diff --git a/src/main/java/com/minelittlepony/unicopia/ability/ChangelingDisguiseAbility.java b/src/main/java/com/minelittlepony/unicopia/ability/ChangelingDisguiseAbility.java
index dd6af2cc..b8c88516 100644
--- a/src/main/java/com/minelittlepony/unicopia/ability/ChangelingDisguiseAbility.java
+++ b/src/main/java/com/minelittlepony/unicopia/ability/ChangelingDisguiseAbility.java
@@ -64,7 +64,6 @@ public class ChangelingDisguiseAbility extends ChangelingFeedAbility {
         }
 
         player.calculateDimensions();
-        iplayer.setDirty();
         return true;
     }
 
diff --git a/src/main/java/com/minelittlepony/unicopia/ability/ToggleFlightAbility.java b/src/main/java/com/minelittlepony/unicopia/ability/ToggleFlightAbility.java
index caa3c701..66aa0050 100644
--- a/src/main/java/com/minelittlepony/unicopia/ability/ToggleFlightAbility.java
+++ b/src/main/java/com/minelittlepony/unicopia/ability/ToggleFlightAbility.java
@@ -65,7 +65,6 @@ public class ToggleFlightAbility implements Ability<Hit> {
         } else {
             player.getPhysics().cancelFlight(true);
         }
-        player.setDirty();
         player.setAnimation(Animation.SPREAD_WINGS, Animation.Recipient.ANYONE);
         return true;
     }
diff --git a/src/main/java/com/minelittlepony/unicopia/command/GravityCommand.java b/src/main/java/com/minelittlepony/unicopia/command/GravityCommand.java
index c5249dcb..a97272e9 100644
--- a/src/main/java/com/minelittlepony/unicopia/command/GravityCommand.java
+++ b/src/main/java/com/minelittlepony/unicopia/command/GravityCommand.java
@@ -48,7 +48,6 @@ class GravityCommand {
     static int set(ServerCommandSource source, Collection<? extends Entity> targets, float gravity, boolean isSelf) {
         List<Entity> affected = targets.stream().map(Living::living).filter(Objects::nonNull).map(l -> {
             l.getPhysics().setBaseGravityModifier(gravity);
-            l.setDirty();
             if (l.asEntity() instanceof PlayerEntity player) {
                 if (source.getEntity() == player) {
                     player.sendMessage(Text.translatable("commands.gravity.set.self", gravity));
diff --git a/src/main/java/com/minelittlepony/unicopia/entity/Living.java b/src/main/java/com/minelittlepony/unicopia/entity/Living.java
index 0ea9bc46..f5c82baf 100644
--- a/src/main/java/com/minelittlepony/unicopia/entity/Living.java
+++ b/src/main/java/com/minelittlepony/unicopia/entity/Living.java
@@ -31,7 +31,6 @@ import com.minelittlepony.unicopia.input.Interactable;
 import com.minelittlepony.unicopia.item.GlassesItem;
 import com.minelittlepony.unicopia.item.UItems;
 import com.minelittlepony.unicopia.item.enchantment.UEnchantments;
-import com.minelittlepony.unicopia.network.datasync.Transmittable;
 import com.minelittlepony.unicopia.network.track.DataTracker;
 import com.minelittlepony.unicopia.network.track.DataTrackerManager;
 import com.minelittlepony.unicopia.network.track.Trackable;
@@ -74,7 +73,7 @@ import net.minecraft.util.math.Direction;
 import net.minecraft.util.math.MathHelper;
 import net.minecraft.util.math.Vec3d;
 
-public abstract class Living<T extends LivingEntity> implements Equine<T>, Caster<T>, Transmittable {
+public abstract class Living<T extends LivingEntity> implements Equine<T>, Caster<T> {
     protected final T entity;
 
     private final SpellInventory spells;
@@ -479,9 +478,6 @@ public abstract class Living<T extends LivingEntity> implements Equine<T>, Caste
         return MathHelper.clamp(level / (float)maxLevel, 0, 1);
     }
 
-    @Override
-    public void setDirty() {}
-
     @Override
     public void toNBT(NbtCompound compound) {
         enchants.toNBT(compound);
@@ -498,12 +494,10 @@ public abstract class Living<T extends LivingEntity> implements Equine<T>, Caste
         fromSynchronizedNbt(compound);
     }
 
-    @Override
     public void toSyncronisedNbt(NbtCompound compound) {
         compound.put("armour", armour.toNBT());
     }
 
-    @Override
     public void fromSynchronizedNbt(NbtCompound compound) {
         armour.fromNBT(compound.getCompound("armour"));
     }
diff --git a/src/main/java/com/minelittlepony/unicopia/entity/player/PlayerPhysics.java b/src/main/java/com/minelittlepony/unicopia/entity/player/PlayerPhysics.java
index 2721193c..836ce227 100644
--- a/src/main/java/com/minelittlepony/unicopia/entity/player/PlayerPhysics.java
+++ b/src/main/java/com/minelittlepony/unicopia/entity/player/PlayerPhysics.java
@@ -232,9 +232,7 @@ public class PlayerPhysics extends EntityPhysics<PlayerEntity> implements Tickab
             entity.calculateDimensions();
         }
 
-        if (!pony.isClient()) {
-            pony.setDirty();
-        }
+        pony.setDirty();
     }
 
     public double getHorizontalMotion() {
@@ -621,6 +619,7 @@ public class PlayerPhysics extends EntityPhysics<PlayerEntity> implements Tickab
         thrustScale = 0;
         descentRate = 0;
         entity.calculateDimensions();
+        pony.setDirty();
 
         if (entity.isOnGround() || !force) {
             //BlockState steppingState = pony.asEntity().getSteppingBlockState();
diff --git a/src/main/java/com/minelittlepony/unicopia/entity/player/Pony.java b/src/main/java/com/minelittlepony/unicopia/entity/player/Pony.java
index b5f18c77..c876668e 100644
--- a/src/main/java/com/minelittlepony/unicopia/entity/player/Pony.java
+++ b/src/main/java/com/minelittlepony/unicopia/entity/player/Pony.java
@@ -175,6 +175,7 @@ public class Pony extends Living<PlayerEntity> implements Copyable<Pony>, Update
             animation.animation().getSound().ifPresent(sound -> {
                 playSound(sound, sound == USounds.ENTITY_PLAYER_WOLOLO ? 0.1F : 0.9F, 1);
             });
+            setDirty();
         }
     }
 
@@ -314,7 +315,7 @@ public class Pony extends Living<PlayerEntity> implements Copyable<Pony>, Update
         return getSpecies().getAffinity();
     }
 
-    @Override
+    @Deprecated
     public void setDirty() {
         dirty = true;
     }
diff --git a/src/main/java/com/minelittlepony/unicopia/network/MsgPlayerCapabilities.java b/src/main/java/com/minelittlepony/unicopia/network/MsgPlayerCapabilities.java
index 5c390078..79cfab5b 100644
--- a/src/main/java/com/minelittlepony/unicopia/network/MsgPlayerCapabilities.java
+++ b/src/main/java/com/minelittlepony/unicopia/network/MsgPlayerCapabilities.java
@@ -1,17 +1,12 @@
 package com.minelittlepony.unicopia.network;
 
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
 import com.minelittlepony.unicopia.entity.player.Pony;
+import com.minelittlepony.unicopia.util.serialization.PacketCodec;
 import com.sollace.fabwork.api.packets.HandledPacket;
 
-import io.netty.buffer.ByteBufInputStream;
-import io.netty.buffer.ByteBufOutputStream;
 import net.minecraft.network.PacketByteBuf;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.nbt.NbtCompound;
-import net.minecraft.nbt.NbtIo;
 
 /**
  * Sent to the client to update various data pertaining to a particular player.
@@ -26,11 +21,7 @@ public class MsgPlayerCapabilities implements HandledPacket<PlayerEntity> {
 
     MsgPlayerCapabilities(PacketByteBuf buffer) {
         playerId = buffer.readInt();
-        try (InputStream in = new ByteBufInputStream(buffer)) {
-            compoundTag = NbtIo.readCompressed(in);
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        }
+        compoundTag = PacketCodec.COMPRESSED_NBT.read(buffer);
     }
 
     public MsgPlayerCapabilities(Pony player) {
@@ -42,10 +33,7 @@ public class MsgPlayerCapabilities implements HandledPacket<PlayerEntity> {
     @Override
     public void toBuffer(PacketByteBuf buffer) {
         buffer.writeInt(playerId);
-        try (OutputStream out = new ByteBufOutputStream(buffer)) {
-            NbtIo.writeCompressed(compoundTag, out);
-        } catch (IOException e) {
-        }
+        PacketCodec.COMPRESSED_NBT.write(buffer, compoundTag);
     }
 
     @Override
diff --git a/src/main/java/com/minelittlepony/unicopia/network/datasync/Transmittable.java b/src/main/java/com/minelittlepony/unicopia/network/datasync/Transmittable.java
deleted file mode 100644
index 8895bd77..00000000
--- a/src/main/java/com/minelittlepony/unicopia/network/datasync/Transmittable.java
+++ /dev/null
@@ -1,11 +0,0 @@
-package com.minelittlepony.unicopia.network.datasync;
-
-import net.minecraft.nbt.NbtCompound;
-
-public interface Transmittable {
-    void setDirty();
-
-    void toSyncronisedNbt(NbtCompound compound);
-
-    void fromSynchronizedNbt(NbtCompound compound);
-}
diff --git a/src/main/java/com/minelittlepony/unicopia/network/track/DataTracker.java b/src/main/java/com/minelittlepony/unicopia/network/track/DataTracker.java
index 517dccd9..22e9335d 100644
--- a/src/main/java/com/minelittlepony/unicopia/network/track/DataTracker.java
+++ b/src/main/java/com/minelittlepony/unicopia/network/track/DataTracker.java
@@ -3,7 +3,7 @@ package com.minelittlepony.unicopia.network.track;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
-import org.jetbrains.annotations.Nullable;
+import java.util.Optional;
 
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
@@ -75,30 +75,31 @@ public class DataTracker {
         }
     }
 
-    synchronized void getInitialPairs(List<MsgTrackedValues.TrackerEntries> output) {
+    synchronized Optional<MsgTrackedValues.TrackerEntries> getInitialPairs() {
+        initial = false;
+        dirtyIndices = new IntOpenHashSet();
         updateTrackables();
-        output.add(new MsgTrackedValues.TrackerEntries(id, true, codecs));
+        return Optional.of(new MsgTrackedValues.TrackerEntries(id, true, codecs));
     }
 
-    @Nullable
-    synchronized void getDirtyPairs(List<MsgTrackedValues.TrackerEntries> output) {
+    synchronized Optional<MsgTrackedValues.TrackerEntries> getDirtyPairs() {
         if (initial) {
-            initial = false;
-            dirtyIndices = new IntOpenHashSet();
-            getInitialPairs(output);
-        } else {
-            updateTrackables();
-
-            if (!dirtyIndices.isEmpty()) {
-                IntSet toSend = dirtyIndices;
-                dirtyIndices = new IntOpenHashSet();
-                List<Pair<?>> pairs = new ArrayList<>();
-                for (int i : toSend) {
-                    pairs.add(codecs.get(i));
-                }
-                output.add(new MsgTrackedValues.TrackerEntries(id, false, pairs));
-            }
+            return getInitialPairs();
         }
+
+        updateTrackables();
+
+        if (dirtyIndices.isEmpty()) {
+            return Optional.empty();
+        }
+
+        IntSet toSend = dirtyIndices;
+        dirtyIndices = new IntOpenHashSet();
+        List<Pair<?>> pairs = new ArrayList<>();
+        for (int i : toSend) {
+            pairs.add(codecs.get(i));
+        }
+        return Optional.of(new MsgTrackedValues.TrackerEntries(id, false, pairs));
     }
 
     synchronized void load(MsgTrackedValues.TrackerEntries values) {
diff --git a/src/main/java/com/minelittlepony/unicopia/network/track/DataTrackerManager.java b/src/main/java/com/minelittlepony/unicopia/network/track/DataTrackerManager.java
index f2058a78..3b199346 100644
--- a/src/main/java/com/minelittlepony/unicopia/network/track/DataTrackerManager.java
+++ b/src/main/java/com/minelittlepony/unicopia/network/track/DataTrackerManager.java
@@ -1,7 +1,7 @@
 package com.minelittlepony.unicopia.network.track;
 
-import java.util.ArrayList;
 import java.util.List;
+import java.util.Optional;
 import java.util.function.Consumer;
 import java.util.function.Supplier;
 
@@ -19,7 +19,6 @@ public class DataTrackerManager {
     final boolean isClient;
     private final List<DataTracker> trackers = new ObjectArrayList<>();
     private final List<ObjectTracker<?>> objectTrackers = new ObjectArrayList<>();
-
     private final List<PacketEmitter> packetEmitters = new ObjectArrayList<>();
 
     @Nullable
@@ -44,12 +43,32 @@ public class DataTrackerManager {
     public synchronized DataTracker checkoutTracker() {
         DataTracker tracker = new DataTracker(this, trackers.size());
         trackers.add(tracker);
+        packetEmitters.add((sender, initial) -> {
+            var update = initial ? tracker.getInitialPairs() : tracker.getDirtyPairs();
+            if (update.isPresent()) {
+                sender.accept(Channel.SERVER_TRACKED_ENTITY_DATA.toPacket(new MsgTrackedValues(
+                        entity.getId(),
+                        Optional.empty(),
+                        update
+                )));
+            }
+        });
         return tracker;
     }
 
     public synchronized <T extends TrackableObject> ObjectTracker<T> checkoutTracker(Supplier<T> objFunction) {
         ObjectTracker<T> tracker = new ObjectTracker<>(objectTrackers.size(), objFunction);
         objectTrackers.add(tracker);
+        packetEmitters.add((sender, initial) -> {
+            var update = initial ? tracker.getInitialPairs() : tracker.getDirtyPairs();
+            if (update.isPresent()) {
+                sender.accept(Channel.SERVER_TRACKED_ENTITY_DATA.toPacket(new MsgTrackedValues(
+                        entity.getId(),
+                        update,
+                        Optional.empty()
+                )));
+            }
+        });
         return tracker;
     }
 
@@ -58,25 +77,6 @@ public class DataTrackerManager {
             for (var emitter : packetEmitters) {
                 emitter.sendPackets(sender, false);
             }
-
-            if (trackers.isEmpty() && objectTrackers.isEmpty()) {
-                return;
-            }
-
-            List<MsgTrackedValues.TrackerEntries> toTransmit = new ArrayList<>();
-            List<MsgTrackedValues.TrackerObjects> objToTransmit = new ArrayList<>();
-
-            for (var entry : trackers) entry.getDirtyPairs(toTransmit);
-            for (var entry : objectTrackers) entry.getDirtyPairs(objToTransmit);
-
-            if (!toTransmit.isEmpty() || !objToTransmit.isEmpty()) {
-                MsgTrackedValues packet = new MsgTrackedValues(
-                        entity.getId(),
-                        objToTransmit,
-                        toTransmit
-                );
-                sender.accept(Channel.SERVER_TRACKED_ENTITY_DATA.toPacket(packet));
-            }
         }
     }
 
@@ -86,41 +86,22 @@ public class DataTrackerManager {
             for (var emitter : packetEmitters) {
                 emitter.sendPackets((Consumer)sender, true);
             }
-
-            if (trackers.isEmpty() && objectTrackers.isEmpty()) {
-                return;
-            }
-
-            List<MsgTrackedValues.TrackerEntries> toTransmit = new ArrayList<>();
-            List<MsgTrackedValues.TrackerObjects> objToTransmit = new ArrayList<>();
-
-            for (var entry : trackers) entry.getInitialPairs(toTransmit);
-            for (var entry : objectTrackers) entry.getInitialPairs(objToTransmit);
-
-            if (!toTransmit.isEmpty() || !objToTransmit.isEmpty()) {
-                MsgTrackedValues packet = new MsgTrackedValues(
-                        entity.getId(),
-                        objToTransmit,
-                        toTransmit
-                );
-                sender.accept(Channel.SERVER_TRACKED_ENTITY_DATA.toPacket(packet));
-            }
         }
     }
 
     synchronized void load(MsgTrackedValues packet) {
-        for (var update : packet.updatedTrackers()) {
+        packet.updatedTrackers().ifPresent(update -> {
             DataTracker tracker = trackers.get(update.id());
             if (tracker != null) {
                 tracker.load(update);
             }
-        }
-        for (var update : packet.updatedObjects()) {
+        });
+        packet.updatedObjects().ifPresent(update -> {
             ObjectTracker<?> tracker = objectTrackers.get(update.id());
             if (tracker != null) {
                 tracker.load(update);
             }
-        }
+        });
     }
 
     public interface PacketEmitter {
diff --git a/src/main/java/com/minelittlepony/unicopia/network/track/MsgTrackedValues.java b/src/main/java/com/minelittlepony/unicopia/network/track/MsgTrackedValues.java
index 2a2800fb..a8483855 100644
--- a/src/main/java/com/minelittlepony/unicopia/network/track/MsgTrackedValues.java
+++ b/src/main/java/com/minelittlepony/unicopia/network/track/MsgTrackedValues.java
@@ -5,9 +5,11 @@ import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.Set;
 import java.util.UUID;
 
+import com.minelittlepony.unicopia.util.serialization.PacketCodec;
 import com.sollace.fabwork.api.packets.HandledPacket;
 
 import net.minecraft.entity.Entity;
@@ -17,22 +19,22 @@ import net.minecraft.network.PacketByteBuf;
 
 public record MsgTrackedValues(
         int owner,
-        List<TrackerObjects> updatedObjects,
-        List<TrackerEntries> updatedTrackers
+        Optional<TrackerObjects> updatedObjects,
+        Optional<TrackerEntries> updatedTrackers
 ) implements HandledPacket<PlayerEntity> {
     public MsgTrackedValues(PacketByteBuf buffer) {
         this(
             buffer.readInt(),
-            buffer.readCollection(ArrayList::new, TrackerObjects::new),
-            buffer.readCollection(ArrayList::new, TrackerEntries::new)
+            buffer.readOptional(TrackerObjects::new),
+            buffer.readOptional(TrackerEntries::new)
         );
     }
 
     @Override
     public void toBuffer(PacketByteBuf buffer) {
         buffer.writeInt(owner);
-        buffer.writeCollection(updatedObjects, (buf, obj) -> obj.write(buf));
-        buffer.writeCollection(updatedTrackers, (buf, tracker) -> tracker.write(buf));
+        buffer.writeOptional(updatedObjects, (buf, obj) -> obj.write(buf));
+        buffer.writeOptional(updatedTrackers, (buf, tracker) -> tracker.write(buf));
     }
 
     @Override
@@ -48,14 +50,15 @@ public record MsgTrackedValues(
             this(
                 buffer.readInt(),
                 buffer.readCollection(HashSet::new, PacketByteBuf::readUuid),
-                buffer.readMap(HashMap::new, PacketByteBuf::readUuid, PacketByteBuf::readNbt)
+                buffer.readMap(HashMap::new, PacketByteBuf::readUuid, PacketCodec.NBT::read)
             );
+
         }
 
         public void write(PacketByteBuf buffer) {
             buffer.writeInt(id);
             buffer.writeCollection(removedValues, PacketByteBuf::writeUuid);
-            buffer.writeMap(values, PacketByteBuf::writeUuid, PacketByteBuf::writeNbt);
+            buffer.writeMap(values, PacketByteBuf::writeUuid, PacketCodec.NBT::write);
         }
     }
 
diff --git a/src/main/java/com/minelittlepony/unicopia/network/track/ObjectTracker.java b/src/main/java/com/minelittlepony/unicopia/network/track/ObjectTracker.java
index b6e3ec57..6a1e6005 100644
--- a/src/main/java/com/minelittlepony/unicopia/network/track/ObjectTracker.java
+++ b/src/main/java/com/minelittlepony/unicopia/network/track/ObjectTracker.java
@@ -3,8 +3,8 @@ package com.minelittlepony.unicopia.network.track;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
-import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.Set;
 import java.util.UUID;
 import java.util.function.Supplier;
@@ -73,18 +73,20 @@ public class ObjectTracker<T extends TrackableObject> implements NbtSerialisable
         quickAccess = Map.copyOf(trackedObjects);
     }
 
-    synchronized void getInitialPairs(List<MsgTrackedValues.TrackerObjects> output) {
-        if (!trackedObjects.isEmpty()) {
-            Map<UUID, NbtCompound> trackableCompounds = new HashMap<>();
-            quickAccess.entrySet().forEach(object -> {
-                trackableCompounds.put(object.getKey(), object.getValue().toTrackedNbt());
-            });
-
-            output.add(new MsgTrackedValues.TrackerObjects(id, Set.of(), trackableCompounds));
+    synchronized Optional<MsgTrackedValues.TrackerObjects> getInitialPairs() {
+        if (trackedObjects.isEmpty()) {
+            return Optional.empty();
         }
+
+        Map<UUID, NbtCompound> trackableCompounds = new HashMap<>();
+        quickAccess.entrySet().forEach(object -> {
+            trackableCompounds.put(object.getKey(), object.getValue().toTrackedNbt());
+        });
+
+        return Optional.of(new MsgTrackedValues.TrackerObjects(id, Set.of(), trackableCompounds));
     }
 
-    synchronized void getDirtyPairs(List<MsgTrackedValues.TrackerObjects> output) {
+    synchronized Optional<MsgTrackedValues.TrackerObjects> getDirtyPairs() {
         if (!trackedObjects.isEmpty()) {
             Map<UUID, NbtCompound> trackableCompounds = new HashMap<>();
             Set<UUID> removedTrackableObjects = new HashSet<>();
@@ -100,9 +102,11 @@ public class ObjectTracker<T extends TrackableObject> implements NbtSerialisable
             quickAccess = Map.copyOf(trackedObjects);
 
             if (!trackableCompounds.isEmpty() || !removedTrackableObjects.isEmpty()) {
-                output.add(new MsgTrackedValues.TrackerObjects(id, removedTrackableObjects, trackableCompounds));
+                return Optional.of(new MsgTrackedValues.TrackerObjects(id, removedTrackableObjects, trackableCompounds));
             }
         }
+
+        return Optional.empty();
     }
 
     synchronized void load(MsgTrackedValues.TrackerObjects objects) {
diff --git a/src/main/java/com/minelittlepony/unicopia/network/track/TrackableDataType.java b/src/main/java/com/minelittlepony/unicopia/network/track/TrackableDataType.java
index 620edcca..e106081f 100644
--- a/src/main/java/com/minelittlepony/unicopia/network/track/TrackableDataType.java
+++ b/src/main/java/com/minelittlepony/unicopia/network/track/TrackableDataType.java
@@ -22,6 +22,7 @@ public record TrackableDataType<T>(int id, PacketCodec<T> codec) {
     public static final TrackableDataType<Boolean> BOOLEAN = of(new Identifier("boolean"), PacketCodec.BOOLEAN);
     public static final TrackableDataType<UUID> UUID = of(new Identifier("uuid"), PacketCodec.UUID);
     public static final TrackableDataType<NbtCompound> NBT = of(new Identifier("nbt"), PacketCodec.NBT);
+    public static final TrackableDataType<NbtCompound> COMPRESSED_NBT = of(new Identifier("compressed_nbt"), PacketCodec.COMPRESSED_NBT);
 
     public static final TrackableDataType<Optional<BlockPos>> OPTIONAL_POS = of(new Identifier("optional_pos"), PacketCodec.OPTIONAL_POS);
     public static final TrackableDataType<Race> RACE = TrackableDataType.of(Unicopia.id("race"), PacketCodec.ofRegistry(Race.REGISTRY));
diff --git a/src/main/java/com/minelittlepony/unicopia/util/serialization/PacketCodec.java b/src/main/java/com/minelittlepony/unicopia/util/serialization/PacketCodec.java
index a20a6b51..b4674ba1 100644
--- a/src/main/java/com/minelittlepony/unicopia/util/serialization/PacketCodec.java
+++ b/src/main/java/com/minelittlepony/unicopia/util/serialization/PacketCodec.java
@@ -1,5 +1,8 @@
 package com.minelittlepony.unicopia.util.serialization;
 
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
 import java.util.Optional;
 import java.util.UUID;
 import java.util.function.BiConsumer;
@@ -7,7 +10,10 @@ import java.util.function.BiFunction;
 import java.util.function.Function;
 import java.util.function.Supplier;
 
+import io.netty.buffer.ByteBufInputStream;
+import io.netty.buffer.ByteBufOutputStream;
 import net.minecraft.nbt.NbtCompound;
+import net.minecraft.nbt.NbtIo;
 import net.minecraft.network.PacketByteBuf;
 import net.minecraft.registry.Registry;
 import net.minecraft.util.Identifier;
@@ -27,6 +33,18 @@ public record PacketCodec<T>(PacketByteBuf.PacketReader<T> reader, PacketByteBuf
     public static final PacketCodec<Identifier> IDENTIFIER = STRING.xMap(Identifier::new, Identifier::toString);
 
     public static final PacketCodec<NbtCompound> NBT = new PacketCodec<>(PacketByteBuf::readNbt, PacketByteBuf::writeNbt);
+    public static final PacketCodec<NbtCompound> COMPRESSED_NBT = new PacketCodec<>(buffer -> {
+        try (InputStream in = new ByteBufInputStream(buffer)) {
+            return NbtIo.readCompressed(in);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }, (buffer, nbt) -> {
+        try (OutputStream out = new ByteBufOutputStream(buffer)) {
+            NbtIo.writeCompressed(nbt, out);
+        } catch (IOException e) {
+        }
+    });
 
     public static final PacketCodec<BlockPos> POS = new PacketCodec<>(PacketByteBuf::readBlockPos, PacketByteBuf::writeBlockPos);
     public static final PacketCodec<Optional<BlockPos>> OPTIONAL_POS = POS.asOptional();