for i = 0; i<1000; ++i {
        var randomNumber = CGFloat(arc4random_uniform(3000)) * 200
        bubbleDuplicate.position = (CGPointMake(randomNumber, 400))
        bubbleDuplicate = bubble.copy() as! SKSpriteNode
        bubbleDuplicate.physicsBody?.categoryBitMask = bubbleCategory
        bubbleDuplicate.physicsBody?.collisionBitMask = 0
        bubbleDuplicate.physicsBody?.contactTestBitMask = 0

        addChild(bubbleDuplicate)

        func BubbleContact(){
            bubbleDuplicate.removeFromParent()
            bubble.removeFromParent()
            bubbleDuplicate.setScale(0)
            bubble.setScale(0)

        }

    }

func didBeginContact(contact: SKPhysicsContact) {
    let collision:UInt32 = (contact.bodyA.categoryBitMask | contact.bodyB.categoryBitMask)

    if collision == (playerCategory | crateCategory) {

        gameOver()
    }
    if collision == (playerCategory | bubbleCategory) {
        NSLog("Bubble Contact")
        bubbleDuplicate.removeAllActions()
        bubbleDuplicate.removeFromParent()
        bubble.removeAllActions()
        bubble.removeFromParent()
        bubbleDuplicate.setScale(0)
        bubble.setScale(0)
        bubbleDuplicate.alpha = 0
        bubble.removeFromParent()
        bubbleDuplicate.removeFromParent()

               }


}