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movegen: separate all captures (easier later handling)

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Bruno Raoult
2024-03-18 10:12:35 +01:00
parent dc916f5c56
commit b4cc87815b
1 changed files with 30 additions and 12 deletions
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42
src/move-gen.c
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@@ -189,40 +189,58 @@ int pos_gen_pseudomoves(pos_t *pos)
/* king - MUST BE FIRST ! */ /* king - MUST BE FIRST ! */
from = pos->king[us]; from = pos->king[us];
movebits = bb_king_moves(not_my_pieces, from); movebits = bb_king_moves(not_my_pieces, from);
bit_for_each64(to, tmp1, movebits) { bit_for_each64(to, tmp1, movebits & empty) {
moves[nmoves++] = move_make(from, to); moves[nmoves++] = move_make(from, to);
} }
bit_for_each64(to, tmp1, movebits & enemy_pieces) {
moves[nmoves++] = move_make_capture(from, to);
}
if (popcount64(pos->checkers) > 1) /* double check, we stop here */ if (popcount64(pos->checkers) > 1) /* double check, we stop here */
return (pos->moves.nmoves = nmoves); return (pos->moves.nmoves = nmoves);
/* sliding pieces */ /* sliding pieces */
bit_for_each64(from, tmp1, pos->bb[us][BISHOP]) { bit_for_each64(from, tmp1, pos->bb[us][BISHOP] | pos->bb[us][QUEEN]) {
movebits = hyperbola_bishop_moves(occ, from) & not_my_pieces; movebits = hyperbola_bishop_moves(occ, from) & not_my_pieces;
bit_for_each64(to, tmp2, movebits) { bit_for_each64(to, tmp2, movebits & empty) {
moves[nmoves++] = move_make(from, to); moves[nmoves++] = move_make(from, to);
} }
bit_for_each64(to, tmp2, movebits & enemy_pieces) {
moves[nmoves++] = move_make_capture(from, to);
}
} }
bit_for_each64(from, tmp1, pos->bb[us][ROOK]) { bit_for_each64(from, tmp1, pos->bb[us][ROOK] | pos->bb[us][QUEEN]) {
// printf("rook=%d/%s\n", from, sq_to_string(from)); // printf("rook=%d/%s\n", from, sq_to_string(from));
movebits = hyperbola_rook_moves(occ, from) & not_my_pieces; movebits = hyperbola_rook_moves(occ, from) & not_my_pieces;
bit_for_each64(to, tmp2, movebits) { bit_for_each64(to, tmp2, movebits & empty) {
moves[nmoves++] = move_make(from, to); moves[nmoves++] = move_make(from, to);
} }
bit_for_each64(to, tmp2, movebits & enemy_pieces) {
moves[nmoves++] = move_make_capture(from, to);
}
} }
/* TODO: remove this one, after movegen is validated */ /* TODO: remove this one, after movegen is validated */
bit_for_each64(from, tmp1, pos->bb[us][QUEEN]) { /*
movebits = hyperbola_queen_moves(occ, from) & not_my_pieces; * bit_for_each64(from, tmp1, pos->bb[us][QUEEN]) {
bit_for_each64(to, tmp2, movebits) { * movebits = hyperbola_queen_moves(occ, from) & not_my_pieces;
moves[nmoves++] = move_make(from, to); * bit_for_each64(to, tmp2, movebits & empty) {
} * moves[nmoves++] = move_make(from, to);
} * }
* bit_for_each64(to, tmp2, movebits & enemy_pieces) {
* moves[nmoves++] = move_make_capture(from, to);
* }
* }
*/
/* knight */ /* knight */
bit_for_each64(from, tmp1, pos->bb[us][KNIGHT]) { bit_for_each64(from, tmp1, pos->bb[us][KNIGHT]) {
movebits = bb_knight_moves(not_my_pieces, from); movebits = bb_knight_moves(not_my_pieces, from);
bit_for_each64(to, tmp2, movebits) { bit_for_each64(to, tmp2, movebits & empty) {
moves[nmoves++] = move_make(from, to); moves[nmoves++] = move_make(from, to);
} }
bit_for_each64(to, tmp2, movebits & enemy_pieces) {
moves[nmoves++] = move_make_capture(from, to);
}
} }
/* pawn: relative rank and files */ /* pawn: relative rank and files */