freebsd-dev/games/trek/warp.c
Jordan K. Hubbard 554eb505f8 Bring in the 4.4 Lite games directory, modulo man page changes and segregation
of the x11 based games.  I'm not going to tag the originals with bsd_44_lite
and do this in two stages since it's just not worth it for this collection,
and I've got directory renames to deal with that way.  Bleah.
Submitted by:	jkh
1994-09-04 04:03:31 +00:00

183 lines
5.6 KiB
C

/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char sccsid[] = "@(#)warp.c 8.1 (Berkeley) 5/31/93";
#endif /* not lint */
# include "trek.h"
/*
** MOVE UNDER WARP POWER
**
** This is both the "move" and the "ram" commands, differing
** only in the flag 'fl'. It is also used for automatic
** emergency override mode, when 'fl' is < 0 and 'c' and 'd'
** are the course and distance to be moved. If 'fl' >= 0,
** the course and distance are asked of the captain.
**
** The guts of this routine are in the routine move(), which
** is shared with impulse(). Also, the working part of this
** routine is very small; the rest is to handle the slight chance
** that you may be moving at some riduculous speed. In that
** case, there is code to handle time warps, etc.
*/
warp(fl, c, d)
int fl, c;
double d;
{
int course;
double power;
double dist;
double time;
double speed;
double frac;
register int percent;
register int i;
extern double move();
if (Ship.cond == DOCKED)
return (printf("%s is docked\n", Ship.shipname));
if (damaged(WARP))
{
return (out(WARP));
}
if (fl < 0)
{
course = c;
dist = d;
}
else
if (getcodi(&course, &dist))
return;
/* check to see that we are not using an absurd amount of power */
power = (dist + 0.05) * Ship.warp3;
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;
}
/* compute the speed we will move at, and the time it will take */
speed = Ship.warp2 / Param.warptime;
time = dist / speed;
/* check to see that that value is not ridiculous */
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;
}
/* compute how far we will go if we get damages */
if (Ship.warp > 6.0 && ranf(100) < 20 + 15 * (Ship.warp - 6.0))
{
frac = franf();
dist *= frac;
time *= frac;
damage(WARP, (frac + 1.0) * Ship.warp * (franf() + 0.25) * 0.20);
}
/* do the move */
Move.time = move(fl, course, time, speed);
/* see how far we actually went, and decrement energy appropriately */
dist = Move.time * speed;
Ship.energy -= dist * Ship.warp3 * (Ship.shldup + 1);
/* test for bizarre events */
if (Ship.warp <= 9.0)
return;
printf("\n\n ___ Speed exceeding warp nine ___\n\n");
sleep(2);
printf("Ship's safety systems malfunction\n");
sleep(2);
printf("Crew experiencing extreme sensory distortion\n");
sleep(4);
if (ranf(100) >= 100 * dist)
{
return (printf("Equilibrium restored -- all systems normal\n"));
}
/* select a bizzare thing to happen to us */
percent = ranf(100);
if (percent < 70)
{
/* time warp */
if (percent < 35 || !Game.snap)
{
/* positive time warp */
time = (Ship.warp - 8.0) * dist * (franf() + 1.0);
Now.date += time;
printf("Positive time portal entered -- it is now Stardate %.2f\n",
Now.date);
for (i = 0; i < MAXEVENTS; i++)
{
percent = Event[i].evcode;
if (percent == E_FIXDV || percent == E_LRTB)
Event[i].date += time;
}
return;
}
/* s/he got lucky: a negative time portal */
time = Now.date;
i = (int) Etc.snapshot;
bmove(i, Quad, sizeof Quad);
bmove(i += sizeof Quad, Event, sizeof Event);
bmove(i += sizeof Event, &Now, sizeof Now);
printf("Negative time portal entered -- it is now Stardate %.2f\n",
Now.date);
for (i = 0; i < MAXEVENTS; i++)
if (Event[i].evcode == E_FIXDV)
reschedule(&Event[i], Event[i].date - time);
return;
}
/* test for just a lot of damage */
if (percent < 80)
lose(L_TOOFAST);
printf("Equilibrium restored -- extreme damage occured to ship systems\n");
for (i = 0; i < NDEV; i++)
damage(i, (3.0 * (franf() + franf()) + 1.0) * Param.damfac[i]);
Ship.shldup = 0;
}