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

/**** 
* Classes
****/ 
var Collectible = Container.expand(function () {
	var self = Container.call(this);
	self.init = function (type) {
		self.type = type;
		var assetType;
		switch (type) {
			case 'coin':
				assetType = 'coin';
				break;
			case 'shield':
				assetType = 'shield';
				break;
			case 'speedBoost':
				assetType = 'speedBoost';
				break;
			default:
				assetType = 'coin';
		}
		self.collectibleGraphics = self.attachAsset(assetType, {
			anchorX: 0.5,
			anchorY: 0.5
		});
		self.width = self.collectibleGraphics.width;
		self.height = self.collectibleGraphics.height;
		self.lane = 0; // Single lane
		self.x = LANE_POSITIONS[self.lane];
		// Animation
		self.collectibleGraphics.rotation = 0;
		return self;
	};
	self.update = function () {
		self.y += gameSpeed.value;
		// Rotate collectible
		self.collectibleGraphics.rotation += 0.05;
		// Check if the collectible is off-screen
		if (self.y > 2732 + self.height) {
			self.active = false;
		}
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = playerGraphics.width;
	self.height = playerGraphics.height;
	self.speed = 0;
	self.lane = 1; // Center lane
	self.shielded = false;
	self.speedBoostActive = false;
	self.speedBoostTimer = 0;
	self.shieldTimer = 0;
	self.shieldVisual = self.attachAsset('shield', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0
	});
	self.shieldVisual.scale.set(1.5, 1.5);
	self.moveHorizontally = function (deltaX) {
		self.x += deltaX;
		// Ensure the player doesn't move out of the road boundaries
		if (self.x < LANE_POSITIONS[0] - LANE_WIDTH / 2) {
			self.x = LANE_POSITIONS[0] - LANE_WIDTH / 2;
		} else if (self.x > LANE_POSITIONS[0] + LANE_WIDTH / 2) {
			self.x = LANE_POSITIONS[0] + LANE_WIDTH / 2;
		}
	};
	self.activateShield = function () {
		self.shielded = true;
		self.shieldTimer = 5 * 60; // 5 seconds at 60fps
		tween(self.shieldVisual, {
			alpha: 0.7
		}, {
			duration: 300
		});
	};
	self.activateSpeedBoost = function () {
		self.speedBoostActive = true;
		self.speedBoostTimer = 3 * 60; // 3 seconds at 60fps
		tween(gameSpeed, {
			value: BASE_GAME_SPEED * 1.5
		}, {
			duration: 300
		});
	};
	self.update = function () {
		if (self.shielded) {
			self.shieldTimer--;
			if (self.shieldTimer <= 0) {
				self.shielded = false;
				tween(self.shieldVisual, {
					alpha: 0
				}, {
					duration: 300
				});
			}
		}
		if (self.speedBoostActive) {
			self.speedBoostTimer--;
			if (self.speedBoostTimer <= 0) {
				self.speedBoostActive = false;
				tween(gameSpeed, {
					value: BASE_GAME_SPEED
				}, {
					duration: 500
				});
			}
		}
	};
	return self;
});
var RoadSegment = Container.expand(function () {
	var self = Container.call(this);
	self.init = function () {
		self.roadGraphics = self.attachAsset('road', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		self.dividers = [];
		// Create lane dividers
		for (var i = 0; i < 20; i++) {
			// No lane dividers needed for a single lane
		}
		return self;
	};
	self.update = function () {
		for (var i = 0; i < self.dividers.length; i++) {
			var divider = self.dividers[i];
			divider.y += gameSpeed.value;
			// Reset divider position if it's off-screen
			if (divider.y > 2732) {
				divider.y = -100;
			}
		}
	};
	return self;
});
var Vehicle = Container.expand(function () {
	var self = Container.call(this);
	self.init = function (type) {
		self.type = type;
		var assetType;
		switch (type) {
			case 'car1':
			case 'car2':
			case 'car3':
				assetType = type;
				break;
			case 'truck':
				assetType = 'truck';
				break;
			default:
				assetType = 'car1';
		}
		self.vehicleGraphics = self.attachAsset(assetType, {
			anchorX: 0.5,
			anchorY: 0.5
		});
		self.width = self.vehicleGraphics.width;
		self.height = self.vehicleGraphics.height;
		self.lane = 0; // Single lane
		self.x = LANE_POSITIONS[self.lane];
		self.speed = BASE_VEHICLE_SPEED - Math.random() * 2;
		return self;
	};
	self.update = function () {
		self.y += gameSpeed.value - self.speed;
		// Check if the vehicle is off-screen
		if (self.y > 2732 + self.height) {
			self.active = false;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x34495e
});

/**** 
* Game Code
****/ 
// Constants
var BASE_GAME_SPEED = 10;
var BASE_VEHICLE_SPEED = 5;
var LANE_WIDTH = 600;
var LANE_POSITIONS = [2048 / 2]; // Single lane in the center of the game
// Game variables
var player;
var roadSegment;
var vehicles = [];
var collectibles = [];
var gameSpeed = {
	value: BASE_GAME_SPEED
};
var score = 0;
var distance = 0;
var lastVehicleSpawn = 0;
var lastCollectibleSpawn = 0;
var spawnRate = 60; // Frames between vehicle spawns
var collectibleSpawnRate = 180; // Frames between collectible spawns
var difficultyTimer = 0;
var difficultyInterval = 1000; // Increase difficulty every 1000 frames
// Initialize game elements
function initGame() {
	// Set up road
	roadSegment = new RoadSegment();
	roadSegment.init();
	roadSegment.x = 2048 / 2;
	roadSegment.y = 2732 / 2;
	game.addChild(roadSegment);
	// Set up player
	player = new Player();
	player.x = LANE_POSITIONS[0]; // Start in the single center lane
	player.y = 2732 - 300; // Position near the bottom
	game.addChild(player);
	// Reset game state
	vehicles = [];
	collectibles = [];
	gameSpeed.value = BASE_GAME_SPEED;
	score = 0;
	distance = 0;
	lastVehicleSpawn = 0;
	lastCollectibleSpawn = 0;
	difficultyTimer = 0;
	spawnRate = 60;
	collectibleSpawnRate = 180;
	// Start playing background music
	LK.playMusic('highway_bgm');
	// Update score display
	LK.setScore(score);
	updateScoreDisplay();
}
function spawnVehicle() {
	var vehicleTypes = ['car1', 'car2', 'car3', 'truck'];
	var type = vehicleTypes[Math.floor(Math.random() * vehicleTypes.length)];
	var vehicle = new Vehicle();
	vehicle.init(type);
	vehicle.y = -vehicle.height;
	vehicle.active = true;
	vehicles.push(vehicle);
	game.addChild(vehicle);
}
function spawnCollectible() {
	var types = ['coin', 'shield', 'speedBoost'];
	var weights = [0.7, 0.15, 0.15]; // 70% coins, 15% shields, 15% speed boosts
	var rand = Math.random();
	var type;
	if (rand < weights[0]) {
		type = types[0]; // coin
	} else if (rand < weights[0] + weights[1]) {
		type = types[1]; // shield
	} else {
		type = types[2]; // speedBoost
	}
	var collectible = new Collectible();
	collectible.init(type);
	collectible.y = -collectible.height;
	collectible.active = true;
	collectibles.push(collectible);
	game.addChild(collectible);
}
function checkCollisions() {
	// Check vehicle collisions
	for (var i = 0; i < vehicles.length; i++) {
		if (vehicles[i].active && player.intersects(vehicles[i])) {
			if (player.shielded) {
				// Shield protects from collision
				player.shielded = false;
				player.shieldTimer = 0;
				tween(player.shieldVisual, {
					alpha: 0
				}, {
					duration: 300
				});
				// Move the vehicle out of the way
				tween(vehicles[i], {
					x: vehicles[i].x + (Math.random() > 0.5 ? 200 : -200)
				}, {
					duration: 300,
					easing: tween.easeOut
				});
			} else {
				// Collision
				LK.getSound('crash').play();
				// Game over
				if (score > storage.highScore) {
					storage.highScore = score;
				}
				LK.showGameOver();
				return true;
			}
		}
	}
	// Check collectible collisions
	for (var j = 0; j < collectibles.length; j++) {
		if (collectibles[j].active && player.intersects(collectibles[j])) {
			switch (collectibles[j].type) {
				case 'coin':
					score += 10;
					LK.getSound('coin_collect').play();
					break;
				case 'shield':
					player.activateShield();
					LK.getSound('powerup_collect').play();
					break;
				case 'speedBoost':
					player.activateSpeedBoost();
					LK.getSound('powerup_collect').play();
					break;
			}
			collectibles[j].active = false;
			collectibles[j].destroy();
			collectibles.splice(j, 1);
			j--;
			// Update score
			LK.setScore(score);
			updateScoreDisplay();
		}
	}
	return false;
}
function updateScoreDisplay() {
	scoreText.setText("SCORE: " + score + "\nHIGH: " + storage.highScore);
}
function increaseDifficulty() {
	spawnRate = Math.max(30, spawnRate - 1);
	gameSpeed.value = Math.min(BASE_GAME_SPEED * 1.5, gameSpeed.value + 0.1);
}
// Set up UI
var scoreText = new Text2("SCORE: 0\nHIGH: " + storage.highScore, {
	size: 70,
	fill: 0xFFFFFF
});
scoreText.anchor.set(1, 0);
LK.gui.topRight.addChild(scoreText);
// Game controls
var touchStartX = 0;
var touchStartY = 0;
var swipeThreshold = 50;
game.down = function (x, y, obj) {
	touchStartX = x;
	touchStartY = y;
};
game.move = function (x, y, obj) {
	// Implemented in the up handler for better control
};
game.up = function (x, y, obj) {
	// Move player to the x-coordinate of the click
	player.x = x;
};
// Initialize the game
initGame();
// Game update loop
game.update = function () {
	// Update distance/score
	distance += gameSpeed.value / 60;
	score = Math.floor(distance) + Math.floor(score);
	LK.setScore(score);
	// Update objects
	roadSegment.update();
	player.update();
	// Spawn vehicles
	lastVehicleSpawn++;
	if (lastVehicleSpawn >= spawnRate) {
		spawnVehicle();
		lastVehicleSpawn = 0;
	}
	// Spawn collectibles
	lastCollectibleSpawn++;
	if (lastCollectibleSpawn >= collectibleSpawnRate) {
		spawnCollectible();
		lastCollectibleSpawn = 0;
	}
	// Update vehicles
	for (var i = vehicles.length - 1; i >= 0; i--) {
		if (vehicles[i].active) {
			vehicles[i].update();
			// Remove if inactive
			if (!vehicles[i].active) {
				vehicles[i].destroy();
				vehicles.splice(i, 1);
			}
		}
	}
	// Update collectibles
	for (var j = collectibles.length - 1; j >= 0; j--) {
		if (collectibles[j].active) {
			collectibles[j].update();
			// Remove if inactive
			if (!collectibles[j].active) {
				collectibles[j].destroy();
				collectibles.splice(j, 1);
			}
		}
	}
	// Check collisions
	if (checkCollisions()) {
		return; // Game over, stop updating
	}
	// Increase difficulty over time
	difficultyTimer++;
	if (difficultyTimer >= difficultyInterval) {
		increaseDifficulty();
		difficultyTimer = 0;
	}
	// Update the score display periodically
	if (LK.ticks % 10 === 0) {
		updateScoreDisplay();
	}
};

===================================================================
--- original.js
+++ change.js
@@ -32,9 +32,9 @@
 			anchorY: 0.5
 		});
 		self.width = self.collectibleGraphics.width;
 		self.height = self.collectibleGraphics.height;
-		self.lane = Math.floor(Math.random() * LANE_POSITIONS.length); // Random lane based on available lanes
+		self.lane = 0; // Single lane
 		self.x = LANE_POSITIONS[self.lane];
 		// Animation
 		self.collectibleGraphics.rotation = 0;
 		return self;
@@ -74,10 +74,10 @@
 		self.x += deltaX;
 		// Ensure the player doesn't move out of the road boundaries
 		if (self.x < LANE_POSITIONS[0] - LANE_WIDTH / 2) {
 			self.x = LANE_POSITIONS[0] - LANE_WIDTH / 2;
-		} else if (self.x > LANE_POSITIONS[3] + LANE_WIDTH / 2) {
-			self.x = LANE_POSITIONS[3] + LANE_WIDTH / 2;
+		} else if (self.x > LANE_POSITIONS[0] + LANE_WIDTH / 2) {
+			self.x = LANE_POSITIONS[0] + LANE_WIDTH / 2;
 		}
 	};
 	self.activateShield = function () {
 		self.shielded = true;
@@ -132,17 +132,9 @@
 		});
 		self.dividers = [];
 		// Create lane dividers
 		for (var i = 0; i < 20; i++) {
-			for (var j = 0; j < LANE_POSITIONS.length - 1; j++) {
-				var divider = self.attachAsset('laneDivider', {
-					anchorX: 0.5,
-					anchorY: 0.5,
-					x: LANE_POSITIONS[j] + LANE_WIDTH / 2,
-					y: -600 + i * 160
-				});
-				self.dividers.push(divider);
-			}
+			// No lane dividers needed for a single lane
 		}
 		return self;
 	};
 	self.update = function () {
@@ -179,9 +171,9 @@
 			anchorY: 0.5
 		});
 		self.width = self.vehicleGraphics.width;
 		self.height = self.vehicleGraphics.height;
-		self.lane = Math.floor(Math.random() * LANE_POSITIONS.length); // Random lane based on available lanes
+		self.lane = 0; // Single lane
 		self.x = LANE_POSITIONS[self.lane];
 		self.speed = BASE_VEHICLE_SPEED - Math.random() * 2;
 		return self;
 	};
@@ -208,9 +200,9 @@
 // Constants
 var BASE_GAME_SPEED = 10;
 var BASE_VEHICLE_SPEED = 5;
 var LANE_WIDTH = 600;
-var LANE_POSITIONS = [2048 / 2 - 3 * LANE_WIDTH, 2048 / 2 - LANE_WIDTH, 2048 / 2, 2048 / 2 + LANE_WIDTH];
+var LANE_POSITIONS = [2048 / 2]; // Single lane in the center of the game
 // Game variables
 var player;
 var roadSegment;
 var vehicles = [];
@@ -235,9 +227,9 @@
 	roadSegment.y = 2732 / 2;
 	game.addChild(roadSegment);
 	// Set up player
 	player = new Player();
-	player.x = LANE_POSITIONS[2]; // Start in the middle lane
+	player.x = LANE_POSITIONS[0]; // Start in the single center lane
 	player.y = 2732 - 300; // Position near the bottom
 	game.addChild(player);
 	// Reset game state
 	vehicles = [];