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[1.7.2] Damage an ItemStack properly


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Hey Guys!


I wanted to create a crafting table which uses a special item to craft. The item has a durability of 64. One damage point should be added on crafting. The problem is that this doesn't work.






package com.bedrockminer.magicum.item;

import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.item.Item;
import net.minecraft.util.IIcon;

import com.bedrockminer.magicum.Main;
import com.bedrockminer.magicum.creative.Tabs;
import com.bedrockminer.magicum.element.Elements;

public class ItemEssence extends Item {

private final Elements element;
private IIcon iconDamage1;
private IIcon iconDamage2;

public ItemEssence(String unlocalizedName, Elements element) {
	this.setTextureName(Main.MODID + ":" + unlocalizedName);
	this.element = element;

public Elements getElement() {
	return this.element;

public IIcon getIconFromDamage(int damage) {
	if (damage > 2 * this.getMaxDamage() / 3)
		return this.iconDamage2;
	if (damage > this.getMaxDamage() / 3)
		return this.iconDamage1;
	return this.itemIcon;

public void registerIcons(IIconRegister reg) {
	this.itemIcon = reg.registerIcon(this.getIconString() + "_stage_0");
	this.iconDamage1 = reg.registerIcon(this.getIconString() + "_stage_1");
	this.iconDamage2 = reg.registerIcon(this.getIconString() + "_stage_2");





public void onPlayerCrafting(EntityPlayer player, ItemStack stack) {
	for (int i = 9; i < 12; i ++) {
		Elements element = Elements.None;
	   	if (i - 9 < this.neededElements.size())
	   		element = this.neededElements.get(i - 9);

	   	if (element != Elements.None) {
	   		this.te.getStackInSlot(i).damageItem(1, player);


The log "damage" is written in the console.

The method is called from onSlotChange of the corresponding slot.

public void onSlotChanged() {



I hope someone understands the problem...

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