/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008 Marco Costalba
+ Copyright (C) 2008-2009 Marco Costalba
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(PIECE_H_INCLUDED)
#define PIECE_H_INCLUDED
-////
+////
//// Includes
////
#include "color.h"
-#include "misc.h"
#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
+};
-////
+////
//// Inline functions
////
return Piece((int(c) << 3) | int(pt));
}
-inline Piece pawn_of_color(Color c) {
- return piece_of_color_and_type(c, PAWN);
-}
-
-inline Piece knight_of_color(Color c) {
- return piece_of_color_and_type(c, KNIGHT);
-}
-
-inline Piece bishop_of_color(Color c) {
- return piece_of_color_and_type(c, BISHOP);
-}
-
-inline Piece rook_of_color(Color c) {
- return piece_of_color_and_type(c, ROOK);
-}
-
-inline Piece queen_of_color(Color c) {
- return piece_of_color_and_type(c, QUEEN);
+inline int piece_is_slider(Piece p) {
+ return SlidingArray[int(p)];
}
-inline Piece king_of_color(Color c) {
- return piece_of_color_and_type(c, KING);
+inline SquareDelta pawn_push(Color c) {
+ return (c == WHITE ? DELTA_N : DELTA_S);
}
-inline int piece_is_slider(Piece p) {
- return SlidingArray[int(p)];
+inline bool piece_type_is_ok(PieceType pc) {
+ return pc >= PAWN && pc <= KING;
}
-inline int piece_type_is_slider(PieceType pt) {
- return SlidingArray[int(pt)];
+inline bool piece_is_ok(Piece pc) {
+ return piece_type_is_ok(type_of_piece(pc)) && color_is_ok(color_of_piece(pc));
}
-inline SquareDelta pawn_push(Color c) {
- return PawnPush[c];
-}
-
////
//// Prototypes
extern char 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)