trek/impulse.c

   1 /*      $NetBSD: impulse.c,v 1.5 1999/09/08 21:45:33 jsm 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 #include <sys/cdefs.h>
  37 #ifndef lint
  38 #if 0
  39 static char sccsid[] = "@(#)impulse.c   8.1 (Berkeley) 5/31/93";
  40 #else
  41 __RCSID("$NetBSD: impulse.c,v 1.5 1999/09/08 21:45:33 jsm Exp $");
  42 #endif
  43 #endif /* not lint */
  44
  45 #include <stdio.h>
  46 #include "trek.h"
  47 #include "getpar.h"
  48
  49 /**
  50  **     move under impulse power
  51  **/
  52
  53 /*ARGSUSED*/
  54 void
  55 impulse(v)
  56         int v __attribute__((__unused__));
  57 {
  58         int             course;
  59         int             power;
  60         double          dist, time;
  61         int             percent;
  62
  63         if (Ship.cond == DOCKED) {
  64                 printf("Scotty: Sorry captain, but we are still docked.\n");
  65                 return;
  66         }
  67         if (damaged(IMPULSE)) {
  68                 out(IMPULSE);
  69                 return;
  70         }
  71         if (getcodi(&course, &dist))
  72                 return;
  73         power = 20 + 100 * dist;
  74         percent = 100 * power / Ship.energy + 0.5;
  75         if (percent >= 85)
  76         {
  77                 printf("Scotty: That would consume %d%% of our remaining energy.\n",
  78                         percent);
  79                 if (!getynpar("Are you sure that is wise"))
  80                         return;
  81                 printf("Aye aye, sir\n");
  82         }
  83         time = dist / 0.095;
  84         percent = 100 * time / Now.time + 0.5;
  85         if (percent >= 85)
  86         {
  87                 printf("Spock: That would take %d%% of our remaining time.\n",
  88                         percent);
  89                 if (!getynpar("Are you sure that is wise"))
  90                         return;
  91                 printf("(He's finally gone mad)\n");
  92         }
  93         Move.time = move(0, course, time, 0.095);
  94         Ship.energy -= 20 + 100 * Move.time * 0.095;
  95 }