Paper/Spigot-Server-Patches/0521-Spawn-player-in-correct-world-on-login.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Wyatt Childers <wchilders@nearce.com>
Date: Fri, 3 Jul 2020 14:57:05 -0400
Subject: [PATCH] Spawn player in correct world on login


diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
index 4c3a2e3cfd60321b3b74d143a32aa5f5d59d7e1e..34b45a6818209245fa5692a83cf4143030057095 100644
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
@@ -196,7 +196,18 @@ public abstract class PlayerList {
         }String lastKnownName = s; // Paper
         // CraftBukkit end
 
-        if (nbttagcompound != null) {
+        // Paper start - move logic in Entity to here, to use bukkit supplied world UUID.
+        if (nbttagcompound != null && nbttagcompound.hasKey("WorldUUIDMost") && nbttagcompound.hasKey("WorldUUIDLeast")) {
+            UUID uid = new UUID(nbttagcompound.getLong("WorldUUIDMost"), nbttagcompound.getLong("WorldUUIDLeast"));
+            org.bukkit.World bWorld = org.bukkit.Bukkit.getServer().getWorld(uid);
+            if (bWorld != null) {
+                resourcekey = ((CraftWorld) bWorld).getHandle().getDimensionKey();
+            } else {
+                resourcekey = World.OVERWORLD;
+            }
+        } else if (nbttagcompound != null) {
+            // Vanilla migration support
+            // Paper end
             DataResult dataresult = DimensionManager.a(new Dynamic(DynamicOpsNBT.a, nbttagcompound.get("Dimension")));
             Logger logger = PlayerList.LOGGER;