Spring RTS Engine

Hay I have a general question

is it possible to make units that are being carried by a transport free to shoot at units on the ground? like in supreme commander?

or would I be better off trying to create my own transport gadget with adustible varibale like that?

yes

set isFirePlatform to true in your unit def file and things on it can shoot out

there are reasons you might want to make it with a gadget but for the basic functionality that will do