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

/**** 
* Classes
****/ 
// Coin
var Coin = Container.expand(function () {
	var self = Container.call(this);
	var coinAsset = self.attachAsset('coin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0; // Will be set on spawn
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
// Obstacle Car
var ObstacleCar = Container.expand(function () {
	var self = Container.call(this);
	var obsAsset = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0; // Will be set on spawn
	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
	});
	// For collision, use the container itself
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x222222
});

/**** 
* Game Code
****/ 
// Road config
// Car (player)
// Obstacle (enemy car)
// Coin
// Road lane
var ROAD_WIDTH = 900;
var ROAD_X = (2048 - ROAD_WIDTH) / 2;
var ROAD_Y = 0;
var ROAD_HEIGHT = 2732;
// Lane config
var LANE_COUNT = 3;
var LANE_WIDTH = ROAD_WIDTH / LANE_COUNT;
// Player config
var PLAYER_START_LANE = 1; // 0 = left, 1 = center, 2 = right
var PLAYER_Y = 2732 - 400;
// Obstacle config
var OBSTACLE_MIN_INTERVAL = 60; // frames
var OBSTACLE_MAX_INTERVAL = 120; // frames
// Coin config
var COIN_MIN_INTERVAL = 80;
var COIN_MAX_INTERVAL = 160;
// Speed config
var BASE_SPEED = 16;
var SPEED_INCREMENT = 0.015; // per tick
var MAX_SPEED = 38;
// Game state
var playerCar;
var obstacles = [];
var coins = [];
var dragNode = null;
var dragOffsetX = 0;
var lastObstacleTick = 0;
var nextObstacleInterval = 90;
var lastCoinTick = 0;
var nextCoinInterval = 120;
var currentSpeed = BASE_SPEED;
var ticksSurvived = 0;
// Draw left grass
var leftGrass = LK.getAsset('lane', {
	width: ROAD_X,
	height: ROAD_HEIGHT,
	color: 0x2ecc40,
	// green
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0
});
game.addChild(leftGrass);
// Draw right grass
var rightGrass = LK.getAsset('lane', {
	width: ROAD_X,
	height: ROAD_HEIGHT,
	color: 0x2ecc40,
	// green
	anchorX: 0,
	anchorY: 0,
	x: ROAD_X + ROAD_WIDTH,
	y: 0
});
game.addChild(rightGrass);
// Draw road background (just a gray rectangle)
var roadBg = LK.getAsset('lane', {
	width: ROAD_WIDTH,
	height: ROAD_HEIGHT,
	color: 0x444444,
	anchorX: 0,
	anchorY: 0,
	x: ROAD_X,
	y: ROAD_Y
});
game.addChild(roadBg);
// Draw lane markers
var laneMarkers = [];
for (var i = 1; i < LANE_COUNT; i++) {
	var marker = LK.getAsset('lane', {
		width: 40,
		height: ROAD_HEIGHT,
		color: 0xffffff,
		anchorX: 0.5,
		anchorY: 0,
		x: ROAD_X + i * LANE_WIDTH,
		y: ROAD_Y
	});
	marker.alpha = 0.18;
	game.addChild(marker);
	laneMarkers.push(marker);
}
// Score text
var scoreTxt = new Text2('0', {
	size: 120,
	fill: "#fff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Place player car
playerCar = new PlayerCar();
playerCar.x = ROAD_X + (PLAYER_START_LANE + 0.5) * LANE_WIDTH;
playerCar.y = PLAYER_Y;
game.addChild(playerCar);
// Helper: Clamp x to road
function clampToRoad(x) {
	var minX = ROAD_X + playerCar.width / 2;
	var maxX = ROAD_X + ROAD_WIDTH - playerCar.width / 2;
	if (x < minX) return minX;
	if (x > maxX) return maxX;
	return x;
}
// Touch/drag controls
game.down = function (x, y, obj) {
	// Only start drag if touch is on car
	var local = playerCar.toLocal(game.toGlobal({
		x: x,
		y: y
	}));
	if (local.x >= -playerCar.width / 2 && local.x <= playerCar.width / 2 && local.y >= -playerCar.height / 2 && local.y <= playerCar.height / 2) {
		dragNode = playerCar;
		dragOffsetX = playerCar.x - x;
	}
};
game.move = function (x, y, obj) {
	if (dragNode) {
		// Only allow horizontal movement, clamp to road
		dragNode.x = clampToRoad(x + dragOffsetX);
	}
};
game.up = function (x, y, obj) {
	dragNode = null;
};
// Spawn obstacle
function spawnObstacle() {
	var lane = Math.floor(Math.random() * LANE_COUNT);
	var obs = new ObstacleCar();
	obs.x = ROAD_X + (lane + 0.5) * LANE_WIDTH;
	obs.y = -obs.height / 2;
	obs.speed = currentSpeed;
	obstacles.push(obs);
	game.addChild(obs);
}
// Spawn coin
function spawnCoin() {
	var lane = Math.floor(Math.random() * LANE_COUNT);
	var coin = new Coin();
	coin.x = ROAD_X + (lane + 0.5) * LANE_WIDTH;
	coin.y = -coin.height / 2 - 100;
	coin.speed = currentSpeed;
	coins.push(coin);
	game.addChild(coin);
}
// Main game update
game.update = function () {
	ticksSurvived++;
	// Increase speed over time
	if (currentSpeed < MAX_SPEED) {
		currentSpeed += SPEED_INCREMENT;
	}
	// Update obstacles
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obs = obstacles[i];
		obs.speed = currentSpeed;
		obs.update();
		// Remove if off screen
		if (obs.y - obs.height / 2 > 2732) {
			obs.destroy();
			obstacles.splice(i, 1);
			continue;
		}
		// Collision with player
		if (obs.intersects(playerCar)) {
			LK.effects.flashScreen(0xff0000, 800);
			LK.showGameOver();
			return;
		}
	}
	// Update coins
	for (var j = coins.length - 1; j >= 0; j--) {
		var coin = coins[j];
		coin.speed = currentSpeed;
		coin.update();
		// Remove if off screen
		if (coin.y - coin.height / 2 > 2732) {
			coin.destroy();
			coins.splice(j, 1);
			continue;
		}
		// Collect coin
		if (coin.intersects(playerCar)) {
			LK.setScore(LK.getScore() + 1);
			scoreTxt.setText(LK.getScore());
			// Animate coin
			tween(coin, {
				scaleX: 1.5,
				scaleY: 1.5,
				alpha: 0
			}, {
				duration: 200,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					coin.destroy();
				}
			});
			coins.splice(j, 1);
			continue;
		}
	}
	// Spawn obstacles
	if (LK.ticks - lastObstacleTick >= nextObstacleInterval) {
		spawnObstacle();
		lastObstacleTick = LK.ticks;
		nextObstacleInterval = OBSTACLE_MIN_INTERVAL + Math.floor(Math.random() * (OBSTACLE_MAX_INTERVAL - OBSTACLE_MIN_INTERVAL));
	}
	// Spawn coins
	if (LK.ticks - lastCoinTick >= nextCoinInterval) {
		spawnCoin();
		lastCoinTick = LK.ticks;
		nextCoinInterval = COIN_MIN_INTERVAL + Math.floor(Math.random() * (COIN_MAX_INTERVAL - COIN_MIN_INTERVAL));
	}
};
// Set initial score
LK.setScore(0);
scoreTxt.setText('0');

===================================================================
--- original.js
+++ change.js
@@ -52,13 +52,13 @@
 
 /**** 
 * Game Code
 ****/ 
-// Road lane
-// Coin
-// Obstacle (enemy car)
-// Car (player)
 // Road config
+// Car (player)
+// Obstacle (enemy car)
+// Coin
+// Road lane
 var ROAD_WIDTH = 900;
 var ROAD_X = (2048 - ROAD_WIDTH) / 2;
 var ROAD_Y = 0;
 var ROAD_HEIGHT = 2732;
@@ -89,8 +89,32 @@
 var lastCoinTick = 0;
 var nextCoinInterval = 120;
 var currentSpeed = BASE_SPEED;
 var ticksSurvived = 0;
+// Draw left grass
+var leftGrass = LK.getAsset('lane', {
+	width: ROAD_X,
+	height: ROAD_HEIGHT,
+	color: 0x2ecc40,
+	// green
+	anchorX: 0,
+	anchorY: 0,
+	x: 0,
+	y: 0
+});
+game.addChild(leftGrass);
+// Draw right grass
+var rightGrass = LK.getAsset('lane', {
+	width: ROAD_X,
+	height: ROAD_HEIGHT,
+	color: 0x2ecc40,
+	// green
+	anchorX: 0,
+	anchorY: 0,
+	x: ROAD_X + ROAD_WIDTH,
+	y: 0
+});
+game.addChild(rightGrass);
 // Draw road background (just a gray rectangle)
 var roadBg = LK.getAsset('lane', {
 	width: ROAD_WIDTH,
 	height: ROAD_HEIGHT,