Update TextureStitchEvent.Pre to give access to the list of ResourceLocations that will be loaded as textures. (#5870)

patches/minecraft/net/minecraft/client/renderer/texture/AtlasTexture.java.patch

@@ -1,6 +1,6 @@
 --- a/net/minecraft/client/renderer/texture/AtlasTexture.java
 +++ b/net/minecraft/client/renderer/texture/AtlasTexture.java
-@@ -79,10 +79,12 @@
+@@ -79,6 +79,7 @@
           }
        }
  
@@ -8,11 +8,14 @@
     }
  
     public AtlasTexture.SheetData func_215254_a(IResourceManager p_215254_1_, Iterable<ResourceLocation> p_215254_2_, IProfiler p_215254_3_) {
-       Set<ResourceLocation> set = Sets.newHashSet();
-+      net.minecraftforge.client.ForgeHooksClient.onTextureStitchedPre(this);
-       p_215254_3_.func_76320_a("preparing");
-       p_215254_2_.forEach((p_215253_1_) -> {
-          if (p_215253_1_ == null) {
+@@ -91,6 +92,7 @@
+             set.add(p_215253_1_);
+          }
+       });
++      net.minecraftforge.client.ForgeHooksClient.onTextureStitchedPre(this, set);
+       int i = this.field_215265_o;
+       Stitcher stitcher = new Stitcher(i, i, this.field_147636_j);
+       int j = Integer.MAX_VALUE;
 @@ -110,6 +112,7 @@
  
        int i1 = Math.min(j, k);
@@ -29,15 +32,14 @@
           try {
              iresource = p_195422_1_.func_199002_a(resourcelocation);
              p_195422_2_.func_195664_a(iresource, this.field_147636_j + 1);
-@@ -267,7 +271,94 @@
-       this.field_94252_e.clear();
+@@ -268,6 +272,93 @@
        this.field_94258_i.clear();
     }
-+   
+ 
 +   //===================================================================================================
 +   //                                           Forge Start
 +   //===================================================================================================
- 
++
 +   private final java.util.Deque<ResourceLocation> loadingSprites = new java.util.ArrayDeque<>();
 +   private final java.util.Set<ResourceLocation> loadedSprites = new java.util.HashSet<>();
 +

src/main/java/net/minecraftforge/client/ForgeHooksClient.java

@@ -31,6 +31,7 @@ import java.nio.ByteBuffer;
 import java.nio.FloatBuffer;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Set;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Random;
@@ -178,9 +179,9 @@ public class ForgeHooksClient
         return MinecraftForge.EVENT_BUS.post(new RenderSpecificHandEvent(hand, partialTicks, interpPitch, swingProgress, equipProgress, stack));
     }
 
-    public static void onTextureStitchedPre(AtlasTexture map)
+    public static void onTextureStitchedPre(AtlasTexture map, Set<ResourceLocation> resourceLocations)
     {
-        ModLoader.get().postEvent(new TextureStitchEvent.Pre(map));
+        ModLoader.get().postEvent(new TextureStitchEvent.Pre(map, resourceLocations));
 //        ModelLoader.White.INSTANCE.register(map); // TODO Custom TAS
         ModelDynBucket.LoaderDynBucket.INSTANCE.register(map);
     }

src/main/java/net/minecraftforge/client/event/TextureStitchEvent.java

@@ -19,9 +19,12 @@
 
 package net.minecraftforge.client.event;
 
+import net.minecraft.util.ResourceLocation;
 import net.minecraftforge.eventbus.api.Event;
 import net.minecraft.client.renderer.texture.AtlasTexture;
 
+import java.util.Set;
+
 
 public class TextureStitchEvent extends Event
 {
@@ -38,17 +41,29 @@ public class TextureStitchEvent extends Event
     }
 
     /**
-     * Fired when the TextureMap is told to refresh it's stitched texture. 
-     * Called after the Stitched list is cleared, but before any blocks or items
-     * add themselves to the list.
+     * Fired when the TextureMap is told to refresh it's stitched texture.
+     * Called before the {@link net.minecraft.client.renderer.texture.TextureAtlasSprite} are loaded.
      */
     public static class Pre extends TextureStitchEvent
     {
-        public Pre(AtlasTexture map){ super(map); }
+        private final Set<ResourceLocation> sprites;
+
+        public Pre(AtlasTexture map, Set<ResourceLocation> sprites)
+        {
+            super(map);
+            this.sprites = sprites;
+        }
+
+        /**
+         * Add a sprite to be stitched into the Texture Atlas.
+         */
+        public boolean addSprite(ResourceLocation sprite) {
+            return this.sprites.add(sprite);
+        }
     }
 
     /**
-     * This event is fired once the texture map has loaded all textures and 
+     * This event is fired once the texture map has loaded all textures and
      * stitched them together. All Icons should have there locations defined
      * by the time this is fired.
      */