do not count hidden players
Created by: Helianthella
closes https://github.com/themanaworld/tmwa/issues/117
Let's say someone is doing boss run and a GM does @hugo
and enters the room before the next round start. This would cause getmapusers
to also count the GM so it would make it harder for players as the boss room would spawn more mobs since it would expect one more player. (I tested with Celestia)
getareausers
does not suffer from this problem because it checks Opt0::HIDE
but getmapusers
just grabs m->users