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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 7dbbf0884b70acb37c3400364736fa8f6b68c964..5dce3d38ecd7b7639f02f3e1e92f3723f4a42c39 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -2078,6 +2078,15 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
}
}
+ // 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 65ce8ab201e7e36f6d2637e906af325e11e425dd..c819fa8e5b69c23558a89b68f9a5a31e1b233ca3 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
@@ -1058,6 +1058,18 @@ 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 2734f4187a4b92ef461e1f2fdae9139c6f54d8fc..be82e1d52d7026facb20bf07f4b3a394e77ab708 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
@@ -504,6 +504,32 @@ public final class CraftMagicNumbers implements UnsafeValues {
return CraftItemStack.asCraftMirror(net.minecraft.world.item.ItemStack.of(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");
+
+ CompoundTag compound = new 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");
+
+ CompoundTag compound = deserializeNbtFromBytes(data);
+ int dataVersion = compound.getInt("DataVersion");
+ compound = (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())
+ .orElseThrow(() -> new IllegalArgumentException("An ID was not found for the data. Did you downgrade?")).getBukkitEntity();
+ }
+
private byte[] serializeNbtToBytes(CompoundTag compound) {
compound.putInt("DataVersion", getDataVersion());
java.io.ByteArrayOutputStream outputStream = new java.io.ByteArrayOutputStream();
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