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capture.c revision 1.5 
      1 /*	$NetBSD: capture.c,v 1.5 1999/09/08 21:45:32 jsm 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 1.5 1999/09/08 21:45:32 jsm 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 __attribute__((__unused__));
     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 }
    141