370 lines
9.3 KiB
C
370 lines
9.3 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[] = "@(#)phaser.c 8.1 (Berkeley) 5/31/93";
|
||
|
|
#endif /* not lint */
|
||
|
|
|
||
|
|
# include "trek.h"
|
||
|
|
# include "getpar.h"
|
||
|
|
|
||
|
|
/* factors for phaser hits; see description below */
|
||
|
|
|
||
|
|
# define ALPHA 3.0 /* spread */
|
||
|
|
# define BETA 3.0 /* franf() */
|
||
|
|
# define GAMMA 0.30 /* cos(angle) */
|
||
|
|
# define EPSILON 150.0 /* dist ** 2 */
|
||
|
|
# define OMEGA 10.596 /* overall scaling factor */
|
||
|
|
|
||
|
|
/* OMEGA ~= 100 * (ALPHA + 1) * (BETA + 1) / (EPSILON + 1) */
|
||
|
|
|
||
|
|
/*
|
||
|
|
** Phaser Control
|
||
|
|
**
|
||
|
|
** There are up to NBANKS phaser banks which may be fired
|
||
|
|
** simultaneously. There are two modes, "manual" and
|
||
|
|
** "automatic". In manual mode, you specify exactly which
|
||
|
|
** direction you want each bank to be aimed, the number
|
||
|
|
** of units to fire, and the spread angle. In automatic
|
||
|
|
** mode, you give only the total number of units to fire.
|
||
|
|
**
|
||
|
|
** The spread is specified as a number between zero and
|
||
|
|
** one, with zero being minimum spread and one being maximum
|
||
|
|
** spread. You will normally want zero spread, unless your
|
||
|
|
** short range scanners are out, in which case you probably
|
||
|
|
** don't know exactly where the Klingons are. In that case,
|
||
|
|
** you really don't have any choice except to specify a
|
||
|
|
** fairly large spread.
|
||
|
|
**
|
||
|
|
** Phasers spread slightly, even if you specify zero spread.
|
||
|
|
**
|
||
|
|
** Uses trace flag 30
|
||
|
|
*/
|
||
|
|
|
||
|
|
struct cvntab Matab[] =
|
||
|
|
{
|
||
|
|
"m", "anual", (int (*)())1, 0,
|
||
|
|
"a", "utomatic", 0, 0,
|
||
|
|
0
|
||
|
|
};
|
||
|
|
|
||
|
|
struct banks
|
||
|
|
{
|
||
|
|
int units;
|
||
|
|
double angle;
|
||
|
|
double spread;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
phaser()
|
||
|
|
{
|
||
|
|
register int i;
|
||
|
|
int j;
|
||
|
|
register struct kling *k;
|
||
|
|
double dx, dy;
|
||
|
|
double anglefactor, distfactor;
|
||
|
|
register struct banks *b;
|
||
|
|
int manual, flag, extra;
|
||
|
|
int hit;
|
||
|
|
double tot;
|
||
|
|
int n;
|
||
|
|
int hitreqd[NBANKS];
|
||
|
|
struct banks bank[NBANKS];
|
||
|
|
struct cvntab *ptr;
|
||
|
|
|
||
|
|
if (Ship.cond == DOCKED)
|
||
|
|
return(printf("Phasers cannot fire through starbase shields\n"));
|
||
|
|
if (damaged(PHASER))
|
||
|
|
return (out(PHASER));
|
||
|
|
if (Ship.shldup)
|
||
|
|
return (printf("Sulu: Captain, we cannot fire through shields.\n"));
|
||
|
|
if (Ship.cloaked)
|
||
|
|
{
|
||
|
|
printf("Sulu: Captain, surely you must realize that we cannot fire\n");
|
||
|
|
printf(" phasers with the cloaking device up.\n");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* decide if we want manual or automatic mode */
|
||
|
|
manual = 0;
|
||
|
|
if (testnl())
|
||
|
|
{
|
||
|
|
if (damaged(COMPUTER))
|
||
|
|
{
|
||
|
|
printf(Device[COMPUTER].name);
|
||
|
|
manual++;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
if (damaged(SRSCAN))
|
||
|
|
{
|
||
|
|
printf(Device[SRSCAN].name);
|
||
|
|
manual++;
|
||
|
|
}
|
||
|
|
if (manual)
|
||
|
|
printf(" damaged, manual mode selected\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!manual)
|
||
|
|
{
|
||
|
|
ptr = getcodpar("Manual or automatic", Matab);
|
||
|
|
manual = (int) ptr->value;
|
||
|
|
}
|
||
|
|
if (!manual && damaged(COMPUTER))
|
||
|
|
{
|
||
|
|
printf("Computer damaged, manual selected\n");
|
||
|
|
skiptonl(0);
|
||
|
|
manual++;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* initialize the bank[] array */
|
||
|
|
flag = 1;
|
||
|
|
for (i = 0; i < NBANKS; i++)
|
||
|
|
bank[i].units = 0;
|
||
|
|
if (manual)
|
||
|
|
{
|
||
|
|
/* collect manual mode statistics */
|
||
|
|
while (flag)
|
||
|
|
{
|
||
|
|
printf("%d units available\n", Ship.energy);
|
||
|
|
extra = 0;
|
||
|
|
flag = 0;
|
||
|
|
for (i = 0; i < NBANKS; i++)
|
||
|
|
{
|
||
|
|
b = &bank[i];
|
||
|
|
printf("\nBank %d:\n", i);
|
||
|
|
hit = getintpar("units");
|
||
|
|
if (hit < 0)
|
||
|
|
return;
|
||
|
|
if (hit == 0)
|
||
|
|
break;
|
||
|
|
extra += hit;
|
||
|
|
if (extra > Ship.energy)
|
||
|
|
{
|
||
|
|
printf("available energy exceeded. ");
|
||
|
|
skiptonl(0);
|
||
|
|
flag++;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
b->units = hit;
|
||
|
|
hit = getintpar("course");
|
||
|
|
if (hit < 0 || hit > 360)
|
||
|
|
return;
|
||
|
|
b->angle = hit * 0.0174532925;
|
||
|
|
b->spread = getfltpar("spread");
|
||
|
|
if (b->spread < 0 || b->spread > 1)
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
Ship.energy -= extra;
|
||
|
|
}
|
||
|
|
extra = 0;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
/* automatic distribution of power */
|
||
|
|
if (Etc.nkling <= 0)
|
||
|
|
return (printf("Sulu: But there are no Klingons in this quadrant\n"));
|
||
|
|
printf("Phasers locked on target. ");
|
||
|
|
while (flag)
|
||
|
|
{
|
||
|
|
printf("%d units available\n", Ship.energy);
|
||
|
|
hit = getintpar("Units to fire");
|
||
|
|
if (hit <= 0)
|
||
|
|
return;
|
||
|
|
if (hit > Ship.energy)
|
||
|
|
{
|
||
|
|
printf("available energy exceeded. ");
|
||
|
|
skiptonl(0);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
flag = 0;
|
||
|
|
Ship.energy -= hit;
|
||
|
|
extra = hit;
|
||
|
|
n = Etc.nkling;
|
||
|
|
if (n > NBANKS)
|
||
|
|
n = NBANKS;
|
||
|
|
tot = n * (n + 1) / 2;
|
||
|
|
for (i = 0; i < n; i++)
|
||
|
|
{
|
||
|
|
k = &Etc.klingon[i];
|
||
|
|
b = &bank[i];
|
||
|
|
distfactor = k->dist;
|
||
|
|
anglefactor = ALPHA * BETA * OMEGA / (distfactor * distfactor + EPSILON);
|
||
|
|
anglefactor *= GAMMA;
|
||
|
|
distfactor = k->power;
|
||
|
|
distfactor /= anglefactor;
|
||
|
|
hitreqd[i] = distfactor + 0.5;
|
||
|
|
dx = Ship.sectx - k->x;
|
||
|
|
dy = k->y - Ship.secty;
|
||
|
|
b->angle = atan2(dy, dx);
|
||
|
|
b->spread = 0.0;
|
||
|
|
b->units = ((n - i) / tot) * extra;
|
||
|
|
# ifdef xTRACE
|
||
|
|
if (Trace)
|
||
|
|
{
|
||
|
|
printf("b%d hr%d u%d df%.2f af%.2f\n",
|
||
|
|
i, hitreqd[i], b->units,
|
||
|
|
distfactor, anglefactor);
|
||
|
|
}
|
||
|
|
# endif
|
||
|
|
extra -= b->units;
|
||
|
|
hit = b->units - hitreqd[i];
|
||
|
|
if (hit > 0)
|
||
|
|
{
|
||
|
|
extra += hit;
|
||
|
|
b->units -= hit;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* give out any extra energy we might have around */
|
||
|
|
if (extra > 0)
|
||
|
|
{
|
||
|
|
for (i = 0; i < n; i++)
|
||
|
|
{
|
||
|
|
b = &bank[i];
|
||
|
|
hit = hitreqd[i] - b->units;
|
||
|
|
if (hit <= 0)
|
||
|
|
continue;
|
||
|
|
if (hit >= extra)
|
||
|
|
{
|
||
|
|
b->units += extra;
|
||
|
|
extra = 0;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
b->units = hitreqd[i];
|
||
|
|
extra -= hit;
|
||
|
|
}
|
||
|
|
if (extra > 0)
|
||
|
|
printf("%d units overkill\n", extra);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# ifdef xTRACE
|
||
|
|
if (Trace)
|
||
|
|
{
|
||
|
|
for (i = 0; i < NBANKS; i++)
|
||
|
|
{
|
||
|
|
b = &bank[i];
|
||
|
|
printf("b%d u%d", i, b->units);
|
||
|
|
if (b->units > 0)
|
||
|
|
printf(" a%.2f s%.2f\n", b->angle, b->spread);
|
||
|
|
else
|
||
|
|
printf("\n");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
# endif
|
||
|
|
|
||
|
|
/* actually fire the shots */
|
||
|
|
Move.free = 0;
|
||
|
|
for (i = 0; i < NBANKS; i++)
|
||
|
|
{
|
||
|
|
b = &bank[i];
|
||
|
|
if (b->units <= 0)
|
||
|
|
{
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
printf("\nPhaser bank %d fires:\n", i);
|
||
|
|
n = Etc.nkling;
|
||
|
|
k = Etc.klingon;
|
||
|
|
for (j = 0; j < n; j++)
|
||
|
|
{
|
||
|
|
if (b->units <= 0)
|
||
|
|
break;
|
||
|
|
/*
|
||
|
|
** The formula for hit is as follows:
|
||
|
|
**
|
||
|
|
** zap = OMEGA * [(sigma + ALPHA) * (rho + BETA)]
|
||
|
|
** / (dist ** 2 + EPSILON)]
|
||
|
|
** * [cos(delta * sigma) + GAMMA]
|
||
|
|
** * hit
|
||
|
|
**
|
||
|
|
** where sigma is the spread factor,
|
||
|
|
** rho is a random number (0 -> 1),
|
||
|
|
** GAMMA is a crud factor for angle (essentially
|
||
|
|
** cruds up the spread factor),
|
||
|
|
** delta is the difference in radians between the
|
||
|
|
** angle you are shooting at and the actual
|
||
|
|
** angle of the klingon,
|
||
|
|
** ALPHA scales down the significance of sigma,
|
||
|
|
** BETA scales down the significance of rho,
|
||
|
|
** OMEGA is the magic number which makes everything
|
||
|
|
** up to "* hit" between zero and one,
|
||
|
|
** dist is the distance to the klingon
|
||
|
|
** hit is the number of units in the bank, and
|
||
|
|
** zap is the amount of the actual hit.
|
||
|
|
**
|
||
|
|
** Everything up through dist squared should maximize
|
||
|
|
** at 1.0, so that the distance factor is never
|
||
|
|
** greater than one. Conveniently, cos() is
|
||
|
|
** never greater than one, but the same restric-
|
||
|
|
** tion applies.
|
||
|
|
*/
|
||
|
|
distfactor = BETA + franf();
|
||
|
|
distfactor *= ALPHA + b->spread;
|
||
|
|
distfactor *= OMEGA;
|
||
|
|
anglefactor = k->dist;
|
||
|
|
distfactor /= anglefactor * anglefactor + EPSILON;
|
||
|
|
distfactor *= b->units;
|
||
|
|
dx = Ship.sectx - k->x;
|
||
|
|
dy = k->y - Ship.secty;
|
||
|
|
anglefactor = atan2(dy, dx) - b->angle;
|
||
|
|
anglefactor = cos((anglefactor * b->spread) + GAMMA);
|
||
|
|
if (anglefactor < 0.0)
|
||
|
|
{
|
||
|
|
k++;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
hit = anglefactor * distfactor + 0.5;
|
||
|
|
k->power -= hit;
|
||
|
|
printf("%d unit hit on Klingon", hit);
|
||
|
|
if (!damaged(SRSCAN))
|
||
|
|
printf(" at %d,%d", k->x, k->y);
|
||
|
|
printf("\n");
|
||
|
|
b->units -= hit;
|
||
|
|
if (k->power <= 0)
|
||
|
|
{
|
||
|
|
killk(k->x, k->y);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
k++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* compute overkill */
|
||
|
|
for (i = 0; i < NBANKS; i++)
|
||
|
|
extra += bank[i].units;
|
||
|
|
if (extra > 0)
|
||
|
|
printf("\n%d units expended on empty space\n", extra);
|
||
|
|
}
|