/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	highScore: 0,
	coins: 0
});

/**** 
* Classes
****/ 
var Collectible = Container.expand(function (type) {
	var self = Container.call(this);
	self.type = type || 'coin';
	var collectibleGraphics = self.attachAsset(self.type, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.update = function () {
		self.y += self.speed;
		// Spin the collectible
		collectibleGraphics.rotation += 0.05;
		// Remove collectible when it goes off screen
		if (self.y > 2732 + collectibleGraphics.height) {
			self.destroy();
			// Find and remove from collectibles array
			var index = collectibles.indexOf(self);
			if (index !== -1) {
				collectibles.splice(index, 1);
			}
		}
	};
	return self;
});
var PlayerCar = Container.expand(function () {
	var self = Container.call(this);
	var carGraphics = self.attachAsset('car', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 15;
	self.maxSpeed = 25;
	self.health = 100;
	self.nitro = 100;
	self.usingNitro = false;
	self.dead = false;
	self.update = function () {
		if (self.dead) {
			return;
		}
		// Handle nitro usage
		if (self.usingNitro && self.nitro > 0) {
			self.nitro -= 1;
			roadObject.setSpeed(self.maxSpeed);
		} else {
			self.usingNitro = false;
			roadObject.setSpeed(self.speed);
		}
		// Regenerate nitro when not using
		if (!self.usingNitro && self.nitro < 100) {
			self.nitro += 0.1;
		}
		// Update UI
		updateUI();
	};
	self.damage = function (amount) {
		if (self.dead) {
			return;
		}
		self.health -= amount;
		// Flash red on damage
		LK.effects.flashObject(self, 0xff0000, 500);
		if (self.health <= 0) {
			self.health = 0;
			self.die();
		}
		// Update UI
		updateUI();
	};
	self.repair = function (amount) {
		if (self.dead) {
			return;
		}
		self.health += amount;
		if (self.health > 100) {
			self.health = 100;
		}
		// Update UI
		updateUI();
	};
	self.die = function () {
		if (self.dead) {
			return;
		}
		self.dead = true;
		// Tint car dark
		tween(carGraphics, {
			alpha: 0.5
		}, {
			duration: 1000
		});
		// Game over
		LK.setTimeout(function () {
			if (score > storage.highScore) {
				storage.highScore = score;
			}
			LK.showGameOver();
		}, 1000);
	};
	self.useNitro = function () {
		if (self.nitro > 0 && !self.usingNitro) {
			self.usingNitro = true;
			LK.getSound('nitroSound').play();
		}
	};
	self.stopNitro = function () {
		self.usingNitro = false;
	};
	return self;
});
var Road = Container.expand(function () {
	var self = Container.call(this);
	// Road background
	var roadBg = self.attachAsset('road', {
		anchorX: 0.5,
		anchorY: 0,
		y: 0
	});
	// Road lines
	self.lines = [];
	self.lineSpacing = 300;
	self.lineSpeed = 15;
	function createRoadLines() {
		// Clear existing lines
		for (var i = 0; i < self.lines.length; i++) {
			self.lines[i].destroy();
		}
		self.lines = [];
		// Create new lines for three lanes
		var linesCount = Math.ceil(2732 / self.lineSpacing) + 1;
		var laneOffsets = [-200, 0, 200]; // Offsets for three lanes
		for (var i = 0; i < linesCount; i++) {
			for (var j = 0; j < laneOffsets.length; j++) {
				var line = self.attachAsset('roadLine', {
					anchorX: 0.5,
					anchorY: 0.5,
					x: laneOffsets[j],
					y: i * self.lineSpacing
				});
				self.lines.push(line);
			}
		}
		// Add roadside assets to the edges of the road
		var roadsideLeft = self.attachAsset('roadSide', {
			anchorX: 1,
			anchorY: 0,
			x: -400,
			// Position to the left of the road
			y: 0
		});
		var roadsideRight = self.attachAsset('roadSide', {
			anchorX: 0,
			anchorY: 0,
			x: 400,
			// Position to the right of the road
			y: 0
		});
		self.addChild(roadsideLeft);
		self.addChild(roadsideRight);
		// Add background to the sides of the road
		var leftBackground = self.attachAsset('background', {
			anchorX: 1,
			anchorY: 0,
			x: -600,
			// Position further left
			y: 0
		});
		var rightBackground = self.attachAsset('background', {
			anchorX: 0,
			anchorY: 0,
			x: 600,
			// Position further right
			y: 0
		});
		self.addChild(leftBackground);
		self.addChild(rightBackground);
	}
	createRoadLines();
	self.update = function () {
		// Update road lines
		for (var i = 0; i < self.lines.length; i++) {
			self.lines[i].y += self.lineSpeed;
			// Reposition line if it goes out of view
			if (self.lines[i].y > 2732) {
				// Find the topmost line
				var topLine = self.lines[0];
				for (var j = 1; j < self.lines.length; j++) {
					if (self.lines[j].y < topLine.y) {
						topLine = self.lines[j];
					}
				}
				// Position this line above the topmost line
				self.lines[i].y = topLine.y - self.lineSpacing;
			}
		}
	};
	self.setSpeed = function (speed) {
		self.lineSpeed = speed;
	};
	return self;
});
var StatusBar = Container.expand(function (type) {
	var self = Container.call(this);
	self.type = type || 'health';
	var barColor = self.type === 'health' ? 0x2ecc71 : 0xf39c12;
	// Background
	var barBackground = self.attachAsset('barBg', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Actual bar
	var bar = self.attachAsset(self.type + 'Bar', {
		anchorX: 0.5,
		anchorY: 1,
		// Bottom anchor
		y: barBackground.height / 2 - 5 // Position at bottom of background with 5px padding
	});
	self.originalHeight = bar.height;
	self.setValue = function (value) {
		// Clamp value between 0 and 100
		value = Math.max(0, Math.min(100, value));
		// Set height based on percentage
		bar.height = value / 100 * self.originalHeight;
	};
	return self;
});
var TrafficCar = Container.expand(function () {
	var self = Container.call(this);
	// Randomly choose different colors for traffic cars
	var carAssets = ['trafficCarGreen', 'trafficCarYellow', 'trafficCarWhite'];
	var randomAsset = carAssets[Math.floor(Math.random() * carAssets.length)];
	var carGraphics = self.attachAsset(randomAsset, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = Math.random() * 3 + 5; // Random speed between 5 and 8
	self.update = function () {
		self.y += self.speed;
		// Remove car when it goes off screen
		if (self.y > 2732 + carGraphics.height) {
			self.destroy();
			// Find and remove from trafficCars array
			var index = trafficCars.indexOf(self);
			if (index !== -1) {
				trafficCars.splice(index, 1);
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x95a5a6 // Light gray background
});

/**** 
* Game Code
****/ 
// Game variables
// Game assets will be created by the engine based on usage in code
// Green car
// Yellow car
// White car
var roadObject;
var player;
var trafficCars = [];
var collectibles = [];
var score = 0;
var scoreText;
var healthBar;
var nitroBar;
var gameStarted = false;
var instructionsText;
var highScoreText;
var difficultyTimer;
var difficultyLevel = 1;
var spawnRateBase = 60;
// Initialize game elements
function initGame() {
	// Create road
	roadObject = new Road();
	roadObject.x = 2048 / 2; // Center horizontally
	game.addChild(roadObject);
	// Create player
	player = new PlayerCar();
	player.x = 2048 / 2;
	player.y = 2732 - 300; // Position near bottom
	game.addChild(player);
	// Initialize score
	score = 0;
	// Create score text
	scoreText = new Text2(score.toString(), {
		size: 100,
		fill: 0xFFFFFF
	});
	scoreText.anchor.set(0.5, 0);
	LK.gui.top.addChild(scoreText);
	// Create high score text
	highScoreText = new Text2("Best: " + storage.highScore, {
		size: 50,
		fill: 0xFFFFFF
	});
	highScoreText.anchor.set(0.5, 0);
	highScoreText.y = 110;
	LK.gui.top.addChild(highScoreText);
	// Create instructions text
	instructionsText = new Text2("Tap to start\nDrag to move your car\nDouble tap for nitro", {
		size: 80,
		fill: 0xFFFFFF
	});
	instructionsText.anchor.set(0.5, 0.5);
	LK.gui.center.addChild(instructionsText);
	// Create health bar
	healthBar = new StatusBar('health');
	healthBar.x = 80;
	healthBar.y = 2732 / 2;
	game.addChild(healthBar);
	// Create nitro bar
	nitroBar = new StatusBar('nitro');
	nitroBar.x = 2048 - 80;
	nitroBar.y = 2732 / 2;
	game.addChild(nitroBar);
	// Set initial UI values
	updateUI();
	// Play background music
	LK.playMusic('backgroundMusic', {
		fade: {
			start: 0,
			end: 0.3,
			duration: 1000
		}
	});
	// Start engine sound (looping)
	LK.getSound('carEngine').play();
}
// Update UI elements
function updateUI() {
	// Update score text
	scoreText.setText(score.toString());
	// Update health bar
	healthBar.setValue(player.health);
	// Update nitro bar
	nitroBar.setValue(player.nitro);
}
// Spawn traffic car
function spawnTrafficCar() {
	var car = new TrafficCar();
	var roadWidth = 800;
	var positionValid = false;
	var attempts = 0;
	while (!positionValid && attempts < 10) {
		var laneOffsets = [-200, 0, 200]; // Offsets for three lanes
		var randomLane = laneOffsets[Math.floor(Math.random() * laneOffsets.length)];
		car.x = 2048 / 2 + randomLane;
		car.y = -car.height;
		positionValid = true;
		for (var i = 0; i < trafficCars.length; i++) {
			// Check for overlap and ensure a minimum distance between cars
			if (car.intersects(trafficCars[i]) || Math.abs(car.x - trafficCars[i].x) < 120) {
				positionValid = false;
				break;
			}
		}
		attempts++;
	}
	if (positionValid) {
		game.addChild(car);
		trafficCars.push(car);
	}
}
// Spawn collectible
function spawnCollectible() {
	// Determine type of collectible
	var type = Math.random() < 0.7 ? 'coin' : Math.random() < 0.5 ? 'nitro' : 'repair';
	var collectible = new Collectible(type);
	// Position collectible randomly on the road
	var roadWidth = 800;
	var laneOffsets = [-200, 0, 200]; // Offsets for three lanes
	var randomLane = laneOffsets[Math.floor(Math.random() * laneOffsets.length)];
	collectible.x = 2048 / 2 + randomLane;
	collectible.y = -collectible.height;
	game.addChild(collectible);
	collectibles.push(collectible);
}
// Start the game
function startGame() {
	if (gameStarted) {
		return;
	}
	gameStarted = true;
	// Hide instructions
	tween(instructionsText, {
		alpha: 0
	}, {
		duration: 500
	});
	// Start increasing difficulty over time
	difficultyTimer = LK.setInterval(function () {
		difficultyLevel++;
		// Increase player speed
		player.speed = Math.min(player.speed + 1, player.maxSpeed);
		// Increase player max speed with nitro
		player.maxSpeed = Math.min(player.maxSpeed + 1, 35);
		// Update road speed
		roadObject.setSpeed(player.speed);
	}, 10000); // Increase difficulty every 10 seconds
}
// Check for collisions
function checkCollisions() {
	if (!gameStarted || player.dead) {
		return;
	}
	// Check collisions with traffic cars
	for (var i = trafficCars.length - 1; i >= 0; i--) {
		if (player.intersects(trafficCars[i])) {
			// Collision with traffic car
			LK.getSound('collision').play();
			player.damage(20);
			// Remove car
			trafficCars[i].destroy();
			trafficCars.splice(i, 1);
		}
	}
	// Check collisions with collectibles
	for (var i = collectibles.length - 1; i >= 0; i--) {
		if (player.intersects(collectibles[i])) {
			// Handle collectible based on type
			var collectible = collectibles[i];
			if (collectible.type === 'coin') {
				score += 10;
				storage.coins++;
				LK.getSound('coinCollect').play();
			} else if (collectible.type === 'nitro') {
				player.nitro = 100;
				LK.getSound('nitroSound').play();
			} else if (collectible.type === 'repair') {
				player.repair(30);
				LK.getSound('repairCollect').play();
			}
			// Remove collectible
			collectible.destroy();
			collectibles.splice(i, 1);
			// Update UI
			updateUI();
		}
	}
}
// Handle move events
function handleMove(x, y, obj) {
	if (!gameStarted || player.dead) {
		return;
	}
	// Move player
	if (dragNode) {
		// Limit movement to road width
		var roadWidth = 800;
		var halfRoadWidth = roadWidth / 2;
		var roadCenterX = 2048 / 2;
		var minX = roadCenterX - halfRoadWidth + 50;
		var maxX = roadCenterX + halfRoadWidth - 50;
		dragNode.x = Math.max(minX, Math.min(maxX, x));
	}
}
// Initialize the game
initGame();
// Event handlers
var dragNode = null;
var lastTapTime = 0;
game.down = function (x, y, obj) {
	// Double tap detection for nitro
	var currentTime = Date.now();
	if (currentTime - lastTapTime < 300) {
		// Double tap detected
		player.useNitro();
	}
	lastTapTime = currentTime;
	// Start game on tap
	if (!gameStarted) {
		startGame();
	}
	// Set drag node to player
	dragNode = player;
	handleMove(x, y, obj);
};
game.move = handleMove;
game.up = function (x, y, obj) {
	dragNode = null;
	player.stopNitro();
};
// Game update
game.update = function () {
	if (!gameStarted) {
		return;
	}
	// Update score based on time played (distance traveled)
	if (!player.dead) {
		score += 1;
		updateUI();
	}
	// Spawn traffic cars and collectibles based on difficulty
	var spawnRate = Math.max(spawnRateBase - difficultyLevel * 5, 15);
	if (LK.ticks % spawnRate === 0) {
		spawnTrafficCar();
	}
	if (LK.ticks % 180 === 0) {
		spawnCollectible();
	}
	// Check for collisions
	checkCollisions();
};

===================================================================
--- original.js
+++ change.js