sail/dr_5.c

   1 /*      $NetBSD: dr_5.c,v 1.10 2001/01/04 06:16:51 jwise Exp $  */
   2
   3 /*
   4  * Copyright (c) 1983, 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[] = "@(#)dr_5.c      8.2 (Berkeley) 4/28/95";
  40 #else
  41 __RCSID("$NetBSD: dr_5.c,v 1.10 2001/01/04 06:16:51 jwise Exp $");
  42 #endif
  43 #endif /* not lint */
  44
  45 #include <sys/types.h>
  46 #include "extern.h"
  47
  48 void    subtract(struct ship *, struct ship *, int, int *, int);
  49 int     mensent(struct ship *, struct ship *, int *, struct ship **, int *, int);
  50
  51 void
  52 subtract(struct ship *from, struct ship *fromcap, int totalfrom, int *crewfrom, int pcfrom)
  53 {
  54         int n;
  55
  56         if (fromcap == from && totalfrom) {             /* if not captured */
  57                 for (n = 0; n < 3; n++) {
  58                         if (totalfrom > crewfrom[n]) {
  59                                 totalfrom -= crewfrom[n];
  60                                 crewfrom[n] = 0;
  61                         } else {
  62                                 crewfrom[n] -= totalfrom;
  63                                 totalfrom = 0;
  64                         }
  65                 }
  66                 Write(W_CREW, from, crewfrom[0], crewfrom[1], crewfrom[2], 0);
  67         } else if (totalfrom) {
  68                 pcfrom -= totalfrom;
  69                 pcfrom = pcfrom < 0 ? 0 : pcfrom;
  70                 Write(W_PCREW, from, pcfrom, 0, 0, 0);
  71         }
  72 }
  73
  74 int
  75 mensent(struct ship *from, struct ship *to, int *crew, struct ship **captured, int *pc, int isdefense)
  76 {                                       /* returns # of crew squares sent */
  77         int men = 0;
  78         int n;
  79         int c1, c2, c3;
  80         struct BP *bp;
  81
  82         *pc = from->file->pcrew;
  83         *captured = from->file->captured;
  84         crew[0] = from->specs->crew1;
  85         crew[1] = from->specs->crew2;
  86         crew[2] = from->specs->crew3;
  87         bp = isdefense ? from->file->DBP : from->file->OBP;
  88         for (n=0; n < NBP; n++, bp++) {
  89                 if (bp->turnsent && bp->toship == to)
  90                         men += bp->mensent;
  91         }
  92         if (men) {
  93                 c1 = men/100 ? crew[0] : 0;
  94                 c2 = (men%100)/10 ? crew[1] : 0;
  95                 c3 = men/10 ? crew[2] : 0;
  96                 c3 = *captured == 0 ? crew[2] : *pc;
  97         } else
  98                 c1 = c2 = c3 = 0;
  99         return(c1 + c2 + c3);
 100 }