MOAI might make a great front-end for you .. it has quite powerful text basics ..
Though speaking of frontends, it is actually also possible to get the game to open a socket and connect to it from Emacs, programming your ship from the outside. It's not very polished at this point, but I intend to expose the in-game UI over the nREPL protocol so you can code other clients for it if the in-game editor doesn't suit your fancy: https://gitlab.com/technomancy/bussard/blob/master/bussard.e...