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4575 lines (4191 loc) · 161 KB
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/* NetHack 5.0 hack.c $NHDT-Date: 1781973050 2026/06/20 16:30:50 $ $NHDT-Branch: NetHack-5.0 $:$NHDT-Revision: 1.508 $ */
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/*-Copyright (c) Derek S. Ray, 2015. */
/* NetHack may be freely redistributed. See license for details. */
#include "hack.h"
#include "extern.h"
/* #define DEBUG */ /* uncomment for debugging */
staticfn boolean could_move_onto_boulder(coordxy, coordxy);
staticfn void dopush(coordxy, coordxy, coordxy, coordxy, struct obj *,
boolean);
staticfn void cannot_push_msg(struct obj *, coordxy, coordxy);
staticfn int cannot_push(struct obj *, coordxy, coordxy);
staticfn void rock_disappear_msg(struct obj *);
staticfn void moverock_done(coordxy, coordxy);
staticfn int moverock(void);
staticfn int moverock_core(coordxy, coordxy);
staticfn void dosinkfall(void);
staticfn boolean findtravelpath(int);
staticfn boolean trapmove(coordxy, coordxy, struct trap *);
staticfn int QSORTCALLBACK notice_mons_cmp(const genericptr,
const genericptr) NONNULLPTRS;
staticfn schar u_simple_floortyp(coordxy, coordxy);
staticfn boolean swim_move_danger(coordxy, coordxy);
staticfn boolean domove_bump_mon(struct monst *, int) NONNULLARG1;
staticfn boolean domove_attackmon_at(struct monst *, coordxy, coordxy,
boolean *) NONNULLPTRS;
staticfn boolean domove_fight_ironbars(coordxy, coordxy);
staticfn boolean domove_fight_web(coordxy, coordxy);
staticfn boolean domove_swap_with_pet(struct monst *,
coordxy, coordxy) NONNULLARG1;
staticfn boolean domove_fight_empty(coordxy, coordxy);
staticfn boolean air_turbulence(void);
staticfn void slippery_ice_fumbling(void);
staticfn boolean impaired_movement(coordxy *, coordxy *) NONNULLPTRS;
staticfn boolean avoid_moving_on_trap(coordxy, coordxy, boolean);
staticfn boolean avoid_moving_on_liquid(coordxy, coordxy, boolean);
staticfn boolean avoid_running_into_trap_or_liquid(coordxy, coordxy);
staticfn boolean avoid_trap_andor_region(coordxy, coordxy);
staticfn boolean move_out_of_bounds(coordxy, coordxy);
staticfn boolean carrying_too_much(void);
staticfn boolean escape_from_sticky_mon(coordxy, coordxy);
staticfn void domove_core(void);
staticfn void maybe_smudge_engr(coordxy, coordxy, coordxy, coordxy);
staticfn struct monst *monstinroom(struct permonst *, int) NONNULLARG1;
staticfn boolean furniture_present(int, int);
staticfn void move_update(boolean);
staticfn int pickup_checks(void);
staticfn void maybe_wail(void);
staticfn boolean water_turbulence(coordxy *, coordxy *);
staticfn int QSORTCALLBACK cmp_weights(const void *, const void *);
#define IS_SHOP(x) (svr.rooms[x].rtype >= SHOPBASE)
/* XXX: if more sources of water walking than just boots are added,
cause_known(insight.c) should be externified and used for this */
#define Known_wwalking \
(uarmf && uarmf->otyp == WATER_WALKING_BOOTS \
&& objects[WATER_WALKING_BOOTS].oc_name_known \
&& !u.usteed)
#define Known_lwalking \
(Known_wwalking && Fire_resistance \
&& uarmf->oerodeproof && uarmf->rknown)
/* mode values for findtravelpath() */
#define TRAVP_TRAVEL 0
#define TRAVP_GUESS 1
#define TRAVP_VALID 2
anything *
uint_to_any(unsigned ui)
{
gt.tmp_anything = cg.zeroany;
gt.tmp_anything.a_uint = ui;
return >.tmp_anything;
}
anything *
long_to_any(long lng)
{
gt.tmp_anything = cg.zeroany;
gt.tmp_anything.a_long = lng;
return >.tmp_anything;
}
anything *
monst_to_any(struct monst *mtmp)
{
gt.tmp_anything = cg.zeroany;
gt.tmp_anything.a_monst = mtmp;
return >.tmp_anything;
}
anything *
obj_to_any(struct obj *obj)
{
gt.tmp_anything = cg.zeroany;
gt.tmp_anything.a_obj = obj;
return >.tmp_anything;
}
boolean
revive_nasty(coordxy x, coordxy y, const char *msg)
{
struct obj *otmp = 0, *otmp2 = 0;
struct monst *mtmp;
coord cc;
boolean revived = FALSE;
for (otmp = svl.level.objects[x][y]; otmp; otmp = otmp2) {
otmp2 = otmp->nexthere;
if (otmp->otyp == CORPSE
&& (is_rider(&mons[otmp->corpsenm])
|| otmp->corpsenm == PM_WIZARD_OF_YENDOR)) {
/* move any living monster already at that location */
if ((mtmp = m_at(x, y)) && enexto(&cc, x, y, mtmp->data))
rloc_to(mtmp, cc.x, cc.y);
if (msg)
Norep("%s", msg);
revived = revive_corpse(otmp);
}
}
/* this location might not be safe, if not, move revived monster */
if (revived) {
mtmp = m_at(x, y);
if (mtmp && !goodpos(x, y, mtmp, 0)
&& enexto(&cc, x, y, mtmp->data)) {
rloc_to(mtmp, cc.x, cc.y);
}
/* else impossible? */
}
return revived;
}
#define squeezeablylightinvent() (!gi.invent \
|| inv_weight() <= (WT_SQUEEZABLE_INV * -1))
/* can hero move onto a spot containing one or more boulders?
used for m<dir> and travel and during boulder push failure */
staticfn boolean
could_move_onto_boulder(coordxy sx, coordxy sy)
{
/* can if able to phaze through rock (must be poly'd, so not riding) */
if (Passes_walls)
return TRUE;
/* can't when riding */
if (u.usteed)
return FALSE;
/* can if a giant, unless doing so allows hero to pass into a
diagonal squeeze at the same time */
if (throws_rocks(gy.youmonst.data))
return (!u.dx || !u.dy || !(IS_OBSTRUCTED(levl[u.ux][sy].typ)
&& IS_OBSTRUCTED(levl[sx][u.uy].typ)));
/* can if tiny (implies carrying very little else couldn't move at all) */
if (verysmall(gy.youmonst.data))
return TRUE;
/* can squeeze to spot if carrying extremely little, otherwise can't */
return squeezeablylightinvent();
}
staticfn void
dopush(
coordxy sx,
coordxy sy,
coordxy rx,
coordxy ry,
struct obj *otmp,
boolean costly)
{
struct monst *shkp;
{
const char *what;
boolean givemesg, easypush;
/* give boulder pushing feedback if this is a different
boulder than the last one pushed or if it's been at
least 2 turns since we last pushed this boulder;
unlike with Norep(), intervening messages don't cause
it to repeat, only doing something else in the meantime */
if (otmp->o_id != gb.bldrpush_oid) {
gb.bldrpushtime = svm.moves + 1L;
gb.bldrpush_oid = otmp->o_id;
}
givemesg = (svm.moves > gb.bldrpushtime + 2L
|| svm.moves < gb.bldrpushtime);
what = givemesg ? the(xname(otmp)) : 0;
if (!u.usteed) {
easypush = throws_rocks(gy.youmonst.data);
if (givemesg)
pline("With %s effort you move %s.",
easypush ? "little" : "great", what);
if (!easypush)
exercise(A_STR, TRUE);
} else {
if (givemesg)
pline("%s moves %s.", YMonnam(u.usteed), what);
}
gb.bldrpushtime = svm.moves;
}
/* Move the boulder *after* the message. */
if (glyph_is_invisible(levl[rx][ry].glyph))
unmap_object(rx, ry);
otmp->next_boulder = 0;
movobj(otmp, rx, ry); /* does newsym(rx,ry) */
if (Blind) {
feel_location(rx, ry);
feel_location(sx, sy);
} else {
newsym(sx, sy);
}
/* maybe adjust bill if boulder was pushed across shop boundary;
normally otmp->unpaid would not apply because otmp isn't in
hero's inventory, but addtobill() sets it and subfrombill()
clears it */
if (costly && !costly_spot(rx, ry)) {
/* pushing from inside shop to its boundary (or free spot) */
addtobill(otmp, FALSE, FALSE, FALSE);
} else if (!costly && costly_spot(rx, ry) && otmp->unpaid
&& ((shkp = shop_keeper(*in_rooms(rx, ry, SHOPBASE)))
!= 0)
&& onshopbill(otmp, shkp, TRUE)) {
/* this can happen if hero pushes boulder from farther inside
shop into shop's free spot (which will add it to the bill),
then teleports or Passes_walls to doorway (without exiting
the shop), and then pushes the boulder from the free spot
back into the shop; it's contingent upon the shopkeeper not
"muttering an incantation" to fracture the boulder while it
is unpaid at the free spot */
subfrombill(otmp, shkp);
} else if (otmp->unpaid
&& (shkp = find_objowner(otmp, sx, sy)) != 0
&& !strchr(in_rooms(rx, ry, SHOPBASE),
ESHK(shkp)->shoproom)) {
/* once the boulder is fully out of the shop, so that it's
* impossible to change your mind and push it back in without
* leaving and triggering Kops, switch it to stolen_value */
stolen_value(otmp, sx, sy, TRUE, FALSE);
}
}
staticfn void
cannot_push_msg(struct obj *otmp, coordxy sx, coordxy sy)
{
const char *what;
what = the(xname(otmp));
if (u.usteed)
pline("%s tries to move %s, but cannot.",
YMonnam(u.usteed), what);
else
You("try to move %s, but in vain.", what);
if (Blind)
feel_location(sx, sy);
}
staticfn int
cannot_push(struct obj *otmp, coordxy sx, coordxy sy)
{
if (throws_rocks(gy.youmonst.data)) {
boolean
canpickup = (!Sokoban
/* similar exception as in can_lift():
when poly'd into a giant, you can
pick up a boulder if you have a free
slot or into the overflow ('#') slot
unless already carrying at least one */
&& (inv_cnt(FALSE) < invlet_basic
|| !carrying(BOULDER))),
willpickup = (canpickup
&& (flags.pickup && !svc.context.nopick)
&& autopick_testobj(otmp, TRUE));
if (u.usteed && P_SKILL(P_RIDING) < P_BASIC) {
You("aren't skilled enough to %s %s from %s.",
willpickup ? "pick up" : "push aside",
the(xname(otmp)), y_monnam(u.usteed));
} else {
/*
* will pick up: you easily pick it up
* can but won't: you maneuver over it and could pick it up
* can't pick up: you maneuver over it (possibly followed
* by feedback from failed auto-pickup attempt)
*/
pline("However, you %s%s.",
willpickup ? "easily pick it up"
: "maneuver over it",
(canpickup && !willpickup)
? " and could pick it up"
: "");
/* similar to dropping everything and squeezing onto
a Sokoban boulder's spot, moving to same breaks the
Sokoban rules because on next step you could go
past it without pushing it to plug a pit or hole */
sokoban_guilt();
}
return 0;
}
if (could_move_onto_boulder(sx, sy)) {
pline(
"However, you can squeeze yourself into a small opening.");
sokoban_guilt();
return 0;
} else {
return -1;
}
}
staticfn void
rock_disappear_msg(struct obj *otmp)
{
if (u.usteed)
pline("%s pushes %s and suddenly it disappears!",
YMonnam(u.usteed), the(xname(otmp)));
else
You("push %s and suddenly it disappears!",
the(xname(otmp)));
}
staticfn void
moverock_done(coordxy sx, coordxy sy)
{
struct obj *otmp;
for (otmp = svl.level.objects[sx][sy]; otmp; otmp = otmp->nexthere)
if (otmp->otyp == BOULDER)
otmp->next_boulder = 0; /* resume normal xname() for this obj */
}
staticfn int
moverock(void)
{
coordxy sx, sy;
int ret;
sx = u.ux + u.dx, sy = u.uy + u.dy; /* boulder starting position */
ret = moverock_core(sx, sy);
moverock_done(sx, sy);
return ret;
}
staticfn int
moverock_core(coordxy sx, coordxy sy)
{
coordxy rx, ry;
struct obj *otmp;
struct trap *ttmp;
struct monst *mtmp;
boolean costly, firstboulder = TRUE;
while ((otmp = sobj_at(BOULDER, sx, sy)) != 0) {
if (Blind && glyph_to_obj(glyph_at(sx, sy)) != BOULDER) {
pline("That feels like a boulder.");
map_object(otmp, TRUE);
nomul(0);
return -1;
}
/* when otmp->next_boulder is 1, xname() will format it as
"next boulder" instead of just "boulder"; affects
boulder_hits_pool()'s messages as well as messages below */
otmp->next_boulder = firstboulder ? 0 : 1;
/* FIXME? 'firstboulder' should be reset to True if this boulder
isn't the first and the previous one is named differently from
this one. Probably not worth bothering with... */
firstboulder = FALSE;
/* make sure that this boulder is visible as the top object */
if (otmp != svl.level.objects[sx][sy])
movobj(otmp, sx, sy);
rx = u.ux + 2 * u.dx; /* boulder destination position */
ry = u.uy + 2 * u.dy;
nomul(0);
/* using m<dir> towards an adjacent boulder steps over/onto it if
poly'd into a giant or squeezes under/beside it if small/light
enough but is a no-op in other circumstances unless move attempt
reveals an unseen boulder or lack of remembered, unseen monster */
if (svc.context.nopick) {
int oldglyph = glyph_at(sx, sy); /* before feel_location() */
int res;
feel_location(sx, sy); /* same for all 3 if/else-if/else cases */
if (throws_rocks(gy.youmonst.data)) {
/* player has used 'm<dir>' to move, so step to boulder's
spot without pushing it; hero is poly'd into a giant,
so exotic forms of locomotion are out, but might be
levitating (ring, potion, spell) or flying (amulet) */
You("%s over a boulder here.", u_locomotion("step"));
/* ["over" seems weird on air level but what else to say?] */
sokoban_guilt();
res = 0; /* move to <sx,sy> */
} else if (could_move_onto_boulder(sx, sy)) {
You("squeeze yourself %s the boulder.",
Flying ? "over" : "against");
sokoban_guilt();
res = 0; /* move to <sx,sy> */
} else {
There("is a boulder in your way.");
/* use a move if hero learns something; see test_move() for
how/why 'context.door_opened' is being dragged into this */
if (glyph_at(sx, sy) != oldglyph)
svc.context.door_opened = svc.context.move = TRUE;
res = -1; /* don't move to <sx,sy>, so no soko guilt */
}
return res;
}
if (Levitation || Is_airlevel(&u.uz)) {
/* FIXME? behavior in an air bubble on the water level should
be similar to being on the air level; both cases probably
ought to let push attempt proceed when flying (which implies
not levitating) */
if (Blind)
feel_location(sx, sy);
You("don't have enough leverage to push %s.", the(xname(otmp)));
/* Give them a chance to climb over it? */
return -1;
}
if (verysmall(gy.youmonst.data) && !u.usteed) {
if (Blind)
feel_location(sx, sy);
pline("You're too small to push that %s.", xname(otmp));
return cannot_push(otmp, sx, sy);
}
if (isok(rx, ry) && !IS_OBSTRUCTED(levl[rx][ry].typ)
&& levl[rx][ry].typ != IRONBARS
&& (!IS_DOOR(levl[rx][ry].typ) || !(u.dx && u.dy)
|| doorless_door(rx, ry)) && !sobj_at(BOULDER, rx, ry)) {
ttmp = t_at(rx, ry);
mtmp = m_at(rx, ry);
costly = (costly_spot(sx, sy)
&& shop_keeper(*in_rooms(sx, sy, SHOPBASE)));
/* KMH -- Sokoban doesn't let you push boulders diagonally */
if (Sokoban && u.dx && u.dy) {
if (Blind)
feel_location(sx, sy);
pline("%s won't roll diagonally on this %s.",
The(xname(otmp)), surface(sx, sy));
return cannot_push(otmp, sx, sy);
}
if (revive_nasty(rx, ry,
"You sense movement on the other side.")) {
return -1;
}
if (mtmp && !noncorporeal(mtmp->data)
&& (!mtmp->mtrapped || !(ttmp && is_pit(ttmp->ttyp)))) {
boolean deliver_part1 = FALSE;
if (Blind)
feel_location(sx, sy);
if (canspotmon(mtmp)) {
pline("There's %s on the other side.", a_monnam(mtmp));
deliver_part1 = TRUE;
} else {
Soundeffect(se_monster_behind_boulder, 50);
You_hear("a monster behind %s.", the(xname(otmp)));
if (!Deaf)
deliver_part1 = TRUE;
map_invisible(rx, ry);
}
if (flags.verbose) {
char you_or_steed[BUFSZ];
Strcpy(you_or_steed,
u.usteed ? y_monnam(u.usteed) : "you");
pline("%s%s cannot move %s.",
deliver_part1 ? "Perhaps that's why " : "",
deliver_part1 ? you_or_steed
: upstart(you_or_steed),
deliver_part1 ? "it" : the(xname(otmp)));
}
return cannot_push(otmp, sx, sy);
}
if (closed_door(rx, ry)) {
cannot_push_msg(otmp, sx, sy);
return cannot_push(otmp, sx, sy);
}
/* at this point the boulder should be able to move (though
potentially into something like a trap, pool, or lava) */
/* rumbling disturbs buried zombies */
disturb_buried_zombies(sx, sy);
if (ttmp) {
int newlev = 0; /* lint suppression */
d_level dest;
/* if a trap operates on the boulder, don't attempt
to move any others at this location; return -1
if another boulder is in hero's way, or 0 if he
should advance to the vacated boulder position */
switch (ttmp->ttyp) {
case LANDMINE:
if (rn2(10)) {
obj_extract_self(otmp);
place_object(otmp, rx, ry);
newsym(sx, sy);
pline("%s! %s %s land mine.",
/* "kablam" is a variation of "ka-boom" or
"kablooey", rather cartoonish descriptions
of the sound of an explosion, but give it
even when deaf if hero sees the explosion */
(!Deaf || !Blind) ? "KAABLAMM!!"
/* use an alternate exclamation when feeling
the floor/ground/whatever shake (or maybe
a weak shockwave if levitating or flying) */
: "Gadzooks",
Tobjnam(otmp, "trigger"),
ttmp->madeby_u ? "your" : "a");
blow_up_landmine(ttmp);
/* if the boulder remains, it should fill the pit */
fill_pit(u.ux, u.uy);
if (cansee(rx, ry))
newsym(rx, ry);
return sobj_at(BOULDER, sx, sy) ? -1 : 0;
}
break;
case SPIKED_PIT:
case PIT:
obj_extract_self(otmp);
/* vision kludge to get messages right;
the pit will temporarily be seen even
if this is one among multiple boulders */
if (!Blind)
gv.viz_array[ry][rx] |= IN_SIGHT;
if (!flooreffects(otmp, rx, ry, "fall")) {
place_object(otmp, rx, ry);
}
if (mtmp && !Blind)
newsym(rx, ry);
return sobj_at(BOULDER, sx, sy) ? -1 : 0;
case HOLE:
case TRAPDOOR:
Soundeffect(se_kerplunk_boulder_gone, 40);
if (Blind)
pline("Kerplunk! You no longer feel %s.",
the(xname(otmp)));
else
pline("%s%s and %s a %s in the %s!",
Tobjnam(otmp, (ttmp->ttyp == TRAPDOOR)
? "trigger"
: "fall"),
(ttmp->ttyp == TRAPDOOR) ? "" : " into",
otense(otmp, "plug"),
(ttmp->ttyp == TRAPDOOR) ? "trap door" : "hole",
surface(rx, ry));
deltrap(ttmp);
useupf(otmp, 1L);
bury_objs(rx, ry);
levl[rx][ry].wall_info &= ~W_NONDIGGABLE;
levl[rx][ry].candig = 1;
if (cansee(rx, ry))
newsym(rx, ry);
return sobj_at(BOULDER, sx, sy) ? -1 : 0;
case LEVEL_TELEP:
/* 20% chance of picking current level; 100% chance for
that if in single-level branch (Knox) or in endgame */
newlev = random_teleport_level();
/* if trap doesn't work, skip "disappears" message */
if (newlev == depth(&u.uz)) {
dopush(sx, sy, rx, ry, otmp, costly);
continue;
}
FALLTHROUGH;
/*FALLTHRU*/
case TELEP_TRAP:
rock_disappear_msg(otmp);
otmp->next_boulder = 0; /* reset before moving it */
if (ttmp->ttyp == TELEP_TRAP) {
(void) rloco(otmp);
} else {
if (costly)
stolen_value(otmp, rx, ry, !ttmp->tseen, FALSE);
obj_extract_self(otmp);
add_to_migration(otmp);
get_level(&dest, newlev);
otmp->ox = dest.dnum;
otmp->oy = dest.dlevel;
otmp->owornmask = (long) MIGR_RANDOM;
}
seetrap(ttmp);
return sobj_at(BOULDER, sx, sy) ? -1 : 0;
case ROLLING_BOULDER_TRAP:
{
int tox = rx;
int toy = ry;
/* the boulder continues until it reaches one of
the trap's launch spots or hits a wall / out-of-bounds */
while (isok(tox + u.dx, toy + u.dy)) {
tox += u.dx;
toy += u.dy;
if (tox == ttmp->launch.x && toy == ttmp->launch.y)
break;
if (tox == ttmp->launch2.x && toy == ttmp->launch2.y)
break;
}
pline("%s away from you!",
Tobjnam(otmp, "suddenly roll"));
feeltrap(ttmp);
launch_obj(BOULDER, sx, sy, tox, toy, ROLL | LAUNCH_KNOWN);
return sobj_at(BOULDER, sx, sy) ? -1 : 0;
}
default:
break; /* boulder not affected by this trap */
}
}
if (boulder_hits_pool(otmp, rx, ry, TRUE))
continue;
/*
* Re-link at top of fobj chain so that pile order is preserved
* when level is restored.
*/
if (otmp != fobj) {
remove_object(otmp);
place_object(otmp, otmp->ox, otmp->oy);
}
dopush(sx, sy, rx, ry, otmp, costly);
} else {
cannot_push_msg(otmp, sx, sy);
return cannot_push(otmp, sx, sy);
}
}
return 0;
}
/*
* still_chewing()
*
* Chew on a wall, door, or boulder. [What about statues?]
* Returns TRUE if still eating, FALSE when done.
*/
int
still_chewing(coordxy x, coordxy y)
{
struct rm *lev = &levl[x][y];
struct obj *boulder = sobj_at(BOULDER, x, y);
const char *digtxt = (char *) 0, *dmgtxt = (char *) 0;
if (svc.context.digging.down) /* not continuing prev dig (w/ pick-axe) */
(void) memset((genericptr_t) &svc.context.digging, 0,
sizeof (struct dig_info));
if (!boulder
&& ((IS_OBSTRUCTED(lev->typ) && !may_dig(x, y))
/* may_dig() checks W_NONDIGGABLE but doesn't handle iron bars */
|| (lev->typ == IRONBARS && (lev->wall_info & W_NONDIGGABLE)))) {
You("hurt your teeth on the %s.",
(lev->typ == IRONBARS)
? "bars"
: IS_TREE(lev->typ)
? "tree"
: "hard stone");
nomul(0);
return 1;
} else if (lev->typ == IRONBARS
&& metallivorous(gy.youmonst.data) && u.uhunger > 1500) {
/* finishing eating via 'morehungry()' doesn't handle choking */
You("are too full to eat the bars.");
nomul(0);
return 1;
} else if (!svc.context.digging.chew
|| svc.context.digging.pos.x != x
|| svc.context.digging.pos.y != y
|| !on_level(&svc.context.digging.level, &u.uz)) {
svc.context.digging.down = FALSE;
svc.context.digging.chew = TRUE;
svc.context.digging.warned = FALSE;
svc.context.digging.pos.x = x;
svc.context.digging.pos.y = y;
assign_level(&svc.context.digging.level, &u.uz);
/* solid rock takes more work & time to dig through */
svc.context.digging.effort =
(IS_OBSTRUCTED(lev->typ) && !IS_TREE(lev->typ) ? 30 : 60) + u.udaminc;
You("start chewing %s %s.",
(boulder || IS_TREE(lev->typ) || lev->typ == IRONBARS)
? "on a"
: "a hole in the",
boulder
? "boulder"
: IS_TREE(lev->typ)
? "tree"
: IS_OBSTRUCTED(lev->typ)
? "rock"
: (lev->typ == IRONBARS)
? "bar"
: "door");
watch_dig((struct monst *) 0, x, y, FALSE);
return 1;
} else if ((svc.context.digging.effort += (30 + u.udaminc)) <= 100) {
if (flags.verbose)
You("%s chewing on the %s.",
svc.context.digging.chew ? "continue" : "begin",
boulder
? "boulder"
: IS_TREE(lev->typ)
? "tree"
: IS_OBSTRUCTED(lev->typ)
? "rock"
: (lev->typ == IRONBARS)
? "bars"
: "door");
svc.context.digging.chew = TRUE;
watch_dig((struct monst *) 0, x, y, FALSE);
return 1;
}
/* Okay, you've chewed through something */
if (!u.uconduct.food++)
livelog_printf(LL_CONDUCT,
"ate for the first time, by chewing through %s",
boulder ? "a boulder"
: IS_TREE(lev->typ) ? "a tree"
: IS_OBSTRUCTED(lev->typ) ? "rock"
: (lev->typ == IRONBARS) ? "iron bars"
: "a door");
u.uhunger += rnd(20);
if (boulder) {
delobj(boulder); /* boulder goes bye-bye */
You("eat the boulder."); /* yum */
/*
* The location could still block because of
* 1. More than one boulder
* 2. Boulder stuck in a wall/stone/door.
*
* [perhaps use does_block() below (from vision.c)]
*/
if (IS_OBSTRUCTED(lev->typ) || closed_door(x, y)
|| sobj_at(BOULDER, x, y)) {
block_point(x, y); /* delobj will unblock the point */
/* reset dig state */
(void) memset((genericptr_t) &svc.context.digging, 0,
sizeof (struct dig_info));
return 1;
}
} else if (IS_WALL(lev->typ)) {
if (*in_rooms(x, y, SHOPBASE)) {
add_damage(x, y, SHOP_WALL_DMG);
dmgtxt = "damage";
}
digtxt = "chew a hole in the wall.";
if (svl.level.flags.is_maze_lev) {
lev->typ = ROOM;
} else if (svl.level.flags.is_cavernous_lev && !in_town(x, y)) {
lev->typ = CORR;
} else {
lev->typ = DOOR;
lev->doormask = D_NODOOR;
}
} else if (IS_TREE(lev->typ)) {
digtxt = "chew through the tree.";
lev->typ = ROOM;
} else if (lev->typ == IRONBARS) {
if (metallivorous(gy.youmonst.data)) { /* should always be True here */
/* arbitrary amount; unlike proper eating, nutrition is
bestowed in a lump sum at the end */
int nut = (int) objects[HEAVY_IRON_BALL].oc_weight;
/* lesshungry() requires that victual be set up, so skip it;
morehungry() of a negative amount will increase nutrition
without any possibility of choking to death on the meal;
updates hunger state and requests status update if changed */
morehungry(-nut);
}
digtxt = u_at(x, y)
? "devour the iron bars."
: "eat through the bars.";
dissolve_bars(x, y);
} else if (lev->typ == SDOOR) {
if (lev->doormask & D_TRAPPED) {
lev->doormask = D_NODOOR;
b_trapped("secret door", NO_PART);
} else {
digtxt = "chew through the secret door.";
lev->doormask = D_BROKEN;
}
lev->typ = DOOR;
} else if (IS_DOOR(lev->typ)) {
if (*in_rooms(x, y, SHOPBASE)) {
add_damage(x, y, SHOP_DOOR_COST);
dmgtxt = "break";
}
if (lev->doormask & D_TRAPPED) {
lev->doormask = D_NODOOR;
b_trapped("door", NO_PART);
} else {
digtxt = "chew through the door.";
lev->doormask = D_BROKEN;
}
} else { /* STONE or SCORR */
digtxt = "chew a passage through the rock.";
lev->typ = CORR;
}
recalc_block_point(x, y); /* vision */
newsym(x, y);
if (digtxt)
You1(digtxt); /* after newsym */
if (dmgtxt)
pay_for_damage(dmgtxt, FALSE);
(void) memset((genericptr_t) &svc.context.digging, 0,
sizeof (struct dig_info));
return 0;
}
void
movobj(struct obj *obj, coordxy ox, coordxy oy)
{
/* optimize by leaving on the fobj chain? */
remove_object(obj);
maybe_unhide_at(obj->ox, obj->oy);
newsym(obj->ox, obj->oy);
place_object(obj, ox, oy);
newsym(ox, oy);
}
staticfn void
dosinkfall(void)
{
static const char fell_on_sink[] = "fell onto a sink";
struct obj *obj;
int dmg;
boolean lev_boots = (uarmf && uarmf->otyp == LEVITATION_BOOTS),
innate_lev = ((HLevitation & (FROMOUTSIDE | FROMFORM)) != 0L),
/* to handle being chained to buried iron ball, trying to
levitate but being blocked, then moving onto adjacent sink;
no need to worry about being blocked by terrain because we
couldn't be over a sink at the same time */
blockd_lev = (BLevitation == I_SPECIAL),
ufall = (!innate_lev && !blockd_lev
&& !(HFlying || EFlying)); /* BFlying */
if (!ufall) {
You((innate_lev || blockd_lev) ? "wobble unsteadily for a moment."
: "gain control of your flight.");
} else {
long save_ELev = ELevitation, save_HLev = HLevitation;
/* fake removal of levitation in advance so that final
disclosure will be right in case this turns out to
be fatal; fortunately the fact that rings and boots
are really still worn has no effect on bones data */
ELevitation = HLevitation = 0L;
You("crash to the floor!");
dmg = rn1(8, 25 - (int) ACURR(A_CON));
losehp(Maybe_Half_Phys(dmg), fell_on_sink, NO_KILLER_PREFIX);
exercise(A_DEX, FALSE);
selftouch("Falling, you");
for (obj = svl.level.objects[u.ux][u.uy]; obj; obj = obj->nexthere)
if (obj->oclass == WEAPON_CLASS || is_weptool(obj)) {
You("fell on %s.", doname(obj));
losehp(Maybe_Half_Phys(rnd(3)), fell_on_sink,
NO_KILLER_PREFIX);
exercise(A_CON, FALSE);
}
ELevitation = save_ELev;
HLevitation = save_HLev;
}
/*
* Interrupt multi-turn putting on/taking off of armor (in which
* case we reached the sink due to being teleported while busy;
* in 3.4.3, Boots_on()/Boots_off() [called via (*afternmv)() when
* 'multi' reaches 0] triggered a crash if we were donning/doffing
* levitation boots [because the Boots_off() below causes 'uarmf'
* to be null by the time 'afternmv' gets called]).
*
* Interrupt donning/doffing if we fall onto the sink, or if the
* code below is going to remove levitation boots even when we
* haven't fallen (innate floating or flying becoming unblocked).
*/
if (ufall || lev_boots) {
(void) stop_donning(lev_boots ? uarmf : (struct obj *) 0);
/* recalculate in case uarmf just got set to null */
lev_boots = (uarmf && uarmf->otyp == LEVITATION_BOOTS);
}
/* remove worn levitation items */
ELevitation &= ~W_ARTI;
HLevitation &= ~(I_SPECIAL | TIMEOUT);
HLevitation++;
if (uleft && uleft->otyp == RIN_LEVITATION) {
obj = uleft;
Ring_off(obj);
off_msg(obj);
}
if (uright && uright->otyp == RIN_LEVITATION) {
obj = uright;
Ring_off(obj);
off_msg(obj);
}
if (lev_boots) {
obj = uarmf;
(void) Boots_off();
off_msg(obj);
}
HLevitation--;
/* probably moot; we're either still levitating or went
through float_down(), but make sure BFlying is up to date */
float_vs_flight();
}
/* intended to be called only on ROCKs or TREEs */
boolean
may_dig(coordxy x, coordxy y)
{
struct rm *lev = &levl[x][y];
return (boolean) !((IS_STWALL(lev->typ) || IS_TREE(lev->typ))
&& (lev->wall_info & W_NONDIGGABLE));
}
boolean
may_passwall(coordxy x, coordxy y)
{
return (boolean) !(IS_STWALL(levl[x][y].typ)
&& (levl[x][y].wall_info & W_NONPASSWALL));
}
boolean
bad_rock(struct permonst *mdat, coordxy x, coordxy y)
{
return (boolean) ((Sokoban && sobj_at(BOULDER, x, y))
|| (IS_OBSTRUCTED(levl[x][y].typ)
&& (!tunnels(mdat) || needspick(mdat)
|| !may_dig(x, y))
&& !(passes_walls(mdat) && may_passwall(x, y))));
}
/* caller has already decided that it's a tight diagonal; check whether a
monster--who might be the hero--can fit through, and if not then return
the reason why: 1: can't fit, 2: possessions won't fit, 3: sokoban
returns 0 if we can squeeze through */
int
cant_squeeze_thru(struct monst *mon)
{
int amt;
struct permonst *ptr = mon->data;
if ((mon == &gy.youmonst) ? Passes_walls : passes_walls(ptr))
return 0;
/* too big? */
if (bigmonst(ptr)
&& !(amorphous(ptr) || is_whirly(ptr) || noncorporeal(ptr)
|| slithy(ptr) || can_fog(mon)))
return 1;
/* lugging too much junk? */
amt = (mon == &gy.youmonst) ? inv_weight() + weight_cap()
: curr_mon_load(mon);
if (amt > WT_TOOMUCH_DIAGONAL)
return 2;
/* Sokoban restriction applies to hero only */
if (mon == &gy.youmonst && Sokoban)
return 3;
/* can squeeze through */
return 0;
}
boolean
invocation_pos(coordxy x, coordxy y)
{
return (boolean) (Invocation_lev(&u.uz)
&& x == svi.inv_pos.x && y == svi.inv_pos.y);
}
/* return TRUE if (ux+dx,uy+dy) is an OK place to move;
mode is one of DO_MOVE, TEST_MOVE, TEST_TRAV, or TEST_TRAP */
boolean
test_move(
coordxy ux, coordxy uy,
coordxy dx, coordxy dy, /* these are -1|0|+1, not coordinates */
int mode)
{
coordxy x = ux + dx;
coordxy y = uy + dy;
struct rm *tmpr;
struct rm *ust;
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