is it possible to have an actor that covers the whole scene, but it doesn't block clicks? i would like to have an overlay above the whole game, and it would be a lot easier this way than putting it in in every different world...
To not block clicks on other Actor objects, the overlay would have to be painted first. Clicks on the World background will all be blocked, however. You could use the setPaintOrder method to place objects that clicks may be detected on in front of the overlay.