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- /*
- * Copyright (c) 1980 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 5.4 (Berkeley) 6/1/90";
- #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;
- }
-