Exclude CODEOWNERS from language statistics

Add CODEOWNERS (one staff approval)
No-op update checker
2026-10-27 08:25:14 -04:00 · 2026-10-27 08:25:14 -04:00 · 2026-06-17 04:12:41 -04:00 · 2026-03-25 12:59:10 -04:00 · 2026-03-25 10:16:10 -04:00 · 2026-03-25 05:22:35 -04:00
1148 changed files with 2923833 additions and 214613 deletions
@@ -0,0 +1,6 @@
+[*.java]
+indent_style = space
+indent_size = 4
+ij_continuation_indent_size = 8
+ij_java_names_count_to_use_import_on_demand = 9999
+ij_java_class_count_to_use_import_on_demand = 9999
@@ -0,0 +1 @@
+.gitea/CODEOWNERS linguist-detectable=false
@@ -0,0 +1,3 @@
+# Pull requests request review from the eligible staff team(s).
+# One approval from either an Admin or Developer satisfies branch protection.
+*   @trueog/Admins @trueog/Developers
@@ -1,5 +1,3 @@
 # These are supported funding model platforms

-github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
-patreon: retrooper
-custom: ['https://paypal.me/retrooperdev']
+github: [retrooper]
@@ -8,48 +8,63 @@ jobs:
    runs-on: ubuntu-latest
    permissions:
      contents: read
-      packages: write

    steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v5

-      - name: Set up JDK 8
-        uses: actions/setup-java@v3
+      - name: Validate gradle wrapper
+        uses: gradle/actions/wrapper-validation@v5
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v5
        with:
-          java-version: '8'
-          distribution: 'adopt'
+          java-version: '21'
+          distribution: 'temurin'
+          cache: 'gradle'
          server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
          settings-path: ${{ github.workspace }} # location for the settings.xml file

      - name: Build with Gradle
-        run: chmod +x gradlew && ./gradlew shadowJar
+        run: chmod +x gradlew && ./gradlew build

      - name: Upload build artifacts api
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
        with:
          name: api-build
-          path: api/build/libs
+          path: build/libs/packetevents-api-*.jar

      - name: Upload build artifacts spigot
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
        with:
          name: spigot-build
-          path: spigot/build/libs
+          path: build/libs/packetevents-spigot-*.jar

      - name: Upload build artifacts netty-common
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
        with:
          name: netty-common-build
-          path: netty-common/build/libs
+          path: build/libs/packetevents-netty-common-*.jar

      - name: Upload build artifacts bungeecord
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
        with:
          name: bungeecord-build
-          path: bungeecord/build/libs
+          path: build/libs/packetevents-bungeecord-*.jar

      - name: Upload build artifacts velocity
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
        with:
          name: velocity-build
-          path: velocity/build/libs
+          path: build/libs/packetevents-velocity-*.jar
+
+      - name: Upload build artifacts fabric
+        uses: actions/upload-artifact@v4
+        with:
+          name: fabric-build
+          path: build/libs/packetevents-fabric-*.jar
+
+      - name: Upload build artifacts sponge
+        uses: actions/upload-artifact@v4
+        with:
+          name: sponge-build
+          path: build/libs/packetevents-sponge-*.jar
@@ -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@v5
+
+      - name: Validate gradle wrapper
+        uses: gradle/actions/wrapper-validation@v5
+
+      - name: Setup java 21
+        uses: actions/setup-java@v5
+        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
@@ -123,3 +123,8 @@ run/
 .project
 .settings/
 .classpath
+
+# Build Source Kotlin
+/buildSrc/.kotlin/
+
+.env
@@ -0,0 +1,451 @@
+!!!!! v2.11.2
+
+# PacketEvents 2.11.2 is finally out! 🎉
+
+This update fixes various bugs. It's encouraged that users update.
+Again, huge thanks to all users who have donated their hard-earned money to PacketEvents since the previous release. It's been received & it's very much appreciated.
+
+Recent donors: PebbleHost, SSomar1607, ipavdev, Suleyman Abulkhasan, frap
+
+Also, thanks to the contributors that made this update possible.
+
+If you intend on donating and do not wish to be mentioned, please add such a note on your donation.
+
+# Announcement 📢⚠️
+
+Visit our website: https://packetevents.com\
+Documentation: https://docs.packetevents.com\
+JavaDocs: https://javadocs.packetevents.com\
+I've released a new YouTube [video](https://youtu.be/G7qYRHpZVIo).
+
+## What's Changed (Summary)
+* Fixed SynchronizedRegistriesHandler issues
+* Fixed various equality/nullability issues with Registry values
+* Explicitly specify 'Locale#ROOT' for all String#toLowerCaser() calls
+* Removed 'end skylight' for 1.21.8 and below
+* Log warning message when failing to uninject from velocity initializer
+* Recommend release builds (and fallback to development builds) to users who run outdated software.
+* Add 'CHAIN' to the 'CHAINS' tag
+* Add new offset(Blockface face, int i) method to Vector3f/d/i classes
+* Fixed 'infiniburn' tag parsing for 1.18.1 and older
+* Fixed unexpected NPE if bukkit entity is null during unsafe lookup
+
+**View Full Changelog**: https://github.com/retrooper/packetevents/compare/v2.11.1...v2.11.2
+
+## If you want to support PacketEvents, consider donating to us on [PayPal](https://paypal.me/retrooperdev) or sponsoring us on [GitHub Sponsors](https://github.com/sponsors/retrooper).
+
+## Maven/Gradle Dependency Setup Guide
+
+**Check it out**: https://docs.packetevents.com/introduction/development-setup/
+
+
+!!!!! v2.11.1
+
+# PacketEvents 2.11.1 is finally out! 🎉
+
+This update fixes various bugs. It's encouraged that users update.
+Thanks to all users who donated after the previous release announcement. It's been received & it's appreciated.
+
+Recent donors: TrekCraft, 3add, Vadim Soudé
+
+If you intend on donating and do not wish to be mentioned, please add such a note on your donation.
+
+# Brief Announcement 📢⚠️
+
+### Visit our website: https://packetevents.com
+
+### Documentation: https://docs.packetevents.com
+
+### JavaDocs: https://javadocs.packetevents.com
+
+## What's Changed (Summary)
+* Fixed 'Can't resolve 'minecraft:day' in 'minecraft:timeline' for V_1_21_11'
+* Fixed decoding & encoding for WrapperLoginServerPluginRequest & WrapperLoginClientPluginResponse 
+* Improve StateTypes testing
+* Added system property packetevents.debug.nbt-codec-trace
+* Fixed Sound Codec
+
+**View Full Changelog**: https://github.com/retrooper/packetevents/compare/v2.11.0...v2.11.1
+
+## If you want to support PacketEvents, consider donating to us on [PayPal](https://paypal.me/retrooperdev) or sponsoring us on [GitHub Sponsors](https://github.com/sponsors/retrooper)
+
+## Maven/Gradle Dependency
+
+### **Check out**: https://docs.packetevents.com/getting-started
+
+!!!!! v2.11.0
+
+# PacketEvents 2.11.0 is finally out! 🎉
+
+This update adds support for Minecraft 1.21.11.
+
+# Brief Announcement 📢⚠️
+
+### Visit our website: https://packetevents.com
+
+### Documentation: https://docs.packetevents.com
+
+### JavaDocs: https://javadocs.packetevents.com
+
+## What's Changed (Summary)
+
+* Added support for Minecraft 1.21.11
+
+**View Full Changelog**: https://github.com/retrooper/packetevents/compare/v2.10.1...v2.11.0
+
+## If you want to support PacketEvents, consider donating to us on [PayPal](https://paypal.me/retrooperdev) or sponsoring us on [GitHub Sponsors](https://github.com/sponsors/retrooper)
+
+## Maven/Gradle Dependency
+
+### **Check out**: https://docs.packetevents.com/getting-started
+
+!!!!! v2.10.1
+
+# PacketEvents 2.10.1 is finally out! 🎉
+
+This update includes some bug fixes.
+
+# Brief Announcement 📢⚠️
+
+### Visit our website: https://packetevents.com
+
+### Documentation: https://docs.packetevents.com
+
+### JavaDocs: https://javadocs.packetevents.com
+
+## What's Changed (Summary)
+
+* Fixed for certain particle types on 1.21.9 & 1.21.10 Minecraft
+* Fixed the bee's component on 1.21.9 & 1.21.10 Minecraft
+* Correction of 'mul' calculation in LpVector3d
+
+**View Full Changelog**: https://github.com/retrooper/packetevents/compare/v2.10.0...v2.10.1
+
+## 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
+
+!!!!! v2.10.0
+
+# PacketEvents 2.10.0 is finally out! 🎉
+
+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)
+
+* Added 1.21.9 & 1.21.10 support
+* Various bug fixes (such as TPS reading, PlayerModelType reading/writing, and more)
+* Update adventure API
+
+**View Full Changelog**: https://github.com/retrooper/packetevents/compare/v2.9.5...v2.10.0
+
+## 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
+
+!!!!! v2.9.5
+
+# 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
+
+!!!!!
@@ -1,37 +1,40 @@
-# packetevents
+<!--suppress HtmlDeprecatedAttribute -->
+<div align="center">
+    <h2><i>PacketEvents</i></h2>
+    <h3>PacketEvents is a protocol library tailored to Minecraft Java Edition, designed to facilitate the processing and transmission of packets.</h3>
+    <a href="https://github.com/retrooper/packetevents/actions"><img src="https://img.shields.io/github/actions/workflow/status/retrooper/packetevents/gradle-publish.yml?style=for-the-badge&logo=github"></a>
+    <a href="https://discord.gg/DVHxPPxHZc"><img src="https://img.shields.io/discord/721686193061888071?color=5562e9&logo=discord&logoColor=white&style=for-the-badge"></a>
+    <img src="https://img.shields.io/github/license/retrooper/packetevents?style=for-the-badge&logo=github">
+    <a href="https://bstats.org/plugin/bukkit/packetevents/11327"><img src="https://img.shields.io/bstats/servers/11327?style=for-the-badge"></a>
+    <a href="https://github.com/retrooper/packetevents/releases"><img src="https://img.shields.io/github/downloads/retrooper/packetevents/total.svg?style=for-the-badge&logo=github"></a>
+</div>
+<h3>Resources</h3>

-[![](https://jitpack.io/v/retrooper/packetevents.svg)](https://jitpack.io/#retrooper/packetevents)
+- [Read documentation](https://docs.packetevents.com/)
+    - [Getting Started](https://docs.packetevents.com/development-setup)
+    - [JavaDocs](https://javadocs.packetevents.com)
+- [Releases](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)

-PacketEvents is a fast and efficient multi-platform packet processing library. Our packet wrappers are easy to use with multi-version support. With our API you can write code that runs on Spigot, BungeeCord, Velocity, and Fabric! Switch to PacketEvents today by joining \
-our [Discord Server](https://discord.me/packetevents) for help.
+<h3>Sponsors</h3>

-### Links
-* [Find release builds on SpigotMC](https://www.spigotmc.org/resources/packetevents-api.80279/)
-* [View documentation on our JavaDocs Page](https://packetevents.github.io/javadocs)
-### Setup
-[Learn more](https://github.com/retrooper/packetevents/wiki/Setup-2.0)
+<i>Thanks to the following sponsors for supporting this project:</i>

-### Sponsorships
-[![](https://www.ej-technologies.com/images/product_banners/jprofiler_small.png)](https://www.ej-technologies.com/products/jprofiler/overview.html)
+<a href="https://pebblehost.com"><img src="https://pebblehost.com/src/img/logos/main-old.png" width=150><br>

-### Statistics
-PacketEvents optionally collects statistics using [bStats](https://bstats.org/)\
-Check out our [bStats page](https://bstats.org/plugin/bukkit/packetevents/11327)
+<a href="https://www.ej-technologies.com"><img src="https://www.ej-technologies.com/images/product_banners/jprofiler_small.png"><br>

-This library is licensed under the GPLv3 (General Public License version 3). Here are a few sources to learn more about the license.\
-[![](https://www.gnu.org/graphics/gplv3-with-text-136x68.png)](https://github.com/retrooper/packetevents/blob/2.0/LICENSE)
-### GPL Resources
-* https://www.gnu.org/philosophy/free-sw.html
-* https://www.gnu.org/philosophy/free-sw.html#clarifying
-* https://www.gnu.org/licenses/copyleft.en.html
-* https://www.gnu.org/licenses/quick-guide-gplv3.html
-* https://gpl-violations.org/faq/sourcecode-faq/
+<h3>Credits</h3>

-### Credit to these projects
-[wiki.vg/Protocol](https://wiki.vg/Protocol)\
-[netty](https://github.com/netty/netty)\
-[gson](https://github.com/google/gson)\
-[adventure](https://github.com/KyoriPowered/adventure)\
+<i>Here are some projects that we are heavily inspired by, thus we have integrated</i>\
+<i>small portions of their code into our work.</i>
+
+[Protocol Documentation for the Minecraft Java Edition](https://minecraft.wiki/w/Minecraft_Wiki:Projects/wiki.vg_merge/Protocol)\
 [ViaVersion](https://github.com/ViaVersion/ViaVersion)\
 [ProtocolSupport](https://github.com/ProtocolSupport/ProtocolSupport)\
+[adventure](https://github.com/KyoriPowered/adventure)\
 [MCProtocolLib](https://github.com/GeyserMC/MCProtocolLib/)  
@@ -1,3 +0,0 @@
-dependencies {
-    compileOnly(adventureDependencies)
-}
@@ -0,0 +1,93 @@
+import com.github.retrooper.compression.strategy.dir.JsonBase64DataDirStrategy
+import com.github.retrooper.compression.strategy.dir.JsonRegistryCompressionDirStrategy
+import com.github.retrooper.compression.strategy.dir.JsonToNbtDirStrategy
+import com.github.retrooper.excludeAdventure
+
+plugins {
+    packetevents.`shadow-conventions`
+    packetevents.`library-conventions`
+    `mapping-compression`
+    `pe-version`
+}
+
+// papermc repo + disableAutoTargetJvm needed for mockbukkit
+repositories {
+    maven("https://repo.papermc.io/repository/maven-public/")
+}
+
+java {
+    withJavadocJar()
+}
+
+dependencies {
+    compileOnlyApi(libs.bundles.adventure)
+    compileOnlyApi(libs.bundles.adventure.serializers)
+    implementation(libs.adventure.api)
+    api(project(":patch:adventure-text-serializer-gson", "shadow")) {
+        excludeAdventure()
+    }
+    api(libs.adventure.text.serializer.legacy) {
+        excludeAdventure()
+    }
+    compileOnly(libs.gson)
+
+}
+
+mappingCompression {
+    mappingDirectory = rootDir.resolve("mappings")
+    outDirectory = project.layout.buildDirectory.dir("mappings/generated/assets/mappings")
+
+    with<JsonToNbtDirStrategy> {
+        compress("data")
+    }
+    with<JsonBase64DataDirStrategy> {
+        compress("item_base_components")
+    }
+    with<JsonRegistryCompressionDirStrategy> {
+        compress("registries")
+    }
+}
+
+tasks {
+    assemble {
+        setDependsOn(dependsOn.filterNot { it == "shadowNoAdventure" })
+    }
+
+    javadoc {
+        mustRunAfter(generateVersionsFile)
+    }
+
+    sourcesJar {
+        mustRunAfter(generateVersionsFile)
+    }
+
+    withType<JavaCompile> {
+        dependsOn(generateVersionsFile)
+    }
+
+    processResources {
+        dependsOn(compressMappings)
+        from(project.layout.buildDirectory.dir("mappings/generated").get())
+    }
+
+    generateVersionsFile {
+        packageName = "com.github.retrooper.packetevents.util"
+    }
+
+    shadowJar {
+        exclude {
+            val path = it.path
+            path.startsWith("net/kyori") && !path.startsWith("net/kyori/adventure/text/serializer") && !path.startsWith(
+                "net/kyori/option"
+            )
+        }
+    }
+}
+
+publishing {
+    publications {
+        named<MavenPublication>("shadow") {
+            artifact(tasks["javadocJar"])
+        }
+    }
+}
@@ -18,10 +18,13 @@

 package com.github.retrooper.packetevents;

+import org.jetbrains.annotations.ApiStatus;
+
 public final class PacketEvents {
    private static PacketEventsAPI<?> API;

    //Put these variable names anywhere else, they are really only for the injectors
+    @ApiStatus.Internal
    public static String IDENTIFIER, ENCODER_NAME, DECODER_NAME, CONNECTION_HANDLER_NAME, SERVER_CHANNEL_HANDLER_NAME,
    TIMEOUT_HANDLER_NAME;

@@ -27,33 +27,34 @@ import com.github.retrooper.packetevents.netty.NettyManager;
 import com.github.retrooper.packetevents.settings.PacketEventsSettings;
 import com.github.retrooper.packetevents.util.LogManager;
 import com.github.retrooper.packetevents.util.PEVersion;
+//Note: The PEVersions class is generated. Refer to PEVersionTask.kt
+import com.github.retrooper.packetevents.util.PEVersions;
 import com.github.retrooper.packetevents.util.updatechecker.UpdateChecker;

 import java.util.logging.Logger;

 public abstract class PacketEventsAPI<T> {
-    private static final EventManager EVENT_MANAGER = new EventManager();
-    private static final PacketEventsSettings SETTINGS = new PacketEventsSettings();
-    private static final UpdateChecker UPDATE_CHECKER = new UpdateChecker();
-    private final Logger LOGGER = Logger.getLogger(PacketEventsAPI.class.getName());
-    private static final LogManager LOG_MANAGER = new LogManager();
-    //TODO UPDATE
-    private static final PEVersion VERSION = new PEVersion(2, 0, 0);
-    
+    private final EventManager eventManager = new EventManager();
+    private final PacketEventsSettings settings = new PacketEventsSettings();
+    private final UpdateChecker updateChecker = new UpdateChecker();
+    private final LogManager logManager = new LogManager();
+    private static final Logger LOGGER = Logger.getLogger(PacketEventsAPI.class.getName());
+
    public EventManager getEventManager() {
-        return EVENT_MANAGER;
+        return eventManager;
    }

    public PacketEventsSettings getSettings() {
-        return SETTINGS;
+        return settings;
    }

    public UpdateChecker getUpdateChecker() {
-        return UPDATE_CHECKER;
+        return updateChecker;
    }

    public PEVersion getVersion() {
-        return VERSION;
+        //Note: The PEVersions class is generated by the auto-version task. Refer to PEVersionTask.kt
+        return PEVersions.CURRENT;
    }

    public Logger getLogger() {
@@ -61,7 +62,7 @@ public abstract class PacketEventsAPI<T> {
    }

    public LogManager getLogManager() {
-        return LOG_MANAGER;
+        return logManager;
    }

    public abstract void load();
@@ -74,6 +75,8 @@ public abstract class PacketEventsAPI<T> {

    public abstract void terminate();

+    public abstract boolean isTerminated();
+
    public abstract T getPlugin();

    public abstract ServerManager getServerManager();
@@ -0,0 +1,28 @@
+package com.github.retrooper.packetevents.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import java.lang.annotation.Documented;
+
+/**
+ * Marks an API element as obsolete and makes this information available
+ * at runtime via reflection. Use in conjunction with an IDE-recognized
+ * annotation like @ApiStatus.Obsolete if IDE warnings are also desired.
+ */
+@Documented
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.FIELD}) // Adjust targets as needed
+public @interface RuntimeObsolete {
+    /**
+     * Specifies in which version the API became obsolete.
+     * Should generally match the value in the corresponding @ApiStatus.Obsolete annotation.
+     */
+    String since() default "";
+
+    /**
+     * Optional: Add a reason or replacement suggestion.
+     */
+    String reason() default "";
+}
@@ -18,8 +18,7 @@

 package com.github.retrooper.packetevents.event;

-import com.github.retrooper.packetevents.event.PacketEvent;
-import com.github.retrooper.packetevents.event.PacketListenerAbstract;
+import org.jspecify.annotations.NullMarked;

 /**
 * The {@link PacketEvent} implements this interface.
@@ -31,7 +30,9 @@ import com.github.retrooper.packetevents.event.PacketListenerAbstract;
 * @author retrooper
 * @since 1.8
 */
+@NullMarked
 public interface CallableEvent {
+
    default void call(PacketListenerCommon listener) {
        listener.onPacketEventExternal((PacketEvent) this);
    }
@@ -22,13 +22,37 @@ import com.github.retrooper.packetevents.PacketEvents;
 import com.github.retrooper.packetevents.exception.InvalidHandshakeException;
 import org.jetbrains.annotations.Nullable;

-import java.util.Map;
-import java.util.Set;
+import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.CopyOnWriteArraySet;
 import java.util.logging.Level;

+/**
+ * Class for event managing. Implements both, internal and API methods.
+ *
+ * @apiNote It is highly recommended to register the event listeners at server start-up,
+ * without frequent modifications during runtime, since this class needs to recalculate all of
+ * its event listeners during any modifications. In other words, it assumes that reads (events fired)
+ * greatly outnumber writes (listeners modifications). If your case requires frequent listener modifications,
+ * open a pull request on GitHub and describe your case.
+ *
+ * @author retrooper
+ * @author ShadowOfHeaven (optimization)
+ *
+ */
+
 public class EventManager {
-    private final Map<Byte, Set<PacketListenerCommon>> listenersMap = new ConcurrentHashMap<>();
+
+    //Using a ConcurrentHashMap is faster and more secure here, compared to Collections.synchronizedMap(new EnumMap<>(PacketListenerPriority.class))
+    //This is mainly due to:
+    //1. On each modification Collections.synchronizedMap synchronizes the whole Map object, while ConcurrentHashMap only it's internal, currently modified Node
+    //2. ConcurrentHashMap won't fail in a multi-thread environment, while Collections.synchronizedMap is said to have a lot of potential problems,
+    //being a generalized method for synchronization
+    private final Map<PacketListenerPriority, Set<PacketListenerCommon>> listenersMap = new ConcurrentHashMap<>();
+    //Since reads greatly outnumber writes, create an array for the best possible iteration time
+    //Updated as a whole on writes, no index modifications are allowed
+    private volatile PacketListenerCommon[] listeners = new PacketListenerCommon[0];
+

    /**
     * Call the PacketEvent.
@@ -43,32 +67,43 @@ public class EventManager {
        callEvent(event, null);
    }

+
+    /**
+     * Call the PacketEvent.
+     * This method processes the event on all the registered dynamic packet event listeners.
+     * The {@link PacketListenerPriority#LOWEST} prioritized listeners will be processing first,
+     * the {@link PacketListenerPriority#MONITOR} will be processing last and can
+     * be the final decider whether the event has been cancelled or not.
+     *
+     * @param event                  {@link PacketEvent}
+     * @param postCallListenerAction The action to be run after all the listeners have finished processing
+     */
    public void callEvent(PacketEvent event, @Nullable Runnable postCallListenerAction) {
-        for (byte priority = PacketListenerPriority.LOWEST.getId(); priority <= PacketListenerPriority.MONITOR.getId(); priority++) {
-            Set<PacketListenerCommon> listeners = listenersMap.get(priority);
-            if (listeners != null) {
-                for (PacketListenerCommon listener : listeners) {
-                    try {
-                        event.call(listener);
-                    } catch (Exception t) {
-                        // ignore handshake exceptions
-                        if (t.getClass() != InvalidHandshakeException.class) {
-                            PacketEvents.getAPI().getLogger().log(Level.WARNING, "PacketEvents caught an unhandled exception while calling your listener.", t);
-                        }
-                    }
-                    if (postCallListenerAction != null) {
-                        postCallListenerAction.run();
-                    }
+        for (PacketListenerCommon listener : listeners) {
+            try {
+                event.call(listener);
+            } catch (Exception t) {
+                // ignore handshake exceptions
+                if (t.getClass() != InvalidHandshakeException.class && (t.getCause() == null || t.getCause().getClass() != InvalidHandshakeException.class)) {
+                    PacketEvents.getAPI().getLogger().log(Level.WARNING, "PacketEvents caught an unhandled exception while calling your listener.", t);
                }
            }
+            if (postCallListenerAction != null) {
+                postCallListenerAction.run();
+            }
        }
        // For performance reasons, we don't want to re-encode the packet if it's not needed.
-        if (event instanceof ProtocolPacketEvent && !((ProtocolPacketEvent<?>) event).needsReEncode()) {
-            ((ProtocolPacketEvent<?>) event).setLastUsedWrapper(null);
+        if (event instanceof ProtocolPacketEvent && !((ProtocolPacketEvent) event).needsReEncode()) {
+            ((ProtocolPacketEvent) event).setLastUsedWrapper(null);
        }
-
    }

+    /**
+     * Register the dynamic packet event listener.
+     *
+     * @param listener {@link PacketListenerCommon}
+     * @param priority {@link PacketListenerPriority}
+     */
    public PacketListenerCommon registerListener(PacketListener listener, PacketListenerPriority priority) {
        PacketListenerCommon packetListenerAbstract = listener.asAbstract(priority);
        return registerListener(packetListenerAbstract);
@@ -80,13 +115,8 @@ public class EventManager {
     * @param listener {@link PacketListenerCommon}
     */
    public PacketListenerCommon registerListener(PacketListenerCommon listener) {
-        byte priority = listener.getPriority().getId();
-        Set<PacketListenerCommon> listenerSet = listenersMap.get(priority);
-        if (listenerSet == null) {
-            listenerSet = ConcurrentHashMap.newKeySet();
-        }
-        listenerSet.add(listener);
-        listenersMap.put(priority, listenerSet);
+        this.registerListenerNoRecalculation(listener);
+        this.recalculateListeners();
        return listener;
    }

@@ -97,21 +127,22 @@ public class EventManager {
     */
    public PacketListenerCommon[] registerListeners(PacketListenerCommon... listeners) {
        for (PacketListenerCommon listener : listeners) {
-            registerListener(listener);
+            this.registerListenerNoRecalculation(listener);
        }
+        this.recalculateListeners();
        return listeners;
    }

    public void unregisterListener(PacketListenerCommon listener) {
-        Set<PacketListenerCommon> listenerSet = listenersMap.get(listener.getPriority().getId());
-        if (listenerSet == null) return;
-        listenerSet.remove(listener);
+        if (this.unregisterListenerNoRecalculation(listener)) this.recalculateListeners();
    }

    public void unregisterListeners(PacketListenerCommon... listeners) {
+        boolean modified = false;
        for (PacketListenerCommon listener : listeners) {
-            unregisterListener(listener);
+            modified |= this.unregisterListenerNoRecalculation(listener);//OR - at least one of these needs to be true to return true, meaning the boolean will permanently stay true if once set so
        }
+        if (modified) this.recalculateListeners();
    }


@@ -119,6 +150,36 @@ public class EventManager {
     * Unregister all dynamic packet event listeners.
     */
    public void unregisterAllListeners() {
-        listenersMap.clear();
+        this.listenersMap.clear();
+        synchronized (this) {//like booky10 said, the synchronization is necessary here
+            this.listeners = new PacketListenerCommon[0];
+        }
+    }
+
+    //Needs to be synchronized in order to avoid race conditions (for example where the 'listeners' variable
+    //is overridden by its non-up-to-date value, simply because it finished a bit later than the most recent update)
+    private void recalculateListeners() {
+        synchronized (this) {
+            List<PacketListenerCommon> list = new ArrayList<>();
+            //adds from LOWEST to MONITOR, so in the correct order
+            for (PacketListenerPriority priority : PacketListenerPriority.values()) {
+                Set<PacketListenerCommon> set = this.listenersMap.get(priority);
+                if (set != null) list.addAll(set);
+            }
+            this.listeners = list.toArray(new PacketListenerCommon[0]);
+        }
+    }
+
+    //Internal registration methods, specifically separated for lesser overhead when registering an array of Listeners
+
+    private void registerListenerNoRecalculation(PacketListenerCommon listener) {
+        Set<PacketListenerCommon> listenerSet = this.listenersMap.computeIfAbsent(listener.getPriority(), p -> new CopyOnWriteArraySet<>());
+        listenerSet.add(listener);
+    }
+
+    //Returns true if the listener was removed, so a modification occurred
+    private boolean unregisterListenerNoRecalculation(PacketListenerCommon listener) {
+        Set<PacketListenerCommon> listenerSet = this.listenersMap.get(listener.getPriority());
+        return listenerSet != null && listenerSet.remove(listener);
    }
 }
@@ -21,6 +21,7 @@ package com.github.retrooper.packetevents.event;

 import com.github.retrooper.packetevents.PacketEvents;
 import com.github.retrooper.packetevents.util.TimeStampMode;
+import org.jspecify.annotations.NullMarked;

 /**
 * An event in both of PacketEvents' event systems.
@@ -28,7 +29,9 @@ import com.github.retrooper.packetevents.util.TimeStampMode;
 * @author retrooper
 * @since 1.2.6
 */
+@NullMarked
 public abstract class PacketEvent implements CallableEvent {
+
    private final long timestamp;

    public PacketEvent() {
@@ -60,4 +63,4 @@ public abstract class PacketEvent implements CallableEvent {
    public void callPacketEventExternal(PacketListenerCommon listener) {
        listener.onPacketEventExternal(this);
    }
-}
+}
@@ -30,8 +30,7 @@ package com.github.retrooper.packetevents.event;
 */
 public enum PacketListenerPriority {
    /**
-     * Listener is of very low importance.
-     * This listener will be ran first.
+     * This listener will be run first and has little say in the outcome of events.
     */
    LOWEST,

@@ -41,8 +40,11 @@ public enum PacketListenerPriority {
    LOW,

    /**
-     * Default listener priority.
-     * Listener is neither important nor unimportant and may run normally.
+     * The normal listener priority.
+     * If possible, always pick this.
+     * It allows other projects to easily overturn your decisions.
+     * Moreover, it is pretty bold to assume that your project should
+     * always have the final say.
     */
    NORMAL,

@@ -52,13 +54,13 @@ public enum PacketListenerPriority {
    HIGH,

    /**
-     * Listener is of critical importance and wants to decide the cancellation of an event.
+     * Listener is of critical importance. Use this to decide the final state of packets.
     */
    HIGHEST,

    /**
-     * Listener is purely trying to decide the cancellation of an event.
-     * This listener should be ran last.
+     * Only use this priority if you want to perform logic based on the outcome of an event.
+     * Please do not modify packets in this stage.
     */
    MONITOR;

@@ -18,24 +18,31 @@

 package com.github.retrooper.packetevents.event;

-import com.github.retrooper.packetevents.event.simple.*;
 import com.github.retrooper.packetevents.exception.PacketProcessException;
 import com.github.retrooper.packetevents.manager.server.ServerVersion;
 import com.github.retrooper.packetevents.netty.buffer.ByteBufHelper;
 import com.github.retrooper.packetevents.protocol.PacketSide;
 import com.github.retrooper.packetevents.protocol.packettype.PacketTypeCommon;
 import com.github.retrooper.packetevents.protocol.player.User;
+import org.jetbrains.annotations.UnknownNullability;
+import org.jspecify.annotations.NullMarked;

-public class PacketReceiveEvent extends ProtocolPacketEvent<Object> {
-    protected PacketReceiveEvent(Object channel, User user, Object player, Object rawByteBuf,
-                                 boolean autoProtocolTranslation) throws PacketProcessException {
+@NullMarked
+public class PacketReceiveEvent extends ProtocolPacketEvent {
+
+    protected PacketReceiveEvent(
+            Object channel, User user,
+            @UnknownNullability Object player, Object rawByteBuf,
+            boolean autoProtocolTranslation
+    ) throws PacketProcessException {
        super(PacketSide.CLIENT, channel, user, player, rawByteBuf, autoProtocolTranslation);
    }

-    protected PacketReceiveEvent(int packetID, PacketTypeCommon packetType,
-                                 ServerVersion serverVersion,
-                                 Object channel, User user, Object player,
-                                 Object byteBuf) throws PacketProcessException {
+    protected PacketReceiveEvent(
+            int packetID, PacketTypeCommon packetType, ServerVersion serverVersion,
+            Object channel, User user,
+            @UnknownNullability Object player, Object byteBuf
+    ) throws PacketProcessException {
        super(packetID, packetType, serverVersion,
                channel, user, player, byteBuf);
    }
@@ -47,20 +54,8 @@ public class PacketReceiveEvent extends ProtocolPacketEvent<Object> {

    @Override
    public PacketReceiveEvent clone() {
-        if (this instanceof PacketHandshakeReceiveEvent) {
-            return ((PacketHandshakeReceiveEvent)this).clone();
-        }
-        else if (this instanceof PacketStatusReceiveEvent) {
-            return ((PacketStatusReceiveEvent)this).clone();
-        }
-        else if (this instanceof PacketLoginReceiveEvent) {
-            return ((PacketLoginReceiveEvent)this).clone();
-        }
-        else if (this instanceof PacketPlayReceiveEvent) {
-            return ((PacketPlayReceiveEvent)this).clone();
-        }
-        else {
-            return null;
-        }
+        Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
+        return new PacketReceiveEvent(getPacketId(), getPacketType(), getServerVersion(),
+                getChannel(), getUser(), getPlayer(), clonedBuffer);
    }
 }
@@ -18,32 +18,38 @@

 package com.github.retrooper.packetevents.event;

-import com.github.retrooper.packetevents.event.simple.PacketLoginSendEvent;
-import com.github.retrooper.packetevents.event.simple.PacketPlaySendEvent;
-import com.github.retrooper.packetevents.event.simple.PacketStatusSendEvent;
 import com.github.retrooper.packetevents.exception.PacketProcessException;
 import com.github.retrooper.packetevents.manager.server.ServerVersion;
+import com.github.retrooper.packetevents.netty.buffer.ByteBufHelper;
 import com.github.retrooper.packetevents.protocol.PacketSide;
 import com.github.retrooper.packetevents.protocol.packettype.PacketTypeCommon;
 import com.github.retrooper.packetevents.protocol.player.User;
+import org.jetbrains.annotations.UnknownNullability;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;

 import java.util.ArrayList;
 import java.util.List;

-public class PacketSendEvent extends ProtocolPacketEvent<Object> {
-    private List<Runnable> tasksAfterSend = null;
-    protected PacketSendEvent(Object channel, User user, Object player, Object rawByteBuf,
-                              boolean autoProtocolTranslation) throws PacketProcessException {
+@NullMarked
+public class PacketSendEvent extends ProtocolPacketEvent {
+
+    private @Nullable List<Runnable> tasksAfterSend = null;
+
+    protected PacketSendEvent(
+            Object channel, User user,
+            @UnknownNullability Object player, Object rawByteBuf,
+            boolean autoProtocolTranslation
+    ) throws PacketProcessException {
        super(PacketSide.SERVER, channel, user, player, rawByteBuf, autoProtocolTranslation);
    }

-    protected PacketSendEvent(int packetID, PacketTypeCommon packetType,
-                              ServerVersion serverVersion,
-                              Object channel, User user,
-                              Object player, Object byteBuf) throws PacketProcessException {
-        super(packetID, packetType,
-                serverVersion,
-                channel, user, player, byteBuf);
+    protected PacketSendEvent(
+            int packetID, PacketTypeCommon packetType, ServerVersion serverVersion,
+            Object channel, User user,
+            @UnknownNullability Object player, Object byteBuf
+    ) throws PacketProcessException {
+        super(packetID, packetType, serverVersion, channel, user, player, byteBuf);
    }

    @Override
@@ -65,17 +71,8 @@ public class PacketSendEvent extends ProtocolPacketEvent<Object> {

    @Override
    public PacketSendEvent clone() {
-        if (this instanceof PacketStatusSendEvent) {
-            return ((PacketStatusSendEvent)this).clone();
-        }
-        else if (this instanceof PacketLoginSendEvent) {
-            return ((PacketLoginSendEvent)this).clone();
-        }
-        else if (this instanceof PacketPlaySendEvent) {
-            return ((PacketPlaySendEvent)this).clone();
-        }
-        else {
-            return null;
-        }
+        Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
+        return new PacketSendEvent(getPacketId(), getPacketType(), getServerVersion(),
+                getChannel(), getUser(), getPlayer(), clonedBuffer);
    }
 }
@@ -18,17 +18,22 @@

 package com.github.retrooper.packetevents.event;

+import org.jetbrains.annotations.UnknownNullability;
+import org.jspecify.annotations.NullMarked;
+
 /**
 * Every event that has an associated player is recommended to implement this interface.
 *
 * @author retrooper
 * @since 1.6.9
 */
-public interface PlayerEvent<T> {
+@NullMarked
+public interface PlayerEvent {
+
    /**
     * Associated player.
     *
     * @return Player.
     */
-    T getPlayer();
+    <T> @UnknownNullability T getPlayer();
 }
@@ -32,39 +32,50 @@ 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.NotNull;
-import org.jetbrains.annotations.Nullable;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.UnknownNullability;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;

 import java.net.InetSocketAddress;
+import java.net.SocketAddress;
 import java.util.ArrayList;
 import java.util.List;

-public abstract class ProtocolPacketEvent<T> extends PacketEvent implements PlayerEvent<T>, CancellableEvent, UserEvent {
-    private final Object channel;
-    private final ConnectionState connectionState;
-    private final User user;
-    private final T player;
-    private Object byteBuf;
+@NullMarked
+public abstract class ProtocolPacketEvent extends PacketEvent implements PlayerEvent, CancellableEvent, UserEvent {
+
    private final int packetID;
    private final PacketTypeCommon packetType;
    private ServerVersion serverVersion;
+
+    private final Object channel;
+    private final ConnectionState connectionState;
+    private final User user;
+
+    private @UnknownNullability Object player;
+    private Object byteBuf;
+
    private boolean cancel;
-    private PacketWrapper<?> lastUsedWrapper;
-    private List<Runnable> postTasks = null;
+    private @Nullable PacketWrapper<?> lastUsedWrapper;
+    private @Nullable List<Runnable> postTasks = null;
+
    private boolean cloned;
    private boolean needsReEncode = PacketEvents.getAPI().getSettings().reEncodeByDefault();

-    public ProtocolPacketEvent(PacketSide packetSide, Object channel,
-                               User user, T player, Object byteBuf,
-                               boolean autoProtocolTranslation) throws PacketProcessException {
+    public ProtocolPacketEvent(
+            PacketSide packetSide, Object channel, User user,
+            @UnknownNullability Object player, Object byteBuf,
+            boolean autoProtocolTranslation
+    ) throws PacketProcessException {
        this.channel = channel;
        this.user = user;
        this.player = player;
+
        if (autoProtocolTranslation || user.getClientVersion() == null) {
            this.serverVersion = PacketEvents.getAPI().getServerManager().getVersion();
        } else {
-            //TODO Optimize
-            this.serverVersion = user.getClientVersion().toServerVersion();
+            this.serverVersion = user.getPacketVersion().toServerVersion();
        }

        this.byteBuf = byteBuf;
@@ -77,21 +88,25 @@ public abstract class ProtocolPacketEvent<T> extends PacketEvent implements Play
        } catch (Exception e) {
            throw new PacketProcessException("Failed to read the Packet ID of a packet. (Size: " + size + ")");
        }
+
        ClientVersion version = serverVersion.toClientVersion();
-        this.packetType = PacketType.getById(packetSide, user.getConnectionState(),
-                version, packetID);
-        if (this.packetType == null) {
-            // mojang fucked up and keeps sending disconnect packets in the wrong protocol state
+        this.connectionState = packetSide == PacketSide.CLIENT ? user.getDecoderState() : user.getEncoderState();
+        PacketTypeCommon packetType = PacketType.getById(packetSide, this.connectionState, version, this.packetID);
+        if (packetType == null) {
+            // mojang messed up and keeps sending disconnect packets in the wrong protocol state
            if (PacketType.getById(packetSide, ConnectionState.PLAY, version, packetID) == PacketType.Play.Server.DISCONNECT) {
                throw new InvalidDisconnectPacketSend();
            }
-            throw new PacketProcessException("Failed to map the Packet ID " + packetID + " to a PacketType constant. Bound: " + packetSide.getOpposite() + ", Connection state: " + user.getConnectionState() + ", Server version: " + serverVersion.getReleaseName());
+            throw new PacketProcessException("Failed to map the Packet ID " + packetID + " to a PacketType constant. Bound: " + packetSide.getOpposite() + ", Connection state: " + user.getDecoderState() + ", Server version: " + serverVersion.getReleaseName());
        }
-        this.connectionState = user.getConnectionState();
+        this.packetType = packetType;
    }

-    public ProtocolPacketEvent(int packetID, PacketTypeCommon packetType, ServerVersion serverVersion, Object channel,
-                               User user, T player, Object byteBuf) {
+    public ProtocolPacketEvent(
+            int packetID, PacketTypeCommon packetType, ServerVersion serverVersion,
+            Object channel, User user,
+            @UnknownNullability Object player, Object byteBuf
+    ) {
        this.channel = channel;
        this.user = user;
        this.player = player;
@@ -99,8 +114,10 @@ public abstract class ProtocolPacketEvent<T> extends PacketEvent implements Play
        this.byteBuf = byteBuf;
        this.packetID = packetID;
        this.packetType = packetType;
-        this.connectionState = user.getConnectionState();
-        cloned = true;
+
+        this.connectionState = (packetType != null && packetType.getSide() == PacketSide.SERVER)
+                ? user.getEncoderState() : user.getDecoderState();
+        this.cloned = true;
    }

    public void markForReEncode(boolean needsReEncode) {
@@ -111,7 +128,6 @@ public abstract class ProtocolPacketEvent<T> extends PacketEvent implements Play
        return needsReEncode;
    }

-
    public boolean isClone() {
        return cloned;
    }
@@ -120,8 +136,15 @@ public abstract class ProtocolPacketEvent<T> extends PacketEvent implements Play
        return channel;
    }

+    public SocketAddress getAddress() {
+        return ChannelHelper.remoteAddress(this.channel);
+    }
+
+    /**
+     * <strong>WARNING:</strong> This doesn't support local addresses or unix sockets.
+     */
    public InetSocketAddress getSocketAddress() {
-        return (InetSocketAddress) ChannelHelper.remoteAddress(channel);
+        return (InetSocketAddress) this.getAddress();
    }

    @Override
@@ -130,22 +153,30 @@ public abstract class ProtocolPacketEvent<T> extends PacketEvent implements Play
    }

    @Override
-    public T getPlayer() {
-        return player;
+    public <T> @UnknownNullability T getPlayer() {
+        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.
+     */
    public ConnectionState getConnectionState() {
        return connectionState;
    }

-    //TODO Possibly put clientversion inside User class and remove here
    @Deprecated
    public ClientVersion getClientVersion() {
        return user.getClientVersion();
    }

    @Deprecated
-    public void setClientVersion(@NotNull ClientVersion clientVersion) {
+    public void setClientVersion(ClientVersion clientVersion) {
        PacketEvents.getAPI().getLogManager().debug("Setting client version with deprecated method " + clientVersion.getReleaseName());
        user.setClientVersion(clientVersion);
    }
@@ -154,7 +185,8 @@ public abstract class ProtocolPacketEvent<T> extends PacketEvent implements Play
        return serverVersion;
    }

-    public void setServerVersion(@NotNull ServerVersion serverVersion) {
+    @Deprecated
+    public void setServerVersion(ServerVersion serverVersion) {
        this.serverVersion = serverVersion;
    }

@@ -166,7 +198,6 @@ public abstract class ProtocolPacketEvent<T> extends PacketEvent implements Play
        this.byteBuf = byteBuf;
    }

-    @Deprecated
    public int getPacketId() {
        return packetID;
    }
@@ -211,7 +242,7 @@ public abstract class ProtocolPacketEvent<T> extends PacketEvent implements Play
    }

    @Override
-    public ProtocolPacketEvent<?> clone() {
+    public ProtocolPacketEvent clone() {
        return this instanceof PacketReceiveEvent ? ((PacketReceiveEvent) this).clone()
                : ((PacketSendEvent) this).clone();
    }
@@ -41,7 +41,11 @@ public abstract class SimplePacketListenerAbstract extends PacketListenerCommon
            onPacketStatusReceive((PacketStatusReceiveEvent) event);
        } else if (event instanceof PacketLoginReceiveEvent) {
            onPacketLoginReceive((PacketLoginReceiveEvent) event);
-        } else if (event instanceof PacketPlayReceiveEvent) {
+        }
+        else if (event instanceof PacketConfigReceiveEvent) {
+            onPacketConfigReceive((PacketConfigReceiveEvent) event);
+        }
+        else if (event instanceof PacketPlayReceiveEvent) {
            onPacketPlayReceive((PacketPlayReceiveEvent) event);
        }
    }
@@ -52,7 +56,11 @@ public abstract class SimplePacketListenerAbstract extends PacketListenerCommon
            onPacketStatusSend((PacketStatusSendEvent) event);
        } else if (event instanceof PacketLoginSendEvent) {
            onPacketLoginSend((PacketLoginSendEvent) event);
-        } else if (event instanceof PacketPlaySendEvent) {
+        }
+        else if (event instanceof PacketConfigSendEvent) {
+            onPacketConfigSend((PacketConfigSendEvent) event);
+        }
+        else if (event instanceof PacketPlaySendEvent) {
            onPacketPlaySend((PacketPlaySendEvent) event);
        }
    }
@@ -72,6 +80,12 @@ public abstract class SimplePacketListenerAbstract extends PacketListenerCommon
    public void onPacketLoginSend(PacketLoginSendEvent event) {
    }

+    public void onPacketConfigReceive(PacketConfigReceiveEvent event) {
+    }
+
+    public void onPacketConfigSend(PacketConfigSendEvent event) {
+    }
+
    public void onPacketPlayReceive(PacketPlayReceiveEvent event) {
    }

@@ -19,8 +19,11 @@
 package com.github.retrooper.packetevents.event;

 import com.github.retrooper.packetevents.protocol.player.User;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class UserConnectEvent extends PacketEvent implements CancellableEvent, UserEvent {

-public class UserConnectEvent extends PacketEvent implements CancellableEvent, UserEvent{
    private final User user;
    private boolean cancelled;

@@ -19,8 +19,11 @@
 package com.github.retrooper.packetevents.event;

 import com.github.retrooper.packetevents.protocol.player.User;
+import org.jspecify.annotations.NullMarked;

+@NullMarked
 public class UserDisconnectEvent extends PacketEvent implements UserEvent {
+
    private final User user;

    public UserDisconnectEvent(User user) {
@@ -19,6 +19,7 @@
 package com.github.retrooper.packetevents.event;

 import com.github.retrooper.packetevents.protocol.player.User;
+import org.jspecify.annotations.NullMarked;

 /**
 * Event that involves users.
@@ -26,6 +27,8 @@ import com.github.retrooper.packetevents.protocol.player.User;
 * @author retrooper
 * @since 2.0.0
 */
+@NullMarked
 public interface UserEvent {
+
    User getUser();
 }
@@ -19,8 +19,11 @@
 package com.github.retrooper.packetevents.event;

 import com.github.retrooper.packetevents.protocol.player.User;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class UserLoginEvent extends PacketEvent implements CallableEvent, UserEvent, PlayerEvent {

-public class UserLoginEvent extends PacketEvent implements CallableEvent, UserEvent, PlayerEvent<Object> {
    private final User user;
    private final Object player;

@@ -35,8 +38,8 @@ public class UserLoginEvent extends PacketEvent implements CallableEvent, UserEv
    }

    @Override
-    public Object getPlayer() {
-        return player;
+    public <T> T getPlayer() {
+        return (T) player;
    }

    @Override
@@ -0,0 +1,60 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2022 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.event.simple;
+
+import com.github.retrooper.packetevents.event.PacketReceiveEvent;
+import com.github.retrooper.packetevents.exception.PacketProcessException;
+import com.github.retrooper.packetevents.manager.server.ServerVersion;
+import com.github.retrooper.packetevents.netty.buffer.ByteBufHelper;
+import com.github.retrooper.packetevents.protocol.packettype.PacketType;
+import com.github.retrooper.packetevents.protocol.packettype.PacketTypeCommon;
+import com.github.retrooper.packetevents.protocol.player.User;
+import org.jetbrains.annotations.UnknownNullability;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class PacketConfigReceiveEvent extends PacketReceiveEvent {
+
+    public PacketConfigReceiveEvent(
+            Object channel, User user,
+            @UnknownNullability Object player, Object rawByteBuf,
+            boolean autoProtocolTranslation
+    ) throws PacketProcessException {
+        super(channel, user, player, rawByteBuf, autoProtocolTranslation);
+    }
+
+    protected PacketConfigReceiveEvent(
+            int packetId, PacketTypeCommon packetType, ServerVersion serverVersion,
+            Object channel, User user,
+            @UnknownNullability Object player, Object byteBuf
+    ) throws PacketProcessException {
+        super(packetId, packetType, serverVersion, channel, user, player, byteBuf);
+    }
+
+    @Override
+    public PacketConfigReceiveEvent clone() {
+        Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
+        return new PacketConfigReceiveEvent(getPacketId(), getPacketType(), getServerVersion(),
+                getChannel(), getUser(), getPlayer(), clonedBuffer);
+    }
+
+    public PacketType.Configuration.Client getPacketType() {
+        return (PacketType.Configuration.Client) super.getPacketType();
+    }
+}
@@ -0,0 +1,60 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2022 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.event.simple;
+
+import com.github.retrooper.packetevents.event.PacketSendEvent;
+import com.github.retrooper.packetevents.exception.PacketProcessException;
+import com.github.retrooper.packetevents.manager.server.ServerVersion;
+import com.github.retrooper.packetevents.netty.buffer.ByteBufHelper;
+import com.github.retrooper.packetevents.protocol.packettype.PacketType;
+import com.github.retrooper.packetevents.protocol.packettype.PacketTypeCommon;
+import com.github.retrooper.packetevents.protocol.player.User;
+import org.jetbrains.annotations.UnknownNullability;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public class PacketConfigSendEvent extends PacketSendEvent {
+
+    public PacketConfigSendEvent(
+            Object channel, User user,
+            @UnknownNullability Object player, Object rawByteBuf,
+            boolean autoProtocolTranslation
+    ) throws PacketProcessException {
+        super(channel, user, player, rawByteBuf, autoProtocolTranslation);
+    }
+
+    protected PacketConfigSendEvent(
+            int packetId, PacketTypeCommon packetType, ServerVersion serverVersion,
+            Object channel, User user,
+            @UnknownNullability Object player, Object byteBuf
+    ) throws PacketProcessException {
+        super(packetId, packetType, serverVersion, channel, user, player, byteBuf);
+    }
+
+    @Override
+    public PacketConfigSendEvent clone() {
+        Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
+        return new PacketConfigSendEvent(getPacketId(), getPacketType(), getServerVersion(),
+                getChannel(), getUser(), getPlayer(), clonedBuffer);
+    }
+
+    public PacketType.Configuration.Server getPacketType() {
+        return (PacketType.Configuration.Server) super.getPacketType();
+    }
+}
@@ -25,31 +25,33 @@ import com.github.retrooper.packetevents.netty.buffer.ByteBufHelper;
 import com.github.retrooper.packetevents.protocol.packettype.PacketType;
 import com.github.retrooper.packetevents.protocol.packettype.PacketTypeCommon;
 import com.github.retrooper.packetevents.protocol.player.User;
+import org.jetbrains.annotations.UnknownNullability;
+import org.jspecify.annotations.NullMarked;

+@NullMarked
 public class PacketHandshakeReceiveEvent extends PacketReceiveEvent {
-    public PacketHandshakeReceiveEvent(Object channel, User user,
-                                       Object player, Object rawByteBuf,
-                                       boolean autoProtocolTranslation) throws PacketProcessException {
+
+    public PacketHandshakeReceiveEvent(
+            Object channel, User user,
+            @UnknownNullability Object player, Object rawByteBuf,
+            boolean autoProtocolTranslation
+    ) throws PacketProcessException {
        super(channel, user, player, rawByteBuf, autoProtocolTranslation);
    }

-    protected PacketHandshakeReceiveEvent(int packetId, PacketTypeCommon packetType,
-                                          ServerVersion serverVersion,
-                                          Object channel,
-                                          User user, Object player, Object byteBuf) throws PacketProcessException {
+    protected PacketHandshakeReceiveEvent(
+            int packetId, PacketTypeCommon packetType, ServerVersion serverVersion,
+            Object channel, User user,
+            @UnknownNullability Object player, Object byteBuf
+    ) throws PacketProcessException {
        super(packetId, packetType, serverVersion, channel, user, player, byteBuf);
    }

    @Override
    public PacketHandshakeReceiveEvent clone() {
-        try {
-            Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
-            return new PacketHandshakeReceiveEvent(getPacketId(), getPacketType(), getServerVersion(),
-                    getChannel(), getUser(), getPlayer(), clonedBuffer);
-        } catch (PacketProcessException e) {
-            e.printStackTrace();
-        }
-        return null;
+        Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
+        return new PacketHandshakeReceiveEvent(getPacketId(), getPacketType(), getServerVersion(),
+                getChannel(), getUser(), getPlayer(), clonedBuffer);
    }

    public PacketType.Handshaking.Client getPacketType() {
@@ -7,31 +7,33 @@ import com.github.retrooper.packetevents.netty.buffer.ByteBufHelper;
 import com.github.retrooper.packetevents.protocol.packettype.PacketType;
 import com.github.retrooper.packetevents.protocol.packettype.PacketTypeCommon;
 import com.github.retrooper.packetevents.protocol.player.User;
+import org.jetbrains.annotations.UnknownNullability;
+import org.jspecify.annotations.NullMarked;

+@NullMarked
 public class PacketHandshakeSendEvent extends PacketSendEvent {
-    public PacketHandshakeSendEvent(Object channel, User user,
-                                       Object player, Object rawByteBuf,
-                                       boolean autoProtocolTranslation) throws PacketProcessException {
+
+    public PacketHandshakeSendEvent(
+            Object channel, User user,
+            @UnknownNullability Object player, Object rawByteBuf,
+            boolean autoProtocolTranslation
+    ) throws PacketProcessException {
        super(channel, user, player, rawByteBuf, autoProtocolTranslation);
    }

-    protected PacketHandshakeSendEvent(int packetId, PacketTypeCommon packetType,
-                                          ServerVersion serverVersion,
-                                          Object channel,
-                                          User user, Object player, Object byteBuf) throws PacketProcessException {
+    protected PacketHandshakeSendEvent(
+            int packetId, PacketTypeCommon packetType, ServerVersion serverVersion,
+            Object channel, User user,
+            @UnknownNullability Object player, Object byteBuf
+    ) throws PacketProcessException {
        super(packetId, packetType, serverVersion, channel, user, player, byteBuf);
    }

    @Override
    public PacketHandshakeSendEvent clone() {
-        try {
-            Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
-            return new PacketHandshakeSendEvent(getPacketId(), getPacketType(), getServerVersion(),
-                    getChannel(), getUser(), getPlayer(), clonedBuffer);
-        } catch (PacketProcessException e) {
-            e.printStackTrace();
-        }
-        return null;
+        Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
+        return new PacketHandshakeSendEvent(getPacketId(), getPacketType(), getServerVersion(),
+                getChannel(), getUser(), getPlayer(), clonedBuffer);
    }

    public PacketType.Handshaking.Client getPacketType() {
@@ -25,31 +25,33 @@ import com.github.retrooper.packetevents.netty.buffer.ByteBufHelper;
 import com.github.retrooper.packetevents.protocol.packettype.PacketType;
 import com.github.retrooper.packetevents.protocol.packettype.PacketTypeCommon;
 import com.github.retrooper.packetevents.protocol.player.User;
+import org.jetbrains.annotations.UnknownNullability;
+import org.jspecify.annotations.NullMarked;

+@NullMarked
 public class PacketLoginReceiveEvent extends PacketReceiveEvent {
-    public PacketLoginReceiveEvent(Object channel, User user, Object player,
-                                   Object rawByteBuf,
-                                   boolean autoProtocolTranslation) throws PacketProcessException {
+
+    public PacketLoginReceiveEvent(
+            Object channel, User user,
+            @UnknownNullability Object player, Object rawByteBuf,
+            boolean autoProtocolTranslation
+    ) throws PacketProcessException {
        super(channel, user, player, rawByteBuf, autoProtocolTranslation);
    }

-    protected PacketLoginReceiveEvent(int packetId, PacketTypeCommon packetType,
-                                      ServerVersion serverVersion,
-                                      Object channel,
-                                      User user, Object player, Object byteBuf) throws PacketProcessException {
+    protected PacketLoginReceiveEvent(
+            int packetId, PacketTypeCommon packetType, ServerVersion serverVersion,
+            Object channel, User user,
+            @UnknownNullability Object player, Object byteBuf
+    ) throws PacketProcessException {
        super(packetId, packetType, serverVersion, channel, user, player, byteBuf);
    }

    @Override
    public PacketLoginReceiveEvent clone() {
-        try {
-            Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
-            return new PacketLoginReceiveEvent(getPacketId(), getPacketType(), getServerVersion(),
-                    getChannel(), getUser(), getPlayer(), clonedBuffer);
-        } catch (PacketProcessException e) {
-            e.printStackTrace();
-        }
-        return null;
+        Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
+        return new PacketLoginReceiveEvent(getPacketId(), getPacketType(), getServerVersion(),
+                getChannel(), getUser(), getPlayer(), clonedBuffer);
    }


@@ -25,30 +25,33 @@ import com.github.retrooper.packetevents.netty.buffer.ByteBufHelper;
 import com.github.retrooper.packetevents.protocol.packettype.PacketType;
 import com.github.retrooper.packetevents.protocol.packettype.PacketTypeCommon;
 import com.github.retrooper.packetevents.protocol.player.User;
+import org.jetbrains.annotations.UnknownNullability;
+import org.jspecify.annotations.NullMarked;

+@NullMarked
 public class PacketLoginSendEvent extends PacketSendEvent {
-    public PacketLoginSendEvent(Object channel, User user, Object player, Object rawByteBuf,
-                                boolean autoProtocolTranslation) throws PacketProcessException {
+
+    public PacketLoginSendEvent(
+            Object channel, User user,
+            @UnknownNullability Object player, Object rawByteBuf,
+            boolean autoProtocolTranslation
+    ) throws PacketProcessException {
        super(channel, user, player, rawByteBuf, autoProtocolTranslation);
    }

-    protected PacketLoginSendEvent(int packetId, PacketTypeCommon packetType,
-                                   ServerVersion serverVersion,
-                                   Object channel,
-                                   User user, Object player, Object byteBuf) throws PacketProcessException {
+    protected PacketLoginSendEvent(
+            int packetId, PacketTypeCommon packetType, ServerVersion serverVersion,
+            Object channel, User user,
+            @UnknownNullability Object player, Object byteBuf
+    ) throws PacketProcessException {
        super(packetId, packetType, serverVersion, channel, user, player, byteBuf);
    }

    @Override
    public PacketLoginSendEvent clone() {
-        try {
-            Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
-            return new PacketLoginSendEvent(getPacketId(), getPacketType(), getServerVersion(),
-                    getChannel(), getUser(), getPlayer(), clonedBuffer);
-        } catch (PacketProcessException e) {
-            e.printStackTrace();
-        }
-        return null;
+        Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
+        return new PacketLoginSendEvent(getPacketId(), getPacketType(), getServerVersion(),
+                getChannel(), getUser(), getPlayer(), clonedBuffer);
    }

    public PacketType.Login.Server getPacketType() {
@@ -25,31 +25,33 @@ import com.github.retrooper.packetevents.netty.buffer.ByteBufHelper;
 import com.github.retrooper.packetevents.protocol.packettype.PacketType;
 import com.github.retrooper.packetevents.protocol.packettype.PacketTypeCommon;
 import com.github.retrooper.packetevents.protocol.player.User;
+import org.jetbrains.annotations.UnknownNullability;
+import org.jspecify.annotations.NullMarked;

+@NullMarked
 public class PacketPlayReceiveEvent extends PacketReceiveEvent {
-    public PacketPlayReceiveEvent(Object channel, User user,
-                                  Object player, Object rawByteBuf,
-                                  boolean autoProtocolTranslation) throws PacketProcessException {
+
+    public PacketPlayReceiveEvent(
+            Object channel, User user,
+            @UnknownNullability Object player, Object rawByteBuf,
+            boolean autoProtocolTranslation
+    ) throws PacketProcessException {
        super(channel, user, player, rawByteBuf, autoProtocolTranslation);
    }

-    protected PacketPlayReceiveEvent(int packetId, PacketTypeCommon packetType,
-                                     ServerVersion serverVersion,
-                                     Object channel,
-                                     User user, Object player, Object byteBuf) throws PacketProcessException {
+    protected PacketPlayReceiveEvent(
+            int packetId, PacketTypeCommon packetType, ServerVersion serverVersion,
+            Object channel, User user,
+            @UnknownNullability Object player, Object byteBuf
+    ) throws PacketProcessException {
        super(packetId, packetType, serverVersion, channel, user, player, byteBuf);
    }

    @Override
    public PacketPlayReceiveEvent clone() {
-        try {
-            Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
-            return new PacketPlayReceiveEvent(getPacketId(), getPacketType(), getServerVersion(),
-                    getChannel(), getUser(), getPlayer(), clonedBuffer);
-        } catch (PacketProcessException e) {
-            e.printStackTrace();
-        }
-        return null;
+        Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
+        return new PacketPlayReceiveEvent(getPacketId(), getPacketType(), getServerVersion(),
+                getChannel(), getUser(), getPlayer(), clonedBuffer);
    }

    public PacketType.Play.Client getPacketType() {
@@ -25,31 +25,33 @@ import com.github.retrooper.packetevents.netty.buffer.ByteBufHelper;
 import com.github.retrooper.packetevents.protocol.packettype.PacketType;
 import com.github.retrooper.packetevents.protocol.packettype.PacketTypeCommon;
 import com.github.retrooper.packetevents.protocol.player.User;
+import org.jetbrains.annotations.UnknownNullability;
+import org.jspecify.annotations.NullMarked;

+@NullMarked
 public class PacketPlaySendEvent extends PacketSendEvent {
-    public PacketPlaySendEvent(Object channel, User user,
-                               Object player, Object rawByteBuf,
-                               boolean autoProtocolTranslation) throws PacketProcessException {
+
+    public PacketPlaySendEvent(
+            Object channel, User user,
+            @UnknownNullability Object player, Object rawByteBuf,
+            boolean autoProtocolTranslation
+    ) throws PacketProcessException {
        super(channel, user, player, rawByteBuf, autoProtocolTranslation);
    }

-    protected PacketPlaySendEvent(int packetId, PacketTypeCommon packetType,
-                                  ServerVersion serverVersion,
-                                  Object channel,
-                                  User user, Object player, Object byteBuf) throws PacketProcessException {
+    protected PacketPlaySendEvent(
+            int packetId, PacketTypeCommon packetType, ServerVersion serverVersion,
+            Object channel, User user,
+            @UnknownNullability Object player, Object byteBuf
+    ) throws PacketProcessException {
        super(packetId, packetType, serverVersion, channel, user, player, byteBuf);
    }

    @Override
    public PacketPlaySendEvent clone() {
-        try {
-            Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
-            return new PacketPlaySendEvent(getPacketId(), getPacketType(), getServerVersion(),
-                    getChannel(), getUser(), getPlayer(), clonedBuffer);
-        } catch (PacketProcessException e) {
-            e.printStackTrace();
-        }
-        return null;
+        Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
+        return new PacketPlaySendEvent(getPacketId(), getPacketType(), getServerVersion(),
+                getChannel(), getUser(), getPlayer(), clonedBuffer);
    }

    public PacketType.Play.Server getPacketType() {
@@ -25,31 +25,33 @@ import com.github.retrooper.packetevents.netty.buffer.ByteBufHelper;
 import com.github.retrooper.packetevents.protocol.packettype.PacketType;
 import com.github.retrooper.packetevents.protocol.packettype.PacketTypeCommon;
 import com.github.retrooper.packetevents.protocol.player.User;
+import org.jetbrains.annotations.UnknownNullability;
+import org.jspecify.annotations.NullMarked;

+@NullMarked
 public class PacketStatusReceiveEvent extends PacketReceiveEvent {
-    public PacketStatusReceiveEvent(Object channel, User user,
-                                    Object player, Object rawByteBuf,
-                                    boolean autoProtocolTranslation) throws PacketProcessException {
+
+    public PacketStatusReceiveEvent(
+            Object channel, User user,
+            @UnknownNullability Object player, Object rawByteBuf,
+            boolean autoProtocolTranslation
+    ) throws PacketProcessException {
        super(channel, user, player, rawByteBuf, autoProtocolTranslation);
    }

-    protected PacketStatusReceiveEvent(int packetId, PacketTypeCommon packetType,
-                                  ServerVersion serverVersion,
-                                  Object channel,
-                                  User user, Object player, Object byteBuf) throws PacketProcessException {
+    protected PacketStatusReceiveEvent(
+            int packetId, PacketTypeCommon packetType, ServerVersion serverVersion,
+            Object channel, User user,
+            @UnknownNullability Object player, Object byteBuf
+    ) throws PacketProcessException {
        super(packetId, packetType, serverVersion, channel, user, player, byteBuf);
    }

    @Override
    public PacketStatusReceiveEvent clone() {
-        try {
-            Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
-            return new PacketStatusReceiveEvent(getPacketId(), getPacketType(), getServerVersion(),
-                    getChannel(), getUser(), getPlayer(), clonedBuffer);
-        } catch (PacketProcessException e) {
-            e.printStackTrace();
-        }
-        return null;
+        Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
+        return new PacketStatusReceiveEvent(getPacketId(), getPacketType(), getServerVersion(),
+                getChannel(), getUser(), getPlayer(), clonedBuffer);
    }

    public PacketType.Status.Client getPacketType() {
@@ -25,30 +25,33 @@ import com.github.retrooper.packetevents.netty.buffer.ByteBufHelper;
 import com.github.retrooper.packetevents.protocol.packettype.PacketType;
 import com.github.retrooper.packetevents.protocol.packettype.PacketTypeCommon;
 import com.github.retrooper.packetevents.protocol.player.User;
+import org.jetbrains.annotations.UnknownNullability;
+import org.jspecify.annotations.NullMarked;

+@NullMarked
 public class PacketStatusSendEvent extends PacketSendEvent {
-    public PacketStatusSendEvent(Object channel, User user, Object player, Object rawByteBuf,
-                                 boolean autoProtocolTranslation) throws PacketProcessException {
+
+    public PacketStatusSendEvent(
+            Object channel, User user,
+            @UnknownNullability Object player, Object rawByteBuf,
+            boolean autoProtocolTranslation
+    ) throws PacketProcessException {
        super(channel, user, player, rawByteBuf, autoProtocolTranslation);
    }

-    protected PacketStatusSendEvent(int packetId, PacketTypeCommon packetType,
-                                    ServerVersion serverVersion,
-                                    Object channel,
-                                    User user, Object player, Object byteBuf) throws PacketProcessException {
+    protected PacketStatusSendEvent(
+            int packetId, PacketTypeCommon packetType, ServerVersion serverVersion,
+            Object channel, User user,
+            @UnknownNullability Object player, Object byteBuf
+    ) throws PacketProcessException {
        super(packetId, packetType, serverVersion, channel, user, player, byteBuf);
    }

    @Override
    public PacketStatusSendEvent clone() {
-        try {
-            Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
-            return new PacketStatusSendEvent(getPacketId(), getPacketType(), getServerVersion(),
-                    getChannel(), getUser(), getPlayer(), clonedBuffer);
-        } catch (PacketProcessException e) {
-            e.printStackTrace();
-        }
-        return null;
+        Object clonedBuffer = ByteBufHelper.retainedDuplicate(getByteBuf());
+        return new PacketStatusSendEvent(getPacketId(), getPacketType(), getServerVersion(),
+                getChannel(), getUser(), getPlayer(), clonedBuffer);
    }


@@ -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;
+    }
 }
@@ -18,9 +18,11 @@

 package com.github.retrooper.packetevents.injector;

+import com.github.retrooper.packetevents.protocol.PacketSide;
 import com.github.retrooper.packetevents.protocol.player.User;

 public interface ChannelInjector {
+
    default boolean isServerBound() {
        return true;
    }
@@ -32,4 +34,12 @@ public interface ChannelInjector {
    void updateUser(Object channel, User user);

    void setPlayer(Object channel, Object player);
+
+    boolean isPlayerSet(Object channel);
+
+    boolean isProxy();
+
+    default PacketSide getPacketSide() {
+        return PacketSide.SERVER;
+    }
 }
@@ -26,19 +26,21 @@ import com.github.retrooper.packetevents.event.PacketSendEvent;
 import com.github.retrooper.packetevents.manager.protocol.ProtocolManager;
 import com.github.retrooper.packetevents.manager.server.ServerVersion;
 import com.github.retrooper.packetevents.protocol.ConnectionState;
-import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
-import com.github.retrooper.packetevents.protocol.nbt.NBTList;
 import com.github.retrooper.packetevents.protocol.packettype.PacketType;
 import com.github.retrooper.packetevents.protocol.player.ClientVersion;
 import com.github.retrooper.packetevents.protocol.player.User;
 import com.github.retrooper.packetevents.protocol.player.UserProfile;
+import com.github.retrooper.packetevents.util.LogManager;
+import com.github.retrooper.packetevents.util.mappings.SynchronizedRegistriesHandler;
+import com.github.retrooper.packetevents.wrapper.configuration.server.WrapperConfigServerConfigurationEnd;
+import com.github.retrooper.packetevents.wrapper.configuration.server.WrapperConfigServerRegistryData;
 import com.github.retrooper.packetevents.wrapper.handshaking.client.WrapperHandshakingClientHandshake;
 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;

-import java.net.InetSocketAddress;
-
+@ApiStatus.Internal
 public class InternalPacketListener extends PacketListenerAbstract {

    public InternalPacketListener() {
@@ -66,48 +68,60 @@ public class InternalPacketListener extends PacketListenerAbstract {

            //Map username with channel
            synchronized (channel) {
-                ProtocolManager.CHANNELS.put(profile.getUUID(), channel);
+                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 PLAY, but the variable event.getConnectionState() remains LOGIN
-            //We switch user state immediately to remain in sync with vanilla, allowing you to send PLAY packets immediately
-            user.setConnectionState(ConnectionState.PLAY);
-            PacketEvents.getAPI().getLogManager().debug("Transitioned " + profile.getName() + " into the PLAY state!");
+            // 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
+            boolean proxy = PacketEvents.getAPI().getInjector().isProxy();
+            if (proxy ? event.getUser().getClientVersion().isNewerThanOrEquals(ClientVersion.V_1_20_2)
+                    : event.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_20_2)) {
+                user.setEncoderState(ConnectionState.CONFIGURATION);
+            } else {
+                user.setConnectionState(ConnectionState.PLAY);
+            }
        }

-        // Join game can be used to update world height, and sets dimension data
+        // The server sends dimension information in configuration phase, since 1.20.2
+        else if (event.getPacketType() == PacketType.Configuration.Server.REGISTRY_DATA) {
+            WrapperConfigServerRegistryData packet = new WrapperConfigServerRegistryData(event);

+            if (packet.getElements() != null) { // 1.20.2 to 1.20.5
+                SynchronizedRegistriesHandler.handleRegistry(user, packet,
+                        packet.getRegistryKey(), packet.getElements());
+            }
+            if (packet.getRegistryData() != null) { // since 1.20.5
+                SynchronizedRegistriesHandler.handleLegacyRegistries(user, packet, packet.getRegistryData());
+            }
+        }
+
+        // The server sends registry info in login packet for 1.16 to 1.20.1
        else if (event.getPacketType() == PacketType.Play.Server.JOIN_GAME) {
            WrapperPlayServerJoinGame joinGame = new WrapperPlayServerJoinGame(event);
            user.setEntityId(joinGame.getEntityId());
-            user.setDimension(joinGame.getDimension());
-            if (event.getServerVersion().isOlderThanOrEquals(ServerVersion.V_1_16_5)) {
-                return; // Fixed world height, no tags are sent to the client
+
+            if (joinGame.getDimensionCodec() != null) { // 1.16 to 1.20.1
+                SynchronizedRegistriesHandler.handleLegacyRegistries(user, joinGame,
+                        joinGame.getDimensionCodec());
+                user.finalizeRegistries(joinGame);
            }

-            // Store world height
-            NBTList<NBTCompound> list = joinGame.getDimensionCodec().getCompoundTagOrNull("minecraft:dimension_type").getCompoundListTagOrNull("value");
-            user.setWorldNBT(list);
-
-            // Update world height
-            NBTCompound worldNBT = user.getWorldNBT(joinGame.getDimension().getDimensionName()).getCompoundTagOrNull("element");
-            user.setMinWorldHeight(worldNBT.getNumberTagOrNull("min_y").getAsInt());
-            user.setTotalWorldHeight(worldNBT.getNumberTagOrNull("height").getAsInt());
+            user.setDimensionType(joinGame.getDimensionType());
        }

        // Respawn is used to switch dimensions
        else if (event.getPacketType() == PacketType.Play.Server.RESPAWN) {
-            WrapperPlayServerRespawn respawn = new WrapperPlayServerRespawn(event);
-            user.setDimension(respawn.getDimension());
-            if (event.getServerVersion().isOlderThanOrEquals(ServerVersion.V_1_16_5)) {
-                return; // Fixed world height, no tags are sent to the client
-            }
-
-            NBTCompound worldNBT = user.getWorldNBT(respawn.getDimension().getDimensionName()).getCompoundTagOrNull("element"); // This is 1.17+, it always sends the world name
-            user.setMinWorldHeight(worldNBT.getNumberTagOrNull("min_y").getAsInt());
-            user.setTotalWorldHeight(worldNBT.getNumberTagOrNull("height").getAsInt());
+            WrapperPlayServerRespawn packet = new WrapperPlayServerRespawn(event);
+            user.setDimensionType(packet.getDimensionType());
+        } else if (event.getPacketType() == PacketType.Play.Server.CONFIGURATION_START) {
+            user.setEncoderState(ConnectionState.CONFIGURATION);
+        } else if (event.getPacketType() == PacketType.Configuration.Server.CONFIGURATION_END) {
+            user.setEncoderState(ConnectionState.PLAY);
+            user.finalizeRegistries(new WrapperConfigServerConfigurationEnd(event));
        }
    }

@@ -115,17 +129,24 @@ public class InternalPacketListener extends PacketListenerAbstract {
    public void onPacketReceive(PacketReceiveEvent event) {
        User user = event.getUser();
        if (event.getPacketType() == PacketType.Handshaking.Client.HANDSHAKE) {
-            Object channel = event.getChannel();
-            InetSocketAddress address = event.getSocketAddress();
-            WrapperHandshakingClientHandshake handshake = new WrapperHandshakingClientHandshake(event);
-            ConnectionState nextState = handshake.getNextConnectionState();
-            ClientVersion clientVersion = handshake.getClientVersion();
-            //Update client version for this event call(and user)
+            WrapperHandshakingClientHandshake packet = new WrapperHandshakingClientHandshake(event);
+            ClientVersion clientVersion = packet.getClientVersion();
+            ConnectionState state = packet.getNextConnectionState();
+
+            LogManager logger = PacketEvents.getAPI().getLogManager();
+            if (logger.isDebug()) {
+                logger.debug("Processed handshake for " + event.getAddress() + ": "
+                        + state.name() + " / " + packet.getClientVersion().getReleaseName());
+            }
+
            user.setClientVersion(clientVersion);
-            PacketEvents.getAPI().getLogManager().debug("Processed " + address.getHostString() + ":" + address.getPort() + "'s client version. Client Version: " + clientVersion.getReleaseName());
-            //Transition into LOGIN or STATUS connection state immediately, to remain in sync with vanilla
-            user.setConnectionState(nextState);
-            PacketEvents.getAPI().getLogManager().debug("Transitioned " + address.getHostString() + ":" + address.getPort() + " into the " + nextState + " state!");
+            user.setConnectionState(state);
+        } else if (event.getPacketType() == PacketType.Login.Client.LOGIN_SUCCESS_ACK) {
+            user.setDecoderState(ConnectionState.CONFIGURATION);
+        } else if (event.getPacketType() == PacketType.Play.Client.CONFIGURATION_ACK) {
+            user.setDecoderState(ConnectionState.CONFIGURATION);
+        } else if (event.getPacketType() == PacketType.Configuration.Client.CONFIGURATION_END_ACK) {
+            user.setDecoderState(ConnectionState.PLAY);
        }
    }
-}
+}
@@ -19,10 +19,12 @@
 package com.github.retrooper.packetevents.manager.player;

 import com.github.retrooper.packetevents.PacketEvents;
+import com.github.retrooper.packetevents.event.ProtocolPacketEvent;
 import com.github.retrooper.packetevents.protocol.ConnectionState;
 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;

 public interface PlayerManager {
@@ -34,7 +36,17 @@ public interface PlayerManager {

    User getUser(@NotNull Object player);

-    default ConnectionState getConnectionState(@NotNull Object player) {
+    /**
+     * <strong>WARNING</strong>: Usage of this method should be avoided. Please use either
+     * {@link User#getDecoderState()} or {@link User#getEncoderState()}.<br>
+     * To access the specific state a packet event was sent/received in, use {@link ProtocolPacketEvent#getConnectionState()}.
+     * <p>
+     * Since 1.20.2, the Minecraft protocol allows the decoder/encoder connection states to de-sync.
+     *
+     * @throws IllegalStateException if encoder/decoder connection states do not match
+     */
+    @ApiStatus.Obsolete
+    default ConnectionState getConnectionState(@NotNull Object player) throws IllegalStateException {
        return getUser(player).getConnectionState();
    }

@@ -25,6 +25,7 @@ import com.github.retrooper.packetevents.protocol.player.ClientVersion;
 import com.github.retrooper.packetevents.protocol.player.User;
 import com.github.retrooper.packetevents.util.PacketTransformationUtil;
 import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import org.jetbrains.annotations.ApiStatus;

 import java.util.Collection;
 import java.util.Map;
@@ -32,8 +33,10 @@ import java.util.UUID;
 import java.util.concurrent.ConcurrentHashMap;

 public interface ProtocolManager {
+    @ApiStatus.Internal
    Map<UUID, Object> CHANNELS = new ConcurrentHashMap<>();
    // Use SocketAddress because ProtocolLib wraps Channels with NettyChannelProxy class
+    @ApiStatus.Internal
    Map<Object, User> USERS = new ConcurrentHashMap<>();

    default Collection<User> getUsers() {
@@ -96,47 +99,51 @@ public interface ProtocolManager {
        getUser(channel).setClientVersion(version);
    }

-    default Object[] transformWrappers(PacketWrapper<?> wrapper, Object channel) {
+    @ApiStatus.Internal
+    default Object[] transformWrappers(PacketWrapper<?> wrapper, Object channel, boolean outgoing) {
        //It is possible that our packet transformer util decides to transform one wrapper into multiple packets.
        //(Correcting some mistakes on your end)
        PacketWrapper<?>[] wrappers = PacketTransformationUtil.transform(wrapper);
        Object[] buffers = new Object[wrappers.length];
        for (int i = 0; i < wrappers.length; i++) {
-            wrappers[i].prepareForSend(channel);
-            buffers[i] = wrappers[i].buffer;
-            // Fix race condition when sending packets to multiple people (due to when the buffer is freed)
-            wrappers[i].buffer = null;
+            PacketWrapper<?> wrappper = wrappers[i];
+            synchronized (wrappper.bufferLock) {
+                wrappper.prepareForSend(channel, outgoing);
+                buffers[i] = wrappper.buffer;
+                // Fix race condition when sending packets to multiple people (due to when the buffer is freed)
+                wrappper.buffer = null;
+            }
        }
        return buffers;
    }

    default void sendPacket(Object channel, PacketWrapper<?> wrapper) {
-        Object[] transformed = transformWrappers(wrapper, channel);
+        Object[] transformed = transformWrappers(wrapper, channel, true);
        sendPackets(channel, transformed);
    }

    default void sendPacketSilently(Object channel, PacketWrapper<?> wrapper) {
-        Object[] transformed = transformWrappers(wrapper, channel);
+        Object[] transformed = transformWrappers(wrapper, channel, true);
        sendPacketsSilently(channel, transformed);
    }

    default void writePacket(Object channel, PacketWrapper<?> wrapper) {
-        Object[] transformed = transformWrappers(wrapper, channel);
+        Object[] transformed = transformWrappers(wrapper, channel, true);
        writePackets(channel, transformed);
    }

    default void writePacketSilently(Object channel, PacketWrapper<?> wrapper) {
-        Object[] transformed = transformWrappers(wrapper, channel);
+        Object[] transformed = transformWrappers(wrapper, channel, true);
        writePacketsSilently(channel, transformed);
    }

    default void receivePacket(Object channel, PacketWrapper<?> wrapper) {
-        Object[] transformed = transformWrappers(wrapper, channel);
+        Object[] transformed = transformWrappers(wrapper, channel, false);
        receivePackets(channel, transformed);
    }

    default void receivePacketSilently(Object channel, PacketWrapper<?> wrapper) {
-        Object[] transformed = transformWrappers(wrapper, channel);
+        Object[] transformed = transformWrappers(wrapper, channel, false);
        receivePacketsSilently(channel, transformed);
    }

@@ -145,11 +152,13 @@ public interface ProtocolManager {
        return USERS.get(pipeline);
    }

+    @ApiStatus.Internal
    default User removeUser(Object channel) {
        Object pipeline = ChannelHelper.getPipeline(channel);
        return USERS.remove(pipeline);
    }

+    @ApiStatus.Internal
    default void setUser(Object channel, User user) {
        synchronized (channel) {
            Object pipeline = ChannelHelper.getPipeline(channel);
@@ -161,4 +170,23 @@ public interface ProtocolManager {
    default Object getChannel(UUID uuid) {
        return CHANNELS.get(uuid);
    }
+
+    @ApiStatus.Internal
+    default void setChannel(UUID uuid, Object channel) {
+        CHANNELS.put(uuid, channel);
+    }
+
+    @ApiStatus.Internal
+    default void removeChannel(Object channel) {
+        CHANNELS.values().remove(channel);
+    }
+
+    @ApiStatus.Internal
+    default void removeChannelById(UUID uuid) {
+        CHANNELS.remove(uuid);
+    }
+
+    default boolean hasChannel(Object channel) {
+        return CHANNELS.containsValue(channel);
+    }
 }
@@ -18,6 +18,10 @@

 package com.github.retrooper.packetevents.manager.server;

+import com.github.retrooper.packetevents.protocol.player.ClientVersion;
+import com.github.retrooper.packetevents.protocol.player.User;
+import org.jetbrains.annotations.Nullable;
+
 public interface ServerManager {
    /**
     * Get the server version.
@@ -34,4 +38,20 @@ public interface ServerManager {
    default SystemOS getOS() {
        return SystemOS.getOS();
    }
+
+    /**
+     * Gets a platform-specific network-synchronized-registries cache key.
+     * <p>
+     * This tells packetevents, if a registry should be cached or read again. On
+     * backend servers with global registries, this may be a constant value. On
+     * proxy servers with per-server registries, this may be a value which depends
+     * on the current server the {@link User} is on.
+     *
+     * @param user    the {@link User} for which the registry gets read
+     * @param version the version the packet is for
+     * @return some value or null for no caching at all
+     */
+    default @Nullable Object getRegistryCacheKey(User user, ClientVersion version) {
+        return null; // no caching
+    }
 }
@@ -32,9 +32,10 @@ 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_2(109), V_1_9_4(110),
+    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
    V_1_10(210), V_1_10_1(210), V_1_10_2(210),
    V_1_11(315), V_1_11_2(316),
@@ -47,8 +48,10 @@ public enum ServerVersion {
    V_1_18(757), V_1_18_1(757), V_1_18_2(758),
    //1.19.1 and 1.19.2 have the same protocol version
    V_1_19(759), V_1_19_1(760), V_1_19_2(760), V_1_19_3(761), V_1_19_4(762),
-    //1.20 and 1.20.1 have the same protocol version
-    V_1_20(763), V_1_20_1(763),
+    //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. 1.21.7 and 1.21.8 have the same protocol version. 1.21.9 and 1.21.10 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_6(771), V_1_21_7(772), V_1_21_8(772), V_1_21_9(773), V_1_21_10(773), V_1_21_11(774),
    //TODO UPDATE Add server version constant
    ERROR(-1, true);

@@ -18,6 +18,8 @@

 package com.github.retrooper.packetevents.manager.server;

+import java.util.Locale;
+
 /**
 * System Operating system.
 *
@@ -36,9 +38,9 @@ public enum SystemOS {
     * @return Operating System.
     */
    public static SystemOS getOSNoCache() {
-        final String os = System.getProperty("os.name").toLowerCase();
+        final String os = System.getProperty("os.name").toLowerCase(Locale.ROOT);
        for (SystemOS sysos : values()) {
-            if (os.contains(sysos.name().toLowerCase())) {
+            if (os.contains(sysos.name().toLowerCase(Locale.ROOT))) {
                return sysos;
            }
        }
@@ -24,8 +24,13 @@ public interface ByteBufAllocationOperator {
    Object copiedBuffer(byte[] bytes);

    Object buffer();
+    Object buffer(int initialCapacity);

    Object directBuffer();
+    Object directBuffer(int initialCapacity);

    Object compositeBuffer();
+    Object compositeBuffer(int maxNumComponents);
+
+    Object emptyBuffer();
 }
@@ -103,6 +103,18 @@ public class ByteBufHelper {
        PacketEvents.getAPI().getNettyManager().getByteBufOperator().writeShort(buffer, value);
    }

+    public static void writeShortLE(Object buffer, int value) {
+        PacketEvents.getAPI().getNettyManager().getByteBufOperator().writeShortLE(buffer, value);
+    }
+
+    public static int readMedium(Object buffer) {
+        return PacketEvents.getAPI().getNettyManager().getByteBufOperator().readMedium(buffer);
+    }
+
+    public static void writeMedium(Object buffer, int value) {
+        PacketEvents.getAPI().getNettyManager().getByteBufOperator().writeMedium(buffer, value);
+    }
+
    public static int readInt(Object buffer) {
        return PacketEvents.getAPI().getNettyManager().getByteBufOperator().readInt(buffer);
    }
@@ -231,6 +243,19 @@ public class ByteBufHelper {
        return PacketEvents.getAPI().getNettyManager().getByteBufOperator().resetWriterIndex(buffer);
    }

+    public static Object allocateNewBuffer(Object buffer) {
+        return PacketEvents.getAPI().getNettyManager().getByteBufOperator().allocateNewBuffer(buffer);
+    }
+
+    public static int getByteSize(int value) {
+        for (int i = 1; i < 5; ++i) {
+            if ((value & -1 << i * 7) == 0) {
+                return i;
+            }
+        }
+        return 5;
+    }
+
    public static int readVarInt(Object buffer) {
        int value = 0;
        int length = 0;
@@ -18,6 +18,8 @@

 package com.github.retrooper.packetevents.netty.buffer;

+import com.github.retrooper.packetevents.exception.PacketProcessException;
+
 import java.io.*;
 //TODO give netty credit
 public class ByteBufInputStream extends InputStream implements DataInput {
@@ -40,27 +42,27 @@ public class ByteBufInputStream extends InputStream implements DataInput {
        this(buffer, ByteBufHelper.readableBytes(buffer), releaseOnClose);
    }

-    public ByteBufInputStream(Object buffer, int length, boolean releaseOnClose) {
+    public ByteBufInputStream(Object buffer, int maxLength, boolean releaseOnClose) {
        this.lineBuf = new StringBuilder();
        if (buffer == null) {
            throw new NullPointerException("buffer");
-        } else if (length < 0) {
+        } else if (maxLength < 0) {
            if (releaseOnClose) {
                ByteBufHelper.release(buffer);
            }

-            throw new IllegalArgumentException("length: " + length);
-        } else if (length > ByteBufHelper.readableBytes(buffer)) {
+            throw new IllegalArgumentException("maxLength: " + maxLength);
+        } else if (ByteBufHelper.readableBytes(buffer) > maxLength) {
            if (releaseOnClose) {
                ByteBufHelper.release(buffer);
            }

-            throw new IndexOutOfBoundsException("Too many bytes to be read - Needs " + length + ", maximum is " + ByteBufHelper.readableBytes(buffer));
+            throw new IndexOutOfBoundsException("Too many bytes to be read - Found " + ByteBufHelper.readableBytes(buffer) + ", maximum is " + maxLength);
        } else {
            this.releaseOnClose = releaseOnClose;
            this.buffer = buffer;
            this.startIndex = ByteBufHelper.readerIndex(buffer);
-            this.endIndex = this.startIndex + length;
+            this.endIndex = this.startIndex + ByteBufHelper.readableBytes(buffer);
            ByteBufHelper.markReaderIndex(buffer);
        }
    }
@@ -204,7 +206,8 @@ public class ByteBufInputStream extends InputStream implements DataInput {
    }

    public String readUTF() throws IOException {
-        return DataInputStream.readUTF(this);
+        String text = DataInputStream.readUTF(this);
+        return text;
    }

    public int readUnsignedByte() throws IOException {
@@ -225,7 +228,14 @@ public class ByteBufInputStream extends InputStream implements DataInput {
        if (fieldSize < 0) {
            throw new IndexOutOfBoundsException("fieldSize cannot be a negative number");
        } else if (fieldSize > this.available()) {
-            throw new EOFException("fieldSize is too long! Length is " + fieldSize + ", but maximum is " + this.available());
+            int value = this.available();
+            String msg = "fieldSize is too long! Length is " + fieldSize + ", but maximum is " + value;
+            if (value == 0) {
+                throw new PacketProcessException(msg);
+            }
+            else {
+                throw new EOFException(msg);
+            }
        }
    }
 }
@@ -35,12 +35,15 @@ public interface ByteBufOperator {

    byte readByte(Object buffer);
    short readShort(Object buffer);
+    int readMedium(Object buffer);
    int readInt(Object buffer);
    long readUnsignedInt(Object buffer);
    long readLong(Object buffer);

    void writeByte(Object buffer, int value);
    void writeShort(Object buffer, int value);
+    void writeShortLE(Object buffer, int value);
+    void writeMedium(Object buffer, int value);
    void writeInt(Object buffer, int value);
    void writeLong(Object buffer, long value);

@@ -72,6 +75,8 @@ public interface ByteBufOperator {
    Object markWriterIndex(Object buffer);
    Object resetWriterIndex(Object buffer);

+    Object allocateNewBuffer(Object buffer);
+
    default float readFloat(Object buffer) {
        return Float.intBitsToFloat(readInt(buffer));
    }
@@ -40,4 +40,20 @@ public class UnpooledByteBufAllocationHelper {
    public static Object compositeBuffer() {
        return PacketEvents.getAPI().getNettyManager().getByteBufAllocationOperator().compositeBuffer();
    }
+
+    public static Object buffer(int initialCapacity) {
+        return PacketEvents.getAPI().getNettyManager().getByteBufAllocationOperator().buffer(initialCapacity);
+    }
+
+    public static Object directBuffer(int initialCapacity) {
+        return PacketEvents.getAPI().getNettyManager().getByteBufAllocationOperator().directBuffer(initialCapacity);
+    }
+
+    public static Object compositeBuffer(int maxNumComponents) {
+        return PacketEvents.getAPI().getNettyManager().getByteBufAllocationOperator().compositeBuffer(maxNumComponents);
+    }
+
+    public static Object emptyBuffer() {
+        return PacketEvents.getAPI().getNettyManager().getByteBufAllocationOperator().emptyBuffer();
+    }
 }
@@ -23,7 +23,7 @@ package com.github.retrooper.packetevents.protocol;
 * @since 1.8
 */
 public enum ConnectionState {
-    HANDSHAKING, STATUS, LOGIN, PLAY;
+    HANDSHAKING, STATUS, LOGIN, PLAY, CONFIGURATION;

    public static ConnectionState getById(int id) {
        if (id >= values().length || id < 0) {
@@ -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;
+    }
+}
@@ -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;
+    }
+}
@@ -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;
+    }
+}
@@ -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;
+        }
+    }
+}
@@ -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,
+    ;
+}
@@ -0,0 +1,52 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2023 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.PacketEvents;
+import com.github.retrooper.packetevents.protocol.mapper.MappedEntity;
+import com.github.retrooper.packetevents.protocol.player.ClientVersion;
+import com.github.retrooper.packetevents.resources.ResourceLocation;
+import com.github.retrooper.packetevents.util.MathUtil;
+
+public interface Attribute extends MappedEntity {
+
+    @Override
+    default ResourceLocation getName() {
+        return this.getName(PacketEvents.getAPI().getServerManager().getVersion().toClientVersion());
+    }
+
+    ResourceLocation getName(ClientVersion version);
+
+    default double sanitizeValue(double value) {
+        return this.sanitizeValue(value, PacketEvents.getAPI().getServerManager().getVersion().toClientVersion());
+    }
+
+    default double sanitizeValue(double value, ClientVersion version) {
+        if (!Double.isNaN(value)) {
+            return MathUtil.clamp(value, this.getMinValue(), this.getMaxValue());
+        }
+        return this.getMinValue();
+    }
+
+    double getDefaultValue();
+
+    double getMinValue();
+
+    double getMaxValue();
+}
@@ -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();
+}
@@ -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);
+}
@@ -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();
+    }
+}
@@ -0,0 +1,25 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2024 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;
+
+public enum AttributeOperation {
+    ADDITION,
+    MULTIPLY_BASE,
+    MULTIPLY_TOTAL,
+}
@@ -0,0 +1,372 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2023 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.player.ClientVersion;
+import com.github.retrooper.packetevents.resources.ResourceLocation;
+import com.github.retrooper.packetevents.util.mappings.VersionedRegistry;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+
+public final class Attributes {
+
+    private static final VersionedRegistry<Attribute> REGISTRY = new VersionedRegistry<>("attribute");
+
+    private Attributes() {
+    }
+
+    private static Attribute define(
+            String key, @Nullable String legacyPrefix,
+            double def, double min, double max
+    ) {
+        return REGISTRY.define(key, data ->
+                new StaticAttribute(data, legacyPrefix, def, min, max));
+    }
+
+    public static VersionedRegistry<Attribute> getRegistry() {
+        return REGISTRY;
+    }
+
+    public static Attribute getByName(String name) {
+        // "remapping" to support < 1.21.2
+        String normedName = ResourceLocation.normString(name);
+        if (normedName.startsWith(ResourceLocation.VANILLA_NAMESPACE + ":generic.")
+                || normedName.startsWith(ResourceLocation.VANILLA_NAMESPACE + ":player.")
+                || normedName.startsWith(ResourceLocation.VANILLA_NAMESPACE + ":zombie.")) {
+            normedName = normedName.substring(normedName.indexOf('.') + 1);
+        }
+        return REGISTRY.getByName(normedName);
+    }
+
+    public static Attribute getById(ClientVersion version, int id) {
+        return REGISTRY.getById(version, id);
+    }
+
+    public static final Attribute ARMOR = define("armor",
+            "generic", 0d, 0d, 30d);
+    public static final Attribute ARMOR_TOUGHNESS = define("armor_toughness",
+            "generic", 0d, 0d, 20d);
+    public static final Attribute ATTACK_DAMAGE = define("attack_damage",
+            "generic", 2d, 0d, 2048d);
+    public static final Attribute ATTACK_KNOCKBACK = define("attack_knockback",
+            "generic", 0d, 0d, 5d);
+    public static final Attribute ATTACK_SPEED = define("attack_speed",
+            "generic", 4d, 0d, 1024d);
+    public static final Attribute FLYING_SPEED = define("flying_speed",
+            "generic", 0.4d, 0d, 1024d);
+    public static final Attribute FOLLOW_RANGE = define("follow_range",
+            "generic", 32d, 0d, 2048d);
+    public static final Attribute KNOCKBACK_RESISTANCE = define("knockback_resistance",
+            "generic", 0d, 0d, 1d);
+    public static final Attribute LUCK = define("luck",
+            "generic", 0d, -1024d, 1024d);
+    public static final Attribute MAX_HEALTH = define("max_health",
+            "generic", 20d, 1d, 1024d);
+    public static final Attribute MOVEMENT_SPEED = define("movement_speed",
+            "generic", 0.7d, 0d, 1024d);
+    public static final Attribute SPAWN_REINFORCEMENTS = define("spawn_reinforcements",
+            "zombie", 0d, 0d, 1d);
+
+    /**
+     * Added with 1.20.2
+     */
+    public static final Attribute MAX_ABSORPTION = define("max_absorption",
+            "generic", 0d, 0d, 2048d);
+
+    /**
+     * Added with 1.20.5
+     */
+    public static final Attribute BLOCK_BREAK_SPEED = define("block_break_speed",
+            "player", 1d, 0d, 1024d);
+    /**
+     * Added with 1.20.5
+     */
+    public static final Attribute BLOCK_INTERACTION_RANGE = define("block_interaction_range",
+            "player", 4.5d, 0d, 64d);
+    /**
+     * Added with 1.20.5
+     */
+    public static final Attribute ENTITY_INTERACTION_RANGE = define("entity_interaction_range",
+            "player", 3d, 0d, 64d);
+    /**
+     * Added with 1.20.5
+     */
+    public static final Attribute FALL_DAMAGE_MULTIPLIER = define("fall_damage_multiplier",
+            "generic", 1d, 0d, 100d);
+    /**
+     * Added with 1.20.5
+     */
+    public static final Attribute GRAVITY = define("gravity",
+            "generic", 0.08d, -1d, 1d);
+    /**
+     * Added with 1.20.5
+     */
+    public static final Attribute JUMP_STRENGTH = define("jump_strength",
+            "generic", 0.42d, 0d, 32d);
+    /**
+     * Added with 1.20.5
+     */
+    public static final Attribute SAFE_FALL_DISTANCE = define("safe_fall_distance",
+            "generic", 3d, 0d, 1024d);
+    /**
+     * Added with 1.20.5
+     */
+    public static final Attribute SCALE = define("scale",
+            "generic", 1d, 1d / 16d, 16d);
+    /**
+     * Added with 1.20.5
+     */
+    public static final Attribute STEP_HEIGHT = define("step_height",
+            "generic", 0.6d, 0d, 10d);
+
+    /**
+     * Added with 1.21
+     */
+    public static final Attribute BURNING_TIME = define("burning_time",
+            "generic", 0d, 1d, 1024d);
+    /**
+     * Added with 1.21
+     */
+    public static final Attribute EXPLOSION_KNOCKBACK_RESISTANCE = define("explosion_knockback_resistance",
+            "generic", 0d, 0d, 1d);
+    /**
+     * Added with 1.21
+     */
+    public static final Attribute MINING_EFFICIENCY = define("mining_efficiency",
+            "player", 0d, 0d, 1024d);
+    /**
+     * Added with 1.21
+     */
+    public static final Attribute MOVEMENT_EFFICIENCY = define("movement_efficiency",
+            "generic", 0d, 0d, 1d);
+    /**
+     * Added with 1.21
+     */
+    public static final Attribute OXYGEN_BONUS = define("oxygen_bonus",
+            "generic", 0d, 0d, 1024d);
+    /**
+     * Added with 1.21
+     */
+    public static final Attribute SNEAKING_SPEED = define("sneaking_speed",
+            "player", 0.3d, 0d, 1d);
+    /**
+     * Added with 1.21
+     */
+    public static final Attribute SUBMERGED_MINING_SPEED = define("submerged_mining_speed",
+            "player", 0.2d, 0d, 20d);
+    /**
+     * Added with 1.21
+     */
+    public static final Attribute SWEEPING_DAMAGE_RATIO = define("sweeping_damage_ratio",
+            "player", 0d, 0d, 1d);
+    /**
+     * Added with 1.21
+     */
+    public static final Attribute WATER_MOVEMENT_EFFICIENCY = define("water_movement_efficiency",
+            "generic", 0d, 0d, 1d);
+
+    /**
+     * Added with 1.21.2
+     */
+    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}
+     */
+    @ApiStatus.Obsolete
+    public static final Attribute HORSE_JUMP_STRENGTH = define("horse.jump_strength",
+            null, 0.7d, 0d, 2d);
+
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_ARMOR = ARMOR;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_ARMOR_TOUGHNESS = ARMOR_TOUGHNESS;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_ATTACK_DAMAGE = ATTACK_DAMAGE;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_ATTACK_KNOCKBACK = ATTACK_KNOCKBACK;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_ATTACK_SPEED = ATTACK_SPEED;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_FLYING_SPEED = FLYING_SPEED;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_FOLLOW_RANGE = FOLLOW_RANGE;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_KNOCKBACK_RESISTANCE = KNOCKBACK_RESISTANCE;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_LUCK = LUCK;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_MAX_HEALTH = MAX_HEALTH;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_MOVEMENT_SPEED = MOVEMENT_SPEED;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute ZOMBIE_SPAWN_REINFORCEMENTS = SPAWN_REINFORCEMENTS;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_MAX_ABSORPTION = MAX_ABSORPTION;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute PLAYER_BLOCK_BREAK_SPEED = BLOCK_BREAK_SPEED;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute PLAYER_BLOCK_INTERACTION_RANGE = BLOCK_INTERACTION_RANGE;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute PLAYER_ENTITY_INTERACTION_RANGE = ENTITY_INTERACTION_RANGE;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_FALL_DAMAGE_MULTIPLIER = FALL_DAMAGE_MULTIPLIER;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_GRAVITY = GRAVITY;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_JUMP_STRENGTH = JUMP_STRENGTH;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_SAFE_FALL_DISTANCE = SAFE_FALL_DISTANCE;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_SCALE = SCALE;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_STEP_HEIGHT = STEP_HEIGHT;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_BURNING_TIME = BURNING_TIME;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_EXPLOSION_KNOCKBACK_RESISTANCE = EXPLOSION_KNOCKBACK_RESISTANCE;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute PLAYER_MINING_EFFICIENCY = MINING_EFFICIENCY;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_MOVEMENT_EFFICIENCY = MOVEMENT_EFFICIENCY;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_OXYGEN_BONUS = OXYGEN_BONUS;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute PLAYER_SNEAKING_SPEED = SNEAKING_SPEED;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute PLAYER_SUBMERGED_MINING_SPEED = SUBMERGED_MINING_SPEED;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute PLAYER_SWEEPING_DAMAGE_RATIO = SWEEPING_DAMAGE_RATIO;
+    /**
+     * All attribute "type" prefixes were removed with 1.21.2
+     */
+    @Deprecated
+    public static final Attribute GENERIC_WATER_MOVEMENT_EFFICIENCY = WATER_MOVEMENT_EFFICIENCY;
+
+    static {
+        REGISTRY.unloadMappings();
+    }
+}
@@ -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;
+    }
+}
@@ -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;
+    }
+}
@@ -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);
+    }
+}
@@ -0,0 +1,71 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2024 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.protocol.player.ClientVersion;
+import com.github.retrooper.packetevents.resources.ResourceLocation;
+import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+
+public class StaticAttribute extends AbstractMappedEntity implements Attribute {
+
+    private final @Nullable ResourceLocation legacyName;
+    private final double defaultValue;
+    private final double minValue;
+    private final double maxValue;
+
+    @ApiStatus.Internal
+    public StaticAttribute(
+            @Nullable TypesBuilderData data, String legacyPrefix,
+            double defaultValue, double minValue, double maxValue
+    ) {
+        super(data);
+        this.defaultValue = defaultValue;
+        this.minValue = minValue;
+        this.maxValue = maxValue;
+        this.legacyName = legacyPrefix == null || data == null ? null : new ResourceLocation(
+                data.getName().getNamespace(), legacyPrefix + "." + data.getName().getKey());
+    }
+
+    @Override
+    public ResourceLocation getName(ClientVersion version) {
+        if (this.data == null) {
+            throw new UnsupportedOperationException();
+        }
+        return version.isNewerThanOrEquals(ClientVersion.V_1_21_2) || this.legacyName == null
+                ? this.data.getName() : this.legacyName;
+    }
+
+    @Override
+    public double getDefaultValue() {
+        return this.defaultValue;
+    }
+
+    @Override
+    public double getMinValue() {
+        return this.minValue;
+    }
+
+    @Override
+    public double getMaxValue() {
+        return this.maxValue;
+    }
+}
@@ -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);
+    }
+}
@@ -18,8 +18,152 @@

 package com.github.retrooper.packetevents.protocol.chat;

+import com.github.retrooper.packetevents.protocol.chat.message.ChatMessage_v1_19_1;
+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.protocol.player.ClientVersion;
+import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.util.Index;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.UnknownNullability;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;

-public interface ChatType extends MappedEntity {
+import java.util.Objects;

+import static com.github.retrooper.packetevents.util.adventure.AdventureIndexUtil.indexValueOrThrow;
+
+@NullMarked
+public interface ChatType extends MappedEntity, CopyableEntity<ChatType>, DeepComparableEntity {
+
+    @UnknownNullability("only nullable for 1.19")
+    ChatTypeDecoration getChatDecoration();
+
+    @ApiStatus.Obsolete(since = "1.19.1")
+    @Nullable ChatTypeDecoration getOverlayDecoration();
+
+    @UnknownNullability("only nullable for 1.19")
+    ChatTypeDecoration getNarrationDecoration();
+
+    @ApiStatus.Obsolete(since = "1.19.1")
+    @Nullable NarrationPriority getNarrationPriority();
+
+    static ChatType readDirect(PacketWrapper<?> wrapper) {
+        ChatTypeDecoration chatDecoration = ChatTypeDecoration.read(wrapper);
+        ChatTypeDecoration narrationDecoration = ChatTypeDecoration.read(wrapper);
+        return new StaticChatType(chatDecoration, narrationDecoration);
+    }
+
+    static void writeDirect(PacketWrapper<?> wrapper, ChatType chatType) {
+        ChatTypeDecoration.write(wrapper, chatType.getChatDecoration());
+        ChatTypeDecoration.write(wrapper, chatType.getNarrationDecoration());
+    }
+
+    static ChatType decode(NBT nbt, ClientVersion version, @Nullable TypesBuilderData data) {
+        // everything is nullable in 1.19, even the chat format!
+        NBTCompound compound = (NBTCompound) nbt;
+        NBTCompound chatTag = compound.getCompoundTagOrNull("chat");
+        NBTCompound narrationTag = compound.getCompoundTagOrNull("narration");
+
+        ChatTypeDecoration overlay = null;
+        NarrationPriority narrationPriority = null;
+        if (version.isOlderThan(ClientVersion.V_1_19_1)) {
+            NBTCompound overlayTag = compound.getCompoundTagOrNull("overlay");
+            if (overlayTag != null) {
+                // why is this nullable? why is this wrapped? There is no reason to wrap this...
+                overlayTag = overlayTag.getCompoundTagOrNull("description");
+                if (overlayTag != null) {
+                    overlay = ChatTypeDecoration.decode(overlayTag, version);
+                }
+            }
+            if (chatTag != null) {
+                chatTag = chatTag.getCompoundTagOrNull("description");
+            }
+            if (narrationTag != null) {
+                // the priority is the ONLY value which isn't nullable!
+                narrationPriority = indexValueOrThrow(NarrationPriority.ID_INDEX,
+                        narrationTag.getStringTagValueOrThrow("priority"));
+                narrationTag = narrationTag.getCompoundTagOrNull("description");
+            }
+        } else {
+            // ensure this isn't null in everything but 1.19
+            Objects.requireNonNull(chatTag, "NBT chat does not exist");
+            Objects.requireNonNull(narrationTag, "NBT narration does not exist");
+        }
+
+        ChatTypeDecoration chat = chatTag == null ? null : ChatTypeDecoration.decode(chatTag, version);
+        ChatTypeDecoration narration = narrationTag == null ? null : ChatTypeDecoration.decode(narrationTag, version);
+        return new StaticChatType(data, chat, overlay, narration, narrationPriority);
+    }
+
+    static NBT encode(ChatType chatType, ClientVersion version) {
+        NBTCompound compound = new NBTCompound();
+        NBT chatTag = chatType.getChatDecoration() == null ? null :
+                ChatTypeDecoration.encode(chatType.getChatDecoration(), version);
+        NBT narrationTag = chatType.getNarrationDecoration() == null ? null :
+                ChatTypeDecoration.encode(chatType.getNarrationDecoration(), version);
+
+        if (version.isOlderThan(ClientVersion.V_1_19_1)) {
+            ChatTypeDecoration overlayDeco = chatType.getOverlayDecoration();
+            if (overlayDeco != null) {
+                NBTCompound overlayCompound = new NBTCompound();
+                overlayCompound.setTag("description",
+                        ChatTypeDecoration.encode(overlayDeco, version));
+                compound.setTag("overlay", overlayCompound);
+            }
+            if (narrationTag != null) {
+                NBTCompound narrationCompound = new NBTCompound();
+                narrationCompound.setTag("description", narrationTag);
+                if (chatType.getNarrationPriority() != null) {
+                    narrationCompound.setTag("priority", new NBTString(chatType.getNarrationPriority().getId()));
+                }
+                narrationTag = narrationCompound;
+            }
+            if (chatTag != null) {
+                NBTCompound chatCompound = new NBTCompound();
+                chatCompound.setTag("description", chatTag);
+                chatTag = chatCompound;
+            }
+        }
+
+        if (chatTag != null) {
+            compound.setTag("chat", chatTag);
+        }
+        if (narrationTag != null) {
+            compound.setTag("narration", narrationTag);
+        }
+        return compound;
+    }
+
+    class Bound extends ChatMessage_v1_19_1.ChatTypeBoundNetwork {
+        public Bound(ChatType type, Component name, @Nullable Component targetName) {
+            super(type, name, targetName);
+        }
+    }
+
+    @ApiStatus.Obsolete(since = "1.19.1")
+    enum NarrationPriority {
+
+        CHAT("chat"),
+        SYSTEM("system");
+
+        public static final Index<String, NarrationPriority> ID_INDEX = Index.create(
+                NarrationPriority.class, NarrationPriority::getId);
+
+        private final String id;
+
+        NarrationPriority(String id) {
+            this.id = id;
+        }
+
+        public String getId() {
+            return this.id;
+        }
+    }
 }
@@ -0,0 +1,205 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2024 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;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBT;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
+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.util.adventure.AdventureSerializer;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.ComponentLike;
+import net.kyori.adventure.text.format.Style;
+import net.kyori.adventure.util.Index;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+import java.util.function.BiFunction;
+
+import static com.github.retrooper.packetevents.protocol.chat.ChatTypeDecoration.Parameter.CONTENT;
+import static com.github.retrooper.packetevents.protocol.chat.ChatTypeDecoration.Parameter.SENDER;
+import static com.github.retrooper.packetevents.protocol.chat.ChatTypeDecoration.Parameter.TARGET;
+import static com.github.retrooper.packetevents.util.adventure.AdventureIndexUtil.indexValueOrThrow;
+import static java.util.Arrays.asList;
+import static net.kyori.adventure.text.format.NamedTextColor.GRAY;
+import static net.kyori.adventure.text.format.Style.empty;
+import static net.kyori.adventure.text.format.Style.style;
+import static net.kyori.adventure.text.format.TextDecoration.ITALIC;
+
+public class ChatTypeDecoration {
+
+    private final String translationKey;
+    private final List<Parameter> parameters;
+    private final Style style;
+
+    public ChatTypeDecoration(String translationKey, List<Parameter> parameters, Style style) {
+        this.translationKey = translationKey;
+        this.parameters = Collections.unmodifiableList(new ArrayList<>(parameters));
+        this.style = style;
+    }
+
+    public static ChatTypeDecoration read(PacketWrapper<?> wrapper) {
+        String translationKey = wrapper.readString();
+        List<Parameter> parameters = wrapper.readList(ew -> ew.readEnum(Parameter.values()));
+        Style style = wrapper.readStyle();
+        return new ChatTypeDecoration(translationKey, parameters, style);
+    }
+
+    public static void write(PacketWrapper<?> wrapper, ChatTypeDecoration decoration) {
+        wrapper.writeString(decoration.translationKey);
+        wrapper.writeList(decoration.parameters, PacketWrapper::writeEnum);
+        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");
+        List<Parameter> params;
+        if (paramsTag instanceof NBTList<?>) {
+            params = new ArrayList<>();
+            NBTList<?> paramsTagList = (NBTList<?>) paramsTag;
+            for (NBT paramTag : paramsTagList.getTags()) {
+                String paramId = ((NBTString) paramTag).getValue();
+                params.add(indexValueOrThrow(Parameter.ID_INDEX, paramId));
+            }
+        } else {
+            String paramId = ((NBTString) paramsTag).getValue();
+            params = Collections.singletonList(indexValueOrThrow(Parameter.ID_INDEX, paramId));
+        }
+        NBTCompound styleTag = compound.getCompoundTagOrNull("style");
+        Style style = styleTag == null ? empty() :
+                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()));
+        }
+
+        NBTCompound compound = new NBTCompound();
+        compound.setTag("translation_key", new NBTString(decoration.translationKey));
+        compound.setTag("parameters", paramsTag);
+        if (!decoration.style.isEmpty()) {
+            compound.setTag("style", wrapper.getSerializers()
+                    .nbt().serializeStyle(decoration.style, wrapper));
+        }
+        return compound;
+    }
+
+    public static ChatTypeDecoration withSender(String translationKey) {
+        return new ChatTypeDecoration(translationKey, asList(SENDER, CONTENT), empty());
+    }
+
+    public static ChatTypeDecoration incomingDirectMessage(String translationKey) {
+        return new ChatTypeDecoration(translationKey, asList(SENDER, CONTENT),
+                style(GRAY, ITALIC));
+    }
+
+    public static ChatTypeDecoration outgoingDirectMessage(String translationKey) {
+        return new ChatTypeDecoration(translationKey, asList(TARGET, CONTENT),
+                style(GRAY, ITALIC));
+    }
+
+    public static ChatTypeDecoration teamMessage(String translationKey) {
+        return new ChatTypeDecoration(translationKey, asList(TARGET, SENDER, CONTENT), empty());
+    }
+
+    public Component decorate(Component component, ChatType.Bound chatType) {
+        ComponentLike[] components = new ComponentLike[this.parameters.size()];
+        for (int i = 0; i < components.length; i++) {
+            Parameter parameter = this.parameters.get(i);
+            components[i] = parameter.selector.apply(component, chatType);
+        }
+        return Component.translatable(this.translationKey, null, this.style, components);
+    }
+
+    public String getTranslationKey() {
+        return this.translationKey;
+    }
+
+    public List<Parameter> getParameters() {
+        return this.parameters;
+    }
+
+    public Style getStyle() {
+        return this.style;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) return true;
+        if (!(obj instanceof ChatTypeDecoration)) return false;
+        ChatTypeDecoration that = (ChatTypeDecoration) obj;
+        if (!this.translationKey.equals(that.translationKey)) return false;
+        if (!this.parameters.equals(that.parameters)) return false;
+        return this.style.equals(that.style);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(this.translationKey, this.parameters, this.style);
+    }
+
+    public enum Parameter {
+
+        SENDER("sender", (component, type) -> type.getName()),
+        TARGET("target", (component, type) -> type.getTargetName() != null
+                ? type.getTargetName() : Component.empty()),
+        CONTENT("content", (component, type) -> component);
+
+        public static final Index<String, Parameter> ID_INDEX = Index.create(
+                Parameter.class, Parameter::getId);
+
+        private final String id;
+        private final BiFunction<Component, ChatType.Bound, Component> selector;
+
+        Parameter(String id, BiFunction<Component, ChatType.Bound, Component> selector) {
+            this.id = id;
+            this.selector = selector;
+        }
+
+        public String getId() {
+            return this.id;
+        }
+
+        @Deprecated
+        public static @Nullable Parameter valueByName(String id) {
+            return ID_INDEX.value(id);
+        }
+    }
+}
+
@@ -19,68 +19,67 @@
 package com.github.retrooper.packetevents.protocol.chat;

 import com.github.retrooper.packetevents.protocol.player.ClientVersion;
-import com.github.retrooper.packetevents.resources.ResourceLocation;
-import com.github.retrooper.packetevents.util.TypesBuilder;
-import com.github.retrooper.packetevents.util.TypesBuilderData;
+import com.github.retrooper.packetevents.util.mappings.VersionedRegistry;
+import org.jetbrains.annotations.ApiStatus;

-import java.util.HashMap;
-import java.util.Map;
+import java.util.Collection;

-public class ChatTypes {
-    private static final Map<String, ChatType> CHAT_TYPE_MAP = new HashMap<>();
-    //Key - mappings version, value - map with chat type ids and chat types
-    private static final Map<Byte, Map<Integer, ChatType>> CHAT_TYPE_ID_MAP = new HashMap<>();
-    private static final TypesBuilder TYPES_BUILDER = new TypesBuilder("chat/chat_type_mappings",
-            ClientVersion.V_1_18_2,
-            ClientVersion.V_1_19,
-            ClientVersion.V_1_19_1);
+import static com.github.retrooper.packetevents.protocol.chat.ChatTypeDecoration.incomingDirectMessage;
+import static com.github.retrooper.packetevents.protocol.chat.ChatTypeDecoration.outgoingDirectMessage;
+import static com.github.retrooper.packetevents.protocol.chat.ChatTypeDecoration.teamMessage;
+import static com.github.retrooper.packetevents.protocol.chat.ChatTypeDecoration.withSender;

-    static {
-        TYPES_BUILDER.unloadFileMappings();
+public final class ChatTypes {
+
+    private static final VersionedRegistry<ChatType> REGISTRY = new VersionedRegistry<>("chat_type");
+
+    private ChatTypes() {
    }

+    @ApiStatus.Internal
    public static ChatType define(String key) {
-        TypesBuilderData data = TYPES_BUILDER.define(key);
-        ChatType chatType = new ChatType() {
-            private final int[] ids = data.getData();
-
-            @Override
-            public ResourceLocation getName() {
-                return data.getName();
-            }
-
-            @Override
-            public int getId(ClientVersion version) {
-                int index = TYPES_BUILDER.getDataIndex(version);
-                return ids[index];
-            }
-        };
-        CHAT_TYPE_MAP.put(chatType.getName().toString(), chatType);
-        for (ClientVersion version : TYPES_BUILDER.getVersions()) {
-            int index = TYPES_BUILDER.getDataIndex(version);
-            Map<Integer, ChatType> typeIdMap = CHAT_TYPE_ID_MAP.computeIfAbsent((byte) index, k -> new HashMap<>());
-            typeIdMap.put(chatType.getId(version), chatType);
-        }
-        return chatType;
+        return define(key, withSender("chat.type.text"));
+    }
+
+    @ApiStatus.Internal
+    public static ChatType define(String key, ChatTypeDecoration chatDeco) {
+        return define(key, chatDeco, withSender("chat.type.text.narrate"));
+    }
+
+    @ApiStatus.Internal
+    public static ChatType define(String key, ChatTypeDecoration chatDeco, ChatTypeDecoration narrationDeco) {
+        return REGISTRY.define(key, data ->
+                new StaticChatType(data, chatDeco, narrationDeco));
+    }
+
+    public static VersionedRegistry<ChatType> getRegistry() {
+        return REGISTRY;
    }

-    //with minecraft:key
    public static ChatType getByName(String name) {
-        return CHAT_TYPE_MAP.get(name);
+        return REGISTRY.getByName(name);
    }

    public static ChatType getById(ClientVersion version, int id) {
-        int index = TYPES_BUILDER.getDataIndex(version);
-        return CHAT_TYPE_ID_MAP.get((byte) index).get(id);
+        return REGISTRY.getById(version, id);
    }

    public static final ChatType CHAT = define("chat");
-    public static final ChatType SAY_COMMAND = define("say_command");
-    public static final ChatType MSG_COMMAND_INCOMING = define("msg_command_incoming");
-    public static final ChatType MSG_COMMAND_OUTGOING = define("msg_command_outgoing");
-    public static final ChatType TEAM_MSG_COMMAND_INCOMING = define("team_msg_command_incoming");
-    public static final ChatType TEAM_MSG_COMMAND_OUTGOING = define("team_msg_command_outgoing");
-    public static final ChatType EMOTE_COMMAND = define("emote_command");
+    public static final ChatType SAY_COMMAND = define("say_command",
+            withSender("chat.type.announcement"));
+    public static final ChatType MSG_COMMAND_INCOMING = define("msg_command_incoming",
+            incomingDirectMessage("commands.message.display.incoming"));
+    public static final ChatType MSG_COMMAND_OUTGOING = define("msg_command_outgoing",
+            outgoingDirectMessage("commands.message.display.outgoing"));
+    public static final ChatType TEAM_MSG_COMMAND_INCOMING = define("team_msg_command_incoming",
+            teamMessage("chat.type.team.text"));
+    public static final ChatType TEAM_MSG_COMMAND_OUTGOING = define("team_msg_command_outgoing",
+            teamMessage("chat.type.team.sent"));
+    public static final ChatType EMOTE_COMMAND = define("emote_command",
+            withSender("chat.type.emote"),
+            withSender("chat.type.emote"));
+
+    // added by CraftBukkit for a few versions
    public static final ChatType RAW = define("raw");

    @Deprecated
@@ -91,4 +90,17 @@ public class ChatTypes {
    public static final ChatType MSG_COMMAND = define("msg_command");
    @Deprecated
    public static final ChatType TEAM_MSG_COMMAND = define("team_msg_command");
+
+    /**
+     * Returns an immutable view of the chat types.
+     *
+     * @return Chat Types
+     */
+    public static Collection<ChatType> values() {
+        return REGISTRY.getEntries();
+    }
+
+    static {
+        REGISTRY.unloadMappings();
+    }
 }
@@ -1,5 +1,6 @@
 package com.github.retrooper.packetevents.protocol.chat;

+import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.Nullable;

 import java.io.DataOutput;
@@ -86,12 +87,23 @@ public class LastSeenMessages {
    }

    public static class Update {
+
        private final int offset;
        private final BitSet acknowledged;
+        private final byte checksum;

+        /**
+         * Checksum has been added with 1.21.5
+         */
+        @ApiStatus.Obsolete
        public Update(int offset, BitSet acknowledged) {
+            this(offset, acknowledged, (byte) 0);
+        }
+
+        public Update(int offset, BitSet acknowledged, byte checksum) {
            this.offset = offset;
            this.acknowledged = acknowledged;
+            this.checksum = checksum;
        }

        public int getOffset() {
@@ -101,5 +113,12 @@ public class LastSeenMessages {
        public BitSet getAcknowledged() {
            return acknowledged;
        }
+
+        /**
+         * Added with 1.21.5
+         */
+        public byte getChecksum() {
+            return this.checksum;
+        }
    }
 }
@@ -16,9 +16,10 @@
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

-
 package com.github.retrooper.packetevents.protocol.chat;

+import com.github.retrooper.packetevents.PacketEvents;
+import com.github.retrooper.packetevents.protocol.chat.Parsers.Parser;
 import com.github.retrooper.packetevents.resources.ResourceLocation;
 import org.jetbrains.annotations.Nullable;

@@ -26,20 +27,47 @@ import java.util.List;
 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 Optional<Integer> redirectNodeIndex;
+    private int redirectNodeIndex;
    private Optional<String> name;
-    private Optional<Integer> parserID;
+    private Optional<Parser> parser;
    private Optional<List<Object>> properties;
    private Optional<ResourceLocation> suggestionsType;

-    public Node(byte flags, List<Integer> children, @Nullable Integer redirectNodeIndex, @Nullable String name, @Nullable Integer parserID, @Nullable List<Object> properties, @Nullable ResourceLocation suggestionsType) {
+    public Node(
+            byte flags, List<Integer> children, int redirectNodeIndex, @Nullable String name,
+            @Nullable Integer parserID, @Nullable List<Object> properties, @Nullable ResourceLocation suggestionsType
+    ) {
+        this(flags, children, redirectNodeIndex, name, parserID == null ? null : Parsers.getById(
+                        PacketEvents.getAPI().getServerManager().getVersion().toClientVersion(), parserID),
+                properties, suggestionsType);
+    }
+
+    public Node(
+            byte flags, List<Integer> children, int redirectNodeIndex, @Nullable String name, @Nullable Parser parser,
+            @Nullable List<Object> properties, @Nullable ResourceLocation suggestionsType
+    ) {
        this.flags = flags;
        this.children = children;
-        this.redirectNodeIndex = Optional.ofNullable(redirectNodeIndex);
+        this.redirectNodeIndex = redirectNodeIndex;
        this.name = Optional.ofNullable(name);
-        this.parserID = Optional.ofNullable(parserID);
+        this.parser = Optional.ofNullable(parser);
        this.properties = Optional.ofNullable(properties);
        this.suggestionsType = Optional.ofNullable(suggestionsType);
    }
@@ -60,11 +88,11 @@ public class Node {
        this.children = children;
    }

-    public Optional<Integer> getRedirectNodeIndex() {
+    public int getRedirectNodeIndex() {
        return redirectNodeIndex;
    }

-    public void setRedirectNodeIndex(Optional<Integer> redirectNodeIndex) {
+    public void setRedirectNodeIndex(int redirectNodeIndex) {
        this.redirectNodeIndex = redirectNodeIndex;
    }

@@ -76,12 +104,22 @@ public class Node {
        this.name = name;
    }

+    public Optional<Parser> getParser() {
+        return this.parser;
+    }
+
+    public void setParser(Optional<Parser> parser) {
+        this.parser = parser;
+    }
+
    public Optional<Integer> getParserID() {
-        return parserID;
+        return this.parser.map(parser -> parser.getId(PacketEvents.getAPI()
+                .getServerManager().getVersion().toClientVersion()));
    }

    public void setParserID(Optional<Integer> parserID) {
-        this.parserID = parserID;
+        this.parser = parserID.map(id -> Parsers.getById(PacketEvents.getAPI()
+                .getServerManager().getVersion().toClientVersion(), id));
    }

    public Optional<List<Object>> getProperties() {
@@ -1,6 +1,6 @@
 /*
 * This file is part of packetevents - https://github.com/retrooper/packetevents
- * Copyright (C) 2022 retrooper and contributors
+ * Copyright (C) 2024 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
@@ -16,13 +16,20 @@
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

-
 package com.github.retrooper.packetevents.protocol.chat;

+import com.github.retrooper.packetevents.manager.server.ServerVersion;
+import com.github.retrooper.packetevents.protocol.mapper.AbstractMappedEntity;
+import com.github.retrooper.packetevents.protocol.player.ClientVersion;
 import com.github.retrooper.packetevents.resources.ResourceLocation;
+import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+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;
 import java.util.Collections;
 import java.util.List;
@@ -30,156 +37,240 @@ import java.util.Optional;
 import java.util.function.BiConsumer;
 import java.util.function.Function;

-public class Parsers {
-    private static final List<Parser> parsers = Arrays.asList(
-            new Parser("brigadier:bool", null, null),
-            new Parser("brigadier:float",
-                    packetWrapper -> {
-                        byte flags = packetWrapper.readByte();
-                        float min = (flags & 0x01) != 0 ? packetWrapper.readFloat() : -Float.MAX_VALUE;
-                        float max = (flags & 0x02) != 0 ? packetWrapper.readFloat() : Float.MAX_VALUE;
-                        return Arrays.asList(flags, min, max);
-                    },
-                    (packetWrapper, properties) -> {
-                        byte flags = (byte) properties.get(0);
-                        packetWrapper.writeByte(flags);
-                        if ((flags & 0x01) != 0) packetWrapper.writeFloat((float) properties.get(1));
-                        if ((flags & 0x02) != 0) packetWrapper.writeFloat((float) properties.get(2));
-                    }
-            ),
-            new Parser("brigadier:double",
-                    packetWrapper -> {
-                        byte flags = packetWrapper.readByte();
-                        double min = (flags & 0x01) != 0 ? packetWrapper.readDouble() : -Double.MAX_VALUE;
-                        double max = (flags & 0x02) != 0 ? packetWrapper.readDouble() : Double.MAX_VALUE;
-                        return Arrays.asList(flags, min, max);
-                    },
-                    (packetWrapper, properties) -> {
-                        byte flags = (byte) properties.get(0);
-                        packetWrapper.writeByte(flags);
-                        if ((flags & 0x01) != 0) packetWrapper.writeDouble((double) properties.get(1));
-                        if ((flags & 0x02) != 0) packetWrapper.writeDouble((double) properties.get(2));
-                    }
-            ),
-            new Parser("brigadier:integer",
-                    packetWrapper -> {
-                        byte flags = packetWrapper.readByte();
-                        int min = (flags & 0x01) != 0 ? packetWrapper.readInt() : Integer.MIN_VALUE;
-                        int max = (flags & 0x02) != 0 ? packetWrapper.readInt() : Integer.MAX_VALUE;
-                        return Arrays.asList(flags, min, max);
-                    },
-                    (packetWrapper, properties) -> {
-                        byte flags = (byte) properties.get(0);
-                        packetWrapper.writeByte(flags);
-                        if ((flags & 0x01) != 0) packetWrapper.writeInt((int) properties.get(1));
-                        if ((flags & 0x02) != 0) packetWrapper.writeInt((int) properties.get(2));
-                    }
-            ),
-            new Parser("brigadier:long",
-                    packetWrapper -> {
-                        byte flags = packetWrapper.readByte();
-                        long min = (flags & 0x01) != 0 ? packetWrapper.readLong() : Long.MIN_VALUE;
-                        long max = (flags & 0x02) != 0 ? packetWrapper.readLong() : Long.MAX_VALUE;
-                        return Arrays.asList(flags, min, max);
-                    },
-                    (packetWrapper, properties) -> {
-                        byte flags = (byte) properties.get(0);
-                        packetWrapper.writeByte(flags);
-                        if ((flags & 0x01) != 0) packetWrapper.writeLong((long) properties.get(1));
-                        if ((flags & 0x02) != 0) packetWrapper.writeLong((long) properties.get(2));
-                    }
-            ),
-            new Parser("brigadier:string",
-                    packetWrapper -> Collections.singletonList(packetWrapper.readVarInt()),
-                    (packetWrapper, properties) -> packetWrapper.writeVarInt((Integer) properties.get(0))
-            ),
-            new Parser("brigadier:entity",
-                    packetWrapper -> Collections.singletonList(packetWrapper.readByte()),
-                    (packetWrapper, properties) -> packetWrapper.writeByte(((Byte) properties.get(0)).intValue())
-            ),
-            new Parser("brigadier:game_profile", null, null),
-            new Parser("brigadier:block_pos", null, null),
-            new Parser("brigadier:column_pos", null, null),
-            new Parser("brigadier:vec3", null, null),
-            new Parser("brigadier:vec2", null, null),
-            new Parser("brigadier:block_state", null, null),
-            new Parser("brigadier:block_predicate", null, null),
-            new Parser("brigadier:item_stack", null, null),
-            new Parser("brigadier:item_predicate", null, null),
-            new Parser("brigadier:color", null, null),
-            new Parser("brigadier:component", null, null),
-            new Parser("brigadier:message", null, null),
-            new Parser("brigadier:nbt", null, null),
-            new Parser("brigadier:nbt_tag", null, null),
-            new Parser("brigadier:nbt_path", null, null),
-            new Parser("brigadier:objective", null, null),
-            new Parser("brigadier:objective_criteria", null, null),
-            new Parser("brigadier:operation", null, null),
-            new Parser("brigadier:particle", null, null),
-            new Parser("brigadier:angle", null, null),
-            new Parser("brigadier:rotation", null, null),
-            new Parser("brigadier:scoreboard_slot", null, null),
-            new Parser("brigadier:score_holder",
-                    packetWrapper -> Collections.singletonList(packetWrapper.readByte()),
-                    (packetWrapper, properties) -> packetWrapper.writeByte(((Byte) properties.get(0)).intValue())
-            ),
-            new Parser("brigadier:swizzle", null, null),
-            new Parser("brigadier:team", null, null),
-            new Parser("brigadier:item_slot", null, null),
-            new Parser("brigadier:resource_location", null, null),
-            new Parser("brigadier:function", null, null),
-            new Parser("brigadier:entity_anchor", null, null),
-            new Parser("brigadier:int_range", null, null),
-            new Parser("brigadier:float_range", null, null),
-            new Parser("brigadier:dimension", null, null),
-            new Parser("brigadier:gamemode", null, null),
-            new Parser("brigadier:time",
-                    packetWrapper -> Collections.singletonList(packetWrapper.readInt()),
-                    (packetWrapper, properties) -> packetWrapper.writeInt((int) properties.get(0))
-            ),
-            new Parser("brigadier:resource_or_tag",
-                    packetWrapper -> Collections.singletonList(packetWrapper.readIdentifier()),
-                    (packetWrapper, properties) -> packetWrapper.writeIdentifier((ResourceLocation) properties.get(0))
-            ),
-            new Parser("brigadier:resource_or_tag_key",
-                    packetWrapper -> Collections.singletonList(packetWrapper.readIdentifier()),
-                    (packetWrapper, properties) -> packetWrapper.writeIdentifier((ResourceLocation) properties.get(0))
-            ),
-            new Parser("brigadier:resource",
-                    packetWrapper -> Collections.singletonList(packetWrapper.readIdentifier()),
-                    (packetWrapper, properties) -> packetWrapper.writeIdentifier((ResourceLocation) properties.get(0))
-            ),
-            new Parser("brigadier:resource_key",
-                    packetWrapper -> Collections.singletonList(packetWrapper.readIdentifier()),
-                    (packetWrapper, properties) -> packetWrapper.writeIdentifier((ResourceLocation) properties.get(0))
-            ),
-            new Parser("brigadier:template_mirror", null, null),
-            new Parser("brigadier:template_rotation", null, null),
-            new Parser("brigadier:heightmap", null, null),
-            new Parser("brigadier:uuid", null, null)
-    );
+@NullMarked
+public final class Parsers {

-    public static List<Parser> getParsers() {
-        return parsers;
+    private static final VersionedRegistry<Parser> REGISTRY = new VersionedRegistry<>("command_argument_type");
+
+    private Parsers() {
    }

-    public static final class Parser {
-        private final String name; //not really needed, just for toString or something
-        private final Optional<Function<PacketWrapper<?>, List<Object>>> read;
-        private final Optional<BiConsumer<PacketWrapper<?>, List<Object>>> write;
+    @ApiStatus.Internal
+    public static Parser define(String key) {
+        return define(key, null, null);
+    }

+    @ApiStatus.Internal
+    public static Parser define(String key, @Nullable Reader reader, @Nullable Writer writer) {
+        return REGISTRY.define(key, data -> new Parser(data, reader, writer));
+    }
+
+    public static Parser getByName(String name) {
+        return REGISTRY.getByName(name);
+    }
+
+    public static Parser getById(ClientVersion version, int id) {
+        return REGISTRY.getById(version, id);
+    }
+
+    public static List<Parser> getParsers() {
+        return new ArrayList<>(REGISTRY.getEntries());
+    }
+
+    public static VersionedRegistry<Parser> getRegistry() {
+        return REGISTRY;
+    }
+
+    public static final Parser BRIGADIER_BOOL = define("brigadier:bool", null, null);
+    public static final Parser BRIGADIER_FLOAT = define("brigadier:float",
+            packetWrapper -> {
+                byte flags = packetWrapper.readByte();
+                float min = (flags & 0x01) != 0 ? packetWrapper.readFloat() : -Float.MAX_VALUE;
+                float max = (flags & 0x02) != 0 ? packetWrapper.readFloat() : Float.MAX_VALUE;
+                return Arrays.asList(flags, min, max);
+            },
+            (packetWrapper, properties) -> {
+                byte flags = (byte) properties.get(0);
+                packetWrapper.writeByte(flags);
+                if ((flags & 0x01) != 0) packetWrapper.writeFloat((float) properties.get(1));
+                if ((flags & 0x02) != 0) packetWrapper.writeFloat((float) properties.get(2));
+            }
+    );
+    public static final Parser BRIGADIER_DOUBLE = define("brigadier:double",
+            packetWrapper -> {
+                byte flags = packetWrapper.readByte();
+                double min = (flags & 0x01) != 0 ? packetWrapper.readDouble() : -Double.MAX_VALUE;
+                double max = (flags & 0x02) != 0 ? packetWrapper.readDouble() : Double.MAX_VALUE;
+                return Arrays.asList(flags, min, max);
+            },
+            (packetWrapper, properties) -> {
+                byte flags = (byte) properties.get(0);
+                packetWrapper.writeByte(flags);
+                if ((flags & 0x01) != 0) packetWrapper.writeDouble((double) properties.get(1));
+                if ((flags & 0x02) != 0) packetWrapper.writeDouble((double) properties.get(2));
+            }
+    );
+    public static final Parser BRIGADIER_INTEGER = define("brigadier:integer",
+            packetWrapper -> {
+                byte flags = packetWrapper.readByte();
+                int min = (flags & 0x01) != 0 ? packetWrapper.readInt() : Integer.MIN_VALUE;
+                int max = (flags & 0x02) != 0 ? packetWrapper.readInt() : Integer.MAX_VALUE;
+                return Arrays.asList(flags, min, max);
+            },
+            (packetWrapper, properties) -> {
+                byte flags = (byte) properties.get(0);
+                packetWrapper.writeByte(flags);
+                if ((flags & 0x01) != 0) packetWrapper.writeInt((int) properties.get(1));
+                if ((flags & 0x02) != 0) packetWrapper.writeInt((int) properties.get(2));
+            }
+    );
+    public static final Parser BRIGADIER_LONG = define("brigadier:long",
+            packetWrapper -> {
+                byte flags = packetWrapper.readByte();
+                long min = (flags & 0x01) != 0 ? packetWrapper.readLong() : Long.MIN_VALUE;
+                long max = (flags & 0x02) != 0 ? packetWrapper.readLong() : Long.MAX_VALUE;
+                return Arrays.asList(flags, min, max);
+            },
+            (packetWrapper, properties) -> {
+                byte flags = (byte) properties.get(0);
+                packetWrapper.writeByte(flags);
+                if ((flags & 0x01) != 0) packetWrapper.writeLong((long) properties.get(1));
+                if ((flags & 0x02) != 0) packetWrapper.writeLong((long) properties.get(2));
+            }
+    );
+    public static final Parser BRIGADIER_STRING = define("brigadier:string",
+            packetWrapper -> Collections.singletonList(packetWrapper.readVarInt()),
+            (packetWrapper, properties) -> packetWrapper.writeVarInt((Integer) properties.get(0))
+    );
+    public static final Parser ENTITY = define("entity",
+            packetWrapper -> Collections.singletonList(packetWrapper.readByte()),
+            (packetWrapper, properties) -> packetWrapper.writeByte(((Byte) properties.get(0)).intValue())
+    );
+    public static final Parser GAME_PROFILE = define("game_profile", null, null);
+    public static final Parser BLOCK_POS = define("block_pos", null, null);
+    public static final Parser COLUMN_POS = define("column_pos", null, null);
+    public static final Parser VEC3 = define("vec3", null, null);
+    public static final Parser VEC2 = define("vec2", null, null);
+    public static final Parser BLOCK_STATE = define("block_state", null, null);
+    public static final Parser BLOCK_PREDICATE = define("block_predicate", null, null);
+    public static final Parser ITEM_STACK = define("item_stack", null, null);
+    public static final Parser ITEM_PREDICATE = define("item_predicate", null, null);
+    public static final Parser COLOR = define("color", null, null);
+    public static final Parser COMPONENT = define("component", null, null);
+    public static final Parser STYLE = define("style", null, null);
+    public static final Parser MESSAGE = define("message", null, null);
+    public static final Parser NBT_COMPOUND_TAG = define("nbt_compound_tag", null, null);
+    @ApiStatus.Obsolete
+    public static final Parser NBT = define("nbt", null, null);
+    public static final Parser NBT_TAG = define("nbt_tag", null, null);
+    public static final Parser NBT_PATH = define("nbt_path", null, null);
+    public static final Parser OBJECTIVE = define("objective", null, null);
+    public static final Parser OBJECTIVE_CRITERIA = define("objective_criteria", null, null);
+    public static final Parser OPERATION = define("operation", null, null);
+    public static final Parser PARTICLE = define("particle", null, null);
+    public static final Parser ANGLE = define("angle", null, null);
+    public static final Parser ROTATION = define("rotation", null, null);
+    public static final Parser SCOREBOARD_SLOT = define("scoreboard_slot", null, null);
+    public static final Parser SCORE_HOLDER = define("score_holder",
+            packetWrapper -> Collections.singletonList(packetWrapper.readByte()),
+            (packetWrapper, properties) -> packetWrapper.writeByte(((Byte) properties.get(0)).intValue())
+    );
+    public static final Parser SWIZZLE = define("swizzle", null, null);
+    public static final Parser TEAM = define("team", null, null);
+    public static final Parser ITEM_SLOT = define("item_slot", null, null);
+    public static final Parser ITEM_SLOTS = define("item_slots", null, null);
+    public static final Parser RESOURCE_LOCATION = define("resource_location", null, null);
+    public static final Parser MOB_EFFECT = define("mob_effect", null, null);
+    public static final Parser FUNCTION = define("function", null, null);
+    public static final Parser ENTITY_ANCHOR = define("entity_anchor", null, null);
+    public static final Parser INT_RANGE = define("int_range", null, null);
+    public static final Parser FLOAT_RANGE = define("float_range", null, null);
+    public static final Parser ITEM_ENCHANTMENT = define("item_enchantment", null, null);
+    public static final Parser ENTITY_SUMMON = define("entity_summon", null, null);
+    public static final Parser DIMENSION = define("dimension", null, null);
+    public static final Parser GAMEMODE = define("gamemode", null, null);
+    public static final Parser TIME = define("time",
+            wrapper -> Collections.singletonList(wrapper.getServerVersion()
+                    .isNewerThanOrEquals(ServerVersion.V_1_19_4) ? wrapper.readInt() : 0),
+            (wrapper, properties) -> {
+                if (wrapper.getServerVersion().isNewerThanOrEquals(ServerVersion.V_1_19_4)) {
+                    wrapper.writeInt((int) properties.get(0));
+                }
+            }
+    );
+    public static final Parser RESOURCE_OR_TAG = define("resource_or_tag",
+            packetWrapper -> Collections.singletonList(packetWrapper.readIdentifier()),
+            (packetWrapper, properties) -> packetWrapper.writeIdentifier((ResourceLocation) properties.get(0))
+    );
+    public static final Parser RESOURCE_OR_TAG_KEY = define("resource_or_tag_key",
+            packetWrapper -> Collections.singletonList(packetWrapper.readIdentifier()),
+            (packetWrapper, properties) -> packetWrapper.writeIdentifier((ResourceLocation) properties.get(0))
+    );
+    public static final Parser RESOURCE = define("resource",
+            packetWrapper -> Collections.singletonList(packetWrapper.readIdentifier()),
+            (packetWrapper, properties) -> packetWrapper.writeIdentifier((ResourceLocation) properties.get(0))
+    );
+    public static final Parser RESOURCE_KEY = define("resource_key",
+            packetWrapper -> Collections.singletonList(packetWrapper.readIdentifier()),
+            (packetWrapper, properties) -> packetWrapper.writeIdentifier((ResourceLocation) properties.get(0))
+    );
+    public static final Parser TEMPLATE_MIRROR = define("template_mirror", null, null);
+    public static final Parser TEMPLATE_ROTATION = define("template_rotation", null, null);
+    public static final Parser HEIGHTMAP = define("heightmap", null, null);
+    public static final Parser LOOT_TABLE = define("loot_table", null, null);
+    public static final Parser LOOT_PREDICATE = define("loot_predicate", null, null);
+    public static final Parser LOOT_MODIFIER = define("loot_modifier", null, null);
+    public static final Parser UUID = define("uuid", null, null);
+
+    /**
+     * Added with 1.21.5
+     */
+    public static final Parser RESOURCE_SELECTOR = define("resource_selector",
+            wrapper -> Collections.singletonList(wrapper.readIdentifier()),
+            (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();
+    }
+
+    @FunctionalInterface
+    public interface Reader extends Function<PacketWrapper<?>, List<Object>> {}
+
+    @FunctionalInterface
+    public interface Writer extends BiConsumer<PacketWrapper<?>, List<Object>> {}
+
+    public static final class Parser extends AbstractMappedEntity {
+
+        private final Reader reader;
+        private final Writer writer;
+
+        @Deprecated
        public Parser(String name, @Nullable Function<PacketWrapper<?>, List<Object>> read, @Nullable BiConsumer<PacketWrapper<?>, List<Object>> write) {
-            this.name = name;
-            this.read = Optional.ofNullable(read);
-            this.write = Optional.ofNullable(write);
+            this(
+                    new TypesBuilderData(new ResourceLocation(name), new int[0]),
+                    read == null ? null : read::apply,
+                    write == null ? null : write::accept
+            );
        }

-        public Optional<List<Object>> readProperties(PacketWrapper<?> packetWrapper) {
-            return read.map(fn -> fn.apply(packetWrapper));
+        @ApiStatus.Internal
+        public Parser(@Nullable TypesBuilderData data, @Nullable Reader reader, @Nullable Writer writer) {
+            super(data);
+            this.reader = reader;
+            this.writer = writer;
        }

-        public void writeProperties(PacketWrapper<?> packetWrapper, List<Object> properties) {
-            write.ifPresent(fn -> fn.accept(packetWrapper, properties));
+        public Optional<List<Object>> readProperties(PacketWrapper<?> wrapper) {
+            if (this.reader != null) {
+                return Optional.of(this.reader.apply(wrapper));
+            }
+            return Optional.empty();
+        }
+
+        public void writeProperties(PacketWrapper<?> wrapper, List<Object> properties) {
+            if (this.writer != null) {
+                this.writer.accept(wrapper, properties);
+            }
        }
    }
 }
@@ -2,9 +2,9 @@ package com.github.retrooper.packetevents.protocol.chat;

 public class SignedCommandArgument {
    private String argument;
-    private byte[] signature;
+    private MessageSignature signature;

-    public SignedCommandArgument(String argument, byte[] signature) {
+    public SignedCommandArgument(String argument, MessageSignature signature) {
        this.argument = argument;
        this.signature = signature;
    }
@@ -17,11 +17,11 @@ public class SignedCommandArgument {
        this.argument = argument;
    }

-    public byte[] getSignature() {
+    public MessageSignature getSignature() {
        return signature;
    }

-    public void setSignature(byte[] signature) {
+    public void setSignature(MessageSignature signature) {
        this.signature = signature;
    }
 }
@@ -0,0 +1,124 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2024 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;
+
+import com.github.retrooper.packetevents.protocol.mapper.AbstractMappedEntity;
+import com.github.retrooper.packetevents.util.mappings.TypesBuilderData;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.UnknownNullability;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+import java.util.Objects;
+
+@NullMarked
+public class StaticChatType extends AbstractMappedEntity implements ChatType {
+
+    private final @UnknownNullability("only nullable for 1.19") ChatTypeDecoration chatDecoration;
+    private final @Nullable ChatTypeDecoration overlayDecoration;
+    private final @UnknownNullability("only nullable for 1.19") ChatTypeDecoration narrationDecoration;
+    private final @Nullable NarrationPriority narrationPriority;
+
+    public StaticChatType(
+            ChatTypeDecoration chatDecoration,
+            ChatTypeDecoration narrationDecoration
+    ) {
+        this(null, chatDecoration, null, narrationDecoration, null);
+    }
+
+    @ApiStatus.Internal
+    public StaticChatType(
+            @Nullable TypesBuilderData data,
+            ChatTypeDecoration chatDecoration,
+            ChatTypeDecoration narrationDecoration
+    ) {
+        this(data, chatDecoration, null, narrationDecoration, null);
+    }
+
+    public StaticChatType(
+            @UnknownNullability("only nullable for 1.19") ChatTypeDecoration chatDecoration,
+            @Nullable ChatTypeDecoration overlayDecoration,
+            @UnknownNullability("only nullable for 1.19") ChatTypeDecoration narrationDecoration,
+            @Nullable NarrationPriority narrationPriority
+    ) {
+        this(null, chatDecoration, overlayDecoration, narrationDecoration, narrationPriority);
+    }
+
+    @ApiStatus.Internal
+    public StaticChatType(
+            @Nullable TypesBuilderData data,
+            @Nullable ChatTypeDecoration chatDecoration,
+            @Nullable ChatTypeDecoration overlayDecoration,
+            @Nullable ChatTypeDecoration narrationDecoration,
+            @Nullable NarrationPriority narrationPriority
+    ) {
+        super(data);
+        this.chatDecoration = chatDecoration;
+        this.overlayDecoration = overlayDecoration;
+        this.narrationDecoration = narrationDecoration;
+        this.narrationPriority = narrationPriority;
+    }
+
+    @Override
+    public ChatType copy(@Nullable TypesBuilderData newData) {
+        return new StaticChatType(newData, this.chatDecoration,
+                this.overlayDecoration, this.narrationDecoration, this.narrationPriority);
+    }
+
+    @Override
+    public @UnknownNullability("only nullable for 1.19") ChatTypeDecoration getChatDecoration() {
+        return this.chatDecoration;
+    }
+
+    @Override
+    public @Nullable ChatTypeDecoration getOverlayDecoration() {
+        return this.overlayDecoration;
+    }
+
+    @Override
+    public @UnknownNullability("only nullable for 1.19") ChatTypeDecoration getNarrationDecoration() {
+        return this.narrationDecoration;
+    }
+
+    @Override
+    public @Nullable NarrationPriority getNarrationPriority() {
+        return this.narrationPriority;
+    }
+
+    @Override
+    public boolean deepEquals(@Nullable Object obj) {
+        if (this == obj) return true;
+        if (!(obj instanceof StaticChatType)) return false;
+        StaticChatType that = (StaticChatType) obj;
+        if (!Objects.equals(this.chatDecoration, that.chatDecoration)) return false;
+        if (!Objects.equals(this.overlayDecoration, that.overlayDecoration)) return false;
+        if (!Objects.equals(this.narrationDecoration, that.narrationDecoration)) return false;
+        return this.narrationPriority == that.narrationPriority;
+    }
+
+    @Override
+    public int deepHashCode() {
+        return Objects.hash(this.chatDecoration, this.overlayDecoration, this.narrationDecoration, this.narrationPriority);
+    }
+
+    @Override
+    public String toString() {
+        return "StaticChatType{chatDecoration=" + this.chatDecoration + ", overlayDecoration=" + this.overlayDecoration + ", narrationDecoration=" + this.narrationDecoration + ", narrationPriority=" + this.narrationPriority + '}';
+    }
+}
@@ -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;
+    }
+}
@@ -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();
+}
@@ -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);
+}
@@ -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();
+    }
+}
@@ -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;
+    }
+}
@@ -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;
+    }
+}
@@ -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;
+    }
+}
@@ -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;
+    }
+}
@@ -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;
+    }
+}
@@ -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();
+    }
+}
@@ -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);
+    }
+}
@@ -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;
+    }
+}
@@ -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;
+    }
+}
@@ -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;
    }
@@ -30,7 +30,7 @@ import java.util.UUID;
 public class ChatMessage_v1_19_1 extends ChatMessage_v1_16 {
    private String plainContent;
    private @Nullable Component unsignedChatContent;
-    private ChatTypeBoundNetwork chatType;
+    private ChatType.Bound chatFormatting;
    private byte @Nullable [] previousSignature;
    private byte[] signature;
    private Instant timestamp;
@@ -40,15 +40,15 @@ public class ChatMessage_v1_19_1 extends ChatMessage_v1_16 {

    public ChatMessage_v1_19_1(String plainContent, Component decoratedChatContent,
                               @Nullable Component unsignedChatContent,
-                               UUID senderUUID, ChatTypeBoundNetwork chatType,
+                               UUID senderUUID, ChatType.Bound chatFormatting,
                               byte @Nullable [] previousSignature, byte[] signature,
                               Instant timestamp, long salt,
                               LastSeenMessages lastSeenMessages,
                               FilterMask filterMask) {
-        super(decoratedChatContent, chatType.getType(), senderUUID);
+        super(decoratedChatContent, chatFormatting.getType(), senderUUID);
        this.plainContent = plainContent;
        this.unsignedChatContent = unsignedChatContent;
-        this.chatType = chatType;
+        this.chatFormatting = chatFormatting;
        this.previousSignature = previousSignature;
        this.signature = signature;
        this.timestamp = timestamp;
@@ -79,20 +79,38 @@ public class ChatMessage_v1_19_1 extends ChatMessage_v1_16 {

    @Override
    public ChatType getType() {
-        return chatType.getType();
+        return chatFormatting.getType();
    }

    @Override
    public void setType(ChatType type) {
-        chatType.setType(type);
+        chatFormatting.setType(type);
    }

-    public ChatTypeBoundNetwork getChatType() {
-        return chatType;
+    public ChatType.Bound getChatFormatting() {
+        return chatFormatting;
    }

-    public void setChatType(ChatTypeBoundNetwork type) {
-        this.chatType = type;
+    public void setChatFormatting(ChatType.Bound chatFormatting) {
+        this.chatFormatting = chatFormatting;
+    }
+
+    /**
+     * Retrieves the chat formatting. Please refer to {@link ChatMessage_v1_19_1#getChatFormatting}
+     * @return chat formatting which contains the actual chat type.
+     */
+    @Deprecated
+    public ChatType.Bound getChatType() {
+        return chatFormatting;
+    }
+
+    /**
+     * Sets the chat formatting. Please refer to {@link ChatMessage_v1_19_1#setChatFormatting}
+     * @param chatFormatting formatting which contains the actual chat type.
+     */
+    @Deprecated
+    public void setChatType(ChatType.Bound chatFormatting) {
+        this.chatFormatting = chatFormatting;
    }

    public byte @Nullable [] getPreviousSignature() {
@@ -143,6 +161,10 @@ public class ChatMessage_v1_19_1 extends ChatMessage_v1_16 {
        this.filterMask = filterMask;
    }

+    /**
+     * Please refer to {@link com.github.retrooper.packetevents.protocol.chat.ChatType.Bound}
+     */
+    @Deprecated
    public static class ChatTypeBoundNetwork {
        private ChatType type;
        private Component name;
@@ -1,5 +1,6 @@
 package com.github.retrooper.packetevents.protocol.chat.message;

+import com.github.retrooper.packetevents.protocol.chat.ChatType;
 import com.github.retrooper.packetevents.protocol.chat.LastSeenMessages;
 import com.github.retrooper.packetevents.protocol.chat.filter.FilterMask;
 import com.github.retrooper.packetevents.util.adventure.AdventureSerializer;
@@ -9,7 +10,6 @@ import org.jetbrains.annotations.Nullable;
 import java.time.Instant;
 import java.util.Optional;
 import java.util.UUID;
-//We'll extend ChatMessage_v1_16 for now, hopefully no breaking changes in the future
 public class ChatMessage_v1_19_3 extends ChatMessage_v1_16 {
    int index;
    byte[] signature;
@@ -19,10 +19,10 @@ public class ChatMessage_v1_19_3 extends ChatMessage_v1_16 {
    LastSeenMessages.Packed lastSeenMessagesPacked;
    @Nullable Component unsignedChatContent;
    FilterMask filterMask;
-    ChatMessage_v1_19_1.ChatTypeBoundNetwork chatType;
+    ChatType.Bound chatFormatting;

-    public ChatMessage_v1_19_3(UUID senderUUID, int index, byte[] signature, String plainContent, Instant timestamp, long salt, LastSeenMessages.Packed lastSeenMessagesPacked, @Nullable Component unsignedChatContent, FilterMask filterMask, ChatMessage_v1_19_1.ChatTypeBoundNetwork chatType) {
-        super(Component.text(plainContent), chatType.getType(), senderUUID);
+    public ChatMessage_v1_19_3(UUID senderUUID, int index, byte[] signature, String plainContent, Instant timestamp, long salt, LastSeenMessages.Packed lastSeenMessagesPacked, @Nullable Component unsignedChatContent, FilterMask filterMask, ChatType.Bound chatFormatting) {
+        super(Component.text(plainContent), chatFormatting.getType(), senderUUID);
        this.index = index;
        this.signature = signature;
        this.plainContent = plainContent;
@@ -31,7 +31,7 @@ public class ChatMessage_v1_19_3 extends ChatMessage_v1_16 {
        this.lastSeenMessagesPacked = lastSeenMessagesPacked;
        this.unsignedChatContent = unsignedChatContent;
        this.filterMask = filterMask;
-        this.chatType = chatType;
+        this.chatFormatting = chatFormatting;
    }

    public int getIndex() {
@@ -109,11 +109,30 @@ public class ChatMessage_v1_19_3 extends ChatMessage_v1_16 {
        this.filterMask = filterMask;
    }

-    public ChatMessage_v1_19_1.ChatTypeBoundNetwork getChatType() {
-        return chatType;
+
+    public ChatType.Bound getChatFormatting() {
+        return chatFormatting;
    }

-    public void setChatType(ChatMessage_v1_19_1.ChatTypeBoundNetwork chatType) {
-        this.chatType = chatType;
+    public void setChatFormatting(ChatType.Bound chatFormatting) {
+        this.chatFormatting = chatFormatting;
+    }
+
+    /**
+     * Retrieves the chat formatting. Please refer to {@link ChatMessage_v1_19_3#getChatFormatting}
+     * @return chat formatting which contains the actual chat type.
+     */
+    @Deprecated
+    public ChatType.Bound getChatType() {
+        return chatFormatting;
+    }
+
+    /**
+     * Sets the chat formatting. Please refer to {@link ChatMessage_v1_19_3#setChatFormatting}
+     * @param chatFormatting formatting which contains the actual chat type.
+     */
+    @Deprecated
+    public void setChatType(ChatType.Bound chatFormatting) {
+        this.chatFormatting = chatFormatting;
    }
 }
@@ -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.chat.message;
+
+import com.github.retrooper.packetevents.protocol.chat.ChatType;
+import com.github.retrooper.packetevents.protocol.chat.LastSeenMessages;
+import com.github.retrooper.packetevents.protocol.chat.filter.FilterMask;
+import net.kyori.adventure.text.Component;
+import org.jetbrains.annotations.Nullable;
+
+import java.time.Instant;
+import java.util.UUID;
+
+//We'll extend ChatMessage_v1_19_3 for now, hopefully no breaking changes in the future
+public class ChatMessage_v1_21_5 extends ChatMessage_v1_19_3 {
+
+    int globalIndex;
+
+    public ChatMessage_v1_21_5(int globalIndex, UUID senderUUID, int index, byte[] signature, String plainContent,
+                               Instant timestamp, long salt, LastSeenMessages.Packed lastSeenMessagesPacked, @Nullable Component unsignedChatContent,
+                               FilterMask filterMask, ChatType.Bound chatFormatting) {
+        super(senderUUID, index, signature, plainContent, timestamp, salt, lastSeenMessagesPacked, unsignedChatContent, filterMask, chatFormatting);
+        this.globalIndex = globalIndex;
+    }
+
+    public int getGlobalIndex() {
+        return this.globalIndex;
+    }
+
+    public void setGlobalIndex(int globalIndex) {
+        this.globalIndex = globalIndex;
+    }
+}
@@ -31,14 +31,13 @@ public class ChatMessageProcessorLegacy implements ChatMessageProcessor {
    @Override
    public ChatMessage readChatMessage(@NotNull PacketWrapper<?> wrapper) {
        Component chatContent = wrapper.readComponent();
-        int id = wrapper.readByte();
-        ChatType type = ChatTypes.getById(wrapper.getServerVersion().toClientVersion(), id);
+        ChatType type = wrapper.readMappedEntity(ChatTypes.getRegistry());
        return new ChatMessageLegacy(chatContent, type);
    }

    @Override
    public void writeChatMessage(@NotNull PacketWrapper<?> wrapper, @NotNull ChatMessage data) {
        wrapper.writeComponent(data.getChatContent());
-        wrapper.writeByte(data.getType().getId(wrapper.getServerVersion().toClientVersion()));
+        wrapper.writeMappedEntity(data.getType());
    }
 }
@@ -33,8 +33,7 @@ public class ChatMessageProcessor_v1_16 implements ChatMessageProcessor {
    @Override
    public ChatMessage readChatMessage(@NotNull PacketWrapper<?> wrapper) {
        Component chatContent = wrapper.readComponent();
-        int id = wrapper.readByte();
-        ChatType type = ChatTypes.getById(wrapper.getServerVersion().toClientVersion(), id);
+        ChatType type = wrapper.readMappedEntity(ChatTypes.getRegistry());
        UUID senderUUID = wrapper.readUUID();
        return new ChatMessage_v1_16(chatContent, type, senderUUID);
    }
@@ -42,7 +41,7 @@ public class ChatMessageProcessor_v1_16 implements ChatMessageProcessor {
    @Override
    public void writeChatMessage(@NotNull PacketWrapper<?> wrapper, @NotNull ChatMessage data) {
        wrapper.writeComponent(data.getChatContent());
-        wrapper.writeByte(data.getType().getId(wrapper.getServerVersion().toClientVersion()));
+        wrapper.writeMappedEntity(data.getType());
        wrapper.writeUUID(((ChatMessage_v1_16) data).getSenderUUID());
    }
 }
@@ -36,8 +36,7 @@ public class ChatMessageProcessor_v1_19 implements ChatMessageProcessor {
    public ChatMessage readChatMessage(@NotNull PacketWrapper<?> wrapper) {
        Component chatContent = wrapper.readComponent();
        Component unsignedChatContent = wrapper.readOptional(PacketWrapper::readComponent);
-        int id = wrapper.readVarInt();
-        ChatType type = ChatTypes.getById(wrapper.getServerVersion().toClientVersion(), id);
+        ChatType type = wrapper.readMappedEntity(ChatTypes.getRegistry());
        UUID senderUUID = wrapper.readUUID();
        Component senderDisplayName = wrapper.readComponent();
        @Nullable Component teamName = wrapper.readOptional(PacketWrapper::readComponent);
@@ -53,7 +52,7 @@ public class ChatMessageProcessor_v1_19 implements ChatMessageProcessor {
        ChatMessage_v1_19 newData = (ChatMessage_v1_19) data;
        wrapper.writeComponent(newData.getChatContent());
        wrapper.writeOptional(newData.getUnsignedChatContent(), PacketWrapper::writeComponent);
-        wrapper.writeVarInt(newData.getType().getId(wrapper.getServerVersion().toClientVersion()));
+        wrapper.writeMappedEntity(newData.getType());
        wrapper.writeUUID(newData.getSenderUUID());
        wrapper.writeComponent(newData.getSenderDisplayName());
        wrapper.writeOptional(newData.getTeamName(), PacketWrapper::writeComponent);
@@ -50,8 +50,8 @@ public class ChatMessageProcessor_v1_19_1 implements ChatMessageProcessor {
        LastSeenMessages lastSeenMessages = wrapper.readLastSeenMessages();
        Component unsignedChatContent = wrapper.readOptional(PacketWrapper::readComponent);
        FilterMask filterMask = wrapper.readFilterMask();
-        ChatMessage_v1_19_1.ChatTypeBoundNetwork chatType = wrapper.readChatTypeBoundNetwork();
-        return new ChatMessage_v1_19_1(plainContent, chatContent, unsignedChatContent, senderUUID, chatType,
+        ChatType.Bound chatFormatting = wrapper.readChatTypeBoundNetwork();
+        return new ChatMessage_v1_19_1(plainContent, chatContent, unsignedChatContent, senderUUID, chatFormatting,
                previousSignature, signature, timestamp, salt, lastSeenMessages, filterMask);
    }

@@ -68,6 +68,6 @@ public class ChatMessageProcessor_v1_19_1 implements ChatMessageProcessor {
        wrapper.writeLastSeenMessages(newData.getLastSeenMessages());
        wrapper.writeOptional(newData.getUnsignedChatContent(), PacketWrapper::writeComponent);
        wrapper.writeFilterMask(newData.getFilterMask());
-        wrapper.writeChatTypeBoundNetwork(newData.getChatType());
+        wrapper.writeChatTypeBoundNetwork(newData.getChatFormatting());
    }
 }
@@ -1,5 +1,6 @@
 package com.github.retrooper.packetevents.protocol.chat.message.reader.impl;

+import com.github.retrooper.packetevents.protocol.chat.ChatType;
 import com.github.retrooper.packetevents.protocol.chat.LastSeenMessages;
 import com.github.retrooper.packetevents.protocol.chat.filter.FilterMask;
 import com.github.retrooper.packetevents.protocol.chat.message.ChatMessage;
@@ -25,7 +26,7 @@ public class ChatMessageProcessor_v1_19_3 implements ChatMessageProcessor {
        LastSeenMessages.Packed lastSeenMessagesPacked = wrapper.readLastSeenMessagesPacked();
        Component unsignedChatContent = wrapper.readOptional(PacketWrapper::readComponent);
        FilterMask filterMask = wrapper.readFilterMask();
-        ChatMessage_v1_19_1.ChatTypeBoundNetwork chatType = wrapper.readChatTypeBoundNetwork();
+        ChatType.Bound chatType = wrapper.readChatTypeBoundNetwork();

        return new ChatMessage_v1_19_3(senderUUID, index, signature, plainContent, timestamp, salt, lastSeenMessagesPacked, unsignedChatContent, filterMask, chatType);
    }
@@ -42,6 +43,6 @@ public class ChatMessageProcessor_v1_19_3 implements ChatMessageProcessor {
        wrapper.writeLastSeenMessagesPacked(newData.getLastSeenMessagesPacked());
        wrapper.writeOptional(newData.getUnsignedChatContent().orElse(null), PacketWrapper::writeComponent);
        wrapper.writeFilterMask(newData.getFilterMask());
-        wrapper.writeChatTypeBoundNetwork(newData.getChatType());
+        wrapper.writeChatTypeBoundNetwork(newData.getChatFormatting());
    }
 }
@@ -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.message.reader.impl;
+
+import com.github.retrooper.packetevents.protocol.chat.ChatType;
+import com.github.retrooper.packetevents.protocol.chat.LastSeenMessages;
+import com.github.retrooper.packetevents.protocol.chat.filter.FilterMask;
+import com.github.retrooper.packetevents.protocol.chat.message.ChatMessage;
+import com.github.retrooper.packetevents.protocol.chat.message.ChatMessage_v1_21_5;
+import com.github.retrooper.packetevents.protocol.chat.message.reader.ChatMessageProcessor;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.text.Component;
+import org.jetbrains.annotations.NotNull;
+
+import java.time.Instant;
+import java.util.UUID;
+
+public class ChatMessageProcessor_v1_21_5 implements ChatMessageProcessor {
+
+    @Override
+    public ChatMessage readChatMessage(@NotNull PacketWrapper<?> wrapper) {
+        int globalIndex = wrapper.readVarInt();
+        UUID senderUUID = wrapper.readUUID();
+        int index = wrapper.readVarInt();
+        byte[] signature = wrapper.readOptional((w) -> w.readBytes(256));
+        String plainContent = wrapper.readString(256);
+        Instant timestamp = wrapper.readTimestamp();
+        long salt = wrapper.readLong();
+        LastSeenMessages.Packed lastSeenMessagesPacked = wrapper.readLastSeenMessagesPacked();
+        Component unsignedChatContent = wrapper.readOptional(PacketWrapper::readComponent);
+        FilterMask filterMask = wrapper.readFilterMask();
+        ChatType.Bound chatType = wrapper.readChatTypeBoundNetwork();
+
+        return new ChatMessage_v1_21_5(globalIndex, senderUUID, index, signature, plainContent, timestamp, salt, lastSeenMessagesPacked, unsignedChatContent, filterMask, chatType);
+    }
+
+    @Override
+    public void writeChatMessage(@NotNull PacketWrapper<?> wrapper, @NotNull ChatMessage data) {
+        ChatMessage_v1_21_5 newData = (ChatMessage_v1_21_5) data;
+        wrapper.writeVarInt(newData.getGlobalIndex());
+        wrapper.writeUUID(newData.getSenderUUID());
+        wrapper.writeVarInt(newData.getIndex());
+        wrapper.writeOptional(newData.getSignature(), PacketWrapper::writeBytes);
+        wrapper.writeString(newData.getPlainContent());
+        wrapper.writeTimestamp(newData.getTimestamp());
+        wrapper.writeLong(newData.getSalt());
+        wrapper.writeLastSeenMessagesPacked(newData.getLastSeenMessagesPacked());
+        wrapper.writeOptional(newData.getUnsignedChatContent().orElse(null), PacketWrapper::writeComponent);
+        wrapper.writeFilterMask(newData.getFilterMask());
+        wrapper.writeChatTypeBoundNetwork(newData.getChatFormatting());
+    }
+}
@@ -0,0 +1,40 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2022 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.message.reader.impl;
+
+import com.github.retrooper.packetevents.protocol.chat.ChatTypes;
+import com.github.retrooper.packetevents.protocol.chat.message.ChatMessage;
+import com.github.retrooper.packetevents.protocol.chat.message.ChatMessageLegacy;
+import com.github.retrooper.packetevents.protocol.chat.message.reader.ChatMessageProcessor;
+import com.github.retrooper.packetevents.wrapper.PacketWrapper;
+import net.kyori.adventure.text.Component;
+import org.jetbrains.annotations.NotNull;
+
+public class ChatMessageProcessor_v1_7 implements ChatMessageProcessor {
+    @Override
+    public ChatMessage readChatMessage(@NotNull PacketWrapper<?> wrapper) {
+        Component chatContent = wrapper.readComponent();
+        return new ChatMessageLegacy(chatContent, ChatTypes.CHAT);
+    }
+
+    @Override
+    public void writeChatMessage(@NotNull PacketWrapper<?> wrapper, @NotNull ChatMessage data) {
+        wrapper.writeComponent(data.getChatContent());
+    }
+}
@@ -0,0 +1,221 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2024 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.color;
+
+import com.github.retrooper.packetevents.protocol.nbt.NBT;
+import com.github.retrooper.packetevents.protocol.nbt.NBTFloat;
+import com.github.retrooper.packetevents.protocol.nbt.NBTInt;
+import com.github.retrooper.packetevents.protocol.nbt.NBTList;
+import com.github.retrooper.packetevents.protocol.nbt.NBTNumber;
+import com.github.retrooper.packetevents.protocol.nbt.NBTType;
+import com.github.retrooper.packetevents.protocol.player.ClientVersion;
+import com.github.retrooper.packetevents.util.MathUtil;
+import org.jetbrains.annotations.Range;
+import org.jspecify.annotations.NullMarked;
+
+@NullMarked
+public final class AlphaColor extends Color {
+
+    public static final AlphaColor WHITE = new AlphaColor(0xFFFFFFFF);
+    public static final AlphaColor BLACK = new AlphaColor(0xFF000000);
+    public static final AlphaColor TRANSPARENT = new AlphaColor(0x00000000);
+
+    private final int alpha;
+
+    public AlphaColor(
+            @Range(from = 0L, to = 255L) int red,
+            @Range(from = 0L, to = 255L) int green,
+            @Range(from = 0L, to = 255L) int blue
+    ) {
+        this(255, red, green, blue);
+    }
+
+    public AlphaColor(
+            @Range(from = 0L, to = 255L) int alpha,
+            @Range(from = 0L, to = 255L) int red,
+            @Range(from = 0L, to = 255L) int green,
+            @Range(from = 0L, to = 255L) int blue
+    ) {
+        super(red, green, blue);
+        this.alpha = MathUtil.clamp(alpha, 0, 255);
+    }
+
+    public AlphaColor(
+            @Range(from = 0L, to = 1L) float red,
+            @Range(from = 0L, to = 1L) float green,
+            @Range(from = 0L, to = 1L) float blue
+    ) {
+        this(1f, red, green, blue);
+    }
+
+    public AlphaColor(
+            @Range(from = 0L, to = 1L) float alpha,
+            @Range(from = 0L, to = 1L) float red,
+            @Range(from = 0L, to = 1L) float green,
+            @Range(from = 0L, to = 1L) float blue
+    ) {
+        super(red, green, blue);
+        this.alpha = MathUtil.floor(alpha * 255f);
+    }
+
+    public AlphaColor(int rgb) {
+        this((rgb >> 24) & BIT_MASK,
+                (rgb >> 16) & BIT_MASK,
+                (rgb >> 8) & BIT_MASK,
+                rgb & BIT_MASK);
+    }
+
+    public static AlphaColor decode(NBT nbt, ClientVersion version) {
+        if (nbt instanceof NBTNumber) {
+            return new AlphaColor(((NBTNumber) nbt).getAsInt());
+        }
+        NBTList<?> list = (NBTList<?>) nbt;
+        float red = ((NBTNumber) list.getTag(0)).getAsFloat();
+        float green = ((NBTNumber) list.getTag(1)).getAsFloat();
+        float blue = ((NBTNumber) list.getTag(2)).getAsFloat();
+        float alpha = ((NBTNumber) list.getTag(3)).getAsFloat();
+        return new AlphaColor(alpha, red, green, blue);
+    }
+
+    public static NBT encode(AlphaColor color, ClientVersion version) {
+        if (version.isNewerThanOrEquals(ClientVersion.V_1_21_2)) {
+            return new NBTInt(color.asRGB());
+        }
+        NBTList<NBTFloat> list = new NBTList<>(NBTType.FLOAT, 4);
+        list.addTag(new NBTFloat(color.red));
+        list.addTag(new NBTFloat(color.green));
+        list.addTag(new NBTFloat(color.blue));
+        list.addTag(new NBTFloat(color.alpha));
+        return list;
+    }
+
+    @Override
+    public AlphaColor withAlpha() {
+        return this;
+    }
+
+    @Override
+    public AlphaColor withRed(@Range(from = 0L, to = 255L) int red) {
+        return new AlphaColor(this.alpha, red, this.green, this.blue);
+    }
+
+    @Override
+    public AlphaColor withGreen(@Range(from = 0L, to = 255L) int green) {
+        return new AlphaColor(this.alpha, this.red, green, this.blue);
+    }
+
+    @Override
+    public AlphaColor withBlue(@Range(from = 0L, to = 255L) int blue) {
+        return new AlphaColor(this.alpha, this.red, this.green, blue);
+    }
+
+    @Override
+    public int asRGB() {
+        return (this.alpha << 24) | (this.red << 16) | (this.green << 8) | this.blue;
+    }
+
+    @Override
+    public AlphaColor plus(Color other) {
+        return new AlphaColor(
+                this.alpha,
+                this.red + other.red,
+                this.green + other.green,
+                this.blue + other.blue
+        );
+    }
+
+    @Override
+    public AlphaColor minus(Color other) {
+        return new AlphaColor(
+                this.alpha,
+                this.red - other.red,
+                this.green - other.green,
+                this.blue - other.blue
+        );
+    }
+
+    @Override
+    public AlphaColor times(Color other) {
+        if (other.alpha() == 255 && other.red == 255 && other.green == 255 && other.blue == 255) {
+            return this;
+        }
+        return new AlphaColor(
+                (this.alpha * other.alpha()) / 255,
+                (this.red * other.red) / 255,
+                (this.green * other.green) / 255,
+                (this.blue * other.blue) / 255
+        );
+    }
+
+    public AlphaColor blendWith(AlphaColor source) {
+        int srcAlpha = source.alpha;
+        if (srcAlpha == 255) {
+            return source;
+        } else if (srcAlpha == 0) {
+            return this;
+        }
+        int alpha = srcAlpha + (this.alpha * (255 - srcAlpha)) / 255;
+        return new AlphaColor(
+                alpha,
+                alphaBlendChannel(alpha, srcAlpha, this.red, source.red),
+                alphaBlendChannel(alpha, srcAlpha, this.green, source.green),
+                alphaBlendChannel(alpha, srcAlpha, this.blue, source.blue)
+        );
+    }
+
+    protected static int alphaBlendChannel(int alpha, int srcAlpha, int dest, int src) {
+        return (src * srcAlpha + dest * (alpha - srcAlpha)) / alpha;
+    }
+
+    @Override
+    public AlphaColor asGrayscale() {
+        int grayscale = (int) ((float) this.red * 0.30f + (float) this.green * 0.59f + (float) this.blue * 0.11f);
+        return new AlphaColor(this.alpha, grayscale, grayscale, grayscale);
+    }
+
+    @Override
+    public AlphaColor scale(float scale) {
+        return this.scale(scale, scale, scale);
+    }
+
+    @Override
+    public AlphaColor scale(float redScale, float greenScale, float blueScale) {
+        return new AlphaColor(
+                this.alpha,
+                (int) ((float) this.red * redScale),
+                (int) ((float) this.green * greenScale),
+                (int) ((float) this.blue * blueScale)
+        );
+    }
+
+    @Override
+    public AlphaColor lerpSrgb(Color dest, float t) {
+        return new AlphaColor(
+                MathUtil.lerp(t, this.alpha, dest.alpha()),
+                MathUtil.lerp(t, this.red, dest.red),
+                MathUtil.lerp(t, this.green, dest.green),
+                MathUtil.lerp(t, this.blue, dest.blue)
+        );
+    }
+
+    @Override
+    public @Range(from = 0L, to = 255L) int alpha() {
+        return this.alpha;
+    }
+}
				`@@ -0,0 +1 @@`
				`.gitea/CODEOWNERS linguist-detectable=false`