BSD 4_3_Reno release

[unix-history] / usr / src / games / trek / impulse.c

/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted provided
* that: (1) source distributions retain this entire copyright notice and
* comment, and (2) distributions including binaries display the following
* acknowledgement:  ``This product includes software developed by the
* University of California, Berkeley and its contributors'' in the
* documentation or other materials provided with the distribution and in
* all advertising materials mentioning features or use of this software.
* 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/

#ifndef lint
static char sccsid[] = "@(#)impulse.c   5.4 (Berkeley) 6/1/90";
#endif /* not lint */

# include       "trek.h"

/**
**     move under impulse power
**/

impulse()
{
       int                     course;
       register int            power;
       double                  dist, time;
       register 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;
}