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      1 /*	$NetBSD: impulse.c,v 1.10 2009/05/24 22:55:03 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[] = "@(#)impulse.c	8.1 (Berkeley) 5/31/93";
     36 #else
     37 __RCSID("$NetBSD: impulse.c,v 1.10 2009/05/24 22:55:03 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*/
     50 void
     51 impulse(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