explicit CheckInfo(const Position&);
Bitboard dcCandidates;
+ Bitboard pinned;
Bitboard checkSq[8];
- Square ksq;
};
/// Castle rights, encoded as bit fields
// The piece on a given square
Piece piece_on(Square s) const;
- PieceType type_of_piece_on(Square s) const;
- Color color_of_piece_on(Square s) const;
bool square_is_empty(Square s) const;
bool square_is_occupied(Square s) const;
- Value midgame_value_of_piece_on(Square s) const;
- Value endgame_value_of_piece_on(Square s) const;
// Side to move
Color side_to_move() const;
// Properties of moves
bool pl_move_is_legal(Move m, Bitboard pinned) const;
bool move_is_pl(const Move m) const;
- bool move_gives_check(Move m) const;
bool move_gives_check(Move m, const CheckInfo& ci) const;
bool move_is_capture(Move m) const;
+ bool move_is_capture_or_promotion(Move m) const;
bool move_is_passed_pawn_push(Move m) const;
bool move_attacks_square(Move m, Square s) const;
// Static exchange evaluation
int see(Move m) const;
int see_sign(Move m) const;
- static int see_value(PieceType pt);
// Accessing hash keys
Key get_key() const;
// Position consistency check, for debugging
bool is_ok(int* failedStep = NULL) const;
- // Static member functions
- static void init_zobrist();
- static void init_piece_square_tables();
+ // Global initialization
+ static void init();
private:
void clear();
void detach();
void put_piece(Piece p, Square s);
- void do_allow_oo(Color c);
- void do_allow_ooo(Color c);
+ void set_castle_kingside(Color c);
+ void set_castle_queenside(Color c);
bool set_castling_rights(char token);
bool move_is_pl_slow(const Move m) const;
static Key zobSideToMove;
static Score PieceSquareTable[16][64];
static Key zobExclusion;
- static const Value seeValues[8];
- static const Value PieceValueMidgame[17];
- static const Value PieceValueEndgame[17];
};
inline int64_t Position::nodes_searched() const {
return board[s];
}
-inline Color Position::color_of_piece_on(Square s) const {
- return color_of_piece(piece_on(s));
-}
-
-inline PieceType Position::type_of_piece_on(Square s) const {
- return type_of_piece(piece_on(s));
-}
-
inline bool Position::square_is_empty(Square s) const {
return piece_on(s) == PIECE_NONE;
}
return !square_is_empty(s);
}
-inline Value Position::midgame_value_of_piece_on(Square s) const {
- return PieceValueMidgame[piece_on(s)];
-}
-
-inline Value Position::endgame_value_of_piece_on(Square s) const {
- return PieceValueEndgame[piece_on(s)];
-}
-
inline Color Position::side_to_move() const {
return sideToMove;
}
return pieceList[c][KING][0];
}
-inline bool Position::can_castle_kingside(Color side) const {
- return st->castleRights & (1+int(side));
+inline bool Position::can_castle_kingside(Color c) const {
+ return st->castleRights & (WHITE_OO << c);
+}
+
+inline bool Position::can_castle_queenside(Color c) const {
+ return st->castleRights & (WHITE_OOO << c);
+}
+
+inline bool Position::can_castle(Color c) const {
+ return st->castleRights & ((WHITE_OO | WHITE_OOO) << c);
}
-inline bool Position::can_castle_queenside(Color side) const {
- return st->castleRights & (4+4*int(side));
+inline void Position::set_castle_kingside(Color c) {
+ st->castleRights |= (WHITE_OO << c);
}
-inline bool Position::can_castle(Color side) const {
- return can_castle_kingside(side) || can_castle_queenside(side);
+inline void Position::set_castle_queenside(Color c) {
+ st->castleRights |= (WHITE_OOO << c);
}
inline Square Position::initial_kr_square(Color c) const {
return !(pieces(PAWN, opposite_color(c)) & attack_span_mask(c, s));
}
-inline int Position::see_value(PieceType pt) {
- return seeValues[pt];
-}
-
inline Key Position::get_key() const {
return st->key;
}
return chess960;
}
+inline bool Position::move_is_capture_or_promotion(Move m) const {
+
+ assert(m != MOVE_NONE && m != MOVE_NULL);
+ return move_is_special(m) ? !move_is_castle(m) : !square_is_empty(move_to(m));
+}
+
inline bool Position::move_is_capture(Move m) const {
- assert (m != MOVE_NONE && m != MOVE_NULL);
- return !move_is_special(m) ? !square_is_empty(move_to(m)) : move_is_ep(m);
+ assert(m != MOVE_NONE && m != MOVE_NULL);
+
+ // Note that castle is coded as "king captures the rook"
+ return (!square_is_empty(move_to(m)) && !move_is_castle(m)) || move_is_ep(m);
}
inline PieceType Position::captured_piece_type() const {
return threadID;
}
-inline void Position::do_allow_oo(Color c) {
- st->castleRights |= (1 + int(c));
-}
-
-inline void Position::do_allow_ooo(Color c) {
- st->castleRights |= (4 + 4*int(c));
-}
-
#endif // !defined(POSITION_H_INCLUDED)