Home | History | Annotate | Line # | Download | only in trek
capture.c revision 1.1.1.2 
      1 /*
      2  * Copyright (c) 1980, 1993
      3  *	The Regents of the University of California.  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[] = "@(#)capture.c	8.1 (Berkeley) 5/31/93";
     36 #endif /* not lint */
     37 
     38 # include	"trek.h"
     39 
     40 /*
     41 **  Ask a Klingon To Surrender
     42 **
     43 **	(Fat chance)
     44 **
     45 **	The Subspace Radio is needed to ask a Klingon if he will kindly
     46 **	surrender.  A random Klingon from the ones in the quadrant is
     47 **	chosen.
     48 **
     49 **	The Klingon is requested to surrender.  The probability of this
     50 **	is a function of that Klingon's remaining power, our power,
     51 **	etc.
     52 */
     53 
     54 capture()
     55 {
     56 	register int		i;
     57 	register struct kling	*k;
     58 	double			x;
     59 	extern struct kling	*selectklingon();
     60 
     61 	/* check for not cloaked */
     62 	if (Ship.cloaked)
     63 	{
     64 		printf("Ship-ship communications out when cloaked\n");
     65 		return;
     66 	}
     67 	if (damaged(SSRADIO))
     68 		return (out(SSRADIO));
     69 	/* find out if there are any at all */
     70 	if (Etc.nkling <= 0)
     71 	{
     72 		printf("Uhura: Getting no response, sir\n");
     73 		return;
     74 	}
     75 
     76 	/* if there is more than one Klingon, find out which one */
     77 	k = selectklingon();
     78 	Move.free = 0;
     79 	Move.time = 0.05;
     80 
     81 	/* check out that Klingon */
     82 	k->srndreq++;
     83 	x = Param.klingpwr;
     84 	x *= Ship.energy;
     85 	x /= k->power * Etc.nkling;
     86 	x *= Param.srndrprob;
     87 	i = x;
     88 #	ifdef xTRACE
     89 	if (Trace)
     90 		printf("Prob = %d (%.4f)\n", i, x);
     91 #	endif
     92 	if (i > ranf(100))
     93 	{
     94 		/* guess what, he surrendered!!! */
     95 		printf("Klingon at %d,%d surrenders\n", k->x, k->y);
     96 		i = ranf(Param.klingcrew);
     97 		if ( i > 0 )
     98 			printf("%d klingons commit suicide rather than be taken captive\n", Param.klingcrew - i);
     99 		if (i > Ship.brigfree)
    100 			i = Ship.brigfree;
    101 		Ship.brigfree -= i;
    102 		printf("%d captives taken\n", i);
    103 		killk(k->x, k->y);
    104 		return;
    105 	}
    106 
    107 	/* big surprise, he refuses to surrender */
    108 	printf("Fat chance, captain\n");
    109 	return;
    110 }
    111 
    112 
    113 /*
    114 **  SELECT A KLINGON
    115 **
    116 **	Cruddy, just takes one at random.  Should ask the captain.
    117 */
    118 
    119 struct kling	*selectklingon()
    120 {
    121 	register int		i;
    122 
    123 	if (Etc.nkling < 2)
    124 		i = 0;
    125 	else
    126 		i = ranf(Etc.nkling);
    127 	return (&Etc.klingon[i]);
    128 }
    129