1 files changed, 48 insertions, 0 deletions
diff --git a/patches/server/0346-Don-t-move-existing-players-to-world-spawn.patch b/patches/server/0346-Don-t-move-existing-players-to-world-spawn.patch
new file mode 100644
index 0000000000..6d3a5af0c4
--- /dev/null
+++ b/patches/server/0346-Don-t-move-existing-players-to-world-spawn.patch
@@ -0,0 +1,48 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <[email protected]>
+Date: Thu, 9 Apr 2020 21:20:33 -0400
+Subject: [PATCH] Don't move existing players to world spawn
+
+This can cause a nasty server lag the spawn chunks are not kept loaded
+or they aren't finished loading yet, or if the world spawn radius is
+larger than the keep loaded range.
+
+By skipping this, we avoid potential for a large spike on server start.
+
+== AT ==
+public net.minecraft.server.level.ServerPlayer fudgeSpawnLocation(Lnet/minecraft/server/level/ServerLevel;)V
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+index e695b5ee0b9ce5dad81a7f894ef1e7fd868f11eb..b6698a65d778cea6b7dc9b8ebfceec2425c732b7 100644
+--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
++++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+@@ -337,7 +337,7 @@ public class ServerPlayer extends Player {
+         this.stats = server.getPlayerList().getPlayerStats(this);
+         this.advancements = server.getPlayerList().getPlayerAdvancements(this);
+         this.setMaxUpStep(1.0F);
+-        this.fudgeSpawnLocation(world);
++        // this.fudgeSpawnLocation(world); // Paper - Don't move existing players to world spawn
+         this.updateOptions(clientOptions);
+ 
+         this.cachedSingleHashSet = new com.destroystokyo.paper.util.misc.PooledLinkedHashSets.PooledObjectLinkedOpenHashSet<>(this); // Paper
+@@ -571,7 +571,7 @@ public class ServerPlayer extends Player {
+                 position = Vec3.atCenterOf(world.getSharedSpawnPos());
+             }
+             this.setLevel(world);
+-            this.setPos(position);
++            this.setPosRaw(position.x(), position.y(), position.z()); // Paper - don't register to chunks yet
+         }
+         this.gameMode.setLevel((ServerLevel) world);
+     }
+diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
+index 60e50ce92414515c22f4d71e517504a7377c7e64..4530ba80f7d3983cf4ed9908eb1109c58aa425f2 100644
+--- a/src/main/java/net/minecraft/server/players/PlayerList.java
++++ b/src/main/java/net/minecraft/server/players/PlayerList.java
+@@ -226,6 +226,7 @@ public abstract class PlayerList {
+         // Paper start - Entity#getEntitySpawnReason
+         if (nbttagcompound == null) {
+             player.spawnReason = org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.DEFAULT; // set Player SpawnReason to DEFAULT on first login
++            player.fudgeSpawnLocation(worldserver1); // Paper - Don't move existing players to world spawn
+         }
+         // Paper end - Entity#getEntitySpawnReason
+         player.setServerLevel(worldserver1);