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Retire enum Direction

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Use SquareDelta instead

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2010-12-26 12:41:30 +01:00
parent f08a6eed0d
commit cb7f20913e
4 changed files with 34 additions and 55 deletions
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src/square.h
+8 -16
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@@ -58,26 +58,20 @@ enum Rank {
enum SquareDelta {
DELTA_N = 8, DELTA_E = 1, DELTA_S = -8, DELTA_W = -1,
DELTA_N = 8, DELTA_E = 1, DELTA_S = -8, DELTA_W = -1, DELTA_NONE = 0,
DELTA_NN = DELTA_N + DELTA_N,
DELTA_NE = DELTA_N + DELTA_E,
DELTA_SE = DELTA_S + DELTA_E,
DELTA_SS = DELTA_S + DELTA_S,
DELTA_SW = DELTA_S + DELTA_W,
DELTA_NW = DELTA_N + DELTA_W,
DELTA_NW = DELTA_N + DELTA_W
};
enum Direction {
DIR_E = 0, DIR_N = 1, DIR_NE = 2, DIR_NW = 3, DIR_NONE = 4
};
ENABLE_OPERATORS_ON(Square);
ENABLE_OPERATORS_ON(File);
ENABLE_OPERATORS_ON(Rank);
ENABLE_OPERATORS_ON(SquareDelta);
ENABLE_OPERATORS_ON(Direction);
////
@@ -87,7 +81,7 @@ ENABLE_OPERATORS_ON(Direction);
const int FlipMask = 56;
const int FlopMask = 7;
extern uint8_t DirectionTable[64][64];
extern int8_t DirectionTable[64][64];
////
@@ -189,16 +183,14 @@ inline bool square_is_ok(Square s) {
return file_is_ok(square_file(s)) && rank_is_ok(square_rank(s));
}
inline Direction direction_between_squares(Square s1, Square s2) {
return Direction(DirectionTable[s1][s2]);
}
inline int direction_is_diagonal(Square s1, Square s2) {
return DirectionTable[s1][s2] & 2;
inline bool squares_aligned(Square s1, Square s2, Square s3) {
return DirectionTable[s1][s2] != DELTA_NONE
&& abs(DirectionTable[s1][s2]) == abs(DirectionTable[s2][s3]);
}
inline bool direction_is_straight(Square s1, Square s2) {
return DirectionTable[s1][s2] < 2;
return abs(DirectionTable[s1][s2]) == DELTA_N
|| abs(DirectionTable[s1][s2]) == DELTA_E;
}
////