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move.h
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move.h
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/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
Copyright (C) 2008 Marco Costalba
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Stockfish is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#if !defined(MOVE_H_INCLUDED)
#define MOVE_H_INCLUDED
////
//// Includes
////
#include <iostream>
#include "misc.h"
#include "piece.h"
#include "square.h"
////
//// Types
////
class Position;
enum Move {
MOVE_NONE = 0,
MOVE_NULL = 65,
MOVE_MAX = 0xFFFFFF
};
struct MoveStack {
Move move;
int score;
};
////
//// Inline functions
////
inline Square move_from(Move m) {
return Square((int(m) >> 6) & 077);
}
inline Square move_to(Move m) {
return Square(m & 077);
}
inline PieceType move_promotion(Move m) {
return PieceType((int(m) >> 12) & 7);
}
inline bool move_is_ep(Move m) {
return bool((int(m) >> 15) & 1);
}
inline bool move_is_castle(Move m) {
return bool((int(m) >> 16) & 1);
}
inline bool move_is_short_castle(Move m) {
return move_is_castle(m) && (move_to(m) > move_from(m));
}
inline bool move_is_long_castle(Move m) {
return move_is_castle(m) && (move_to(m) < move_from(m));
}
inline Move make_promotion_move(Square from, Square to, PieceType promotion) {
return Move(int(to) | (int(from) << 6) | (int(promotion) << 12));
}
inline Move make_move(Square from, Square to) {
return Move(int(to) | (int(from) << 6));
}
inline Move make_castle_move(Square from, Square to) {
return Move(int(to) | (int(from) << 6) | (1 << 16));
}
inline Move make_ep_move(Square from, Square to) {
return Move(int(to) | (int(from) << 6) | (1 << 15));
}
////
//// Prototypes
////
extern std::ostream &operator << (std::ostream &os, Move m);
extern Move move_from_string(const Position &pos, const std::string &str);
extern const std::string move_to_string(Move m);
extern bool move_is_ok(Move m);
#endif // !defined(MOVE_H_INCLUDED)