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TileEntity inventory without using IInventory?


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I see a few of problems,


You're storing the ItemStack's NBTTagCompound twice.

You never call markDirty()

You never do null checks.

You do a lot of stuff on both Sides, which can cause one Side to have the wrong information.

You are setting the player's held Item, without making sure it's empty first.

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This is the Itemstack writeToNBT method:


     * Write the stack fields to a NBT object. Return the new NBT object.
    public NBTTagCompound writeToNBT(NBTTagCompound p_77955_1_)
        p_77955_1_.setShort("id", (short)Item.getIdFromItem(this.field_151002_e));
        p_77955_1_.setByte("Count", (byte)this.stackSize);
        p_77955_1_.setShort("Damage", (short)this.itemDamage);

        if (this.stackTagCompound != null)
            p_77955_1_.setTag("tag", this.stackTagCompound);

        return p_77955_1_;


It checks and stores the stackTagCompound, which you store a second time in your writeToNBT:


			nbt.setTag("ItemStack"+i,NBT); // Stores the NBT.stackTagCompound Tag
		nbt.setTag("ItemStackData"+i, inv[i].stackTagCompound); // Duplicate Tag




markDirty() is a method on TileEntity. It ensures that the TileEntity is saved. Even if Minecraft would normally not save it, for example, when no blocks have changed.

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ok cool I got it to work. I changed my code to:

package com.example.gammacraft.TileEntity;

import net.minecraft.entity.item.EntityItem;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.network.NetworkManager;
import net.minecraft.network.Packet;
import net.minecraft.network.play.server.S35PacketUpdateTileEntity;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.world.World;

public class MultiToolModifierTileEntity extends TileEntity {

public ItemStack[] inv;

public MultiToolModifierTileEntity() {
	inv=new ItemStack[10];

public Packet getDescriptionPacket() {
        NBTTagCompound nbtTag = new NBTTagCompound();
        return new S35PacketUpdateTileEntity(this.xCoord, this.yCoord, this.zCoord, 1, nbtTag);

public void onDataPacket(NetworkManager net, S35PacketUpdateTileEntity packet) {

public void writeToNBT(NBTTagCompound nbt){

	for(int i =0;i!=inv.length;i++){
		NBTTagCompound NBT = new NBTTagCompound();


public void readFromNBT(NBTTagCompound nbt){

	for(int i =0;i!=inv.length;i++){
		NBTTagCompound itemstack = nbt.getCompoundTag("ItemStack"+i);

		}catch(Exception e){





The proud(ish) developer of Ancients

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