xref: /netbsd/games/sail/parties.c (revision bf9ec67e)
1 /*	$NetBSD: parties.c,v 1.10 2001/02/05 01:10:10 christos 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. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *	This product includes software developed by the University of
18  *	California, Berkeley and its contributors.
19  * 4. Neither the name of the University nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  */
35 
36 #include <sys/cdefs.h>
37 #ifndef lint
38 #if 0
39 static char sccsid[] = "@(#)parties.c	8.2 (Berkeley) 4/28/95";
40 #else
41 __RCSID("$NetBSD: parties.c,v 1.10 2001/02/05 01:10:10 christos Exp $");
42 #endif
43 #endif /* not lint */
44 
45 #include <sys/types.h>
46 #include "extern.h"
47 
48 int
49 meleeing(struct ship *from, struct ship *to)
50 {
51 	struct BP *p = from->file->OBP;
52 	struct BP *q = p + NBP;
53 
54 	for (; p < q; p++)
55 		if (p->turnsent && p->toship == to)
56 			return 1;
57 	return 0;
58 }
59 
60 int
61 boarding(struct ship *from, int isdefense)
62 {
63 	struct BP *p = isdefense ? from->file->DBP : from->file->OBP;
64 	struct BP *q = p + NBP;
65 
66 	for (; p < q; p++)
67 		if (p->turnsent)
68 			return 1;
69 	return 0;
70 }
71 
72 void
73 unboard(struct ship *ship, struct ship *to, int isdefense)
74 {
75 	struct BP *p = isdefense ? ship->file->DBP : ship->file->OBP;
76 	int n;
77 
78 	for (n = 0; n < NBP; p++, n++)
79 		if (p->turnsent && (p->toship == to || isdefense || ship == to))
80 			Write(isdefense ? W_DBP : W_OBP, ship, n, 0, 0, 0);
81 }
82