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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#)dr_main.c        8.2 (Berkeley) 4/16/94
  34  * $FreeBSD: src/games/sail/dr_main.c,v 1.4 1999/11/30 03:49:33 billf Exp $
  35  * $DragonFly: src/games/sail/dr_main.c,v 1.3 2006/09/03 17:33:13 pavalos Exp $
  36  */
  37
  38 #include "driver.h"
  39
  40 int
  41 dr_main(void)
  42 {
  43         int n;
  44         struct ship *sp;
  45         int nat[NNATION];
  46         int value = 0;
  47
  48         signal(SIGINT, SIG_IGN);
  49         signal(SIGQUIT, SIG_IGN);
  50         signal(SIGTSTP, SIG_IGN);
  51         if (issetuid)
  52                 setuid(geteuid());
  53         if (game < 0 || game >= NSCENE) {
  54                 fprintf(stderr, "DRIVER: Bad game number %d\n", game);
  55                 exit(1);
  56         }
  57         cc = &scene[game];
  58         ls = SHIP(cc->vessels);
  59         if (sync_open() < 0) {
  60                 perror("driver: syncfile");
  61                 exit(1);
  62         }
  63         for (n = 0; n < NNATION; n++)
  64                 nat[n] = 0;
  65         foreachship(sp) {
  66                 if (sp->file == NULL &&
  67                     (sp->file = (struct File *)calloc(1, sizeof (struct File))) == NULL) {
  68                         fprintf(stderr, "DRIVER: Out of memory.\n");
  69                         exit(1);
  70                 }
  71                 sp->file->index = sp - SHIP(0);
  72                 sp->file->loadL = L_ROUND;
  73                 sp->file->loadR = L_ROUND;
  74                 sp->file->readyR = R_LOADED|R_INITIAL;
  75                 sp->file->readyL = R_LOADED|R_INITIAL;
  76                 sp->file->stern = nat[sp->nationality]++;
  77                 sp->file->dir = sp->shipdir;
  78                 sp->file->row = sp->shiprow;
  79                 sp->file->col = sp->shipcol;
  80         }
  81         windspeed = cc->windspeed;
  82         winddir = cc->winddir;
  83         people = 0;
  84         for (;;) {
  85                 sleep(7);
  86                 if (Sync() < 0) {
  87                         value = 1;
  88                         break;
  89                 }
  90                 if (next() < 0)
  91                         break;
  92                 unfoul();
  93                 checkup();
  94                 prizecheck();
  95                 moveall();
  96                 thinkofgrapples();
  97                 boardcomp();
  98                 compcombat();
  99                 resolve();
 100                 reload();
 101                 checksails();
 102                 if (Sync() < 0) {
 103                         value = 1;
 104                         break;
 105                 }
 106         }
 107         sync_close(1);
 108         return value;
 109 }