1 /* $OpenBSD: dr_4.c,v 1.5 2016/01/08 20:26:33 mestre Exp $ */
2 /* $NetBSD: dr_4.c,v 1.3 1995/04/22 10:36:50 cgd Exp $ */
3
4 /*
5 * Copyright (c) 1983, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #include <stdlib.h>
34
35 #include "extern.h"
36
37 void
ungrap(struct ship * from,struct ship * to)38 ungrap(struct ship *from, struct ship *to)
39 {
40 int k;
41 char friend;
42
43 if ((k = grappled2(from, to)) == 0)
44 return;
45 friend = capship(from)->nationality == capship(to)->nationality;
46 while (--k >= 0) {
47 if (friend || die() < 3) {
48 cleangrapple(from, to, 0);
49 makesignal(from, "ungrappling $$", to);
50 }
51 }
52 }
53
54 void
grap(struct ship * from,struct ship * to)55 grap(struct ship *from, struct ship *to)
56 {
57 if (capship(from)->nationality != capship(to)->nationality && die() > 2)
58 return;
59 Write(W_GRAP, from, to->file->index, 0, 0, 0);
60 Write(W_GRAP, to, from->file->index, 0, 0, 0);
61 makesignal(from, "grappled with $$", to);
62 }
63