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688fd64b52
player to skip a turn near the end of the game. Closes: #368771 * Also some tutorial grammar fixes. * Patch from Alan Curry to backgammon to make movallow() try again with dice swapped when it finds that there is no possible move with the second die after the first die was used to move a man off the bar. Closes: #185100 git-svn-id: file:///srv/svn/joey/trunk/src/packages/bsdgames@12456 a4a2c43b-8ac3-0310-8836-e0e880c912e2
116 lines
3.0 KiB
C
116 lines
3.0 KiB
C
/* $NetBSD: allow.c,v 1.5 2003/08/07 09:36:56 agc Exp $ */
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/*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)allow.c 8.1 (Berkeley) 5/31/93";
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#else
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__RCSID("$NetBSD: allow.c,v 1.5 2003/08/07 09:36:56 agc Exp $");
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#endif
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#endif /* not lint */
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#include "back.h"
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int
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movallow()
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{
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int i, m, iold;
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int r;
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if (d0)
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swap;
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m = (D0 == D1 ? 4 : 2);
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for (i = 0; i < 4; i++)
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p[i] = bar;
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i = iold = 0;
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while (i < m) {
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if (*offptr == 15)
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break;
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h[i] = 0;
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if (board[bar]) {
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if (i == 1 || m == 4)
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g[i] = bar + cturn * D1;
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else
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g[i] = bar + cturn * D0;
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if ((r = makmove(i)) != 0) {
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if (d0 || m == 4)
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break;
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swap;
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movback(i);
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if (i > iold)
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iold = i;
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for (i = 0; i < 4; i++)
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p[i] = bar;
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i = 0;
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} else
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i++;
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continue;
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}
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if ((p[i] += cturn) == home) {
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if (i > iold)
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iold = i;
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if (m == 2 && i) {
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movback(i);
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p[i--] = bar;
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if (p[i] != bar)
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continue;
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else if (d0)
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break;
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swap;
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continue;
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}
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if (d0 || m == 4)
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break;
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swap;
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movback(i);
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for (i = 0; i < 4; i++)
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p[i] = bar;
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i = 0;
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continue;
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}
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if (i == 1 || m == 4)
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g[i] = p[i] + cturn * D1;
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else
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g[i] = p[i] + cturn * D0;
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if (g[i] * cturn > home) {
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if (*offptr >= 0)
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g[i] = home;
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else
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continue;
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}
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if (board[p[i]] * cturn > 0 && (r = makmove(i)) == 0)
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i++;
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}
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movback(i);
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return (iold > i ? iold : i);
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}
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