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Rename piece_attacks() in piece_attacks_from()

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It is a bit longer but much easier to understand especially
for people new to the sources. I remember it was not trivial
for me to understand the returned attack bitboard refers to
attacks launched from the given square and not attacking the
given square.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2009-09-20 10:26:54 +01:00
parent f74f42b298
commit 6845397c5c
7 changed files with 80 additions and 79 deletions
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22
src/position.h
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@@ -195,12 +195,12 @@ public:
// Piece lists
Square piece_list(Color c, PieceType pt, int index) const;
// Attack information to a given square
// Information about attacks to or from a given square
Bitboard attackers_to(Square s) const;
Bitboard attackers_to(Square s, Color c) const;
Bitboard piece_attacks(Piece p, Square s) const;
Bitboard pawn_attacks(Square s, Color c) const;
template<PieceType> Bitboard piece_attacks(Square s) const;
Bitboard piece_attacks_from(Piece p, Square s) const;
Bitboard pawn_attacks_from(Square s, Color c) const;
template<PieceType> Bitboard piece_attacks_from(Square s) const;
// Properties of moves
bool pl_move_is_legal(Move m) const;
@@ -433,33 +433,33 @@ inline Square Position::initial_qr_square(Color c) const {
return relative_square(c, make_square(initialQRFile, RANK_1));
}
inline Bitboard Position::pawn_attacks(Square s, Color c) const {
inline Bitboard Position::pawn_attacks_from(Square s, Color c) const {
return StepAttackBB[piece_of_color_and_type(c, PAWN)][s];
}
template<PieceType Piece> // Knight and King
inline Bitboard Position::piece_attacks(Square s) const {
inline Bitboard Position::piece_attacks_from(Square s) const {
return StepAttackBB[Piece][s];
}
template<>
inline Bitboard Position::piece_attacks<PAWN>(Square s) const {
inline Bitboard Position::piece_attacks_from<PAWN>(Square s) const {
return StepAttackBB[WP][s] | StepAttackBB[BP][s];
}
template<>
inline Bitboard Position::piece_attacks<BISHOP>(Square s) const {
inline Bitboard Position::piece_attacks_from<BISHOP>(Square s) const {
return bishop_attacks_bb(s, occupied_squares());
}
template<>
inline Bitboard Position::piece_attacks<ROOK>(Square s) const {
inline Bitboard Position::piece_attacks_from<ROOK>(Square s) const {
return rook_attacks_bb(s, occupied_squares());
}
template<>
inline Bitboard Position::piece_attacks<QUEEN>(Square s) const {
return piece_attacks<ROOK>(s) | piece_attacks<BISHOP>(s);
inline Bitboard Position::piece_attacks_from<QUEEN>(Square s) const {
return piece_attacks_from<ROOK>(s) | piece_attacks_from<BISHOP>(s);
}
inline Bitboard Position::checkers() const {