xref: /openbsd/games/trek/systemname.c (revision 76d0caae)
1 /*	$OpenBSD: systemname.c,v 1.7 2016/01/07 14:37:51 mestre Exp $	*/
2 /*	$NetBSD: systemname.c,v 1.3 1995/04/22 10:59:32 cgd Exp $	*/
3 
4 /*
5  * Copyright (c) 1980, 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 "trek.h"
34 
35 /*
36 **  RETRIEVE THE STARSYSTEM NAME
37 **
38 **	Very straightforward, this routine just gets the starsystem
39 **	name.  It returns zero if none in the specified quadrant
40 **	(which, by the way, is passed it).
41 **
42 **	This routine knows all about such things as distressed
43 **	starsystems, etc.
44 */
45 
46 const char *
47 systemname(const struct quad *q1)
48 {
49 	const struct quad	*q;
50 	int			i;
51 
52 	q = q1;
53 
54 	i = q->qsystemname;
55 	if (i & Q_DISTRESSED)
56 		i = Event[i & Q_SYSTEM].systemname;
57 
58 	i &= Q_SYSTEM;
59 	if (i == 0)
60 		return (0);
61 	return (Systemname[i]);
62 }
63