win()
{
long s;
extern long score();
extern struct cvntab Skitab[];
register struct cvntab *p;
sleep(1);
printf("\nCongratulations, you have saved the Federation\n");
Move.endgame = 1;
/* print and return the score */
s = score();
/* decide if she gets a promotion */
if (Game.helps == 0 && Game.killb == 0 && Game.killinhab == 0 && 5 * Game.kills + Game.deaths < 100 &&
s >= 1000 && Ship.ship == ENTERPRISE)
{
printf("In fact, you are promoted one step in rank,\n");
if (Game.skill >= 6)
printf("to the exalted rank of Commodore Emeritus\n");
else
{
p = &Skitab[Game.skill - 1];
printf("from %s%s ", p->abrev, p->full);
p++;
printf("to %s%s\n", p->abrev, p->full);
}
}
/* clean out input, and request new game */
skiptonl(0);
reset();
}
void play()
{
while (1) {
Move.free = 1;
Move.time = 0.0;
Move.shldchg = 0;
Move.newquad = 0;
Move.resting = 0;
skiptonl(0);
const struct cvntab* r = getcodpar("\nCommand", Comtab);
(*r->value)(r->value2);
events(0);
attack(0);
checkcond();
}
}
void lose(int why)
{
Game.killed = 1;
sleep(1);
printf("\n%s\n", Losemsg[why - 1]);
switch (why) {
case L_NOTIME:
Game.killed = 0;
break;
}
Move.endgame = -1;
score();
skiptonl(0);
longjmp(env, 1);
}
double
getfltpar(const char *s)
{
int i;
double d;
while (1) {
if (testnl() && s)
printf("%s: ", s);
i = scanf("%lf", &d);
if (i < 0)
exit(1);
if (i > 0 && testterm())
return (d);
printf("invalid input; please enter a double\n");
skiptonl(0);
}
}
int
getintpar(const char *s)
{
int i;
int n;
while (1) {
if (testnl() && s)
printf("%s: ", s);
i = scanf("%d", &n);
if (i < 0)
exit(1);
if (i > 0 && testterm())
return (n);
printf("invalid input; please enter an integer\n");
skiptonl(0);
}
}
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);
}
extern void scanerror(char *s) {
skiptonl(); /* flush up to newline */
yyerror(s);
errset = prerror = TRUE;
}
struct cvntab *
getcodpar(const char *s, struct cvntab tab[])
{
char input[100];
struct cvntab *r;
int flag;
char *p;
const char *q;
int c;
int f;
flag = 0;
while (1) {
flag |= (f = testnl());
if (flag)
printf("%s: ", s);
if (f)
cgetc(0); /* throw out the newline */
scanf("%*[ \t;]");
if ((c = scanf("%[^ \t;\n]", input)) < 0)
exit(1);
if (c == 0)
continue;
flag = 1;
/* if command list, print four per line */
if (input[0] == '?' && input[1] == 0) {
c = 4;
for (r = tab; r->abrev; r++) {
strcpy(input, r->abrev);
strcat(input, r->full);
printf("%14.14s", input);
if (--c > 0)
continue;
c = 4;
printf("\n");
}
if (c != 4)
printf("\n");
continue;
}
/* search for in table */
for (r = tab; r->abrev; r++) {
p = input;
for (q = r->abrev; *q; q++)
if (*p++ != *q)
break;
if (!*q) {
for (q = r->full; *p && *q; q++, p++)
if (*p != *q)
break;
if (!*p || !*q)
break;
}
}
/* check for not found */
if (!r->abrev) {
printf("invalid input; ? for valid inputs\n");
skiptonl(0);
}
else
return (r);
}
}