I'm so glad it made it you chuckle! The planet impact ripples was the first shader I've written for a game!
Left click shoots a shield "projectile". When the projectile impacts something, it automatically expands the "shield". Alternatively you can right click before the "projectile" impacts something and expand the "shield" mid air.
Depth perception of the missiles is really hard, so expanding the shields early allows you to be less accurate.
I did a really bad job with the UI / HUD. I was so confused by the UI layout system. Need to find some tutorials on that! I added the right click mechanic in like the last 24 hours and throw some text in the top right haha...