xref: /dragonfly/games/trek/systemname.c (revision 6ca88057)
1 /*-
2  * Copyright (c) 1980, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
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. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * @(#)systemname.c	8.1 (Berkeley) 5/31/93
30  * $FreeBSD: src/games/trek/systemname.c,v 1.4 1999/11/30 03:49:55 billf Exp $
31  * $DragonFly: src/games/trek/systemname.c,v 1.3 2006/09/07 21:19:44 pavalos Exp $
32  */
33 
34 #include "trek.h"
35 
36 /*
37 **  RETRIEVE THE STARSYSTEM NAME
38 **
39 **	Very straightforward, this routine just gets the starsystem
40 **	name.  It returns zero if none in the specified quadrant
41 **	(which, by the way, is passed it).
42 **
43 **	This routine knows all about such things as distressed
44 **	starsystems, etc.
45 */
46 
47 const char *
48 systemname(struct quad *q1)
49 {
50 	struct quad	*q;
51 	int		i;
52 
53 	q = q1;
54 
55 	i = q->qsystemname;
56 	if (i & Q_DISTRESSED)
57 		i = Event[i & Q_SYSTEM].systemname;
58 
59 	i &= Q_SYSTEM;
60 	if (i == 0)
61 		return (NULL);
62 	return (Systemname[i]);
63 }
64