Press n or j to go to the next uncovered block, b, p or k for the previous block.
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// C ref: trap.c — 7186 lines
//
// Key RNG consumers:
// dotrap() — rn2(5) escape check, then trap-specific RNG
// mintrap() — rn2(40) escape, per-type monster dispatch
// domagictrap() — rnd(20) fate dispatch with 20 cases
// trapeffect_pit() — rn1(6,2) for duration, rnd for damage
// trapeffect_bear_trap() — rn1(4,4) for duration, d(2,4) damage
// trapeffect_magic_trap() — rn2(30) explosion check
// trapeffect_landmine() — rnd(16) damage, rn1(35,41) leg wounds
// trapeffect_anti_magic() — d(2,6) drain, rnd(drain/2) split
import { game } from './gstate.js';
import { trap_to_glyph } from './glyph.js';
import { destroy_items, erosion_matters, ignite_items, melt_ice } from './mkobj.js';
import { rn2, rnd, rn1, c_d, rnl, pushRngLogEntry } from './rng.js';
import { pline, pline_mon, pline_The, urgent_pline, You, You_feel, You_hear, You_see, Your } from './pline.js';
import { Acid_resistance, Antimagic, Blind, Cold_resistance, Deaf, Drain_resistance, Fire_resistance, Flying, Fumbling, Half_physical_damage, Half_spell_damage, Hallucination, has_ceiling, HStun, In_endgame, In_quest, Inhell, Invis, Is_airlevel, Is_waterlevel, Levitation, Maybe_Half_Phys, Passes_walls, Poison_resistance, Punished, Role_if, See_invisible, Shock_resistance, Sleep_resistance, Stone_resistance, Stunned, u_locomotion, Unchanging, Underwater, Upolyd } from './macros.js';
import { getdir, nomul } from './cmd.js';
import { levl, t_at, m_at } from './map_access.js';
import { canseemon, canspotmon, map_invisible, map_trap, newsym, seemimic, setBotl, shieldeff, unblock_point } from './display.js';
import { pchar_sym } from './drawing.js';
import { defsyms, S_arrow_trap } from './symbols.js';
import { burn_away_slime, can_reach_floor, crawl_destination, done, helpless, losehp, monkilled, spoteffects } from './hack.js';
import { stumble_onto_mimic } from './uhitm.js';
import { dmgval } from './weapon.js';
import { AD_ACID, AD_ELEC, AD_FIRE, AD_MAGM, AD_PHYS, AD_RBRE, AD_RUST, AD_SLEE, mons, MZ_HUGE, MZ_SMALL, PM_BALROG, PM_BALUCHITHERIUM, PM_BUGBEAR, PM_CYCLOPS, PM_FLESH_GOLEM, PM_FOG_CLOUD, PM_GELATINOUS_CUBE, PM_GREMLIN, PM_IRON_GOLEM, PM_JABBERWOCK, PM_KRAKEN, PM_LEATHER_GOLEM, PM_LORD_SURTUR, PM_MASTODON, PM_NORN, PM_ORION, PM_OWLBEAR, PM_PAPER_GOLEM, PM_PIT_FIEND, PM_PIT_VIPER, PM_PURPLE_WORM, PM_RANGER, PM_ROGUE, PM_STEAM_VORTEX, PM_STRAW_GOLEM, PM_TITANOTHERE, PM_WATER_ELEMENTAL, PM_WOOD_GOLEM, S_DRAGON, S_GIANT, S_SPIDER } from './monsters.js';
import { A_CHA, A_CON, A_DEX, A_STR, A_WIS, ANTI_MAGIC, ARM, ARROW_TRAP, BEAR_TRAP, BOLT_LIM, CORPSTAT_NONE, COST_BURN, COST_CORRODE, COST_CRACK, COST_ROT, COST_RUST, D_CLOSED, D_LOCKED, D_NODOOR, D_TRAPPED, DART_TRAP, DOOR, DRAWBRIDGE_UP, ECMD_OK, FINGER, FIRE_TRAP, FLYING, FOOT, HAND, HEAD, HOLE, HVY_ENCUMBER, I_SPECIAL, IS_AIR, IS_DOOR, IS_FURNITURE, is_hole, is_pit, is_xport, isok, Is_botlevel, Is_stronghold, KILLED_BY, KILLED_BY_AN, LADDER, LANDMINE, LAVAPOOL, LEG, LEVEL_TELEP, LEFT_SIDE, LEVITATION, M_AP_FURNITURE, M_AP_OBJECT, M_AP_TYPE, MAGIC_PORTAL, MAGIC_TRAP, MAXULEV, MIGR_PORTAL, MIGR_RANDOM, MM_NOCOUNTBIRTH, MM_NOMSG, MOAT, N_DIRS, NO_KILLER_PREFIX, NO_MINVENT, NO_MM_FLAGS, NON_PM, NOTELL, OBJ_MINVENT, PIT, POLY_TRAP, POOL, RIGHT_SIDE, ROCKTRAP, ROLLING_BOULDER_TRAP, RUST_TRAP, SHOPBASE, SLP_GAS_TRAP, SPIKED_PIT, SPINE, SQKY_BOARD, STAIRS, STATUE_TRAP, STONING, TELEP_TRAP, TIMEOUT, TRAPDOOR, TRAPPED_CHEST, TRAPPED_DOOR, TT_BEARTRAP, TT_BURIEDBALL, TT_INFLOOR, TT_LAVA, TT_NONE, TT_PIT, TT_WEB, u_at, Is_knox_level, UTOTYPE_ATSTAIRS, UTOTYPE_FALLING, UTOTYPE_NONE, UTOTYPE_PORTAL, VIBRATING_SQUARE, WATER, WEB, W_ARM, W_ARMC, W_ARMF, W_ARMG, W_ARMH, W_ARMS, W_ARMU, xdir, ydir, ZAP_POS } from './const.js';
import { cansee, couldsee } from './vision.js';
import { mksobj } from './mkobj.js';
import { level_difficulty, makemon, goodpos } from './makemon.js';
import { exercise, adjattrib, ACURR, poisoned } from './attrib.js';
import { hliquid } from './do_name.js';
import { Norep, schedule_goto, set_wounded_legs } from './do.js';
import { rloc, rloc_to, rloc_to_core, tele, level_tele, vault_tele, teleds, noteleport_level } from './teleport.js';
import { RLOC_MSG, TELEDS_ALLOW_DRAG, TELEDS_TELEPORT } from './const.js';
import { polyself, body_part, float_vs_flight } from './polyself.js';
import { acidic, amorphous, breathless, completelyrusts, control_teleport, flaming, grounded, is_animal, is_clinger, is_floater, is_flyer, is_mindless as mindless, is_unicorn, is_vampshifter, is_whirly, mdistu, mon_knows_traps, mon_learns_traps, monsndx, nohands, nonliving, passes_rocks, passes_walls, resists_blnd, resists_fire, resists_magm, resists_sleep, sticks as sticks_fn, strongmonst, throws_rocks, webmaker } from './mondata.js';
import { encumber_msg, near_capacity, pickup } from './pickup.js';
import { burn_floor_objects, resist } from './zap.js';
import { Can_fall_thru, is_ice } from './dbridge.js';
import { buried_ball_to_punishment, ceiling } from './dig.js';
import { migrate_to_level, tamedog } from './dog.js';
import { make_blinded, make_hallucinated, make_stunned, self_invis_message } from './potion.js';
import { a_monnam, DEADMONSTER, mon_nam, mongone, Monnam, newcham, setmangry, stop_occupation, update_inventory, wake_nearby, wake_nearto, m_in_air } from './mon.js';
import { ARROW, BOULDER, CAN_OF_GREASE, CHEST, DART, ICE_BOX, IRON_SHOES, Is_container, is_corrodeable, is_crackable, is_flammable, is_rottable, is_rustprone, LARGE_BOX, OILSKIN_SACK, POT_ACID, POT_WATER, POTION_CLASS, ROCK, SCR_BLANK_PAPER, SCROLL_CLASS, SPBOOK_CLASS, SPE_BLANK_PAPER, SPE_BOOK_OF_THE_DEAD, STATUE, stone_missile, TOWEL, WAND_CLASS } from './objects.js';
import { bimanual as bimanual_fn, depth, on_level, s_suffix, surface, unsolid } from './hacklib.js';
import { welded as welded_fn } from './wield.js';
import { sobj_at, place_object, obj_extract_self, obfree, dealloc_obj, mkcorpstat, rndmonnum_adj, add_to_container } from './mkobj.js';
import { nxtobj, stackobj, delobj, observe_object } from './invent.js';
import { artilist, ART_MASTER_KEY_OF_THIEVERY } from './artifacts.js';
import { enexto } from './makemon.js';
import { weight } from './mkobj.js';
import { which_armor, find_mac } from './worn.js';
import { carried } from './invent.js';
import { catch_lit, next_to_u, splash_lit } from './apply.js';
// observe_object: moved to invent.js import below
import { rndcolor, rndmonnam } from './do_name.js';
import { sleep_monst } from './mhitm.js';
import { cxname, doname, makeplural, the, vtense, xname } from './objnam.js';
import { ohitmon, thitu } from './mthrowu.js';
import { mpickobj, remove_worn_item } from './steal.js';
import { add_damage, costly_alteration, in_rooms } from './shk.js';
import { extract_from_minvent } from './worn.js';
import { more_experienced, newexplevel } from './exper.js';
import { ynFunction, ynq } from './input.js';
import { Sokoban } from './mklev.js';
import { fall_asleep } from './timeout.js';
import { assign_level, dunlevs_in_dungeon, get_level, ledger_no } from './dungeon.js';
import { mon_has_amulet } from './wizard.js';
// ── Trap flags ──
const FORCETRAP = 0x01;
const NOWEBMSG = 0x02;
const FORCEBUNGLE = 0x04;
const RECURSIVETRAP = 0x08;
const TOOKPLUNGE = 0x10;
const VIASITTING = 0x20;
const FAILEDUNTRAP = 0x40;
const NO_TRAP_FLAGS = 0;
// Trap_Effect return codes (C: enum in trap.h)
const Trap_Effect_Finished = 0;
const Trap_Killed_Mon = 1;
const Trap_Caught_Mon = 2;
const Trap_Is_Gone = 3;
const Trap_Moved_Mon = 4;
// Erosion types (C: erode.h)
const ERODE_BURN = 0;
const ERODE_RUST = 1;
const ERODE_ROT = 2;
const ERODE_CORRODE = 3;
const ERODE_CRACK = 4;
// Erosion flags
const EF_NONE = 0;
const EF_GREASE = 0x01;
const EF_DESTROY = 0x02;
const EF_VERBOSE = 0x04;
const EF_PAY = 0x08;
// Erosion results
const ER_NOTHING = 0;
const ER_GREASED = 1;
const ER_DAMAGED = 2;
const ER_DESTROYED = 3;
const MAX_ERODE = 3;
// ── Local stubs for functions not yet ported elsewhere ──
// These return safe defaults and consume no RNG.
// Sokoban: imported from mklev.js
// ceiling: imported from dig.js
// webmaker: imported from mondata.js
// flaming: imported from mondata.js
// acidic imported from mondata.js
// grounded: imported from mondata.js
// mindless: imported from mondata.js as is_mindless
function metallivorous(ptr) { return !!(ptr?.mflags1 & 0x80000000); } // M1_METALLIVORE
// map_trap: imported from display.js
// C ref: trap.c:910 activate_statue_trap — animates a statue via statue trap
export async function activate_statue_trap(trap, x, y, shatter) {
const otmp = sobj_at(STATUE, x, y);
if (!otmp) return null;
deltrap(trap);
// C: animate_statue — simplified port
const mnum = otmp.corpsenm ?? NON_PM;
if (mnum < 0 || mnum >= mons.length) return null;
const mptr = mons[mnum];
if (!mptr) return null;
// Create the monster
const mon = await makemon(mptr, x, y, NO_MINVENT | MM_NOMSG);
if (!mon) return null;
// Statue trap always hostile
if (!shatter) {
mon.mtame = 0;
mon.mpeaceful = 0;
}
mon.msleeping = 0;
mon.mundetected = false;
if (M_AP_TYPE(mon)) seemimic(mon);
// Messages
const comes_to_life = !canspotmon(mon) ? 'disappears'
: (nonliving(mon.data) || is_vampshifter(mon)) ? 'moves'
: 'comes to life';
if (u_at(x, y)) {
await pline('The statue ' + comes_to_life + '!');
} else if (Hallucination()) {
await pline_The(rndmonnam() + ' suddenly seems more animated.');
} else if (shatter) {
await pline('Instead of shattering, the statue suddenly ' + comes_to_life + '!');
} else {
await You('find ' + (canspotmon(mon) ? a_monnam(mon) : 'something') + ' posing as a statue.');
if (!canspotmon(mon) && Blind()) map_invisible(x, y);
await stop_occupation();
}
// Transfer statue contents to monster inventory
while (otmp.cobj) {
const item = otmp.cobj;
obj_extract_self(item);
await mpickobj(mon, item);
}
delobj(otmp);
return mon;
}
// enexto: imported from makemon.js
// rloc_to: imported from teleport.js
function In_tutorial(uz) {
return Number.isInteger(game.tutorial_dnum) && uz?.dnum === game.tutorial_dnum;
}
// C ref: teleport.c:1492 tele_trap — handle hero stepping on teleport trap
async function tele_trap(trap) {
const u = game.u;
if (In_endgame() || Antimagic() || noteleport_level(game.youmonst)) {
if (Antimagic()) shieldeff(u.ux, u.uy);
await You_feel('a wrenching sensation.');
} else if (!await next_to_u()) {
await You('shudder for a moment.');
} else if (trap.once) {
deltrap(trap);
newsym(u.ux, u.uy);
await vault_tele();
} else if (isok(trap.launch?.x, trap.launch?.y)) {
// Fixed-destination teleport trap
const mtmp = m_at(trap.launch.x, trap.launch.y);
if (mtmp) {
// Try to move the monster out of the way
const cc = {};
if (!enexto(cc, mtmp.mx, mtmp.my, mtmp.data)) {
await You('shudder for a moment.');
} else {
await rloc_to(mtmp, cc.x, cc.y);
await teleds(trap.launch.x, trap.launch.y, TELEDS_TELEPORT);
}
} else {
await teleds(trap.launch.x, trap.launch.y, TELEDS_TELEPORT);
}
} else {
await tele();
}
}
async function level_tele_trap(_trap, _trflags) { await level_tele(); } // simplified
// C ref: teleport.c:1962 mtele_trap — monster teleported by trap
async function mtele_trap(mtmp, trap, in_sight) {
if (noteleport_level(mtmp)) return;
// C ref: teleport.c:786 teleport_pet — check constraints
if (mtmp === game.u?.usteed) return;
if (mtmp.mleashed) {
// C: cursed leash prevents teleport, uncursed unleashes
// Simplified: leashed monsters don't teleport from traps
return;
}
// Monster teleports
if (trap.once) {
// vault trap — mvault_tele simplified to rloc
await rloc(mtmp, 0);
} else if (isok(trap.launch?.x, trap.launch?.y)) {
// Fixed-destination teleport trap
if (!m_at(trap.launch.x, trap.launch.y)
&& !(game.u?.ux === trap.launch.x && game.u?.uy === trap.launch.y)) {
await rloc_to_core(mtmp, trap.launch.x, trap.launch.y, RLOC_MSG);
}
} else {
await rloc(mtmp, 0);
}
if (in_sight) {
if (canseemon(mtmp))
await pline(`${Monnam(mtmp)} seems disoriented.`);
else
await pline(`${Monnam(mtmp)} suddenly disappears!`);
}
}
function random_teleport_level_local() {
const cur_depth = depth(game.u?.uz);
if (!rn2(5) || Is_knox_level(game.u?.uz) || In_endgame(game.u?.uz))
return cur_depth;
let min_depth, max_depth;
if (In_quest(game.u?.uz)) {
min_depth = game.dungeons?.[game.u.uz.dnum]?.depth_start || 1;
max_depth = dunlevs_in_dungeon(game.u?.uz)
+ (game.dungeons?.[game.u.uz.dnum]?.depth_start || 1) - 1;
} else {
min_depth = 1;
max_depth = dunlevs_in_dungeon(game.u?.uz)
+ (game.dungeons?.[game.u.uz.dnum]?.depth_start || 1) - 1;
if (Inhell() && !game.u?.uevent?.invoked)
max_depth -= 1;
}
let nlev = rn2(cur_depth + 3 - min_depth) + min_depth;
if (nlev >= cur_depth) nlev++;
if (nlev > max_depth) nlev = max_depth;
if (nlev < min_depth) nlev = min_depth;
return nlev;
}
async function mlevel_tele_trap(mtmp, trap, force_it, in_sight) {
const tt = trap ? trap.ttyp : LEVEL_TELEP;
if (mtmp === game.u?.ustuck) return Trap_Effect_Finished;
if (mtmp === game.u?.usteed) return Trap_Effect_Finished;
if (mtmp.mleashed && !force_it) return Trap_Effect_Finished;
const tolevel = {};
let migrate_typ = MIGR_RANDOM;
if (is_hole(tt)) {
if (Is_stronghold(game.u?.uz) && game.valley_level) {
assign_level(tolevel, game.valley_level);
} else if (Is_botlevel(game.u?.uz)) {
if (in_sight && trap?.tseen) {
await pline_mon(mtmp, `${Monnam(mtmp)} avoids the ${tt === HOLE ? 'hole' : 'trap'}.`);
}
return Trap_Effect_Finished;
} else {
assign_level(tolevel, trap?.dst || game.u?.uz);
clamp_hole_destination(tolevel);
}
} else if (tt === MAGIC_PORTAL) {
if (In_endgame(game.u?.uz) && (mon_has_amulet(mtmp) || rn2(7))) {
if (in_sight) {
await pline_mon(mtmp, `${Monnam(mtmp)} seems to shimmer for a moment.`);
if (trap) seetrap(trap);
}
return Trap_Effect_Finished;
}
assign_level(tolevel, trap?.dst || game.u?.uz);
migrate_typ = MIGR_PORTAL;
} else if (tt === LEVEL_TELEP) {
if (mon_has_amulet(mtmp) || In_endgame(game.u?.uz)) {
if (in_sight)
await pline_mon(mtmp, `${Monnam(mtmp)} seems very disoriented for a moment.`);
return Trap_Effect_Finished;
}
const nlev = random_teleport_level_local();
if (nlev === depth(game.u?.uz)) {
if (in_sight)
await pline_mon(mtmp, `${Monnam(mtmp)} shudders for a moment.`);
return Trap_Effect_Finished;
}
get_level(tolevel, nlev);
} else {
return Trap_Effect_Finished;
}
if (in_sight) {
await pline_mon(mtmp, `Suddenly, ${mon_nam(mtmp)} ${tt === HOLE
? 'falls into a hole'
: (tt === TRAPDOOR ? 'falls through a trap door' : 'disappears out of sight')}.`);
if (trap) seetrap(trap);
}
if (is_xport(tt) && !control_teleport(mtmp.data))
mtmp.mconf = 1;
await migrate_to_level(mtmp, ledger_no(tolevel), migrate_typ, null);
return Trap_Moved_Mon;
}
async function domagicportal(trap) {
const u = game.u;
let stunmsg = null;
if (u.utrap && u.utraptype === TT_BURIEDBALL)
await buried_ball_to_punishment();
if (!await next_to_u()) {
await You('shudder for a moment.');
return;
}
if (!on_level(u.uz, u.uz0)) {
return;
}
await You('activated a magic portal!');
if (In_endgame(u.uz) && !u.uhave?.amulet) {
await You_feel('dizzy for a moment, but nothing happens...');
return;
}
const target_level = { ...(trap?.dst || {}) };
let totype;
if (In_tutorial(u.uz) && !In_tutorial(target_level)) {
totype = UTOTYPE_ATSTAIRS;
stunmsg = 'Resuming regular play.';
} else {
totype = UTOTYPE_PORTAL;
stunmsg = !Stunned() ? 'You feel slightly dizzy.' : 'You feel dizzier.';
await make_stunned((HStun() & TIMEOUT) + 3, false);
}
schedule_goto(target_level, totype, stunmsg, null);
}
function steedintrap(_trap, _otmp) { return 0; } // no steed support yet
// destroy_items: imported from mkobj.js
// ignite_items: imported from mkobj.js
// melt_ice: imported from mkobj.js
// erosion_matters: imported from mkobj.js
// simplified
// simplified
function clear_nhwindow(_win) { /* TODO */ }
// Can_fall_thru: imported from dbridge.js
// assign_level: imported from dungeon.js
function clamp_hole_destination(dlev) { return dlev; }
// u_locomotion: imported from macros.js
// simplified
// simplified
// simplified
// simplified
// simplified
// stone_missile imported from objects.js
// passes_rocks imported from mondata.js
const ROLL = 0x01;
const LAUNCH_UNSEEN = 0x40;
const LAUNCH_KNOWN = 0x80;
// S_SPIDER, S_GIANT, S_DRAGON: imported from monsters.js
// MZ_SMALL, MZ_HUGE: imported from monsters.js
// AD_FIRE, AD_ACID, AD_PHYS, AD_RBRE, AD_ELEC, AD_RUST, AD_SLEE, AD_MAGM:
// imported from monsters.js
// TT_LAVA, TT_INFLOOR, TT_BURIEDBALL imported from const.js
const ANIMATE_NORMAL = 0;
const ANIMATE_SHATTER = 1;
const ANIMATE_SPELL = 2;
const AS_OK = 0;
const AS_NO_MON = 1;
const AS_MON_IS_UNIQUE = 2;
// ============================================================================
// erode_obj — Generic erode-item function
// C ref: trap.c:172
// RNG: rnl(4) for blessed protection
// ============================================================================
export async function erode_obj(otmp, ostr, type, ef_flags) {
const action = ['smoulder', 'rust', 'rot', 'corrode', 'crack'];
const msg = ['burnt', 'rusted', 'rotten', 'corroded', 'cracked'];
const bythe = ['heat', 'oxidation', 'decay', 'corrosion', 'impact'];
let vulnerable = false, is_primary = true;
let check_grease = !!(ef_flags & EF_GREASE);
const print = !!(ef_flags & EF_VERBOSE);
if (!otmp) return ER_NOTHING;
const uvictim = carried(otmp);
// simplified: no vismon/visobj checks
switch (type) {
case ERODE_BURN:
vulnerable = is_flammable(otmp);
check_grease = false;
break;
case ERODE_RUST:
vulnerable = is_rustprone(otmp);
break;
case ERODE_ROT:
vulnerable = is_rottable(otmp);
check_grease = false;
is_primary = false;
break;
case ERODE_CORRODE:
vulnerable = is_corrodeable(otmp);
is_primary = false;
break;
case ERODE_CRACK:
vulnerable = is_crackable(otmp);
is_primary = true;
break;
default:
return ER_NOTHING;
}
const erosion = is_primary ? (otmp.oeroded || 0) : (otmp.oeroded2 || 0);
if (!ostr) ostr = cxname(otmp);
if (check_grease && otmp.greased) {
await grease_protect(otmp, ostr, uvictim ? game.u : null);
return ER_GREASED;
} else if (!erosion_matters(otmp)) {
return ER_NOTHING;
} else if (!vulnerable || (otmp.oerodeproof && otmp.rknown)) {
if (print && uvictim)
await pline(`Your ${ostr} ${vtense(ostr, 'are')} not affected by ${bythe[type]}.`);
return ER_NOTHING;
} else if (otmp.oerodeproof || (otmp.blessed && !rnl(4))) {
if ((print || otmp.oerodeproof) && uvictim)
await pline(`Somehow, your ${ostr} ${vtense(ostr, 'are')} not affected by the ${bythe[type]}.`);
if (otmp.oerodeproof) {
otmp.rknown = true;
if (uvictim) update_inventory();
}
return ER_NOTHING;
} else if (erosion < MAX_ERODE) {
const adverb = (erosion + 1 === MAX_ERODE) ? ' completely'
: erosion ? ' further' : '';
if (uvictim)
await pline(`Your ${ostr} ${vtense(ostr, action[type])}${adverb}!`);
if (is_primary)
otmp.oeroded = (otmp.oeroded || 0) + 1;
else
otmp.oeroded2 = (otmp.oeroded2 || 0) + 1;
if (uvictim) update_inventory();
return ER_DAMAGED;
} else if (ef_flags & EF_DESTROY) {
if (uvictim)
await pline(`Your ${ostr} ${vtense(ostr, action[type])} away!`);
delobj(otmp);
return ER_DESTROYED;
} else {
if (print && uvictim)
await pline(`Your ${ostr} ${vtense(ostr, Blind() ? 'feel' : 'look')} completely ${msg[type]}.`);
return ER_NOTHING;
}
}
// ── grease_protect — Protect an item from erosion with grease ──
// C ref: trap.c:361
// RNG: rn2(2) grease dissolution
export async function grease_protect(otmp, ostr, victim) {
const txt = 'protected by the layer of grease!';
const uvictim = victim === game.u;
if (ostr) {
if (uvictim)
await pline(`Your ${ostr} ${vtense(ostr, 'are')} ${txt}`);
}
if (!rn2(2)) {
otmp.greased = 0;
if (carried(otmp)) {
await pline_The('grease dissolves.');
update_inventory();
}
return true;
}
return false;
}
// ── burnarmor — fire damages armor ──
// C ref: trap.c:89
// RNG: rn2(oldspe+1) for towel, rn2(5) body part selection
export async function burnarmor(victim) {
if (!victim) return false;
const hitting_u = (victim === game.youmonst || victim === game.u);
// towel drying — simplified (no towel tracking yet)
const burn_dmg = async (obj, descr) => await erode_obj(obj, descr, ERODE_BURN, EF_GREASE);
while (true) {
switch (rn2(5)) {
case 0: {
const item = hitting_u ? game.u?.uarmh : which_armor(victim, W_ARMH);
if (!await burn_dmg(item, 'helmet')) continue;
break;
}
case 1: {
let item = hitting_u ? game.u?.uarmc : which_armor(victim, W_ARMC);
if (item) { await burn_dmg(item, 'cloak'); return true; }
item = hitting_u ? game.u?.uarm : which_armor(victim, W_ARM);
if (item) { await burn_dmg(item, xname(item)); return true; }
item = hitting_u ? game.u?.uarmu : which_armor(victim, W_ARMU);
if (item) await burn_dmg(item, 'shirt');
return true;
}
case 2: {
const item = hitting_u ? game.u?.uarms : which_armor(victim, W_ARMS);
if (!await burn_dmg(item, 'wooden shield')) continue;
break;
}
case 3: {
const item = hitting_u ? game.u?.uarmg : which_armor(victim, W_ARMG);
if (!await burn_dmg(item, 'gloves')) continue;
break;
}
case 4: {
const item = hitting_u ? game.u?.uarmf : which_armor(victim, W_ARMF);
if (!await burn_dmg(item, 'boots')) continue;
break;
}
}
break;
}
return false;
}
// ── wearing_iron_shoes — check if monster wears iron shoes ──
// C ref: trap.c:1099
function wearing_iron_shoes(mtmp) {
if (!mtmp) return false;
const armf = which_armor(mtmp, W_ARMF);
return armf && armf.otyp === IRON_SHOES;
}
// ── mu_maybe_destroy_web — monster or hero may destroy a web ──
// C ref: trap.c:973
async function mu_maybe_destroy_web(mtmp, domsg, trap) {
const isyou = (mtmp === game.u);
const mptr = mtmp?.data;
if (!mptr) return false;
if (amorphous(mptr) || is_whirly(mptr) || flaming(mptr)
|| unsolid(mptr) || monsndx(mptr) === PM_GELATINOUS_CUBE) {
const x = trap.tx;
const y = trap.ty;
if (flaming(mptr) || acidic(mptr)) {
if (domsg) {
if (isyou)
await pline(`You ${flaming(mptr) ? 'burn' : 'dissolve'} ${trap.madeby_u ? 'your' : 'a'} spider web!`);
else
await pline(`${Monnam(mtmp)} ${flaming(mptr) ? 'burns' : 'dissolves'} ${trap.madeby_u ? 'your' : 'a'} spider web!`);
}
deltrap(trap);
newsym(x, y);
return true;
}
if (domsg) {
if (isyou)
await pline(`You flow through ${trap.madeby_u ? 'your' : 'a'} spider web.`);
else
await pline(`${Monnam(mtmp)} flows through ${trap.madeby_u ? 'your' : 'a'} spider web.`);
}
return true;
}
return false;
}
// ── m_harmless_trap — is trap harmless to monster? ──
// C ref: trap.c:1107
export function m_harmless_trap(mtmp, ttmp) {
const mdat = mtmp?.data;
if (!mdat || !ttmp) return false;
if (!Sokoban() && floor_trigger(ttmp.ttyp) && check_in_air_mon(mtmp, 0))
return true;
switch (ttmp.ttyp) {
case BEAR_TRAP:
if (mdat.msize <= MZ_SMALL || amorphous(mdat) || is_whirly(mdat) || unsolid(mdat))
return true;
break;
case SLP_GAS_TRAP:
if (resists_sleep(mtmp))
return true;
break;
case RUST_TRAP:
if (monsndx(mdat) !== PM_IRON_GOLEM)
return true;
break;
case FIRE_TRAP:
if (resists_fire(mtmp))
return true;
break;
case PIT:
case SPIKED_PIT:
case HOLE:
case TRAPDOOR:
if (is_clinger(mdat) && !Sokoban())
return true;
break;
case WEB:
if (amorphous(mdat) || webmaker(mdat) || is_whirly(mdat) || unsolid(mdat))
return true;
break;
case STATUE_TRAP:
return true;
case MAGIC_TRAP:
return true;
case ANTI_MAGIC:
if (resists_magm(mtmp))
return true;
break;
case VIBRATING_SQUARE:
return true;
default:
break;
}
return false;
}
// ── thitm — trap missile hits a monster ──
// C ref: trap.c:6689
// RNG: rnd(20) for hit check, dmgval for damage
async function thitm(tlev, mon, obj, d_override, nocorpse) {
let strike;
let trapkilled = false;
if (d_override)
strike = 1;
else if (obj)
strike = (find_mac(mon) + tlev + (obj.spe || 0) <= rnd(20));
else
strike = (find_mac(mon) + tlev <= rnd(20));
if (!strike) {
if (obj && cansee(mon.mx, mon.my))
await pline(`${Monnam(mon)} is almost hit by ${doname(obj)}!`);
} else {
let dam = 1;
const harmless = obj && stone_missile(obj) && passes_rocks(mon.data);
if (obj && cansee(mon.mx, mon.my))
await pline(`${Monnam(mon)} is hit by ${doname(obj)}${harmless ? ' but is not harmed.' : '!'}`);
if (d_override) {
dam = d_override;
} else if (obj) {
dam = dmgval(obj, mon);
if (dam < 1) dam = 1;
}
if (!harmless) {
mon.mhp -= dam;
if (mon.mhp <= 0) {
const xx = mon.mx, yy = mon.my;
await monkilled(mon, '', nocorpse ? -AD_RBRE : AD_PHYS);
if (mon.mhp <= 0) {
newsym(xx, yy);
trapkilled = true;
}
}
} else {
strike = 0;
}
}
if (obj && (!strike || d_override)) {
place_object(obj, mon.mx, mon.my);
stackobj(obj);
} else if (obj) {
dealloc_obj(obj);
}
return trapkilled;
}
// ── fill_pit — a boulder fills a pit or hole at x,y ──
// C ref: trap.c:3988
export function fill_pit(x, y) {
const t = t_at(x, y);
if (t && (is_pit(t.ttyp) || is_hole(t.ttyp))) {
const otmp = sobj_at(BOULDER, x, y);
if (otmp) {
obj_extract_self(otmp);
// C: flooreffects(otmp, x, y, "settle") — simplified
place_object(otmp, x, y);
}
}
}
// ── blow_up_landmine — landmine explosion effects ──
// C ref: trap.c:3169
export function blow_up_landmine(trap) {
const x = trap.tx, y = trap.ty;
// C: scatter, del_engr_at, drawbridge destruction — simplified
wake_nearto(x, y, 400);
const loc = levl(x, y);
if (loc && loc.typ === DOOR)
loc.doormask = 8; // D_BROKEN
// convert landmine into pit
const t = t_at(x, y);
if (t) {
t.ttyp = PIT;
t.madeby_u = false;
seetrap(t);
}
fill_pit(x, y);
}
// ── launch_obj — Move obj from (x1,y1) to (x2,y2) ──
// C ref: trap.c:3257
// RNG: rn2(3) for boulder snatch, rn2(10) landmine trigger,
// rn2(20) iron bars, various other checks
export async function launch_obj(otyp, x1, y1, x2, y2, style) {
let otmp = sobj_at(otyp, x1, y1);
let otherside = false;
// Try the other side too for rolling boulder traps
if (!otmp && otyp === BOULDER) {
otherside = true;
otmp = sobj_at(otyp, x2, y2);
}
if (!otmp) return 0;
if (otherside) {
const tx = x1, ty = y1;
x1 = x2; y1 = y2;
x2 = tx; y2 = ty;
}
// Extract the single object
let singleobj;
if ((otmp.quan || 1) === 1) {
obj_extract_self(otmp);
singleobj = otmp;
otmp = null;
} else {
// splitobj — simplified
singleobj = { ...otmp, quan: 1 };
otmp.quan = (otmp.quan || 1) - 1;
}
newsym(x1, y1);
let dist = Math.max(Math.abs(x2 - x1), Math.abs(y2 - y1));
let x = x1, y = y1;
const dx = Math.sign(x2 - x1);
const dy = Math.sign(y2 - y1);
let used_up = false;
if (style & LAUNCH_KNOWN) {
singleobj.otrapped = 1;
}
// Set the object in motion
// C ref: trap.c:3360-3361 — initialize bhitpos to starting position
if (!game.bhitpos) game.bhitpos = { x: 0, y: 0 };
game.bhitpos.x = x;
game.bhitpos.y = y;
while (dist-- > 0 && !used_up) {
// C ref: trap.c:3372-3373 — update bhitpos as object moves
x = (game.bhitpos.x += dx);
y = (game.bhitpos.y += dy);
// Check for monster
const mtmp = m_at(x, y);
if (mtmp) {
// C ref: trap.c:3376 — throws_rocks monsters snatch boulders
if (otyp === BOULDER && throws_rocks(mtmp.data)) {
if (rn2(3)) {
if (cansee(x, y))
await pline(`${Monnam(mtmp)} snatches the boulder.`);
singleobj.otrapped = 0;
await mpickobj(mtmp, singleobj);
used_up = true;
break;
}
}
// C ref: trap.c:3388 — real ohitmon for launched projectile
if (await ohitmon(mtmp, singleobj, (style & ROLL) ? -1 : dist, false)) {
used_up = true;
break;
}
}
// Check for hero
if (x === game.u?.ux && y === game.u?.uy) {
if (game.multi) nomul(0);
// C ref: trap.c:3400 — thitu check, stop_occupation if hit
if (await thitu(9 + (singleobj.spe || 0), dmgval(singleobj, game.youmonst),
{ obj: singleobj }, null)) {
await stop_occupation();
}
}
// Check for traps
if (style === ROLL || (style & ROLL)) {
const t = t_at(x, y);
if (t && otyp === BOULDER) {
switch (t.ttyp) {
case LANDMINE:
if (rn2(10) > 2) {
await pline('KAABLAMM!!!');
deltrap(t);
place_object(singleobj, x, y);
singleobj.otrapped = 0;
used_up = true;
}
break;
case PIT:
case SPIKED_PIT:
case HOLE:
case TRAPDOOR:
// boulder falls into pit/hole
place_object(singleobj, x, y);
used_up = true;
dist = -1;
break;
default:
break;
}
if (used_up || dist === -1) break;
}
// Check for another boulder
const otmp2 = sobj_at(BOULDER, x, y);
if (otyp === BOULDER && otmp2) {
await pline('You hear a loud crash!');
wake_nearto(x, y, 100);
obj_extract_self(otmp2);
otmp2.otrapped = singleobj.otrapped;
singleobj.otrapped = 0;
place_object(singleobj, x, y);
singleobj = otmp2;
}
}
// Check for wall
if (dist > 0 && isok(x + dx, y + dy)) {
const loc = levl(x + dx, y + dy);
if (loc) {
const typ = loc.typ;
if (typ >= 1 && typ <= 5) { // IS_STWALL or IS_TREE
if (!Deaf()) await pline('Thump!');
wake_nearto(x, y, 16);
break;
}
}
}
}
if (!used_up) {
singleobj.otrapped = 0;
place_object(singleobj, x2, y2);
newsym(x2, y2);
return 1;
}
return 2;
}
// ── drain_en — drain magical energy ──
// C ref: trap.c:5180
// RNG: rnd(n) for throttling, rnd(-u.uen) for max drain
export async function drain_en(n, max_already_drained) {
const punct = max_already_drained ? '!' : '.';
let mesg;
if ((game.u?.uenmax || 0) < 1) {
if (game.u?.uen || game.u?.uenmax) {
game.u.uen = game.u.uenmax = 0;
}
mesg = 'momentarily lethargic';
} else {
// throttle further loss
if (n > Math.trunc(((game.u?.uen || 0) + (game.u?.uenmax || 0)) / 3))
n = rnd(n);
mesg = 'your magical energy drain away';
let exclaim = max_already_drained ? '!' : '.';
if (n > (game.u?.uen || 0)) exclaim = '!';
game.u.uen = (game.u?.uen || 0) - n;
if (game.u.uen < 0) {
game.u.uenmax = (game.u?.uenmax || 0) - rnd(-game.u.uen);
if (game.u.uenmax < 0) game.u.uenmax = 0;
game.u.uen = 0;
} else if (game.u.uen > game.u.uenmax) {
game.u.uen = game.u.uenmax;
}
}
await You_feel(`${mesg}${punct}`);
}
// ── selftouch — cockatrice corpse check when hero touches something ──
// C ref: trap.c:3861
export async function selftouch(arg) {
// C: checks uwep and uswapwep for corpse + touch_petrifies
// simplified — no corpse wielding system yet
}
// ── mselftouch — monster cockatrice corpse check ──
// C ref: trap.c:3891
export function mselftouch(mon, arg, byplayer) {
// simplified — no monster weapon corpse tracking yet
}
// ── float_up — start levitating ──
// C ref: trap.c:3915
export async function float_up() {
setBotl('float_up');
if (game.u?.utrap) {
if (game.u.utraptype === TT_PIT) {
await reset_utrap(false);
await You(`float up, out of the ${trapname(PIT, false)}!`);
game.vision_full_recalc = 1; // C ref: trap.c:3922
fill_pit(game.u.ux, game.u.uy);
} else if (game.u.utraptype === TT_LAVA || game.u.utraptype === TT_INFLOOR) {
await Your(`body pulls upward, but your ${makeplural(body_part(LEG))} are still stuck.`);
} else if (game.u.utraptype === TT_BURIEDBALL) {
await You(`feel lighter, but your ${body_part(LEG)} is still chained to the ground.`);
} else if (game.u.utraptype === TT_BEARTRAP) {
await You('float up slightly, but your leg is still stuck.');
} else if (game.u.utraptype === TT_WEB) {
await You(`float up slightly, but you are still stuck in the ${trapname(WEB, false)}.`);
}
} else if (game.u?.uinwater) {
await spoteffects(true);
} else if (game.u?.uswallow) {
if (is_animal(game.u.ustuck?.data))
await You(`float away from the ${surface(game.u.ux, game.u.uy)}.`);
else
await You(`spiral up into ${mon_nam(game.u.ustuck)}.`);
} else if (Hallucination()) {
await pline("Up, up, and awaaaay! You're walking on air!");
} else {
await You('start to float in the air!');
}
if (Flying())
await You('are no longer able to control your flight.');
float_vs_flight();
await encumber_msg();
}
// ── float_down — stop levitating ──
// C ref: trap.c:4002
// RNG: rnd(2) Sokoban fall damage
export async function float_down(hmask, emask) {
// C: HLevitation &= ~hmask; ELevitation &= ~emask;
// simplified — we don't track these bitmasks yet
if (Levitation()) return 0;
setBotl('float_down');
nomul(0);
// C ref: trap.c float_down() — if BFlying has I_SPECIAL from levitation,
// clear/recompute it before deciding whether flight continues.
if (game.u?.uprops?.[FLYING]?.blocked) {
float_vs_flight();
if (Flying()) {
await You('have stopped levitating and are now flying.');
await encumber_msg();
return 1;
}
}
// Check trap at current position
let trap = t_at(game.u?.ux, game.u?.uy);
if (!trap) {
if (Hallucination()) {
await pline("Bummer! You've hit the ground");
} else {
await You(`float gently to the ${surface(game.u?.ux, game.u?.uy)}.`);
}
}
// C ref: trap.c float_down() — after down-message, before trap handling.
await encumber_msg();
const currentDungeonLevel = { ...game.u.uz };
if (trap) {
switch (trap.ttyp) {
case STATUE_TRAP:
break;
case HOLE:
case TRAPDOOR:
if (!Can_fall_thru(game.u?.uz))
break;
// fall through
default:
if (!game.u?.utrap)
await dotrap(trap, NO_TRAP_FLAGS);
break;
}
}
if (!Is_airlevel(game.u?.uz)
&& !Is_waterlevel(game.u?.uz)
&& !game.u?.uswallow
&& on_level(game.u?.uz, currentDungeonLevel)) {
await pickup(1);
}
return 1;
}
// ── climb_pit — shared code for climbing out of a pit ──
// C ref: trap.c:4161
// RNG: rn2(2) boulder stuck, rn2(5) hallucination message
export async function climb_pit() {
if (!game.u?.utrap || game.u?.utraptype !== TT_PIT)
return;
const pitname = trapname(PIT, false);
if (Passes_walls()) {
await You(`ascend from the ${pitname}.`);
await reset_utrap(false);
fill_pit(game.u.ux, game.u.uy);
game.vision_full_recalc = 1; // C ref: trap.c:4174
} else if (!rn2(2) && sobj_at(BOULDER, game.u.ux, game.u.uy)) {
await Your(`${body_part(LEG)} gets stuck in a crevice.`);
await You(`free your ${body_part(LEG)}.`);
} else if ((Flying() || is_clinger(game.u?.data)) && !Sokoban()) {
await You(`${u_locomotion('climb')} from the ${pitname}.`);
await reset_utrap(false);
fill_pit(game.u.ux, game.u.uy);
game.vision_full_recalc = 1; // C ref: trap.c:4186
} else if (!(--game.u.utrap) || m_easy_escape_pit(game.youmonst)) {
await reset_utrap(false);
const edgeVerb = (Sokoban() && Levitation())
? 'struggle against the air currents and float'
: game.u.usteed ? 'ride' : 'crawl';
await You(`${edgeVerb} to the edge of the ${pitname}.`);
fill_pit(game.u.ux, game.u.uy);
game.vision_full_recalc = 1; // C ref: trap.c:4195
} else if (game.u?.dz || game.flags?.verbose) {
if (game.u?.usteed) {
await Norep(`${Monnam(game.u.usteed)} is still in a pit.`);
} else {
await Norep((Hallucination() && !rn2(5))
? "You've fallen, and you can't get up."
: 'You are still in a pit.');
}
}
}
// ── m_easy_escape_pit — can monster easily escape pit? ──
// C ref: trap.c:3704
function m_easy_escape_pit(mtmp) {
return monsndx(mtmp?.data) === PM_PIT_FIEND
|| (mtmp?.data?.msize || 0) >= MZ_HUGE;
}
// ── fall_through — hero falls through hole/trapdoor ──
// C ref: trap.c:603
export async function fall_through(td, ftflags) {
const plunged = !!(ftflags & TOOKPLUNGE);
let t = null;
if (Blind() && Levitation() && !Sokoban())
return;
if (td) {
t = t_at(game.u?.ux, game.u?.uy);
if (t) feeltrap(t);
if (!Sokoban() && !plunged) {
if (t && t.ttyp === TRAPDOOR)
await pline('A trap door opens up under you!');
else
await pline("There's a gaping hole under you!");
}
} else {
await pline_The(`${surface(game.u?.ux, game.u?.uy)} opens up under you!`);
}
// Check if hero can avoid falling
if (Levitation() || Flying()) {
await You("don't fall in.");
return;
}
// C ref: trap.c:672-697 — schedule_goto(&dtmp, ...)
// Prefer trap destination when present, otherwise fall one level down.
const tolev = (t?.dst && Number.isInteger(t.dst.dnum) && Number.isInteger(t.dst.dlevel))
? { dnum: t.dst.dnum, dlevel: t.dst.dlevel }
: { dnum: game.u?.uz?.dnum ?? 0, dlevel: (game.u?.uz?.dlevel ?? 1) + 1 };
schedule_goto(tolev, !Flying() ? UTOTYPE_FALLING : UTOTYPE_NONE, null, null);
}
// ── check_in_air — hero version (used in dotrap) ──
// C ref: trap.c:1087
function check_in_air(trflags) {
const plunged = (trflags & (TOOKPLUNGE | VIASITTING)) !== 0;
return Levitation() || (Flying() && !plunged);
}
// ── check_in_air_mon — monster version ──
function check_in_air_mon(mtmp, trflags) {
return m_in_air(mtmp);
}
// ── unconscious — is hero unconscious? ──
// C ref: trap.c:6754
export function unconscious() {
return (game.multi || 0) < 0 && !!game.u?.usleep;
}
// ── fire_damage — set an item on fire ──
// C ref: trap.c:4433
// RNG: rn2(chance) for containers, rn2(20) for luck
export async function fire_damage(obj, force, x, y) {
if (!obj) return false;
if (await catch_lit(obj)) return false;
if (Is_container(obj)) {
let chance;
switch (obj.otyp) {
case 0: return false; // ICE_BOX/STATUE
default: chance = 20; break;
}
if (!force && (game.u?.Luck || 0) + 5 > rn2(chance))
return false;
delobj(obj);
return true;
} else if (!force && (game.u?.Luck || 0) + 5 > rn2(20)) {
return false;
} else if (await erode_obj(obj, null, ERODE_BURN, EF_DESTROY) === ER_DESTROYED) {
return true;
}
return false;
}
// ── fire_damage_chain — apply fire_damage to chain ──
// C ref: trap.c:4528
export async function fire_damage_chain(chain, force, here, x, y) {
let num = 0;
let obj = chain;
while (obj) {
const nobj = here ? obj.nexthere : obj.nobj;
if (await fire_damage(obj, force, x, y))
++num;
obj = nobj;
}
return num;
}
// ── water_damage — water damages an object ──
// C ref: trap.c:4690
// RNG: rn2(2) grease loss, rn2(20) luck protection, rnd(7-spe) towel
export async function water_damage(obj, ostr, force) {
if (!obj) return ER_NOTHING;
if (splash_lit(obj)) return ER_DAMAGED;
if (!ostr) ostr = cxname(obj);
const in_invent = carried(obj);
// C ref: trap.c:4708 CAN_OF_GREASE (spe>0) → no damage.
if (obj.otyp === CAN_OF_GREASE && (obj.spe || 0) > 0) {
return ER_NOTHING;
}
// C ref: trap.c:4710 TOWEL absorbs water.
if (obj.otyp === TOWEL && (obj.spe || 0) < 7) {
// TODO: wet_a_towel not yet ported; consume no RNG and return.
return ER_NOTHING;
}
if (obj.greased) {
if (!rn2(2)) {
obj.greased = 0;
if (in_invent) {
await pline_The(`grease on your ${ostr} washes off.`);
update_inventory();
}
// C ref: trap.c:4724 ungreased POT_ACID destroyed by water.
if (obj.otyp === POT_ACID) {
// TODO: pot_acid_damage
return ER_DESTROYED;
}
}
return ER_GREASED;
}
// C ref: trap.c:4731-4750 container handling.
if (Is_container(obj) && !(obj.otyp === ICE_BOX || obj.otyp === CHEST
|| obj.otyp === LARGE_BOX
|| obj.otyp === OILSKIN_SACK)) {
// Non-waterproof container: contents get damaged.
if (in_invent) {
await pline(`Some water gets into your ${ostr}!`);
}
await water_damage_chain(obj.cobj, false);
return ER_DAMAGED;
}
if (obj.otyp === ICE_BOX || obj.otyp === CHEST || obj.otyp === LARGE_BOX
|| obj.otyp === OILSKIN_SACK) {
// Waterproof: message + ER_DAMAGED (see C comment).
return ER_DAMAGED;
}
// C ref: trap.c:4751 luck-based save (only when !force).
if (!force && (game.u?.Luck || 0) + 5 > rn2(20)) {
return ER_NOTHING;
}
// C ref: trap.c:4758 SCROLL_CLASS → blank.
if (obj.oclass === SCROLL_CLASS) {
if (obj.otyp === SCR_BLANK_PAPER) return ER_NOTHING;
if (in_invent) await Your(`${ostr} fades.`);
obj.otyp = SCR_BLANK_PAPER;
obj.dknown = 0;
obj.spe = 0;
if (in_invent) update_inventory();
return ER_DAMAGED;
}
// C ref: trap.c:4773 SPBOOK_CLASS → blank.
if (obj.oclass === SPBOOK_CLASS) {
if (obj.otyp === SPE_BOOK_OF_THE_DEAD || obj.otyp === SPE_BLANK_PAPER) {
return ER_NOTHING;
}
if (in_invent) await Your(`${ostr} fades.`);
obj.otyp = SPE_BLANK_PAPER;
if (obj.spestudied) obj.spestudied = rn2(obj.spestudied);
obj.dknown = 0;
if (in_invent) update_inventory();
return ER_DAMAGED;
}
// C ref: trap.c:4804 POTION_CLASS → dilute or destroy.
if (obj.oclass === POTION_CLASS) {
if (obj.otyp === POT_ACID) {
// TODO: pot_acid_damage
return ER_DESTROYED;
}
if (obj.odiluted) {
if (in_invent) await Your(`${ostr} dilutes further.`);
obj.otyp = POT_WATER;
obj.dknown = 0;
obj.blessed = 0;
obj.cursed = 0;
obj.odiluted = 0;
if (in_invent) update_inventory();
return ER_DAMAGED;
}
if (obj.otyp !== POT_WATER) {
if (in_invent) await Your(`${ostr} dilutes.`);
obj.odiluted = (obj.odiluted || 0) + 1;
if (in_invent) update_inventory();
return ER_DAMAGED;
}
return ER_NOTHING;
}
// Default: corrodible items erode.
return await erode_obj(obj, ostr, ERODE_RUST, EF_NONE);
}
// ── water_damage_chain — apply water_damage to chain ──
// C ref: trap.c:4833
export async function water_damage_chain(chain, here) {
let obj = chain;
while (obj) {
const otmp = here ? obj.nexthere : obj.nobj;
await water_damage(obj, null, false);
obj = otmp;
}
}
// ── chest_trap — trapped chest effect ──
// C ref: trap.c:6272
// RNG: rn2(13+Luck) for save, rn2(13) for lucky msg, rn2(20)/rn2(13-Luck)/rn2(26) for effect
export async function chest_trap(obj, bodypart, disarm) {
obj.tknown = 0;
obj.otrapped = 0;
await You(disarm ? 'set it off!' : 'trigger a trap!');
if ((game.u?.Luck || 0) > -13 && rn2(13 + (game.u?.Luck || 0)) > 7) {
// saved by luck
let msg;
switch (rn2(13)) {
case 12: case 11: msg = 'explosive charge is a dud'; break;
case 10: case 9: msg = 'electric charge is grounded'; break;
case 8: case 7: msg = 'flame fizzles out'; break;
case 6: case 5: case 4: msg = 'poisoned needle misses'; break;
default: msg = 'gas cloud blows away'; break;
}
await pline(`But luckily the ${msg}!`);
} else {
const traptype = rn2(20) ? ((game.u?.Luck || 0) >= 13 ? 0 : rn2(13 - (game.u?.Luck || 0))) : rn2(26);
switch (traptype) {
case 25: case 24: case 23: case 22: case 21:
// explosion
await pline('It explodes!');
await losehp(Maybe_Half_Phys(c_d(6, 6)), 'exploding chest', KILLED_BY_AN);
exercise(A_STR, false);
break;
case 20: case 19: case 18: case 17:
// poison gas
await pline(`A cloud of noxious gas billows from ${the(xname(obj))}.`);
if (rn2(3))
await poisoned('gas cloud', A_STR, 'cloud of poison gas', 15, false);
exercise(A_CON, false);
break;
case 16: case 15: case 14: case 13:
// poisoned needle
await You_feel(`a needle prick your ${body_part(bodypart)}.`);
await poisoned('needle', A_CON, 'poisoned needle', 10, false);
exercise(A_CON, false);
break;
case 12: case 11: case 10: case 9:
// fire
await dofiretrap(obj);
break;
case 8: case 7: case 6: {
// electric shock
const dmg = c_d(4, 4);
const orig_dmg = dmg;
await You('are jolted by a surge of electricity!');
if (Shock_resistance()) {
shieldeff(game.u?.ux, game.u?.uy);
await You("don't seem to be affected.");
} else {
await losehp(dmg, 'electric shock', KILLED_BY_AN);
}
await destroy_items(game.u, AD_ELEC, orig_dmg);
break;
}
case 5: case 4: case 3:
// paralysis
await pline('Suddenly you are frozen in place!');
nomul(-c_d(5, 6));
exercise(A_DEX, false);
break;
case 2: case 1: case 0:
// stunning gas
await pline(`A cloud of ${Blind() ? 'humid' : rndcolor()} gas billows from ${the(xname(obj))}.`);
await make_stunned(rn1(7, 16), false);
await make_hallucinated(rn1(5, 16), false, 0);
break;
default:
break;
}
}
obj.tknown = 1;
return false;
}
// ── sokoban_guilt — luck penalty for sokoban misbehavior ──
// C ref: trap.c:7017
export function sokoban_guilt() {
if (Sokoban()) {
// C: u.uconduct.sokocheat++; change_luck(-1);
}
}
// ── trap_ice_effects — handle traps when ice melts ──
// C ref: trap.c:7150
export function trap_ice_effects(x, y, ice_is_melting) {
const ttmp = t_at(x, y);
if (ttmp && ice_is_melting) {
const mtmp = m_at(x, y);
if (mtmp && mtmp.mtrapped)
mtmp.mtrapped = 0;
if (ttmp.ttyp === LANDMINE || ttmp.ttyp === BEAR_TRAP) {
cnv_trap_obj(ttmp.ttyp === LANDMINE ? 0 : 0, 1, ttmp, true);
} else if (!undestroyable_trap(ttmp.ttyp)) {
deltrap(ttmp);
}
}
}
// ── lava_effects — hero enters lava ──
// C ref: trap.c:6772
// RNG: d(6,6) for water walking damage
export async function lava_effects() {
const dmg = c_d(6, 6);
await burn_away_slime();
// simplified — full lava effects require extensive infrastructure
if (Fire_resistance()) {
return false;
}
await You(`fall into the lava!`);
await losehp(dmg, 'molten lava', KILLED_BY);
return false;
}
// ── sink_into_lava — called each turn when trapped in lava ──
// C ref: trap.c:6969
export async function sink_into_lava() {
if (!game.u?.utrap || game.u?.utraptype !== TT_LAVA)
return;
if (!Fire_resistance())
game.u.uhp = Math.trunc((game.u.uhp + 2) / 3);
game.u.utrap -= (1 << 8);
if (game.u.utrap < (1 << 8)) {
await urgent_pline('You sink below the surface and die.');
await burn_away_slime();
await done('dissolved');
}
}
// ── rnd_nextto_goodpos — find random adjacent safe position ──
// C ref: trap.c:4925
export async function rnd_nextto_goodpos(pos, mtmp) {
const g = game;
const is_u = (mtmp === g.youmonst);
const dirs = [];
for (let i = 0; i < N_DIRS; ++i) dirs[i] = i;
// C ref: trap.c:4933-4937 — Fisher-Yates shuffle of directions
for (let i = N_DIRS; i > 0; --i) {
const j = rn2(i);
const k = dirs[j];
dirs[j] = dirs[i - 1];
dirs[i - 1] = k;
}
for (let i = 0; i < N_DIRS; ++i) {
const nx = pos.x + xdir[dirs[i]];
const ny = pos.y + ydir[dirs[i]];
if (is_u ? await crawl_destination(nx, ny) : goodpos(nx, ny, mtmp, 0)) {
pos.x = nx;
pos.y = ny;
return true;
}
}
return false;
}
// ── drown — hero falls into water ──
// C ref: trap.c:5037
// RNG: rn2(5) water effects, rn2(3) gremlin split, d(2,6) iron golem rust
export async function drown() {
const g = game;
const u = g.u;
await You(`fall into the water!`);
// C ref: trap.c:5123-5127 — wake up / recover from faint
// (simplified: skip usleep/faint checks)
// C ref: trap.c:5129-5147 — try to crawl out
const pos = { x: u.ux, y: u.uy };
if ((g.multi || 0) >= 0 && g.youmonst?.data?.mmove
&& await rnd_nextto_goodpos(pos, g.youmonst)) {
// C ref: trap.c:5137-5146 — try to strip gear and crawl out
await You('try to crawl out of the %s.', hliquid('water'));
// emergency_disrobe not fully ported — simplified success
await pline('Pheew! That was close.');
await teleds(pos.x, pos.y, TELEDS_ALLOW_DRAG);
return true;
}
// C ref: trap.c:5148-5149 — drowning
if (u.umonnum === PM_IRON_GOLEM) {
await You('rust!');
const i = Maybe_Half_Phys(c_d(2, 6));
await losehp(i, 'rusting away', KILLED_BY);
}
return false;
}
// ── back_on_ground — message about landing ──
// C ref: trap.c:4954
// C ref: trap.c:4956 back_on_ground()
export async function back_on_ground(rescued) {
let preposit = (Levitation() || Flying()) ? 'over' : 'on';
let surf = surface(game.u?.ux, game.u?.uy);
if (surf === 'floor' || surf === 'ground') {
surf = 'solid ground';
} else if (surf === 'bridge' || surf === 'altar' || surf === 'headstone') {
surf = `a ${surf}`;
} else if (surf === 'stairs' || surf === 'lava' || surf === 'bottom') {
surf = `the ${surf}`;
} else if (surf === 'air') {
surf = `the ${surf}`;
preposit = 'in';
} else {
surf = `a ${surf}`;
preposit = 'in';
}
if (rescued)
await pline(`You find yourself ${preposit} ${surf}.`);
else
await pline(`You are back ${preposit} ${surf}.`);
}
// ── launch_in_progress — is a launch currently happening? ──
// C ref: trap.c:3233
export function launch_in_progress() {
return false; // simplified
}
// ── force_launch_placement — force place launched object ──
// C ref: trap.c:3241
export function force_launch_placement() {
// simplified
}
// ── conjoined_pits / adj_nonconjoined_pit / clear_conjoined_pits ──
function conjoined_pits(_trap, _otrap, _u_entering) { return false; }
function adj_nonconjoined_pit(_trap) { return false; }
function clear_conjoined_pits(_trap) { /* TODO */ }
// ── trapname — get display name for a trap type ──
// C ref: trap.c:7078
export function trapname(ttype, _force) {
const names = {
[ARROW_TRAP]: 'arrow trap',
[DART_TRAP]: 'dart trap',
[ROCKTRAP]: 'falling rock trap',
[SQKY_BOARD]: 'squeaky board',
[BEAR_TRAP]: 'bear trap',
[SLP_GAS_TRAP]: 'sleeping gas trap',
[RUST_TRAP]: 'rust trap',
[FIRE_TRAP]: 'fire trap',
[PIT]: 'pit',
[SPIKED_PIT]: 'spiked pit',
[HOLE]: 'hole',
[TRAPDOOR]: 'trapdoor',
[TELEP_TRAP]: 'teleportation trap',
[LEVEL_TELEP]: 'level teleporter',
[WEB]: 'web',
[STATUE_TRAP]: 'statue trap',
[MAGIC_TRAP]: 'magic trap',
[ANTI_MAGIC]: 'anti-magic field',
[POLY_TRAP]: 'polymorph trap',
[LANDMINE]: 'land mine',
[ROLLING_BOULDER_TRAP]: 'rolling boulder trap',
[MAGIC_PORTAL]: 'magic portal',
[VIBRATING_SQUARE]: 'vibrating square',
};
if (Hallucination() && !_force) {
return 'trap';
}
return names[ttype] || 'trap';
}
// ── delfloortrap — remove a floor trap ──
// C ref: trap.c:6646
export function delfloortrap(ttmp) {
if (!ttmp) return true;
const level = game.level;
if (level?.traps) {
const idx = level.traps.indexOf(ttmp);
if (idx >= 0) level.traps.splice(idx, 1);
}
const loc = levl(ttmp.tx, ttmp.ty);
if (loc) {
loc.trap = null;
}
newsym(ttmp.tx, ttmp.ty);
return true;
}
// ── b_trapped — triggered a booby trap on a chest/door ──
// C ref: trap.c:6672
// RNG: rn1(4, 2) for damage = 2-5
export async function b_trapped(item, bodypart) {
const dmg = rn1(4, 2);
await pline('KABOOM!! You triggered a booby trap!');
await losehp(Maybe_Half_Phys(dmg), 'booby trap', KILLED_BY_AN);
exercise(A_STR, false);
exercise(A_CON, false);
}
// ── t_missile — create a trap projectile ──
// C ref: trap.c:1020
function t_missile(otyp, trap) {
const otmp = mksobj(otyp, true, false);
otmp.quan = 1;
otmp.owt = weight(otmp);
otmp.opoisoned = 0;
otmp.ox = trap.tx;
otmp.oy = trap.ty;
return otmp;
}
// ── set_utrap / reset_utrap ──
// C ref: trap.c:1032, 1047
// C ref: trap.c:1032
export function set_utrap(tim, typ) {
const u = game.u;
// C ref: trap.c:1037-1038 — SET_BOTL if trap state changes
if (!u.utrap ^ !tim)
setBotl('set_utrap');
u.utrap = tim;
u.utraptype = tim ? typ : TT_NONE;
// C ref: trap.c:1043 — float_vs_flight may block Lev/Fly
float_vs_flight();
}
// C ref: trap.c:1047
export async function reset_utrap(msg) {
const was_Lev = !!Levitation();
const was_Fly = !!Flying();
set_utrap(0, 0);
if (msg) {
if (!was_Lev && Levitation()) await float_up();
if (!was_Fly && Flying()) { /* You("can fly."); */ }
}
}
// float_vs_flight: imported from polyself.js
// float_up already defined above (line 817)
// ── seetrap / feeltrap ──
// C ref: trap.c:3557, 3567
export function seetrap(trap) {
if (!trap.tseen) {
trap.tseen = true;
newsym(trap.tx, trap.ty);
}
}
export function feeltrap(trap) {
trap.tseen = true;
map_trap(trap, 1);
newsym(trap.tx, trap.ty);
}
// ── floor_trigger — is trap type triggered by touching the floor? ──
// C ref: trap.c:1062
function floor_trigger(ttype) {
switch (ttype) {
case ARROW_TRAP: case DART_TRAP: case ROCKTRAP: case SQKY_BOARD:
case BEAR_TRAP: case LANDMINE: case ROLLING_BOULDER_TRAP:
case SLP_GAS_TRAP: case RUST_TRAP: case FIRE_TRAP:
case PIT: case SPIKED_PIT: case HOLE: case TRAPDOOR:
return true;
default:
return false;
}
}
// C ref: trap.c:unknown — undestroyable_trap
export function undestroyable_trap(ttyp) {
return ttyp === MAGIC_PORTAL || ttyp === VIBRATING_SQUARE;
}
// ── dotrap — hero steps on a trap ──
// C ref: trap.c:2994
// RNG: rn2(5) escape check, then trap-specific effects
export async function dotrap(trap, trflags) {
if (!trap) return;
trflags = trflags || 0;
const ttype = trap.ttyp;
const already_seen = trap.tseen;
let forcetrap = ((trflags & FORCETRAP) !== 0
|| (trflags & FAILEDUNTRAP) !== 0);
const forcebungle = (trflags & FORCEBUNGLE) !== 0;
const plunged = (trflags & TOOKPLUNGE) !== 0;
const conj_pit = conjoined_pits(trap, t_at(game.u?.ux0, game.u?.uy0), true);
const adj_pit = adj_nonconjoined_pit(trap);
nomul(0);
// C: fixed_tele_trap check — TODO
// if (fixed_tele_trap(trap)) { trflags |= FORCETRAP; forcetrap = true; }
// Sokoban pit/hole forcing
if (Sokoban() && (is_pit(ttype) || is_hole(ttype))) {
await pline(`Air currents pull you down into ${trap.madeby_u ? 'your' : 'a'} ${trapname(ttype, true)}!`);
} else if (!forcetrap) {
if (floor_trigger(ttype) && check_in_air(trflags)) {
if (already_seen) {
await You(`step over ${trap.madeby_u ? 'your' : (ttype === ARROW_TRAP ? 'an' : 'a')} ${trapname(ttype, false)}.`);
}
return;
}
if (already_seen && !Fumbling() && !undestroyable_trap(ttype)
&& ttype !== ANTI_MAGIC && !forcebungle && !plunged
&& !conj_pit && !adj_pit
&& (!rn2(5) || (is_pit(ttype) && is_clinger(game.u?.data)))) {
await You(`escape ${trap.madeby_u ? 'your' : (ttype === ARROW_TRAP ? 'an' : 'a')} ${trapname(ttype, false)}.`);
return;
}
}
// C: mon_learns_traps, mons_see_trap — TODO
// Update remembered glyph for trap visibility
trap.tseen = true;
const trapLoc = game.level?.at(trap.tx, trap.ty);
if (trapLoc) {
const symIdx = S_arrow_trap + trap.ttyp - 1;
// gbuf-cleanup Phase 6b: memory derived from loc.glyph via
// map_glyphinfo at render time; store just the canonical int.
trapLoc.glyph = trap_to_glyph(symIdx);
}
// Dispatch to trap-specific effect
await trapeffect_selector_hero(trap, trflags);
}
// ── trapeffect_selector for hero (mtmp == youmonst) ──
async function trapeffect_selector_hero(trap, trflags) {
switch (trap.ttyp) {
case ARROW_TRAP:
case DART_TRAP:
await trapeffect_arrow_dart(trap, trflags);
break;
case ROCKTRAP:
await trapeffect_rocktrap(trap, trflags);
break;
case SQKY_BOARD:
await trapeffect_sqky_board(trap, trflags);
break;
case BEAR_TRAP:
await trapeffect_bear_trap(trap, trflags);
break;
case SLP_GAS_TRAP:
await trapeffect_slp_gas_trap(trap, trflags);
break;
case RUST_TRAP:
await trapeffect_rust_trap(trap, trflags);
break;
case FIRE_TRAP:
await trapeffect_fire_trap(trap, trflags);
break;
case PIT:
case SPIKED_PIT:
await trapeffect_pit(trap, trflags);
break;
case HOLE:
case TRAPDOOR:
await trapeffect_hole(trap, trflags);
break;
case TELEP_TRAP:
await trapeffect_telep(trap, trflags);
break;
case LEVEL_TELEP:
await trapeffect_level_telep_hero(trap, trflags);
break;
case WEB:
await trapeffect_web(trap, trflags);
break;
case STATUE_TRAP:
await trapeffect_statue_trap(trap, trflags);
break;
case MAGIC_TRAP:
await trapeffect_magic_trap(trap, trflags);
break;
case ANTI_MAGIC:
await trapeffect_anti_magic(trap, trflags);
break;
case POLY_TRAP:
await trapeffect_poly_trap(trap, trflags);
break;
case LANDMINE:
await trapeffect_landmine(trap, trflags);
break;
case ROLLING_BOULDER_TRAP:
await trapeffect_rolling_boulder_trap(trap, trflags);
break;
case MAGIC_PORTAL:
await trapeffect_magic_portal_hero(trap, trflags);
break;
case VIBRATING_SQUARE:
await trapeffect_vibrating_square(trap, trflags);
break;
default:
await pline(`A ${trapname(trap.ttyp, false)}!`);
break;
}
}
// ── mintrap — monster steps on a trap ──
// C ref: trap.c:3712
// RNG: rn2(40) escape check, per-type dispatch
export async function mintrap(mtmp, mintrapflags) {
if (!mtmp) return 0;
mintrapflags = mintrapflags || 0;
const trap = t_at(mtmp.mx, mtmp.my);
let trap_result = Trap_Effect_Finished;
if (!trap) {
mtmp.mtrapped = 0;
} else if (mtmp.mtrapped) {
// Monster is currently in the trap
if (!trap.tseen && cansee(mtmp.mx, mtmp.my) && canseemon(mtmp)
&& (is_pit(trap.ttyp) || trap.ttyp === BEAR_TRAP
|| trap.ttyp === HOLE || trap.ttyp === WEB)) {
seetrap(trap);
}
if (!rn2(40) || (is_pit(trap.ttyp) && m_easy_escape_pit(mtmp))) {
if (sobj_at(BOULDER, mtmp.mx, mtmp.my) && is_pit(trap.ttyp)) {
if (!rn2(2)) {
mtmp.mtrapped = 0;
if (canseemon(mtmp))
await pline(`${Monnam(mtmp)} pulls free...`);
fill_pit(mtmp.mx, mtmp.my);
}
} else {
if (canseemon(mtmp)) {
if (is_pit(trap.ttyp))
await pline(`${Monnam(mtmp)} climbs ${m_easy_escape_pit(mtmp) ? 'easily ' : ''}out of the pit.`);
else if (trap.ttyp === BEAR_TRAP || trap.ttyp === WEB)
await pline(`${Monnam(mtmp)} pulls free of the ${trapname(trap.ttyp, false)}.`);
}
mtmp.mtrapped = 0;
}
} else if (metallivorous(mtmp.data)) {
if (trap.ttyp === BEAR_TRAP) {
if (canseemon(mtmp))
await pline(`${Monnam(mtmp)} eats a bear trap!`);
deltrap(trap);
mtmp.meating = 5;
mtmp.mtrapped = 0;
} else if (trap.ttyp === SPIKED_PIT) {
if (canseemon(mtmp))
await pline(`${Monnam(mtmp)} munches on some spikes!`);
trap.ttyp = PIT;
mtmp.meating = 5;
}
}
trap_result = mtmp.mtrapped ? Trap_Caught_Mon : Trap_Effect_Finished;
} else {
// Monster encounters trap for the first time
const tt = trap.ttyp;
let forcetrap = ((mintrapflags & FORCETRAP) !== 0);
const forcebungle = (mintrapflags & FORCEBUNGLE) !== 0;
const already_seen = (mon_knows_traps(mtmp, tt)
|| (tt === HOLE && !mindless(mtmp.data)));
// C: fixed_tele_trap — TODO
if (!forcetrap) {
if (floor_trigger(tt) && m_in_air(mtmp)) {
return Trap_Effect_Finished;
}
if (already_seen && rn2(4) && !forcebungle)
return Trap_Effect_Finished;
}
// C ref: trap.c:3794-3795 — monster learns about this trap type
mon_learns_traps(mtmp, tt);
// mons_see_trap — TODO (nearby monsters also learn)
if (trap.madeby_u && rnl(5))
await setmangry(mtmp, false);
trap_result = await trapeffect_selector_mon(mtmp, trap, mintrapflags);
// unhide trapped monster
if (mtmp.mhp > 0 && mtmp.mtrapped) {
// C: maybe_unhide_at — simplified
}
}
return trap_result;
}
// ── trapeffect_selector for monsters ──
async function trapeffect_selector_mon(mtmp, trap, trflags) {
const in_sight = canseemon(mtmp);
const see_it = cansee(mtmp.mx, mtmp.my);
let trapkilled = false;
switch (trap.ttyp) {
case ARROW_TRAP:
case DART_TRAP: {
const isArrow = trap.ttyp === ARROW_TRAP;
if (trap.once && trap.tseen && !rn2(15)) {
if (in_sight && see_it)
await pline(`${Monnam(mtmp)} triggers a trap but nothing happens.`);
deltrap(trap);
newsym(mtmp.mx, mtmp.my);
return Trap_Is_Gone;
}
trap.once = true;
const otmp = t_missile(isArrow ? ARROW : DART, trap);
if (!isArrow && !rn2(6))
otmp.opoisoned = 1;
if (in_sight)
seetrap(trap);
if (await thitm(isArrow ? 8 : 7, mtmp, otmp, 0, false))
trapkilled = true;
return trapkilled ? Trap_Killed_Mon : mtmp.mtrapped
? Trap_Caught_Mon : Trap_Effect_Finished;
}
case ROCKTRAP: {
if (trap.once && trap.tseen && !rn2(15)) {
if (in_sight && see_it)
await pline(`A trap door above ${mon_nam(mtmp)} opens, but nothing falls out!`);
deltrap(trap);
newsym(mtmp.mx, mtmp.my);
return Trap_Is_Gone;
}
trap.once = true;
const otmp = t_missile(ROCK, trap);
if (in_sight) seetrap(trap);
if (await thitm(0, mtmp, otmp, c_d(2, 6), false))
trapkilled = true;
return trapkilled ? Trap_Killed_Mon : mtmp.mtrapped
? Trap_Caught_Mon : Trap_Effect_Finished;
}
case SQKY_BOARD:
if (m_in_air(mtmp)) return Trap_Effect_Finished;
if (in_sight) {
if (!Deaf()) {
await pline(`A board beneath ${mon_nam(mtmp)} squeaks ${trapnote(trap, false)} loudly.`);
seetrap(trap);
} else if (!mindless(mtmp.data)) {
await pline(`${Monnam(mtmp)} stops momentarily and appears to cringe.`);
}
} else {
// C ref: trap.c:1458 — near/far threshold like mzapmsg
const range = couldsee(mtmp.mx, mtmp.my) ? (BOLT_LIM + 1) : (BOLT_LIM - 3);
await You_hear(`${trapnote(trap, false)} squeak ${(mdistu(mtmp) <= range * range) ? 'nearby' : 'in the distance'}.`);
}
wake_nearto(mtmp.mx, mtmp.my, 40);
return Trap_Effect_Finished;
case BEAR_TRAP: {
const mptr = mtmp.data;
if (mptr && mptr.msize > MZ_SMALL && !amorphous(mptr) && !m_in_air(mtmp)
&& !is_whirly(mptr) && !unsolid(mptr)) {
mtmp.mtrapped = 1;
if (in_sight) {
await pline(`${Monnam(mtmp)} is caught in ${trap.madeby_u ? 'your' : 'a'} bear trap!`);
seetrap(trap);
} else {
if (monsndx(mptr) === PM_OWLBEAR || monsndx(mptr) === PM_BUGBEAR)
await You_hear('the roaring of an angry bear!');
}
}
if (mtmp.mtrapped && !wearing_iron_shoes(mtmp)) {
if (await thitm(0, mtmp, null, c_d(2, 4), false))
trapkilled = true;
}
return trapkilled ? Trap_Killed_Mon : mtmp.mtrapped
? Trap_Caught_Mon : Trap_Effect_Finished;
}
case SLP_GAS_TRAP:
if (!resists_sleep(mtmp) && !breathless(mtmp.data)
&& !helpless(mtmp)) {
if (sleep_monst(mtmp, rnd(25), -1) && in_sight) {
await pline(`${Monnam(mtmp)} suddenly falls asleep!`);
seetrap(trap);
}
}
return Trap_Effect_Finished;
case RUST_TRAP: {
if (in_sight) seetrap(trap);
const rcase = rn2(5);
if (in_sight) {
if (rcase <= 2)
await pline(`A gush of water hits ${mon_nam(mtmp)} on the head!`);
else
await pline(`A gush of water hits ${mon_nam(mtmp)}!`);
}
if (completelyrusts(mtmp.data)) {
if (in_sight) await pline(`${Monnam(mtmp)} falls to pieces!`);
await monkilled(mtmp, null, AD_RUST);
if (mtmp.mhp <= 0) trapkilled = true;
} else if (monsndx(mtmp.data) === PM_GREMLIN && rn2(3)) {
// C: split_mon — TODO
}
return trapkilled ? Trap_Killed_Mon : mtmp.mtrapped
? Trap_Caught_Mon : Trap_Effect_Finished;
}
case FIRE_TRAP: {
const orig_dmg = c_d(2, 4);
if (in_sight) await pline(`A tower of flame erupts from the floor under ${mon_nam(mtmp)}!`);
if (resists_fire(mtmp)) {
if (in_sight) {
shieldeff(mtmp.mx, mtmp.my);
await pline(`${Monnam(mtmp)} is uninjured.`);
}
} else {
let num = orig_dmg;
const idx = monsndx(mtmp.data);
if (idx === PM_PAPER_GOLEM) num = Math.max(num, mtmp.mhpmax || 1);
else if (idx === PM_STRAW_GOLEM) num = Math.max(num, Math.trunc((mtmp.mhpmax || 1) / 2));
else if (idx === PM_WOOD_GOLEM) num = Math.max(num, Math.trunc((mtmp.mhpmax || 1) / 4));
else if (idx === PM_LEATHER_GOLEM) num = Math.max(num, Math.trunc((mtmp.mhpmax || 1) / 8));
mtmp.mhp = (mtmp.mhp || 0) - num;
if (mtmp.mhp <= 0) {
await monkilled(mtmp, '', AD_FIRE);
trapkilled = true;
} else {
mtmp.mhpmax = (mtmp.mhpmax || 0) - rn2(num + 1);
if (mtmp.mhp > mtmp.mhpmax) mtmp.mhp = mtmp.mhpmax;
}
}
if (see_it && t_at(mtmp.mx, mtmp.my)) seetrap(t_at(mtmp.mx, mtmp.my));
return trapkilled ? Trap_Killed_Mon : mtmp.mtrapped
? Trap_Caught_Mon : Trap_Effect_Finished;
}
case PIT:
case SPIKED_PIT: {
const mptr = mtmp.data;
const forcetrap = ((trflags & FORCETRAP) !== 0);
const inescapable = forcetrap || (Sokoban() && !trap.madeby_u);
const relevant_spikes = trap.ttyp === SPIKED_PIT && !wearing_iron_shoes(mtmp);
if (!grounded(mptr)) {
if (!inescapable) return Trap_Effect_Finished;
}
if (!passes_walls(mptr)) mtmp.mtrapped = 1;
if (in_sight) {
await pline(`${Monnam(mtmp)} falls into ${trap.madeby_u ? 'your' : 'a'} pit!`);
if (monsndx(mptr) === PM_PIT_VIPER || monsndx(mptr) === PM_PIT_FIEND)
await pline("How pitiful. Isn't that the pits?");
seetrap(trap);
}
// C ref: trap.c:2000-2002 — use thitm for damage (calls monkilled on death)
if (DEADMONSTER(mtmp) || await thitm(0, mtmp, null, rnd(relevant_spikes ? 10 : 6), false))
trapkilled = true;
return trapkilled ? Trap_Killed_Mon : mtmp.mtrapped
? Trap_Caught_Mon : Trap_Effect_Finished;
}
case HOLE:
case TRAPDOOR: {
const mptr = mtmp.data;
const forcetrap = ((trflags & FORCETRAP) !== 0);
const inescapable = forcetrap || (Sokoban() && !trap.madeby_u);
if (!grounded(mptr) || (mptr && mptr.msize >= MZ_HUGE)) {
if (!inescapable) return Trap_Effect_Finished;
if (in_sight) {
await pline(`${Monnam(mtmp)} seems to be yanked down!`);
seetrap(trap);
}
}
return await mlevel_tele_trap(mtmp, trap, ((trflags & FORCETRAP) !== 0), in_sight);
}
case TELEP_TRAP:
mtele_trap(mtmp, trap, in_sight);
return Trap_Moved_Mon;
case LEVEL_TELEP:
return await mlevel_tele_trap(mtmp, trap, ((trflags & FORCETRAP) !== 0), in_sight);
case MAGIC_PORTAL:
return await mlevel_tele_trap(mtmp, trap, ((trflags & FORCETRAP) !== 0), in_sight);
case WEB: {
const mptr = mtmp.data;
if (webmaker(mptr)) return Trap_Effect_Finished;
if (await mu_maybe_destroy_web(mtmp, in_sight, trap))
return Trap_Effect_Finished;
let tear_web = false;
const idx = monsndx(mptr);
if (idx === PM_TITANOTHERE || idx === PM_BALUCHITHERIUM
|| idx === PM_PURPLE_WORM || idx === PM_JABBERWOCK
|| idx === PM_IRON_GOLEM || idx === PM_BALROG
|| idx === PM_KRAKEN || idx === PM_MASTODON
|| idx === PM_ORION || idx === PM_NORN
|| idx === PM_CYCLOPS || idx === PM_LORD_SURTUR) {
tear_web = true;
} else if (mptr && (mptr.mlet === S_GIANT
|| (mptr.mlet === S_DRAGON && (mptr.mflags2 & 0x02000000)))) { // M2_NASTY
tear_web = true;
} else {
if (in_sight) {
await pline(`${Monnam(mtmp)} is caught in ${trap.madeby_u ? 'your' : 'a'} spider web.`);
seetrap(trap);
}
mtmp.mtrapped = 1;
}
if (tear_web) {
if (in_sight)
await pline(`${Monnam(mtmp)} tears through ${trap.madeby_u ? 'your' : 'a'} spider web!`);
deltrap(trap);
newsym(mtmp.mx, mtmp.my);
}
return mtmp.mtrapped ? Trap_Caught_Mon : Trap_Effect_Finished;
}
case STATUE_TRAP:
return Trap_Effect_Finished;
case MAGIC_TRAP:
if (!rn2(21))
return await trapeffect_selector_mon(mtmp, { ...trap, ttyp: FIRE_TRAP }, trflags);
return Trap_Effect_Finished;
case ANTI_MAGIC: {
if (!resists_magm(mtmp)) {
if (!mtmp.mcan) {
mtmp.mspec_used = (mtmp.mspec_used || 0) + c_d(2, 6);
if (in_sight) {
seetrap(trap);
await pline(`${Monnam(mtmp)} seems lethargic.`);
}
}
} else {
let dmgval2 = rnd(4);
if (passes_walls(mtmp.data))
dmgval2 = Math.trunc((dmgval2 + 3) / 4);
if (in_sight) seetrap(trap);
mtmp.mhp = (mtmp.mhp || 0) - dmgval2;
if (mtmp.mhp <= 0) {
await monkilled(mtmp, in_sight ? 'compression from an anti-magic field' : null, -10);
if (mtmp.mhp <= 0) trapkilled = true;
}
}
return trapkilled ? Trap_Killed_Mon : mtmp.mtrapped
? Trap_Caught_Mon : Trap_Effect_Finished;
}
case POLY_TRAP: {
if (wearing_iron_shoes(mtmp)) {
// iron shoes get polymorphed — simplified
} else if (resists_magm(mtmp)) {
// shieldeff
} else if (!resist(mtmp, WAND_CLASS, 0, NOTELL)) {
await newcham(mtmp, null, 0);
if (in_sight) seetrap(trap);
}
return Trap_Effect_Finished;
}
case LANDMINE: {
let damage = rnd(16);
if (wearing_iron_shoes(mtmp))
damage = Math.trunc((damage + 3) / 4);
if (m_in_air(mtmp)) {
if (rn2(3)) return Trap_Effect_Finished;
if (in_sight) {
await pline('The air currents set it off!');
}
} else if (in_sight) {
await pline(`KAABLAMM!!! ${Monnam(mtmp)} triggers ${trap.madeby_u ? 'your' : 'a'} land mine!`);
}
if (!in_sight && !Deaf())
await pline('Kaablamm! You hear an explosion in the distance!');
blow_up_landmine(trap);
mtmp.mhp = (mtmp.mhp || 0) - damage;
if (mtmp.mhp <= 0) {
trapkilled = true;
} else {
if (await mintrap(mtmp, trflags | FORCETRAP) === Trap_Killed_Mon)
trapkilled = true;
}
fill_pit(mtmp.mx, mtmp.my);
if (mtmp.mhp <= 0) trapkilled = true;
return trapkilled ? Trap_Killed_Mon : mtmp.mtrapped
? Trap_Caught_Mon : Trap_Effect_Finished;
}
case ROLLING_BOULDER_TRAP:
if (!m_in_air(mtmp)) {
newsym(mtmp.mx, mtmp.my);
if (in_sight)
await pline(`${Monnam(mtmp)} triggers a rolling boulder trap!`);
const launched = await launch_obj(BOULDER, trap.launch?.x, trap.launch?.y,
trap.launch2?.x, trap.launch2?.y, ROLL);
if (!launched) {
deltrap(trap);
newsym(mtmp.mx, mtmp.my);
} else {
if (in_sight) trap.tseen = true;
if (mtmp.mhp <= 0) trapkilled = true;
}
}
return trapkilled ? Trap_Killed_Mon : mtmp.mtrapped
? Trap_Caught_Mon : Trap_Effect_Finished;
case VIBRATING_SQUARE:
if (see_it && !Blind()) {
seetrap(trap);
if (in_sight) {
await You_see(`a strange vibration beneath ${mon_nam(mtmp)}.`);
} else {
await You_see('the ground vibrate in the distance.');
}
}
return Trap_Effect_Finished;
default:
return Trap_Effect_Finished;
}
}
// ============================================================================
// Hero trap effect implementations
// ============================================================================
// Arrow/dart trap — hero
// C ref: trap.c:1192 (arrow), 1251 (dart)
// RNG: rn2(15) empty check, t_missile creates object (mksobj RNG),
// rn2(6) dart poison
async function trapeffect_arrow_dart(trap, trflags) {
const isArrow = trap.ttyp === ARROW_TRAP;
const missileName = isArrow ? 'arrow' : 'little dart';
if (trap.once && trap.tseen && !rn2(15)) {
if (isArrow) {
await You_hear('a loud click!');
} else {
await You_hear('a soft click.');
}
deltrap(trap);
newsym(game.u.ux, game.u.uy);
return;
}
trap.once = true;
seetrap(trap);
if (isArrow) {
await pline('An arrow shoots out at you!');
} else {
await pline('A little dart shoots out at you!');
}
const oldumort = game.u.umortality;
let otmp = t_missile(isArrow ? ARROW : DART, trap);
if (!isArrow && !rn2(6))
otmp.opoisoned = 1;
if (game.u.usteed && !rn2(2) && steedintrap(trap, otmp)) {
return;
}
const otmpRef = [otmp];
// C ref: trap.c:1277 — midlog wrapper around thitu call
pushRngLogEntry('>thitu');
const hit = await thitu(isArrow ? 8 : 7, dmgval(otmp, game.youmonst), otmpRef, missileName);
pushRngLogEntry(`<thitu=${hit ? 1 : 0}`);
otmp = otmpRef[0];
if (hit) {
if (otmp) {
if (!isArrow && otmp.opoisoned) {
// Match trap.c: poison damage is suppressed to attrib-only if life-saving triggered.
await poisoned('dart', A_CON, 'little dart',
(game.u.umortality > oldumort) ? 0 : 10, true);
}
obfree(otmp, null);
}
} else if (otmp) {
place_object(otmp, game.u.ux, game.u.uy);
if (!Blind()) observe_object(otmp);
stackobj(otmp);
newsym(game.u.ux, game.u.uy);
}
}
// Rocktrap — hero
// C ref: trap.c:1323
// RNG: rn2(15) empty, d(2,6) damage, t_missile
async function trapeffect_rocktrap(trap, trflags) {
if (trap.once && trap.tseen && !rn2(15)) {
await pline(`A trap door in ${ceiling(game.u.ux, game.u.uy)} opens, but nothing falls out!`);
deltrap(trap);
newsym(game.u.ux, game.u.uy);
return;
}
const dmg = c_d(2, 6);
trap.once = true;
feeltrap(trap);
const otmp = t_missile(ROCK, trap);
place_object(otmp, game.u.ux, game.u.uy);
await pline(`A trap door in ${ceiling(game.u.ux, game.u.uy)} opens and a rock falls on your ${body_part(HEAD)}!`);
if (!Blind()) observe_object(otmp);
stackobj(otmp);
newsym(game.u.ux, game.u.uy);
await losehp(Maybe_Half_Phys(dmg), 'falling rock', KILLED_BY_AN);
exercise(A_STR, false);
}
// Squeaky board — hero
// C ref: trap.c:1402
// RNG: none for hero (just messages + wake monsters)
async function trapeffect_sqky_board(trap, trflags) {
const forcetrap = ((trflags & FORCETRAP) !== 0
|| (trflags & FAILEDUNTRAP) !== 0);
if ((Levitation() || Flying()) && !forcetrap) {
if (!Blind()) {
seetrap(trap);
if (Hallucination())
await You('notice a crease in the linoleum.');
else
await You('notice a loose board below you.');
}
} else {
seetrap(trap);
await pline(`A board beneath you ${Deaf() ? 'vibrates' : 'squeaks '}${Deaf() ? '' : trapnote(trap, false)}${Deaf() ? '' : ' loudly'}.`);
wake_nearby(false);
}
}
// Pit / spiked pit — hero
// C ref: trap.c:1824
// RNG: rn1(6,2) duration, rnd(10 or 6) damage, rn2(5) stumble msg,
// rnd(4/6/10) spike damage, rn2(6) poison
async function trapeffect_pit(trap, trflags) {
const ttype = trap.ttyp;
const spiked = ttype === SPIKED_PIT;
let relevant_spikes = spiked;
const plunged = (trflags & TOOKPLUNGE) !== 0;
const conj_pit = conjoined_pits(trap, t_at(game.u?.ux0, game.u?.uy0), true);
const adj_pit = adj_nonconjoined_pit(trap);
if (!Sokoban() && (Levitation() || (Flying() && !plunged)))
return;
feeltrap(trap);
if (!Sokoban() && is_clinger(game.u?.data) && !plunged) {
if (trap.tseen) {
await You(`see ${trap.madeby_u ? 'your' : 'a'} ${spiked ? 'spiked ' : ''}pit below you.`);
} else {
await pline(`${trap.madeby_u ? 'Your' : 'A'} pit ${spiked ? 'full of spikes ' : ''}opens up under you!`);
await You("don't fall in!");
}
return;
}
if (!Sokoban()) {
if (conj_pit) {
await You('move into an adjacent pit.');
} else if (adj_pit) {
await You(`stumble over debris${!rn2(5) ? ' between the pits' : ''}.`);
} else {
const verb = !plunged ? 'fall' : (Flying() ? 'dive' : 'plunge');
await You(`${verb} into ${trap.madeby_u ? 'your' : 'a'} pit!`);
}
}
if (relevant_spikes && wearing_iron_shoes(game.u)) {
relevant_spikes = false;
}
set_utrap(rn1(6, 2), TT_PIT);
if (!steedintrap(trap, null)) {
if (relevant_spikes) {
const dmg = rnd(conj_pit ? 4 : adj_pit ? 6 : 10);
await losehp(Maybe_Half_Phys(dmg), 'fell into a pit of iron spikes', NO_KILLER_PREFIX);
if (!rn2(6)) {
await poisoned('spikes', A_STR, 'fell onto a set of iron spikes', 8, false);
}
} else {
if (!conj_pit) {
const dmg = rnd(adj_pit ? 3 : 6);
await losehp(Maybe_Half_Phys(dmg),
plunged ? 'deliberately plunged into a pit' : 'fell into a pit',
NO_KILLER_PREFIX);
}
}
exercise(A_STR, false);
exercise(A_DEX, false);
}
// C ref: trap.c:1960 — vision limits change when hero falls into pit
game.vision_full_recalc = 1;
}
// Bear trap — hero
// C ref: trap.c:1478
// RNG: d(2,4) damage, rn1(4,4) duration, rn2(2) wounded leg side
async function trapeffect_bear_trap(trap, trflags) {
const forcetrap = ((trflags & FORCETRAP) !== 0
|| (trflags & FAILEDUNTRAP) !== 0);
const dmg = c_d(2, 4);
if ((Levitation() || Flying()) && !forcetrap)
return;
feeltrap(trap);
if (amorphous(game.u?.data) || is_whirly(game.u?.data)
|| unsolid(game.u?.data)) {
await pline(`${trap.madeby_u ? 'Your' : 'A'} bear trap closes harmlessly through you.`);
return;
}
if (game.u?.data?.msize !== undefined && game.u.data.msize <= MZ_SMALL) {
await pline(`${trap.madeby_u ? 'Your' : 'A'} bear trap closes harmlessly over you.`);
return;
}
set_utrap(rn1(4, 4), TT_BEARTRAP);
await pline(`${trap.madeby_u ? 'Your' : 'A'} bear trap closes on your ${body_part(FOOT)}!`);
if (game.u?.umonnum === PM_OWLBEAR || game.u?.umonnum === PM_BUGBEAR)
await You('howl in anger!');
if (!wearing_iron_shoes(game.u)) {
await set_wounded_legs(rn2(2) ? RIGHT_SIDE : LEFT_SIDE, rn1(10, 10));
await losehp(Maybe_Half_Phys(dmg), 'bear trap', KILLED_BY_AN);
}
exercise(A_DEX, false);
}
// Sleep gas trap — hero
// C ref: trap.c:1562
// RNG: rnd(25) sleep duration
async function trapeffect_slp_gas_trap(trap, trflags) {
seetrap(trap);
if (Sleep_resistance() || breathless(game.u?.data)) {
await You('are enveloped in a cloud of gas!');
} else {
await pline('A cloud of gas puts you to sleep!');
await fall_asleep(-rnd(25), true);
}
steedintrap(trap, null);
}
// Rust trap — hero
// C ref: trap.c:1594
// RNG: rn2(5) body part selection, rn2(3) gremlin split
async function trapeffect_rust_trap(trap, trflags) {
seetrap(trap);
const bodyCase = rn2(5);
switch (bodyCase) {
case 0:
await pline(`A gush of water hits you on the ${body_part(HEAD)}!`);
await water_damage(game.u?.uarmh, 'helmet', true);
break;
case 1:
await pline(`A gush of water hits your left ${body_part(ARM)}!`);
await water_damage(game.u?.uarms, 'shield', true);
await water_damage(game.u?.uarmg, 'gloves', true);
break;
case 2:
await pline(`A gush of water hits your right ${body_part(ARM)}!`);
await water_damage(game.u?.uwep, null, true);
await water_damage(game.u?.uarmg, 'gloves', true);
break;
default:
await pline('A gush of water hits you!');
if (game.u?.uarmc)
await water_damage(game.u.uarmc, 'cloak', true);
else if (game.u?.uarm)
await water_damage(game.u.uarm, 'armor', true);
else if (game.u?.uarmu)
await water_damage(game.u.uarmu, 'shirt', true);
break;
}
update_inventory();
if (game.u?.umonnum === PM_IRON_GOLEM) {
const dam = game.u?.mhmax || 1;
await You('are covered with rust!');
await losehp(Maybe_Half_Phys(dam), 'rusting away', KILLED_BY);
} else if (game.u?.umonnum === PM_GREMLIN && rn2(3)) {
// C: split_mon — TODO
}
}
// Fire trap — hero
// C ref: trap.c:1729 (dispatches to dofiretrap)
async function trapeffect_fire_trap(trap, trflags) {
seetrap(trap);
await dofiretrap(null);
}
// C ref: trap.c:4211 dofiretrap(box)
// RNG: d(2,4) damage, rn2(2) fire resistance, rn2(num+1) mhpmax reduction
async function dofiretrap(box) {
const see_it = !Blind();
const orig_dmg = c_d(2, 4);
let num = orig_dmg;
await pline(`A tower of flame ${box ? 'bursts' : 'erupts'} from ${the(box ? xname(box) : surface(game.u?.ux, game.u?.uy))}!`);
if (Fire_resistance()) {
shieldeff(game.u.ux, game.u.uy);
num = rn2(2);
} else if (Upolyd()) {
const idx = game.u?.umonnum;
let alt = 0;
if (idx === PM_PAPER_GOLEM) alt = game.u.mhmax || 1;
else if (idx === PM_STRAW_GOLEM) alt = Math.trunc((game.u.mhmax || 1) / 2);
else if (idx === PM_WOOD_GOLEM) alt = Math.trunc((game.u.mhmax || 1) / 4);
else if (idx === PM_LEATHER_GOLEM) alt = Math.trunc((game.u.mhmax || 1) / 8);
if (alt > num) num = alt;
if ((game.u.mhmax || 0) > 0) {
game.u.mhmax -= rn2(Math.min(game.u.mhmax, num + 1));
}
if (game.u.mh > game.u.mhmax) game.u.mh = game.u.mhmax;
} else {
num = c_d(2, 4);
if ((game.u.uhpmax || 0) > 1) {
game.u.uhpmax -= rn2(Math.min(game.u.uhpmax, num + 1));
if (game.u.uhpmax < 1) game.u.uhpmax = 1;
}
if (game.u.uhp > game.u.uhpmax) game.u.uhp = game.u.uhpmax;
}
if (!num) {
await You('are uninjured.');
} else {
await losehp(num, 'tower of flame', KILLED_BY_AN);
}
await burn_away_slime();
if (await burnarmor(game.u) || rn2(3)) {
await destroy_items(game.u, AD_FIRE, orig_dmg);
ignite_items(game.u?.invent);
}
if (!box && burn_floor_objects(game.u?.ux, game.u?.uy, see_it, true) && !see_it)
await You('smell paper burning.');
if (is_ice(game.u?.ux, game.u?.uy))
melt_ice(game.u?.ux, game.u?.uy, null);
}
// Hole / trapdoor — hero
// C ref: trap.c:2012
async function trapeffect_hole(trap, trflags) {
seetrap(trap);
await fall_through(true, (trflags & TOOKPLUNGE) !== 0);
}
// Teleport trap — hero
// C ref: trap.c:2069
async function trapeffect_telep(trap, trflags) {
seetrap(trap);
await tele_trap(trap);
}
// Level teleport — hero
// C ref: trap.c:2087
async function trapeffect_level_telep_hero(trap, trflags) {
seetrap(trap);
await level_tele_trap(trap, trflags);
}
// Web — hero
// C ref: trap.c:2105
// RNG: rn1 for duration based on strength, rnd(2) at high str
async function trapeffect_web(trap, trflags) {
const webmsgok = (trflags & NOWEBMSG) === 0;
const forcetrap = ((trflags & FORCETRAP) !== 0
|| (trflags & FAILEDUNTRAP) !== 0);
feeltrap(trap);
// Check if hero can pass through web
if (await mu_maybe_destroy_web(game.u, webmsgok, trap))
return;
if (webmaker(game.u?.data)) {
if (webmsgok)
await pline(trap.madeby_u ? 'You take a walk on your web.'
: 'There is a spider web here.');
return;
}
if (webmsgok) {
if (forcetrap) {
await You(`are caught by ${trap.madeby_u ? 'your' : 'a'} spider web!`);
} else {
await You(`stumble into ${trap.madeby_u ? 'your' : 'a'} spider web!`);
}
}
set_utrap(1, TT_WEB); // initial, adjusted below
// Duration based on strength
const str = ACURR(A_STR);
let tim;
if (str <= 3) tim = rn1(6, 6);
else if (str < 6) tim = rn1(6, 4);
else if (str < 9) tim = rn1(4, 4);
else if (str < 12) tim = rn1(4, 2);
else if (str < 15) tim = rn1(2, 2);
else if (str < 18) tim = rnd(2);
else if (str < 69) tim = 1;
else {
tim = 0;
if (webmsgok)
await You(`tear through ${trap.madeby_u ? 'your' : 'a'} web!`);
deltrap(trap);
newsym(game.u.ux, game.u.uy);
}
set_utrap(tim, TT_WEB);
}
// Statue trap — hero
// C ref: trap.c:2278
async function trapeffect_statue_trap(trap, trflags) {
await activate_statue_trap(trap, game.u.ux, game.u.uy, false);
}
// Magic trap — hero
// C ref: trap.c:2292
// RNG: rn2(30) explosion, rnd(10) explosion damage, rnd(20) fate dispatch
async function trapeffect_magic_trap(trap, trflags) {
seetrap(trap);
if (!rn2(30)) {
deltrap(trap);
newsym(game.u.ux, game.u.uy);
await You('are caught in a magical explosion!');
await losehp(rnd(10), 'magical explosion', KILLED_BY_AN);
await Your('body absorbs some of the magical energy!');
game.u.uen = (game.u.uenmax = (game.u.uenmax || 0) + 2);
if (game.u.uenmax > (game.u.uenpeak || 0))
game.u.uenpeak = game.u.uenmax;
return;
}
await domagictrap();
steedintrap(trap, null);
}
// C ref: trap.c:4297 domagictrap()
// RNG: rnd(20) fate, then fate-specific RNG
async function domagictrap() {
const fate = rnd(20);
if (fate < 10) {
// Create monsters
const cnt = rnd(4);
if (!resists_blnd(game.u)) {
await You('are momentarily blinded by a flash of light!');
const blindtime = rn1(5, 10);
await make_blinded(blindtime, false);
} else if (!Blind()) {
await You('see a flash of light!');
}
// Deafness
if (!Deaf()) {
await You_hear('a deafening roar!');
const deaftime = rn1(20, 30);
// C: incr_itimeout(&HDeaf, deaftime) — TODO
} else {
await You_feel('rankled.');
const deaftime = rn1(5, 15);
// C: incr_itimeout — TODO
}
for (let i = 0; i < cnt; i++) {
await makemon(null, game.u.ux, game.u.uy, NO_MM_FLAGS);
}
wake_nearto(game.u.ux, game.u.uy, 49); // 7*7
} else {
switch (fate) {
case 10:
// Nothing happens
break;
case 11:
// Toggle intrinsic invisibility
await You_hear('a low hum.');
if (!Invis()) {
if (!Blind())
await self_invis_message();
} else {
await You_feel(`a little more ${game.u?.hinvis ? 'obvious' : 'hidden'} now.`);
}
// C: HInvis toggle
if (game.u) {
game.u.hinvis = game.u.hinvis ? 0 : 1;
}
newsym(game.u.ux, game.u.uy);
break;
case 12:
// Fire
await dofiretrap(null);
break;
case 13:
await pline(`A shiver runs up and down your ${body_part(SPINE)}!`);
break;
case 14:
await You_hear(Hallucination() ? 'the moon howling at you.'
: 'distant howling.');
break;
case 15:
await You('suddenly yearn for your distant homeland.');
break;
case 16:
await Your('pack shakes violently!');
break;
case 17:
await You(Hallucination() ? 'smell hamburgers.' : 'smell charred flesh.');
break;
case 18:
await You_feel('tired.');
break;
case 19:
// Tame nearby monsters
await adjattrib(A_CHA, 1, false);
for (let i = -1; i <= 1; i++) {
for (let j = -1; j <= 1; j++) {
if (!isok(game.u.ux + i, game.u.uy + j)) continue;
const mtmp = m_at(game.u.ux + i, game.u.uy + j);
if (mtmp) await tamedog(mtmp, null, true);
}
}
break;
case 20:
// Uncurse stuff — simplified
// C: seffects with SPE_REMOVE_CURSE pseudo-object
break;
default:
break;
}
}
}
// Anti-magic field — hero
// C ref: trap.c:2322
// RNG: rnd(4) base damage (multiple), d(2,6) drain, rnd(drain/2) max drain
async function trapeffect_anti_magic(trap, trflags) {
seetrap(trap);
if (Antimagic()) {
let dmgval2 = rnd(4);
if (Half_physical_damage() || Half_spell_damage())
dmgval2 += rnd(4);
if (Passes_walls())
dmgval2 = Math.trunc((dmgval2 + 3) / 4);
const hp = Upolyd() ? (game.u?.mh || 0) : (game.u?.uhp || 0);
await You_feel(dmgval2 >= hp ? 'unbearably torpid!'
: (dmgval2 >= Math.trunc(hp / 4)) ? 'very lethargic.'
: 'sluggish.');
await losehp(dmgval2, 'anti-magic implosion', KILLED_BY_AN);
}
const drainamt = c_d(2, 6);
const halfd = rnd(Math.trunc(drainamt / 2) || 1);
let exclaim_it = false;
if ((game.u?.uenmax || 0) > drainamt) {
game.u.uenmax -= halfd;
exclaim_it = true;
}
await drain_en(drainamt - (exclaim_it ? halfd : 0), exclaim_it);
}
// Polymorph trap — hero
// C ref: trap.c:2452
// RNG: none directly (polyself has its own RNG)
async function trapeffect_poly_trap(trap, trflags) {
seetrap(trap);
await You('step onto a polymorph trap!');
if (Antimagic() || Unchanging()) {
shieldeff(game.u.ux, game.u.uy);
await You_feel('momentarily different.');
} else {
steedintrap(trap, null);
deltrap(trap);
newsym(game.u.ux, game.u.uy);
await You_feel('a change coming over you.');
await polyself(0);
}
}
// Land mine — hero
// C ref: trap.c:2529
// RNG: rnd(16) damage, rn2(3) levitation discover, rn2(3) levitation trigger,
// rn1(35,41) leg wounds x2
async function trapeffect_landmine(trap, trflags) {
let damage = rnd(16);
if (wearing_iron_shoes(game.u))
damage = Math.trunc((damage + 3) / 4);
const already_seen = trap.tseen;
const forcetrap = ((trflags & FORCETRAP) !== 0
|| (trflags & FAILEDUNTRAP) !== 0);
if ((Levitation() || Flying()) && !forcetrap) {
if (!already_seen && rn2(3))
return;
feeltrap(trap);
await pline(`${already_seen ? 'There is' : 'You discover'} ${trap.madeby_u ? 'the trigger of your mine' : 'a trigger'} in a pile of soil below you.`);
if (already_seen && rn2(3))
return;
await pline('KAABLAMM!!! The air currents set it off!');
} else {
feeltrap(trap);
await pline(`KAABLAMM!!! You triggered ${trap.madeby_u ? 'your' : 'a'} land mine!`);
await set_wounded_legs(LEFT_SIDE, rn1(35, 41));
await set_wounded_legs(RIGHT_SIDE, rn1(35, 41));
exercise(A_DEX, false);
}
// Convert to pit before losehp
trap.ttyp = PIT;
trap.madeby_u = false;
await losehp(Maybe_Half_Phys(damage), 'land mine', KILLED_BY_AN);
blow_up_landmine(trap);
newsym(game.u.ux, game.u.uy);
// Recursive fall into pit
const newTrap = t_at(game.u.ux, game.u.uy);
if (newTrap)
await dotrap(newTrap, RECURSIVETRAP);
fill_pit(game.u.ux, game.u.uy);
}
// Rolling boulder trap — hero
// C ref: trap.c:2663
// RNG: none directly (launch_obj has its own)
async function trapeffect_rolling_boulder_trap(trap, trflags) {
const style = ROLL | (trap.tseen ? LAUNCH_KNOWN : 0);
feeltrap(trap);
await pline(`${!Deaf() ? 'Click! ' : ''}You trigger a rolling boulder trap!`);
if (!await launch_obj(BOULDER, trap.launch?.x, trap.launch?.y,
trap.launch2?.x, trap.launch2?.y, style)) {
deltrap(trap);
newsym(game.u.ux, game.u.uy);
await pline('Fortunately for you, no boulder was released.');
}
}
// Magic portal — hero
// C ref: trap.c:2711
async function trapeffect_magic_portal_hero(trap, trflags) {
feeltrap(trap);
await domagicportal(trap);
}
// Vibrating square — hero
// C ref: trap.c:2726
async function trapeffect_vibrating_square(trap, trflags) {
feeltrap(trap);
// Messages handled elsewhere; trap symbol marks the square
}
// ── instapetrify: instant petrification ──
// C ref: trap.c:3822
export async function instapetrify(str) {
if (Stone_resistance()) return;
await urgent_pline('You turn to stone...');
if (!game.killer) game.killer = {};
game.killer.format = KILLED_BY;
game.killer.name = str || '';
await done(STONING);
}
// ── minstapetrify: monster instant petrification ──
// C ref: trap.c:3835
export function minstapetrify(mon, _byplayer) {
if (!mon) return;
if (mon.data && (mon.data.mresists & 0x80)) return; // MR_STONE
mon.dead = true;
mon.mhp = 0;
}
// C ref: trap.c:6200 — cnv_trap_obj (convert trap to object)
export function cnv_trap_obj(otyp, qty, ttmp, _flag) {
delfloortrap(ttmp);
}
// ── count_traps — count traps of a given type ──
// C ref: trap.c:6494
export function count_traps(ttyp) {
let count = 0;
for (const t of (game.level?.traps || [])) {
if (t.ttyp === ttyp) count++;
}
return count;
}
// ── uteetering_at_seen_pit — hero on edge of a seen pit? ──
// C ref: trap.c:6626
export function uteetering_at_seen_pit(trap) {
return (trap && is_pit(trap.ttyp) && trap.tseen
&& (!game.u?.utrap || game.u?.utraptype !== TT_PIT));
}
// ── uescaped_shaft — hero escaped from shaft? ──
// C ref: trap.c:6638
export function uescaped_shaft(trap) {
return (trap && is_hole(trap.ttyp) && trap.tseen
&& (!game.u?.utrap || game.u?.utraptype !== TT_PIT));
}
// ── trap_sanity_check ──
// C ref: trap.c:7173
export function trap_sanity_check() {
for (const t of (game.level?.traps || [])) {
if (!isok(t.tx, t.ty)) {
// impossible: trap sanity location
}
if (t.ttyp <= 0 || t.ttyp >= 24) { // TRAPNUM
// impossible: trap sanity type
}
}
}
// ============================================================================
// maketrap / deltrap + helpers
// C ref: trap.c
// ============================================================================
function can_fall_thru(lev) {
const dnum = lev?.dnum ?? 0;
const dlevel = lev?.dlevel ?? 1;
const dungeon = game.dungeons?.[dnum];
const bottom = dungeon?.num_dunlevs ?? dlevel;
return dlevel < bottom;
}
function hole_destination(dst) {
const uz = game.u?.uz ?? { dnum: 0, dlevel: 1 };
const dungeon = game.dungeons?.[uz.dnum];
const bottom = dungeon?.num_dunlevs ?? uz.dlevel;
dst.dnum = uz.dnum;
dst.dlevel = uz.dlevel;
while (dst.dlevel < bottom) {
dst.dlevel++;
if (rn2(4))
break;
}
}
function pool_or_lava_at(x, y) {
const typ = game.level?.at?.(x, y)?.typ;
return typ === POOL || typ === MOAT || typ === WATER || typ === LAVAPOOL;
}
function closed_door_at(x, y) {
const loc = game.level?.at?.(x, y);
if (!loc) return false;
if (loc.typ !== DOOR) return false;
const mask = loc.doormask ?? 0;
return (mask & (D_CLOSED | D_LOCKED)) !== 0;
}
function isclearpath(cc, distance, dx, dy) {
let x = cc.x;
let y = cc.y;
while (distance-- > 0) {
x += dx;
y += dy;
if (!isok(x, y)) return false;
const typ = game.level?.at?.(x, y)?.typ;
if (typ == null || !ZAP_POS(typ) || closed_door_at(x, y)) return false;
const t = game.level?.trapAt?.(x, y) || null;
if (t && (is_pit(t.ttyp) || is_hole(t.ttyp) || is_xport(t.ttyp))) {
return false;
}
}
cc.x = x;
cc.y = y;
return true;
}
// C ref: trap.c find_random_launch_coord()
function find_random_launch_coord(ttmp, cc) {
if (!ttmp || !cc) return false;
const x = ttmp.tx;
const y = ttmp.ty;
let mindist = (ttmp.ttyp === ROLLING_BOULDER_TRAP) ? 2 : 4;
let distance = rn2(5) + 4; // rn1(5,4)
let tmp = rn2(N_DIRS);
let trycount = 0;
while (distance >= mindist) {
const dx = xdir[tmp];
const dy = ydir[tmp];
cc.x = x;
cc.y = y;
let success;
if (ttmp.ttyp === ROLLING_BOULDER_TRAP
&& pool_or_lava_at(x + distance * dx, y + distance * dy)) {
success = false;
} else {
success = isclearpath(cc, distance, dx, dy);
}
if (ttmp.ttyp === ROLLING_BOULDER_TRAP) {
const back = { x, y };
const successOther = isclearpath(back, distance, -dx, -dy);
if (!successOther) success = false;
}
if (success) return true;
if (++tmp > 7) tmp = 0;
if ((++trycount % N_DIRS) === 0) distance--;
}
return false;
}
// C ref: trap.c:3637 mkroll_launch()
function mkroll_launch(ttmp, x, y, otyp, ocount) {
const cc = { x: 0, y: 0 };
const success = find_random_launch_coord(ttmp, cc);
if (!success) {
// Create trap without ammo; launch point stays at trap.
cc.x = x;
cc.y = y;
} else {
const otmp = mksobj(otyp, true, false);
if (otmp) {
otmp.quan = ocount;
otmp.owt = weight(otmp);
place_object(otmp, cc.x, cc.y);
stackobj(otmp);
}
}
ttmp.launch = { x: cc.x, y: cc.y };
if (ttmp.ttyp === ROLLING_BOULDER_TRAP) {
ttmp.launch2 = { x: x - (cc.x - x), y: y - (cc.y - y) };
} else {
ttmp.launch_otyp = otyp;
}
newsym(ttmp.launch.x, ttmp.launch.y);
return 1;
}
// C ref: trap.c:3080 choose_trapnote()
// C ref: trap.c:3060 trapnote — get note name for squeaky board
const TRAPNOTE_NAMES = [
'C note', 'D flat', 'D note', 'E flat',
'E note', 'F note', 'F sharp', 'G note',
'G sharp', 'A note', 'B flat', 'B note',
];
function trapnote(trap, noprefix) {
const tn = TRAPNOTE_NAMES[trap.tnote] || 'C note';
if (noprefix) return tn;
// C ref: objnam.c:2113-2115 just_an — single-letter-before-space case
// "aefhilmnosx" get "an" (pronounced with vowel sounds)
const c0 = tn[0].toLowerCase();
const prefix = 'aefhilmnosx'.includes(c0) ? 'an ' : 'a ';
return prefix + tn;
}
function choose_trapnote(ttmp) {
const tavail = new Array(12).fill(0);
const tpick = [];
for (const t of (game.level?.traps || [])) {
if (t.ttyp === SQKY_BOARD && t !== ttmp)
tavail[t.tnote || 0] = 1;
}
for (let k = 0; k < 12; k++) {
if (tavail[k] === 0) tpick.push(k);
}
return tpick.length > 0 ? tpick[rn2(tpick.length)] : rn2(12);
}
// C ref: trap.c:391 mk_trap_statue — create a "living" statue for STATUE_TRAP
async function mk_trap_statue(x, y) {
let trycount = 10;
let mptr;
do {
mptr = mons[rndmonnum_adj(3, 6)];
} while (--trycount > 0 && is_unicorn(mptr)
&& Math.sign(game.u?.ualign?.type ?? 0) === Math.sign(mptr.maligntyp ?? 0));
const statue = mkcorpstat(STATUE, null, mptr, x, y, CORPSTAT_NONE);
if (!statue) return;
const mtmp = await makemon(mons[statue.corpsenm], 0, 0,
MM_NOCOUNTBIRTH | MM_NOMSG);
if (!mtmp) return;
while (mtmp.minvent) {
const otmp = mtmp.minvent;
otmp.owornmask = 0;
obj_extract_self(otmp);
add_to_container(statue, otmp);
}
statue.owt = weight(statue);
mongone(mtmp);
// Remove dead temp monster from fmon chain immediately.
// C's dmonsfree would do this later, but mapstate captures happen first.
let removed = false;
if (game.fmon === mtmp) {
game.fmon = mtmp.nmon || null;
removed = true;
} else {
for (let prev = game.fmon; prev; prev = prev.nmon) {
if (prev.nmon === mtmp) {
prev.nmon = mtmp.nmon || null;
removed = true;
break;
}
}
}
// Also check level.monsters array
if (game.level?.monsters) {
const idx = game.level.monsters.indexOf(mtmp);
if (idx >= 0) game.level.monsters.splice(idx, 1);
}
}
// C ref: trap.c — maketrap()
// Event: ^trap[ttyp,x,y]
export async function maketrap(x, y, typ, options = null) {
const suppressEvent = !!options?.suppressEvent;
if (typ === TRAPPED_DOOR || typ === TRAPPED_CHEST) {
return null;
}
const loc = levl(x, y);
if (!loc) return null;
// C ref: trap.c:467-490 — reject or overwrite existing trap placement.
let trap = t_at(x, y);
const oldplace = !!trap;
if (trap) {
if (undestroyable_trap(trap.ttyp)) return null;
if (game.u?.utrap && game.u?.ux === x && game.u?.uy === y) {
if ((game.u.utraptype === TT_BEARTRAP && typ !== BEAR_TRAP)
|| (game.u.utraptype === TT_WEB && typ !== WEB)
|| (game.u.utraptype === TT_PIT && !is_pit(typ))
|| (game.u.utraptype === TT_LAVA && game.level?.at(x, y)?.typ !== LAVAPOOL)) {
await reset_utrap(false);
}
}
} else {
const isPoolOrLava = (loc.typ === POOL || loc.typ === MOAT
|| loc.typ === WATER || loc.typ === LAVAPOOL);
const canOverwriteTerrain = (game.iflags?.debug_overwrite_stairs
|| (loc.typ !== LADDER && loc.typ !== STAIRS));
if (!canOverwriteTerrain
|| isPoolOrLava
|| (IS_FURNITURE(loc.typ) && (typ !== PIT && typ !== HOLE))
|| (loc.typ === DRAWBRIDGE_UP && typ === MAGIC_PORTAL)
|| (IS_AIR(loc.typ) && typ !== MAGIC_PORTAL)
|| (typ === LEVEL_TELEP && Is_knox_level(game.u?.uz))) {
return null;
}
trap = {
tx: x, ty: y,
ntrap: null,
};
}
// C ref: trap.c:496+ — [re]initialize trap fields except coordinates.
trap.ttyp = typ;
// C ref: trap.c:502 — unhideable_trap(HOLE) makes holes always visible
trap.tseen = (typ === HOLE);
trap.once = false;
trap.madeby_u = false;
trap.dst = { dnum: -1, dlevel: -1 };
trap.launch = { x: 0, y: 0 };
if (typ === SQKY_BOARD) {
trap.tnote = choose_trapnote(trap);
}
if (typ === STATUE_TRAP) {
await mk_trap_statue(x, y);
}
if (typ === ROLLING_BOULDER_TRAP) {
mkroll_launch(trap, x, y, BOULDER, 1);
}
// C ref: trap.c:522 — hole_destination called unconditionally for HOLE/TRAPDOOR
if (typ === HOLE || typ === TRAPDOOR)
hole_destination(trap.dst);
if (game.level && !oldplace) {
game.level.traps.push(trap);
}
if (!suppressEvent) pushRngLogEntry(`^trap[${typ},${x},${y}]`);
return trap;
}
// C ref: trap.c — deltrap()
// Event: ^deltrap[ttyp,x,y]
export function deltrap(trap) {
if (!trap) return;
pushRngLogEntry(`^dtrap[${trap.ttyp},${trap.tx},${trap.ty}]`);
if (game.level) {
const idx = game.level.traps.indexOf(trap);
if (idx >= 0) game.level.traps.splice(idx, 1);
}
}
// ── could_untrap — preliminary checks for dountrap ──
// C ref: trap.c:5235
export async function could_untrap(verbosely, check_floor) {
const u = game.u;
let buf = '';
if (near_capacity() >= HVY_ENCUMBER) {
buf = "You're too strained to do that.";
} else if ((nohands(game.youmonst?.data) && !webmaker(game.youmonst?.data))
|| !game.youmonst?.data?.mmove) {
buf = 'And just how do you expect to do that?';
} else if (u.ustuck && sticks_fn(game.youmonst?.data)) {
buf = `You'll have to let go of ${mon_nam(u.ustuck)} first.`;
} else if (u.ustuck || (welded_fn(game.u.uwep) && bimanual_fn(game.u.uwep))) {
buf = `Your ${makeplural(body_part(HAND))} seem to be too busy for that.`;
} else if (check_floor && !can_reach_floor(false)) {
buf = `You can't reach the ${surface(u.ux, u.uy)}.`;
}
if (buf) {
if (verbosely) await pline(buf);
return 0;
}
return 1;
}
// sticks_fn, welded_fn, bimanual_fn: imported at top from mondata/wield/hacklib
// ── untrap_prob — chance of disabling trap ──
// C ref: trap.c:5266
function untrap_prob(ttmp) {
let chance = 3;
if (ttmp.ttyp === WEB) {
if (!webmaker(game.youmonst?.data))
chance = 7;
}
if (Hallucination() || game.u.uconfused) chance++;
if (Blind()) chance++;
if (game.u.ustun) chance += 2;
if (Fumbling()) chance *= 2;
if (ttmp.madeby_u) chance--;
if (Role_if(PM_RANGER) && ttmp.ttyp === BEAR_TRAP && chance <= 3)
return 0;
if (Role_if(PM_ROGUE)) {
if (rn2(2 * MAXULEV) < game.u.ulevel) chance--;
if (game.u.uhave?.questart && chance > 1) chance--;
} else if (Role_if(PM_RANGER) && chance > 1) {
chance--;
}
if (chance < 1) chance = 1;
return rn2(chance);
}
// ── dountrap — the #untrap command ──
// C ref: trap.c:5226
export async function dountrap() {
if (!(await could_untrap(true, false)))
return ECMD_OK;
return (await untrap(false, 0, 0, null)) ? 1 : ECMD_OK;
}
// ── untrap — the main untrap logic ──
// C ref: trap.c:5826 — simplified port
// Full untrap handles traps, containers, doors
async function untrap(force, rx, ry, container) {
const u = game.u;
const g = game;
let x, y;
const confused = !!(Hallucination() || u.uconfused);
if (!force && has_magic_key())
force = true;
if (!rx && !container) {
if (!(await getdir(null)))
return 0;
x = u.ux + u.dx;
y = u.uy + u.dy;
} else {
if (container) {
// TODO: untrap_box
await pline('You cannot disarm that container.');
return 0;
}
x = rx; y = ry;
}
if (!isok(x, y)) {
await pline_The('perils lurking there are beyond your grasp.');
return 0;
}
let ttmp = t_at(x, y);
if (ttmp && !ttmp.tseen) ttmp = null;
const trapdescr = ttmp ? trapname(ttmp.ttyp, false) : null;
const here = u_at(x, y);
// check for floor trap
const deal_with_floor_trap = can_reach_floor(false);
if (deal_with_floor_trap && ttmp) {
const the_trap = the(trapdescr);
if (u.utrap) {
await You(`cannot deal with ${the_trap} while trapped${u_at(x, y) ? ' in it' : ''}!`);
return 1;
}
const mtmp = m_at(x, y);
if (mtmp && (M_AP_TYPE(mtmp) === M_AP_FURNITURE || M_AP_TYPE(mtmp) === M_AP_OBJECT)) {
await stumble_onto_mimic(mtmp);
return 1;
}
// attempt to disarm the trap
switch (ttmp.ttyp) {
case BEAR_TRAP:
case WEB:
case LANDMINE:
case SQKY_BOARD:
case DART_TRAP:
case ARROW_TRAP:
// simplified disarm attempt
if (untrap_prob(ttmp)) {
await You(`fail to disarm ${the_trap}.`);
if (ttmp.ttyp !== WEB && !rn2(3)) {
await pline('Whoops...');
}
return 1;
}
await You(`disarm ${the_trap}.`);
// simplified: just remove the trap (full port would convert to objects)
deltrap(ttmp);
return 1;
case PIT:
case SPIKED_PIT:
if (here) {
await You('are already on the edge of the pit.');
return 0;
}
if (!m_at(x, y)) {
await pline('Try filling the pit instead.');
return 0;
}
// help_monster_out — TODO
return 0;
default:
await You('cannot disable %s trap.', !here ? 'that' : 'this');
return 0;
}
}
// door handling
const lv = levl(x, y);
if (!lv || !IS_DOOR(lv.typ)) {
if (!ttmp) await You('know of no traps there.');
return 0;
}
switch (lv.doormask) {
case D_NODOOR:
await You(`${Blind() ? 'feel' : 'see'} no door there.`);
return 0;
case 0x04: /* D_ISOPEN */
await pline('This door is safely open.');
return 0;
case 0x20: /* D_BROKEN */
await pline('This door is broken.');
return 0;
}
if (((lv.doormask & D_TRAPPED) !== 0
&& (force || (!confused && rn2(MAXULEV - u.ulevel + 11) < 10)))
|| (!force && confused && !rn2(3))) {
await You('find a trap on the door!');
exercise(A_WIS, true);
const ans = await ynq('Disarm it?');
if (ans !== 'y') return 1;
if (lv.doormask & D_TRAPPED) {
const ch = 15 + (Role_if(PM_ROGUE) ? u.ulevel * 3 : u.ulevel);
exercise(A_DEX, true);
if (!force && (confused || Fumbling()
|| rnd(75 + level_difficulty() / 2) > ch)) {
await You('set it off!');
await b_trapped('door', FINGER);
lv.doormask = D_NODOOR;
unblock_point(x, y);
newsym(x, y);
if (in_rooms(x, y, SHOPBASE).length > 0)
add_damage(x, y, 0);
} else {
await You('disarm it!');
lv.doormask &= ~D_TRAPPED;
more_experienced(8, 0);
await newexplevel();
}
} else {
await pline('This door was not trapped.');
}
return 1;
} else {
await You('find no traps on the door.');
return 1;
}
}
// stub helpers for untrap
// C ref: artifact.c:2790 — has_magic_key: check if hero carries Master Key of Thievery
function has_magic_key() {
const key_otyp = artilist[ART_MASTER_KEY_OF_THIEVERY].otyp;
for (let o = nxtobj(game.invent, key_otyp, false); o; o = nxtobj(o.nobj, key_otyp, false)) {
if (o.oartifact === ART_MASTER_KEY_OF_THIEVERY)
return o;
}
return null;
}
// cnv_trap_obj already defined above at line ~2486
// mondead / mondied moved to mon.js (canonical C location: mon.c)
// C ref: trap.c:5353 — whether movement is "into" vs "onto" a trap tile.
export function into_vs_onto(traptype) {
switch (traptype) {
case BEAR_TRAP:
case PIT:
case SPIKED_PIT:
case HOLE:
case TELEP_TRAP:
case LEVEL_TELEP:
case MAGIC_PORTAL:
case WEB:
return true;
default:
return false;
}
}
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