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Paper-Old/patches/unapplied/server/0379-Move-player-to-spawn-point-if-spawn-in-unloaded-worl.patch
2023-12-05 18:20:55 +01:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: 2277 <38501234+2277@users.noreply.github.com>
Date: Tue, 31 Mar 2020 10:33:55 +0100
Subject: [PATCH] Move player to spawn point if spawn in unloaded world
If the playerdata contains an invalid world (missing, unloaded, invalid,
etc.), spawn the player at the spawn point of the main world.
Co-authored-by: Wyatt Childers <wchilders@nearce.com>
Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
index f8679d4b52a5948048a91338dc2cac8bfa5ef9e3..ac6c1c1cf0d736c31a4e3666cb9e10ba8bc1c7c5 100644
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
@@ -196,7 +196,7 @@ public abstract class PlayerList {
}
CompoundTag nbttagcompound = this.load(player);
- ResourceKey resourcekey;
+ ResourceKey<Level> resourcekey = null; // Paper
// CraftBukkit start - Better rename detection
if (nbttagcompound != null && nbttagcompound.contains("bukkit")) {
CompoundTag bukkit = nbttagcompound.getCompound("bukkit");
@@ -204,15 +204,42 @@ public abstract class PlayerList {
}
// CraftBukkit end
+ // Paper start - move logic in Entity to here, to use bukkit supplied world UUID & reset to main world spawn if no valid world is found
+ boolean invalidPlayerWorld = false;
+ bukkitData: if (nbttagcompound != null) {
+ // The main way for bukkit worlds to store the world is the world UUID despite mojang adding custom worlds
+ final org.bukkit.World bWorld;
+ if (nbttagcompound.contains("WorldUUIDMost") && nbttagcompound.contains("WorldUUIDLeast")) {
+ bWorld = org.bukkit.Bukkit.getServer().getWorld(new UUID(nbttagcompound.getLong("WorldUUIDMost"), nbttagcompound.getLong("WorldUUIDLeast")));
+ } else if (nbttagcompound.contains("world", net.minecraft.nbt.Tag.TAG_STRING)) { // Paper - legacy bukkit world name
+ bWorld = org.bukkit.Bukkit.getServer().getWorld(nbttagcompound.getString("world"));
+ } else {
+ break bukkitData; // if neither of the bukkit data points exist, proceed to the vanilla migration section
+ }
+ if (bWorld != null) {
+ resourcekey = ((CraftWorld) bWorld).getHandle().dimension();
+ } else {
+ resourcekey = Level.OVERWORLD;
+ invalidPlayerWorld = true;
+ }
+ }
+ if (resourcekey == null) { // only run the vanilla logic if we haven't found a world from the bukkit data
+ // Below is the vanilla way of getting the dimension, this is for migration from vanilla servers
+ // Paper end
if (nbttagcompound != null) {
DataResult<ResourceKey<Level>> dataresult = DimensionType.parseLegacy(new Dynamic(NbtOps.INSTANCE, nbttagcompound.get("Dimension"))); // CraftBukkit - decompile error
Logger logger = PlayerList.LOGGER;
Objects.requireNonNull(logger);
- resourcekey = (ResourceKey) dataresult.resultOrPartial(logger::error).orElse(player.serverLevel().dimension()); // CraftBukkit - SPIGOT-7507: If no dimension, fall back to existing dimension loaded from "WorldUUID", which in turn defaults to World.OVERWORLD
+ // Paper start - reset to main world spawn if no valid world is found
+ final Optional<ResourceKey<Level>> result = dataresult.resultOrPartial(logger::error);
+ invalidPlayerWorld = result.isEmpty();
+ resourcekey = result.orElse(Level.OVERWORLD);
+ // Paper end
} else {
- resourcekey = player.serverLevel().dimension(); // CraftBukkit - SPIGOT-7507: If no dimension, fall back to existing dimension loaded from "WorldUUID", which in turn defaults to World.OVERWORLD
+ resourcekey = Level.OVERWORLD; // Paper - revert to vanilla default main world, this isn't an "invalid world" since no player data existed
}
+ } // Paper
ResourceKey<Level> resourcekey1 = resourcekey;
ServerLevel worldserver = this.server.getLevel(resourcekey1);
@@ -221,6 +248,7 @@ public abstract class PlayerList {
if (worldserver == null) {
PlayerList.LOGGER.warn("Unknown respawn dimension {}, defaulting to overworld", resourcekey1);
worldserver1 = this.server.overworld();
+ invalidPlayerWorld = true; // Paper - reset to main world if no world with parsed value is found
} else {
worldserver1 = worldserver;
}
@@ -228,6 +256,10 @@ public abstract class PlayerList {
// Paper start
if (nbttagcompound == null) {
player.spawnReason = org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.DEFAULT; // set Player SpawnReason to DEFAULT on first login
+ // Paper start - reset to main world spawn if first spawn or invalid world
+ }
+ if (nbttagcompound == null || invalidPlayerWorld) {
+ // Paper end
player.fudgeSpawnLocation(worldserver1); // only move to spawn on first login, otherwise, stay where you are....
}
// Paper end
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 2f189712675b988a5bbb796abf54740470d836f4..186e9541031eb2daaf479d7d14782e917b3e16e5 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -2312,27 +2312,8 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
}
// CraftBukkit end
- // CraftBukkit start - Reset world
- if (this instanceof ServerPlayer) {
- Server server = Bukkit.getServer();
- org.bukkit.World bworld = null;
-
- // TODO: Remove World related checks, replaced with WorldUID
- String worldName = nbt.getString("world");
-
- if (nbt.contains("WorldUUIDMost") && nbt.contains("WorldUUIDLeast")) {
- UUID uid = new UUID(nbt.getLong("WorldUUIDMost"), nbt.getLong("WorldUUIDLeast"));
- bworld = server.getWorld(uid);
- } else {
- bworld = server.getWorld(worldName);
- }
-
- if (bworld == null) {
- bworld = ((org.bukkit.craftbukkit.CraftServer) server).getServer().getLevel(Level.OVERWORLD).getWorld();
- }
-
- ((ServerPlayer) this).setLevel(bworld == null ? null : ((CraftWorld) bworld).getHandle());
- }
+ // CraftBukkit start
+ // Paper - move world parsing/loading to PlayerList#placeNewPlayer
this.getBukkitEntity().readBukkitValues(nbt);
if (nbt.contains("Bukkit.invisible")) {
boolean bukkitInvisible = nbt.getBoolean("Bukkit.invisible");