Paper/patches/server/0865-Force-close-world-loading-screen.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Nassim Jahnke <jahnke.nassim@gmail.com>
Date: Wed, 2 Mar 2022 09:45:56 +0100
Subject: [PATCH] Force close world loading screen

Dead players would be stuck in the world loading screen and other players may
miss messages and similar sent in the join event if chunk loading is slow.
Paper already circumvents falling through the world before chunks are loaded,
so we do not need that. The client only needs the chunk it is currently in to
be loaded to close the loading screen, so we just send an empty one.

diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
index 1f221b5451004093af6e46b65b9e60499a12b5ad..8d4b8025a158b71b87682a67fb67e7fcbf0bd6c2 100644
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
@@ -422,6 +422,13 @@ public abstract class PlayerList {
 
         // Paper start - move vehicle into method so it can be called above - short circuit around that code
         onPlayerJoinFinish(player, worldserver1, s1);
+        // Send empty chunk, so players aren't stuck in the world loading screen
+        net.minecraft.core.Holder<net.minecraft.world.level.biome.Biome> plains = worldserver1.registryAccess().registryOrThrow(net.minecraft.core.Registry.BIOME_REGISTRY)
+            .getHolderOrThrow(net.minecraft.world.level.biome.Biomes.PLAINS);
+        player.connection.send(new net.minecraft.network.protocol.game.ClientboundLevelChunkWithLightPacket(
+            new net.minecraft.world.level.chunk.EmptyLevelChunk(worldserver1, player.chunkPosition(), plains),
+            worldserver1.getLightEngine(), null, null, true, false)
+        );
     }
     private void mountSavedVehicle(ServerPlayer player, ServerLevel worldserver1, CompoundTag nbttagcompound) {
         // Paper end