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

/**** 
* Classes
****/ 
var Bike = Container.expand(function () {
	var self = Container.call(this);
	var bikeGraphics = self.attachAsset('bike', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0;
	self.maxSpeed = 15;
	self.acceleration = 0.3;
	self.deceleration = 0.2;
	self.turnSpeed = 3;
	self.angle = 0;
	self.isAccelerating = false;
	self.isBraking = false;
	self.lastY = self.y;
	self.lastSpeed = self.speed;
	return self;
});
var PowerUp = Container.expand(function (type, x, y) {
	var self = Container.call(this);
	self.powerType = type || 'speed';
	self.lastIntersecting = false;
	self.collected = false;
	var powerupGraphics = self.attachAsset('powerup', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.x = x;
	self.y = y;
	return self;
});
var RoadObstacle = Container.expand(function (type, x, y) {
	var self = Container.call(this);
	self.obstacleType = type || 'obstacle';
	self.lastIntersecting = false;
	var assetName = type === 'powerup' ? 'powerup' : 'obstacle';
	var obstacleGraphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.x = x;
	self.y = y;
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x228b22
});

/**** 
* Game Code
****/ 
var obstacles = [];
var powerups = [];
var roadElements = [];
var raceDistance = 0;
var targetDistance = 10000;
var gameSpeed = 2;
var isGameRunning = true;
// Bike
var bike = new Bike();
bike.x = 1024;
bike.y = 2200;
game.addChild(bike);
// UI Elements
var speedText = new Text2('0 KM/H', {
	size: 40,
	fill: 0xFFFFFF
});
speedText.anchor.set(0, 0);
speedText.x = 50;
speedText.y = 50;
LK.gui.topLeft.addChild(speedText);
var distanceText = new Text2('DISTANCE: 0M', {
	size: 35,
	fill: 0xFFFFFF
});
distanceText.anchor.set(0.5, 0);
LK.gui.top.addChild(distanceText);
var controlText = new Text2('TAP TO ACCELERATE', {
	size: 30,
	fill: 0xFFFFFF
});
controlText.anchor.set(0.5, 1);
controlText.y = -20;
LK.gui.bottom.addChild(controlText);
// Initialize racing track
function generateTrack() {
	// Create road segments
	for (var i = 0; i < 30; i++) {
		var roadSegment = LK.getAsset('road', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		roadSegment.x = 1024;
		roadSegment.y = -200 - i * 150;
		roadElements.push(roadSegment);
		game.addChild(roadSegment);
	}
	// Spawn initial obstacles and powerups
	spawnObstacles();
}
function spawnObstacles() {
	// Spawn obstacles
	for (var i = 0; i < 15; i++) {
		var obstacle = new RoadObstacle('obstacle');
		obstacle.x = 700 + Math.random() * 648; // Keep on road
		obstacle.y = -500 - i * 300;
		obstacles.push(obstacle);
		game.addChild(obstacle);
	}
	// Spawn powerups
	for (var i = 0; i < 5; i++) {
		var powerup = new PowerUp('speed');
		powerup.x = 700 + Math.random() * 648;
		powerup.y = -800 - i * 800;
		powerups.push(powerup);
		game.addChild(powerup);
	}
}
function updateBikePhysics() {
	// Handle acceleration and deceleration
	if (bike.isAccelerating) {
		bike.speed = Math.min(bike.speed + bike.acceleration, bike.maxSpeed);
	} else {
		bike.speed = Math.max(bike.speed - bike.deceleration, 0);
	}
	// Update speedometer with smooth tween
	var displaySpeed = Math.round(bike.speed * 10);
	speedText.setText(displaySpeed + ' KM/H');
	// Apply engine sound based on speed
	if (bike.speed > 0) {
		LK.getSound('bikeEngine').play();
	}
}
function spawnNewObstacles() {
	// Spawn new obstacles ahead of the bike
	if (Math.random() < 0.3) {
		var obstacle = new RoadObstacle('obstacle');
		obstacle.x = 700 + Math.random() * 648;
		obstacle.y = -100;
		obstacles.push(obstacle);
		game.addChild(obstacle);
	}
	// Spawn powerups occasionally
	if (Math.random() < 0.1) {
		var powerup = new PowerUp('speed');
		powerup.x = 700 + Math.random() * 648;
		powerup.y = -100;
		powerups.push(powerup);
		game.addChild(powerup);
	}
}
function checkCollisions() {
	// Check obstacle collisions
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obstacle = obstacles[i];
		var currentIntersecting = bike.intersects(obstacle);
		if (!obstacle.lastIntersecting && currentIntersecting) {
			// Collision detected - crash bike
			LK.getSound('crash').play();
			tween(bike, {
				speed: 0
			}, {
				duration: 500,
				easing: tween.easeOut
			});
			LK.effects.flashScreen(0xff0000, 500);
			bike.speed = 0;
		}
		obstacle.lastIntersecting = currentIntersecting;
	}
	// Check powerup collection
	for (var i = powerups.length - 1; i >= 0; i--) {
		var powerup = powerups[i];
		var currentIntersecting = bike.intersects(powerup);
		if (!powerup.lastIntersecting && currentIntersecting && !powerup.collected) {
			// Powerup collected
			powerup.collected = true;
			LK.getSound('powerup').play();
			bike.maxSpeed += 3;
			tween(powerup, {
				alpha: 0,
				scaleX: 2,
				scaleY: 2
			}, {
				duration: 300,
				onFinish: function onFinish() {
					powerup.destroy();
					powerups.splice(i, 1);
				}
			});
			LK.setScore(LK.getScore() + 50);
		}
		powerup.lastIntersecting = currentIntersecting;
	}
}
generateTrack();
game.down = function (x, y, obj) {
	// Start accelerating
	bike.isAccelerating = true;
};
game.up = function (x, y, obj) {
	// Stop accelerating
	bike.isAccelerating = false;
};
game.move = function (x, y, obj) {
	// Steer bike left and right
	var deltaX = x - bike.x;
	if (Math.abs(deltaX) > 20) {
		bike.x += deltaX * 0.05;
		// Keep bike on track
		bike.x = Math.max(700, Math.min(1348, bike.x));
	}
};
game.update = function () {
	if (!isGameRunning) return;
	// Update bike physics
	updateBikePhysics();
	// Move world elements down based on bike speed
	var worldSpeed = gameSpeed + bike.speed * 0.5;
	// Move road segments
	for (var i = 0; i < roadElements.length; i++) {
		var road = roadElements[i];
		road.y += worldSpeed;
		if (road.y > 2832) {
			road.y = roadElements[(i - 1 + roadElements.length) % roadElements.length].y - 150;
		}
	}
	// Move obstacles
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obstacle = obstacles[i];
		obstacle.y += worldSpeed;
		if (obstacle.y > 2832) {
			obstacle.destroy();
			obstacles.splice(i, 1);
		}
	}
	// Move powerups
	for (var i = powerups.length - 1; i >= 0; i--) {
		var powerup = powerups[i];
		powerup.y += worldSpeed;
		if (powerup.y > 2832) {
			powerup.destroy();
			powerups.splice(i, 1);
		}
	}
	// Update race progress
	raceDistance += worldSpeed * 0.1;
	distanceText.setText('DISTANCE: ' + Math.round(raceDistance) + 'M');
	// Check win condition
	if (raceDistance >= targetDistance) {
		isGameRunning = false;
		LK.showYouWin();
	}
	// Spawn new obstacles and powerups
	if (LK.ticks % 60 === 0) {
		spawnNewObstacles();
	}
	// Check collisions
	checkCollisions();
	// Keep bike in racing bounds
	bike.x = Math.max(700, Math.min(1348, bike.x));
};

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