Send all current _contactBeginEvents and _contactEndEvents where either of the PhysicsShape involved are valid (see _isValid ) and have a callback target assigned (see _callbackTarget ). These events will only be created if both of the shape pairs has _contactEvents set to true. Only callback targets that implement PhysicsCallbacks.IContactCallback will be called. This will be called automatically if _autoContactCallbacks is true. This must be called on the main thread.

public void SendContactCallbacks()