Press n or j to go to the next uncovered block, b, p or k for the previous block.
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22x 22x 22x 22x 22x 685x 762x 221x 221x 221x 56x 56x 56x 56x 56x 221x 762x 73x 73x 319124x 319124x 319124x 319124x 319124x 319124x 319124x 319124x 319124x 318377x 319124x 73x 221x 221x 221x 221x 221x 221x 221x 221x 16796x 747x 747x 221x 73x 73x 73x 223x 223x 223x 223x 223x 219x 219x 219x 219x 219x 219x 219x 219x 219x 219x 219x 110x 110x 219x 109x 223x 223x 223x 223x 109x 109x 109x 109x 109x 109x 13x 13x 101x 109x 109x 223x 8284x 100756x 100756x 100756x 100756x 27496x 27496x 27496x 100756x 3270x 3270x 3270x 69990x 69990x 69990x 100756x 100756x 100756x 44370x 44370x 922x 922x 922x 922x 922x 922x 302x 908x 620x 620x 922x 44370x 44370x 203x 203x 401x 401x 401x 49x 398x 352x 352x 352x 110x 338x 242x 242x 352x 401x 401x 203x 44370x 100756x 100756x 223x 73x 73x 298x 298x 298x 298x 1670x 35070x 35070x 3422x 3422x 3422x 3422x 35070x 1670x 298x 298x 298x 298x 298x 1657x 34797x 34797x 3356x 3356x 3356x 3356x 34797x 1657x 298x 298x 298x 298x 298x 697x 46713x 46713x 11878x 11878x 11878x 11878x 46713x 697x 298x 298x 298x 298x 504x 33327x 33327x 12076x 12076x 12076x 12076x 33327x 504x 298x 298x 298x 73x 225x 225x 225x 223x 223x 225x 17840x 374640x 374640x 374640x 374640x 83327x 83327x 83327x 374640x 17840x 225x 73x 73x 225x 225x 225x 223x 223x 225x 225x 225x 225x 225x 225x 16x 16x 225x 225x 108x 108x 821x 821x 108x 225x 225x 225x 225x 1178x 1178x 1178x 225x | // mklev.js — Level generation (port of mklev.c)
// This is the master level generation module. makelevel() orchestrates:
// 1. clear_level_structures() — reset the map
// 2. makerooms() — place rooms using rectangle allocator
// 3. generate_stairs() — up/down stairs
// 4. makecorridors() → join() — connect rooms with corridors
// 5. make_niches() — wall niches
// 6. vault creation
// 7. special room designation (shop, zoo, temple, etc.)
// 8. fill_ordinary_room() — populate rooms with items/monsters/traps
//
// RNG calls are pervasive throughout — every room dimension, position,
// corridor path, door placement, item/monster creation, and trap placement
// involves RNG.
import { game } from './gstate.js';
import { stairway_add } from './stairs.js';
import { set_wall_state } from './display.js';
import { A_CHAOTIC, A_LAWFUL, A_NEUTRAL, A_WIS, Align2amask, ALTAR, ANTHOLE, ARROW_TRAP, BARRACKS, BEEHIVE, BLCORNER, BR_NO_END1, BR_NO_END2, BR_PORTAL, BRCORNER, COCKNEST, COLNO, CORPSTAT_FEMALE, CORPSTAT_INIT, CORR, COURT, CROSSWALL, D_CLOSED, D_ISOPEN, D_LOCKED, D_NODOOR, D_TRAPPED, DART_TRAP, DBWALL, DIR_180, DIR_E, DIR_N, DIR_S, DIR_W, DOOR, DUST, FIRE_TRAP, FOUNTAIN, G_GONE, GRAVE, HEADSTONE, HOLE, HWALL, ICE, IRONBARS, IS_DOOR, Is_earthlevel, IS_FURNITURE, is_hole, IS_OBSTRUCTED, is_pit, IS_POOL, Is_rogue_level, IS_STWALL, IS_WALL, isok, Is_knox_level, LADDER, LANDMINE, LAVAPOOL, LAVAWALL, LEPREHALL, LEVEL_TELEP, MAGIC_PORTAL, MAGIC_TRAP, MARK, MAX_SUBROOMS, MAX_TYPE, MAXDUNGEON, MAXLEVEL, MAXNROFROOMS, MM_NOGRP, MOAT, MORGUE, OROOM, PIT, POLY_TRAP, POOL, ROCKTRAP, ROLLING_BOULDER_TRAP, ROOM, ROOMOFFSET, ROWNO, RUST_TRAP, SCORR, SDOOR, SHARED, SHOPBASE, SINK, SLP_GAS_TRAP, SPACE_POS, SPIKED_PIT, SQKY_BOARD, STAIRS, STATUE_TRAP, STONE, SWAMP, TAINT_AGE, TDWALL, TELEP_TRAP, TEMPLE, THEMEROOM, TLCORNER, TLWALL, TRAPDOOR, TRAPPED_CHEST, TRAPPED_DOOR, TRCORNER, TRWALL, TUWALL, VAULT, VIBRATING_SQUARE, VWALL, W_NONDIGGABLE, WATER, WEB, XL_DOWN, XL_LEFT, XL_RIGHT, XL_UP, ZOO } from './const.js';
// DIR_180 — imported from const.js
// themeroom_maps.js was removed — map-type rooms go through themerms.js contents() callbacks
import { add_to_container, curse, dealloc_obj, mkcorpstat, mkgold, mkobj, mkobj_at, mksobj, mksobj_at, place_object, rndmonnum, sobj_at, weight } from './mkobj.js';
import { des_map, des_region, finalize_level, reset_des_coder, shuffle, splev_chr2typ } from './sp_lev.js';
import { stock_room } from './shknam.js';
import { in_rooms } from './shk.js';
import { In_endgame as in_endgame, In_mines, In_sokoban, Invocation_lev, is_rogue_level, Sokoban } from './macros.js';
import { stolen_booty, walkfrom, maze_remove_deadends } from './mkmaze.js';
import { Can_fall_thru } from './dbridge.js';
export { Sokoban };
// C ref: mklev.c:in_town
export function in_town(x, y) {
const lvl = game.level;
if (!lvl?.flags?.has_town)
return false;
let has_subrooms = false;
const rooms = lvl.rooms || [];
for (let i = 0; i < rooms.length; i++) {
const sroom = rooms[i];
if (!sroom || !(sroom.hx > 0))
break;
if ((sroom.nsubrooms || 0) > 0) {
has_subrooms = true;
if (insideTownRoom(sroom, x, y))
return true;
}
}
return !has_subrooms;
}
function insideTownRoom(croom, x, y) {
if (croom.irregular) {
const roomno = (croom.roomnoidx ?? game.level?.rooms?.indexOf(croom) ?? -1) + ROOMOFFSET;
const loc = game.level?.at(x, y);
return !!loc && !loc.edge && loc.roomno === roomno;
}
return x >= (croom.lx - 1) && x <= (croom.hx + 1)
&& y >= (croom.ly - 1) && y <= (croom.hy + 1);
}
// C ref: mklev.c:angry_guards
export function angry_guards(silent) {
// TODO: implement guard aggression
return 0;
}
// Direction deltas: index by DIR_* constant
// C ref: mklev.c uses xdir[]/ydir[] arrays
const xdir = [/*W*/-1, /*NW*/-1, /*N*/0, /*NE*/1, /*E*/1, /*SE*/1, /*S*/0, /*SW*/-1];
const ydir = [/*W*/0, /*NW*/-1, /*N*/-1, /*NE*/-1, /*E*/0, /*SE*/1, /*S*/1, /*SW*/1];
import { rn2, rnd, rn1, pushRngLogEntry } from './rng.js';
import { exercise } from './attrib.js';
import { init_rect, rnd_rect, get_rect, split_rects, get_rect_cnt } from './rect.js';
import { GameMap } from './game.js';
import { oinit } from './o_init.js';
import { themeroomMeta } from './themeroom_meta.js';
import { find_level } from './dungeon.js';
import { depth as depth_of_level } from './hacklib.js';
// themerms.js imported dynamically to avoid circular dependency issues
// import { themerooms_generate as themerms_generate } from './levels/themerms.js';
import { level_difficulty, makemon } from './makemon.js';
import { make_engr_at, make_grave, wipe_engr_at, wipeout_text, random_engraving } from './engrave.js';
import { distmin } from './hacklib.js';
// C ref: dungeon.c Is_branchlev() — check if current level has a branch
function is_branchlev() {
const g = game;
if (!g.branches) return null;
for (const br of g.branches) {
if (br && br.end1 &&
br.end1.dnum === (g.u?.uz?.dnum ?? 0) &&
br.end1.dlevel === (g.u?.uz?.dlevel ?? 1))
return br;
if (br && br.end2 &&
br.end2.dnum === (g.u?.uz?.dnum ?? 0) &&
br.end2.dlevel === (g.u?.uz?.dlevel ?? 1))
return br;
}
return null;
}
function on_level(a, b) {
return !!a && !!b && a.dnum === b.dnum && a.dlevel === b.dlevel;
}
function at_dgn_entrance(dnum) {
const uz = game.u?.uz;
if (!uz || dnum == null) return false;
for (const br of (game.branches || [])) {
if (br?.end2?.dnum !== dnum) continue;
if (on_level(uz, br.end1)) return true;
}
return false;
}
function find_knox_branch() {
const knox = game.knox_level;
if (!knox) return null;
for (const br of (game.branches || [])) {
if (on_level(br?.end1, knox) || on_level(br?.end2, knox)) return br;
}
return null;
}
function branch_sort_val(bp) {
const end1 = bp?.end1 ?? { dnum: 0, dlevel: 0 };
const end2 = bp?.end2 ?? { dnum: 0, dlevel: 0 };
return (((end1.dnum * (MAXLEVEL + 1) + end1.dlevel)
* (MAXDUNGEON + 1) * (MAXLEVEL + 1))
+ (end2.dnum * (MAXLEVEL + 1) + end2.dlevel));
}
// C ref: mklev.c:2624-2659 mk_knox_portal()
// Keep RNG gates and branch insertion/place ordering.
async function mk_knox_portal(x, y) {
const g = game;
const wizardMode = !!g.flags?.debug;
const br = find_knox_branch();
if (!br) return;
let source = null;
if (on_level(g.knox_level, br.end1)) {
source = br.end2;
} else {
// C: disallow Knox branch on a level with one branch already
if (is_branchlev()) return;
source = br.end1;
}
if (!source) return;
const ndgns = g.n_dgns ?? g.dungeons?.length ?? 0;
if (source.dnum < ndgns) return;
const gate = rn2(3);
if (gate && !wizardMode) return;
const uz = g.u?.uz;
const oracle = g.oracle_level;
const medusa = g.medusa_level;
const u_depth = depth_of_level(uz);
const medusa_depth = depth_of_level(medusa);
if (!(uz?.dnum === oracle?.dnum
&& !at_dgn_entrance(g.quest_dnum)
&& u_depth > 10
&& u_depth < medusa_depth)) {
return;
}
// C: *source = u.uz; insert_branch(br, TRUE)
source.dnum = uz.dnum;
source.dlevel = uz.dlevel;
const branches = g.branches || [];
const idx = branches.indexOf(br);
if (idx >= 0) {
branches.splice(idx, 1);
const val = branch_sort_val(br);
let insertAt = branches.length;
for (let i = 0; i < branches.length; i++) {
if (val <= branch_sort_val(branches[i])) {
insertAt = i;
break;
}
}
branches.splice(insertAt, 0, br);
}
await place_branch(br, x, y);
}
// C ref: mklev.c:1648-1663 find_branch_room()
// Finds a room for branch stairway placement.
// RNG: generate_stairs_find_room (rn2(good_count)) + somexyspace (rn1+rn1)
function find_branch_room(mp) {
const g = game;
if (g.level.nroom === 0) {
const mm = mazexy();
if (mm) {
mp.x = mm.x;
mp.y = mm.y;
}
return null;
}
const croom = generate_stairs_find_room();
if (croom && !somexyspace(croom, mp)) {
// impossible — can't place branch
}
return croom;
}
// C ref: mklev.c place_branch()
// RNG: find_branch_room → generate_stairs_find_room (rn2) + somexyspace (rn1+rn1)
async function place_branch(branchp, x = 0, y = 0) {
const g = game;
if (!branchp || g.made_branch) {
return;
}
const mp = { x, y };
if (!x) {
find_branch_room(mp);
}
const on_end1 = (branchp.end1?.dnum === g.u?.uz?.dnum
&& branchp.end1?.dlevel === g.u?.uz?.dlevel);
const make_stairs = on_end1
? branchp.type !== BR_NO_END1
: branchp.type !== BR_NO_END2;
const dest = on_end1 ? branchp.end2 : branchp.end1;
if (branchp.type === BR_PORTAL) {
const ttmp = await maketrap(mp.x, mp.y, MAGIC_PORTAL);
if (ttmp) {
if (g.flags?.debug_fuzzer && ((g.u?.ucamefrom?.dnum || 0) || (g.u?.ucamefrom?.dlevel || 0))) {
ttmp.dst.dnum = g.u.ucamefrom.dnum;
ttmp.dst.dlevel = g.u.ucamefrom.dlevel;
} else {
ttmp.dst.dnum = dest?.dnum ?? 0;
ttmp.dst.dlevel = dest?.dlevel ?? 0;
}
}
} else if (make_stairs && mp.x > 0) {
const goes_up = on_end1 ? !!branchp.end1_up : !branchp.end1_up;
const loc = g.level?.at(mp.x, mp.y);
if (loc) {
loc.typ = STAIRS;
loc.ladder = goes_up ? 1 : 2; // LA_UP, LA_DOWN
stairway_add(mp.x, mp.y, goes_up, false, dest || { dnum: 0, dlevel: 0 });
if (goes_up) {
if (g.level) g.level.upstair = { x: mp.x, y: mp.y };
} else {
if (g.level) g.level.dnstair = { x: mp.x, y: mp.y };
}
}
}
g.made_branch = true;
}
const FILL_NORMAL = 1;
import { ARMOR_CLASS, ARROW, BELL, BOULDER, BOW, CHEST, CORPSE, CRAM_RATION, DART, FAKE_AMULET_OF_YENDOR, FOOD_CLASS, FOOD_RATION, GEM_CLASS, GOLD_PIECE, KELP_FROND, LARGE_BOX, LEMBAS_WAFER, MACE, PLATE_MAIL, POT_EXTRA_HEALING, POT_GAIN_ENERGY, POT_HEALING, POT_SPEED, POTION_CLASS, RANDOM_CLASS, RING_CLASS, RING_MAIL, ROCK, SCR_CONFUSE_MONSTER, SCR_ENCHANT_ARMOR, SCR_ENCHANT_WEAPON, SCR_SCARE_MONSTER, SCR_TELEPORTATION, SCROLL_CLASS, SPBOOK_no_NOVEL, SPE_HEALING, STATUE, TALLOW_CANDLE, TOOL_CLASS, TWO_HANDED_SWORD, WAN_DIGGING, WAX_CANDLE, WEAPON_CLASS } from './objects.js';
import { mkclass } from './makemon.js';
import { mons, S_HUMAN, S_ZOMBIE, S_MUMMY } from './monsters.js';
import { antholemon, do_mkroom, fill_zoo, somex, somey, somexyspace } from './mkroom.js';
import {
PM_ELF, PM_HUMAN, PM_DWARF, PM_ORC, PM_GNOME,
PM_ARCHEOLOGIST, PM_WIZARD, PM_LEPRECHAUN, PM_KILLER_BEE,
PM_COCKATRICE, PM_GIANT_SPIDER, PM_MINOTAUR,
PM_GHOST, PM_SOLDIER, PM_SERGEANT, PM_LIEUTENANT, PM_CAPTAIN,
PM_SMALL_MIMIC, PM_LARGE_MIMIC, PM_GIANT_MIMIC, S_MIMIC,
} from './monsters.js';
// C ref: themerms.lua:890 is_eligible()
// Check if a themed room is eligible at the current difficulty.
// C ref: themerms.lua is_eligible(room, mkrm)
// During selection (mkrm=nil), only mindiff/maxdiff are checked.
// The eligible callback is only called when a specific room is being
// tested for a particular placement (mkrm ~= nil), not during selection.
function is_themeroom_eligible(room, difficulty) {
if (room.mindiff != null && difficulty < room.mindiff) return false;
if (room.maxdiff != null && difficulty > room.maxdiff) return false;
return true;
}
// C ref: themerms.lua:926 themerooms_generate()
// Reservoir sampling to pick one themed room. Each eligible room triggers
// an rn2(total_frequency) call.
async function themerooms_generate(difficulty) {
let pick = null;
let total_frequency = 0;
for (const meta of themeroomMeta.rooms) {
if (!is_themeroom_eligible(meta, difficulty)) continue;
const this_frequency = meta.frequency || 1;
total_frequency += this_frequency;
if (this_frequency > 0 && rn2(total_frequency) < this_frequency) {
pick = meta;
}
}
if (!pick) return false;
// C ref: mklev.c:412-416 — calls Lua themerooms[pick].contents() for ALL types.
// C does NOT distinguish map vs room body types — it always calls contents().
// The contents() callback calls des.map() or des.room() which handles
// placement, collision checks, and filler_region in C's exact call order.
const therms_entry = themerooms.find(t => t.name === pick.name);
if (therms_entry) {
game.in_mk_themerooms = true;
game.themeroom_failed = false;
try {
await therms_entry.contents();
return !game.themeroom_failed;
} finally {
game.in_mk_themerooms = false;
game.themeroom_failed = false;
}
}
// Fallback for rooms not in themerms.js (should not happen with complete port)
if (pick.bodyKind === 'map') return await build_themeroom_map(pick);
if (pick.bodyKind === 'room') return await build_themeroom_room(pick);
return create_room(-1, -1, -1, -1, -1, -1, OROOM, -1, true);
}
// Map dimensions for des.map() themed rooms (from themerms.lua)
const MAP_ROOM_DIMS = {
'L-shaped': [8, 8], 'L-shaped, rot 1': [8, 8],
'L-shaped, rot 2': [8, 8], 'L-shaped, rot 3': [8, 8],
'Blocked center': [11, 11],
'Circular, small': [7, 7], 'Circular, medium': [9, 9],
'Circular, big': [11, 11],
'T-shaped': [11, 8], 'T-shaped, rot 1': [8, 11],
'T-shaped, rot 2': [11, 8], 'T-shaped, rot 3': [8, 11],
'S-shaped': [8, 11], 'S-shaped, rot 1': [11, 8],
'Z-shaped': [8, 11], 'Z-shaped, rot 1': [11, 8],
'Cross': [11, 11], 'Four-leaf clover': [11, 11],
'Water-surrounded vault': [6, 6],
};
// C ref: sp_lev.c:6163 lspo_map() + filler_region
// When a themed room uses des.map(), the RNG pattern is:
// 1. rn2(100) @ build_room chance check
// 2. rn2(rect_w - map_w + 1) for x placement
// 3. rn2(rect_h - map_h + 1) for y placement
// 4. Possibly percent(30) for filler_region → rn2(100)
// 5. If filler: litstate_rnd → rnd(depth+1) + rn2(77)
async function build_themeroom_map(meta) {
game.in_mk_themerooms = true;
try {
// NOTE: map rooms do NOT go through build_room — no rn2(100) chance check.
// They use sp_lev.c lspo_map() directly.
const dims = MAP_ROOM_DIMS[meta.name];
if (!dims) {
return create_room(-1, -1, -1, -1, -1, -1, OROOM, -1, true);
}
const [mapW, mapH] = dims;
const mapData = null; // THEMEROOM_MAPS removed — map rooms go through themerms.js
const mapLines = (mapData?.map || '').split('\n');
// C ref: sp_lev.c:6147-6275 — themed room map placement with retry
// Place at random coords, check for collision, retry if overlapping.
let x, y;
let tryct = 0;
let failed = false;
do {
x = 1 + rn2(COLNO - 1 - mapW); // sp_lev.c:6154
y = rn2(ROWNO - mapH); // sp_lev.c:6164
// C ref: sp_lev.c:6246-6274 — collision check
// If map area overlaps non-STONE tiles, retry
let okPlacement = true;
for (let cy = y - 1; cy < Math.min(ROWNO, y + mapH) + 1 && okPlacement; cy++) {
for (let cx = x - 1; cx < Math.min(COLNO, x + mapW) + 1 && okPlacement; cx++) {
if (!isok(cx, cy)) {
okPlacement = false;
} else {
const loc = game.level?.at(cx, cy);
if (!loc) {
okPlacement = false;
} else if (cy < y || cy >= (y + mapH) || cx < x || cx >= (x + mapW)) {
// C: outside map interior, border must remain untouched STONE/NO_ROOM.
if (loc.typ !== STONE || loc.roomno !== 0) {
okPlacement = false;
}
} else {
// C: interior may overlap only if preexisting terrain is STONE or same mptyp.
const mapCh = mapLines[cy - y]?.[cx - x] ?? ' ';
const mptyp = splev_chr2typ(mapCh);
if (mptyp >= MAX_TYPE) {
continue; // see-through map marker
}
if ((loc.typ !== STONE && loc.typ !== mptyp) || loc.roomno !== 0) {
okPlacement = false;
}
}
}
}
}
if (okPlacement) break;
// C ref: sp_lev.c:6269 — tryct++ < 100 (post-increment) allows 101 total tries
if (tryct++ >= 100) { failed = true; break; }
} while (true);
if (failed) {
return false;
}
// Actually draw the map tiles on the level
if (mapData?.map) {
// C ref: lspo_map defaults lit to FALSE when not specified
// in the Lua table. Pass 0 (dark) to match.
await des_map(mapData.map, x, y, 0);
}
// Most map rooms call filler_region(x, y) which does:
// 1. percent(30) → rn2(100) for themed vs ordinary
// 2. des.region() → litstate_rnd(-1) — ALWAYS runs
const hasFiller = !meta.name.startsWith('Water'); // vault room has no filler
if (hasFiller) {
const fillType = rn2(100) < 30 ? THEMEROOM : OROOM;
let seed = Array.isArray(meta.fillSeed)
? { x: x + meta.fillSeed[0], y: y + meta.fillSeed[1] }
: null;
if (!seed) {
for (let my = 0; my < mapH && !seed; my++) {
for (let mx = 0; mx < mapW; mx++) {
if (mapLines[my]?.[mx] === '.') {
seed = { x: x + mx, y: y + my };
break;
}
}
}
}
if (!seed) {
for (let my = 0; my < mapH && !seed; my++) {
for (let mx = 0; mx < mapW; mx++) {
if (mapLines[my]?.[mx] === '#') {
seed = { x: x + mx, y: y + my };
break;
}
}
}
}
if (seed) {
const fillRoom = des_region(seed.x, seed.y, seed.x, seed.y, fillType, -1, true, FILL_NORMAL);
if (fillType === THEMEROOM && fillRoom) {
await themeroom_fill(fillRoom);
}
}
}
return true;
} finally {
game.in_mk_themerooms = false;
}
}
function map_themeroom_type(name) {
switch (name) {
case 'themed':
return THEMEROOM;
case 'ordinary':
default:
return OROOM;
}
}
// C ref: themerms.lua — rooms that compute dimensions via RNG before calling des.room().
// In Lua, arguments are fully evaluated before the function call, so rn2() calls for
// w and h happen BEFORE des.room()'s chance check (rn2(100) in build_room/sp_lev.c).
// These functions must be called in w-first, h-second order to match C.
const DYNAMIC_DIMS = {
'Mausoleum': () => ({ w: 5 + rn2(3)*2, h: 5 + rn2(3)*2 }),
'Nesting rooms': () => ({ w: 9 + rn2(4), h: 9 + rn2(4) }),
'Huge room with another room inside': () => ({ w: rn2(10)+11, h: rn2(5)+8 }),
};
async function build_themeroom_room(meta) {
game.in_mk_themerooms = true;
try {
// Compute dynamic dimensions BEFORE chance check to match C's arg evaluation order.
// In Lua, des.room({ w = rn2(...), h = rn2(...), ... }) evaluates rn2() for w and h
// before calling des.room(), which contains the rn2(100) chance check.
const dynDims = DYNAMIC_DIMS[meta.name]?.() ?? null;
const chance = 100;
const rtype = (chance <= 0 || rn2(100) < chance)
? map_themeroom_type(meta.roomType)
: OROOM;
const w = dynDims?.w ?? meta.w ?? -1;
const h = dynDims?.h ?? meta.h ?? -1;
const lit = meta.lit ?? -1;
const ok = create_room(-1, -1, w, h, -1, -1, rtype, lit, true);
if (ok) {
const aroom = game.level.rooms[game.level.nroom - 1];
if (aroom) {
aroom.needfill = (meta.filled === false || meta.filled === 0)
? 0 : FILL_NORMAL;
if (meta.roomType === 'themed') {
await themeroom_fill(aroom);
}
}
}
return ok;
} finally {
game.in_mk_themerooms = false;
}
}
// C ref: allmain.c:797 l_nhcore_init()
// Creates Lua state, loads nhcore.lua which loads nhlib.lua.
// nhlib.lua overrides math.random and shuffles align[] — 2 core RNG calls.
// Called from newgame() AFTER u_init_misc() and BEFORE mklev().
export function l_nhcore_init() {
// C nhlib.lua: align = {"law","neutral","chaos"}; shuffle(align)
// Preserve both RNG consumption and the resulting permutation.
const align = [A_LAWFUL, A_NEUTRAL, A_CHAOTIC];
for (let i = align.length; i > 1; i--) {
const j = rn2(i);
[align[i - 1], align[j]] = [align[j], align[i - 1]];
}
game.splev_align = align;
}
// NOTE: differs from canonical bones.js — local has explore/bones/debug checks + rn2(3) RNG consumption; canonical just returns 0
// C ref: bones.c:629 getbones()
// Checks for bones level.
// C gates (discover/bones option) run before rn2(3); in explore mode,
// C returns early and does not consume bones RNG here.
function getbones() {
const flags = game.flags || {};
// C: if (discover) return 0; where discover == flags.explore
if (flags.explore) return false;
// C: if (!flags.bones) return 0; default is enabled when unset
if (flags.bones === false) return false;
// C: if (rn2(3) && !wizard) return 0;
// In wizard mode, rn2(3) is called but result is ignored (always continue).
// In normal mode, 2/3 chance of skipping bones.
if (rn2(3) && !game.flags?.debug) return false;
// No bones files exist in our environment, so always return false.
return false;
}
// C ref: mklev.c:1567 mklev()
// Entry point for level generation. Called from newgame().
export async function mklev() {
const g = game;
// C: reseed_random(rn2) — reseeds PRNG (ISAAC64 auto-reseeds)
// C: init_mapseen(&u.uz)
// C: if (getbones()) return — skip if bones level loaded
if (getbones()) return;
g.in_mklev = true;
await makelevel();
recount_level_features();
level_finalize_topology();
g.in_mklev = false;
// C harness emits destination mapdump after each newly generated level.
// This must happen before goto_level() stair transit messaging.
const dnum = game.u?.uz?.dnum ?? 0;
const dlevel = game.u?.uz?.dlevel ?? 1;
const serial = ((game.mapdump_serial ?? 0) + 1);
game.mapdump_serial = serial;
pushRngLogEntry(`^mapdump[d${dnum}l${dlevel}_${String(serial).padStart(3, '0')}]`);
// C: reseed_random(rn2)
}
function recount_level_features() {
const lvl = game.level;
if (!lvl?.flags) return;
let nfountains = 0;
let nsinks = 0;
for (let y = 0; y < ROWNO; y++) {
for (let x = 1; x < COLNO; x++) {
const typ = lvl.at(x, y)?.typ;
if (typ === FOUNTAIN) nfountains++;
if (typ === SINK) nsinks++;
}
}
lvl.flags.nfountains = nfountains;
lvl.flags.nsinks = nsinks;
}
function is_special_level(lev = game.u?.uz) {
if (!lev) return null;
let slev = game.sp_levchn;
while (slev) {
const d = slev.dlevel;
if (d && d.dnum === lev.dnum && d.dlevel === lev.dlevel) return slev;
slev = slev.next;
}
return null;
}
function in_quest(lev = game.u?.uz) {
return !!lev && lev.dnum === game.quest_dnum;
}
// is_rogue_level: imported from macros.js
function in_hell(lev = game.u?.uz) {
const dng = game.dungeons?.[lev?.dnum ?? -1];
return !!dng?.flags?.hellish;
}
// in_endgame: imported from macros.js as In_endgame
function in_v_tower(lev = game.u?.uz) {
return !!lev && lev.dnum === (game.tower_dnum ?? -1);
}
function is_oracle_level(lev = game.u?.uz) {
const oracle = game.oracle_level;
return !!lev && !!oracle && lev.dnum === oracle.dnum && lev.dlevel === oracle.dlevel;
}
function in_mines(lev = game.u?.uz) {
return !!lev && lev.dnum === (game.mines_dnum ?? -1);
}
function roguename() {
const opts = process?.env?.ROGUEOPTS || '';
if (opts) {
for (const part of opts.split(',')) {
if (part.startsWith('name=')) return part.slice(5);
}
}
return rn2(3) ? (rn2(2) ? 'Michael Toy' : 'Kenneth Arnold') : 'Glenn Wichman';
}
// NOTE: equivalent to canonical extralev.js but kept to avoid circular dependency (extralev imports from mklev)
function roguejoin(x1, y1, x2, y2, horiz) {
let middle;
if (horiz) {
middle = x1 + rn2(x2 - x1 + 1);
for (let x = Math.min(x1, middle); x <= Math.max(x1, middle); x++) corr(x, y1);
for (let y = Math.min(y1, y2); y <= Math.max(y1, y2); y++) corr(middle, y);
for (let x = Math.min(middle, x2); x <= Math.max(middle, x2); x++) corr(x, y2);
} else {
middle = y1 + rn2(y2 - y1 + 1);
for (let y = Math.min(y1, middle); y <= Math.max(y1, middle); y++) corr(x1, y);
for (let x = Math.min(x1, x2); x <= Math.max(x1, x2); x++) corr(x, middle);
for (let y = Math.min(middle, y2); y <= Math.max(middle, y2); y++) corr(x2, y);
}
}
async function roguecorr(grid, x, y, dir) {
const roomAt = (rx, ry) => grid[rx]?.[ry];
const r = roomAt(x, y);
if (!r) return;
let fromx, fromy, tox, toy;
if (dir === XL_DOWN) {
r.doortable &= ~XL_DOWN;
if (!r.real) {
fromx = r.rlx + 1 + 26 * x;
fromy = r.rly + 7 * y;
} else {
fromx = r.rlx + rn2(r.dx) + 1 + 26 * x;
fromy = r.rly + r.dy + 7 * y;
await dodoor(fromx, fromy, game.level.rooms[r.nroom]);
const loc = game.level?.at(fromx, fromy);
if (loc) loc.flags = D_NODOOR;
fromy++;
}
if (y >= 2) return;
y++;
const r2 = roomAt(x, y);
if (!r2) return;
r2.doortable &= ~XL_UP;
if (!r2.real) {
tox = r2.rlx + 1 + 26 * x;
toy = r2.rly + 7 * y;
} else {
tox = r2.rlx + rn2(r2.dx) + 1 + 26 * x;
toy = r2.rly - 1 + 7 * y;
await dodoor(tox, toy, game.level.rooms[r2.nroom]);
const loc = game.level?.at(tox, toy);
if (loc) loc.flags = D_NODOOR;
toy--;
}
roguejoin(fromx, fromy, tox, toy, false);
return;
}
if (dir === XL_RIGHT) {
r.doortable &= ~XL_RIGHT;
if (!r.real) {
fromx = r.rlx + 1 + 26 * x;
fromy = r.rly + 7 * y;
} else {
fromx = r.rlx + r.dx + 1 + 26 * x;
fromy = r.rly + rn2(r.dy) + 7 * y;
await dodoor(fromx, fromy, game.level.rooms[r.nroom]);
const loc = game.level?.at(fromx, fromy);
if (loc) loc.flags = D_NODOOR;
fromx++;
}
if (x >= 2) return;
x++;
const r2 = roomAt(x, y);
if (!r2) return;
r2.doortable &= ~XL_LEFT;
if (!r2.real) {
tox = r2.rlx + 1 + 26 * x;
toy = r2.rly + 7 * y;
} else {
tox = r2.rlx - 1 + 1 + 26 * x;
toy = r2.rly + rn2(r2.dy) + 7 * y;
await dodoor(tox, toy, game.level.rooms[r2.nroom]);
const loc = game.level?.at(tox, toy);
if (loc) loc.flags = D_NODOOR;
tox--;
}
roguejoin(fromx, fromy, tox, toy, true);
}
}
function miniwalk(grid, x, y) {
while (true) {
const dirs = [];
const here = grid[x][y];
if (x > 0 && !(here.doortable & XL_LEFT)
&& (!grid[x - 1][y].doortable || !rn2(10))) dirs.push(0);
if (x < 2 && !(here.doortable & XL_RIGHT)
&& (!grid[x + 1][y].doortable || !rn2(10))) dirs.push(1);
if (y > 0 && !(here.doortable & XL_UP)
&& (!grid[x][y - 1].doortable || !rn2(10))) dirs.push(2);
if (y < 2 && !(here.doortable & XL_DOWN)
&& (!grid[x][y + 1].doortable || !rn2(10))) dirs.push(3);
if (!dirs.length) return;
const dir = dirs[rn2(dirs.length)];
switch (dir) {
case 0:
here.doortable |= XL_LEFT;
x--;
grid[x][y].doortable |= XL_RIGHT;
break;
case 1:
here.doortable |= XL_RIGHT;
x++;
grid[x][y].doortable |= XL_LEFT;
break;
case 2:
here.doortable |= XL_UP;
y--;
grid[x][y].doortable |= XL_DOWN;
break;
case 3:
here.doortable |= XL_DOWN;
y++;
grid[x][y].doortable |= XL_UP;
break;
default:
return;
}
miniwalk(grid, x, y);
}
}
// NOTE: differs from canonical extralev.js — local sets smeq, passes grid to roguecorr, different nroom init; also circular dep
// makeroguerooms: imported from extralev.js
// C ref: mklev.c makemaz() routing (script-backed in JS)
async function run_level_script(baseName, slev = null) {
if (!baseName) return false;
let scriptName = baseName;
if (scriptName.startsWith('x-') && game.urole?.filecode) {
scriptName = `${game.urole.filecode}${scriptName.slice(1)}`;
}
reset_des_coder();
// C ref: mkmaze.c makemaz() picks random variant before Lua init.
// This is logged as rnd(slev->rndlevs), not rn2()+1.
if (slev && slev.rndlevs > 0) {
scriptName = `${baseName}-${rnd(slev.rndlevs)}`;
}
// C ref: nhlua.c load_lua() -> nhl_init() loads nhlib.lua into a fresh
// Lua state for each special-level file. nhlib.lua shuffles 3-entry
// align[] once at load time, consuming rn2(3), rn2(2).
// We shuffle an actual array and pass it to generate() so scripts
// that use align get the pre-shuffled values without re-shuffling.
// C nhlib.lua initial order: {"law","neutral","chaos"} = [A_LAWFUL, A_NEUTRAL, A_CHAOTIC]
// The JS shuffle must start with the same order so identical RNG produces identical results.
const _nhlib_align = [A_LAWFUL, A_NEUTRAL, A_CHAOTIC];
shuffle(_nhlib_align);
try {
const mod = await import(`./levels/${scriptName}.js`);
if (typeof mod.generate === 'function') {
const out = mod.generate(_nhlib_align);
if (out && typeof out.then === 'function') await out;
await finalize_level();
if (scriptName === 'minetn-1' && In_mines(game.u?.uz)) {
// C ref: mkmaze.c:712 check_ransacked — set ransacked flag
game.ransacked = 1;
await stolen_booty();
}
// C ref: sp_lev.c:6058 — C fills special rooms here AND again
// in makelevel's post-loop. Skipping first fill here for now
// because the double-fill produces extra RNG. The makelevel
// loop at the bottom handles it.
return true;
}
} catch (err) {
if (process?.env?.DEBUG_LEVEL_SCRIPT_FAIL === '1')
console.error(`[run_level_script] ${scriptName} failed: ${err?.message || err}`);
return false;
}
return false;
}
// C ref: mklev.c:1241 makelevel()
// Master level generation function.
async function makelevel() {
const g = game;
// C: oinit() — reassign level-dependent object probabilities
oinit();
// C: clear_level_structures()
clear_level_structures();
const slev = is_special_level(g.u?.uz);
const dng = g.dungeons?.[g.u?.uz?.dnum ?? 0];
const medusa = g.medusa_level;
let generatedSpecial = false;
let wantMazeFallback = false;
// C ref: mklev.c makelevel() branch ordering.
if (slev && !is_rogue_level(g.u?.uz)) {
// s_level.flags.align in C is derived from dungeon flags.
// JS keeps a compatible fallback on the dungeon metadata.
g.special_level_align = slev.flags?.align ?? dng?.flags?.align ?? 0;
if (await run_level_script(slev.proto, slev)) generatedSpecial = true;
} else if (dng?.proto && dng.proto.length > 0) {
g.special_level_align = dng?.flags?.align ?? 0;
if (await run_level_script(dng.proto, null)) generatedSpecial = true;
} else if (dng?.fill_lvl && dng.fill_lvl.length > 0) {
g.special_level_align = dng?.flags?.align ?? 0;
if (await run_level_script(dng.fill_lvl, null)) generatedSpecial = true;
} else if (in_quest(g.u?.uz)) {
const roleCode = g.urole?.filecode ?? '';
const loca = find_level(`${roleCode}-loca`);
const side = ((g.u?.uz?.dlevel ?? 1) < (loca?.dlevel?.dlevel ?? 1)) ? 'a' : 'b';
g.special_level_align = dng?.flags?.align ?? 0;
if (await run_level_script(`${roleCode}-fil${side}`, null)) generatedSpecial = true;
} else if (in_hell(g.u?.uz)
|| (rn2(5)
&& g.u?.uz?.dnum === medusa?.dnum
&& (g.u?.uz?.dlevel ?? 1) > (medusa?.dlevel ?? 999))) {
g.special_level_align = dng?.flags?.align ?? 0;
if (await run_level_script(dng?.proto || '', null)) generatedSpecial = true;
else wantMazeFallback = true;
}
// C ref: mkmaze.c:698-699 — Mine Town marks has_town during makemaz,
// before makelevel() performs fill_special_room() passes.
if (slev?.flags?.town)
g.level.flags.has_town = true;
// C ref: mkmaze.c:1196-1222 — non-special maze levels (Gehennom, below Medusa)
// When in_hell() or below-Medusa and no level script loaded, generate maze.
if (!generatedSpecial && wantMazeFallback) {
await makemaz_empty();
generatedSpecial = true;
}
if (!generatedSpecial) {
// --- Regular level generation ---
const rogueLevel = is_rogue_level(g.u?.uz);
g.level.flags.is_rogue = !!rogueLevel;
if (rogueLevel) {
await makeroguerooms();
await makerogueghost();
} else {
await makerooms();
}
if (g.level.nroom <= 0) {
// Fallback: create at least one room
// This shouldn't happen but prevents crashes
return;
}
sort_rooms();
await generate_stairs();
// C ref: mklev.c:1295 — check for dungeon branch on this level
const branchp = is_branchlev();
let room_threshold = branchp ? 4 : 3;
if (!rogueLevel) {
await makecorridors();
await make_niches();
// C ref: mklev.c:1306-1332 — create secret vault and fill with gold
if (g.vault_x !== -1) {
const vw = { v: 1 }, vh = { v: 1 };
const vx = { v: g.vault_x }, vy = { v: g.vault_y };
if (check_room(vx, vw, vy, vh, true)) {
// Vault room created — add it and fill with gold
add_room(vx.v, vy.v, vx.v + vw.v, vy.v + vh.v, true, VAULT, false);
g.level.flags.has_vault = true; // C: svl.level.flags.has_vault = 1
room_threshold++;
const vaultRoom = g.level.rooms[g.level.nroom - 1];
if (vaultRoom) {
vaultRoom.needfill = FILL_NORMAL;
// C ref: sp_lev.c:2761-2764 fill_special_room for VAULT
await fill_special_room(vaultRoom); // fill vault with gold NOW
// C fills vault TWICE: once here, once in the later
// fill_special_room loop. The second fill consumes rn2(100)
// per tile (from mkgold/rn1) but adds to existing gold.
// Keep needfill=FILL_NORMAL so the loop refills.
}
// C: mk_knox_portal(vault_x + w, vault_y + h)
// mk_knox_portal checks Is_branchlev (early return) then
// consumes rn2(3) only when floating source is still unset.
await mk_knox_portal(vx.v + vw.v, vy.v + vh.v);
// C: if (!level.flags.noteleport && !rn2(3)) makevtele()
if (!g.level.flags.noteleport && !rn2(3)) {
// C ref: mklev.c:811 makevtele() = makeniche(TELEP_TRAP)
await makeniche(15); // TELEP_TRAP = 15
}
} else if (rnd_rect()) {
// Fallback: try creating vault via rectangle allocator
if (create_vault()) {
// Second chance at placing vault
const vr = g.level.rooms[g.level.nroom];
if (vr) {
const vx2 = { v: vr.lx }, vw2 = { v: 1 };
const vy2 = { v: vr.ly }, vh2 = { v: 1 };
if (check_room(vx2, vw2, vy2, vh2, true)) {
add_room(vx2.v, vy2.v, vx2.v + vw2.v, vy2.v + vh2.v,
true, VAULT, false);
g.level.flags.has_vault = true;
room_threshold++;
const vaultRoom = g.level.rooms[g.level.nroom - 1];
if (vaultRoom) {
vaultRoom.needfill = FILL_NORMAL;
await fill_special_room(vaultRoom);
}
// C ref: mklev.c fill_vault label — both primary and
// fallback vault creation paths call mk_knox_portal()
// before makevtele().
await mk_knox_portal(vx2.v + vw2.v, vy2.v + vh2.v);
if (!g.level.flags.noteleport && !rn2(3)) { await makeniche(15); /* TELEP_TRAP */ }
} else {
if (g.level.rooms[g.level.nroom]) g.level.rooms[g.level.nroom].hx = -1;
}
}
}
}
}
// C ref: mklev.c:1355-1383 — special room type selection
const uz = g.u?.uz;
const u_depth = ((g.dungeons?.[uz?.dnum ?? 0]?.depth_start ?? 1)
+ (uz?.dlevel ?? 1) - 1);
const medusa = g.medusa_level;
const medusa_depth = medusa
? ((g.dungeons?.[medusa.dnum ?? 0]?.depth_start ?? 1)
+ (medusa.dlevel ?? 1) - 1)
: Number.POSITIVE_INFINITY;
const hasShoptypeEnv = (typeof process !== 'undefined' && process?.env
&& Object.prototype.hasOwnProperty.call(process.env, 'SHOPTYPE'));
if (g.flags?.debug && hasShoptypeEnv) await do_mkroom(SHOPBASE);
else if (u_depth > 1 && u_depth < medusa_depth
&& g.level.nroom >= room_threshold && rn2(u_depth) < 3) await do_mkroom(SHOPBASE);
else if (u_depth > 4 && !rn2(6)) await do_mkroom(COURT);
else if (u_depth > 5 && !rn2(8)
&& !((g.mvitals?.[PM_LEPRECHAUN]?.mvflags ?? 0) & G_GONE)) await do_mkroom(LEPREHALL);
else if (u_depth > 6 && !rn2(7)) await do_mkroom(ZOO);
else if (u_depth > 8 && !rn2(5)) await do_mkroom(TEMPLE);
else if (u_depth > 9 && !rn2(5)
&& !((g.mvitals?.[PM_KILLER_BEE]?.mvflags ?? 0) & G_GONE)) await do_mkroom(BEEHIVE);
else if (u_depth > 11 && !rn2(6)) await do_mkroom(MORGUE);
else if (u_depth > 12 && !rn2(8) && antholemon()) await do_mkroom(ANTHOLE);
else if (u_depth > 14 && !rn2(4)
&& !((g.mvitals?.[PM_SOLDIER]?.mvflags ?? 0) & G_GONE)) await do_mkroom(BARRACKS);
else if (u_depth > 15 && !rn2(6)) await do_mkroom(SWAMP);
else if (u_depth > 16 && !rn2(8)
&& !((g.mvitals?.[PM_COCKATRICE]?.mvflags ?? 0) & G_GONE)) await do_mkroom(COCKNEST);
}
// C ref: mklev.c:1370 — place dungeon branch (Mines entrance on level 1)
if (branchp) {
const prevstairs = g.stairs;
await place_branch(branchp);
if (g.u?.uz?.dnum === 0 && g.u?.uz?.dlevel === 1 && g.stairs !== prevstairs && g.stairs) {
g.stairs.u_traversed = true;
}
}
// C ref: mklev.c:1391 — choose bonus item room
let fillable_room_count = 0;
for (let i = 0; i < g.level.nroom; i++) {
const rm = g.level.rooms[i];
if (rm && rm.hx > 0
&& (rm.rtype === OROOM || rm.rtype === THEMEROOM)
&& rm.needfill === FILL_NORMAL)
fillable_room_count++;
}
const bonus_item_room_countdown = fillable_room_count
? rn2(fillable_room_count) : -1;
// C ref: mklev.c:1394-1402 — fill rooms with contents
let bonus_countdown = bonus_item_room_countdown;
for (let i = 0; i < g.level.nroom; i++) {
const rm = g.level.rooms[i];
if (!rm || rm.hx <= 0) continue;
const fillable = (rm.rtype === OROOM || rm.rtype === THEMEROOM)
&& rm.needfill === FILL_NORMAL;
await fill_ordinary_room(rm, fillable && bonus_countdown === 0);
if (fillable) bonus_countdown--;
}
}
// C ref: mklev.c:1416 — fill special rooms (shops, zoos, temples, etc.)
// This runs for ALL levels including special ones.
// Comment in C: "Fill all special rooms now, regardless of whether this
// is a special level, proto level, or ordinary level."
for (let i = 0; i < g.level.nroom; i++) {
await fill_special_room(g.level.rooms[i]);
}
// C ref: mklev.c:1192-1198 — run theme room post-level-generate
// callbacks. In C, this calls post_level_generate() from the Lua
// themerms state, which iterates the postprocess table (engraving
// placement, wall conversion, trap creation, etc.).
// This must run AFTER fill_special_room, BEFORE wallification.
const dnum = g.u?.uz?.dnum ?? 0;
if (g._luathemes_loaded?.[dnum]) {
await themerooms_post_level_generate();
wallification(1, 0, COLNO - 1, ROWNO - 1);
}
}
// C ref: mklev.c — clear_level_structures()
function clear_level_structures() {
const g = game;
// C ref: clear_level_structures() resets level-linked chains.
// Keep fmon scoped to the level being generated.
g.fmon = null;
g.level = new GameMap();
g.level.nroom = 0;
g.level.rooms = [];
g.subrooms = [];
g.made_branch = false;
g.smeq = new Array(MAXNROFROOMS + 1).fill(0);
g.level.doorindex = 0;
g.level.doors = [];
g.stairs = null;
g.vault_x = -1;
// C ref: mklev.c clear_level_structures() level.flags defaults.
const lf = g.level.flags;
lf.nfountains = 0;
lf.nsinks = 0;
lf.has_shop = false;
lf.has_vault = false;
lf.has_zoo = false;
lf.has_court = false;
lf.has_morgue = false;
lf.graveyard = false;
lf.has_beehive = false;
lf.has_barracks = false;
lf.has_temple = false;
lf.has_swamp = false;
lf.noteleport = false;
lf.hardfloor = false;
lf.nommap = false;
lf.hero_memory = true;
lf.shortsighted = false;
lf.sokoban_rules = false;
lf.is_maze_lev = false;
lf.is_cavernous_lev = false;
lf.arboreal = false;
lf.has_town = false;
lf.wizard_bones = false;
lf.corrmaze = false;
lf.temperature = in_hell(g.u?.uz) ? 1 : 0;
lf.rndmongen = true;
lf.deathdrops = true;
lf.noautosearch = false;
lf.fumaroles = false;
lf.stormy = false;
lf.stasis_until = 0;
init_rect();
}
// C ref: mklev.c:356 makerooms()
// Place rooms using the rectangle allocator.
// RNG: extensive — room dimensions, positions, vault decision.
async function makerooms() {
const g = game;
let tried_vault = false;
// C ref: mklev.c:365-380 — load themerms.lua for themed rooms
// Loading a Lua file via nhl_init triggers nhlib.lua which shuffles
// the align[] array — 2 core RNG calls (rn2(3), rn2(2)).
// This only happens ONCE per dungeon branch (C caches in luathemes[dnum]).
const dnum = g.u?.uz?.dnum ?? 0;
if (dnum === 0 && !g._luathemes_loaded) {
g._luathemes_loaded = {};
}
if (dnum === 0 && !g._luathemes_loaded?.[dnum]) {
// nhlib.lua shuffle when loading themerms.lua (first level of branch).
// Preserve both RNG consumption and the resulting align[] permutation.
const themedAlign = ['law', 'neutral', 'chaos'];
for (let i = themedAlign.length; i > 1; i--) {
const j = rn2(i);
[themedAlign[i - 1], themedAlign[j]] = [themedAlign[j], themedAlign[i - 1]];
}
g._luathemes_align = g._luathemes_align || {};
g._luathemes_align[dnum] = themedAlign;
if (g._luathemes_loaded) g._luathemes_loaded[dnum] = true;
}
// C ref: mklev.c:382-388 — pre_themerooms_generate (no RNG calls)
const hasThemes = (dnum === 0);
// C ref: mklev.c uses level_difficulty() for theme room selection,
// which is based on depth() not raw dlevel.
const difficulty = depth_of_level(g.u?.uz);
let themeroom_tries = 0;
// Make rooms until satisfied or no more space
while (g.level.nroom < (MAXNROFROOMS - 1) && rnd_rect()) {
if (g.level.nroom >= Math.trunc(MAXNROFROOMS / 6) && rn2(2) && !tried_vault) {
tried_vault = true;
if (create_vault()) {
g.vault_x = g.level.rooms[g.level.nroom]?.lx ?? -1;
g.vault_y = g.level.rooms[g.level.nroom]?.ly ?? -1;
// mark as unused
if (g.level.rooms[g.level.nroom]) g.level.rooms[g.level.nroom].hx = -1;
}
} else {
if (hasThemes) {
// C ref: mklev.c:402-411 — call themerooms_generate()
if (!(await themerooms_generate(difficulty))) {
// C uses post-increment: themeroom_tries++ > 10
if (themeroom_tries++ > 10
|| g.level.nroom >= Math.trunc(MAXNROFROOMS / 6))
break;
}
} else {
if (!create_room(-1, -1, -1, -1, -1, -1, OROOM, -1))
break;
}
}
}
}
// C ref: mkmap.c:443 litstate_rnd()
// RNG: rnd() and rn2(77) when litstate < 0
function litstate_rnd(litstate) {
if (litstate < 0) {
// C ref: mkmap.c:446 — uses depth(&u.uz), not dlevel.
// depth() accounts for the dungeon's depth_start offset.
const uz = game.u?.uz;
const d = depth_of_level(uz);
return (rnd(1 + Math.abs(d)) < 11 && rn2(77)) ? true : false;
}
return !!litstate;
}
function isSolidTile(x, y) {
if (!isok(x, y)) return true;
const typ = game.level?.at(x, y)?.typ ?? STONE;
return IS_STWALL(typ);
}
function isWallOrStone(x, y) {
if (!isok(x, y)) return 1;
const typ = game.level?.at(x, y)?.typ ?? STONE;
return (typ === STONE || isWallTile(x, y)) ? 1 : 0;
}
function isWallTile(x, y) {
if (!isok(x, y)) return 0;
const typ = game.level?.at(x, y)?.typ ?? STONE;
return (IS_WALL(typ) || IS_DOOR(typ) || typ === LAVAWALL
|| typ === WATER || typ === SDOOR || typ === IRONBARS) ? 1 : 0;
}
function extend_spine(locale, wall_there, dx, dy) {
const nx = 1 + dx;
const ny = 1 + dy;
if (!wall_there) return 0;
if (dx) {
if (locale[1][0] && locale[1][2] && locale[nx][0] && locale[nx][2]) {
return 0;
}
return 1;
}
if (locale[0][1] && locale[2][1] && locale[0][ny] && locale[2][ny]) {
return 0;
}
return 1;
}
export function wall_cleanup(x1, y1, x2, y2) {
const map = game.level;
if (!map) return;
for (let x = x1; x <= x2; x++) {
for (let y = y1; y <= y2; y++) {
const loc = map.at(x, y);
const typ = loc?.typ ?? STONE;
if (!(IS_WALL(typ) && typ !== DBWALL)) continue;
if (isSolidTile(x - 1, y - 1) && isSolidTile(x - 1, y)
&& isSolidTile(x - 1, y + 1) && isSolidTile(x, y - 1)
&& isSolidTile(x, y + 1) && isSolidTile(x + 1, y - 1)
&& isSolidTile(x + 1, y) && isSolidTile(x + 1, y + 1)) {
loc.typ = STONE;
}
}
}
}
function fix_wall_spines(x1, y1, x2, y2) {
const spineArray = [VWALL, HWALL, HWALL, HWALL,
VWALL, TRCORNER, TLCORNER, TDWALL,
VWALL, BRCORNER, BLCORNER, TUWALL,
VWALL, TLWALL, TRWALL, CROSSWALL];
const map = game.level;
if (!map) return;
for (let x = x1; x <= x2; x++) {
for (let y = y1; y <= y2; y++) {
const loc = map.at(x, y);
const typ = loc?.typ ?? STONE;
if (!(IS_WALL(typ) && typ !== DBWALL)) continue;
const locale = [
[isWallOrStone(x - 1, y - 1), isWallOrStone(x - 1, y), isWallOrStone(x - 1, y + 1)],
[isWallOrStone(x, y - 1), 0, isWallOrStone(x, y + 1)],
[isWallOrStone(x + 1, y - 1), isWallOrStone(x + 1, y), isWallOrStone(x + 1, y + 1)],
];
const bits = (extend_spine(locale, isWallTile(x, y - 1), 0, -1) << 3)
| (extend_spine(locale, isWallTile(x, y + 1), 0, 1) << 2)
| (extend_spine(locale, isWallTile(x + 1, y), 1, 0) << 1)
| extend_spine(locale, isWallTile(x - 1, y), -1, 0);
if (bits) loc.typ = spineArray[bits];
}
}
}
export function wallification(x1, y1, x2, y2) {
wall_cleanup(x1, y1, x2, y2);
fix_wall_spines(x1, y1, x2, y2);
}
// C ref: sp_lev.c:1407 check_room()
// Validates room placement, shrinking if necessary. RNG: rn2(3) per overlap.
function check_room(lowx, ddx, lowy, ddy, vault) {
const XLIM = 4, YLIM = 3;
const map = game.level;
let hix = lowx.v + ddx.v, hiy = lowy.v + ddy.v;
const xlim = XLIM + (vault ? 1 : 0);
const ylim = YLIM + (vault ? 1 : 0);
const s_lowx = lowx.v, s_ddx = ddx.v;
const s_lowy = lowy.v, s_ddy = ddy.v;
if (lowx.v < 3) lowx.v = 3;
if (lowy.v < 2) lowy.v = 2;
if (hix > COLNO - 3) hix = COLNO - 3;
if (hiy > ROWNO - 3) hiy = ROWNO - 3;
for (;;) { // chk label
if (hix <= lowx.v || hiy <= lowy.v) return false;
if (game.in_mk_themerooms
&& s_lowx !== lowx.v && s_ddx !== ddx.v
&& s_lowy !== lowy.v && s_ddy !== ddy.v) {
return false;
}
let retry = false;
for (let x = lowx.v - xlim; x <= hix + xlim && !retry; x++) {
if (x <= 0 || x >= COLNO) continue;
let y = Math.max(lowy.v - ylim, 0);
const ymax = Math.min(hiy + ylim, ROWNO - 1);
for (; y <= ymax; y++) {
const loc = map.at(x, y);
if (loc && loc.typ !== STONE) {
if (!rn2(3)) return false;
if (game.in_mk_themerooms) return false;
if (x < lowx.v) lowx.v = x + xlim + 1;
else hix = x - xlim - 1;
if (y < lowy.v) lowy.v = y + ylim + 1;
else hiy = y - ylim - 1;
retry = true;
break;
}
}
}
if (!retry) break;
}
ddx.v = hix - lowx.v;
ddy.v = hiy - lowy.v;
if (game.in_mk_themerooms
&& s_lowx !== lowx.v && s_ddx !== ddx.v
&& s_lowy !== lowy.v && s_ddy !== ddy.v) {
return false;
}
return true;
}
// C ref: sp_lev.c:1486 create_room()
// Faithful port of the C room creation function.
// RNG: rnd_rect, rn2 for dimensions/position, litstate_rnd, check_room
// _suppressMidlog: themed room calls suppress >create_room midlog
// because C's themed path doesn't go through the midlog-wrapped create_room
export function create_room(x, y, w, h, xal, yal, rtype, rlit, _suppressMidlog) {
if (!_suppressMidlog) pushRngLogEntry('>create_room');
const result = _create_room_impl(x, y, w, h, xal, yal, rtype, rlit);
if (!_suppressMidlog) pushRngLogEntry(`<create_room=${result ? 1 : 0}`);
return result;
}
function _create_room_impl(x, y, w, h, xal, yal, rtype, rlit) {
const g = game;
const XLIM = 4, YLIM = 3;
const SPLEV_LEFT = 1;
const SPLEV_CENTER = 3;
const SPLEV_RIGHT = 5;
const TOP = 1;
const BOTTOM = 5;
let xabs = 0, yabs = 0;
let r1 = null, r2 = null;
let wtmp, htmp;
let trycnt = 0;
let vault = false;
let xlim = XLIM, ylim = YLIM;
if (rtype === -1) rtype = OROOM;
if (rtype === VAULT) {
vault = true;
xlim++;
ylim++;
}
// Lighting state — RNG if rlit < 0
rlit = litstate_rnd(rlit);
do {
wtmp = w; htmp = h;
let xtmp = x, ytmp = y;
let xaltmp = xal, yaltmp = yal;
// Totally random room (all params -1) or vault
if ((xtmp < 0 && ytmp < 0 && wtmp < 0 && xaltmp < 0 && yaltmp < 0)
|| vault) {
r1 = rnd_rect();
if (!r1) return false;
const hx = r1.hx, hy = r1.hy, lx = r1.lx, ly = r1.ly;
let dx, dy;
if (vault) {
dx = dy = 1;
} else {
dx = 2 + rn2((hx - lx > 28) ? 12 : 8);
dy = 2 + rn2(4);
if (dx * dy > 50)
dy = Math.trunc(50 / dx);
}
const xborder = (lx > 0 && hx < COLNO - 1) ? 2 * xlim : xlim + 1;
const yborder = (ly > 0 && hy < ROWNO - 1) ? 2 * ylim : ylim + 1;
if (hx - lx < dx + 3 + xborder || hy - ly < dy + 3 + yborder) {
r1 = null;
continue;
}
xabs = lx + (lx > 0 ? xlim : 3)
+ rn2(hx - (lx > 0 ? lx : 3) - dx - xborder + 1);
yabs = ly + (ly > 0 ? ylim : 2)
+ rn2(hy - (ly > 0 ? ly : 2) - dy - yborder + 1);
if (ly === 0 && hy >= ROWNO - 1
&& (!g.level.nroom || !rn2(g.level.nroom))
&& (yabs + dy > Math.trunc(ROWNO / 2))) {
yabs = rn1(3, 2);
if (g.level.nroom < 4 && dy > 1)
dy--;
}
const lowx = { v: xabs }, ddx = { v: dx };
const lowy = { v: yabs }, ddy = { v: dy };
if (!check_room(lowx, ddx, lowy, ddy, vault)) {
r1 = null;
continue;
}
xabs = lowx.v;
yabs = lowy.v;
wtmp = ddx.v + 1;
htmp = ddy.v + 1;
r2 = { lx: xabs - 1, ly: yabs - 1,
hx: xabs + wtmp, hy: yabs + htmp };
} else {
let rndpos = 0;
let dx, dy;
if (xtmp < 0 && ytmp < 0) {
xtmp = rnd(5);
ytmp = rnd(5);
rndpos = 1;
}
if (wtmp < 0 || htmp < 0) {
wtmp = rn1(15, 3);
htmp = rn1(8, 2);
}
if (xaltmp === -1) xaltmp = rnd(3);
if (yaltmp === -1) yaltmp = rnd(3);
xabs = (Math.trunc(((xtmp - 1) * COLNO) / 5)) + 1;
yabs = (Math.trunc(((ytmp - 1) * ROWNO) / 5)) + 1;
switch (xaltmp) {
case SPLEV_LEFT:
break;
case SPLEV_RIGHT:
xabs += Math.trunc(COLNO / 5) - wtmp;
break;
case SPLEV_CENTER:
xabs += Math.trunc((Math.trunc(COLNO / 5) - wtmp) / 2);
break;
}
switch (yaltmp) {
case TOP:
break;
case BOTTOM:
yabs += Math.trunc(ROWNO / 5) - htmp;
break;
case SPLEV_CENTER:
yabs += Math.trunc((Math.trunc(ROWNO / 5) - htmp) / 2);
break;
}
if (xabs + wtmp - 1 > COLNO - 2) xabs = COLNO - wtmp - 3;
if (xabs < 2) xabs = 2;
if (yabs + htmp - 1 > ROWNO - 2) yabs = ROWNO - htmp - 3;
if (yabs < 2) yabs = 2;
r2 = {
lx: xabs - 1,
ly: yabs - 1,
hx: xabs + wtmp + rndpos,
hy: yabs + htmp + rndpos,
};
r1 = get_rect(r2);
dx = wtmp;
dy = htmp;
if (r1) {
const lowx = { v: xabs }, ddx = { v: dx };
const lowy = { v: yabs }, ddy = { v: dy };
if (!check_room(lowx, ddx, lowy, ddy, vault)) {
r1 = null;
} else {
xabs = lowx.v;
yabs = lowy.v;
}
}
}
} while (++trycnt <= 100 && !r1);
if (!r1) return false;
// C ref: sp_lev.c:1650 — split AFTER the loop, using r1 from rnd_rect
// CRITICAL: use r1 (the rect from rnd_rect), NOT get_rect(r2).
// get_rect may return a different containing rect when multiple rects
// contain r2, causing incorrect splits.
split_rects(r1, r2);
if (!vault) {
g.smeq[g.level.nroom] = g.level.nroom;
add_room(xabs, yabs, xabs + wtmp - 1, yabs + htmp - 1,
rlit, rtype, false);
} else {
// Vault: just record position, don't create full room
if (!g.level.rooms[g.level.nroom]) g.level.rooms[g.level.nroom] = {};
g.level.rooms[g.level.nroom].lx = xabs;
g.level.rooms[g.level.nroom].ly = yabs;
}
return true;
}
// C ref: mklev.c — create_vault() (macro: create_room(-1, -1, 2, 2, -1, -1, VAULT, TRUE))
function create_vault() {
return create_room(-1, -1, 2, 2, -1, -1, VAULT, true);
}
// C ref: mklev.c:303 add_room()
export function add_room(lowx, lowy, hix, hiy, lit, rtype, special) {
const g = game;
const croom = {
lx: lowx, ly: lowy, hx: hix, hy: hiy,
rtype, rlit: lit ? 1 : 0,
doorct: 0, fdoor: g.level.doorindex,
irregular: false, needjoining: !special,
nsubrooms: 0, sbrooms: [],
roomnoidx: g.level.nroom,
needfill: 0,
};
// Draw the room on the map
do_room_or_subroom(croom, lowx, lowy, hix, hiy, lit, rtype, special, true);
g.level.rooms[g.level.nroom] = croom;
g.level.nroom++;
// Sentinel
if (g.level.nroom < MAXNROFROOMS) {
g.level.rooms[g.level.nroom] = { hx: -1 };
}
}
// C ref: mklev.c:1597 topologize()
export function topologize(croom) {
if (!croom || croom.irregular) return;
const roomno = (croom.roomnoidx ?? -1) + ROOMOFFSET;
const lowx = croom.lx, lowy = croom.ly;
const hix = croom.hx, hiy = croom.hy;
if (!game.level || roomno < ROOMOFFSET) return;
if ((game.level.at(lowx, lowy)?.roomno ?? 0) === roomno) return;
for (let x = lowx; x <= hix; x++) {
for (let y = lowy; y <= hiy; y++) {
const loc = game.level.at(x, y);
if (!loc) continue;
loc.roomno = roomno;
}
}
for (let x = lowx - 1; x <= hix + 1; x++) {
for (let y = lowy - 1; y <= hiy + 1; y += (hiy - lowy + 2)) {
const loc = game.level.at(x, y);
if (!loc) continue;
loc.edge = true;
loc.roomno = loc.roomno ? SHARED : roomno;
}
}
for (let x = lowx - 1; x <= hix + 1; x += (hix - lowx + 2)) {
for (let y = lowy; y <= hiy; y++) {
const loc = game.level.at(x, y);
if (!loc) continue;
loc.edge = true;
loc.roomno = loc.roomno ? SHARED : roomno;
}
}
for (const subroom of croom.sbrooms || []) {
if (subroom) topologize(subroom);
}
}
// C ref: mklev.c:230 do_room_or_subroom()
function do_room_or_subroom(croom, lowx, lowy, hix, hiy, lit, _rtype, special, is_room) {
const g = game;
const map = g.level;
// Clamp to bounds
if (!lowx) lowx++;
if (!lowy) lowy++;
if (hix >= COLNO - 1) hix = COLNO - 2;
if (hiy >= ROWNO - 1) hiy = ROWNO - 2;
// Lighting
if (lit) {
for (let x = lowx - 1; x <= hix + 1; x++)
for (let y = Math.max(lowy - 1, 0); y <= hiy + 1; y++)
if (map.at(x, y)) map.at(x, y).lit = true;
croom.rlit = 1;
} else {
croom.rlit = 0;
}
croom.lx = lowx;
croom.hx = hix;
croom.ly = lowy;
croom.hy = hiy;
croom.rtype = _rtype;
croom.doorct = 0;
croom.fdoor = game.level.doorindex;
croom.irregular = false;
croom.nsubrooms = 0;
croom.sbrooms = [];
if (!special) {
croom.needjoining = true;
// C ref: mklev.c:277-299 do_room_or_subroom()
// Only set typ and horizontal here. roomno and edge are set
// later by topologize() in level_finalize_topology().
for (let x = lowx - 1; x <= hix + 1; x++)
for (let y = lowy - 1; y <= hiy + 1; y += (hiy - lowy + 2)) {
const loc = map.at(x, y);
if (loc) {
loc.typ = HWALL;
loc.horizontal = true;
}
}
for (let x = lowx - 1; x <= hix + 1; x += (hix - lowx + 2))
for (let y = lowy; y <= hiy; y++) {
const loc = map.at(x, y);
if (loc) {
loc.typ = VWALL;
loc.horizontal = false;
}
}
for (let x = lowx; x <= hix; x++)
for (let y = lowy; y <= hiy; y++) {
const loc = map.at(x, y);
if (loc) {
loc.typ = ROOM;
}
}
if (is_room) {
const tl = map.at(lowx - 1, lowy - 1);
const tr = map.at(hix + 1, lowy - 1);
const bl = map.at(lowx - 1, hiy + 1);
const br = map.at(hix + 1, hiy + 1);
if (tl) tl.typ = TLCORNER;
if (tr) tr.typ = TRCORNER;
if (bl) bl.typ = BLCORNER;
if (br) br.typ = BRCORNER;
} else {
wallification(lowx - 1, lowy - 1, hix + 1, hiy + 1);
}
}
}
// C ref: sp_lev.c:create_subroom() + mklev.c:add_subroom()
export function create_subroom(proom, x, y, w, h, rtype, rlit) {
if (!proom) return false;
if ((proom.nsubrooms ?? 0) >= MAX_SUBROOMS) {
throw new Error('room has too many subrooms');
}
const width = proom.hx - proom.lx + 1;
const height = proom.hy - proom.ly + 1;
if (width < 4 || height < 4) {
return false;
}
if (w === -1) w = rnd(width - 3);
if (h === -1) h = rnd(height - 3);
if (x === -1) x = rnd(width - w);
if (y === -1) y = rnd(height - h);
if (x === 1) x = 0;
if (y === 1) y = 0;
if ((x + w + 1) === width) x++;
if ((y + h + 1) === height) y++;
if (rtype === -1) rtype = OROOM;
rlit = litstate_rnd(rlit);
const lowx = proom.lx + x;
const lowy = proom.ly + y;
const hix = lowx + w - 1;
const hiy = lowy + h - 1;
if (!Array.isArray(game.subrooms)) game.subrooms = [];
const subroom = {
lx: lowx, ly: lowy, hx: hix, hy: hiy,
rtype, rlit,
doorct: 0, fdoor: game.level.doorindex,
irregular: false, needjoining: true,
nsubrooms: 0, sbrooms: [],
// C ref: topologize() uses (subroom_ptr - svr.rooms) + ROOMOFFSET.
// In the C data layout, first subroom maps to MAXNROFROOMS + 1.
roomnoidx: (MAXNROFROOMS + 1) + game.subrooms.length,
needfill: 0,
};
do_room_or_subroom(subroom, lowx, lowy, hix, hiy, rlit, rtype, false, false);
proom.sbrooms.push(subroom);
proom.nsubrooms = proom.sbrooms.length;
game.subrooms.push(subroom);
return true;
}
// C ref: mklev.c:209 sort_rooms()
function sort_rooms() {
const g = game;
const n = g.level.nroom;
const oldToNew = new Array(n).fill(0);
const liveRooms = g.level.rooms.slice(0, n)
.sort((a, b) => (a?.lx || 0) - (b?.lx || 0));
g.level.rooms = liveRooms;
if (n < MAXNROFROOMS) {
g.level.rooms[n] = { hx: -1 };
}
// Update roomnoidx after sort
for (let i = 0; i < n; i++) {
if (g.level.rooms[i]) {
oldToNew[g.level.rooms[i].roomnoidx] = i;
g.level.rooms[i].roomnoidx = i;
}
}
// Update map roomno values to match the new left-to-right room order.
for (let x = 1; x < COLNO; x++) {
for (let y = 0; y < ROWNO; y++) {
const loc = g.level.at(x, y);
const rno = loc?.roomno ?? 0;
if (rno >= ROOMOFFSET && rno < MAXNROFROOMS + 1) {
loc.roomno = oldToNew[rno - ROOMOFFSET] + ROOMOFFSET;
}
}
}
}
// C ref: mklev.c:72 good_rm_wall_doorpos()
function good_rm_wall_doorpos(x, y, dir, room) {
const g = game;
const map = g.level;
const rmno = g.level.rooms.indexOf(room) + ROOMOFFSET;
if (!isok(x, y) || !room.needjoining) return false;
const loc = map.at(x, y);
if (!loc) return false;
if (!(loc.typ === HWALL || loc.typ === VWALL || IS_DOOR(loc.typ) || loc.typ === SDOOR))
return false;
if (bydoor(x, y)) return false;
const tx = x + xdir[dir], ty = y + ydir[dir];
if (!isok(tx, ty)) return false;
const tloc = map.at(tx, ty);
if (!tloc || IS_OBSTRUCTED(tloc.typ)) return false;
if (rmno !== tloc.roomno) return false;
return true;
}
// C ref: mklev.c:105 finddpos_shift()
function finddpos_shift(xp, yp, dir, aroom) {
const rdir = DIR_180(dir);
const dx = xdir[rdir], dy = ydir[rdir];
if (good_rm_wall_doorpos(xp.v, yp.v, rdir, aroom))
return true;
if (aroom.irregular) {
let rx = xp.v;
let ry = yp.v;
let fail = false;
while (!fail && isok(rx, ry)) {
const loc = game.level.at(rx, ry);
if (!loc || (loc.typ !== STONE && loc.typ !== CORR)) break;
rx += dx;
ry += dy;
if (good_rm_wall_doorpos(rx, ry, rdir, aroom)) {
xp.v = rx;
yp.v = ry;
return true;
}
const next = game.level.at(rx, ry);
if (!next || (next.typ !== STONE && next.typ !== CORR))
fail = true;
if (rx < aroom.lx || rx > aroom.hx || ry < aroom.ly || ry > aroom.hy)
fail = true;
}
}
return false;
}
// C ref: mklev.c:146 finddpos()
// RNG: rn1(range, base) for random x and y position
function finddpos(cc, dir, aroom) {
let x1, y1, x2, y2;
switch (dir) {
case DIR_N: x1 = aroom.lx; x2 = aroom.hx; y1 = y2 = aroom.ly - 1; break;
case DIR_S: x1 = aroom.lx; x2 = aroom.hx; y1 = y2 = aroom.hy + 1; break;
case DIR_W: x1 = x2 = aroom.lx - 1; y1 = aroom.ly; y2 = aroom.hy; break;
case DIR_E: x1 = x2 = aroom.hx + 1; y1 = aroom.ly; y2 = aroom.hy; break;
default: return false;
}
// Try random points
let tryct = 0;
let x, y;
do {
x = (x2 - x1) ? rn1(x2 - x1 + 1, x1) : x1;
y = (y2 - y1) ? rn1(y2 - y1 + 1, y1) : y1;
const xp = { v: x }, yp = { v: y };
if (finddpos_shift(xp, yp, dir, aroom)) {
cc.x = xp.v; cc.y = yp.v;
return true;
}
} while (++tryct < 20);
// Exhaustive search
for (x = x1; x <= x2; x++)
for (y = y1; y <= y2; y++) {
const xp = { v: x }, yp = { v: y };
if (finddpos_shift(xp, yp, dir, aroom)) {
cc.x = xp.v; cc.y = yp.v;
return true;
}
}
cc.x = x1; cc.y = y1;
return false;
}
// C ref: mklev.c:1783 maybe_sdoor()
// RNG: rn2(max(2, chance))
function maybe_sdoor(chance) {
// C ref: mklev.c:1795 — uses depth(&u.uz), not dlevel
const d = depth_of_level(game.u?.uz);
return (d > 2) && !rn2(Math.max(2, chance));
}
// C ref: sp_lev.c:2549 dig_corridor()
// RNG: rn2(35) for nxcor abort, rn2(50) for boulder, rn2(dix-diy+1) / rn2(diy-dix+1) for direction
export function dig_corridor(org, dest, npoints_out, nxcor, ftyp, btyp) {
pushRngLogEntry('>dig_corridor');
const result = _dig_corridor_impl(org, dest, npoints_out, nxcor, ftyp, btyp);
pushRngLogEntry(`<dig_corridor=${result ? 1 : 0}`);
return result;
}
function _dig_corridor_impl(org, dest, npoints_out, nxcor, ftyp, btyp) {
const map = game.level;
let dx = 0, dy = 0;
let xx = org.x, yy = org.y;
const tx = dest.x, ty = dest.y;
let npoints = 0;
if (npoints_out) npoints_out.v = 0;
if (xx <= 0 || yy <= 0 || tx <= 0 || ty <= 0
|| xx > COLNO - 1 || tx > COLNO - 1 || yy > ROWNO - 1 || ty > ROWNO - 1)
return false;
if (tx > xx) dx = 1;
else if (ty > yy) dy = 1;
else if (tx < xx) dx = -1;
else dy = -1;
xx -= dx;
yy -= dy;
let cct = 0;
while (xx !== tx || yy !== ty) {
if (cct++ > 500 || (nxcor && !rn2(35)))
return false;
xx += dx;
yy += dy;
if (xx >= COLNO - 1 || xx <= 0 || yy <= 0 || yy >= ROWNO - 1)
return false;
const crm = map.at(xx, yy);
if (!crm) return false;
if (crm.typ === btyp) {
if (ftyp === CORR && maybe_sdoor(100)) {
npoints++;
if (npoints_out) npoints_out.v = npoints;
crm.typ = SCORR;
} else {
npoints++;
if (npoints_out) npoints_out.v = npoints;
crm.typ = ftyp;
if (nxcor && !rn2(50)) {
try { mksobj_at(BOULDER, xx, yy, true, false); } catch (_e) {}
}
}
} else if (crm.typ !== ftyp && crm.typ !== SCORR) {
return false;
}
// Find next corridor position
let dix = Math.abs(xx - tx);
let diy = Math.abs(yy - ty);
if ((dix > diy) && diy && !rn2(dix - diy + 1)) {
dix = 0;
} else if ((diy > dix) && dix && !rn2(diy - dix + 1)) {
diy = 0;
}
// Change direction?
if (dy && dix > diy) {
const ddx = (xx > tx) ? -1 : 1;
const ncr = map.at(xx + ddx, yy);
if (ncr && (ncr.typ === btyp || ncr.typ === ftyp || ncr.typ === SCORR)) {
dx = ddx; dy = 0; continue;
}
} else if (dx && diy > dix) {
const ddy = (yy > ty) ? -1 : 1;
const ncr = map.at(xx, yy + ddy);
if (ncr && (ncr.typ === btyp || ncr.typ === ftyp || ncr.typ === SCORR)) {
dy = ddy; dx = 0; continue;
}
}
// Continue straight?
const straight = map.at(xx + dx, yy + dy);
if (straight && (straight.typ === btyp || straight.typ === ftyp || straight.typ === SCORR))
continue;
// Must change direction
if (dx) { dx = 0; dy = (ty < yy) ? -1 : 1; }
else { dy = 0; dx = (tx < xx) ? -1 : 1; }
const alt = map.at(xx + dx, yy + dy);
if (alt && (alt.typ === btyp || alt.typ === ftyp || alt.typ === SCORR))
continue;
dy = -dy; dx = -dx;
}
if (npoints_out) npoints_out.v = npoints;
return true;
}
// C ref: mklev.c:604 dosdoor()
// RNG: multiple rn2 calls for door state
async function dosdoor(x, y, aroom, type) {
const map = game.level;
const loc = map.at(x, y);
if (!loc) return;
const shdoor = in_rooms(x, y, SHOPBASE).length > 0;
if (!IS_WALL(loc.typ)) type = DOOR;
loc.typ = type;
if (type === DOOR) {
if (!rn2(3)) {
if (!rn2(5))
loc.flags = D_ISOPEN;
else if (!rn2(6))
loc.flags = D_LOCKED;
else
loc.flags = D_CLOSED;
if (loc.flags !== D_ISOPEN && !shdoor
&& level_difficulty() >= 5 && !rn2(25))
loc.flags |= D_TRAPPED;
} else {
loc.flags = shdoor ? D_ISOPEN : D_NODOOR;
}
if (loc.flags & D_TRAPPED) {
// C ref: mklev.c:653-662 — trapped door becomes mimic
const mv = game.mvitals || [];
const allMimicsGone = !!(mv[PM_SMALL_MIMIC]?.mvflags & G_GONE)
&& !!(mv[PM_LARGE_MIMIC]?.mvflags & G_GONE)
&& !!(mv[PM_GIANT_MIMIC]?.mvflags & G_GONE);
if (level_difficulty() >= 9 && !rn2(5) && !allMimicsGone) {
loc.flags = D_NODOOR;
await makemon(mkclass(S_MIMIC, 0), x, y, 0);
}
}
} else { // SDOOR
if (shdoor || !rn2(5))
loc.flags = D_LOCKED;
else
loc.flags = D_CLOSED;
if (!shdoor && level_difficulty() >= 4 && !rn2(20))
loc.flags |= D_TRAPPED;
}
add_door(x, y, aroom);
}
// C ref: mklev.c:1789 dodoor()
export async function dodoor(x, y, aroom) {
await dosdoor(x, y, aroom, maybe_sdoor(8) ? SDOOR : DOOR);
}
// C ref: mklev.c:563 add_door()
function add_door(x, y, aroom) {
const g = game;
if (!g.level.doors) g.level.doors = [];
// Check for duplicate
for (let i = 0; i < aroom.doorct; i++) {
const d = g.level.doors[aroom.fdoor + i];
if (d && d.x === x && d.y === y) return;
}
if (aroom.doorct === 0) {
aroom.fdoor = g.level.doorindex;
}
aroom.doorct++;
// C ref: mklev.c:add_door() inserts at aroom->fdoor, shifting doors.
for (let tmp = g.level.doorindex; tmp > aroom.fdoor; tmp--) {
g.level.doors[tmp] = g.level.doors[tmp - 1];
}
// Rebase other rooms' fdoor indices that point at/after insertion point.
for (const broom of g.level.rooms || []) {
if (!broom || broom.hx <= 0 || broom === aroom || !(broom.doorct > 0)) continue;
if ((broom.fdoor ?? 0) >= aroom.fdoor) broom.fdoor++;
}
for (const room of g.level.rooms || []) {
if (!room || room.hx <= 0) continue;
for (let m = 0; m < (room.nsubrooms || 0); m++) {
const broom = room.sbrooms?.[m];
if (!broom || broom === aroom || !(broom.doorct > 0)) continue;
if ((broom.fdoor ?? 0) >= aroom.fdoor) broom.fdoor++;
}
}
g.level.doors[aroom.fdoor] = { x, y };
g.level.doorindex++;
}
// C ref: mklev.c:1795 bydoor() — is there a door adjacent?
function bydoor(x, y) {
const map = game.level;
for (const [dx, dy] of [[1, 0], [-1, 0], [0, 1], [0, -1]]) {
if (!isok(x + dx, y + dy)) continue;
const loc = map.at(x + dx, y + dy);
if (loc && (IS_DOOR(loc.typ) || loc.typ === SDOOR)) return true;
}
return false;
}
// C ref: mklev.c:428 join()
// Connect room a to room b with a corridor.
async function join(a, b, nxcor) {
pushRngLogEntry('>join');
const g = game;
const croom = g.level.rooms[a];
const troom = g.level.rooms[b];
if (!croom || !troom) { pushRngLogEntry('<join'); return; }
if (!croom.needjoining || !troom.needjoining) { pushRngLogEntry('<join'); return; }
if (troom.hx < 0 || croom.hx < 0) { pushRngLogEntry('<join'); return; }
let dx, dy;
const cc = { x: 0, y: 0 }, tt = { x: 0, y: 0 };
if (troom.lx > croom.hx) {
dx = 1; dy = 0;
if (!finddpos(cc, DIR_E, croom)) { pushRngLogEntry('<join'); return; }
if (!finddpos(tt, DIR_W, troom)) { pushRngLogEntry('<join'); return; }
} else if (troom.hy < croom.ly) {
dy = -1; dx = 0;
if (!finddpos(cc, DIR_N, croom)) { pushRngLogEntry('<join'); return; }
if (!finddpos(tt, DIR_S, troom)) { pushRngLogEntry('<join'); return; }
} else if (troom.hx < croom.lx) {
dx = -1; dy = 0;
if (!finddpos(cc, DIR_W, croom)) { pushRngLogEntry('<join'); return; }
if (!finddpos(tt, DIR_E, troom)) { pushRngLogEntry('<join'); return; }
} else {
dy = 1; dx = 0;
if (!finddpos(cc, DIR_S, croom)) { pushRngLogEntry('<join'); return; }
if (!finddpos(tt, DIR_N, troom)) { pushRngLogEntry('<join'); return; }
}
const xx = cc.x, yy = cc.y;
const tx = tt.x - dx, ty = tt.y - dy;
if (nxcor) {
const loc = g.level.at(xx + dx, yy + dy);
if (loc && loc.typ !== STONE) { pushRngLogEntry('<join'); return; }
}
const org = { x: xx + dx, y: yy + dy };
const dest = { x: tx, y: ty };
const npoints = { v: 0 };
const arboreal = false; // TODO: level.flags.arboreal
const ftyp = arboreal ? ROOM : CORR;
const dig_result = dig_corridor(org, dest, npoints, nxcor, ftyp, STONE);
if ((npoints.v > 0) && (okdoor(xx, yy) || !nxcor))
await dodoor(xx, yy, croom);
if (!dig_result) { pushRngLogEntry('<join'); return; }
if (okdoor(tt.x, tt.y) || !nxcor)
await dodoor(tt.x, tt.y, troom);
if (g.smeq[a] < g.smeq[b])
g.smeq[b] = g.smeq[a];
else
g.smeq[a] = g.smeq[b];
pushRngLogEntry('<join');
}
// C ref: mklev.c:1987 make_niches()
// RNG: rnd() for count, rn2(6) for level teleport/trapdoor decisions
async function make_niches() {
const g = game;
const dep = g.u?.uz?.dlevel ?? 1;
let ct = rnd(Math.trunc(g.level.nroom / 2) + 1);
let ltptr = (dep > 15);
let vamp = (dep > 5 && dep < 25);
while (ct--) {
if (ltptr && !rn2(6)) {
ltptr = false;
await makeniche(LEVEL_TELEP);
} else if (vamp && !rn2(6)) {
vamp = false;
await makeniche(TRAPDOOR);
} else {
await makeniche(/* NO_TRAP */ 0);
}
}
}
function cardinal_nextto_room(aroom, x, y) {
const map = game.level;
const rmno = game.level.rooms.indexOf(aroom) + ROOMOFFSET;
if (isok(x - 1, y)) {
const loc = map.at(x - 1, y);
if (loc && !loc.edge && loc.roomno === rmno) return true;
}
if (isok(x + 1, y)) {
const loc = map.at(x + 1, y);
if (loc && !loc.edge && loc.roomno === rmno) return true;
}
if (isok(x, y - 1)) {
const loc = map.at(x, y - 1);
if (loc && !loc.edge && loc.roomno === rmno) return true;
}
if (isok(x, y + 1)) {
const loc = map.at(x, y + 1);
if (loc && !loc.edge && loc.roomno === rmno) return true;
}
return false;
}
function place_niche(aroom) {
const dd = { x: 0, y: 0 };
let dy;
if (rn2(2)) {
dy = 1;
if (!finddpos(dd, DIR_S, aroom)) return null;
} else {
dy = -1;
if (!finddpos(dd, DIR_N, aroom)) return null;
}
const xx = dd.x;
const yy = dd.y;
const niche = game.level.at(xx, yy + dy);
const back = game.level.at(xx, yy - dy);
if (!niche || niche.typ !== STONE) return null;
if (!back || IS_POOL(back.typ) || IS_FURNITURE(back.typ)) return null;
if (!cardinal_nextto_room(aroom, xx, yy)) return null;
return { dy, xx, yy };
}
// C ref: mklev.c:1925 makeniche()
// RNG: rn2(nroom) for room, rn2(5) for doorct check, place_niche with rn2(2),
// rn2(4) for secret vs open, rn2(7) + rn2(5) for door type, etc.
async function makeniche(trap_type) {
const g = game;
let vct = 8;
while (vct--) {
const aroom = g.level.rooms[rn2(g.level.nroom)];
if (!aroom || aroom.rtype !== OROOM) continue;
if (aroom.doorct === 1 && rn2(5)) continue;
const niche = place_niche(aroom);
if (!niche) continue;
const { dy, xx, yy } = niche;
const rm = g.level.at(xx, yy + dy);
if (!rm) continue;
if (trap_type || !rn2(4)) {
rm.typ = SCORR;
if (trap_type) {
let actualTrap = trap_type;
if (is_hole(actualTrap) && !Can_fall_thru(g.u?.uz)) {
actualTrap = ROCKTRAP;
}
const ttmp = await maketrap(xx, yy + dy, actualTrap);
if (ttmp) {
if (actualTrap !== ROCKTRAP)
ttmp.once = true;
// C ref: mklev.c:757-762 — trap_engravings + wipe_engr_at
const TRAP_ENGRAVINGS = {
14: 'Vlad was here', // TRAPDOOR
15: 'ad aerarium', // TELEP_TRAP
16: 'ad aerarium', // LEVEL_TELEP
};
const engrText = TRAP_ENGRAVINGS[trap_type];
if (engrText) {
make_engr_at(xx, yy - dy, engrText, null, 0, DUST);
// C ref: mklev.c:771 — wipe_engr_at ages the engraving
wipe_engr_at(xx, yy - dy, 5, false);
}
}
}
await dosdoor(xx, yy, aroom, SDOOR);
} else {
rm.typ = CORR;
if (rn2(7)) {
await dosdoor(xx, yy, aroom, rn2(5) ? SDOOR : DOOR);
} else {
const loc = g.level.at(xx, yy);
if (!rn2(5) && loc && IS_WALL(loc.typ)) {
loc.typ = IRONBARS;
if (rn2(3)) {
// C ref: mklev.c:776 — human corpse in iron bar niche
const humanPtr = mkclass(S_HUMAN, 0);
if (humanPtr) {
const pm = mons.indexOf(humanPtr);
if (pm >= 0) mkcorpse_at_niche(pm, xx, yy + dy);
}
}
}
if (!g.level.flags.noteleport) {
try { mksobj_at(SCR_TELEPORTATION, xx, yy + dy, true, false); } catch (_e) {}
}
if (!rn2(3)) {
try { mkobj_at(RANDOM_CLASS, xx, yy + dy, true); } catch (_e) {}
}
}
}
return;
}
}
// C ref: mklev.c — okdoor()
function okdoor(x, y) {
const map = game.level;
const loc = map.at(x, y);
if (!loc) return false;
if (!(loc.typ === HWALL || loc.typ === VWALL)) return false;
if (bydoor(x, y)) return false;
return (
(isok(x - 1, y) && !IS_OBSTRUCTED(map.at(x - 1, y).typ))
|| (isok(x + 1, y) && !IS_OBSTRUCTED(map.at(x + 1, y).typ))
|| (isok(x, y - 1) && !IS_OBSTRUCTED(map.at(x, y - 1).typ))
|| (isok(x, y + 1) && !IS_OBSTRUCTED(map.at(x, y + 1).typ))
);
}
// C ref: mklev.c:511 makecorridors()
// RNG: rn2(50) break, rn2(nroom) for extra corridors.
export async function makecorridors() {
const g = game;
let any = true;
// Initialize smeq — each room is its own equivalence class
for (let i = 0; i < g.level.nroom; i++)
g.smeq[i] = i;
// Connect adjacent rooms
for (let a = 0; a < g.level.nroom - 1; a++) {
await join(a, a + 1, false);
if (!rn2(50)) break;
}
// Connect rooms 2 apart if not already connected
for (let a = 0; a < g.level.nroom - 2; a++)
if (g.smeq[a] !== g.smeq[a + 2])
await join(a, a + 2, false);
// Connect any remaining disconnected rooms
for (let a = 0; any && a < g.level.nroom; a++) {
any = false;
for (let b = 0; b < g.level.nroom; b++)
if (g.smeq[a] !== g.smeq[b]) {
await join(a, b, false);
any = true;
}
}
// Extra random corridors
if (g.level.nroom > 2) {
const count = rn2(g.level.nroom) + 4;
for (let i = 0; i < count; i++) {
let a = rn2(g.level.nroom);
let b = rn2(g.level.nroom - 2);
if (b >= a) b += 2;
await join(a, b, true);
}
}
}
// somex / somey — imported from mkroom.js
export function occupied(x, y) {
const loc = game.level.at(x, y);
if (!loc) return false;
return !!(game.level.trapAt(x, y)
|| IS_FURNITURE(loc.typ)
|| loc.typ === LAVAPOOL
|| IS_POOL(loc.typ));
}
// NOTE: differs from canonical mkroom.js — local lacks irregular room handling
// C ref: mkroom.c:694 somexy() — random point in room, not in subroom
// C ref: mkroom.c:744 somexyspace() — accessible point in room
// somexyspace — canonical version imported from mkroom.js
// Do NOT duplicate here. See LORE "Duplicate somexyspace helpers."
// C ref: mklev.c:2189 generate_stairs_room_good()
function generate_stairs_room_good(croom, phase) {
if (!croom || croom.hx < 0) return false;
if (!croom.needjoining && phase >= 0) return false;
// C ref: mkroom.c has_dnstairs()/has_upstairs() — scan the stairway list.
const inRoom = (sx, sy) => (
sx >= croom.lx && sx <= croom.hx
&& sy >= croom.ly && sy <= croom.hy
);
let hasDown = false;
let hasUp = false;
for (let st = game.stairs; st; st = st.next) {
if (!inRoom(st.sx, st.sy)) continue;
if (st.up) hasUp = true;
else hasDown = true;
if (hasDown && hasUp) break;
}
// Fallback for partially populated stairway lists: derive room stair
// occupancy from map cells and canonical up/down stair markers.
if (!(hasDown && hasUp) && game.level?.at) {
const up = game.level.upstair || null;
const down = game.level.dnstair || null;
for (let yy = croom.ly; yy <= croom.hy && !(hasDown && hasUp); yy++) {
for (let xx = croom.lx; xx <= croom.hx; xx++) {
const loc = game.level.at(xx, yy);
if (!loc) continue;
if (loc.typ !== STAIRS && loc.typ !== LADDER) continue;
if (up && up.x === xx && up.y === yy) hasUp = true;
if (down && down.x === xx && down.y === yy) hasDown = true;
if (loc.typ === LADDER) {
if (loc.ladder === 1) hasUp = true;
if (loc.ladder === 2) hasDown = true;
}
}
}
}
// Exclude rooms that already have stairs (unless phase < 1)
if (phase >= 1 && (hasDown || hasUp))
return false;
// C ref: mklev.c:2223 — OROOM always ok, THEMEROOM ok at phase < 2, else reject
if (croom.rtype !== OROOM && !(phase < 2 && croom.rtype === THEMEROOM))
return false;
return true;
}
// C ref: mklev.c:2208 generate_stairs_find_room() — RNG: rn2(ai) or rn2(nroom)
function generate_stairs_find_room() {
const g = game;
if (!g.level.nroom) return null;
const debugGsfr = (typeof process !== 'undefined' && process?.env?.DEBUG_GSFR === '1');
for (let phase = 2; phase > -1; phase--) {
const candidates = [];
for (let i = 0; i < g.level.nroom; i++)
if (generate_stairs_room_good(g.level.rooms[i], phase))
candidates.push(i);
if (debugGsfr) {
console.error(`gsfr phase=${phase} ai=${candidates.length} nroom=${g.level.nroom}`);
}
if (candidates.length > 0) {
const pick = rn2(candidates.length);
if (debugGsfr) {
console.error(`gsfr pick phase=${phase} idx=${pick} room=${candidates[pick]}`);
}
return g.level.rooms[candidates[pick]];
}
}
if (debugGsfr) {
console.error('gsfr fallback');
}
return g.level.rooms[rn2(g.level.nroom)];
}
// C ref: mklev.c:2165 mkstairs()
function mkstairs(x, y, up, croom, _force) {
const g = game;
const map = g.level;
const loc = map.at(x, y);
if (loc) {
loc.typ = STAIRS;
// C ref: mklev.c:2193 sets levl[x][y].ladder for every stair.
loc.ladder = up ? 1 : 2; // LA_UP=1, LA_DOWN=2
}
// Track stairs on the room for generate_stairs_room_good
if (croom) {
if (up) croom._has_upstairs = true;
else croom._has_dnstairs = true;
}
// C ref: mklev.c:2183 — register in stairway linked list
const dest = {
dnum: g.u?.uz?.dnum ?? 0,
dlevel: (g.u?.uz?.dlevel ?? 1) + (up ? -1 : 1),
};
stairway_add(x, y, !!up, false, dest);
// Legacy: also store on map for backwards compat
if (up) {
map.upstair = { x, y };
} else {
map.dnstair = { x, y };
}
}
// C ref: mklev.c:2240 generate_stairs()
// RNG: rn2 in generate_stairs_find_room, rn1 in somexy/somexyspace
async function generate_stairs() {
const g = game;
const pos = { x: 0, y: 0 };
// Down stairs (skip if bottom level)
// For level 1, this is not the bottom, so we make down stairs
{
const croom = generate_stairs_find_room();
if (croom) {
if (!somexyspace(croom, pos)) {
pos.x = somex(croom);
pos.y = somey(croom);
}
mkstairs(pos.x, pos.y, 0, croom, false);
}
}
// Up stairs (skip if level 1 — but only for non-branch entries)
// For DoD level 1, up stairs come from branch placement, not here
if ((g.u?.uz?.dlevel ?? 1) !== 1) {
const croom = generate_stairs_find_room();
if (croom) {
if (!somexyspace(croom, pos)) {
pos.x = somex(croom);
pos.y = somey(croom);
}
mkstairs(pos.x, pos.y, 1, croom, false);
}
}
}
// C ref: mkmaze.c:1126 makemaz("") — generate maze for non-special Gehennom
// and below-Medusa levels that don't have a level script.
async function makemaz_empty() {
const g = game;
g.level.flags.is_maze_lev = true;
g.level.flags.corrmaze = !rn2(3);
// C ref: mkmaze.c:1200-1204 — choose maze style
// Invocation level gets fixed 1x1 corridors; others get random.
// C: if (!Invocation_lev(&u.uz) && rn2(2)) — short-circuits rn2(2) on Invocation level
if (!Invocation_lev(g.u?.uz) && rn2(2)) {
// C ref: create_maze(-1, -1, !rn2(5))
// C evaluates !rn2(5) as a parameter BEFORE create_maze executes,
// so rn2(5) is consumed BEFORE rnd(4) for corrwid/wallthick.
const rmdeadends = !rn2(5);
const corrwid = rnd(4);
let wallthick = rnd(4) - corrwid;
if (wallthick < 1) wallthick = 1;
else if (wallthick > 5) wallthick = 5;
const cw = Math.max(1, Math.min(5, corrwid));
const scale = cw + wallthick;
const rdx = Math.trunc((g.x_maze_max ?? ((COLNO - 1) & ~1)) / scale);
const rdy = Math.trunc((g.y_maze_max ?? ((ROWNO - 1) & ~1)) / scale);
// Fill maze grid
if (g.level.flags.corrmaze) {
for (let x = 2; x < rdx * 2; x++)
for (let y = 2; y < rdy * 2; y++) {
const loc = g.level.at(x, y);
if (loc) loc.typ = STONE;
}
} else {
for (let x = 2; x <= rdx * 2; x++)
for (let y = 2; y <= rdy * 2; y++) {
const loc = g.level.at(x, y);
if (loc) loc.typ = ((x % 2) && (y % 2)) ? STONE : HWALL;
}
}
const savedXmax = g.x_maze_max, savedYmax = g.y_maze_max;
g.x_maze_max = rdx * 2;
g.y_maze_max = rdy * 2;
const mx = 3 + 2 * rn2((g.x_maze_max >> 1) - 1);
const my = 3 + 2 * rn2((g.y_maze_max >> 1) - 1);
walkfrom(mx, my, 0);
if (rmdeadends) maze_remove_deadends(g.level.flags.corrmaze ? CORR : ROOM);
g.x_maze_max = savedXmax;
g.y_maze_max = savedYmax;
} else {
// Fixed 1x1 corridors (Invocation level style)
const xMazeMax = g.x_maze_max ?? ((COLNO - 1) & ~1);
const yMazeMax = g.y_maze_max ?? ((ROWNO - 1) & ~1);
for (let x = 2; x <= xMazeMax; x++)
for (let y = 2; y <= yMazeMax; y++) {
const loc = g.level.at(x, y);
if (loc) loc.typ = ((x % 2) && (y % 2)) ? STONE : HWALL;
}
const savedXmax = g.x_maze_max, savedYmax = g.y_maze_max;
g.x_maze_max = xMazeMax;
g.y_maze_max = yMazeMax;
const mx = 3 + 2 * rn2((g.x_maze_max >> 1) - 1);
const my = 3 + 2 * rn2((g.y_maze_max >> 1) - 1);
walkfrom(mx, my, 0);
g.x_maze_max = savedXmax;
g.y_maze_max = savedYmax;
}
// C ref: mkmaze.c:1206-1207 — wallification for non-corrmaze
if (!g.level.flags.corrmaze)
wallification(2, 2, g.x_maze_max ?? ((COLNO - 1) & ~1), g.y_maze_max ?? ((ROWNO - 1) & ~1));
// C ref: mkmaze.c:1209-1217 — stairs via mazexy
// Up stairs
const mm1 = mazexy();
if (mm1) mkstairs(mm1.x, mm1.y, 1, null, false);
// Down stairs (not on Invocation level — that gets vibrating square)
if (!Invocation_lev(g.u?.uz)) {
const mm2 = mazexy();
if (mm2) mkstairs(mm2.x, mm2.y, 0, null, false);
} else {
// C ref: mkmaze.c:1215-1217 — vibrating square on Invocation level
// TODO: pick_vibrasquare_location() + maketrap(VIBRATING_SQUARE)
}
// C ref: mkmaze.c:1220 — place_branch
const branchp = _is_branchlev();
if (branchp) {
await place_branch(branchp);
}
// C ref: mkmaze.c:1222 — populate_maze (monsters, objects, traps)
await populate_maze();
}
// C ref: mkmaze.c:1316 mazexy — random ROOM/CORR position in completed maze
function mazexy() {
const xMazeMax = game.x_maze_max ?? ((COLNO - 1) & ~1);
const yMazeMax = game.y_maze_max ?? ((ROWNO - 1) & ~1);
const allowedtyp = game.level?.flags?.corrmaze ? CORR : ROOM;
let cpt = 0;
do {
const x = rnd(xMazeMax);
const y = rnd(yMazeMax);
const loc = game.level?.at(x, y);
if (loc && loc.typ === allowedtyp) {
return { x, y };
}
} while (++cpt < 100);
// 100 random attempts failed; systematically try every possibility
for (let x = 1; x <= xMazeMax; x++)
for (let y = 1; y <= yMazeMax; y++) {
const loc = game.level?.at(x, y);
if (loc && loc.typ === allowedtyp)
return { x, y };
}
// Fallback (shouldn't happen)
return { x: 3, y: 3 };
}
// C ref: mkmaze.c:1098 populate_maze — add monsters/objects/traps to maze
async function populate_maze() {
const g = game;
let mm;
// C ref: mkmaze.c:1103 — random gems/objects
for (let i = rn1(8, 11); i; i--) {
mm = mazexy();
mkobj_at(rn2(2) ? GEM_CLASS : RANDOM_CLASS, mm.x, mm.y, true);
}
// C ref: mkmaze.c:1107 — boulders
for (let i = rn1(10, 2); i; i--) {
mm = mazexy();
mksobj_at(BOULDER, mm.x, mm.y, true, false);
}
// C ref: mkmaze.c:1111 — minotaurs
for (let i = rn2(3); i; i--) {
mm = mazexy();
await makemon(mons[PM_MINOTAUR], mm.x, mm.y, 0);
}
// C ref: mkmaze.c:1115 — random monsters
for (let i = rn1(5, 7); i; i--) {
mm = mazexy();
await makemon(null, mm.x, mm.y, 0);
}
// C ref: mkmaze.c:1119 — gold
for (let i = rn1(6, 7); i; i--) {
mm = mazexy();
mkgold(0, mm.x, mm.y);
}
// C ref: mkmaze.c:1123 — traps
for (let i = rn1(6, 7); i; i--) {
await mktrap_maze();
}
}
// C ref: mklev.c:2036 mktrap() with MKTRAP_MAZEFLAG — place a random trap in maze
async function mktrap_maze() {
const g = game;
let kind;
// C ref: mklev.c:2064-2068 — Gehennom fire trap bias
if (in_hell(g.u?.uz) && !rn2(5)) {
kind = FIRE_TRAP;
} else {
do {
kind = traptype_rnd();
} while (kind === NO_TRAP);
}
// C ref: mklev.c:2070 — hole fallthrough check
if (is_hole(kind) && !Can_fall_thru(g.u?.uz))
kind = ROCKTRAP;
// C ref: mklev.c:2083-2093 — find position via mazexy with retry
let tryct = 0;
const avoid_boulder = is_pit(kind) || is_hole(kind);
let m;
do {
if (++tryct > 200) return;
m = mazexy();
} while (occupied(m.x, m.y)
|| (avoid_boulder && sobj_at(BOULDER, m.x, m.y)));
const trap = await maketrap(m.x, m.y, kind);
kind = trap ? trap.ttyp : NO_TRAP;
// C ref: mklev.c:2104-2105 — create giant spider on web trap
if (kind === WEB) {
await makemon(mons[PM_GIANT_SPIDER], m.x, m.y, 0);
}
// C ref: mklev.c:2135-2152 — trap victim during level gen
const lvl = level_difficulty();
if (g.in_mklev
&& kind !== NO_TRAP
&& lvl <= rnd(4)
&& kind !== SQKY_BOARD && kind !== RUST_TRAP
&& !(kind === ROLLING_BOULDER_TRAP
&& trap.launch?.x === trap.tx && trap.launch?.y === trap.ty)
&& !is_pit(kind) && (kind < HOLE || kind === MAGIC_TRAP)) {
if (kind === LANDMINE) {
trap.ttyp = PIT;
trap.tseen = true;
}
mktrap_victim(trap);
}
}
// ============================================================
// fill_ordinary_room — populate rooms with monsters/items/traps
// ============================================================
const NO_TRAP = 0;
const TRAPNUM = 26; // number of trap types
// C ref: mklev.c:1928 traptype_rnd()
// RNG: rnd(TRAPNUM - 1), and sometimes the result is NO_TRAP requiring retry
function traptype_rnd() {
const lvl = level_difficulty();
let kind = rnd(TRAPNUM - 1);
switch (kind) {
case TRAPPED_DOOR:
case TRAPPED_CHEST:
case MAGIC_PORTAL:
case VIBRATING_SQUARE:
kind = NO_TRAP;
break;
case ROLLING_BOULDER_TRAP:
case SLP_GAS_TRAP:
if (lvl < 2)
kind = NO_TRAP;
break;
case LEVEL_TELEP:
if (lvl < 5 || game.level?.flags?.noteleport
|| Is_knox_level(game.u?.uz))
kind = NO_TRAP;
break;
case SPIKED_PIT:
if (lvl < 5)
kind = NO_TRAP;
break;
case LANDMINE:
if (lvl < 6)
kind = NO_TRAP;
break;
case WEB:
if (lvl < 7)
kind = NO_TRAP;
break;
case STATUE_TRAP:
case POLY_TRAP:
if (lvl < 8)
kind = NO_TRAP;
break;
case FIRE_TRAP:
if (!in_hell(game.u?.uz))
kind = NO_TRAP;
break;
case TELEP_TRAP:
if (game.level?.flags?.noteleport)
kind = NO_TRAP;
break;
case HOLE:
if (rn2(7))
kind = NO_TRAP;
break;
}
return kind;
}
function mkcorpse_at(pm, x, y) {
const corpse = mkcorpstat(CORPSE, null, pm, x, y, CORPSTAT_INIT);
corpse.age -= (TAINT_AGE + 1);
return corpse;
}
// C ref: mklev.c:786 — iron bar niche corpse creation.
// C passes TRUE (1) as corpstatflags: init = (1 & 0x08) = false, spe = (1 & 0x07) = 1 (FEMALE).
// Using CORPSTAT_FEMALE (1) to match C's TRUE exactly.
function mkcorpse_at_niche(pm, x, y) {
return mkcorpstat(CORPSE, null, pm, x, y, CORPSTAT_FEMALE);
}
// C ref: mklev.c:2297 find_okay_roompos()
function find_okay_roompos(croom, crd) {
let tryct = 0;
do {
if (++tryct > 200)
return false;
if (!somexyspace(croom, crd))
return false;
} while (occupied(crd.x, crd.y) || bydoor(crd.x, crd.y));
return true;
}
export function mktrap_victim(trap) {
let otmp = null;
let victim_mnum;
const lvl = game.u?.uz?.dlevel ?? 1;
const kind = trap.ttyp;
const x = trap.tx;
const y = trap.ty;
switch (kind) {
case ARROW_TRAP:
otmp = mksobj(ARROW, true, false);
otmp.opoisoned = 0;
break;
case DART_TRAP:
otmp = mksobj(DART, true, false);
break;
case ROCKTRAP:
otmp = mksobj(ROCK, true, false);
break;
default:
break;
}
if (otmp)
place_object(otmp, x, y);
do {
let poss_class = RANDOM_CLASS;
switch (rn2(4)) {
case 0: poss_class = WEAPON_CLASS; break;
case 1: poss_class = TOOL_CLASS; break;
case 2: poss_class = FOOD_CLASS; break;
case 3: poss_class = GEM_CLASS; break;
}
otmp = mkobj(poss_class, false);
curse(otmp);
place_object(otmp, x, y);
} while (!rn2(5));
switch (rn2(15)) {
case 0:
victim_mnum = PM_ELF;
if (kind === SLP_GAS_TRAP && !(lvl <= 2 && rn2(2)))
victim_mnum = PM_HUMAN;
break;
case 1:
case 2:
victim_mnum = PM_DWARF;
break;
case 3:
case 4:
case 5:
victim_mnum = PM_ORC;
break;
case 6:
case 7:
case 8:
case 9:
victim_mnum = PM_GNOME;
if (!rn2(10)) {
otmp = mksobj(rn2(4) ? TALLOW_CANDLE : WAX_CANDLE, true, false);
otmp.quan = 1;
curse(otmp);
place_object(otmp, x, y);
}
break;
default:
victim_mnum = PM_HUMAN;
break;
}
if (victim_mnum === PM_HUMAN && rn2(25))
victim_mnum = rn1(PM_WIZARD - PM_ARCHEOLOGIST, PM_ARCHEOLOGIST);
mkcorpse_at(victim_mnum, x, y);
}
// C ref: mklev.c:2026 mktrap()
// RNG: traptype_rnd (rnd), somexyspace (rn1+rn2), maketrap
async function mktrap_room(croom) {
const lvl = level_difficulty();
let kind;
// Select trap type
do {
kind = traptype_rnd();
} while (kind === NO_TRAP);
if (is_hole(kind) && !Can_fall_thru(game.u?.uz))
kind = ROCKTRAP;
// Find position in room
const pos = { x: 0, y: 0 };
if (!somexyspace(croom, pos)) return;
const trap = await maketrap(pos.x, pos.y, kind);
kind = trap ? trap.ttyp : NO_TRAP;
// C ref: mklev.c:2104-2105 — create giant spider on web trap
if (kind === WEB) {
await makemon(mons[PM_GIANT_SPIDER], pos.x, pos.y, 0);
}
// C ref: mklev.c:2118-2120 — tutorial return portal destination.
if (trap && kind === MAGIC_PORTAL
&& ((game.u?.ucamefrom?.dnum || 0) || (game.u?.ucamefrom?.dlevel || 0))) {
trap.dst.dnum = game.u.ucamefrom.dnum;
trap.dst.dlevel = game.u.ucamefrom.dlevel;
}
// C ref: mklev.c:2135-2152 — dead monster victim on trap during level gen
if (game.in_mklev
&& kind !== NO_TRAP
&& lvl <= rnd(4)
&& kind !== SQKY_BOARD && kind !== RUST_TRAP
&& !(kind === ROLLING_BOULDER_TRAP
&& trap.launch?.x === trap.tx && trap.launch?.y === trap.ty)
&& !is_pit(kind) && (kind < HOLE || kind === MAGIC_TRAP)) {
if (kind === LANDMINE) {
trap.ttyp = PIT;
trap.tseen = true;
}
mktrap_victim(trap);
}
}
// C ref: mklev.c mkfount()
// RNG: somexyspace for position
// C ref: mklev.c:2343 mkgrave()
// RNG: rn2(10) dobell, somexyspace, rn2(3) gold, rn2(5) buried objects
function mkgrave(croom) {
if (croom.rtype !== OROOM) return;
const dobell = !rn2(10);
const pos = { x: 0, y: 0 };
if (!find_okay_roompos(croom, pos)) return;
// C ref: engrave.c:1687 make_grave()
make_grave(pos.x, pos.y, dobell ? 'Saved by the bell!' : null);
// Possibly fill with gold
if (!rn2(3)) {
try {
const gold = mksobj(GOLD_PIECE, true, false);
if (gold) {
const depth = game.u?.uz?.dlevel ?? 1;
gold.quan = rnd(20) + depth * rnd(5);
}
} catch (_e) {}
}
// Buried objects
for (let tryct = rn2(5); tryct > 0; tryct--) {
try {
const otmp = mkobj(0 /* RANDOM_CLASS */, true);
if (!otmp) break;
curse(otmp);
} catch (_e) { break; }
}
// Leave a bell if dobell
if (dobell) {
try { mksobj_at(BELL, pos.x, pos.y, true, false); } catch (_e) {}
}
}
// Engravings data from dat/engrave.txt (48 entries, matching C exactly)
// Engravings from the makedefs-processed engrave file.
// Entry 0 is the default added by makedefs (do_rnd_access_file).
// Entries "^?MAIL" and "^." from engrave.txt are EXCLUDED: makedefs'
// random_engraving and supporting data (ENGRAVINGS, getrumor_rng, etc.)
// have been moved to engrave.js which parses them from engrave_data.js.
import { maketrap } from './trap.js';
import { themeroom_fill, themerooms, themerooms_generate as themerms_generate, themerooms_post_level_generate } from './levels/themerms.js';
import { corr, makerogueghost, makeroguerooms } from './extralev.js';
function mkfount(croom) {
const pos = { x: 0, y: 0 };
if (!find_okay_roompos(croom, pos)) return;
// C ref: mklev.c:2283-2287 — create fountain
const loc = game.level?.at(pos.x, pos.y);
if (loc) {
loc.typ = FOUNTAIN;
if (!rn2(7)) loc.blessedftn = 1;
game.level.flags.nfountains++;
}
}
// C ref: mklev.c:2332 mkaltar()
function mkaltar(croom) {
if (!croom || croom.rtype !== OROOM) return;
const pos = { x: 0, y: 0 };
if (!find_okay_roompos(croom, pos)) return;
const loc = game.level?.at(pos.x, pos.y);
if (!loc) return;
// C: set_levltyp(m.x,m.y,ALTAR)
loc.typ = ALTAR;
// C: al = rn2(A_LAWFUL + 2) - 1; levl[m.x][m.y].altarmask = Align2amask(al)
const al = rn2(A_LAWFUL + 2) - 1;
const amask = Align2amask(al);
loc.flags = amask;
// Keep JS field parity for modules that read altarmask explicitly.
loc.altarmask = amask;
}
// C ref: mklev.c:929 fill_ordinary_room()
// C ref: sp_lev.c:2731 fill_special_room()
// Fills special rooms (vaults with gold, shops with stock, zoos, etc.)
// THEMEROOM already imported from const.js
async function fill_special_room(croom) {
if (!croom || croom.hx <= 0) return;
// Recurse into subrooms
for (let i = 0; i < (croom.nsubrooms || 0); i++) {
const sub = croom.sbrooms?.[i];
if (sub) await fill_special_room(sub);
}
if (croom.rtype === OROOM || croom.rtype === THEMEROOM) return;
if (croom.needfill === 0) return; // FILL_NONE
// C ref: sp_lev.c:2776-2804 — mark per-level special-room flags
// regardless of whether the room is actively filled this pass.
switch (croom.rtype) {
case VAULT:
game.level.flags.has_vault = true;
break;
case ZOO:
game.level.flags.has_zoo = true;
break;
case COURT:
game.level.flags.has_court = true;
break;
case MORGUE:
game.level.flags.has_morgue = true;
break;
case BEEHIVE:
game.level.flags.has_beehive = true;
break;
case BARRACKS:
game.level.flags.has_barracks = true;
break;
case TEMPLE:
game.level.flags.has_temple = true;
break;
case SWAMP:
game.level.flags.has_swamp = true;
break;
default:
break;
}
if (croom.needfill === FILL_NORMAL) {
// Shop
if (croom.rtype >= SHOPBASE) {
await stock_room(croom.rtype - SHOPBASE, croom);
game.level.flags.has_shop = true;
return;
}
switch (croom.rtype) {
case VAULT:
// Fill vault with gold: mkgold(rn1(depth*100, 51), x, y) per cell
for (let x = croom.lx; x <= croom.hx; x++) {
for (let y = croom.ly; y <= croom.hy; y++) {
const depth = Math.abs(game.u?.uz?.dlevel ?? 1);
const amount = rn1(depth * 100, 51);
mkgold(amount, x, y);
}
}
break;
case COURT:
case ZOO:
case BEEHIVE:
case ANTHOLE:
case COCKNEST:
case LEPREHALL:
case MORGUE:
case BARRACKS:
await fill_zoo(croom);
break;
default:
break;
}
}
}
// C ref: dungeon.c Is_branchlev — check if current level is a branch endpoint
function _is_branchlev() {
const g = game;
const dnum = g.u?.uz?.dnum ?? 0;
const dlevel = g.u?.uz?.dlevel ?? 1;
const branches = g.branches || [];
for (const br of branches) {
if ((br.end1?.dnum === dnum && br.end1?.dlevel === dlevel)
|| (br.end2?.dnum === dnum && br.end2?.dlevel === dlevel)) {
return br;
}
}
return null;
}
// RNG: rn2(3) monster, while(!rn2(x)) traps, rn2(3) gold, rn2(10) fountain,
// rn2(60) sink, rn2(60) altar, rn2(x) grave, rn2(20) statue
async function fill_ordinary_room(croom, bonus_items) {
const g = game;
if (!croom || (croom.rtype !== OROOM && croom.rtype !== THEMEROOM))
return;
// Fill subrooms first
for (let i = 0; i < (croom.nsubrooms || 0); i++) {
const sub = croom.sbrooms?.[i];
if (sub) await fill_ordinary_room(sub, false);
}
if (croom.needfill !== FILL_NORMAL)
return;
// Put a sleeping monster inside (33% chance, or always if hero has amulet)
const pos = { x: 0, y: 0 };
if ((g.u?.uhave?.amulet || !rn2(3)) && somexyspace(croom, pos)) {
const tmonst = await makemon(null, pos.x, pos.y, MM_NOGRP);
// C ref: mklev.c:976-978 — random spider gets a web trap
if (tmonst && tmonst.data === mons[PM_GIANT_SPIDER]
&& !occupied(pos.x, pos.y)) {
await maketrap(pos.x, pos.y, WEB);
}
}
// Put traps inside
// C ref: mklev.c:981 — uses level_difficulty()
let x = 8 - Math.trunc(level_difficulty() / 6);
if (x <= 1) x = 2;
let trycnt = 0;
while (!rn2(x) && ++trycnt < 1000) {
await mktrap_room(croom);
}
// Gold
if (!rn2(3) && somexyspace(croom, pos)) {
mkgold(0, pos.x, pos.y);
}
// C ref: mklev.c:988-989 — Rogue level skips fountains, sinks,
// altars, graves, statues, and bonus items.
if (Is_rogue_level(g.u?.uz)) return;
// Fountain (10% chance)
if (!rn2(10)) {
mkfount(croom);
}
// Sink (1/60 chance)
if (!rn2(60)) {
// C ref: mklev.c:983 mksink(croom)
if (find_okay_roompos(croom, pos)) {
const sinkLoc = g.level?.at(pos.x, pos.y);
if (sinkLoc) {
sinkLoc.typ = SINK;
const lvl = g.level?.flags ?? {};
lvl.nsinks = (lvl.nsinks || 0) + 1;
}
}
}
// C ref: mklev.c:995 — mkaltar(croom)
if (!rn2(60)) {
mkaltar(croom);
}
// Grave — C ref: mklev.c:996 uses depth(&u.uz)
x = 80 - ((g.u?.uz?.dlevel ?? 1) * 2);
if (x < 2) x = 2;
if (!rn2(x)) {
mkgrave(croom);
}
// Statue (5% chance)
if (!rn2(20) && somexyspace(croom, pos)) {
mkcorpstat(STATUE, null, null, pos.x, pos.y, CORPSTAT_INIT);
}
// Bonus items (supply chest on early levels)
// C ref: mklev.c:1016-1116
let skip_chests = false;
if (bonus_items && somexyspace(croom, pos)) {
// C ref: mklev.c:1017-1025 — mines branch entry: comestible
// Is_branchlev checks if current level has a branch stairway.
// We check stairs: if any stair leads to a different dungeon, this is a branch level.
const branchp = _is_branchlev();
const mines_dnum = 2; // mines dungeon number
const oracle_dlevel = g.oracle_level?.dlevel ?? 5;
if (branchp && g.u?.uz?.dnum !== mines_dnum
&& (branchp.end1?.dnum === mines_dnum || branchp.end2?.dnum === mines_dnum)) {
// Mines entrance level — bonus comestible
// C does NOT set skip_chests here (only the supply chest path does)
mksobj_at((rn2(5) < 3) ? FOOD_RATION : rn2(2) ? CRAM_RATION : LEMBAS_WAFER,
pos.x, pos.y, true, false);
} else if (g.u?.uz?.dnum === 0 && (g.u?.uz?.dlevel ?? 1) < oracle_dlevel && rn2(3)) {
const depth = g.u?.uz?.dlevel ?? 1;
// Supply chest on early DoD levels (before oracle)
const supply_chest = mksobj_at(rn2(3) ? CHEST : LARGE_BOX,
pos.x, pos.y, false, false);
if (supply_chest) {
supply_chest.olocked = !!rn2(6);
// Fill supply chest with items
let tryct = 0;
let cursed;
do {
// 50% potion of healing, 50% random supply item
const supply_items = [
POT_EXTRA_HEALING,
POT_SPEED,
POT_GAIN_ENERGY,
SCR_ENCHANT_WEAPON,
SCR_ENCHANT_ARMOR,
SCR_CONFUSE_MONSTER,
SCR_SCARE_MONSTER,
WAN_DIGGING,
SPE_HEALING,
];
let otyp;
if (rn2(2)) {
otyp = POT_HEALING;
} else {
otyp = supply_items[rn2(supply_items.length)];
}
const otmp = mksobj(otyp, true, false);
if (otmp && otyp === POT_HEALING && rn2(2)) {
otmp.quan = 2;
otmp.owt = weight(otmp);
}
cursed = otmp?.cursed ?? false;
add_to_container(supply_chest, otmp);
if (++tryct >= 50) break;
} while (cursed || !rn2(5));
// C ref: mklev.c:1089-1116 — maybe extra random item
if (rn2(3)) {
const extra_classes = [
FOOD_CLASS, WEAPON_CLASS, ARMOR_CLASS, GEM_CLASS,
SCROLL_CLASS, POTION_CLASS, RING_CLASS,
SPBOOK_no_NOVEL, SPBOOK_no_NOVEL, SPBOOK_no_NOVEL
];
const oclass = extra_classes[rn2(extra_classes.length)];
try {
let otmp = mkobj(oclass, false);
// C: for spellbooks, bias toward lower level
// (generate again and take the lower-level one)
if (oclass === SPBOOK_no_NOVEL && otmp) {
const maxpass = (depth > 2) ? 2 : 3;
for (let pass = 1; pass <= maxpass; pass++) {
const otmp2 = mkobj(oclass, false);
if ((game.objects[otmp.otyp]?.oc_oc2 ?? 0)
<= (game.objects[otmp2.otyp]?.oc_oc2 ?? 0)) {
dealloc_obj(otmp2);
} else {
dealloc_obj(otmp);
otmp = otmp2;
}
}
}
add_to_container(supply_chest, otmp);
} catch (_e) {}
}
supply_chest.owt = weight(supply_chest);
}
skip_chests = true;
}
}
// C ref: mklev.c:1127 — box/chest check
// !rn2(nroom * 5 / 2) chance of a box or chest
if (!skip_chests && !rn2(Math.trunc(g.level.nroom * 5 / 2)) && somexyspace(croom, pos)) {
const LARGE_BOX2 = 214, CHEST2 = 215;
try { mksobj_at(rn2(3) ? LARGE_BOX2 : CHEST2, pos.x, pos.y, true, false); } catch (_e) {}
}
// C ref: mklev.c:1132-1145 — graffiti check
// CRITICAL: C calls random_engraving() FIRST, then somexyspace().
// The RNG order matters for parity.
const depth = g.u?.uz?.dlevel ?? 1;
if (!rn2(27 + 3 * Math.abs(depth))) {
// C: mesg = random_engraving(buf, pristinebuf) — text selection first
const { text: engrText, pristine: engrPristine } = random_engraving();
if (engrText) {
// C ref: mklev.c:1146-1153 — ignore somexyspace() return value and
// drive retry by selected tile type plus rn2(40).
let x = pos.x;
let y = pos.y;
do {
somexyspace(croom, pos);
x = pos.x;
y = pos.y;
const tileTyp = g.level?.at(x, y)?.typ;
if (tileTyp === ROOM) break;
} while (!rn2(40));
if (g.level?.at(x, y)?.typ === ROOM) {
// C: make_engr_at(x, y, mesg, pristinebuf, 0, MARK)
make_engr_at(x, y, engrText, engrPristine, 0, MARK);
}
}
}
// C ref: mklev.c:1148-1161 — random objects (skip_nonrogue label)
if (!rn2(3) && somexyspace(croom, pos)) {
try { mkobj_at(RANDOM_CLASS, pos.x, pos.y, true); } catch (_e) {}
let objTrycnt = 0;
while (!rn2(5)) {
if (++objTrycnt > 100) break;
if (somexyspace(croom, pos)) {
try { mkobj_at(RANDOM_CLASS, pos.x, pos.y, true); } catch (_e) {}
}
}
}
}
// C ref: mklev.c:1420 water_has_kelp()
// RNG: rn2(kelp_pool) or rn2(kelp_moat)
function water_has_kelp(x, y, kelp_pool, kelp_moat) {
const map = game.level;
const loc = map.at(x, y);
if (!loc) return false;
if (kelp_pool && (loc.typ === POOL || loc.typ === WATER)
&& !rn2(kelp_pool))
return true;
if (kelp_moat && loc.typ === MOAT && !rn2(kelp_moat))
return true;
return false;
}
export function mineralize_kelp(kelp_pool, kelp_moat, skip_lvl_checks) {
if (kelp_pool < 0) kelp_pool = 10;
if (kelp_moat < 0) kelp_moat = 30;
// Place kelp in water (skip for endgame)
if (!skip_lvl_checks) {
// In_endgame check — not on level 1
}
for (let x = 2; x < COLNO - 2; x++)
for (let y = 1; y < ROWNO - 1; y++)
if (water_has_kelp(x, y, kelp_pool, kelp_moat)) {
try { mksobj_at(KELP_FROND, x, y, true, false); } catch (_e) {}
}
}
// C ref: mklev.c:1439 mineralize()
// Places gold and gems in stone walls. Heavy RNG consumer.
export function mineralize(kelp_pool, kelp_moat, goldprob, gemprob, skip_lvl_checks) {
const map = game.level;
// C ref: mklev.c:1471-1472
// Place kelp except on the Endgame planes.
if (!skip_lvl_checks && in_endgame(game.u?.uz))
return;
mineralize_kelp(kelp_pool, kelp_moat, skip_lvl_checks);
// C ref: mklev.c mineralize() early exclusions.
// Almost all special levels are excluded.
if (!skip_lvl_checks) {
const uz = game.u?.uz;
const sp = is_special_level(uz);
if (in_hell(uz)
|| in_v_tower(uz)
|| is_rogue_level(uz)
|| !!game.level?.flags?.arboreal
|| (!!sp && !is_oracle_level(uz) && (!in_mines(uz) || !!sp.flags?.town))) {
return;
}
}
// Determine gold/gem probabilities
const absDepth = depth_of_level(game.u?.uz);
const dunLevel = game.u?.uz?.dlevel ?? 1;
if (goldprob < 0)
goldprob = 20 + Math.trunc(absDepth / 3);
if (gemprob < 0)
gemprob = Math.trunc(goldprob / 4);
// C ref: mklev.c:1494-1501 — mines have MORE goodies, quest has fewer
if (!skip_lvl_checks) {
const uz = game.u?.uz;
if (uz && uz.dnum === game.mines_dnum) {
goldprob *= 2;
gemprob *= 3;
} else if (uz && uz.dnum === game.quest_dnum) {
goldprob = Math.trunc(goldprob / 4);
gemprob = Math.trunc(gemprob / 6);
}
}
// Seed stone with gold and gems
for (let x = 2; x < COLNO - 2; x++) {
for (let y = 1; y < ROWNO - 1; y++) {
const loc = map.at(x, y);
const locBelow = map.at(x, y + 1);
if (!loc || !locBelow) continue;
if (locBelow.typ !== STONE) {
y += 2; // next two not eligible
continue;
}
if (loc.typ !== STONE) {
y += 1;
continue;
}
// Check all 8 neighbors are stone
const n = (d) => { const l = map.at(x + d[0], y + d[1]); return l && l.typ === STONE; };
if (!(loc.wall_info & W_NONDIGGABLE)
&& n([0,-1]) && n([1,-1]) && n([-1,-1])
&& n([1,0]) && n([-1,0])
&& n([1,1]) && n([-1,1])) {
// Gold
if (rn2(1000) < goldprob) {
const otmp = mksobj(GOLD_PIECE, false, false);
otmp.ox = x;
otmp.oy = y;
otmp.quan = 1 + rnd(goldprob * 3);
otmp.owt = weight(otmp);
if (!rn2(3)) {
// add_to_buried(otmp) — buried gold
} else {
place_object(otmp, x, y);
}
}
// Gems
if (rn2(1000) < gemprob) {
const cnt = rnd(2 + Math.trunc(dunLevel / 3));
for (let i = 0; i < cnt; i++) {
const otmp = mkobj(GEM_CLASS, false);
if (otmp) {
if (otmp.otyp === ROCK) {
dealloc_obj(otmp);
} else {
otmp.ox = x;
otmp.oy = y;
if (!rn2(3)) {
// add_to_buried(otmp)
} else {
place_object(otmp, x, y);
}
}
}
}
}
}
}
}
}
// C ref: mkmaze.c:1353 get_level_extends()
export function get_level_extends() {
const map = game.level;
let xmin = 0, xmax = COLNO - 1, ymin = 0, ymax = ROWNO - 1;
let found = false, nonwall = false;
for (xmin = 0; !found && xmin <= COLNO; xmin++) {
for (let y = 0; y <= ROWNO - 1; y++) {
const typ = map.at(xmin, y)?.typ ?? STONE;
if (typ !== STONE) {
found = true;
if (!IS_WALL(typ))
nonwall = true;
}
}
}
xmin -= (nonwall || !game.level?.flags?.is_maze_lev) ? 2 : 1;
if (xmin < 0) xmin = 0;
found = false;
nonwall = false;
for (xmax = COLNO - 1; !found && xmax >= 0; xmax--) {
for (let y = 0; y <= ROWNO - 1; y++) {
const typ = map.at(xmax, y)?.typ ?? STONE;
if (typ !== STONE) {
found = true;
if (!IS_WALL(typ))
nonwall = true;
}
}
}
xmax += (nonwall || !game.level?.flags?.is_maze_lev) ? 2 : 1;
if (xmax >= COLNO) xmax = COLNO - 1;
found = false;
nonwall = false;
for (ymin = 0; !found && ymin <= ROWNO - 1; ymin++) {
for (let x = xmin; x <= xmax; x++) {
const typ = map.at(x, ymin)?.typ ?? STONE;
if (typ !== STONE) {
found = true;
if (!IS_WALL(typ))
nonwall = true;
}
}
}
ymin -= (nonwall || !game.level?.flags?.is_maze_lev) ? 2 : 1;
found = false;
nonwall = false;
for (ymax = ROWNO - 1; !found && ymax >= 0; ymax--) {
for (let x = xmin; x <= xmax; x++) {
const typ = map.at(x, ymax)?.typ ?? STONE;
if (typ !== STONE) {
found = true;
if (!IS_WALL(typ))
nonwall = true;
}
}
}
ymax += (nonwall || !game.level?.flags?.is_maze_lev) ? 2 : 1;
return { xmin, xmax, ymin, ymax };
}
// C ref: mkmaze.c:1429 bound_digging()
function bound_digging() {
if (Is_earthlevel(game.u?.uz))
return;
const map = game.level;
const { xmin, xmax, ymin, ymax } = get_level_extends();
for (let x = 0; x < COLNO; x++) {
for (let y = 0; y < ROWNO; y++) {
const loc = map.at(x, y);
if (!loc) continue;
if (IS_STWALL(loc.typ)
&& (y <= ymin || y >= ymax || x <= xmin || x >= xmax)) {
loc.wall_info |= W_NONDIGGABLE;
loc.nondiggable = true;
}
}
}
}
// C ref: mklev.c:1533 level_finalize_topology()
export function level_finalize_topology(options = {}) {
const skipMineralize = !!options.skipMineralize;
bound_digging();
if (!skipMineralize) {
mineralize(-1, -1, -1, -1, false);
}
game.in_mklev = false;
// C ref: mklev.c:1549-1552 — reset special-level offset helpers after mklev.
game.sp_xstart = 0;
game.sp_ystart = 0;
// C ref: mklev.c:1556-1558 — entering a morgue marks the level as graveyard.
if (game.level?.flags?.has_morgue) {
game.level.flags.graveyard = true;
}
// C ref: mklev.c:1559-1567 — topologize all rectangular rooms on non-maze levels.
if (!game.level?.flags?.is_maze_lev) {
const nroom = game.level?.nroom ?? 0;
for (let i = 0; i < nroom; i++) {
topologize(game.level.rooms?.[i]);
}
}
set_wall_state();
// C ref: mklev.c:1570-1573 — preserve original room type metadata.
const rooms = game.level?.rooms ?? [];
for (let i = 0; i < rooms.length; i++) {
const rm = rooms[i];
if (rm && rm.rtype != null) rm.orig_rtype = rm.rtype;
}
}
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