MetaWorlds compat

Author: FalsePattern

src/main/java/com/falsepattern/chunk/internal/mixin/mixins/common/vanilla/AnvilChunkLoaderMixin.java

@@ -29,7 +29,10 @@
 import lombok.val;
 import org.apache.logging.log4j.Level;
 import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.Overwrite;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
 import net.minecraft.block.Block;
 import net.minecraft.entity.Entity;
@@ -53,9 +56,13 @@ public abstract class AnvilChunkLoaderMixin {
      *
      * @author FalsePattern
      * @reason Replace functionality
+     * @implNote Inject-cancel instead of overwrite for compat with Metaworlds-Mixins
      */
-    @Overwrite
-    private void writeChunkToNBT(Chunk chunk, World world, NBTTagCompound nbt) {
+    @Inject(method = "writeChunkToNBT",
+            at = @At("HEAD"),
+            cancellable = true,
+            require = 1)
+    private void writeChunkToNBT(Chunk chunk, World world, NBTTagCompound nbt, CallbackInfo ci) {
         nbt.setByte("V", (byte) 1);
         nbt.setInteger("xPos", chunk.xPosition);
         nbt.setInteger("zPos", chunk.zPosition);
@@ -65,6 +72,7 @@ private void writeChunkToNBT(Chunk chunk, World world, NBTTagCompound nbt) {
         writeSubChunks(chunk, nbt);
         writeCustomData(chunk, nbt);
         writeEntities(chunk, world, nbt);
+        ci.cancel();
     }
 
     /**
@@ -73,9 +81,13 @@ private void writeChunkToNBT(Chunk chunk, World world, NBTTagCompound nbt) {
      *
      * @author FalsePattern
      * @reason Replace functionality
+     * @implNote Inject-cancel instead of overwrite for compat with Metaworlds-Mixins
      */
-    @Overwrite
-    private Chunk readChunkFromNBT(World world, NBTTagCompound nbt) {
+    @Inject(method = "readChunkFromNBT",
+            at = @At("HEAD"),
+            cancellable = true,
+            require = 1)
+    private void readChunkFromNBT(World world, NBTTagCompound nbt, CallbackInfoReturnable<Chunk> cir) {
         int x = nbt.getInteger("xPos");
         int z = nbt.getInteger("zPos");
         Chunk chunk = new Chunk(world, x, z);
@@ -85,7 +97,7 @@ private Chunk readChunkFromNBT(World world, NBTTagCompound nbt) {
         readCustomData(chunk, nbt);
 
         // End this method here and split off entity loading to another method
-        return chunk;
+        cir.setReturnValue(chunk);
     }
 
     private void readCustomData(Chunk chunk, NBTTagCompound nbt) {