/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
var Note = Container.expand(function () {
	var self = Container.call(this);
	var hitZone = self.attachAsset('hit', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.6,
		scaleY: 1.6
	});
	hitZone.alpha = 0.4;
	var hitAccuracy = self.attachAsset('hit', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 2.5,
		scaleY: 2.5
	});
	hitAccuracy.alpha = 0.25;
	var hitAccuracyTargetScale = 1.6;
	var hitAccuracyStartScale = 3.4;
	hitAccuracy.scaleX = hitAccuracyStartScale;
	hitAccuracy.scaleY = hitAccuracyStartScale;
	tween(hitAccuracy, {
		scaleX: hitAccuracyTargetScale,
		scaleY: hitAccuracyTargetScale
	}, {
		duration: 1000 / speed
	});
	var noteAsset = self.attachAsset('note', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.numberText = new Text2('1', {
		size: 150,
		fill: 0x000000
	});
	self.numberText.anchor.set(0.5, 0.5);
	self.addChild(self.numberText);
	self.setNumber = function (num) {
		self.numberText.setText(num.toString());
	};
	var margin = 100;
	self.x = margin + Math.random() * (2048 - 2 * margin);
	self.y = margin + Math.random() * (2732 - 2 * margin);
	var MARVELOUS_WINDOW = 30;
	var PERFECT_WINDOW = 70;
	var GOOD_WINDOW = 120;
	var BAD_WINDOW = 180;
	var FAIL_WINDOW = 250;
	self.spawnTime = Date.now();
	self.hitZoneTime = self.spawnTime + 1000 / speed;
	function showFeedback(result, msValue) {
		var colorMap = {
			marvelous: 0x00fffc,
			perfect: 0x00ff00,
			good: 0xffff00,
			bad: 0xffa500,
			fail: 0xff0000
		};
		var color = colorMap[result] || 0xffffff;
		var msText = "";
		if (typeof msValue === "number") {
			var msAbs = Math.abs(Math.round(msValue));
			msText = " / " + (msValue > 0 ? "-" : "") + msAbs + "ms";
		}
		var feedback = new Text2(result.toUpperCase() + msText, {
			size: 120,
			fill: "#" + ("000000" + color.toString(16)).slice(-6)
		});
		feedback.anchor.set(0.5, 0);
		feedback.x = 2048 / 2;
		feedback.y = 120;
		game.addChild(feedback);
		tween(feedback, {
			alpha: 0,
			y: feedback.y - 60
		}, {
			duration: 500
		});
		LK.setTimeout(function () {
			feedback.destroy();
		}, 500);
	}
	self.down = function (x, y, obj) {
		// Only allow if this note is the first in activeNotes
		if (activeNotes.length === 0 || activeNotes[0] !== self) {
			// Not the first note, ignore press
			return;
		}
		var now = Date.now();
		var msDiff = now - self.hitZoneTime;
		var absMs = Math.abs(msDiff);
		var result = "fail";
		if (absMs <= MARVELOUS_WINDOW) {
			result = "marvelous";
			marvelousCount++;
		} else if (absMs <= PERFECT_WINDOW) {
			result = "perfect";
			perfectCount++;
		} else if (absMs <= GOOD_WINDOW) {
			result = "good";
			goodCount++;
		} else if (absMs <= BAD_WINDOW) {
			result = "bad";
			badCount++;
		} else if (absMs <= FAIL_WINDOW) {
			result = "fail";
			failCount++;
		}
		if (now < self.spawnTime + 0.2 * (self.hitZoneTime - self.spawnTime)) {
			result = "fail";
			failCount++;
		}
		updateAccuracyDisplay();
		LK.getSound('hitSound').play();
		showFeedback(result, msDiff);
		removeNoteFromActive(self);
		self.destroy();
	};
	self.update = function () {
		var now = Date.now();
		if (now - self.hitZoneTime > FAIL_WINDOW) {
			failCount++;
			updateAccuracyDisplay();
			showFeedback("fail", undefined);
			removeNoteFromActive(self);
			self.destroy();
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
var ms;
var time = 0;
var gameStartTime;
var gameStart;
var timerText;
var speed = 1.3;
var note;
var life = 100;
var combo = 0;
var score = 0;
var marvelousCount = 0;
var perfectCount = 0;
var goodCount = 0;
var badCount = 0;
var failCount = 0;
var noteCounter = 0;
var activeNotes = [];
var accuracyDisplayConfig = [{
	label: 'Marvelous',
	color: 0x00FFFC,
	yOffset: -300,
	type: 'marvelous'
}, {
	label: 'Perfect',
	color: 0x00FF00,
	yOffset: -240,
	type: 'perfect'
}, {
	label: 'Good',
	color: 0xFFFF00,
	yOffset: -180,
	type: 'good'
}, {
	label: 'Bad',
	color: 0xFFA500,
	yOffset: -120,
	type: 'bad'
}, {
	label: 'Fail',
	color: 0xFF0000,
	yOffset: -60,
	type: 'fail'
}];
var accuracyTexts = {};
function createAccuracyText(label, color, yOffset) {
	var txt = new Text2(label + ': 0', {
		size: 40,
		fill: color
	});
	txt.anchor.set(1, 0);
	txt.x = -20;
	txt.y = yOffset;
	LK.gui.bottomRight.addChild(txt);
	return txt;
}
// Reusable function to create notes at specific times
var scheduledNotes = [];
function addNote(timeString, x, y) {
	// Convert time string format "M:SS.CC" or "MM:SS.CC" to milliseconds
	var parts = timeString.split(':');
	var minutes = parseInt(parts[0]);
	var secondsParts = parts[1].split('.');
	var seconds = parseInt(secondsParts[0]);
	var centiseconds = parseInt(secondsParts[1]);
	var totalMs = minutes * 60 * 1000 + seconds * 1000 + centiseconds * 10;
	scheduledNotes.push({
		time: totalMs,
		created: false,
		x: x,
		y: y
	});
}
function createNoteAtPosition(x, y) {
	var newNote = new Note();
	// Use random position if x is undefined, null, or 0
	if (x === undefined || x === null || x === 0) {
		newNote.x = 100 + Math.random() * (2048 - 200);
	} else {
		newNote.x = x;
	}
	// Use random position if y is undefined, null, or 0
	if (y === undefined || y === null || y === 0) {
		newNote.y = 100 + Math.random() * (2732 - 200);
	} else {
		newNote.y = y;
	}
	noteCounter++;
	newNote.orderNumber = noteCounter;
	newNote.setNumber(activeNotes.length + 1);
	activeNotes.push(newNote);
	// Set alpha and interactivity: only first note is fully opaque and interactive
	if (activeNotes.length === 1) {
		newNote.alpha = 1;
		newNote.interactive = true;
	} else {
		newNote.alpha = 0.8;
		newNote.interactive = false;
	}
	game.addChild(newNote);
	return newNote;
}
function updateNoteNumbers() {
	for (var i = 0; i < activeNotes.length; i++) {
		activeNotes[i].setNumber(i + 1);
		// Only the first note is fully opaque and interactive
		if (i === 0) {
			activeNotes[i].alpha = 1;
			activeNotes[i].interactive = true;
		} else {
			activeNotes[i].alpha = 0.8;
			activeNotes[i].interactive = false;
		}
	}
}
function removeNoteFromActive(note) {
	var index = activeNotes.indexOf(note);
	if (index > -1) {
		activeNotes.splice(index, 1);
		updateNoteNumbers();
	}
}
accuracyDisplayConfig.forEach(function (cfg) {
	accuracyTexts[cfg.type] = createAccuracyText(cfg.label, cfg.color, cfg.yOffset);
});
function updateAccuracyDisplay() {
	accuracyTexts.marvelous.setText('Marvelous: ' + marvelousCount);
	accuracyTexts.perfect.setText('Perfect: ' + perfectCount);
	accuracyTexts.good.setText('Good: ' + goodCount);
	accuracyTexts.bad.setText('Bad: ' + badCount);
	accuracyTexts.fail.setText('Fail: ' + failCount);
}
/*
* Initializations
*/
// Add play button
var playButton = new Text2('PLAY', {
	size: 180,
	fill: 0x00FF00
});
playButton.anchor.set(0.5, 0.5);
playButton.x = 2048 / 2;
playButton.y = 2732 / 2;
playButton.interactive = true;
playButton.buttonMode = true;
playButton.alpha = 1;
LK.gui.center.addChild(playButton);
var gameStarted = false;
var scheduledNotesBackup = [{
	timeString: "0:01.75",
	x: 0,
	y: 0
}, {
	timeString: "0:03.75",
	x: 0,
	y: 0
}, {
	timeString: "0:05.75",
	x: 0,
	y: 0
}, {
	timeString: "0:07.75",
	x: 0,
	y: 0
}, {
	timeString: "0:09.75",
	x: 0,
	y: 0
}, {
	timeString: "0:11.75",
	x: 0,
	y: 0
}, {
	timeString: "0:13.75",
	x: 0,
	y: 0
}, {
	timeString: "0:15.75",
	x: 0,
	y: 0
}];
// Hide timer until game starts
timerText = new Text2('0:00.00', {
	size: 60,
	fill: 0xFFFFFF
});
timerText.anchor.set(0.5, 0);
timerText.x = 0;
timerText.y = 50;
timerText.alpha = 0;
LK.gui.top.addChild(timerText);
function startGame() {
	if (gameStarted) return;
	gameStarted = true;
	// Remove play button
	playButton.destroy();
	// Show timer
	timerText.alpha = 1;
	// Reset scheduledNotes
	scheduledNotes = [];
	for (var i = 0; i < scheduledNotesBackup.length; i++) {
		var n = scheduledNotesBackup[i];
		addNote(n.timeString, n.x, n.y);
	}
	// Start music
	LK.playMusic('Tutorial');
	// Set game start time
	gameStartTime = Date.now();
}
playButton.down = function (x, y, obj) {
	startGame();
};
game.update = function () {
	if (!gameStarted) return;
	var currentTime = Date.now();
	var elapsedMs = currentTime - gameStartTime;
	var totalSeconds = Math.floor(elapsedMs / 1000);
	var minutes = Math.floor(totalSeconds / 60);
	var seconds = totalSeconds % 60;
	var centiseconds = Math.floor(elapsedMs % 1000 / 10);
	var timeString = minutes + ':' + (seconds < 10 ? '0' : '') + seconds + '.' + (centiseconds < 10 ? '0' : '') + centiseconds;
	timerText.setText(timeString);
	// Check scheduled notes
	for (var i = 0; i < scheduledNotes.length; i++) {
		var scheduled = scheduledNotes[i];
		if (!scheduled.created && elapsedMs >= scheduled.time) {
			createNoteAtPosition(scheduled.x, scheduled.y);
			scheduled.created = true;
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -279,26 +279,87 @@
 }
 /*
 * Initializations
 */
-gameStartTime = Date.now();
+// Add play button
+var playButton = new Text2('PLAY', {
+	size: 180,
+	fill: 0x00FF00
+});
+playButton.anchor.set(0.5, 0.5);
+playButton.x = 2048 / 2;
+playButton.y = 2732 / 2;
+playButton.interactive = true;
+playButton.buttonMode = true;
+playButton.alpha = 1;
+LK.gui.center.addChild(playButton);
+var gameStarted = false;
+var scheduledNotesBackup = [{
+	timeString: "0:01.75",
+	x: 0,
+	y: 0
+}, {
+	timeString: "0:03.75",
+	x: 0,
+	y: 0
+}, {
+	timeString: "0:05.75",
+	x: 0,
+	y: 0
+}, {
+	timeString: "0:07.75",
+	x: 0,
+	y: 0
+}, {
+	timeString: "0:09.75",
+	x: 0,
+	y: 0
+}, {
+	timeString: "0:11.75",
+	x: 0,
+	y: 0
+}, {
+	timeString: "0:13.75",
+	x: 0,
+	y: 0
+}, {
+	timeString: "0:15.75",
+	x: 0,
+	y: 0
+}];
+// Hide timer until game starts
 timerText = new Text2('0:00.00', {
 	size: 60,
 	fill: 0xFFFFFF
 });
 timerText.anchor.set(0.5, 0);
 timerText.x = 0;
 timerText.y = 50;
+timerText.alpha = 0;
 LK.gui.top.addChild(timerText);
-// Play background music
-LK.playMusic('Tutorial');
-// Example usage: addNote("0:01.00") will create a note at 1 second
-// addNote("0:02.00") will create a note at 2 seconds
-// addNote("0:03.50") will create a note at 3.5 seconds
-// Add 5 random notes
-addNote("0:01.50", 1000, 400);
-addNote("0:02.70", 1000, 550);
+function startGame() {
+	if (gameStarted) return;
+	gameStarted = true;
+	// Remove play button
+	playButton.destroy();
+	// Show timer
+	timerText.alpha = 1;
+	// Reset scheduledNotes
+	scheduledNotes = [];
+	for (var i = 0; i < scheduledNotesBackup.length; i++) {
+		var n = scheduledNotesBackup[i];
+		addNote(n.timeString, n.x, n.y);
+	}
+	// Start music
+	LK.playMusic('Tutorial');
+	// Set game start time
+	gameStartTime = Date.now();
+}
+playButton.down = function (x, y, obj) {
+	startGame();
+};
 game.update = function () {
+	if (!gameStarted) return;
 	var currentTime = Date.now();
 	var elapsedMs = currentTime - gameStartTime;
 	var totalSeconds = Math.floor(elapsedMs / 1000);
 	var minutes = Math.floor(totalSeconds / 60);