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tiles[ 0][ 0][constant][type] = type_data[ 0] tiles[ 1][ 0][constant][type] = type_data[ 16] ... tiles[13][15][constant][type] = type_data[223] tiles[14][15][constant][type] = type_data[239] tiles[15][15][constant][type] = type_data[255]
@type_data [00,01,02,03] ... | | | | |03|13|23|33| | | +--+--+--+--+--+--+--+--+--+--+-- | | | | | | | | | | |