4.8.1 Release

Properly throw the client information packet into the queue instead
Schedule send client information
2023-10-03 20:57:47 +10:00 · 2023-10-03 20:54:51 +10:00 · 2023-10-03 20:39:46 +10:00 · 2023-10-03 19:49:55 +10:00 · 2023-10-03 09:46:02 +00:00 · 2023-09-28 11:12:46 +10:00
836 changed files with 17738 additions and 209692 deletions
@@ -7,7 +7,7 @@ body:
    attributes:
      value: |
        **Before reporting a bug, please see if using master/dev builds from https://ci.viaversion.com/ fixes your issue.**
-        Whenever you see fit, you can upload images or video to any of the textfields.
+        Whenever you see fit, you can upload images or videos to any of the text fields.

  - type: input
    attributes:
@@ -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]
@@ -10,19 +7,18 @@ jobs:
    # Only run on PRs if the source branch is on a different repo. We do not need to run everything twice.
    if: ${{ github.event_name != 'pull_request' || github.repository != github.event.pull_request.head.repo.full_name }}

-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04

    steps:
-    - uses: actions/checkout@v2
-    - uses: gradle/wrapper-validation-action@v1
+    - name: Checkout Repository
+      uses: actions/checkout@v4
+    - name: Validate Gradle Wrapper
+      uses: gradle/wrapper-validation-action@v1
    - name: Set up JDK 11
-      uses: actions/setup-java@v2
+      uses: actions/setup-java@v3
      with:
        distribution: 'temurin'
        java-version: 11
+        check-latest: true
    - name: Build with Gradle
      run: ./gradlew build
-    - uses: actions/upload-artifact@v2
-      with:
-        name: artifact
-        path: build/libs
@@ -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@v1
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        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
@@ -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) 2016-2022 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) &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="myName" value="viaversion-gpl" />
  </copyright>
 </component>
@@ -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) 2016-2022 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) &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="myName" value="viaversion-mit" />
  </copyright>
 </component>
@@ -1,44 +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
 --------
-**[wiki.vg](https://wiki.vg)** (Used for information regarding packet structure, we also contribute back)
+You can find official releases in the following places:

-**[Burger](https://github.com/Pokechu22/Burger)** (See [PAaaS](https://github.com/Matsv/Paaas))
+- **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

-**[OpenNBT](https://github.com/ViaVersion/OpenNBT)**
+Dev builds for **all** of our projects are on our Jenkins server:

+- **Jenkins**: https://ci.viaversion.com

-Releases / Dev Builds:
--------
-You can find official releases here:
-
-https://www.spigotmc.org/resources/viaversion.19254/history
-
+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>
@@ -46,34 +43,57 @@ You can find official dev builds here:
 </repository>
 ```

-**API-artifact:**
 ```xml
 <dependency>
    <groupId>com.viaversion</groupId>
    <artifactId>viaversion-api</artifactId>
-    <version>LATEST</version>
+    <version>[4.0.0,5.0.0)</version>
    <scope>provided</scope>
 </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).


-Building:
+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.


-License:
+Mapping Files
+--------------
+Mapping files are generated and managed in our [Mappings repository](https://github.com/ViaVersion/Mappings).
+
+
+Resources
 --------
-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
+
+- **[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
 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).
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -23,13 +23,12 @@
 package us.myles.ViaVersion.api;

 import io.netty.buffer.ByteBuf;
+import java.util.SortedSet;
+import java.util.UUID;
 import us.myles.ViaVersion.api.boss.BossBar;
 import us.myles.ViaVersion.api.boss.BossColor;
 import us.myles.ViaVersion.api.boss.BossStyle;

-import java.util.SortedSet;
-import java.util.UUID;
-
 /**
 * @deprecated may be removed at some point, use {@link com.viaversion.viaversion.api.Via}
 */
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -24,13 +24,12 @@ package us.myles.ViaVersion.api;

 import com.viaversion.viaversion.api.Via;
 import io.netty.buffer.ByteBuf;
+import java.util.SortedSet;
+import java.util.UUID;
 import us.myles.ViaVersion.api.boss.BossBar;
 import us.myles.ViaVersion.api.boss.BossColor;
 import us.myles.ViaVersion.api.boss.BossStyle;

-import java.util.SortedSet;
-import java.util.UUID;
-
 /**
 * @deprecated may be removed at some point, use {@link Via#getAPI()}
 */
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -26,14 +26,13 @@ import com.google.common.base.Preconditions;
 import com.viaversion.viaversion.api.protocol.version.VersionRange;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
-import org.checkerframework.checker.nullness.qual.NonNull;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Set;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.checker.nullness.qual.Nullable;

 /**
 * @deprecated will no longer be updated and may be removed at some point, use {@link com.viaversion.viaversion.api.protocol.version.ProtocolVersion}
@@ -84,7 +83,11 @@ public class ProtocolVersion {
    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_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, "1.19.1/2", new VersionRange("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 VersionRange("1.20", 0, 1));
+    public static final ProtocolVersion v1_20_2 = register(764, "1.20.2");
    public static final ProtocolVersion unknown = register(-1, "UNKNOWN");

    public static ProtocolVersion register(int version, String name) {
@@ -1,11 +1,18 @@
 plugins {
    id("net.kyori.blossom")
+    id("org.jetbrains.gradle.plugin.idea-ext")
    id("via.shadow-conventions")
 }

-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 {
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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;
+    }
 }
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -29,10 +29,9 @@ import com.viaversion.viaversion.api.platform.ViaPlatform;
 import com.viaversion.viaversion.api.protocol.ProtocolManager;
 import com.viaversion.viaversion.api.protocol.version.ServerProtocolVersion;
 import io.netty.buffer.ByteBuf;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.SortedSet;
 import java.util.UUID;
+import org.checkerframework.checker.nullness.qual.Nullable;

 /**
 * General api point. For more specialized api methods, see {@link Via#getManager()}.
@@ -64,7 +63,7 @@ public interface ViaAPI<T> {
     * @return API version incremented with meaningful API changes
     */
    default int apiVersion() {
-        return 15;
+        return 20;
    }

    /**
@@ -136,7 +135,7 @@ public interface ViaAPI<T> {
     * Returns the supported protocol versions.
     * This method removes any blocked protocol versions.
     *
-     * @return a list of protocol versions
+     * @return a sorted set of protocol versions
     * @see #getFullSupportedVersions() for a full list
     */
    SortedSet<Integer> getSupportedVersions();
@@ -144,7 +143,7 @@ public interface ViaAPI<T> {
    /**
     * Returns the supported protocol versions, including blocked protocols.
     *
-     * @return a list of protocol versions
+     * @return a sorted set of protocol versions
     */
    SortedSet<Integer> getFullSupportedVersions();

@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -30,7 +30,7 @@ import com.viaversion.viaversion.api.platform.ViaPlatform;
 import com.viaversion.viaversion.api.platform.ViaPlatformLoader;
 import com.viaversion.viaversion.api.platform.providers.ViaProviders;
 import com.viaversion.viaversion.api.protocol.ProtocolManager;
-
+import com.viaversion.viaversion.api.scheduler.Scheduler;
 import java.util.Set;

 public interface ViaManager {
@@ -84,12 +84,18 @@ public interface ViaManager {
     */
    ViaPlatformLoader getLoader();

+    /**
+     * Returns the async task scheduler.
+     *
+     * @return async task scheduler
+     */
+    Scheduler getScheduler();
+
    /**
     * If debug is enabled, packets and other otherwise suppressed warnings will be logged.
     *
     * @return true if enabled
     */
-    @Deprecated
    default boolean isDebug() {
        return debugHandler().enabled();
    }
@@ -125,4 +131,11 @@ public interface ViaManager {
     * @param runnable runnable to be executed
     */
    void addEnableListener(Runnable runnable);
+
+    /**
+     * Returns whether the manager has been initialized (and protocols have been loaded).
+     *
+     * @return whether the manager has been initialized
+     */
+    boolean isInitialized();
 }
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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 +23,6 @@
 package com.viaversion.viaversion.api.command;

 import com.viaversion.viaversion.util.ChatColorUtil;
-
 import java.util.Collections;
 import java.util.List;

@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -22,9 +22,8 @@
 */
 package com.viaversion.viaversion.api.command;

-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.List;
+import org.checkerframework.checker.nullness.qual.Nullable;

 public interface ViaVersionCommand {
    /**
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -186,13 +186,6 @@ public interface ViaVersionConfig {
     */
    String getMaxWarningsKickMessage();

-    /**
-     * Is anti-xray enabled?
-     *
-     * @return A boolean
-     */
-    boolean isAntiXRay();
-
    /**
     * Send supported versions in the status response packet
     *
@@ -263,6 +256,8 @@ public interface ViaVersionConfig {
     */
    boolean is1_13TeamColourFix();

+    boolean shouldRegisterUserConnectionOnJoin();
+
    /**
     * Should we fix shift quick move action for 1.12 clients
     *
@@ -458,4 +453,6 @@ public interface ViaVersionConfig {
    boolean cache1_17Light();

    @Nullable String chatTypeFormat(String translationKey);
+
+    boolean isArmorToggleFix();
 }
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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 +22,10 @@
 */
 package com.viaversion.viaversion.api.connection;

-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
+import org.checkerframework.checker.nullness.qual.Nullable;

 /**
 * Handles injected UserConnections
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -23,10 +23,10 @@
 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 org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.UUID;
+import org.checkerframework.checker.nullness.qual.Nullable;

 public interface ProtocolInfo {

@@ -34,10 +34,63 @@ 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();
+    @Deprecated/*(forRemoval = true)*/
+    default State getState() {
+        return this.getServerState();
+    }

-    void setState(State state);
+    /**
+     * Returns the protocol state the client is currently in.
+     *
+     * @return the client protocol state
+     */
+    State getClientState();
+
+    /**
+     * 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 -1 if not set.
@@ -93,5 +146,6 @@ public interface ProtocolInfo {
     *
     * @return user connection
     */
+    @Deprecated/*(forRemoval = true)*/
    UserConnection getUser();
 }
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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() {
+    }
 }
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -32,12 +32,11 @@ import com.viaversion.viaversion.exception.InformativeException;
 import io.netty.buffer.ByteBuf;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelFuture;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.Collection;
 import java.util.Map;
 import java.util.UUID;
 import java.util.function.Function;
+import org.checkerframework.checker.nullness.qual.Nullable;

 public interface UserConnection {

@@ -0,0 +1,42 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2023 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.data;
+
+public interface BiMappings extends Mappings {
+
+    /**
+     * Returns the inverse of the bimappings.
+     *
+     * @return inverse of the bimappings
+     */
+    @Override
+    BiMappings inverse();
+
+    static BiMappings of(final Mappings mappings) {
+        return of(mappings, mappings.inverse());
+    }
+
+    static BiMappings of(final Mappings mappings, final Mappings inverse) {
+        return new BiMappingsBase(mappings, inverse);
+    }
+}
@@ -0,0 +1,65 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2023 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.data;
+
+public class BiMappingsBase implements BiMappings {
+
+    protected final Mappings mappings;
+    private final BiMappingsBase inverse;
+
+    protected BiMappingsBase(final Mappings mappings, final Mappings inverse) {
+        this.mappings = mappings;
+        this.inverse = new BiMappingsBase(inverse, this);
+    }
+
+    private BiMappingsBase(final Mappings mappings, final BiMappingsBase inverse) {
+        this.mappings = mappings;
+        this.inverse = inverse;
+    }
+
+    @Override
+    public int getNewId(final int id) {
+        return mappings.getNewId(id);
+    }
+
+    @Override
+    public void setNewId(final int id, final int mappedId) {
+        mappings.setNewId(id, mappedId);
+        inverse.mappings.setNewId(mappedId, id);
+    }
+
+    @Override
+    public int size() {
+        return mappings.size();
+    }
+
+    @Override
+    public int mappedSize() {
+        return mappings.mappedSize();
+    }
+
+    @Override
+    public BiMappings inverse() {
+        return this.inverse;
+    }
+}
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -27,9 +27,12 @@ import org.checkerframework.checker.nullness.qual.Nullable;
 /**
 * Mappings containing the full string identifier mappings.
 */
-public interface FullMappings {
+public interface FullMappings extends Mappings {

-    Mappings mappings();
+    @Deprecated
+    default Mappings mappings() {
+        return this;
+    }

    /**
     * Returns the unmapped integer id for the given identifier, or -1 if not found.
@@ -70,4 +73,7 @@ public interface FullMappings {
     * @return mapped string identifier, or null if not found
     */
    @Nullable String mappedIdentifier(String identifier);
+
+    @Override
+    FullMappings inverse();
 }
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -22,33 +22,34 @@
 */
 package com.viaversion.viaversion.api.data;

-import com.google.gson.JsonArray;
+import com.viaversion.viaversion.util.Key;
 import it.unimi.dsi.fastutil.objects.Object2IntMap;
+import it.unimi.dsi.fastutil.objects.Object2IntOpenHashMap;
+import java.util.List;
 import org.checkerframework.checker.nullness.qual.Nullable;

 public class FullMappingsBase implements FullMappings {
+    private static final String[] EMPTY_ARRAY = new String[0];
    private final Object2IntMap<String> stringToId;
    private final Object2IntMap<String> mappedStringToId;
    private final String[] idToString;
    private final String[] mappedIdToString;
    private final Mappings mappings;

-    public FullMappingsBase(final JsonArray oldMappings, final JsonArray newMappings, final Mappings mappings) {
+    public FullMappingsBase(final List<String> unmappedIdentifiers, final List<String> mappedIdentifiers, final Mappings mappings) {
        this.mappings = mappings;
-        stringToId = MappingDataLoader.arrayToMap(oldMappings);
-        mappedStringToId = MappingDataLoader.arrayToMap(newMappings);
-        stringToId.defaultReturnValue(-1);
-        mappedStringToId.defaultReturnValue(-1);
+        this.stringToId = toInverseMap(unmappedIdentifiers);
+        this.mappedStringToId = toInverseMap(mappedIdentifiers);
+        this.idToString = unmappedIdentifiers.toArray(EMPTY_ARRAY);
+        this.mappedIdToString = mappedIdentifiers.toArray(EMPTY_ARRAY);
+    }

-        idToString = new String[oldMappings.size()];
-        for (int i = 0; i < oldMappings.size(); i++) {
-            idToString[i] = oldMappings.get(i).getAsString();
-        }
-
-        mappedIdToString = new String[newMappings.size()];
-        for (int i = 0; i < newMappings.size(); i++) {
-            mappedIdToString[i] = newMappings.get(i).getAsString();
-        }
+    private FullMappingsBase(final Object2IntMap<String> stringToId, final Object2IntMap<String> mappedStringToId, final String[] idToString, final String[] mappedIdToString, final Mappings mappings) {
+        this.stringToId = stringToId;
+        this.mappedStringToId = mappedStringToId;
+        this.idToString = idToString;
+        this.mappedIdToString = mappedIdToString;
+        this.mappings = mappings;
    }

    @Override
@@ -58,22 +59,24 @@ public class FullMappingsBase implements FullMappings {

    @Override
    public int id(final String identifier) {
-        return stringToId.getInt(identifier);
+        return stringToId.getInt(Key.stripMinecraftNamespace(identifier));
    }

    @Override
    public int mappedId(final String mappedIdentifier) {
-        return mappedStringToId.getInt(mappedIdentifier);
+        return mappedStringToId.getInt(Key.stripMinecraftNamespace(mappedIdentifier));
    }

    @Override
    public String identifier(final int id) {
-        return idToString[id];
+        final String identifier = idToString[id];
+        return Key.namespaced(identifier);
    }

    @Override
    public String mappedIdentifier(final int mappedId) {
-        return mappedIdToString[mappedId];
+        final String identifier = mappedIdToString[mappedId];
+        return Key.namespaced(identifier);
    }

    @Override
@@ -86,4 +89,38 @@ public class FullMappingsBase implements FullMappings {
        final int mappedId = mappings.getNewId(id);
        return mappedId != -1 ? mappedIdentifier(mappedId) : null;
    }
+
+    @Override
+    public int getNewId(int id) {
+        return mappings.getNewId(id);
+    }
+
+    @Override
+    public void setNewId(int id, int mappedId) {
+        mappings.setNewId(id, mappedId);
+    }
+
+    @Override
+    public int size() {
+        return mappings.size();
+    }
+
+    @Override
+    public int mappedSize() {
+        return mappings.mappedSize();
+    }
+
+    @Override
+    public FullMappings inverse() {
+        return new FullMappingsBase(mappedStringToId, stringToId, mappedIdToString, idToString, mappings.inverse());
+    }
+
+    private static Object2IntMap<String> toInverseMap(final List<String> list) {
+        final Object2IntMap<String> map = new Object2IntOpenHashMap<>(list.size());
+        map.defaultReturnValue(-1);
+        for (int i = 0; i < list.size(); i++) {
+            map.put(list.get(i), i);
+        }
+        return map;
+    }
 }
@@ -0,0 +1,59 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2023 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.data;
+
+public class IdentityMappings implements Mappings {
+
+    private final int size;
+    private final int mappedSize;
+
+    public IdentityMappings(final int size, final int mappedSize) {
+        this.size = size;
+        this.mappedSize = mappedSize;
+    }
+
+    @Override
+    public int getNewId(final int id) {
+        return id >= 0 && id < size ? id : -1;
+    }
+
+    @Override
+    public void setNewId(final int id, final int mappedId) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public int size() {
+        return size;
+    }
+
+    @Override
+    public int mappedSize() {
+        return mappedSize;
+    }
+
+    @Override
+    public Mappings inverse() {
+        return new IdentityMappings(mappedSize, size);
+    }
+}
@@ -0,0 +1,71 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2023 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.data;
+
+import com.viaversion.viaversion.util.Int2IntBiMap;
+
+public class Int2IntMapBiMappings implements BiMappings {
+
+    private final Int2IntBiMap mappings;
+    private final Int2IntMapBiMappings inverse;
+
+    protected Int2IntMapBiMappings(final Int2IntBiMap mappings) {
+        this.mappings = mappings;
+        this.inverse = new Int2IntMapBiMappings(mappings.inverse(), this);
+        mappings.defaultReturnValue(-1);
+    }
+
+    private Int2IntMapBiMappings(final Int2IntBiMap mappings, final Int2IntMapBiMappings inverse) {
+        this.mappings = mappings;
+        this.inverse = inverse;
+    }
+
+    public static Int2IntMapBiMappings of(final Int2IntBiMap mappings) {
+        return new Int2IntMapBiMappings(mappings);
+    }
+
+    @Override
+    public int getNewId(final int id) {
+        return mappings.get(id);
+    }
+
+    @Override
+    public void setNewId(final int id, final int mappedId) {
+        mappings.put(id, mappedId);
+    }
+
+    @Override
+    public int size() {
+        return mappings.size();
+    }
+
+    @Override
+    public int mappedSize() {
+        return mappings.inverse().size();
+    }
+
+    @Override
+    public BiMappings inverse() {
+        return this.inverse;
+    }
+}
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -40,7 +40,6 @@ public class Int2IntMapMappings implements Mappings {
    }

    public static Int2IntMapMappings of() {
-
        return new Int2IntMapMappings(new Int2IntOpenHashMap(), -1);
    }

@@ -50,8 +49,8 @@ public class Int2IntMapMappings implements Mappings {
    }

    @Override
-    public void setNewId(final int id, final int newId) {
-        mappings.put(id, newId);
+    public void setNewId(final int id, final int mappedId) {
+        mappings.put(id, mappedId);
    }

    @Override
@@ -63,4 +62,16 @@ public class Int2IntMapMappings implements Mappings {
    public int mappedSize() {
        return mappedIds;
    }
+
+    @Override
+    public Mappings inverse() {
+        final Int2IntMap inverse = new Int2IntOpenHashMap();
+        inverse.defaultReturnValue(-1);
+        for (final Int2IntMap.Entry entry : mappings.int2IntEntrySet()) {
+            if (entry.getIntValue() != -1) {
+                inverse.putIfAbsent(entry.getIntValue(), entry.getIntKey());
+            }
+        }
+        return of(inverse, size());
+    }
 }
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -22,106 +22,39 @@
 */
 package com.viaversion.viaversion.api.data;

-import com.google.gson.JsonArray;
-import com.google.gson.JsonObject;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.Arrays;

 public class IntArrayMappings implements Mappings {
-    private final int[] oldToNew;
+    private final int[] mappings;
    private final int mappedIds;

-    protected IntArrayMappings(final int[] oldToNew, final int mappedIds) {
-        this.oldToNew = oldToNew;
+    protected IntArrayMappings(final int[] mappings, final int mappedIds) {
+        this.mappings = mappings;
        this.mappedIds = mappedIds;
    }

-    public static IntArrayMappings of(final int[] oldToNew, final int mappedIds) {
-        return new IntArrayMappings(oldToNew, mappedIds);
+    public static IntArrayMappings of(final int[] mappings, final int mappedIds) {
+        return new IntArrayMappings(mappings, mappedIds);
    }

+    @Deprecated
    public static Builder<IntArrayMappings> builder() {
        return Mappings.builder(IntArrayMappings::new);
    }

-    @Deprecated/*(forRemoval = true)*/
-    public IntArrayMappings(int[] oldToNew) {
-        this(oldToNew, -1);
-    }
-
-    @Deprecated/*(forRemoval = true)*/
-    public IntArrayMappings(int size, JsonObject oldMapping, JsonObject newMapping, @Nullable JsonObject diffMapping) {
-        oldToNew = new int[size];
-        Arrays.fill(oldToNew, -1);
-        this.mappedIds = newMapping.size();
-        MappingDataLoader.mapIdentifiers(oldToNew, oldMapping, newMapping, diffMapping);
-    }
-
-    @Deprecated/*(forRemoval = true)*/
-    public IntArrayMappings(JsonObject oldMapping, JsonObject newMapping, @Nullable JsonObject diffMapping) {
-        this(oldMapping.entrySet().size(), oldMapping, newMapping, diffMapping);
-    }
-
-    @Deprecated/*(forRemoval = true)*/
-    public IntArrayMappings(int size, JsonObject oldMapping, JsonObject newMapping) {
-        oldToNew = new int[size];
-        Arrays.fill(oldToNew, -1);
-        mappedIds = -1;
-        MappingDataLoader.mapIdentifiers(oldToNew, oldMapping, newMapping);
-    }
-
-    @Deprecated/*(forRemoval = true)*/
-    public IntArrayMappings(JsonObject oldMapping, JsonObject newMapping) {
-        this(oldMapping.entrySet().size(), oldMapping, newMapping);
-    }
-
-    @Deprecated/*(forRemoval = true)*/
-    public IntArrayMappings(int size, JsonArray oldMapping, JsonArray newMapping, JsonObject diffMapping, boolean warnOnMissing) {
-        oldToNew = new int[size];
-        Arrays.fill(oldToNew, -1);
-        mappedIds = -1;
-        MappingDataLoader.mapIdentifiers(oldToNew, oldMapping, newMapping, diffMapping, warnOnMissing);
-    }
-
-    @Deprecated/*(forRemoval = true)*/
-    public IntArrayMappings(int size, JsonArray oldMapping, JsonArray newMapping, boolean warnOnMissing) {
-        this(size, oldMapping, newMapping, null, warnOnMissing);
-    }
-
-    @Deprecated/*(forRemoval = true)*/
-    public IntArrayMappings(JsonArray oldMapping, JsonArray newMapping, boolean warnOnMissing) {
-        this(oldMapping.size(), oldMapping, newMapping, warnOnMissing);
-    }
-
-    @Deprecated/*(forRemoval = true)*/
-    public IntArrayMappings(int size, JsonArray oldMapping, JsonArray newMapping) {
-        this(size, oldMapping, newMapping, true);
-    }
-
-    @Deprecated/*(forRemoval = true)*/
-    public IntArrayMappings(JsonArray oldMapping, JsonArray newMapping, JsonObject diffMapping) {
-        this(oldMapping.size(), oldMapping, newMapping, diffMapping, true);
-    }
-
-    @Deprecated/*(forRemoval = true)*/
-    public IntArrayMappings(JsonArray oldMapping, JsonArray newMapping) {
-        this(oldMapping.size(), oldMapping, newMapping, true);
-    }
-
    @Override
    public int getNewId(int id) {
-        return id >= 0 && id < oldToNew.length ? oldToNew[id] : -1;
+        return id >= 0 && id < mappings.length ? mappings[id] : -1;
    }

    @Override
-    public void setNewId(int id, int newId) {
-        oldToNew[id] = newId;
+    public void setNewId(int id, int mappedId) {
+        mappings[id] = mappedId;
    }

    @Override
    public int size() {
-        return oldToNew.length;
+        return mappings.length;
    }

    @Override
@@ -129,7 +62,20 @@ public class IntArrayMappings implements Mappings {
        return mappedIds;
    }

-    public int[] getOldToNew() {
-        return oldToNew;
+    @Override
+    public Mappings inverse() {
+        final int[] inverse = new int[mappedIds];
+        Arrays.fill(inverse, -1);
+        for (int id = 0; id < mappings.length; id++) {
+            final int mappedId = mappings[id];
+            if (mappedId != -1 && inverse[mappedId] == -1) {
+                inverse[mappedId] = id;
+            }
+        }
+        return of(inverse, mappings.length);
+    }
+
+    public int[] raw() {
+        return mappings;
    }
 }
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -24,10 +24,8 @@ package com.viaversion.viaversion.api.data;

 import com.viaversion.viaversion.api.minecraft.RegistryType;
 import com.viaversion.viaversion.api.minecraft.TagData;
-import com.viaversion.viaversion.util.Int2IntBiMap;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.List;
+import org.checkerframework.checker.nullness.qual.Nullable;

 public interface MappingData {

@@ -89,7 +87,7 @@ public interface MappingData {
     */
    @Nullable List<TagData> getTags(RegistryType type);

-    @Nullable Int2IntBiMap getItemMappings();
+    @Nullable BiMappings getItemMappings();

    @Nullable ParticleMappings getParticleMappings();

@@ -103,6 +101,8 @@ public interface MappingData {

    @Nullable Mappings getStatisticsMappings();

+    @Nullable Mappings getMenuMappings();
+
    @Nullable Mappings getEnchantmentMappings();

    @Nullable FullMappings getEntityMappings();
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -22,28 +22,26 @@
 */
 package com.viaversion.viaversion.api.data;

-import com.google.gson.JsonArray;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonObject;
+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;
 import com.viaversion.viaversion.api.minecraft.TagData;
-import com.viaversion.viaversion.util.Int2IntBiHashMap;
-import com.viaversion.viaversion.util.Int2IntBiMap;
-import it.unimi.dsi.fastutil.objects.Object2IntMap;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.ArrayList;
 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 {
-    protected final String oldVersion;
-    protected final String newVersion;
-    protected final boolean hasDiffFile;
-    protected Int2IntBiMap itemMappings;
+
+    protected final String unmappedVersion;
+    protected final String mappedVersion;
+    protected BiMappings itemMappings;
    protected FullMappings argumentTypeMappings;
    protected FullMappings entityMappings;
    protected ParticleMappings particleMappings;
@@ -54,124 +52,125 @@ public class MappingDataBase implements MappingData {
    protected Mappings statisticsMappings;
    protected Mappings enchantmentMappings;
    protected Mappings paintingMappings;
+    protected Mappings menuMappings;
    protected Map<RegistryType, List<TagData>> tags;
-    protected boolean loadItems = true;

-    public MappingDataBase(String oldVersion, String newVersion) {
-        this(oldVersion, newVersion, false);
-    }
-
-    public MappingDataBase(String oldVersion, String newVersion, boolean hasDiffFile) {
-        this.oldVersion = oldVersion;
-        this.newVersion = newVersion;
-        this.hasDiffFile = hasDiffFile;
+    public MappingDataBase(final String unmappedVersion, final String mappedVersion) {
+        this.unmappedVersion = unmappedVersion;
+        this.mappedVersion = mappedVersion;
    }

    @Override
    public void load() {
-        getLogger().info("Loading " + oldVersion + " -> " + newVersion + " mappings...");
-        JsonObject diffmapping = hasDiffFile ? loadDiffFile() : null;
-        JsonObject oldMappings = MappingDataLoader.loadData("mapping-" + oldVersion + ".json", true);
-        JsonObject newMappings = MappingDataLoader.loadData("mapping-" + newVersion + ".json", true);
-
-        blockMappings = loadFromObject(oldMappings, newMappings, diffmapping, "blocks");
-        blockStateMappings = loadFromObject(oldMappings, newMappings, diffmapping, "blockstates");
-        blockEntityMappings = loadFromArray(oldMappings, newMappings, diffmapping, "blockentities");
-        soundMappings = loadFromArray(oldMappings, newMappings, diffmapping, "sounds");
-        statisticsMappings = loadFromArray(oldMappings, newMappings, diffmapping, "statistics");
-        enchantmentMappings = loadFromArray(oldMappings, newMappings, diffmapping, "enchantments");
-        paintingMappings = loadFromArray(oldMappings, newMappings, diffmapping, "paintings");
-
-        entityMappings = loadFullMappings(oldMappings, newMappings, diffmapping, "entities");
-        argumentTypeMappings = loadFullMappings(oldMappings, newMappings, diffmapping, "argumenttypes");
-
-        Mappings particles = loadFromArray(oldMappings, newMappings, diffmapping, "particles");
-        if (particles != null) {
-            particleMappings = new ParticleMappings(oldMappings.getAsJsonArray("particles"), newMappings.getAsJsonArray("particles"), particles);
+        if (Via.getManager().isDebug()) {
+            getLogger().info("Loading " + unmappedVersion + " -> " + mappedVersion + " mappings...");
        }

-        if (loadItems && newMappings.has("items")) {
-            itemMappings = new Int2IntBiHashMap();
-            itemMappings.defaultReturnValue(-1);
-            MappingDataLoader.mapIdentifiers(itemMappings, oldMappings.getAsJsonObject("items"), newMappings.getAsJsonObject("items"),
-                    diffmapping != null ? diffmapping.getAsJsonObject("items") : null, true);
-        }
+        final CompoundTag data = readNBTFile("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");

-        if (diffmapping != null && diffmapping.has("tags")) {
-            this.tags = new EnumMap<>(RegistryType.class);
-            JsonObject tags = diffmapping.getAsJsonObject("tags");
-            if (tags.has(RegistryType.ITEM.resourceLocation())) {
-                loadTags(RegistryType.ITEM, tags, MappingDataLoader.indexedObjectToMap(newMappings.getAsJsonObject("items")));
-            }
-            if (tags.has(RegistryType.BLOCK.resourceLocation())) {
-                loadTags(RegistryType.BLOCK, tags, MappingDataLoader.indexedObjectToMap(newMappings.getAsJsonObject("blocks")));
-            }
-        }
+        final CompoundTag unmappedIdentifierData = MappingDataLoader.loadNBT("identifiers-" + unmappedVersion + ".nbt", true);
+        final CompoundTag mappedIdentifierData = MappingDataLoader.loadNBT("identifiers-" + mappedVersion + ".nbt", true);
+        if (unmappedIdentifierData != null && mappedIdentifierData != null) {
+            entityMappings = loadFullMappings(data, unmappedIdentifierData, mappedIdentifierData, "entities");
+            argumentTypeMappings = loadFullMappings(data, unmappedIdentifierData, mappedIdentifierData, "argumenttypes");

-        loadExtras(oldMappings, newMappings, diffmapping);
-    }
-
-    protected FullMappings loadFullMappings(JsonObject oldMappings, JsonObject newMappings, @Nullable JsonObject diffMappings, String key) {
-        Mappings mappings = loadFromArray(oldMappings, newMappings, diffMappings, key);
-        return mappings != null ? new FullMappingsBase(oldMappings.getAsJsonArray(key), newMappings.getAsJsonArray(key), mappings) : null;
-    }
-
-    private void loadTags(RegistryType type, JsonObject object, Object2IntMap<String> typeMapping) {
-        JsonObject tags = object.getAsJsonObject(type.resourceLocation());
-        List<TagData> tagsList = new ArrayList<>(tags.size());
-        for (Map.Entry<String, JsonElement> entry : tags.entrySet()) {
-            JsonArray array = entry.getValue().getAsJsonArray();
-            int[] entries = new int[array.size()];
-            int i = 0;
-            for (JsonElement element : array) {
-                String stringId = element.getAsString();
-                if (!typeMapping.containsKey(stringId) && !typeMapping.containsKey(stringId = stringId.replace("minecraft:", ""))) { // aaa
-                    getLogger().warning(type + " Tags contains invalid type identifier " + stringId + " in tag " + entry.getKey());
-                    continue;
+            final ListTag unmappedParticles = unmappedIdentifierData.get("particles");
+            final ListTag mappedParticles = mappedIdentifierData.get("particles");
+            if (unmappedParticles != null && mappedParticles != null) {
+                Mappings particleMappings = loadMappings(data, "particles");
+                if (particleMappings == null) {
+                    particleMappings = new IdentityMappings(unmappedParticles.size(), mappedParticles.size());
                }

-                entries[i++] = typeMapping.getInt(stringId);
+                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);
            }
-            tagsList.add(new TagData(entry.getKey(), entries));
+        }
+
+        final CompoundTag tagsTag = data.get("tags");
+        if (tagsTag != null) {
+            this.tags = new EnumMap<>(RegistryType.class);
+            loadTags(RegistryType.ITEM, tagsTag);
+            loadTags(RegistryType.BLOCK, tagsTag);
+        }
+
+        loadExtras(data);
+    }
+
+    protected @Nullable CompoundTag readNBTFile(final String name) {
+        return MappingDataLoader.loadNBT(name);
+    }
+
+    protected @Nullable Mappings loadMappings(final CompoundTag data, final String key) {
+        return MappingDataLoader.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 BiMappings loadBiMappings(final CompoundTag data, final String key) {
+        final Mappings mappings = loadMappings(data, key);
+        return mappings != null ? BiMappings.of(mappings) : null;
+    }
+
+    private void loadTags(final RegistryType type, final CompoundTag data) {
+        final CompoundTag tag = data.get(type.resourceLocation());
+        if (tag == null) {
+            return;
+        }
+
+        final List<TagData> tagsList = new ArrayList<>(tags.size());
+        for (final Map.Entry<String, Tag> entry : tag.entrySet()) {
+            final IntArrayTag entries = (IntArrayTag) entry.getValue();
+            tagsList.add(new TagData(entry.getKey(), entries.getValue()));
        }

        this.tags.put(type, tagsList);
    }

    @Override
-    public int getNewBlockStateId(int id) {
+    public int getNewBlockStateId(final int id) {
        return checkValidity(id, blockStateMappings.getNewId(id), "blockstate");
    }

    @Override
-    public int getNewBlockId(int id) {
+    public int getNewBlockId(final int id) {
        return checkValidity(id, blockMappings.getNewId(id), "block");
    }

    @Override
-    public int getNewItemId(int id) {
-        return checkValidity(id, itemMappings.get(id), "item");
+    public int getNewItemId(final int id) {
+        return checkValidity(id, itemMappings.getNewId(id), "item");
    }

    @Override
-    public int getOldItemId(int id) {
-        int oldId = itemMappings.inverse().get(id);
-        // Remap new items to stone
-        return oldId != -1 ? oldId : 1;
+    public int getOldItemId(final int id) {
+        return itemMappings.inverse().getNewIdOrDefault(id, 1);
    }

    @Override
-    public int getNewParticleId(int id) {
-        return checkValidity(id, particleMappings.mappings().getNewId(id), "particles");
+    public int getNewParticleId(final int id) {
+        return checkValidity(id, particleMappings.getNewId(id), "particles");
    }

    @Override
-    public @Nullable List<TagData> getTags(RegistryType type) {
+    public @Nullable List<TagData> getTags(final RegistryType type) {
        return tags != null ? tags.get(type) : null;
    }

    @Override
-    public @Nullable Int2IntBiMap getItemMappings() {
+    public @Nullable BiMappings getItemMappings() {
        return itemMappings;
    }

@@ -205,6 +204,11 @@ public class MappingDataBase implements MappingData {
        return statisticsMappings;
    }

+    @Override
+    public @Nullable Mappings getMenuMappings() {
+        return menuMappings;
+    }
+
    @Override
    public @Nullable Mappings getEnchantmentMappings() {
        return enchantmentMappings;
@@ -225,26 +229,6 @@ public class MappingDataBase implements MappingData {
        return paintingMappings;
    }

-    protected @Nullable Mappings loadFromArray(JsonObject oldMappings, JsonObject newMappings, @Nullable JsonObject diffMappings, String key) {
-        if (!oldMappings.has(key) || !newMappings.has(key)) return null;
-
-        JsonObject diff = diffMappings != null ? diffMappings.getAsJsonObject(key) : null;
-        return IntArrayMappings.builder().unmapped(oldMappings.getAsJsonArray(key))
-                .mapped(newMappings.getAsJsonArray(key)).diffMappings(diff).build();
-    }
-
-    protected @Nullable Mappings loadFromObject(JsonObject oldMappings, JsonObject newMappings, @Nullable JsonObject diffMappings, String key) {
-        if (!oldMappings.has(key) || !newMappings.has(key)) return null;
-
-        JsonObject diff = diffMappings != null ? diffMappings.getAsJsonObject(key) : null;
-        return IntArrayMappings.builder().unmapped(oldMappings.getAsJsonObject(key))
-                .mapped(newMappings.getAsJsonObject(key)).diffMappings(diff).build();
-    }
-
-    protected @Nullable JsonObject loadDiffFile() {
-        return MappingDataLoader.loadData("mappingdiff-" + oldVersion + "to" + newVersion + ".json");
-    }
-
    protected Logger getLogger() {
        return Via.getPlatform().getLogger();
    }
@@ -257,21 +241,16 @@ public class MappingDataBase implements MappingData {
     * @param type     mapping type (e.g. "item")
     * @return the given mapped id if valid, else 0
     */
-    protected int checkValidity(int id, int mappedId, String type) {
+    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", newVersion, type, oldVersion, 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;
    }

-    /**
-     * To be overridden.
-     *
-     * @param oldMappings  old mappings
-     * @param newMappings  new mappings
-     * @param diffMappings diff mappings if present
-     */
-    protected void loadExtras(JsonObject oldMappings, JsonObject newMappings, @Nullable JsonObject diffMappings) {
+    protected void loadExtras(final CompoundTag data) {
    }
 }
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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 +22,13 @@
 */
 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.google.common.annotations.Beta;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonIOException;
@@ -29,46 +36,36 @@ import com.google.gson.JsonObject;
 import com.google.gson.JsonSyntaxException;
 import com.viaversion.viaversion.api.Via;
 import com.viaversion.viaversion.util.GsonUtil;
-import com.viaversion.viaversion.util.Int2IntBiMap;
 import it.unimi.dsi.fastutil.objects.Object2IntMap;
 import it.unimi.dsi.fastutil.objects.Object2IntOpenHashMap;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.io.File;
 import java.io.FileReader;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
+import java.util.Arrays;
+import java.util.HashMap;
 import java.util.Map;
-import java.util.concurrent.ConcurrentHashMap;
+import java.util.stream.Collectors;
+import org.checkerframework.checker.nullness.qual.Nullable;

-public class MappingDataLoader {
+public final class MappingDataLoader {

-    private static final Map<String, JsonObject> MAPPINGS_CACHE = new ConcurrentHashMap<>();
-    private static boolean cacheJsonMappings;
-
-    /**
-     * Returns true if a selected number of mappings should be cached.
-     * If enabled, cleanup should be done after the cache is no longer needed.
-     *
-     * @return true if mappings should be cached
-     */
-    public static boolean isCacheJsonMappings() {
-        return cacheJsonMappings;
-    }
+    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() {
-        cacheJsonMappings = true;
+        // Always enabled
    }

-    /**
-     * Returns the cached mappings. Cleared after ViaVersion has been fully loaded.
-     *
-     * @return cached mapping file json objects
-     * @see #isCacheJsonMappings()
-     */
-    public static Map<String, JsonObject> getMappingsCache() {
-        return MAPPINGS_CACHE;
+    public static void clearCache() {
+        MAPPINGS_CACHE.clear();
+        cacheValid = false;
    }

    /**
@@ -76,143 +73,228 @@ public class MappingDataLoader {
     *
     * @return loaded json object, or null if not found or invalid
     */
-    public static @Nullable JsonObject loadFromDataDir(String name) {
-        File file = new File(Via.getPlatform().getDataFolder(), name);
-        if (!file.exists()) return loadData(name);
+    public static @Nullable JsonObject loadFromDataDir(final String name) {
+        final File file = new File(Via.getPlatform().getDataFolder(), name);
+        if (!file.exists()) {
+            return loadData(name);
+        }

        // Load the file from the platform's directory if present
-        try (FileReader reader = new FileReader(file)) {
+        try (final FileReader reader = new FileReader(file)) {
            return GsonUtil.getGson().fromJson(reader, JsonObject.class);
-        } catch (JsonSyntaxException e) {
+        } 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!");
-            e.printStackTrace();
-        } catch (IOException | JsonIOException e) {
-            e.printStackTrace();
+            throw new RuntimeException(e);
+        } catch (final IOException | JsonIOException e) {
+            throw new RuntimeException(e);
        }
-        return null;
    }

    /**
-     * Loads the file from the bundled resources. Uses the cache if enabled.
+     * Loads the file from the bundled resources.
     *
     * @return loaded json object from bundled resources if present
     */
-    public static @Nullable JsonObject loadData(String name) {
-        return loadData(name, false);
-    }
-
-    /**
-     * Loads the file from the bundled resources. Uses the cache if enabled.
-     *
-     * @param cacheIfEnabled whether loaded files should be cached
-     * @return loaded json object from bundled resources if present
-     */
-    public static @Nullable JsonObject loadData(String name, boolean cacheIfEnabled) {
-        if (cacheJsonMappings) {
-            JsonObject cached = MAPPINGS_CACHE.get(name);
-            if (cached != null) {
-                return cached;
-            }
+    public static @Nullable JsonObject loadData(final String name) {
+        final InputStream stream = getResource(name);
+        if (stream == null) {
+            return null;
        }

-        InputStream stream = getResource(name);
-        if (stream == null) return null;
-
-        InputStreamReader reader = new InputStreamReader(stream);
-        try {
-            JsonObject object = GsonUtil.getGson().fromJson(reader, JsonObject.class);
-            if (cacheIfEnabled && cacheJsonMappings) {
-                MAPPINGS_CACHE.put(name, object);
-            }
-            return object;
-        } finally {
-            try {
-                reader.close();
-            } catch (IOException ignored) {
-                // Ignored
-            }
+        try (final InputStreamReader reader = new InputStreamReader(stream)) {
+            return GsonUtil.getGson().fromJson(reader, JsonObject.class);
+        } catch (final IOException e) {
+            throw new RuntimeException(e);
        }
    }

-    public static void mapIdentifiers(Int2IntBiMap output, JsonObject oldIdentifiers, JsonObject newIdentifiers, @Nullable JsonObject diffIdentifiers, boolean warnOnMissing) {
-        Object2IntMap<String> newIdentifierMap = MappingDataLoader.indexedObjectToMap(newIdentifiers);
-        for (Map.Entry<String, JsonElement> entry : oldIdentifiers.entrySet()) {
-            int value = mapIdentifierEntry(entry, newIdentifierMap, diffIdentifiers, warnOnMissing);
-            if (value != -1) {
-                output.put(Integer.parseInt(entry.getKey()), value);
-            }
+    public static @Nullable CompoundTag loadNBT(final String name, final boolean cache) {
+        if (!cacheValid) {
+            return loadNBTFromFile(name);
+        }
+
+        CompoundTag data = MAPPINGS_CACHE.get(name);
+        if (data != null) {
+            return data;
+        }
+
+        data = loadNBTFromFile(name);
+
+        if (cache && data != null) {
+            MAPPINGS_CACHE.put(name, data);
+        }
+        return data;
+    }
+
+    public static @Nullable CompoundTag loadNBT(final String name) {
+        return loadNBT(name, false);
+    }
+
+    private static @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);
+        } catch (final IOException e) {
+            throw new RuntimeException(e);
        }
    }

-    @Deprecated/*(forRemoval = true)*/
-    public static void mapIdentifiers(int[] output, JsonObject oldIdentifiers, JsonObject newIdentifiers) {
-        mapIdentifiers(output, oldIdentifiers, newIdentifiers, null);
+    public static @Nullable Mappings loadMappings(final CompoundTag mappingsTag, final String key) {
+        return loadMappings(mappingsTag, key, size -> {
+            final int[] array = new int[size];
+            Arrays.fill(array, -1);
+            return array;
+        }, (array, id, mappedId) -> array[id] = mappedId, IntArrayMappings::of);
    }

-    public static void mapIdentifiers(int[] output, JsonObject oldIdentifiers, JsonObject newIdentifiers, @Nullable JsonObject diffIdentifiers, boolean warnOnMissing) {
-        Object2IntMap<String> newIdentifierMap = MappingDataLoader.indexedObjectToMap(newIdentifiers);
-        for (Map.Entry<String, JsonElement> entry : oldIdentifiers.entrySet()) {
-            int value = mapIdentifierEntry(entry, newIdentifierMap, diffIdentifiers, warnOnMissing);
-            if (value != -1) {
-                output[Integer.parseInt(entry.getKey())] = value;
-            }
+    @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
+    ) {
+        final CompoundTag tag = mappingsTag.get(key);
+        if (tag == null) {
+            return null;
        }
-    }

-    public static void mapIdentifiers(int[] output, JsonObject oldIdentifiers, JsonObject newIdentifiers, @Nullable JsonObject diffIdentifiers) {
-        mapIdentifiers(output, oldIdentifiers, newIdentifiers, diffIdentifiers, true);
-    }
+        final ByteTag serializationStragetyTag = tag.get("id");
+        final IntTag mappedSizeTag = tag.get("mappedSize");
+        final byte strategy = serializationStragetyTag.asByte();
+        final V mappings;
+        if (strategy == DIRECT_ID) {
+            final IntArrayTag valuesTag = tag.get("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 int[] shiftsAt = shiftsAtTag.getValue();
+            final int[] shiftsTo = shiftsTag.getValue();
+            final int size = sizeTag.asInt();
+            mappings = holderSupplier.get(size);

-    private static int mapIdentifierEntry(Map.Entry<String, JsonElement> entry, Object2IntMap<String> newIdentifierMap, @Nullable JsonObject diffIdentifiers, boolean warnOnMissing) {
-        int value = newIdentifierMap.getInt(entry.getValue().getAsString());
-        if (value == -1) {
-            // Search in diff mappings
-            if (diffIdentifiers != null) {
-                JsonElement diffElement = diffIdentifiers.get(entry.getKey());
-                if (diffElement != null) {
-                    value = newIdentifierMap.getInt(diffElement.getAsString());
+            // Handle values until first shift
+            if (shiftsAt[0] != 0) {
+                final int to = shiftsAt[0];
+                for (int id = 0; id < to; id++) {
+                    addConsumer.addTo(mappings, id, id);
                }
            }
-            if (value == -1) {
+
+            // Handle shifts
+            for (int i = 0; i < shiftsAt.length; i++) {
+                final int from = shiftsAt[i];
+                final int to = i == shiftsAt.length - 1 ? size : shiftsAt[i + 1];
+                int mappedId = shiftsTo[i];
+                for (int id = from; id < to; id++) {
+                    addConsumer.addTo(mappings, id, mappedId++);
+                }
+            }
+        } else if (strategy == CHANGES_ID) {
+            final IntArrayTag changesAtTag = tag.get("at");
+            final IntArrayTag valuesTag = tag.get("val");
+            final IntTag sizeTag = tag.get("size");
+            final boolean fillBetween = tag.get("nofill") == null;
+            final int[] changesAt = changesAtTag.getValue();
+            final int[] values = valuesTag.getValue();
+            mappings = holderSupplier.get(sizeTag.asInt());
+
+            for (int i = 0; i < changesAt.length; i++) {
+                final int id = changesAt[i];
+                if (fillBetween) {
+                    // Fill from after the last change to before this change with unchanged ids
+                    final int previousId = i != 0 ? changesAt[i - 1] + 1 : 0;
+                    for (int identity = previousId; identity < id; identity++) {
+                        addConsumer.addTo(mappings, identity, identity);
+                    }
+                }
+
+                // Assign the changed value
+                addConsumer.addTo(mappings, id, values[i]);
+            }
+        } else if (strategy == IDENTITY_ID) {
+            final IntTag sizeTag = tag.get("size");
+            return new IdentityMappings(sizeTag.asInt(), mappedSizeTag.asInt());
+        } else {
+            throw new IllegalArgumentException("Unknown serialization strategy: " + strategy);
+        }
+        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) {
+            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 " + entry.getValue() + " :( ");
+                    Via.getPlatform().getLogger().warning("No key for " + val + " :( ");
                }
                return -1;
            }
        }
-        return value;
+        return mappedId;
    }

-    @Deprecated/*(forRemoval = true)*/
-    public static void mapIdentifiers(int[] output, JsonArray oldIdentifiers, JsonArray newIdentifiers, boolean warnOnMissing) {
-        mapIdentifiers(output, oldIdentifiers, newIdentifiers, null, warnOnMissing);
-    }
-
-    public static void mapIdentifiers(int[] output, JsonArray oldIdentifiers, JsonArray newIdentifiers, @Nullable JsonObject diffIdentifiers, boolean warnOnMissing) {
-        Object2IntMap<String> newIdentifierMap = MappingDataLoader.arrayToMap(newIdentifiers);
-        for (int i = 0; i < oldIdentifiers.size(); i++) {
-            JsonElement oldIdentifier = oldIdentifiers.get(i);
-            int mappedId = newIdentifierMap.getInt(oldIdentifier.getAsString());
-            if (mappedId == -1) {
-                // Search in diff mappings
-                if (diffIdentifiers != null) {
-                    JsonElement diffElement = diffIdentifiers.get(oldIdentifier.getAsString());
-                    if (diffElement != null) {
-                        String mappedName = diffElement.getAsString();
-                        if (mappedName.isEmpty()) continue; // "empty" remaps
-
-                        mappedId = newIdentifierMap.getInt(mappedName);
-                    }
-                }
-                if (mappedId == -1) {
-                    if (warnOnMissing && !Via.getConfig().isSuppressConversionWarnings() || Via.getManager().isDebug()) {
-                        Via.getPlatform().getLogger().warning("No key for " + oldIdentifier + " :( ");
-                    }
-                    continue;
-                }
+    @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;
            }
-            output[i] = mappedId;
        }
    }

@@ -222,10 +304,10 @@ public class MappingDataLoader {
     * @param object json object
     * @return map with indexes hashed by their id value
     */
-    public static Object2IntMap<String> indexedObjectToMap(JsonObject object) {
-        Object2IntMap<String> map = new Object2IntOpenHashMap<>(object.size(), .99F);
+    public static Object2IntMap<String> indexedObjectToMap(final JsonObject object) {
+        final Object2IntMap<String> map = new Object2IntOpenHashMap<>(object.size(), .99F);
        map.defaultReturnValue(-1);
-        for (Map.Entry<String, JsonElement> entry : object.entrySet()) {
+        for (final Map.Entry<String, JsonElement> entry : object.entrySet()) {
            map.put(entry.getValue().getAsString(), Integer.parseInt(entry.getKey()));
        }
        return map;
@@ -237,8 +319,8 @@ public class MappingDataLoader {
     * @param array json array
     * @return map with indexes hashed by their id value
     */
-    public static Object2IntMap<String> arrayToMap(JsonArray array) {
-        Object2IntMap<String> map = new Object2IntOpenHashMap<>(array.size(), .99F);
+    public static 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++) {
            map.put(array.get(i).getAsString(), i);
@@ -246,7 +328,25 @@ public class MappingDataLoader {
        return map;
    }

-    public static @Nullable InputStream getResource(String name) {
+    public static @Nullable InputStream getResource(final String name) {
        return MappingDataLoader.class.getClassLoader().getResourceAsStream("assets/viaversion/data/" + name);
    }
+
+    @FunctionalInterface
+    public interface AddConsumer<T> {
+
+        void addTo(T holder, int id, int mappedId);
+    }
+
+    @FunctionalInterface
+    public interface MappingHolderSupplier<T> {
+
+        T get(int expectedSize);
+    }
+
+    @FunctionalInterface
+    public interface MappingsSupplier<T extends Mappings, V> {
+
+        T create(V mappings, int mappedSize);
+    }
 }
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -25,7 +25,6 @@ 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 {
@@ -43,7 +42,7 @@ public interface Mappings {
     *
     * @param id  unmapped id
     * @param def fallback return value
-     * @return mapped id, or -1 if invalid/out of bounds
+     * @return mapped id, or def if invalid/out of bounds
     */
    default int getNewIdOrDefault(int id, int def) {
        final int mappedId = getNewId(id);
@@ -63,11 +62,11 @@ public interface Mappings {
    /**
     * Manually maps a specific id.
     *
-     * @param id    unmapped id
-     * @param newId mapped id
+     * @param id       unmapped id
+     * @param mappedId mapped id
     * @throws IndexOutOfBoundsException if the unmapped id is invalid
     */
-    void setNewId(int id, int newId);
+    void setNewId(int id, int mappedId);

    /**
     * Returns amount of unmapped entries, being the size of the mapping.
@@ -84,8 +83,15 @@ public interface Mappings {
     */
    int mappedSize();

+    /**
+     * Mappings with keys and values swapped.
+     *
+     * @return mappings with keys and values swapped
+     */
+    Mappings inverse();
+
    static <T extends Mappings> Builder<T> builder(final MappingsSupplier<T> supplier) {
-        return new Builder(supplier);
+        return new Builder<>(supplier);
    }

    @FunctionalInterface
@@ -94,6 +100,7 @@ public interface Mappings {
        T supply(int[] mappings, int mappedIds);
    }

+    @Deprecated
    class Builder<T extends Mappings> {

        protected final MappingsSupplier<T> supplier;
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -22,16 +22,16 @@
 */
 package com.viaversion.viaversion.api.data;

-import com.google.gson.JsonArray;
 import it.unimi.dsi.fastutil.ints.IntArrayList;
 import it.unimi.dsi.fastutil.ints.IntList;
+import java.util.List;

 public class ParticleMappings extends FullMappingsBase {
-    private final IntList itemParticleIds = new IntArrayList(2);
+    private final IntList itemParticleIds = new IntArrayList(4);
    private final IntList blockParticleIds = new IntArrayList(4);

-    public ParticleMappings(JsonArray oldMappings, JsonArray newMappings, Mappings mappings) {
-        super(oldMappings, newMappings, mappings);
+    public ParticleMappings(final List<String> unmappedIdentifiers, final List<String> mappedIdentifiers, final Mappings mappings) {
+        super(unmappedIdentifiers, mappedIdentifiers, mappings);
        addBlockParticle("block");
        addBlockParticle("falling_dust");
        addBlockParticle("block_marker");
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -24,9 +24,8 @@ package com.viaversion.viaversion.api.data.entity;

 import com.viaversion.viaversion.api.connection.UserConnection;
 import com.viaversion.viaversion.api.minecraft.entities.EntityType;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.Map;
+import org.checkerframework.checker.nullness.qual.Nullable;

 public interface EntityTracker {

@@ -53,6 +52,14 @@ public interface EntityTracker {
     */
    boolean hasEntity(int id);

+    /**
+     * Returns the tracked entity for the given entity id if present.
+     *
+     * @param entityId entity id
+     * @return tracked entity if tracked
+     */
+    @Nullable TrackedEntity entity(int entityId);
+
    /**
     * Entity type of the entity if tracked.
     * This returning null does not necessarily mean no entity by the id exists.
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -0,0 +1,58 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2023 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.data.entity;
+
+import com.viaversion.viaversion.api.minecraft.entities.EntityType;
+
+public interface TrackedEntity {
+
+    /**
+     * Returns the type of the stored entity.
+     *
+     * @return type of the entity
+     */
+    EntityType entityType();
+
+    /**
+     * Object to hold arbitrary additional data.
+     *
+     * @return entity data
+     */
+    StoredEntityData data();
+
+    /**
+     * Returns whether the stored entity currently has any additional data.
+     *
+     * @return whether the stored entity currently has additional data
+     */
+    boolean hasData();
+
+    /**
+     * Returns whether metadata has already been sent at least once for this entity.
+     *
+     * @return whether metadata has already been sent at least once for this entity
+     */
+    boolean hasSentMetadata();
+
+    void sentMetadata(boolean sentMetadata);
+}
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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 +23,6 @@
 package com.viaversion.viaversion.api.legacy.bossbar;

 import com.viaversion.viaversion.api.connection.UserConnection;
-
 import java.util.Set;
 import java.util.UUID;

@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -54,10 +54,10 @@ public interface BlockChangeRecord {
    short getY(int chunkSectionY);

    /**
+     * Returns the absolute y coordinate - only works for sub 1.16 protocols.
+     *
     * @return absolute y coordinate
-     * @deprecated 1.16+ stores the relative y coordinate
     */
-    @Deprecated
    default short getY() {
        return getY(-1);
    }
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -22,7 +22,7 @@
 */
 package com.viaversion.viaversion.api.minecraft;

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

 public enum BlockFace {
@@ -33,9 +33,9 @@ public enum BlockFace {
    TOP((byte) 0, (byte) 1, (byte) 0, EnumAxis.Y),
    BOTTOM((byte) 0, (byte) -1, (byte) 0, EnumAxis.Y);

-    public static final BlockFace[] HORIZONTAL = new BlockFace[]{NORTH, SOUTH, EAST, WEST};
+    public static final BlockFace[] HORIZONTAL = {NORTH, SOUTH, EAST, WEST};

-    private static final Map<BlockFace, BlockFace> opposites = new HashMap<>();
+    private static final Map<BlockFace, BlockFace> opposites = new EnumMap<>(BlockFace.class);

    static {
        opposites.put(BlockFace.NORTH, BlockFace.SOUTH);
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -33,7 +33,7 @@ public class Position {
        this.z = z;
    }

-    @Deprecated/*(forRemoval=true)*/
+    // @Deprecated/*(forRemoval=true)*/ Just leave this unchecked
    public Position(int x, short y, int z) {
        this(x, (int) y, z);
    }
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -0,0 +1,63 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2023 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 final class Quaternion {
+    private final float x;
+    private final float y;
+    private final float z;
+    private final float w;
+
+    public Quaternion(final float x, final float y, final float z, final float w) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+        this.w = w;
+    }
+
+    public float x() {
+        return x;
+    }
+
+    public float y() {
+        return y;
+    }
+
+    public float z() {
+        return z;
+    }
+
+    public float w() {
+        return w;
+    }
+
+    @Override
+    public String toString() {
+        return "Quaternion{" +
+                "x=" + x +
+                ", y=" + y +
+                ", z=" + z +
+                ", w=" + w +
+                '}';
+    }
+}
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -22,10 +22,9 @@
 */
 package com.viaversion.viaversion.api.minecraft;

-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.HashMap;
 import java.util.Map;
+import org.checkerframework.checker.nullness.qual.Nullable;

 public enum RegistryType {

@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -26,7 +26,7 @@ public final class TagData {
    private final String identifier;
    private final int[] entries;

-    public TagData(String identifier, int[] entries) {
+    public TagData(final String identifier, final int[] entries) {
        this.identifier = identifier;
        this.entries = entries;
    }
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -0,0 +1,47 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2023 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 final class Vector3f {
+    private final float x;
+    private final float y;
+    private final float z;
+
+    public Vector3f(final float x, final float y, final float z) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+    }
+
+    public float x() {
+        return x;
+    }
+
+    public float y() {
+        return y;
+    }
+
+    public float z() {
+        return z;
+    }
+}
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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);
    }
@@ -42,4 +46,6 @@ public interface BlockEntity {
    int typeId();

    @Nullable CompoundTag tag();
+
+    BlockEntity withTypeId(int typeId);
 }
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -56,4 +56,9 @@ public final class BlockEntityImpl implements BlockEntity {
    public CompoundTag tag() {
        return tag;
    }
+
+    @Override
+    public BlockEntity withTypeId(int typeId) {
+        return new BlockEntityImpl(packedXZ, y, typeId, tag);
+    }
 }
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -24,10 +24,9 @@ package com.viaversion.viaversion.api.minecraft.chunks;

 import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import com.viaversion.viaversion.api.minecraft.blockentity.BlockEntity;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.BitSet;
 import java.util.List;
+import org.checkerframework.checker.nullness.qual.Nullable;

 //TODO Move methods from distinctly different versions to different objects/interfaces
 public class BaseChunk implements Chunk {
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -24,10 +24,9 @@ package com.viaversion.viaversion.api.minecraft.chunks;

 import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import com.viaversion.viaversion.api.minecraft.blockentity.BlockEntity;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.BitSet;
 import java.util.List;
+import org.checkerframework.checker.nullness.qual.Nullable;

 // TODO specialized sub interfaces
 public interface Chunk {
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -24,10 +24,9 @@ package com.viaversion.viaversion.api.minecraft.chunks;

 import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import com.viaversion.viaversion.api.minecraft.blockentity.BlockEntity;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.BitSet;
 import java.util.List;
+import org.checkerframework.checker.nullness.qual.Nullable;

 public class Chunk1_18 implements Chunk {
    protected final int x;
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -40,6 +40,18 @@ public interface ChunkSection {
        return y << 8 | z << 4 | x;
    }

+    static int xFromIndex(int idx) {
+        return idx & 0xF;
+    }
+
+    static int yFromIndex(int idx) {
+        return idx >> 8 & 0xF;
+    }
+
+    static int zFromIndex(int idx) {
+        return idx >> 4 & 0xF;
+    }
+
    @Deprecated/*(forRemoval = true)*/
    default int getFlatBlock(int idx) {
        return palette(PaletteType.BLOCKS).idAt(idx);
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -22,9 +22,8 @@
 */
 package com.viaversion.viaversion.api.minecraft.chunks;

-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.EnumMap;
+import org.checkerframework.checker.nullness.qual.Nullable;

 public class ChunkSectionImpl implements ChunkSection {

@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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);
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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;
+        }
+    }
+
 }
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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 +23,6 @@
 package com.viaversion.viaversion.api.minecraft.entities;

 import com.viaversion.viaversion.api.Via;
-
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Optional;
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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 +23,6 @@
 package com.viaversion.viaversion.api.minecraft.entities;

 import com.viaversion.viaversion.api.Via;
-
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Optional;
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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.minecraft.entities;

 import com.viaversion.viaversion.api.Via;
-
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Optional;
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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 +23,6 @@
 package com.viaversion.viaversion.api.minecraft.entities;

 import com.viaversion.viaversion.api.Via;
-
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Optional;
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -25,9 +25,8 @@ package com.viaversion.viaversion.api.minecraft.entities;
 import com.google.common.base.Preconditions;
 import com.viaversion.viaversion.api.protocol.Protocol;
 import com.viaversion.viaversion.util.EntityTypeUtil;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.Locale;
+import org.checkerframework.checker.nullness.qual.Nullable;

 public enum Entity1_19Types implements EntityType {

@@ -0,0 +1,274 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2023 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.entities;
+
+import com.google.common.base.Preconditions;
+import com.viaversion.viaversion.api.protocol.Protocol;
+import com.viaversion.viaversion.util.EntityTypeUtil;
+import java.util.Locale;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+public enum Entity1_19_3Types implements EntityType {
+
+    ENTITY(null, null),
+
+    AREA_EFFECT_CLOUD(ENTITY),
+    END_CRYSTAL(ENTITY),
+    EVOKER_FANGS(ENTITY),
+    EXPERIENCE_ORB(ENTITY),
+    EYE_OF_ENDER(ENTITY),
+    FALLING_BLOCK(ENTITY),
+    FIREWORK_ROCKET(ENTITY),
+    ITEM(ENTITY),
+    LLAMA_SPIT(ENTITY),
+    TNT(ENTITY),
+    SHULKER_BULLET(ENTITY),
+    FISHING_BOBBER(ENTITY),
+
+    LIVINGENTITY(ENTITY, null),
+    ARMOR_STAND(LIVINGENTITY),
+    MARKER(ENTITY),
+    PLAYER(LIVINGENTITY),
+
+    ABSTRACT_INSENTIENT(LIVINGENTITY, null),
+    ENDER_DRAGON(ABSTRACT_INSENTIENT),
+
+    BEE(ABSTRACT_INSENTIENT),
+
+    ABSTRACT_CREATURE(ABSTRACT_INSENTIENT, null),
+
+    ABSTRACT_AGEABLE(ABSTRACT_CREATURE, null),
+    VILLAGER(ABSTRACT_AGEABLE),
+    WANDERING_TRADER(ABSTRACT_AGEABLE),
+
+    // Animals
+    ABSTRACT_ANIMAL(ABSTRACT_AGEABLE, null),
+    AXOLOTL(ABSTRACT_ANIMAL),
+    DOLPHIN(ABSTRACT_INSENTIENT),
+    CHICKEN(ABSTRACT_ANIMAL),
+    COW(ABSTRACT_ANIMAL),
+    MOOSHROOM(COW),
+    PANDA(ABSTRACT_INSENTIENT),
+    PIG(ABSTRACT_ANIMAL),
+    POLAR_BEAR(ABSTRACT_ANIMAL),
+    RABBIT(ABSTRACT_ANIMAL),
+    SHEEP(ABSTRACT_ANIMAL),
+    TURTLE(ABSTRACT_ANIMAL),
+    FOX(ABSTRACT_ANIMAL),
+    FROG(ABSTRACT_ANIMAL),
+    GOAT(ABSTRACT_ANIMAL),
+
+    ABSTRACT_TAMEABLE_ANIMAL(ABSTRACT_ANIMAL, null),
+    CAT(ABSTRACT_TAMEABLE_ANIMAL),
+    OCELOT(ABSTRACT_TAMEABLE_ANIMAL),
+    WOLF(ABSTRACT_TAMEABLE_ANIMAL),
+
+    ABSTRACT_PARROT(ABSTRACT_TAMEABLE_ANIMAL, null),
+    PARROT(ABSTRACT_PARROT),
+
+    // Horses
+    ABSTRACT_HORSE(ABSTRACT_ANIMAL, null),
+    CHESTED_HORSE(ABSTRACT_HORSE, null),
+    DONKEY(CHESTED_HORSE),
+    MULE(CHESTED_HORSE),
+    LLAMA(CHESTED_HORSE),
+    TRADER_LLAMA(CHESTED_HORSE),
+    HORSE(ABSTRACT_HORSE),
+    SKELETON_HORSE(ABSTRACT_HORSE),
+    ZOMBIE_HORSE(ABSTRACT_HORSE),
+    CAMEL(ABSTRACT_HORSE),
+
+    // Golem
+    ABSTRACT_GOLEM(ABSTRACT_CREATURE, null),
+    SNOW_GOLEM(ABSTRACT_GOLEM),
+    IRON_GOLEM(ABSTRACT_GOLEM),
+    SHULKER(ABSTRACT_GOLEM),
+
+    // Fish
+    ABSTRACT_FISHES(ABSTRACT_CREATURE, null),
+    COD(ABSTRACT_FISHES),
+    PUFFERFISH(ABSTRACT_FISHES),
+    SALMON(ABSTRACT_FISHES),
+    TROPICAL_FISH(ABSTRACT_FISHES),
+
+    // Monsters
+    ABSTRACT_MONSTER(ABSTRACT_CREATURE, null),
+    BLAZE(ABSTRACT_MONSTER),
+    CREEPER(ABSTRACT_MONSTER),
+    ENDERMITE(ABSTRACT_MONSTER),
+    ENDERMAN(ABSTRACT_MONSTER),
+    GIANT(ABSTRACT_MONSTER),
+    SILVERFISH(ABSTRACT_MONSTER),
+    VEX(ABSTRACT_MONSTER),
+    WITCH(ABSTRACT_MONSTER),
+    WITHER(ABSTRACT_MONSTER),
+    RAVAGER(ABSTRACT_MONSTER),
+
+    ABSTRACT_PIGLIN(ABSTRACT_MONSTER, null),
+
+    PIGLIN(ABSTRACT_PIGLIN),
+    PIGLIN_BRUTE(ABSTRACT_PIGLIN),
+
+    HOGLIN(ABSTRACT_ANIMAL),
+    STRIDER(ABSTRACT_ANIMAL),
+    TADPOLE(ABSTRACT_FISHES),
+    ZOGLIN(ABSTRACT_MONSTER),
+    WARDEN(ABSTRACT_MONSTER),
+
+    // Illagers
+    ABSTRACT_ILLAGER_BASE(ABSTRACT_MONSTER, null),
+    ABSTRACT_EVO_ILLU_ILLAGER(ABSTRACT_ILLAGER_BASE, null),
+    EVOKER(ABSTRACT_EVO_ILLU_ILLAGER),
+    ILLUSIONER(ABSTRACT_EVO_ILLU_ILLAGER),
+    VINDICATOR(ABSTRACT_ILLAGER_BASE),
+    PILLAGER(ABSTRACT_ILLAGER_BASE),
+
+    // Skeletons
+    ABSTRACT_SKELETON(ABSTRACT_MONSTER, null),
+    SKELETON(ABSTRACT_SKELETON),
+    STRAY(ABSTRACT_SKELETON),
+    WITHER_SKELETON(ABSTRACT_SKELETON),
+
+    // Guardians
+    GUARDIAN(ABSTRACT_MONSTER),
+    ELDER_GUARDIAN(GUARDIAN),
+
+    // Spiders
+    SPIDER(ABSTRACT_MONSTER),
+    CAVE_SPIDER(SPIDER),
+
+    // Zombies
+    ZOMBIE(ABSTRACT_MONSTER),
+    DROWNED(ZOMBIE),
+    HUSK(ZOMBIE),
+    ZOMBIFIED_PIGLIN(ZOMBIE),
+    ZOMBIE_VILLAGER(ZOMBIE),
+
+    // Flying entities
+    ABSTRACT_FLYING(ABSTRACT_INSENTIENT, null),
+    GHAST(ABSTRACT_FLYING),
+    PHANTOM(ABSTRACT_FLYING),
+
+    ABSTRACT_AMBIENT(ABSTRACT_INSENTIENT, null),
+    BAT(ABSTRACT_AMBIENT),
+    ALLAY(ABSTRACT_CREATURE),
+
+    ABSTRACT_WATERMOB(ABSTRACT_INSENTIENT, null),
+    SQUID(ABSTRACT_WATERMOB),
+    GLOW_SQUID(SQUID),
+
+    // Slimes
+    SLIME(ABSTRACT_INSENTIENT),
+    MAGMA_CUBE(SLIME),
+
+    // Hangable objects
+    ABSTRACT_HANGING(ENTITY, null),
+    LEASH_KNOT(ABSTRACT_HANGING),
+    ITEM_FRAME(ABSTRACT_HANGING),
+    GLOW_ITEM_FRAME(ITEM_FRAME),
+    PAINTING(ABSTRACT_HANGING),
+
+    ABSTRACT_LIGHTNING(ENTITY, null),
+    LIGHTNING_BOLT(ABSTRACT_LIGHTNING),
+
+    // Arrows
+    ABSTRACT_ARROW(ENTITY, null),
+    ARROW(ABSTRACT_ARROW),
+    SPECTRAL_ARROW(ABSTRACT_ARROW),
+    TRIDENT(ABSTRACT_ARROW),
+
+    // Fireballs
+    ABSTRACT_FIREBALL(ENTITY, null),
+    DRAGON_FIREBALL(ABSTRACT_FIREBALL),
+    FIREBALL(ABSTRACT_FIREBALL),
+    SMALL_FIREBALL(ABSTRACT_FIREBALL),
+    WITHER_SKULL(ABSTRACT_FIREBALL),
+
+    // Projectiles
+    PROJECTILE_ABSTRACT(ENTITY, null),
+    SNOWBALL(PROJECTILE_ABSTRACT),
+    ENDER_PEARL(PROJECTILE_ABSTRACT),
+    EGG(PROJECTILE_ABSTRACT),
+    POTION(PROJECTILE_ABSTRACT),
+    EXPERIENCE_BOTTLE(PROJECTILE_ABSTRACT),
+
+    // Vehicles
+    MINECART_ABSTRACT(ENTITY, null),
+    CHESTED_MINECART_ABSTRACT(MINECART_ABSTRACT, null),
+    CHEST_MINECART(CHESTED_MINECART_ABSTRACT),
+    HOPPER_MINECART(CHESTED_MINECART_ABSTRACT),
+    MINECART(MINECART_ABSTRACT),
+    FURNACE_MINECART(MINECART_ABSTRACT),
+    COMMAND_BLOCK_MINECART(MINECART_ABSTRACT),
+    TNT_MINECART(MINECART_ABSTRACT),
+    SPAWNER_MINECART(MINECART_ABSTRACT),
+    BOAT(ENTITY),
+    CHEST_BOAT(BOAT);
+
+    private static final EntityType[] TYPES = EntityTypeUtil.createSizedArray(values());
+    private final EntityType parent;
+    private final String identifier;
+    private int id = -1;
+
+    Entity1_19_3Types(final EntityType parent) {
+        this.parent = parent;
+        this.identifier = "minecraft:" + name().toLowerCase(Locale.ROOT);
+    }
+
+    Entity1_19_3Types(final EntityType parent, @Nullable final String identifier) {
+        this.parent = parent;
+        this.identifier = identifier;
+    }
+
+    @Override
+    public int getId() {
+        if (id == -1) {
+            throw new IllegalStateException("Ids have not been initialized yet (type " + name() + ")");
+        }
+        return id;
+    }
+
+    @Override
+    public String identifier() {
+        Preconditions.checkArgument(identifier != null, "Called identifier method on abstract type");
+        return identifier;
+    }
+
+    @Override
+    public @Nullable EntityType getParent() {
+        return parent;
+    }
+
+    @Override
+    public boolean isAbstractType() {
+        return identifier == null;
+    }
+
+    public static EntityType getTypeFromId(final int typeId) {
+        return EntityTypeUtil.getTypeFromId(TYPES, typeId, ENTITY);
+    }
+
+    public static void initialize(final Protocol<?, ?, ?, ?> protocol) {
+        EntityTypeUtil.initialize(values(), TYPES, protocol, (type, id) -> type.id = id);
+    }
+}
@@ -0,0 +1,281 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2023 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.entities;
+
+import com.google.common.base.Preconditions;
+import com.viaversion.viaversion.api.protocol.Protocol;
+import com.viaversion.viaversion.util.EntityTypeUtil;
+import java.util.Locale;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+public enum Entity1_19_4Types implements EntityType {
+
+    ENTITY(null, null),
+
+    AREA_EFFECT_CLOUD(ENTITY),
+    END_CRYSTAL(ENTITY),
+    EVOKER_FANGS(ENTITY),
+    EXPERIENCE_ORB(ENTITY),
+    EYE_OF_ENDER(ENTITY),
+    FALLING_BLOCK(ENTITY),
+    FIREWORK_ROCKET(ENTITY),
+    ITEM(ENTITY),
+    LLAMA_SPIT(ENTITY),
+    TNT(ENTITY),
+    SHULKER_BULLET(ENTITY),
+    FISHING_BOBBER(ENTITY),
+
+    LIVINGENTITY(ENTITY, null),
+    ARMOR_STAND(LIVINGENTITY),
+    MARKER(ENTITY),
+    PLAYER(LIVINGENTITY),
+
+    DISPLAY(ENTITY, null),
+    BLOCK_DISPLAY(DISPLAY),
+    ITEM_DISPLAY(DISPLAY),
+    TEXT_DISPLAY(DISPLAY),
+    INTERACTION(ENTITY),
+
+    ABSTRACT_INSENTIENT(LIVINGENTITY, null),
+    ENDER_DRAGON(ABSTRACT_INSENTIENT),
+
+    BEE(ABSTRACT_INSENTIENT),
+
+    ABSTRACT_CREATURE(ABSTRACT_INSENTIENT, null),
+
+    ABSTRACT_AGEABLE(ABSTRACT_CREATURE, null),
+    VILLAGER(ABSTRACT_AGEABLE),
+    WANDERING_TRADER(ABSTRACT_AGEABLE),
+
+    // Animals
+    ABSTRACT_ANIMAL(ABSTRACT_AGEABLE, null),
+    AXOLOTL(ABSTRACT_ANIMAL),
+    DOLPHIN(ABSTRACT_INSENTIENT),
+    CHICKEN(ABSTRACT_ANIMAL),
+    COW(ABSTRACT_ANIMAL),
+    MOOSHROOM(COW),
+    PANDA(ABSTRACT_INSENTIENT),
+    PIG(ABSTRACT_ANIMAL),
+    POLAR_BEAR(ABSTRACT_ANIMAL),
+    RABBIT(ABSTRACT_ANIMAL),
+    SHEEP(ABSTRACT_ANIMAL),
+    TURTLE(ABSTRACT_ANIMAL),
+    FOX(ABSTRACT_ANIMAL),
+    FROG(ABSTRACT_ANIMAL),
+    GOAT(ABSTRACT_ANIMAL),
+    SNIFFER(ABSTRACT_ANIMAL),
+
+    ABSTRACT_TAMEABLE_ANIMAL(ABSTRACT_ANIMAL, null),
+    CAT(ABSTRACT_TAMEABLE_ANIMAL),
+    OCELOT(ABSTRACT_TAMEABLE_ANIMAL),
+    WOLF(ABSTRACT_TAMEABLE_ANIMAL),
+
+    ABSTRACT_PARROT(ABSTRACT_TAMEABLE_ANIMAL, null),
+    PARROT(ABSTRACT_PARROT),
+
+    // Horses
+    ABSTRACT_HORSE(ABSTRACT_ANIMAL, null),
+    CHESTED_HORSE(ABSTRACT_HORSE, null),
+    DONKEY(CHESTED_HORSE),
+    MULE(CHESTED_HORSE),
+    LLAMA(CHESTED_HORSE),
+    TRADER_LLAMA(CHESTED_HORSE),
+    HORSE(ABSTRACT_HORSE),
+    SKELETON_HORSE(ABSTRACT_HORSE),
+    ZOMBIE_HORSE(ABSTRACT_HORSE),
+    CAMEL(ABSTRACT_HORSE),
+
+    // Golem
+    ABSTRACT_GOLEM(ABSTRACT_CREATURE, null),
+    SNOW_GOLEM(ABSTRACT_GOLEM),
+    IRON_GOLEM(ABSTRACT_GOLEM),
+    SHULKER(ABSTRACT_GOLEM),
+
+    // Fish
+    ABSTRACT_FISHES(ABSTRACT_CREATURE, null),
+    COD(ABSTRACT_FISHES),
+    PUFFERFISH(ABSTRACT_FISHES),
+    SALMON(ABSTRACT_FISHES),
+    TROPICAL_FISH(ABSTRACT_FISHES),
+
+    // Monsters
+    ABSTRACT_MONSTER(ABSTRACT_CREATURE, null),
+    BLAZE(ABSTRACT_MONSTER),
+    CREEPER(ABSTRACT_MONSTER),
+    ENDERMITE(ABSTRACT_MONSTER),
+    ENDERMAN(ABSTRACT_MONSTER),
+    GIANT(ABSTRACT_MONSTER),
+    SILVERFISH(ABSTRACT_MONSTER),
+    VEX(ABSTRACT_MONSTER),
+    WITCH(ABSTRACT_MONSTER),
+    WITHER(ABSTRACT_MONSTER),
+    RAVAGER(ABSTRACT_MONSTER),
+
+    ABSTRACT_PIGLIN(ABSTRACT_MONSTER, null),
+
+    PIGLIN(ABSTRACT_PIGLIN),
+    PIGLIN_BRUTE(ABSTRACT_PIGLIN),
+
+    HOGLIN(ABSTRACT_ANIMAL),
+    STRIDER(ABSTRACT_ANIMAL),
+    TADPOLE(ABSTRACT_FISHES),
+    ZOGLIN(ABSTRACT_MONSTER),
+    WARDEN(ABSTRACT_MONSTER),
+
+    // Illagers
+    ABSTRACT_ILLAGER_BASE(ABSTRACT_MONSTER, null),
+    ABSTRACT_EVO_ILLU_ILLAGER(ABSTRACT_ILLAGER_BASE, null),
+    EVOKER(ABSTRACT_EVO_ILLU_ILLAGER),
+    ILLUSIONER(ABSTRACT_EVO_ILLU_ILLAGER),
+    VINDICATOR(ABSTRACT_ILLAGER_BASE),
+    PILLAGER(ABSTRACT_ILLAGER_BASE),
+
+    // Skeletons
+    ABSTRACT_SKELETON(ABSTRACT_MONSTER, null),
+    SKELETON(ABSTRACT_SKELETON),
+    STRAY(ABSTRACT_SKELETON),
+    WITHER_SKELETON(ABSTRACT_SKELETON),
+
+    // Guardians
+    GUARDIAN(ABSTRACT_MONSTER),
+    ELDER_GUARDIAN(GUARDIAN),
+
+    // Spiders
+    SPIDER(ABSTRACT_MONSTER),
+    CAVE_SPIDER(SPIDER),
+
+    // Zombies
+    ZOMBIE(ABSTRACT_MONSTER),
+    DROWNED(ZOMBIE),
+    HUSK(ZOMBIE),
+    ZOMBIFIED_PIGLIN(ZOMBIE),
+    ZOMBIE_VILLAGER(ZOMBIE),
+
+    // Flying entities
+    ABSTRACT_FLYING(ABSTRACT_INSENTIENT, null),
+    GHAST(ABSTRACT_FLYING),
+    PHANTOM(ABSTRACT_FLYING),
+
+    ABSTRACT_AMBIENT(ABSTRACT_INSENTIENT, null),
+    BAT(ABSTRACT_AMBIENT),
+    ALLAY(ABSTRACT_CREATURE),
+
+    ABSTRACT_WATERMOB(ABSTRACT_INSENTIENT, null),
+    SQUID(ABSTRACT_WATERMOB),
+    GLOW_SQUID(SQUID),
+
+    // Slimes
+    SLIME(ABSTRACT_INSENTIENT),
+    MAGMA_CUBE(SLIME),
+
+    // Hangable objects
+    ABSTRACT_HANGING(ENTITY, null),
+    LEASH_KNOT(ABSTRACT_HANGING),
+    ITEM_FRAME(ABSTRACT_HANGING),
+    GLOW_ITEM_FRAME(ITEM_FRAME),
+    PAINTING(ABSTRACT_HANGING),
+
+    ABSTRACT_LIGHTNING(ENTITY, null),
+    LIGHTNING_BOLT(ABSTRACT_LIGHTNING),
+
+    // Arrows
+    ABSTRACT_ARROW(ENTITY, null),
+    ARROW(ABSTRACT_ARROW),
+    SPECTRAL_ARROW(ABSTRACT_ARROW),
+    TRIDENT(ABSTRACT_ARROW),
+
+    // Fireballs
+    ABSTRACT_FIREBALL(ENTITY, null),
+    DRAGON_FIREBALL(ABSTRACT_FIREBALL),
+    FIREBALL(ABSTRACT_FIREBALL),
+    SMALL_FIREBALL(ABSTRACT_FIREBALL),
+    WITHER_SKULL(ABSTRACT_FIREBALL),
+
+    // Projectiles
+    PROJECTILE_ABSTRACT(ENTITY, null),
+    SNOWBALL(PROJECTILE_ABSTRACT),
+    ENDER_PEARL(PROJECTILE_ABSTRACT),
+    EGG(PROJECTILE_ABSTRACT),
+    POTION(PROJECTILE_ABSTRACT),
+    EXPERIENCE_BOTTLE(PROJECTILE_ABSTRACT),
+
+    // Vehicles
+    MINECART_ABSTRACT(ENTITY, null),
+    CHESTED_MINECART_ABSTRACT(MINECART_ABSTRACT, null),
+    CHEST_MINECART(CHESTED_MINECART_ABSTRACT),
+    HOPPER_MINECART(CHESTED_MINECART_ABSTRACT),
+    MINECART(MINECART_ABSTRACT),
+    FURNACE_MINECART(MINECART_ABSTRACT),
+    COMMAND_BLOCK_MINECART(MINECART_ABSTRACT),
+    TNT_MINECART(MINECART_ABSTRACT),
+    SPAWNER_MINECART(MINECART_ABSTRACT),
+    BOAT(ENTITY),
+    CHEST_BOAT(BOAT);
+
+    private static final EntityType[] TYPES = EntityTypeUtil.createSizedArray(values());
+    private final EntityType parent;
+    private final String identifier;
+    private int id = -1;
+
+    Entity1_19_4Types(final EntityType parent) {
+        this.parent = parent;
+        this.identifier = "minecraft:" + name().toLowerCase(Locale.ROOT);
+    }
+
+    Entity1_19_4Types(final EntityType parent, @Nullable final String identifier) {
+        this.parent = parent;
+        this.identifier = identifier;
+    }
+
+    @Override
+    public int getId() {
+        if (id == -1) {
+            throw new IllegalStateException("Ids have not been initialized yet (type " + name() + ")");
+        }
+        return id;
+    }
+
+    @Override
+    public String identifier() {
+        Preconditions.checkArgument(identifier != null, "Called identifier method on abstract type");
+        return identifier;
+    }
+
+    @Override
+    public @Nullable EntityType getParent() {
+        return parent;
+    }
+
+    @Override
+    public boolean isAbstractType() {
+        return identifier == null;
+    }
+
+    public static EntityType getTypeFromId(final int typeId) {
+        return EntityTypeUtil.getTypeFromId(TYPES, typeId, ENTITY);
+    }
+
+    public static void initialize(final Protocol<?, ?, ?, ?> protocol) {
+        EntityTypeUtil.initialize(values(), TYPES, protocol, (type, id) -> type.id = id);
+    }
+}
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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
@@ -24,9 +24,8 @@ package com.viaversion.viaversion.api.minecraft.item;

 import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import com.google.gson.annotations.SerializedName;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.Objects;
+import org.checkerframework.checker.nullness.qual.Nullable;

 public class DataItem implements Item {
    @SerializedName(value = "identifier", alternate = "id")
@@ -1,6 +1,6 @@
 /*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
- * Copyright (C) 2016-2022 ViaVersion and contributors
+ * Copyright (C) 2016-2023 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