Sorry I can't script BUT i maybe able to make a map I know how to mostly. I wish I could get a pic of my frist map in the constuctor but when I am done packaging it and putting terrain in I could show you it. Rember its my first map. and the only thing I have to learn that you said was to make interiors.
PS Its a fort map with a forest in between them.
EDIT: i found out what interiors are, they are the buildings it self.