/**** 
* Classes
****/ 
// Ball class
var Ball = Container.expand(function () {
	var self = Container.call(this);
	var ballGraphics = self.attachAsset('ball', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0;
	self.direction = {
		x: 0,
		y: 0
	};
	self.update = function () {
		self.x += self.direction.x * self.speed;
		self.y += self.direction.y * self.speed;
	};
	return self;
});
// Goalkeeper class
var Goalkeeper = Container.expand(function () {
	var self = Container.call(this);
	var keeperGraphics = self.attachAsset('goalkeeper', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.x = 2048 / 2;
	self.update = function () {
		self.y = goalpost.y + goalpost.height / 2 - keeperGraphics.height / 2; // Always at bottom
		self.x += self.speed;
		var leftLimit = goalpost.x - goalpost.width / 2 + keeperGraphics.width / 2;
		var rightLimit = goalpost.x + goalpost.width / 2 - keeperGraphics.width / 2;
		if (self.x > rightLimit || self.x < leftLimit) {
			self.speed *= -1; // Reverse direction
		}
	};
	return self;
});
// Goalpost class
var Goalpost = Container.expand(function () {
	var self = Container.call(this);
	self.attachAsset('goalpost', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.x = 2048 / 2;
	self.y = 200; // Near top of screen
	return self;
});

/**** 
* Initialize Game
****/ 
/**** 
* Game Initialization 
****/ 
var game = new LK.Game({
	backgroundColor: 0x4CAF50
});

/**** 
* Game Code
****/ 
var score = 0;
var missedShots = 0;
var maxMissedShots = 5;
var ball, goalkeeper, goalpost, scoreTxt, missedTxt, gameOverText;
var gameOver = false;
function initGame() {
	ball = game.addChild(new Ball());
	ball.x = 2048 / 2;
	ball.y = 2732 - 200;
	goalpost = game.addChild(new Goalpost());
	goalkeeper = game.addChild(new Goalkeeper());
	scoreTxt = new Text2('Score: 0', {
		size: 100,
		fill: 0xFFFFFF
	});
	scoreTxt.anchor.set(0.5, 0);
	LK.gui.top.addChild(scoreTxt);
	missedTxt = new Text2('Missed: 0', {
		size: 100,
		fill: 0xFFFFFF
	});
	missedTxt.anchor.set(0.5, 0);
	missedTxt.y = 120;
	LK.gui.top.addChild(missedTxt);
	gameOverText = new Text2('Game Over!', {
		size: 150,
		fill: 0xFF0000
	});
	gameOverText.anchor.set(0.5, 0.5);
	gameOverText.x = 2048 / 2;
	gameOverText.y = 2048 / 2;
	gameOverText.visible = false;
	LK.gui.top.addChild(gameOverText);
}
/**** 
* Game Loop 
****/ 
game.update = function () {
	if (gameOver) {
		return;
	}
	if (ball) {
		ball.update();
	}
	if (goalkeeper) {
		goalkeeper.update();
	}
	if (goalpost && checkGoal()) {
		score += 10;
		scoreTxt.setText('Score: ' + score);
		resetBall();
		increaseDifficulty();
		LK.getSound('goal').play();
	} else if (ball && ball.y < 0) {
		missedShots++;
		missedTxt.setText('Missed: ' + missedShots);
		resetBall();
		if (missedShots >= maxMissedShots) {
			triggerGameOver();
		}
	} else if (ball && ball.intersects(goalkeeper)) {
		triggerGameOver();
	}
};
function checkGoal() {
	var goalLeft = goalpost.x - goalpost.width / 2;
	var goalRight = goalpost.x + goalpost.width / 2;
	var goalTop = goalpost.y - goalpost.height / 2;
	var goalBottom = goalpost.y + goalpost.height / 2;
	// Ball is within goal area
	if (ball.x > goalLeft && ball.x < goalRight && ball.y > goalTop && ball.y < goalBottom) {
		// If the ball touches the keeper inside the goal, it's game over
		if (ball.intersects(goalkeeper)) {
			triggerGameOver();
			return false;
		}
		return true; // Valid goal
	}
	return false;
}
/**** 
* Ball Reset and Difficulty Increase 
****/ 
function resetBall() {
	ball.x = 2048 / 2;
	ball.y = 2732 - 200;
	ball.direction = {
		x: 0,
		y: 0
	};
	ball.speed = 0;
}
function increaseDifficulty() {
	// Every 10 points, increase goalkeeper speed
	if (score % 10 === 0) {
		goalkeeper.speed = getGoalkeeperSpeed(score);
	}
}
function getGoalkeeperSpeed(score) {
	var baseSpeed = 5;
	var speedIncrement = 2; // Every 10 points adds 2 to speed
	return baseSpeed + Math.floor(score / 10) * speedIncrement;
}
/**** 
* Game Over Handling 
****/ 
function triggerGameOver() {
	gameOver = true;
	gameOverText.visible = true;
	LK.showGameOver(); // FRVR standard game over screen
}
/**** 
* User Interaction (Ball Kick) 
****/ 

===================================================================
--- original.js
+++ change.js
@@ -110,9 +110,9 @@
 	}
 	if (goalkeeper) {
 		goalkeeper.update();
 	}
-	if (checkGoal()) {
+	if (goalpost && checkGoal()) {
 		score += 10;
 		scoreTxt.setText('Score: ' + score);
 		resetBall();
 		increaseDifficulty();