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37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
/* $Id$ */
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#ifndef CLEAR_H
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#define CLEAR_H
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#include "macros.h"
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/* ground type, m5 bits 2...4
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* valid densities (bits 0...1) in comments after the enum
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*/
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typedef enum ClearGround {
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CL_GRASS = 0, // 0-3
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CL_ROUGH = 1, // 3
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CL_ROCKS = 2, // 3
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CL_FIELDS = 3, // 3
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CL_SNOW = 4, // 0-3
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CL_DESERT = 5 // 1,3
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} ClearGround;
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static inline ClearGround GetClearGround(TileIndex t) { return GB(_m[t].m5, 2, 3); }
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static inline bool IsClearGround(TileIndex t, ClearGround ct) { return GetClearGround(t) == ct; }
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static inline void AddClearDensity(TileIndex t, int d) { _m[t].m5 += d; }
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static inline uint GetClearDensity(TileIndex t) { return GB(_m[t].m5, 0, 2); }
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static inline void AddClearCounter(TileIndex t, int c) { _m[t].m5 += c << 5; }
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static inline uint GetClearCounter(TileIndex t) { return GB(_m[t].m5, 5, 3); }
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static inline void SetClearCounter(TileIndex t, uint c) { SB(_m[t].m5, 5, 3, c); }
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/* Sets type and density in one go, also sets the counter to 0 */
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static inline void SetClearGroundDensity(TileIndex t, ClearGround type, uint density)
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{
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_m[t].m5 = 0 << 5 | type << 2 | density;
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}
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#endif
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