/// must be passed as a parameter.
struct StateInfo {
- Bitboard pinners[2], pinned[2], dcCandidates[2], checkersBB;
Key key, pawnKey, materialKey;
int castleRights, rule50;
Square epSquare;
- Move lastMove;
Value mgValue, egValue;
+
PieceType capture;
+ Bitboard checkersBB;
+ Move lastMove;
StateInfo* previous;
};
// Properties of moves
bool pl_move_is_legal(Move m) const;
+ bool pl_move_is_legal(Move m, Bitboard pinned) const;
bool move_is_check(Move m) const;
+ bool move_is_check(Move m, Bitboard dcCandidates) const;
bool move_is_capture(Move m) const;
bool move_is_deep_pawn_push(Move m) const;
bool move_is_pawn_push_to_7th(Move m) const;
bool square_is_weak(Square s, Color c) const;
// Doing and undoing moves
+ void setStartState(const StateInfo& st);
void do_move(Move m, StateInfo& st);
+ void do_move(Move m, StateInfo& st, Bitboard dcCandidates);
void undo_move(Move m);
void do_null_move(StateInfo& st);
void undo_null_move();
static void init_piece_square_tables();
private:
+
// Initialization helper functions (used while setting up a position)
void clear();
void put_piece(Piece p, Square s);
void undo_promotion_move(Move m);
void undo_ep_move(Move m);
void find_checkers();
- void find_pinned();
template<PieceType Piece>
void update_checkers(Bitboard* pCheckersBB, Square ksq, Square from, Square to, Bitboard dcCandidates);
return StepAttackBB[KING][s];
}
-inline Bitboard Position::pinned_pieces(Color c) const {
- return st->pinned[c];
-}
-
-inline Bitboard Position::pinned_pieces(Color c, Bitboard& p) const {
- p = st->pinners[c];
- return st->pinned[c];
-}
-
-inline Bitboard Position::discovered_check_candidates(Color c) const {
- return st->dcCandidates[c];
-}
-
inline Bitboard Position::checkers() const {
return st->checkersBB;
}