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(PIECE_H_INCLUDED)
#define PIECE_H_INCLUDED
-////
+////
//// Includes
////
#include "square.h"
-////
+////
//// Types
////
////
-//// Constants and variables
+//// Constants
////
const PieceType PieceTypeMin = PAWN;
const PieceType PieceTypeMax = KING;
-extern const int SlidingArray[18];
-extern const SquareDelta Directions[16][16];
-extern const SquareDelta PawnPush[2];
+const int SlidingArray[18] = {
+ 0, 0, 0, 1, 2, 3, 0, 0, 0, 0, 0, 1, 2, 3, 0, 0, 0, 0
+};
+
+const SquareDelta Directions[16][16] = {
+ {DELTA_ZERO},
+ {DELTA_NW, DELTA_NE, DELTA_ZERO},
+ {DELTA_SSW, DELTA_SSE, DELTA_SWW, DELTA_SEE,
+ DELTA_NWW, DELTA_NEE, DELTA_NNW, DELTA_NNE, DELTA_ZERO},
+ {DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
+ {DELTA_S, DELTA_E, DELTA_W, DELTA_N, DELTA_ZERO},
+ {DELTA_S, DELTA_E, DELTA_W, DELTA_N,
+ DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
+ {DELTA_S, DELTA_E, DELTA_W, DELTA_N,
+ DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
+ {DELTA_ZERO},
+ {DELTA_ZERO},
+ {DELTA_SW, DELTA_SE, DELTA_ZERO},
+ {DELTA_SSW, DELTA_SSE, DELTA_SWW, DELTA_SEE,
+ DELTA_NWW, DELTA_NEE, DELTA_NNW, DELTA_NNE, DELTA_ZERO},
+ {DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
+ {DELTA_S, DELTA_E, DELTA_W, DELTA_N, DELTA_ZERO},
+ {DELTA_S, DELTA_E, DELTA_W, DELTA_N,
+ DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
+ {DELTA_S, DELTA_E, DELTA_W, DELTA_N,
+ DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
+};
+const SquareDelta PawnPush[2] = {
+ DELTA_N, DELTA_S
+};
-////
+
+////
//// Inline functions
////
inline SquareDelta pawn_push(Color c) {
return PawnPush[c];
}
-
+
+inline bool piece_type_is_ok(PieceType pc) {
+ return pc >= PAWN && pc <= KING;
+}
+
+inline bool piece_is_ok(Piece pc) {
+ return piece_type_is_ok(type_of_piece(pc)) && color_is_ok(color_of_piece(pc));
+}
+
////
//// Prototypes
////
-extern char piece_type_to_char(PieceType pt, bool upcase = false);
+extern int piece_type_to_char(PieceType pt, bool upcase = false);
extern PieceType piece_type_from_char(char c);
-extern bool piece_is_ok(Piece pc);
-extern bool piece_type_is_ok(PieceType pt);
#endif // !defined(PIECE_H_INCLUDED)