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

/**** 
* Classes
****/ 
var Frog = Container.expand(function () {
	var self = Container.call(this);
	var frogGraphics = self.attachAsset('frog', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.gridSize = 120;
	self.isMoving = false;
	self.targetX = 0;
	self.targetY = 0;
	self.moveTo = function (newX, newY) {
		if (self.isMoving) return;
		// Constrain movement to game boundaries
		newX = Math.max(40, Math.min(2008, newX));
		newY = Math.max(60, Math.min(2672, newY));
		self.targetX = newX;
		self.targetY = newY;
		self.isMoving = true;
		LK.getSound('move').play();
		tween(self, {
			x: self.targetX,
			y: self.targetY
		}, {
			duration: 150,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				self.isMoving = false;
			}
		});
	};
	return self;
});
var Vehicle = Container.expand(function (type, speed) {
	var self = Container.call(this);
	var vehicleGraphics = self.attachAsset(type, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = speed || 3;
	self.type = type;
	self.update = function () {
		self.x += self.speed;
		// Reset position when off screen
		if (self.speed > 0 && self.x > 2200) {
			self.x = -200;
		} else if (self.speed < 0 && self.x < -200) {
			self.x = 2200;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x228B22
});

/**** 
* Game Code
****/ 
var GRID_SIZE = 120;
var NUM_LANES = 8;
var LANE_HEIGHT = 120;
// Game state
var frog = null;
var vehicles = [];
var roads = [];
var safeZones = [];
var gameStarted = false;
var currentLevel = 1;
// Create score display
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Create level display
var levelTxt = new Text2('Level: 1', {
	size: 50,
	fill: 0xFFFFFF
});
levelTxt.anchor.set(1, 0);
levelTxt.y = 80;
LK.gui.topRight.addChild(levelTxt);
// Initialize game elements
function initializeGame() {
	// Clear existing elements
	vehicles = [];
	roads = [];
	safeZones = [];
	// Create safe zones and roads
	for (var i = 0; i < NUM_LANES + 2; i++) {
		var yPos = i * LANE_HEIGHT + 60;
		if (i === 0 || i === NUM_LANES + 1) {
			// Safe zones at top and bottom
			var safeZone = game.addChild(LK.getAsset('safeZone', {
				x: 1024,
				y: yPos,
				anchorX: 0.5,
				anchorY: 0.5
			}));
			safeZones.push(safeZone);
		} else {
			// Road lanes
			var road = game.addChild(LK.getAsset('road', {
				x: 1024,
				y: yPos,
				anchorX: 0.5,
				anchorY: 0.5
			}));
			roads.push(road);
		}
	}
	// Create vehicles for each road lane
	for (var i = 0; i < NUM_LANES; i++) {
		var laneY = (i + 1) * LANE_HEIGHT + 60;
		var vehicleCount = 2 + Math.floor(currentLevel / 3);
		var direction = i % 2 === 0 ? 1 : -1;
		var baseSpeed = (2 + currentLevel * 0.5) * direction;
		for (var j = 0; j < vehicleCount; j++) {
			var vehicleType = Math.random() < 0.7 ? 'car' : 'truck';
			var vehicle = new Vehicle(vehicleType, baseSpeed + Math.random() * 2 - 1);
			vehicle.x = j * (2048 / vehicleCount) + Math.random() * 200;
			vehicle.y = laneY;
			vehicles.push(vehicle);
			game.addChild(vehicle);
		}
	}
	// Create frog
	frog = new Frog();
	frog.x = 1024;
	frog.y = (NUM_LANES + 1) * LANE_HEIGHT + 60; // Start at bottom safe zone
	game.addChild(frog);
	gameStarted = true;
}
// Handle input
game.down = function (x, y, obj) {
	if (!gameStarted || frog.isMoving) return;
	var frogGridX = Math.round(frog.x / GRID_SIZE);
	var frogGridY = Math.round(frog.y / LANE_HEIGHT);
	var touchGridX = Math.round(x / GRID_SIZE);
	var touchGridY = Math.round(y / LANE_HEIGHT);
	var deltaX = touchGridX - frogGridX;
	var deltaY = touchGridY - frogGridY;
	// Determine movement direction
	var newX = frog.x;
	var newY = frog.y;
	if (Math.abs(deltaX) > Math.abs(deltaY)) {
		// Horizontal movement
		if (deltaX > 0) {
			newX = frog.x + GRID_SIZE;
		} else {
			newX = frog.x - GRID_SIZE;
		}
	} else {
		// Vertical movement
		if (deltaY < 0) {
			newY = frog.y - LANE_HEIGHT;
		} else {
			newY = frog.y + LANE_HEIGHT;
		}
	}
	frog.moveTo(newX, newY);
};
// Check collisions and game state
function checkCollisions() {
	if (!frog || frog.isMoving) return;
	// Check vehicle collisions
	for (var i = 0; i < vehicles.length; i++) {
		var vehicle = vehicles[i];
		if (frog.intersects(vehicle)) {
			// Game over
			LK.getSound('crash').play();
			LK.effects.flashScreen(0xFF0000, 1000);
			LK.showGameOver();
			return;
		}
	}
	// Check if frog reached top safe zone
	if (frog.y <= 180) {
		// Success!
		LK.setScore(LK.getScore() + 100 * currentLevel);
		scoreTxt.setText('Score: ' + LK.getScore());
		LK.getSound('success').play();
		// Level up every 5 successful crossings
		if (LK.getScore() % 500 === 0) {
			currentLevel++;
			levelTxt.setText('Level: ' + currentLevel);
		}
		// Reset frog position
		frog.x = 1024;
		frog.y = (NUM_LANES + 1) * LANE_HEIGHT + 60;
		// Flash green for success
		LK.effects.flashObject(frog, 0x00FF00, 500);
		// Reinitialize with increased difficulty
		LK.setTimeout(function () {
			// Clear old vehicles
			for (var i = 0; i < vehicles.length; i++) {
				vehicles[i].destroy();
			}
			initializeGame();
		}, 500);
	}
}
// Main game loop
game.update = function () {
	if (!gameStarted) return;
	// Update vehicles
	for (var i = 0; i < vehicles.length; i++) {
		vehicles[i].update();
	}
	checkCollisions();
};
// Initialize the game
initializeGame();

===================================================================
--- original.js
+++ change.js
@@ -203,9 +203,9 @@
 		frog.y = (NUM_LANES + 1) * LANE_HEIGHT + 60;
 		// Flash green for success
 		LK.effects.flashObject(frog, 0x00FF00, 500);
 		// Reinitialize with increased difficulty
-		setTimeout(function () {
+		LK.setTimeout(function () {
 			// Clear old vehicles
 			for (var i = 0; i < vehicles.length; i++) {
 				vehicles[i].destroy();
 			}