1 /* $Id$ */

     2 

     3 #ifndef  TRACK_DIR_HPP

     4 #define  TRACK_DIR_HPP

     5 

     6 EXTERN_C_BEGIN

     7 #include "../tile.h"

     8 #include "../openttd.h"

     9 #include "../map.h"

    10 #include "../rail.h"

    11 EXTERN_C_END

    12 

    13 /** Helpers to allow to work with enum as with type safe bit set in C++ */

    14 #define DECLARE_ENUM_AS_BIT_MASK(mask_t) \

    15 	FORCEINLINE mask_t operator | (mask_t m1, mask_t m2) {return (mask_t)((int)m1 | m2);} \

    16 	FORCEINLINE mask_t operator & (mask_t m1, mask_t m2) {return (mask_t)((int)m1 & m2);} \

    17 	FORCEINLINE mask_t operator ^ (mask_t m1, mask_t m2) {return (mask_t)((int)m1 ^ m2);} \

    18 	FORCEINLINE mask_t& operator |= (mask_t& m1, mask_t m2) {m1 = m1 | m2; return m1;} \

    19 	FORCEINLINE mask_t& operator &= (mask_t& m1, mask_t m2) {m1 = m1 & m2; return m1;} \

    20 	FORCEINLINE mask_t& operator ^= (mask_t& m1, mask_t m2) {m1 = m1 ^ m2; return m1;} \

    21 	FORCEINLINE mask_t operator ~(mask_t m) {return (mask_t)(~(int)m);}

    22 

    23 /** probably redundant enum combining operators (as we have conversion functions) */

    24 #define DECLARE_ENUM_AS_BIT_INDEX(idx_t, mask_t) \

    25 	FORCEINLINE mask_t operator << (int m, idx_t i) {return (mask_t)(m << (int)i);} \

    26 	FORCEINLINE mask_t operator << (mask_t m, int i) {return (mask_t)(((int)m) << i);} \

    27 	FORCEINLINE mask_t operator >> (mask_t m, int i) {return (mask_t)(((int)m) >> i);}

    28 

    29 DECLARE_ENUM_AS_BIT_MASK(TrackBits);

    30 DECLARE_ENUM_AS_BIT_INDEX(Track, TrackBits);

    31 

    32 DECLARE_ENUM_AS_BIT_MASK(TrackdirBits);

    33 DECLARE_ENUM_AS_BIT_INDEX(Trackdir, TrackdirBits);

    34 

    35 #endif /* TRACK_DIR_HPP */