use
public TypedActionResult<ItemStack> use(ItemStack staffStack, World world, PlayerEntity user, Hand hand)(source)
Called on both the client and the server by Minecraft when the player uses the staff.
If the staff can be used for multiple ticks, override maxUseTime to return a positive number, and call PlayerEntity.setCurrentHand on user with hand as the argument.
On the logical client, the return values have the following meaning:
SUCCESS: Swing hand, and reset equip progress
CONSUME, CONSUME_PARTIAL: Don't swing hand, and reset equip progress
PASS, FAIL: Don't swing hand, and don't reset equip progress
On the logical server, the return values have the following meaning (if used by player):
SUCCESS: Swing hand
CONSUME, CONSUME_PARTIAL, PASS, FAIL: Don't swing hand
Parameters
staff
The item stack used to perform the action
world
The world the user is in
user
The player, which uses the staff