===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,262 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Enemy Car Class
+var EnemyCar = Container.expand(function () {
+	var self = Container.call(this);
+	var car = self.attachAsset('enemyCar', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.lane = 1;
+	self.speed = 18;
+	self.update = function () {
+		self.y += self.speed * gameSpeed;
+	};
+	return self;
+});
+// Lane Divider Class
+var LaneDivider = Container.expand(function () {
+	var self = Container.call(this);
+	var div = self.attachAsset('laneDivider', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 18;
+	self.update = function () {
+		self.y += self.speed * gameSpeed;
+	};
+	return self;
+});
+// Obstacle Class
+var Obstacle = Container.expand(function () {
+	var self = Container.call(this);
+	var obs = self.attachAsset('obstacle', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.lane = 1;
+	self.speed = 18;
+	self.update = function () {
+		self.y += self.speed * gameSpeed;
+	};
+	return self;
+});
+// Player Car Class
+var PlayerCar = Container.expand(function () {
+	var self = Container.call(this);
+	var car = self.attachAsset('playerCar', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.lane = 1; // 0: left, 1: center, 2: right
+	self.setLane = function (laneIdx) {
+		self.lane = laneIdx;
+		// Animate to new lane position
+		var targetX = lanes[self.lane];
+		tween(self, {
+			x: targetX
+		}, {
+			duration: 120,
+			easing: tween.cubicOut
+		});
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x222222
+});
+
+/**** 
+* Game Code
+****/ 
+// Music (background)
+// Sound for lane change
+// Sound for crash
+// Road lane divider
+// Obstacle (barrier)
+// Enemy car
+// Car (player)
+// Lane positions (3 lanes)
+var laneCount = 3;
+var laneWidth = 410;
+var lanes = [2048 / 2 - laneWidth,
+// left
+2048 / 2,
+// center
+2048 / 2 + laneWidth // right
+];
+// Game variables
+var playerCar;
+var enemyCars = [];
+var obstacles = [];
+var laneDividers = [];
+var score = 0;
+var scoreTxt;
+var gameSpeed = 1;
+var ticksSinceStart = 0;
+var swipeStartX = null;
+var swipeStartY = null;
+var swipeActive = false;
+var lastLane = 1;
+var spawnTick = 0;
+var dividerSpacing = 320;
+var dragNode = null;
+// Score display
+scoreTxt = new Text2('0', {
+	size: 120,
+	fill: "#fff"
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Start music
+LK.playMusic('bgmusic');
+// Create player car
+playerCar = new PlayerCar();
+playerCar.x = lanes[1];
+playerCar.y = 2732 - 500;
+playerCar.setLane(1);
+game.addChild(playerCar);
+// Create lane dividers
+for (var l = 1; l < laneCount; l++) {
+	for (var i = 0; i < 10; i++) {
+		var divider = new LaneDivider();
+		divider.x = 2048 / 2 - laneWidth / 2 + laneWidth * l;
+		divider.y = i * dividerSpacing;
+		laneDividers.push(divider);
+		game.addChild(divider);
+	}
+}
+// Helper: spawn enemy car or obstacle
+function spawnObstacleOrEnemy() {
+	// Randomly decide: 70% enemy car, 30% obstacle
+	var isEnemy = Math.random() < 0.7;
+	var laneIdx = Math.floor(Math.random() * laneCount);
+	var y = -300;
+	if (isEnemy) {
+		var enemy = new EnemyCar();
+		enemy.lane = laneIdx;
+		enemy.x = lanes[laneIdx];
+		enemy.y = y;
+		enemyCars.push(enemy);
+		game.addChild(enemy);
+	} else {
+		var obs = new Obstacle();
+		obs.lane = laneIdx;
+		obs.x = lanes[laneIdx];
+		obs.y = y;
+		obstacles.push(obs);
+		game.addChild(obs);
+	}
+}
+// Helper: update score
+function updateScore(val) {
+	score = val;
+	scoreTxt.setText(score);
+}
+// Touch/drag/swipe handling
+game.down = function (x, y, obj) {
+	swipeStartX = x;
+	swipeStartY = y;
+	swipeActive = true;
+	dragNode = playerCar;
+};
+game.move = function (x, y, obj) {
+	// Only handle swipe if active
+	if (!swipeActive) return;
+	if (!dragNode) return;
+	var dx = x - swipeStartX;
+	var dy = y - swipeStartY;
+	// Only consider horizontal swipes, ignore vertical
+	if (Math.abs(dx) > 80 && Math.abs(dx) > Math.abs(dy)) {
+		var newLane = playerCar.lane;
+		if (dx < 0 && playerCar.lane > 0) {
+			newLane = playerCar.lane - 1;
+		} else if (dx > 0 && playerCar.lane < laneCount - 1) {
+			newLane = playerCar.lane + 1;
+		}
+		if (newLane !== playerCar.lane) {
+			playerCar.setLane(newLane);
+			LK.getSound('swipe').play();
+			swipeActive = false;
+			dragNode = null;
+		}
+	}
+};
+game.up = function (x, y, obj) {
+	swipeActive = false;
+	dragNode = null;
+};
+// Main game update loop
+game.update = function () {
+	ticksSinceStart++;
+	// Gradually increase game speed
+	if (ticksSinceStart % 120 === 0 && gameSpeed < 2.5) {
+		gameSpeed += 0.05;
+	}
+	// Move lane dividers, loop to top
+	for (var i = 0; i < laneDividers.length; i++) {
+		var div = laneDividers[i];
+		div.update();
+		if (div.y > 2732 + 60) {
+			div.y -= dividerSpacing * 10;
+		}
+	}
+	// Spawn enemies/obstacles every 40-60 ticks, randomize
+	spawnTick++;
+	var spawnInterval = 40 + Math.floor(Math.random() * 20);
+	if (spawnTick > spawnInterval) {
+		spawnObstacleOrEnemy();
+		spawnTick = 0;
+	}
+	// Update enemy cars
+	for (var i = enemyCars.length - 1; i >= 0; i--) {
+		var enemy = enemyCars[i];
+		enemy.update();
+		// Off screen
+		if (enemy.y > 2732 + 300) {
+			enemy.destroy();
+			enemyCars.splice(i, 1);
+			updateScore(score + 1);
+			continue;
+		}
+		// Collision with player
+		if (enemy.intersects(playerCar)) {
+			LK.getSound('crash').play();
+			LK.effects.flashScreen(0xff0000, 800);
+			LK.showGameOver();
+			return;
+		}
+	}
+	// Update obstacles
+	for (var j = obstacles.length - 1; j >= 0; j--) {
+		var obs = obstacles[j];
+		obs.update();
+		// Off screen
+		if (obs.y > 2732 + 200) {
+			obs.destroy();
+			obstacles.splice(j, 1);
+			updateScore(score + 1);
+			continue;
+		}
+		// Collision with player
+		if (obs.intersects(playerCar)) {
+			LK.getSound('crash').play();
+			LK.effects.flashScreen(0xff0000, 800);
+			LK.showGameOver();
+			return;
+		}
+	}
+};
+// Center score text at top, avoid top left 100x100
+scoreTxt.x = LK.gui.top.width / 2;
+scoreTxt.y = 40;
\ No newline at end of file