have it update one block at a time
problem solved
IMAFUCKINGGENIUS
oh yeah
relight 256+ blocks every game tick
great idea
._.
that is, assuming the lantern lights 8 blocks in every direction
that's a 16x16 area, which is 256 counting ONLY the ground
if you're in a cave or a forest, you can just about double that
and since we're using ambient occlusion, that's going to be even worse
THIS IS WHY WE CAN'T HAVE NICE THINGS