Today:  Activate, and a flying carpet
	Hopefully anyway

First:  Activate
	Let's make a door
	Should have two states:  Open and closed
		How should it open?  Swing?  Slide?
		Let's pick swing
	Collision detection:
		We'll turn it off when the door is open
		Makes things simple
	Texture:
		Find something
	Animation:
		Doors normally take a moment to open

Second:  A vehicle
	Movement should change when we're on it
	activate and not activate:  Get in/out of vehicle
	Rules change on controls too