games/trek/systemname.c

   1 /*      @(#)systemname.c        8.1 (Berkeley) 5/31/93                  */
   2 /*      $NetBSD: systemname.c,v 1.9 2009/05/25 00:05:56 dholland 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 <stddef.h>
  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(const struct quad *q1)
  49 {
  50         const 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 }