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 ed0ffff1cfc25f66e1947e40008c6c7259b17019..51426da5f3e7b9f8631880a04cef0a58b00233df 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 d890331b9bd8c7b29efb21454af34a0b246b1674..2ce2926f4e3a79a1a329cdd684852970f6f104f2 100644 --- a/src/main/java/net/minecraft/world/entity/Entity.java +++ b/src/main/java/net/minecraft/world/entity/Entity.java @@ -2387,27 +2387,8 @@ 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");