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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#)parties.c        8.1 (Berkeley) 5/31/93
  34  * $FreeBSD: src/games/sail/parties.c,v 1.5 1999/11/30 03:49:35 billf Exp $
  35  * $DragonFly: src/games/sail/parties.c,v 1.3 2006/09/03 17:33:13 pavalos Exp $
  36  */
  37
  38 #include "externs.h"
  39
  40 bool
  41 meleeing(struct ship *from, struct ship *to)
  42 {
  43         struct BP *p = from->file->OBP;
  44         struct BP *q = p + NBP;
  45
  46         for (; p < q; p++)
  47                 if (p->turnsent && p->toship == to)
  48                         return 1;
  49         return 0;
  50 }
  51
  52 bool
  53 boarding(struct ship *from, char isdefense)
  54 {
  55         struct BP *p = isdefense ? from->file->DBP : from->file->OBP;
  56         struct BP *q = p + NBP;
  57
  58         for (; p < q; p++)
  59                 if (p->turnsent)
  60                         return 1;
  61         return 0;
  62 }
  63
  64 void
  65 unboard(struct ship *ship, struct ship *to, char isdefense)
  66 {
  67         struct BP *p = isdefense ? ship->file->DBP : ship->file->OBP;
  68         int n;
  69
  70         for (n = 0; n < NBP; p++, n++)
  71                 if (p->turnsent && (p->toship == to || isdefense || ship == to))
  72                         Write(isdefense ? W_DBP : W_OBP, ship, 0, n, 0, 0, 0);
  73 }