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 Co-authored-by: Jake Potrebic diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java index 5390ce62ec8afd24d2e028ea04d2ef3029a125f9..6f587c4bb4704d93552ba61335d87b1852fc169c 100644 --- a/src/main/java/net/minecraft/server/players/PlayerList.java +++ b/src/main/java/net/minecraft/server/players/PlayerList.java @@ -197,6 +197,7 @@ public abstract class PlayerList { } Optional optional = this.load(player); // CraftBukkit - decompile error + ResourceKey resourcekey = null; // Paper // CraftBukkit start - Better rename detection if (optional.isPresent()) { CompoundTag nbttagcompound = optional.get(); @@ -206,19 +207,47 @@ public abstract class PlayerList { } } // CraftBukkit end - ResourceKey resourcekey = (ResourceKey) optional.flatMap((nbttagcompound) -> { + // 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 (optional.isPresent()) { + // 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 (optional.get().contains("WorldUUIDMost") && optional.get().contains("WorldUUIDLeast")) { + bWorld = org.bukkit.Bukkit.getServer().getWorld(new UUID(optional.get().getLong("WorldUUIDMost"), optional.get().getLong("WorldUUIDLeast"))); + } else if (optional.get().contains("world", net.minecraft.nbt.Tag.TAG_STRING)) { // Paper - legacy bukkit world name + bWorld = org.bukkit.Bukkit.getServer().getWorld(optional.get().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[0] = 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 + resourcekey = optional.flatMap((nbttagcompound) -> { + // Paper end DataResult> dataresult = DimensionType.parseLegacy(new Dynamic(NbtOps.INSTANCE, nbttagcompound.get("Dimension"))); // CraftBukkit - decompile error Logger logger = PlayerList.LOGGER; Objects.requireNonNull(logger); - return 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> result = dataresult.resultOrPartial(logger::error); + invalidPlayerWorld[0] = result.isEmpty(); + return result; + }).orElse(Level.OVERWORLD); // Paper - revert to vanilla default main world, this isn't an "invalid world" since no player data existed + } + // Paper end ServerLevel worldserver = this.server.getLevel(resourcekey); ServerLevel worldserver1; if (worldserver == null) { PlayerList.LOGGER.warn("Unknown respawn dimension {}, defaulting to overworld", resourcekey); worldserver1 = this.server.overworld(); + invalidPlayerWorld[0] = true; // Paper - reset to main world if no world with parsed value is found } else { worldserver1 = worldserver; } @@ -226,6 +255,10 @@ public abstract class PlayerList { // Paper start - Entity#getEntitySpawnReason if (optional.isEmpty()) { 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 (optional.isEmpty() || invalidPlayerWorld[0]) { + // Paper end - reset to main world spawn if first spawn or invalid world player.moveTo(player.adjustSpawnLocation(worldserver1, worldserver1.getSharedSpawnPos()).getBottomCenter(), 0.0F, 0.0F); } // Paper end - Entity#getEntitySpawnReason diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java index 94242c19740ae6ab2c86e3949bab6cee631b938f..d80fd4e2f41583f83c9527ccf4ce80afe851276a 100644 --- a/src/main/java/net/minecraft/world/entity/Entity.java +++ b/src/main/java/net/minecraft/world/entity/Entity.java @@ -2385,27 +2385,8 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess } // 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");