1 /* $NetBSD: dr_4.c,v 1.12 2001/02/05 01:10:09 christos 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 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)dr_4.c 8.2 (Berkeley) 4/28/95"; 40 #else 41 __RCSID("$NetBSD: dr_4.c,v 1.12 2001/02/05 01:10:09 christos Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <stdlib.h> 46 #include "extern.h" 47 48 void 49 ungrap(struct ship *from, struct ship *to) 50 { 51 int k; 52 char friend; 53 54 if ((k = grappled2(from, to)) == 0) 55 return; 56 friend = capship(from)->nationality == capship(to)->nationality; 57 while (--k >= 0) { 58 if (friend || dieroll() < 3) { 59 cleangrapple(from, to, 0); 60 makesignal(from, "ungrappling $$", to); 61 } 62 } 63 } 64 65 void 66 grap(struct ship *from, struct ship *to) 67 { 68 if (capship(from)->nationality != capship(to)->nationality && dieroll() > 2) 69 return; 70 Write(W_GRAP, from, to->file->index, 0, 0, 0); 71 Write(W_GRAP, to, from->file->index, 0, 0, 0); 72 makesignal(from, "grappled with $$", to); 73 } 74