Update adapters.

Don't update unchanged blocks, do change NBT, no need to light.

Also clean up the forge side a bit.

worldedit-forge/src/main/java/com/sk89q/worldedit/forge/ForgeWorld.java

@@ -166,21 +166,19 @@ public <B extends BlockStateHolder<B>> boolean setBlock(BlockVector3 position, B
         boolean successful = successState != null;
 
         // Create the TileEntity
-        if (successful) {
-            if (block instanceof BaseBlock && ((BaseBlock) block).hasNbtData()) {
-                // Kill the old TileEntity
-                world.removeTileEntity(pos);
-                NBTTagCompound nativeTag = NBTConverter.toNative(((BaseBlock) block).getNbtData());
-                nativeTag.putString("id", ((BaseBlock) block).getNbtId());
-                TileEntityUtils.setTileEntity(world, position, nativeTag);
+        if (successful || old == newState) {
+            if (block instanceof BaseBlock) {
+                CompoundTag tag = ((BaseBlock) block).getNbtData();
+                if (tag != null) {
+                    NBTTagCompound nativeTag = NBTConverter.toNative(tag);
+                    nativeTag.putString("id", ((BaseBlock) block).getNbtId());
+                    TileEntityUtils.setTileEntity(world, position, nativeTag);
+                }
             }
         }
 
-        if (notifyAndLight) {
-            if (!successful) {
-                newState = old;
-            }
-            world.checkLight(pos);
+        if (successful && notifyAndLight) {
+            //world.checkLight(pos);
             world.markAndNotifyBlock(pos, chunk, old, newState, UPDATE | NOTIFY);
         }
 

worldedit-forge/src/main/java/com/sk89q/worldedit/forge/TileEntityUtils.java

@@ -29,8 +29,6 @@
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
 
-import java.lang.reflect.Constructor;
-
 import javax.annotation.Nullable;
 
 /**
@@ -46,45 +44,14 @@ private TileEntityUtils() {
      *
      * @param tag the tag
      * @param position the position
-     * @return a tag compound
      */
-    private static NBTTagCompound updateForSet(NBTTagCompound tag, BlockVector3 position) {
+    private static void updateForSet(NBTTagCompound tag, BlockVector3 position) {
         checkNotNull(tag);
         checkNotNull(position);
 
         tag.put("x", new NBTTagInt(position.getBlockX()));
         tag.put("y", new NBTTagInt(position.getBlockY()));
         tag.put("z", new NBTTagInt(position.getBlockZ()));
-
-        return tag;
-    }
-
-    /**
-     * Set a tile entity at the given location.
-     *
-     * @param world the world
-     * @param position the position
-     * @param clazz the tile entity class
-     * @param tag the tag for the tile entity (may be null to not set NBT data)
-     */
-    static void setTileEntity(World world, BlockVector3 position, Class<? extends TileEntity> clazz, @Nullable NBTTagCompound tag) {
-        checkNotNull(world);
-        checkNotNull(position);
-        checkNotNull(clazz);
-
-        TileEntity tileEntity = constructTileEntity(world, position, clazz);
-
-        if (tileEntity == null) {
-            return;
-        }
-
-        if (tag != null) {
-            // Set X, Y, Z
-            updateForSet(tag, position);
-            tileEntity.read(tag);
-        }
-
-        world.setTileEntity(new BlockPos(position.getBlockX(), position.getBlockY(), position.getBlockZ()), tileEntity);
     }
 
     /**
@@ -105,42 +72,6 @@ static void setTileEntity(World world, BlockVector3 position, @Nullable NBTTagCo
         }
     }
 
-    /**
-     * Construct a tile entity from the given class.
-     *
-     * @param world the world
-     * @param position the position
-     * @param clazz the class
-     * @return a tile entity (may be null if it failed)
-     */
-    @Nullable
-    static TileEntity constructTileEntity(World world, BlockVector3 position, Class<? extends TileEntity> clazz) {
-        Constructor<? extends TileEntity> baseConstructor;
-        try {
-            baseConstructor = clazz.getConstructor(); // creates "blank" TE
-        } catch (Throwable e) {
-            return null; // every TE *should* have this constructor, so this isn't necessary
-        }
-
-        TileEntity genericTE;
-        try {
-            genericTE = baseConstructor.newInstance();
-        } catch (Throwable e) {
-            return null;
-        }
-
-        /*
-        genericTE.blockType = Block.blocksList[block.getId()];
-        genericTE.blockMetadata = block.getData();
-        genericTE.xCoord = pt.getBlockX();
-        genericTE.yCoord = pt.getBlockY();
-        genericTE.zCoord = pt.getBlockZ();
-        genericTE.worldObj = world;
-        */ // handled by internal code
-
-        return genericTE;
-    }
-
     public static NBTTagCompound copyNbtData(TileEntity tile) {
         NBTTagCompound tag = new NBTTagCompound();
         tile.write(tag);