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Initial revision
git-svn-id: file:///srv/svn/joey/bsdgames-trunk@5086 a4a2c43b-8ac3-0310-8836-e0e880c912e2
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joey
179
backgammon/common_source/one.c
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179
backgammon/common_source/one.c
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/* $NetBSD: one.c,v 1.4 1997/10/10 08:59:47 lukem 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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[] = "@(#)one.c 8.1 (Berkeley) 5/31/93";
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#else
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__RCSID("$NetBSD: one.c,v 1.4 1997/10/10 08:59:47 lukem 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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makmove(i)
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int i;
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{
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int n, d;
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int max;
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d = d0;
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n = abs(g[i] - p[i]);
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max = (*offptr < 0 ? 7 : last());
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if (board[p[i]] * cturn <= 0)
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return (checkd(d) + 2);
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if (g[i] != home && board[g[i]] * cturn < -1)
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return (checkd(d) + 3);
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if (i || D0 == D1) {
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if (n == max ? D1 < n : D1 != n)
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return (checkd(d) + 1);
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} else {
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if (n == max ? D0 < n && D1 < n : D0 != n && D1 != n)
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return (checkd(d) + 1);
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if (n == max ? D0 < n : D0 != n) {
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if (d0)
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return (checkd(d) + 1);
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swap;
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}
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}
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if (g[i] == home && *offptr < 0)
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return (checkd(d) + 4);
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h[i] = 0;
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board[p[i]] -= cturn;
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if (g[i] != home) {
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if (board[g[i]] == -cturn) {
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board[home] -= cturn;
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board[g[i]] = 0;
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h[i] = 1;
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if (abs(bar - g[i]) < 7) {
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(*inopp)--;
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if (*offopp >= 0)
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*offopp -= 15;
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}
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}
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board[g[i]] += cturn;
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if (abs(home - g[i]) < 7 && abs(home - p[i]) > 6) {
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(*inptr)++;
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if (*inptr + *offptr == 0)
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*offptr += 15;
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}
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} else {
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(*offptr)++;
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(*inptr)--;
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}
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return (0);
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}
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void
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moverr(i)
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int i;
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{
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int j;
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if (tflag)
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curmove(20, 0);
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else
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writec('\n');
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writel("Error: ");
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for (j = 0; j <= i; j++) {
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wrint(p[j]);
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writec('-');
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wrint(g[j]);
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if (j < i)
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writec(',');
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}
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writel("... ");
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movback(i);
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}
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int
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checkd(d)
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int d;
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{
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if (d0 != d)
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swap;
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return (0);
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}
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int
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last()
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{
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int i;
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for (i = home - 6 * cturn; i != home; i += cturn)
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if (board[i] * cturn > 0)
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return (abs(home - i));
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return (-1);
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}
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void
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movback(i)
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int i;
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{
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int j;
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for (j = i - 1; j >= 0; j--)
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backone(j);
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}
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void
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backone(i)
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int i;
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{
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board[p[i]] += cturn;
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if (g[i] != home) {
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board[g[i]] -= cturn;
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if (abs(g[i] - home) < 7 && abs(p[i] - home) > 6) {
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(*inptr)--;
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if (*inptr + *offptr < 15 && *offptr >= 0)
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*offptr -= 15;
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}
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} else {
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(*offptr)--;
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(*inptr)++;
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}
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if (h[i]) {
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board[home] += cturn;
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board[g[i]] = -cturn;
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if (abs(bar - g[i]) < 7) {
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(*inopp)++;
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if (*inopp + *offopp == 0)
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*offopp += 15;
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}
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}
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}
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