Square initial_kr_square(Color c) const;
Square initial_qr_square(Color c) const;
- // Attack bitboards
- Bitboard sliding_attacks(Square s, Direction d) const;
- Bitboard ray_attacks(Square s, SignedDirection d) const;
- Bitboard pawn_attacks(Color c, Square s) const;
-
- template<PieceType>
- Bitboard piece_attacks(Square s) const;
-
// Bitboards for pinned pieces and discovered check candidates
Bitboard discovered_check_candidates(Color c) const;
Bitboard pinned_pieces(Color c, Bitboard& p) const;
Bitboard pinned_pieces(Color c) const;
- // Checking pieces
+ // Checking pieces and under check information
Bitboard checkers() const;
+ bool is_check() const;
// Piece lists
Square piece_list(Color c, PieceType pt, int index) const;
- // Attack information for a given square
- bool square_is_attacked(Square s, Color c) const;
+ // Attack information to a given square
Bitboard attacks_to(Square s) const;
Bitboard attacks_to(Square s, Color c) const;
- bool is_check() const;
- bool pawn_attacks_square(Color c, Square f, Square t) const;
-
- template<PieceType>
- Bitboard piece_attacks_square(Square f, Square t) const; // Dispatch at compile-time
+ template<PieceType> Bitboard piece_attacks(Square s) const;
+ Bitboard pawn_attacks(Square s, Color c) const;
+ // Attack information to a given square from another given square
+ template<PieceType> Bitboard piece_attacks_square(Square f, Square t) const; // Dispatch at compile-time
bool piece_attacks_square(Piece p, Square f, Square t) const; // Dispatch at run-time
+ bool pawn_attacks_square(Square f, Square t, Color c) const;
// Properties of moves
bool pl_move_is_legal(Move m) const;
// Position consistency check, for debugging
bool is_ok(int* failedStep = NULL) const;
- // Static member functions:
+ // Static member functions
static void init_zobrist();
static void init_piece_square_tables();
return relative_square(c, make_square(initialQRFile, RANK_1));
}
-inline Bitboard Position::pawn_attacks(Color c, Square s) const {
+inline Bitboard Position::pawn_attacks(Square s, Color c) const {
return StepAttackBB[piece_of_color_and_type(c, PAWN)][s];
}
return st->checkersBB != EmptyBoardBB;
}
-inline bool Position::pawn_attacks_square(Color c, Square f, Square t) const {
- return bit_is_set(pawn_attacks(c, f), t);
+inline bool Position::pawn_attacks_square(Square f, Square t, Color c) const {
+ return bit_is_set(pawn_attacks(f, c), t);
}
template<PieceType Piece>
return attacks_to(s) & pieces_of_color(c);
}
-inline bool Position::square_is_attacked(Square s, Color c) const {
-
- return attacks_to(s, c) != EmptyBoardBB;
-}
-
inline bool Position::pawn_is_passed(Color c, Square s) const {
return !(pieces(PAWN, opposite_color(c)) & passed_pawn_mask(c, s));
}