World Gen

    @Override
    public Chunk provideChunk( int x, int z )
    {
        long lx = ( long ) x;
        long lz = ( long ) z;

        short[] id = new short[ 16 * 256 * 16 ];
        byte[] meta = new byte[ 16 * 256 * 16 ];

        generateBase( id, meta );
        addCaves( x, z, id, meta );

        Chunk chunk = makeChunk( x, z, id, meta );
        chunk.generateSkylightMap();

        return chunk;
    }

    private Chunk makeChunk( int x, int z, short[] id, byte[] meta )
    {
        Chunk chunk = new Chunk( world, x, z );
        ExtendedBlockStorage[] storage = chunk.getBlockStorageArray();

        int height = id.length / ( 16 * 16 );
        for ( int ix = 0; ix < 16; ++ix )
        {
            for ( int iz = 0; iz < 16; ++iz )
            {
                for ( int iy = 0; iy < height; ++iy )
                {
                    int index = 0;
                    index |= ix << 12;
                    index |= iz << 8;
                    index |= iy;

                    int storageIndex = iy >> 4;
                    if( storage[ storageIndex ] == null )
                    {
                        storage[ storageIndex ] = new ExtendedBlockStorage( storageIndex << 4, false );
                    }

                    storage[ storageIndex ].setExtBlockID( ix, iy & 0xf, iz, id[ index ] );
                    storage[ storageIndex ].setExtBlockMetadata( ix, iy & 0xf, iz, meta[ index ] );
                }
            }
        }

        return chunk;
    }