How do I: Swing in the center of the screen?

I have a rope swing game i am working on, and i cannot figure out how to keep the player in the middle of the screen and have the buildings/background create on the speed the player is moving, to create the effect that you are actually moving, Like in a runner or other rope swing games.

Any help would be really appreciated

Here is the Capx if you want to check it out.

usually using the scrollto behaviour and setting the layout to unbounding scrolling would be what you'd want..