pygame is
Simple DirectMedia Layer is
Site Swing
Circles of Influence

Circles of Influence - 3.0.0

Ian Mallett (geometrian)



I was bored one evening, and after a few semi-related discussions on irc, I decided to make this.

What you do is move the cursor around (the blue bubble will follow you) and it will distort along with the other bubbles in a nice fair way.

The screenshot can't really show how this works effectively; it should be tried to be appreciated.

Naturally, such a simulation can take a great deal of calculation, so Psyco is optional. Also, certain parameters can be tweaked to make more collision (and cooler effects) but it runs more slowly.


Home Page:
Source: of


click to view original size


Circles of Influence - 4.0.0 - Feb 13, 2009
Circles of Influence - 3.0.0 - Sep 7, 2008 account Comments

If you wish to leave a comment with your account, please sign in first.

February 24, 2009 5:10pm - Clayton G. Hobbs - nickname: (ratfink) - 4/5
I just tried it, and it looks really cool! It has a few oddities where the red circle sometimes jumps a tiny bit for about one frame. Don't know how that could be fixed, but I just thought I'd let you know.
February 16, 2009 11:08am - Daesung Park - nickname: (grayger)
February 13, 2009 4:22pm - Ian Mallett - nickname: (geometrian)
Version 4.0.0 released!
September 13, 2008 6:47pm - Ian Mallett - nickname: (geometrian)
Hey, thanks all! Cool tip effeemme! I just which it worked for 3D too...
September 13, 2008 4:50pm - Francesco Mastellone - nickname: (effeemme) - 5/5
Hella cool. Just a tip: instead of declaring a Pythag2D function, from math import hypot ;)
September 9, 2008 2:55pm - Marcel Rodrigues - nickname: (marcel) - 5/5
I like it!
September 7, 2008 12:51pm - Jeffrey Aylesworth - nickname: (jeffayle) - 5/5
September 7, 2008 1:18am - Jordan Trudgett - nickname: (tgfcoder)
Wow, intense. :)
September 7, 2008 12:25am - Ian Mallett - nickname: (geometrian)
Version 3.0.0 released! (Versions 1.0.0-2.0.0 were pre-release work).

our projects welcomes all python game, art, music, sound, video and multimedia projects. If they use pygame or not.
recent releases
Oct 1, 2015

Sep 11, 2015

Sep 6, 2015

Aug 26, 2015

Aug 25, 2015

Aug 21, 2015

Aug 16, 2015

Jul 30, 2015

Jun 24, 2015

... more!
for pygame related questions, comments, and suggestions, please see help (lists, irc)