freebsd-dev/games/trek/impulse.c

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/*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*/
#ifndef lint
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#if 0
static char sccsid[] = "@(#)impulse.c 8.1 (Berkeley) 5/31/93";
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#endif
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
# include "trek.h"
/**
** move under impulse power
**/
impulse()
{
int course;
int power;
double dist, time;
int percent;
extern double move();
if (Ship.cond == DOCKED)
return (printf("Scotty: Sorry captain, but we are still docked.\n"));
if (damaged(IMPULSE))
return (out(IMPULSE));
if (getcodi(&course, &dist))
return;
power = 20 + 100 * dist;
percent = 100 * power / Ship.energy + 0.5;
if (percent >= 85)
{
printf("Scotty: That would consume %d%% of our remaining energy.\n",
percent);
if (!getynpar("Are you sure that is wise"))
return;
printf("Aye aye, sir\n");
}
time = dist / 0.095;
percent = 100 * time / Now.time + 0.5;
if (percent >= 85)
{
printf("Spock: That would take %d%% of our remaining time.\n",
percent);
if (!getynpar("Are you sure that is wise"))
return;
printf("(He's finally gone mad)\n");
}
Move.time = move(0, course, time, 0.095);
Ship.energy -= 20 + 100 * Move.time * 0.095;
}