trek/capture.c

   1 /*      $NetBSD: capture.c,v 1.4 1997/10/12 21:24:29 christos Exp $     */
   2
   3 /*
   4  * Copyright (c) 1980, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 #ifndef lint
  38 #if 0
  39 static char sccsid[] = "@(#)capture.c   8.1 (Berkeley) 5/31/93";
  40 #else
  41 __RCSID("$NetBSD: capture.c,v 1.4 1997/10/12 21:24:29 christos Exp $");
  42 #endif
  43 #endif /* not lint */
  44
  45 #include <stdio.h>
  46 #include "trek.h"
  47
  48 /*
  49 **  Ask a Klingon To Surrender
  50 **
  51 **      (Fat chance)
  52 **
  53 **      The Subspace Radio is needed to ask a Klingon if he will kindly
  54 **      surrender.  A random Klingon from the ones in the quadrant is
  55 **      chosen.
  56 **
  57 **      The Klingon is requested to surrender.  The probability of this
  58 **      is a function of that Klingon's remaining power, our power,
  59 **      etc.
  60 */
  61
  62 /*ARGSUSED*/
  63 void
  64 capture(v)
  65         int v;
  66 {
  67         int             i;
  68         struct kling    *k;
  69         double                  x;
  70
  71         /* check for not cloaked */
  72         if (Ship.cloaked)
  73         {
  74                 printf("Ship-ship communications out when cloaked\n");
  75                 return;
  76         }
  77         if (damaged(SSRADIO)) {
  78                 out(SSRADIO);
  79                 return;
  80         }
  81         /* find out if there are any at all */
  82         if (Etc.nkling <= 0)
  83         {
  84                 printf("Uhura: Getting no response, sir\n");
  85                 return;
  86         }
  87
  88         /* if there is more than one Klingon, find out which one */
  89         k = selectklingon();
  90         Move.free = 0;
  91         Move.time = 0.05;
  92
  93         /* check out that Klingon */
  94         k->srndreq++;
  95         x = Param.klingpwr;
  96         x *= Ship.energy;
  97         x /= k->power * Etc.nkling;
  98         x *= Param.srndrprob;
  99         i = x;
 100 #       ifdef xTRACE
 101         if (Trace)
 102                 printf("Prob = %d (%.4f)\n", i, x);
 103 #       endif
 104         if (i > ranf(100))
 105         {
 106                 /* guess what, he surrendered!!! */
 107                 printf("Klingon at %d,%d surrenders\n", k->x, k->y);
 108                 i = ranf(Param.klingcrew);
 109                 if ( i > 0 )
 110                         printf("%d klingons commit suicide rather than be taken captive\n", Param.klingcrew - i);
 111                 if (i > Ship.brigfree)
 112                         i = Ship.brigfree;
 113                 Ship.brigfree -= i;
 114                 printf("%d captives taken\n", i);
 115                 killk(k->x, k->y);
 116                 return;
 117         }
 118
 119         /* big surprise, he refuses to surrender */
 120         printf("Fat chance, captain\n");
 121         return;
 122 }
 123
 124
 125 /*
 126 **  SELECT A KLINGON
 127 **
 128 **      Cruddy, just takes one at random.  Should ask the captain.
 129 */
 130
 131 struct kling    *selectklingon()
 132 {
 133         int             i;
 134
 135         if (Etc.nkling < 2)
 136                 i = 0;
 137         else
 138                 i = ranf(Etc.nkling);
 139         return (&Etc.klingon[i]);
 140 }