Color side_to_move() const;
// Bitboard representation of the position
- Bitboard occupied_squares() const;
+ Bitboard pieces() const;
Bitboard pieces(Color c) const;
Bitboard pieces(PieceType pt) const;
Bitboard pieces(PieceType pt, Color c) const;
// Bitboards
Bitboard byTypeBB[8]; // [pieceType]
Bitboard byColorBB[2]; // [color]
- Bitboard occupied;
// Piece counts
int pieceCount[2][8]; // [color][pieceType]
return sideToMove;
}
-inline Bitboard Position::occupied_squares() const {
- return occupied;
+inline Bitboard Position::pieces() const {
+ return byTypeBB[ALL_PIECES];
}
inline Bitboard Position::pieces(Color c) const {
}
inline bool Position::castle_impeded(CastleRight f) const {
- return occupied & castlePath[f];
+ return byTypeBB[ALL_PIECES] & castlePath[f];
}
inline Square Position::castle_rook_square(CastleRight f) const {
template<PieceType Pt>
inline Bitboard Position::attacks_from(Square s) const {
- return Pt == BISHOP || Pt == ROOK ? attacks_bb<Pt>(s, occupied_squares())
+ return Pt == BISHOP || Pt == ROOK ? attacks_bb<Pt>(s, pieces())
: Pt == QUEEN ? attacks_from<ROOK>(s) | attacks_from<BISHOP>(s)
: StepAttacksBB[Pt][s];
}
}
inline Bitboard Position::attacks_from(Piece p, Square s) const {
- return attacks_from(p, s, occupied);
+ return attacks_from(p, s, byTypeBB[ALL_PIECES]);
}
inline Bitboard Position::attackers_to(Square s) const {
- return attackers_to(s, occupied);
+ return attackers_to(s, byTypeBB[ALL_PIECES]);
}
inline Bitboard Position::checkers() const {