001    package net.minecraft.src;
002    
003    public class ItemMapBase extends Item
004    {
005        protected ItemMapBase(int par1)
006        {
007            super(par1);
008        }
009    
010        /**
011         * false for all Items except sub-classes of ItemMapBase
012         */
013        public boolean isMap()
014        {
015            return true;
016        }
017    
018        /**
019         * returns null if no update is to be sent
020         */
021        public Packet createMapDataPacket(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer)
022        {
023            return null;
024        }
025    }