void norm2(double *n1, double *n2){
//n1=0; n2=0;
static bool first=true;
if (first){
srand(time(NULL)); // initialize the rand() function
first=false;
}
double u1,u2;
u1 = rand0_1();
u2 = rand0_1();
*n1 = xnorm(u1,u2);
*n2 = ynorm(u1,u2);
}
/*
* setup the nstr_sect structure for sector selection.
* can select on either NS_ALL, NS_AREA, or NS_DIST
* iterate thru the "condarg" string looking
* for arguments to compile into the nstr.
* Using this function for anything but command arguments is usually
* incorrect, because it respects conditionals. Use the snxtsct_FOO()
* instead.
*/
int
snxtsct(struct nstr_sect *np, char *str)
{
struct range range;
struct natstr *natp;
coord cx, cy;
int dist;
char buf[1024];
if (!str || !*str) {
if (!(str = getstring("(sects)? ", buf)))
return 0;
} else
make_stale_if_command_arg(str);
switch (sarg_type(str)) {
case NS_AREA:
if (!sarg_area(str, &range))
return 0;
snxtsct_area(np, &range);
break;
case NS_DIST:
if (!sarg_range(str, &cx, &cy, &dist))
return 0;
snxtsct_dist(np, cx, cy, dist);
break;
case NS_ALL:
/*
* Can't use snxtsct_all(), as it would disclose the real
* origin. Use a world-sized area instead.
*/
natp = getnatp(player->cnum);
range.lx = xabs(natp, -WORLD_X / 2);
range.ly = yabs(natp, -WORLD_Y / 2);
range.hx = xnorm(range.lx + WORLD_X - 1);
range.hy = ynorm(range.ly + WORLD_Y - 1);
xysize_range(&range);
snxtsct_area(np, &range);
break;
default:
return 0;
}
return snxtsct_use_condarg(np);
}
void
move_sat(struct plnstr *pp)
{
coord x1, y1, x2, y2;
coord dx, dy;
float newtheta;
struct sctstr sect;
newtheta = pp->pln_theta + .05;
if (newtheta >= 1.0) {
newtheta -= 1.0;
}
x1 = (coord)(2 * pp->pln_theta * WORLD_X);
x1 = xnorm(x1);
y1 = (coord)(sin(6 * PI * pp->pln_theta) * (WORLD_Y / 4));
x2 = (coord)(2 * newtheta * WORLD_X);
x2 = xnorm(x2);
y2 = (coord)(sin(6 * PI * newtheta) * (WORLD_Y / 4));
dx = x1 - pp->pln_x;
dy = y1 - pp->pln_y;
x2 -= dx;
y2 -= dy;
if ((x2 + y2) & 1) {
x2++;
}
pp->pln_x = xnorm(x2);
pp->pln_y = ynorm(y2);
pp->pln_theta = newtheta;
getsect(pp->pln_x, pp->pln_y, §);
if (sect.sct_own)
if (pp->pln_own != sect.sct_own)
wu(0, sect.sct_own, "%s satellite spotted over %s\n",
cname(pp->pln_own), xyas(pp->pln_x, pp->pln_y,
sect.sct_own));
return;
}
int
nxtitem(struct nstr_item *np, void *ptr)
{
struct empobj *gp;
int selected;
if (np->sel == NS_UNDEF)
return 0;
gp = (struct empobj *)ptr;
do {
if (np->sel == NS_LIST) {
np->index++;
if (np->index >= np->size)
return 0;
np->cur = np->list[np->index];
} else if (np->sel == NS_CARGO) {
if (np->next < 0)
return 0;
np->cur = np->next;
np->next = unit_cargo_next(np->type, np->next);
} else {
np->cur++;
}
if (!ef_read(np->type, np->cur, ptr))
return 0;
selected = 1;
switch (np->sel) {
case NS_LIST:
case NS_CARGO:
case NS_ALL:
break;
case NS_DIST:
if (CANT_HAPPEN(!(ef_flags(np->type) & EFF_XY)))
return 0;
if (!xyinrange(gp->x, gp->y, &np->range)) {
selected = 0;
break;
}
np->curdist = mapdist(gp->x, gp->y, np->cx, np->cy);
if (np->curdist > np->dist)
selected = 0;
break;
case NS_AREA:
if (CANT_HAPPEN(!(ef_flags(np->type) & EFF_XY)))
return 0;
if (!xyinrange(gp->x, gp->y, &np->range))
selected = 0;
break;
case NS_XY:
if (CANT_HAPPEN(!(ef_flags(np->type) & EFF_XY)))
return 0;
if (xnorm(gp->x) != np->cx || ynorm(gp->y) != np->cy)
selected = 0;
break;
case NS_GROUP:
if (CANT_HAPPEN(!(ef_flags(np->type) & EFF_GROUP)))
return 0;
if (np->group != gp->group)
selected = 0;
break;
default:
CANT_REACH();
return 0;
}
if (selected && np->ncond) {
/* nstr_exec is expensive, so we do it last */
if (!nstr_exec(np->cond, np->ncond, ptr))
selected = 0;
}
} while (!selected);
return 1;
}
/*
* format: skywatch [<SECTS>]
*/
int
skyw(void)
{
struct sctstr sect;
struct nstr_sect nstr;
struct sky *skyp;
struct sky *list[TSIZE];
int i, n;
int vrange, see;
int x, y, dx, dy, dxmax;
int nsat = 0;
double tech;
struct nstr_item ni;
if (!snxtsct(&nstr, player->argp[1]))
return RET_SYN;
for (i = 0; i < TSIZE; i++)
list[i] = NULL;
skyp = malloc(sizeof(*skyp));
snxtitem_all(&ni, EF_PLANE);
while (nxtitem(&ni, &skyp->s_sat)) {
if (!skyp->s_sat.pln_own)
continue;
if (!pln_is_in_orbit(&skyp->s_sat))
continue;
getsect(skyp->s_sat.pln_x, skyp->s_sat.pln_y, §);
n = scthash(skyp->s_sat.pln_x, skyp->s_sat.pln_y, TSIZE);
skyp->s_spotted = 0;
skyp->s_next = list[n];
list[n] = skyp;
skyp = malloc(sizeof(*skyp));
nsat++;
}
/* get that last one! */
free(skyp);
pr("- = [ Skywatch report for %s ] = -\n", cname(player->cnum));
pr(" Country Satellite Location\n");
tech = tfact(player->cnum, 1.0);
while (nxtsct(&nstr, §) && nsat) {
if (sect.sct_own != player->cnum)
continue;
see = sect.sct_type == SCT_RADAR ? 14 : 4;
vrange = (int)(sect.sct_effic / 100.0 * see * tech);
if (vrange < 1)
vrange = 1;
for (dy = -vrange; dy <= vrange; dy++) {
y = ynorm(sect.sct_y + dy);
dxmax = 2 * vrange - abs(dy);
for (dx = -dxmax; dx <= dxmax; dx += 2) {
x = xnorm(sect.sct_x + dx);
n = scthash(x, y, TSIZE);
if (!list[n])
continue;
nsat -= showsat(&list[n], x, y);
}
}
}
/* free up the sky structs calloc'ed above */
for (i = 0; i < TSIZE; i++) {
while (NULL != (skyp = list[i])) {
list[i] = skyp->s_next;
free(skyp);
}
}
return RET_OK;
}
/*
* format: coastwatch [<SECTS>]
*/
int
coas(void)
{
struct sctstr sect;
struct nstr_sect nstr;
struct coast *cp;
struct coast *list[TSIZE];
int i, n;
int vrange, see;
int x, y, dx, dy, dxmax;
int nship = 0;
double tech;
struct nstr_item ni;
if (!snxtsct(&nstr, player->argp[1]))
return RET_SYN;
for (i = 0; i < TSIZE; i++)
list[i] = NULL;
cp = malloc(sizeof(*cp));
snxtitem_all(&ni, EF_SHIP);
while (nxtitem(&ni, &cp->c_shp)) {
if (cp->c_shp.shp_own == 0 || cp->c_shp.shp_own == player->cnum)
continue;
/*
* don't bother putting subs in the table...
* unless they're in a sector you own (harbor or such)
*/
getsect(cp->c_shp.shp_x, cp->c_shp.shp_y, §);
if ((mchr[(int)cp->c_shp.shp_type].m_flags & M_SUB) &&
(sect.sct_own != player->cnum))
continue;
n = scthash(cp->c_shp.shp_x, cp->c_shp.shp_y, TSIZE);
cp->c_spotted = 0;
cp->c_number = i;
cp->c_next = list[n];
list[n] = cp;
cp = malloc(sizeof(*cp));
nship++;
}
/* get that last one! */
free(cp);
pr("- = [ Coastwatch report for %s ] = -\n", cname(player->cnum));
pr(" Country Ship Location\n");
tech = tfact(player->cnum, 1.0);
while (nxtsct(&nstr, §) && nship) {
if (sect.sct_own != player->cnum)
continue;
see = sect.sct_type == SCT_RADAR ? 14 : 4;
vrange = (int)(sect.sct_effic / 100.0 * see * tech);
if (vrange < 1)
vrange = 1;
for (dy = -vrange; dy <= vrange; dy++) {
y = ynorm(sect.sct_y + dy);
dxmax = 2 * vrange - abs(dy);
for (dx = -dxmax; dx <= dxmax; dx += 2) {
x = xnorm(sect.sct_x + dx);
n = scthash(x, y, TSIZE);
if (!list[n])
continue;
nship -= showship(&list[n], x, y);
}
}
}
/* free up the coast structs calloc'ed above */
for (i = 0; i < TSIZE; i++) {
while (NULL != (cp = list[i])) {
list[i] = cp->c_next;
free(cp);
}
}
return RET_OK;
}
