Remove invalid chunk entities for 1.20.5 clients

Fixes #3804

.editorconfig

@@ -0,0 +1,16 @@
+[*]
+charset = utf-8
+indent_size = 4
+indent_style = space
+insert_final_newline = false
+tab_width = 4
+
+[*.java]
+ij_java_class_count_to_use_import_on_demand = 999999
+ij_java_names_count_to_use_import_on_demand = 999999
+ij_java_imports_layout = *,|,$*
+ij_java_generate_final_locals = true
+ij_java_generate_final_parameters = true
+
+[{*.json,*.yml}]
+indent_size = 2

.github/FUNDING.yml

@@ -0,0 +1,2 @@
+github: kennytv
+patreon: kennytv

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -23,11 +23,11 @@ body:
     attributes:
       label: Console Error
       description: |
-        If you encounter warnings/errors in your console, **paste them with https://paste.gg/ and put the paste link here**.
+        If you encounter warnings/errors in your console, **paste them with https://mclo.gs/ and put the paste link here**.
         If the error is small/less than 10 lines, you may put it directly into this field.
       value: |
         ```
-        Put the paste.gg link or text here.
+        Put the mclo.gs link or text here.
         ```
       placeholder: Please do not remove the grave accents; simply replace the line of text in the middle.
     validations:
@@ -71,7 +71,7 @@ body:
     attributes:
       label: Additional Server Info
       description: |
-        Do you use a proxy (eg. BungeeCord)? What software do you use and what plugins?
+        Do you use a proxy (e.g. BungeeCord)? What software do you use and what plugins?
       placeholder: |
         Example: "I also use BungeeCord with the following plugins: x, y, z"
     validations:

.github/workflows/gradle.yml

@@ -1,6 +1,3 @@
-# This workflow will build a Java project with Gradle
-# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle
-
 name: Java CI with Gradle
 
 on: [push, pull_request]
@@ -13,16 +10,15 @@ jobs:
     runs-on: ubuntu-22.04
 
     steps:
-    - uses: actions/checkout@v3
-    - uses: gradle/wrapper-validation-action@v1
-    - name: Set up JDK 11
-      uses: actions/setup-java@v3
+    - name: Checkout Repository
+      uses: actions/checkout@v4
+    - name: Validate Gradle Wrapper
+      uses: gradle/wrapper-validation-action@v2
+    - name: Set up JDK 17
+      uses: actions/setup-java@v4
       with:
         distribution: 'temurin'
-        java-version: 11
+        java-version: 17
+        check-latest: true
     - name: Build with Gradle
       run: ./gradlew build
-    - uses: actions/upload-artifact@v3
-      with:
-        name: artifact
-        path: build/libs

.github/workflows/publish.yml

@@ -0,0 +1,27 @@
+name: Publish to Hangar and Modrinth
+on:
+  push:
+    branches:
+      - master
+      - dev
+
+jobs:
+  publish:
+    if: github.repository_owner == 'ViaVersion'
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+      - name: Validate Gradle Wrapper
+        uses: gradle/wrapper-validation-action@v2
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: 17
+          check-latest: true
+      - name: Publish
+        env:
+          HANGAR_TOKEN: ${{ secrets.HANGAR_TOKEN }}
+          MODRINTH_TOKEN: ${{ secrets.MODRINTH_TOKEN }}
+        run: ./gradlew build modrinth publishAllPublicationsToHangar --stacktrace

.idea/copyright/viaversion_gpl.xml

@@ -1,6 +1,6 @@
 <component name="CopyrightManager">
   <copyright>
-    <option name="notice" value="This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion&#10;Copyright (C) &amp;#36;originalComment.match(&quot;Copyright \(C\) (\d+)&quot;, 1, &quot;-&quot;)&amp;#36;today.year ViaVersion and contributors&#10;&#10;This program is free software: you can redistribute it and/or modify&#10;it under the terms of the GNU General Public License as published by&#10;the Free Software Foundation, either version 3 of the License, or&#10;(at your option) any later version.&#10;&#10;This program is distributed in the hope that it will be useful,&#10;but WITHOUT ANY WARRANTY; without even the implied warranty of&#10;MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the&#10;GNU General Public License for more details.&#10;&#10;You should have received a copy of the GNU General Public License&#10;along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;." />
+    <option name="notice" value="This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion&#10;Copyright (C) 2016-&amp;#36;today.year ViaVersion and contributors&#10;&#10;This program is free software: you can redistribute it and/or modify&#10;it under the terms of the GNU General Public License as published by&#10;the Free Software Foundation, either version 3 of the License, or&#10;(at your option) any later version.&#10;&#10;This program is distributed in the hope that it will be useful,&#10;but WITHOUT ANY WARRANTY; without even the implied warranty of&#10;MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the&#10;GNU General Public License for more details.&#10;&#10;You should have received a copy of the GNU General Public License&#10;along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;." />
     <option name="myName" value="viaversion-gpl" />
   </copyright>
 </component>

.idea/copyright/viaversion_mit.xml

@@ -1,6 +1,6 @@
 <component name="CopyrightManager">
   <copyright>
-    <option name="notice" value="This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion&#10;Copyright (C) &amp;#36;originalComment.match(&quot;Copyright \(C\) (\d+)&quot;, 1, &quot;-&quot;)&amp;#36;today.year ViaVersion and contributors&#10;&#10;Permission is hereby granted, free of charge, to any person obtaining a copy&#10;of this software and associated documentation files (the &quot;Software&quot;), to deal&#10;in the Software without restriction, including without limitation the rights&#10;to use, copy, modify, merge, publish, distribute, sublicense, and/or sell&#10;copies of the Software, and to permit persons to whom the Software is&#10;furnished to do so, subject to the following conditions:&#10;&#10;The above copyright notice and this permission notice shall be included in all&#10;copies or substantial portions of the Software.&#10;&#10;THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR&#10;IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,&#10;FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE&#10;AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER&#10;LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,&#10;OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE&#10;SOFTWARE." />
+    <option name="notice" value="This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion&#10;Copyright (C) 2016-&amp;#36;today.year ViaVersion and contributors&#10;&#10;Permission is hereby granted, free of charge, to any person obtaining a copy&#10;of this software and associated documentation files (the &quot;Software&quot;), to deal&#10;in the Software without restriction, including without limitation the rights&#10;to use, copy, modify, merge, publish, distribute, sublicense, and/or sell&#10;copies of the Software, and to permit persons to whom the Software is&#10;furnished to do so, subject to the following conditions:&#10;&#10;The above copyright notice and this permission notice shall be included in all&#10;copies or substantial portions of the Software.&#10;&#10;THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR&#10;IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,&#10;FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE&#10;AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER&#10;LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,&#10;OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE&#10;SOFTWARE." />
     <option name="myName" value="viaversion-mit" />
   </copyright>
 </component>

.idea/scopes/ViaVersion_API.xml

@@ -1,3 +1,3 @@
 <component name="DependencyValidationManager">
-  <scope name="ViaVersion-API" pattern="src[viaversion-parent.viaversion-api*]:*..*&amp;&amp;!src[viaversion-parent.viaversion-api.main]:com.viaversion.viaversion.api.minecraft.nbt.*" />
+  <scope name="ViaVersion-API" pattern="src[viaversion-parent.viaversion-api*]:*..*" />
 </component>

README.md

@@ -1,49 +1,41 @@
-# ViaVersion - Spigot, Sponge, BungeeCord, Velocity
+# ViaVersion
 
 [![Latest Release](https://img.shields.io/github/v/release/ViaVersion/ViaVersion)](https://viaversion.com)
 [![Build Status](https://github.com/ViaVersion/ViaVersion/actions/workflows/gradle.yml/badge.svg?branch=master)](https://github.com/ViaVersion/ViaVersion/actions)
 [![Discord](https://img.shields.io/badge/chat-on%20discord-blue.svg)](https://viaversion.com/discord)
 
-**Allows the connection of higher client versions to lower server versions**
+**Allows the connection of higher client versions to lower server versions -
+it works on any platform you can think of.**
+
+The base ViaVersion jar runs on Paper, Velocity, Bungee, and Sponge. We also have projects integrating ViaVersion to run
+on Fabric, Forge, or as a standalone proxy to  join from basically any client version on any server version from the
+past decade. **See [HERE](https://github.com/ViaVersion) for an overview of the different Via\* projects.**
 
 Supported Versions:
 
-![Table (https://i.imgur.com/aSjHvQk.png)](https://i.imgur.com/aSjHvQk.png)
-
-On Paper you may also use ProtocolSupport, but ensure you have the right build for your server version.
+![Table (https://i.imgur.com/sTrVnC2.png)](https://i.imgur.com/sTrVnC2.png)
 
 **User Docs:** https://docs.viaversion.com/display/VIAVERSION/
 
-
-Sources
+Releases/Dev Builds
 --------
-**[OpenNBT](https://github.com/ViaVersion/OpenNBT)**
+You can find official releases in the following places:
 
-**[Via Mappings Generator](https://github.com/ViaVersion/Mappings)**
+- **Hangar (for our plugins)**: https://hangar.papermc.io/ViaVersion/ViaVersion
+- **Modrinth (for our mods)**: https://modrinth.com/mod/viaversion
+- **GitHub**: https://github.com/ViaVersion/ViaVersion/releases
 
-**[Mojang mappings](https://minecraft.fandom.com/wiki/Obfuscation_map)** (Thank you, Mojang, very cool)
+Dev builds for **all** of our projects are on our Jenkins server:
 
-**[wiki.vg](https://wiki.vg)** (Used for historic information regarding packet structure, we also contribute back)
-
-**[Burger](https://github.com/Pokechu22/Burger)** (See [PAaaS](https://github.com/Matsv/Paaas))
-
-
-
-Releases / Dev Builds
---------
-You can find official releases here:
-
-https://www.spigotmc.org/resources/viaversion.19254/history
+- **Jenkins**: https://ci.viaversion.com
 
+ViaVersion as a Dependency
 ----------
 
-You can find official dev builds here:
-
-**Jenkins:** https://ci.viaversion.com
-
 **JavaDocs:** https://jd.viaversion.com
 
-**Maven Repository:**
+**Maven:**
+
 ```xml
 <repository>
     <id>viaversion-repo</id>
@@ -51,7 +43,6 @@ You can find official dev builds here:
 </repository>
 ```
 
-**API-artifact:**
 ```xml
 <dependency>
     <groupId>com.viaversion</groupId>
@@ -61,7 +52,17 @@ You can find official dev builds here:
 </dependency>
 ```
 
-Replace the version depending on your needs.
+**Gradle:**
+
+```kotlin
+repositories {
+    maven("https://repo.viaversion.com")
+}
+
+dependencies {
+    compileOnly("com.viaversion:viaversion-api:VERSION") // Replace the version
+}
+```
 
 If you need access to the existing protocol or platform implementations, use the parent artifact `viaversion`.
 Please note the [differences in licensing](#license).
@@ -69,8 +70,8 @@ Please note the [differences in licensing](#license).
 
 Building
 --------
-After cloning this repository, build the project with Gradle by running `./gradlew build` and take the created jar out of
-the `build/libs` directory.
+After cloning this repository, build the project with Gradle by running `./gradlew build` and take the created jar out
+of the `build/libs` directory.
 
 
 Mapping Files
@@ -78,12 +79,21 @@ Mapping Files
 Mapping files are generated and managed in our [Mappings repository](https://github.com/ViaVersion/Mappings).
 
 
+Resources
+--------
+
+- **[Via Mappings Generator](https://github.com/ViaVersion/Mappings)**
+- **[Mojang mappings](https://minecraft.wiki/w/Obfuscation_map)** (Thank you, Mojang, very cool)
+- **[wiki.vg](https://wiki.vg)** (Used for historic information regarding packet structure, we also contribute back)
+- **[Burger](https://github.com/Pokechu22/Burger)** (See [PAaaS](https://github.com/Matsv/Paaas))
+
 License
 --------
-The entirety of the [API directory](api) (including the legacy API directory) is licensed under the MIT License; see [licenses/MIT.md](licenses/MIT.md) for
+The entirety of the [API directory](api) (including the legacy API directory) is licensed under the MIT License;
+see [licenses/MIT.md](licenses/MIT.md) for
 details.
 
-Everything else, unless explicitly stated otherwise, is licensed under the GNU General Public License, including the end
-product as a whole; see [licenses/GPL.md](licenses/GPL.md) for details.
+Everything else, unless explicitly stated otherwise, is licensed under the GNU General Public License v3, including the
+end-product as a whole; see [licenses/GPL.md](licenses/GPL.md) for details.
 
 Special thanks to all our [Contributors](https://github.com/ViaVersion/ViaVersion/graphs/contributors).

adventure/build.gradle.kts

@@ -1,25 +0,0 @@
-plugins {
-    id("com.github.johnrengelman.shadow")
-}
-
-// Shade and relocate adventure in an extra module, so that common/the rest can directly depend on a
-// relocated adventure without breaking native platform's adventure usage with project wide relocation
-tasks {
-    shadowJar {
-        relocate("net.kyori", "com.viaversion.viaversion.libs.kyori")
-    }
-    build {
-        dependsOn(shadowJar)
-    }
-}
-
-dependencies {
-    api(libs.bundles.adventure) {
-        exclude("org.checkerframework")
-        exclude("net.kyori", "adventure-api")
-        exclude("net.kyori", "adventure-bom")
-        exclude("com.google.code.gson", "gson")
-    }
-}
-
-publishShadowJar()

api-legacy/src/main/java/us/myles/ViaVersion/api/Via.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api-legacy/src/main/java/us/myles/ViaVersion/api/ViaAPI.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api-legacy/src/main/java/us/myles/ViaVersion/api/boss/BossBar.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api-legacy/src/main/java/us/myles/ViaVersion/api/boss/BossColor.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api-legacy/src/main/java/us/myles/ViaVersion/api/boss/BossFlag.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api-legacy/src/main/java/us/myles/ViaVersion/api/boss/BossStyle.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api-legacy/src/main/java/us/myles/ViaVersion/api/protocol/ProtocolRegistry.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api-legacy/src/main/java/us/myles/ViaVersion/api/protocol/ProtocolVersion.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,7 +23,7 @@
 package us.myles.ViaVersion.api.protocol;
 
 import com.google.common.base.Preconditions;
-import com.viaversion.viaversion.api.protocol.version.VersionRange;
+import com.viaversion.viaversion.api.protocol.version.SubVersionRange;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
 import java.util.ArrayList;
@@ -42,23 +42,23 @@ public class ProtocolVersion {
     private static final Int2ObjectMap<ProtocolVersion> versions = new Int2ObjectOpenHashMap<>();
     private static final List<ProtocolVersion> versionList = new ArrayList<>();
 
-    public static final ProtocolVersion v1_4_6 = register(51, "1.4.6/7", new VersionRange("1.4", 6, 7));
+    public static final ProtocolVersion v1_4_6 = register(51, "1.4.6/7", new SubVersionRange("1.4", 6, 7));
     public static final ProtocolVersion v1_5_1 = register(60, "1.5.1");
     public static final ProtocolVersion v1_5_2 = register(61, "1.5.2");
     public static final ProtocolVersion v_1_6_1 = register(73, "1.6.1");
     public static final ProtocolVersion v_1_6_2 = register(74, "1.6.2");
     public static final ProtocolVersion v_1_6_3 = register(77, "1.6.3");
     public static final ProtocolVersion v_1_6_4 = register(78, "1.6.4");
-    public static final ProtocolVersion v1_7_1 = register(4, "1.7-1.7.5", new VersionRange("1.7", 0, 5));
-    public static final ProtocolVersion v1_7_6 = register(5, "1.7.6-1.7.10", new VersionRange("1.7", 6, 10));
+    public static final ProtocolVersion v1_7_1 = register(4, "1.7-1.7.5", new SubVersionRange("1.7", 0, 5));
+    public static final ProtocolVersion v1_7_6 = register(5, "1.7.6-1.7.10", new SubVersionRange("1.7", 6, 10));
     public static final ProtocolVersion v1_8 = register(47, "1.8.x");
     public static final ProtocolVersion v1_9 = register(107, "1.9");
     public static final ProtocolVersion v1_9_1 = register(108, "1.9.1");
     public static final ProtocolVersion v1_9_2 = register(109, "1.9.2");
-    public static final ProtocolVersion v1_9_3 = register(110, "1.9.3/4", new VersionRange("1.9", 3, 4));
+    public static final ProtocolVersion v1_9_3 = register(110, "1.9.3/1.9.4", new SubVersionRange("1.9", 3, 4));
     public static final ProtocolVersion v1_10 = register(210, "1.10.x");
     public static final ProtocolVersion v1_11 = register(315, "1.11");
-    public static final ProtocolVersion v1_11_1 = register(316, "1.11.1/2", new VersionRange("1.11", 1, 2));
+    public static final ProtocolVersion v1_11_1 = register(316, "1.11.1/1.11.2", new SubVersionRange("1.11", 1, 2));
     public static final ProtocolVersion v1_12 = register(335, "1.12");
     public static final ProtocolVersion v1_12_1 = register(338, "1.12.1");
     public static final ProtocolVersion v1_12_2 = register(340, "1.12.2");
@@ -77,14 +77,19 @@ public class ProtocolVersion {
     public static final ProtocolVersion v1_16_1 = register(736, "1.16.1");
     public static final ProtocolVersion v1_16_2 = register(751, "1.16.2");
     public static final ProtocolVersion v1_16_3 = register(753, "1.16.3");
-    public static final ProtocolVersion v1_16_4 = register(754, "1.16.4/5", new VersionRange("1.16", 4, 5));
+    public static final ProtocolVersion v1_16_4 = register(754, "1.16.4/1.16.5", new SubVersionRange("1.16", 4, 5));
     public static final ProtocolVersion v1_17 = register(755, "1.17");
     public static final ProtocolVersion v1_17_1 = register(756, "1.17.1");
-    public static final ProtocolVersion v1_18 = register(757, "1.18/1.18.1", new VersionRange("1.18", 0, 1));
+    public static final ProtocolVersion v1_18 = register(757, "1.18/1.18.1", new SubVersionRange("1.18", 0, 1));
     public static final ProtocolVersion v1_18_2 = register(758, "1.18.2");
     public static final ProtocolVersion v1_19 = register(759, "1.19");
-    public static final ProtocolVersion v1_19_1 = register(760, "1.19.1");
+    public static final ProtocolVersion v1_19_1 = register(760, "1.19.1/1.19.2", new SubVersionRange("1.19", 1, 2));
     public static final ProtocolVersion v1_19_3 = register(761, "1.19.3");
+    public static final ProtocolVersion v1_19_4 = register(762, "1.19.4");
+    public static final ProtocolVersion v1_20 = register(763, "1.20/1.20.1", new SubVersionRange("1.20", 0, 1));
+    public static final ProtocolVersion v1_20_2 = register(764, "1.20.2");
+    public static final ProtocolVersion v1_20_3 = register(765, "1.20.3/1.20.4", new SubVersionRange("1.20", 3, 4));
+    public static final ProtocolVersion v1_20_5 = register(766, "1.20.5");
     public static final ProtocolVersion unknown = register(-1, "UNKNOWN");
 
     public static ProtocolVersion register(int version, String name) {
@@ -95,11 +100,11 @@ public class ProtocolVersion {
         return register(version, snapshotVersion, name, null);
     }
 
-    public static ProtocolVersion register(int version, String name, @Nullable VersionRange versionRange) {
+    public static ProtocolVersion register(int version, String name, @Nullable SubVersionRange versionRange) {
         return register(version, -1, name, versionRange);
     }
 
-    public static ProtocolVersion register(int version, int snapshotVersion, String name, @Nullable VersionRange versionRange) {
+    public static ProtocolVersion register(int version, int snapshotVersion, String name, @Nullable SubVersionRange versionRange) {
         ProtocolVersion protocol = new ProtocolVersion(version, snapshotVersion, name, versionRange);
         versionList.add(protocol);
         versions.put(protocol.getVersion(), protocol);
@@ -162,7 +167,7 @@ public class ProtocolVersion {
         this(version, -1, name, null);
     }
 
-    public ProtocolVersion(int version, int snapshotVersion, String name, @Nullable VersionRange versionRange) {
+    public ProtocolVersion(int version, int snapshotVersion, String name, @Nullable SubVersionRange versionRange) {
         this.version = version;
         this.snapshotVersion = snapshotVersion;
         this.name = name;

api/build.gradle.kts

@@ -1,22 +1,27 @@
 plugins {
     id("net.kyori.blossom")
-    id("via.shadow-conventions")
+    id("org.jetbrains.gradle.plugin.idea-ext")
 }
 
-blossom {
-    replaceToken("\$VERSION", project.version)
-    replaceToken("\$IMPL_VERSION", "git-ViaVersion-${project.version}:${rootProject.latestCommitHash()}")
+sourceSets {
+    main {
+        blossom {
+            javaSources {
+                property("version", project.version.toString())
+                property("impl_version", "git-ViaVersion-${project.version}:${rootProject.latestCommitHash()}")
+            }
+        }
+    }
 }
 
 dependencies {
-    api(projects.adventure) {
-        targetConfiguration = "shadow"
-    }
     api(libs.fastutil)
-    api(libs.flare)
-    api(libs.flareFastutil)
-    api(libs.openNBT)
+    api(libs.vianbt)
     api(libs.gson)
+    implementation(rootProject.libs.text) {
+        exclude("com.google.code.gson", "gson")
+        exclude("com.viaversion", "nbt")
+    }
 
     compileOnlyApi(libs.snakeYaml)
     compileOnlyApi(libs.netty)
@@ -27,3 +32,5 @@ dependencies {
 java {
     withJavadocJar()
 }
+
+publishShadowJar()

api/src/main/java-templates/com/viaversion/viaversion/util/VersionInfo.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -31,5 +31,14 @@ public final class VersionInfo {
      *
      * @see ViaPlatform#getPluginVersion()
      */
-    public static final String VERSION = "$VERSION";
+    public static final String VERSION = "{{ version }}";
+    private static final String IMPLEMENTATION_VERSION = "{{ impl_version }}";
+
+    public static String getVersion() {
+        return VERSION;
+    }
+
+    public static String getImplementationVersion() {
+        return IMPLEMENTATION_VERSION;
+    }
 }

api/src/main/java/com/viaversion/viaversion/api/Via.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/ViaAPI.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -27,10 +27,13 @@ import com.viaversion.viaversion.api.connection.UserConnection;
 import com.viaversion.viaversion.api.legacy.LegacyViaAPI;
 import com.viaversion.viaversion.api.platform.ViaPlatform;
 import com.viaversion.viaversion.api.protocol.ProtocolManager;
+import com.viaversion.viaversion.api.protocol.version.ProtocolVersion;
 import com.viaversion.viaversion.api.protocol.version.ServerProtocolVersion;
 import io.netty.buffer.ByteBuf;
 import java.util.SortedSet;
+import java.util.TreeSet;
 import java.util.UUID;
+import java.util.stream.Collectors;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
@@ -63,7 +66,7 @@ public interface ViaAPI<T> {
      * @return API version incremented with meaningful API changes
      */
     default int apiVersion() {
-        return 19;
+        return 26;
     }
 
     /**
@@ -80,7 +83,18 @@ public interface ViaAPI<T> {
      * @param player the platform's player object, e.g. Bukkit this is Player
      * @return protocol version, for example (47=1.8-1.8.8, 107=1.9, 108=1.9.1), or -1 if no longer connected
      */
-    int getPlayerVersion(T player);
+    default int getPlayerVersion(T player) {
+        return getPlayerProtocolVersion(player).getVersion();
+    }
+
+    /**
+     * Returns the protocol version of a player.
+     * This will also retrieve the version from ProtocolSupport if it's being used.
+     *
+     * @param player the platform's player object, e.g. Bukkit this is Player
+     * @return the protocol version object (see {@link ProtocolVersion}), or ProtocolVersion.unknown if not connected
+     */
+    ProtocolVersion getPlayerProtocolVersion(T player);
 
     /**
      * Returns the protocol version of a player.
@@ -88,7 +102,19 @@ public interface ViaAPI<T> {
      * @param uuid UUID of a player
      * @return protocol version, for example (47=1.8-1.8.8, 107=1.9, 108=1.9.1), or -1 if not connected
      */
-    int getPlayerVersion(UUID uuid);
+    default int getPlayerVersion(UUID uuid) {
+        return getPlayerProtocolVersion(uuid).getVersion();
+    }
+
+
+    /**
+     * Returns the protocol version of a player.
+     * This will also retrieve the version from ProtocolSupport if it's being used.
+     *
+     * @param uuid UUID of a player
+     * @return the protocol version object (see {@link ProtocolVersion}), or ProtocolVersion.unknown if not connected
+     */
+    ProtocolVersion getPlayerProtocolVersion(UUID uuid);
 
     /**
      * Returns whether Via injected into this player connection.
@@ -117,7 +143,7 @@ public interface ViaAPI<T> {
      * Sends a raw packet to the player.
      *
      * @param player the platform's player object, e.g. for Bukkit this is Player
-     * @param packet the packet; you need a VarInt Id, then the packet contents
+     * @param packet the packet; you need a VarInt id, then the packet contents
      * @throws IllegalArgumentException if the player is not injected by Via
      */
     void sendRawPacket(T player, ByteBuf packet);
@@ -126,11 +152,21 @@ public interface ViaAPI<T> {
      * Sends a raw packet to the player.
      *
      * @param uuid   the uuid from the player to send packet
-     * @param packet the packet; you need a VarInt Id, then the packet contents
+     * @param packet the packet; you need a VarInt id, then the packet contents
      * @throws IllegalArgumentException if the player is not injected by Via
      */
     void sendRawPacket(UUID uuid, ByteBuf packet);
 
+    @Deprecated
+    default SortedSet<Integer> getSupportedVersions() {
+        return getSupportedProtocolVersions().stream().map(ProtocolVersion::getVersion).collect(Collectors.toCollection(TreeSet::new));
+    }
+
+    @Deprecated
+    default SortedSet<Integer> getFullSupportedVersions() {
+        return getFullSupportedProtocolVersions().stream().map(ProtocolVersion::getVersion).collect(Collectors.toCollection(TreeSet::new));
+    }
+
     /**
      * Returns the supported protocol versions.
      * This method removes any blocked protocol versions.
@@ -138,14 +174,15 @@ public interface ViaAPI<T> {
      * @return a sorted set of protocol versions
      * @see #getFullSupportedVersions() for a full list
      */
-    SortedSet<Integer> getSupportedVersions();
+    SortedSet<ProtocolVersion> getSupportedProtocolVersions();
+
 
     /**
      * Returns the supported protocol versions, including blocked protocols.
      *
      * @return a sorted set of protocol versions
      */
-    SortedSet<Integer> getFullSupportedVersions();
+    SortedSet<ProtocolVersion> getFullSupportedProtocolVersions();
 
     /**
      * Returns legacy api only applicable on/to legacy versions.

api/src/main/java/com/viaversion/viaversion/api/ViaManager.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,6 +23,7 @@
 package com.viaversion.viaversion.api;
 
 import com.viaversion.viaversion.api.command.ViaVersionCommand;
+import com.viaversion.viaversion.api.configuration.ConfigurationProvider;
 import com.viaversion.viaversion.api.connection.ConnectionManager;
 import com.viaversion.viaversion.api.debug.DebugHandler;
 import com.viaversion.viaversion.api.platform.ViaInjector;
@@ -91,6 +92,13 @@ public interface ViaManager {
      */
     Scheduler getScheduler();
 
+    /**
+     * Returns the configuration provider.
+     *
+     * @return the configuration provider
+     */
+    ConfigurationProvider getConfigurationProvider();
+
     /**
      * If debug is enabled, packets and other otherwise suppressed warnings will be logged.
      *
@@ -138,4 +146,5 @@ public interface ViaManager {
      * @return whether the manager has been initialized
      */
     boolean isInitialized();
+
 }

api/src/main/java/com/viaversion/viaversion/api/command/ViaCommandSender.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -28,7 +28,7 @@ public interface ViaCommandSender {
     /**
      * Check if the sender has a permission.
      *
-     * @param permission Permission string eg. viaversion.admin
+     * @param permission Permission string e.g. viaversion.admin
      * @return True if the sender has the permission
      */
     boolean hasPermission(String permission);

api/src/main/java/com/viaversion/viaversion/api/command/ViaSubCommand.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -58,7 +58,7 @@ public abstract class ViaSubCommand {
      * @return The permission required to use the commands
      */
     public String permission() {
-        return "viaversion.admin";
+        return "viaversion.admin." + name();
     }
 
     /**

api/src/main/java/com/viaversion/viaversion/api/command/ViaVersionCommand.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -32,7 +32,7 @@ public interface ViaVersionCommand {
      * @param command Your own SubCommand instance to handle it.
      * @throws Exception throws an exception when the subcommand already exists or if it's not valid, example: spacee
      */
-    void registerSubCommand(ViaSubCommand command) throws Exception;
+    void registerSubCommand(ViaSubCommand command);
 
     /**
      * Check if a subcommand is registered.

api/src/main/java/com/viaversion/viaversion/api/configuration/Config.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -20,20 +20,34 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.viaversion.viaversion.api.type.types.minecraft;
+package com.viaversion.viaversion.api.configuration;
 
-import com.viaversion.viaversion.api.type.Type;
+import java.util.Map;
 
-@Deprecated/*(forRemoval = true)*/
-public class Particle1_17Type extends AbstractParticleType {
+public interface Config {
 
-    public Particle1_17Type() {
-        readers.put(4, blockHandler());
-        readers.put(25, blockHandler());
-        readers.put(15, dustHandler());
-        readers.put(16, dustTransitionHandler());
-        readers.put(36, itemHandler(Type.FLAT_VAR_INT_ITEM));
-        readers.put(37, vibrationHandler(Type.POSITION1_14));
-    }
+    /**
+     * Reloads the config
+     */
+    void reload();
+
+    /**
+     * Saves the config
+     */
+    void save();
+
+    /**
+     * Sets the specified path to the given value.
+     *
+     * @param path  Path of the object to set.
+     * @param value New value to set the path to
+     */
+    void set(String path, Object value);
+
+    /**
+     * Get all the configuration values
+     *
+     * @return Map with key-values
+     */
+    Map<String, Object> getValues();
 }
-

api/src/main/java/com/viaversion/viaversion/api/configuration/ConfigurationProvider.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -22,32 +22,26 @@
  */
 package com.viaversion.viaversion.api.configuration;
 
-import java.util.Map;
+import java.util.Collection;
 
 public interface ConfigurationProvider {
 
     /**
-     * Sets the specified path to the given value.
+     * Registers a config to be saved or reloaded when {@link #reloadConfigs()} is called.
      *
-     * @param path  Path of the object to set.
-     * @param value New value to set the path to
+     * @param config the config to register
      */
-    void set(String path, Object value);
+    void register(Config config);
 
     /**
-     * Saves the config
-     */
-    void saveConfig();
-
-    /**
-     * Reloads the config
-     */
-    void reloadConfig();
-
-    /**
-     * Get all the configuration values
+     * Returns all registered configs.
      *
-     * @return Map with key-values
+     * @return unmodifiable collection of all registered configs
      */
-    Map<String, Object> getValues();
+    Collection<Config> configs();
+
+    /**
+     * Reloads the configuration files.
+     */
+    void reloadConfigs();
 }

api/src/main/java/com/viaversion/viaversion/api/configuration/ViaVersionConfig.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -27,10 +27,8 @@ import com.viaversion.viaversion.api.connection.StorableObject;
 import com.viaversion.viaversion.api.connection.UserConnection;
 import com.viaversion.viaversion.api.minecraft.WorldIdentifiers;
 import com.viaversion.viaversion.api.protocol.version.BlockedProtocolVersions;
-import it.unimi.dsi.fastutil.ints.IntSet;
-import org.checkerframework.checker.nullness.qual.Nullable;
 
-public interface ViaVersionConfig {
+public interface ViaVersionConfig extends Config {
 
     /**
      * Get if the plugin should check for updates
@@ -87,7 +85,7 @@ public interface ViaVersionConfig {
      * <p>
      * This option requires {@link #isShowShieldWhenSwordInHand()} to be disabled
      *
-     * @return {@code true} if non delayed shield blocking is enabled.
+     * @return {@code true} if non-delayed shield blocking is enabled.
      */
     boolean isNoDelayShieldBlocking();
 
@@ -126,7 +124,7 @@ public interface ViaVersionConfig {
      * Get if the boss bars for 1.9 &amp; 1.10 clients are being stopped from flickering
      * This will keep all boss bars on 100% (not recommended)
      *
-     * @return true if boss bar anti flickering is enabled
+     * @return true if boss bar anti-flickering is enabled
      */
     boolean isBossbarAntiflicker();
 
@@ -235,13 +233,6 @@ public interface ViaVersionConfig {
      */
     boolean isChunkBorderFix();
 
-    /**
-     * Force json transform
-     *
-     * @return true if enabled
-     */
-    boolean isForceJsonTransform();
-
     /**
      * Should we fix nbt array's in json chat messages for 1.12 clients
      *
@@ -272,17 +263,6 @@ public interface ViaVersionConfig {
      */
     BlockedProtocolVersions blockedProtocolVersions();
 
-    /**
-     * Get the blocked protocols
-     *
-     * @return An Integer list
-     * @deprecated use {@link #blockedProtocolVersions()}
-     */
-    @Deprecated/*(forRemoval = true)*/
-    default IntSet getBlockedProtocols() {
-        return blockedProtocolVersions().singleBlockedVersions();
-    }
-
     /**
      * Get the custom disconnect message
      *
@@ -384,7 +364,7 @@ public interface ViaVersionConfig {
     boolean isTruncate1_14Books();
 
     /**
-     * Handles left handed info by using unused bit 7 on Client Settings packet
+     * Handles left-handed info by using unused bit 7 on Client Settings packet
      *
      * @return true if enabled
      */
@@ -443,16 +423,38 @@ public interface ViaVersionConfig {
 
     /***
      * Get the world names that should be returned for each Vanilla dimension.
-     * Note that this can be overriden per-user by using {@link UserConnection#put(StorableObject)} with
+     * Note that this can be overridden per-user by using {@link UserConnection#put(StorableObject)} with
      * a custom instance of {@link WorldIdentifiers} for the user's {@link UserConnection}.
      *
      * @return the global map from vanilla dimensions to world name
      */
     WorldIdentifiers get1_16WorldNamesMap();
 
+    /**
+     * Caches light until chunks are unloaded to allow subsequent chunk update packets as opposed to instantly uncaching when the first chunk data is sent.
+     *
+     * @return true if enabled
+     */
     boolean cache1_17Light();
 
-    @Nullable String chatTypeFormat(String translationKey);
-
+    /**
+     * Force-update 1.19.4+ player's inventory when they try to swap armor in a pre-occupied slot.
+     *
+     * @return true if enabled
+     */
     boolean isArmorToggleFix();
+
+    /**
+     * If disabled, tamed cats will be displayed as ocelots to 1.14+ clients on 1.13 servers. Otherwise, ocelots (tamed and untamed) will be displayed as cats.
+     *
+     * @return true if enabled
+     */
+    boolean translateOcelotToCat();
+
+    /**
+     * Returns the value of the "enforce secure chat" setting sent to 1.19+ clients on join.
+     *
+     * @return the value sent to 1.19+ clients on join
+     */
+    boolean enforceSecureChat();
 }

api/src/main/java/com/viaversion/viaversion/api/connection/ConnectionManager.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -65,7 +65,7 @@ public interface ConnectionManager {
 
     /**
      * Returns the UUID from the frontend connection to this proxy server
-     * Returns null when there isn't a server or this connection isn't frontend or it doesn't have an id
+     * Returns null when there isn't a server or this connection isn't frontend, or it doesn't have an id
      * When ViaVersion is reloaded, this method may not return some players.
      * May not return ProtocolSupport players.
      * <p>

api/src/main/java/com/viaversion/viaversion/api/connection/ProtocolInfo.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,7 +23,9 @@
 package com.viaversion.viaversion.api.connection;
 
 import com.viaversion.viaversion.api.protocol.ProtocolPipeline;
+import com.viaversion.viaversion.api.protocol.packet.Direction;
 import com.viaversion.viaversion.api.protocol.packet.State;
+import com.viaversion.viaversion.api.protocol.version.ProtocolVersion;
 import java.util.UUID;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
@@ -33,30 +35,95 @@ public interface ProtocolInfo {
      * Returns the protocol state the user is currently in.
      *
      * @return protocol state
+     * @deprecated server and client can be in different states, use {@link #getClientState()} or {@link #getServerState()}
      */
-    State getState();
-
-    void setState(State state);
+    @Deprecated/*(forRemoval = true)*/
+    default State getState() {
+        return this.getServerState();
+    }
 
     /**
-     * Returns the user's protocol version, or -1 if not set.
-     * This is set during the {@link State#HANDSHAKE} state.
+     * Returns the protocol state the client is currently in.
      *
-     * @return protocol version, or -1 if not set
+     * @return the client protocol state
      */
-    int getProtocolVersion();
-
-    void setProtocolVersion(int protocolVersion);
+    State getClientState();
 
     /**
-     * Returns the server protocol version the user is connected to, or -1 if not set.
+     * Returns the protocol state the server is currently in.
+     *
+     * @return the server protocol state
+     */
+    State getServerState();
+
+    /**
+     * Returns the protocol state for the given direction.
+     *
+     * @param direction protocol direction
+     * @return state for the given direction
+     */
+    default State getState(final Direction direction) {
+        // Return the state the packet is coming from
+        return direction == Direction.CLIENTBOUND ? this.getServerState() : this.getClientState();
+    }
+
+    /**
+     * Sets both client and server state.
+     *
+     * @param state the new protocol state
+     * @see #setClientState(State)
+     * @see #setServerState(State)
+     */
+    default void setState(final State state) {
+        this.setClientState(state);
+        this.setServerState(state);
+    }
+
+    /**
+     * Sets the client protocol state.
+     *
+     * @param clientState the new client protocol state
+     */
+    void setClientState(State clientState);
+
+    /**
+     * Sets the server protocol state.
+     *
+     * @param serverState the new server protocol state
+     */
+    void setServerState(State serverState);
+
+    /**
+     * Returns the user's protocol version, or null if not set.
      * This is set during the {@link State#HANDSHAKE} state.
      *
-     * @return server protocol version, or -1 if not set
+     * @return protocol version, may be unknown
+     * @see ProtocolVersion#isKnown()
      */
-    int getServerProtocolVersion();
+    ProtocolVersion protocolVersion();
 
-    void setServerProtocolVersion(int serverProtocolVersion);
+    void setProtocolVersion(ProtocolVersion protocolVersion);
+
+    /**
+     * Returns the server protocol version the user is connected to.
+     * This is set during the {@link State#HANDSHAKE} state.
+     *
+     * @return the server protocol version the user is connected to, may be unknown
+     * @see ProtocolVersion#isKnown()
+     */
+    ProtocolVersion serverProtocolVersion();
+
+    void setServerProtocolVersion(ProtocolVersion protocolVersion);
+
+    @Deprecated
+    default int getProtocolVersion() {
+        return protocolVersion() != null ? protocolVersion().getVersion() : -1;
+    }
+
+    @Deprecated
+    default int getServerProtocolVersion() {
+        return serverProtocolVersion() != null ? serverProtocolVersion().getVersion() : -1;
+    }
 
     /**
      * Returns the username associated with this connection.

api/src/main/java/com/viaversion/viaversion/api/connection/StorableObject.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -38,4 +38,7 @@ public interface StorableObject {
     default boolean clearOnServerSwitch() {
         return true;
     }
+
+    default void onRemove() {
+    }
 }

api/src/main/java/com/viaversion/viaversion/api/connection/StoredObject.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/connection/UserConnection.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/data/BiMappings.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/data/BiMappingsBase.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/data/FullMappings.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -27,12 +27,7 @@ import org.checkerframework.checker.nullness.qual.Nullable;
 /**
  * Mappings containing the full string identifier mappings.
  */
-public interface FullMappings extends Mappings {
-
-    @Deprecated
-    default Mappings mappings() {
-        return this;
-    }
+public interface FullMappings extends BiMappings {
 
     /**
      * Returns the unmapped integer id for the given identifier, or -1 if not found.
@@ -54,17 +49,17 @@ public interface FullMappings extends Mappings {
      * Returns the unmapped string identifier for the given mapped id.
      *
      * @param id unmapped id
-     * @return unmapped string identifier
+     * @return unmapped string identifier, or null if out of bounds
      */
-    String identifier(int id);
+    @Nullable String identifier(int id);
 
     /**
      * Returns the mapped string identifier for the given mapped id.
      *
      * @param mappedId mapped id
-     * @return mapped string identifier
+     * @return mapped string identifier, or null if out of bounds
      */
-    String mappedIdentifier(int mappedId);
+    @Nullable String mappedIdentifier(int mappedId);
 
     /**
      * Returns the mapped string identifier for the given unmapped identifier.

api/src/main/java/com/viaversion/viaversion/api/data/FullMappingsBase.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -22,6 +22,7 @@
  */
 package com.viaversion.viaversion.api.data;
 
+import com.google.common.base.Preconditions;
 import com.viaversion.viaversion.util.Key;
 import it.unimi.dsi.fastutil.objects.Object2IntMap;
 import it.unimi.dsi.fastutil.objects.Object2IntOpenHashMap;
@@ -37,6 +38,7 @@ public class FullMappingsBase implements FullMappings {
     private final Mappings mappings;
 
     public FullMappingsBase(final List<String> unmappedIdentifiers, final List<String> mappedIdentifiers, final Mappings mappings) {
+        Preconditions.checkNotNull(mappings, "Mappings cannot be null");
         this.mappings = mappings;
         this.stringToId = toInverseMap(unmappedIdentifiers);
         this.mappedStringToId = toInverseMap(mappedIdentifiers);
@@ -52,11 +54,6 @@ public class FullMappingsBase implements FullMappings {
         this.mappings = mappings;
     }
 
-    @Override
-    public Mappings mappings() {
-        return mappings;
-    }
-
     @Override
     public int id(final String identifier) {
         return stringToId.getInt(Key.stripMinecraftNamespace(identifier));
@@ -69,12 +66,20 @@ public class FullMappingsBase implements FullMappings {
 
     @Override
     public String identifier(final int id) {
+        if (id < 0 || id >= idToString.length) {
+            return null;
+        }
+
         final String identifier = idToString[id];
         return Key.namespaced(identifier);
     }
 
     @Override
     public String mappedIdentifier(final int mappedId) {
+        if (mappedId < 0 || mappedId >= mappedIdToString.length) {
+            return null;
+        }
+
         final String identifier = mappedIdToString[mappedId];
         return Key.namespaced(identifier);
     }

api/src/main/java/com/viaversion/viaversion/api/data/IdentityMappings.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/data/Int2IntMapBiMappings.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/data/Int2IntMapMappings.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/data/IntArrayMappings.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -37,11 +37,6 @@ public class IntArrayMappings implements Mappings {
         return new IntArrayMappings(mappings, mappedIds);
     }
 
-    @Deprecated
-    public static Builder<IntArrayMappings> builder() {
-        return Mappings.builder(IntArrayMappings::new);
-    }
-
     @Override
     public int getNewId(int id) {
         return id >= 0 && id < mappings.length ? mappings[id] : -1;

api/src/main/java/com/viaversion/viaversion/api/data/MappingData.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -79,6 +79,8 @@ public interface MappingData {
      */
     int getNewParticleId(int id);
 
+    int getNewAttributeId(int id);
+
     /**
      * Returns a list of tags to send if present.
      *
@@ -87,8 +89,21 @@ public interface MappingData {
      */
     @Nullable List<TagData> getTags(RegistryType type);
 
+    /**
+     * Returns item mappings.
+     *
+     * @return item mappings
+     */
     @Nullable BiMappings getItemMappings();
 
+    /**
+     * Returns item mappings if they also have identifier data present.
+     *
+     * @return item mappings if they also have identifier data present
+     * @see #getItemMappings()
+     */
+    @Nullable FullMappings getFullItemMappings();
+
     @Nullable ParticleMappings getParticleMappings();
 
     @Nullable Mappings getBlockMappings();
@@ -101,11 +116,19 @@ public interface MappingData {
 
     @Nullable Mappings getStatisticsMappings();
 
+    @Nullable Mappings getMenuMappings();
+
     @Nullable Mappings getEnchantmentMappings();
 
+    @Nullable Mappings getAttributeMappings();
+
+    @Nullable Mappings getPaintingMappings();
+
     @Nullable FullMappings getEntityMappings();
 
     @Nullable FullMappings getArgumentTypeMappings();
 
-    @Nullable Mappings getPaintingMappings();
+    @Nullable FullMappings getRecipeSerializerMappings();
+
+    @Nullable FullMappings getDataComponentSerializerMappings();
 }

api/src/main/java/com/viaversion/viaversion/api/data/MappingDataBase.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -24,7 +24,6 @@ package com.viaversion.viaversion.api.data;
 
 import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import com.github.steveice10.opennbt.tag.builtin.IntArrayTag;
-import com.github.steveice10.opennbt.tag.builtin.ListTag;
 import com.github.steveice10.opennbt.tag.builtin.Tag;
 import com.viaversion.viaversion.api.Via;
 import com.viaversion.viaversion.api.minecraft.RegistryType;
@@ -34,7 +33,6 @@ import java.util.EnumMap;
 import java.util.List;
 import java.util.Map;
 import java.util.logging.Logger;
-import java.util.stream.Collectors;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
 public class MappingDataBase implements MappingData {
@@ -44,6 +42,8 @@ public class MappingDataBase implements MappingData {
     protected BiMappings itemMappings;
     protected FullMappings argumentTypeMappings;
     protected FullMappings entityMappings;
+    protected FullMappings recipeSerializerMappings;
+    protected FullMappings itemDataSerializerMappings;
     protected ParticleMappings particleMappings;
     protected Mappings blockMappings;
     protected Mappings blockStateMappings;
@@ -52,6 +52,8 @@ public class MappingDataBase implements MappingData {
     protected Mappings statisticsMappings;
     protected Mappings enchantmentMappings;
     protected Mappings paintingMappings;
+    protected Mappings menuMappings;
+    protected Mappings attributeMappings;
     protected Map<RegistryType, List<TagData>> tags;
 
     public MappingDataBase(final String unmappedVersion, final String mappedVersion) {
@@ -65,37 +67,42 @@ public class MappingDataBase implements MappingData {
             getLogger().info("Loading " + unmappedVersion + " -> " + mappedVersion + " mappings...");
         }
 
-        final CompoundTag data = readNBTFile("mappings-" + unmappedVersion + "to" + mappedVersion + ".nbt");
+        final CompoundTag data = readMappingsFile("mappings-" + unmappedVersion + "to" + mappedVersion + ".nbt");
         blockMappings = loadMappings(data, "blocks");
         blockStateMappings = loadMappings(data, "blockstates");
         blockEntityMappings = loadMappings(data, "blockentities");
         soundMappings = loadMappings(data, "sounds");
         statisticsMappings = loadMappings(data, "statistics");
+        menuMappings = loadMappings(data, "menus");
         enchantmentMappings = loadMappings(data, "enchantments");
         paintingMappings = loadMappings(data, "paintings");
-        itemMappings = loadBiMappings(data, "items");
+        attributeMappings = loadMappings(data, "attributes");
 
-        final CompoundTag unmappedIdentifierData = MappingDataLoader.loadNBT("identifiers-" + unmappedVersion + ".nbt", true);
-        final CompoundTag mappedIdentifierData = MappingDataLoader.loadNBT("identifiers-" + mappedVersion + ".nbt", true);
+
+        final CompoundTag unmappedIdentifierData = readUnmappedIdentifiersFile("identifiers-" + unmappedVersion + ".nbt");
+        final CompoundTag mappedIdentifierData = readMappedIdentifiersFile("identifiers-" + mappedVersion + ".nbt");
         if (unmappedIdentifierData != null && mappedIdentifierData != null) {
+            itemMappings = loadFullMappings(data, unmappedIdentifierData, mappedIdentifierData, "items");
             entityMappings = loadFullMappings(data, unmappedIdentifierData, mappedIdentifierData, "entities");
             argumentTypeMappings = loadFullMappings(data, unmappedIdentifierData, mappedIdentifierData, "argumenttypes");
+            recipeSerializerMappings = loadFullMappings(data, unmappedIdentifierData, mappedIdentifierData, "recipe_serializers");
+            itemDataSerializerMappings = loadFullMappings(data, unmappedIdentifierData, mappedIdentifierData, "data_component_type");
 
-            final ListTag unmappedParticles = unmappedIdentifierData.get("particles");
-            final ListTag mappedParticles = mappedIdentifierData.get("particles");
+            final List<String> unmappedParticles = identifiersFromGlobalIds(unmappedIdentifierData, "particles");
+            final List<String> mappedParticles = identifiersFromGlobalIds(mappedIdentifierData, "particles");
             if (unmappedParticles != null && mappedParticles != null) {
                 Mappings particleMappings = loadMappings(data, "particles");
                 if (particleMappings == null) {
                     particleMappings = new IdentityMappings(unmappedParticles.size(), mappedParticles.size());
                 }
-
-                final List<String> identifiers = unmappedParticles.getValue().stream().map(t -> (String) t.getValue()).collect(Collectors.toList());
-                final List<String> mappedIdentifiers = mappedParticles.getValue().stream().map(t -> (String) t.getValue()).collect(Collectors.toList());
-                this.particleMappings = new ParticleMappings(identifiers, mappedIdentifiers, particleMappings);
+                this.particleMappings = new ParticleMappings(unmappedParticles, mappedParticles, particleMappings);
             }
+        } else {
+            // Might not have identifiers in older versions
+            itemMappings = loadBiMappings(data, "items");
         }
 
-        final CompoundTag tagsTag = data.get("tags");
+        final CompoundTag tagsTag = data.getCompoundTag("tags");
         if (tagsTag != null) {
             this.tags = new EnumMap<>(RegistryType.class);
             loadTags(RegistryType.ITEM, tagsTag);
@@ -105,16 +112,39 @@ public class MappingDataBase implements MappingData {
         loadExtras(data);
     }
 
-    protected @Nullable CompoundTag readNBTFile(final String name) {
-        return MappingDataLoader.loadNBT(name);
+    protected @Nullable List<String> identifiersFromGlobalIds(final CompoundTag mappingsTag, final String key) {
+        return MappingDataLoader.INSTANCE.identifiersFromGlobalIds(mappingsTag, key);
+    }
+
+    protected @Nullable CompoundTag readMappingsFile(final String name) {
+        return MappingDataLoader.INSTANCE.loadNBT(name);
+    }
+
+    protected @Nullable CompoundTag readUnmappedIdentifiersFile(final String name) {
+        return MappingDataLoader.INSTANCE.loadNBT(name, true);
+    }
+
+    protected @Nullable CompoundTag readMappedIdentifiersFile(final String name) {
+        return MappingDataLoader.INSTANCE.loadNBT(name, true);
     }
 
     protected @Nullable Mappings loadMappings(final CompoundTag data, final String key) {
-        return MappingDataLoader.loadMappings(data, key);
+        return MappingDataLoader.INSTANCE.loadMappings(data, key);
     }
 
-    protected @Nullable FullMappings loadFullMappings(final CompoundTag data, final CompoundTag unmappedIdentifiers, final CompoundTag mappedIdentifiers, final String key) {
-        return MappingDataLoader.loadFullMappings(data, unmappedIdentifiers, mappedIdentifiers, key);
+    protected @Nullable FullMappings loadFullMappings(final CompoundTag data, final CompoundTag unmappedIdentifiersTag, final CompoundTag mappedIdentifiersTag, final String key) {
+        if (!unmappedIdentifiersTag.contains(key) || !mappedIdentifiersTag.contains(key)) {
+            return null;
+        }
+
+        final List<String> unmappedIdentifiers = identifiersFromGlobalIds(unmappedIdentifiersTag, key);
+        final List<String> mappedIdentifiers = identifiersFromGlobalIds(mappedIdentifiersTag, key);
+        Mappings mappings = loadBiMappings(data, key); // Load as bi-mappings to keep the inverse cached
+        if (mappings == null) {
+            mappings = new IdentityMappings(unmappedIdentifiers.size(), mappedIdentifiers.size());
+        }
+
+        return new FullMappingsBase(unmappedIdentifiers, mappedIdentifiers, mappings);
     }
 
     protected @Nullable BiMappings loadBiMappings(final CompoundTag data, final String key) {
@@ -123,7 +153,7 @@ public class MappingDataBase implements MappingData {
     }
 
     private void loadTags(final RegistryType type, final CompoundTag data) {
-        final CompoundTag tag = data.get(type.resourceLocation());
+        final CompoundTag tag = data.getCompoundTag(type.resourceLocation());
         if (tag == null) {
             return;
         }
@@ -162,6 +192,11 @@ public class MappingDataBase implements MappingData {
         return checkValidity(id, particleMappings.getNewId(id), "particles");
     }
 
+    @Override
+    public int getNewAttributeId(final int id) {
+        return checkValidity(id, attributeMappings.getNewId(id), "attributes");
+    }
+
     @Override
     public @Nullable List<TagData> getTags(final RegistryType type) {
         return tags != null ? tags.get(type) : null;
@@ -172,6 +207,14 @@ public class MappingDataBase implements MappingData {
         return itemMappings;
     }
 
+    @Override
+    public @Nullable FullMappings getFullItemMappings() {
+        if (itemMappings instanceof FullMappings) {
+            return (FullMappings) itemMappings;
+        }
+        return null;
+    }
+
     @Override
     public @Nullable ParticleMappings getParticleMappings() {
         return particleMappings;
@@ -202,11 +245,21 @@ public class MappingDataBase implements MappingData {
         return statisticsMappings;
     }
 
+    @Override
+    public @Nullable Mappings getMenuMappings() {
+        return menuMappings;
+    }
+
     @Override
     public @Nullable Mappings getEnchantmentMappings() {
         return enchantmentMappings;
     }
 
+    @Override
+    public @Nullable Mappings getAttributeMappings() {
+        return attributeMappings;
+    }
+
     @Override
     public @Nullable FullMappings getEntityMappings() {
         return entityMappings;
@@ -217,11 +270,21 @@ public class MappingDataBase implements MappingData {
         return argumentTypeMappings;
     }
 
+    @Override
+    public @Nullable FullMappings getDataComponentSerializerMappings() {
+        return itemDataSerializerMappings;
+    }
+
     @Override
     public @Nullable Mappings getPaintingMappings() {
         return paintingMappings;
     }
 
+    @Override
+    public @Nullable FullMappings getRecipeSerializerMappings() {
+        return recipeSerializerMappings;
+    }
+
     protected Logger getLogger() {
         return Via.getPlatform().getLogger();
     }
@@ -236,7 +299,9 @@ public class MappingDataBase implements MappingData {
      */
     protected int checkValidity(final int id, final int mappedId, final String type) {
         if (mappedId == -1) {
-            getLogger().warning(String.format("Missing %s %s for %s %s %d", mappedVersion, type, unmappedVersion, type, id));
+            if (!Via.getConfig().isSuppressConversionWarnings()) {
+                getLogger().warning(String.format("Missing %s %s for %s %s %d", mappedVersion, type, unmappedVersion, type, id));
+            }
             return 0;
         }
         return mappedId;

api/src/main/java/com/viaversion/viaversion/api/data/MappingDataLoader.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -22,12 +22,15 @@
  */
 package com.viaversion.viaversion.api.data;
 
-import com.github.steveice10.opennbt.NBTIO;
 import com.github.steveice10.opennbt.tag.builtin.ByteTag;
 import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import com.github.steveice10.opennbt.tag.builtin.IntArrayTag;
 import com.github.steveice10.opennbt.tag.builtin.IntTag;
 import com.github.steveice10.opennbt.tag.builtin.ListTag;
+import com.github.steveice10.opennbt.tag.builtin.StringTag;
+import com.github.steveice10.opennbt.tag.builtin.Tag;
+import com.github.steveice10.opennbt.tag.io.NBTIO;
+import com.github.steveice10.opennbt.tag.io.TagReader;
 import com.google.common.annotations.Beta;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonElement;
@@ -38,33 +41,76 @@ import com.viaversion.viaversion.api.Via;
 import com.viaversion.viaversion.util.GsonUtil;
 import it.unimi.dsi.fastutil.objects.Object2IntMap;
 import it.unimi.dsi.fastutil.objects.Object2IntOpenHashMap;
+import java.io.BufferedInputStream;
 import java.io.File;
 import java.io.FileReader;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
-import java.util.stream.Collectors;
+import java.util.logging.Logger;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
-public final class MappingDataLoader {
+public class MappingDataLoader {
 
+    public static final MappingDataLoader INSTANCE = new MappingDataLoader(MappingDataLoader.class, "assets/viaversion/data/");
+    public static final TagReader<CompoundTag> MAPPINGS_READER = NBTIO.reader(CompoundTag.class).named();
+    private static final Map<String, String[]> GLOBAL_IDENTIFIER_INDEXES = new HashMap<>();
     private static final byte DIRECT_ID = 0;
     private static final byte SHIFTS_ID = 1;
     private static final byte CHANGES_ID = 2;
     private static final byte IDENTITY_ID = 3;
-    private static final Map<String, CompoundTag> MAPPINGS_CACHE = new HashMap<>();
-    private static boolean cacheValid = true;
 
-    @Deprecated/*(forRemoval = true)*/
-    public static void enableMappingsCache() {
-        // Always enabled
+    private final Map<String, CompoundTag> mappingsCache = new HashMap<>();
+    private final Class<?> dataLoaderClass;
+    private final String dataPath;
+    private boolean cacheValid = true;
+
+    public MappingDataLoader(final Class<?> dataLoaderClass, final String dataPath) {
+        this.dataLoaderClass = dataLoaderClass;
+        this.dataPath = dataPath;
     }
 
-    public static void clearCache() {
-        MAPPINGS_CACHE.clear();
+    public static void loadGlobalIdentifiers() {
+        // Load in a file with all the identifiers we need, so that we don't need to duplicate them
+        // for every single new version with only a couple of changes in them.
+        final CompoundTag globalIdentifiers = INSTANCE.loadNBT("identifier-table.nbt");
+        for (final Map.Entry<String, Tag> entry : globalIdentifiers.entrySet()) {
+            //noinspection unchecked
+            final ListTag<StringTag> value = (ListTag<StringTag>) entry.getValue();
+            final String[] array = new String[value.size()];
+            for (int i = 0, size = value.size(); i < size; i++) {
+                array[i] = value.get(i).getValue();
+            }
+            GLOBAL_IDENTIFIER_INDEXES.put(entry.getKey(), array);
+        }
+    }
+
+    /**
+     * Returns the global id of the identifier in the registry.
+     *
+     * @param registry registry key
+     * @param globalId global id
+     * @return identifier
+     * @throws IllegalArgumentException if the registry key is invalid
+     */
+    public @Nullable String identifierFromGlobalId(final String registry, final int globalId) {
+        final String[] array = GLOBAL_IDENTIFIER_INDEXES.get(registry);
+        if (array == null) {
+            throw new IllegalArgumentException("Unknown global identifier key: " + registry);
+        }
+        if (globalId < 0 || globalId >= array.length) {
+            throw new IllegalArgumentException("Unknown global identifier index: " + globalId);
+        }
+        return array[globalId];
+    }
+
+    public void clearCache() {
+        mappingsCache.clear();
         cacheValid = false;
     }
 
@@ -73,8 +119,8 @@ public final class MappingDataLoader {
      *
      * @return loaded json object, or null if not found or invalid
      */
-    public static @Nullable JsonObject loadFromDataDir(final String name) {
-        final File file = new File(Via.getPlatform().getDataFolder(), name);
+    public @Nullable JsonObject loadFromDataDir(final String name) {
+        final File file = new File(getDataFolder(), name);
         if (!file.exists()) {
             return loadData(name);
         }
@@ -84,7 +130,7 @@ public final class MappingDataLoader {
             return GsonUtil.getGson().fromJson(reader, JsonObject.class);
         } catch (final JsonSyntaxException e) {
             // Users might mess up the format, so let's catch the syntax error
-            Via.getPlatform().getLogger().warning(name + " is badly formatted!");
+            getLogger().warning(name + " is badly formatted!");
             throw new RuntimeException(e);
         } catch (final IOException | JsonIOException e) {
             throw new RuntimeException(e);
@@ -96,7 +142,7 @@ public final class MappingDataLoader {
      *
      * @return loaded json object from bundled resources if present
      */
-    public static @Nullable JsonObject loadData(final String name) {
+    public @Nullable JsonObject loadData(final String name) {
         final InputStream stream = getResource(name);
         if (stream == null) {
             return null;
@@ -109,12 +155,12 @@ public final class MappingDataLoader {
         }
     }
 
-    public static @Nullable CompoundTag loadNBT(final String name, final boolean cache) {
+    public @Nullable CompoundTag loadNBT(final String name, final boolean cache) {
         if (!cacheValid) {
             return loadNBTFromFile(name);
         }
 
-        CompoundTag data = MAPPINGS_CACHE.get(name);
+        CompoundTag data = mappingsCache.get(name);
         if (data != null) {
             return data;
         }
@@ -122,29 +168,29 @@ public final class MappingDataLoader {
         data = loadNBTFromFile(name);
 
         if (cache && data != null) {
-            MAPPINGS_CACHE.put(name, data);
+            mappingsCache.put(name, data);
         }
         return data;
     }
 
-    public static @Nullable CompoundTag loadNBT(final String name) {
+    public @Nullable CompoundTag loadNBT(final String name) {
         return loadNBT(name, false);
     }
 
-    private static @Nullable CompoundTag loadNBTFromFile(final String name) {
+    public @Nullable CompoundTag loadNBTFromFile(final String name) {
         final InputStream resource = getResource(name);
         if (resource == null) {
             return null;
         }
 
-        try (final InputStream stream = resource) {
-            return NBTIO.readTag(stream);
+        try (final InputStream stream = new BufferedInputStream(resource)) {
+            return MAPPINGS_READER.read(stream);
         } catch (final IOException e) {
             throw new RuntimeException(e);
         }
     }
 
-    public static @Nullable Mappings loadMappings(final CompoundTag mappingsTag, final String key) {
+    public @Nullable Mappings loadMappings(final CompoundTag mappingsTag, final String key) {
         return loadMappings(mappingsTag, key, size -> {
             final int[] array = new int[size];
             Arrays.fill(array, -1);
@@ -153,29 +199,29 @@ public final class MappingDataLoader {
     }
 
     @Beta
-    public static <M extends Mappings, V> @Nullable Mappings loadMappings(
-            final CompoundTag mappingsTag,
-            final String key,
-            final MappingHolderSupplier<V> holderSupplier,
-            final AddConsumer<V> addConsumer,
-            final MappingsSupplier<M, V> mappingsSupplier
+    public <M extends Mappings, V> @Nullable Mappings loadMappings(
+        final CompoundTag mappingsTag,
+        final String key,
+        final MappingHolderSupplier<V> holderSupplier,
+        final AddConsumer<V> addConsumer,
+        final MappingsSupplier<M, V> mappingsSupplier
     ) {
-        final CompoundTag tag = mappingsTag.get(key);
+        final CompoundTag tag = mappingsTag.getCompoundTag(key);
         if (tag == null) {
             return null;
         }
 
-        final ByteTag serializationStragetyTag = tag.get("id");
-        final IntTag mappedSizeTag = tag.get("mappedSize");
+        final ByteTag serializationStragetyTag = tag.getUnchecked("id");
+        final IntTag mappedSizeTag = tag.getUnchecked("mappedSize");
         final byte strategy = serializationStragetyTag.asByte();
         final V mappings;
         if (strategy == DIRECT_ID) {
-            final IntArrayTag valuesTag = tag.get("val");
+            final IntArrayTag valuesTag = tag.getIntArrayTag("val");
             return IntArrayMappings.of(valuesTag.getValue(), mappedSizeTag.asInt());
         } else if (strategy == SHIFTS_ID) {
-            final IntArrayTag shiftsAtTag = tag.get("at");
-            final IntArrayTag shiftsTag = tag.get("to");
-            final IntTag sizeTag = tag.get("size");
+            final IntArrayTag shiftsAtTag = tag.getIntArrayTag("at");
+            final IntArrayTag shiftsTag = tag.getIntArrayTag("to");
+            final IntTag sizeTag = tag.getUnchecked("size");
             final int[] shiftsAt = shiftsAtTag.getValue();
             final int[] shiftsTo = shiftsTag.getValue();
             final int size = sizeTag.asInt();
@@ -199,9 +245,9 @@ public final class MappingDataLoader {
                 }
             }
         } else if (strategy == CHANGES_ID) {
-            final IntArrayTag changesAtTag = tag.get("at");
-            final IntArrayTag valuesTag = tag.get("val");
-            final IntTag sizeTag = tag.get("size");
+            final IntArrayTag changesAtTag = tag.getIntArrayTag("at");
+            final IntArrayTag valuesTag = tag.getIntArrayTag("val");
+            final IntTag sizeTag = tag.getUnchecked("size");
             final boolean fillBetween = tag.get("nofill") == null;
             final int[] changesAt = changesAtTag.getValue();
             final int[] values = valuesTag.getValue();
@@ -221,7 +267,7 @@ public final class MappingDataLoader {
                 addConsumer.addTo(mappings, id, values[i]);
             }
         } else if (strategy == IDENTITY_ID) {
-            final IntTag sizeTag = tag.get("size");
+            final IntTag sizeTag = tag.getUnchecked("size");
             return new IdentityMappings(sizeTag.asInt(), mappedSizeTag.asInt());
         } else {
             throw new IllegalArgumentException("Unknown serialization strategy: " + strategy);
@@ -229,73 +275,17 @@ public final class MappingDataLoader {
         return mappingsSupplier.create(mappings, mappedSizeTag.asInt());
     }
 
-    public static FullMappings loadFullMappings(final CompoundTag mappingsTag, final CompoundTag unmappedIdentifiers, final CompoundTag mappedIdentifiers, final String key) {
-        final ListTag unmappedElements = unmappedIdentifiers.get(key);
-        final ListTag mappedElements = mappedIdentifiers.get(key);
-        if (unmappedElements == null || mappedElements == null) {
+    public @Nullable List<String> identifiersFromGlobalIds(final CompoundTag mappingsTag, final String key) {
+        final Mappings mappings = loadMappings(mappingsTag, key);
+        if (mappings == null) {
             return null;
         }
 
-        Mappings mappings = loadMappings(mappingsTag, key);
-        if (mappings == null) {
-            mappings = new IdentityMappings(unmappedElements.size(), mappedElements.size());
-        }
-
-        return new FullMappingsBase(
-                unmappedElements.getValue().stream().map(t -> (String) t.getValue()).collect(Collectors.toList()),
-                mappedElements.getValue().stream().map(t -> (String) t.getValue()).collect(Collectors.toList()),
-                mappings
-        );
-    }
-
-    @Deprecated
-    public static void mapIdentifiers(final int[] output, final JsonObject unmappedIdentifiers, final JsonObject mappedIdentifiers, @Nullable final JsonObject diffIdentifiers, final boolean warnOnMissing) {
-        final Object2IntMap<String> newIdentifierMap = MappingDataLoader.indexedObjectToMap(mappedIdentifiers);
-        for (final Map.Entry<String, JsonElement> entry : unmappedIdentifiers.entrySet()) {
-            final int id = Integer.parseInt(entry.getKey());
-            final int mappedId = mapIdentifierEntry(id, entry.getValue().getAsString(), newIdentifierMap, diffIdentifiers, warnOnMissing);
-            if (mappedId != -1) {
-                output[id] = mappedId;
-            }
-        }
-    }
-
-    private static int mapIdentifierEntry(final int id, final String val, final Object2IntMap<String> mappedIdentifiers, @Nullable final JsonObject diffIdentifiers, final boolean warnOnMissing) {
-        int mappedId = mappedIdentifiers.getInt(val);
-        if (mappedId == -1) {
-            // Search in diff mappings
-            if (diffIdentifiers != null) {
-                JsonElement diffElement = diffIdentifiers.get(val);
-                if (diffElement != null || (diffElement = diffIdentifiers.get(Integer.toString(id))) != null) {
-                    final String mappedName = diffElement.getAsString();
-                    if (mappedName.isEmpty()) {
-                        return -1; // "empty" remaps without warnings
-                    }
-
-                    mappedId = mappedIdentifiers.getInt(mappedName);
-
-                }
-            }
-            if (mappedId == -1) {
-                if (warnOnMissing && !Via.getConfig().isSuppressConversionWarnings() || Via.getManager().isDebug()) {
-                    Via.getPlatform().getLogger().warning("No key for " + val + " :( ");
-                }
-                return -1;
-            }
-        }
-        return mappedId;
-    }
-
-    @Deprecated
-    public static void mapIdentifiers(final int[] output, final JsonArray unmappedIdentifiers, final JsonArray mappedIdentifiers, @Nullable final JsonObject diffIdentifiers, final boolean warnOnMissing) {
-        final Object2IntMap<String> newIdentifierMap = MappingDataLoader.arrayToMap(mappedIdentifiers);
-        for (int id = 0; id < unmappedIdentifiers.size(); id++) {
-            final JsonElement unmappedIdentifier = unmappedIdentifiers.get(id);
-            final int mappedId = mapIdentifierEntry(id, unmappedIdentifier.getAsString(), newIdentifierMap, diffIdentifiers, warnOnMissing);
-            if (mappedId != -1) {
-                output[id] = mappedId;
-            }
+        final List<String> identifiers = new ArrayList<>(mappings.size());
+        for (int i = 0; i < mappings.size(); i++) {
+            identifiers.add(identifierFromGlobalId(key, mappings.getNewId(i)));
         }
+        return identifiers;
     }
 
     /**
@@ -304,7 +294,7 @@ public final class MappingDataLoader {
      * @param object json object
      * @return map with indexes hashed by their id value
      */
-    public static Object2IntMap<String> indexedObjectToMap(final JsonObject object) {
+    public Object2IntMap<String> indexedObjectToMap(final JsonObject object) {
         final Object2IntMap<String> map = new Object2IntOpenHashMap<>(object.size(), .99F);
         map.defaultReturnValue(-1);
         for (final Map.Entry<String, JsonElement> entry : object.entrySet()) {
@@ -319,7 +309,7 @@ public final class MappingDataLoader {
      * @param array json array
      * @return map with indexes hashed by their id value
      */
-    public static Object2IntMap<String> arrayToMap(final JsonArray array) {
+    public Object2IntMap<String> arrayToMap(final JsonArray array) {
         final Object2IntMap<String> map = new Object2IntOpenHashMap<>(array.size(), .99F);
         map.defaultReturnValue(-1);
         for (int i = 0; i < array.size(); i++) {
@@ -328,8 +318,16 @@ public final class MappingDataLoader {
         return map;
     }
 
-    public static @Nullable InputStream getResource(final String name) {
-        return MappingDataLoader.class.getClassLoader().getResourceAsStream("assets/viaversion/data/" + name);
+    public Logger getLogger() {
+        return Via.getPlatform().getLogger();
+    }
+
+    public File getDataFolder() {
+        return Via.getPlatform().getDataFolder();
+    }
+
+    public @Nullable InputStream getResource(final String name) {
+        return dataLoaderClass.getClassLoader().getResourceAsStream(dataPath + name);
     }
 
     @FunctionalInterface

api/src/main/java/com/viaversion/viaversion/api/data/Mappings.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -22,11 +22,6 @@
  */
 package com.viaversion.viaversion.api.data;
 
-import com.google.gson.JsonArray;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonObject;
-import java.util.Arrays;
-
 public interface Mappings {
 
     /**
@@ -89,123 +84,4 @@ public interface Mappings {
      * @return mappings with keys and values swapped
      */
     Mappings inverse();
-
-    static <T extends Mappings> Builder<T> builder(final MappingsSupplier<T> supplier) {
-        return new Builder<>(supplier);
-    }
-
-    @FunctionalInterface
-    interface MappingsSupplier<T extends Mappings> {
-
-        T supply(int[] mappings, int mappedIds);
-    }
-
-    @Deprecated
-    class Builder<T extends Mappings> {
-
-        protected final MappingsSupplier<T> supplier;
-        protected JsonElement unmapped;
-        protected JsonElement mapped;
-        protected JsonObject diffMappings;
-        protected int mappedSize = -1;
-        protected int size = -1;
-        protected boolean warnOnMissing = true;
-
-        protected Builder(final MappingsSupplier<T> supplier) {
-            this.supplier = supplier;
-        }
-
-        /**
-         * Sets a custom entry size different to the size of the unmapped collection.
-         *
-         * @param size custom entry size
-         * @return self
-         */
-        public Builder<T> customEntrySize(final int size) {
-            this.size = size;
-            return this;
-        }
-
-        /**
-         * Sets a custom entry mapped ids count different to the size of the mapped collection.
-         *
-         * @param size custom mapped id count
-         * @return self
-         */
-        public Builder<T> customMappedSize(final int size) {
-            this.mappedSize = size;
-            return this;
-        }
-
-        /**
-         * Sets whether warnings should be logged for missing mapped ids.
-         *
-         * @param warnOnMissing whether warnings should be logged for missing mapped ids
-         * @return self
-         */
-        public Builder<T> warnOnMissing(final boolean warnOnMissing) {
-            this.warnOnMissing = warnOnMissing;
-            return this;
-        }
-
-        public Builder<T> unmapped(final JsonArray unmappedArray) {
-            this.unmapped = unmappedArray;
-            return this;
-        }
-
-        public Builder<T> unmapped(final JsonObject unmappedObject) {
-            this.unmapped = unmappedObject;
-            return this;
-        }
-
-        public Builder<T> mapped(final JsonArray mappedArray) {
-            this.mapped = mappedArray;
-            return this;
-        }
-
-        public Builder<T> mapped(final JsonObject mappedObject) {
-            this.mapped = mappedObject;
-            return this;
-        }
-
-        public Builder<T> diffMappings(final JsonObject diffMappings) {
-            this.diffMappings = diffMappings;
-            return this;
-        }
-
-        public T build() {
-            final int size = this.size != -1 ? this.size : size(unmapped);
-            final int mappedSize = this.mappedSize != -1 ? this.mappedSize : size(mapped);
-            final int[] mappings = new int[size];
-            Arrays.fill(mappings, -1);
-
-            // Do conversion if one is an array and the other an object, otherwise directly map
-            if (unmapped.isJsonArray()) {
-                if (mapped.isJsonObject()) {
-                    MappingDataLoader.mapIdentifiers(mappings, toJsonObject(unmapped.getAsJsonArray()), mapped.getAsJsonObject(), diffMappings, warnOnMissing);
-                } else {
-                    MappingDataLoader.mapIdentifiers(mappings, unmapped.getAsJsonArray(), mapped.getAsJsonArray(), diffMappings, warnOnMissing);
-                }
-            } else if (mapped.isJsonArray()) {
-                MappingDataLoader.mapIdentifiers(mappings, unmapped.getAsJsonObject(), toJsonObject(mapped.getAsJsonArray()), diffMappings, warnOnMissing);
-            } else {
-                MappingDataLoader.mapIdentifiers(mappings, unmapped.getAsJsonObject(), mapped.getAsJsonObject(), diffMappings, warnOnMissing);
-            }
-
-            return supplier.supply(mappings, mappedSize);
-        }
-
-        protected int size(final JsonElement element) {
-            return element.isJsonObject() ? element.getAsJsonObject().size() : element.getAsJsonArray().size();
-        }
-
-        protected JsonObject toJsonObject(final JsonArray array) {
-            final JsonObject object = new JsonObject();
-            for (int i = 0; i < array.size(); i++) {
-                final JsonElement element = array.get(i);
-                object.add(Integer.toString(i), element);
-            }
-            return object;
-        }
-    }
 }

api/src/main/java/com/viaversion/viaversion/api/data/ParticleMappings.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -35,6 +35,7 @@ public class ParticleMappings extends FullMappingsBase {
         addBlockParticle("block");
         addBlockParticle("falling_dust");
         addBlockParticle("block_marker");
+        addBlockParticle("dust_pillar");
         addItemParticle("item");
     }
 
@@ -55,19 +56,4 @@ public class ParticleMappings extends FullMappingsBase {
     public boolean isItemParticle(final int id) {
         return itemParticleIds.contains(id);
     }
-
-    @Deprecated/*(forRemoval = true)*/
-    public int getBlockId() {
-        return id("block");
-    }
-
-    @Deprecated/*(forRemoval = true)*/
-    public int getFallingDustId() {
-        return id("falling_dust");
-    }
-
-    @Deprecated/*(forRemoval = true)*/
-    public int getItemId() {
-        return id("item");
-    }
 }

api/src/main/java/com/viaversion/viaversion/api/data/entity/ClientEntityIdChangeListener.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/data/entity/DimensionData.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -24,6 +24,8 @@ package com.viaversion.viaversion.api.data.entity;
 
 public interface DimensionData {
 
+    int id();
+
     int minY();
 
     int height();

api/src/main/java/com/viaversion/viaversion/api/data/entity/EntityTracker.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -34,6 +34,7 @@ public interface EntityTracker {
      *
      * @return user connection
      */
+    @Deprecated
     UserConnection user();
 
     /**
@@ -87,7 +88,7 @@ public interface EntityTracker {
      *
      * @param id entity id
      * @return stored entity data if an entity with the id is tracked, else null
-     * @throws IllegalArgumentException if entitiy data storage has not been enabled via the implementation
+     * @throws IllegalArgumentException if entity data storage has not been enabled via the implementation
      */
     @Nullable StoredEntityData entityData(int id);
 
@@ -96,7 +97,7 @@ public interface EntityTracker {
      *
      * @param id entity id
      * @return stored entity data if it has previously been initialized by {@link #entityData(int)}
-     * @throws IllegalArgumentException if entitiy data storage has not been enabled via the implementation
+     * @throws IllegalArgumentException if entity data storage has not been enabled via the implementation
      */
     @Nullable StoredEntityData entityDataIfPresent(int id);
 
@@ -165,6 +166,8 @@ public interface EntityTracker {
 
     @Nullable DimensionData dimensionData(String dimension);
 
+    @Nullable DimensionData dimensionData(int dimensionId);
+
     void setDimensions(Map<String, DimensionData> dimensions);
 
     /**

api/src/main/java/com/viaversion/viaversion/api/data/entity/StoredEntityData.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/data/entity/TrackedEntity.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/debug/DebugHandler.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,9 +23,11 @@
 package com.viaversion.viaversion.api.debug;
 
 import com.google.common.annotations.Beta;
+import com.viaversion.viaversion.api.Via;
 import com.viaversion.viaversion.api.protocol.packet.Direction;
 import com.viaversion.viaversion.api.protocol.packet.PacketType;
 import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
+import java.util.logging.Level;
 
 @Beta
 public interface DebugHandler {
@@ -102,4 +104,16 @@ public interface DebugHandler {
             addPacketTypeToLog(packetType);
         }
     }
+
+    /**
+     * Logs an error if debug mode is enabled or error suppression is disabled.
+     *
+     * @param error error message
+     * @param t     thrown exception
+     */
+    default void error(final String error, final Throwable t) {
+        if (!Via.getConfig().isSuppressConversionWarnings() || enabled()) {
+            Via.getPlatform().getLogger().log(Level.SEVERE, error, t);
+        }
+    }
 }

api/src/main/java/com/viaversion/viaversion/api/legacy/LegacyViaAPI.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/legacy/bossbar/BossBar.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -66,7 +66,7 @@ public interface BossBar {
     BossColor getColor();
 
     /**
-     * Yay colors!
+     * Yay, colors!
      *
      * @param color Whatever color you want!
      * @return The BossBar object

api/src/main/java/com/viaversion/viaversion/api/legacy/bossbar/BossColor.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/legacy/bossbar/BossFlag.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/legacy/bossbar/BossStyle.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/BlockChangeRecord.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/BlockChangeRecord1_16_2.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/BlockChangeRecord1_8.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/BlockFace.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/ClientWorld.java

@@ -0,0 +1,48 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2024 ViaVersion and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.viaversion.viaversion.api.minecraft;
+
+import com.viaversion.viaversion.api.connection.StorableObject;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+/**
+ * Stored up until 1.14 to be used in chunk sending.
+ */
+public class ClientWorld implements StorableObject {
+    private Environment environment;
+
+    public ClientWorld() {
+    }
+
+    public ClientWorld(final Environment environment) {
+        this.environment = environment;
+    }
+
+    public @Nullable Environment getEnvironment() {
+        return environment;
+    }
+
+    public void setEnvironment(final int environmentId) {
+        this.environment = Environment.getEnvironmentById(environmentId);
+    }
+}

api/src/main/java/com/viaversion/viaversion/api/minecraft/Environment.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/EulerAngle.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/GameProfile.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -20,68 +20,56 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.viaversion.viaversion.api.type.types;
+package com.viaversion.viaversion.api.minecraft;
 
-import com.viaversion.viaversion.api.type.Type;
-import java.util.ArrayList;
-import java.util.List;
+import java.util.UUID;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
-public class Particle {
-    private List<ParticleData> arguments = new ArrayList<>(4);
-    private int id;
+public final class GameProfile {
 
-    public Particle(int id) {
+    private final String name;
+    private final UUID id;
+    private final Property[] properties;
+
+    public GameProfile(@Nullable final String name, @Nullable final UUID id, final Property[] properties) {
+        this.name = name;
         this.id = id;
+        this.properties = properties;
     }
 
-    public int getId() {
+    public @Nullable String name() {
+        return name;
+    }
+
+    public @Nullable UUID id() {
         return id;
     }
 
-    public void setId(int id) {
-        this.id = id;
+    public Property[] properties() {
+        return properties;
     }
 
-    public List<ParticleData> getArguments() {
-        return arguments;
-    }
+    public static final class Property {
+        private final String name;
+        private final String value;
+        private final String signature;
 
-    @Deprecated/*(forRemoval = true)*/
-    public void setArguments(List<ParticleData> arguments) {
-        this.arguments = arguments;
-    }
-
-    public <T> void add(Type<T> type, T value) {
-        arguments.add(new ParticleData(type, value));
-    }
-
-    public static class ParticleData {
-        private Type type;
-        private Object value;
-
-        public ParticleData(Type type, Object value) {
-            this.type = type;
+        public Property(final String name, final String value, @Nullable final String signature) {
+            this.name = name;
             this.value = value;
+            this.signature = signature;
         }
 
-        public Type getType() {
-            return type;
+        public String name() {
+            return name;
         }
 
-        public void setType(Type type) {
-            this.type = type;
-        }
-
-        public Object getValue() {
+        public String value() {
             return value;
         }
 
-        public <T> T get() {
-            return (T) value;
-        }
-
-        public void setValue(Object value) {
-            this.value = value;
+        public @Nullable String signature() {
+            return signature;
         }
     }
 }

api/src/main/java/com/viaversion/viaversion/api/minecraft/GlobalPosition.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/Holder.java

@@ -0,0 +1,82 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2024 ViaVersion and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.viaversion.viaversion.api.minecraft;
+
+public interface Holder<T> {
+
+    /**
+     * Returns an indirect id holder.
+     *
+     * @param id  the id
+     * @param <T> the type of the value
+     * @return a new holder with the given id
+     * @throws IllegalArgumentException if the id is negative
+     */
+    static <T> Holder<T> of(final int id) {
+        return new HolderImpl<>(id);
+    }
+
+    /**
+     * Returns a direct value holder.
+     *
+     * @param value the value
+     * @param <T>   the type of the value
+     * @return a new direct holder
+     */
+    static <T> Holder<T> of(final T value) {
+        return new HolderImpl<>(value);
+    }
+
+    /**
+     * Returns true if this holder is backed by a direct value.
+     *
+     * @return true if the holder is direct
+     * @see #hasId()
+     */
+    boolean isDirect();
+
+    /**
+     * Returns true if this holder has an id.
+     *
+     * @return true if this holder has an id
+     * @see #isDirect()
+     */
+    boolean hasId();
+
+    /**
+     * Returns the value of this holder.
+     *
+     * @return the value of this holder
+     * @throws IllegalArgumentException if this holder is not direct
+     * @see #isDirect()
+     */
+    T value();
+
+    /**
+     * Returns the id of this holder, or -1 if this holder is direct.
+     *
+     * @return the id of this holder, or -1 if this holder is direct
+     * @see #hasId()
+     */
+    int id();
+}

api/src/main/java/com/viaversion/viaversion/api/minecraft/HolderImpl.java

@@ -0,0 +1,63 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2024 ViaVersion and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.viaversion.viaversion.api.minecraft;
+
+import com.google.common.base.Preconditions;
+
+final class HolderImpl<T> implements Holder<T> {
+
+    private final T value;
+    private final int id;
+
+    HolderImpl(final int id) {
+        Preconditions.checkArgument(id >= 0, "id cannot be negative");
+        this.value = null;
+        this.id = id;
+    }
+
+    HolderImpl(final T value) {
+        this.value = value;
+        this.id = -1;
+    }
+
+    @Override
+    public boolean isDirect() {
+        return id == -1;
+    }
+
+    @Override
+    public boolean hasId() {
+        return id != -1;
+    }
+
+    @Override
+    public T value() {
+        Preconditions.checkArgument(isDirect(), "Holder is not direct");
+        return value;
+    }
+
+    @Override
+    public int id() {
+        return id;
+    }
+}

api/src/main/java/com/viaversion/viaversion/api/minecraft/HolderSet.java

@@ -0,0 +1,79 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2024 ViaVersion and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.viaversion.viaversion.api.minecraft;
+
+/**
+ * Set of ids that either holds a string tag key or an array of ids.
+ */
+public interface HolderSet {
+
+    /**
+     * Creates a new holder set for the given tag.
+     *
+     * @param tagKey the tag key
+     * @return a new holder set
+     */
+    static HolderSet of(final String tagKey) {
+        return new HolderSetImpl(tagKey);
+    }
+
+    /**
+     * Creates a new holder set for the given ids.
+     *
+     * @param ids the direct ids
+     * @return a new holder set
+     */
+    static HolderSet of(final int[] ids) {
+        return new HolderSetImpl(ids);
+    }
+
+    /**
+     * Gets the tag key.
+     *
+     * @return the tag key
+     * @see #hasTagKey()
+     */
+    String tagKey();
+
+    /**
+     * Returns whether this holder set has a tag key.
+     *
+     * @return true if this holder set has a tag key, false if it has direct ids
+     */
+    boolean hasTagKey();
+
+    /**
+     * Gets the direct ids.
+     *
+     * @return direct ids
+     * @see #hasIds()
+     */
+    int[] ids();
+
+    /**
+     * Returns whether this holder set has direct ids.
+     *
+     * @return true if this holder set has direct ids, false if it has a tag key
+     */
+    boolean hasIds();
+}

api/src/main/java/com/viaversion/viaversion/api/minecraft/HolderSetImpl.java

@@ -0,0 +1,56 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2024 ViaVersion and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.viaversion.viaversion.api.minecraft;
+
+import com.viaversion.viaversion.util.EitherImpl;
+
+final class HolderSetImpl extends EitherImpl<String, int[]> implements HolderSet {
+
+    HolderSetImpl(final String tagKey) {
+        super(tagKey, null);
+    }
+
+    HolderSetImpl(final int[] ids) {
+        super(null, ids);
+    }
+
+    @Override
+    public String tagKey() {
+        return left();
+    }
+
+    @Override
+    public boolean hasTagKey() {
+        return isLeft();
+    }
+
+    @Override
+    public int[] ids() {
+        return right();
+    }
+
+    @Override
+    public boolean hasIds() {
+        return isRight();
+    }
+}

api/src/main/java/com/viaversion/viaversion/api/minecraft/Particle.java

@@ -0,0 +1,125 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2024 ViaVersion and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.viaversion.viaversion.api.minecraft;
+
+import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
+import com.viaversion.viaversion.api.type.Type;
+import com.viaversion.viaversion.util.IdHolder;
+import io.netty.buffer.ByteBuf;
+import java.util.ArrayList;
+import java.util.List;
+
+public final class Particle implements IdHolder {
+    private final List<ParticleData<?>> arguments = new ArrayList<>(4);
+    private int id;
+
+    public Particle(final int id) {
+        this.id = id;
+    }
+
+    @Deprecated
+    public int getId() {
+        return id;
+    }
+
+    @Override
+    public int id() {
+        return id;
+    }
+
+    public void setId(final int id) {
+        this.id = id;
+    }
+
+    public <T> ParticleData<T> getArgument(final int index) {
+        //noinspection unchecked
+        return (ParticleData<T>) arguments.get(index);
+    }
+
+    public <T> ParticleData<T> removeArgument(final int index) {
+        //noinspection unchecked
+        return (ParticleData<T>) arguments.remove(index);
+    }
+
+    public List<ParticleData<?>> getArguments() {
+        return arguments;
+    }
+
+    public <T> void add(final Type<T> type, final T value) {
+        arguments.add(new ParticleData<>(type, value));
+    }
+
+    public <T> void add(final int index, final Type<T> type, final T value) {
+        arguments.add(index, new ParticleData<>(type, value));
+    }
+
+    public <T> void set(final int index, final Type<T> type, final T value) {
+        arguments.set(index, new ParticleData<>(type, value));
+    }
+
+    @Override
+    public String toString() {
+        return "Particle{" +
+            "arguments=" + arguments +
+            ", id=" + id +
+            '}';
+    }
+
+    public static final class ParticleData<T> {
+        private final Type<T> type;
+        private T value;
+
+        public ParticleData(final Type<T> type, final T value) {
+            this.type = type;
+            this.value = value;
+        }
+
+        public Type<T> getType() {
+            return type;
+        }
+
+        public T getValue() {
+            return value;
+        }
+
+        public void setValue(final T value) {
+            this.value = value;
+        }
+
+        public void write(final ByteBuf buf) throws Exception {
+            type.write(buf, value);
+        }
+
+        public void write(final PacketWrapper wrapper) {
+            wrapper.write(type, value);
+        }
+
+        @Override
+        public String toString() {
+            return "ParticleData{" +
+                    "type=" + type +
+                    ", value=" + value +
+                    '}';
+        }
+    }
+}

api/src/main/java/com/viaversion/viaversion/api/minecraft/PlayerMessageSignature.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/Position.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/Position3d.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/ProfileKey.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/Quaternion.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -50,4 +50,14 @@ public final class Quaternion {
     public float w() {
         return w;
     }
+
+    @Override
+    public String toString() {
+        return "Quaternion{" +
+                "x=" + x +
+                ", y=" + y +
+                ", z=" + z +
+                ", w=" + w +
+                '}';
+    }
 }

api/src/main/java/com/viaversion/viaversion/api/minecraft/RegistryEntry.java

@@ -0,0 +1,48 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2024 ViaVersion and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.viaversion.viaversion.api.minecraft;
+
+import com.github.steveice10.opennbt.tag.builtin.Tag;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+public final class RegistryEntry {
+    private final String key;
+    private final Tag tag;
+
+    public RegistryEntry(String key, @Nullable Tag tag) {
+        this.key = key;
+        this.tag = tag;
+    }
+
+    public String key() {
+        return key;
+    }
+
+    public @Nullable Tag tag() {
+        return tag;
+    }
+
+    public RegistryEntry withKey(final String key) {
+        return new RegistryEntry(key, tag != null ? tag.copy() : null);
+    }
+}

api/src/main/java/com/viaversion/viaversion/api/minecraft/RegistryType.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -57,11 +57,6 @@ public enum RegistryType {
         this.resourceLocation = resourceLocation;
     }
 
-    @Deprecated/*(forRemoval = true)*/
-    public String getResourceLocation() {
-        return resourceLocation;
-    }
-
     public String resourceLocation() {
         return resourceLocation;
     }

api/src/main/java/com/viaversion/viaversion/api/minecraft/SoundEvent.java

@@ -0,0 +1,48 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2024 ViaVersion and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.viaversion.viaversion.api.minecraft;
+
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+public final class SoundEvent {
+
+    private final String identifier;
+    private final Float fixedRange;
+
+    public SoundEvent(final String identifier, @Nullable final Float fixedRange) {
+        this.identifier = identifier;
+        this.fixedRange = fixedRange;
+    }
+
+    public String identifier() {
+        return identifier;
+    }
+
+    public @Nullable Float fixedRange() {
+        return fixedRange;
+    }
+
+    public SoundEvent withIdentifier(final String identifier) {
+        return new SoundEvent(identifier, this.fixedRange);
+    }
+}

api/src/main/java/com/viaversion/viaversion/api/minecraft/TagData.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -22,6 +22,8 @@
  */
 package com.viaversion.viaversion.api.minecraft;
 
+import java.util.Arrays;
+
 public final class TagData {
     private final String identifier;
     private final int[] entries;
@@ -38,4 +40,12 @@ public final class TagData {
     public int[] entries() {
         return entries;
     }
+
+    @Override
+    public String toString() {
+        return "TagData{" +
+            "identifier='" + identifier + '\'' +
+            ", entries=" + Arrays.toString(entries) +
+            '}';
+    }
 }

api/src/main/java/com/viaversion/viaversion/api/minecraft/Vector.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/Vector3f.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/VillagerData.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/WorldIdentifiers.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/blockentity/BlockEntity.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -27,6 +27,10 @@ import org.checkerframework.checker.nullness.qual.Nullable;
 
 public interface BlockEntity {
 
+    static byte pack(int sectionX, int sectionZ) {
+        return (byte) (((sectionX) & 15) << 4 | (sectionZ & 15));
+    }
+
     default byte sectionX() {
         return (byte) ((packedXZ() >> 4) & 15);
     }

api/src/main/java/com/viaversion/viaversion/api/minecraft/blockentity/BlockEntityImpl.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/chunks/BaseChunk.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/chunks/Chunk.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/chunks/Chunk1_18.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/chunks/ChunkSection.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/chunks/ChunkSectionImpl.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/chunks/ChunkSectionLight.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/chunks/ChunkSectionLightImpl.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -47,6 +47,11 @@ public class ChunkSectionLightImpl implements ChunkSectionLight {
 
     @Override
     public void setSkyLight(byte[] data) {
+        if (data == null) {
+            this.skyLight = null;
+            return;
+        }
+
         if (data.length != LIGHT_LENGTH) throw new IllegalArgumentException("Data length != " + LIGHT_LENGTH);
         if (this.skyLight == null) {
             this.skyLight = new NibbleArray(data);

api/src/main/java/com/viaversion/viaversion/api/minecraft/chunks/DataPalette.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/chunks/DataPaletteImpl.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -29,21 +29,24 @@ import it.unimi.dsi.fastutil.ints.IntList;
 
 public final class DataPaletteImpl implements DataPalette {
 
+    private static final int DEFAULT_INITIAL_SIZE = 16;
+
     private final IntList palette;
     private final Int2IntMap inversePalette;
-    private final int[] values;
     private final int sizeBits;
+    private ChunkData values;
 
     public DataPaletteImpl(final int valuesLength) {
-        this(valuesLength, 8);
+        this(valuesLength, DEFAULT_INITIAL_SIZE);
     }
 
-    public DataPaletteImpl(final int valuesLength, final int expectedPaletteLength) {
-        this.values = new int[valuesLength];
+    public DataPaletteImpl(final int valuesLength, final int initialSize) {
+        values = new EmptyChunkData(valuesLength);
         sizeBits = Integer.numberOfTrailingZeros(valuesLength) / 3;
         // Pre-size the palette array/map
-        palette = new IntArrayList(expectedPaletteLength);
-        inversePalette = new Int2IntOpenHashMap(expectedPaletteLength);
+        palette = new IntArrayList(initialSize);
+        // To get an initial table size of initialSize, need to scale it down by load factor.
+        inversePalette = new Int2IntOpenHashMap((int) (initialSize * Int2IntOpenHashMap.DEFAULT_LOAD_FACTOR));
         inversePalette.defaultReturnValue(-1);
     }
 
@@ -54,7 +57,7 @@ public final class DataPaletteImpl implements DataPalette {
 
     @Override
     public int idAt(final int sectionCoordinate) {
-        final int index = values[sectionCoordinate];
+        final int index = values.get(sectionCoordinate);
         return palette.getInt(index);
     }
 
@@ -67,17 +70,17 @@ public final class DataPaletteImpl implements DataPalette {
             inversePalette.put(id, index);
         }
 
-        values[sectionCoordinate] = index;
+        values.set(sectionCoordinate, index);
     }
 
     @Override
     public int paletteIndexAt(final int packedCoordinate) {
-        return values[packedCoordinate];
+        return values.get(packedCoordinate);
     }
 
     @Override
     public void setPaletteIndexAt(final int sectionCoordinate, final int index) {
-        values[sectionCoordinate] = index;
+        values.set(sectionCoordinate, index);
     }
 
     @Override
@@ -131,4 +134,77 @@ public final class DataPaletteImpl implements DataPalette {
         palette.clear();
         inversePalette.clear();
     }
+
+    interface ChunkData {
+        int get(int idx);
+        void set(int idx, int val);
+    }
+
+    private class EmptyChunkData implements ChunkData {
+
+        private final int size;
+
+        public EmptyChunkData(int size) {
+            this.size = size;
+        }
+
+        @Override
+        public int get(int idx) {
+            return 0;
+        }
+
+        @Override
+        public void set(int idx, int val) {
+            if (val != 0) {
+                values = new ByteChunkData(size);
+                values.set(idx, val);
+            }
+        }
+    }
+
+    private class ByteChunkData implements ChunkData {
+        private final byte[] data;
+
+        public ByteChunkData(int size) {
+            this.data = new byte[size];
+        }
+
+        @Override
+        public int get(int idx) {
+            return data[idx] & 0xFF;
+        }
+
+        @Override
+        public void set(int idx, int val) {
+            // Overflowed size of byte (over 256 different materials), go up to short
+            if (val > 0xFF) {
+                values = new ShortChunkData(data);
+                values.set(idx, val);
+                return;
+            }
+            data[idx] = (byte) val;
+        }
+    }
+
+    private static class ShortChunkData implements ChunkData {
+        private final short[] data;
+
+        public ShortChunkData(byte[] data) {
+            this.data = new short[data.length];
+            for (int i = 0; i < data.length; i++) {
+                this.data[i] = (short) (data[i] & 0xFF);
+            }
+        }
+
+        @Override
+        public int get(int idx) {
+            return data[idx];
+        }
+
+        @Override
+        public void set(int idx, int val) {
+            data[idx] = (short) val;
+        }
+    }
+
 }

api/src/main/java/com/viaversion/viaversion/api/minecraft/chunks/NibbleArray.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/chunks/PaletteType.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2023 ViaVersion and contributors
+ * Copyright (C) 2016-2024 ViaVersion and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

api/src/main/java/com/viaversion/viaversion/api/minecraft/data/EmptyStructuredData.java

@@ -0,0 +1,94 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2024 ViaVersion and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.viaversion.viaversion.api.minecraft.data;
+
+import io.netty.buffer.ByteBuf;
+
+final class EmptyStructuredData<T> implements StructuredData<T> {
+
+    private final StructuredDataKey<T> key;
+    private int id;
+
+    EmptyStructuredData(final StructuredDataKey<T> key, final int id) {
+        this.key = key;
+        this.id = id;
+    }
+
+    @Override
+    public void setValue(final T value) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void write(final ByteBuf buffer) {
+    }
+
+    @Override
+    public void setId(final int id) {
+        this.id = id;
+    }
+
+    @Override
+    public StructuredDataKey<T> key() {
+        return this.key;
+    }
+
+    @Override
+    public T value() {
+        return null;
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return true;
+    }
+
+    @Override
+    public int id() {
+        return this.id;
+    }
+
+    @Override
+    public boolean equals(final Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        final EmptyStructuredData<?> that = (EmptyStructuredData<?>) o;
+        if (id != that.id) return false;
+        return key.equals(that.key);
+    }
+
+    @Override
+    public int hashCode() {
+        int result = key.hashCode();
+        result = 31 * result + id;
+        return result;
+    }
+
+    @Override
+    public String toString() {
+        return "EmptyStructuredData{" +
+            "key=" + key +
+            ", id=" + id +
+            '}';
+    }
+}

api/src/main/java/com/viaversion/viaversion/api/minecraft/data/FilledStructuredData.java

@@ -0,0 +1,103 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2024 ViaVersion and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.viaversion.viaversion.api.minecraft.data;
+
+import com.google.common.base.Preconditions;
+import io.netty.buffer.ByteBuf;
+import java.util.Objects;
+
+final class FilledStructuredData<T> implements StructuredData<T> {
+
+    private final StructuredDataKey<T> key;
+    private T value;
+    private int id;
+
+    FilledStructuredData(final StructuredDataKey<T> key, final T value, final int id) {
+        Preconditions.checkNotNull(key);
+        this.key = key;
+        this.value = value;
+        this.id = id;
+    }
+
+    @Override
+    public void setValue(final T value) {
+        this.value = value;
+    }
+
+    @Override
+    public void write(final ByteBuf buffer) throws Exception {
+        key.type().write(buffer, value);
+    }
+
+    @Override
+    public void setId(final int id) {
+        this.id = id;
+    }
+
+    @Override
+    public StructuredDataKey<T> key() {
+        return key;
+    }
+
+    @Override
+    public T value() {
+        return value;
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return false;
+    }
+
+    @Override
+    public int id() {
+        return id;
+    }
+
+    @Override
+    public boolean equals(final Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        final FilledStructuredData<?> that = (FilledStructuredData<?>) o;
+        if (id != that.id) return false;
+        if (!key.equals(that.key)) return false;
+        return Objects.equals(value, that.value);
+    }
+
+    @Override
+    public int hashCode() {
+        int result = key.hashCode();
+        result = 31 * result + (value != null ? value.hashCode() : 0);
+        result = 31 * result + id;
+        return result;
+    }
+
+    @Override
+    public String toString() {
+        return "FilledStructuredData{" +
+            "key=" + key +
+            ", value=" + value +
+            ", id=" + id +
+            '}';
+    }
+}