Because of the heavy usage of this function in objects.cpp and the mixed use of aliases and direct references to the active object in Operate*Door functions I've done some refactoring of those areas beyond what is strictly necessary. Hopefully this makes sense and is reasonable to include in this change.
This option completely disables all audio handling, including audio
loading code and dependencies.
Dialog text length is estimated to be somewhere between
Cain and Griswold speed.
