Collisions
Doesn't look like much, but bullet to ship collisions and applying of damage done. A hitpoint bar shows below the ships.
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I'd like to get bullets to fly in a parabolic arc, like shells. So might try that.
Next I'll need to have a destroyed state for ships, ship to ship collisions, visual differences between enemy / player fleets, selected ship indicator, and picking enemy ships (at the moment we just shoot at a point in space)
So much to do - so little time!