This repository has been archived by the owner. It is now read-only.
An OpenGL clock using the game of Pong. Ported directly from an HTML5 + JS version.
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Type Name Latest commit message Commit time
Failed to load latest commit information.

Pong Clock


This is a clock that uses the game of Pong to tell the time.

It was originally a HTML5 + JS version by The Silvervest Group Labs (see

I've ported to Chicken Scheme + GLUT/OpenGL (

To run it, you'll need Chicken Scheme, with a couple of Eggs (chicken-install gl and glut).

Then, cd to this folder, and run (this is what I used, ymmv): csc clock.scm -LGLU

Now you can do ./clock (or ./clock -s for screensaver mode) and see it in all its beauty :)


  • Use a proper font
  • Sounds?