Initial import, 0.1 + pk 0.2.4-B1

[unix-history] / games / sail / pl_1.c

/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by the University of
*      California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#ifndef lint
static char sccsid[] = "@(#)pl_1.c      5.5 (Berkeley) 2/28/91";
#endif /* not lint */

#include "player.h"
#include <sys/types.h>
#include <sys/wait.h>

/*
* If we get here before a ship is chosen, then ms == 0 and
* we don't want to update the score file, or do any Write's either.
* We can assume the sync file is already created and may need
* to be removed.
* Of course, we don't do any more Sync()'s if we got here
* because of a Sync() failure.
*/
leave(conditions)
int conditions;
{
       (void) signal(SIGHUP, SIG_IGN);
       (void) signal(SIGINT, SIG_IGN);
       (void) signal(SIGQUIT, SIG_IGN);
       (void) signal(SIGALRM, SIG_IGN);
       (void) signal(SIGCHLD, SIG_IGN);

       if (done_curses) {
               Signal("It looks like you've had it!",
                       (struct ship *)0);
               switch (conditions) {
               case LEAVE_QUIT:
                       break;
               case LEAVE_CAPTURED:
                       Signal("Your ship was captured.",
                               (struct ship *)0);
                       break;
               case LEAVE_HURRICAN:
                       Signal("Hurricane!  All ships destroyed.",
                               (struct ship *)0);
                       break;
               case LEAVE_DRIVER:
                       Signal("The driver died.", (struct ship *)0);
                       break;
               case LEAVE_SYNC:
                       Signal("Synchronization error.", (struct ship *)0);
                       break;
               default:
                       Signal("A funny thing happened (%d).",
                               (struct ship *)0, conditions);
               }
       } else {
               switch (conditions) {
               case LEAVE_QUIT:
                       break;
               case LEAVE_DRIVER:
                       printf("The driver died.\n");
                       break;
               case LEAVE_FORK:
                       perror("fork");
                       break;
               case LEAVE_SYNC:
                       printf("Synchronization error\n.");
                       break;
               default:
                       printf("A funny thing happened (%d).\n",
                               conditions);
               }
       }

       if (ms != 0) {
               log(ms);
               if (conditions != LEAVE_SYNC) {
                       makesignal(ms, "Captain %s relinquishing.",
                               (struct ship *)0, mf->captain);
                       Write(W_END, ms, 0, 0, 0, 0, 0);
                       (void) Sync();
               }
       }
       sync_close(!hasdriver);
       cleanupscreen();
       exit(0);
}

void
choke()
{
       leave(LEAVE_QUIT);
}

void
child()
{
       union wait status;
       int pid;

       (void) signal(SIGCHLD, SIG_IGN);
       do {
               pid = wait3((int *)&status, WNOHANG, (struct rusage *)0);
               if (pid < 0 || pid > 0 && !WIFSTOPPED(status))
                       hasdriver = 0;
       } while (pid > 0);
       (void) signal(SIGCHLD, child);
}