Great idea for movement without using actual keys, I dig it, plus it might work for mobile with touch (just an idea for future use of this mechanic :3 )
the only thing I might improve is the shooting rate and the hit indicator when you hit the enemy ship
plus, just an idea for the future if you move the mouse far from the ship, it can gain speed
can be a cool idea
overall incredible work like it
Good luck at the jam going to rate it now :)
btw curious to know if the work on the Godot engine is smoother than unity
if you have any insights to share :)