[1.15]How to get all the entities in the world from WorldTickEvent

[Zemelua]

Is there a way to get all the Living entities in the world from the WorldTickEvent? I don't want to use LivingUpdateEvent because it slows down the game.

[Zemelua]

Changes the attributes of all other LivingEntity when the specified player is not moving. I'm sorry if my perception of Side is wrong, but when I run this in a server environment, WorldTickEvent will check the specified player and then give changes directly to other LivingEntity. However, if it detects that the specified player is stopped, assigns its state to a variable, checks that variable, and the LivingUpdateEvent of each client changes to its own player, it is necessary to send a packet. thinking about. I don't want to use LivingUpdateEvent because I don't really understand packet and I think it's a heavy load to send a packet every time the specified player stops.

Edited February 3, 2021 by Zemelua
Correction of sentences

[Zemelua]

The core player gets a match with getDisplayName from WorldTickEvent.world.getPlayers.

[Zemelua]

Is it possible to get the ArrowEntity from LivingUpdateEvent?