I have been trying to implement a reverb effect for when the listener moves into a certain zone.

I call this zone the reverb zone.

I learned to use wxThreads to accomplish checking for when a listener is in the reverb zone and applying the effect to sound producer tracks that have a sound producer in the reverb zone along with a the listener.

It has been mostly successful, but needs to be more well defined before it gets added to the master branch on github and later the next release.