1 /* $NetBSD: dr_4.c,v 1.15 2009/03/14 22:52:52 dholland Exp $ */
2
3 /*
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)dr_4.c 8.2 (Berkeley) 4/28/95";
36 #else
37 __RCSID("$NetBSD: dr_4.c,v 1.15 2009/03/14 22:52:52 dholland Exp $");
38 #endif
39 #endif /* not lint */
40
41 #include <stdlib.h>
42 #include "extern.h"
43
44 void
ungrap(struct ship * from,struct ship * to)45 ungrap(struct ship *from, struct ship *to)
46 {
47 int k;
48 char friend;
49
50 if ((k = grappled2(from, to)) == 0)
51 return;
52 friend = capship(from)->nationality == capship(to)->nationality;
53 while (--k >= 0) {
54 if (friend || dieroll() < 3) {
55 cleangrapple(from, to, 0);
56 makesignal(from, "ungrappling $$", to);
57 }
58 }
59 }
60
61 void
grap(struct ship * from,struct ship * to)62 grap(struct ship *from, struct ship *to)
63 {
64 if (capship(from)->nationality != capship(to)->nationality &&
65 dieroll() > 2)
66 return;
67 send_grap(from, to->file->index);
68 send_grap(to, from->file->index);
69 makesignal(from, "grappled with $$", to);
70 }
71