/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad
+ Copyright (C) 2008-2013 Marco Costalba, Joona Kiiski, Tord Romstad
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 checkInfo struct is initialized at c'tor time and keeps info used
/// to detect if a move gives check.
class Position;
-class Thread;
+struct Thread;
struct CheckInfo {
Square castle_rook_square(Color c, CastlingSide s) const;
// Checking
- bool in_check() const;
Bitboard checkers() const;
Bitboard discovered_check_candidates() const;
Bitboard pinned_pieces() const;
void do_move(Move m, StateInfo& st);
void do_move(Move m, StateInfo& st, const CheckInfo& ci, bool moveIsCheck);
void undo_move(Move m);
- template<bool Do> void do_null_move(StateInfo& st);
+ void do_null_move(StateInfo& st);
+ void undo_null_move();
// Static exchange evaluation
- int see(Move m) const;
+ int see(Move m, int asymmThreshold = 0) const;
int see_sign(Move m) const;
// Accessing hash keys
// Other properties of the position
Color side_to_move() const;
- int startpos_ply_counter() const;
+ int game_ply() const;
bool is_chess960() const;
Thread* this_thread() const;
int64_t nodes_searched() const;
void set_nodes_searched(int64_t n);
- template<bool CheckRepetition, bool CheckThreeFold> bool is_draw() const;
+ bool is_draw() const;
// Position consistency check, for debugging
bool pos_is_ok(int* failedStep = NULL) const;
void put_piece(Piece p, Square s);
void set_castle_right(Color c, Square rfrom);
- // Helper template functions
- template<bool Do> void do_castle_move(Move m);
+ // Helper functions
+ void do_castle(Square kfrom, Square kto, Square rfrom, Square rto);
template<bool FindPinned> Bitboard hidden_checkers() const;
// Computing hash keys from scratch (for initialization and debugging)
Bitboard castlePath[COLOR_NB][CASTLING_SIDE_NB];
StateInfo startState;
int64_t nodes;
- int startPosPly;
+ int gamePly;
Color sideToMove;
Thread* thisThread;
StateInfo* st;
return st->checkersBB;
}
-inline bool Position::in_check() const {
- return st->checkersBB != 0;
-}
-
inline Bitboard Position::discovered_check_candidates() const {
return hidden_checkers<false>();
}
&& pawn_is_passed(sideToMove, to_sq(m));
}
-inline int Position::startpos_ply_counter() const {
- return startPosPly + st->pliesFromNull; // HACK
+inline int Position::game_ply() const {
+ return gamePly;
}
inline bool Position::opposite_bishops() const {