games/sail/dr_5.c

   1 /*      $NetBSD: dr_5.c,v 1.13 2009/03/14 19:35:13 dholland 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. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 #if 0
  35 static char sccsid[] = "@(#)dr_5.c      8.2 (Berkeley) 4/28/95";
  36 #else
  37 __RCSID("$NetBSD: dr_5.c,v 1.13 2009/03/14 19:35:13 dholland Exp $");
  38 #endif
  39 #endif /* not lint */
  40
  41 #include <sys/types.h>
  42 #include "extern.h"
  43
  44 void
  45 subtract(struct ship *from, struct ship *fromcap, int totalfrom, int *crewfrom,
  46          int pcfrom)
  47 {
  48         int n;
  49
  50         if (fromcap == from && totalfrom) {             /* if not captured */
  51                 for (n = 0; n < 3; n++) {
  52                         if (totalfrom > crewfrom[n]) {
  53                                 totalfrom -= crewfrom[n];
  54                                 crewfrom[n] = 0;
  55                         } else {
  56                                 crewfrom[n] -= totalfrom;
  57                                 totalfrom = 0;
  58                         }
  59                 }
  60                 send_crew(from, crewfrom[0], crewfrom[1], crewfrom[2]);
  61         } else if (totalfrom) {
  62                 pcfrom -= totalfrom;
  63                 pcfrom = pcfrom < 0 ? 0 : pcfrom;
  64                 send_pcrew(from, pcfrom);
  65         }
  66 }
  67
  68 int
  69 mensent(struct ship *from, struct ship *to, int *crew, struct ship **captured,
  70         int *pc, int isdefense)
  71 {                                       /* returns # of crew squares sent */
  72         int men = 0;
  73         int n;
  74         int c1, c2, c3;
  75         struct BP *bp;
  76
  77         *pc = from->file->pcrew;
  78         *captured = from->file->captured;
  79         crew[0] = from->specs->crew1;
  80         crew[1] = from->specs->crew2;
  81         crew[2] = from->specs->crew3;
  82         bp = isdefense ? from->file->DBP : from->file->OBP;
  83         for (n=0; n < NBP; n++, bp++) {
  84                 if (bp->turnsent && bp->toship == to)
  85                         men += bp->mensent;
  86         }
  87         if (men) {
  88                 c1 = men/100 ? crew[0] : 0;
  89                 c2 = (men%100)/10 ? crew[1] : 0;
  90                 c3 = men/10 ? crew[2] : 0;
  91                 c3 = *captured == 0 ? crew[2] : *pc;
  92         } else
  93                 c1 = c2 = c3 = 0;
  94         return(c1 + c2 + c3);
  95 }