CASTLING = 3 << 14
};
-enum CastlingFlag { // Defined as in PolyGlot book hash key
+enum Color {
+ WHITE, BLACK, NO_COLOR, COLOR_NB = 2
+};
+
+enum CastlingSide {
+ KING_SIDE, QUEEN_SIDE, CASTLING_SIDE_NB = 2
+};
+
+enum CastlingRight { // Defined as in PolyGlot book hash key
NO_CASTLING,
WHITE_OO,
WHITE_OOO = WHITE_OO << 1,
BLACK_OO = WHITE_OO << 2,
BLACK_OOO = WHITE_OO << 3,
ANY_CASTLING = WHITE_OO | WHITE_OOO | BLACK_OO | BLACK_OOO,
- CASTLING_FLAG_NB = 16
+ CASTLING_RIGHT_NB = 16
};
-enum CastlingSide {
- KING_SIDE,
- QUEEN_SIDE,
- CASTLING_SIDE_NB = 2
+template<Color C, CastlingSide S> struct MakeCastling {
+ static const CastlingRight
+ right = C == WHITE ? S == QUEEN_SIDE ? WHITE_OOO : WHITE_OO
+ : S == QUEEN_SIDE ? BLACK_OOO : BLACK_OO;
};
enum Phase {
VALUE_ZERO = 0,
VALUE_DRAW = 0,
VALUE_KNOWN_WIN = 10000,
- VALUE_MATE = 30000,
- VALUE_INFINITE = 30001,
- VALUE_NONE = 30002,
+ VALUE_MATE = 32000,
+ VALUE_INFINITE = 32001,
+ VALUE_NONE = 32002,
VALUE_MATE_IN_MAX_PLY = VALUE_MATE - MAX_PLY,
VALUE_MATED_IN_MAX_PLY = -VALUE_MATE + MAX_PLY,
PIECE_NB = 16
};
-enum Color {
- WHITE, BLACK, NO_COLOR, COLOR_NB = 2
-};
-
enum Depth {
ONE_PLY = 2,
struct ExtMove {
Move move;
- int score;
+ Value value;
};
inline bool operator<(const ExtMove& f, const ExtMove& s) {
- return f.score < s.score;
+ return f.value < s.value;
}
inline Color operator~(Color c) {
return Square(s ^ SQ_A8); // Vertical flip SQ_A1 -> SQ_A8
}
-inline Square operator|(File f, Rank r) {
- return Square((r << 3) | f);
+inline CastlingRight operator|(Color c, CastlingSide s) {
+ return CastlingRight(WHITE_OO << ((s == QUEEN_SIDE) + 2 * c));
}
inline Value mate_in(int ply) {
return -VALUE_MATE + ply;
}
-inline Piece make_piece(Color c, PieceType pt) {
- return Piece((c << 3) | pt);
+inline Square make_square(File f, Rank r) {
+ return Square((r << 3) | f);
}
-inline CastlingFlag make_castling_flag(Color c, CastlingSide s) {
- return CastlingFlag(WHITE_OO << ((s == QUEEN_SIDE) + 2 * c));
+inline Piece make_piece(Color c, PieceType pt) {
+ return Piece((c << 3) | pt);
}
-inline PieceType type_of(Piece p) {
- return PieceType(p & 7);
+inline PieceType type_of(Piece pc) {
+ return PieceType(pc & 7);
}
-inline Color color_of(Piece p) {
- assert(p != NO_PIECE);
- return Color(p >> 3);
+inline Color color_of(Piece pc) {
+ assert(pc != NO_PIECE);
+ return Color(pc >> 3);
}
inline bool is_ok(Square s) {
return ((s >> 3) ^ s) & 1;
}
-inline char file_to_char(File f, bool tolower = true) {
+inline char to_char(File f, bool tolower = true) {
return char(f - FILE_A + (tolower ? 'a' : 'A'));
}
-inline char rank_to_char(Rank r) {
+inline char to_char(Rank r) {
return char(r - RANK_1 + '1');
}
#include <string>
-inline const std::string square_to_string(Square s) {
- char ch[] = { file_to_char(file_of(s)), rank_to_char(rank_of(s)), 0 };
+inline const std::string to_string(Square s) {
+ char ch[] = { to_char(file_of(s)), to_char(rank_of(s)), 0 };
return ch;
}