usr/src/games/trek/capture.c

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted provided
 * that: (1) source distributions retain this entire copyright notice and
 * comment, and (2) distributions including binaries display the following
 * acknowledgement:  ``This product includes software developed by the
 * University of California, Berkeley and its contributors'' in the
 * documentation or other materials provided with the distribution and in
 * all advertising materials mentioning features or use of this software.
 * Neither the name of the University nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
static char sccsid[] = "@(#)capture.c   5.4 (Berkeley) 6/1/90";
#endif /* not lint */

# include       "trek.h"

/*
**  Ask a Klingon To Surrender
**
**      (Fat chance)
**
**      The Subspace Radio is needed to ask a Klingon if he will kindly
**      surrender.  A random Klingon from the ones in the quadrant is
**      chosen.
**
**      The Klingon is requested to surrender.  The probability of this
**      is a function of that Klingon's remaining power, our power,
**      etc.
*/

capture()
{
        register int            i;
        register struct kling   *k;
        double                  x;
        extern struct kling     *selectklingon();

        /* check for not cloaked */
        if (Ship.cloaked)
        {
                printf("Ship-ship communications out when cloaked\n");
                return;
        }
        if (damaged(SSRADIO))
                return (out(SSRADIO));
        /* find out if there are any at all */
        if (Etc.nkling <= 0)
        {
                printf("Uhura: Getting no response, sir\n");
                return;
        }

        /* if there is more than one Klingon, find out which one */
        k = selectklingon();
        Move.free = 0;
        Move.time = 0.05;

        /* check out that Klingon */
        k->srndreq++;
        x = Param.klingpwr;
        x *= Ship.energy;
        x /= k->power * Etc.nkling;
        x *= Param.srndrprob;
        i = x;
#       ifdef xTRACE
        if (Trace)
                printf("Prob = %d (%.4f)\n", i, x);
#       endif
        if (i > ranf(100))
        {
                /* guess what, he surrendered!!! */
                printf("Klingon at %d,%d surrenders\n", k->x, k->y);
                i = ranf(Param.klingcrew);
                if ( i > 0 )
                        printf("%d klingons commit suicide rather than be taken captive\n", Param.klingcrew - i);
                if (i > Ship.brigfree)
                        i = Ship.brigfree;
                Ship.brigfree -= i;
                printf("%d captives taken\n", i);
                killk(k->x, k->y);
                return;
        }

        /* big surprise, he refuses to surrender */
        printf("Fat chance, captain\n");
        return;
}


/*
**  SELECT A KLINGON
**
**      Cruddy, just takes one at random.  Should ask the captain.
*/

struct kling    *selectklingon()
{
        register int            i;

        if (Etc.nkling < 2)
                i = 0;
        else
                i = ranf(Etc.nkling);
        return (&Etc.klingon[i]);
}