I have created Amnesia Sanity System in vanilla minecraft.Player's Sanity will drop if player standing in dark cave,in the night. The sanity will effect the player such as shaking,slowness,mining slow,slowness,Blindness, nausea, enven hearing Strange voice in the head.If the player's Sanity reach 0.the player will suffer from Insanity and suicide.
The player'sanity decrease if:
-Standing in dark cave with no light
-Standing in the night with no light
-Being hurt
-Being attacked in the dark.
To regain Sanity,player can:
-drink Sanity potion
-Standing near light source(not all type of light source)
-eating Goldeb apple or carrot
-Using lantern in the dark or in the night
-under the day day light
To use the lantern,player must put the lantern on the first active hot bar
To refill thr lantern with oil,player must put the lantern on the first hot bar and holding the oil bottle to refill it