games/trek/systemname.c

   1 /*      $NetBSD: systemname.c,v 1.8 2009/05/24 20:39:43 dholland Exp $  */
   2
   3 /*
   4  * Copyright (c) 1980, 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[] = "@(#)systemname.c        8.1 (Berkeley) 5/31/93";
  36 #else
  37 __RCSID("$NetBSD: systemname.c,v 1.8 2009/05/24 20:39:43 dholland Exp $");
  38 #endif
  39 #endif /* not lint */
  40
  41 #include <stddef.h>
  42 #include "trek.h"
  43
  44 /*
  45 **  RETRIEVE THE STARSYSTEM NAME
  46 **
  47 **      Very straightforward, this routine just gets the starsystem
  48 **      name.  It returns zero if none in the specified quadrant
  49 **      (which, by the way, is passed it).
  50 **
  51 **      This routine knows all about such things as distressed
  52 **      starsystems, etc.
  53 */
  54
  55 const char *
  56 systemname(const struct quad *q1)
  57 {
  58         const struct quad       *q;
  59         int             i;
  60
  61         q = q1;
  62
  63         i = q->qsystemname;
  64         if (i & Q_DISTRESSED)
  65                 i = Event[i & Q_SYSTEM].systemname;
  66
  67         i &= Q_SYSTEM;
  68         if (i == 0)
  69                 return NULL;
  70         return (Systemname[i]);
  71 }