Allow entity skin number to be passed and apply the corresponding textures to the entity material

Assets/Scripts/Game/Entity.cs

@@ -6,11 +6,14 @@ public class Entity
     private readonly int entityNum;
     private readonly VisualStyle visualStyle;
 
+    private int skinNumber;
+
     private GameObject gameObject;
 
     private MeshFilter meshFilter;
     private MeshRenderer meshRenderer;
     private SkinnedMeshRenderer skinnedMeshRenderer;
+    private Material material;
     
     private AliasModel aliasModel;
     private GameObject brushModel;
@@ -127,9 +130,24 @@ public class Entity
         gameObject.transform.rotation = rotation;
     }
 
+    public void SetSkin(int skinNum)
+    {
+        skinNumber = skinNum;
+
+        if (material == null)
+            return;
+
+        var skins = aliasModel.Textures.Skins;
+        if (skinNumber >= 0 && skinNumber < skins.Count)
+        {
+            var skin = skins[skinNumber];
+            if (skin.Frames.Count > 0)
+                visualStyle.SetAliasModelTextures(material, skin.Frames[0].MainTexture, skin.Frames[0].FullBrightTexture);
+        }
+    }
+
     private void AssignMeshRenderer()
     {
-        Material material;
         if (aliasModel.IsAnimated)
         {
             visualStyle.SetupAliasModelRenderer(skinnedMeshRenderer);
@@ -143,8 +161,6 @@ public class Entity
             meshRenderer.enabled = true;
         }
         
-        var textures = aliasModel.Textures.PrimaryTextures;
-        if (textures != null)
-            visualStyle.SetAliasModelTextures(material, textures.MainTexture, textures.FullBrightTexture);
+        SetSkin(skinNumber);
     }
 }

Assets/Scripts/Game/GameState.cs

@@ -74,12 +74,6 @@ public class GameState
     }
 
     public Entity GetEntity(int entityNum)
-    {
-        entities.TryGetValue(entityNum, out var entity);
-        return entity;
-    }
-
-    private Entity GetOrCreateEntity(int entityNum)
     {
         if (!entities.TryGetValue(entityNum, out var entity))
         {
@@ -92,7 +86,7 @@ public class GameState
 
     public void SetEntityAliasModel(int entityNum, string modelName)
     {
-        var entity = GetOrCreateEntity(entityNum);
+        var entity = GetEntity(entityNum);
 
         if (!uq.GameAssets.TryGetAliasModel(modelName, out var aliasModel))
         {
@@ -105,7 +99,7 @@ public class GameState
 
     public void SetEntityBrushModel(int entityNum, string modelName)
     {
-        var entity = GetOrCreateEntity(entityNum);
+        var entity = GetEntity(entityNum);
 
         if (!uq.GameAssets.TryGetBrushModel(modelName, out var brushModel))
         {
@@ -125,7 +119,7 @@ public class GameState
 
     public void SetEntityWorldModel(int entityNum, int subModelNum)
     {
-        var entity = GetOrCreateEntity(entityNum);
+        var entity = GetEntity(entityNum);
 
         if (!uq.GameAssets.TryGetWorldSubModel(subModelNum, out var subModel))
         {

Assets/Scripts/Modules/GameModule.Interop.cs

@@ -17,6 +17,7 @@ public partial class GameModule : CallbackHandler<GameModule>
             SetEntityTransform = CreateCallback<GameSetEntityTransformCallback>(Callback_GameSetEntityTransform),
             RemoveEntity = CreateCallback<GameRemoveEntityCallback>(Callback_GameRemoveEntity),
             UpdateEntityAnimation = CreateCallback<GameUpdateEntityAnimationCallback>(Callback_GameUpdateEntityAnimation),
+            SetEntitySkin = CreateCallback<GameSetEntitySkinCallback>(Callback_GameSetEntitySkin),
         };
         
         RegisterCallbacks(callbacks);
@@ -34,6 +35,7 @@ public partial class GameModule : CallbackHandler<GameModule>
         public IntPtr SetEntityTransform;
         public IntPtr RemoveEntity;
         public IntPtr UpdateEntityAnimation;
+        public IntPtr SetEntitySkin;
     }
 
     [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
@@ -71,4 +73,13 @@ public partial class GameModule : CallbackHandler<GameModule>
     {
         GetSelf(target).UpdateEntityAnimation(entityNum, frameNum);
     }
+
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+    private delegate void GameSetEntitySkinCallback(IntPtr target, int entityNum, int skinNum);
+
+    [MonoPInvokeCallback(typeof(GameSetEntitySkinCallback))]
+    private static void Callback_GameSetEntitySkin(IntPtr target, int entityNum, int skinNum)
+    {
+        GetSelf(target).SetEntitySkin(entityNum, skinNum);
+    }
 }

Assets/Scripts/Modules/GameModule.cs

@@ -62,4 +62,9 @@ public partial class GameModule
     {
         uq.GameState.GetEntity(entityNum)?.UpdateAnimation(frameNum);
     }
+    
+    private void SetEntitySkin(int entityNum, int skinNum)
+    {
+        uq.GameState.GetEntity(entityNum)?.SetSkin(skinNum);
+    }
 }

engine/Quake/cl_parse.c

@@ -514,6 +514,8 @@ void CL_ParseUpdate (int bits)
 		ent->skinnum = skin;
 		if (num > 0 && num <= cl.maxclients)
 			R_TranslateNewPlayerSkin (num - 1); //johnfitz -- was R_TranslatePlayerSkin
+
+		UQ_Game_SetEntitySkin(num, skin);
 	}
 	if (bits & U_EFFECTS)
 		ent->effects = MSG_ReadByte();

engine/Quake/client.h

@@ -376,6 +376,7 @@ void UQ_Game_SetEntityModel(int entityNum, const char *modelName);
 void UQ_Game_SetEntityTransform(int entityNum, vec3_t origin, vec3_t angles);
 void UQ_Game_RemoveEntity(int entityNum);
 void UQ_Game_UpdateEntityAnimation(int entityNum, float frameNum);
+void UQ_Game_SetEntitySkin(int entityNum, int skinNum);
 
 #endif	/* _CLIENT_H_ */
 

engine/UniQuake/game_uniquake.c

@@ -10,6 +10,7 @@ typedef struct unity_gamecalls_s
 	void(*SetEntityTransform)(void *target, int entityNum, vec3_t origin, vec3_t angles);
 	void(*RemoveEntity)(void *target, int entityNum);
 	void(*UpdateEntityAnimation)(void *target, int entityNum, float frameNum);
+	void(*SetEntitySkin)(void *target, int entityNum, int skinNum);
 } unity_gamecalls_t;
 
 const unity_gamecalls_t *unity_gamecalls;
@@ -33,3 +34,8 @@ void UQ_Game_UpdateEntityAnimation(int entityNum, float frameNum)
 {
 	unity_gamecalls->UpdateEntityAnimation(unity_gamecalls->target, entityNum, frameNum);
 }
+
+void UQ_Game_SetEntitySkin(int entityNum, int skinNum)
+{
+	unity_gamecalls->SetEntitySkin(unity_gamecalls->target, entityNum, skinNum);
+}