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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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5
src/attack.c
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@@ -43,9 +43,6 @@ bool sq_is_attacked(const pos_t *pos, const bitboard_t occ, const square_t sq, c
bitboard_t sqbb = mask(sq);
color_t opp = OPPONENT(c);
//pos_print_raw(pos, 1);
/* bishop / queen */
if (hyperbola_bishop_moves(occ, sq) & (pos->bb[c][BISHOP] | pos->bb[c][QUEEN]))
return true;
@@ -55,7 +52,7 @@ bool sq_is_attacked(const pos_t *pos, const bitboard_t occ, const square_t sq, c
return true;
/* pawn */
if ((pawn_shift_upleft(sqbb, opp) | pawn_shift_upright(sqbb, opp)) & pos->bb[c][PAWN])
if (bb_pawn_attacks[opp][sq] & pos->bb[c][PAWN])
return true;
/* knight */