games/sail/dr_5.c

   1 /*-
   2  * Copyright (c) 1983, 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. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)dr_5.c   8.1 (Berkeley) 5/31/93
  30  * $FreeBSD: src/games/sail/dr_5.c,v 1.4 1999/11/30 03:49:33 billf Exp $
  31  * $DragonFly: src/games/sail/dr_5.c,v 1.3 2006/09/03 17:33:13 pavalos Exp $
  32  */
  33
  34 #include "externs.h"
  35
  36 void
  37 subtract(struct ship *from, int totalfrom, int crewfrom[3], struct ship *fromcap, int pcfrom)
  38 {
  39         int n;
  40
  41         if (fromcap == from && totalfrom) {             /* if not captured */
  42                 for (n = 0; n < 3; n++) {
  43                         if (totalfrom > crewfrom[n]) {
  44                                 totalfrom -= crewfrom[n];
  45                                 crewfrom[n] = 0;
  46                         } else {
  47                                 crewfrom[n] -= totalfrom;
  48                                 totalfrom = 0;
  49                         }
  50                 }
  51                 Write(W_CREW, from, crewfrom[0], crewfrom[1], crewfrom[2], 0);
  52         } else if (totalfrom) {
  53                 pcfrom -= totalfrom;
  54                 pcfrom = pcfrom < 0 ? 0 : pcfrom;
  55                 Write(W_PCREW, from, pcfrom, 0, 0, 0);
  56         }
  57 }
  58
  59 int
  60 mensent(struct ship *from, struct ship *to, int crew[3], struct ship **captured, int *pc, char isdefense)
  61 {                                       /* returns # of crew squares sent */
  62         int men = 0;
  63         int n;
  64         int c1, c2, c3;
  65         struct BP *bp;
  66
  67         *pc = from->file->pcrew;
  68         *captured = from->file->captured;
  69         crew[0] = from->specs->crew1;
  70         crew[1] = from->specs->crew2;
  71         crew[2] = from->specs->crew3;
  72         bp = isdefense ? from->file->DBP : from->file->OBP;
  73         for (n=0; n < NBP; n++, bp++) {
  74                 if (bp->turnsent && bp->toship == to)
  75                         men += bp->mensent;
  76         }
  77         if (men) {
  78                 c1 = men/100 ? crew[0] : 0;
  79                 c2 = (men%100)/10 ? crew[1] : 0;
  80                 c3 = men/10 ? crew[2] : 0;
  81                 c3 = *captured == 0 ? crew[2] : *pc;
  82         } else
  83                 c1 = c2 = c3 = 0;
  84         return(c1 + c2 + c3);
  85 }