-/*\r
- * moves.h - Move generation and checking\r
- * $Id: moves.h,v 2.1 2003/10/27 19:21:00 mann Exp $\r
- *\r
- * Copyright 1991 by Digital Equipment Corporation, Maynard, Massachusetts.\r
- * Enhancements Copyright 1992-95 Free Software Foundation, Inc.\r
- *\r
- * The following terms apply to Digital Equipment Corporation's copyright\r
- * interest in XBoard:\r
- * ------------------------------------------------------------------------\r
- * All Rights Reserved\r
- *\r
- * Permission to use, copy, modify, and distribute this software and its\r
- * documentation for any purpose and without fee is hereby granted,\r
- * provided that the above copyright notice appear in all copies and that\r
- * both that copyright notice and this permission notice appear in\r
- * supporting documentation, and that the name of Digital not be\r
- * used in advertising or publicity pertaining to distribution of the\r
- * software without specific, written prior permission.\r
- *\r
- * DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING\r
- * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL\r
- * DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR\r
- * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,\r
- * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,\r
- * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS\r
- * SOFTWARE.\r
- * ------------------------------------------------------------------------\r
- *\r
- * The following terms apply to the enhanced version of XBoard distributed\r
- * by the Free Software Foundation:\r
- * ------------------------------------------------------------------------\r
- * This program is free software; you can redistribute it and/or modify\r
- * it under the terms of the GNU General Public License as published by\r
- * the Free Software Foundation; either version 2 of the License, or\r
- * (at your option) any later version.\r
- *\r
- * This program is distributed in the hope that it will be useful,\r
- * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
- * GNU General Public License for more details.\r
- *\r
- * You should have received a copy of the GNU General Public License\r
- * along with this program; if not, write to the Free Software\r
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.\r
- * ------------------------------------------------------------------------\r
- */\r
-\r
-extern ChessSquare PromoPiece P((ChessMove moveType));\r
-extern ChessMove PromoCharToMoveType P((int whiteOnMove, int promoChar));\r
-extern char PieceToChar P((ChessSquare p));\r
-extern ChessSquare CharToPiece P((int c));\r
-\r
-extern void CopyBoard P((Board to, Board from));\r
-extern int CompareBoards P((Board board1, Board board2));\r
-\r
-typedef void (*MoveCallback) P((Board board, int flags, ChessMove kind,\r
- int rf, int ff, int rt, int ft,\r
- VOIDSTAR closure));\r
-\r
-/* Values for flags arguments */\r
-#define F_WHITE_ON_MOVE 1\r
-#define F_WHITE_KCASTLE_OK 2\r
-#define F_WHITE_QCASTLE_OK 4\r
-#define F_BLACK_KCASTLE_OK 8\r
-#define F_BLACK_QCASTLE_OK 16\r
-#define F_ALL_CASTLE_OK (F_WHITE_KCASTLE_OK | F_WHITE_QCASTLE_OK | \\r
- F_BLACK_KCASTLE_OK | F_BLACK_QCASTLE_OK)\r
-#define F_IGNORE_CHECK 32\r
-#define F_KRIEGSPIEL_CAPTURE 64 /* pawns can try to capture invisible pieces */\r
-#define F_ATOMIC_CAPTURE 128 /* capturing piece explodes, destroying itself\r
- and all non-pawns on adjacent squares; \r
- destroying your own king is illegal */\r
-\r
-/* Special epfile values. [HGM] positive values are non-reversible moves! */\r
-#define EP_NONE (-4) /* [HGM] Tricky! order matters: */\r
-#define EP_UNKNOWN (-1) /* >= EP_UNKNOWN spils rep-draw */\r
-#define EP_CAPTURE (-2) /* <= EP_NONE is reversible move */\r
-#define EP_PAWN_MOVE (-3)\r
-#define EP_REP_DRAW (-15)\r
-#define EP_RULE_DRAW (-14)\r
-#define EP_INSUF_DRAW (-13)\r
-#define EP_DRAWS (-10)\r
-\r
-/* Call callback once for each pseudo-legal move in the given\r
- position, except castling moves. A move is pseudo-legal if it is\r
- legal, or if it would be legal except that it leaves the king in\r
- check. In the arguments, epfile is EP_NONE if the previous move\r
- was not a double pawn push, or the file 0..7 if it was, or\r
- EP_UNKNOWN if we don't know and want to allow all e.p. captures.\r
- Promotion moves generated are to Queen only.\r
-*/\r
-extern void GenPseudoLegal P((Board board, int flags, int epfile,\r
- MoveCallback callback, VOIDSTAR closure));\r
-\r
-/* Like GenPseudoLegal, but include castling moves and (unless \r
- F_IGNORE_CHECK is set in the flags) omit moves that would leave the\r
- king in check. The CASTLE_OK flags are true if castling is not yet\r
- ruled out by a move of the king or rook. Return TRUE if the player\r
- on move is currently in check and F_IGNORE_CHECK is not set.\r
-*/\r
-extern int GenLegal P((Board board, int flags, int epfile,\r
- char castlingRights[], /* [HGM] */\r
- MoveCallback callback, VOIDSTAR closure));\r
-\r
-/* If the player on move were to move from (rf, ff) to (rt, ft), would\r
- he leave himself in check? Or if rf == -1, is the player on move\r
- in check now? enPassant must be TRUE if the indicated move is an\r
- e.p. capture. The possibility of castling out of a check along the\r
- back rank is not accounted for (i.e., we still return nonzero), as\r
- this is illegal anyway. Return value is the number of times the\r
- king is in check. */ \r
-extern int CheckTest P((Board board, int flags,\r
- int rf, int ff, int rt, int ft, int enPassant));\r
-\r
-/* Is a move from (rf, ff) to (rt, ft) legal for the player whom the\r
- flags say is on move? Other arguments as in GenPseudoLegal.\r
- Returns the type of move made, taking promoChar into account. */\r
-extern ChessMove LegalityTest P((Board board, int flags, int epfile,\r
- char castlingRights[], /* [HGM] */\r
- int rf, int ff, int rt, int ft,\r
- int promoChar));\r
-\r
-#define MT_NONE 0\r
-#define MT_CHECK 1\r
-#define MT_CHECKMATE 2\r
-#define MT_STALEMATE 3\r
-\r
-/* Return MT_NONE, MT_CHECK, MT_CHECKMATE, or MT_STALEMATE */\r
-extern int MateTest P((Board board, int flags, int epfile,\r
- char castlingRights[])); /* [HGM] */\r
-\r
-typedef struct {\r
- /* Input data */\r
- ChessSquare pieceIn; /* EmptySquare if unknown */\r
- int rfIn, ffIn, rtIn, ftIn; /* -1 if unknown */\r
- int promoCharIn; /* NULLCHAR if unknown */\r
- /* Output data for matched move */\r
- ChessMove kind;\r
- ChessSquare piece;\r
- int rf, ff, rt, ft;\r
- int promoChar; /* 'q' if a promotion and promoCharIn was NULLCHAR */\r
- int count; /* Number of possibilities found */\r
-} DisambiguateClosure;\r
-\r
-/* Disambiguate a partially-known move */\r
-void Disambiguate P((Board board, int flags, int epfile,\r
- DisambiguateClosure *closure));\r
-\r
-\r
-/* Convert coordinates to normal algebraic notation.\r
- promoChar must be NULLCHAR or '.' if not a promotion.\r
-*/\r
-ChessMove CoordsToAlgebraic P((Board board, int flags, int epfile,\r
- int rf, int ff, int rt, int ft,\r
- int promoChar, char out[MOVE_LEN]));\r
+/*
+ * moves.h - Move generation and checking
+ *
+ * Copyright 1991 by Digital Equipment Corporation, Maynard,
+ * Massachusetts.
+ *
+ * Enhancements Copyright 1992-2001, 2002, 2003, 2004, 2005, 2006,
+ * 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Free
+ * Software Foundation, Inc.
+ *
+ * Enhancements Copyright 2005 Alessandro Scotti
+ *
+ * The following terms apply to Digital Equipment Corporation's copyright
+ * interest in XBoard:
+ * ------------------------------------------------------------------------
+ * All Rights Reserved
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted,
+ * provided that the above copyright notice appear in all copies and that
+ * both that copyright notice and this permission notice appear in
+ * supporting documentation, and that the name of Digital not be
+ * used in advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ *
+ * DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+ * DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ * ------------------------------------------------------------------------
+ *
+ * The following terms apply to the enhanced version of XBoard
+ * distributed by the Free Software Foundation:
+ * ------------------------------------------------------------------------
+ *
+ * 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 3 of the License, or (at
+ * your option) any later version.
+ *
+ * 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, see http://www.gnu.org/licenses/. *
+ *
+ *------------------------------------------------------------------------
+ ** See the file ChangeLog for a revision history. */
+
+#define SUFFIXES "'!"
+
+extern ChessSquare PromoPiece P((ChessMove moveType));
+extern ChessMove PromoCharToMoveType P((int whiteOnMove, int promoChar));
+extern char PieceSuffix 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 unsigned char pieceToChar[(int)EmptySquare+1];
+extern unsigned char pieceNickName[(int)EmptySquare];
+extern int promoPartner[(int)EmptySquare];
+extern char *pieceDesc[(int)EmptySquare];
+extern Board initialPosition;
+extern Boolean pieceDefs;
+
+typedef void (*MoveCallback) P((Board board, int flags, ChessMove kind,
+ int rf, int ff, int rt, int ft,
+ VOIDSTAR closure));
+
+/* Values for flags arguments */
+#define F_WHITE_ON_MOVE 1
+#define F_WHITE_KCASTLE_OK 2
+#define F_WHITE_QCASTLE_OK 4
+#define F_BLACK_KCASTLE_OK 8
+#define F_BLACK_QCASTLE_OK 16
+#define F_ALL_CASTLE_OK (F_WHITE_KCASTLE_OK | F_WHITE_QCASTLE_OK | \
+ F_BLACK_KCASTLE_OK | F_BLACK_QCASTLE_OK)
+#define F_IGNORE_CHECK 32
+#define F_KRIEGSPIEL_CAPTURE 64 /* pawns can try to capture invisible pieces */
+#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
+#define F_NULL_MOVE 0x400
+
+/* Special epfile values. [HGM] positive values are non-reversible moves! */
+#define EP_NONE (-6) /* [HGM] Tricky! order matters: */
+#define EP_UNKNOWN (-1) /* >= EP_UNKNOWN spoils rep-draw */
+#define EP_CAPTURE (-2) /* <= EP_NONE is reversible move */
+#define EP_PAWN_MOVE (-3)
+#define EP_IRON_LION (-4)
+#define EP_ROYAL_LION (-5)
+#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
+ legal, or if it would be legal except that it leaves the king in
+ check. In the arguments, epfile is EP_NONE if the previous move
+ was not a double pawn push, or the file 0..7 if it was, or
+ EP_UNKNOWN if we don't know and want to allow all e.p. captures.
+ Promotion moves generated are to Queen only.
+*/
+extern void GenPseudoLegal P((Board board, int flags,
+ MoveCallback callback, VOIDSTAR closure, ChessSquare filter));
+
+/* Like GenPseudoLegal, but include castling moves and (unless
+ F_IGNORE_CHECK is set in the flags) omit moves that would leave the
+ king in check. The CASTLE_OK flags are true if castling is not yet
+ ruled out by a move of the king or rook. Return TRUE if the player
+ on move is currently in check and F_IGNORE_CHECK is not set.
+*/
+extern int GenLegal P((Board board, int flags,
+ MoveCallback callback, VOIDSTAR closure, ChessSquare filter));
+
+/* If the player on move were to move from (rf, ff) to (rt, ft), would
+ he leave himself in check? Or if rf == -1, is the player on move
+ in check now? enPassant must be TRUE if the indicated move is an
+ e.p. capture. The possibility of castling out of a check along the
+ back rank is not accounted for (i.e., we still return nonzero), as
+ this is illegal anyway. Return value is the number of times the
+ king is in check. */
+extern int CheckTest P((Board board, int flags,
+ int rf, int ff, int rt, int ft, int enPassant));
+
+/* Is a move from (rf, ff) to (rt, ft) legal for the player whom the
+ 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 rf, int ff, int rt, int ft,
+ int promoChar));
+
+#define MT_NONE 0
+#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));
+
+typedef struct {
+ /* Input data */
+ ChessSquare pieceIn; /* EmptySquare if unknown */
+ int rfIn, ffIn, rtIn, ftIn; /* -1 if unknown */
+ int promoCharIn; /* NULLCHAR if unknown */
+ /* Output data for matched move */
+ ChessMove kind;
+ ChessSquare piece;
+ int rf, ff, rt, ft;
+ int promoChar; /* 'q' if a promotion and promoCharIn was NULLCHAR */
+ int count; /* Number of possibilities found */
+ int captures; /* [HGM] oneclick: number of matching captures */
+} DisambiguateClosure;
+
+/* Disambiguate a partially-known move */
+void Disambiguate P((Board board, int flags, DisambiguateClosure *closure));
+
+
+/* Convert coordinates to normal algebraic notation.
+ promoChar must be NULLCHAR or '.' if not a promotion.
+*/
+ChessMove CoordsToAlgebraic P((Board board, int flags,
+ int rf, int ff, int rt, int ft,
+ int promoChar, char out[MOVE_LEN]));
+
+extern int quickFlag, killX, killY, kill2X, kill2Y, legNr;
projects / xboard.git / blobdiff