I did a lot less than I wanted today. But here's my update:

The idea is that there are these "emitters" that keep sending signals to the canons to fire. There will be other types of emitters too, more specifically to move the canons. You, will have to disable/enable the canons in order to have them correctly aligned with the enemy objects to be fired.

I don't even know if that will work or be any fun. But I'll keep working on it. :)

See you all tomorrow.