how to prevent rotation when collision occurs?

[ghost]

Will.. it may be a dummy question, but I am a newbie of this awesome engine.

But I can not find api for this purpose should I just set rotate to 0 for the body in every frame?

[liabru]

Try setting body.inertia to Infinity when you create your body.

If you need more control, see issue #29

[ghost]

Thanks! I want to build a platformer, it seems a important feature for character. :)