[racket] Doing collision detection in universe.ss

From: Jens Axel Søgaard (jensaxel at soegaard.net)
Date: Wed Nov 28 08:53:24 EST 2012

2012/11/28 Hendrik Boom <hendrik at topoi.pooq.com>:

> There are two arts to collision detection: figuring out whether two
> images collide (which gets trickier when they're in motion) and
> organising all your objects so you don't have to test very many
> combinations of them.

Back in the summer holiday I played with 2d-range trees for the latter purpose.
I combined it with a partial port of chipmunk.

The code with a very small example is here:

The code isn't done. Writing code for the math library turned out to be
more interesting.

Jens Axel Søgaard

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