Paper/patches/server/0383-Fix-Longstanding-Broken-behavior-of-PlayerJoinEvent.patch
Nassim Jahnke 058d7c1aa3
Updated Upstream (Bukkit/CraftBukkit/Spigot)
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
13eb4146 SPIGOT-5217, SPIGOT-6183: Add RespawnReason to PlayerRespawnEvent

CraftBukkit Changes:
5ee3419b7 SPIGOT-5217, SPIGOT-6183: Add RespawnReason to PlayerRespawnEvent

Spigot Changes:
514cf03a Rebuild patches and add RespawnReason.PLUGIN to Player#respawn
2023-04-10 10:03:36 +02:00

114 lines
6.1 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 19 Apr 2020 00:05:46 -0400
Subject: [PATCH] Fix Longstanding Broken behavior of PlayerJoinEvent
For years, plugin developers have had to delay many things they do
inside of the PlayerJoinEvent by 1 tick to make it actually work.
This all boiled down to 1 reason why: The event fired before the
player was fully ready and joined to the world!
Additionally, if that player logged out on a vehicle, the event
fired before the vehicle was even loaded, so that plugins had no
access to the vehicle during this event either.
This change finally fixes this issue, fully preparing the player
into the world as a fully ready entity, vehicle included.
There should be no plugins that break because of this change, but might
improve consistency with other plugins instead.
For example, if 2 plugins listens to this event, and the first one
teleported the player in the event, then the 2nd plugin actually
would be getting a valid player!
This was very non deterministic. This change will ensure every plugin
receives a deterministic result, and should no longer require 1 tick
delays anymore.
== AT ==
public net.minecraft.server.level.ChunkMap addEntity(Lnet/minecraft/world/entity/Entity;)V
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index 9c5925bc6a0fb277970d46c34dd812cc765a537a..f2bdb647f137a1334789dc56e517844b74d70bd9 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -1039,6 +1039,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+ ": " + entity + (this.entityMap.containsKey(entity.getId()) ? " ALREADY CONTAINED (This would have crashed your server)" : ""), new Throwable());
return;
}
+ if (entity instanceof ServerPlayer && ((ServerPlayer) entity).supressTrackerForLogin) return; // Delay adding to tracker until after list packets
// Paper end
if (!(entity instanceof EnderDragonPart)) {
EntityType<?> entitytypes = entity.getType();
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index 2d54f2abae82521fbd34aa046f26ec8e72df8362..e465e3e45eeeecc31dafc1f04505c04ea382615a 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -265,6 +265,7 @@ public class ServerPlayer extends Player {
public double maxHealthCache;
public boolean joining = true;
public boolean sentListPacket = false;
+ public boolean supressTrackerForLogin = false; // Paper
public Integer clientViewDistance;
public String kickLeaveMessage = null; // SPIGOT-3034: Forward leave message to PlayerQuitEvent
// CraftBukkit end
diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
index 5c2105528b8e1820b3cc6379b27d363e267b6a7b..a0832d8e8b9e91073c15e5a87953d6ccee544ae0 100644
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
@@ -302,6 +302,12 @@ public abstract class PlayerList {
this.playersByUUID.put(player.getUUID(), player);
// this.broadcastAll(ClientboundPlayerInfoUpdatePacket.createPlayerInitializing(List.of(entityplayer))); // CraftBukkit - replaced with loop below
+ // Paper start - correctly register player BEFORE PlayerJoinEvent, so the entity is valid and doesn't require tick delay hacks
+ player.supressTrackerForLogin = true;
+ worldserver1.addNewPlayer(player);
+ this.server.getCustomBossEvents().onPlayerConnect(player); // see commented out section below worldserver.addPlayerJoin(entityplayer);
+ mountSavedVehicle(player, worldserver1, nbttagcompound);
+ // Paper end
// CraftBukkit start
CraftPlayer bukkitPlayer = player.getBukkitEntity();
@@ -340,6 +346,8 @@ public abstract class PlayerList {
player.connection.send(ClientboundPlayerInfoUpdatePacket.createPlayerInitializing(List.of(entityplayer1)));
}
player.sentListPacket = true;
+ player.supressTrackerForLogin = false; // Paper
+ ((ServerLevel)player.level).getChunkSource().chunkMap.addEntity(player); // Paper - track entity now
// CraftBukkit end
player.getEntityData().refresh(player); // CraftBukkit - BungeeCord#2321, send complete data to self on spawn
@@ -365,6 +373,11 @@ public abstract class PlayerList {
playerconnection.send(new ClientboundUpdateMobEffectPacket(player.getId(), mobeffect));
}
+ // Paper start - move vehicle into method so it can be called above - short circuit around that code
+ onPlayerJoinFinish(player, worldserver1, s1);
+ }
+ private void mountSavedVehicle(ServerPlayer player, ServerLevel worldserver1, CompoundTag nbttagcompound) {
+ // Paper end
if (nbttagcompound != null && nbttagcompound.contains("RootVehicle", 10)) {
CompoundTag nbttagcompound1 = nbttagcompound.getCompound("RootVehicle");
// CraftBukkit start
@@ -413,6 +426,10 @@ public abstract class PlayerList {
}
}
+ // Paper start
+ }
+ public void onPlayerJoinFinish(ServerPlayer player, ServerLevel worldserver1, String s1) {
+ // Paper end
player.initInventoryMenu();
// CraftBukkit - Moved from above, added world
// Paper start - Add to collideRule team if needed
@@ -422,6 +439,7 @@ public abstract class PlayerList {
scoreboard.addPlayerToTeam(player.getScoreboardName(), collideRuleTeam);
}
// Paper end
+ // CraftBukkit - Moved from above, added world
PlayerList.LOGGER.info("{}[{}] logged in with entity id {} at ([{}]{}, {}, {})", player.getName().getString(), s1, player.getId(), worldserver1.serverLevelData.getLevelName(), player.getX(), player.getY(), player.getZ());
}