Player life counters are separate.
When one player dies they lose a life and are turned into a bubble.
If the other player pops it, they are alive again.
If all players are bubbled, they get kicked out of the level.
If the bubbled player ran out of lives, they can not come back to life
until the level is over.
Whenever a level change happens, everyone's life count is set to a
minimum of two.
No game overs.
Took heavy inspiration from Kaze Emanuar
Due to my compile & launch scripts, I was silently ignoring warnings
this whole time. I've fixed my process, and gone back to fixed all of
the warnings I could (even outside of my code).