===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,341 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Obstacle
+var Obstacle = Container.expand(function () {
+	var self = Container.call(this);
+	var obsAsset = self.attachAsset('obstacle', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.width = obsAsset.width;
+	self.height = obsAsset.height;
+	self.speed = 0;
+	self.lane = 1;
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+// Player Car
+var PlayerCar = Container.expand(function () {
+	var self = Container.call(this);
+	var carAsset = self.attachAsset('car', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.width = carAsset.width;
+	self.height = carAsset.height;
+	self.lane = 1; // 0: left, 1: center, 2: right
+	self.invincible = false;
+	self.invincibleTimer = 0;
+	// Flash effect for invincibility
+	self.setInvincible = function (duration) {
+		self.invincible = true;
+		self.invincibleTimer = LK.ticks + Math.floor(duration * 60 / 1000);
+		tween(self, {
+			alpha: 0.5
+		}, {
+			duration: 100,
+			easing: tween.linear,
+			onFinish: function onFinish() {
+				tween(self, {
+					alpha: 1
+				}, {
+					duration: 100,
+					easing: tween.linear
+				});
+			}
+		});
+	};
+	self.update = function () {
+		if (self.invincible && LK.ticks > self.invincibleTimer) {
+			self.invincible = false;
+			self.alpha = 1;
+		}
+	};
+	return self;
+});
+// PowerUp
+var PowerUp = Container.expand(function () {
+	var self = Container.call(this);
+	var puAsset = self.attachAsset('powerup', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.width = puAsset.width;
+	self.height = puAsset.height;
+	self.speed = 0;
+	self.lane = 1;
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+// Rival Car
+var RivalCar = Container.expand(function () {
+	var self = Container.call(this);
+	var rivalAsset = self.attachAsset('rival', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.width = rivalAsset.width;
+	self.height = rivalAsset.height;
+	self.speed = 0;
+	self.lane = 1;
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x222222
+});
+
+/**** 
+* Game Code
+****/ 
+// Road lane
+// Power-up (star)
+// Obstacle (barrier)
+// Rival car
+// Car (player)
+// Lane positions (3 lanes)
+var laneCount = 3;
+var laneWidth = 400;
+var laneX = [2048 / 2 - laneWidth,
+// left
+2048 / 2,
+// center
+2048 / 2 + laneWidth // right
+];
+// Draw road lanes (visual only)
+for (var i = 0; i < laneCount + 1; i++) {
+	var laneLine = LK.getAsset('lane', {
+		anchorX: 0.5,
+		anchorY: 0,
+		x: 2048 / 2 - laneWidth * 1.5 + i * laneWidth,
+		y: 0,
+		scaleY: 7
+	});
+	laneLine.alpha = 0.2;
+	game.addChild(laneLine);
+}
+// Player car
+var player = new PlayerCar();
+player.x = laneX[1];
+player.y = 2732 - 400;
+player.lane = 1;
+game.addChild(player);
+// Score
+var score = 0;
+var scoreTxt = new Text2('0', {
+	size: 120,
+	fill: "#fff"
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Power-up timer text
+var powerupTxt = new Text2('', {
+	size: 70,
+	fill: 0xFFE082
+});
+powerupTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(powerupTxt);
+powerupTxt.y = 130;
+// Game state
+var rivals = [];
+var obstacles = [];
+var powerups = [];
+var gameSpeed = 18; // pixels per frame
+var spawnTimer = 0;
+var powerupActive = false;
+var powerupEndTick = 0;
+var dragNode = null;
+var lastTouchX = 0;
+// Helper: Clamp lane
+function clampLane(lane) {
+	if (lane < 0) return 0;
+	if (lane > laneCount - 1) return laneCount - 1;
+	return lane;
+}
+// Helper: Move player to x
+function movePlayerToX(x) {
+	// Find closest lane
+	var minDist = 99999;
+	var bestLane = 1;
+	for (var i = 0; i < laneCount; i++) {
+		var dist = Math.abs(x - laneX[i]);
+		if (dist < minDist) {
+			minDist = dist;
+			bestLane = i;
+		}
+	}
+	player.lane = bestLane;
+	// Tween to lane center
+	tween.stop(player, {
+		x: true
+	});
+	tween(player, {
+		x: laneX[bestLane]
+	}, {
+		duration: 120,
+		easing: tween.cubicOut
+	});
+}
+// Touch/drag controls
+game.down = function (x, y, obj) {
+	// Only allow drag if touch is on player car or below it
+	if (y >= player.y - player.height / 2 && y <= player.y + player.height / 2) {
+		dragNode = player;
+		lastTouchX = x;
+	}
+};
+game.move = function (x, y, obj) {
+	if (dragNode === player) {
+		// Move car horizontally, snap to nearest lane
+		movePlayerToX(x);
+		lastTouchX = x;
+	}
+};
+game.up = function (x, y, obj) {
+	dragNode = null;
+};
+// Spawning logic
+function spawnRival() {
+	var rival = new RivalCar();
+	rival.lane = Math.floor(Math.random() * laneCount);
+	rival.x = laneX[rival.lane];
+	rival.y = -rival.height;
+	rival.speed = gameSpeed + Math.random() * 4;
+	rivals.push(rival);
+	game.addChild(rival);
+}
+function spawnObstacle() {
+	var obs = new Obstacle();
+	obs.lane = Math.floor(Math.random() * laneCount);
+	obs.x = laneX[obs.lane];
+	obs.y = -obs.height;
+	obs.speed = gameSpeed;
+	obstacles.push(obs);
+	game.addChild(obs);
+}
+function spawnPowerUp() {
+	var pu = new PowerUp();
+	pu.lane = Math.floor(Math.random() * laneCount);
+	pu.x = laneX[pu.lane];
+	pu.y = -pu.height;
+	pu.speed = gameSpeed;
+	powerups.push(pu);
+	game.addChild(pu);
+}
+// Main update loop
+game.update = function () {
+	// Increase score over time
+	if (LK.ticks % 6 === 0) {
+		score += 1;
+		scoreTxt.setText(score);
+	}
+	// Power-up timer
+	if (powerupActive) {
+		var ticksLeft = powerupEndTick - LK.ticks;
+		if (ticksLeft > 0) {
+			powerupTxt.setText('Invincible: ' + Math.ceil(ticksLeft / 60) + 's');
+		} else {
+			powerupActive = false;
+			player.invincible = false;
+			player.alpha = 1;
+			powerupTxt.setText('');
+		}
+	}
+	// Player update (invincibility)
+	player.update();
+	// Spawn rivals, obstacles, powerups
+	if (spawnTimer <= 0) {
+		var r = Math.random();
+		if (r < 0.45) {
+			spawnRival();
+		} else if (r < 0.8) {
+			spawnObstacle();
+		} else {
+			spawnPowerUp();
+		}
+		spawnTimer = 36 + Math.floor(Math.random() * 30); // ~0.6s
+	} else {
+		spawnTimer--;
+	}
+	// Update rivals
+	for (var i = rivals.length - 1; i >= 0; i--) {
+		var rival = rivals[i];
+		rival.update();
+		// Remove if off screen
+		if (rival.y > 2732 + rival.height) {
+			rival.destroy();
+			rivals.splice(i, 1);
+			continue;
+		}
+		// Collision with player
+		if (rival.intersects(player)) {
+			if (!player.invincible) {
+				LK.effects.flashScreen(0xff0000, 800);
+				LK.showGameOver();
+				return;
+			} else {
+				// Remove rival
+				rival.destroy();
+				rivals.splice(i, 1);
+				continue;
+			}
+		}
+	}
+	// Update obstacles
+	for (var i = obstacles.length - 1; i >= 0; i--) {
+		var obs = obstacles[i];
+		obs.update();
+		if (obs.y > 2732 + obs.height) {
+			obs.destroy();
+			obstacles.splice(i, 1);
+			continue;
+		}
+		if (obs.intersects(player)) {
+			if (!player.invincible) {
+				LK.effects.flashScreen(0xff0000, 800);
+				LK.showGameOver();
+				return;
+			} else {
+				obs.destroy();
+				obstacles.splice(i, 1);
+				continue;
+			}
+		}
+	}
+	// Update powerups
+	for (var i = powerups.length - 1; i >= 0; i--) {
+		var pu = powerups[i];
+		pu.update();
+		if (pu.y > 2732 + pu.height) {
+			pu.destroy();
+			powerups.splice(i, 1);
+			continue;
+		}
+		if (pu.intersects(player)) {
+			// Activate invincibility for 3 seconds
+			powerupActive = true;
+			powerupEndTick = LK.ticks + 180;
+			player.setInvincible(3000);
+			powerupTxt.setText('Invincible: 3s');
+			pu.destroy();
+			powerups.splice(i, 1);
+			continue;
+		}
+	}
+};
\ No newline at end of file