
players can once again spawn on mushroom islands.
Currently it is impossible to spawn on mushroom islands, as the game moves spawn away from 0,0 when the continentalness (the perlin noise value that determines were oceans land beaches and mushroom islands generate) is low enough to generate oceans or lower (mushroom islands have a lower continentalness than oceans).
I suggest that if the continentalness is low enough to generate mushroom islands, that the spawn is not moved.