+++ /dev/null
-/*
- Stockfish, a UCI chess playing engine derived from Glaurung 2.1
- Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
-
- Stockfish is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- Stockfish is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-
-#if !defined(DIRECTION_H_INCLUDED)
-#define DIRECTION_H_INCLUDED
-
-////
-//// Includes
-////
-
-#include "square.h"
-#include "types.h"
-
-
-////
-//// Types
-////
-
-enum Direction {
- DIR_E = 0, DIR_N = 1, DIR_NE = 2, DIR_NW = 3, DIR_NONE = 4
-};
-
-enum SignedDirection {
- SIGNED_DIR_E = 0, SIGNED_DIR_W = 1,
- SIGNED_DIR_N = 2, SIGNED_DIR_S = 3,
- SIGNED_DIR_NE = 4, SIGNED_DIR_SW = 5,
- SIGNED_DIR_NW = 6, SIGNED_DIR_SE = 7,
- SIGNED_DIR_NONE = 8
-};
-
-ENABLE_OPERATORS_ON(SignedDirection);
-
-
-////
-//// Variables
-////
-
-extern uint8_t DirectionTable[64][64];
-extern uint8_t SignedDirectionTable[64][64];
-
-
-////
-//// Inline functions
-////
-
-inline Direction direction_between_squares(Square s1, Square s2) {
- return Direction(DirectionTable[s1][s2]);
-}
-
-inline SignedDirection signed_direction_between_squares(Square s1, Square s2) {
- return SignedDirection(SignedDirectionTable[s1][s2]);
-}
-
-inline int direction_is_diagonal(Square s1, Square s2) {
- return DirectionTable[s1][s2] & 2;
-}
-
-inline bool direction_is_straight(Square s1, Square s2) {
- return DirectionTable[s1][s2] < 2;
-}
-
-////
-//// Prototypes
-////
-
-extern void init_direction_table();
-
-
-#endif // !defined(DIRECTION_H_INCLUDED)
DELTA_NW = DELTA_N + DELTA_W,
};
+enum Direction {
+ DIR_E = 0, DIR_N = 1, DIR_NE = 2, DIR_NW = 3, DIR_NONE = 4
+};
+
+enum SignedDirection {
+ SIGNED_DIR_E = 0, SIGNED_DIR_W = 1,
+ SIGNED_DIR_N = 2, SIGNED_DIR_S = 3,
+ SIGNED_DIR_NE = 4, SIGNED_DIR_SW = 5,
+ SIGNED_DIR_NW = 6, SIGNED_DIR_SE = 7,
+ SIGNED_DIR_NONE = 8
+};
+
ENABLE_OPERATORS_ON(Square);
ENABLE_OPERATORS_ON(File);
ENABLE_OPERATORS_ON(Rank);
ENABLE_OPERATORS_ON(SquareDelta);
+ENABLE_OPERATORS_ON(SignedDirection);
////
const int FlipMask = 56;
const int FlopMask = 7;
+extern uint8_t DirectionTable[64][64];
+extern uint8_t SignedDirectionTable[64][64];
+
////
//// Inline functions
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 direction_is_straight(Square s1, Square s2) {
+ return DirectionTable[s1][s2] < 2;
+}
+
+////
+//// Prototypes
+////
+
+extern void init_direction_table();
+
#endif // !defined(SQUARE_H_INCLUDED)