/*      $OpenBSD: capture.c,v 1.7 2016/01/07 14:37:51 mestre Exp $      */
/*      $NetBSD: capture.c,v 1.3 1995/04/22 10:58:32 cgd Exp $  */

/*
 * Copyright (c) 1980, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <stdio.h>

#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.
*/
void
capture(int v)
{
        int             i;
        struct kling    *k;
        double          x;

        /* check for not cloaked */
        if (Ship.cloaked)
        {
                printf("Ship-ship communications out when cloaked\n");
                return;
        }
        if (damaged(SSRADIO))
        {
                out(SSRADIO);
                return;
        }
        /* 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(void)
{
        int             i;

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