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Game Development Discussion Thread
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Jul 10th, 2009

2d Ball representation

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I am using c++/opengl. Can someone help me with a wrapper
for a 2d ball representation. I have one but its not complete.
I need other stuff like momentum and collision response.
Can you help me implement this?

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firstPerson

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Jul 11th, 2009

Re: 2d Ball representation

How about a sphere instead? But keep it on a z = 0 plane to keep it 2D.

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Jul 12th, 2009

Re: 2d Ball representation

well a ball is a sphere and keeping z = 0 will make it a circle.

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Jul 14th, 2009

Re: 2d Ball representation

Read these articles:

http://chrishecker.com/Rigid_Body_Dynamics

You can probably ignore all of the rotational stuff, since a sphere is rotation-invariant.

You can get away with a very, very simple implementation if you're only considering spheres. But the other stuff in the articles is good, anyway.

Last edited by MattEvans; Jul 14th, 2009 at 3:39 am.

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