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    Android OpenGL ES Guru Jacob Roman's Avatar
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    Aug 2004
    Miami Beach, FL

    Rigid Body Collision Detection

    For those of you who are trying to pull off collisions between 2D convex polygons accurately at any convex shape or angle, then have I got something for you. I tried to make it as simple as possible, so figuring it out or converting to another language, or graphics library like DX/OpenGL, shouldn't be a problem.

    It simply uses the Separation Axes Theorem, although most of code came from Chapter 1 of this rigid body 2D physics tutorial (which is in C++):


    It was a pain, but I converted the code into pure VB to make it easy on everyone. Enjoy the code. I too plan to write a massive rigid body physics tutorial (2D and 3D), so keep a lookout.


    Here's another one I uploaded, only this time, the polygons cannot pass through each other thanks to collision response. I modified some of the other functions and added a couple new ones to allow this response to happen.

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