trek/impulse.c

   1 /*      $NetBSD: impulse.c,v 1.3 1995/04/22 10:59:03 cgd 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. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)impulse.c   8.1 (Berkeley) 5/31/93";
  39 #else
  40 static char rcsid[] = "$NetBSD: impulse.c,v 1.3 1995/04/22 10:59:03 cgd Exp $";
  41 #endif
  42 #endif /* not lint */
  43
  44 # include       "trek.h"
  45
  46 /**
  47  **     move under impulse power
  48  **/
  49
  50 impulse()
  51 {
  52         int                     course;
  53         register int            power;
  54         double                  dist, time;
  55         register int            percent;
  56         extern double           move();
  57
  58         if (Ship.cond == DOCKED)
  59                 return (printf("Scotty: Sorry captain, but we are still docked.\n"));
  60         if (damaged(IMPULSE))
  61                 return (out(IMPULSE));
  62         if (getcodi(&course, &dist))
  63                 return;
  64         power = 20 + 100 * dist;
  65         percent = 100 * power / Ship.energy + 0.5;
  66         if (percent >= 85)
  67         {
  68                 printf("Scotty: That would consume %d%% of our remaining energy.\n",
  69                         percent);
  70                 if (!getynpar("Are you sure that is wise"))
  71                         return;
  72                 printf("Aye aye, sir\n");
  73         }
  74         time = dist / 0.095;
  75         percent = 100 * time / Now.time + 0.5;
  76         if (percent >= 85)
  77         {
  78                 printf("Spock: That would take %d%% of our remaining time.\n",
  79                         percent);
  80                 if (!getynpar("Are you sure that is wise"))
  81                         return;
  82                 printf("(He's finally gone mad)\n");
  83         }
  84         Move.time = move(0, course, time, 0.095);
  85         Ship.energy -= 20 + 100 * Move.time * 0.095;
  86 }