Added invalidateConvertedTile callback for parts

codechicken/multipart/MultipartGenerator.scala

@@ -74,6 +74,7 @@ object MultipartGenerator
         {
             if(converted)//perform client conversion
             {
+                ntile.partList(0).invalidateConvertedTile()
                 world.setBlock(pos.x, pos.y, pos.z, MultipartProxy.block.blockID, 0, 0)
                 world.setBlockTileEntity(pos.x, pos.y, pos.z, ntile)
                 PacketCustom.sendToChunk(new Packet53BlockChange(pos.x, pos.y, pos.z, world), world, pos.x>>4, pos.z>>4)

codechicken/multipart/TMultiPart.scala

@@ -240,6 +240,11 @@ abstract class TMultiPart
      * Called when this part is converted from a normal block/tile (only applicable if a converter has been registered)
      */
     def onConverted() = onAdded()
+    /**
+     * Called when this part is converted from a normal block/tile (only applicable if a converter has been registered) before the original tile has been replaced
+     * Use this to clear out things like inventory from the old tile.
+     */
+    def invalidateConvertedTile(){}
     /**
      * Called when this part has been moved without a save/load.
      */