1 /*- 2 * Copyright (c) 1980, 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 * @(#)getcodi.c 8.1 (Berkeley) 5/31/93 30 * $FreeBSD: src/games/trek/getcodi.c,v 1.2 1999/11/30 03:49:48 billf Exp $ 31 * $DragonFly: src/games/trek/getcodi.c,v 1.3 2006/09/07 21:19:44 pavalos Exp $ 32 */ 33 34 #include "getpar.h" 35 #include "trek.h" 36 37 /* 38 ** get course and distance 39 ** 40 ** The user is asked for a course and distance. This is used by 41 ** move, impulse, and some of the computer functions. 42 ** 43 ** The return value is zero for success, one for an invalid input 44 ** (meaning to drop the request). 45 */ 46 47 bool 48 getcodi(int *co, double *di) 49 { 50 51 *co = getintpar("Course"); 52 53 /* course must be in the interval [0, 360] */ 54 if (*co < 0 || *co > 360) 55 return (1); 56 *di = getfltpar("Distance"); 57 58 /* distance must be in the interval [0, 15] */ 59 if (*di <= 0.0 || *di > 15.0) 60 return (1); 61 62 /* good return */ 63 return (0); 64 } 65