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#include "tile.h"

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void SetMapExtraBits(TileIndex tile, byte bits)

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{

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	assert(tile < MapSize());

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	_map_extra_bits[tile >> 2] &= ~(3 << ((tile & 3) * 2));

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	_map_extra_bits[tile >> 2] |= (bits&3) << ((tile & 3) * 2);

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}

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uint GetMapExtraBits(TileIndex tile)

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{

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	assert(tile < MapSize());

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	return (_map_extra_bits[tile >> 2] >> (tile & 3) * 2) & 3;

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}