int
do_look(int type)
{
int i;
struct nstr_item ni;
union empobj_storage unit;
struct sctstr sect;
int x, y;
unsigned char *bitmap;
int changed = 0;
if (CANT_HAPPEN(type != EF_LAND && type != EF_SHIP))
type = EF_SHIP;
if (!snxtitem(&ni, type, player->argp[1], NULL))
return RET_SYN;
bitmap = calloc((WORLD_SZ() + 7) / 8, 1);
if (!bitmap) {
logerror("malloc failed in do_look\n");
pr("Memory error. Tell the deity.\n");
return RET_FAIL;
}
while (nxtitem(&ni, &unit)) {
if (!player->owner)
continue;
if (type == EF_LAND) {
if (unit.land.lnd_ship >= 0)
continue;
if (unit.land.lnd_land >= 0)
continue;
/* Spies don't need military to do a "llook". Other
units do */
if ((unit.land.lnd_item[I_MILIT] <= 0) &&
!(lchr[(int)unit.land.lnd_type].l_flags & L_SPY))
continue;
look_land(&unit.land);
} else
look_ship(&unit.ship);
for (i = 0; i <= 6; i++) {
x = diroff[i][0] + unit.gen.x;
y = diroff[i][1] + unit.gen.y;
if (emp_getbit(x, y, bitmap))
continue;
emp_setbit(x, y, bitmap);
getsect(x, y, §);
if (sect.sct_type == SCT_WATER)
continue;
look_at_sect(§, 10);
changed += map_set(player->cnum, x, y,
dchr[sect.sct_type].d_mnem, 0);
if (opt_HIDDEN) {
setcont(player->cnum, sect.sct_own, FOUND_LOOK);
}
}
}
if (changed)
writemap(player->cnum);
free(bitmap);
return RET_OK;
}
/* Setup call to metamethod to be run by Assembler VM. */
static TValue *mmcall(lua_State *L, ASMFunction cont, cTValue *mo,
cTValue *a, cTValue *b)
{
/*
** |-- framesize -> top top+1 top+2 top+3
** before: [func slots ...]
** mm setup: [func slots ...] [cont|?] [mo|tmtype] [a] [b]
** in asm: [func slots ...] [cont|PC] [mo|delta] [a] [b]
** ^-- func base ^-- mm base
** after mm: [func slots ...] [result]
** ^-- copy to base[PC_RA] --/ for lj_cont_ra
** istruecond + branch for lj_cont_cond*
** ignore for lj_cont_nop
** next PC: [func slots ...]
*/
TValue *top = L->top;
if (curr_funcisL(L)) top = curr_topL(L);
setcont(top++, cont); /* Assembler VM stores PC in upper word or FR2. */
if (LJ_FR2) setnilV(top++);
copyTV(L, top++, mo); /* Store metamethod and two arguments. */
if (LJ_FR2) setnilV(top++);
copyTV(L, top, a);
copyTV(L, top+1, b);
return top; /* Return new base. */
}
/* Helper for equality comparisons. __eq metamethod. */
TValue *lj_meta_equal(lua_State *L, GCobj *o1, GCobj *o2, int ne)
{
/* Field metatable must be at same offset for GCtab and GCudata! */
cTValue *mo = lj_meta_fast(L, tabref(o1->gch.metatable), MM_eq);
if (mo) {
TValue *top;
uint32_t it;
if (tabref(o1->gch.metatable) != tabref(o2->gch.metatable)) {
cTValue *mo2 = lj_meta_fast(L, tabref(o2->gch.metatable), MM_eq);
if (mo2 == NULL || !lj_obj_equal(mo, mo2))
return (TValue *)(intptr_t)ne;
}
top = curr_top(L);
setcont(top, ne ? lj_cont_condf : lj_cont_condt);
copyTV(L, top+1, mo);
it = ~(uint32_t)o1->gch.gct;
setgcV(L, top+2, o1, it);
setgcV(L, top+3, o2, it);
return top+2; /* Trigger metamethod call. */
}
return (TValue *)(intptr_t)ne;
}
static int
showsat(struct sky **skypp, int x, int y)
{
struct sky *skyp;
struct sky *todelete = NULL;
struct sky **prev;
int nsat = 0;
prev = NULL;
skyp = *skypp;
prev = skypp;
do {
/* we delete it, we free it. */
if (todelete) {
free(todelete);
todelete = NULL;
}
if (skyp->s_sat.pln_x != x || skyp->s_sat.pln_y != y) {
prev = &(*prev)->s_next;
continue;
}
pr(" %12.12s (#%3d) %s @ %s\n",
cname(skyp->s_sat.pln_own), skyp->s_sat.pln_own,
prplane(&skyp->s_sat), xyas(x, y, player->cnum));
if (opt_HIDDEN) {
/* FOUND_COAST should probably be changed to FOUND_SKY -KHS */
setcont(player->cnum, skyp->s_sat.pln_own, FOUND_COAST);
}
*prev = skyp->s_next;
todelete = skyp;
nsat++;
} while (NULL != (skyp = skyp->s_next));
/* check that last one! */
if (todelete)
free(todelete);
return nsat;
}
static int
showship(struct coast **cpp, int x, int y)
{
struct coast *cp;
struct coast *todelete = NULL;
struct coast **prev;
int nship = 0;
prev = NULL;
cp = *cpp;
prev = cpp;
do {
/* we delete it, we free it. */
if (todelete) {
free(todelete);
todelete = NULL;
}
if (cp->c_shp.shp_x != x || cp->c_shp.shp_y != y) {
prev = &(*prev)->c_next;
continue;
}
pr(" %12.12s (#%3d) %s @ %s\n",
cname(cp->c_shp.shp_own), cp->c_shp.shp_own,
prship(&cp->c_shp), xyas(x, y, player->cnum));
if (opt_HIDDEN) {
setcont(player->cnum, cp->c_shp.shp_own, FOUND_COAST);
}
*prev = cp->c_next;
todelete = cp;
nship++;
} while (NULL != (cp = cp->c_next));
/* check that last one! */
if (todelete)
free(todelete);
return nship;
}
void
setrel(natid us, natid them, int rel)
{
struct natstr *mynp = getnatp(us);
struct natstr *themnp = getnatp(them);
int oldrel;
char *whichway;
int n_up = 0;
int n_down = 0;
char *addendum = NULL;
if (CANT_HAPPEN(rel < AT_WAR))
rel = AT_WAR;
if (CANT_HAPPEN(rel > ALLIED))
rel = ALLIED;
if (CANT_HAPPEN(!mynp || !themnp))
return;
if (us == them)
return;
oldrel = relations_with(us, them);
if (oldrel == rel)
return;
if (rel > oldrel)
whichway = "upgraded";
else
whichway = "downgraded";
if (rel == ALLIED) {
addendum = "Congratulations!";
n_up = N_DECL_ALLY;
} else if (rel == FRIENDLY) {
n_up = N_UP_FRIENDLY;
n_down = N_DOWN_FRIENDLY;
} else if (rel == NEUTRAL) {
n_up = N_UP_NEUTRAL;
n_down = N_DOWN_NEUTRAL;
} else if (rel == HOSTILE) {
addendum = "Another cold war...";
n_up = N_UP_HOSTILE;
n_down = N_DOWN_HOSTILE;
} else if (rel < HOSTILE) {
addendum = "Declaration made (give 'em hell).";
n_down = N_DECL_WAR;
}
if (addendum && us == player->cnum && !update_running)
pr("%s\n", addendum);
mpr(us, "Diplomatic relations with %s %s to \"%s\".\n",
cname(them), whichway, relates[rel]);
if (!(getrejects(us, themnp) & REJ_TELE))
mpr(them,
"Country %s has %s their relations with you to \"%s\"!\n",
prnat(mynp), whichway, relates[rel]);
putrel(mynp, them, rel);
putnat(mynp);
if (!player->god) {
if (oldrel == ALLIED)
nreport(us, N_DIS_ALLY, them, 1);
else if (oldrel < HOSTILE && rel >= HOSTILE)
nreport(us, N_DIS_WAR, them, 1);
if (rel > oldrel)
nreport(us, n_up, them, 1);
else
nreport(us, n_down, them, 1);
}
if (opt_HIDDEN)
setcont(them, us, FOUND_TELE);
}
/* Helper for CAT. Coercion, iterative concat, __concat metamethod. */
TValue *lj_meta_cat(lua_State *L, TValue *top, int left)
{
int fromc = 0;
if (left < 0) { left = -left; fromc = 1; }
do {
if (!(tvisstr(top) || tvisnumber(top)) ||
!(tvisstr(top-1) || tvisnumber(top-1))) {
cTValue *mo = lj_meta_lookup(L, top-1, MM_concat);
if (tvisnil(mo)) {
mo = lj_meta_lookup(L, top, MM_concat);
if (tvisnil(mo)) {
if (tvisstr(top-1) || tvisnumber(top-1)) top++;
lj_err_optype(L, top-1, LJ_ERR_OPCAT);
return NULL; /* unreachable */
}
}
/* One of the top two elements is not a string, call __cat metamethod:
**
** before: [...][CAT stack .........................]
** top-1 top top+1 top+2
** pick two: [...][CAT stack ...] [o1] [o2]
** setup mm: [...][CAT stack ...] [cont|?] [mo|tmtype] [o1] [o2]
** in asm: [...][CAT stack ...] [cont|PC] [mo|delta] [o1] [o2]
** ^-- func base ^-- mm base
** after mm: [...][CAT stack ...] <--push-- [result]
** next step: [...][CAT stack .............]
*/
copyTV(L, top+2*LJ_FR2+2, top); /* Carefully ordered stack copies! */
copyTV(L, top+2*LJ_FR2+1, top-1);
copyTV(L, top+LJ_FR2, mo);
setcont(top-1, lj_cont_cat);
if (LJ_FR2) { setnilV(top); setnilV(top+2); top += 2; }
return top+1; /* Trigger metamethod call. */
} else {
/* Pick as many strings as possible from the top and concatenate them:
**
** before: [...][CAT stack ...........................]
** pick str: [...][CAT stack ...] [...... strings ......]
** concat: [...][CAT stack ...] [result]
** next step: [...][CAT stack ............]
*/
TValue *e, *o = top;
uint64_t tlen = tvisstr(o) ? strV(o)->len : STRFMT_MAXBUF_NUM;
char *p, *buf;
do {
o--; tlen += tvisstr(o) ? strV(o)->len : STRFMT_MAXBUF_NUM;
} while (--left > 0 && (tvisstr(o-1) || tvisnumber(o-1)));
if (tlen >= LJ_MAX_STR) lj_err_msg(L, LJ_ERR_STROV);
p = buf = lj_buf_tmp(L, (MSize)tlen);
for (e = top, top = o; o <= e; o++) {
if (tvisstr(o)) {
GCstr *s = strV(o);
MSize len = s->len;
p = lj_buf_wmem(p, strdata(s), len);
} else if (tvisint(o)) {
p = lj_strfmt_wint(p, intV(o));
} else {
lua_assert(tvisnum(o));
p = lj_strfmt_wnum(p, o);
}
}
setstrV(L, top, lj_str_new(L, buf, (size_t)(p-buf)));
}
} while (left >= 1);
if (LJ_UNLIKELY(G(L)->gc.total >= G(L)->gc.threshold)) {
if (!fromc) L->top = curr_topL(L);
lj_gc_step(L);
}
return NULL;
}
int
tele(void)
{
natid to;
struct natstr *natp;
char buf[MAXTELSIZE + 1]; /* UTF-8 */
int n;
if (*player->argp[0] == 'a') {
if (getele("everybody", buf) <= 0) {
pr("Announcement aborted\n");
return RET_FAIL;
}
pr("\n");
to = 0;
if (typed_wu(player->cnum, to, buf, TEL_ANNOUNCE) < 0)
logerror("tele: typed_wu failed to #%d", to);
} else if (*player->argp[0] == 'p') {
if (getele("your Gracious Deity", buf) <= 0) {
pr("Prayer aborted\n");
return RET_FAIL;
}
pr("\n");
if (typed_wu(player->cnum, 0, buf, TEL_NORM) < 0)
logerror("tele: typed_wu failed to #0");
} else {
int kk;
kk = 1;
do {
if ((n = natarg(player->argp[kk], "for which country? ")) < 0)
return RET_SYN;
to = n;
if (kk == 1) {
if (player->argp[2]) {
if (getele("multiple recipients", buf) < 0) {
pr("Telegram aborted\n");
return RET_FAIL;
}
} else {
if (getele(cname(to), buf) < 0) {
pr("Telegram aborted\n");
return RET_FAIL;
}
}
pr("\n");
}
natp = getnatp(to);
if (natp->nat_stat < STAT_SANCT) {
pr("%s has no \"telegram privileges\".\n", cname(to));
kk++;
continue;
}
if (!player->god
&& (getrejects(player->cnum, natp) & REJ_TELE)) {
pr("%s is rejecting your telegrams.\n", cname(to));
return RET_SYN;
}
if (typed_wu(player->cnum, to, buf, TEL_NORM) < 0) {
logerror("tele: typed_wu failed to #%d", n);
return RET_FAIL;
}
if (!player->god && natp->nat_stat != STAT_GOD
&& player->cnum != to)
nreport(player->cnum, N_SENT_TEL, to, 1);
if (opt_HIDDEN) {
setcont(to, player->cnum, FOUND_TELE);
}
kk++;
} while (player->argp[kk] != NULL);
}
return RET_OK;
}
/* Helper for CAT. Coercion, iterative concat, __concat metamethod. */
TValue *lj_meta_cat(lua_State *L, TValue *top, int left)
{
do {
int n = 1;
if (!(tvisstr(top-1) || tvisnumber(top-1)) || !tostring(L, top)) {
cTValue *mo = lj_meta_lookup(L, top-1, MM_concat);
if (tvisnil(mo)) {
mo = lj_meta_lookup(L, top, MM_concat);
if (tvisnil(mo)) {
if (tvisstr(top-1) || tvisnumber(top-1)) top++;
lj_err_optype(L, top-1, LJ_ERR_OPCAT);
return NULL; /* unreachable */
}
}
/* One of the top two elements is not a string, call __cat metamethod:
**
** before: [...][CAT stack .........................]
** top-1 top top+1 top+2
** pick two: [...][CAT stack ...] [o1] [o2]
** setup mm: [...][CAT stack ...] [cont|?] [mo|tmtype] [o1] [o2]
** in asm: [...][CAT stack ...] [cont|PC] [mo|delta] [o1] [o2]
** ^-- func base ^-- mm base
** after mm: [...][CAT stack ...] <--push-- [result]
** next step: [...][CAT stack .............]
*/
copyTV(L, top+2, top); /* Careful with the order of stack copies! */
copyTV(L, top+1, top-1);
copyTV(L, top, mo);
setcont(top-1, lj_cont_cat);
return top+1; /* Trigger metamethod call. */
} else if (strV(top)->len == 0) { /* Shortcut. */
(void)tostring(L, top-1);
} else {
/* Pick as many strings as possible from the top and concatenate them:
**
** before: [...][CAT stack ...........................]
** pick str: [...][CAT stack ...] [...... strings ......]
** concat: [...][CAT stack ...] [result]
** next step: [...][CAT stack ............]
*/
MSize tlen = strV(top)->len;
char *buffer;
int i;
for (n = 1; n <= left && tostring(L, top-n); n++) {
MSize len = strV(top-n)->len;
if (len >= LJ_MAX_STR - tlen)
lj_err_msg(L, LJ_ERR_STROV);
tlen += len;
}
buffer = lj_str_needbuf(L, &G(L)->tmpbuf, tlen);
n--;
tlen = 0;
for (i = n; i >= 0; i--) {
MSize len = strV(top-i)->len;
memcpy(buffer + tlen, strVdata(top-i), len);
tlen += len;
}
setstrV(L, top-n, lj_str_new(L, buffer, tlen));
}
left -= n;
top -= n;
} while (left >= 1);
lj_gc_check_fixtop(L);
return NULL;
}
static void
look_land(struct lndstr *lookland)
{
struct plnstr *pp;
struct lndstr *lp;
double drange;
int range;
int vrange;
int i;
int dist;
drange = techfact(lookland->lnd_tech, lchr[lookland->lnd_type].l_spy);
drange *= lookland->lnd_effic / 100.0;
range = ldround(drange, 1);
if (range == 0)
return;
for (i = 0; NULL != (lp = getlandp(i)); i++) {
if (lp->lnd_own == player->cnum || lp->lnd_own == 0)
continue;
if (lp->lnd_ship >= 0 || lp->lnd_land >= 0)
continue;
/* Don't always see spies */
if (lchr[(int)lp->lnd_type].l_flags & L_SPY) {
/* If it's on a ship or unit, assume it's hidden
enough not to be seen */
if (lp->lnd_ship >= 0 || lp->lnd_land >= 0)
continue;
if (!(chance(LND_SPY_DETECT_CHANCE(lp->lnd_effic))))
continue;
}
vrange = ldround((lnd_vis(lp) * range) / 20.0, 1);
dist = mapdist(lp->lnd_x, lp->lnd_y,
lookland->lnd_x, lookland->lnd_y);
if (dist > vrange)
continue;
pr("%s %s (approx %d mil) @ %s\n",
prnatid(lp->lnd_own), prland(lp),
roundintby(lp->lnd_item[I_MILIT], 20),
xyas(lp->lnd_x, lp->lnd_y, player->cnum));
if (opt_HIDDEN)
setcont(player->cnum, lp->lnd_own, FOUND_LOOK);
}
for (i = 0; NULL != (pp = getplanep(i)); i++) {
if (pp->pln_own == player->cnum || pp->pln_own == 0)
continue;
if (pp->pln_ship >= 0 || pp->pln_land >= 0)
continue;
if (pp->pln_flags & PLN_LAUNCHED)
continue;
vrange = ldround((10 * range) / 20.0, 1);
dist = mapdist(pp->pln_x, pp->pln_y,
lookland->lnd_x, lookland->lnd_y);
if (dist > vrange)
continue;
pr("%s %s @ %s\n",
prnatid(pp->pln_own), prplane(pp),
xyas(pp->pln_x, pp->pln_y, player->cnum));
if (opt_HIDDEN)
setcont(player->cnum, pp->pln_own, FOUND_LOOK);
}
}
static void
look_ship(struct shpstr *lookship)
{
struct shpstr *sp;
struct mchrstr *smcp;
struct mchrstr *tmcp;
struct sctstr sect;
int range;
int vrange;
int i;
int dist;
range = (int)techfact(lookship->shp_tech,
mchr[(int)lookship->shp_type].m_vrnge);
range = range * (lookship->shp_effic / 100.0);
smcp = &mchr[(int)lookship->shp_type];
if (smcp->m_flags & M_SUB)
range = MIN(range, 1);
for (i = 0; NULL != (sp = getshipp(i)); i++) {
if (sp->shp_own == player->cnum || sp->shp_own == 0)
continue;
dist = mapdist(sp->shp_x, sp->shp_y,
lookship->shp_x, lookship->shp_y);
if (dist > ship_max_interdiction_range)
continue;
tmcp = &mchr[(int)sp->shp_type];
if (smcp->m_flags & M_SUB)
vrange = (int)(shp_visib(sp) * range / 30.0);
else
vrange = (int)(shp_visib(sp) * range / 20.0);
getsect(sp->shp_x, sp->shp_y, §);
if (sect.sct_type != SCT_WATER)
vrange = MAX(1, vrange);
if (dist > vrange)
continue;
if (smcp->m_flags & M_SUB) {
if (tmcp->m_flags & M_SONAR && dist < 2) {
if (sp->shp_own != 0)
wu(0, sp->shp_own,
"%s detected surfacing noises in %s.\n",
prship(sp),
xyas(lookship->shp_x, lookship->shp_y,
sp->shp_own));
}
if (dist == 0 && (tmcp->m_flags & M_SUB) == 0)
if (sp->shp_own != 0)
wu(0, sp->shp_own,
"Periscope spotted in %s by %s\n",
xyas(lookship->shp_x, lookship->shp_y,
sp->shp_own), prship(sp));
}
/* subs at sea only seen by sonar */
if (tmcp->m_flags & M_SUB && sect.sct_type == SCT_WATER)
continue;
pr("%s %s @ %s\n",
prnatid(sp->shp_own), prship(sp),
xyas(sp->shp_x, sp->shp_y, player->cnum));
if (opt_HIDDEN)
setcont(player->cnum, sp->shp_own, FOUND_LOOK);
}
}