ItemKey.java

package com.tinkeracademy.rvergis;

import java.util.List;

import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.entity.RenderItem;
import net.minecraft.client.resources.model.ModelBakery;
import net.minecraft.client.resources.model.ModelResourceLocation;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.util.MathHelper;
import net.minecraftforge.fml.common.registry.GameRegistry;

public class ItemKey extends Item {
	
	private static final String ORANGE_KEY = "orange_key";
	private static final String GREEN_KEY = "green_key";
    private static final String RED_KEY = "red_key";
    private static final String PURPLE_KEY = "purple_key";
    private static final String YELLOW_KEY = "yellow_key";
    
    private String name = "key";
	private String[] names = { ORANGE_KEY, GREEN_KEY, RED_KEY, PURPLE_KEY, YELLOW_KEY };
	
	public ItemKey() {
		GameRegistry.registerItem(this, name);
		setUnlocalizedName(MyItemsMod.MODID + "_" + name);
		setHasSubtypes(true);
		setCreativeTab(CreativeTabs.tabMisc);
		ModelBakery.addVariantName(this, MyItemsMod.MODID + ":" + ORANGE_KEY, MyItemsMod.MODID + ":" + GREEN_KEY,
				MyItemsMod.MODID + ":" + RED_KEY, MyItemsMod.MODID + ":" + PURPLE_KEY,
				MyItemsMod.MODID + ":" + YELLOW_KEY);
	}

	public void init() {
		registerKey((ItemKey) this, 0, ORANGE_KEY);
		registerKey((ItemKey) this, 1, GREEN_KEY);
		registerKey((ItemKey) this, 2, RED_KEY);
		registerKey((ItemKey) this, 3, PURPLE_KEY);
		registerKey((ItemKey) this, 4, YELLOW_KEY);

	}
	
	@Override
	public String getUnlocalizedName(ItemStack stack) {
		int metadata = MathHelper.clamp_int( stack.getItemDamage(), 0, 15); 
		return super.getUnlocalizedName() + "_" + names[ metadata];
	}
	
	@Override
	public void getSubItems(Item itemIn, CreativeTabs tab, List subItems) {
		for (int i = 0; i < names.length; i++) {
			subItems.add(new ItemStack(itemIn, 1, i));
		}
	}

	public String getName() {
		return this.name;
	}

	
	public void registerKey(ItemKey key, int metadata, String fileName) {
		
		RenderItem renderItem = Minecraft.getMinecraft().getRenderItem();
		renderItem.getItemModelMesher().register(key, metadata, 
				new ModelResourceLocation(MyItemsMod.MODID + ':' + fileName, "inventory"));
		
	}
	
	
}