112 lines
6.5 KiB
Diff
112 lines
6.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Sun, 19 Apr 2020 00:05:46 -0400
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Subject: [PATCH] Fix Longstanding Broken behavior of PlayerJoinEvent
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For years, plugin developers have had to delay many things they do
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inside of the PlayerJoinEvent by 1 tick to make it actually work.
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This all boiled down to 1 reason why: The event fired before the
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player was fully ready and joined to the world!
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Additionally, if that player logged out on a vehicle, the event
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fired before the vehicle was even loaded, so that plugins had no
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access to the vehicle during this event either.
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This change finally fixes this issue, fully preparing the player
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into the world as a fully ready entity, vehicle included.
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There should be no plugins that break because of this change, but might
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improve consistency with other plugins instead.
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For example, if 2 plugins listens to this event, and the first one
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teleported the player in the event, then the 2nd plugin actually
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would be getting a valid player!
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This was very non deterministic. This change will ensure every plugin
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receives a deterministic result, and should no longer require 1 tick
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delays anymore.
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diff --git a/src/main/java/net/minecraft/server/level/EntityPlayer.java b/src/main/java/net/minecraft/server/level/EntityPlayer.java
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index 5b9778c0a7a52ddb05ca7a6864e3b8852cec03e4..eaeac60b2d54d8e7d298ea412d888471a7ea9e79 100644
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--- a/src/main/java/net/minecraft/server/level/EntityPlayer.java
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+++ b/src/main/java/net/minecraft/server/level/EntityPlayer.java
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@@ -239,6 +239,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
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public double maxHealthCache;
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public boolean joining = true;
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public boolean sentListPacket = false;
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+ public boolean supressTrackerForLogin = false; // Paper
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public Integer clientViewDistance;
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// CraftBukkit end
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public PlayerNaturallySpawnCreaturesEvent playerNaturallySpawnedEvent; // Paper
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diff --git a/src/main/java/net/minecraft/server/level/PlayerChunkMap.java b/src/main/java/net/minecraft/server/level/PlayerChunkMap.java
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index 80c7ff059b78f55ec9c390bd728186a94074e603..94860c06717e8dcf969277562e88687e9a99aaa4 100644
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--- a/src/main/java/net/minecraft/server/level/PlayerChunkMap.java
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+++ b/src/main/java/net/minecraft/server/level/PlayerChunkMap.java
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@@ -1578,7 +1578,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
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});
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}
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- protected void addEntity(Entity entity) {
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+ public void addEntity(Entity entity) { // Paper - protected -> public
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org.spigotmc.AsyncCatcher.catchOp("entity track"); // Spigot
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// Paper start - ignore and warn about illegal addEntity calls instead of crashing server
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if (!entity.valid || entity.world != this.world || this.trackedEntities.containsKey(entity.getId())) {
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@@ -1587,6 +1587,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
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.printStackTrace();
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return;
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}
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+ if (entity instanceof EntityPlayer && ((EntityPlayer) entity).supressTrackerForLogin) return; // Delay adding to tracker until after list packets
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// Paper end
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if (!(entity instanceof EntityComplexPart)) {
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EntityTypes<?> entitytypes = entity.getEntityType();
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diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
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index b5600711c29b00f2d7863c0493a21f5080127e9c..c9a8e5c04a10c28ce79368a783dfe3c8e3709583 100644
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--- a/src/main/java/net/minecraft/server/players/PlayerList.java
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+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
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@@ -276,6 +276,12 @@ public abstract class PlayerList {
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this.j.put(entityplayer.getUniqueID(), entityplayer);
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// this.sendAll(new PacketPlayOutPlayerInfo(PacketPlayOutPlayerInfo.EnumPlayerInfoAction.ADD_PLAYER, new EntityPlayer[]{entityplayer})); // CraftBukkit - replaced with loop below
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+ // Paper start - correctly register player BEFORE PlayerJoinEvent, so the entity is valid and doesn't require tick delay hacks
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+ entityplayer.supressTrackerForLogin = true;
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+ worldserver1.addPlayerJoin(entityplayer);
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+ this.server.getBossBattleCustomData().a(entityplayer); // see commented out section below worldserver.addPlayerJoin(entityplayer);
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+ mountSavedVehicle(entityplayer, worldserver1, nbttagcompound);
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+ // Paper end
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// CraftBukkit start
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PlayerJoinEvent playerJoinEvent = new org.bukkit.event.player.PlayerJoinEvent(cserver.getPlayer(entityplayer), PaperAdventure.asAdventure(chatmessage)); // Paper - Adventure
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cserver.getPluginManager().callEvent(playerJoinEvent);
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@@ -311,6 +317,8 @@ public abstract class PlayerList {
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entityplayer.playerConnection.sendPacket(new PacketPlayOutPlayerInfo(PacketPlayOutPlayerInfo.EnumPlayerInfoAction.ADD_PLAYER, new EntityPlayer[] { entityplayer1}));
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}
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entityplayer.sentListPacket = true;
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+ entityplayer.supressTrackerForLogin = false; // Paper
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+ ((WorldServer)entityplayer.world).getChunkProvider().playerChunkMap.addEntity(entityplayer); // Paper - track entity now
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// CraftBukkit end
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entityplayer.playerConnection.sendPacket(new PacketPlayOutEntityMetadata(entityplayer.getId(), entityplayer.getDataWatcher(), true)); // CraftBukkit - BungeeCord#2321, send complete data to self on spawn
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@@ -336,6 +344,11 @@ public abstract class PlayerList {
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playerconnection.sendPacket(new PacketPlayOutEntityEffect(entityplayer.getId(), mobeffect));
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}
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+ // Paper start - move vehicle into method so it can be called above - short circuit around that code
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+ onPlayerJoinFinish(entityplayer, worldserver1, s1);
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+ }
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+ private void mountSavedVehicle(EntityPlayer entityplayer, WorldServer worldserver1, NBTTagCompound nbttagcompound) {
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+ // Paper end
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if (nbttagcompound != null && nbttagcompound.hasKeyOfType("RootVehicle", 10)) {
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NBTTagCompound nbttagcompound1 = nbttagcompound.getCompound("RootVehicle");
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// CraftBukkit start
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@@ -384,6 +397,10 @@ public abstract class PlayerList {
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}
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}
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+ // Paper start
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+ }
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+ public void onPlayerJoinFinish(EntityPlayer entityplayer, WorldServer worldserver1, String s1) {
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+ // Paper end
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entityplayer.syncInventory();
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// Paper start - Add to collideRule team if needed
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final Scoreboard scoreboard = this.getServer().getWorldServer(World.OVERWORLD).getScoreboard();
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