Hello everyone again

It's been a long time since last post, isn'it?
Anyway, this time it is me to need support. I'm building a physical engine on RMXP to implement:
>gravity force,
>generic radial force fields,
>object collisions.
>static/dynamic friction
The first three points are successfully working, while the fouth... well, I've not a precise idea on how to script it.
I know this is a difficult question and if it remains unanswered... well, no problems at all:)
Thanks in advance,
Jens
This post has been edited by Jens of Zanicuud: May 1 2012, 06:09 AM