games/trek/autover.c

   1 /*-
   2  * Copyright (c) 1980, 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  * @(#)autover.c        8.1 (Berkeley) 5/31/93
  30  * $FreeBSD: src/games/trek/autover.c,v 1.4 1999/11/30 03:49:43 billf Exp $
  31  * $DragonFly: src/games/trek/autover.c,v 1.3 2006/09/07 21:19:44 pavalos Exp $
  32  */
  33
  34 #include "trek.h"
  35
  36 /*
  37 **  Automatic Override
  38 **
  39 **      If we should be so unlucky as to be caught in a quadrant
  40 **      with a supernova in it, this routine is called.  It is
  41 **      called from checkcond().
  42 **
  43 **      It sets you to a random warp (guaranteed to be over 6.0)
  44 **      and starts sending you off "somewhere" (whereever that is).
  45 **
  46 **      Please note that it is VERY important that you reset your
  47 **      warp speed after the automatic override is called.  The new
  48 **      warp factor does not stay in effect for just this routine.
  49 **
  50 **      This routine will never try to send you more than sqrt(2)
  51 **      quadrants, since that is all that is needed.
  52 */
  53
  54 void
  55 autover(void)
  56 {
  57         double                  dist;
  58         int             course;
  59
  60         printf("\07RED ALERT:  The %s is in a supernova quadrant\n",
  61                 Ship.shipname);
  62         printf("***  Emergency override attempts to hurl %s to safety\n",
  63                 Ship.shipname);
  64         /* let's get our ass out of here */
  65         Ship.warp = 6.0 + 2.0 * franf();
  66         Ship.warp2 = Ship.warp * Ship.warp;
  67         Ship.warp3 = Ship.warp2 * Ship.warp;
  68         dist = 0.75 * Ship.energy / (Ship.warp3 * (Ship.shldup + 1));
  69         if (dist > 1.4142)
  70                 dist = 1.4142;
  71         course = ranf(360);
  72         Etc.nkling = -1;
  73         Ship.cond = RED;
  74         warp(-1, course, dist);
  75         attack(0);
  76 }