enum Phase {
PHASE_ENDGAME = 0,
- PHASE_MIDGAME = 128
+ PHASE_MIDGAME = 128,
+ MG = 0, EG = 1, PHASE_NB = 2
};
enum ScaleFactor {
VALUE_ENSURE_INTEGER_SIZE_P = INT_MAX,
VALUE_ENSURE_INTEGER_SIZE_N = INT_MIN,
- Mg = 0, Eg = 1,
-
PawnValueMg = 198, PawnValueEg = 258,
KnightValueMg = 817, KnightValueEg = 846,
BishopValueMg = 836, BishopValueEg = 857,
};
enum Piece {
- NO_PIECE = 16, // color_of(NO_PIECE) == NO_COLOR
+ NO_PIECE = 0,
W_PAWN = 1, W_KNIGHT = 2, W_BISHOP = 3, W_ROOK = 4, W_QUEEN = 5, W_KING = 6,
B_PAWN = 9, B_KNIGHT = 10, B_BISHOP = 11, B_ROOK = 12, B_QUEEN = 13, B_KING = 14,
PIECE_NB = 16
CACHE_LINE_ALIGNMENT
extern Score pieceSquareTable[PIECE_NB][SQUARE_NB];
-extern Value PieceValue[2][18]; // [Mg / Eg][piece / pieceType]
+extern Value PieceValue[PHASE_NB][PIECE_NB];
extern int SquareDistance[SQUARE_NB][SQUARE_NB];
struct MoveStack {
}
inline Color color_of(Piece p) {
- return Color(p >> 3);
+ return p == NO_PIECE ? NO_COLOR : Color(p >> 3);
}
inline bool is_ok(Square s) {
}
inline char file_to_char(File f) {
- return char(f - FILE_A + int('a'));
+ return char(f - FILE_A + 'a');
}
inline char rank_to_char(Rank r) {
- return char(r - RANK_1 + int('1'));
+ return char(r - RANK_1 + '1');
}
inline Square pawn_push(Color c) {