/**** 
* Classes
****/ 
// Obstacle class
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Add a random number and operator to each obstacle
	var operators = ['+', '-', '*', '/', '^'];
	do {
		self.number = Math.floor(Math.random() * 10);
		self.operator = operators[Math.floor(Math.random() * operators.length)];
	} while (self.operator == '/' && self.number == 0);
	var numberText = new Text2(self.operator + self.number.toString(), {
		size: 100,
		fill: "#ffffff"
	});
	self.addChild(numberText);
	numberText.anchor.set(0.5, 0.5);
	numberText.x = 0;
	numberText.y = 0;
	self.speed = 5;
	self.move = function () {
		self.y += self.speed;
	};
});
// Assets will be automatically created based on usage in the code.
// Player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.moveLeft = function () {
		if (self.x > leftRightSpace + railingWidth) {
			self.x -= railingWidth;
		}
	};
	self.moveRight = function () {
		if (self.x < screenWidth - leftRightSpace - railingWidth) {
			self.x += railingWidth;
		}
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000 // Init game with black background 
});

/**** 
* Game Code
****/ 
var player = game.addChild(new Player());
player.x = 1024; // Center horizontally
player.y = 2500; // Position near the bottom
var obstacles = [];
var score = 10;
var scoreTxt = new Text2(score.toString(), {
	size: 150,
	fill: "#ffffff"
});
LK.gui.top.addChild(scoreTxt);
// Calculate the number of railings that can fit on the screen
var railingWidth = 600; // The width of a railing
var screenWidth = 2048; // The width of the screen
var numRailings = Math.floor(screenWidth / railingWidth);
// Calculate the remaining space
var remainingSpace = screenWidth - numRailings * railingWidth;
// Calculate the space to add on the left and right sides of the screen
var leftRightSpace = remainingSpace / 2;
// Draw lines at the left and right boundaries
var leftLine = LK.getAsset('leftLine', {
	anchorX: 0.5,
	anchorY: 0.0,
	x: leftRightSpace,
	y: 0
});
game.addChild(leftLine);
var rightLine = LK.getAsset('rightLine', {
	anchorX: 0.5,
	anchorY: 0.0,
	x: screenWidth - leftRightSpace,
	y: 0
});
game.addChild(rightLine);
// Create an array to store the possible x positions for the obstacles
var obstaclePositions = [];
for (var i = 0; i < numRailings; i++) {
	obstaclePositions.push(leftRightSpace + i * railingWidth + railingWidth / 2);
}
// Create obstacles at intervals
var obstacleTimer = LK.setInterval(function () {
	// Create an obstacle in each grid simultaneously
	for (var i = 0; i < obstaclePositions.length; i++) {
		var obstacle = new Obstacle();
		obstacle.x = obstaclePositions[i];
		obstacle.y = 0; // Start from the top
		obstacles.push(obstacle);
		game.addChild(obstacle);
	}
}, 2000);
// Handle touch events for moving the player
game.on('down', function (obj) {
	var pos = obj.event.getLocalPosition(game);
	if (pos.x < 1024) {
		player.moveLeft();
	} else {
		player.moveRight();
	}
});
// Update game state every tick
LK.on('tick', function () {
	for (var i = obstacles.length - 1; i >= 0; i--) {
		obstacles[i].move();
		// Check for collision with player and ignore
		if (obstacles[i].intersects(player)) {
			// Do nothing
		}
		// Remove off-screen obstacles
		if (obstacles[i].y > 2732) {
			obstacles[i].destroy();
			obstacles.splice(i, 1);
			scoreTxt.setText(score.toString());
		}
	}
});

===================================================================
--- original.js
+++ change.js
@@ -9,10 +9,12 @@
 		anchorY: 0.5
 	});
 	// Add a random number and operator to each obstacle
 	var operators = ['+', '-', '*', '/', '^'];
-	self.number = Math.floor(Math.random() * 10);
-	self.operator = operators[Math.floor(Math.random() * operators.length)];
+	do {
+		self.number = Math.floor(Math.random() * 10);
+		self.operator = operators[Math.floor(Math.random() * operators.length)];
+	} while (self.operator == '/' && self.number == 0);
 	var numberText = new Text2(self.operator + self.number.toString(), {
 		size: 100,
 		fill: "#ffffff"
 	});
@@ -63,12 +65,9 @@
 var scoreTxt = new Text2(score.toString(), {
 	size: 150,
 	fill: "#ffffff"
 });
-scoreTxt.anchor.set(0.5, 0.5);
-scoreTxt.x = 1024;
-scoreTxt.y = 1366;
-LK.gui.center.addChild(scoreTxt);
+LK.gui.top.addChild(scoreTxt);
 // Calculate the number of railings that can fit on the screen
 var railingWidth = 600; // The width of a railing
 var screenWidth = 2048; // The width of the screen
 var numRailings = Math.floor(screenWidth / railingWidth);