So I've added mouse support to:

1. Show a cursor where your mouse (or controller) is
2. Show a selection when you press and drag your left mouse button, and select the ships when the button is released.
3. Send units to your cursor when you press the right mouse button.

I'm using my dong2 (https://github.com/josefnpat/dong2/) library to interpret the mouse input, which means it should be super easy to add controllers!

And of course always some juice: Bullet spray.

With all that in mind, check out the demo video for all this on YouTube!