Home | History | Annotate | Line # | Download | only in trek 
      1 /*	$NetBSD: getcodi.c,v 1.6 2009/05/24 19:18:44 dholland Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1980, 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. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)getcodi.c	8.1 (Berkeley) 5/31/93";
     36 #else
     37 __RCSID("$NetBSD: getcodi.c,v 1.6 2009/05/24 19:18:44 dholland Exp $");
     38 #endif
     39 #endif /* not lint */
     40 
     41 #include "getpar.h"
     42 #include "trek.h"
     43 
     44 /*
     45 **  get course and distance
     46 **
     47 **	The user is asked for a course and distance.  This is used by
     48 **	move, impulse, and some of the computer functions.
     49 **
     50 **	The return value is zero for success, one for an invalid input
     51 **	(meaning to drop the request).
     52 */
     53 
     54 int
     55 getcodi(int *co, double *di)
     56 {
     57 
     58 	*co = getintpar("Course");
     59 
     60 	/* course must be in the interval [0, 360] */
     61 	if (*co < 0 || *co > 360)
     62 		return (1);
     63 	*di = getfltpar("Distance");
     64 
     65 	/* distance must be in the interval [0, 15] */
     66 	if (*di <= 0.0 || *di > 15.0)
     67 		return (1);
     68 
     69 	/* good return */
     70 	return (0);
     71 }
     72