/**** 
* Classes
****/ 
// Hurdle class
var Hurdle = Container.expand(function () {
	var self = Container.call(this);
	var hurdleGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.0 // Anchor at the top for easier sky alignment
	});
	self.speedY = 5;
	self.move = function () {
		self.y += self.speedY;
	};
	self.isOffScreen = function () {
		return self.y > game.height;
	};
});
// Assets are 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: 1.0 // Anchor at the bottom center for easier ground alignment
	});
	self.speedY = 0;
	self.gravity = 0.5;
	self.jumpPower = -15;
	self.grounded = false;
	self.update = function () {
		// Apply gravity
		if (!self.grounded) {
			self.speedY += self.gravity;
			self.y += self.speedY;
		}
		// Check for ground
		if (self.y >= game.height - playerGraphics.height) {
			self.y = game.height - playerGraphics.height;
			self.grounded = true;
			self.speedY = 0;
		}
	};
	self.jump = function () {
		if (self.grounded) {
			self.speedY = self.jumpPower;
			self.grounded = false;
		}
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB // Light blue background to simulate the sky
});

/**** 
* Game Code
****/ 
var player = game.addChild(new Player());
player.x = 200;
player.y = game.height - 100; // Start position near the bottom of the screen
var obstacles = [];
var spawnObstacleTimer = 0;
var spawnObstacleInterval = 120; // Frames until next obstacle spawns
game.on('down', function (obj) {
	player.jump();
});
LK.on('tick', function () {
	player.update();
	// Handle obstacle movement and cleanup
	for (var i = obstacles.length - 1; i >= 0; i--) {
		obstacles[i].move();
		if (obstacles[i].isOffScreen()) {
			obstacles[i].destroy();
			obstacles.splice(i, 1);
		} else if (player.intersects(obstacles[i])) {
			// Game over logic
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	}
	// Spawn hurdles
	spawnObstacleTimer++;
	if (spawnObstacleTimer >= spawnObstacleInterval) {
		var hurdle = game.addChild(new Hurdle());
		hurdle.x = game.width / 2; // Position at the middle of the screen
		hurdle.y = 0; // Position at the top of the screen
		obstacles.push(hurdle);
		spawnObstacleTimer = 0;
	}
});

===================================================================
--- original.js
+++ change.js
@@ -85,9 +85,9 @@
 	// Spawn hurdles
 	spawnObstacleTimer++;
 	if (spawnObstacleTimer >= spawnObstacleInterval) {
 		var hurdle = game.addChild(new Hurdle());
-		hurdle.x = Math.random() * game.width; // Random position along the width of the screen
+		hurdle.x = game.width / 2; // Position at the middle of the screen
 		hurdle.y = 0; // Position at the top of the screen
 		obstacles.push(hurdle);
 		spawnObstacleTimer = 0;
 	}