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new pos/bb funcs, legal(), better castling gen, etc. [see commit details]

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- new sq_pinners
- new pseudo_is_legal() (unfinished)
- improve castling pseudo move gen

- more position and lower level bitboard helper funcs:
  - pos_{_occ,between_occ,between_count,pinners}
  - bb_{rank,file,rel_rank,_sq_aligned,_sq_between)
- rename some bitboard globals
- replace bb ranks/files enums with defines (issue with clang)
  -> Need to find a way to use enum safely
- tests:
  - add common-test.h
  - new attack-test.c
This commit is contained in:
Bruno Raoult
2024-03-07 10:50:19 +01:00
parent b351d198b8
commit 87e7695873
20 changed files with 913 additions and 373 deletions
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11
src/move.h
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@@ -37,8 +37,8 @@
#define M_FLAGS_BEG 18
#define M_HAS_FLAGS mask(M_FLAGS_BEG + 0) /* probably unused */
#define M_CAPTURE mask(M_FLAGS_BEG + 1)
#define M_ENPASSANT mask(M_FLAGS_BEG + 2)
#define M_PROMOTION mask(M_FLAGS_BEG + 3)
#define M_EPASSANT mask(M_FLAGS_BEG + 2)
#define M_PROMOTE mask(M_FLAGS_BEG + 3)
#define M_CASTLE_K mask(M_FLAGS_BEG + 4)
#define M_CASTLE_Q mask(M_FLAGS_BEG + 5)
#define M_CHECK mask(M_FLAGS_BEG + 6) /* probably unknown/useless */
@@ -54,9 +54,14 @@ static inline move_t move_make(square_t from, square_t to)
return (to << 6) | from;
}
static inline move_t move_make_flags(square_t from, square_t to, int flags)
{
return move_make(from, to) | flags;
}
static inline move_t move_make_promote(square_t from, square_t to, piece_type_t piece)
{
return move_make(from, to) | M_ENPASSANT | (piece << 15);
return move_make(from, to) | M_PROMOTE | (piece << 15);
}
static inline square_t move_from(move_t move)