Handling player/background movements in 2D games

Posted by lukeluke on Game Development See other posts from Game Development or by lukeluke
Published on 2011-11-28T15:55:30Z Indexed on 2011/11/28 18:55 UTC
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Filed under:

box2d

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movement

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side-scroller

Suppose you have your animated character controlled by the player and a 2D world (like the old 2D side-scrolling games). When the user press right on the keyboard, the background is moved to the right. If the path is always horizontal, this is simple to do (incrementation/decrementation of the x-coordinate).

But suppose that the path is instead a polygonal chain. My questions are:

How do you move the background?
How do you move the background if the game objects are managed with a physics engine like box2D?

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