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diff --git a/games/trek/move.c b/games/trek/move.c
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-/*
- * 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
-#if 0
-static char sccsid[] = "@(#)move.c 8.1 (Berkeley) 5/31/93";
-#endif
-static const char rcsid[] =
- "$FreeBSD$";
-#endif /* not lint */
-
-# include "trek.h"
-
-/*
-** Move Under Warp or Impulse Power
-**
-** `Ramflag' is set if we are to be allowed to ram stars,
-** Klingons, etc. This is passed from warp(), which gets it from
-** either play() or ram(). Course is the course (0 -> 360) at
-** which we want to move. `Speed' is the speed we
-** want to go, and `time' is the expected time. It
-** can get cut short if a long range tractor beam is to occur. We
-** cut short the move so that the user doesn't get docked time and
-** energy for distance which he didn't travel.
-**
-** We check the course through the current quadrant to see that he
-** doesn't run into anything. After that, though, space sort of
-** bends around him. Note that this puts us in the awkward posi-
-** tion of being able to be dropped into a sector which is com-
-** pletely surrounded by stars. Oh Well.
-**
-** If the SINS (Space Inertial Navigation System) is out, we ran-
-** domize the course accordingly before ever starting to move.
-** We will still move in a straight line.
-**
-** Note that if your computer is out, you ram things anyway. In
-** other words, if your computer and sins are both out, you're in
-** potentially very bad shape.
-**
-** Klingons get a chance to zap you as you leave the quadrant.
-** By the way, they also try to follow you (heh heh).
-**
-** Return value is the actual amount of time used.
-**
-**
-** Uses trace flag 4.
-*/
-
-double move(ramflag, course, time, speed)
-int ramflag;
-int course;
-double time;
-double speed;
-{
- double angle;
- double x, y, dx, dy;
- int ix, iy;
- double bigger;
- int n;
- int i;
- double dist;
- double sectsize;
- double xn;
- double evtime;
-
-# ifdef xTRACE
- if (Trace)
- printf("move: ramflag %d course %d time %.2f speed %.2f\n",
- ramflag, course, time, speed);
-# endif
- sectsize = NSECTS;
- /* initialize delta factors for move */
- angle = course * 0.0174532925;
- if (damaged(SINS))
- angle += Param.navigcrud[1] * (franf() - 0.5);
- else
- if (Ship.sinsbad)
- angle += Param.navigcrud[0] * (franf() - 0.5);
- dx = -cos(angle);
- dy = sin(angle);
- bigger = fabs(dx);
- dist = fabs(dy);
- if (dist > bigger)
- bigger = dist;
- dx /= bigger;
- dy /= bigger;
-
- /* check for long range tractor beams */
- /**** TEMPORARY CODE == DEBUGGING ****/
- evtime = Now.eventptr[E_LRTB]->date - Now.date;
-# ifdef xTRACE
- if (Trace)
- printf("E.ep = %p, ->evcode = %d, ->date = %.2f, evtime = %.2f\n",
- (void *)Now.eventptr[E_LRTB],
- Now.eventptr[E_LRTB]->evcode,
- Now.eventptr[E_LRTB]->date, evtime);
-# endif
- if (time > evtime && Etc.nkling < 3)
- {
- /* then we got a LRTB */
- evtime += 0.005;
- time = evtime;
- }
- else
- evtime = -1.0e50;
- dist = time * speed;
-
- /* move within quadrant */
- Sect[Ship.sectx][Ship.secty] = EMPTY;
- x = Ship.sectx + 0.5;
- y = Ship.secty + 0.5;
- xn = NSECTS * dist * bigger;
- n = xn + 0.5;
-# ifdef xTRACE
- if (Trace)
- printf("dx = %.2f, dy = %.2f, xn = %.2f, n = %d\n", dx, dy, xn, n);
-# endif
- Move.free = 0;
-
- for (i = 0; i < n; i++)
- {
- ix = (x += dx);
- iy = (y += dy);
-# ifdef xTRACE
- if (Trace)
- printf("ix = %d, x = %.2f, iy = %d, y = %.2f\n", ix, x, iy, y);
-# endif
- if (x < 0.0 || y < 0.0 || x >= sectsize || y >= sectsize)
- {
- /* enter new quadrant */
- dx = Ship.quadx * NSECTS + Ship.sectx + dx * xn;
- dy = Ship.quady * NSECTS + Ship.secty + dy * xn;
- if (dx < 0.0)
- ix = -1;
- else
- ix = dx + 0.5;
- if (dy < 0.0)
- iy = -1;
- else
- iy = dy + 0.5;
-# ifdef xTRACE
- if (Trace)
- printf("New quad: ix = %d, iy = %d\n", ix, iy);
-# endif
- Ship.sectx = x;
- Ship.secty = y;
- compkldist(0);
- Move.newquad = 2;
- attack(0);
- checkcond();
- Ship.quadx = ix / NSECTS;
- Ship.quady = iy / NSECTS;
- Ship.sectx = ix % NSECTS;
- Ship.secty = iy % NSECTS;
- if (ix < 0 || Ship.quadx >= NQUADS || iy < 0 || Ship.quady >= NQUADS)
- {
- if (!damaged(COMPUTER))
- {
- dumpme(0);
- }
- else
- lose(L_NEGENB);
- }
- initquad(0);
- n = 0;
- break;
- }
- if (Sect[ix][iy] != EMPTY)
- {
- /* we just hit something */
- if (!damaged(COMPUTER) && ramflag <= 0)
- {
- ix = x - dx;
- iy = y - dy;
- printf("Computer reports navigation error; %s stopped at %d,%d\n",
- Ship.shipname, ix, iy);
- Ship.energy -= Param.stopengy * speed;
- break;
- }
- /* test for a black hole */
- if (Sect[ix][iy] == HOLE)
- {
- /* get dumped elsewhere in the galaxy */
- dumpme(1);
- initquad(0);
- n = 0;
- break;
- }
- ram(ix, iy);
- break;
- }
- }
- if (n > 0)
- {
- dx = Ship.sectx - ix;
- dy = Ship.secty - iy;
- dist = sqrt(dx * dx + dy * dy) / NSECTS;
- time = dist / speed;
- if (evtime > time)
- time = evtime; /* spring the LRTB trap */
- Ship.sectx = ix;
- Ship.secty = iy;
- }
- Sect[Ship.sectx][Ship.secty] = Ship.ship;
- compkldist(0);
- return (time);
-}
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