setwarp.c

/*-
 * Copyright (c) 1980, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * @(#)setwarp.c	8.1 (Berkeley) 5/31/93
 * $FreeBSD: src/games/trek/setwarp.c,v 1.2 1999/11/30 03:49:54 billf Exp $
 * $DragonFly: src/games/trek/setwarp.c,v 1.3 2006/09/07 21:19:44 pavalos Exp $
 */

#include "trek.h"
#include "getpar.h"

/*
**  SET WARP FACTOR
**
**	The warp factor is set for future move commands.  It is
**	checked for consistancy.
*/

void
setwarp(int v __unused)
{
	double	warpfac;

	warpfac = getfltpar("Warp factor");
	if (warpfac < 0.0)
		return;
	if (warpfac < 1.0) {
		printf("Minimum warp speed is 1.0\n");
		return;
	}
	if (warpfac > 10.0) {
		printf("Maximum speed is warp 10.0\n");
		return;
	}
	if (warpfac > 6.0)
		printf("Damage to warp engines may occur above warp 6.0\n");
	Ship.warp = warpfac;
	Ship.warp2 = Ship.warp * warpfac;
	Ship.warp3 = Ship.warp2 * warpfac;
}