ItemGem.java

package emasher.items;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import emasher.EngineersToolbox;
import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.util.IIcon;

import java.util.List;

public class ItemGem extends Item {
	@SideOnly( Side.CLIENT )
	public IIcon[] textures;

	public ItemGem() {
		super();
		this.setCreativeTab( EngineersToolbox.tabItems() );
		setHasSubtypes( true );
	}
	
	
	@Override
	@SideOnly( Side.CLIENT )
	public IIcon getIconFromDamage( int damage ) {
		if( textures != null && damage >= 0 )
			return textures[damage];
		return null;
	}
	
	@Override
	public void registerIcons( IIconRegister ir ) {
		textures = new IIcon[3];
		
		textures[0] = ir.registerIcon( "eng_toolbox:gemEmery" );
		textures[1] = ir.registerIcon( "eng_toolbox:gemRuby" );
		textures[2] = ir.registerIcon( "eng_toolbox:gemSapphire" );
		
		this.itemIcon = textures[0];
	}
	
	@Override
	public String getUnlocalizedName( ItemStack itemstack ) {
		String name = "";
		switch(itemstack.getItemDamage()) {
			case 0:
				name = "e_gemEmery";
				break;
			case 1:
				name = "e_gemRuby";
				break;
			case 2:
				name = "e_gemSapphire";
				break;
		}
		return getUnlocalizedName() + "." + name;
	}
	
	@Override
	@SideOnly( Side.CLIENT )
	public void getSubItems( Item par1, CreativeTabs par2CreativeTabs, List par3List ) {
		for( int i = 0; i < 3; i++ ) par3List.add( new ItemStack( par1, 1, i ) );
	}

}