Impossible map generation

[skotz]

It's possible for maps to be generated where each player is on their own island.

Some example seeds:

-7665248982915207957
-984815081642111362
6893533907304584231
8560455244726712533
3629729608309901792
-6228777535331695590
-4546632136804086310
2484331842854666180