ForceMode on Rigidbody2D

Hello,

I need to apply a Torque impulse on a Rigidbody2D. Unlike Rigidbody, I noticed Rigidbody2D does not contain the overloads on AddForce/AddTorque that accept a ForceMode parameter.

Any ideas on the math behind ForceMode.Impulse and how I might use it to simulate an impulse via AddTorque?

For added reference, my game is a port of an XNA/Farseer Physics (c# port of Box2D) game. My control scheme applies impulses to the character. I use impulses over forces because I find the responsiveness/control of the character much more manageable that way.

http://docs.unity3d.com/Documentation/ScriptReference/Rigidbody.AddTorque.html

http://docs.unity3d.com/Documentation/ScriptReference/Rigidbody2D.AddTorque.html

http://docs.unity3d.com/Documentation/ScriptReference/ForceMode.html

Video from my XNA game I'm porting

Many thanks for your help,
Mike.

 

there is a lot of stuff missing in the new 2D engine , hope they include it on next versions