2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 static char sccsid[] = "@(#)one.c 8.1 (Berkeley) 5/31/93";
38 static const char rcsid[] =
39 "$FreeBSD: src/games/backgammon/common_source/one.c,v 1.5 1999/11/30 03:48:27 billf Exp $";
53 max = (*offptr < 0? 7: last());
54 if (board[p[i]]*cturn <= 0)
56 if (g[i] != home && board[g[i]]*cturn < -1)
59 if (n == max? D1 < n: D1 != n)
62 if (n == max? D0 < n && D1 < n: D0 != n && D1 != n)
64 if (n == max? D0 < n: D0 != n) {
70 if (g[i] == home && *offptr < 0)
75 if (board[g[i]] == -cturn) {
79 if (abs(bar-g[i]) < 7) {
86 if (abs(home-g[i]) < 7 && abs(home-p[i]) > 6) {
88 if (*inptr+*offptr == 0)
109 for (j = 0; j <= i; j++) {
133 for (i = home-6*cturn; i != home; i += cturn)
134 if (board[i]*cturn > 0)
135 return (abs(home-i));
144 for (j = i-1; j >= 0; j--)
152 board[p[i]] += cturn;
154 board[g[i]] -= cturn;
155 if (abs(g[i]-home) < 7 && abs(p[i]-home) > 6) {
157 if (*inptr+*offptr < 15 && *offptr >= 0)
165 board[home] += cturn;
166 board[g[i]] = -cturn;
167 if (abs(bar-g[i]) < 7) {
169 if (*inopp+*offopp == 0)