L3P3 · L3P3 · Jan 11, 2026 · Aug 21, 2025 · Aug 21, 2025 · Dec 29, 2025
diff --git a/build.js b/build.js
@@ -122,7 +122,9 @@ async function build_js(lang) {
 		(await readFile(TMP_FILE, 'ascii'))
 		.split('content').join('c')
 		.split('loaded').join('l')
-		.split('downl').join('downloaded'),
+		.split('"transform":"cs"').join('"transform":"contents"')
+		.split('downl').join('downloaded')
+		.split('downloadedoading').join('downloading'),
 		'ascii'
 	);
 

diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "minicraft",
-	"version": "0.11.7",
+	"version": "0.11.9",
 	"description": "voxel-based 3d game, written in javascript",
 	"homepage": "https://l3p3.de/minicraft",
 	"repository": {

diff --git a/src/app.css b/src/app.css
@@ -403,10 +403,10 @@ button {
 	width: 1rem;
 	height: 1rem;
 	border-radius: 50%;
-	opacity: 50%;
+	opacity: .5;
 	cursor: pointer;
 	transition: opacity .2s;
 }
 .window_button:hover {
-	opacity: 100%;
+	opacity: 1;
 }
diff --git a/src/app.js b/src/app.js
@@ -38,6 +38,9 @@ import {
 	app_state,
 	hook_app_state,
 } from './etc/state.js';
+import {
+	chunks_db_promise,
+} from './etc/storage.js';
 
 import {
 	game_save,
@@ -47,6 +50,7 @@ import {
 } from './game/m_renderer.js';
 import {
 	world_store_init,
+	world_store_sync_check,
 } from './game/m_world_store.js';
 
 import Window from './os/c_window.js';
@@ -59,6 +63,7 @@ export const in_event_set = value => {
 	in_event = value;
 }
 let last_touch_event = 0;
+let sync_check_timeout = 0;
 
 function Root() {
 	hook_app_state();
@@ -155,6 +160,16 @@ function Root() {
 	}, [flag_touch]);
 	hook_effect(tiles_set, [app_state.config.textures]);
 
+	hook_effect(() => {
+		clearTimeout_(sync_check_timeout);
+		if (!app_state.connection_error) {
+			sync_check_timeout = setTimeout_(world_store_sync_check);
+		}
+	}, [
+		app_state.connection_error,
+		app_state.worlds_merged,
+	]);
+
 	hook_dom('', {
 		onkeydown: handler_key,
 		onkeyup: handler_key,
@@ -170,7 +185,7 @@ function Root() {
 		node_dom('div[className=cursormask]', {
 			S: {
 				cursor: app_state.cursor,
-			}
+			},
 		}),
 	];
 }
@@ -187,7 +202,11 @@ if (window.SSR) {
 }
 else if (BroadcastChannel_) {
 	const channel_lock = new BroadcastChannel_('minicraft.lock');
-	const timeout = setTimeout_(init, 100, Root);
+	const timeout = setTimeout_(() => (
+		chunks_db_promise.then(() =>
+			init(Root)
+		)
+	), 100);
 	channel_lock.addEventListener('message', event => {
 		if (event.data === 'yes') {
 			clearTimeout_(timeout);
@@ -202,17 +221,23 @@ else if (BroadcastChannel_) {
 	channel_lock.postMessage('anyone there?');
 }
 else {
-	// first make sure lock has expired
 	const lock_found = Number_(localStorage_getItem('minicraft.lock'));
-	const lock_limit = Date_now() - 1000;
-	// if already expired
-	if (lock_found < lock_limit) init(Root);
-	// if not, wait and check again
-	else setTimeout_(() => {
-		init(
-			Number_(localStorage_getItem('minicraft.lock')) === lock_found
-			?	Root
-			:	ErrorOpened
-		);
-	}, lock_found - lock_limit);
+	const lock_limit = Date_now() - 1500;
+	// if lock still valid, wait and check again
+	if (lock_found > lock_limit) {
+		setTimeout_(() => {
+			// chunks_db_promise will already be resolved by then
+			init(
+				Number_(localStorage_getItem('minicraft.lock')) === lock_found
+				?	Root
+				:	ErrorOpened
+			);
+		}, lock_found - lock_limit);
+	}
+	// if not, init right away
+	else {
+		chunks_db_promise.then(() =>
+			init(Root)
+		)
+	}
 }
diff --git a/src/etc/constants.js b/src/etc/constants.js
@@ -19,6 +19,9 @@ export const COORDINATE_OFFSET = 1 << 16;
 
 export const WORLD_FORMAT = 1;
 
+export const WORLD_STORED_NOT = 0;
+export const WORLD_STORED_SHOULD = 1;
+
 export const BLOCK_TYPE_AIR = 0;
 export const BLOCK_TYPE_STONE = 1;
 export const BLOCK_TYPE_GRASS = 2;

diff --git a/src/etc/helpers.js b/src/etc/helpers.js
@@ -1,4 +1,6 @@
 import {
+	locale_error_connection,
+	locale_error_no_permission_logged_in,
 	locale_today,
 } from '../etc/locale.js';
 
@@ -26,15 +28,17 @@ const Date_ = Date;
 export const Date_now = () => Date_.now();
 const JSON_ = JSON;
 export const Promise_ = Promise;
+export const Promise_resolve = Promise_.resolve;
 export const JSON_stringify = JSON_.stringify;
 export const JSON_parse = JSON_.parse;
 export const localStorage_ = localStorage;
 export const localStorage_getItem = key => localStorage_.getItem(key);
 export const localStorage_setItem = localStorage_.setItem.bind(localStorage_);
 export const localStorage_removeItem = localStorage_.removeItem.bind(localStorage_);
-export const indexedDB_ = window_.indexedDB;
+export const indexedDB_ = window_.indexedDB || null;
 export const fetch_ = fetch;
 export const Error_ = msg => new Error(msg);
+export const Array_ = Array;
 export const Uint8Array_ = Uint8Array;
 export const Uint32Array_ = Uint32Array;
 export const Set_ = Set;
@@ -54,6 +58,16 @@ export const confirm_ = confirm;
 export const prompt_ = prompt;
 export const flag_chromium = navigator_.userAgent.includes('WebKit');
 
+// old safari does not support fill for typed arrays
+/*if (!Uint32Array_.prototype.fill) {
+	Uint32Array_.prototype.fill = Array_.prototype.fill;
+}*/
+
+export const headers_json_post = {
+	method: 'POST',
+	headers: {'Content-Type': 'application/json'},
+};
+
 /**
 	@param {number} num
 	@return {string}
@@ -66,11 +80,11 @@ export const number_toFixed2 = num => num.toFixed(2);
 	@param {string=} pad
 	@return {string}
 	@noinline
+	@suppress {checkTypes}
 */
 export const number_padStart2 = (num, pad) => (
-	Math_floor(num)
-	.toString()
-	.padStart(2, pad)
+	num = Math_floor(num).toString(),
+	num.length < 2 ? pad + num : num
 );
 
 /**
@@ -130,3 +144,14 @@ export const datify = (time, short) => {
 
 	return result + date_then.getHours() + ':' + number_padStart2(date_then.getMinutes(), '0');
 }
+
+export const response_parse = response => {
+	if (!response.ok) {
+		throw Error_(
+			response.status === 403
+			?	locale_error_no_permission_logged_in
+			:	locale_error_connection
+		);
+	}
+	return response.json();
+}
diff --git a/src/etc/state.js b/src/etc/state.js
@@ -7,6 +7,7 @@ import {
 	WINDOW_MODE_FULL,
 	WINDOW_TYPE_EMPTY,
 	WINDOW_TYPE_GAME,
+	WORLD_STORED_NOT,
 } from './constants.js';
 import {
 	VERSION,
@@ -117,7 +118,7 @@ const reducers = {
 						prompt_(locale_unknown_world_found, '') || locale_unknown_world
 					).substring(0, 16),
 					mod_l: Date_now(),
-					mod_r: 0,
+					mod_r: WORLD_STORED_NOT,
 				};
 				needs_save = true;
 			}
@@ -144,8 +145,8 @@ const reducers = {
 			world_list_cooldown: true,
 			world_list_loading: true,
 			world_syncing: null,
-			worlds_merged: world_store_lists_merge(config),
 			worlds_opened: [],
+			...world_store_lists_merge(config),
 		};
 		if (needs_save) {
 			state.config_saved = null;
@@ -234,35 +235,28 @@ const reducers = {
 			],
 		}
 	),
-	world_add: (state, world) => {
-		const config = {
+	world_add: (state, world) => ({
+		...state,
+		...world_store_lists_merge({
 			...state.config,
 			worlds: [
 				...state.config.worlds,
 				world,
 			],
-		};
-		return {
-			...state,
-			config,
-			worlds_merged: world_store_lists_merge(config),
-		};
-	},
-	world_remove: (state, id) => {
-		const config = {
+		}),
+	}),
+	world_remove: (state, id) => ({
+		...state,
+		...world_store_lists_merge({
 			...state.config,
 			worlds: state.config.worlds.filter(
 				world => world.id !== id
 			),
-		};
-		return {
-			...state,
-			config,
-			worlds_merged: world_store_lists_merge(config),
-		};
-	},
-	world_prop: (state, id, patch) => {
-		const config = {
+		}),
+	}),
+	world_prop: (state, id, patch) => ({
+		...state,
+		...world_store_lists_merge({
 			...state.config,
 			worlds: state.config.worlds.map(world => (
 				world.id === id
@@ -272,13 +266,8 @@ const reducers = {
 					}
 				:	world
 			)),
-		};
-		return {
-			...state,
-			config,
-			worlds_merged: world_store_lists_merge(config),
-		};
-	},
+		}),
+	}),
 };
 
 export let app_state;