ItemEnderPearl.java

package net.minecraft.item;

import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.item.EntityEnderPearl;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.world.World;

public class ItemEnderPearl extends Item
{
    public ItemEnderPearl(int par1)
    {
        super(par1);
        this.maxStackSize = 16;
        this.setCreativeTab(CreativeTabs.tabMisc);
    }

    /**
     * Called whenever this item is equipped and the right mouse button is pressed. Args: itemStack, world, entityPlayer
     */
    public ItemStack onItemRightClick(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer)
    {
        if (par3EntityPlayer.capabilities.isCreativeMode)
        {
            return par1ItemStack;
        }
        else if (par3EntityPlayer.ridingEntity != null)
        {
            return par1ItemStack;
        }
        else
        {
            --par1ItemStack.stackSize;
            par2World.playSoundAtEntity(par3EntityPlayer, "random.bow", 0.5F, 0.4F / (itemRand.nextFloat() * 0.4F + 0.8F));

            if (!par2World.isRemote)
            {
                par2World.spawnEntityInWorld(new EntityEnderPearl(par2World, par3EntityPlayer));
            }

            return par1ItemStack;
        }
    }
}