/**** 
* Classes
****/ 
// Class for the Arena
var Arena = Container.expand(function () {
	var self = Container.call(this);
	self.update = function () {
		// Update logic for Arena
	};
});
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
// Class for a card
var Card = Container.expand(function () {
	var self = Container.call(this);
	var cardGraphics = self.attachAsset('card', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Update logic for card
	};
});
// Class for a tower
var Tower = Container.expand(function () {
	var self = Container.call(this);
	var towerGraphics = self.attachAsset('tower', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Update logic for tower
	};
});
// Class for a troop
var Troop = Container.expand(function () {
	var self = Container.call(this);
	var troopGraphics = self.attachAsset('troop', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Update logic for troop
	};
});

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

/**** 
* Game Code
****/ 
// Initialize arrays for cards, towers, and troops
var cards = [];
var towers = [];
var troops = [];
// Function to handle game updates
game.update = function () {
	// Update all cards
	for (var i = 0; i < cards.length; i++) {
		cards[i].update();
	}
	// Update all towers
	for (var i = 0; i < towers.length; i++) {
		towers[i].update();
	}
	// Update all troops
	for (var i = 0; i < troops.length; i++) {
		troops[i].update();
	}
	// Update the Arena
	arena.update();
};
// Function to handle game start
function startGame() {
	// Initialize game elements
	initializeCards();
	initializeTowers();
	initializeTroops();
}
// Function to initialize cards
function initializeCards() {
	for (var i = 0; i < 5; i++) {
		var card = new Card();
		card.x = 100 + i * 200;
		card.y = 2500;
		cards.push(card);
		game.addChild(card);
	}
}
// Function to initialize towers
function initializeTowers() {
	for (var i = 0; i < 3; i++) {
		var tower = new Tower();
		tower.x = 500 + i * 500;
		tower.y = 2000;
		towers.push(tower);
		game.addChild(tower);
	}
}
// Function to initialize troops
function initializeTroops() {
	for (var i = 0; i < 10; i++) {
		var troop = new Troop();
		troop.x = 100 + i * 200;
		troop.y = 1500;
		troops.push(troop);
		game.addChild(troop);
	}
}
var arena; // Define the arena variable in the global scope
// Function to initialize the Arena
function initializeArena() {
	arena = new Arena();
	arena.x = 0;
	arena.y = 0;
	game.addChild(arena);
	game.children.push(arena);
}
// Start the game
startGame();
// Initialize the Arena
initializeArena();

===================================================================
--- original.js
+++ change.js
@@ -111,11 +111,12 @@
 		troops.push(troop);
 		game.addChild(troop);
 	}
 }
+var arena; // Define the arena variable in the global scope
 // Function to initialize the Arena
 function initializeArena() {
-	var arena = new Arena();
+	arena = new Arena();
 	arena.x = 0;
 	arena.y = 0;
 	game.addChild(arena);
 	game.children.push(arena);