SQ_A6, SQ_B6, SQ_C6, SQ_D6, SQ_E6, SQ_F6, SQ_G6, SQ_H6,
SQ_A7, SQ_B7, SQ_C7, SQ_D7, SQ_E7, SQ_F7, SQ_G7, SQ_H7,
SQ_A8, SQ_B8, SQ_C8, SQ_D8, SQ_E8, SQ_F8, SQ_G8, SQ_H8,
- SQ_NONE
-};
-
-enum File {
- FILE_A, FILE_B, FILE_C, FILE_D, FILE_E, FILE_F, FILE_G, FILE_H
-};
-
-enum Rank {
- RANK_1, RANK_2, RANK_3, RANK_4, RANK_5, RANK_6, RANK_7, RANK_8
-};
-
-enum SquareDelta {
+ SQ_NONE,
- DELTA_N = 8, DELTA_E = 1, DELTA_S = -8, DELTA_W = -1, DELTA_NONE = 0,
+ DELTA_N = 8,
+ DELTA_E = 1,
+ DELTA_S = -8,
+ DELTA_W = -1,
DELTA_NN = DELTA_N + DELTA_N,
DELTA_NE = DELTA_N + DELTA_E,
DELTA_NW = DELTA_N + DELTA_W
};
+enum File {
+ FILE_A, FILE_B, FILE_C, FILE_D, FILE_E, FILE_F, FILE_G, FILE_H
+};
+
+enum Rank {
+ RANK_1, RANK_2, RANK_3, RANK_4, RANK_5, RANK_6, RANK_7, RANK_8
+};
+
ENABLE_OPERATORS_ON(Square)
ENABLE_OPERATORS_ON(File)
ENABLE_OPERATORS_ON(Rank)
-ENABLE_OPERATORS_ON(SquareDelta)
const int FlipMask = 56;
const int FlopMask = 7;
-inline Square operator+ (Square x, SquareDelta i) { return x + Square(i); }
-inline void operator+= (Square& x, SquareDelta i) { x = x + Square(i); }
-inline Square operator- (Square x, SquareDelta i) { return x - Square(i); }
-inline void operator-= (Square& x, SquareDelta i) { x = x - Square(i); }
-
inline Square make_square(File f, Rank r) {
return Square((int(r) << 3) | int(f));
}