First game of 20 Games Challenge

Game #1 in my attempt at the 20 game challenge - Flappy Bird clone

I have since looked at code for a couple of other Flappy Bird 20 Challenge games, and see mine differs in:

1. I used a NinePatchRect which I scale to size of the obstacle, as opposed to making a large sprite the is offet to fit screen.
2. Instead of moving every object on screen and keeping bird static, I add a camera that followed ahead of the bird but locked on Y-axis, I felt this was a better approach as it meant I would not have to synchronize movement every time I wanted to expand game adding say pickups, etc, and left door open to effects like camera shake etc

I added a fairly crude bump effect using camera zoom on collision to illustrate why I think the camera method if good.