My goal is to create a working handheld furnace. I've found workarounds to making the entity tick (the items onUpdate() method), but the tile entity is unable to read the item stacks in it's slot. I don't even know what to look for as this problem seems extremely weird to have.  Any help would be appreciated.

Here's the item code:

package com.mardiff.handheld.item;

import net.minecraft.block.BlockFurnace;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.world.World;
import net.minecraft.world.chunk.Chunk;

import com.mardiff.handheld.HandheldBase;
import com.mardiff.handheld.inventory.ContainerHandheldFurnace;
import com.mardiff.handheld.tileentity.TileHandheldFurnace;

public class ItemHandheldFurnace extends Item {
public ItemHandheldFurnace(int par1) {
	super(par1);
	setCreativeTab(CreativeTabs.tabMisc);
	setMaxStackSize(1);
	setTextureName("furnace_front_on");
}

@Override
/**
 * Called whenever this item is equipped and the right mouse button is pressed. Args: itemStack, world, entityPlayer
 */
public ItemStack onItemRightClick(ItemStack itemstack, World world, EntityPlayer player)
{
	System.out.println("clicked");
	player.openGui(HandheldBase.instance, 0, world, (int)player.posX, (int)player.posY, (int)player.posZ);
	return itemstack;
}

@Override
public void onUpdate(ItemStack par1ItemStack, World par2World, Entity par3Entity, int par4, boolean par5) {

	if(par3Entity != null && par3Entity instanceof EntityPlayer) {

		EntityPlayer player = (EntityPlayer)par3Entity;

		if(player.openContainer instanceof ContainerHandheldFurnace) {
			TileHandheldFurnace tilehandheld = new TileHandheldFurnace();
			tilehandheld.beginUpdating();
			tilehandheld.updateEntity();
			tilehandheld.validate();
		}
	}
}
}

 

I realize that making a new tile entity every update may be the problem, but then how would I get the entity to randomly tick (since tile entities don't tick unless they're in block form)?

 

TileHandheldFurnace tilehandheld = new TileHandheldFurnace();

 

Uh.

You're going to want to approach this differently.

You don't need the TileEntity at all.

The vanilla furnace use a TileEntity since it is a Block.

But an Item doesn't need a TileEntity to work. You can store all the extra data in its ItemStack NBTTagCompound.

Use ItemWorldSaverData that is the TileEntity for the item.

Also it has a NBTCall.

Thanks a lot guys. I actually didn't want NBT so it could be balanced, but anyways it works great now!