How to detect collision but do not collide in box2d?
box2d, c++, collision
Solution
If the fixture never needs to collide with anything you could make it a sensor. If you need it to collide with some things but not others you could do contact->SetEnabled(false) in the PreSolve of the collision listener, depending on what it collided with.
Problem
How to detect if body collides other body but do not react on this collision. By default i - detect collision and bodies collide. If i set fixtureDef filter - bodies do not collide but i can not detect collision. Help please!