Initial import of Glaurung 2.1

src/move.h

@@ -0,0 +1,112 @@
+/*
+  Glaurung, a UCI chess playing engine.
+  Copyright (C) 2004-2008 Tord Romstad
+
+  Glaurung 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.
+  
+  Glaurung 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(MOVE_H_INCLUDED)
+#define MOVE_H_INCLUDED
+
+////
+//// Includes
+////
+
+#include <iostream>
+
+#include "misc.h"
+#include "piece.h"
+#include "square.h"
+
+
+////
+//// Types
+////
+
+class Position;
+
+enum Move {
+  MOVE_NONE = 0,
+  MOVE_NULL = 65, 
+  MOVE_MAX = 0xFFFFFF
+};
+
+
+struct MoveStack {
+  Move move;
+  int score;
+};
+
+
+////
+//// Inline functions
+////
+
+inline Square move_from(Move m) {
+  return Square((int(m) >> 6) & 077);
+}
+
+inline Square move_to(Move m) {
+  return Square(m & 077);
+}
+
+inline PieceType move_promotion(Move m) {
+  return PieceType((int(m) >> 12) & 7);
+}
+
+inline bool move_is_ep(Move m) {
+  return bool((int(m) >> 15) & 1);
+}
+
+inline bool move_is_castle(Move m) {
+  return bool((int(m) >> 16) & 1);
+}
+
+inline bool move_is_short_castle(Move m) {
+  return move_is_castle(m) && (move_to(m) > move_from(m));
+}
+
+inline bool move_is_long_castle(Move m) {
+  return move_is_castle(m) && (move_to(m) < move_from(m));
+}
+
+inline Move make_promotion_move(Square from, Square to, PieceType promotion) {
+  return Move(int(to) | (int(from) << 6) | (int(promotion) << 12));
+}
+
+inline Move make_move(Square from, Square to) {
+  return Move(int(to) | (int(from) << 6));
+}
+
+inline Move make_castle_move(Square from, Square to) {
+  return Move(int(to) | (int(from) << 6) | (1 << 16));
+}
+
+inline Move make_ep_move(Square from, Square to) {
+  return Move(int(to) | (int(from) << 6) | (1 << 15));
+}
+
+
+////
+//// Prototypes
+////
+
+extern std::ostream &operator << (std::ostream &os, Move m);
+extern Move move_from_string(const Position &pos, const std::string &str);
+extern const std::string move_to_string(Move m);
+extern bool move_is_ok(Move m);
+
+
+#endif // !defined(MOVE_H_INCLUDED)