带Box2d的iPhone游戏：如何在玩家周围移动世界

Question

So I have a very basic iPhone game that I am working on, where a ball moves around the screen, with fixtures for walls that the ball can hit.

I want the game to be side-scrolling from right to left, but I can't figure out how to approach this.

I have done a bit of research and it seems that the best approach is to move the world around the player. So my question is, how do I move/slide the wall fixtures consistently to the left to imitate a side-scrolling effect?

Answer 1

Don't move the world. Move the camera. Create a class (camera) that will store its position relative to the world. Using the camera position you can calculate the layer (CCLayer where everything is drawn) position. In the simplest case it will be -cameraPos .