Android : Android game - How move my scene vertically ? Flappybird-like game

I'm currently programming an android game, a flappy bird like but in Vertical. I mean I have an object ( a burger in my background story ) which start from the top of my screen , and he's dropping to the bottom. I would like to add obstacles . First I don't really how to paint them but it's the question, how can my scene or my camera move to appear new obstacle ?

I guess I need a scene or something like that. Actually I have a class GameScene which has a urger and a list of Obstacles.

I don't add code because I want to discuss about the concept, not only the code. But if you need it, I will.

thanks

( and sorry for my english )