I'm trying to create a wrench function for my blocks. I'm trying to retrieve the tile's NBT via getTileData(). getTileData() always returns an empty tag. The tile retains the NBT data so long as the block is placed. I can verify this because the block is a solar panel that generates RF. It retains the RF data through logging out and restarting the client. I have implemented packet handling to send the server data to the client as well. Following are the relevant methods:

 

BlockSolarPanel#onBlockActivated

public boolean onBlockActivated(World worldIn, BlockPos pos, IBlockState state, EntityPlayer playerIn, EnumHand hand, ItemStack heldItem, EnumFacing side, float hitX, float hitY, float hitZ) {

	TileEntitySolarPanel te = getTE(worldIn, pos);
	if (te != null) {
		if (!playerIn.isSneaking()) {
			if (worldIn.isRemote) {
				GuiHandler.launchGui(Globals.GUINUM_SOLARPANEL, playerIn, worldIn, pos.getX(), pos.getY(), pos.getZ());
			}
		}
		else {
			BlockUtils.wrenchBlock(worldIn, pos, state, te);
		}
	}
	return true;
}

 

BlockSolarPanel#getTE

private TileEntitySolarPanel getTE(World worldIn, BlockPos pos) {
	return (TileEntitySolarPanel) BlockUtils.getTE(worldIn, pos);
}

 

BlockUtils#wrenchBlock

public static void wrenchBlock(World worldIn, BlockPos pos, IBlockState state, TileEntity te) {
	if (!worldIn.isRemote) {
		ItemStack blockStack = new ItemStack(Item.getItemFromBlock(worldIn.getBlockState(pos).getBlock()), 1);

		if (te.getBlockMetadata() > 0) {
			blockStack.setItemDamage(te.getBlockMetadata());
		}
		if (te.getTileData() != null) {
			NBTTagCompound nbt = te.getTileData();
			blockStack.setTagCompound(nbt);
		}
		EntityItem entityItem = new EntityItem(worldIn, pos.getX(), pos.getY(), pos.getZ(), blockStack);
		if (te != null) {
			worldIn.spawnEntityInWorld(entityItem);
			dropTEItems(worldIn, pos);
			worldIn.setBlockToAir(pos);
		}
	}
}

TileEntity#getTileData

is for storing external data on a

TileEntity

, it doesn't contain the

TileEntity

's own data.

 

Use

INBTSerializable#serializeNBT

(inherited by

TileEntity

) to write an

INBTSerializable

object to NBT.