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add bb_pawn_attacks[][], bb_shift()

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Bruno Raoult
2024-04-09 08:08:13 +02:00
parent 027aa2c132
commit f2ce20a504
7 changed files with 48 additions and 30 deletions
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20
src/bitboard.c
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@@ -27,7 +27,7 @@ bitboard_t bb_between_excl[64][64];
bitboard_t bb_between[64][64];
bitboard_t bb_line[64][64];
bitboard_t bb_knight[64], bb_king[64];
bitboard_t bb_knight[64], bb_king[64], bb_pawn_attacks[2][64];
/* vectors are clockwise from N */
static int knight_vector[] = {
@@ -105,7 +105,9 @@ void bitboard_init(void)
} ;
bitboard_t tmpbb[64][4] = { 0 };
/* 1) square to bitboard, and in-between-sq2-excluded */
/* 1) square to bitboard
* in-between, sq2 excluded
*/
for (square_t sq1 = A1; sq1 <= H8; ++sq1) {
bb_sq[sq1] = mask(sq1);
for (square_t sq2 = A1; sq2 <= H8; ++sq2)
@@ -151,18 +153,18 @@ void bitboard_init(void)
bb_line[sq1][sq2] = bb_sqdiag[sq1];
else if (bb_sqanti[sq1] == bb_sqanti[sq2])
bb_line[sq1][sq2] = bb_sqanti[sq1];
//if (bb_line[sq1][sq2]) {
// printf("bb_line[%d][%d] = %16lx\n", sq1, sq2, bb_line[sq1][sq2]);
//}
}
}
}
/* 3) knight and king moves */
/* 3) pawn, knight and king attacks
*/
for (square_t sq = A1; sq <= H8; ++sq) {
//rank_t r1 = sq_rank(sq);
//file_t f1 = sq_file(sq);
if (sq >= A2 && sq <= H7) {
bb_pawn_attacks[WHITE][sq] = pawn_attacks_bb(mask(sq), WHITE);
bb_pawn_attacks[BLACK][sq] = pawn_attacks_bb(mask(sq), BLACK);
}
for (int vec = 0; vec < 8; ++vec) {
int dst = sq + knight_vector[vec];
if (sq_ok(dst)) {