         trashCan.size = CGSize(width: 35, height: 40)
         trashCan.physicsBody = SKPhysicsBody(rectangleOfSize: CGSize(width: 35, height: 40))
         trashCan.physicsBody?.dynamic = false
-//        trashCan.physicsBody?.categoryBitMask = UInt32(self.obstacleCategory)
+        //        trashCan.physicsBody?.categoryBitMask = UInt32(self.obstacleCategory)
         trashCan.physicsBody?.contactTestBitMask = UInt32(self.heroCategory) | UInt32(self.obstacleCategory)
         trashCan.physicsBody?.node?.name = "trashCan"
         trashCan.zPosition = 12

import AVFoundation

class GameScene: SKScene, SKPhysicsContactDelegate {

    var hero = SKSpriteNode()
    var road = SKSpriteNode()
    // Factor to set entry X position for hero

        self.scene?.paused = false
        backgroundMusicPlayer.play()
    }
    
    
    func playBackgroundMusic(filename: String) {
        let url = NSBundle.mainBundle().URLForResource(
