HCha/Stockfish
1
0
Fork 0
mirror of https://github.com/HChaZZY/Stockfish.git synced 2025-12-20 00:56:39 +08:00
Code Issues Packages Projects Releases Wiki Activity

Spread usage of pos.piece_moved()

Browse Source 
No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2012-02-13 09:17:56 +01:00
parent 4aadd1e401
commit 50edb7cd73
5 changed files with 11 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
src/position.cpp
View File

@@ -420,7 +420,7 @@ bool Position::move_attacks_square(Move m, Square s) const {
Bitboard occ, xray;
Square from = from_sq(m);
Square to = to_sq(m);
Piece piece = piece_on(from);
Piece piece = piece_moved(m);
assert(!square_is_empty(from));
@@ -452,7 +452,7 @@ bool Position::pl_move_is_legal(Move m, Bitboard pinned) const {
Color us = sideToMove;
Square from = from_sq(m);
assert(color_of(piece_on(from)) == us);
assert(color_of(piece_moved(m)) == us);
assert(piece_on(king_square(us)) == make_piece(us, KING));
// En passant captures are a tricky special case. Because they are rather
@@ -467,7 +467,7 @@ bool Position::pl_move_is_legal(Move m, Bitboard pinned) const {
Bitboard b = occupied_squares();
assert(to == ep_square());
assert(piece_on(from) == make_piece(us, PAWN));
assert(piece_moved(m) == make_piece(us, PAWN));
assert(piece_on(capsq) == make_piece(them, PAWN));
assert(piece_on(to) == NO_PIECE);
@@ -517,7 +517,7 @@ bool Position::is_pseudo_legal(const Move m) const {
Color them = ~sideToMove;
Square from = from_sq(m);
Square to = to_sq(m);
Piece pc = piece_on(from);
Piece pc = piece_moved(m);
// Use a slower but simpler function for uncommon cases
if (is_special(m))
@@ -608,11 +608,11 @@ bool Position::is_pseudo_legal(const Move m) const {
{
// In case of king moves under check we have to remove king so to catch
// as invalid moves like b1a1 when opposite queen is on c1.
if (type_of(piece_on(from)) == KING)
if (type_of(pc) == KING)
{
Bitboard b = occupied_squares();
b ^= from;
if (attackers_to(to_sq(m), b) & pieces(~us))
if (attackers_to(to, b) & pieces(~us))
return false;
}
else
@@ -625,7 +625,7 @@ bool Position::is_pseudo_legal(const Move m) const {
// Our move must be a blocking evasion or a capture of the checking piece
target = squares_between(checksq, king_square(us)) | checkers();
if (!(target & to_sq(m)))
if (!(target & to))
return false;
}
}
@@ -1224,13 +1224,10 @@ int Position::see_sign(Move m) const {
assert(is_ok(m));
Square from = from_sq(m);
Square to = to_sq(m);
// Early return if SEE cannot be negative because captured piece value
// is not less then capturing one. Note that king moves always return
// here because king midgame value is set to 0.
if (PieceValueMidgame[piece_on(to)] >= PieceValueMidgame[piece_on(from)])
if (PieceValueMidgame[piece_on(to_sq(m))] >= PieceValueMidgame[piece_moved(m)])
return 1;
return see(m);