/**** 
* Classes
****/ 
// Defense class
var Defense = Container.expand(function () {
	var self = Container.call(this);
	var defenseGraphics = self.attachAsset('defense', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Defense logic goes here
	};
});
// Enemy class
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Enemy logic goes here
	};
});
// Grid class
var Grid = Container.expand(function () {
	var self = Container.call(this);
	self.cells = [];
	for (var i = 0; i < 10; i++) {
		self.cells[i] = [];
		for (var j = 0; j < 10; j++) {
			var cell = self.attachAsset('defense', {
				anchorX: 0.5,
				anchorY: 0.5
			});
			cell.x = i * 100;
			cell.y = j * 100;
			self.cells[i][j] = cell;
		}
	}
	self.update = function () {
		// Grid logic goes here
	};
});
// Assets will be automatically created and loaded by the LK engine
// Tower class
var Tower = Container.expand(function () {
	var self = Container.call(this);
	var towerGraphics = self.attachAsset('tower', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Tower logic goes here
	};
});

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

/**** 
* Game Code
****/ 
// Initialize game variables
var tower = game.addChild(new Tower());
tower.x = 2048 / 2;
tower.y = 2732 / 2;
var enemies = [];
var defenses = [];
var grid = new Grid();
game.addChild(grid);
game.update = function () {
	// Game logic goes here
	// Spawn enemies, update defenses, check for collisions, etc.
};

===================================================================
--- original.js
+++ change.js
@@ -71,8 +71,10 @@
 tower.x = 2048 / 2;
 tower.y = 2732 / 2;
 var enemies = [];
 var defenses = [];
+var grid = new Grid();
+game.addChild(grid);
 game.update = function () {
 	// Game logic goes here
 	// Spawn enemies, update defenses, check for collisions, etc.
 };
\ No newline at end of file