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#include "functions.h"

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uint _map_log_x;

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uint _map_log_y;

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byte   *_map_type_and_height = NULL;

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byte   *_map_owner           = NULL;

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uint16 *_map2                = NULL;

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byte   *_map3_lo             = NULL;

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byte   *_map3_hi             = NULL;

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byte   *_map5                = NULL;

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byte   *_map_extra_bits      = NULL;

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void InitMap(uint log_x, uint log_y)

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{

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	uint map_size;

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	assert(log_x <= 15 && log_y <= 15);

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	_map_log_x = log_x;

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	_map_log_y = log_y;

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	map_size = MapSize();

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	_map_type_and_height =

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		realloc(_map_type_and_height, map_size * sizeof(_map_type_and_height[0]));

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	_map_owner = realloc(_map_owner, map_size * sizeof(_map_owner[0]));

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	_map2      = realloc(_map2,      map_size * sizeof(_map2[0]));

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	_map3_lo   = realloc(_map3_lo,   map_size * sizeof(_map3_lo[0]));

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	_map3_hi   = realloc(_map3_hi,   map_size * sizeof(_map3_hi[0]));

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	_map5      = realloc(_map5,      map_size * sizeof(_map5[0]));

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	_map_extra_bits =

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		realloc(_map_extra_bits, map_size * sizeof(_map_extra_bits[0] / 4));

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	// XXX TODO handle memory shortage more gracefully

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	if (_map_type_and_height == NULL ||

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			_map_owner           == NULL ||

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			_map2                == NULL ||

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			_map3_lo             == NULL ||

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			_map3_hi             == NULL ||

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			_map5                == NULL ||

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			_map_extra_bits      == NULL)

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		error("Failed to allocate memory for the map");

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}