- Item count has always scaled up with player count. Items
spawn every N tics. Previously, these items were evenly
distributed across all item spots. Now, only one monitor
is spawned at a time and the number of items inside scales
up.
- Emeralds spawn inside of monitors instead of loosely.
- Sphere boxes should spawn in the same way as before.
- Once a monitor has been spawned at an item spot, no more
monitors can be spawned there until that one is destroyed.
There's an additional delay of one spawn interval before
a monitor can be spawned in that location again. This is
so a monitor cannot ever instantly spawn back if one is
destroyed at just the right time.
