Be careful what you shoot at. Most things in here don't react too well
to bullets.
--
Capt. Ramius, Hunt for Red October
Its been said before, but it probably depends somewhat on internal ship
design. If the ship hallways have lots of plastic fascia like star
trek, then guns might be okay to use inside. If the inside of the
starships have a more modern warship/submarine feel then guns might damage
vital controls. Hence martial arts.
Star Wars combines the use of martial arts and long range combat by
making the Jedi so smooth they can just dodge or block shots fired at
them, while mere mortals have to make do with guns (for those who might not
be interested in martial arts).
Adding to the above about the insides of ships. Due to the relative
fragility of having little more than sheet metal between your sweet self
and the cold void of space may make guns extermely weak, little more
than something similar to a tazer or modern police weapons whose goal is
to incapcitate vs. kill. On the other hand (no pun intended), hand to
hand weapons could be very powerful so shooting is just used to cover
yourself and your friends long enough to get into close combat. This
would of course require some other justification on-planet when shooting
matters less.
Just a few random thoughts,
Dan