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Shadow Sanity Splitter

Splits the sanity from fighting shadow creatures among the participants.
Can be configured.

There are three configuration options, listed below.

Damage dealt
(Default)
Sanity is distributed based on how much damage the participants contributed.
If Wilson did 25% of shadow's health as damage, and Wigfrid did the rest, Wilson would get 25% of the sanity reward and Wigfrid would get 75%.

Participation
Sanity is distributed based on whoever contributed at all to the fight.
If Wilson and Wendy are fighting a shadow and each land at least 1 hit while Webber watches and does nothing, Wilson and Wendy both get half the sanity reward, regardless of how much damage was dealt.

Spawner
Sanity is given to the person who spawned the shadow.
If Wilson spawns a shadow and Wolfgang kills the shadow, all of the sanity goes to Wilson.
This option is not recommended, because anyone under 50% sanity can spawn shadows, but that doesn't necessarily mean that the shadows will attack them. They can attack anyone insane.