer = args.Sprite[firstLayer];
+            if (!args.Sprite.LayerMapTryGet(layerKey, out var layerIndex))
+                continue;
+
+            var layer = args.Sprite[layerIndex];
             layer.Visible = true;
             layer.Color = layer.Color.WithAlpha(1f);
-            args.Sprite.Visible = true;
-            return;
+            hasVisibleLayer = true;
         }
 
-        args.Sprite.Visible = revealed;
+        args.Sprite.Visible = hasVisibleLayer || revealed;
     }
 
     private void UpdateAll()
@@ -73,8 +76,3 @@ public sealed class SubFloorHideSystem : SharedSubFloorHideSystem
         }
     }
 }
-
-public enum SubfloorLayers : byte
-{
-    FirstLayer, // always visible. E.g. vent part of a vent..
-}

Content.Shared/SubFloor/SharedSubFloorHideSystem.cs

@@ -184,4 +184,9 @@ namespace Content.Shared.SubFloor
         Covered, // is there a floor tile over this entity
         ScannerRevealed, // is this entity revealed by a scanner or some other entity?
     }
+
+    public enum SubfloorLayers : byte
+    {
+        FirstLayer
+    }
 }

Content.Shared/SubFloor/SubFloorHideComponent.cs

@@ -1,4 +1,6 @@
 using Robust.Shared.GameStates;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Generic;
 
 namespace Content.Shared.SubFloor
 {
@@ -43,6 +45,13 @@ namespace Content.Shared.SubFloor
         [DataField("scannerTransparency")]
         public float ScannerTransparency = 0.8f;
 
+        /// <summary>
+        ///     Sprite layer keys for the layers that are always visible, even if the entity is below a floor tile. E.g.,
+        ///     the vent part of a vent is always visible, even though the piping is hidden.
+        /// </summary>
+        [DataField("visibleLayers", customTypeSerializer:typeof(CustomHashSetSerializer<object, AppearanceKeySerializer>))]
+        public HashSet<object> VisibleLayers = new() { SubfloorLayers.FirstLayer };
+
         /// <summary>
         ///     The entities this subfloor is revealed by.
         /// </summary>

Resources/Prototypes/Entities/Structures/Piping/Atmospherics/unary.yml

@@ -158,8 +158,9 @@
       layers:
         - state: pipeHalf
           sprite: Structures/Piping/Atmospherics/pipe.rsi
-          map: [ "enum.PipeVisualLayers.Pipe", "enum.SubfloorLayers.FirstLayer" ]
+          map: [ "enum.PipeVisualLayers.Pipe" ]
         - state: injector
+          map: [ "enum.SubfloorLayers.FirstLayer" ]
         - state: injector-unshaded
           shader: unshaded
           map: [ "unshaded" ]
@@ -177,6 +178,10 @@
     - type: Construction
       graph: GasUnary
       node: outletinjector
+    - type: SubFloorHide
+      visibleLayers:
+      - enum.SubfloorLayers.FirstLayer
+      - unshaded
 
 - type: entity
   parent: BaseMachinePowered