Static/Dynamic friction in Physics2D Material?

Questions & Answers
1

Hi. I’m trying to accurately simulate high-school level physics in a 2D environment for an educational physics game.

The thing is, unlike the case in 3D, 2D physics materials don’t have separate parameters for static and dynamic friction. Am I missing something, and it’s going to work fine? Or do I need to code it myself?

Also, how is the coefficient of friction calculated, using the friction parameter for both interacting materials? I want to let the players change it according to their own calculations.

Thank you!

2

Unity uses Box2D so you can always look-up this kind information if you search for information on Box2D.

You can look-up friction on the Box2D manual:
http://www.box2d.org/manual.html

Here’s the relevant friction ‘mixing’ code:
https://code.google.com/p/box2d/source/browse/trunk/Box2D/Box2D/Dynamics/Contacts/b2Contact.h