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/* $Id$ */
#include "town.h"
static inline int GetHouseType(TileIndex t)
{
assert(IsTileType(t, MP_HOUSE));
return _m[t].m4;
}
static inline uint GetTownIndex(TileIndex t)
{
assert(IsTileType(t, MP_HOUSE) || IsTileType(t, MP_STREET)); // XXX incomplete
return _m[t].m2;
}
static inline Town* GetTownByTile(TileIndex t)
{
return GetTown(GetTownIndex(t));
}
static inline void MakeHouseTile(TileIndex t, TownID tid, byte counter, byte stage, byte type)
{
assert(IsTileType(t, MP_CLEAR));
SetTileType(t, MP_HOUSE);
_m[t].m1 = 0;
_m[t].m2 = tid;
SB(_m[t].m3, 6, 2, stage);
_m[t].m4 = type;
SB(_m[t].m5, 0, 2, counter);
MarkTileDirtyByTile(t);
}
enum {
TWO_BY_TWO_BIT = 2, ///< House is two tiles in X and Y directions
ONE_BY_TWO_BIT = 1, ///< House is two tiles in Y direction
TWO_BY_ONE_BIT = 0, ///< House is two tiles in X direction
};
static inline void MakeTownHouse(TileIndex t, TownID tid, byte counter, byte stage, byte size, byte type)
{
MakeHouseTile(t, tid, counter, stage, type);
if (HASBIT(size, TWO_BY_TWO_BIT) || HASBIT(size, ONE_BY_TWO_BIT)) MakeHouseTile(t + TileDiffXY(0, 1), tid, counter, stage, ++type);
if (HASBIT(size, TWO_BY_TWO_BIT) || HASBIT(size, TWO_BY_ONE_BIT)) MakeHouseTile(t + TileDiffXY(1, 0), tid, counter, stage, ++type);
if (HASBIT(size, TWO_BY_TWO_BIT)) MakeHouseTile(t + TileDiffXY(1, 1), tid, counter, stage, ++type);
}
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