Spread out player list ticks

patches/server/0161-Spread-out-player-list-ticks.patch

@@ -0,0 +1,50 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: James Lyne <jim+github@not-null.co.uk>
+Date: Mon, 7 Dec 2020 17:52:36 +0000
+Subject: [PATCH] Spread out player list ticks
+
+
+diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
+index 3f634a266..7ac756179 100644
+--- a/src/main/java/net/minecraft/server/PlayerList.java
++++ b/src/main/java/net/minecraft/server/PlayerList.java
+@@ -919,10 +919,11 @@ public abstract class PlayerList {
+     }
+ 
+     public void tick() {
+-        if (++this.w > 600) {
++        if (true) {
++            int tick = getTick();  // Purpur
+             // CraftBukkit start
+-            for (int i = 0; i < this.players.size(); ++i) {
+-                final EntityPlayer target = (EntityPlayer) this.players.get(i);
++            if (tick < this.players.size()) { // Purpur
++                final EntityPlayer target = (EntityPlayer) this.players.get(tick); // Purpur
+ 
+                 target.playerConnection.sendPacket(new PacketPlayOutPlayerInfo(PacketPlayOutPlayerInfo.EnumPlayerInfoAction.UPDATE_LATENCY, Iterables.filter(this.players, new Predicate<EntityPlayer>() {
+                     @Override
+@@ -931,12 +932,23 @@ public abstract class PlayerList {
+                     }
+                 })));
+             }
++
+             // CraftBukkit end
+-            this.w = 0;
++            // Purpur start
++            if (tick >= 600) {
++                setTick(0);
++            } else {
++                setTick(tick + 1);
++            }
++            // Purpur end
+         }
+ 
+     }
+ 
++    public final int getTick() { return this.w; } // Purpur - OBFHELPER
++
++    public final void setTick(int tick) { this.w = tick; } // Purpur - OBFHELPER
++
+     public void sendAll(Packet<?> packet) {
+         for (int i = 0; i < this.players.size(); ++i) {
+             ((EntityPlayer) this.players.get(i)).playerConnection.sendPacket(packet);