trek/autover.c

   1 /*
   2  * Copyright (c) 1980 Regents of the University of California.
   3  * 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
  34 #ifndef lint
  35 /*static char sccsid[] = "from: @(#)autover.c   5.5 (Berkeley) 6/1/90";*/
  36 static char rcsid[] = "$Id: autover.c,v 1.2 1993/08/01 18:50:52 mycroft Exp $";
  37 #endif /* not lint */
  38
  39 # include       "trek.h"
  40
  41 /*
  42 **  Automatic Override
  43 **
  44 **      If we should be so unlucky as to be caught in a quadrant
  45 **      with a supernova in it, this routine is called.  It is
  46 **      called from checkcond().
  47 **
  48 **      It sets you to a random warp (guaranteed to be over 6.0)
  49 **      and starts sending you off "somewhere" (whereever that is).
  50 **
  51 **      Please note that it is VERY important that you reset your
  52 **      warp speed after the automatic override is called.  The new
  53 **      warp factor does not stay in effect for just this routine.
  54 **
  55 **      This routine will never try to send you more than sqrt(2)
  56 **      quadrants, since that is all that is needed.
  57 */
  58
  59 autover()
  60 {
  61         double                  dist;
  62         register int            course;
  63
  64         printf("\07RED ALERT:  The %s is in a supernova quadrant\n", Ship.shipname);
  65         printf("***  Emergency override attempts to hurl %s to safety\n", Ship.shipname);
  66         /* let's get our ass out of here */
  67         Ship.warp = 6.0 + 2.0 * franf();
  68         Ship.warp2 = Ship.warp * Ship.warp;
  69         Ship.warp3 = Ship.warp2 * Ship.warp;
  70         dist = 0.75 * Ship.energy / (Ship.warp3 * (Ship.shldup + 1));
  71         if (dist > 1.4142)
  72                 dist = 1.4142;
  73         course = ranf(360);
  74         Etc.nkling = -1;
  75         Ship.cond = RED;
  76         warp(-1, course, dist);
  77         attack(0);
  78 }