Home | History | Annotate | Line # | Download | only in trek
capture.c revision 1.2 
      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: @(#)capture.c	5.4 (Berkeley) 6/1/90";*/
     36 static char rcsid[] = "$Id: capture.c,v 1.2 1993/08/01 18:50:51 mycroft Exp $";
     37 #endif /* not lint */
     38 
     39 # include	"trek.h"
     40 
     41 /*
     42 **  Ask a Klingon To Surrender
     43 **
     44 **	(Fat chance)
     45 **
     46 **	The Subspace Radio is needed to ask a Klingon if he will kindly
     47 **	surrender.  A random Klingon from the ones in the quadrant is
     48 **	chosen.
     49 **
     50 **	The Klingon is requested to surrender.  The probability of this
     51 **	is a function of that Klingon's remaining power, our power,
     52 **	etc.
     53 */
     54 
     55 capture()
     56 {
     57 	register int		i;
     58 	register struct kling	*k;
     59 	double			x;
     60 	extern struct kling	*selectklingon();
     61 
     62 	/* check for not cloaked */
     63 	if (Ship.cloaked)
     64 	{
     65 		printf("Ship-ship communications out when cloaked\n");
     66 		return;
     67 	}
     68 	if (damaged(SSRADIO))
     69 		return (out(SSRADIO));
     70 	/* find out if there are any at all */
     71 	if (Etc.nkling <= 0)
     72 	{
     73 		printf("Uhura: Getting no response, sir\n");
     74 		return;
     75 	}
     76 
     77 	/* if there is more than one Klingon, find out which one */
     78 	k = selectklingon();
     79 	Move.free = 0;
     80 	Move.time = 0.05;
     81 
     82 	/* check out that Klingon */
     83 	k->srndreq++;
     84 	x = Param.klingpwr;
     85 	x *= Ship.energy;
     86 	x /= k->power * Etc.nkling;
     87 	x *= Param.srndrprob;
     88 	i = x;
     89 #	ifdef xTRACE
     90 	if (Trace)
     91 		printf("Prob = %d (%.4f)\n", i, x);
     92 #	endif
     93 	if (i > ranf(100))
     94 	{
     95 		/* guess what, he surrendered!!! */
     96 		printf("Klingon at %d,%d surrenders\n", k->x, k->y);
     97 		i = ranf(Param.klingcrew);
     98 		if ( i > 0 )
     99 			printf("%d klingons commit suicide rather than be taken captive\n", Param.klingcrew - i);
    100 		if (i > Ship.brigfree)
    101 			i = Ship.brigfree;
    102 		Ship.brigfree -= i;
    103 		printf("%d captives taken\n", i);
    104 		killk(k->x, k->y);
    105 		return;
    106 	}
    107 
    108 	/* big surprise, he refuses to surrender */
    109 	printf("Fat chance, captain\n");
    110 	return;
    111 }
    112 
    113 
    114 /*
    115 **  SELECT A KLINGON
    116 **
    117 **	Cruddy, just takes one at random.  Should ask the captain.
    118 */
    119 
    120 struct kling	*selectklingon()
    121 {
    122 	register int		i;
    123 
    124 	if (Etc.nkling < 2)
    125 		i = 0;
    126 	else
    127 		i = ranf(Etc.nkling);
    128 	return (&Etc.klingon[i]);
    129 }
    130