Things spawn on planets now!

Changes:

• Can no longer rocket off the planet by pressing space really fast again and again while spacewalking.
• Now, when walking around on planets, things spawn around you, like pillars and tall hexes and such. This means I can now spawn things on planets, so that'll be fun—enemies will be a thing eventually, etc.
• Adjusted FOV in first-person view to be higher and more humany