1/*	$NetBSD: impulse.c,v 1.9 2009/05/24 21:44:56 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
35static char sccsid[] = "@(#)impulse.c	8.1 (Berkeley) 5/31/93";
36#else
37__RCSID("$NetBSD: impulse.c,v 1.9 2009/05/24 21:44:56 dholland Exp $");
38#endif
39#endif /* not lint */
40
41#include <stdio.h>
42#include "trek.h"
43#include "getpar.h"
44
45/**
46 **	move under impulse power
47 **/
48
49/*ARGSUSED*/
50void
51impulse(int v __unused)
52{
53	int		course;
54	int		power;
55	double		dist, time;
56	int		percent;
57
58	if (Ship.cond == DOCKED) {
59		printf("Scotty: Sorry captain, but we are still docked.\n");
60		return;
61	}
62	if (damaged(IMPULSE)) {
63		out(IMPULSE);
64		return;
65	}
66	if (getcodi(&course, &dist))
67		return;
68	power = 20 + 100 * dist;
69	percent = 100 * power / Ship.energy + 0.5;
70	if (percent >= 85) {
71		printf("Scotty: That would consume %d%% of our remaining "
72		       "energy.\n",
73			percent);
74		if (!getynpar("Are you sure that is wise"))
75			return;
76		printf("Aye aye, sir\n");
77	}
78	time = dist / 0.095;
79	percent = 100 * time / Now.time + 0.5;
80	if (percent >= 85) {
81		printf("Spock: That would take %d%% of our remaining time.\n",
82			percent);
83		if (!getynpar("Are you sure that is wise"))
84			return;
85		printf("(He's finally gone mad)\n");
86	}
87	Move.time = move(0, course, time, 0.095);
88	Ship.energy -= 20 + 100 * Move.time * 0.095;
89}
90