ONE_PLY = 2,
- DEPTH_ZERO = 0 * ONE_PLY,
- DEPTH_QS_CHECKS = -1 * ONE_PLY,
- DEPTH_QS_NO_CHECKS = -2 * ONE_PLY,
+ DEPTH_ZERO = 0 * ONE_PLY,
+ DEPTH_QS_CHECKS = -1 * ONE_PLY,
+ DEPTH_QS_NO_CHECKS = -2 * ONE_PLY,
+ DEPTH_QS_RECAPTURES = -4 * ONE_PLY,
DEPTH_NONE = -127 * ONE_PLY
};
SCALE_FACTOR_NONE = 255
};
+enum CastleRight {
+ CASTLES_NONE = 0,
+ WHITE_OO = 1,
+ BLACK_OO = 2,
+ WHITE_OOO = 4,
+ BLACK_OOO = 8,
+ ALL_CASTLES = 15
+};
+
/// Score enum keeps a midgame and an endgame value in a single
/// integer (enum), first LSB 16 bits are used to store endgame
const Value QueenValueMidgame = Value(0x9D9);
const Value QueenValueEndgame = Value(0x9FE);
+extern const Value PieceValueMidgame[17];
+extern const Value PieceValueEndgame[17];
+
+inline Value piece_value_midgame(Piece p) {
+ return PieceValueMidgame[p];
+}
+
+inline Value piece_value_endgame(Piece p) {
+ return PieceValueEndgame[p];
+}
+
inline Value value_mate_in(int ply) {
return VALUE_MATE - ply;
}
return Piece((c << 3) | pt);
}
-inline PieceType type_of_piece(Piece p) {
+inline PieceType piece_type(Piece p) {
return PieceType(p & 7);
}
-inline Color color_of_piece(Piece p) {
+inline Color piece_color(Piece p) {
return Color(p >> 3);
}
return Color(c ^ 1);
}
-inline bool color_is_ok(Color c) {
- return c == WHITE || c == BLACK;
-}
-
-inline bool piece_type_is_ok(PieceType pt) {
- return pt >= PAWN && pt <= KING;
-}
-
-inline bool piece_is_ok(Piece p) {
- return piece_type_is_ok(type_of_piece(p)) && color_is_ok(color_of_piece(p));
-}
-
inline char piece_type_to_char(PieceType pt) {
static const char ch[] = " PNBRQK";
return ch[pt];
return Square((r << 3) | f);
}
+inline bool square_is_ok(Square s) {
+ return s >= SQ_A1 && s <= SQ_H8;
+}
+
inline File square_file(Square s) {
return File(s & 7);
}
return Max(file_distance(s1, s2), rank_distance(s1, s2));
}
-inline File file_from_char(char c) {
- return File(c - 'a') + FILE_A;
-}
-
inline char file_to_char(File f) {
return char(f - FILE_A + int('a'));
}
-inline Rank rank_from_char(char c) {
- return Rank(c - '1') + RANK_1;
-}
-
inline char rank_to_char(Rank r) {
return char(r - RANK_1 + int('1'));
}
return std::string(ch);
}
-inline bool file_is_ok(File f) {
- return f >= FILE_A && f <= FILE_H;
-}
-
-inline bool rank_is_ok(Rank r) {
- return r >= RANK_1 && r <= RANK_8;
-}
-
-inline bool square_is_ok(Square s) {
- return s >= SQ_A1 && s <= SQ_H8;
-}
-
inline Square pawn_push(Color c) {
return c == WHITE ? DELTA_N : DELTA_S;
}