mirror of
https://salsa.debian.org/games-team/bsdgames
synced 2024-06-08 17:30:46 +00:00
114 lines
2.9 KiB
C
114 lines
2.9 KiB
C
/* $NetBSD: allow.c,v 1.5 2003/08/07 09:36:56 agc Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1980, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)allow.c 8.1 (Berkeley) 5/31/93";
|
|
#else
|
|
__RCSID("$NetBSD: allow.c,v 1.5 2003/08/07 09:36:56 agc Exp $");
|
|
#endif
|
|
#endif /* not lint */
|
|
|
|
#include "back.h"
|
|
|
|
int
|
|
movallow()
|
|
{
|
|
int i, m, iold;
|
|
int r;
|
|
|
|
if (d0)
|
|
swap;
|
|
m = (D0 == D1 ? 4 : 2);
|
|
for (i = 0; i < 4; i++)
|
|
p[i] = bar;
|
|
i = iold = 0;
|
|
while (i < m) {
|
|
if (*offptr == 15)
|
|
break;
|
|
h[i] = 0;
|
|
if (board[bar]) {
|
|
if (i == 1 || m == 4)
|
|
g[i] = bar + cturn * D1;
|
|
else
|
|
g[i] = bar + cturn * D0;
|
|
if ((r = makmove(i)) != 0) {
|
|
if (d0 || m == 4)
|
|
break;
|
|
swap;
|
|
movback(i);
|
|
if (i > iold)
|
|
iold = i;
|
|
for (i = 0; i < 4; i++)
|
|
p[i] = bar;
|
|
i = 0;
|
|
} else
|
|
i++;
|
|
continue;
|
|
}
|
|
if ((p[i] += cturn) == home) {
|
|
if (i > iold)
|
|
iold = i;
|
|
if (m == 2 && i) {
|
|
movback(i);
|
|
p[i--] = bar;
|
|
if (p[i] != bar)
|
|
continue;
|
|
else
|
|
break;
|
|
}
|
|
if (d0 || m == 4)
|
|
break;
|
|
swap;
|
|
movback(i);
|
|
for (i = 0; i < 4; i++)
|
|
p[i] = bar;
|
|
i = 0;
|
|
continue;
|
|
}
|
|
if (i == 1 || m == 4)
|
|
g[i] = p[i] + cturn * D1;
|
|
else
|
|
g[i] = p[i] + cturn * D0;
|
|
if (g[i] * cturn > home) {
|
|
if (*offptr >= 0)
|
|
g[i] = home;
|
|
else
|
|
continue;
|
|
}
|
|
if (board[p[i]] * cturn > 0 && (r = makmove(i)) == 0)
|
|
i++;
|
|
}
|
|
movback(i);
|
|
return (iold > i ? iold : i);
|
|
}
|