up

2026-01-29 11:02:08 +07:00
commit 5e12f5e922
66 changed files with 26268 additions and 0 deletions
--- a/RCV_QuizSpin/appmanifest.json
+++ b/RCV_QuizSpin/appmanifest.json
@@ -0,0 +1,28 @@
+{
+	"name": "RCV-QuizSpin",
+	"short_name": "RCV-QuizSpin",
+	"start_url": "index.html",
+	"display": "fullscreen",
+	"orientation": "any",
+	"icons": [{
+		"src": "icon-16.png",
+		"sizes": "16x16",
+		"type": "image/png"
+	}, {
+		"src": "icon-32.png",
+		"sizes": "32x32",
+		"type": "image/png"
+	}, {
+		"src": "icon-128.png",
+		"sizes": "128x128",
+		"type": "image/png"
+	}, {
+		"src": "icon-256.png",
+		"sizes": "144x144",
+		"type": "image/png"
+	}, {
+		"src": "icon-256.png",
+		"sizes": "256x256",
+		"type": "image/png"
+	}]
+}
--- a/RCV_QuizSpin/bg.mp4
+++ b/RCV_QuizSpin/bg.mp4
--- a/RCV_QuizSpin/c2runtime.js
+++ b/RCV_QuizSpin/c2runtime.js
--- a/RCV_QuizSpin/data.js
+++ b/RCV_QuizSpin/data.js
--- a/RCV_QuizSpin/icon-114.png
+++ b/RCV_QuizSpin/icon-114.png
--- a/RCV_QuizSpin/icon-128.png
+++ b/RCV_QuizSpin/icon-128.png
--- a/RCV_QuizSpin/icon-16.png
+++ b/RCV_QuizSpin/icon-16.png
--- a/RCV_QuizSpin/icon-256.png
+++ b/RCV_QuizSpin/icon-256.png
--- a/RCV_QuizSpin/icon-32.png
+++ b/RCV_QuizSpin/icon-32.png
--- a/RCV_QuizSpin/images/answer-sheet0.png
+++ b/RCV_QuizSpin/images/answer-sheet0.png
--- a/RCV_QuizSpin/images/answer-sheet1.png
+++ b/RCV_QuizSpin/images/answer-sheet1.png
--- a/RCV_QuizSpin/images/answer-sheet10.png
+++ b/RCV_QuizSpin/images/answer-sheet10.png
--- a/RCV_QuizSpin/images/answer-sheet11.png
+++ b/RCV_QuizSpin/images/answer-sheet11.png
--- a/RCV_QuizSpin/images/answer-sheet2.png
+++ b/RCV_QuizSpin/images/answer-sheet2.png
--- a/RCV_QuizSpin/images/answer-sheet3.png
+++ b/RCV_QuizSpin/images/answer-sheet3.png
--- a/RCV_QuizSpin/images/answer-sheet4.png
+++ b/RCV_QuizSpin/images/answer-sheet4.png
--- a/RCV_QuizSpin/images/answer-sheet5.png
+++ b/RCV_QuizSpin/images/answer-sheet5.png
--- a/RCV_QuizSpin/images/answer-sheet6.png
+++ b/RCV_QuizSpin/images/answer-sheet6.png
--- a/RCV_QuizSpin/images/answer-sheet7.png
+++ b/RCV_QuizSpin/images/answer-sheet7.png
--- a/RCV_QuizSpin/images/answer-sheet8.png
+++ b/RCV_QuizSpin/images/answer-sheet8.png
--- a/RCV_QuizSpin/images/answer-sheet9.png
+++ b/RCV_QuizSpin/images/answer-sheet9.png
--- a/RCV_QuizSpin/images/batdau_btn-sheet0.png
+++ b/RCV_QuizSpin/images/batdau_btn-sheet0.png
--- a/RCV_QuizSpin/images/bg_win-sheet0.png
+++ b/RCV_QuizSpin/images/bg_win-sheet0.png
--- a/RCV_QuizSpin/images/circle-sheet0.png
+++ b/RCV_QuizSpin/images/circle-sheet0.png
--- a/RCV_QuizSpin/images/circle-sheet1.png
+++ b/RCV_QuizSpin/images/circle-sheet1.png
--- a/RCV_QuizSpin/images/huongdan-sheet0.png
+++ b/RCV_QuizSpin/images/huongdan-sheet0.png
--- a/RCV_QuizSpin/images/l2_-sheet0.png
+++ b/RCV_QuizSpin/images/l2_-sheet0.png
--- a/RCV_QuizSpin/images/l2_2-sheet0.png
+++ b/RCV_QuizSpin/images/l2_2-sheet0.png
--- a/RCV_QuizSpin/images/lose_popup-sheet0.png
+++ b/RCV_QuizSpin/images/lose_popup-sheet0.png
--- a/RCV_QuizSpin/images/qs_board-sheet0.png
+++ b/RCV_QuizSpin/images/qs_board-sheet0.png
--- a/RCV_QuizSpin/images/qs_board2-sheet0.png
+++ b/RCV_QuizSpin/images/qs_board2-sheet0.png
--- a/RCV_QuizSpin/images/replay_btn-sheet0.png
+++ b/RCV_QuizSpin/images/replay_btn-sheet0.png
--- a/RCV_QuizSpin/images/score_effect.png
+++ b/RCV_QuizSpin/images/score_effect.png
--- a/RCV_QuizSpin/images/sound-sheet0.png
+++ b/RCV_QuizSpin/images/sound-sheet0.png
--- a/RCV_QuizSpin/images/sound-sheet1.png
+++ b/RCV_QuizSpin/images/sound-sheet1.png
--- a/RCV_QuizSpin/images/spinq-sheet0.png
+++ b/RCV_QuizSpin/images/spinq-sheet0.png
--- a/RCV_QuizSpin/images/sprite-sheet0.png
+++ b/RCV_QuizSpin/images/sprite-sheet0.png
--- a/RCV_QuizSpin/images/sprite3-sheet0.png
+++ b/RCV_QuizSpin/images/sprite3-sheet0.png
--- a/RCV_QuizSpin/images/sprite4-sheet0.png
+++ b/RCV_QuizSpin/images/sprite4-sheet0.png
--- a/RCV_QuizSpin/images/sprite6-sheet0.png
+++ b/RCV_QuizSpin/images/sprite6-sheet0.png
--- a/RCV_QuizSpin/images/sprite7-sheet0.png
+++ b/RCV_QuizSpin/images/sprite7-sheet0.png
--- a/RCV_QuizSpin/images/sprite8-sheet0.png
+++ b/RCV_QuizSpin/images/sprite8-sheet0.png
--- a/RCV_QuizSpin/images/timers4.png
+++ b/RCV_QuizSpin/images/timers4.png
--- a/RCV_QuizSpin/images/txt_qs.png
+++ b/RCV_QuizSpin/images/txt_qs.png
--- a/RCV_QuizSpin/images/win_popup-sheet0.png
+++ b/RCV_QuizSpin/images/win_popup-sheet0.png
--- a/RCV_QuizSpin/images/wrong-sheet0.png
+++ b/RCV_QuizSpin/images/wrong-sheet0.png
--- a/RCV_QuizSpin/images/wrong2-sheet0.png
+++ b/RCV_QuizSpin/images/wrong2-sheet0.png
--- a/RCV_QuizSpin/index.html
+++ b/RCV_QuizSpin/index.html
@@ -0,0 +1,139 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="UTF-8" />
+	<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
+	<title>RCV-QuizSpin</title>
+	
+	<!-- Standardised web app manifest -->
+	<link rel="manifest" href="appmanifest.json" />
+	
+	<!-- Allow fullscreen mode on iOS devices. (These are Apple specific meta tags.) -->
+	<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no, minimal-ui" />
+	<meta name="apple-mobile-web-app-capable" content="yes" />
+	<meta name="apple-mobile-web-app-status-bar-style" content="black" />
+	<link rel="apple-touch-icon" sizes="256x256" href="icon-256.png" />
+	<meta name="HandheldFriendly" content="true" />
+	
+	<!-- Chrome for Android web app tags -->
+	<meta name="mobile-web-app-capable" content="yes" />
+	<link rel="shortcut icon" sizes="256x256" href="icon-256.png" />
+
+    <!-- All margins and padding must be zero for the canvas to fill the screen. -->
+	<style type="text/css">
+		* {
+			padding: 0;
+			margin: 0;
+		}
+		html, body {
+			color: #fff;
+			overflow: hidden;
+			touch-action: none;
+			-ms-touch-action: none;
+		}
+		canvas {
+			touch-action-delay: none;
+			touch-action: none;
+			-ms-touch-action: none;
+		}
+    </style>
+	
+
+</head> 
+ 
+<body> 
+	<div id="fb-root"></div>
+	<div style="width: 100%; height: 100%; position: absolute; top: 0; left: 0; z-index: -1;">
+		<!--<img src = "./bg.jpg" style="width:100%; height: 100%; object-fit: cover;"/> -->
+		<video autoplay="" loop="" muted="" style="width : 100%; height: 100%;object-fit: cover;" src="bg.mp4">
+		</video>
+	</div>
+	<script>
+	// Issue a warning if trying to preview an exported project on disk.
+	(function(){
+		// Check for running exported on file protocol
+		if (window.location.protocol.substr(0, 4) === "file")
+		{
+			alert("Exported games won't work until you upload them. (When running on the file:/// protocol, browsers block many features from working for security reasons.)");
+		}
+	})();
+	</script>
+	
+	<!-- The canvas must be inside a div called c2canvasdiv -->
+	<div id="c2canvasdiv">
+	
+		<!-- The canvas the project will render to.  If you change its ID, don't forget to change the
+		ID the runtime looks for in the jQuery events above (ready() and cr_sizeCanvas()). -->
+		<canvas id="c2canvas" width="1920" height="1080">
+			<!-- This text is displayed if the visitor's browser does not support HTML5.
+			You can change it, but it is a good idea to link to a description of a browser
+			and provide some links to download some popular HTML5-compatible browsers. -->
+			<h1>Your browser does not appear to support HTML5.  Try upgrading your browser to the latest version.  <a href="http://www.whatbrowser.org">What is a browser?</a>
+			<br/><br/><a href="http://www.microsoft.com/windows/internet-explorer/default.aspx">Microsoft Internet Explorer</a><br/>
+			<a href="http://www.mozilla.com/firefox/">Mozilla Firefox</a><br/>
+			<a href="http://www.google.com/chrome/">Google Chrome</a><br/>
+			<a href="http://www.apple.com/safari/download/">Apple Safari</a></h1>
+		</canvas>
+		
+	</div>
+	
+	<!-- Pages load faster with scripts at the bottom -->
+	
+	<!-- Construct 2 exported games require jQuery. -->
+	<script src="jquery-3.4.1.min.js"></script>
+	<script src="tdv_sdk.js"></script>
+
+	
+    <!-- The runtime script.  You can rename it, but don't forget to rename the reference here as well.
+    This file will have been minified and obfuscated if you enabled "Minify script" during export. -->
+	<script src="c2runtime.js"></script>
+
+    <script>
+		// Start the Construct 2 project running on window load.
+		jQuery(document).ready(function ()
+		{			
+			// Create new runtime using the c2canvas
+			cr_createRuntime("c2canvas");
+		});
+		
+		// Pause and resume on page becoming visible/invisible
+		function onVisibilityChanged() {
+			if (document.hidden || document.mozHidden || document.webkitHidden || document.msHidden)
+				cr_setSuspended(true);
+			else
+				cr_setSuspended(false);
+		};
+		
+		document.addEventListener("visibilitychange", onVisibilityChanged, false);
+		document.addEventListener("mozvisibilitychange", onVisibilityChanged, false);
+		document.addEventListener("webkitvisibilitychange", onVisibilityChanged, false);
+		document.addEventListener("msvisibilitychange", onVisibilityChanged, false);
+		
+		function OnRegisterSWError(e)
+		{
+			console.warn("Failed to register service worker: ", e);
+		};
+		
+		// Runtime calls this global method when ready to start caching (i.e. after startup).
+		// This registers the service worker which caches resources for offline support.
+		window.C2_RegisterSW = function C2_RegisterSW()
+		{
+			if (!navigator.serviceWorker)
+				return;		// no SW support, ignore call
+			
+			try {
+				navigator.serviceWorker.register("sw.js", { scope: "./" })
+				.then(function (reg)
+				{
+					console.log("Registered service worker on " + reg.scope);
+				})
+				.catch(OnRegisterSWError);
+			}
+			catch (e)
+			{
+				OnRegisterSWError(e);
+			}
+		};
+    </script>
+</body> 
+</html> 
--- a/RCV_QuizSpin/jquery-3.4.1.min.js
+++ b/RCV_QuizSpin/jquery-3.4.1.min.js
--- a/RCV_QuizSpin/loading-logo.png
+++ b/RCV_QuizSpin/loading-logo.png
--- a/RCV_QuizSpin/media/click.ogg
+++ b/RCV_QuizSpin/media/click.ogg
--- a/RCV_QuizSpin/media/clock-alarm-8761.ogg
+++ b/RCV_QuizSpin/media/clock-alarm-8761.ogg
--- a/RCV_QuizSpin/media/correct.ogg
+++ b/RCV_QuizSpin/media/correct.ogg
--- a/RCV_QuizSpin/media/dungsound.ogg
+++ b/RCV_QuizSpin/media/dungsound.ogg
--- a/RCV_QuizSpin/media/fail.ogg
+++ b/RCV_QuizSpin/media/fail.ogg
--- a/RCV_QuizSpin/media/finish.ogg
+++ b/RCV_QuizSpin/media/finish.ogg
--- a/RCV_QuizSpin/media/hit.ogg
+++ b/RCV_QuizSpin/media/hit.ogg
--- a/RCV_QuizSpin/media/lose.ogg
+++ b/RCV_QuizSpin/media/lose.ogg
--- a/RCV_QuizSpin/media/merry-christmas-christmas-dream-268557.ogg
+++ b/RCV_QuizSpin/media/merry-christmas-christmas-dream-268557.ogg
--- a/RCV_QuizSpin/offline.js
+++ b/RCV_QuizSpin/offline.js
@@ -0,0 +1,64 @@
+{
+	"version": 1769658677,
+	"fileList": [
+		"data.js",
+		"c2runtime.js",
+		"jquery-3.4.1.min.js",
+		"offlineClient.js",
+		"images/sprite-sheet0.png",
+		"images/l2_-sheet0.png",
+		"images/l2_2-sheet0.png",
+		"images/win_popup-sheet0.png",
+		"images/lose_popup-sheet0.png",
+		"images/replay_btn-sheet0.png",
+		"images/score_effect.png",
+		"images/txt_qs.png",
+		"images/answer-sheet0.png",
+		"images/answer-sheet1.png",
+		"images/answer-sheet2.png",
+		"images/answer-sheet3.png",
+		"images/answer-sheet4.png",
+		"images/answer-sheet5.png",
+		"images/answer-sheet6.png",
+		"images/answer-sheet7.png",
+		"images/answer-sheet8.png",
+		"images/answer-sheet9.png",
+		"images/answer-sheet10.png",
+		"images/answer-sheet11.png",
+		"images/wrong-sheet0.png",
+		"images/wrong2-sheet0.png",
+		"images/qs_board-sheet0.png",
+		"images/circle-sheet0.png",
+		"images/circle-sheet1.png",
+		"images/spinq-sheet0.png",
+		"images/qs_board2-sheet0.png",
+		"images/sound-sheet0.png",
+		"images/sound-sheet1.png",
+		"images/batdau_btn-sheet0.png",
+		"images/huongdan-sheet0.png",
+		"images/bg_win-sheet0.png",
+		"images/timers4.png",
+		"images/sprite3-sheet0.png",
+		"images/sprite4-sheet0.png",
+		"images/sprite6-sheet0.png",
+		"images/sprite7-sheet0.png",
+		"images/sprite8-sheet0.png",
+		"media/finish.ogg",
+		"media/hit.ogg",
+		"media/lose.ogg",
+		"media/dungsound.ogg",
+		"media/correct.ogg",
+		"media/fail.ogg",
+		"media/click.ogg",
+		"media/merry-christmas-christmas-dream-268557.ogg",
+		"media/clock-alarm-8761.ogg",
+		"icon-16.png",
+		"icon-32.png",
+		"icon-114.png",
+		"icon-128.png",
+		"icon-256.png",
+		"loading-logo.png",
+		"tdv_sdk.js",
+		"bg.mp4"
+	]
+}
--- a/RCV_QuizSpin/offlineClient.js
+++ b/RCV_QuizSpin/offlineClient.js
@@ -0,0 +1,53 @@
+"use strict";
+
+(function() {
+	
+	class OfflineClient
+	{
+		constructor()
+		{
+			// Create a BroadcastChannel, if supported.
+			this._broadcastChannel = (typeof BroadcastChannel === "undefined" ? null : new BroadcastChannel("offline"));
+			
+			// Queue of messages received before a message callback is set.
+			this._queuedMessages = [];
+			
+			// The message callback.
+			this._onMessageCallback = null;
+			
+			// If BroadcastChannel is supported, listen for messages.
+			if (this._broadcastChannel)
+				this._broadcastChannel.onmessage = (e => this._OnBroadcastChannelMessage(e));
+		}
+		
+		_OnBroadcastChannelMessage(e)
+		{
+			// Have a message callback set: just forward the call.
+			if (this._onMessageCallback)
+			{
+				this._onMessageCallback(e);
+				return;
+			}
+			
+			// Otherwise the app hasn't loaded far enough to set a message callback.
+			// Buffer the incoming messages to replay when the app sets a callback.
+			this._queuedMessages.push(e);
+		}
+		
+		SetMessageCallback(f)
+		{
+			this._onMessageCallback = f;
+			
+			// Replay any queued messages through the handler, then clear the queue.
+			for (let e of this._queuedMessages)
+				this._onMessageCallback(e);
+			
+			this._queuedMessages.length = 0;
+		}
+	};
+	
+	// Create the offline client ASAP so we receive and start queueing any messages the SW broadcasts.
+	window.OfflineClientInfo = new OfflineClient();
+	
+}());
+
--- a/RCV_QuizSpin/sw.js
+++ b/RCV_QuizSpin/sw.js
@@ -0,0 +1,403 @@
+"use strict";
+
+const OFFLINE_DATA_FILE = "offline.js";
+const CACHE_NAME_PREFIX = "c2offline";
+const BROADCASTCHANNEL_NAME = "offline";
+const CONSOLE_PREFIX = "[SW] ";
+const LAZYLOAD_KEYNAME = "";
+
+// Create a BroadcastChannel if supported.
+const broadcastChannel = (typeof BroadcastChannel === "undefined" ? null : new BroadcastChannel(BROADCASTCHANNEL_NAME));
+
+//////////////////////////////////////
+// Utility methods
+function PostBroadcastMessage(o)
+{
+	if (!broadcastChannel)
+		return;		// not supported
+	
+	// Impose artificial (and arbitrary!) delay of 3 seconds to make sure client is listening by the time the message is sent.
+	// Note we could remove the delay on some messages, but then we create a race condition where sometimes messages can arrive
+	// in the wrong order (e.g. "update ready" arrives before "started downloading update"). So to keep the consistent ordering,
+	// delay all messages by the same amount.
+	setTimeout(() => broadcastChannel.postMessage(o), 3000);
+};
+
+function Broadcast(type)
+{
+	PostBroadcastMessage({
+		"type": type
+	});
+};
+
+function BroadcastDownloadingUpdate(version)
+{
+	PostBroadcastMessage({
+		"type": "downloading-update",
+		"version": version
+	});
+}
+
+function BroadcastUpdateReady(version)
+{
+	PostBroadcastMessage({
+		"type": "update-ready",
+		"version": version
+	});
+}
+
+function IsUrlInLazyLoadList(url, lazyLoadList)
+{
+	if (!lazyLoadList)
+		return false;		// presumably lazy load list failed to load
+	
+	try {
+		for (const lazyLoadRegex of lazyLoadList)
+		{
+			if (new RegExp(lazyLoadRegex).test(url))
+				return true;
+		}
+	}
+	catch (err)
+	{
+		console.error(CONSOLE_PREFIX + "Error matching in lazy-load list: ", err);
+	}
+	
+	return false;
+};
+
+function WriteLazyLoadListToStorage(lazyLoadList)
+{
+	if (typeof localforage === "undefined")
+		return Promise.resolve();		// bypass if localforage not imported
+	else
+		return localforage.setItem(LAZYLOAD_KEYNAME, lazyLoadList)
+};
+
+function ReadLazyLoadListFromStorage()
+{
+	if (typeof localforage === "undefined")
+		return Promise.resolve([]);		// bypass if localforage not imported
+	else
+		return localforage.getItem(LAZYLOAD_KEYNAME);
+};
+
+function GetCacheBaseName()
+{
+	// Include the scope to avoid name collisions with any other SWs on the same origin.
+	// e.g. "c2offline-https://example.com/foo/" (won't collide with anything under bar/)
+	return CACHE_NAME_PREFIX + "-" + self.registration.scope;
+};
+
+function GetCacheVersionName(version)
+{
+	// Append the version number to the cache name.
+	// e.g. "c2offline-https://example.com/foo/-v2"
+	return GetCacheBaseName() + "-v" + version;
+};
+
+// Return caches.keys() filtered down to just caches we're interested in (with the right base name).
+// This filters out caches from unrelated scopes.
+async function GetAvailableCacheNames()
+{
+	const cacheNames = await caches.keys();
+	const cacheBaseName = GetCacheBaseName();
+	return cacheNames.filter(n => n.startsWith(cacheBaseName));
+};
+
+// Identify if an update is pending, which is the case when we have 2 or more available caches.
+// One must be an update that is waiting, since the next navigate that does an upgrade will
+// delete all the old caches leaving just one currently-in-use cache.
+async function IsUpdatePending()
+{
+	const availableCacheNames = await GetAvailableCacheNames();
+	return (availableCacheNames.length >= 2);
+};
+
+// Automatically deduce the main page URL (e.g. index.html or main.aspx) from the available browser windows.
+// This prevents having to hard-code an index page in the file list, implicitly caching it like AppCache did.
+async function GetMainPageUrl()
+{
+	const allClients = await clients.matchAll({
+		includeUncontrolled: true,
+		type: "window"
+	});
+	
+	for (const c of allClients)
+	{
+		// Parse off the scope from the full client URL, e.g. https://example.com/index.html -> index.html
+		let url = c.url;
+		if (url.startsWith(self.registration.scope))
+			url = url.substring(self.registration.scope.length);
+		
+		if (url && url !== "/")		// ./ is also implicitly cached so don't bother returning that
+		{
+			// If the URL is solely a search string, prefix it with / to ensure it caches correctly.
+			// e.g. https://example.com/?foo=bar needs to cache as /?foo=bar, not just ?foo=bar.
+			if (url.startsWith("?"))
+				url = "/" + url;
+			
+			return url;
+		}
+	}
+	
+	return "";		// no main page URL could be identified
+};
+
+// Hack to fetch optionally bypassing HTTP cache until fetch cache options are supported in Chrome (crbug.com/453190)
+function fetchWithBypass(request, bypassCache)
+{
+	if (typeof request === "string")
+		request = new Request(request);
+	
+	if (bypassCache)
+	{
+		// bypass enabled: add a random search parameter to avoid getting a stale HTTP cache result
+		const url = new URL(request.url);
+		url.search += Math.floor(Math.random() * 1000000);
+
+		return fetch(url, {
+			headers: request.headers,
+			mode: request.mode,
+			credentials: request.credentials,
+			redirect: request.redirect,
+			cache: "no-store"
+		});
+	}
+	else
+	{
+		// bypass disabled: perform normal fetch which is allowed to return from HTTP cache
+		return fetch(request);
+	}
+};
+
+// Effectively a cache.addAll() that only creates the cache on all requests being successful (as a weak attempt at making it atomic)
+// and can optionally cache-bypass with fetchWithBypass in every request
+async function CreateCacheFromFileList(cacheName, fileList, bypassCache)
+{
+	// Kick off all requests and wait for them all to complete
+	const responses = await Promise.all(fileList.map(url => fetchWithBypass(url, bypassCache)));
+	
+	// Check if any request failed. If so don't move on to opening the cache.
+	// This makes sure we only open a cache if all requests succeeded.
+	let allOk = true;
+	
+	for (const response of responses)
+	{
+		if (!response.ok)
+		{
+			allOk = false;
+			console.error(CONSOLE_PREFIX + "Error fetching '" + response.url + "' (" + response.status + " " + response.statusText + ")");
+		}
+	}
+	
+	if (!allOk)
+		throw new Error("not all resources were fetched successfully");
+	
+	// Can now assume all responses are OK. Open a cache and write all responses there.
+	// TODO: ideally we can do this transactionally to ensure a complete cache is written as one atomic operation.
+	// This needs either new transactional features in the spec, or at the very least a way to rename a cache
+	// (so we can write to a temporary name that won't be returned by GetAvailableCacheNames() and then rename it when ready).
+	const cache = await caches.open(cacheName);
+	
+	try {
+		return await Promise.all(responses.map(
+			(response, i) => cache.put(fileList[i], response)
+		));
+	}
+	catch (err)
+	{
+		// Not sure why cache.put() would fail (maybe if storage quota exceeded?) but in case it does,
+		// clean up the cache to try to avoid leaving behind an incomplete cache.
+		console.error(CONSOLE_PREFIX + "Error writing cache entries: ", err);
+		caches.delete(cacheName);
+		throw err;
+	}
+};
+
+async function UpdateCheck(isFirst)
+{
+	try {
+		// Always bypass cache when requesting offline.js to make sure we find out about new versions.
+		const response = await fetchWithBypass(OFFLINE_DATA_FILE, true);
+		
+		if (!response.ok)
+			throw new Error(OFFLINE_DATA_FILE + " responded with " + response.status + " " + response.statusText);
+			
+		const data = await response.json();
+		
+		const version = data.version;
+		const fileList = data.fileList;
+		const lazyLoadList = data.lazyLoad;
+		const currentCacheName = GetCacheVersionName(version);
+		
+		const cacheExists = await caches.has(currentCacheName);
+
+		// Don't recache if there is already a cache that exists for this version. Assume it is complete.
+		if (cacheExists)
+		{
+			// Log whether we are up-to-date or pending an update.
+			const isUpdatePending = await IsUpdatePending();
+			if (isUpdatePending)
+			{
+				console.log(CONSOLE_PREFIX + "Update pending");
+				Broadcast("update-pending");
+			}
+			else
+			{
+				console.log(CONSOLE_PREFIX + "Up to date");
+				Broadcast("up-to-date");
+			}
+			return;
+		}
+		
+		// Implicitly add the main page URL to the file list, e.g. "index.html", so we don't have to assume a specific name.
+		const mainPageUrl = await GetMainPageUrl();
+		
+		// Prepend the main page URL to the file list if we found one and it is not already in the list.
+		// Also make sure we request the base / which should serve the main page.
+		fileList.unshift("./");
+		
+		if (mainPageUrl && fileList.indexOf(mainPageUrl) === -1)
+			fileList.unshift(mainPageUrl);
+		
+		console.log(CONSOLE_PREFIX + "Caching " + fileList.length + " files for offline use");
+		
+		if (isFirst)
+			Broadcast("downloading");
+		else
+			BroadcastDownloadingUpdate(version);
+		
+		// Note we don't bypass the cache on the first update check. This is because SW installation and the following
+		// update check caching will race with the normal page load requests. For any normal loading fetches that have already
+		// completed or are in-flight, it is pointless and wasteful to cache-bust the request for offline caching, since that
+		// forces a second network request to be issued when a response from the browser HTTP cache would be fine.
+		if (lazyLoadList)
+			await WriteLazyLoadListToStorage(lazyLoadList);							// dump lazy load list to local storage#
+		
+		await CreateCacheFromFileList(currentCacheName, fileList, !isFirst);
+		const isUpdatePending = await IsUpdatePending();
+		
+		if (isUpdatePending)
+		{
+			console.log(CONSOLE_PREFIX + "All resources saved, update ready");
+			BroadcastUpdateReady(version);
+		}
+		else
+		{
+			console.log(CONSOLE_PREFIX + "All resources saved, offline support ready");
+			Broadcast("offline-ready");
+		}
+	}
+	catch (err)
+	{
+		// Update check fetches fail when we're offline, but in case there's any other kind of problem with it, log a warning.
+		console.warn(CONSOLE_PREFIX + "Update check failed: ", err);
+	}
+};
+
+self.addEventListener("install", event =>
+{
+	// On install kick off an update check to cache files on first use.
+	// If it fails we can still complete the install event and leave the SW running, we'll just
+	// retry on the next navigate.
+	event.waitUntil(
+		UpdateCheck(true)		// first update
+		.catch(() => null)
+	);
+});
+
+async function GetCacheNameToUse(availableCacheNames, doUpdateCheck)
+{
+	// Prefer the oldest cache available. This avoids mixed-version responses by ensuring that if a new cache
+	// is created and filled due to an update check while the page is running, we keep returning resources
+	// from the original (oldest) cache only.
+	if (availableCacheNames.length === 1 || !doUpdateCheck)
+		return availableCacheNames[0];
+	
+	// We are making a navigate request with more than one cache available. Check if we can expire any old ones.
+	const allClients = await clients.matchAll();
+	
+	// If there are other clients open, don't expire anything yet. We don't want to delete any caches they
+	// might be using, which could cause mixed-version responses.
+	if (allClients.length > 1)
+		return availableCacheNames[0];
+	
+	// Identify newest cache to use. Delete all the others.
+	const latestCacheName = availableCacheNames[availableCacheNames.length - 1];
+	console.log(CONSOLE_PREFIX + "Updating to new version");
+	
+	await Promise.all(
+		availableCacheNames.slice(0, -1)
+		.map(c => caches.delete(c))
+	);
+	
+	return latestCacheName;
+};
+
+async function HandleFetch(event, doUpdateCheck)
+{
+	const availableCacheNames = await GetAvailableCacheNames();
+	
+	// No caches available: go to network
+	if (!availableCacheNames.length)
+		return fetch(event.request);
+	
+	const useCacheName = await GetCacheNameToUse(availableCacheNames, doUpdateCheck);
+	const cache = await caches.open(useCacheName);
+	const cachedResponse = await cache.match(event.request);
+	
+	if (cachedResponse)
+		return cachedResponse;		// use cached response
+	
+	// We need to check if this request is to be lazy-cached. Send the request and load the lazy-load list
+	// from storage simultaneously.
+	const result = await Promise.all([fetch(event.request), ReadLazyLoadListFromStorage()]);
+	const fetchResponse = result[0];
+	const lazyLoadList = result[1];
+	
+	if (IsUrlInLazyLoadList(event.request.url, lazyLoadList))
+	{
+		// Handle failure writing to the cache. This can happen if the storage quota is exceeded, which is particularly
+		// likely in Safari 11.1, which appears to have very tight storage limits. Make sure even in the event of an error
+		// we continue to return the response from the fetch.
+		try {
+			// Note clone response since we also respond with it
+			await cache.put(event.request, fetchResponse.clone());
+		}
+		catch (err)
+		{
+			console.warn(CONSOLE_PREFIX + "Error caching '" + event.request.url + "': ", err);
+		}
+	}
+		
+	return fetchResponse;
+};
+
+self.addEventListener("fetch", event =>
+{
+	/** NOTE (iain)
+	 *  This check is to prevent a bug with XMLHttpRequest where if its
+	 *  proxied with "FetchEvent.prototype.respondWith" no upload progress
+	 *  events are triggered. By returning we allow the default action to
+	 *  occur instead. Currently all cross-origin requests fall back to default.
+	 */
+	if (new URL(event.request.url).origin !== location.origin)
+		return;
+		
+	// Check for an update on navigate requests
+	const doUpdateCheck = (event.request.mode === "navigate");
+	
+	const responsePromise = HandleFetch(event, doUpdateCheck);
+
+	if (doUpdateCheck)
+	{
+		// allow the main request to complete, then check for updates
+		event.waitUntil(
+			responsePromise
+			.then(() => UpdateCheck(false))		 // not first check
+		);
+	}
+
+	event.respondWith(responsePromise);
+});
--- a/RCV_QuizSpin/tdv_sdk.js
+++ b/RCV_QuizSpin/tdv_sdk.js
@@ -0,0 +1,807 @@
+var tdv_sdk = {};
+tdv_sdk.list = [
+    // ==================== PART 1: MULTIPLE CHOICE (Q1-Q10) - DỄ → TRUNG BÌNH ====================
+    {
+        "id": 1,
+        "question": "“Hi! My name is Rosy. I am in class 4B.” Who is speaking?",
+        "options": ["Tim", "Billy", "Rosy", "Miss Jones"],
+        "answer": "Rosy",
+        "audio": ""
+    },
+    {
+        "id": 2,
+        "question": "Which is a day of the week AFTER Thursday?",
+        "options": ["Wednesday", "Friday", "Monday", "Tuesday"],
+        "answer": "Friday",
+        "audio": ""
+    },
+    {
+        "id": 3,
+        "question": "Who works at the airport?",
+        "options": ["Pilot", "Firefighter", "Doctor", "Police officer"],
+        "answer": "Pilot",
+        "audio": ""
+    },
+    {
+        "id": 4,
+        "question": "Which place is NOT a workplace?",
+        "options": ["Hospital", "Fire station", "Bedroom", "Police station"],
+        "answer": "Bedroom",
+        "audio": ""
+    },
+    {
+        "id": 5,
+        "question": "Choose the correct sentence.",
+        "options": [
+            "She work at the hospital.",
+            "She works at the hospital",
+            "She working at the hospital",
+            "She worked at hospital"
+        ],
+        "answer": "She works at the hospital",
+        "audio": ""
+    },
+    {
+        "id": 6,
+        "question": "What do the children like at the beach?",
+        "options": [
+            "Surf and play with a ball",
+            "Study English",
+            "Write in notebooks",
+            "Paint pictures"
+        ],
+        "answer": "Surf and play with a ball",
+        "audio": ""
+    },
+    {
+        "id": 7,
+        "question": "Which number is BETWEEN 29 and 40?",
+        "options": ["30", "20", "50", "29"],
+        "answer": "30",
+        "audio": ""
+    },
+    {
+        "id": 8,
+        "question": "Which sentence is correct?",
+        "options": [
+            "I have English on Wednesday.",
+            "I has English on Wednesday.",
+            "I have English in Wednesday.",
+            "I am have English on Wednesday."
+        ],
+        "answer": "I have English on Wednesday.",
+        "audio": ""
+    },
+    {
+        "id": 9,
+        "question": "Which activity is done in a group?",
+        "options": [
+            "Write in a notebook",
+            "Play with a ball",
+            "Eat a sandwich",
+            "Take a photo"
+        ],
+        "answer": "Play with a ball",
+        "audio": ""
+    },
+    {
+        "id": 10,
+        "question": "“The firefighter helps people every day.” What does the firefighter do?",
+        "options": [
+            "Eats sandwiches",
+            "Helps people",
+            "Goes to school",
+            "Collects shells"
+        ],
+        "answer": "Helps people",
+        "audio": ""
+    },
+    {
+        "id": 11,
+        "question": "Which is NOT a fast food?",
+        "options": ["Fries", "Pizza", "Soup", "Chicken"],
+        "answer": "Soup",
+        "audio": ""
+    },
+    {
+        "id": 12,
+        "question": "The funny monkey wears a hat and eats a sandwich. Then it takes a photo. Which is TRUE?",
+        "options": [
+            "The monkey eats a sandwich first",
+            "The monkey takes a photo before eating",
+            "The monkey wears a hat first",
+            "The monkey writes in a notebook"
+        ],
+        "answer": "The monkey wears a hat first",
+        "audio": ""
+    },
+    {
+        "id": 13,
+        "question": "What does Billy like?",
+        "options": ["His school", "His bag", "His teacher", "His toys"],
+        "answer": "His school",
+        "audio": "https://audio.senaai.tech/audio/Sena_Voice1_hello_im_billy_i_am_in_class_4a_today_is_monday_i__b775daf7.mp3"
+    },
+    {
+        "id": 14,
+        "question": "What is her job?",
+        "options": ["Nurse", "Doctor", "Teacher", "Pilot"],
+        "answer": "Nurse",
+        "audio": "https://audio.senaai.tech/audio/Sena_Voice1_my_mom_works_at_a_hospital_she_is_not_a_doctor_she_130967d2.mp3"
+    },
+    {
+        "id": 15,
+        "question": "What does the monkey do last?",
+        "options": [
+            "Eats a sandwich",
+            "Takes a photo",
+            "Wears a hat",
+            "Writes in a notebook"
+        ],
+        "answer": "Takes a photo",
+        "audio": "https://audio.senaai.tech/audio/Sena_Voice1_the_monkey_wears_a_hat_and_a_scarf_it_eats_a_sandw_ba8a2f89.mp3"
+    },
+    {
+        "id": 16,
+        "question": "Which food does the speaker prefer?",
+        "options": ["Pizza", "Bubble tea", "Chicken", "Fries"],
+        "answer": "Bubble tea",
+        "audio": "https://audio.senaai.tech/audio/Sena_Voice1_i_have_a_bubble_tea_my_brother_has_pizza_i_like_bu_a94a29b8.mp3"
+    },
+    {
+        "id": 17,
+        "question": "Why does the speaker like P.E?",
+        "options": [
+            "Because it is difficult",
+            "Because he can read books",
+            "Because he can run and play",
+            "Because it is in the art room"
+        ],
+        "answer": "Because he can run and play",
+        "audio": "https://audio.senaai.tech/audio/Sena_Voice1_look_at_the_school_subjects_i_have_english_math_ar_2f34d40d.mp3"
+    },
+    {
+        "id": 18,
+        "question": "Which sentence is TRUE?",
+        "options": [
+            "He is a police officer",
+            "He works at a fire station",
+            "He works at a hospital",
+            "He collects shells"
+        ],
+        "answer": "He works at a fire station",
+        "audio": "https://audio.senaai.tech/audio/Sena_Voice1_my_dad_is_a_firefighter_he_works_at_the_fire_stati_abd4086a.mp3"
+    },
+    {
+        "id": 19,
+        "question": "In which lunar month does Tet (Vietnamese New Year) usually begin?",
+        "answer": "January",
+        "audio": ""
+    },
+    {
+        "id": 20,
+        "question": "Banh Chung is made from sticky rice, green beans, and ____?",
+        "answer": "pork",
+        "audio": ""
+    },
+    {
+        "id": 21,
+        "question": "What flower is most popular during Tet in the North of Vietnam?",
+        "answer": "peach blossom",
+        "audio": ""
+    },
+    {
+        "id": 22,
+        "question": "Who do Vietnamese usually give lucky money to during Tet?",
+        "answer": "children",
+        "audio": ""
+    },
+    {
+        "id": 23,
+        "question": "Which square-shaped cake represents the Earth during Tet?",
+        "answer": "Banh Chung",
+        "audio": ""
+    },
+    {
+        "id": 24,
+        "question": "Where do people usually go during Tet to pray for health and good luck?",
+        "answer": "pagoda",
+        "audio": ""
+    }
+];
+
+tdv_sdk.currentIndex = 0;
+tdv_sdk.shuffleArray = function (Array) {
+    for (let i = Array.length - 1; i > 0; i--) {
+        const j = Math.floor(Math.random() * (i + 1));
+        [Array[i], Array[j]] = [Array[j], Array[i]];
+    }
+};
+
+tdv_sdk.start = function () {
+    tdv_sdk.currentIndex = 0;
+    tdv_sdk.listquestion = [];
+    tdv_sdk.totalquestion = tdv_sdk.list.length;
+    for (let i = 0; i < tdv_sdk.totalquestion; i++) {
+        tdv_sdk.listquestion.push(tdv_sdk.list[i]);
+    }
+};
+
+tdv_sdk.loadquestion = function () {
+    if (tdv_sdk.currentIndex >= tdv_sdk.totalquestion) {
+        console.log("🎉 Game Over! No more questions.");
+        tdv_sdk.curQuestion = null;
+        tdv_sdk.questionState = -1;
+        return 0;
+    }
+
+    tdv_sdk.curQuestion = tdv_sdk.listquestion[tdv_sdk.currentIndex];
+    tdv_sdk.correctAnswer = tdv_sdk.curQuestion.answer;
+
+    // ✅ CHỈ shuffle nếu có options (Multiple choice)
+    if (Array.isArray(tdv_sdk.curQuestion.options)) {
+        tdv_sdk.shuffleArray(tdv_sdk.curQuestion.options);
+    }
+
+    tdv_sdk.questionState = 0;
+    return 1;
+};
+
+
+// ==================== QUESTION STATE MACHINE ====================
+// State: 0 = Roll dice, 1 = Chờ start timer, 2 = Đang đếm, 3 = Chờ hiện đáp án, 4 = Chờ đóng layer
+tdv_sdk.questionState = 0;
+
+// Lấy state hiện tại (dùng để check trong Construct)
+tdv_sdk.getQuestionState = function () {
+    return tdv_sdk.questionState;
+};
+
+// Set state (dùng khi cần set thủ công)
+tdv_sdk.setQuestionState = function (state) {
+    tdv_sdk.questionState = state;
+    console.log("📍 Question State set to:", state);
+    return state;
+};
+
+// Xử lý khi bấm Space - trả về state mới
+// questionState: 0 = Roll dice, 1 = Start timer, 2 = Đang đếm, 3 = Show answer, 4 = Close layer
+
+tdv_sdk.handleSpacePress = function () {
+    switch (tdv_sdk.questionState) {
+        case 0:
+            // Space: Roll dice
+            console.log("🎲 Space 0: Roll dice!");
+            return 0;
+
+        case 1:
+            // Space: Bắt đầu đếm giờ (chờ hết giờ mới được bấm tiếp)
+            tdv_sdk.questionState = 2;
+            gameTimer.resetQuestionTimer();
+            console.log("▶️ Space 1: Timer started!");
+            return 1;
+
+        case 2:
+            // Đang đếm giờ - Bấm Space sẽ dừng timer và hiện đáp án ngay
+            gameTimer.stopTimer();
+            tdv_sdk.questionState = 3;
+            console.log("⏹️ Space 2: Timer stopped! Show answer.");
+            return 2;
+
+        case 3:
+            // Space: Hiện đáp án đúng
+            tdv_sdk.questionState = 4;
+            console.log("✅ Space 3: Show correct answer!");
+            return 3;
+
+        case 4:
+            // Space: Đóng layer câu hỏi
+            // LƯU Ý: KHÔNG gọi nextQuestion() ở đây vì Construct đã gọi riêng
+            tdv_sdk.questionState = 0;
+            console.log("🚪 Space 4: Close question layer!");
+            return 4;
+
+        default:
+            return tdv_sdk.questionState;
+    }
+};
+
+// Gọi khi bắt đầu hiện câu hỏi (sau khi thỏ di chuyển xong)
+// QUAN TRỌNG: Reset timer về 15s và KHÔNG start - chờ Space mới start
+tdv_sdk.startQuestion = function () {
+    // Dừng timer cũ nếu đang chạy
+    gameTimer.stopTimer();
+    // Reset timer về giá trị ban đầu (15s) nhưng KHÔNG start
+    gameTimer.currentTime = gameTimer.questionTime;
+    // Set state = 1 (chờ Space để start timer)
+    tdv_sdk.questionState = 1;
+    console.log("❓ Question ready! Timer set to", gameTimer.questionTime, "s. Press Space to start.");
+    return 1;
+};
+
+// Gọi khi hết giờ (timer = 0)
+tdv_sdk.onTimeUp = function () {
+    if (tdv_sdk.questionState === 2) {
+        gameTimer.currentTime = 0; // Đảm bảo hiển thị 0
+        gameTimer.stopTimer();
+        tdv_sdk.questionState = 3;
+        console.log("⏰ Time up! Press Space to see answer.");
+    }
+    return 3;
+};
+
+// Gọi khi người chơi trả lời xong (chỉ gọi 1 lần khi đang đếm giờ)
+tdv_sdk.onAnswered = function () {
+    // Chỉ xử lý nếu đang ở state 2 (đang đếm giờ)
+    if (tdv_sdk.questionState !== 2) {
+        console.log("⚠️ onAnswered skipped - already processed");
+        return tdv_sdk.questionState;
+    }
+    gameTimer.stopTimer();
+    tdv_sdk.questionState = 3;
+    console.log("📝 Answered! Press Space to see answer.");
+    return 3;
+};
+
+// Check xem câu hỏi hiện tại có phải dạng NGHE không (audio là mảng)
+// Trả về 1 nếu là Listening Question (Q21-Q30), 0 nếu là câu hỏi thường
+tdv_sdk.isListeningQuestion = function () {
+    if (!tdv_sdk.curQuestion) return 0;
+    return Array.isArray(tdv_sdk.curQuestion.audio) ? 1 : 0;
+};
+
+tdv_sdk.getCurQuestion = function () {
+    return tdv_sdk.curQuestion.question;
+};
+
+tdv_sdk.getCurOptions = function (index) {
+    if (!tdv_sdk.curQuestion.options) return "";
+    return tdv_sdk.curQuestion.options[index];
+};
+
+
+// Tính scale phù hợp dựa trên độ dài text đáp án
+// Trả về giá trị scale từ 0.5 đến 1.0
+// maxLength: Độ dài tối đa trước khi bắt đầu thu nhỏ (mặc định 12)
+tdv_sdk.getOptionScale = function (index, maxLength) {
+    var text = tdv_sdk.curQuestion.options[index] || "";
+    var maxLen = maxLength || 12; // Bắt đầu thu nhỏ khi > 12 ký tự
+    var minScale = 0.65;  // Scale nhỏ nhất
+    var maxScale = 1;  // Scale lớn nhất
+
+    var len = text.length;
+
+    if (len <= maxLen) {
+        return maxScale; // Giữ nguyên scale = 1 nếu text ngắn
+    }
+
+    // Tính toán: giảm dần từ 1.0 đến 0.5 theo độ dài
+    var ratio = Math.max(0, 1 - (len - maxLen) / 25);
+    var newScale = minScale + (maxScale - minScale) * ratio;
+
+    // Làm tròn 2 chữ số thập phân
+    return Math.round(Math.max(minScale, newScale) * 100) / 100;
+};
+
+// Phiên bản linh hoạt hơn - tính scale tuyến tính
+// Điều chỉnh scale mạnh hơn cho text dài
+tdv_sdk.getAnswerScale = function (index, maxLen) {
+    // Sử dụng getCurOptions thay vì getAnswerByIndex
+    var answer = tdv_sdk.getCurOptions(index);
+    if (!answer) return 1;
+
+    var standardLen = maxLen || 8;  // Độ dài chuẩn (giảm từ 10 xuống 8)
+    var len = String(answer).length;
+
+    // Scale mạnh hơn cho text dài
+    if (len <= standardLen) return 1;         // <= 8 ký tự: scale 1.0
+    if (len <= 10) return 0.9;               // 9-10 ký tự
+    if (len <= 12) return 0.85;               // 11-12 ký tự
+    if (len <= 14) return 0.8;               // 13-14 ký tự (Lunar New Year)
+    if (len <= 18) return 0.75;               // 15-18 ký tự
+    if (len <= 22) return 0.7;                // 19-22 ký tự
+    return 0.65;                              // > 22 ký tự: scale tối thiểu
+};
+
+// HÀM MỚI: Nhận TEXT trực tiếp thay vì index (tránh lỗi LoopIndex)
+// Sử dụng: tdv_sdk.getTextScale("Lunar New Year")
+tdv_sdk.getTextScale = function (text, maxLen) {
+    if (!text) return 1;
+
+    var standardLen = maxLen || 8;
+    var len = String(text).length;
+
+    // Scale mạnh hơn cho text dài
+    if (len <= standardLen) return 1;         // <= 8 ký tự: scale 1.0
+    if (len <= 10) return 0.85;               // 9-10 ký tự
+    if (len <= 12) return 0.75;               // 11-12 ký tự
+    if (len <= 14) return 0.65;               // 13-14 ký tự
+    if (len <= 18) return 0.55;               // 15-18 ký tự
+    if (len <= 22) return 0.5;                // 19-22 ký tự
+    return 0.45;                              // > 22 ký tự: scale tối thiểu
+};
+
+tdv_sdk.getCurCorrectOption = function () {
+    return tdv_sdk.correctAnswer;
+};
+
+tdv_sdk.getCorrectCount = function () {
+    return tdv_sdk.answers;
+};
+
+tdv_sdk.getCurImageUrl = function () {
+    return tdv_sdk.curQuestion.url;
+};
+
+tdv_sdk.nextQuestion = function () {
+    tdv_sdk.currentIndex++;
+};
+
+tdv_sdk.getCurIndex = function () {
+    return tdv_sdk.currentIndex;
+};
+
+// Alias cho getCurIndex (tương thích với các game khác)
+tdv_sdk.getCurrentLevel = function () {
+    return tdv_sdk.currentIndex;
+};
+
+tdv_sdk.getTotalQuestion = function () {
+    return tdv_sdk.totalquestion;
+};
+
+// Check xem còn câu hỏi không (trả về 1 nếu còn, 0 nếu hết)
+tdv_sdk.hasMoreQuestions = function () {
+    return tdv_sdk.currentIndex < tdv_sdk.totalquestion ? 1 : 0;
+};
+
+// Check xem đây có phải câu hỏi cuối cùng không (trả về 1 nếu đúng)
+tdv_sdk.isLastQuestion = function () {
+    return tdv_sdk.currentIndex >= tdv_sdk.totalquestion - 1 ? 1 : 0;
+};
+
+// Check xem game đã kết thúc chưa (trả về 1 nếu hết câu hỏi, 0 nếu còn)
+// Dùng trong Construct: If Browser.ExecJS("tdv_sdk.isGameOver()") = 1 → Game Over
+tdv_sdk.isGameOver = function () {
+    return tdv_sdk.currentIndex >= tdv_sdk.totalquestion ? 1 : 0;
+};
+
+// Lấy số câu hỏi còn lại
+tdv_sdk.getRemainingQuestions = function () {
+    return Math.max(0, tdv_sdk.totalquestion - tdv_sdk.currentIndex);
+};
+
+// Reset lại từ đầu (shuffle lại câu hỏi)
+tdv_sdk.reloadQuestions = function () {
+    tdv_sdk.currentIndex = 0;
+    tdv_sdk.listquestion = [];
+    for (let i = 0; i < tdv_sdk.totalquestion; i++) {
+        tdv_sdk.listquestion.push(tdv_sdk.list[i]);
+    }
+    console.log("🔄 Questions reloaded and shuffled!");
+    return 1;
+};
+
+tdv_sdk.getId = function (index) {
+    return tdv_sdk.list[index].id;
+};
+
+tdv_sdk.getAnswers = function (index) {
+    return tdv_sdk.answers[index];
+};
+
+// --- AUDIO: Hỗ trợ cả string đơn và mảng audio ---
+tdv_sdk.currentAudioQueue = [];
+tdv_sdk.currentAudioIndex = 0;
+
+tdv_sdk.playSound = function (name) {
+    console.log(`Play sound: ${name}`);
+    const audioSrc = `https://audio.senaai.vn/audio/en_female_1_${name.toLowerCase()}.mp3`;
+    const audio = new Audio(audioSrc);
+    audio.play();
+};
+
+// Phát audio câu hỏi (hỗ trợ cả string đơn và mảng)
+tdv_sdk.playSoundQuestion = function (rate) {
+    // Dừng audio cũ nếu đang chạy
+    if (window.audio && !window.audio.paused) {
+        window.audio.pause();
+        window.audio.currentTime = 0;
+    }
+
+    tdv_sdk.currentAudioQueue = [];
+    tdv_sdk.currentAudioIndex = 0;
+
+    var audioSource = tdv_sdk.curQuestion.audio;
+    var playbackRate = rate || 1;
+
+    if (!audioSource) {
+        console.log("Không có audio cho câu hỏi này.");
+        return;
+    }
+
+    if (Array.isArray(audioSource)) {
+        // Mảng audio (Hội thoại: context + question)
+        tdv_sdk.currentAudioQueue = audioSource;
+        tdv_sdk.playNextInQueue(playbackRate);
+    } else {
+        // Audio đơn
+        tdv_sdk.playSingleAudio(audioSource, playbackRate);
+    }
+};
+
+tdv_sdk.playSingleAudio = function (src, rate) {
+    var audio = new Audio(src);
+    audio.playbackRate = rate;
+    window.audio = audio;
+    audio.play().catch(e => console.error("Lỗi phát audio:", e));
+    console.log(`Đang phát: ${src}`);
+};
+
+tdv_sdk.playNextInQueue = function (rate) {
+    if (tdv_sdk.currentAudioIndex >= tdv_sdk.currentAudioQueue.length) {
+        console.log("Đã phát hết đoạn hội thoại.");
+        return;
+    }
+
+    var src = tdv_sdk.currentAudioQueue[tdv_sdk.currentAudioIndex];
+    var audio = new Audio(src);
+    audio.playbackRate = rate;
+    window.audio = audio;
+
+    audio.onended = function () {
+        tdv_sdk.currentAudioIndex++;
+        setTimeout(function () {
+            tdv_sdk.playNextInQueue(rate);
+        }, 300);
+    };
+
+    audio.play().catch(e => console.error("Lỗi phát audio:", e));
+    console.log(`Đang phát đoạn ${tdv_sdk.currentAudioIndex + 1}: ${src}`);
+};
+
+tdv_sdk.stopSound = function () {
+    if (window.audio && !window.audio.paused) {
+        window.audio.pause();
+        window.audio.currentTime = 0;
+    }
+    tdv_sdk.currentAudioQueue = [];
+    tdv_sdk.currentAudioIndex = 0;
+};
+
+// Tất cả 4 đáp án sẽ có cùng kích thước chữ
+tdv_sdk.getUniformScale = function () {
+    if (!tdv_sdk.curQuestion) return 1;
+
+    var options = tdv_sdk.curQuestion.options;
+    var maxLen = 0;
+
+    // Tìm độ dài của đáp án dài nhất
+    for (var i = 0; i < options.length; i++) {
+        var len = String(options[i] || "").length;
+        if (len > maxLen) maxLen = len;
+    }
+
+    // Tính scale dựa trên đáp án dài nhất
+    if (maxLen <= 8) return 1;
+    if (maxLen <= 10) return 0.95;
+    if (maxLen <= 12) return 0.9;
+    if (maxLen <= 14) return 0.85;
+    if (maxLen <= 18) return 0.8;
+    if (maxLen <= 22) return 0.75;
+    return 0.7;
+};
+
+
+tdv_sdk.goHome = function () {
+    window.location.href = "../";
+};
+
+// ==================== QUESTION TIMER (Mỗi câu hỏi 10 giây) ====================
+var gameTimer = {};
+gameTimer.questionTime = 10;  // Thời gian mỗi câu hỏi (giây)
+gameTimer.currentTime = gameTimer.questionTime;
+gameTimer.isRunning = false;
+gameTimer.intervalId = null;
+
+// Bắt đầu đếm ngược cho câu hỏi hiện tại
+gameTimer.startTimer = function () {
+    if (gameTimer.isRunning) {
+        console.warn("Timer is already running.");
+        return 0;
+    }
+
+    gameTimer.isRunning = true;
+    gameTimer.intervalId = setInterval(function () {
+        if (gameTimer.currentTime > 0) {
+            gameTimer.currentTime--;
+        } else {
+            gameTimer.stopTimer();
+            console.log("⏰ Question time is up!");
+        }
+    }, 1000);
+
+    console.log("⏱️ Question timer started:", gameTimer.questionTime, "seconds.");
+    return 1;
+};
+
+gameTimer.stopTimer = function () {
+    if (gameTimer.intervalId) {
+        clearInterval(gameTimer.intervalId);
+        gameTimer.intervalId = null;
+        gameTimer.isRunning = false;
+        console.log("Timer stopped.");
+    }
+};
+
+gameTimer.resetTimer = function () {
+    gameTimer.stopTimer();
+    gameTimer.currentTime = gameTimer.questionTime;
+    console.log("⏱️ Timer reset to:", gameTimer.questionTime, "seconds.");
+};
+
+// Reset timer cho câu hỏi mới (gọi khi loadquestion) - CHỈ RESET, KHÔNG START
+gameTimer.prepareQuestionTimer = function () {
+    gameTimer.stopTimer();
+    gameTimer.currentTime = gameTimer.questionTime;
+    console.log("⏱️ Timer prepared:", gameTimer.questionTime, "seconds. Press Space to start.");
+    return 1;
+};
+
+// Reset VÀ start timer (gọi khi bấm Space)
+gameTimer.resetQuestionTimer = function () {
+    gameTimer.stopTimer();
+    gameTimer.currentTime = gameTimer.questionTime;
+    gameTimer.startTimer();
+    console.log("🔄 Timer started:", gameTimer.questionTime, "seconds.");
+    return 1;
+};
+
+// Set thời gian mỗi câu hỏi (mặc định 10 giây)
+gameTimer.setQuestionTime = function (seconds) {
+    gameTimer.questionTime = seconds || 10;
+    console.log("⚙️ Question time set to:", gameTimer.questionTime, "seconds.");
+    return gameTimer.questionTime;
+};
+
+gameTimer.getFormattedTime = function () {
+    if (gameTimer.currentTime < 0) return "0:00";
+
+    const minutes = Math.floor(gameTimer.currentTime / 60);
+    const seconds = gameTimer.currentTime % 60;
+    const formattedSeconds = seconds < 10 ? '0' + seconds : seconds;
+
+    return minutes + ':' + formattedSeconds;
+};
+
+gameTimer.getCurrentTimeValue = function () {
+    return gameTimer.currentTime;
+};
+
+// Trả về thời gian hiển thị (luôn = 0 nếu đã hết giờ)
+gameTimer.getDisplayTime = function () {
+    // Nếu đã hết giờ (state >= 3), luôn trả về 0
+    if (tdv_sdk.questionState >= 3) {
+        return 0;
+    }
+    return Math.max(0, gameTimer.currentTime);
+};
+
+gameTimer.pauseTimer = function () {
+    if (gameTimer.isRunning) {
+        clearInterval(gameTimer.intervalId);
+        gameTimer.intervalId = null;
+        gameTimer.isRunning = false;
+        console.log("Timer paused at:", gameTimer.getFormattedTime());
+        return 1;
+    }
+    return 0;
+};
+
+gameTimer.resumeTimer = function () {
+    if (!gameTimer.isRunning && gameTimer.currentTime > 0) {
+        gameTimer.isRunning = true;
+        gameTimer.intervalId = setInterval(function () {
+            if (gameTimer.currentTime > 0) {
+                gameTimer.currentTime--;
+            } else {
+                gameTimer.stopTimer();
+                console.log("Time is up!");
+            }
+        }, 1000);
+
+        console.log("Timer resumed from:", gameTimer.getFormattedTime());
+        return 1;
+    }
+    return 0;
+};
+
+// ==================== GAME SCORE ====================
+var gameScore = {};
+gameScore.currentScore = 0;
+
+gameScore.addScore = function (points) {
+    const pts = parseInt(points) || 0;
+    if (pts > 0) {
+        gameScore.currentScore += pts;
+        console.log(`Score added: ${pts}. New score: ${gameScore.currentScore}`);
+    }
+    return gameScore.currentScore;
+};
+
+gameScore.resetScore = function () {
+    gameScore.currentScore = 0;
+    console.log("Score reset to 0.");
+    return 0;
+};
+
+gameScore.getScore = function () {
+    return gameScore.currentScore;
+};
+
+gameScore.deductScore = function (points) {
+    const pts = parseInt(points) || 0;
+    if (gameScore.currentScore >= pts) {
+        gameScore.currentScore -= pts;
+        console.log(`Score deducted: ${pts}. New score: ${gameScore.currentScore}`);
+    } else {
+        gameScore.currentScore = 0;
+        console.log(`Score deducted. New score is 0.`);
+    }
+    return gameScore.currentScore;
+};
+
+// ==================== GAME LIVES ====================
+var gameLives = {};
+gameLives.maxLives = 3;
+gameLives.currentLives = gameLives.maxLives;
+
+gameLives.resetLives = function () {
+    gameLives.currentLives = gameLives.maxLives;
+    console.log("Lives reset to:", gameLives.maxLives);
+    return gameLives.currentLives;
+};
+
+gameLives.loseLife = function () {
+    if (gameLives.currentLives > 0) {
+        gameLives.currentLives--;
+        console.log("Lost 1 life. Remaining:", gameLives.currentLives);
+    } else {
+        console.log("No lives left. Game Over condition.");
+    }
+    return gameLives.currentLives;
+};
+
+gameLives.getLives = function () {
+    return gameLives.currentLives;
+};
+
+// ==================== INSTRUCTIONS ====================
+tdv_sdk.getQuizInstructions = function () {
+    const instructions =
+        "                            🌟 HƯỚNG DẪN GAME: HÀNH TRÌNH CỦA THỎ 🌟\n\n" +
+        "🎯 MỤC TIÊU:\n" +
+        "   Giúp chú thỏ đi hết hành trình và đến đích! Trả lời đúng các câu hỏi để ghi thật nhiều điểm trên đường đi.\n\n" +
+        "🌀 CÁCH CHƠI:\n" +
+        "   1. Lắc xúc xắc: Chạm vào xúc xắc để quay.\n" +
+        "   2. Di chuyển: Chú thỏ sẽ đi theo số chấm xuất hiện trên xúc xắc.\n" +
+        "   3. Trả lời câu hỏi: Khi chú thỏ dừng lại, chọn đáp án đúng hiển thị trên màn hình.\n" +
+        "   4. Tiếp tục hành trình: Sau khi trả lời, bạn có thể quay lại xúc xắc ngay để đi tiếp.\n\n" +
+        "💡 ĐIỂM SỐ VÀ THỬ THÁCH:\n" +
+        "   ✅ Đúng: +100 điểm.\n" +
+        "   ❌ Sai: Không bị trừ điểm hay phạt.\n" +
+        "   🐺 Nguy hiểm: Nếu dừng ở ô **'SÓI'** (Wolf), bạn sẽ bị trừ 100 điểm ngay lập tức.\n\n" +
+        "🍀 Cùng chú thỏ phiêu lưu, trả lời câu hỏi và ghi thật nhiều điểm trên hành trình nhé!";
+
+    return instructions;
+};
+
+tdv_sdk.hasAudio = function () {
+    if (!tdv_sdk.curQuestion) return 0;
+    var audio = tdv_sdk.curQuestion.audio;
+    // Check nếu là mảng và có item
+    if (Array.isArray(audio) && audio.length > 0) return 1;
+    // Check nếu là string và không rỗng
+    if (typeof audio === 'string' && audio.trim() !== '') return 1;
+    return 0;
+};