games/trek/capture.c

   1 /*      @(#)capture.c   8.1 (Berkeley) 5/31/93                          */
   2 /*      $NetBSD: capture.c,v 1.12 2009/08/12 08:54:54 dholland Exp $    */
   3
   4 /*
   5  * Copyright (c) 1980, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #include <stdio.h>
  34 #include "trek.h"
  35
  36 static struct kling *selectklingon(void);
  37
  38 /*
  39 **  Ask a Klingon To Surrender
  40 **
  41 **      (Fat chance)
  42 **
  43 **      The Subspace Radio is needed to ask a Klingon if he will kindly
  44 **      surrender.  A random Klingon from the ones in the quadrant is
  45 **      chosen.
  46 **
  47 **      The Klingon is requested to surrender.  The probability of this
  48 **      is a function of that Klingon's remaining power, our power,
  49 **      etc.
  50 */
  51
  52 /*ARGSUSED*/
  53 void
  54 capture(int v __unused)
  55 {
  56         int             i;
  57         struct kling    *k;
  58         double                  x;
  59
  60         /* check for not cloaked */
  61         if (Ship.cloaked) {
  62                 printf("Ship-ship communications out when cloaked\n");
  63                 return;
  64         }
  65         if (damaged(SSRADIO)) {
  66                 out(SSRADIO);
  67                 return;
  68         }
  69         /* find out if there are any at all */
  70         if (Etc.nkling <= 0) {
  71                 printf("Uhura: Getting no response, sir\n");
  72                 return;
  73         }
  74
  75         /* if there is more than one Klingon, find out which one */
  76         k = selectklingon();
  77         Move.free = 0;
  78         Move.time = 0.05;
  79
  80         /* check out that Klingon */
  81         k->srndreq++;
  82         x = Param.klingpwr;
  83         x *= Ship.energy;
  84         x /= k->power * Etc.nkling;
  85         x *= Param.srndrprob;
  86         i = x;
  87 #ifdef xTRACE
  88         if (Trace)
  89                 printf("Prob = %d (%.4f)\n", i, x);
  90 #endif
  91         if (i > ranf(100)) {
  92                 /* guess what, he surrendered!!! */
  93                 printf("Klingon at %d,%d surrenders\n", k->x, k->y);
  94                 i = ranf(Param.klingcrew);
  95                 if ( i > 0 )
  96                         printf("%d klingons commit suicide rather than be "
  97                                "taken captive\n", Param.klingcrew - i);
  98                 if (i > Ship.brigfree)
  99                         i = Ship.brigfree;
 100                 Ship.brigfree -= i;
 101                 printf("%d captives taken\n", i);
 102                 killk(k->x, k->y);
 103                 return;
 104         }
 105
 106         /* big surprise, he refuses to surrender */
 107         printf("Fat chance, captain\n");
 108         return;
 109 }
 110
 111
 112 /*
 113 **  SELECT A KLINGON
 114 **
 115 **      Cruddy, just takes one at random.  Should ask the captain.
 116 */
 117
 118 static struct kling *
 119 selectklingon(void)
 120 {
 121         int             i;
 122
 123         if (Etc.nkling < 2)
 124                 i = 0;
 125         else
 126                 i = ranf(Etc.nkling);
 127         return (&Etc.klingon[i]);
 128 }