Fix ChunkDataEvent.Load not firing, it now fires in the aync thread. Be careful. Closes #6471

patches/minecraft/net/minecraft/world/chunk/storage/ChunkSerializer.java.patch

@@ -17,7 +17,24 @@
                    chunkprimer.func_201637_h(blockpos);
                 }
              }
-@@ -294,12 +295,22 @@
+@@ -182,6 +183,7 @@
+       }
+ 
+       if (chunkstatus$type == ChunkStatus.Type.LEVELCHUNK) {
++         net.minecraftforge.common.MinecraftForge.EVENT_BUS.post(new net.minecraftforge.event.world.ChunkDataEvent.Load(ichunk, compoundnbt, chunkstatus$type));
+          return new ChunkPrimerWrapper((Chunk)ichunk);
+       } else {
+          ChunkPrimer chunkprimer1 = (ChunkPrimer)ichunk;
+@@ -215,6 +217,8 @@
+             chunkprimer1.func_205767_a(generationstage$carving, BitSet.valueOf(compoundnbt5.func_74770_j(s1)));
+          }
+ 
++         net.minecraftforge.common.MinecraftForge.EVENT_BUS.post(new net.minecraftforge.event.world.ChunkDataEvent.Load(ichunk, compoundnbt, chunkstatus$type));
++
+          return chunkprimer1;
+       }
+    }
+@@ -294,12 +298,22 @@
           for(int k = 0; k < chunk.func_177429_s().length; ++k) {
              for(Entity entity : chunk.func_177429_s()[k]) {
                 CompoundNBT compoundnbt3 = new CompoundNBT();

src/main/java/net/minecraftforge/event/world/ChunkDataEvent.java

@@ -22,6 +22,7 @@ package net.minecraftforge.event.world;
 import net.minecraft.nbt.CompoundNBT;
 import net.minecraft.world.World;
 import net.minecraft.world.chunk.Chunk;
+import net.minecraft.world.chunk.ChunkStatus;
 import net.minecraft.world.chunk.IChunk;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.eventbus.api.Cancelable;
@@ -54,7 +55,7 @@ public class ChunkDataEvent extends ChunkEvent
     /**
      * ChunkDataEvent.Load is fired when vanilla Minecraft attempts to load Chunk data.<br>
      * This event is fired during chunk loading in
-     * {@link net.minecraftforge.common.chunkio.ChunkIOProvider#syncCallback()}.<br>
+     * {@link net.minecraft.world.chunk.storage.ChunkSerializer.read(ServerWorld, TemplateManager, PointOfInterestManager, ChunkPos, CompoundNBT)} which means it is async, so be careful.<br>
      * <br>
      * This event is not {@link Cancelable}.<br>
      * <br>
@@ -64,9 +65,17 @@ public class ChunkDataEvent extends ChunkEvent
      **/
     public static class Load extends ChunkDataEvent
     {
-        public Load(IChunk chunk, CompoundNBT data)
+        private ChunkStatus.Type status;
+
+        public Load(IChunk chunk, CompoundNBT data, ChunkStatus.Type status)
         {
             super(chunk, data);
+            this.status = status;
+        }
+
+        public ChunkStatus.Type getStatus()
+        {
+            return this.status;
         }
     }