Method getStateId

src/main/java/net/minecraft/block/Block.java:162–166

Get a unique ID for the given BlockState, containing both BlockID and metadata

(IBlockState state)

     * Get a unique ID for the given BlockState, containing both BlockID and metadata
     */
    public static int getStateId(IBlockState state)
    {
        Block block = state.getBlock();
        return getIdFromBlock(block) + (block.getMetaFromState(state) << 12);
    }

    public static Block getBlockById(int id)
    {