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  1. #1
    Farscience is offline Farscience
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    Sep 2012
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    Question Efficient/fast collision detection system help.

    I know how to do the simple kind of collision detection (making rectangles around my sprites and checking to see if they intersect), but now I'm working on a scrolling game (the kind with tiles). To have any kind of details, I need to generate a couple to generate a couple thousand tiles, but when I loop it, it tests every single tile to see if it collided with my camera entity, to check if it should be drawn. Checking a couple thousand tiles against a couple thousand tiles give me 0.001(my estimate) FPS.

    The problem: Could anybody show me a small example of a more efficient way to check collisions, or maybe an idea to change my strategies?

    Note: I googled it but every page I checked on collision detection told me to do it my way.

    P.S. I didn't post any code, but if you need it, I can.

  2. #2
    KevinWorkman's Avatar
    KevinWorkman is offline Crazy Cat Lady
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    Oct 2010
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    Default Re: Efficient/fast collision detection system help.

    If you have a 2D tile system, I'm going to assume you have something like a 2D array. From there it should be pretty trivial to figure out which indices of the 2D array are on the screen. No real "detection" necessary.
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