sail/dr_4.c

   1 /*      $NetBSD: dr_4.c,v 1.3 1995/04/22 10:36:50 cgd 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 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)dr_4.c      8.1 (Berkeley) 5/31/93";
  39 #else
  40 static char rcsid[] = "$NetBSD: dr_4.c,v 1.3 1995/04/22 10:36:50 cgd Exp $";
  41 #endif
  42 #endif /* not lint */
  43
  44 #include "externs.h"
  45
  46 ungrap(from, to)
  47 register struct ship *from, *to;
  48 {
  49         register k;
  50         char friend;
  51
  52         if ((k = grappled2(from, to)) == 0)
  53                 return;
  54         friend = capship(from)->nationality == capship(to)->nationality;
  55         while (--k >= 0) {
  56                 if (friend || die() < 3) {
  57                         cleangrapple(from, to, 0);
  58                         makesignal(from, "ungrappling %s (%c%c)", to);
  59                 }
  60         }
  61 }
  62
  63 grap(from, to)
  64 register struct ship *from, *to;
  65 {
  66         if (capship(from)->nationality != capship(to)->nationality && die() > 2)
  67                 return;
  68         Write(W_GRAP, from, 0, to->file->index, 0, 0, 0);
  69         Write(W_GRAP, to, 0, from->file->index, 0, 0, 0);
  70         makesignal(from, "grappled with %s (%c%c)", to);
  71 }