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Use do_move_bb() in move_attacks_square()

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No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2010-10-10 08:56:07 +02:00
parent d440ddb487
commit 5dfbbb79be
1 changed files with 6 additions and 6 deletions
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12
src/position.cpp
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@@ -523,6 +523,7 @@ bool Position::move_attacks_square(Move m, Square s) const {
assert(move_is_ok(m)); assert(move_is_ok(m));
assert(square_is_ok(s)); assert(square_is_ok(s));
Bitboard occ, xray;
Square f = move_from(m), t = move_to(m); Square f = move_from(m), t = move_to(m);
assert(square_is_occupied(f)); assert(square_is_occupied(f));
@@ -531,12 +532,11 @@ bool Position::move_attacks_square(Move m, Square s) const {
return true; return true;
// Move the piece and scan for X-ray attacks behind it // Move the piece and scan for X-ray attacks behind it
Bitboard occ = occupied_squares(); occ = occupied_squares();
Color us = color_of_piece_on(f); do_move_bb(&occ, make_move_bb(f, t));
clear_bit(&occ, f); xray = ( (rook_attacks_bb(s, occ) & pieces(ROOK, QUEEN))
set_bit(&occ, t); |(bishop_attacks_bb(s, occ) & pieces(BISHOP, QUEEN)))
Bitboard xray = ( (rook_attacks_bb(s, occ) & pieces(ROOK, QUEEN)) & pieces_of_color(color_of_piece_on(f));
|(bishop_attacks_bb(s, occ) & pieces(BISHOP, QUEEN))) & pieces_of_color(us);
// If we have attacks we need to verify that are caused by our move // If we have attacks we need to verify that are caused by our move
// and are not already existent ones. // and are not already existent ones.