mirror of https://github.com/PaperMC/Paper.git
114 lines
6.2 KiB
Diff
114 lines
6.2 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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== AT ==
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public net.minecraft.server.level.ChunkMap addEntity(Lnet/minecraft/world/entity/Entity;)V
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diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
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index 80009022bc7b9d3414b2af3a3b21192def243405..7e11a85cb826deedcf9aa22b849ced2c1240e64a 100644
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--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
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+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
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@@ -1024,6 +1024,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
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+ ": " + entity + (this.entityMap.containsKey(entity.getId()) ? " ALREADY CONTAINED (This would have crashed your server)" : ""), new Throwable());
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return;
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}
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+ if (entity instanceof ServerPlayer && ((ServerPlayer) entity).supressTrackerForLogin) return; // Delay adding to tracker until after list packets
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// Paper end
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if (!(entity instanceof EnderDragonPart)) {
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EntityType<?> entitytypes = entity.getType();
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diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
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index fd2bc49f713cccdcb2a3e49db52f56374690c5de..8660fc4bc748131d9bc3088afb5bb9af073300f8 100644
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--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
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+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
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@@ -254,6 +254,7 @@ public class ServerPlayer extends Player {
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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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public String kickLeaveMessage = null; // SPIGOT-3034: Forward leave message to PlayerQuitEvent
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// CraftBukkit end
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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 89d45ae9b2856aaed265d7333ba2e69a3836bb2e..6cc70d6eb84fb819fb7f1b8b1ef1bbb4715315e5 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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@@ -282,6 +282,12 @@ public abstract class PlayerList {
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this.playersByUUID.put(player.getUUID(), player);
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// this.broadcastAll(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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+ player.supressTrackerForLogin = true;
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+ worldserver1.addNewPlayer(player);
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+ this.server.getCustomBossEvents().onPlayerConnect(player); // see commented out section below worldserver.addPlayerJoin(entityplayer);
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+ mountSavedVehicle(player, worldserver1, nbttagcompound);
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+ // Paper end
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// CraftBukkit start
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CraftPlayer bukkitPlayer = player.getBukkitEntity();
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@@ -320,6 +326,8 @@ public abstract class PlayerList {
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player.connection.send(new ClientboundPlayerInfoPacket(ClientboundPlayerInfoPacket.Action.ADD_PLAYER, new ServerPlayer[]{entityplayer1}));
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}
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player.sentListPacket = true;
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+ player.supressTrackerForLogin = false; // Paper
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+ ((ServerLevel)player.level).getChunkSource().chunkMap.addEntity(player); // Paper - track entity now
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// CraftBukkit end
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player.connection.send(new ClientboundSetEntityDataPacket(player.getId(), player.getEntityData(), true)); // CraftBukkit - BungeeCord#2321, send complete data to self on spawn
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@@ -345,6 +353,11 @@ public abstract class PlayerList {
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playerconnection.send(new ClientboundUpdateMobEffectPacket(player.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(player, worldserver1, s1);
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+ }
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+ private void mountSavedVehicle(ServerPlayer player, ServerLevel worldserver1, CompoundTag nbttagcompound) {
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+ // Paper end
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if (nbttagcompound != null && nbttagcompound.contains("RootVehicle", 10)) {
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CompoundTag nbttagcompound1 = nbttagcompound.getCompound("RootVehicle");
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// CraftBukkit start
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@@ -393,6 +406,10 @@ 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(ServerPlayer player, ServerLevel worldserver1, String s1) {
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+ // Paper end
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player.initInventoryMenu();
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// CraftBukkit - Moved from above, added world
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// Paper start - Add to collideRule team if needed
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@@ -402,6 +419,7 @@ public abstract class PlayerList {
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scoreboard.addPlayerToTeam(player.getScoreboardName(), collideRuleTeam);
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}
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// Paper end
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+ // CraftBukkit - Moved from above, added world
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PlayerList.LOGGER.info("{}[{}] logged in with entity id {} at ([{}]{}, {}, {})", player.getName().getString(), s1, player.getId(), worldserver1.serverLevelData.getLevelName(), player.getX(), player.getY(), player.getZ());
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}
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