     
     // Duck Properties
     var duckMode = false
-
-    // Background Movement [Tina]
-    var backgroundSpeed : CGFloat = 1.0
-    var roadSpeed : CGFloat = 5.0
-    var roadSize : CGSize?
     
     // Node Categories [Tuan/Vincent]
     let heroCategory = 0x1 << 1

class GameScene: SKScene, SKPhysicsContactDelegate {

    var hero = SKSpriteNode()

    // Jump Properties [Tuan/Vincent]
    var currentTime = 0.0

            bg.position = CGPoint(x: index * Int(bg.size.width), y: 0)
            bg.name = "background"
            self.addChild(bg)
        }
        
        // Roads [Tina]
