PaperMC/patches/server/0588-Add-Raw-Byte-Entity-Serialization.patch
Spottedleaf 8c5b837e05 Rework async chunk api implementation
Firstly, the old methods all routed to the CompletableFuture method.
However, the CF method could not guarantee that if the caller
was off-main that the future would be "completed" on-main. Since
the callback methods used the CF one, this meant that the callback
methods did not guarantee that the callbacks were to be called on
the main thread.

Now, all methods route to getChunkAtAsync(x, z, gen, urgent, cb)
so that the methods with the callback are guaranteed to invoke
the callback on the main thread. The CF behavior remains unchanged;
it may still appear to complete on main if invoked off-main.

Secondly, remove the scheduleOnMain invocation in the async
chunk completion. This unnecessarily delays the callback
by 1 tick.

Thirdly, add getChunksAtAsync(minX, minZ, maxX, maxZ, ...) which
will load chunks within an area. This method is provided as a helper
as keeping all chunks loaded within an area can be complicated to
implement for plugins (due to the lacking ticket API), and is
already implemented internally anyways.

Fourthly, remove the ticket addition that occured with getChunkAt
and getChunkAtAsync. The ticket addition may delay the unloading
of the chunk unnecessarily. It also fixes a very rare timing bug
where the future/callback would be completed after the chunk
unloads.
2024-11-18 23:00:59 -08:00

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Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Mariell Hoversholm <proximyst@proximyst.com>
Date: Sun, 24 Oct 2021 16:20:31 -0400
Subject: [PATCH] Add Raw Byte Entity Serialization
== AT ==
public net.minecraft.world.entity.Entity setLevel(Lnet/minecraft/world/level/Level;)V
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 736569ea22a8b257fca6e4b9326f73ca8fbc803e..38147960aed55bb60b427d73739d8ec0b5b8b863 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -2261,6 +2261,15 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
}
}
+ // Paper start - Entity serialization api
+ public boolean serializeEntity(CompoundTag compound) {
+ List<Entity> pass = new java.util.ArrayList<>(this.getPassengers());
+ this.passengers = ImmutableList.of();
+ boolean result = save(compound);
+ this.passengers = ImmutableList.copyOf(pass);
+ return result;
+ }
+ // Paper end - Entity serialization api
public boolean save(CompoundTag nbt) {
return this.isPassenger() ? false : this.saveAsPassenger(nbt);
}
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
index 888a75423ac90ca85308eeb6d67bac5348bf31e0..b13c947d2cfe085017b30cb0f8340dd64f338914 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
@@ -1083,6 +1083,18 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
}
// Paper end - tracked players API
+ // Paper start - raw entity serialization API
+ @Override
+ public boolean spawnAt(Location location, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason reason) {
+ Preconditions.checkNotNull(location, "location cannot be null");
+ Preconditions.checkNotNull(reason, "reason cannot be null");
+ this.entity.setLevel(((CraftWorld) location.getWorld()).getHandle());
+ this.entity.setPos(location.getX(), location.getY(), location.getZ());
+ this.entity.setRot(location.getYaw(), location.getPitch());
+ return !this.entity.valid && this.entity.level().addFreshEntity(this.entity, reason);
+ }
+ // Paper end - raw entity serialization API
+
// Paper start - missing entity api
@Override
public boolean isInvisible() { // Paper - moved up from LivingEntity
diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
index 1dd9a5cc45d5073adb150abdcbe2025e6ed2c315..2a3dc48aa50b41ede0e1a0e280314624961967f2 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
@@ -510,7 +510,33 @@ public final class CraftMagicNumbers implements UnsafeValues {
return CraftItemStack.asCraftMirror(net.minecraft.world.item.ItemStack.parse(MinecraftServer.getServer().registryAccess(), compound).orElseThrow());
}
- private byte[] serializeNbtToBytes(CompoundTag compound) {
+ @Override
+ public byte[] serializeEntity(org.bukkit.entity.Entity entity) {
+ Preconditions.checkNotNull(entity, "null cannot be serialized");
+ Preconditions.checkArgument(entity instanceof org.bukkit.craftbukkit.entity.CraftEntity, "only CraftEntities can be serialized");
+
+ net.minecraft.nbt.CompoundTag compound = new net.minecraft.nbt.CompoundTag();
+ ((org.bukkit.craftbukkit.entity.CraftEntity) entity).getHandle().serializeEntity(compound);
+ return serializeNbtToBytes(compound);
+ }
+
+ @Override
+ public org.bukkit.entity.Entity deserializeEntity(byte[] data, org.bukkit.World world, boolean preserveUUID) {
+ Preconditions.checkNotNull(data, "null cannot be deserialized");
+ Preconditions.checkArgument(data.length > 0, "cannot deserialize nothing");
+
+ net.minecraft.nbt.CompoundTag compound = deserializeNbtFromBytes(data);
+ int dataVersion = compound.getInt("DataVersion");
+ compound = (net.minecraft.nbt.CompoundTag) MinecraftServer.getServer().fixerUpper.update(References.ENTITY, new Dynamic<>(NbtOps.INSTANCE, compound), dataVersion, this.getDataVersion()).getValue();
+ if (!preserveUUID) {
+ // Generate a new UUID so we don't have to worry about deserializing the same entity twice
+ compound.remove("UUID");
+ }
+ return net.minecraft.world.entity.EntityType.create(compound, ((org.bukkit.craftbukkit.CraftWorld) world).getHandle(), net.minecraft.world.entity.EntitySpawnReason.LOAD)
+ .orElseThrow(() -> new IllegalArgumentException("An ID was not found for the data. Did you downgrade?")).getBukkitEntity();
+ }
+
+ private byte[] serializeNbtToBytes(net.minecraft.nbt.CompoundTag compound) {
compound.putInt("DataVersion", getDataVersion());
java.io.ByteArrayOutputStream outputStream = new java.io.ByteArrayOutputStream();
try {