So cIRCulation has seen some changes since the last post. I still haven't added interpretation for actions, but I've finally implemented the command parser and added a plugin system on top of that! Some cleanup, and I'll probably release an alpha build out here.
Meanwhile, I've begun work on another project -- Raceway Construction Kit is its working title, and it's more or less a remake of an old EA game, Racecar Destruction Set. I'm currently putting together a prototype on XNA, but I'm exploring other options for the final game, including Torque or OGRE.