Block

public class XPChest extends Block{

    public XPChest(){
        super(Material.ROCK);
        setCreativeTab(XPStorageMod.tabXPStorage);
        setHardness(50F);
        setResistance(6000F);
        setHarvestLevel("pickaxe", 3);
    }

    @Override
    public EnumBlockRenderType getRenderType(IBlockState state)
    {
        return EnumBlockRenderType.MODEL;
    }

    @Override
    public boolean hasTileEntity(){
        return true;
    }

    @Override
    public TileEntity createTileEntity(World world, IBlockState state){
        return new XPChestTileEntity();
    }

    @Override
    public boolean onBlockActivated(World worldIn, BlockPos pos, IBlockState state, EntityPlayer playerIn, EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ)
    {
        playerIn.openGui(XPStorageMod.instance, 0, worldIn, pos.getX(), pos.getY(), pos.getZ());
        return true;
    }

    @Override
    public void breakBlock(World worldIn, BlockPos pos, IBlockState state)
    {
        TileEntity tileEntity = worldIn.getTileEntity(pos);
        NBTTagCompound compound = tileEntity.getTileData();
        dropXpOnBlockBreak(worldIn, pos, compound.getInteger("expPoints"));
        super.breakBlock(worldIn, pos, state);
    }

}