-/* $NetBSD: move.c,v 1.3 1995/04/22 10:59:12 cgd Exp $ */
+/* $NetBSD: move.c,v 1.11 2011/07/03 06:44:01 mrg Exp $ */
/*
* Copyright (c) 1980, 1993
* 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
+ * 3. 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.
*
* SUCH DAMAGE.
*/
+#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)move.c 8.1 (Berkeley) 5/31/93";
#else
-static char rcsid[] = "$NetBSD: move.c,v 1.3 1995/04/22 10:59:12 cgd Exp $";
+__RCSID("$NetBSD: move.c,v 1.11 2011/07/03 06:44:01 mrg Exp $");
#endif
#endif /* not lint */
-# include "trek.h"
+#include <stdio.h>
+#include <math.h>
+#include <float.h>
+#include "trek.h"
/*
** Move Under Warp or Impulse Power
** Uses trace flag 4.
*/
-double move(ramflag, course, time, speed)
-int ramflag;
-int course;
-double time;
-double speed;
+double
+move(int ramflag, int course, double time, double speed)
{
double angle;
double x, y, dx, dy;
- register int ix, iy;
+ int ix = 0, iy = 0;
double bigger;
int n;
- register int i;
+ int i;
double dist;
double sectsize;
double xn;
double evtime;
-# ifdef xTRACE
+#ifdef xTRACE
if (Trace)
printf("move: ramflag %d course %d time %.2f speed %.2f\n",
ramflag, course, time, speed);
-# endif
+#endif
sectsize = NSECTS;
/* initialize delta factors for move */
angle = course * 0.0174532925;
/* check for long range tractor beams */
/**** TEMPORARY CODE == DEBUGGING ****/
evtime = Now.eventptr[E_LRTB]->date - Now.date;
-# ifdef xTRACE
+#ifdef xTRACE
if (Trace)
- printf("E.ep = %u, ->evcode = %d, ->date = %.2f, evtime = %.2f\n",
+ printf("E.ep = %p, ->evcode = %d, ->date = %.2f, "
+ "evtime = %.2f\n",
Now.eventptr[E_LRTB], Now.eventptr[E_LRTB]->evcode,
Now.eventptr[E_LRTB]->date, evtime);
-# endif
- if (time > evtime && Etc.nkling < 3)
- {
+#endif
+ if (time > evtime && Etc.nkling < 3) {
/* then we got a LRTB */
evtime += 0.005;
time = evtime;
- }
- else
- evtime = -1.0e50;
+ } else
+ evtime = DBL_MIN;
dist = time * speed;
/* move within quadrant */
y = Ship.secty + 0.5;
xn = NSECTS * dist * bigger;
n = xn + 0.5;
-# ifdef xTRACE
+#ifdef xTRACE
if (Trace)
- printf("dx = %.2f, dy = %.2f, xn = %.2f, n = %d\n", dx, dy, xn, n);
-# endif
+ printf("dx = %.2f, dy = %.2f, xn = %.2f, n = %d\n",
+ dx, dy, xn, n);
+#endif
Move.free = 0;
- for (i = 0; i < n; i++)
- {
+ for (i = 0; i < n; i++) {
ix = (x += dx);
iy = (y += dy);
-# ifdef xTRACE
+#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)
- {
+ 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;
iy = -1;
else
iy = dy + 0.5;
-# ifdef xTRACE
+#ifdef xTRACE
if (Trace)
printf("New quad: ix = %d, iy = %d\n", ix, iy);
-# endif
+#endif
Ship.sectx = x;
Ship.secty = y;
compkldist(0);
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))
- {
+ if (ix < 0 || Ship.quadx >= NQUADS || iy < 0 ||
+ Ship.quady >= NQUADS) {
+ if (!damaged(COMPUTER)) {
dumpme(0);
- }
- else
+ } else
lose(L_NEGENB);
+ }
initquad(0);
n = 0;
break;
}
- if (Sect[ix][iy] != EMPTY)
- {
+ if (Sect[ix][iy] != EMPTY) {
/* we just hit something */
- if (!damaged(COMPUTER) && ramflag <= 0)
- {
+ if (!damaged(COMPUTER) && ramflag <= 0) {
ix = x - dx;
iy = y - dy;
- printf("Computer reports navigation error; %s stopped at %d,%d\n",
+ 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)
- {
+ if (Sect[ix][iy] == HOLE) {
/* get dumped elsewhere in the galaxy */
dumpme(1);
initquad(0);
break;
}
}
- if (n > 0)
- {
+ 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 */
+ if (evtime > time) {
+ /* spring the LRTB trap */
+ time = evtime;
+ }
Ship.sectx = ix;
Ship.secty = iy;
}
git.ckatri.com / bsdgames-darwin.git / blobdiff