TombStoneGUIHandler.java

package TombStone;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.world.World;
import cpw.mods.fml.common.network.IGuiHandler;

public class TombStoneGUIHandler implements IGuiHandler {
	//returns an instance of the Container you made earlier
	@Override
	public Object getServerGuiElement(int id, EntityPlayer player, World world, int x, int y, int z) {
		TileEntity tileEntity = world.getBlockTileEntity(x, y, z);
		if(tileEntity instanceof TombStoneTileEntity){
		        return new TombStoneContainer(player.inventory, (TombStoneTileEntity) tileEntity);
		}
		return null;
	}
	
	//returns an instance of the Gui you made earlier
	@Override
	public Object getClientGuiElement(int id, EntityPlayer player, World world, int x, int y, int z) {
		TileEntity tileEntity = world.getBlockTileEntity(x, y, z);
		if(tileEntity instanceof TombStoneTileEntity){
			return new TombStoneGUI(player.inventory, (TombStoneTileEntity) tileEntity);
		}
		return null;
	}
}