games/sail/dr_main.c

   1 /*-
   2  * Copyright (c) 1983, 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  * @(#)dr_main.c        8.2 (Berkeley) 4/16/94
  30  * $FreeBSD: src/games/sail/dr_main.c,v 1.4 1999/11/30 03:49:33 billf Exp $
  31  * $DragonFly: src/games/sail/dr_main.c,v 1.3 2006/09/03 17:33:13 pavalos Exp $
  32  */
  33
  34 #include "driver.h"
  35
  36 int
  37 dr_main(void)
  38 {
  39         int n;
  40         struct ship *sp;
  41         int nat[NNATION];
  42         int value = 0;
  43
  44         signal(SIGINT, SIG_IGN);
  45         signal(SIGQUIT, SIG_IGN);
  46         signal(SIGTSTP, SIG_IGN);
  47         if (issetuid)
  48                 setuid(geteuid());
  49         if (game < 0 || game >= NSCENE) {
  50                 fprintf(stderr, "DRIVER: Bad game number %d\n", game);
  51                 exit(1);
  52         }
  53         cc = &scene[game];
  54         ls = SHIP(cc->vessels);
  55         if (sync_open() < 0) {
  56                 perror("driver: syncfile");
  57                 exit(1);
  58         }
  59         for (n = 0; n < NNATION; n++)
  60                 nat[n] = 0;
  61         foreachship(sp) {
  62                 if (sp->file == NULL &&
  63                     (sp->file = calloc(1, sizeof (struct File))) == NULL) {
  64                         fprintf(stderr, "DRIVER: Out of memory.\n");
  65                         exit(1);
  66                 }
  67                 sp->file->index = sp - SHIP(0);
  68                 sp->file->loadL = L_ROUND;
  69                 sp->file->loadR = L_ROUND;
  70                 sp->file->readyR = R_LOADED|R_INITIAL;
  71                 sp->file->readyL = R_LOADED|R_INITIAL;
  72                 sp->file->stern = nat[sp->nationality]++;
  73                 sp->file->dir = sp->shipdir;
  74                 sp->file->row = sp->shiprow;
  75                 sp->file->col = sp->shipcol;
  76         }
  77         windspeed = cc->windspeed;
  78         winddir = cc->winddir;
  79         people = 0;
  80         for (;;) {
  81                 sleep(7);
  82                 if (Sync() < 0) {
  83                         value = 1;
  84                         break;
  85                 }
  86                 if (next() < 0)
  87                         break;
  88                 unfoul();
  89                 checkup();
  90                 prizecheck();
  91                 moveall();
  92                 thinkofgrapples();
  93                 boardcomp();
  94                 compcombat();
  95                 resolve();
  96                 reload();
  97                 checksails();
  98                 if (Sync() < 0) {
  99                         value = 1;
 100                         break;
 101                 }
 102         }
 103         sync_close(1);
 104         return value;
 105 }