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add hyperbola-quintessence.[ch]}, rank move gen, + file/rook/queen

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Bruno Raoult
2024-02-15 10:15:13 +01:00
parent bc28a900be
commit 403e625cbe
8 changed files with 297 additions and 139 deletions
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73
src/board.h
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@@ -18,16 +18,22 @@
#include "chessdefs.h"
/* a square is defined as
* rrrfff
*/
#define SQ_FILEMASK (007) /* warning, octal */
#define SQ_RANKMASK (070)
typedef enum {
_SSQUARE_ = -1, /* force signed enum */
A1 = 0, B1, C1, D1, E1, F1, G1, H1,
A2, B2, C2, D2, E2, F2, G2, H2,
A3, B3, C3, D3, E3, F3, G3, H3,
A4, B4, C4, D4, E4, F4, G4, H4,
A5, B5, C5, D5, E5, F5, G5, H5,
A6, B6, C6, D6, E6, F6, G6, H6,
A7, B7, C7, D7, E7, F7, G7, H7,
A8, B8, C8, D8, E8, F8, G8, H8,
A2, B2, C2, D2, E2, F2, G2, H2,
A3, B3, C3, D3, E3, F3, G3, H3,
A4, B4, C4, D4, E4, F4, G4, H4,
A5, B5, C5, D5, E5, F5, G5, H5,
A6, B6, C6, D6, E6, F6, G6, H6,
A7, B7, C7, D7, E7, F7, G7, H7,
A8, B8, C8, D8, E8, F8, G8, H8,
SQUARE_MAX = 64,
SQUARE_NONE = 64
} square_t;
@@ -71,65 +77,26 @@ static __always_inline square_t sq_make(file_t file, rank_t rank)
}
static __always_inline file_t sq_file(square_t square)
{
return square & 7;
return square & SQ_FILEMASK;
}
static __always_inline rank_t sq_rank(square_t square)
{
return square >> 3;
}
#define sq_ok(sq) ((sq) >= A1 && (sq) <= H8)
#define sq_coord_ok(c) ((c) >= 0 && (c) < 8)
/* Chebyshev distance: https://www.chessprogramming.org/Distance */
/* Chebyshev distance: max( |r2 - r1|, |f2 - f1| )
* See: https://www.chessprogramming.org/Distance
*/
#define sq_dist(sq1, sq2) (max(abs(sq_file(sq2) - sq_file(sq1)), \
abs(sq_rank(sq2) - sq_rank(sq1))))
/* Manhattan distance */
/* Manhattan distance: |r2 - r1| + |f2 - f1|
*/
#define sq_manh(sq1, sq2) (abs(sq_file(sq2) - sq_file(sq1)) + \
abs(sq_rank(sq2) - sq_rank(sq1)))
// while the orthogonal Manhattan-Distance is the sum of both absolute rank- and file-distance distances.
//Dtaxi = |r2 - r1| + |f2 - f1|
// Chebyshev Distance
//#include "piece.h"
/* definitions for 0x88 representation
*/
//#define SQ88(f, r) (((r) << 4) | (f)) /* from rank,file to sq88 */
//#define F88(s) ((s) & 0x0f) /* from sq88 to file */
//#define R88(s) ((s) >> 4) /* from sq88 to rank */
//#define SETF88(s, r) ((s) &= 0xf0, (s) |= (r))
//#define SETR88(s, f) ((s) &= 0x0f, (s) |= (f)<<4)
//#define SQ88_NOK(s) ((s) & 0x88) /* invalid square */
//#define SQ88_OK(s) (!SQ88_NOK(s))
/* definitions for bitboard representation
*/
//#define BB(f, r) (1ULL << (8 * (r) + (f))) /* from rank,file to bitboard */
//#define SQ88_2_BB(s) (BB(F88(s), R88(s))) /* from sq88 to bitboard */
//#define FILEBB(b) ((b) % 8) /* from sq88 to file */
//#define RANKBB(b) ((b) / 8) /* from sq88 to rank */
//#define SQ88_NOK(s) ((s) & 0x88) /* invalid square */
//#define SQ88_OK(s) (!SQ88_NOK(s))
/* from human to machine
*/
/*
* #define C2FILE(c) (tolower(c) - 'a')
* #define C2RANK(c) (tolower(c) - '1')
* /\* from machine to human
* *\/
* #define FILE2C(f) ((f) + 'a')
* #define RANK2C(r) ((r) + '1')
*/
extern const char *sq_string(const square_t sq);
#endif /* BOARD_H */