IconSmooth additional smoothing keys (#35790)

* additionalKeys

* Update lava.yml

* Update Content.Client/IconSmoothing/IconSmoothComponent.cs

---------

Co-authored-by: slarticodefast <161409025+slarticodefast@users.noreply.github.com>

Content.Client/IconSmoothing/IconSmoothComponent.cs

@@ -26,6 +26,12 @@ namespace Content.Client.IconSmoothing
         [ViewVariables(VVAccess.ReadWrite), DataField("key")]
         public string? SmoothKey { get; private set; }
 
+        /// <summary>
+        ///     Additional keys to smooth with.
+        /// </summary>
+        [DataField]
+        public List<string> AdditionalKeys = new();
+
         /// <summary>
         ///     Prepended to the RSI state.
         /// </summary>

Content.Client/IconSmoothing/IconSmoothSystem.cs

@@ -376,7 +376,8 @@ namespace Content.Client.IconSmoothing
             while (candidates.MoveNext(out var entity))
             {
                 if (smoothQuery.TryGetComponent(entity, out var other) &&
-                    other.SmoothKey == smooth.SmoothKey &&
+                    other.SmoothKey != null &&
+                    (other.SmoothKey == smooth.SmoothKey || smooth.AdditionalKeys.Contains(other.SmoothKey)) &&
                     other.Enabled)
                 {
                     return true;

Resources/Prototypes/Entities/Structures/Walls/walls.yml

@@ -81,7 +81,7 @@
         acts: [ "Destruction" ]
 
   - type: IconSmooth
-    key: bricks
+    key: walls
     base: brick
 
 - type: entity

Resources/Prototypes/Entities/Tiles/chasm.yml

@@ -27,6 +27,8 @@
     state: full
   - type: IconSmooth
     key: chasm
+    additionalKeys:
+    - walls
     base: chasm
   - type: Physics
     bodyType: Static

Resources/Prototypes/Entities/Tiles/lava.yml

@@ -36,6 +36,8 @@
     state: full
   - type: IconSmooth
     key: floor
+    additionalKeys:
+    - walls
     base: lava
   - type: Physics
     bodyType: Static