PacketEvents 2.9.5 Update

Fixes #1325

.github/workflows/gradle-publish.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Validate gradle wrapper
-        uses: gradle/actions/wrapper-validation@v3
+        uses: gradle/actions/wrapper-validation@v4
 
       - name: Set up JDK 21
         uses: actions/setup-java@v4

.github/workflows/release.yml

@@ -0,0 +1,51 @@
+name: Release
+on:
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    name: Publish Release
+    runs-on: ubuntu-24.04
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Validate gradle wrapper
+        uses: gradle/actions/wrapper-validation@v4
+
+      - name: Setup java 21
+        uses: actions/setup-java@v4
+        with:
+          java-version: 21
+          distribution: temurin
+
+      - name: Prepare gradle
+        run: ./gradlew printVersion --no-daemon
+
+      - name: Extract changelog
+        id: changelog
+        run: |
+          OUTPUT_DELIMITER="$(uuidgen)"
+          echo "changelog<<$OUTPUT_DELIMITER" >> "$GITHUB_OUTPUT"
+          
+          # extract tag name and use it to get changelog section
+          TAG_NAME="v$(./gradlew -q --no-daemon printVersion)"
+          awk -v tag="${TAG_NAME}" '
+            $1 == "!!!!!" && $2 == tag {found=1; next}
+            $1 == "!!!!!" && found {exit}
+            found
+          ' CHANGELOG.md >> "$GITHUB_OUTPUT"
+          
+          # end output
+          echo "$OUTPUT_DELIMITER" >> "$GITHUB_OUTPUT"
+
+      - name: Publish plugin
+        env:
+          GITHUB_API_TOKEN: ${{ github.token }}
+          MODRINTH_API_TOKEN: ${{ secrets.MODRINTH_PUBLISH_TOKEN }}
+          CHANGELOG: ${{ steps.changelog.outputs.changelog }}
+        run: ./gradlew publishMods --no-daemon -PnoDryPublish

CHANGELOG.md

@@ -0,0 +1,294 @@
+!!!!! v2.9.5
+
+# PacketEvents 2.9.5 is out now! 🎉
+
+This update includes critical bug fixes & minor additions to the API.
+
+# Brief Announcement 📢⚠️
+
+### We have our very own website: https://packetevents.com
+
+### Documentation: https://docs.packetevents.com
+
+### JavaDocs: https://javadocs.packetevents.com
+
+## What's Changed (Summary)
+
+* Injector bug fix (for Spigot)
+* WolfVariant issue fixed
+* Chunk Data error fixed
+* NBT tag issues fixed
+* Direction Y/Z axis being swapped fixed
+* Added WrappedBlockState to constructor of WrapperPlayServerBlockChange
+
+**View Full Changelog**: https://github.com/retrooper/packetevents/compare/v2.9.4...v2.9.5
+
+## If you want to support PacketEvents, consider sponsoring us on [GitHub Sponsors](https://github.com/sponsors/retrooper)
+
+## Maven/Gradle Dependency
+
+### **Check out**: https://docs.packetevents.com/getting-started
+
+!!!!! v2.9.4
+
+# PacketEvents 2.9.4 is out now! 🎉
+
+This update includes minor bug fixes & minor additions to the API.
+
+# Brief Announcement 📢⚠️
+
+### We have our very own website: https://packetevents.com
+
+### Documentation: https://docs.packetevents.com
+
+### JavaDocs: https://javadocs.packetevents.com
+
+## What's Changed (Summary)
+
+* Added SpigotConversionUtil#getEntityMetadata to retrieve metadata from a Bukkit entity.
+* Fixed outdated 1.8 Spigot forks from being unable to load on PacketEvents.
+* Fixed WrapperPlayServerWorldBorder for versions lower than 1.12.
+
+**View Full Changelog**: https://github.com/retrooper/packetevents/compare/v2.9.3...v2.9.4
+
+## If you want to support PacketEvents, consider sponsoring us on [GitHub Sponsors](https://github.com/sponsors/retrooper)
+
+## Maven/Gradle Dependency
+
+### **Check out**: https://docs.packetevents.com/getting-started
+
+!!!!! v2.9.3
+
+# PacketEvents 2.9.3 is out now! 🎉
+
+This is an update that adds support for Minecraft 1.21.8 server builds.
+
+# Brief Announcement 📢⚠️
+
+### We have our very own website: https://packetevents.com
+
+### Documentation: https://docs.packetevents.com
+
+### JavaDocs: https://javadocs.packetevents.com
+
+## What's Changed (Summary)
+
+* Added support for 1.21.8 Minecraft server builds.
+
+**View Full Changelog**: https://github.com/retrooper/packetevents/compare/v2.9.2...v2.9.3
+
+## If you want to support PacketEvents, consider sponsoring us on [GitHub Sponsors](https://github.com/sponsors/retrooper)
+
+## Maven/Gradle Dependency
+
+### **Check out**: https://docs.packetevents.com/getting-started
+
+!!!!! v2.9.2
+
+# PacketEvents 2.9.2 is out now! 🎉
+
+This is a patch update that fixes issues with UserLoginEvent (which previously contained null user data) and with importing Adventure serializers.
+
+# Brief Announcement 📢⚠️
+
+### We have our very own website: https://packetevents.com
+
+### Documentation: https://docs.packetevents.com
+
+### JavaDocs: https://javadocs.packetevents.com
+
+## What's Changed (Summary)
+
+* Added support for 1.7.2+ Minecraft protocol (useful for proxies)
+* Fixed UserLoginEvent. It is now (always) triggered by PlayerJoinEvent to prevent User instances from containing null data.
+* Fixed importing Adventure serializers.
+
+**View Full Changelog**: https://github.com/retrooper/packetevents/compare/v2.9.1...v2.9.2
+
+## If you want to support PacketEvents, consider sponsoring us on [GitHub Sponsors](https://github.com/sponsors/retrooper)
+
+## Maven/Gradle Dependency
+
+### **Check out**: https://docs.packetevents.com/getting-started
+
+!!!!! v2.9.1
+
+# PacketEvents 2.9.1 is out now! 🎉
+
+This is a hotfix patch update to fix issues with 2.9.0 release assets. See below for the 2.9.0 changelog.
+
+### New update now supports Minecraft version 1.21.6 & 1.21.7. We suggest that you update, as numerous bugs have been fixed.
+
+# Brief Announcement 📢⚠️
+
+### We have our very own website: https://packetevents.com
+
+### Documentation: https://docs.packetevents.com
+
+### JavaDocs: https://javadocs.packetevents.com
+
+## What's Changed? (Summary)
+
+* Added 1.21.6 support
+* Added 1.21.7 support
+* Bug fixes
+
+**View Full Changelog**: https://github.com/retrooper/packetevents/compare/v2.8.0...v2.9.1
+
+## If you want to support PacketEvents, consider sponsoring us on [GitHub Sponsors](https://github.com/sponsors/retrooper)
+
+## Maven/Gradle Dependency
+
+### **Check out**: https://docs.packetevents.com/getting-started
+
+!!!!! v2.9.0
+
+# PacketEvents 2.9.0 is out now! 🎉
+
+### New update now supports Minecraft version 1.21.6 & 1.21.7. We suggest that you update, as numerous bugs have been fixed.
+
+# Brief Announcement 📢⚠️
+
+### We have our very own website: https://packetevents.com
+
+### Documentation: https://docs.packetevents.com
+
+### JavaDocs: https://javadocs.packetevents.com
+
+## What's Changed? (Summary)
+
+* Added 1.21.6 support
+* Added 1.21.7 support
+* Bug fixes
+
+**View Full Changelog**: https://github.com/retrooper/packetevents/compare/v2.8.0...v2.9.0
+
+## If you want to support PacketEvents, consider sponsoring us on [GitHub Sponsors](https://github.com/sponsors/retrooper)
+
+## Maven/Gradle Dependency
+
+### **Check out**: https://docs.packetevents.com/getting-started
+
+!!!!! v2.8.0
+
+# PacketEvents 2.8.0 is out now! 🎉
+
+### New update now supports Minecraft version 1.21.5. Please update, as numerous bugs have been fixed.
+
+# Brief Announcement 📢⚠️
+
+### We have our very own website: https://packetevents.com
+
+### Documentation: https://docs.packetevents.com
+
+### JavaDocs: https://javadocs.packetevents.com
+
+## What's Changed? (Summary)
+
+* Added 1.21.5 support
+* Various bugs fixed
+
+**View Full Changelog**: https://github.com/retrooper/packetevents/compare/v2.7.0...v2.8.0
+
+## Contributors 🏅
+
+This update wouldn't be possible without these contributors ❤️: @booky10, @Axionize, @Bram1903, @ManInMyVan, @ytnoos,
+@AoElite, @HaHaWTH, @divinepablo, @scienziatopazzo, @bridgelol, @MachineBreaker, @Luuzzi, @Beaness, @Rubenicos, @Loyisa
+
+## New Contributors
+
+* @HaHaWTH made their first contribution in https://github.com/retrooper/packetevents/pull/1097
+* @divinepablo made their first contribution in https://github.com/retrooper/packetevents/pull/1098
+* @scienziatopazzo made their first contribution in https://github.com/retrooper/packetevents/pull/1105
+* @bridgelol made their first contribution in https://github.com/retrooper/packetevents/pull/1199
+* @Luuzzi made their first contribution in https://github.com/retrooper/packetevents/pull/1197
+* @Beaness made their first contribution in https://github.com/retrooper/packetevents/pull/1212
+* @Rubenicos made their first contribution in https://github.com/retrooper/packetevents/pull/1162
+* @Loyisa made their first contribution in https://github.com/retrooper/packetevents/pull/1220
+
+## If you want to support PacketEvents, consider sponsoring us on [GitHub Sponsors](https://github.com/sponsors/retrooper)
+
+## Maven/Gradle Dependency
+
+### **Check out**: https://docs.packetevents.com/getting-started
+
+!!!!! v2.7.0
+
+# PacketEvents v2.7.0 is out now! 🎉
+
+### New update with support of the latest Minecraft version. In addition to that, countless bugs were fixed.
+
+# Brief Announcement 📢⚠️
+
+### We have our own website: https://packetevents.com
+
+### Documentation: https://docs.packetevents.com
+
+### JavaDocs: https://javadocs.packetevents.com
+
+## What's Changed? (Summary)
+
+* Added 1.21.4 support
+* Fix: Potion contents item component for 1.21.2/1.21.3
+* Fix: NPC objects to have unique server team names
+* Add missing ServerVersion#V_1_9_1
+* Validation checks added for window click type
+
+**Full Changelog**: https://github.com/retrooper/packetevents/compare/v2.6.0...v2.7.0
+
+## New Contributors
+
+* @Axionize made their first contribution in https://github.com/retrooper/packetevents/pull/1048
+* @ShreyasAyyengar made their first contribution in https://github.com/retrooper/packetevents/pull/1044
+* @mfnalex made their first contribution in https://github.com/retrooper/packetevents/pull/1076
+
+## Contributors 🏅
+
+This update wouldn't be possible without these contributors ❤️: @booky10, @rafi67000, @ShreyasAyyengar, @AoElite,
+@Tecnio, @Axionize, @mfnalex
+
+### If you want to support PacketEvents, and any upcoming events we plan for the future, consider sponsoring us on [GitHub Sponsors](https://github.com/sponsors/retrooper)
+
+## Maven/Gradle Dependency
+
+### **Check out**: https://docs.packetevents.com/getting-started
+
+!!!!! v2.6.0
+
+# PacketEvents v2.6.0 is out now! 🎉
+
+### New update with support of new platforms & the latest Minecraft version. In addition to that, countless bugs were fixed.
+
+# Brief Announcement 📢⚠️
+
+### We have our own website: https://packetevents.com
+
+### Documentation: https://docs.packetevents.com
+
+### JavaDocs: https://javadocs.packetevents.com
+
+## What's Changed? (Summary)
+
+* 1.21.2 and 1.21.3 Minecraft support
+* Sponge support added
+* Fabric support added (also server-side)
+* Utilizing the proper bStats API
+* Registry element issues fixed
+* Mappings issues fixed
+* AdvancedSlimePaper issues fixed
+* BungeeCord issues fixed
+
+### **Full Changelog**: https://github.com/retrooper/packetevents/compare/v2.5.0...v2.6.0
+
+## Contributors 🏅
+
+This update wouldn't be possible without these contributors ❤️: @booky10, @ManInMyVan, @SamB440, @rafi67000, @Bram1903,
+@AbhigyaKrishna
+
+### If you want to support PacketEvents, and any upcoming events we plan for the future, consider sponsoring us on [GitHub Sponsors](https://github.com/sponsors/retrooper)
+
+## Maven/Gradle Dependency
+
+### **Check out**: https://docs.packetevents.com/getting-started
+
+!!!!!

README.md

@@ -14,8 +14,8 @@
     - [Getting Started](https://docs.packetevents.com/getting-started)
     - [JavaDocs](https://javadocs.packetevents.com)
 - [Releases](https://github.com/retrooper/packetevents/releases/)
-    - [GitHub](https://github.com/retrooper/packetevents/releases/)
     - [Modrinth](https://modrinth.com/plugin/packetevents)
+    - [GitHub](https://github.com/retrooper/packetevents/releases/)
     - [SpigotMC](https://www.spigotmc.org/resources/packetevents-api.80279/)
 - [Development Builds](https://ci.codemc.io/job/retrooper/job/packetevents)
 - [Statistics](https://bstats.org/plugin/bukkit/packetevents/11327)
@@ -28,8 +28,6 @@
 
 <a href="https://www.ej-technologies.com"><img src="https://www.ej-technologies.com/images/product_banners/jprofiler_small.png"><br>
 
-<a href="https://github.com/radstevee"><img src="https://github.com/radstevee.png" width="50px" alt="radstevee"/></a><br>
-
 <h3>Credits</h3>
 
 <i>Here are some projects that we are heavily inspired by, thus we have integrated</i>\

api/src/main/java/com/github/retrooper/packetevents/event/ProtocolPacketEvent.java

@@ -32,6 +32,7 @@ import com.github.retrooper.packetevents.protocol.packettype.PacketTypeCommon;
 import com.github.retrooper.packetevents.protocol.player.ClientVersion;
 import com.github.retrooper.packetevents.protocol.player.User;
 import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -44,7 +45,7 @@ public abstract class ProtocolPacketEvent extends PacketEvent implements PlayerE
     private final Object channel;
     private final ConnectionState connectionState;
     private final User user;
-    private final Object player;
+    private Object player;
     private Object byteBuf;
     private final int packetID;
     private final PacketTypeCommon packetType;
@@ -145,6 +146,12 @@ public abstract class ProtocolPacketEvent extends PacketEvent implements PlayerE
         return (T) player;
     }
 
+    @Deprecated
+    @ApiStatus.Internal
+    public void setPlayer(Object player) {
+        this.player = player;
+    }
+
     /**
      * Gets the connection state this packet has been sent/received in.
      */

api/src/main/java/com/github/retrooper/packetevents/exception/CancelPacketException.java

@@ -2,4 +2,9 @@ package com.github.retrooper.packetevents.exception;
 
 public class CancelPacketException extends RuntimeException {
     public static final CancelPacketException INSTANCE = new CancelPacketException();
+
+    @Override
+    public synchronized Throwable fillInStackTrace() {
+        return this;
+    }
 }

api/src/main/java/com/github/retrooper/packetevents/manager/InternalPacketListener.java

@@ -37,7 +37,9 @@ import com.github.retrooper.packetevents.wrapper.handshaking.client.WrapperHands
 import com.github.retrooper.packetevents.wrapper.login.server.WrapperLoginServerLoginSuccess;
 import com.github.retrooper.packetevents.wrapper.play.server.WrapperPlayServerJoinGame;
 import com.github.retrooper.packetevents.wrapper.play.server.WrapperPlayServerRespawn;
+import org.jetbrains.annotations.ApiStatus;
 
+@ApiStatus.Internal
 public class InternalPacketListener extends PacketListenerAbstract {
 
     public InternalPacketListener() {
@@ -68,7 +70,9 @@ public class InternalPacketListener extends PacketListenerAbstract {
                 PacketEvents.getAPI().getProtocolManager().setChannel(profile.getUUID(), channel);
             }
 
-            PacketEvents.getAPI().getLogManager().debug("Mapped player UUID with their channel.");
+            if (PacketEvents.getAPI().getLogManager().isDebug()) {
+                PacketEvents.getAPI().getLogManager().debug("Mapped player UUID with their channel " + profile.getUUID() + " " + channel);
+            }
 
             // Switch the user's connection state to new state, but the variable event.getConnectionState() remains LOGIN
             // We switch user state immediately to remain in sync with vanilla, allowing you to encode packets immediately
@@ -86,12 +90,11 @@ public class InternalPacketListener extends PacketListenerAbstract {
             WrapperConfigServerRegistryData packet = new WrapperConfigServerRegistryData(event);
 
             if (packet.getElements() != null) { // 1.20.2 to 1.20.5
-                SynchronizedRegistriesHandler.handleRegistry(user, packet.getServerVersion().toClientVersion(),
+                SynchronizedRegistriesHandler.handleRegistry(user, packet,
                         packet.getRegistryKey(), packet.getElements());
             }
             if (packet.getRegistryData() != null) { // since 1.20.5
-                SynchronizedRegistriesHandler.handleLegacyRegistries(user, packet.getServerVersion()
-                        .toClientVersion(), packet.getRegistryData());
+                SynchronizedRegistriesHandler.handleLegacyRegistries(user, packet, packet.getRegistryData());
             }
         }
 
@@ -101,7 +104,7 @@ public class InternalPacketListener extends PacketListenerAbstract {
             user.setEntityId(joinGame.getEntityId());
 
             if (joinGame.getDimensionCodec() != null) { // 1.16 to 1.20.1
-                SynchronizedRegistriesHandler.handleLegacyRegistries(user, joinGame.getServerVersion().toClientVersion(),
+                SynchronizedRegistriesHandler.handleLegacyRegistries(user, joinGame,
                         joinGame.getDimensionCodec());
             }
 

api/src/main/java/com/github/retrooper/packetevents/manager/server/ServerVersion.java

@@ -32,7 +32,8 @@ import org.jetbrains.annotations.NotNull;
  */
 public enum ServerVersion {
     //TODO Rename to MinecraftVersion?
-    V_1_7_10(5),
+    V_1_7_2(4), V_1_7_4(4), V_1_7_5(4),
+    V_1_7_6(5), V_1_7_7(5), V_1_7_8(5), V_1_7_9(5), V_1_7_10(5),
     V_1_8(47), V_1_8_3(47), V_1_8_8(47),
     V_1_9(107), V_1_9_1(108), V_1_9_2(109), V_1_9_4(110),
     //1.10 and 1.10.1 are redundant
@@ -50,7 +51,7 @@ public enum ServerVersion {
     //1.20 and 1.20.1 have the same protocol version. 1.20.3 and 1.20.4 have the same protocol version. 1.20.5 and 1.20.6 have the same protocol version
     V_1_20(763), V_1_20_1(763), V_1_20_2(764), V_1_20_3(765), V_1_20_4(765), V_1_20_5(766), V_1_20_6(766),
     //1.21 and 1.21.1 have the same protocol version. 1.21.2 and 1.21.3 have the same protocol version
-    V_1_21(767), V_1_21_1(767), V_1_21_2(768), V_1_21_3(768), V_1_21_4(769), V_1_21_5(770),
+    V_1_21(767), V_1_21_1(767), V_1_21_2(768), V_1_21_3(768), V_1_21_4(769), V_1_21_5(770), V_1_21_6(771), V_1_21_7(772), V_1_21_8(772),
     //TODO UPDATE Add server version constant
     ERROR(-1, true);
 

api/src/main/java/com/github/retrooper/packetevents/protocol/advancements/Advancement.java

@@ -0,0 +1,144 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.advancements;
+
+import com.github.retrooper.packetevents.manager.server.ServerVersion;
+import com.github.retrooper.packetevents.resources.ResourceLocation;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Collections;
+import java.util.List;
+
+public class Advancement {
+
+    private @Nullable ResourceLocation parent;
+    private @Nullable AdvancementDisplay display;
+    /**
+     * Removed with 1.20.2
+     */
+    private List<String> criteria;
+    private List<List<String>> requirements;
+    /**
+     * Added with 1.20
+     */
+    private boolean sendsTelemetryData;
+
+    public Advancement(
+            @Nullable ResourceLocation parent,
+            @Nullable AdvancementDisplay display,
+            List<List<String>> requirements,
+            boolean sendsTelemetryData
+    ) {
+        this(parent, display, Collections.emptyList(), requirements, sendsTelemetryData);
+    }
+
+    @ApiStatus.Obsolete
+    public Advancement(
+            @Nullable ResourceLocation parent,
+            @Nullable AdvancementDisplay display,
+            List<String> criteria,
+            List<List<String>> requirements,
+            boolean sendsTelemetryData
+    ) {
+        this.parent = parent;
+        this.display = display;
+        this.criteria = criteria;
+        this.requirements = requirements;
+        this.sendsTelemetryData = sendsTelemetryData;
+    }
+
+    public static Advancement read(PacketWrapper<?> wrapper) {
+        ResourceLocation parentId = wrapper.readOptional(ResourceLocation::read);
+        AdvancementDisplay display = wrapper.readOptional(AdvancementDisplay::read);
+        List<String> criteria = wrapper.getServerVersion().isOlderThan(ServerVersion.V_1_20_2)
+                ? wrapper.readList(PacketWrapper::readString) : null;
+        List<List<String>> requirements = wrapper.readList(
+                ew -> wrapper.readList(PacketWrapper::readString));
+        boolean sendsTelemetryData = wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_20)
+                && wrapper.readBoolean();
+        return new Advancement(parentId, display, criteria, requirements, sendsTelemetryData);
+    }
+
+    public static void write(PacketWrapper<?> wrapper, Advancement advancement) {
+        wrapper.writeOptional(advancement.parent, ResourceLocation::write);
+        wrapper.writeOptional(advancement.display, AdvancementDisplay::write);
+        if (wrapper.getServerVersion().isOlderThan(ServerVersion.V_1_20_2)) {
+            wrapper.writeList(advancement.criteria, PacketWrapper::writeString);
+        }
+        wrapper.writeList(advancement.getRequirements(), (ew, anyList) ->
+                ew.writeList(anyList, PacketWrapper::writeString));
+        if (wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_20)) {
+            wrapper.writeBoolean(advancement.sendsTelemetryData);
+        }
+    }
+
+    public @Nullable ResourceLocation getParent() {
+        return this.parent;
+    }
+
+    public void setParent(@Nullable ResourceLocation parent) {
+        this.parent = parent;
+    }
+
+    public @Nullable AdvancementDisplay getDisplay() {
+        return this.display;
+    }
+
+    public void setDisplay(@Nullable AdvancementDisplay display) {
+        this.display = display;
+    }
+
+    /**
+     * Removed with 1.20.2
+     */
+    public List<String> getCriteria() {
+        return this.criteria;
+    }
+
+    /**
+     * Removed with 1.20.2
+     */
+    public void setCriteria(List<String> criteria) {
+        this.criteria = criteria;
+    }
+
+    public List<List<String>> getRequirements() {
+        return this.requirements;
+    }
+
+    public void setRequirements(List<List<String>> requirements) {
+        this.requirements = requirements;
+    }
+
+    /**
+     * Added with 1.20
+     */
+    public boolean isSendsTelemetryData() {
+        return this.sendsTelemetryData;
+    }
+
+    /**
+     * Added with 1.20
+     */
+    public void setSendsTelemetryData(boolean sendsTelemetryData) {
+        this.sendsTelemetryData = sendsTelemetryData;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/advancements/AdvancementDisplay.java

@@ -0,0 +1,168 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.advancements;
+
+import com.github.retrooper.packetevents.protocol.item.ItemStack;
+import com.github.retrooper.packetevents.resources.ResourceLocation;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.text.Component;
+import org.jetbrains.annotations.Nullable;
+
+public final class AdvancementDisplay {
+
+    public static final int FLAG_HAS_BACKGROUND = 0b001;
+    public static final int FLAG_SHOW_TOAST = 0b010;
+    public static final int FLAG_HIDDEN = 0b100;
+
+    private Component title;
+    private Component description;
+    private ItemStack icon;
+    private AdvancementType type;
+    private boolean showToast;
+    private boolean hidden;
+    private @Nullable ResourceLocation background;
+    private float x;
+    private float y;
+
+    public AdvancementDisplay(Component title, Component description, ItemStack icon, AdvancementType type, @Nullable ResourceLocation background, boolean showToast,
+                              boolean hidden, float x, float y) {
+        this.title = title;
+        this.description = description;
+        this.icon = icon;
+        this.type = type;
+        this.showToast = showToast;
+        this.hidden = hidden;
+        this.background = background;
+        this.x = x;
+        this.y = y;
+    }
+
+    public static AdvancementDisplay read(PacketWrapper<?> wrapper) {
+        Component title = wrapper.readComponent();
+        Component description = wrapper.readComponent();
+        ItemStack icon = wrapper.readItemStack();
+        AdvancementType type = wrapper.readEnum(AdvancementType.class);
+        int flags = wrapper.readInt();
+        ResourceLocation background = (flags & FLAG_HAS_BACKGROUND) != 0 ? ResourceLocation.read(wrapper) : null;
+        boolean showToast = (flags & FLAG_SHOW_TOAST) != 0;
+        boolean hidden = (flags & FLAG_HIDDEN) != 0;
+        float x = wrapper.readFloat();
+        float y = wrapper.readFloat();
+        return new AdvancementDisplay(title, description, icon, type, background, showToast, hidden, x, y);
+    }
+
+    public static void write(PacketWrapper<?> wrapper, AdvancementDisplay display) {
+        wrapper.writeComponent(display.title);
+        wrapper.writeComponent(display.description);
+        wrapper.writeItemStack(display.icon);
+        wrapper.writeEnum(display.type);
+        wrapper.writeInt(display.packFlags());
+        if (display.background != null) {
+            ResourceLocation.write(wrapper, display.background);
+        }
+        wrapper.writeFloat(display.x);
+        wrapper.writeFloat(display.y);
+    }
+
+    public int packFlags() {
+        int flags = 0;
+        if (this.background != null) {
+            flags |= FLAG_HAS_BACKGROUND;
+        }
+        if (this.showToast) {
+            flags |= FLAG_SHOW_TOAST;
+        }
+        if (this.hidden) {
+            flags |= FLAG_HIDDEN;
+        }
+        return flags;
+    }
+
+    public Component getTitle() {
+        return this.title;
+    }
+
+    public void setTitle(Component title) {
+        this.title = title;
+    }
+
+    public Component getDescription() {
+        return this.description;
+    }
+
+    public void setDescription(Component description) {
+        this.description = description;
+    }
+
+    public ItemStack getIcon() {
+        return this.icon;
+    }
+
+    public void setIcon(ItemStack icon) {
+        this.icon = icon;
+    }
+
+    public AdvancementType getType() {
+        return this.type;
+    }
+
+    public void setType(AdvancementType type) {
+        this.type = type;
+    }
+
+    public boolean isShowToast() {
+        return this.showToast;
+    }
+
+    public void setShowToast(boolean showToast) {
+        this.showToast = showToast;
+    }
+
+    public boolean isHidden() {
+        return this.hidden;
+    }
+
+    public void setHidden(boolean hidden) {
+        this.hidden = hidden;
+    }
+
+    public @Nullable ResourceLocation getBackground() {
+        return this.background;
+    }
+
+    public void setBackground(@Nullable ResourceLocation background) {
+        this.background = background;
+    }
+
+    public float getX() {
+        return this.x;
+    }
+
+    public void setX(float x) {
+        this.x = x;
+    }
+
+    public float getY() {
+        return this.y;
+    }
+
+    public void setY(float y) {
+        this.y = y;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/advancements/AdvancementHolder.java

@@ -0,0 +1,60 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.advancements;
+
+import com.github.retrooper.packetevents.resources.ResourceLocation;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+
+public final class AdvancementHolder {
+
+    private ResourceLocation identifier;
+    private Advancement advancement;
+
+    public AdvancementHolder(ResourceLocation identifier, Advancement advancement) {
+        this.identifier = identifier;
+        this.advancement = advancement;
+    }
+
+    public static AdvancementHolder read(PacketWrapper<?> wrapper) {
+        ResourceLocation identifier = wrapper.readIdentifier();
+        Advancement advancement = Advancement.read(wrapper);
+        return new AdvancementHolder(identifier, advancement);
+    }
+
+    public static void write(PacketWrapper<?> wrapper, AdvancementHolder holder) {
+        wrapper.writeIdentifier(holder.identifier);
+        Advancement.write(wrapper, holder.advancement);
+    }
+
+    public ResourceLocation getIdentifier() {
+        return this.identifier;
+    }
+
+    public void setIdentifier(ResourceLocation identifier) {
+        this.identifier = identifier;
+    }
+
+    public Advancement getAdvancement() {
+        return this.advancement;
+    }
+
+    public void setAdvancement(Advancement advancement) {
+        this.advancement = advancement;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/advancements/AdvancementProgress.java

@@ -0,0 +1,75 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.advancements;
+
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.Nullable;
+
+import java.util.Map;
+
+public final class AdvancementProgress {
+
+    private Map<String, CriterionProgress> criteria;
+
+    public AdvancementProgress(Map<String, CriterionProgress> criteria) {
+        this.criteria = criteria;
+    }
+
+    public static AdvancementProgress read(PacketWrapper<?> wrapper) {
+        Map<String, CriterionProgress> criteria = wrapper.readMap(PacketWrapper::readString, CriterionProgress::read);
+        return new AdvancementProgress(criteria);
+    }
+
+    public static void write(PacketWrapper<?> wrapper, AdvancementProgress progress) {
+        wrapper.writeMap(progress.getCriteria(), PacketWrapper::writeString, CriterionProgress::write);
+    }
+
+    public Map<String, CriterionProgress> getCriteria() {
+        return this.criteria;
+    }
+
+    public void setCriteria(Map<String, CriterionProgress> criteria) {
+        this.criteria = criteria;
+    }
+
+    public static final class CriterionProgress {
+
+        private @Nullable Long obtainedTimestamp;
+
+        public CriterionProgress(@Nullable Long obtainedTimestamp) {
+            this.obtainedTimestamp = obtainedTimestamp;
+        }
+
+        public static CriterionProgress read(PacketWrapper<?> wrapper) {
+            return new CriterionProgress(wrapper.readOptional(PacketWrapper::readLong));
+        }
+
+        public static void write(PacketWrapper<?> wrapper, CriterionProgress progress) {
+            wrapper.writeOptional(progress.obtainedTimestamp, PacketWrapper::writeLong);
+        }
+
+        public @Nullable Long getObtainedTimestamp() {
+            return this.obtainedTimestamp;
+        }
+
+        public void setObtainedTimestamp(@Nullable Long obtainedTimestamp) {
+            this.obtainedTimestamp = obtainedTimestamp;
+        }
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/advancements/AdvancementType.java

@@ -0,0 +1,27 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.advancements;
+
+public enum AdvancementType {
+
+    TASK,
+    CHALLENGE,
+    GOAL,
+    ;
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/attribute/AttributeDisplay.java

@@ -0,0 +1,39 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.attribute;
+
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public interface AttributeDisplay {
+
+    static AttributeDisplay read(PacketWrapper<?> wrapper) {
+        AttributeDisplayType<?> type = wrapper.readMappedEntity(AttributeDisplayTypes.getRegistry());
+        return type.read(wrapper);
+    }
+
+    @SuppressWarnings("unchecked") // not unchecked
+    static void write(PacketWrapper<?> wrapper, AttributeDisplay display) {
+        wrapper.writeMappedEntity(display.getType());
+        ((AttributeDisplayType<? super AttributeDisplay>) display.getType()).write(wrapper, display);
+    }
+
+    AttributeDisplayType<?> getType();
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/attribute/AttributeDisplayType.java

@@ -0,0 +1,31 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.attribute;
+
+import com.github.retrooper.packetevents.protocol.mapper.MappedEntity;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public interface AttributeDisplayType<T extends AttributeDisplay> extends MappedEntity {
+
+    T read(PacketWrapper<?> wrapper);
+
+    void write(PacketWrapper<?> wrapper, T display);
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/attribute/AttributeDisplayTypes.java

@@ -0,0 +1,56 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.attribute;
+
+import com.github.retrooper.packetevents.util.mappings.VersionedRegistry;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public final class AttributeDisplayTypes {
+
+    private static final VersionedRegistry<AttributeDisplayType<?>> REGISTRY = new VersionedRegistry<>("attribute_display_type");
+
+    private AttributeDisplayTypes() {
+    }
+
+    @ApiStatus.Internal
+    public static <T extends AttributeDisplay> AttributeDisplayType<T> define(
+            String name, PacketWrapper.Reader<T> reader, PacketWrapper.Writer<T> writer
+    ) {
+        return REGISTRY.define(name, data ->
+                new StaticAttributeDisplayType<>(data, reader, writer));
+    }
+
+    public static VersionedRegistry<AttributeDisplayType<?>> getRegistry() {
+        return REGISTRY;
+    }
+
+    public static final AttributeDisplayType<DefaultAttributeDisplay> DEFAULT = define("default",
+            DefaultAttributeDisplay::read, DefaultAttributeDisplay::write);
+    public static final AttributeDisplayType<HiddenAttributeDisplay> HIDDEN = define("hidden",
+            HiddenAttributeDisplay::read, HiddenAttributeDisplay::write);
+    public static final AttributeDisplayType<OverrideAttributeDisplay> OVERRIDE = define("override",
+            OverrideAttributeDisplay::read, OverrideAttributeDisplay::write);
+
+    static {
+        REGISTRY.unloadMappings();
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/attribute/Attributes.java

@@ -187,6 +187,22 @@ public final class Attributes {
     public static final Attribute TEMPT_RANGE = define("tempt_range",
             null, 10d, 0d, 2048d);
 
+    /**
+     * Added with 1.21.6
+     */
+    public static final Attribute CAMERA_DISTANCE = define("camera_distance",
+            null, 4d, 0d, 32d);
+    /**
+     * Added with 1.21.6
+     */
+    public static final Attribute WAYPOINT_TRANSMIT_RANGE = define("waypoint_transmit_range",
+            null, 0d, 0d, 60_000_000d);
+    /**
+     * Added with 1.21.6
+     */
+    public static final Attribute WAYPOINT_RECEIVE_RANGE = define("waypoint_receive_range",
+            null, 0d, 0d, 60_000_000d);
+
     /**
      * This attribute has been renamed in 1.20.5 to {@link #JUMP_STRENGTH}
      */

api/src/main/java/com/github/retrooper/packetevents/protocol/attribute/DefaultAttributeDisplay.java

@@ -0,0 +1,44 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.attribute;
+
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class DefaultAttributeDisplay implements AttributeDisplay {
+
+    public static final DefaultAttributeDisplay INSTANCE = new DefaultAttributeDisplay();
+
+    private DefaultAttributeDisplay() {
+    }
+
+    public static DefaultAttributeDisplay read(PacketWrapper<?> wrapper) {
+        return INSTANCE;
+    }
+
+    public static void write(PacketWrapper<?> wrapper, DefaultAttributeDisplay display) {
+        // NO-OP
+    }
+
+    @Override
+    public AttributeDisplayType<?> getType() {
+        return AttributeDisplayTypes.DEFAULT;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/attribute/HiddenAttributeDisplay.java

@@ -0,0 +1,44 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.attribute;
+
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class HiddenAttributeDisplay implements AttributeDisplay {
+
+    public static final HiddenAttributeDisplay INSTANCE = new HiddenAttributeDisplay();
+
+    private HiddenAttributeDisplay() {
+    }
+
+    public static HiddenAttributeDisplay read(PacketWrapper<?> wrapper) {
+        return INSTANCE;
+    }
+
+    public static void write(PacketWrapper<?> wrapper, HiddenAttributeDisplay display) {
+        // NO-OP
+    }
+
+    @Override
+    public AttributeDisplayType<?> getType() {
+        return AttributeDisplayTypes.HIDDEN;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/attribute/OverrideAttributeDisplay.java

@@ -0,0 +1,64 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.attribute;
+
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.text.Component;
+import org.jspecify.annotations.NullMarked;
+
+import java.util.Objects;
+
+@NullMarked
+public class OverrideAttributeDisplay implements AttributeDisplay {
+
+    private final Component component;
+
+    public OverrideAttributeDisplay(Component component) {
+        this.component = component;
+    }
+
+    public static OverrideAttributeDisplay read(PacketWrapper<?> wrapper) {
+        return new OverrideAttributeDisplay(wrapper.readComponent());
+    }
+
+    public static void write(PacketWrapper<?> wrapper, OverrideAttributeDisplay display) {
+        wrapper.writeComponent(display.component);
+    }
+
+    @Override
+    public AttributeDisplayType<?> getType() {
+        return AttributeDisplayTypes.OVERRIDE;
+    }
+
+    public Component getComponent() {
+        return this.component;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (!(obj instanceof OverrideAttributeDisplay)) return false;
+        OverrideAttributeDisplay that = (OverrideAttributeDisplay) obj;
+        return this.component.equals(that.component);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(this.component);
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/attribute/StaticAttributeDisplayType.java

@@ -0,0 +1,52 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.attribute;
+
+import com.github.retrooper.packetevents.protocol.mapper.AbstractMappedEntity;
+import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper.Reader;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper.Writer;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class StaticAttributeDisplayType<T extends AttributeDisplay> extends AbstractMappedEntity implements AttributeDisplayType<T> {
+
+    private final Reader<T> reader;
+    private final Writer<T> writer;
+
+    @ApiStatus.Internal
+    public StaticAttributeDisplayType(@Nullable TypesBuilderData data, Reader<T> reader, Writer<T> writer) {
+        super(data);
+        this.reader = reader;
+        this.writer = writer;
+    }
+
+    @Override
+    public T read(PacketWrapper<?> wrapper) {
+        return this.reader.apply(wrapper);
+    }
+
+    @Override
+    public void write(PacketWrapper<?> wrapper, T display) {
+        this.writer.accept(wrapper, display);
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/ChatTypeDecoration.java

@@ -72,7 +72,12 @@ public class ChatTypeDecoration {
         wrapper.writeStyle(decoration.style);
     }
 
+    @Deprecated
     public static ChatTypeDecoration decode(NBT nbt, ClientVersion version) {
+        return decode(nbt, PacketWrapper.createDummyWrapper(version));
+    }
+
+    public static ChatTypeDecoration decode(NBT nbt, PacketWrapper<?> wrapper) {
         NBTCompound compound = (NBTCompound) nbt;
         String translationKey = compound.getStringTagValueOrThrow("translation_key");
         NBT paramsTag = compound.getTagOrThrow("parameters");
@@ -90,11 +95,16 @@ public class ChatTypeDecoration {
         }
         NBTCompound styleTag = compound.getCompoundTagOrNull("style");
         Style style = styleTag == null ? empty() :
-                AdventureSerializer.serializer(version).nbt().deserializeStyle(styleTag);
+                wrapper.getSerializers().nbt().deserializeStyle(styleTag, wrapper);
         return new ChatTypeDecoration(translationKey, params, style);
     }
 
+    @Deprecated
     public static NBT encode(ChatTypeDecoration decoration, ClientVersion version) {
+        return encode(decoration, PacketWrapper.createDummyWrapper(version));
+    }
+
+    public static NBT encode(ChatTypeDecoration decoration, PacketWrapper<?> wrapper) {
         NBTList<NBTString> paramsTag = NBTList.createStringList();
         for (Parameter param : decoration.parameters) {
             paramsTag.addTag(new NBTString(param.getId()));
@@ -104,8 +114,8 @@ public class ChatTypeDecoration {
         compound.setTag("translation_key", new NBTString(decoration.translationKey));
         compound.setTag("parameters", paramsTag);
         if (!decoration.style.isEmpty()) {
-            compound.setTag("style", AdventureSerializer.serializer(version)
-                    .nbt().serializeStyle(decoration.style));
+            compound.setTag("style", wrapper.getSerializers()
+                    .nbt().serializeStyle(decoration.style, wrapper));
         }
         return compound;
     }

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/Node.java

@@ -28,6 +28,20 @@ import java.util.Optional;
 
 public class Node {
 
+    public static final byte TYPE_MASK = 0b11;
+    public static final byte TYPE_ROOT = 0b00;
+    public static final byte TYPE_LITERAL = 0b01;
+    public static final byte TYPE_ARGUMENT = 0b10;
+
+    public static final byte FLAG_MASK = ~TYPE_MASK;
+    public static final byte FLAG_EXECUTABLE = 0b000100;
+    public static final byte FLAG_REDIRECT = 0b001000;
+    public static final byte FLAG_CUSTOM_SUGGESTIONS = 0b010000;
+    /**
+     * Added with 1.21.6
+     */
+    public static final byte FLAG_RESTRICTED = 0b100000;
+
     private byte flags;
     private List<Integer> children;
     private int redirectNodeIndex;

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/Parsers.java

@@ -27,6 +27,7 @@ import com.github.retrooper.packetevents.util.mappings.VersionedRegistry;
 import com.github.retrooper.packetevents.wrapper.PacketWrapper;
 import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -36,9 +37,10 @@ import java.util.Optional;
 import java.util.function.BiConsumer;
 import java.util.function.Function;
 
+@NullMarked
 public final class Parsers {
 
-    private static final VersionedRegistry<Parser> REGISTRY = new VersionedRegistry<>("argument_type");
+    private static final VersionedRegistry<Parser> REGISTRY = new VersionedRegistry<>("command_argument_type");
 
     private Parsers() {
     }
@@ -218,6 +220,15 @@ public final class Parsers {
             (wrapper, value) -> wrapper.writeIdentifier((ResourceLocation) value.get(0))
     );
 
+    /**
+     * Added with 1.21.6
+     */
+    public static final Parser HEX_COLOR = define("hex_color", null, null);
+    /**
+     * Added with 1.21.6
+     */
+    public static final Parser DIALOG = define("dialog", null, null);
+
     static {
         REGISTRY.unloadMappings();
     }

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/clickevent/ChangePageClickEvent.java

@@ -0,0 +1,71 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.chat.clickevent;
+
+import com.github.retrooper.packetevents.manager.server.ServerVersion;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTInt;
+import com.github.retrooper.packetevents.protocol.nbt.NBTString;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class ChangePageClickEvent implements ClickEvent {
+
+    private final int page;
+
+    @ApiStatus.Obsolete
+    public ChangePageClickEvent(String page) {
+        this(Integer.parseInt(page));
+    }
+
+    public ChangePageClickEvent(int page) {
+        this.page = page;
+    }
+
+    public static ChangePageClickEvent decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        int page = wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5)
+                ? compound.getNumberTagValueOrThrow("page").intValue()
+                : Integer.parseInt(compound.getStringTagValueOrThrow("value"));
+        return new ChangePageClickEvent(page);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, ChangePageClickEvent clickEvent) {
+        if (wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5)) {
+            compound.setTag("page", new NBTInt(clickEvent.page));
+        } else {
+            compound.setTag("value", new NBTString(Integer.toString(clickEvent.page)));
+        }
+    }
+
+    @Override
+    public ClickEventAction<?> getAction() {
+        return ClickEventActions.CHANGE_PAGE;
+    }
+
+    @Override
+    public net.kyori.adventure.text.event.ClickEvent asAdventure() {
+        return net.kyori.adventure.text.event.ClickEvent.changePage(this.page);
+    }
+
+    public int getPage() {
+        return this.page;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/clickevent/ClickEvent.java

@@ -0,0 +1,76 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.chat.clickevent;
+
+import com.github.retrooper.packetevents.protocol.dialog.Dialog;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTEnd;
+import com.github.retrooper.packetevents.resources.ResourceLocation;
+import com.github.retrooper.packetevents.util.adventure.NbtTagHolder;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.text.event.ClickEvent.Payload;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public interface ClickEvent {
+
+    static ClickEvent decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        String actionName = compound.getStringTagValueOrThrow("action");
+        ClickEventAction<?> action = ClickEventActions.getRegistry().getByNameOrThrow(actionName);
+        return action.decode(compound, wrapper);
+    }
+
+    @SuppressWarnings("unchecked") // not unchecked
+    static void encode(NBTCompound compound, PacketWrapper<?> wrapper, ClickEvent clickEvent) {
+        compound.set("action", clickEvent.getAction().getName(), ResourceLocation::encode, wrapper);
+        ((ClickEventAction<? super ClickEvent>) clickEvent.getAction()).encode(compound, wrapper, clickEvent);
+    }
+
+    ClickEventAction<?> getAction();
+
+    static ClickEvent fromAdventure(net.kyori.adventure.text.event.ClickEvent clickEvent) {
+        switch (clickEvent.action()) {
+            case OPEN_URL:
+                return new OpenUrlClickEvent(clickEvent.value());
+            case OPEN_FILE:
+                return new OpenFileClickEvent(clickEvent.value());
+            case RUN_COMMAND:
+                return new RunCommandClickEvent(clickEvent.value());
+            case SUGGEST_COMMAND:
+                return new SuggestCommandClickEvent(clickEvent.value());
+            case CHANGE_PAGE:
+                return new ChangePageClickEvent(clickEvent.value());
+            case COPY_TO_CLIPBOARD:
+                return new CopyToClipboardClickEvent(clickEvent.value());
+            case SHOW_DIALOG:
+                return new ShowDialogClickEvent((Dialog) ((Payload.Dialog) clickEvent.payload()).dialog());
+            case CUSTOM:
+                Payload.Custom payload = (Payload.Custom) clickEvent.payload();
+                NbtTagHolder nbtTag = (NbtTagHolder) payload.nbt();
+                return new CustomClickEvent(
+                        new ResourceLocation(payload.key()),
+                        nbtTag.getTag() instanceof NBTEnd ? null : nbtTag.getTag()
+                );
+            default:
+                throw new UnsupportedOperationException("Unsupported clickevent: " + clickEvent);
+        }
+    }
+
+    net.kyori.adventure.text.event.ClickEvent asAdventure();
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/clickevent/ClickEventAction.java

@@ -0,0 +1,34 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.chat.clickevent;
+
+import com.github.retrooper.packetevents.protocol.mapper.MappedEntity;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public interface ClickEventAction<T extends ClickEvent> extends MappedEntity {
+
+    boolean isAllowFromServer();
+
+    T decode(NBTCompound compound, PacketWrapper<?> wrapper);
+
+    void encode(NBTCompound compound, PacketWrapper<?> wrapper, T clickEvent);
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/clickevent/ClickEventActions.java

@@ -0,0 +1,89 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.chat.clickevent;
+
+import com.github.retrooper.packetevents.protocol.util.NbtMapDecoder;
+import com.github.retrooper.packetevents.protocol.util.NbtMapEncoder;
+import com.github.retrooper.packetevents.util.mappings.VersionedRegistry;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public final class ClickEventActions {
+
+    private static final VersionedRegistry<ClickEventAction<?>> REGISTRY = new VersionedRegistry<>("click_event_action");
+
+    private ClickEventActions() {
+    }
+
+    @ApiStatus.Internal
+    public static <T extends ClickEvent> ClickEventAction<T> define(
+            String name, boolean allowFromServer,
+            NbtMapDecoder<T> decoder, NbtMapEncoder<T> encoder
+    ) {
+        return REGISTRY.define(name, data -> new StaticClickEventAction<>(
+                data, allowFromServer, decoder, encoder));
+    }
+
+    public static VersionedRegistry<ClickEventAction<?>> getRegistry() {
+        return REGISTRY;
+    }
+
+    public static final ClickEventAction<OpenUrlClickEvent> OPEN_URL = define("open_url", true,
+            OpenUrlClickEvent::decode, OpenUrlClickEvent::encode);
+    public static final ClickEventAction<OpenFileClickEvent> OPEN_FILE = define("open_file", false,
+            OpenFileClickEvent::decode, OpenFileClickEvent::encode);
+    public static final ClickEventAction<RunCommandClickEvent> RUN_COMMAND = define("run_command", true,
+            RunCommandClickEvent::decode, RunCommandClickEvent::encode);
+    /**
+     * Removed in 1.9
+     */
+    @ApiStatus.Obsolete
+    public static final ClickEventAction<TwitchUserInfoClickEvent> TWITCH_USER_INFO = define("twitch_user_info", false,
+            TwitchUserInfoClickEvent::decode, TwitchUserInfoClickEvent::encode);
+    public static final ClickEventAction<SuggestCommandClickEvent> SUGGEST_COMMAND = define("suggest_command", true,
+            SuggestCommandClickEvent::decode, SuggestCommandClickEvent::encode);
+
+    /**
+     * Added with 1.8
+     */
+    public static final ClickEventAction<ChangePageClickEvent> CHANGE_PAGE = define("change_page", true,
+            ChangePageClickEvent::decode, ChangePageClickEvent::encode);
+
+    /**
+     * Added with 1.15
+     */
+    public static final ClickEventAction<CopyToClipboardClickEvent> COPY_TO_CLIPBOARD = define("copy_to_clipboard", true,
+            CopyToClipboardClickEvent::decode, CopyToClipboardClickEvent::encode);
+
+    /**
+     * Added with 1.21.6
+     */
+    public static final ClickEventAction<ShowDialogClickEvent> SHOW_DIALOG = define("show_dialog", true,
+            ShowDialogClickEvent::decode, ShowDialogClickEvent::encode);
+    /**
+     * Added with 1.21.6
+     */
+    public static final ClickEventAction<CustomClickEvent> CUSTOM = define("custom", true,
+            CustomClickEvent::decode, CustomClickEvent::encode);
+
+    static {
+        REGISTRY.unloadMappings();
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/clickevent/CopyToClipboardClickEvent.java

@@ -0,0 +1,57 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.chat.clickevent;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTString;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class CopyToClipboardClickEvent implements ClickEvent {
+
+    private final String value;
+
+    public CopyToClipboardClickEvent(String value) {
+        this.value = value;
+    }
+
+    public static CopyToClipboardClickEvent decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        String value = compound.getStringTagValueOrThrow("value");
+        return new CopyToClipboardClickEvent(value);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, CopyToClipboardClickEvent clickEvent) {
+        compound.setTag("value", new NBTString(clickEvent.value));
+    }
+
+    @Override
+    public ClickEventAction<?> getAction() {
+        return ClickEventActions.COPY_TO_CLIPBOARD;
+    }
+
+    @Override
+    public net.kyori.adventure.text.event.ClickEvent asAdventure() {
+        return net.kyori.adventure.text.event.ClickEvent.copyToClipboard(this.value);
+    }
+
+    public String getValue() {
+        return this.value;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/clickevent/CustomClickEvent.java

@@ -0,0 +1,72 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.chat.clickevent;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBT;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTEnd;
+import com.github.retrooper.packetevents.resources.ResourceLocation;
+import com.github.retrooper.packetevents.util.adventure.NbtTagHolder;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+@NullMarked
+public class CustomClickEvent implements ClickEvent {
+
+    private final ResourceLocation id;
+    private final @Nullable NBT payload;
+
+    public CustomClickEvent(ResourceLocation id, @Nullable NBT payload) {
+        this.id = id;
+        this.payload = payload;
+    }
+
+    public static CustomClickEvent decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        ResourceLocation id = compound.getOrThrow("id", ResourceLocation::decode, wrapper);
+        NBT payload = compound.getTagOrNull("payload");
+        return new CustomClickEvent(id, payload);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, CustomClickEvent clickEvent) {
+        compound.set("id", clickEvent.id, ResourceLocation::encode, wrapper);
+        if (clickEvent.payload != null) {
+            compound.setTag("payload", clickEvent.payload);
+        }
+    }
+
+    @Override
+    public ClickEventAction<?> getAction() {
+        return ClickEventActions.CUSTOM;
+    }
+
+    @Override
+    public net.kyori.adventure.text.event.ClickEvent asAdventure() {
+        return net.kyori.adventure.text.event.ClickEvent.custom(
+                this.id.key(), new NbtTagHolder(this.payload != null ? this.payload : NBTEnd.INSTANCE));
+    }
+
+    public ResourceLocation getId() {
+        return this.id;
+    }
+
+    public @Nullable NBT getPayload() {
+        return this.payload;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/clickevent/OpenFileClickEvent.java

@@ -0,0 +1,60 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.chat.clickevent;
+
+import com.github.retrooper.packetevents.manager.server.ServerVersion;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTString;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class OpenFileClickEvent implements ClickEvent {
+
+    private final String path;
+
+    public OpenFileClickEvent(String path) {
+        this.path = path;
+    }
+
+    public static OpenFileClickEvent decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        boolean v1215 = wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5);
+        String path = compound.getStringTagValueOrThrow(v1215 ? "path" : "value");
+        return new OpenFileClickEvent(path);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, OpenFileClickEvent clickEvent) {
+        boolean v1215 = wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5);
+        compound.setTag(v1215 ? "path" : "value", new NBTString(clickEvent.path));
+    }
+
+    @Override
+    public ClickEventAction<?> getAction() {
+        return ClickEventActions.OPEN_FILE;
+    }
+
+    @Override
+    public net.kyori.adventure.text.event.ClickEvent asAdventure() {
+        return net.kyori.adventure.text.event.ClickEvent.openFile(this.path);
+    }
+
+    public String getPath() {
+        return this.path;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/clickevent/OpenUrlClickEvent.java

@@ -0,0 +1,60 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.chat.clickevent;
+
+import com.github.retrooper.packetevents.manager.server.ServerVersion;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTString;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class OpenUrlClickEvent implements ClickEvent {
+
+    private final String url;
+
+    public OpenUrlClickEvent(String url) {
+        this.url = url;
+    }
+
+    public static OpenUrlClickEvent decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        boolean v1215 = wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5);
+        String url = compound.getStringTagValueOrThrow(v1215 ? "url" : "value");
+        return new OpenUrlClickEvent(url);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, OpenUrlClickEvent clickEvent) {
+        boolean v1215 = wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5);
+        compound.setTag(v1215 ? "url" : "value", new NBTString(clickEvent.url));
+    }
+
+    @Override
+    public ClickEventAction<?> getAction() {
+        return ClickEventActions.OPEN_URL;
+    }
+
+    @Override
+    public net.kyori.adventure.text.event.ClickEvent asAdventure() {
+        return net.kyori.adventure.text.event.ClickEvent.openUrl(this.url);
+    }
+
+    public String getUrl() {
+        return this.url;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/clickevent/RunCommandClickEvent.java

@@ -0,0 +1,60 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.chat.clickevent;
+
+import com.github.retrooper.packetevents.manager.server.ServerVersion;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTString;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class RunCommandClickEvent implements ClickEvent {
+
+    private final String command;
+
+    public RunCommandClickEvent(String command) {
+        this.command = command;
+    }
+
+    public static RunCommandClickEvent decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        boolean v1215 = wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5);
+        String command = compound.getStringTagValueOrThrow(v1215 ? "command" : "value");
+        return new RunCommandClickEvent(command);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, RunCommandClickEvent clickEvent) {
+        boolean v1215 = wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5);
+        compound.setTag(v1215 ? "command" : "value", new NBTString(clickEvent.command));
+    }
+
+    @Override
+    public ClickEventAction<?> getAction() {
+        return ClickEventActions.RUN_COMMAND;
+    }
+
+    @Override
+    public net.kyori.adventure.text.event.ClickEvent asAdventure() {
+        return net.kyori.adventure.text.event.ClickEvent.runCommand(this.command);
+    }
+
+    public String getCommand() {
+        return this.command;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/clickevent/ShowDialogClickEvent.java

@@ -0,0 +1,68 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.chat.clickevent;
+
+import com.github.retrooper.packetevents.protocol.dialog.Dialog;
+import com.github.retrooper.packetevents.protocol.dialog.Dialogs;
+import com.github.retrooper.packetevents.protocol.mapper.MappedEntityRef;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class ShowDialogClickEvent implements ClickEvent {
+
+    private final MappedEntityRef<Dialog> dialog;
+
+    public ShowDialogClickEvent(Dialog dialog) {
+        this(new MappedEntityRef.Static<>(dialog));
+    }
+
+    public ShowDialogClickEvent(MappedEntityRef<Dialog> dialog) {
+        this.dialog = dialog;
+    }
+
+    public static ShowDialogClickEvent decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        MappedEntityRef<Dialog> dialog = MappedEntityRef.decode(compound.getTagOrThrow("dialog"),
+                Dialogs.getRegistry(), Dialog::decode, wrapper);
+        return new ShowDialogClickEvent(dialog);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, ShowDialogClickEvent clickEvent) {
+        compound.setTag("dialog", MappedEntityRef.encode(wrapper, Dialog::encode, clickEvent.dialog));
+    }
+
+    @Override
+    public ClickEventAction<?> getAction() {
+        return ClickEventActions.SHOW_DIALOG;
+    }
+
+    @Override
+    public net.kyori.adventure.text.event.ClickEvent asAdventure() {
+        return net.kyori.adventure.text.event.ClickEvent.showDialog(this.dialog.get());
+    }
+
+    public MappedEntityRef<Dialog> getDialogRef() {
+        return this.dialog;
+    }
+
+    public Dialog getDialog() {
+        return this.dialog.get();
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/clickevent/StaticClickEventAction.java

@@ -0,0 +1,63 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.chat.clickevent;
+
+import com.github.retrooper.packetevents.protocol.mapper.AbstractMappedEntity;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.util.NbtMapDecoder;
+import com.github.retrooper.packetevents.protocol.util.NbtMapEncoder;
+import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class StaticClickEventAction<T extends ClickEvent> extends AbstractMappedEntity implements ClickEventAction<T> {
+
+    private final boolean allowFromServer;
+    private final NbtMapDecoder<T> decoder;
+    private final NbtMapEncoder<T> encoder;
+
+    @ApiStatus.Internal
+    public StaticClickEventAction(
+            @Nullable TypesBuilderData data, boolean allowFromServer,
+            NbtMapDecoder<T> decoder, NbtMapEncoder<T> encoder
+    ) {
+        super(data);
+        this.allowFromServer = allowFromServer;
+        this.decoder = decoder;
+        this.encoder = encoder;
+    }
+
+    @Override
+    public boolean isAllowFromServer() {
+        return this.allowFromServer;
+    }
+
+    @Override
+    public T decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        return this.decoder.decode(compound, wrapper);
+    }
+
+    @Override
+    public void encode(NBTCompound compound, PacketWrapper<?> wrapper, T clickEvent) {
+        this.encoder.encode(compound, wrapper, clickEvent);
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/clickevent/SuggestCommandClickEvent.java

@@ -0,0 +1,60 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.chat.clickevent;
+
+import com.github.retrooper.packetevents.manager.server.ServerVersion;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTString;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class SuggestCommandClickEvent implements ClickEvent {
+
+    private final String command;
+
+    public SuggestCommandClickEvent(String command) {
+        this.command = command;
+    }
+
+    public static SuggestCommandClickEvent decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        boolean v1215 = wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5);
+        String command = compound.getStringTagValueOrThrow(v1215 ? "command" : "value");
+        return new SuggestCommandClickEvent(command);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, SuggestCommandClickEvent clickEvent) {
+        boolean v1215 = wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5);
+        compound.setTag(v1215 ? "command" : "value", new NBTString(clickEvent.command));
+    }
+
+    @Override
+    public ClickEventAction<?> getAction() {
+        return ClickEventActions.SUGGEST_COMMAND;
+    }
+
+    @Override
+    public net.kyori.adventure.text.event.ClickEvent asAdventure() {
+        return net.kyori.adventure.text.event.ClickEvent.suggestCommand(this.command);
+    }
+
+    public String getCommand() {
+        return this.command;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/clickevent/TwitchUserInfoClickEvent.java

@@ -0,0 +1,62 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.chat.clickevent;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTString;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+/**
+ * Removed in 1.9
+ */
+@NullMarked
+@ApiStatus.Obsolete
+public class TwitchUserInfoClickEvent implements ClickEvent {
+
+    private final String value;
+
+    public TwitchUserInfoClickEvent(String value) {
+        this.value = value;
+    }
+
+    public static TwitchUserInfoClickEvent decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        String value = compound.getStringTagValueOrThrow("value");
+        return new TwitchUserInfoClickEvent(value);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, TwitchUserInfoClickEvent clickEvent) {
+        compound.setTag("value", new NBTString(clickEvent.value));
+    }
+
+    @Override
+    public ClickEventAction<?> getAction() {
+        return ClickEventActions.TWITCH_USER_INFO;
+    }
+
+    @Override
+    public net.kyori.adventure.text.event.ClickEvent asAdventure() {
+        throw new UnsupportedOperationException();
+    }
+
+    public String getValue() {
+        return this.value;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/chat/message/ChatMessage.java

@@ -19,6 +19,8 @@
 package com.github.retrooper.packetevents.protocol.chat.message;
 
 import com.github.retrooper.packetevents.protocol.chat.ChatType;
+import com.github.retrooper.packetevents.protocol.player.ClientVersion;
+import com.github.retrooper.packetevents.util.adventure.AdventureSerializer;
 import net.kyori.adventure.text.Component;
 
 public class ChatMessage {
@@ -34,14 +36,22 @@ public class ChatMessage {
         return chatContent;
     }
 
-    public ChatType getType() {
-        return type;
+    public String getChatContentJson(ClientVersion version) {
+        return AdventureSerializer.serializer(version).asJson(this.getChatContent());
     }
 
     public void setChatContent(Component chatContent) {
         this.chatContent = chatContent;
     }
 
+    public void setChatContentJson(ClientVersion version, String json) {
+        this.setChatContent(AdventureSerializer.serializer(version).fromJson(json));
+    }
+
+    public ChatType getType() {
+        return type;
+    }
+
     public void setType(ChatType type) {
         this.type = type;
     }

api/src/main/java/com/github/retrooper/packetevents/protocol/color/Color.java

@@ -65,6 +65,16 @@ public class Color implements RGBLike {
         wrapper.writeInt(color.asRGB());
     }
 
+    public static Color readShort(PacketWrapper<?> wrapper) {
+        return new Color(wrapper.readUnsignedByte(), wrapper.readUnsignedByte(), wrapper.readUnsignedByte());
+    }
+
+    public static void writeShort(PacketWrapper<?> wrapper, Color color) {
+        wrapper.writeByte(color.red);
+        wrapper.writeByte(color.green);
+        wrapper.writeByte(color.blue);
+    }
+
     public static Color decode(NBT nbt, ClientVersion version) {
         if (nbt instanceof NBTNumber) {
             return new Color(((NBTNumber) nbt).getAsInt());

api/src/main/java/com/github/retrooper/packetevents/protocol/component/IComponentMap.java

@@ -22,14 +22,22 @@ import com.github.retrooper.packetevents.protocol.nbt.NBT;
 import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
 import com.github.retrooper.packetevents.protocol.player.ClientVersion;
 import com.github.retrooper.packetevents.util.mappings.IRegistry;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
 import org.jetbrains.annotations.Contract;
 import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
 
 import java.util.Map;
 import java.util.Optional;
 
+@NullMarked
 public interface IComponentMap {
 
+    static StaticComponentMap decode(NBT nbt, PacketWrapper<?> wrapper, IRegistry<? extends ComponentType<?>> registry) {
+        return decode(nbt, wrapper.getServerVersion().toClientVersion(), registry);
+    }
+
+    @Deprecated
     @SuppressWarnings("unchecked") // safe in this case
     static StaticComponentMap decode(NBT nbt, ClientVersion version, IRegistry<? extends ComponentType<?>> registry) {
         NBTCompound compound = (NBTCompound) nbt;
@@ -45,6 +53,11 @@ public interface IComponentMap {
         return components.build();
     }
 
+    static NBT encode(PacketWrapper<?> wrapper, StaticComponentMap components) {
+        return encode(components, wrapper.getServerVersion().toClientVersion());
+    }
+
+    @Deprecated
     @SuppressWarnings("unchecked") // safe in this case
     static NBT encode(StaticComponentMap components, ClientVersion version) {
         NBTCompound compound = new NBTCompound();

api/src/main/java/com/github/retrooper/packetevents/protocol/component/builtin/item/ItemAttributeModifiers.java

@@ -20,8 +20,10 @@ package com.github.retrooper.packetevents.protocol.component.builtin.item;
 
 import com.github.retrooper.packetevents.manager.server.ServerVersion;
 import com.github.retrooper.packetevents.protocol.attribute.Attribute;
+import com.github.retrooper.packetevents.protocol.attribute.AttributeDisplay;
 import com.github.retrooper.packetevents.protocol.attribute.AttributeOperation;
 import com.github.retrooper.packetevents.protocol.attribute.Attributes;
+import com.github.retrooper.packetevents.protocol.attribute.DefaultAttributeDisplay;
 import com.github.retrooper.packetevents.resources.ResourceLocation;
 import com.github.retrooper.packetevents.wrapper.PacketWrapper;
 import com.github.retrooper.packetevents.wrapper.play.server.WrapperPlayServerUpdateAttributes.PropertyModifier;
@@ -133,24 +135,39 @@ public class ItemAttributeModifiers {
         private Attribute attribute;
         private Modifier modifier;
         private EquipmentSlotGroup slotGroup;
+        private AttributeDisplay display;
 
+        @ApiStatus.Obsolete
         public ModifierEntry(Attribute attribute, Modifier modifier, EquipmentSlotGroup slotGroup) {
+            this(attribute, modifier, slotGroup, DefaultAttributeDisplay.INSTANCE);
+        }
+
+        public ModifierEntry(
+                Attribute attribute, Modifier modifier,
+                EquipmentSlotGroup slotGroup, AttributeDisplay display
+        ) {
             this.attribute = attribute;
             this.modifier = modifier;
             this.slotGroup = slotGroup;
+            this.display = display;
         }
 
         public static ModifierEntry read(PacketWrapper<?> wrapper) {
             Attribute attribute = wrapper.readMappedEntity(Attributes::getById);
             Modifier modifier = Modifier.read(wrapper);
             EquipmentSlotGroup slot = wrapper.readEnum(EquipmentSlotGroup.values());
-            return new ModifierEntry(attribute, modifier, slot);
+            AttributeDisplay display = wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_6)
+                    ? AttributeDisplay.read(wrapper) : DefaultAttributeDisplay.INSTANCE;
+            return new ModifierEntry(attribute, modifier, slot, display);
         }
 
         public static void write(PacketWrapper<?> wrapper, ModifierEntry entry) {
             wrapper.writeMappedEntity(entry.attribute);
             Modifier.write(wrapper, entry.modifier);
             wrapper.writeEnum(entry.slotGroup);
+            if (wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_6)) {
+                AttributeDisplay.write(wrapper, entry.display);
+            }
         }
 
         public Attribute getAttribute() {

api/src/main/java/com/github/retrooper/packetevents/protocol/component/builtin/item/ItemEquippable.java

@@ -24,6 +24,7 @@ import com.github.retrooper.packetevents.protocol.entity.type.EntityTypes;
 import com.github.retrooper.packetevents.protocol.mapper.MappedEntitySet;
 import com.github.retrooper.packetevents.protocol.player.EquipmentSlot;
 import com.github.retrooper.packetevents.protocol.sound.Sound;
+import com.github.retrooper.packetevents.protocol.sound.Sounds;
 import com.github.retrooper.packetevents.resources.ResourceLocation;
 import com.github.retrooper.packetevents.wrapper.PacketWrapper;
 import org.jetbrains.annotations.ApiStatus;
@@ -41,7 +42,18 @@ public class ItemEquippable {
     private boolean dispensable;
     private boolean swappable;
     private boolean damageOnHurt;
+    /**
+     * Added with 1.21.5
+     */
     private boolean equipOnInteract;
+    /**
+     * Added with 1.21.6
+     */
+    private boolean canBeSheared;
+    /**
+     * Added with 1.21.6
+     */
+    private Sound shearingSound;
 
     @ApiStatus.Obsolete
     public ItemEquippable(
@@ -58,6 +70,7 @@ public class ItemEquippable {
                 dispensable, swappable, damageOnHurt, false);
     }
 
+    @ApiStatus.Obsolete
     public ItemEquippable(
             EquipmentSlot slot,
             Sound equipSound,
@@ -68,6 +81,24 @@ public class ItemEquippable {
             boolean swappable,
             boolean damageOnHurt,
             boolean equipOnInteract
+    ) {
+        this(slot, equipSound, assetId, cameraOverlay, allowedEntities,
+                dispensable, swappable, damageOnHurt, equipOnInteract,
+                false, Sounds.ITEM_SHEARS_SNIP);
+    }
+
+    public ItemEquippable(
+            EquipmentSlot slot,
+            Sound equipSound,
+            @Nullable ResourceLocation assetId,
+            @Nullable ResourceLocation cameraOverlay,
+            @Nullable MappedEntitySet<EntityType> allowedEntities,
+            boolean dispensable,
+            boolean swappable,
+            boolean damageOnHurt,
+            boolean equipOnInteract,
+            boolean canBeSheared,
+            Sound shearingSound
     ) {
         this.slot = slot;
         this.equipSound = equipSound;
@@ -78,6 +109,8 @@ public class ItemEquippable {
         this.swappable = swappable;
         this.damageOnHurt = damageOnHurt;
         this.equipOnInteract = equipOnInteract;
+        this.canBeSheared = canBeSheared;
+        this.shearingSound = shearingSound;
     }
 
     public static ItemEquippable read(PacketWrapper<?> wrapper) {
@@ -90,9 +123,19 @@ public class ItemEquippable {
         boolean dispensable = wrapper.readBoolean();
         boolean swappable = wrapper.readBoolean();
         boolean damageOnHurt = wrapper.readBoolean();
-        boolean equipOnInteract = wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5) && wrapper.readBoolean();
+        boolean equipOnInteract = false;
+        boolean canBeSheared = false;
+        Sound shearingSound = Sounds.ITEM_SHEARS_SNIP;
+        if (wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5)) {
+            equipOnInteract = wrapper.readBoolean();
+            if (wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_6)) {
+                canBeSheared = wrapper.readBoolean();
+                shearingSound = Sound.read(wrapper);
+            }
+        }
         return new ItemEquippable(slot, equipSound, assetId,
-                cameraOverlay, allowedEntities, dispensable, swappable, damageOnHurt, equipOnInteract);
+                cameraOverlay, allowedEntities, dispensable, swappable,
+                damageOnHurt, equipOnInteract, canBeSheared, shearingSound);
     }
 
     public static void write(PacketWrapper<?> wrapper, ItemEquippable equippable) {
@@ -106,6 +149,10 @@ public class ItemEquippable {
         wrapper.writeBoolean(equippable.damageOnHurt);
         if (wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5)) {
             wrapper.writeBoolean(equippable.equipOnInteract);
+            if (wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_6)) {
+                wrapper.writeBoolean(equippable.canBeSheared);
+                Sound.write(wrapper, equippable.shearingSound);
+            }
         }
     }
 
@@ -187,6 +234,34 @@ public class ItemEquippable {
         this.equipOnInteract = equipOnInteract;
     }
 
+    /**
+     * Added with 1.21.6
+     */
+    public boolean isCanBeSheared() {
+        return this.canBeSheared;
+    }
+
+    /**
+     * Added with 1.21.6
+     */
+    public void setCanBeSheared(boolean canBeSheared) {
+        this.canBeSheared = canBeSheared;
+    }
+
+    /**
+     * Added with 1.21.6
+     */
+    public Sound getShearingSound() {
+        return this.shearingSound;
+    }
+
+    /**
+     * Added with 1.21.6
+     */
+    public void setShearingSound(Sound shearingSound) {
+        this.shearingSound = shearingSound;
+    }
+
     @Deprecated
     public @Nullable ResourceLocation getModel() {
         return this.assetId;
@@ -199,27 +274,28 @@ public class ItemEquippable {
 
     @Override
     public boolean equals(Object obj) {
-        if (this == obj) return true;
         if (!(obj instanceof ItemEquippable)) return false;
         ItemEquippable that = (ItemEquippable) obj;
         if (this.dispensable != that.dispensable) return false;
         if (this.swappable != that.swappable) return false;
         if (this.damageOnHurt != that.damageOnHurt) return false;
+        if (this.equipOnInteract != that.equipOnInteract) return false;
+        if (this.canBeSheared != that.canBeSheared) return false;
         if (this.slot != that.slot) return false;
-        if (!Objects.equals(this.equipSound, that.equipSound)) return false;
+        if (!this.equipSound.equals(that.equipSound)) return false;
         if (!Objects.equals(this.assetId, that.assetId)) return false;
         if (!Objects.equals(this.cameraOverlay, that.cameraOverlay)) return false;
         if (!Objects.equals(this.allowedEntities, that.allowedEntities)) return false;
-        return Objects.equals(this.equipOnInteract, that.equipOnInteract);
+        return this.shearingSound.equals(that.shearingSound);
     }
 
     @Override
     public int hashCode() {
-        return Objects.hash(this.slot, this.equipSound, this.assetId, this.cameraOverlay, this.allowedEntities, this.dispensable, this.swappable, this.damageOnHurt, this.equipOnInteract);
+        return Objects.hash(this.slot, this.equipSound, this.assetId, this.cameraOverlay, this.allowedEntities, this.dispensable, this.swappable, this.damageOnHurt, this.equipOnInteract, this.canBeSheared, this.shearingSound);
     }
 
     @Override
     public String toString() {
-        return "ItemEquippable{slot=" + this.slot + ", equipSound=" + this.equipSound + ", assetId=" + this.assetId + ", cameraOverlay=" + this.cameraOverlay + ", allowedEntities=" + this.allowedEntities + ", dispensable=" + this.dispensable + ", swappable=" + this.swappable + ", damageOnHurt=" + this.damageOnHurt + ", equipOnInteract=" + this.equipOnInteract + '}';
+        return "ItemEquippable{slot=" + this.slot + ", equipSound=" + this.equipSound + ", assetId=" + this.assetId + ", cameraOverlay=" + this.cameraOverlay + ", allowedEntities=" + this.allowedEntities + ", dispensable=" + this.dispensable + ", swappable=" + this.swappable + ", damageOnHurt=" + this.damageOnHurt + ", equipOnInteract=" + this.equipOnInteract + ", canBeSheared=" + this.canBeSheared + ", shearingSound=" + this.shearingSound + '}';
     }
 }

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/CommonDialogData.java

@@ -0,0 +1,121 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog;
+
+import com.github.retrooper.packetevents.protocol.dialog.body.DialogBody;
+import com.github.retrooper.packetevents.protocol.dialog.input.Input;
+import com.github.retrooper.packetevents.protocol.nbt.NBTByte;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.util.adventure.AdventureSerializer;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.text.Component;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+import java.util.List;
+
+@NullMarked
+public final class CommonDialogData {
+
+    private final Component title;
+    private final @Nullable Component externalTitle;
+    private final boolean canCloseWithEscape;
+    private final boolean pause;
+    private final DialogAction afterAction;
+    private final List<DialogBody> body;
+    private final List<Input> inputs;
+
+    public CommonDialogData(
+            Component title, @Nullable Component externalTitle, boolean canCloseWithEscape, boolean pause,
+            DialogAction afterAction, List<DialogBody> body, List<Input> inputs
+    ) {
+        if (pause && !afterAction.isWillUnpause()) {
+            throw new IllegalArgumentException("Dialogs that pause the game must use after_action "
+                    + "values that unpause it after user action!");
+        }
+        this.title = title;
+        this.externalTitle = externalTitle;
+        this.canCloseWithEscape = canCloseWithEscape;
+        this.pause = pause;
+        this.afterAction = afterAction;
+        this.body = body;
+        this.inputs = inputs;
+    }
+
+    public static CommonDialogData decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        Component title = compound.getOrThrow("title", AdventureSerializer.serializer(wrapper), wrapper);
+        Component externalTitle = compound.getOrNull("external_title", AdventureSerializer.serializer(wrapper), wrapper);
+        boolean canCloseWithEscape = compound.getBooleanOr("can_close_with_escape", true);
+        boolean pause = compound.getBooleanOr("pause", true);
+        DialogAction afterAction = compound.getOr("after_action", DialogAction::decode, DialogAction.CLOSE, wrapper);
+        List<DialogBody> body = compound.getListOrEmpty("body", DialogBody::decode, wrapper);
+        List<Input> inputs = compound.getListOrEmpty("inputs", Input::decode, wrapper);
+        return new CommonDialogData(title, externalTitle, canCloseWithEscape, pause, afterAction, body, inputs);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, CommonDialogData data) {
+        compound.set("title", data.title, AdventureSerializer.serializer(wrapper), wrapper);
+        if (data.externalTitle != null) {
+            compound.set("external_title", data.externalTitle, AdventureSerializer.serializer(wrapper), wrapper);
+        }
+        if (!data.canCloseWithEscape) {
+            compound.setTag("can_close_with_escape", new NBTByte(false));
+        }
+        if (!data.pause) {
+            compound.setTag("pause", new NBTByte(false));
+        }
+        if (data.afterAction != DialogAction.CLOSE) {
+            compound.set("after_action", data.afterAction, DialogAction::encode, wrapper);
+        }
+        if (!data.body.isEmpty()) {
+            compound.setCompactList("body", data.body, DialogBody::encode, wrapper);
+        }
+        if (!data.inputs.isEmpty()) {
+            compound.setList("inputs", data.inputs, Input::encode, wrapper);
+        }
+    }
+
+    public Component getTitle() {
+        return this.title;
+    }
+
+    public @Nullable Component getExternalTitle() {
+        return this.externalTitle;
+    }
+
+    public boolean isCanCloseWithEscape() {
+        return this.canCloseWithEscape;
+    }
+
+    public boolean isPause() {
+        return this.pause;
+    }
+
+    public DialogAction getAfterAction() {
+        return this.afterAction;
+    }
+
+    public List<DialogBody> getBody() {
+        return this.body;
+    }
+
+    public List<Input> getInputs() {
+        return this.inputs;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/ConfirmationDialog.java

@@ -0,0 +1,103 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog;
+
+import com.github.retrooper.packetevents.protocol.dialog.button.ActionButton;
+import com.github.retrooper.packetevents.protocol.mapper.AbstractMappedEntity;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
+
+import java.util.Objects;
+
+@NullMarked
+public class ConfirmationDialog extends AbstractMappedEntity implements Dialog {
+
+    private final CommonDialogData common;
+    private final ActionButton yesButton;
+    private final ActionButton noButton;
+
+    public ConfirmationDialog(CommonDialogData common, ActionButton yesButton, ActionButton noButton) {
+        this(null, common, yesButton, noButton);
+    }
+
+    @ApiStatus.Internal
+    public ConfirmationDialog(
+            @Nullable TypesBuilderData data, CommonDialogData common,
+            ActionButton yesButton, ActionButton noButton
+    ) {
+        super(data);
+        this.common = common;
+        this.yesButton = yesButton;
+        this.noButton = noButton;
+    }
+
+    public static ConfirmationDialog decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        CommonDialogData common = CommonDialogData.decode(compound, wrapper);
+        ActionButton yesButton = compound.getOrThrow("yes", ActionButton::decode, wrapper);
+        ActionButton noButton = compound.getOrThrow("no", ActionButton::decode, wrapper);
+        return new ConfirmationDialog(null, common, yesButton, noButton);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, ConfirmationDialog dialog) {
+        CommonDialogData.encode(compound, wrapper, dialog.common);
+        compound.set("yes", dialog.yesButton, ActionButton::encode, wrapper);
+        compound.set("no", dialog.noButton, ActionButton::encode, wrapper);
+    }
+
+    @Override
+    public Dialog copy(@Nullable TypesBuilderData newData) {
+        return new ConfirmationDialog(newData, this.common, this.yesButton, this.noButton);
+    }
+
+    public CommonDialogData getCommon() {
+        return this.common;
+    }
+
+    public ActionButton getYesButton() {
+        return this.yesButton;
+    }
+
+    public ActionButton getNoButton() {
+        return this.noButton;
+    }
+
+    @Override
+    public DialogType<?> getType() {
+        return DialogTypes.CONFIRMATION;
+    }
+
+    @Override
+    public boolean deepEquals(Object obj) {
+        if (!(obj instanceof ConfirmationDialog)) return false;
+        if (!super.equals(obj)) return false;
+        ConfirmationDialog that = (ConfirmationDialog) obj;
+        if (!this.common.equals(that.common)) return false;
+        if (!this.yesButton.equals(that.yesButton)) return false;
+        return this.noButton.equals(that.noButton);
+    }
+
+    @Override
+    public int deepHashCode() {
+        return Objects.hash(super.hashCode(), this.common, this.yesButton, this.noButton);
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/Dialog.java

@@ -0,0 +1,86 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog;
+
+import com.github.retrooper.packetevents.protocol.mapper.CopyableEntity;
+import com.github.retrooper.packetevents.protocol.mapper.DeepComparableEntity;
+import com.github.retrooper.packetevents.protocol.mapper.MappedEntity;
+import com.github.retrooper.packetevents.protocol.nbt.NBT;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTString;
+import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.dialog.DialogLike;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public interface Dialog extends MappedEntity, DeepComparableEntity, CopyableEntity<Dialog>, DialogLike {
+
+    static Dialog read(PacketWrapper<?> wrapper) {
+        return wrapper.readMappedEntityOrDirect(Dialogs.getRegistry(), Dialog::readDirect);
+    }
+
+    static void write(PacketWrapper<?> wrapper, Dialog dialog) {
+        wrapper.writeMappedEntityOrDirect(dialog, Dialog::writeDirect);
+    }
+
+    static Dialog readDirect(PacketWrapper<?> wrapper) {
+        return decodeDirect(wrapper.readNBTRaw(), wrapper, null);
+    }
+
+    static void writeDirect(PacketWrapper<?> wrapper, Dialog dialog) {
+        wrapper.writeNBTRaw(encodeDirect(dialog, wrapper));
+    }
+
+    static Dialog decode(NBT nbt, PacketWrapper<?> wrapper) {
+        if (nbt instanceof NBTString) {
+            return wrapper.replaceRegistry(Dialogs.getRegistry()).getByNameOrThrow(((NBTString) nbt).getValue());
+        }
+        return decodeDirect(nbt, wrapper, null);
+    }
+
+    static NBT encode(PacketWrapper<?> wrapper, Dialog dialog) {
+        if (dialog.isRegistered()) {
+            return new NBTString(dialog.getName().toString());
+        }
+        return encodeDirect(dialog, wrapper);
+    }
+
+    @ApiStatus.Internal
+    static Dialog decodeDirect(NBT nbt, PacketWrapper<?> wrapper, @Nullable TypesBuilderData data) {
+        NBTCompound compound = (NBTCompound) nbt;
+        String dialogTypeName = compound.getStringTagValueOrThrow("type");
+        DialogType<?> dialogType = DialogTypes.getRegistry().getByNameOrThrow(dialogTypeName);
+        // TODO pass down data instead of copying
+        return dialogType.decode(compound, wrapper).copy(data);
+    }
+
+    @ApiStatus.Internal
+    @SuppressWarnings("unchecked") // not unchecked
+    static NBT encodeDirect(Dialog dialog, PacketWrapper<?> wrapper) {
+        NBTCompound compound = new NBTCompound();
+        compound.setTag("type", new NBTString(dialog.getType().getName().toString()));
+        ((DialogType<? super Dialog>) dialog.getType()).encode(compound, wrapper, dialog);
+        return compound;
+    }
+
+    DialogType<?> getType();
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/DialogAction.java

@@ -0,0 +1,61 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBT;
+import com.github.retrooper.packetevents.protocol.nbt.NBTString;
+import com.github.retrooper.packetevents.util.adventure.AdventureIndexUtil;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.util.Index;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public enum DialogAction {
+
+    CLOSE("close", true),
+    NONE("none", false),
+    WAIT_FOR_RESPONSE("wait_for_response", true);
+
+    public static final Index<String, DialogAction> NAME_INDEX = Index.create(
+            DialogAction.class, DialogAction::getName);
+
+    private final String name;
+    private final boolean willUnpause;
+
+    DialogAction(String name, boolean willUnpause) {
+        this.name = name;
+        this.willUnpause = willUnpause;
+    }
+
+    public static DialogAction decode(NBT nbt, PacketWrapper<?> wrapper) {
+        return AdventureIndexUtil.indexValueOrThrow(NAME_INDEX, ((NBTString) nbt).getValue());
+    }
+
+    public static NBT encode(PacketWrapper<?> wrapper, DialogAction action) {
+        return new NBTString(action.name);
+    }
+
+    public String getName() {
+        return this.name;
+    }
+
+    public boolean isWillUnpause() {
+        return this.willUnpause;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/DialogListDialog.java

@@ -0,0 +1,138 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog;
+
+import com.github.retrooper.packetevents.protocol.dialog.button.ActionButton;
+import com.github.retrooper.packetevents.protocol.mapper.AbstractMappedEntity;
+import com.github.retrooper.packetevents.protocol.mapper.MappedEntityRefSet;
+import com.github.retrooper.packetevents.protocol.mapper.MappedEntitySet;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTInt;
+import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
+
+import java.util.Objects;
+
+@NullMarked
+public class DialogListDialog extends AbstractMappedEntity implements Dialog {
+
+    private final CommonDialogData common;
+    private final MappedEntityRefSet<Dialog> dialogs;
+    private final @Nullable ActionButton exitAction;
+    private final int columns;
+    private final int buttonWidth;
+
+    public DialogListDialog(
+            CommonDialogData common,
+            MappedEntityRefSet<Dialog> dialogs,
+            @Nullable ActionButton exitAction,
+            int columns, int buttonWidth
+    ) {
+        this(null, common, dialogs, exitAction, columns, buttonWidth);
+    }
+
+    @ApiStatus.Internal
+    public DialogListDialog(
+            @Nullable TypesBuilderData data,
+            CommonDialogData common,
+            MappedEntityRefSet<Dialog> dialogs,
+            @Nullable ActionButton exitAction,
+            int columns, int buttonWidth
+    ) {
+        super(data);
+        this.common = common;
+        this.dialogs = dialogs;
+        this.exitAction = exitAction;
+        this.columns = columns;
+        this.buttonWidth = buttonWidth;
+    }
+
+    public static DialogListDialog decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        CommonDialogData common = CommonDialogData.decode(compound, wrapper);
+        MappedEntityRefSet<Dialog> dialogs = compound.getOrThrow("dialogs", MappedEntitySet::decodeRefSet, wrapper);
+        ActionButton action = compound.getOrNull("exit_action", ActionButton::decode, wrapper);
+        int columns = compound.getNumberTagValueOrDefault("columns", 2).intValue();
+        int buttonWidth = compound.getNumberTagValueOrDefault("button_width", 150).intValue();
+        return new DialogListDialog(null, common, dialogs, action, columns, buttonWidth);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, DialogListDialog dialog) {
+        CommonDialogData.encode(compound, wrapper, dialog.common);
+        compound.set("dialogs", dialog.dialogs, MappedEntitySet::encodeRefSet, wrapper);
+        if (dialog.exitAction != null) {
+            compound.set("exit_action", dialog.exitAction, ActionButton::encode, wrapper);
+        }
+        if (dialog.columns != 2) {
+            compound.setTag("columns", new NBTInt(dialog.columns));
+        }
+        if (dialog.buttonWidth != 150) {
+            compound.setTag("button_width", new NBTInt(dialog.buttonWidth));
+        }
+    }
+
+    @Override
+    public Dialog copy(@Nullable TypesBuilderData newData) {
+        return new DialogListDialog(newData, this.common, this.dialogs, this.exitAction, this.columns, this.buttonWidth);
+    }
+
+    public CommonDialogData getCommon() {
+        return this.common;
+    }
+
+    public MappedEntityRefSet<Dialog> getDialogs() {
+        return this.dialogs;
+    }
+
+    public @Nullable ActionButton getExitAction() {
+        return this.exitAction;
+    }
+
+    public int getColumns() {
+        return this.columns;
+    }
+
+    public int getButtonWidth() {
+        return this.buttonWidth;
+    }
+
+    @Override
+    public DialogType<?> getType() {
+        return DialogTypes.DIALOG_LIST;
+    }
+
+    @Override
+    public boolean deepEquals(Object obj) {
+        if (!(obj instanceof DialogListDialog)) return false;
+        if (!super.equals(obj)) return false;
+        DialogListDialog that = (DialogListDialog) obj;
+        if (this.columns != that.columns) return false;
+        if (this.buttonWidth != that.buttonWidth) return false;
+        if (!this.common.equals(that.common)) return false;
+        if (!this.dialogs.equals(that.dialogs)) return false;
+        return Objects.equals(this.exitAction, that.exitAction);
+    }
+
+    @Override
+    public int deepHashCode() {
+        return Objects.hash(super.hashCode(), this.common, this.dialogs, this.exitAction, this.columns, this.buttonWidth);
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/DialogType.java

@@ -0,0 +1,32 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog;
+
+import com.github.retrooper.packetevents.protocol.mapper.MappedEntity;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public interface DialogType<T extends Dialog> extends MappedEntity {
+
+    T decode(NBTCompound compound, PacketWrapper<?> wrapper);
+
+    void encode(NBTCompound compound, PacketWrapper<?> wrapper, T dialog);
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/DialogTypes.java

@@ -0,0 +1,58 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog;
+
+import com.github.retrooper.packetevents.protocol.util.NbtMapDecoder;
+import com.github.retrooper.packetevents.protocol.util.NbtMapEncoder;
+import com.github.retrooper.packetevents.util.mappings.VersionedRegistry;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public final class DialogTypes {
+
+    private static final VersionedRegistry<DialogType<?>> REGISTRY = new VersionedRegistry<>("dialog_type");
+
+    private DialogTypes() {
+    }
+
+    public static VersionedRegistry<DialogType<?>> getRegistry() {
+        return REGISTRY;
+    }
+
+    @ApiStatus.Internal
+    public static <T extends Dialog> DialogType<T> define(String name, NbtMapDecoder<T> decoder, NbtMapEncoder<T> encoder) {
+        return REGISTRY.define(name, data -> new StaticDialogType<>(data, decoder, encoder));
+    }
+
+    public static final DialogType<NoticeDialog> NOTICE = define("notice",
+            NoticeDialog::decode, NoticeDialog::encode);
+    public static final DialogType<ServerLinksDialog> SERVER_LINKS = define("server_links",
+            ServerLinksDialog::decode, ServerLinksDialog::encode);
+    public static final DialogType<DialogListDialog> DIALOG_LIST = define("dialog_list",
+            DialogListDialog::decode, DialogListDialog::encode);
+    public static final DialogType<MultiActionDialog> MULTI_ACTION = define("multi_action",
+            MultiActionDialog::decode, MultiActionDialog::encode);
+    public static final DialogType<ConfirmationDialog> CONFIRMATION = define("confirmation",
+            ConfirmationDialog::decode, ConfirmationDialog::encode);
+
+    static {
+        REGISTRY.unloadMappings();
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/Dialogs.java

@@ -0,0 +1,101 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog;
+
+import com.github.retrooper.packetevents.protocol.dialog.button.ActionButton;
+import com.github.retrooper.packetevents.protocol.dialog.button.CommonButtonData;
+import com.github.retrooper.packetevents.protocol.mapper.MappedEntitySet;
+import com.github.retrooper.packetevents.resources.ResourceLocation;
+import com.github.retrooper.packetevents.util.mappings.VersionedRegistry;
+import net.kyori.adventure.text.Component;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+import java.util.Collections;
+
+@NullMarked
+public final class Dialogs {
+
+    private static final ActionButton DEFAULT_BACK_BUTTON = new ActionButton(
+            new CommonButtonData(Component.translatable("gui.back"), null, 200),
+            null);
+
+    private static final VersionedRegistry<Dialog> REGISTRY = new VersionedRegistry<>("dialog");
+
+    private Dialogs() {
+    }
+
+    @ApiStatus.Internal
+    public static Dialog define(String name, Dialog dialog) {
+        return REGISTRY.define(name, dialog::copy);
+    }
+
+    public static VersionedRegistry<Dialog> getRegistry() {
+        return REGISTRY;
+    }
+
+    public static final Dialog SERVER_LINKS = define("server_links", new ServerLinksDialog(
+            new CommonDialogData(
+                    Component.translatable("menu.server_links.title"),
+                    Component.translatable("menu.server_links"),
+                    true,
+                    true,
+                    DialogAction.CLOSE,
+                    Collections.emptyList(),
+                    Collections.emptyList()
+            ),
+            DEFAULT_BACK_BUTTON,
+            1,
+            310
+    ));
+    public static final Dialog CUSTOM_OPTIONS = define("custom_options", new DialogListDialog(
+            new CommonDialogData(
+                    Component.translatable("menu.custom_options.title"),
+                    Component.translatable("menu.custom_options"),
+                    true,
+                    true,
+                    DialogAction.CLOSE,
+                    Collections.emptyList(),
+                    Collections.emptyList()
+            ),
+            new MappedEntitySet<>(new ResourceLocation("pause_screen_additions")),
+            DEFAULT_BACK_BUTTON,
+            1,
+            310
+    ));
+    public static final Dialog QUICK_ACTIONS = define("quick_actions", new DialogListDialog(
+            new CommonDialogData(
+                    Component.translatable("menu.quick_actions.title"),
+                    Component.translatable("menu.quick_actions"),
+                    true,
+                    true,
+                    DialogAction.CLOSE,
+                    Collections.emptyList(),
+                    Collections.emptyList()
+            ),
+            new MappedEntitySet<>(new ResourceLocation("quick_actions")),
+            DEFAULT_BACK_BUTTON,
+            1,
+            310
+    ));
+
+    static {
+        REGISTRY.unloadMappings();
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/MultiActionDialog.java

@@ -0,0 +1,127 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog;
+
+import com.github.retrooper.packetevents.protocol.dialog.button.ActionButton;
+import com.github.retrooper.packetevents.protocol.mapper.AbstractMappedEntity;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTInt;
+import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
+
+import java.util.List;
+import java.util.Objects;
+
+@NullMarked
+public class MultiActionDialog extends AbstractMappedEntity implements Dialog {
+
+    private final CommonDialogData common;
+    private final List<ActionButton> actions;
+    private final @Nullable ActionButton exitAction;
+    private final int columns;
+
+    public MultiActionDialog(
+            CommonDialogData common,
+            List<ActionButton> actions,
+            @Nullable ActionButton exitAction,
+            int columns
+    ) {
+        this(null, common, actions, exitAction, columns);
+    }
+
+    @ApiStatus.Internal
+    public MultiActionDialog(
+            @Nullable TypesBuilderData data,
+            CommonDialogData common,
+            List<ActionButton> actions,
+            @Nullable ActionButton exitAction,
+            int columns
+    ) {
+        super(data);
+        this.common = common;
+        this.actions = actions;
+        this.exitAction = exitAction;
+        this.columns = columns;
+    }
+
+    public static MultiActionDialog decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        CommonDialogData common = CommonDialogData.decode(compound, wrapper);
+        List<ActionButton> actions = compound.getListOrThrow("actions", ActionButton::decode, wrapper);
+        ActionButton action = compound.getOrNull("exit_action", ActionButton::decode, wrapper);
+        int columns = compound.getNumberTagValueOrDefault("columns", 2).intValue();
+        int buttonWidth = compound.getNumberTagValueOrDefault("button_width", 150).intValue();
+        return new MultiActionDialog(null, common, actions, action, columns);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, MultiActionDialog dialog) {
+        CommonDialogData.encode(compound, wrapper, dialog.common);
+        compound.setList("actions", dialog.actions, ActionButton::encode, wrapper);
+        if (dialog.exitAction != null) {
+            compound.set("exit_action", dialog.exitAction, ActionButton::encode, wrapper);
+        }
+        if (dialog.columns != 2) {
+            compound.setTag("columns", new NBTInt(dialog.columns));
+        }
+    }
+
+    @Override
+    public Dialog copy(@Nullable TypesBuilderData newData) {
+        return new MultiActionDialog(newData, this.common, this.actions, this.exitAction, this.columns);
+    }
+
+    public CommonDialogData getCommon() {
+        return this.common;
+    }
+
+    public List<ActionButton> getActions() {
+        return this.actions;
+    }
+
+    public @Nullable ActionButton getExitAction() {
+        return this.exitAction;
+    }
+
+    public int getColumns() {
+        return this.columns;
+    }
+
+    @Override
+    public DialogType<?> getType() {
+        return DialogTypes.MULTI_ACTION;
+    }
+
+    @Override
+    public boolean deepEquals(Object obj) {
+        if (!(obj instanceof MultiActionDialog)) return false;
+        if (!super.equals(obj)) return false;
+        MultiActionDialog that = (MultiActionDialog) obj;
+        if (this.columns != that.columns) return false;
+        if (!this.common.equals(that.common)) return false;
+        if (!this.actions.equals(that.actions)) return false;
+        return Objects.equals(this.exitAction, that.exitAction);
+    }
+
+    @Override
+    public int deepHashCode() {
+        return Objects.hash(super.hashCode(), this.common, this.actions, this.exitAction, this.columns);
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/NoticeDialog.java

@@ -0,0 +1,100 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog;
+
+import com.github.retrooper.packetevents.protocol.dialog.button.ActionButton;
+import com.github.retrooper.packetevents.protocol.dialog.button.CommonButtonData;
+import com.github.retrooper.packetevents.protocol.mapper.AbstractMappedEntity;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.text.Component;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
+
+import java.util.Objects;
+
+@NullMarked
+public class NoticeDialog extends AbstractMappedEntity implements Dialog {
+
+    public static final ActionButton DEFAULT_ACTION = new ActionButton(
+            new CommonButtonData(Component.translatable("gui.ok"), null, 150),
+            null
+    );
+
+    private final CommonDialogData common;
+    private final ActionButton action;
+
+    public NoticeDialog(CommonDialogData common, ActionButton action) {
+        this(null, common, action);
+    }
+
+    @ApiStatus.Internal
+    public NoticeDialog(@Nullable TypesBuilderData data, CommonDialogData common, ActionButton action) {
+        super(data);
+        this.common = common;
+        this.action = action;
+    }
+
+    public static NoticeDialog decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        CommonDialogData common = CommonDialogData.decode(compound, wrapper);
+        ActionButton action = compound.getOr("action", ActionButton::decode, DEFAULT_ACTION, wrapper);
+        return new NoticeDialog(null, common, action);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, NoticeDialog dialog) {
+        CommonDialogData.encode(compound, wrapper, dialog.common);
+        if (dialog.action != DEFAULT_ACTION) {
+            compound.set("action", dialog.action, ActionButton::encode, wrapper);
+        }
+    }
+
+    @Override
+    public Dialog copy(@Nullable TypesBuilderData newData) {
+        return new NoticeDialog(newData, this.common, this.action);
+    }
+
+    public CommonDialogData getCommon() {
+        return this.common;
+    }
+
+    public ActionButton getAction() {
+        return this.action;
+    }
+
+    @Override
+    public DialogType<?> getType() {
+        return DialogTypes.NOTICE;
+    }
+
+    @Override
+    public boolean deepEquals(Object obj) {
+        if (!(obj instanceof NoticeDialog)) return false;
+        if (!super.equals(obj)) return false;
+        NoticeDialog that = (NoticeDialog) obj;
+        if (!this.common.equals(that.common)) return false;
+        return this.action.equals(that.action);
+    }
+
+    @Override
+    public int deepHashCode() {
+        return Objects.hash(super.hashCode(), this.common, this.action);
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/ServerLinksDialog.java

@@ -0,0 +1,125 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog;
+
+import com.github.retrooper.packetevents.protocol.dialog.button.ActionButton;
+import com.github.retrooper.packetevents.protocol.mapper.AbstractMappedEntity;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTInt;
+import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
+
+import java.util.Objects;
+
+@NullMarked
+public class ServerLinksDialog extends AbstractMappedEntity implements Dialog {
+
+    private final CommonDialogData common;
+    private final @Nullable ActionButton exitAction;
+    private final int columns;
+    private final int buttonWidth;
+
+    public ServerLinksDialog(
+            CommonDialogData common,
+            @Nullable ActionButton exitAction,
+            int columns, int buttonWidth
+    ) {
+        this(null, common, exitAction, columns, buttonWidth);
+    }
+
+    @ApiStatus.Internal
+    public ServerLinksDialog(
+            @Nullable TypesBuilderData data,
+            CommonDialogData common,
+            @Nullable ActionButton exitAction,
+            int columns, int buttonWidth
+    ) {
+        super(data);
+        this.common = common;
+        this.exitAction = exitAction;
+        this.columns = columns;
+        this.buttonWidth = buttonWidth;
+    }
+
+    public static ServerLinksDialog decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        CommonDialogData common = CommonDialogData.decode(compound, wrapper);
+        ActionButton action = compound.getOrNull("exit_action", ActionButton::decode, wrapper);
+        int columns = compound.getNumberTagValueOrDefault("columns", 2).intValue();
+        int buttonWidth = compound.getNumberTagValueOrDefault("button_width", 150).intValue();
+        return new ServerLinksDialog(null, common, action, columns, buttonWidth);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, ServerLinksDialog dialog) {
+        CommonDialogData.encode(compound, wrapper, dialog.common);
+        if (dialog.exitAction != null) {
+            compound.set("exit_action", dialog.exitAction, ActionButton::encode, wrapper);
+        }
+        if (dialog.columns != 2) {
+            compound.setTag("columns", new NBTInt(dialog.columns));
+        }
+        if (dialog.buttonWidth != 150) {
+            compound.setTag("button_width", new NBTInt(dialog.buttonWidth));
+        }
+    }
+
+    @Override
+    public Dialog copy(@Nullable TypesBuilderData newData) {
+        return new ServerLinksDialog(newData, this.common, this.exitAction, this.columns, this.buttonWidth);
+    }
+
+    public CommonDialogData getCommon() {
+        return this.common;
+    }
+
+    public @Nullable ActionButton getExitAction() {
+        return this.exitAction;
+    }
+
+    public int getColumns() {
+        return this.columns;
+    }
+
+    public int getButtonWidth() {
+        return this.buttonWidth;
+    }
+
+    @Override
+    public DialogType<?> getType() {
+        return DialogTypes.SERVER_LINKS;
+    }
+
+    @Override
+    public boolean deepEquals(Object obj) {
+        if (!(obj instanceof ServerLinksDialog)) return false;
+        if (!super.equals(obj)) return false;
+        ServerLinksDialog that = (ServerLinksDialog) obj;
+        if (this.columns != that.columns) return false;
+        if (this.buttonWidth != that.buttonWidth) return false;
+        if (!this.common.equals(that.common)) return false;
+        return Objects.equals(this.exitAction, that.exitAction);
+    }
+
+    @Override
+    public int deepHashCode() {
+        return Objects.hash(super.hashCode(), this.common, this.exitAction, this.columns, this.buttonWidth);
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/StaticDialogType.java

@@ -0,0 +1,53 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog;
+
+import com.github.retrooper.packetevents.protocol.mapper.AbstractMappedEntity;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.util.NbtMapDecoder;
+import com.github.retrooper.packetevents.protocol.util.NbtMapEncoder;
+import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class StaticDialogType<T extends Dialog> extends AbstractMappedEntity implements DialogType<T> {
+
+    private final NbtMapDecoder<T> decoder;
+    private final NbtMapEncoder<T> encoder;
+
+    @ApiStatus.Internal
+    public StaticDialogType(@Nullable TypesBuilderData data, NbtMapDecoder<T> decoder, NbtMapEncoder<T> encoder) {
+        super(data);
+        this.decoder = decoder;
+        this.encoder = encoder;
+    }
+
+    @Override
+    public T decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        return this.decoder.decode(compound, wrapper);
+    }
+
+    @Override
+    public void encode(NBTCompound compound, PacketWrapper<?> wrapper, T dialog) {
+        this.encoder.encode(compound, wrapper, dialog);
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/action/Action.java

@@ -0,0 +1,46 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.action;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBT;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.resources.ResourceLocation;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public interface Action {
+
+    static Action decode(NBT nbt, PacketWrapper<?> wrapper) {
+        NBTCompound compound = (NBTCompound) nbt;
+        String typeName = compound.getStringTagValueOrThrow("type");
+        ActionType<?> action = ActionTypes.getRegistry().getByNameOrThrow(typeName);
+        return action.decode(compound, wrapper);
+    }
+
+    @SuppressWarnings("unchecked") // not unchecked
+    static NBT encode(PacketWrapper<?> wrapper, Action action) {
+        NBTCompound compound = new NBTCompound();
+        compound.set("type", action.getType().getName(), ResourceLocation::encode, wrapper);
+        ((ActionType<? super Action>) action.getType()).encode(compound, wrapper, action);
+        return compound;
+    }
+
+    ActionType<?> getType();
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/action/ActionType.java

@@ -0,0 +1,32 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.action;
+
+import com.github.retrooper.packetevents.protocol.mapper.MappedEntity;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public interface ActionType<T extends Action> extends MappedEntity {
+
+    T decode(NBTCompound compound, PacketWrapper<?> wrapper);
+
+    void encode(NBTCompound compound, PacketWrapper<?> wrapper, T action);
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/action/ActionTypes.java

@@ -0,0 +1,66 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.action;
+
+import com.github.retrooper.packetevents.protocol.util.NbtMapDecoder;
+import com.github.retrooper.packetevents.protocol.util.NbtMapEncoder;
+import com.github.retrooper.packetevents.util.mappings.VersionedRegistry;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public final class ActionTypes {
+
+    private static final VersionedRegistry<ActionType<?>> REGISTRY = new VersionedRegistry<>("dialog_action_type");
+
+    private ActionTypes() {
+    }
+
+    @ApiStatus.Internal
+    public static <T extends Action> ActionType<T> define(String name, NbtMapDecoder<T> decoder, NbtMapEncoder<T> encoder) {
+        return REGISTRY.define(name, data -> new StaticActionType<>(data, decoder, encoder));
+    }
+
+    public static final ActionType<StaticAction> OPEN_URL = define("open_url",
+            StaticAction::decode, StaticAction::encode);
+    public static final ActionType<StaticAction> RUN_COMMAND = define("run_command",
+            StaticAction::decode, StaticAction::encode);
+    public static final ActionType<StaticAction> SUGGEST_COMMAND = define("suggest_command",
+            StaticAction::decode, StaticAction::encode);
+    public static final ActionType<StaticAction> SHOW_DIALOG = define("show_dialog",
+            StaticAction::decode, StaticAction::encode);
+    public static final ActionType<StaticAction> CHANGE_PAGE = define("change_page",
+            StaticAction::decode, StaticAction::encode);
+    public static final ActionType<StaticAction> COPY_TO_CLIPBOARD = define("copy_to_clipboard",
+            StaticAction::decode, StaticAction::encode);
+    public static final ActionType<StaticAction> CUSTOM = define("custom",
+            StaticAction::decode, StaticAction::encode);
+    public static final ActionType<DynamicRunCommandAction> DYNAMIC_RUN_COMMAND = define("dynamic/run_command",
+            DynamicRunCommandAction::decode, DynamicRunCommandAction::encode);
+    public static final ActionType<DynamicCustomAction> DYNAMIC_CUSTOM = define("dynamic/custom",
+            DynamicCustomAction::decode, DynamicCustomAction::encode);
+
+    public static VersionedRegistry<ActionType<?>> getRegistry() {
+        return REGISTRY;
+    }
+
+    static {
+        REGISTRY.unloadMappings();
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/action/DialogTemplate.java

@@ -0,0 +1,49 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.action;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBT;
+import com.github.retrooper.packetevents.protocol.nbt.NBTString;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+/**
+ * This uses the same format as command function macros.
+ */
+@NullMarked
+public class DialogTemplate {
+
+    private final String raw;
+
+    public DialogTemplate(String raw) {
+        this.raw = raw;
+    }
+
+    public static DialogTemplate decode(NBT nbt, PacketWrapper<?> wrapper) {
+        return new DialogTemplate(((NBTString) nbt).getValue());
+    }
+
+    public static NBT encode(PacketWrapper<?> wrapper, DialogTemplate template) {
+        return new NBTString(template.raw);
+    }
+
+    public String getRaw() {
+        return this.raw;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/action/DynamicCustomAction.java

@@ -0,0 +1,63 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.action;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.resources.ResourceLocation;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+@NullMarked
+public class DynamicCustomAction implements Action {
+
+    private final ResourceLocation id;
+    private final @Nullable NBTCompound additions;
+
+    public DynamicCustomAction(ResourceLocation id, @Nullable NBTCompound additions) {
+        this.id = id;
+        this.additions = additions;
+    }
+
+    public static DynamicCustomAction decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        ResourceLocation id = compound.getOrThrow("id", ResourceLocation::decode, wrapper);
+        NBTCompound additions = compound.getCompoundTagOrNull("additions");
+        return new DynamicCustomAction(id, additions);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, DynamicCustomAction action) {
+        compound.set("id", action.id, ResourceLocation::encode, wrapper);
+        if (action.additions != null) {
+            compound.setTag("additions", action.additions);
+        }
+    }
+
+    @Override
+    public ActionType<?> getType() {
+        return ActionTypes.DYNAMIC_CUSTOM;
+    }
+
+    public ResourceLocation getId() {
+        return this.id;
+    }
+
+    public @Nullable NBTCompound getAdditions() {
+        return this.additions;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/action/DynamicRunCommandAction.java

@@ -0,0 +1,51 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.action;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class DynamicRunCommandAction implements Action {
+
+    private final DialogTemplate template;
+
+    public DynamicRunCommandAction(DialogTemplate template) {
+        this.template = template;
+    }
+
+    public static DynamicRunCommandAction decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        DialogTemplate template = compound.getOrThrow("template", DialogTemplate::decode, wrapper);
+        return new DynamicRunCommandAction(template);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, DynamicRunCommandAction action) {
+        compound.set("template", action.template, DialogTemplate::encode, wrapper);
+    }
+
+    public DialogTemplate getTemplate() {
+        return this.template;
+    }
+
+    @Override
+    public ActionType<?> getType() {
+        return ActionTypes.DYNAMIC_RUN_COMMAND;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/action/StaticAction.java

@@ -0,0 +1,63 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.action;
+
+import com.github.retrooper.packetevents.protocol.chat.clickevent.ClickEvent;
+import com.github.retrooper.packetevents.protocol.chat.clickevent.ClickEventAction;
+import com.github.retrooper.packetevents.protocol.chat.clickevent.ClickEventActions;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class StaticAction implements Action {
+
+    private final ActionType<?> actionType;
+    private final ClickEvent clickEvent;
+
+    public StaticAction(ClickEvent clickEvent) {
+        if (!clickEvent.getAction().isAllowFromServer()) {
+            throw new IllegalArgumentException("Can't create action for unreadable "
+                    + "click event with action " + clickEvent.getAction());
+        }
+        this.actionType = ActionTypes.getRegistry().getByNameOrThrow(clickEvent.getAction().getName());
+        this.clickEvent = clickEvent;
+    }
+
+    public static StaticAction decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        String actionName = compound.getStringTagValueOrThrow("type");
+        ClickEventAction<?> action = ClickEventActions.getRegistry().getByNameOrThrow(actionName);
+        ClickEvent clickEvent = action.decode(compound, wrapper);
+        return new StaticAction(clickEvent);
+    }
+
+    @SuppressWarnings("unchecked")
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, StaticAction action) {
+        ((ClickEventAction<? super ClickEvent>) action.clickEvent.getAction()).encode(compound, wrapper, action.clickEvent);
+    }
+
+    @Override
+    public ActionType<?> getType() {
+        return this.actionType;
+    }
+
+    public ClickEvent getClickEvent() {
+        return this.clickEvent;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/action/StaticActionType.java

@@ -0,0 +1,53 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.action;
+
+import com.github.retrooper.packetevents.protocol.mapper.AbstractMappedEntity;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.util.NbtMapDecoder;
+import com.github.retrooper.packetevents.protocol.util.NbtMapEncoder;
+import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class StaticActionType<T extends Action> extends AbstractMappedEntity implements ActionType<T> {
+
+    private final NbtMapDecoder<T> decoder;
+    private final NbtMapEncoder<T> encoder;
+
+    @ApiStatus.Internal
+    public StaticActionType(@Nullable TypesBuilderData data, NbtMapDecoder<T> decoder, NbtMapEncoder<T> encoder) {
+        super(data);
+        this.decoder = decoder;
+        this.encoder = encoder;
+    }
+
+    @Override
+    public T decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        return this.decoder.decode(compound, wrapper);
+    }
+
+    @Override
+    public void encode(NBTCompound compound, PacketWrapper<?> wrapper, T action) {
+        this.encoder.encode(compound, wrapper, action);
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/body/DialogBody.java

@@ -0,0 +1,46 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.body;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBT;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.resources.ResourceLocation;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public interface DialogBody {
+
+    static DialogBody decode(NBT nbt, PacketWrapper<?> wrapper) {
+        NBTCompound compound = (NBTCompound) nbt;
+        String typeName = compound.getStringTagValueOrThrow("type");
+        DialogBodyType<?> type = DialogBodyTypes.getRegistry().getByNameOrThrow(typeName);
+        return type.decode(compound, wrapper);
+    }
+
+    @SuppressWarnings("unchecked") // not unchecked
+    static NBT encode(PacketWrapper<?> wrapper, DialogBody body) {
+        NBTCompound compound = new NBTCompound();
+        compound.set("type", body.getType().getName(), ResourceLocation::encode, wrapper);
+        ((DialogBodyType<? super DialogBody>) body.getType()).encode(compound, wrapper, body);
+        return compound;
+    }
+
+    DialogBodyType<?> getType();
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/body/DialogBodyType.java

@@ -0,0 +1,32 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.body;
+
+import com.github.retrooper.packetevents.protocol.mapper.MappedEntity;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public interface DialogBodyType<T extends DialogBody> extends MappedEntity {
+
+    T decode(NBTCompound compound, PacketWrapper<?> wrapper);
+
+    void encode(NBTCompound compound, PacketWrapper<?> wrapper, T dialogBody);
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/body/DialogBodyTypes.java

@@ -0,0 +1,52 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.body;
+
+import com.github.retrooper.packetevents.protocol.util.NbtMapDecoder;
+import com.github.retrooper.packetevents.protocol.util.NbtMapEncoder;
+import com.github.retrooper.packetevents.util.mappings.VersionedRegistry;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public final class DialogBodyTypes {
+
+    private static final VersionedRegistry<DialogBodyType<?>> REGISTRY = new VersionedRegistry<>("dialog_body_type");
+
+    private DialogBodyTypes() {
+    }
+
+    @ApiStatus.Internal
+    public static <T extends DialogBody> DialogBodyType<T> define(String name, NbtMapDecoder<T> decoder, NbtMapEncoder<T> encoder) {
+        return REGISTRY.define(name, data -> new StaticDialogBodyType<>(data, decoder, encoder));
+    }
+
+    public static VersionedRegistry<DialogBodyType<?>> getRegistry() {
+        return REGISTRY;
+    }
+
+    public static final DialogBodyType<ItemDialogBody> ITEM = define("item",
+            ItemDialogBody::decode, ItemDialogBody::encode);
+    public static final DialogBodyType<PlainMessageDialogBody> PLAIN_MESSAGE = define("plain_message",
+            PlainMessageDialogBody::decode, PlainMessageDialogBody::encode);
+
+    static {
+        REGISTRY.unloadMappings();
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/body/ItemDialogBody.java

@@ -0,0 +1,109 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.body;
+
+import com.github.retrooper.packetevents.protocol.item.ItemStack;
+import com.github.retrooper.packetevents.protocol.nbt.NBTByte;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTInt;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+@NullMarked
+public class ItemDialogBody implements DialogBody {
+
+    private final ItemStack item;
+    private final @Nullable PlainMessage description;
+    private final boolean showDecorations;
+    private final boolean showTooltip;
+    private final int width;
+    private final int height;
+
+    public ItemDialogBody(
+            ItemStack item, @Nullable PlainMessage description,
+            boolean showDecorations, boolean showTooltip,
+            int width, int height
+    ) {
+        this.item = item;
+        this.description = description;
+        this.showDecorations = showDecorations;
+        this.showTooltip = showTooltip;
+        this.width = width;
+        this.height = height;
+    }
+
+    public static ItemDialogBody decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        ItemStack item = compound.getOrThrow("item", ItemStack::decode, wrapper);
+        PlainMessage description = compound.getOrNull("description", PlainMessage::decode, wrapper);
+        boolean showDecorations = compound.getBooleanOr("show_decorations", true);
+        boolean showTooltip = compound.getBooleanOr("show_tooltip", true);
+        int width = compound.getNumberTagValueOrDefault("width", 16).intValue();
+        int height = compound.getNumberTagValueOrDefault("height", 16).intValue();
+        return new ItemDialogBody(item, description, showDecorations, showTooltip, width, height);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, ItemDialogBody body) {
+        compound.set("item", body.item, ItemStack::encode, wrapper);
+        if (body.description != null) {
+            compound.set("description", body.description, PlainMessage::encode, wrapper);
+        }
+        if (!body.showDecorations) {
+            compound.setTag("show_decorations", new NBTByte(false));
+        }
+        if (!body.showTooltip) {
+            compound.setTag("show_tooltip", new NBTByte(false));
+        }
+        if (body.width != 16) {
+            compound.setTag("width", new NBTInt(body.width));
+        }
+        if (body.height != 16) {
+            compound.setTag("height", new NBTInt(body.height));
+        }
+    }
+
+    @Override
+    public DialogBodyType<?> getType() {
+        return DialogBodyTypes.ITEM;
+    }
+
+    public ItemStack getItem() {
+        return this.item;
+    }
+
+    public @Nullable PlainMessage getDescription() {
+        return this.description;
+    }
+
+    public boolean isShowDecorations() {
+        return this.showDecorations;
+    }
+
+    public boolean isShowTooltip() {
+        return this.showTooltip;
+    }
+
+    public int getWidth() {
+        return this.width;
+    }
+
+    public int getHeight() {
+        return this.height;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/body/PlainMessage.java

@@ -0,0 +1,70 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.body;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBT;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTInt;
+import com.github.retrooper.packetevents.util.adventure.AdventureSerializer;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.text.Component;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class PlainMessage {
+
+    private final Component contents;
+    private final int width;
+
+    public PlainMessage(Component contents, int width) {
+        this.contents = contents;
+        this.width = width;
+    }
+
+    public static PlainMessage decode(NBT nbt, PacketWrapper<?> wrapper) {
+        return decode((NBTCompound) nbt, wrapper);
+    }
+
+    public static PlainMessage decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        Component contents = compound.getOrThrow("contents", AdventureSerializer.serializer(wrapper), wrapper);
+        int width = compound.getNumberTagValueOrDefault("width", 200).intValue();
+        return new PlainMessage(contents, width);
+    }
+
+    public static NBT encode(PacketWrapper<?> wrapper, PlainMessage message) {
+        NBTCompound compound = new NBTCompound();
+        encode(compound, wrapper, message);
+        return compound;
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, PlainMessage message) {
+        compound.set("contents", message.contents, AdventureSerializer.serializer(wrapper), wrapper);
+        if (message.width != 200) {
+            compound.setTag("width", new NBTInt(message.width));
+        }
+    }
+
+    public Component getContents() {
+        return this.contents;
+    }
+
+    public int getWidth() {
+        return this.width;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/body/PlainMessageDialogBody.java

@@ -0,0 +1,50 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.body;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class PlainMessageDialogBody implements DialogBody {
+
+    private final PlainMessage message;
+
+    public PlainMessageDialogBody(PlainMessage message) {
+        this.message = message;
+    }
+
+    public static PlainMessageDialogBody decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        return new PlainMessageDialogBody(PlainMessage.decode(compound, wrapper));
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, PlainMessageDialogBody body) {
+        PlainMessage.encode(compound, wrapper, body.message);
+    }
+
+    @Override
+    public DialogBodyType<?> getType() {
+        return DialogBodyTypes.PLAIN_MESSAGE;
+    }
+
+    public PlainMessage getMessage() {
+        return this.message;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/body/StaticDialogBodyType.java

@@ -0,0 +1,53 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.body;
+
+import com.github.retrooper.packetevents.protocol.mapper.AbstractMappedEntity;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.util.NbtMapDecoder;
+import com.github.retrooper.packetevents.protocol.util.NbtMapEncoder;
+import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class StaticDialogBodyType<T extends DialogBody> extends AbstractMappedEntity implements DialogBodyType<T> {
+
+    private final NbtMapDecoder<T> decoder;
+    private final NbtMapEncoder<T> encoder;
+
+    @ApiStatus.Internal
+    public StaticDialogBodyType(@Nullable TypesBuilderData data, NbtMapDecoder<T> decoder, NbtMapEncoder<T> encoder) {
+        super(data);
+        this.decoder = decoder;
+        this.encoder = encoder;
+    }
+
+    @Override
+    public T decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        return this.decoder.decode(compound, wrapper);
+    }
+
+    @Override
+    public void encode(NBTCompound compound, PacketWrapper<?> wrapper, T dialogBody) {
+        this.encoder.encode(compound, wrapper, dialogBody);
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/button/ActionButton.java

@@ -0,0 +1,62 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.button;
+
+import com.github.retrooper.packetevents.protocol.dialog.action.Action;
+import com.github.retrooper.packetevents.protocol.nbt.NBT;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+@NullMarked
+public class ActionButton {
+
+    private final CommonButtonData button;
+    private final @Nullable Action action;
+
+    public ActionButton(CommonButtonData button, @Nullable Action action) {
+        this.button = button;
+        this.action = action;
+    }
+
+    public static ActionButton decode(NBT nbt, PacketWrapper<?> wrapper) {
+        NBTCompound compound = (NBTCompound) nbt;
+        CommonButtonData button = CommonButtonData.decode(compound, wrapper);
+        Action action = compound.getOrNull("action", Action::decode, wrapper);
+        return new ActionButton(button, action);
+    }
+
+    public static NBT encode(PacketWrapper<?> wrapper, ActionButton button) {
+        NBTCompound compound = new NBTCompound();
+        CommonButtonData.encode(compound, wrapper, button.button);
+        if (button.action != null) {
+            compound.set("action", button.action, Action::encode, wrapper);
+        }
+        return compound;
+    }
+
+    public CommonButtonData getButton() {
+        return this.button;
+    }
+
+    public @Nullable Action getAction() {
+        return this.action;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/button/CommonButtonData.java

@@ -0,0 +1,72 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.button;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTInt;
+import com.github.retrooper.packetevents.util.adventure.AdventureSerializer;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.text.Component;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+@NullMarked
+public class CommonButtonData {
+
+    private final Component label;
+    private final @Nullable Component tooltip;
+    private final int width;
+
+    public CommonButtonData(Component label, @Nullable Component tooltip, int width) {
+        this.label = label;
+        this.tooltip = tooltip;
+        this.width = width;
+    }
+
+    public static CommonButtonData decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        AdventureSerializer serializer = AdventureSerializer.serializer(wrapper);
+        Component label = compound.getOrThrow("label", serializer, wrapper);
+        Component tooltip = compound.getOrNull("tooltip", serializer, wrapper);
+        int width = compound.getNumberTagValueOrDefault("width", 150).intValue();
+        return new CommonButtonData(label, tooltip, width);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, CommonButtonData button) {
+        AdventureSerializer serializer = AdventureSerializer.serializer(wrapper);
+        compound.set("label", button.label, serializer, wrapper);
+        if (button.tooltip != null) {
+            compound.set("tooltip", button.tooltip, serializer, wrapper);
+        }
+        if (button.width != 150) {
+            compound.setTag("width", new NBTInt(button.width));
+        }
+    }
+
+    public Component getLabel() {
+        return this.label;
+    }
+
+    public @Nullable Component getTooltip() {
+        return this.tooltip;
+    }
+
+    public int getWidth() {
+        return this.width;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/input/BooleanInputControl.java

@@ -0,0 +1,85 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.input;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBTByte;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTString;
+import com.github.retrooper.packetevents.util.adventure.AdventureSerializer;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.text.Component;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class BooleanInputControl implements InputControl {
+
+    private final Component label;
+    private final boolean initial;
+    private final String onTrue;
+    private final String onFalse;
+
+    public BooleanInputControl(Component label, boolean initial, String onTrue, String onFalse) {
+        this.label = label;
+        this.initial = initial;
+        this.onTrue = onTrue;
+        this.onFalse = onFalse;
+    }
+
+    public static BooleanInputControl decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        Component label = compound.getOrThrow("label", AdventureSerializer.serializer(wrapper), wrapper);
+        boolean initial = compound.getBoolean("initial");
+        String onTrue = compound.getStringTagValueOrDefault("on_true", "true");
+        String onFalse = compound.getStringTagValueOrDefault("on_false", "false");
+        return new BooleanInputControl(label, initial, onTrue, onFalse);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, BooleanInputControl control) {
+        compound.set("label", control.label, AdventureSerializer.serializer(wrapper), wrapper);
+        if (control.initial) {
+            compound.setTag("initial", new NBTByte(true));
+        }
+        if (!"true".equals(control.onTrue)) {
+            compound.setTag("on_true", new NBTString(control.onTrue));
+        }
+        if (!"false".equals(control.onFalse)) {
+            compound.setTag("on_false", new NBTString(control.onFalse));
+        }
+    }
+
+    @Override
+    public InputControlType<?> getType() {
+        return InputControlTypes.BOOLEAN;
+    }
+
+    public Component getLabel() {
+        return this.label;
+    }
+
+    public boolean isInitial() {
+        return this.initial;
+    }
+
+    public String getOnTrue() {
+        return this.onTrue;
+    }
+
+    public String getOnFalse() {
+        return this.onFalse;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/input/Input.java

@@ -0,0 +1,59 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.input;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBT;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTString;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class Input {
+
+    private final String key;
+    private final InputControl control;
+
+    public Input(String key, InputControl control) {
+        this.key = key;
+        this.control = control;
+    }
+
+    public static Input decode(NBT nbt, PacketWrapper<?> wrapper) {
+        NBTCompound compound = (NBTCompound) nbt;
+        String key = compound.getStringTagValueOrThrow("key");
+        InputControl control = InputControl.decode(compound, wrapper);
+        return new Input(key, control);
+    }
+
+    public static NBT encode(PacketWrapper<?> wrapper, Input input) {
+        NBTCompound compound = new NBTCompound();
+        compound.setTag("key", new NBTString(input.key));
+        InputControl.encode(compound, wrapper, input.control);
+        return compound;
+    }
+
+    public String getKey() {
+        return this.key;
+    }
+
+    public InputControl getControl() {
+        return this.control;
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/input/InputControl.java

@@ -0,0 +1,42 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.input;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.resources.ResourceLocation;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public interface InputControl {
+
+    static InputControl decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        String typeName = compound.getStringTagValueOrThrow("type");
+        InputControlType<?> type = InputControlTypes.getRegistry().getByNameOrThrow(typeName);
+        return type.decode(compound, wrapper);
+    }
+
+    @SuppressWarnings("unchecked") // not unchecked
+    static void encode(NBTCompound compound, PacketWrapper<?> wrapper, InputControl control) {
+        compound.set("type", control.getType().getName(), ResourceLocation::encode, wrapper);
+        ((InputControlType<? super InputControl>) control.getType()).encode(compound, wrapper, control);
+    }
+
+    InputControlType<?> getType();
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/input/InputControlType.java

@@ -0,0 +1,32 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.input;
+
+import com.github.retrooper.packetevents.protocol.mapper.MappedEntity;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public interface InputControlType<T extends InputControl> extends MappedEntity {
+
+    T decode(NBTCompound compound, PacketWrapper<?> wrapper);
+
+    void encode(NBTCompound compound, PacketWrapper<?> wrapper, T control);
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/input/InputControlTypes.java

@@ -0,0 +1,59 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.input;
+
+import com.github.retrooper.packetevents.protocol.util.NbtMapDecoder;
+import com.github.retrooper.packetevents.protocol.util.NbtMapEncoder;
+import com.github.retrooper.packetevents.util.mappings.VersionedRegistry;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public final class InputControlTypes {
+
+    private static final VersionedRegistry<InputControlType<?>> REGISTRY = new VersionedRegistry<>("input_control_type");
+
+    private InputControlTypes() {
+    }
+
+    public static VersionedRegistry<InputControlType<?>> getRegistry() {
+        return REGISTRY;
+    }
+
+    @ApiStatus.Internal
+    public static <T extends InputControl> InputControlType<T> define(
+            String name, NbtMapDecoder<T> decoder, NbtMapEncoder<T> encoder
+    ) {
+        return REGISTRY.define(name, data ->
+                new StaticInputControlType<>(data, decoder, encoder));
+    }
+
+    public static final InputControlType<BooleanInputControl> BOOLEAN = define("boolean",
+            BooleanInputControl::decode, BooleanInputControl::encode);
+    public static final InputControlType<NumberRangeInputControl> NUMBER_RANGE = define("number_range",
+            NumberRangeInputControl::decode, NumberRangeInputControl::encode);
+    public static final InputControlType<SingleOptionInputControl> SINGLE_OPTION = define("single_option",
+            SingleOptionInputControl::decode, SingleOptionInputControl::encode);
+    public static final InputControlType<TextInputControl> TEXT = define("text",
+            TextInputControl::decode, TextInputControl::encode);
+
+    static {
+        REGISTRY.unloadMappings();
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/input/NumberRangeInputControl.java

@@ -0,0 +1,146 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.input;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTFloat;
+import com.github.retrooper.packetevents.protocol.nbt.NBTInt;
+import com.github.retrooper.packetevents.protocol.nbt.NBTNumber;
+import com.github.retrooper.packetevents.protocol.nbt.NBTString;
+import com.github.retrooper.packetevents.util.adventure.AdventureSerializer;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.text.Component;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+@NullMarked
+public class NumberRangeInputControl implements InputControl {
+
+    private final int width;
+    private final Component label;
+    private final String labelFormat;
+    private final RangeInfo rangeInfo;
+
+    public NumberRangeInputControl(int width, Component label, String labelFormat, RangeInfo rangeInfo) {
+        this.width = width;
+        this.label = label;
+        this.labelFormat = labelFormat;
+        this.rangeInfo = rangeInfo;
+    }
+
+    public static NumberRangeInputControl decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        int width = compound.getNumberTagValueOrDefault("width", 200).intValue();
+        Component label = compound.getOrThrow("label", AdventureSerializer.serializer(wrapper), wrapper);
+        String labelFormat = compound.getStringTagValueOrDefault("label_format", "options.generic_value");
+        RangeInfo rangeInfo = RangeInfo.decode(compound, wrapper);
+        return new NumberRangeInputControl(width, label, labelFormat, rangeInfo);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, NumberRangeInputControl control) {
+        if (control.width != 200) {
+            compound.setTag("width", new NBTInt(control.width));
+        }
+        compound.set("label", control.label, AdventureSerializer.serializer(wrapper), wrapper);
+        if (!"options.generic_value".equals(control.labelFormat)) {
+            compound.setTag("label_format", new NBTString(control.labelFormat));
+        }
+        RangeInfo.encode(compound, wrapper, control.rangeInfo);
+    }
+
+    @Override
+    public InputControlType<?> getType() {
+        return InputControlTypes.NUMBER_RANGE;
+    }
+
+    public int getWidth() {
+        return this.width;
+    }
+
+    public Component getLabel() {
+        return this.label;
+    }
+
+    public String getLabelFormat() {
+        return this.labelFormat;
+    }
+
+    public RangeInfo getRangeInfo() {
+        return this.rangeInfo;
+    }
+
+    public static final class RangeInfo {
+
+        private final float start;
+        private final float end;
+        private final @Nullable Float initial;
+        private final @Nullable Float step;
+
+        public RangeInfo(float start, float end, @Nullable Float initial, @Nullable Float step) {
+            if (initial != null) {
+                float min = Math.min(start, end);
+                float max = Math.max(start, end);
+                if (initial < min || initial > max) {
+                    throw new IllegalArgumentException("Initial value " + initial
+                            + " is outside of range [" + min + ", " + max + "]");
+                }
+            }
+            this.start = start;
+            this.end = end;
+            this.initial = initial;
+            this.step = step;
+        }
+
+        public static RangeInfo decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+            float start = compound.getNumberTagValueOrThrow("start").floatValue();
+            float end = compound.getNumberTagValueOrThrow("end").floatValue();
+            NBTNumber initialTag = compound.getNumberTagOrNull("initial");
+            Float initial = initialTag != null ? initialTag.getAsFloat() : null;
+            NBTNumber stepTag = compound.getNumberTagOrNull("step");
+            Float step = stepTag != null ? stepTag.getAsFloat() : null;
+            return new RangeInfo(start, end, initial, step);
+        }
+
+        public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, RangeInfo rangeInfo) {
+            compound.setTag("start", new NBTFloat(rangeInfo.start));
+            compound.setTag("end", new NBTFloat(rangeInfo.end));
+            if (rangeInfo.initial != null) {
+                compound.setTag("initial", new NBTFloat(rangeInfo.initial));
+            }
+            if (rangeInfo.step != null) {
+                compound.setTag("step", new NBTFloat(rangeInfo.step));
+            }
+        }
+
+        public float getStart() {
+            return this.start;
+        }
+
+        public float getEnd() {
+            return this.end;
+        }
+
+        public @Nullable Float getInitial() {
+            return this.initial;
+        }
+
+        public @Nullable Float getStep() {
+            return this.step;
+        }
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/input/SingleOptionInputControl.java

@@ -0,0 +1,145 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.input;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBT;
+import com.github.retrooper.packetevents.protocol.nbt.NBTByte;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTInt;
+import com.github.retrooper.packetevents.protocol.nbt.NBTString;
+import com.github.retrooper.packetevents.util.adventure.AdventureSerializer;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.text.Component;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+import java.util.List;
+
+@NullMarked
+public class SingleOptionInputControl implements InputControl {
+
+    private final int width;
+    private final List<Entry> options;
+    private final Component label;
+    private final boolean labelVisible;
+
+    public SingleOptionInputControl(int width, List<Entry> options, Component label, boolean labelVisible) {
+        boolean initial = false;
+        for (Entry entry : options) {
+            if (entry.initial) {
+                if (initial) {
+                    throw new IllegalArgumentException("Multiple initial values");
+                }
+                initial = true;
+            }
+        }
+        this.width = width;
+        this.options = options;
+        this.label = label;
+        this.labelVisible = labelVisible;
+    }
+
+    public static SingleOptionInputControl decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        int width = compound.getNumberTagValueOrDefault("width", 200).intValue();
+        List<Entry> options = compound.getListOrThrow("options", Entry::decode, wrapper);
+        Component label = compound.getOrThrow("label", AdventureSerializer.serializer(wrapper), wrapper);
+        boolean labelVisible = compound.getBooleanOr("label_visible", true);
+        return new SingleOptionInputControl(width, options, label, labelVisible);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, SingleOptionInputControl control) {
+        if (control.width != 200) {
+            compound.setTag("width", new NBTInt(control.width));
+        }
+        compound.setList("options", control.options, Entry::encode, wrapper);
+        compound.set("label", control.label, AdventureSerializer.serializer(wrapper), wrapper);
+        if (!control.labelVisible) {
+            compound.setTag("label_visible", new NBTByte(false));
+        }
+    }
+
+    @Override
+    public InputControlType<?> getType() {
+        return InputControlTypes.SINGLE_OPTION;
+    }
+
+    public int getWidth() {
+        return this.width;
+    }
+
+    public List<Entry> getOptions() {
+        return this.options;
+    }
+
+    public Component getLabel() {
+        return this.label;
+    }
+
+    public boolean isLabelVisible() {
+        return this.labelVisible;
+    }
+
+    public static final class Entry {
+
+        private final String id;
+        private final @Nullable Component display;
+        private final boolean initial;
+
+        public Entry(String id, @Nullable Component display, boolean initial) {
+            this.id = id;
+            this.display = display;
+            this.initial = initial;
+        }
+
+        public static Entry decode(NBT nbt, PacketWrapper<?> wrapper) {
+            if (nbt instanceof NBTString) {
+                return new Entry(((NBTString) nbt).getValue(), null, false);
+            }
+            NBTCompound compound = (NBTCompound) nbt;
+            String id = compound.getStringTagValueOrThrow("id");
+            Component display = compound.getOrNull("display", AdventureSerializer.serializer(wrapper), wrapper);
+            boolean initial = compound.getBooleanOr("initial", false);
+            return new Entry(id, display, initial);
+        }
+
+        public static NBT encode(PacketWrapper<?> wrapper, Entry entry) {
+            NBTCompound compound = new NBTCompound();
+            compound.setTag("id", new NBTString(entry.id));
+            if (entry.display != null) {
+                compound.set("display", entry.display, AdventureSerializer.serializer(wrapper), wrapper);
+            }
+            if (entry.initial) {
+                compound.setTag("initial", new NBTByte(true));
+            }
+            return compound;
+        }
+
+        public String getId() {
+            return this.id;
+        }
+
+        public @Nullable Component getDisplay() {
+            return this.display;
+        }
+
+        public boolean isInitial() {
+            return this.initial;
+        }
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/input/StaticInputControlType.java

@@ -0,0 +1,57 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.input;
+
+import com.github.retrooper.packetevents.protocol.mapper.AbstractMappedEntity;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.util.NbtMapDecoder;
+import com.github.retrooper.packetevents.protocol.util.NbtMapEncoder;
+import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class StaticInputControlType<T extends InputControl> extends AbstractMappedEntity implements InputControlType<T> {
+
+    private final NbtMapDecoder<T> decoder;
+    private final NbtMapEncoder<T> encoder;
+
+    @ApiStatus.Internal
+    public StaticInputControlType(
+            @Nullable TypesBuilderData data,
+            NbtMapDecoder<T> decoder,
+            NbtMapEncoder<T> encoder
+    ) {
+        super(data);
+        this.decoder = decoder;
+        this.encoder = encoder;
+    }
+
+    @Override
+    public T decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        return this.decoder.decode(compound, wrapper);
+    }
+
+    @Override
+    public void encode(NBTCompound compound, PacketWrapper<?> wrapper, T control) {
+        this.encoder.encode(compound, wrapper, control);
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/dialog/input/TextInputControl.java

@@ -0,0 +1,151 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.dialog.input;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBT;
+import com.github.retrooper.packetevents.protocol.nbt.NBTByte;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+import com.github.retrooper.packetevents.protocol.nbt.NBTInt;
+import com.github.retrooper.packetevents.protocol.nbt.NBTString;
+import com.github.retrooper.packetevents.util.adventure.AdventureSerializer;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.text.Component;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+@NullMarked
+public class TextInputControl implements InputControl {
+
+    private final int width;
+    private final Component label;
+    private final boolean labelVisible;
+    private final String initial;
+    private final int maxLength;
+    private final @Nullable MultilineOptions multiline;
+
+    public TextInputControl(int width, Component label, boolean labelVisible, String initial, int maxLength, @Nullable MultilineOptions multiline) {
+        if (initial.length() > maxLength) {
+            throw new IllegalArgumentException("Default text length exceeds allowed size");
+        }
+        this.width = width;
+        this.label = label;
+        this.labelVisible = labelVisible;
+        this.initial = initial;
+        this.maxLength = maxLength;
+        this.multiline = multiline;
+    }
+
+    public static TextInputControl decode(NBTCompound compound, PacketWrapper<?> wrapper) {
+        int width = compound.getNumberTagValueOrDefault("width", 200).intValue();
+        Component label = compound.getOrThrow("label", AdventureSerializer.serializer(wrapper), wrapper);
+        boolean labelVisible = compound.getBooleanOr("label_visible", true);
+        String initial = compound.getStringTagValueOrDefault("initial", "");
+        int maxLength = compound.getNumberTagValueOrDefault("max_length", 32).intValue();
+        MultilineOptions multiline = compound.getOrNull("multiline", MultilineOptions::decode, wrapper);
+        return new TextInputControl(width, label, labelVisible, initial, maxLength, multiline);
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, TextInputControl control) {
+        if (control.width != 200) {
+            compound.setTag("width", new NBTInt(control.width));
+        }
+        compound.set("label", control.label, AdventureSerializer.serializer(wrapper), wrapper);
+        if (!control.labelVisible) {
+            compound.setTag("label_visible", new NBTByte(false));
+        }
+        if (!control.initial.isEmpty()) {
+            compound.setTag("initial", new NBTString(control.initial));
+        }
+        if (control.maxLength != 32) {
+            compound.setTag("max_length", new NBTInt(control.maxLength));
+        }
+        if (control.multiline != null) {
+            compound.set("multiline", control.multiline, MultilineOptions::encode, wrapper);
+        }
+    }
+
+    @Override
+    public InputControlType<?> getType() {
+        return InputControlTypes.TEXT;
+    }
+
+    public int getWidth() {
+        return this.width;
+    }
+
+    public Component getLabel() {
+        return this.label;
+    }
+
+    public boolean isLabelVisible() {
+        return this.labelVisible;
+    }
+
+    public String getInitial() {
+        return this.initial;
+    }
+
+    public int getMaxLength() {
+        return this.maxLength;
+    }
+
+    public @Nullable MultilineOptions getMultiline() {
+        return this.multiline;
+    }
+
+    public static final class MultilineOptions {
+
+        private final @Nullable Integer maxLines;
+        private final @Nullable Integer height;
+
+        public MultilineOptions(@Nullable Integer maxLines, @Nullable Integer height) {
+            this.maxLines = maxLines;
+            this.height = height;
+        }
+
+        public static MultilineOptions decode(NBT nbt, PacketWrapper<?> wrapper) {
+            NBTCompound compound = (NBTCompound) nbt;
+            Number maxLines = compound.getNumberTagValueOrNull("max_lines");
+            Number height = compound.getNumberTagValueOrNull("height");
+            return new MultilineOptions(
+                    maxLines != null ? maxLines.intValue() : null,
+                    height != null ? height.intValue() : null
+            );
+        }
+
+        public static NBT encode(PacketWrapper<?> wrapper, MultilineOptions options) {
+            NBTCompound compound = new NBTCompound();
+            if (options.maxLines != null) {
+                compound.setTag("max_lines", new NBTInt(options.maxLines));
+            }
+            if (options.height != null) {
+                compound.setTag("height", new NBTInt(options.height));
+            }
+            return compound;
+        }
+
+        public @Nullable Integer getMaxLines() {
+            return this.maxLines;
+        }
+
+        public @Nullable Integer getHeight() {
+            return this.height;
+        }
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/entity/type/EntityTypes.java

@@ -296,6 +296,11 @@ public final class EntityTypes {
      */
     public static final EntityType LINGERING_POTION = define("lingering_potion", POTION);
 
+    /**
+     * Added with 1.21.6
+     */
+    public static final EntityType HAPPY_GHAST = define("happy_ghast", ABSTRACT_ANIMAL);
+
     /**
      * Returns an immutable view of the entity types.
      *

api/src/main/java/com/github/retrooper/packetevents/protocol/entity/wolfvariant/WolfVariant.java

@@ -50,14 +50,16 @@ public interface WolfVariant extends MappedEntity, CopyableEntity<WolfVariant>,
     MappedEntitySet<Biome> getBiomes();
 
     static WolfVariant read(PacketWrapper<?> wrapper) {
-        if (wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5)) {
+        if (wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5)
+                || wrapper.getServerVersion().isOlderThan(ServerVersion.V_1_21)) {
             return wrapper.readMappedEntity(WolfVariants.getRegistry());
         }
         return wrapper.readMappedEntityOrDirect(WolfVariants.getRegistry(), WolfVariant::readDirect);
     }
 
     static void write(PacketWrapper<?> wrapper, WolfVariant variant) {
-        if (wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5)) {
+        if (wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5)
+                || wrapper.getServerVersion().isOlderThan(ServerVersion.V_1_21)) {
             wrapper.writeMappedEntity(variant);
         } else {
             wrapper.writeMappedEntityOrDirect(variant, WolfVariant::writeDirect);
@@ -87,14 +89,19 @@ public interface WolfVariant extends MappedEntity, CopyableEntity<WolfVariant>,
         MappedEntitySet.write(wrapper, variant.getBiomes());
     }
 
+    @Deprecated
     static WolfVariant decode(NBT nbt, ClientVersion version, @Nullable TypesBuilderData data) {
+        return decode(nbt, PacketWrapper.createDummyWrapper(version), data);
+    }
+
+    static WolfVariant decode(NBT nbt, PacketWrapper<?> wrapper, @Nullable TypesBuilderData data) {
         NBTCompound compound = (NBTCompound) nbt;
-        if (version.isOlderThan(ClientVersion.V_1_21_5)) {
+        if (wrapper.getServerVersion().isOlderThan(ServerVersion.V_1_21_5)) {
             ResourceLocation wildTexture = new ResourceLocation(compound.getStringTagValueOrThrow("wild_texture"));
             ResourceLocation tameTexture = new ResourceLocation(compound.getStringTagValueOrThrow("tame_texture"));
             ResourceLocation angryTexture = new ResourceLocation(compound.getStringTagValueOrThrow("angry_texture"));
-            MappedEntitySet<Biome> biomes = MappedEntitySet.decode(
-                    compound.getTagOrThrow("biomes"), version, Biomes.getRegistry());
+            MappedEntitySet<Biome> biomes = compound.getOrThrow("biomes", (tag, ew) ->
+                    MappedEntitySet.decode(tag, ew, Biomes.getRegistry()), wrapper);
             return new StaticWolfVariant(data, wildTexture, tameTexture, angryTexture, biomes);
         }
         NBTCompound assets = compound.getCompoundTagOrThrow("assets");
@@ -105,13 +112,18 @@ public interface WolfVariant extends MappedEntity, CopyableEntity<WolfVariant>,
                 angryTexture, MappedEntitySet.createEmpty());
     }
 
+    @Deprecated
     static NBT encode(WolfVariant variant, ClientVersion version) {
+        return encode(PacketWrapper.createDummyWrapper(version), variant);
+    }
+
+    static NBT encode(PacketWrapper<?> wrapper, WolfVariant variant) {
         NBTCompound compound = new NBTCompound();
-        if (version.isOlderThan(ClientVersion.V_1_21_5)) {
+        if (wrapper.getServerVersion().isOlderThan(ServerVersion.V_1_21_5)) {
             compound.setTag("wild_texture", new NBTString(variant.getWildTexture().toString()));
             compound.setTag("tame_texture", new NBTString(variant.getTameTexture().toString()));
             compound.setTag("angry_texture", new NBTString(variant.getAngryTexture().toString()));
-            compound.setTag("biomes", MappedEntitySet.encode(variant.getBiomes(), version));
+            compound.set("biomes", variant.getBiomes(), MappedEntitySet::encode, wrapper);
         } else {
             NBTCompound assets = new NBTCompound();
             assets.setTag("wild", new NBTString(variant.getWildTexture().toString()));

api/src/main/java/com/github/retrooper/packetevents/protocol/item/ItemStack.java

@@ -107,6 +107,11 @@ public class ItemStack {
         this.registryHolder = registryHolder;
     }
 
+    public static ItemStack decode(NBT nbt, PacketWrapper<?> wrapper) {
+        return decode(nbt, wrapper.getServerVersion().toClientVersion());
+    }
+
+    @Deprecated
     public static ItemStack decode(NBT nbt, ClientVersion version) {
         if (nbt instanceof NBTString) {
             ResourceLocation itemName = new ResourceLocation(((NBTString) nbt).getValue());
@@ -131,6 +136,11 @@ public class ItemStack {
         return builder.build();
     }
 
+    public static NBT encode(PacketWrapper<?> wrapper, ItemStack itemStack) {
+        return encodeForParticle(itemStack, wrapper.getServerVersion().toClientVersion());
+    }
+
+    @Deprecated
     public static NBT encodeForParticle(ItemStack itemStack, ClientVersion version) {
         if (version.isNewerThanOrEquals(ClientVersion.V_1_20_5)) {
             boolean simple = itemStack.isEmpty()

api/src/main/java/com/github/retrooper/packetevents/protocol/item/ItemStackSerialization.java

@@ -69,7 +69,7 @@ public final class ItemStackSerialization {
         ClientVersion version = wrapper.getServerVersion().toClientVersion();
         ItemType type = ItemTypes.getRegistry().getByIdOrThrow(version, typeId);
         int amount = wrapper.readByte();
-        int legacyData = v1_13_2 ? -1 : wrapper.readShort();
+        int legacyData = version.isOlderThan(ClientVersion.V_1_13) ? wrapper.readShort() : -1;
         NBTCompound nbt = wrapper.readNBT();
         return ItemStack.builder().type(type).amount(amount)
                 .nbt(nbt).legacyData(legacyData)
@@ -80,12 +80,14 @@ public final class ItemStackSerialization {
      * Removed with 1.20.5
      */
     private static void writeLegacy(PacketWrapper<?> wrapper, ItemStack stack) {
-        if (wrapper.getServerVersion().isOlderThanOrEquals(ServerVersion.V_1_12_2)) {
+        if (wrapper.getServerVersion().isOlderThan(ServerVersion.V_1_13_2)) {
             int typeId = stack.isEmpty() ? -1 : stack.getType().getId(wrapper.getServerVersion().toClientVersion());
             wrapper.writeShort(typeId);
             if (typeId != -1) {
                 wrapper.writeByte(stack.getAmount());
-                wrapper.writeShort(stack.getLegacyData());
+                if (wrapper.getServerVersion().isOlderThan(ServerVersion.V_1_13)) {
+                    wrapper.writeShort(stack.getLegacyData());
+                }
                 wrapper.writeNBT(stack.getNBT());
             }
         } else if (stack.isEmpty()) {

api/src/main/java/com/github/retrooper/packetevents/protocol/item/enchantment/EnchantmentCost.java

@@ -22,6 +22,7 @@ import com.github.retrooper.packetevents.protocol.nbt.NBT;
 import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
 import com.github.retrooper.packetevents.protocol.nbt.NBTInt;
 import com.github.retrooper.packetevents.protocol.player.ClientVersion;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
 
 import java.util.Objects;
 
@@ -35,14 +36,24 @@ public final class EnchantmentCost {
         this.perLevelAboveFirst = perLevelAboveFirst;
     }
 
+    @Deprecated
     public static EnchantmentCost decode(NBT nbt, ClientVersion version) {
+        return decode(nbt, PacketWrapper.createDummyWrapper(version));
+    }
+
+    public static EnchantmentCost decode(NBT nbt, PacketWrapper<?> wrapper) {
         NBTCompound compound = (NBTCompound) nbt;
         int base = compound.getNumberTagOrThrow("base").getAsInt();
         int perLevelAboveFirst = compound.getNumberTagOrThrow("per_level_above_first").getAsInt();
         return new EnchantmentCost(base, perLevelAboveFirst);
     }
 
+    @Deprecated
     public static NBT encode(EnchantmentCost cost, ClientVersion version) {
+        return encode(PacketWrapper.createDummyWrapper(version), cost);
+    }
+
+    public static NBT encode(PacketWrapper<?> wrapper, EnchantmentCost cost) {
         NBTCompound compound = new NBTCompound();
         compound.setTag("base", new NBTInt(cost.base));
         compound.setTag("per_level_above_first", new NBTInt(cost.perLevelAboveFirst));

api/src/main/java/com/github/retrooper/packetevents/protocol/item/enchantment/EnchantmentDefinition.java

@@ -28,6 +28,8 @@ import com.github.retrooper.packetevents.protocol.nbt.NBTInt;
 import com.github.retrooper.packetevents.protocol.nbt.NBTList;
 import com.github.retrooper.packetevents.protocol.nbt.NBTString;
 import com.github.retrooper.packetevents.protocol.player.ClientVersion;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -37,6 +39,7 @@ import java.util.Optional;
 
 import static com.github.retrooper.packetevents.util.adventure.AdventureIndexUtil.indexValueOrThrow;
 
+@NullMarked
 public final class EnchantmentDefinition {
 
     private final MappedEntitySet<ItemType> supportedItems;
@@ -65,16 +68,21 @@ public final class EnchantmentDefinition {
         this.slots = slots;
     }
 
+    @Deprecated
     public static EnchantmentDefinition decode(NBT nbt, ClientVersion version) {
+        return decode(nbt, PacketWrapper.createDummyWrapper(version));
+    }
+
+    public static EnchantmentDefinition decode(NBT nbt, PacketWrapper<?> wrapper) {
         NBTCompound compound = (NBTCompound) nbt;
-        MappedEntitySet<ItemType> supportedItems = MappedEntitySet.decode(
-                compound.getTagOrThrow("supported_items"), version, ItemTypes.getRegistry());
-        Optional<MappedEntitySet<ItemType>> primaryItems = Optional.ofNullable(compound.getTagOrNull("primary_items"))
-                .map(items -> MappedEntitySet.decode(items, version, ItemTypes.getRegistry()));
+        MappedEntitySet<ItemType> supportedItems = compound.getOrThrow("supported_items", (tag, ew) ->
+                MappedEntitySet.decode(tag, ew, ItemTypes.getRegistry()), wrapper);
+        Optional<MappedEntitySet<ItemType>> primaryItems = Optional.ofNullable(compound.getOrNull("primary_items",
+                (tag, ew) -> MappedEntitySet.decode(tag, ew, ItemTypes.getRegistry()), wrapper));
         int weight = compound.getNumberTagOrThrow("weight").getAsInt();
         int maxLevel = compound.getNumberTagOrThrow("max_level").getAsInt();
-        EnchantmentCost minCost = EnchantmentCost.decode(compound.getTagOrThrow("min_cost"), version);
-        EnchantmentCost maxCost = EnchantmentCost.decode(compound.getTagOrThrow("max_cost"), version);
+        EnchantmentCost minCost = compound.getOrThrow("min_cost", EnchantmentCost::decode, wrapper);
+        EnchantmentCost maxCost = compound.getOrThrow("max_cost", EnchantmentCost::decode, wrapper);
         int anvilCost = compound.getNumberTagOrThrow("anvil_cost").getAsInt();
 
         NBT slotsTag = compound.getTagOrThrow("slots");
@@ -96,24 +104,32 @@ public final class EnchantmentDefinition {
                 maxLevel, minCost, maxCost, anvilCost, slots);
     }
 
+    @Deprecated
     public static NBT encode(EnchantmentDefinition definition, ClientVersion version) {
+        return encode(PacketWrapper.createDummyWrapper(version), definition);
+    }
+
+    public static NBT encode(PacketWrapper<?> wrapper, EnchantmentDefinition definition) {
+        NBTCompound compound = new NBTCompound();
+        encode(compound, wrapper, definition);
+        return compound;
+    }
+
+    public static void encode(NBTCompound compound, PacketWrapper<?> wrapper, EnchantmentDefinition definition) {
         NBTList<NBTString> slotsTag = NBTList.createStringList();
         for (EquipmentSlotGroup slot : definition.slots) {
             slotsTag.addTag(new NBTString(slot.getId()));
         }
 
-        NBTCompound compound = new NBTCompound();
-        compound.setTag("supported_items", MappedEntitySet.encode(
-                definition.supportedItems, version));
-        definition.primaryItems.ifPresent(set -> compound.setTag(
-                "primary_items", MappedEntitySet.encode(set, version)));
+        compound.set("supported_items", definition.supportedItems, MappedEntitySet::encode, wrapper);
+        definition.primaryItems.ifPresent(set -> compound.set(
+                "primary_items", set, MappedEntitySet::encode, wrapper));
         compound.setTag("weight", new NBTInt(definition.weight));
         compound.setTag("max_level", new NBTInt(definition.maxLevel));
-        compound.setTag("min_cost", EnchantmentCost.encode(definition.minCost, version));
-        compound.setTag("max_cost", EnchantmentCost.encode(definition.maxCost, version));
+        compound.set("min_cost", definition.minCost, EnchantmentCost::encode, wrapper);
+        compound.set("max_cost", definition.maxCost, EnchantmentCost::encode, wrapper);
         compound.setTag("anvil_cost", new NBTInt(definition.anvilCost));
         compound.setTag("slots", slotsTag);
-        return compound;
     }
 
     public MappedEntitySet<ItemType> getSupportedItems() {

api/src/main/java/com/github/retrooper/packetevents/protocol/item/enchantment/type/EnchantmentType.java

@@ -25,17 +25,20 @@ import com.github.retrooper.packetevents.protocol.item.enchantment.EnchantmentDe
 import com.github.retrooper.packetevents.protocol.mapper.CopyableEntity;
 import com.github.retrooper.packetevents.protocol.mapper.DeepComparableEntity;
 import com.github.retrooper.packetevents.protocol.mapper.MappedEntity;
+import com.github.retrooper.packetevents.protocol.mapper.MappedEntityRefSet;
 import com.github.retrooper.packetevents.protocol.mapper.MappedEntitySet;
 import com.github.retrooper.packetevents.protocol.nbt.NBT;
 import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
 import com.github.retrooper.packetevents.protocol.player.ClientVersion;
-import com.github.retrooper.packetevents.util.adventure.AdventureSerializer;
 import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
 import net.kyori.adventure.text.Component;
 import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
 
 import java.util.Optional;
 
+@NullMarked
 public interface EnchantmentType extends MappedEntity, CopyableEntity<EnchantmentType>, DeepComparableEntity {
 
     Component getDescription();
@@ -44,30 +47,43 @@ public interface EnchantmentType extends MappedEntity, CopyableEntity<Enchantmen
 
     MappedEntitySet<EnchantmentType> getExclusiveSet();
 
+    MappedEntityRefSet<EnchantmentType> getExclusiveRefSet();
+
     StaticComponentMap getEffects();
 
+    @Deprecated
     static EnchantmentType decode(NBT nbt, ClientVersion version, @Nullable TypesBuilderData data) {
+        return decode(nbt, PacketWrapper.createDummyWrapper(version), data);
+    }
+
+    static EnchantmentType decode(NBT nbt, PacketWrapper<?> wrapper, @Nullable TypesBuilderData data) {
         NBTCompound compound = (NBTCompound) nbt;
-        Component description = AdventureSerializer.serializer(version).fromNbtTag(compound.getTagOrThrow("description"));
-        EnchantmentDefinition definition = EnchantmentDefinition.decode(compound, version);
-        MappedEntitySet<EnchantmentType> exclusiveSet = Optional.ofNullable(compound.getTagOrNull("exclusive_set"))
-                .map(tag -> MappedEntitySet.decode(tag, version, EnchantmentTypes.getRegistry()))
+        Component description = compound.getOrThrow("description", wrapper.getSerializers(), wrapper);
+        EnchantmentDefinition definition = EnchantmentDefinition.decode(compound, wrapper);
+        MappedEntityRefSet<EnchantmentType> exclusiveSet = Optional.ofNullable(compound.getTagOrNull("exclusive_set"))
+                .map(tag -> MappedEntitySet.<EnchantmentType>decodeRefSet(tag, wrapper))
                 .orElseGet(MappedEntitySet::createEmpty);
         StaticComponentMap effects = Optional.ofNullable(compound.getTagOrNull("effects"))
-                .map(tag -> IComponentMap.decode(tag, version,
+                .map(tag -> IComponentMap.decode(tag, wrapper,
                         EnchantEffectComponentTypes.getRegistry()))
                 .orElse(StaticComponentMap.EMPTY);
         return new StaticEnchantmentType(data, description, definition, exclusiveSet, effects);
     }
 
+    @Deprecated
     static NBT encode(EnchantmentType type, ClientVersion version) {
-        NBTCompound compound = (NBTCompound) EnchantmentDefinition.encode(type.getDefinition(), version);
-        compound.setTag("description", AdventureSerializer.serializer(version).asNbtTag(type.getDescription()));
-        if (!type.getExclusiveSet().isEmpty()) {
-            compound.setTag("exclusive_set", MappedEntitySet.encode(type.getExclusiveSet(), version));
+        return encode(type, PacketWrapper.createDummyWrapper(version));
+    }
+
+    static NBT encode(EnchantmentType type, PacketWrapper<?> wrapper) {
+        NBTCompound compound = new NBTCompound();
+        EnchantmentDefinition.encode(compound, wrapper, type.getDefinition());
+        compound.set("description", type.getDescription(), wrapper.getSerializers(), wrapper);
+        if (!type.getExclusiveRefSet().isEmpty()) {
+            compound.set("exclusive_set", type.getExclusiveRefSet(), MappedEntitySet::encodeRefSet, wrapper);
         }
         if (!type.getEffects().isEmpty()) {
-            compound.setTag("effects", IComponentMap.encode(type.getEffects(), version));
+            compound.set("effects", type.getEffects(), IComponentMap::encode, wrapper);
         }
         return compound;
     }

api/src/main/java/com/github/retrooper/packetevents/protocol/item/enchantment/type/EnchantmentTypes.java

@@ -25,6 +25,7 @@ import com.github.retrooper.packetevents.protocol.player.ClientVersion;
 import com.github.retrooper.packetevents.resources.ResourceLocation;
 import com.github.retrooper.packetevents.util.mappings.MappingHelper;
 import com.github.retrooper.packetevents.util.mappings.VersionedRegistry;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
 import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.Nullable;
 
@@ -64,12 +65,13 @@ public final class EnchantmentTypes {
 
     @ApiStatus.Internal
     public static EnchantmentType define(String key) {
+        PacketWrapper<?> wrapper = PacketWrapper.createDummyWrapper(ClientVersion.getLatest());
         return REGISTRY.define(key, data -> {
             NBTCompound dataTag = ENCHANTMENT_DATA.get(data.getName());
             if (dataTag == null) {
                 throw new IllegalArgumentException("Can't define enchantment " + data.getName() + ", no data found");
             }
-            return EnchantmentType.decode(dataTag, ClientVersion.getLatest(), data);
+            return EnchantmentType.decode(dataTag, wrapper, data);
         });
     }
 

api/src/main/java/com/github/retrooper/packetevents/protocol/item/enchantment/type/StaticEnchantmentType.java

@@ -18,22 +18,30 @@
 
 package com.github.retrooper.packetevents.protocol.item.enchantment.type;
 
+import com.github.retrooper.packetevents.PacketEvents;
 import com.github.retrooper.packetevents.protocol.component.StaticComponentMap;
 import com.github.retrooper.packetevents.protocol.item.enchantment.EnchantmentDefinition;
 import com.github.retrooper.packetevents.protocol.mapper.AbstractMappedEntity;
+import com.github.retrooper.packetevents.protocol.mapper.MappedEntityRefSet;
 import com.github.retrooper.packetevents.protocol.mapper.MappedEntitySet;
+import com.github.retrooper.packetevents.protocol.mapper.ResolvableEntity;
+import com.github.retrooper.packetevents.util.mappings.GlobalRegistryHolder;
 import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
 import net.kyori.adventure.text.Component;
 import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
 
 import java.util.Objects;
 
-public class StaticEnchantmentType extends AbstractMappedEntity implements EnchantmentType {
+@NullMarked
+public class StaticEnchantmentType extends AbstractMappedEntity implements EnchantmentType, ResolvableEntity {
 
     private final Component description;
     private final EnchantmentDefinition definition;
-    private final MappedEntitySet<EnchantmentType> exclusiveSet;
+    private final MappedEntityRefSet<EnchantmentType> exclusiveSetRef;
+    private @Nullable MappedEntitySet<EnchantmentType> exclusiveSet;
     private final StaticComponentMap effects;
 
     public StaticEnchantmentType(
@@ -50,20 +58,27 @@ public class StaticEnchantmentType extends AbstractMappedEntity implements Encha
             @Nullable TypesBuilderData data,
             Component description,
             EnchantmentDefinition definition,
-            MappedEntitySet<EnchantmentType> exclusiveSet,
+            MappedEntityRefSet<EnchantmentType> exclusiveSet,
             StaticComponentMap effects
     ) {
         super(data);
         this.description = description;
         this.definition = definition;
-        this.exclusiveSet = exclusiveSet;
+        this.exclusiveSetRef = exclusiveSet;
         this.effects = effects;
     }
 
+    @Override
+    public void doResolve(PacketWrapper<?> wrapper) {
+        this.exclusiveSet = this.exclusiveSetRef.resolve(wrapper, EnchantmentTypes.getRegistry());
+    }
+
     @Override
     public EnchantmentType copy(@Nullable TypesBuilderData newData) {
-        return new StaticEnchantmentType(newData, this.description,
-                this.definition, this.exclusiveSet, this.effects);
+        StaticEnchantmentType type = new StaticEnchantmentType(newData, this.description,
+                this.definition, this.exclusiveSetRef, this.effects);
+        type.exclusiveSet = this.exclusiveSet;
+        return type;
     }
 
     @Override
@@ -78,9 +93,22 @@ public class StaticEnchantmentType extends AbstractMappedEntity implements Encha
 
     @Override
     public MappedEntitySet<EnchantmentType> getExclusiveSet() {
+        if (this.exclusiveSet == null) {
+            // this shouldn't need to be called normally
+            this.exclusiveSet = this.exclusiveSetRef.resolve(
+                    PacketEvents.getAPI().getServerManager().getVersion().toClientVersion(),
+                    GlobalRegistryHolder.INSTANCE,
+                    EnchantmentTypes.getRegistry()
+            );
+        }
         return this.exclusiveSet;
     }
 
+    @Override
+    public MappedEntityRefSet<EnchantmentType> getExclusiveRefSet() {
+        return this.exclusiveSetRef;
+    }
+
     @Override
     public StaticComponentMap getEffects() {
         return this.effects;
@@ -94,17 +122,17 @@ public class StaticEnchantmentType extends AbstractMappedEntity implements Encha
         StaticEnchantmentType that = (StaticEnchantmentType) obj;
         if (!this.description.equals(that.description)) return false;
         if (!this.definition.equals(that.definition)) return false;
-        if (!this.exclusiveSet.equals(that.exclusiveSet)) return false;
+        if (!this.exclusiveSetRef.equals(that.exclusiveSetRef)) return false;
         return this.effects.equals(that.effects);
     }
 
     @Override
     public int deepHashCode() {
-        return Objects.hash(super.hashCode(), this.description, this.definition, this.exclusiveSet, this.effects);
+        return Objects.hash(super.hashCode(), this.description, this.definition, this.exclusiveSetRef, this.effects);
     }
 
     @Override
     public String toString() {
-        return "StaticEnchantmentType{description=" + this.description + ", definition=" + this.definition + ", exclusiveSet=" + this.exclusiveSet + ", effects=" + this.effects + "}";
+        return "StaticEnchantmentType{description=" + this.description + ", definition=" + this.definition + ", exclusiveSetRef=" + this.exclusiveSetRef + ", effects=" + this.effects + "}";
     }
 }

api/src/main/java/com/github/retrooper/packetevents/protocol/item/instrument/Instrument.java

@@ -28,7 +28,6 @@ import com.github.retrooper.packetevents.protocol.nbt.NBTFloat;
 import com.github.retrooper.packetevents.protocol.player.ClientVersion;
 import com.github.retrooper.packetevents.protocol.sound.Sound;
 import com.github.retrooper.packetevents.util.MathUtil;
-import com.github.retrooper.packetevents.util.adventure.AdventureSerializer;
 import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
 import com.github.retrooper.packetevents.wrapper.PacketWrapper;
 import net.kyori.adventure.text.Component;
@@ -82,21 +81,31 @@ public interface Instrument extends MappedEntity, CopyableEntity<Instrument>, De
         }
     }
 
+    @Deprecated
     static Instrument decode(NBT nbt, ClientVersion version, @Nullable TypesBuilderData data) {
+        return decode(nbt, PacketWrapper.createDummyWrapper(version), data);
+    }
+
+    static Instrument decode(NBT nbt, PacketWrapper<?> wrapper, @Nullable TypesBuilderData data) {
         NBTCompound compound = (NBTCompound) nbt;
-        Sound sound = Sound.decode(compound.getTagOrThrow("sound_event"), version);
+        Sound sound = compound.getOrThrow("sound_event", Sound::decode, wrapper);
         float useSeconds = compound.getNumberTagOrThrow("use_duration").getAsFloat();
         float range = compound.getNumberTagOrThrow("range").getAsFloat();
-        Component description = AdventureSerializer.serializer(version).fromNbtTag(compound.getTagOrThrow("description"));
+        Component description = compound.getOrThrow("description", wrapper.getSerializers(), wrapper);
         return new StaticInstrument(data, sound, useSeconds, range, description);
     }
 
+    @Deprecated
     static NBT encode(Instrument instrument, ClientVersion version) {
+        return encode(PacketWrapper.createDummyWrapper(version), instrument);
+    }
+
+    static NBT encode(PacketWrapper<?> wrapper, Instrument instrument) {
         NBTCompound compound = new NBTCompound();
-        compound.setTag("sound_event", Sound.encode(instrument.getSound(), version));
+        compound.set("sound_event", instrument.getSound(), Sound::encode, wrapper);
         compound.setTag("use_duration", new NBTFloat(instrument.getUseSeconds()));
         compound.setTag("range", new NBTFloat(instrument.getRange()));
-        compound.setTag("description", AdventureSerializer.serializer(version).asNbtTag(instrument.getDescription()));
+        compound.set("description", instrument.getDescription(), wrapper.getSerializers(), wrapper);
         return compound;
     }
 }

api/src/main/java/com/github/retrooper/packetevents/protocol/item/jukebox/IJukeboxSong.java

@@ -27,7 +27,6 @@ import com.github.retrooper.packetevents.protocol.nbt.NBTFloat;
 import com.github.retrooper.packetevents.protocol.nbt.NBTInt;
 import com.github.retrooper.packetevents.protocol.player.ClientVersion;
 import com.github.retrooper.packetevents.protocol.sound.Sound;
-import com.github.retrooper.packetevents.util.adventure.AdventureSerializer;
 import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
 import com.github.retrooper.packetevents.wrapper.PacketWrapper;
 import net.kyori.adventure.text.Component;
@@ -43,23 +42,31 @@ public interface IJukeboxSong extends MappedEntity, CopyableEntity<IJukeboxSong>
 
     int getComparatorOutput();
 
+    @Deprecated
     static IJukeboxSong decode(NBT nbt, ClientVersion version, @Nullable TypesBuilderData data) {
+        return decode(nbt, PacketWrapper.createDummyWrapper(version), data);
+    }
+
+    static IJukeboxSong decode(NBT nbt, PacketWrapper<?> wrapper, @Nullable TypesBuilderData data) {
         NBTCompound compound = (NBTCompound) nbt;
-        Sound sound = Sound.decode(compound.getTagOrThrow("sound_event"), version);
-        Component description = AdventureSerializer.serializer(version).fromNbtTag(compound.getTagOrThrow("description"));
+        Sound sound = compound.getOrThrow("sound_event", Sound::decode, wrapper);
+        Component description = compound.getOrThrow("description", wrapper.getSerializers(), wrapper);
         float length = compound.getNumberTagOrThrow("length_in_seconds").getAsFloat();
         int comparator_output = compound.getNumberTagOrThrow("comparator_output").getAsInt();
         return new JukeboxSong(data, sound, description, length, comparator_output);
     }
 
+    @Deprecated
     static NBT encode(IJukeboxSong jukeboxSong, ClientVersion version) {
+        return encode(PacketWrapper.createDummyWrapper(version), jukeboxSong);
+    }
+
+    static NBT encode(PacketWrapper<?> wrapper, IJukeboxSong song) {
         NBTCompound compound = new NBTCompound();
-
-        compound.setTag("sound_event", Sound.encode(jukeboxSong.getSound(), version));
-        compound.setTag("description", AdventureSerializer.serializer(version).asNbtTag(jukeboxSong.getDescription()));
-        compound.setTag("length_in_seconds", new NBTFloat(jukeboxSong.getLengthInSeconds()));
-        compound.setTag("comparator_output", new NBTInt(jukeboxSong.getComparatorOutput()));
-
+        compound.set("sound_event", song.getSound(), Sound::encode, wrapper);
+        compound.set("description", song.getDescription(), wrapper.getSerializers(), wrapper);
+        compound.setTag("length_in_seconds", new NBTFloat(song.getLengthInSeconds()));
+        compound.setTag("comparator_output", new NBTInt(song.getComparatorOutput()));
         return compound;
     }
 

api/src/main/java/com/github/retrooper/packetevents/protocol/item/jukebox/JukeboxSongs.java

@@ -81,6 +81,18 @@ public final class JukeboxSongs {
     public static final IJukeboxSong CREATOR_MUSIC_BOX = define("creator_music_box", Sounds.MUSIC_DISC_CREATOR_MUSIC_BOX,
             73, 11);
 
+    /**
+     * Added with 1.21.6
+     */
+    public static final IJukeboxSong TEARS = define("tears", Sounds.MUSIC_DISC_TEARS,
+            175, 10);
+
+    /**
+     * Added with 1.21.7
+     */
+    public static final IJukeboxSong LAVA_CHICKEN = define("lava_chicken", Sounds.MUSIC_DISC_LAVA_CHICKEN,
+            134, 9);
+
     /**
      * Returns an immutable view of the jukebox songs.
      *

api/src/main/java/com/github/retrooper/packetevents/protocol/item/trimmaterial/TrimMaterial.java

@@ -31,7 +31,6 @@ import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
 import com.github.retrooper.packetevents.protocol.nbt.NBTFloat;
 import com.github.retrooper.packetevents.protocol.nbt.NBTString;
 import com.github.retrooper.packetevents.protocol.player.ClientVersion;
-import com.github.retrooper.packetevents.util.adventure.AdventureSerializer;
 import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
 import com.github.retrooper.packetevents.wrapper.PacketWrapper;
 import net.kyori.adventure.text.Component;
@@ -102,12 +101,17 @@ public interface TrimMaterial extends MappedEntity, CopyableEntity<TrimMaterial>
         wrapper.writeComponent(material.getDescription());
     }
 
+    @Deprecated
     static TrimMaterial decode(NBT nbt, ClientVersion version, @Nullable TypesBuilderData data) {
+        return decode(nbt, PacketWrapper.createDummyWrapper(version), data);
+    }
+
+    static TrimMaterial decode(NBT nbt, PacketWrapper<?> wrapper, @Nullable TypesBuilderData data) {
         NBTCompound compound = (NBTCompound) nbt;
         String assetName = compound.getStringTagValueOrThrow("asset_name");
-        ItemType ingredient = version.isNewerThanOrEquals(ClientVersion.V_1_21_5)
+        ItemType ingredient = wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5)
                 ? null : ItemTypes.getByName(compound.getStringTagValueOrThrow("ingredient"));
-        float itemModelIndex = version.isNewerThanOrEquals(ClientVersion.V_1_21_4)
+        float itemModelIndex = wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_4)
                 ? FALLBACK_ITEM_MODEL_INDEX : compound.getNumberTagOrThrow("item_model_index").getAsFloat();
         NBTCompound overrideArmorMaterialsTag = compound.getCompoundTagOrNull("override_armor_materials");
         Map<ArmorMaterial, String> overrideArmorMaterials;
@@ -121,11 +125,16 @@ public interface TrimMaterial extends MappedEntity, CopyableEntity<TrimMaterial>
         } else {
             overrideArmorMaterials = Collections.emptyMap();
         }
-        Component description = AdventureSerializer.serializer(version).fromNbtTag(((NBTCompound) nbt).getTagOrThrow("description"));
+        Component description = ((NBTCompound) nbt).getOrThrow("description", wrapper.getSerializers(), wrapper);
         return new StaticTrimMaterial(data, assetName, ingredient, itemModelIndex, overrideArmorMaterials, description);
     }
 
+    @Deprecated
     static NBT encode(TrimMaterial material, ClientVersion version) {
+        return encode(PacketWrapper.createDummyWrapper(version), material);
+    }
+
+    static NBT encode(PacketWrapper<?> wrapper, TrimMaterial material) {
         NBTCompound overrideArmorMaterialsTag;
         if (!material.getOverrideArmorMaterials().isEmpty()) {
             overrideArmorMaterialsTag = new NBTCompound();
@@ -140,16 +149,16 @@ public interface TrimMaterial extends MappedEntity, CopyableEntity<TrimMaterial>
 
         NBTCompound compound = new NBTCompound();
         compound.setTag("asset_name", new NBTString(material.getAssetName()));
-        if (version.isOlderThan(ClientVersion.V_1_21_5)) {
+        if (wrapper.getServerVersion().isOlderThan(ServerVersion.V_1_21_5)) {
             compound.setTag("ingredient", new NBTString(material.getIngredient().getName().toString()));
         }
-        if (version.isOlderThan(ClientVersion.V_1_21_4)) {
+        if (wrapper.getServerVersion().isOlderThan(ServerVersion.V_1_21_4)) {
             compound.setTag("item_model_index", new NBTFloat(material.getItemModelIndex()));
         }
         if (overrideArmorMaterialsTag != null) {
             compound.setTag("override_armor_materials", overrideArmorMaterialsTag);
         }
-        compound.setTag("description", AdventureSerializer.serializer(version).asNbtTag(material.getDescription()));
+        compound.set("description", material.getDescription(), wrapper.getSerializers(), wrapper);
         return compound;
     }
 }

api/src/main/java/com/github/retrooper/packetevents/protocol/item/trimpattern/TrimPattern.java

@@ -30,7 +30,6 @@ import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
 import com.github.retrooper.packetevents.protocol.nbt.NBTString;
 import com.github.retrooper.packetevents.protocol.player.ClientVersion;
 import com.github.retrooper.packetevents.resources.ResourceLocation;
-import com.github.retrooper.packetevents.util.adventure.AdventureSerializer;
 import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
 import com.github.retrooper.packetevents.wrapper.PacketWrapper;
 import net.kyori.adventure.text.Component;
@@ -77,24 +76,34 @@ public interface TrimPattern extends MappedEntity, CopyableEntity<TrimPattern>,
         wrapper.writeBoolean(pattern.isDecal());
     }
 
+    @Deprecated
     static TrimPattern decode(NBT nbt, ClientVersion version, @Nullable TypesBuilderData data) {
+        return decode(nbt, PacketWrapper.createDummyWrapper(version), data);
+    }
+
+    static TrimPattern decode(NBT nbt, PacketWrapper<?> wrapper, @Nullable TypesBuilderData data) {
         NBTCompound compound = (NBTCompound) nbt;
         ResourceLocation assetId = new ResourceLocation(compound.getStringTagValueOrThrow("asset_id"));
-        ItemType templateItem = version.isNewerThanOrEquals(ClientVersion.V_1_21_5) ? null :
+        ItemType templateItem = wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_21_5) ? null :
                 ItemTypes.getByName(compound.getStringTagValueOrThrow("template_item"));
-        Component description = AdventureSerializer.serializer(version).fromNbtTag(compound.getTagOrThrow("description"));
-        boolean decal = version.isNewerThanOrEquals(ClientVersion.V_1_20_2) && compound.getBoolean("decal");
+        Component description = compound.getOrThrow("description", wrapper.getSerializers(), wrapper);
+        boolean decal = wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_20_2) && compound.getBoolean("decal");
         return new StaticTrimPattern(data, assetId, templateItem, description, decal);
     }
 
+    @Deprecated
     static NBT encode(TrimPattern pattern, ClientVersion version) {
+        return encode(PacketWrapper.createDummyWrapper(version), pattern);
+    }
+
+    static NBT encode(PacketWrapper<?> wrapper, TrimPattern pattern) {
         NBTCompound compound = new NBTCompound();
         compound.setTag("asset_id", new NBTString(pattern.getAssetId().toString()));
-        if (version.isOlderThan(ClientVersion.V_1_21_5)) {
+        if (wrapper.getServerVersion().isOlderThan(ServerVersion.V_1_21_5)) {
             compound.setTag("template_item", new NBTString(pattern.getTemplateItem().getName().toString()));
         }
-        compound.setTag("description", AdventureSerializer.serializer(version).asNbtTag(pattern.getDescription()));
-        if (version.isNewerThanOrEquals(ClientVersion.V_1_20_2)) {
+        compound.set("description", pattern.getDescription(), wrapper.getSerializers(), wrapper);
+        if (wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_20_2)) {
             compound.setTag("decal", new NBTByte(pattern.isDecal()));
         }
         return compound;

api/src/main/java/com/github/retrooper/packetevents/protocol/item/type/ItemTypes.java

@@ -1476,6 +1476,88 @@ public final class ItemTypes {
     public static final ItemType BLUE_EGG = builder("blue_egg").setMaxAmount(16).build();
     public static final ItemType BROWN_EGG = builder("brown_egg").setMaxAmount(16).build();
 
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType DRIED_GHAST = builder("dried_ghast").setMaxAmount(64).setPlacedType(StateTypes.DRIED_GHAST).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType WHITE_HARNESS = builder("white_harness").setMaxAmount(1).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType ORANGE_HARNESS = builder("orange_harness").setMaxAmount(1).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType MAGENTA_HARNESS = builder("magenta_harness").setMaxAmount(1).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType LIGHT_BLUE_HARNESS = builder("light_blue_harness").setMaxAmount(1).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType YELLOW_HARNESS = builder("yellow_harness").setMaxAmount(1).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType LIME_HARNESS = builder("lime_harness").setMaxAmount(1).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType PINK_HARNESS = builder("pink_harness").setMaxAmount(1).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType GRAY_HARNESS = builder("gray_harness").setMaxAmount(1).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType LIGHT_GRAY_HARNESS = builder("light_gray_harness").setMaxAmount(1).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType CYAN_HARNESS = builder("cyan_harness").setMaxAmount(1).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType PURPLE_HARNESS = builder("purple_harness").setMaxAmount(1).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType BLUE_HARNESS = builder("blue_harness").setMaxAmount(1).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType BROWN_HARNESS = builder("brown_harness").setMaxAmount(1).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType GREEN_HARNESS = builder("green_harness").setMaxAmount(1).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType RED_HARNESS = builder("red_harness").setMaxAmount(1).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType BLACK_HARNESS = builder("black_harness").setMaxAmount(1).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType HAPPY_GHAST_SPAWN_EGG = builder("happy_ghast_spawn_egg").setMaxAmount(64).build();
+    /**
+     * Added with 1.21.6
+     */
+    public static final ItemType MUSIC_DISC_TEARS = builder("music_disc_tears").setMaxAmount(1).setAttributes(ItemAttribute.MUSIC_DISC).build();
+
+    /**
+     * Added with 1.21.7
+     */
+    public static final ItemType MUSIC_DISC_LAVA_CHICKEN = builder("music_disc_lava_chicken").setMaxAmount(1).setAttributes(ItemAttribute.MUSIC_DISC).build();
+
     /**
      * @deprecated Burning furnace shows up as a missing texture, removed in 1.9
      */
@@ -1603,7 +1685,8 @@ public final class ItemTypes {
         // all versions where base components were changed TODO UPDATE
         ClientVersion[] versions = new ClientVersion[]{
                 ClientVersion.V_1_20_5, ClientVersion.V_1_21, ClientVersion.V_1_21_2,
-                ClientVersion.V_1_21_4, ClientVersion.V_1_21_5,
+                ClientVersion.V_1_21_4, ClientVersion.V_1_21_5, ClientVersion.V_1_21_6,
+                ClientVersion.V_1_21_7,
         };
         for (ClientVersion version : versions) {
             parseAllComponents(version);

api/src/main/java/com/github/retrooper/packetevents/protocol/mapper/MappedEntityRef.java

@@ -0,0 +1,117 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.mapper;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBT;
+import com.github.retrooper.packetevents.protocol.nbt.NBTString;
+import com.github.retrooper.packetevents.protocol.player.ClientVersion;
+import com.github.retrooper.packetevents.protocol.util.NbtDecoder;
+import com.github.retrooper.packetevents.protocol.util.NbtEncoder;
+import com.github.retrooper.packetevents.resources.ResourceLocation;
+import com.github.retrooper.packetevents.util.mappings.IRegistry;
+import com.github.retrooper.packetevents.util.mappings.IRegistryHolder;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+import java.lang.ref.WeakReference;
+import java.util.function.Supplier;
+
+@NullMarked
+public interface MappedEntityRef<T extends MappedEntity> extends Supplier<T> {
+
+    T get();
+
+    static <T extends MappedEntity> MappedEntityRef<T> decode(
+            NBT tag, IRegistry<T> registry, NbtDecoder<T> decoder, PacketWrapper<?> wrapper
+    ) {
+        if (tag instanceof NBTString) {
+            ResourceLocation name = new ResourceLocation(((NBTString) tag).getValue());
+            return new Named<>(wrapper, registry, name);
+        }
+        return new Static<>(decoder.decode(tag, wrapper));
+    }
+
+    static <T extends MappedEntity> NBT encode(PacketWrapper<?> wrapper, NbtEncoder<T> encoder, MappedEntityRef<T> ref) {
+        if (ref instanceof Named) {
+            return new NBTString(((Named<T>) ref).name.toString());
+        } else if (ref instanceof Static) {
+            return encoder.encode(wrapper, ((Static<T>) ref).entity);
+        } else {
+            throw new UnsupportedOperationException("Unsupported MappedEntityRef implementation: " + ref);
+        }
+    }
+
+    final class Static<T extends MappedEntity> implements MappedEntityRef<T> {
+
+        private final T entity;
+
+        public Static(T entity) {
+            this.entity = entity;
+        }
+
+        @Override
+        public T get() {
+            return this.entity;
+        }
+    }
+
+    final class Named<T extends MappedEntity> implements MappedEntityRef<T> {
+
+        private final WeakReference<IRegistryHolder> registryHolder;
+        private final ClientVersion version;
+        private final IRegistry<T> registry;
+        private final ResourceLocation name;
+        private volatile @Nullable T entity;
+
+        public Named(PacketWrapper<?> wrapper, IRegistry<T> registry, ResourceLocation name) {
+            this(wrapper.getRegistryHolder(), wrapper.getServerVersion().toClientVersion(), registry, name);
+        }
+
+        public Named(IRegistryHolder registryHolder, ClientVersion version, IRegistry<T> registry, ResourceLocation name) {
+            this.registryHolder = new WeakReference<>(registryHolder);
+            this.version = version;
+            this.registry = registry;
+            this.name = name;
+        }
+
+        @Override
+        public T get() {
+            T entity = this.entity;
+            if (entity == null) {
+                synchronized (this) {
+                    entity = this.entity;
+                    if (entity == null) {
+                        // registry holder may be a user object, so ensure no user objects get leaked accidentally
+                        IRegistryHolder registryHolder = this.registryHolder.get();
+                        if (registryHolder == null) {
+                            throw new IllegalStateException("Registry holder for " + this.registry
+                                    + "/" + this.version + "/" + this.name + "has disappeared");
+                        }
+                        // replace registry and lookup entity
+                        IRegistry<T> registry = registryHolder.getRegistryOr(this.registry, this.version);
+                        entity = registry.getByNameOrThrow(this.name);
+                        this.entity = entity;
+                    }
+                }
+            }
+            return entity;
+        }
+    }
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/mapper/MappedEntityRefSet.java

@@ -0,0 +1,44 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.mapper;
+
+import com.github.retrooper.packetevents.protocol.player.ClientVersion;
+import com.github.retrooper.packetevents.util.mappings.IRegistry;
+import com.github.retrooper.packetevents.util.mappings.IRegistryHolder;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public interface MappedEntityRefSet<T extends MappedEntity> {
+
+    default MappedEntitySet<T> resolve(PacketWrapper<?> wrapper, IRegistry<T> registry) {
+        ClientVersion version = wrapper.getServerVersion().toClientVersion();
+        IRegistry<T> replacedRegistry = wrapper.getRegistryHolder().getRegistryOr(registry, version);
+        return this.resolve(version, replacedRegistry);
+    }
+
+    default MappedEntitySet<T> resolve(ClientVersion version, IRegistryHolder registryHolder, IRegistry<T> registry) {
+        IRegistry<T> replacedRegistry = registryHolder.getRegistryOr(registry, version);
+        return this.resolve(version, replacedRegistry);
+    }
+
+    MappedEntitySet<T> resolve(ClientVersion version, IRegistry<T> registry);
+
+    boolean isEmpty();
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/mapper/MappedEntitySet.java

@@ -24,10 +24,14 @@ import com.github.retrooper.packetevents.protocol.nbt.NBTString;
 import com.github.retrooper.packetevents.protocol.player.ClientVersion;
 import com.github.retrooper.packetevents.resources.ResourceLocation;
 import com.github.retrooper.packetevents.util.mappings.IRegistry;
+import com.github.retrooper.packetevents.util.mappings.IRegistryHolder;
 import com.github.retrooper.packetevents.wrapper.PacketWrapper;
 import org.jetbrains.annotations.Nullable;
+import org.jspecify.annotations.NullMarked;
 
 import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 import java.util.Objects;
 import java.util.function.BiFunction;
@@ -35,7 +39,8 @@ import java.util.function.BiFunction;
 /**
  * Either a key to a specific tag or a list of possible entities.
  */
-public class MappedEntitySet<T> {
+@NullMarked
+public class MappedEntitySet<T extends MappedEntity> implements MappedEntityRefSet<T> {
 
     private final @Nullable ResourceLocation tagKey;
     private final @Nullable List<T> entities;
@@ -63,6 +68,27 @@ public class MappedEntitySet<T> {
         return new MappedEntitySet<>(new ArrayList<>(0));
     }
 
+    public static <Z extends MappedEntity> MappedEntityRefSet<Z> readRefSet(PacketWrapper<?> wrapper) {
+        int count = wrapper.readVarInt() - 1;
+        if (count == -1) {
+            return new MappedEntitySet<>(wrapper.readIdentifier());
+        }
+        int[] entries = wrapper.readVarIntArrayOfSize(Math.min(count, 65536));
+        return new IdRefSetImpl<>(entries);
+    }
+
+    public static void writeRefSet(PacketWrapper<?> wrapper, MappedEntityRefSet<?> refSet) {
+        if (refSet instanceof IdRefSetImpl<?>) {
+            IdRefSetImpl<?> idRefSet = (IdRefSetImpl<?>) refSet;
+            wrapper.writeVarInt(idRefSet.entries.length + 1);
+            wrapper.writeVarIntArrayOfSize(idRefSet.entries);
+        } else if (refSet instanceof MappedEntitySet<?>) {
+            write(wrapper, (MappedEntitySet<?>) refSet);
+        } else {
+            throw new UnsupportedOperationException("Unsupported mapped entity reference set implementation: " + refSet);
+        }
+    }
+
     public static <Z extends MappedEntity> MappedEntitySet<Z> read(
             PacketWrapper<?> wrapper, BiFunction<ClientVersion, Integer, Z> getter) {
         int count = wrapper.readVarInt() - 1;
@@ -90,8 +116,14 @@ public class MappedEntitySet<T> {
         }
     }
 
+    @Deprecated
     public static <Z extends MappedEntity> MappedEntitySet<Z> decode(
             NBT nbt, ClientVersion version, IRegistry<Z> registry) {
+        return decode(nbt, PacketWrapper.createDummyWrapper(version), registry);
+    }
+
+    public static <Z extends MappedEntity> MappedEntitySet<Z> decode(
+            NBT nbt, PacketWrapper<?> wrapper, IRegistry<Z> registry) {
         List<Z> list;
         if (nbt instanceof NBTString) {
             String singleEntry = ((NBTString) nbt).getValue();
@@ -117,7 +149,12 @@ public class MappedEntitySet<T> {
         return new MappedEntitySet<>(list);
     }
 
+    @Deprecated
     public static <Z extends MappedEntity> NBT encode(MappedEntitySet<Z> set, ClientVersion version) {
+        return encodeRefSet(PacketWrapper.createDummyWrapper(version), set);
+    }
+
+    public static <Z extends MappedEntity> NBT encode(PacketWrapper<?> wrapper, MappedEntitySet<Z> set) {
         if (set.tagKey != null) {
             return new NBTString("#" + set.tagKey);
         }
@@ -130,6 +167,69 @@ public class MappedEntitySet<T> {
         return listTag;
     }
 
+    public static <Z extends MappedEntity> MappedEntityRefSet<Z> decodeRefSet(NBT nbt, PacketWrapper<?> wrapper) {
+        return decodeRefSet(nbt, wrapper.getServerVersion().toClientVersion());
+    }
+
+    @Deprecated
+    public static <Z extends MappedEntity> MappedEntityRefSet<Z> decodeRefSet(NBT nbt, ClientVersion version) {
+        List<String> list;
+        if (nbt instanceof NBTString) {
+            String singleEntry = ((NBTString) nbt).getValue();
+            // check whether this is a tag key or a single-entry list
+            if (!singleEntry.isEmpty() && singleEntry.charAt(0) == '#') {
+                String tagName = singleEntry.substring(1);
+                ResourceLocation tagKey = new ResourceLocation(tagName);
+                return new MappedEntitySet<>(tagKey);
+            }
+            // single entry list
+            list = Collections.singletonList(singleEntry);
+        } else {
+            // assume it's a list
+            NBTList<?> listTag = (NBTList<?>) nbt;
+            list = new ArrayList<>(listTag.size());
+            for (NBT tag : listTag.getTags()) {
+                list.add(((NBTString) tag).getValue());
+            }
+        }
+        return new NameRefSetImpl<>(list);
+    }
+
+    public static <Z extends MappedEntity> NBT encodeRefSet(PacketWrapper<?> wrapper, MappedEntityRefSet<Z> refSet) {
+        return encodeRefSet(refSet, wrapper.getServerVersion().toClientVersion());
+    }
+
+    @Deprecated
+    public static <Z extends MappedEntity> NBT encodeRefSet(MappedEntityRefSet<Z> refSet, ClientVersion version) {
+        if (refSet instanceof NameRefSetImpl<?>) {
+            NameRefSetImpl<?> nameRefSet = (NameRefSetImpl<?>) refSet;
+            NBTList<NBTString> listTag = NBTList.createStringList();
+            for (String entityName : nameRefSet.entries) {
+                listTag.addTag(new NBTString(entityName));
+            }
+            return listTag;
+        } else if (refSet instanceof MappedEntitySet<?>) {
+            return encode((MappedEntitySet<?>) refSet, version);
+        } else {
+            throw new UnsupportedOperationException("Unsupported mapped entity reference set implementation: " + refSet);
+        }
+    }
+
+    @Override
+    public MappedEntitySet<T> resolve(PacketWrapper<?> wrapper, IRegistry<T> registry) {
+        return this;
+    }
+
+    @Override
+    public MappedEntitySet<T> resolve(ClientVersion version, IRegistryHolder registryHolder, IRegistry<T> registry) {
+        return this;
+    }
+
+    @Override
+    public MappedEntitySet<T> resolve(ClientVersion version, IRegistry<T> registry) {
+        return this;
+    }
+
     public boolean isEmpty() {
         return this.entities != null && this.entities.isEmpty();
     }
@@ -160,4 +260,84 @@ public class MappedEntitySet<T> {
     public String toString() {
         return "MappedEntitySet{tagKey=" + this.tagKey + ", entities=" + this.entities + '}';
     }
+
+    private static final class IdRefSetImpl<T extends MappedEntity> implements MappedEntityRefSet<T> {
+
+        private final int[] entries;
+
+        public IdRefSetImpl(int[] entries) {
+            this.entries = entries;
+        }
+
+        @Override
+        public MappedEntitySet<T> resolve(ClientVersion version, IRegistry<T> registry) {
+            List<T> entities = new ArrayList<>(this.entries.length);
+            for (int entityId : this.entries) {
+                entities.add(registry.getByIdOrThrow(version, entityId));
+            }
+            return new MappedEntitySet<>(entities);
+        }
+
+        @Override
+        public boolean isEmpty() {
+            return this.entries.length == 0;
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (!(obj instanceof IdRefSetImpl)) return false;
+            IdRefSetImpl<?> idRefSet = (IdRefSetImpl<?>) obj;
+            return Arrays.equals(this.entries, idRefSet.entries);
+        }
+
+        @Override
+        public int hashCode() {
+            return Arrays.hashCode(this.entries);
+        }
+
+        @Override
+        public String toString() {
+            return "IdRefSetImpl{entries=" + Arrays.toString(this.entries) + '}';
+        }
+    }
+
+    private static final class NameRefSetImpl<T extends MappedEntity> implements MappedEntityRefSet<T> {
+
+        private final List<String> entries;
+
+        public NameRefSetImpl(List<String> entries) {
+            this.entries = entries;
+        }
+
+        @Override
+        public MappedEntitySet<T> resolve(ClientVersion version, IRegistry<T> registry) {
+            List<T> entities = new ArrayList<>(this.entries.size());
+            for (String entityName : this.entries) {
+                entities.add(registry.getByNameOrThrow(entityName));
+            }
+            return new MappedEntitySet<>(entities);
+        }
+
+        @Override
+        public boolean isEmpty() {
+            return this.entries.isEmpty();
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (!(obj instanceof NameRefSetImpl)) return false;
+            NameRefSetImpl<?> that = (NameRefSetImpl<?>) obj;
+            return this.entries.equals(that.entries);
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hashCode(this.entries);
+        }
+
+        @Override
+        public String toString() {
+            return "NameRefSetImpl{entries=" + this.entries + '}';
+        }
+    }
 }

api/src/main/java/com/github/retrooper/packetevents/protocol/mapper/ResolvableEntity.java

@@ -0,0 +1,36 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2025 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.github.retrooper.packetevents.protocol.mapper;
+
+import com.github.retrooper.packetevents.protocol.player.ClientVersion;
+import com.github.retrooper.packetevents.util.mappings.IRegistryHolder;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+/**
+ * Used internally for loading additional data
+ * after registry entries have already been added.
+ */
+@ApiStatus.Internal
+@NullMarked
+public interface ResolvableEntity {
+
+    void doResolve(PacketWrapper<?> wrapper);
+}

api/src/main/java/com/github/retrooper/packetevents/protocol/nbt/NBTCompound.java

@@ -18,11 +18,17 @@
 
 package com.github.retrooper.packetevents.protocol.nbt;
 
+import com.github.retrooper.packetevents.protocol.util.NbtDecoder;
+import com.github.retrooper.packetevents.protocol.util.NbtEncoder;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.Contract;
 import org.jetbrains.annotations.Nullable;
 
 import java.text.MessageFormat;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
@@ -108,6 +114,20 @@ public class NBTCompound extends NBT {
         return getTagOfTypeOrNull(key, NBTCompound.class);
     }
 
+    public Number getNumberTagValueOrThrow(String key) {
+        return this.getNumberTagOrThrow(key).getAsNumber();
+    }
+
+    public @Nullable Number getNumberTagValueOrNull(String key) {
+        return this.getNumberTagValueOrDefault(key, null);
+    }
+
+    @Contract("_, !null -> !null")
+    public @Nullable Number getNumberTagValueOrDefault(String key, @Nullable Number number) {
+        NBTNumber tag = this.getNumberTagOrNull(key);
+        return tag != null ? tag.getAsNumber() : number;
+    }
+
     public NBTNumber getNumberTagOrThrow(String key) {
         return getTagOfTypeOrThrow(key, NBTNumber.class);
     }
@@ -207,9 +227,92 @@ public class NBTCompound extends NBT {
     }
 
     public boolean getBoolean(String string) {
+        return this.getBooleanOr(string, false);
+    }
+
+    public boolean getBooleanOr(String string, boolean defaultValue) {
         NBTNumber nbtByte = this.getTagOfTypeOrNull(string, NBTNumber.class);
-        // Empty byte tags are considered 0
-        return nbtByte != null && nbtByte.getAsByte() != 0;
+        return nbtByte != null ? nbtByte.getAsByte() != 0 : defaultValue;
+    }
+
+    @Contract("_, _, !null, _ -> !null")
+    public <T> @Nullable T getOr(String key, NbtDecoder<T> decoder, @Nullable T def, PacketWrapper<?> wrapper) {
+        NBT tag = this.getTagOrNull(key);
+        return tag != null ? decoder.decode(tag, wrapper) : def;
+    }
+
+    public <T> @Nullable T getOrNull(String key, NbtDecoder<T> decoder, PacketWrapper<?> wrapper) {
+        return this.getOr(key, decoder, null, wrapper);
+    }
+
+    public <T> T getOrThrow(String key, NbtDecoder<T> decoder, PacketWrapper<?> wrapper) {
+        return decoder.decode(this.getTagOrThrow(key), wrapper);
+    }
+
+    @Contract("_, _, !null, _ -> !null")
+    public <T> @Nullable List<T> getListOr(String key, NbtDecoder<T> decoder, @Nullable List<T> def, PacketWrapper<?> wrapper) {
+        NBT tag = this.getTagOrNull(key);
+        if (tag instanceof NBTList) {
+            // entries in list format
+            List<? extends NBT> tags = ((NBTList<?>) tag).getTags();
+            List<T> list = new ArrayList<>(tags.size());
+            for (NBT element : tags) {
+                list.add(decoder.decode(element, wrapper));
+            }
+            return list;
+        } else if (tag != null) {
+            // single entry
+            List<T> list = new ArrayList<>(1);
+            list.add(decoder.decode(tag, wrapper));
+            return list;
+        } else {
+            // null, return default
+            return def;
+        }
+    }
+
+    public <T> @Nullable List<T> getListOrNull(String key, NbtDecoder<T> decoder, PacketWrapper<?> wrapper) {
+        return this.getListOr(key, decoder, null, wrapper);
+    }
+
+    public <T> List<T> getListOrEmpty(String key, NbtDecoder<T> decoder, PacketWrapper<?> wrapper) {
+        return this.getListOr(key, decoder, Collections.emptyList(), wrapper);
+    }
+
+    public <T> List<T> getListOrThrow(String key, NbtDecoder<T> decoder, PacketWrapper<?> wrapper) {
+        List<T> list = this.getListOrNull(key, decoder, wrapper);
+        if (list == null) {
+            throw new IllegalStateException(MessageFormat.format("NBT {0} does not exist", key));
+        }
+        return list;
+    }
+
+    public <T> void set(String key, T value, NbtEncoder<T> encoder, PacketWrapper<?> wrapper) {
+        this.setTag(key, encoder.encode(wrapper, value));
+    }
+
+    public <T> void setList(String key, List<T> value, NbtEncoder<T> encoder, PacketWrapper<?> wrapper) {
+        if (value.isEmpty()) {
+            this.setTag(key, new NBTList<>(NBTType.END, 0));
+        } else {
+            // determine list type using first value in list
+            NBT firstVal = encoder.encode(wrapper, value.get(0));
+            NBTList<?> list = new NBTList<>(firstVal.getType(), value.size());
+            list.addTagUnsafe(firstVal);
+            // add remaining list entries
+            for (int i = 1; i < value.size(); i++) {
+                list.addTagUnsafe(encoder.encode(wrapper, value.get(i)));
+            }
+            this.setTag(key, list);
+        }
+    }
+
+    public <T> void setCompactList(String key, List<T> value, NbtEncoder<T> encoder, PacketWrapper<?> wrapper) {
+        if (value.size() == 1) {
+            this.set(key, value.get(0), encoder, wrapper);
+        } else {
+            this.setList(key, value, encoder, wrapper);
+        }
     }
 
     @Override