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[Solved!][1.7.10] NBT not working


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I am trying to store the orientation of a certain object, I have gotten it being able to store individual orientations and have them point in various directions but when I try to save it for next time it never happens, this is the code that I have used which works in other blocks I have (it currently does nothing), why does it not work?


package aerosteam.tileentitty;

import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.tileentity.TileEntity;

public class TileEntitySteamPipe extends TileEntity {
public int orientation;

public TileEntitySteamPipe(){


public void readFromNBT(NBTTagCompound nbt){
	int q=1/0;

public void writeToNBT(NBTTagCompound nbt){
	int q=1/0;


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int q=1/0;

that should error every time (is it)



I also recommend putting  @Override  on the line before the overridden methods


I also believe you need to do one of these


extends BlockContainer

implements ITileEntityProvider


in your block class

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int q=1/0;

that should error every time (is it)

No, that is the issue, I place it there to see IF there is an error...it never happens.


I also recommend putting    @Override  on the line before the overridden methods

Where exacly?


Here is my code for the block class itself with the stuff, I still get nothing, even with the division by zero it never crashes telling me it doesn't even REACH those parts.

package aerosteam.devices;

import cpw.mods.fml.common.network.internal.FMLNetworkHandler;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import aerosteam.AeroSteam;
import aerosteam.tileentitty.TileEntityBoiler;
import aerosteam.tileentitty.TileEntitySteamPipe;
import net.minecraft.block.Block;
import net.minecraft.block.BlockContainer;
import net.minecraft.block.ITileEntityProvider;
import net.minecraft.block.material.Material;
import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.entity.EntityLiving;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Items;
import net.minecraft.item.ItemStack;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.ChatComponentText;
import net.minecraft.util.IChatComponent;
import net.minecraft.util.MathHelper;
import net.minecraft.world.World;

public class DeviceSteamPipe extends BlockContainer implements ITileEntityProvider{

public DeviceSteamPipe(int connection) {
public void onBlockAdded(World world, int x, int y, int z) {
	super.onBlockAdded(world, x, y, z);
	this.setDefaultOrientation(world, x, y, z);
public void onBlockPlacedBy(World world, int x, int y, int z, EntityLivingBase entityplayer,ItemStack itemstack){
	int l = MathHelper.floor_double((double)(entityplayer.rotationYaw * 4.0F/360.F)+0.5D) & 3 ;
	int t = MathHelper.floor_double((double)(entityplayer.rotationPitch * 4.0F/360.F)+0.5D) & 3;
	TileEntitySteamPipe tile = (TileEntitySteamPipe) world.getTileEntity(x, y, z);
	if (t==0){
		if (l==1 || l==3){
		}else if(l==0 || l==2){
private void setDefaultOrientation(World world, int x, int y, int z){
public boolean 	onBlockActivated(World world, int x, int y, int z, EntityPlayer player, int side, float hitX, float hitY, float hitZ){
	if (!world.isRemote){
		TileEntitySteamPipe tile = (TileEntitySteamPipe) world.getTileEntity(x, y, z);
		player.addChatMessage(new ChatComponentText("Metadata:" + tile.orientation));
	return true;
public int getRenderType(){
	return -1;

public boolean isOpaqueCube(){
	return false;
public boolean renderAsNormalBlock(){
	return false;
public TileEntity createNewTileEntity(World p_149915_1_, int p_149915_2_) {
	return new TileEntitySteamPipe();

public void registerBlockIcons(IIconRegister iconregister){
	this.blockIcon = iconregister.registerIcon(AeroSteam.MODID + ":" + "SteamPipeStraight");


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There are probably a couple of problems.


For example, you need to override

onDataPacket and getDescriptionPacket

for the TileEntity.


This example code for 1.6.4 shows you a working example.



Should still work in 1.7 with some tweaking (i.e. Packet name change)


The @Override question - something like this


    public void readFromNBT(NBTTagCompound tag) {


(Google @Override to see why it's important)


A better way to track your program flow, instead of q = 1/0, is to use eg



I'm not sure why your q=1/0 appears to show that this code isn't reached.  Perhaps your compiler is optimising it out, and that code actually is executed.  Try the System.out method instead and see if that's really the problem.



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