////
/// FEN string for the initial position
-const std::string StartPosition = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1";
+const std::string StartPositionFEN = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1";
/// Maximum number of plies per game (220 should be enough, because the
/// maximum search depth is 100, and during position setup we reset the
struct CheckInfo {
- CheckInfo(const Position&);
+ explicit CheckInfo(const Position&);
Bitboard dcCandidates;
Bitboard checkSq[8];
// Incremental evaluation
Score value() const;
Value non_pawn_material(Color c) const;
- Score pst_delta(Piece piece, Square from, Square to) const;
+ static Score pst_delta(Piece piece, Square from, Square to);
// Game termination checks
bool is_mate() const;
void put_piece(Piece p, Square s);
void allow_oo(Color c);
void allow_ooo(Color c);
+ bool set_castling_rights(char token);
// Helper functions for doing and undoing moves
void do_capture_move(Key& key, PieceType capture, Color them, Square to, bool ep);
Key compute_material_key() const;
// Computing incremental evaluation scores and material counts
- Score pst(Color c, PieceType pt, Square s) const;
+ static Score pst(Color c, PieceType pt, Square s);
Score compute_value() const;
Value compute_non_pawn_material(Color c) const;
}
inline bool Position::square_is_empty(Square s) const {
- return piece_on(s) == EMPTY;
+ return piece_on(s) == NO_PIECE;
}
inline bool Position::square_is_occupied(Square s) const {
return st->materialKey;
}
-inline Score Position::pst(Color c, PieceType pt, Square s) const {
+inline Score Position::pst(Color c, PieceType pt, Square s) {
return PieceSquareTable[piece_of_color_and_type(c, pt)][s];
}
-inline Score Position::pst_delta(Piece piece, Square from, Square to) const {
+inline Score Position::pst_delta(Piece piece, Square from, Square to) {
return PieceSquareTable[piece][to] - PieceSquareTable[piece][from];
}
return piece_count(WHITE, BISHOP) == 1
&& piece_count(BLACK, BISHOP) == 1
- && square_color(piece_list(WHITE, BISHOP, 0)) != square_color(piece_list(BLACK, BISHOP, 0));
+ && !same_color_squares(piece_list(WHITE, BISHOP, 0), piece_list(BLACK, BISHOP, 0));
}
inline bool Position::has_pawn_on_7th(Color c) const {