/*      $NetBSD: dr_5.c,v 1.15 2023/08/01 07:04:15 mrg Exp $    */

/*
* Copyright (c) 1983, 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 <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)dr_5.c      8.2 (Berkeley) 4/28/95";
#else
__RCSID("$NetBSD: dr_5.c,v 1.15 2023/08/01 07:04:15 mrg Exp $");
#endif
#endif /* not lint */

#include <sys/types.h>
#include "extern.h"

void
subtract(struct ship *from, struct ship *fromcap, int totalfrom, int crewfrom[3],
        int pcfrom)
{
       int n;

       if (fromcap == from && totalfrom) {             /* if not captured */
               for (n = 0; n < 3; n++) {
                       if (totalfrom > crewfrom[n]) {
                               totalfrom -= crewfrom[n];
                               crewfrom[n] = 0;
                       } else {
                               crewfrom[n] -= totalfrom;
                               totalfrom = 0;
                       }
               }
               send_crew(from, crewfrom[0], crewfrom[1], crewfrom[2]);
       } else if (totalfrom) {
               pcfrom -= totalfrom;
               pcfrom = pcfrom < 0 ? 0 : pcfrom;
               send_pcrew(from, pcfrom);
       }
}

int
mensent(struct ship *from, struct ship *to, int crew[3], struct ship **captured,
       int *pc, int isdefense)
{                                       /* returns # of crew squares sent */
       int men = 0;
       int n;
       int c1, c2, c3;
       struct BP *bp;

       *pc = from->file->pcrew;
       *captured = from->file->captured;
       crew[0] = from->specs->crew1;
       crew[1] = from->specs->crew2;
       crew[2] = from->specs->crew3;
       bp = isdefense ? from->file->DBP : from->file->OBP;
       for (n=0; n < NBP; n++, bp++) {
               if (bp->turnsent && bp->toship == to)
                       men += bp->mensent;
       }
       if (men) {
               c1 = men/100 ? crew[0] : 0;
               c2 = (men%100)/10 ? crew[1] : 0;
               c3 = men/10 ? crew[2] : 0;
               c3 = *captured == 0 ? crew[2] : *pc;
       } else
               c1 = c2 = c3 = 0;
       return(c1 + c2 + c3);
}