trek/impulse.c

   1 /*      $NetBSD: impulse.c,v 1.7 2007/12/15 19:44:44 perry 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 1.7 2007/12/15 19:44:44 perry 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(v)
  52         int v __unused;
  53 {
  54         int             course;
  55         int             power;
  56         double          dist, time;
  57         int             percent;
  58
  59         if (Ship.cond == DOCKED) {
  60                 printf("Scotty: Sorry captain, but we are still docked.\n");
  61                 return;
  62         }
  63         if (damaged(IMPULSE)) {
  64                 out(IMPULSE);
  65                 return;
  66         }
  67         if (getcodi(&course, &dist))
  68                 return;
  69         power = 20 + 100 * dist;
  70         percent = 100 * power / Ship.energy + 0.5;
  71         if (percent >= 85)
  72         {
  73                 printf("Scotty: That would consume %d%% of our remaining energy.\n",
  74                         percent);
  75                 if (!getynpar("Are you sure that is wise"))
  76                         return;
  77                 printf("Aye aye, sir\n");
  78         }
  79         time = dist / 0.095;
  80         percent = 100 * time / Now.time + 0.5;
  81         if (percent >= 85)
  82         {
  83                 printf("Spock: That would take %d%% of our remaining time.\n",
  84                         percent);
  85                 if (!getynpar("Are you sure that is wise"))
  86                         return;
  87                 printf("(He's finally gone mad)\n");
  88         }
  89         Move.time = move(0, course, time, 0.095);
  90         Ship.energy -= 20 + 100 * Move.time * 0.095;
  91 }