     
     private var jumpRecognizer: UISwipeGestureRecognizer!
     private var duckRecognizer: UISwipeGestureRecognizer!
-    
-    private let tileSize = (width: 32, height: 32)
     
     private let grid = SKSpriteNode()
     private var logicEngine: LogicEngine!

    var isMultiplayer = false
    var peers = [MCPeerID]()
    
    // MARK: Overridden methods
    
    override func didMoveToView(view: SKView) {
        initLogicEngine()


class GameScene: SKScene {

    // ==============================================
    // MARK: Properties
    // ==============================================

    private let countdownNode = CountdownNode()
    private var hasGameStarted = false
    
