From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Mariell Hoversholm 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 8dc2684a748e19e14c3efedf58be5efba99a45b4..11b3a0ece27cb2c01b908a9ac0c3d75f407f5ed0 100644 --- a/src/main/java/net/minecraft/world/entity/Entity.java +++ b/src/main/java/net/minecraft/world/entity/Entity.java @@ -2260,6 +2260,15 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess } } + // Paper start - Entity serialization api + public boolean serializeEntity(CompoundTag compound) { + List 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 0c1c9033646dedcf1d11dee74d6965683adadf0a..1ed01978611cddb2558e441863dadc468bc07c3d 100644 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java @@ -1088,6 +1088,18 @@ 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 31b625779dfe27602ac198259258e64195c1796d..1ab160c3d042be43df3bd19d095534b91c4c2f71 100644 --- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java +++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java @@ -499,7 +499,33 @@ 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 {