From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Martijn Muijsers <martijnmuijsers@live.nl>
Date: Tue, 29 Nov 2022 23:30:38 +0100
Subject: [PATCH] Optimize player list for sending player info

License: MIT (https://opensource.org/licenses/MIT)
Gale - https://galemc.org

This patch is based on the following patch:
"Spread out and optimise player list ticksSpread out and optimise player list ticks"
By: James Lyne <jim+github@not-null.co.uk>
As part of: Purpur (https://github.com/PurpurMC/Purpur)
Licensed under: MIT (https://opensource.org/licenses/MIT)

* Purpur copyright *

MIT License

Copyright (c) 2019-2022 PurpurMC

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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SOFTWARE.

diff --git a/net/minecraft/server/players/PlayerList.java b/net/minecraft/server/players/PlayerList.java
index 2b4431fd68054bfe8d216fd5461b1c56c692f48b..e03a0a350fd95406d2a5e3d220c9839326a8e1b6 100644
--- a/net/minecraft/server/players/PlayerList.java
+++ b/net/minecraft/server/players/PlayerList.java
@@ -899,10 +899,19 @@ public abstract class PlayerList {
         ServerPlayer[] sendAllPlayerInfoBucket = this.sendAllPlayerInfoBuckets[this.sendAllPlayerInfoIn];
 
         if (sendAllPlayerInfoBucket != null) {
-            for (ServerPlayer target : sendAllPlayerInfoBucket) {
+            for (ServerPlayer targetPlayer : sendAllPlayerInfoBucket) { // Gale - Purpur - optimize player list for sending player info
                 // Gale end - Purpur - spread out sending all player info
+                // Gale start - Purpur - optimize player list for sending player info
+                var target = targetPlayer.getBukkitEntity();
+                final List<ServerPlayer> list = new java.util.ArrayList<>(this.players.size());
+                for (ServerPlayer player : this.players) {
+                    if (target.canSeePlayer(player.getUUID())) {
+                        list.add(player);
+                    }
+                }
 
-                target.connection.send(new ClientboundPlayerInfoUpdatePacket(EnumSet.of(ClientboundPlayerInfoUpdatePacket.Action.UPDATE_LATENCY), com.google.common.collect.Collections2.filter(this.players, t -> target.getBukkitEntity().canSee(t.getBukkitEntity()))));
+                targetPlayer.connection.send(new ClientboundPlayerInfoUpdatePacket(EnumSet.of(ClientboundPlayerInfoUpdatePacket.Action.UPDATE_LATENCY), list));
+                // Gale end - Purpur - optimize player list for sending player info
             }
             // Gale start - Purpur - spread out sending all player info
         }