         let mySize = background.size
         println("Size: \(mySize)")
         
+        zombie.zPosition = 100
         zombie.position = CGPoint(x: 400, y: 400)
         addChild(zombie)
         

    
    
    
}

    var lastUpdateTime: NSTimeInterval = 0
    var dt: NSTimeInterval = 0
    let zombieMovePointsPerSec: CGFloat = 480.0
    let catMovePointsPerSec:CGFloat = 480.0

    var velocity = CGPointZero
    let playableRect: CGRect
    var lastTouchLocation: CGPoint?
