/*
* moves.h - Move generation and checking
- * $Id: moves.h,v 2.1 2003/10/27 19:21:00 mann Exp $
*
- * Copyright 1991 by Digital Equipment Corporation, Maynard, Massachusetts.
- * Enhancements Copyright 1992-95 Free Software Foundation, Inc.
+ * Copyright 1991 by Digital Equipment Corporation, Maynard,
+ * Massachusetts.
+ *
+ * Enhancements Copyright 1992-2001, 2002, 2003, 2004, 2005, 2006,
+ * 2007, 2008, 2009 Free Software Foundation, Inc.
+ *
+ * Enhancements Copyright 2005 Alessandro Scotti
*
* The following terms apply to Digital Equipment Corporation's copyright
* interest in XBoard:
* SOFTWARE.
* ------------------------------------------------------------------------
*
- * The following terms apply to the enhanced version of XBoard distributed
- * by the Free Software Foundation:
+ * The following terms apply to the enhanced version of XBoard
+ * distributed by the Free Software Foundation:
* ------------------------------------------------------------------------
- * This program is free software; you can redistribute it and/or modify
+ *
+ * GNU XBoard 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 2 of the License, or
- * (at your option) any later version.
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
*
- * This program 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.
+ * GNU XBoard 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- * ------------------------------------------------------------------------
- */
+ * along with this program. If not, see http://www.gnu.org/licenses/. *
+ *
+ *------------------------------------------------------------------------
+ ** See the file ChangeLog for a revision history. */
extern ChessSquare PromoPiece P((ChessMove moveType));
extern ChessMove PromoCharToMoveType P((int whiteOnMove, int promoChar));
extern char PieceToChar P((ChessSquare p));
extern ChessSquare CharToPiece P((int c));
+extern int PieceToNumber P((ChessSquare p));
extern void CopyBoard P((Board to, Board from));
extern int CompareBoards P((Board board1, Board board2));
+extern char pieceToChar[(int)EmptySquare+1];
typedef void (*MoveCallback) P((Board board, int flags, ChessMove kind,
int rf, int ff, int rt, int ft,
#define F_ATOMIC_CAPTURE 128 /* capturing piece explodes, destroying itself
and all non-pawns on adjacent squares;
destroying your own king is illegal */
+#define F_FRC_TYPE_CASTLING 256 /* generate castlings as captures of own Rook */
+#define F_MANDATORY_CAPTURE 0x200
-/* Special epfile values */
-#define EP_NONE -1
-#define EP_UNKNOWN -2
+/* Special epfile values. [HGM] positive values are non-reversible moves! */
+#define EP_NONE (-4) /* [HGM] Tricky! order matters: */
+#define EP_UNKNOWN (-1) /* >= EP_UNKNOWN spils rep-draw */
+#define EP_CAPTURE (-2) /* <= EP_NONE is reversible move */
+#define EP_PAWN_MOVE (-3)
+#define EP_REP_DRAW (-15)
+#define EP_RULE_DRAW (-14)
+#define EP_INSUF_DRAW (-13)
+#define EP_DRAWS (-10)
+#define EP_WINS (-9)
+#define EP_BEROLIN_A 16 /* [HGM] berolina: add to file if pawn to be taken of a-side of e.p.file */
+#define EP_CHECKMATE 100 /* [HGM] verify: record mates in epStatus for easy claim verification */
+#define EP_STALEMATE -16
/* Call callback once for each pseudo-legal move in the given
position, except castling moves. A move is pseudo-legal if it is
on move is currently in check and F_IGNORE_CHECK is not set.
*/
extern int GenLegal P((Board board, int flags, int epfile,
+ char castlingRights[], /* [HGM] */
MoveCallback callback, VOIDSTAR closure));
/* If the player on move were to move from (rf, ff) to (rt, ft), would
flags say is on move? Other arguments as in GenPseudoLegal.
Returns the type of move made, taking promoChar into account. */
extern ChessMove LegalityTest P((Board board, int flags, int epfile,
+ char castlingRights[], /* [HGM] */
int rf, int ff, int rt, int ft,
int promoChar));
#define MT_CHECK 1
#define MT_CHECKMATE 2
#define MT_STALEMATE 3
+#define MT_STAINMATE 4 /* [HGM] xq: for games where being stalemated counts as a loss */
+#define MT_STEALMATE 5 /* [HGM] losers: for games where being stalemated counts as a win */
+#define MT_TRICKMATE 6 /* [HGM] losers: for games where being checkmated counts as a win */
+#define MT_BARE 7 /* [HGM] shatranj: for games where having bare king loses */
+#define MT_DRAW 8 /* [HGM] shatranj: other draws */
+#define MT_NOKING 9 /* [HGM] atomic: for games lost through king capture */
/* Return MT_NONE, MT_CHECK, MT_CHECKMATE, or MT_STALEMATE */
-extern int MateTest P((Board board, int flags, int epfile));
+extern int MateTest P((Board board, int flags, int epfile,
+ char castlingRights[])); /* [HGM] */
typedef struct {
/* Input data */
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