It was not! I believe rscaper is working on something, however.
Matth, Starshatter, like FSO, is not and never will be perfect, but the game engine is set up inherently different than FSO's. Gameplay is centered around a type of dynamic campaign system. It can't compete with the complexity of something like Falcon 4.0, but then again, now that it's open source, there may be ways of making it better still. The engine allows for single, scripted missions as well, but I do not believe it's nearly as sophisticated as FreeSpace in this regard...
Then again, FreeSpace won't let you re-program your own mission objectives and waypoints, jump to other planetary systems around a star, or launch from your carrier, break from orbit to do an atmospheric strike, and then fly back to your carrier... much like a boss.