Cporter5

I am attempting to create a mod that will add a new structure to the game, A defense platform. In short this "Structure" will have properties of several different units. For example, It will be able to be built from a planet. but then create a unit on the galactic map. I understand this concept is confusing so perhaps it will be better to site an example. Think of the shipyard. It is built as a planetary improvement but then creates a unit on the galactic map. It