override func update(currentTime: NSTimeInterval) {
    if self.camera != nil {
        self.camera!.position = CGPointMake(CGRectGetMidX(super.frame) / 10, wayPoints.last!.y)
        self.centerOnNode(self.camera!)
    }
}

func centerOnNode(node: SKNode) {
    let cameraPositionInScene: CGPoint = node.scene!.convertPoint(node.position, fromNode: node.parent!)
    node.parent!.position = CGPoint(x:node.parent!.position.x - cameraPositionInScene.x, y:node.parent!.position.y - cameraPositionInScene.y)
}

NSTimer.scheduledTimerWithTimeInterval(0.05, target: self, selector: "addPoint", userInfo: nil, repeats: true)

camera?.position = player!.position
camera?.physicsBody?.velocity = player!.physicsBody!.velocity