Creatures, day & night, and drawing the world.
lol tee hee
KCH2J-K7CF6-RVCG7-MXCHX-R7YKZ
Why do we need to move any mobs around if no one's playing?
There's nothing to draw, nothing is being changed.
There's nothing to light/darken, the clients are supposed to do that.
Minecraft is poorly coded.