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

/**** 
* Classes
****/ 
var Tile = Container.expand(function () {
	var self = Container.call(this);
	var tileGraphics = self.attachAsset('tile', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8; // Will be updated dynamically when tile is created
	self.lane = 0;
	self.lastY = 0;
	self.pianoNotes = ['pianoC'];
	self.selectedNote = self.pianoNotes[Math.floor(Math.random() * self.pianoNotes.length)];
	self.update = function () {
		self.lastY = self.y;
		self.y += self.speed;
	};
	self.down = function (x, y, obj) {
		var targetY = 2732 - 100;
		if (Math.abs(self.y - targetY) < 100) {
			LK.setScore(LK.getScore() + 5);
			LK.getSound('pianoC').play();
			LK.getSound('bass').play();
			scoreTxt.setText(LK.getScore());
			// Update high score if current score exceeds it
			if (LK.getScore() > highScore) {
				highScore = LK.getScore();
				storage.highScore = highScore;
				highScoreTxt.setText('High: ' + highScore);
			}
			// Update game speed when score increases
			updateGameSpeed();
			// Update speed for all existing tiles - increased progression
			for (var j = 0; j < tiles.length; j++) {
				tiles[j].speed = baseSpeed + Math.floor(LK.getScore() / 50) * 0.8;
			}
			self.destroy();
			for (var i = tiles.length - 1; i >= 0; i--) {
				if (tiles[i] === self) {
					tiles.splice(i, 1);
					break;
				}
			}
			// Event handled successfully - no propagation control needed
		} else {
			LK.setScore(0);
			LK.getSound('buzz').play();
			scoreTxt.setText(LK.getScore());
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2a2a2a
});

/**** 
* Game Code
****/ 
var laneWidth = 2048 / 4;
var lanes = [];
var tiles = [];
var laneConsecutiveCount = [0, 0, 0, 0]; // Track consecutive tiles per lane
// Create lane separators
for (var i = 1; i < 4; i++) {
	var separator = game.addChild(LK.getAsset('lane', {
		anchorX: 0.5,
		anchorY: 0
	}));
	separator.x = i * laneWidth;
	separator.y = 0;
}
;
// Start main beat music immediately
LK.playMusic('bgbeat', {
	volume: 2
});
// Create score text
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xffffff
});
scoreTxt.anchor.set(0.5, 0);
scoreTxt.y = 80;
LK.gui.top.addChild(scoreTxt);
// Create high score text - reset to 0 at start of each game
var highScore = 0;
storage.highScore = 0;
var highScoreTxt = new Text2('High: ' + highScore, {
	size: 80,
	fill: 0xcccccc
});
highScoreTxt.anchor.set(0.5, 0);
highScoreTxt.y = 200;
LK.gui.top.addChild(highScoreTxt);
// Create bottom line marker
var bottomLine = game.addChild(LK.getAsset('bottomLine', {
	anchorX: 0.5,
	anchorY: 0.5
}));
bottomLine.x = 2048 / 2;
bottomLine.y = 2732 - 100;
bottomLine.width = 2048;
// Base spawn interval and speed - made more challenging
var baseSpawnInterval = 400;
var baseSpeed = 8;
// Spawn tiles with dynamic interval based on score
var tileSpawnTimer = LK.setInterval(function () {
	// Start spawning multiple tiles at higher scores for increased difficulty
	var tilesToSpawn = 1;
	if (LK.getScore() >= 100) tilesToSpawn = Math.random() < 0.2 ? 2 : 1;
	if (LK.getScore() >= 300) tilesToSpawn = Math.random() < 0.3 ? 2 : 1;
	for (var tileCount = 0; tileCount < tilesToSpawn; tileCount++) {
		var newTile = new Tile();
		var randomLane = Math.floor(Math.random() * 4);
		// Check if this lane already has 3 consecutive tiles, if so pick a different lane
		var attempts = 0;
		while (laneConsecutiveCount[randomLane] >= 3 && attempts < 10) {
			randomLane = Math.floor(Math.random() * 4);
			attempts++;
		}
		// If all lanes are at max, reset all counters and use original lane
		if (attempts >= 10) {
			for (var k = 0; k < 4; k++) {
				laneConsecutiveCount[k] = 0;
			}
			randomLane = Math.floor(Math.random() * 4);
		}
		newTile.x = randomLane * laneWidth + laneWidth / 2;
		newTile.y = -75 - tileCount * 200; // Offset multiple tiles vertically
		newTile.lane = randomLane;
		newTile.lastY = newTile.y;
		// Set speed based on current score - increase by 0.8 every 50 points
		newTile.speed = baseSpeed + Math.floor(LK.getScore() / 50) * 0.8;
		// Update consecutive count for this lane
		laneConsecutiveCount[randomLane]++;
		// Reset other lanes' consecutive count
		for (var j = 0; j < 4; j++) {
			if (j !== randomLane) {
				laneConsecutiveCount[j] = 0;
			}
		}
		tiles.push(newTile);
		game.addChild(newTile);
	}
}, baseSpawnInterval);
// Function to update spawn rate based on score
function updateGameSpeed() {
	// Calculate new spawn interval - decrease by 30ms every 50 points (minimum 150ms)
	var newInterval = Math.max(150, baseSpawnInterval - Math.floor(LK.getScore() / 50) * 30);
	LK.clearInterval(tileSpawnTimer);
	tileSpawnTimer = LK.setInterval(function () {
		// Advanced difficulty: spawn multiple tiles simultaneously at higher scores
		var tilesToSpawn = 1;
		if (LK.getScore() >= 200) tilesToSpawn = Math.random() < 0.3 ? 2 : 1;
		if (LK.getScore() >= 500) tilesToSpawn = Math.random() < 0.4 ? 2 : 1;
		if (LK.getScore() >= 1000) tilesToSpawn = Math.random() < 0.2 ? 3 : Math.random() < 0.5 ? 2 : 1;
		for (var tileCount = 0; tileCount < tilesToSpawn; tileCount++) {
			var newTile = new Tile();
			var randomLane = Math.floor(Math.random() * 4);
			// Check if this lane already has 3 consecutive tiles, if so pick a different lane
			var attempts = 0;
			while (laneConsecutiveCount[randomLane] >= 3 && attempts < 10) {
				randomLane = Math.floor(Math.random() * 4);
				attempts++;
			}
			// If all lanes are at max, reset all counters and use original lane
			if (attempts >= 10) {
				for (var k = 0; k < 4; k++) {
					laneConsecutiveCount[k] = 0;
				}
				randomLane = Math.floor(Math.random() * 4);
			}
			newTile.x = randomLane * laneWidth + laneWidth / 2;
			newTile.y = -75 - tileCount * 200; // Offset multiple tiles vertically
			newTile.lane = randomLane;
			newTile.lastY = newTile.y;
			// Set speed based on current score - increase by 0.8 every 50 points
			newTile.speed = baseSpeed + Math.floor(LK.getScore() / 50) * 0.8;
			// Update consecutive count for this lane
			laneConsecutiveCount[randomLane]++;
			// Reset other lanes' consecutive count
			for (var j = 0; j < 4; j++) {
				if (j !== randomLane) {
					laneConsecutiveCount[j] = 0;
				}
			}
			tiles.push(newTile);
			game.addChild(newTile);
		}
	}, newInterval);
}
game.down = function (x, y, obj) {
	// Only reset score if clicking on empty area (not on tiles)
	// The tile's own down handler will handle scoring when clicked correctly
	var clickedOnTile = false;
	for (var i = 0; i < tiles.length; i++) {
		var tile = tiles[i];
		var tileBounds = {
			x: tile.x - 200,
			// tile width/2
			y: tile.y - 75,
			// tile height/2
			width: 400,
			height: 150
		};
		if (x >= tileBounds.x && x <= tileBounds.x + tileBounds.width && y >= tileBounds.y && y <= tileBounds.y + tileBounds.height) {
			clickedOnTile = true;
			break;
		}
	}
	if (!clickedOnTile) {
		LK.setScore(0);
		LK.getSound('buzz').play();
		scoreTxt.setText(LK.getScore());
	}
};
game.update = function () {
	// Update tiles and check for missed tiles
	for (var i = tiles.length - 1; i >= 0; i--) {
		var tile = tiles[i];
		// Check if tile went off screen (missed)
		if (tile.lastY < 2732 && tile.y >= 2732) {
			LK.setScore(0);
			LK.getSound('buzz').play();
			scoreTxt.setText(LK.getScore());
			tile.destroy();
			tiles.splice(i, 1);
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -25,9 +25,9 @@
 	self.down = function (x, y, obj) {
 		var targetY = 2732 - 100;
 		if (Math.abs(self.y - targetY) < 100) {
 			LK.setScore(LK.getScore() + 5);
-			LK.getSound(self.selectedNote).play();
+			LK.getSound('pianoC').play();
 			LK.getSound('bass').play();
 			scoreTxt.setText(LK.getScore());
 			// Update high score if current score exceeds it
 			if (LK.getScore() > highScore) {