OptionalfogOptionalhideHide units standing on cells that are explored but not currently visible —
the classic ghost state, where memory shows you the terrain you mapped but
not who is walking on it right now. Ignored when no fogData is given.
A unit with fogRevealRange > 0 always sees its own cell, so this only
ever hides units that grant no vision (enemies, neutrals). Default true.
Optional fog-of-war data. Units with
fogRevealRange > 0will update it as they move.