games/sail/parties.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  * @(#)parties.c        8.1 (Berkeley) 5/31/93
  30  * $FreeBSD: src/games/sail/parties.c,v 1.5 1999/11/30 03:49:35 billf Exp $
  31  * $DragonFly: src/games/sail/parties.c,v 1.3 2006/09/03 17:33:13 pavalos Exp $
  32  */
  33
  34 #include "externs.h"
  35
  36 bool
  37 meleeing(struct ship *from, struct ship *to)
  38 {
  39         struct BP *p = from->file->OBP;
  40         struct BP *q = p + NBP;
  41
  42         for (; p < q; p++)
  43                 if (p->turnsent && p->toship == to)
  44                         return 1;
  45         return 0;
  46 }
  47
  48 bool
  49 boarding(struct ship *from, char isdefense)
  50 {
  51         struct BP *p = isdefense ? from->file->DBP : from->file->OBP;
  52         struct BP *q = p + NBP;
  53
  54         for (; p < q; p++)
  55                 if (p->turnsent)
  56                         return 1;
  57         return 0;
  58 }
  59
  60 void
  61 unboard(struct ship *ship, struct ship *to, char isdefense)
  62 {
  63         struct BP *p = isdefense ? ship->file->DBP : ship->file->OBP;
  64         int n;
  65
  66         for (n = 0; n < NBP; p++, n++) {
  67                 if (p->turnsent &&
  68                     (p->toship == to || isdefense || ship == to))
  69                         Write(isdefense ? W_DBP : W_OBP, ship, n, 0, 0, 0);
  70         }
  71 }