5.3.2 Release

Fixes ViaVersion/ViaVersion#4457

.github/FUNDING.yml

@@ -1,2 +1,3 @@
 github: kennytv
 patreon: kennytv
+custom: ['https://florianmichael.de/donate']

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -19,10 +19,11 @@ body:
 
   - type: textarea
     attributes:
-      label: Console Error
+      label: Server/Client Error
       description: |
         If you encounter warnings/errors in your console, **paste them with https://mclo.gs/ and put the paste link here**.
         If the error is small/less than 10 lines, you may put it directly into this field.
+        **Important**: If you are kicked for `Network Protocol Error` or an encoder/decoder exception, please click the `Open Report Directory` button on your client and paste the newest disconnect file contents.
       value: |
         ```
         Put the mclo.gs link or text here.
@@ -38,7 +39,7 @@ body:
         Describe the unexpected behavior.
         If you want to attach screenshots, use the comment field at the bottom of the page.
       placeholder: |
-        Example: "Placing signs on 1.13.2 causes text to disappear."
+        Example: "Placing signs on 1.16.5 causes text to disappear."
     validations:
       required: true
 
@@ -49,7 +50,7 @@ body:
         List the steps on how we can reproduce the issue. Make sure we can easily understand what you mean with each step.
       placeholder: |
         Example:
-        1. Login with a 1.13.2 client
+        1. Login with a 1.16.5 client
         2. Place a sign
         3. The sign text is displayed wrong
     validations:

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/build.yml

@@ -6,13 +6,15 @@ jobs:
   build:
     if: ${{ github.event_name != 'pull_request' || github.repository != github.event.pull_request.head.repo.full_name }}
 
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
 
     steps:
     - name: Checkout Repository
       uses: actions/checkout@v4
-    - name: Validate Gradle Wrapper
-      uses: gradle/wrapper-validation-action@v2
+      with:
+        persist-credentials: false
+    - name: Set up Gradle
+      uses: gradle/actions/setup-gradle@v4
     - name: Set up JDK 17
       uses: actions/setup-java@v4
       with:
@@ -20,4 +22,4 @@ jobs:
         java-version: 17
         check-latest: true
     - name: Build with Gradle
-      run: ./gradlew build
+      run: ./gradlew build --refresh-dependencies

.github/workflows/publish.yml

@@ -8,12 +8,14 @@ on:
 jobs:
   publish:
     if: github.repository_owner == 'ViaVersion'
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v4
-      - name: Validate Gradle Wrapper
-        uses: gradle/wrapper-validation-action@v2
+        with:
+          persist-credentials: false
+      - name: Set up Gradle
+        uses: gradle/actions/setup-gradle@v4
       - name: Set up JDK 17
         uses: actions/setup-java@v4
         with:
@@ -24,4 +26,4 @@ jobs:
         env:
           HANGAR_TOKEN: ${{ secrets.HANGAR_TOKEN }}
           MODRINTH_TOKEN: ${{ secrets.MODRINTH_TOKEN }}
-        run: ./gradlew build modrinth publishAllPublicationsToHangar --stacktrace
+        run: ./gradlew build modrinth publishAllPublicationsToHangar  --refresh-dependencies --stacktrace

.github/workflows/update-gradle-wrapper.yml

@@ -0,0 +1,16 @@
+name: Update Gradle Wrapper
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 0 * * 0"
+
+jobs:
+  update-gradle-wrapper:
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+      - name: Update Gradle Wrapper
+        uses: gradle-update/update-gradle-wrapper-action@v2

.gitignore

@@ -107,3 +107,9 @@ nbdist/
 nbactions.xml
 nb-configuration.xml
 .nb-gradle/
+
+### MacOS ###
+.DS_Store
+
+### Run Folder (ViaProxy) ###
+common/run/

README.md

@@ -1,12 +1,12 @@
 # ViaBackwards
 
 [![Latest Release](https://img.shields.io/github/v/release/ViaVersion/ViaBackwards)](https://github.com/ViaVersion/ViaBackwards/releases)
-[![Build Status](https://github.com/ViaVersion/ViaBackwards/actions/workflows/gradle.yml/badge.svg?branch=master)](https://github.com/ViaVersion/ViaBackwards/actions)
+[![Build Status](https://github.com/ViaVersion/ViaBackwards/actions/workflows/build.yml/badge.svg?branch=master)](https://github.com/ViaVersion/ViaBackwards/actions)
 [![Discord](https://img.shields.io/badge/chat-on%20discord-blue.svg)](https://viaversion.com/discord)
 
-**Allows older Minecraft client versions to connect to newer server versions.**
+**Allows the connection of older clients to newer server versions for Minecraft servers.**
 
-Requires [ViaVersion](https://hangar.papermc.io/ViaVersion/ViaVersion) to be installed..
+Requires [ViaVersion](https://hangar.papermc.io/ViaVersion/ViaVersion) to be installed.
 
 Supported Versions
 -
@@ -14,7 +14,14 @@ As a plugin, ViaBackwards runs on servers on releases 1.10-latest. You can also
 - in **ViaFabric**, put ViaBackwards into the `mods` folder
 - in **ViaFabricPlus**, put ViaBackwards into the `ViaFabricPlus/jars` folder
 
-See [HERE](https://github.com/ViaVersion) for an overview of the different Via* projects.
+See [HERE](https://viaversion.com) for an overview of the different Via* projects.
+
+Snapshot support
+--------
+**ViaBackwards will only be released a few days *after* a Minecraft update** unless the protocol changes of the update were trivial. If you want early-access, usually days or even weeks before the final release, you can subscribe to either:
+- [GitHub Sponsors](https://github.com/sponsors/kennytv/sponsorships?sponsor=kennytv&tier_id=385613&preview=false) (preferred option. Use the `/verify` command on this Discord after), or alternatively
+- [Patreon](https://www.patreon.com/kennytv/membership) (see the highest tier and make sure to link Patreon to your Discord account under Settings->Connections)
+  This also includes access to a private repository with the code, which will be pushed to the public repository after the given delay on a Minecraft update.
 
 Releases/Dev Builds
 -
@@ -35,7 +42,7 @@ Known issues
   1.17 will not be able to see or interact with blocks below y=0 and above y=255
 * <1.17 clients on 1.17+ servers might experience inventory desyncs on certain inventory click actions
 * Sound mappings are incomplete ([see here](https://github.com/ViaVersion/ViaBackwards/issues/326))
-* <1.19.4 clients on 1.20+ servers won't be able to use the smithing table, this can be fixed by
+* <1.19.4 clients on 1.20+ servers won't be able to use the smithing table. This can be fixed by
   installing [AxSmithing](https://github.com/ViaVersionAddons/AxSmithing)
 
 Other Links

build-logic/build.gradle.kts

@@ -8,5 +8,5 @@ repositories {
 
 dependencies {
     // version must be manually kept in sync with the one in root project settings.gradle.kts
-    implementation("com.github.johnrengelman", "shadow", "8.1.1")
+    implementation("com.gradleup.shadow", "shadow-gradle-plugin", "8.3.6")
 }

build-logic/src/main/kotlin/extensions.kt

@@ -1,33 +1,23 @@
-import org.gradle.api.JavaVersion
 import org.gradle.api.Project
 import org.gradle.api.plugins.JavaPluginExtension
-import java.io.ByteArrayOutputStream
+import org.gradle.jvm.toolchain.JavaLanguageVersion
 
 fun Project.latestCommitHash(): String {
-    val byteOut = ByteArrayOutputStream()
-    exec {
-        commandLine = listOf("git", "rev-parse", "--short", "HEAD")
-        standardOutput = byteOut
-    }
-    return byteOut.toString(Charsets.UTF_8.name()).trim()
+    return runGitCommand(listOf("rev-parse", "--short", "HEAD"))
 }
 
 fun Project.latestCommitMessage(): String {
-    val byteOut = ByteArrayOutputStream()
-    exec {
-        commandLine = listOf("git", "log", "-1", "--pretty=%B")
-        standardOutput = byteOut
-    }
-    return byteOut.toString(Charsets.UTF_8.name()).trim()
+    return runGitCommand(listOf("log", "-1", "--pretty=%B"))
 }
 
 fun Project.branchName(): String {
-    val byteOut = ByteArrayOutputStream()
-    exec {
-        commandLine = listOf("git", "rev-parse", "--abbrev-ref", "HEAD")
-        standardOutput = byteOut
-    }
-    return byteOut.toString(Charsets.UTF_8.name()).trim()
+    return runGitCommand(listOf("rev-parse", "--abbrev-ref", "HEAD"))
+}
+
+fun Project.runGitCommand(args: List<String>): String {
+    return providers.exec {
+        commandLine = listOf("git") + args
+    }.standardOutput.asBytes.get().toString(Charsets.UTF_8).trim()
 }
 
 fun Project.parseMinecraftSnapshotVersion(version: String): String? {
@@ -40,6 +30,5 @@ fun Project.parseMinecraftSnapshotVersion(version: String): String? {
 }
 
 fun JavaPluginExtension.javaTarget(version: Int) {
-    sourceCompatibility = JavaVersion.toVersion(version)
-    targetCompatibility = JavaVersion.toVersion(version)
+    toolchain.languageVersion.set(JavaLanguageVersion.of(version))
 }

build-logic/src/main/kotlin/vb.base-conventions.gradle.kts

@@ -5,8 +5,10 @@ plugins {
 tasks {
     // Variable replacements
     processResources {
-        filesMatching(listOf("plugin.yml", "fabric.mod.json")) {
-            expand("version" to project.version, "description" to project.description, "url" to "https://viaversion.com/backwards")
+        val ver = project.version.toString()
+        val desc = project.description
+        filesMatching(listOf("plugin.yml", "META-INF/sponge_plugins.json", "fabric.mod.json")) {
+            expand("version" to ver, "description" to desc)
         }
     }
     javadoc {
@@ -22,4 +24,4 @@ tasks {
 java {
     javaTarget(17)
     withSourcesJar()
-}
+}

build-logic/src/main/kotlin/vb.shadow-conventions.gradle.kts

@@ -5,7 +5,7 @@ import org.gradle.kotlin.dsl.named
 plugins {
     id("vb.base-conventions")
     id("maven-publish")
-    id("com.github.johnrengelman.shadow")
+    id("com.gradleup.shadow")
 }
 
 tasks {

build.gradle.kts

@@ -6,7 +6,7 @@ plugins {
 allprojects {
     group = "com.viaversion"
     version = property("projectVersion") as String // from gradle.properties
-    description = "Allows older Minecraft client versions to connect to newer server versions."
+    description = "Allows the connection of older clients to newer server versions for Minecraft servers."
 }
 
 val main = setOf(
@@ -15,10 +15,10 @@ val main = setOf(
     projects.viabackwardsBukkit,
     projects.viabackwardsVelocity,
     projects.viabackwardsFabric
-).map { it.dependencyProject }
+).map { it.path }
 
 subprojects {
-    when (this) {
+    when (path) {
         in main -> plugins.apply("vb.shadow-conventions")
         else -> plugins.apply("vb.base-conventions")
     }

bukkit/src/main/java/com/viaversion/viabackwards/BukkitPlugin.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -48,7 +48,10 @@ public class BukkitPlugin extends JavaPlugin implements ViaBackwardsPlatform {
         }
     }
 
-    private void enable() {
+    @Override
+    public void enable() {
+        ViaBackwardsPlatform.super.enable();
+
         final ProtocolVersion protocolVersion = Via.getAPI().getServerVersion().highestSupportedProtocolVersion();
         if (protocolVersion.newerThanOrEqualTo(ProtocolVersion.v1_17)) {
             new PlayerItemDropListener(this).register();

bukkit/src/main/java/com/viaversion/viabackwards/listener/BlockBreakListener.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

bukkit/src/main/java/com/viaversion/viabackwards/listener/FireDamageListener.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

bukkit/src/main/java/com/viaversion/viabackwards/listener/FireExtinguishListener.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

bukkit/src/main/java/com/viaversion/viabackwards/listener/LecternInteractListener.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

bukkit/src/main/java/com/viaversion/viabackwards/listener/PlayerItemDropListener.java

@@ -1,7 +1,7 @@
 
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

bukkit/src/main/java/com/viaversion/viabackwards/provider/BukkitAdvancementCriteriaProvider.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

bukkit/src/main/resources/plugin.yml

@@ -6,6 +6,6 @@ api-version: 1.13
 folia-supported: true
 
 authors: [Matsv, kennytv, Gerrygames, creeper123123321, ForceUpdate1, EnZaXD]
-website: ${url}
+website: "https://viaversion.com/backwards"
 
 depend: [ViaVersion]

common/build.gradle.kts

@@ -24,3 +24,32 @@ dependencies {
 java {
     withJavadocJar()
 }
+
+// Task to quickly test/debug code changes using https://github.com/ViaVersion/ViaProxy
+// For further instructions see the ViaProxy repository README
+tasks.register<JavaExec>("runViaProxy") {
+    dependsOn(tasks.shadowJar)
+
+    val viaProxyConfiguration = configurations.create("viaProxy")
+    viaProxyConfiguration.dependencies.add(dependencies.create(rootProject.libs.viaProxy.get().copy().setTransitive(false)))
+
+    mainClass.set("net.raphimc.viaproxy.ViaProxy")
+    classpath = viaProxyConfiguration
+    workingDir = file("run")
+    jvmArgs = listOf("-DskipUpdateCheck")
+
+    if (System.getProperty("viaproxy.gui.autoStart") != null) {
+        jvmArgs("-Dviaproxy.gui.autoStart")
+    }
+
+    doFirst {
+        val jarsDir = file("$workingDir/jars")
+        jarsDir.mkdirs()
+        file("$jarsDir/${project.name}.jar").writeBytes(tasks.shadowJar.get().archiveFile.get().asFile.readBytes())
+    }
+
+    doLast {
+        file("$workingDir/jars/${project.name}.jar").delete()
+        file("$workingDir/logs").deleteRecursively()
+    }
+}

common/src/main/java/com/viaversion/viabackwards/ViaBackwards.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/ViaBackwardsConfig.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -36,6 +36,8 @@ public class ViaBackwardsConfig extends Config implements com.viaversion.viaback
     private boolean handlePingsAsInvAcknowledgements;
     private boolean bedrockAtY0;
     private boolean sculkShriekersToCryingObsidian;
+    private boolean mapDarknessEffect;
+    private boolean mapCustomModelData;
     private boolean suppressEmulationWarnings;
 
     public ViaBackwardsConfig(File configFile, Logger logger) {
@@ -57,6 +59,8 @@ public class ViaBackwardsConfig extends Config implements com.viaversion.viaback
         handlePingsAsInvAcknowledgements = getBoolean("handle-pings-as-inv-acknowledgements", false);
         bedrockAtY0 = getBoolean("bedrock-at-y-0", false);
         sculkShriekersToCryingObsidian = getBoolean("sculk-shriekers-to-crying-obsidian", false);
+        mapDarknessEffect = getBoolean("map-darkness-effect", true);
+        mapCustomModelData = getBoolean("map-custom-model-data", true);
         suppressEmulationWarnings = getBoolean("suppress-emulation-warnings", false);
     }
 
@@ -100,6 +104,16 @@ public class ViaBackwardsConfig extends Config implements com.viaversion.viaback
         return sculkShriekersToCryingObsidian;
     }
 
+    @Override
+    public boolean mapDarknessEffect() {
+        return mapDarknessEffect;
+    }
+
+    @Override
+    public boolean mapCustomModelData() {
+        return mapCustomModelData;
+    }
+
     @Override
     public boolean suppressEmulationWarnings() {
         return suppressEmulationWarnings;

common/src/main/java/com/viaversion/viabackwards/api/BackwardsProtocol.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -18,7 +18,7 @@
 package com.viaversion.viabackwards.api;
 
 import com.viaversion.viabackwards.api.data.BackwardsMappingData;
-import com.viaversion.viabackwards.api.rewriters.TranslatableRewriter;
+import com.viaversion.viabackwards.api.rewriters.text.TranslatableRewriter;
 import com.viaversion.viaversion.api.Via;
 import com.viaversion.viaversion.api.protocol.AbstractProtocol;
 import com.viaversion.viaversion.api.protocol.Protocol;
@@ -66,7 +66,7 @@ public abstract class BackwardsProtocol<CU extends ClientboundPacketType, CM ext
     }
 
     @Override
-    public @Nullable TranslatableRewriter<CU> getComponentRewriter() {
+    public @Nullable TranslatableRewriter getComponentRewriter() {
         return null;
     }
 }

common/src/main/java/com/viaversion/viabackwards/api/ViaBackwardsConfig.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -78,6 +78,20 @@ public interface ViaBackwardsConfig extends Config {
      */
     boolean sculkShriekerToCryingObsidian();
 
+    /**
+     * Maps the darkness effect to blindness for 1.18.2 clients on 1.19+ servers.
+     *
+     * @return true if enabled
+     */
+    boolean mapDarknessEffect();
+
+    /**
+     * If enabled, 1.21.3 clients will receive the first float of 1.21.4+ custom model data as int. Disable if you handle this change yourself.
+     *
+     * @return true if enabled
+     */
+    boolean mapCustomModelData();
+
     /**
      * Suppresses warnings of missing emulations for certain features that are not supported (e.g. world height in 1.17+).
      *

common/src/main/java/com/viaversion/viabackwards/api/ViaBackwardsPlatform.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -20,7 +20,7 @@ package com.viaversion.viabackwards.api;
 
 import com.viaversion.viabackwards.ViaBackwards;
 import com.viaversion.viabackwards.ViaBackwardsConfig;
-import com.viaversion.viabackwards.api.rewriters.TranslatableRewriter;
+import com.viaversion.viabackwards.api.data.TranslatableMappings;
 import com.viaversion.viabackwards.protocol.v1_11to1_10.Protocol1_11To1_10;
 import com.viaversion.viabackwards.protocol.v1_12to1_11_1.Protocol1_12To1_11_1;
 import com.viaversion.viabackwards.protocol.v1_11_1to1_11.Protocol1_11_1To1_11;
@@ -49,11 +49,15 @@ import com.viaversion.viabackwards.protocol.v1_19to1_18_2.Protocol1_19To1_18_2;
 import com.viaversion.viabackwards.protocol.v1_18_2to1_18.Protocol1_18_2To1_18;
 import com.viaversion.viabackwards.protocol.v1_19_3to1_19_1.Protocol1_19_3To1_19_1;
 import com.viaversion.viabackwards.protocol.v1_19_4to1_19_3.Protocol1_19_4To1_19_3;
+import com.viaversion.viabackwards.protocol.v1_21_4to1_21_2.Protocol1_21_4To1_21_2;
 import com.viaversion.viabackwards.protocol.v1_20to1_19_4.Protocol1_20To1_19_4;
 import com.viaversion.viabackwards.protocol.v1_19_1to1_19.Protocol1_19_1To1_19;
 import com.viaversion.viabackwards.protocol.v1_20_3to1_20_2.Protocol1_20_3To1_20_2;
 import com.viaversion.viabackwards.protocol.v1_20_5to1_20_3.Protocol1_20_5To1_20_3;
 import com.viaversion.viabackwards.protocol.v1_20_2to1_20.Protocol1_20_2To1_20;
+import com.viaversion.viabackwards.protocol.v1_21_2to1_21.Protocol1_21_2To1_21;
+import com.viaversion.viabackwards.protocol.v1_21_2to1_21.task.PlayerPacketsTickTask;
+import com.viaversion.viabackwards.protocol.v1_21_5to1_21_4.Protocol1_21_5To1_21_4;
 import com.viaversion.viabackwards.protocol.v1_21to1_20_5.Protocol1_21To1_20_5;
 import com.viaversion.viabackwards.protocol.v1_9_3to1_9_1.Protocol1_9_3To1_9_1;
 import com.viaversion.viabackwards.protocol.v1_10to1_9_3.Protocol1_10To1_9_3;
@@ -69,7 +73,7 @@ import java.util.logging.Logger;
 
 public interface ViaBackwardsPlatform {
 
-    String MINIMUM_VV_VERSION = "5.0.2";
+    String MINIMUM_VV_VERSION = "5.3.2";
 
     /**
      * Initialize ViaBackwards.
@@ -89,7 +93,7 @@ public interface ViaBackwardsPlatform {
         Via.getManager().getSubPlatforms().add(VersionInfo.getImplementationVersion());
 
         getLogger().info("Loading translations...");
-        TranslatableRewriter.loadTranslatables();
+        TranslatableMappings.loadTranslatables();
 
         getLogger().info("Registering protocols...");
         final ProtocolManager protocolManager = Via.getManager().getProtocolManager();
@@ -141,6 +145,16 @@ public interface ViaBackwardsPlatform {
         protocolManager.registerProtocol(new Protocol1_20_5To1_20_3(), ProtocolVersion.v1_20_3, ProtocolVersion.v1_20_5);
 
         protocolManager.registerProtocol(new Protocol1_21To1_20_5(), ProtocolVersion.v1_20_5, ProtocolVersion.v1_21);
+        protocolManager.registerProtocol(new Protocol1_21_2To1_21(), ProtocolVersion.v1_21, ProtocolVersion.v1_21_2);
+        protocolManager.registerProtocol(new Protocol1_21_4To1_21_2(), ProtocolVersion.v1_21_2, ProtocolVersion.v1_21_4);
+        protocolManager.registerProtocol(new Protocol1_21_5To1_21_4(), ProtocolVersion.v1_21_4, ProtocolVersion.v1_21_5);
+    }
+
+    default void enable() {
+        final ProtocolVersion protocolVersion = Via.getAPI().getServerVersion().highestSupportedProtocolVersion();
+        if (protocolVersion.newerThanOrEqualTo(ProtocolVersion.v1_21_2)) {
+            Via.getPlatform().runRepeatingSync(new PlayerPacketsTickTask(), 1L);
+        }
     }
 
     /**

common/src/main/java/com/viaversion/viabackwards/api/data/BackwardsMappingData.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/api/data/BackwardsMappingDataLoader.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/api/data/ItemMappings.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/api/data/MappedItem.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/api/data/MappedLegacyBlockItem.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/api/data/TranslatableMappings.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -15,25 +15,19 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-package com.viaversion.viabackwards.api.rewriters;
+package com.viaversion.viabackwards.api.data;
 
-import com.viaversion.nbt.tag.CompoundTag;
-import com.viaversion.nbt.tag.StringTag;
-import com.viaversion.viabackwards.api.BackwardsProtocol;
-import com.viaversion.viabackwards.api.data.BackwardsMappingDataLoader;
-import com.viaversion.viaversion.api.connection.UserConnection;
-import com.viaversion.viaversion.api.protocol.packet.ClientboundPacketType;
+import com.viaversion.viabackwards.ViaBackwards;
+import com.viaversion.viaversion.api.protocol.Protocol;
 import com.viaversion.viaversion.libs.gson.JsonElement;
 import com.viaversion.viaversion.libs.gson.JsonObject;
-import com.viaversion.viaversion.rewriter.ComponentRewriter;
 import java.util.HashMap;
 import java.util.Map;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
-public class TranslatableRewriter<C extends ClientboundPacketType> extends ComponentRewriter<C> {
+public final class TranslatableMappings {
 
     private static final Map<String, Map<String, String>> TRANSLATABLES = new HashMap<>();
-    private final Map<String, String> translatables;
 
     public static void loadTranslatables() {
         if (!TRANSLATABLES.isEmpty()) {
@@ -52,42 +46,24 @@ public class TranslatableRewriter<C extends ClientboundPacketType> extends Compo
         }
     }
 
-    public TranslatableRewriter(final BackwardsProtocol<C, ?, ?, ?> protocol, final ReadType type) {
-        this(protocol, type, protocol.getClass().getSimpleName().replace("Protocol", "").split("To")[0].replace("_", "."));
+    public static Map<String, String> translatablesFor(final Protocol<?, ?, ?, ?> protocol) {
+        final String version = protocol.getClass().getSimpleName()
+            .replace("Protocol", "")
+            .split("To")[0]
+            .replace("_", ".");
+        return translatablesFor(version);
     }
 
-    public TranslatableRewriter(final BackwardsProtocol<C, ?, ?, ?> protocol, final ReadType type, final String version) {
-        super(protocol, type);
+    public static Map<String, String> translatablesFor(final String version) {
         final Map<String, String> translatableMappings = getTranslatableMappings(version);
         if (translatableMappings == null) {
-            protocol.getLogger().warning("Missing " + version + " translatables!");
-            this.translatables = new HashMap<>();
-        } else {
-            this.translatables = translatableMappings;
+            ViaBackwards.getPlatform().getLogger().warning("Missing " + version + " translatables!");
+            return new HashMap<>();
         }
+        return translatableMappings;
     }
 
-    @Override
-    protected void handleTranslate(final JsonObject root, final String translate) {
-        final String newTranslate = mappedTranslationKey(translate);
-        if (newTranslate != null) {
-            root.addProperty("translate", newTranslate);
-        }
-    }
-
-    @Override
-    protected void handleTranslate(final UserConnection connection, final CompoundTag parentTag, final StringTag translateTag) {
-        final String newTranslate = mappedTranslationKey(translateTag.getValue());
-        if (newTranslate != null) {
-            parentTag.put("translate", new StringTag(newTranslate));
-        }
-    }
-
-    public @Nullable String mappedTranslationKey(final String translationKey) {
-        return translatables.get(translationKey);
-    }
-
-    public static Map<String, String> getTranslatableMappings(final String sectionIdentifier) {
+    public static @Nullable Map<String, String> getTranslatableMappings(final String sectionIdentifier) {
         return TRANSLATABLES.get(sectionIdentifier);
     }
 }

common/src/main/java/com/viaversion/viabackwards/api/entities/storage/EntityObjectData.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/api/entities/storage/EntityPositionHandler.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -75,7 +75,11 @@ public class EntityPositionHandler {
             }
         }
 
-        positionStorage.setCoordinates(x, y, z, relative);
+        if (relative) {
+            positionStorage.addRelativePosition(x, y, z);
+        } else {
+            positionStorage.setPosition(x, y, z);
+        }
     }
 
     public EntityPositionStorage getStorage(UserConnection user, int entityId) {

common/src/main/java/com/viaversion/viabackwards/api/entities/storage/EntityPositionStorage.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -34,15 +34,15 @@ public abstract class EntityPositionStorage {
         return z;
     }
 
-    public void setCoordinates(double x, double y, double z, boolean relative) {
-        if (relative) {
-            this.x += x;
-            this.y += y;
-            this.z += z;
-        } else {
-            this.x = x;
-            this.y = y;
-            this.z = z;
-        }
+    public void setPosition(double x, double y, double z) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+    }
+
+    public void addRelativePosition(double relX, double relY, double relZ) {
+        this.x += relX;
+        this.y += relY;
+        this.z += relZ;
     }
 }

common/src/main/java/com/viaversion/viabackwards/api/entities/storage/EntityReplacement.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/api/entities/storage/PlayerPositionStorage.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -18,8 +18,6 @@
 package com.viaversion.viabackwards.api.entities.storage;
 
 import com.viaversion.viaversion.api.connection.StorableObject;
-import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
-import com.viaversion.viaversion.api.type.Types;
 
 public abstract class PlayerPositionStorage implements StorableObject {
     private double x;
@@ -53,19 +51,15 @@ public abstract class PlayerPositionStorage implements StorableObject {
         this.z = z;
     }
 
-    public void setCoordinates(PacketWrapper wrapper, boolean relative) {
-        setCoordinates(wrapper.get(Types.DOUBLE, 0), wrapper.get(Types.DOUBLE, 1), wrapper.get(Types.DOUBLE, 2), relative);
+    public void setPosition(double x, double y, double z) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
     }
 
-    public void setCoordinates(double x, double y, double z, boolean relative) {
-        if (relative) {
-            this.x += x;
-            this.y += y;
-            this.z += z;
-        } else {
-            this.x = x;
-            this.y = y;
-            this.z = z;
-        }
+    public void addRelativePosition(double relX, double relY, double relZ) {
+        this.x += relX;
+        this.y += relY;
+        this.z += relZ;
     }
 }

common/src/main/java/com/viaversion/viabackwards/api/entities/storage/WrappedEntityData.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/api/rewriters/BackwardsItemRewriter.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/api/rewriters/BackwardsItemRewriterBase.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/api/rewriters/BackwardsStructuredItemRewriter.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -18,39 +18,55 @@
 package com.viaversion.viabackwards.api.rewriters;
 
 import com.viaversion.nbt.tag.CompoundTag;
+import com.viaversion.nbt.tag.FloatTag;
+import com.viaversion.nbt.tag.IntArrayTag;
 import com.viaversion.nbt.tag.IntTag;
 import com.viaversion.nbt.tag.ListTag;
-import com.viaversion.nbt.tag.NumberTag;
+import com.viaversion.nbt.tag.StringTag;
 import com.viaversion.nbt.tag.Tag;
 import com.viaversion.viabackwards.api.BackwardsProtocol;
 import com.viaversion.viabackwards.api.data.BackwardsMappingData;
 import com.viaversion.viabackwards.api.data.MappedItem;
 import com.viaversion.viaversion.api.connection.UserConnection;
-import com.viaversion.viaversion.api.data.FullMappings;
-import com.viaversion.viaversion.api.minecraft.data.StructuredData;
+import com.viaversion.viaversion.api.minecraft.EitherHolder;
+import com.viaversion.viaversion.api.minecraft.Holder;
+import com.viaversion.viaversion.api.minecraft.HolderSet;
 import com.viaversion.viaversion.api.minecraft.data.StructuredDataContainer;
 import com.viaversion.viaversion.api.minecraft.data.StructuredDataKey;
 import com.viaversion.viaversion.api.minecraft.item.Item;
+import com.viaversion.viaversion.api.minecraft.item.data.CustomModelData1_21_4;
 import com.viaversion.viaversion.api.protocol.packet.ClientboundPacketType;
 import com.viaversion.viaversion.api.protocol.packet.ServerboundPacketType;
+import com.viaversion.viaversion.api.protocol.version.ProtocolVersion;
 import com.viaversion.viaversion.api.type.Type;
-import com.viaversion.viaversion.libs.fastutil.ints.Int2IntFunction;
 import com.viaversion.viaversion.rewriter.StructuredItemRewriter;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.function.BiConsumer;
+import java.util.function.Function;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
 public class BackwardsStructuredItemRewriter<C extends ClientboundPacketType, S extends ServerboundPacketType,
     T extends BackwardsProtocol<C, ?, ?, S>> extends StructuredItemRewriter<C, S, T> {
 
-    public BackwardsStructuredItemRewriter(final T protocol, final Type<Item> itemType, final Type<Item[]> itemArrayType) {
-        super(protocol, itemType, itemArrayType);
+    private static final int[] EMPTY_INT_ARRAY = new int[0];
+
+    public BackwardsStructuredItemRewriter(
+        T protocol,
+        Type<Item> itemType, Type<Item[]> itemArrayType, Type<Item> mappedItemType, Type<Item[]> mappedItemArrayType,
+        Type<Item> itemCostType, Type<Item> optionalItemCostType, Type<Item> mappedItemCostType, Type<Item> mappedOptionalItemCostType
+    ) {
+        super(protocol, itemType, itemArrayType, mappedItemType, mappedItemArrayType, itemCostType, optionalItemCostType, mappedItemCostType, mappedOptionalItemCostType);
     }
 
     public BackwardsStructuredItemRewriter(final T protocol, final Type<Item> itemType, final Type<Item[]> itemArrayType, final Type<Item> mappedItemType, final Type<Item[]> mappedItemArrayType) {
         super(protocol, itemType, itemArrayType, mappedItemType, mappedItemArrayType);
     }
 
+    public BackwardsStructuredItemRewriter(final T protocol, final Type<Item> itemType, final Type<Item[]> itemArrayType) {
+        super(protocol, itemType, itemArrayType);
+    }
+
     @Override
     public Item handleItemToClient(final UserConnection connection, final Item item) {
         if (item.isEmpty()) {
@@ -58,33 +74,9 @@ public class BackwardsStructuredItemRewriter<C extends ClientboundPacketType, S
         }
 
         final StructuredDataContainer dataContainer = item.dataContainer();
+        updateItemDataComponentTypeIds(dataContainer, true);
+
         final BackwardsMappingData mappingData = protocol.getMappingData();
-        if (mappingData != null && mappingData.getDataComponentSerializerMappings() != null) {
-            final FullMappings mappings = mappingData.getDataComponentSerializerMappings();
-            dataContainer.setIdLookup(protocol, true);
-            dataContainer.updateIds(protocol, mappings::getNewId);
-        }
-
-        if (protocol.getComponentRewriter() != null) {
-            // Handle name and lore components
-            updateComponent(connection, item, StructuredDataKey.ITEM_NAME, "item_name");
-            updateComponent(connection, item, StructuredDataKey.CUSTOM_NAME, "custom_name");
-
-            final StructuredData<Tag[]> loreData = dataContainer.getNonEmpty(StructuredDataKey.LORE);
-            if (loreData != null) {
-                for (final Tag tag : loreData.value()) {
-                    protocol.getComponentRewriter().processTag(connection, tag);
-                }
-            }
-        }
-
-        Int2IntFunction itemIdRewriter = null;
-        Int2IntFunction blockIdRewriter = null;
-        if (mappingData != null) {
-            itemIdRewriter = mappingData.getItemMappings() != null ? mappingData::getNewItemId : null;
-            blockIdRewriter = mappingData.getBlockMappings() != null ? mappingData::getNewBlockId : null;
-        }
-
         final MappedItem mappedItem = mappingData != null ? mappingData.getMappedItem(item.identifier()) : null;
         if (mappedItem == null) {
             // Just rewrite the id
@@ -92,7 +84,7 @@ public class BackwardsStructuredItemRewriter<C extends ClientboundPacketType, S
                 item.setIdentifier(mappingData.getNewItemId(item.identifier()));
             }
 
-            updateItemComponents(connection, dataContainer, this::handleItemToClient, itemIdRewriter, blockIdRewriter);
+            updateItemDataComponents(connection, item, true);
             return item;
         }
 
@@ -102,17 +94,28 @@ public class BackwardsStructuredItemRewriter<C extends ClientboundPacketType, S
         item.setIdentifier(mappedItem.id());
 
         // Add custom model data
-        if (mappedItem.customModelData() != null && !dataContainer.contains(StructuredDataKey.CUSTOM_MODEL_DATA)) {
-            dataContainer.set(StructuredDataKey.CUSTOM_MODEL_DATA, mappedItem.customModelData());
+        if (mappedItem.customModelData() != null) {
+            if (connection.getProtocolInfo().protocolVersion().newerThanOrEqualTo(ProtocolVersion.v1_21_4)) {
+                if (!dataContainer.has(StructuredDataKey.CUSTOM_MODEL_DATA1_21_4)) {
+                    dataContainer.set(StructuredDataKey.CUSTOM_MODEL_DATA1_21_4, new CustomModelData1_21_4(
+                        new float[]{mappedItem.customModelData().floatValue()},
+                        new boolean[0],
+                        new String[0],
+                        EMPTY_INT_ARRAY
+                    ));
+                }
+            } else if (!dataContainer.has(StructuredDataKey.CUSTOM_MODEL_DATA1_20_5)) {
+                dataContainer.set(StructuredDataKey.CUSTOM_MODEL_DATA1_20_5, mappedItem.customModelData());
+            }
         }
 
         // Set custom name - only done if there is no original one
-        if (!dataContainer.contains(StructuredDataKey.CUSTOM_NAME)) {
+        if (!dataContainer.has(StructuredDataKey.CUSTOM_NAME)) {
             dataContainer.set(StructuredDataKey.CUSTOM_NAME, mappedItem.tagName());
             tag.putBoolean(nbtTagName("added_custom_name"), true);
         }
 
-        updateItemComponents(connection, dataContainer, this::handleItemToClient, itemIdRewriter, blockIdRewriter);
+        updateItemDataComponents(connection, item, true);
         return item;
     }
 
@@ -122,46 +125,27 @@ public class BackwardsStructuredItemRewriter<C extends ClientboundPacketType, S
             return item;
         }
 
-        final BackwardsMappingData mappingData = protocol.getMappingData();
         final StructuredDataContainer dataContainer = item.dataContainer();
-        if (mappingData != null) {
-            if (mappingData.getItemMappings() != null) {
-                item.setIdentifier(mappingData.getOldItemId(item.identifier()));
-            }
+        updateItemDataComponentTypeIds(dataContainer, false);
 
-            final FullMappings dataComponentMappings = mappingData.getDataComponentSerializerMappings();
-            if (dataComponentMappings != null) {
-                dataContainer.setIdLookup(protocol, false);
-                dataContainer.updateIds(protocol, id -> dataComponentMappings.inverse().getNewId(id));
-            }
+        final BackwardsMappingData mappingData = protocol.getMappingData();
+        if (mappingData != null && mappingData.getItemMappings() != null) {
+            item.setIdentifier(mappingData.getOldItemId(item.identifier()));
         }
 
-
-        final CompoundTag tag = customTag(item);
-        if (tag != null) {
-            final Tag originalId = tag.remove(nbtTagName("id"));
-            if (originalId instanceof IntTag) {
-                item.setIdentifier(((NumberTag) originalId).asInt());
+        final CompoundTag customData = dataContainer.get(StructuredDataKey.CUSTOM_DATA);
+        if (customData != null) {
+            if (customData.remove(nbtTagName("id")) instanceof final IntTag originalTag) {
+                item.setIdentifier(originalTag.asInt());
+                removeCustomTag(dataContainer, customData);
             }
         }
 
         restoreTextComponents(item);
-
-        Int2IntFunction itemIdRewriter = null;
-        Int2IntFunction blockIdRewriter = null;
-        if (mappingData != null) {
-            itemIdRewriter = mappingData.getItemMappings() != null ? mappingData::getOldItemId : null;
-            blockIdRewriter = mappingData.getBlockMappings() != null ? mappingData::getOldBlockId : null;
-        }
-        updateItemComponents(connection, dataContainer, this::handleItemToServer, itemIdRewriter, blockIdRewriter);
+        updateItemDataComponents(connection, item, false);
         return item;
     }
 
-    protected @Nullable CompoundTag customTag(final Item item) {
-        final StructuredData<CompoundTag> customData = item.dataContainer().getNonEmpty(StructuredDataKey.CUSTOM_DATA);
-        return customData != null ? customData.value() : null;
-    }
-
     protected void saveListTag(CompoundTag tag, ListTag<?> original, String name) {
         // Multiple places might try to backup data
         String backupName = nbtTagName(name);
@@ -204,6 +188,137 @@ public class BackwardsStructuredItemRewriter<C extends ClientboundPacketType, S
         return new ArrayList<>(data.values());
     }
 
+    protected Tag holderSetToTag(final HolderSet set) {
+        if (set.hasIds()) {
+            return new IntArrayTag(set.ids());
+        } else {
+            return new StringTag(set.tagKey());
+        }
+    }
+
+    protected HolderSet restoreHolderSet(final CompoundTag tag, final String key) {
+        final Tag savedTag = tag.get(key);
+        if (savedTag == null) {
+            return HolderSet.of(EMPTY_INT_ARRAY);
+        }
+
+        if (savedTag instanceof StringTag tagKey) {
+            return HolderSet.of(tagKey.getValue());
+        } else if (savedTag instanceof IntArrayTag idsTag) {
+            return HolderSet.of(idsTag.getValue());
+        } else {
+            return HolderSet.of(EMPTY_INT_ARRAY);
+        }
+    }
+
+    protected <V> Tag holderToTag(final Holder<V> holder, final BiConsumer<V, CompoundTag> valueSaveFunction) {
+        if (holder.hasId()) {
+            return new IntTag(holder.id());
+        } else {
+            final CompoundTag savedTag = new CompoundTag();
+            valueSaveFunction.accept(holder.value(), savedTag);
+            return savedTag;
+        }
+    }
+
+    protected <V> Tag eitherHolderToTag(final EitherHolder<V> holder, final BiConsumer<V, CompoundTag> valueSaveFunction) {
+        if (holder.hasKey()) {
+            return new StringTag(holder.key());
+        } else {
+            return holderToTag(holder.holder(), valueSaveFunction);
+        }
+    }
+
+    protected <V> void saveEitherHolderData(final StructuredDataKey<EitherHolder<V>> key, final StructuredDataContainer data, final CompoundTag backupTag, final BiConsumer<V, CompoundTag> valueSaveFunction) {
+        final EitherHolder<V> holder = data.get(key);
+        if (holder != null) {
+            backupTag.put(key.identifier(), eitherHolderToTag(holder, valueSaveFunction));
+        }
+    }
+
+    protected <V> void saveHolderData(final StructuredDataKey<Holder<V>> key, final StructuredDataContainer data, final CompoundTag backupTag, final BiConsumer<V, CompoundTag> valueSaveFunction) {
+        final Holder<V> holder = data.get(key);
+        if (holder != null) {
+            backupTag.put(key.identifier(), holderToTag(holder, valueSaveFunction));
+        }
+    }
+
+    protected <V> Holder<V> restoreHolder(final CompoundTag tag, final String key, final Function<CompoundTag, V> valueRestoreFunction) {
+        final Tag savedTag = tag.get(key);
+        if (savedTag == null) {
+            return Holder.of(0);
+        }
+
+        if (savedTag instanceof IntTag idTag) {
+            return Holder.of(idTag.asInt());
+        } else if (savedTag instanceof CompoundTag compoundTag) {
+            return Holder.of(valueRestoreFunction.apply(compoundTag));
+        } else {
+            return Holder.of(0);
+        }
+    }
+
+    protected <V> EitherHolder<V> restoreEitherHolder(final CompoundTag tag, final String key, final Function<CompoundTag, V> valueRestoreFunction) {
+        final Tag savedTag = tag.get(key);
+        if (savedTag == null) {
+            return EitherHolder.of(Holder.of(0));
+        }
+
+        if (savedTag instanceof StringTag keyTag) {
+            return EitherHolder.of(keyTag.getValue());
+        } else {
+            return EitherHolder.of(restoreHolder(tag, key, valueRestoreFunction));
+        }
+    }
+
+    protected <V> void restoreHolderData(final StructuredDataKey<Holder<V>> key, final StructuredDataContainer data, final CompoundTag backupTag, final Function<CompoundTag, V> valueRestoreFunction) {
+        if (backupTag.contains(key.identifier())) {
+            data.set(key, restoreHolder(backupTag, key.identifier(), valueRestoreFunction));
+        }
+    }
+
+    protected void saveStringData(final StructuredDataKey<String> key, final StructuredDataContainer data, final CompoundTag backupTag) {
+        final String value = data.get(key);
+        if (value != null) {
+            backupTag.putString(key.identifier(), value);
+        }
+    }
+
+    protected void restoreStringData(final StructuredDataKey<String> key, final StructuredDataContainer data, final CompoundTag backupTag) {
+        final String value = backupTag.getString(key.identifier());
+        if (value != null) {
+            data.set(key, value);
+        }
+    }
+
+    protected void saveIntData(final StructuredDataKey<Integer> key, final StructuredDataContainer data, final CompoundTag backupTag) {
+        final Integer variant = data.get(key);
+        if (variant != null) {
+            backupTag.putInt(key.identifier(), variant);
+        }
+    }
+
+    protected void restoreIntData(final StructuredDataKey<Integer> key, final StructuredDataContainer data, final CompoundTag backupTag) {
+        final IntTag variant = backupTag.getIntTag(key.identifier());
+        if (variant != null) {
+            data.set(key, variant.asInt());
+        }
+    }
+
+    protected void saveFloatData(final StructuredDataKey<Float> key, final StructuredDataContainer data, final CompoundTag backupTag) {
+        final Float variant = data.get(key);
+        if (variant != null) {
+            backupTag.putFloat(key.identifier(), variant);
+        }
+    }
+
+    protected void restoreFloatData(final StructuredDataKey<Float> key, final StructuredDataContainer data, final CompoundTag backupTag) {
+        final FloatTag variant = backupTag.getFloatTag(key.identifier());
+        if (variant != null) {
+            data.set(key, variant.asFloat());
+        }
+    }
+
     @Override
     public String nbtTagName() {
         return "VB|" + protocol.getClass().getSimpleName();

common/src/main/java/com/viaversion/viabackwards/api/rewriters/EnchantmentRewriter.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/api/rewriters/EntityRewriter.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -24,8 +24,6 @@ import com.viaversion.viaversion.api.minecraft.entitydata.EntityDataType;
 import com.viaversion.viaversion.api.protocol.packet.ClientboundPacketType;
 import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
 import com.viaversion.viaversion.api.protocol.remapper.PacketHandler;
-import com.viaversion.viaversion.api.protocol.remapper.PacketHandlers;
-import com.viaversion.viaversion.api.type.Type;
 import com.viaversion.viaversion.api.type.Types;
 import com.viaversion.viaversion.api.type.types.version.Types1_14;
 
@@ -41,40 +39,34 @@ public abstract class EntityRewriter<C extends ClientboundPacketType, T extends
 
     @Override
     public void registerTrackerWithData(C packetType, EntityType fallingBlockType) {
-        protocol.registerClientbound(packetType, new PacketHandlers() {
-            @Override
-            public void register() {
-                map(Types.VAR_INT); // 0 - Entity id
-                map(Types.UUID); // 1 - Entity UUID
-                map(Types.VAR_INT); // 2 - Entity Type
-                map(Types.DOUBLE); // 3 - X
-                map(Types.DOUBLE); // 4 - Y
-                map(Types.DOUBLE); // 5 - Z
-                map(Types.BYTE); // 6 - Pitch
-                map(Types.BYTE); // 7 - Yaw
-                map(Types.INT); // 8 - Data
-                handler(getSpawnTrackerWithDataHandler(fallingBlockType));
-            }
+        protocol.registerClientbound(packetType, wrapper -> {
+            wrapper.passthrough(Types.VAR_INT); // Entity ID
+            wrapper.passthrough(Types.UUID); // Entity UUID
+            wrapper.passthrough(Types.VAR_INT); // Entity Type
+            wrapper.passthrough(Types.DOUBLE); // X
+            wrapper.passthrough(Types.DOUBLE); // Y
+            wrapper.passthrough(Types.DOUBLE); // Z
+            wrapper.passthrough(Types.BYTE); // Pitch
+            wrapper.passthrough(Types.BYTE); // Yaw
+            wrapper.passthrough(Types.INT); // Data
+            getSpawnTrackerWithDataHandler(fallingBlockType).handle(wrapper);
         });
     }
 
     @Override
     public void registerTrackerWithData1_19(C packetType, EntityType fallingBlockType) {
-        protocol.registerClientbound(packetType, new PacketHandlers() {
-            @Override
-            public void register() {
-                map(Types.VAR_INT); // Entity id
-                map(Types.UUID); // Entity UUID
-                map(Types.VAR_INT); // Entity type
-                map(Types.DOUBLE); // X
-                map(Types.DOUBLE); // Y
-                map(Types.DOUBLE); // Z
-                map(Types.BYTE); // Pitch
-                map(Types.BYTE); // Yaw
-                map(Types.BYTE); // Head yaw
-                map(Types.VAR_INT); // Data
-                handler(getSpawnTrackerWithDataHandler1_19(fallingBlockType));
-            }
+        protocol.registerClientbound(packetType, wrapper -> {
+            wrapper.passthrough(Types.VAR_INT); // Entity id
+            wrapper.passthrough(Types.UUID); // Entity UUID
+            wrapper.passthrough(Types.VAR_INT); // Entity type
+            wrapper.passthrough(Types.DOUBLE); // X
+            wrapper.passthrough(Types.DOUBLE); // Y
+            wrapper.passthrough(Types.DOUBLE); // Z
+            wrapper.passthrough(Types.BYTE); // Pitch
+            wrapper.passthrough(Types.BYTE); // Yaw
+            wrapper.passthrough(Types.BYTE); // Head yaw
+            wrapper.passthrough(Types.VAR_INT); // Data
+            getSpawnTrackerWithDataHandler1_19(fallingBlockType).handle(wrapper);
         });
     }
 
@@ -105,14 +97,11 @@ public abstract class EntityRewriter<C extends ClientboundPacketType, T extends
     }
 
     public void registerSpawnTracker(C packetType) {
-        protocol.registerClientbound(packetType, new PacketHandlers() {
-            @Override
-            public void register() {
-                map(Types.VAR_INT); // 0 - Entity ID
-                map(Types.UUID); // 1 - Entity UUID
-                map(Types.VAR_INT); // 2 - Entity Type
-                handler(wrapper -> trackAndMapEntity(wrapper));
-            }
+        protocol.registerClientbound(packetType, wrapper -> {
+            wrapper.passthrough(Types.VAR_INT); // Entity ID
+            wrapper.passthrough(Types.UUID); // Entity UUID
+            wrapper.passthrough(Types.VAR_INT); // Entity Type
+            trackAndMapEntity(wrapper);
         });
     }
 
@@ -127,7 +116,6 @@ public abstract class EntityRewriter<C extends ClientboundPacketType, T extends
             String world = wrapper.get(Types.STRING, 1);
             if (tracker.currentWorld() != null && !tracker.currentWorld().equals(world)) {
                 tracker.clearEntities();
-                tracker.trackClientEntity();
             }
             tracker.setCurrentWorld(world);
         };
@@ -142,6 +130,10 @@ public abstract class EntityRewriter<C extends ClientboundPacketType, T extends
     protected EntityType trackAndMapEntity(PacketWrapper wrapper) {
         int typeId = wrapper.get(Types.VAR_INT, 1);
         EntityType entityType = typeFromId(typeId);
+        if (entityType == null) {
+            return null;
+        }
+
         tracker(wrapper.user()).addEntity(wrapper.get(Types.VAR_INT, 0), entityType);
 
         int mappedTypeId = newEntityId(entityType.getId());

common/src/main/java/com/viaversion/viabackwards/api/rewriters/EntityRewriterBase.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -23,6 +23,7 @@ import com.viaversion.viabackwards.api.BackwardsProtocol;
 import com.viaversion.viabackwards.api.entities.storage.EntityReplacement;
 import com.viaversion.viabackwards.api.entities.storage.WrappedEntityData;
 import com.viaversion.viaversion.api.connection.UserConnection;
+import com.viaversion.viaversion.api.data.entity.EntityTracker;
 import com.viaversion.viaversion.api.data.entity.StoredEntityData;
 import com.viaversion.viaversion.api.data.entity.TrackedEntity;
 import com.viaversion.viaversion.api.minecraft.ClientWorld;
@@ -184,7 +185,7 @@ public abstract class EntityRewriterBase<C extends ClientboundPacketType, T exte
                     data.setValue(protocol.getMappingData().getNewBlockStateId(value));
                 }
             } else if (type == particleType) {
-                rewriteParticle(event.user(), data.value());
+                protocol.getParticleRewriter().rewriteParticle(event.user(), data.value());
             } else if (type == optionalComponentType || type == componentType) {
                 JsonElement text = data.value();
                 protocol.getComponentRewriter().processText(event.user(), text);
@@ -214,11 +215,11 @@ public abstract class EntityRewriterBase<C extends ClientboundPacketType, T exte
                     data.setValue(protocol.getMappingData().getNewBlockStateId(value));
                 }
             } else if (type == particleType) {
-                rewriteParticle(event.user(), data.value());
+                protocol.getParticleRewriter().rewriteParticle(event.user(), data.value());
             } else if (type == particlesType) {
                 Particle[] particles = data.value();
                 for (final Particle particle : particles) {
-                    rewriteParticle(event.user(), particle);
+                    protocol.getParticleRewriter().rewriteParticle(event.user(), particle);
                 }
             } else if (type == optionalComponentType || type == componentType) {
                 protocol.getComponentRewriter().processTag(event.user(), data.value());
@@ -230,7 +231,10 @@ public abstract class EntityRewriterBase<C extends ClientboundPacketType, T exte
     protected PacketHandler getTrackerHandler(Type<? extends Number> intType, int typeIndex) {
         return wrapper -> {
             Number id = wrapper.get(intType, typeIndex);
-            tracker(wrapper.user()).addEntity(wrapper.get(Types.VAR_INT, 0), typeFromId(id.intValue()));
+            EntityType entityType = typeFromId(id.intValue());
+            if (entityType != null) {
+                tracker(wrapper.user()).addEntity(wrapper.get(Types.VAR_INT, 0), entityType);
+            }
         };
     }
 
@@ -238,15 +242,27 @@ public abstract class EntityRewriterBase<C extends ClientboundPacketType, T exte
         return getTrackerHandler(Types.VAR_INT, 1);
     }
 
-    protected PacketHandler getTrackerHandler(EntityType entityType, Type<? extends Number> intType) {
-        return wrapper -> tracker(wrapper.user()).addEntity((int) wrapper.get(intType, 0), entityType);
+    protected PacketHandler getTrackerHandler(EntityType entityType) {
+        return wrapper -> tracker(wrapper.user()).addEntity(wrapper.get(Types.VAR_INT, 0), entityType);
+    }
+
+    protected PacketHandler getPlayerTrackerHandler() {
+        return wrapper -> {
+            final int entityId = wrapper.get(Types.INT, 0);
+
+            final EntityTracker tracker = tracker(wrapper.user());
+            tracker(wrapper.user()).setClientEntityId(entityId);
+            tracker.addEntity(entityId, tracker.playerType());
+        };
     }
 
     protected PacketHandler getDimensionHandler(int index) {
         return wrapper -> {
-            ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
+            ClientWorld clientWorld = wrapper.user().getClientWorld(this.protocol.getClass());
             int dimensionId = wrapper.get(Types.INT, index);
-            clientWorld.setEnvironment(dimensionId);
+            if (clientWorld.setEnvironment(dimensionId)) {
+                tracker(wrapper.user()).clearEntities();
+            }
         };
     }
 }

common/src/main/java/com/viaversion/viabackwards/api/rewriters/LegacyBlockItemRewriter.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -18,9 +18,16 @@
 
 package com.viaversion.viabackwards.api.rewriters;
 
+import com.viaversion.nbt.tag.ByteTag;
+import com.viaversion.nbt.tag.CompoundTag;
+import com.viaversion.nbt.tag.IntTag;
+import com.viaversion.nbt.tag.NumberTag;
+import com.viaversion.nbt.tag.ShortTag;
+import com.viaversion.nbt.tag.StringTag;
+import com.viaversion.nbt.tag.Tag;
 import com.viaversion.viabackwards.api.BackwardsProtocol;
-import com.viaversion.viabackwards.api.data.MappedLegacyBlockItem;
 import com.viaversion.viabackwards.api.data.BackwardsMappingDataLoader;
+import com.viaversion.viabackwards.api.data.MappedLegacyBlockItem;
 import com.viaversion.viabackwards.protocol.v1_12to1_11_1.data.BlockColors1_11_1;
 import com.viaversion.viaversion.api.connection.UserConnection;
 import com.viaversion.viaversion.api.minecraft.BlockChangeRecord;
@@ -41,17 +48,10 @@ import com.viaversion.viaversion.libs.fastutil.ints.Int2ObjectOpenHashMap;
 import com.viaversion.viaversion.libs.gson.JsonElement;
 import com.viaversion.viaversion.libs.gson.JsonObject;
 import com.viaversion.viaversion.libs.gson.JsonPrimitive;
-import com.viaversion.nbt.tag.ByteTag;
-import com.viaversion.nbt.tag.CompoundTag;
-import com.viaversion.nbt.tag.IntTag;
-import com.viaversion.nbt.tag.NumberTag;
-import com.viaversion.nbt.tag.ShortTag;
-import com.viaversion.nbt.tag.StringTag;
-import com.viaversion.nbt.tag.Tag;
 import com.viaversion.viaversion.util.ComponentUtil;
+import com.viaversion.viaversion.util.IdAndData;
 import java.util.HashMap;
 import java.util.Map;
-import com.viaversion.viaversion.util.IdAndData;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
 public abstract class LegacyBlockItemRewriter<C extends ClientboundPacketType, S extends ServerboundPacketType,
@@ -103,9 +103,9 @@ public abstract class LegacyBlockItemRewriter<C extends ClientboundPacketType, S
                 // Include data
                 short unmappedData = Short.parseShort(key.substring(dataSeparatorIndex + 1));
                 unmappedId = Integer.parseInt(key.substring(0, dataSeparatorIndex));
-                unmappedId = IdAndData.toRawData(unmappedId, unmappedData);
+                unmappedId = compress(unmappedId, unmappedData);
             } else {
-                unmappedId = IdAndData.toRawData(Integer.parseInt(key), -1);
+                unmappedId = compress(Integer.parseInt(key), -1);
             }
 
             mappings.put(unmappedId, new MappedLegacyBlockItem(id, data, name, type));
@@ -120,12 +120,12 @@ public abstract class LegacyBlockItemRewriter<C extends ClientboundPacketType, S
         // Special block color handling
         if (name != null && name.contains("%color%")) {
             for (int i = from; i <= to; i++) {
-                mappings.put(IdAndData.toRawData(i, -1), new MappedLegacyBlockItem(id, data, name.replace("%color%", BlockColors1_11_1.get(i - from)), type));
+                mappings.put(compress(i, -1), new MappedLegacyBlockItem(id, data, name.replace("%color%", BlockColors1_11_1.get(i - from)), type));
             }
         } else {
             MappedLegacyBlockItem mappedBlockItem = new MappedLegacyBlockItem(id, data, name, type);
             for (int i = from; i <= to; i++) {
-                mappings.put(IdAndData.toRawData(i, -1), mappedBlockItem);
+                mappings.put(compress(i, -1), mappedBlockItem);
             }
         }
     }
@@ -226,10 +226,9 @@ public abstract class LegacyBlockItemRewriter<C extends ClientboundPacketType, S
 
     public PacketHandler getFallingBlockHandler() {
         return wrapper -> {
-            final EntityTypes1_12.ObjectType type = EntityTypes1_12.ObjectType.findById(wrapper.get(Types.BYTE, 0));
+            final int objectData = wrapper.get(Types.INT, 0);
+            final EntityTypes1_12.ObjectType type = EntityTypes1_12.ObjectType.findById(wrapper.get(Types.BYTE, 0), objectData);
             if (type == EntityTypes1_12.ObjectType.FALLING_BLOCK) {
-                final int objectData = wrapper.get(Types.INT, 0);
-
                 final IdAndData block = handleBlock(objectData & 4095, objectData >> 12 & 15);
                 if (block == null) return;
 
@@ -360,13 +359,13 @@ public abstract class LegacyBlockItemRewriter<C extends ClientboundPacketType, S
     }
 
     private @Nullable MappedLegacyBlockItem getMappedBlock(int id, int data) {
-        MappedLegacyBlockItem mapping = blockReplacements.get(IdAndData.toRawData(id, data));
-        return mapping != null ? mapping : blockReplacements.get(IdAndData.toRawData(id, -1));
+        MappedLegacyBlockItem mapping = blockReplacements.get(compress(id, data));
+        return mapping != null ? mapping : blockReplacements.get(compress(id, -1));
     }
 
     private @Nullable MappedLegacyBlockItem getMappedItem(int id, int data) {
-        MappedLegacyBlockItem mapping = itemReplacements.get(IdAndData.toRawData(id, data));
-        return mapping != null ? mapping : itemReplacements.get(IdAndData.toRawData(id, -1));
+        MappedLegacyBlockItem mapping = itemReplacements.get(compress(id, data));
+        return mapping != null ? mapping : itemReplacements.get(compress(id, -1));
     }
 
     private @Nullable MappedLegacyBlockItem getMappedBlock(int rawId) {
@@ -379,6 +378,11 @@ public abstract class LegacyBlockItemRewriter<C extends ClientboundPacketType, S
         return BackwardsMappingDataLoader.INSTANCE.loadFromDataDir(name);
     }
 
+    protected int compress(final int id, final int data) {
+        // Using IdAndData for the internal storage can cause id overlaps in edge cases and would lead to wrong data
+        return (id << 16) | (data & 0xFFFF);
+    }
+
     private record Pos(int x, short y, int z) {
 
         public Pos(int x, int y, int z) {

common/src/main/java/com/viaversion/viabackwards/api/rewriters/LegacyEnchantmentRewriter.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/api/rewriters/LegacyEntityRewriter.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -36,7 +36,6 @@ import com.viaversion.viaversion.api.type.Types;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.function.Function;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
 public abstract class LegacyEntityRewriter<C extends ClientboundPacketType, T extends BackwardsProtocol<C, ?, ?, ?>> extends EntityRewriterBase<C, T> {
@@ -66,8 +65,10 @@ public abstract class LegacyEntityRewriter<C extends ClientboundPacketType, T ex
             public void register() {
                 map(Types.INT);
                 handler(wrapper -> {
-                    ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
-                    clientWorld.setEnvironment(wrapper.get(Types.INT, 0));
+                    ClientWorld clientWorld = wrapper.user().getClientWorld(protocol.getClass());
+                    if (clientWorld.setEnvironment(wrapper.get(Types.INT, 0))) {
+                        tracker(wrapper.user()).clearEntities();
+                    }
                 });
             }
         });
@@ -81,42 +82,24 @@ public abstract class LegacyEntityRewriter<C extends ClientboundPacketType, T ex
                 map(Types.UNSIGNED_BYTE); // 1 - Gamemode
                 map(Types.INT); // 2 - Dimension
                 handler(wrapper -> {
-                    ClientWorld clientChunks = wrapper.user().get(ClientWorld.class);
-                    clientChunks.setEnvironment(wrapper.get(Types.INT, 1));
-                    addTrackedEntity(wrapper, wrapper.get(Types.INT, 0), playerType);
+                    ClientWorld clientWorld = wrapper.user().getClientWorld(protocol.getClass());
+                    clientWorld.setEnvironment(wrapper.get(Types.INT, 1));
+
+                    final int entityId = wrapper.get(Types.INT, 0);
+                    addTrackedEntity(wrapper, entityId, playerType);
+                    tracker(wrapper.user()).setClientEntityId(entityId);
                 });
             }
         });
     }
 
-    @Override
-    public void registerSetEntityData(C packetType, Type<List<EntityData>> dataType, Type<List<EntityData>> mappedDataType) {
-        protocol.registerClientbound(packetType, new PacketHandlers() {
-            @Override
-            public void register() {
-                map(Types.VAR_INT); // 0 - Entity ID
-                if (dataType != null) {
-                    map(dataType, mappedDataType);
-                } else {
-                    map(mappedDataType);
-                }
-                handler(wrapper -> {
-                    List<EntityData> entityDataList = wrapper.get(mappedDataType, 0);
-                    handleEntityData(wrapper.get(Types.VAR_INT, 0), entityDataList, wrapper.user());
-                });
-            }
-        });
-    }
-
-    @Override
-    public void registerSetEntityData(C packetType, Type<List<EntityData>> dataType) {
-        registerSetEntityData(packetType, null, dataType);
-    }
-
     protected PacketHandler getMobSpawnRewriter(Type<List<EntityData>> dataType, IdSetter idSetter) {
         return wrapper -> {
             int entityId = wrapper.get(Types.VAR_INT, 0);
             EntityType type = tracker(wrapper.user()).entityType(entityId);
+            if (type == null) {
+                return;
+            }
 
             List<EntityData> entityDataList = wrapper.get(dataType, 0);
             handleEntityData(entityId, entityDataList, wrapper.user());
@@ -140,7 +123,16 @@ public abstract class LegacyEntityRewriter<C extends ClientboundPacketType, T ex
     }
 
     protected PacketHandler getObjectTrackerHandler() {
-        return wrapper -> addTrackedEntity(wrapper, wrapper.get(Types.VAR_INT, 0), objectTypeFromId(wrapper.get(Types.BYTE, 0)));
+        return wrapper -> {
+            int id = wrapper.get(Types.BYTE, 0);
+            int data = wrapper.get(Types.INT, 0);
+            EntityType type = objectTypeFromId(id, data);
+            if (type == null) {
+                return;
+            }
+
+            addTrackedEntity(wrapper, wrapper.get(Types.VAR_INT, 0), type);
+        };
     }
 
     protected PacketHandler getTrackerAndDataHandler(Type<List<EntityData>> dataType, EntityType entityType) {
@@ -151,19 +143,20 @@ public abstract class LegacyEntityRewriter<C extends ClientboundPacketType, T ex
         };
     }
 
-    protected PacketHandler getObjectRewriter(Function<Byte, ObjectType> objectGetter) {
+    protected PacketHandler getObjectRewriter(ObjectTypeGetter objectGetter) {
         return wrapper -> {
-            ObjectType type = objectGetter.apply(wrapper.get(Types.BYTE, 0));
+            int id = wrapper.get(Types.BYTE, 0);
+            int data = wrapper.get(Types.INT, 0);
+            ObjectType type = objectGetter.get(id, data);
             if (type == null) {
-                protocol.getLogger().warning("Could not find entity type " + wrapper.get(Types.BYTE, 0));
                 return;
             }
 
-            EntityReplacement data = getObjectData(type);
-            if (data != null) {
-                wrapper.set(Types.BYTE, 0, (byte) data.replacementId());
-                if (data.objectData() != -1) {
-                    wrapper.set(Types.INT, 0, data.objectData());
+            EntityReplacement replacement = getObjectData(type);
+            if (replacement != null) {
+                wrapper.set(Types.BYTE, 0, (byte) replacement.replacementId());
+                if (replacement.objectData() != -1) {
+                    wrapper.set(Types.INT, 0, replacement.objectData());
                 }
             }
         };
@@ -179,4 +172,10 @@ public abstract class LegacyEntityRewriter<C extends ClientboundPacketType, T ex
 
         void setId(PacketWrapper wrapper, int id);
     }
+
+    @FunctionalInterface
+    protected interface ObjectTypeGetter {
+
+        ObjectType get(int id, int data);
+    }
 }

common/src/main/java/com/viaversion/viabackwards/api/rewriters/LegacySoundRewriter.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/api/rewriters/MapColorRewriter.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -17,13 +17,47 @@
  */
 package com.viaversion.viabackwards.api.rewriters;
 
+import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
 import com.viaversion.viaversion.api.protocol.remapper.PacketHandler;
-import com.viaversion.viaversion.api.type.Type;
 import com.viaversion.viaversion.api.type.Types;
 import com.viaversion.viaversion.rewriter.IdRewriteFunction;
 
 public final class MapColorRewriter {
 
+    /**
+     * Rewrite map colors using the provided id rewriter.
+     *
+     * @param wrapper   packet wrapper
+     * @param rewriter  id rewriter returning mapped colors, or -1 if unmapped
+     * @param iconCount number of icons to read
+     */
+    public static void rewriteMapColors(PacketWrapper wrapper, IdRewriteFunction rewriter, int iconCount) {
+        for (int i = 0; i < iconCount; i++) {
+            wrapper.passthrough(Types.VAR_INT); // Type
+            wrapper.passthrough(Types.BYTE); // X
+            wrapper.passthrough(Types.BYTE); // Z
+            wrapper.passthrough(Types.BYTE); // Direction
+            wrapper.passthrough(Types.OPTIONAL_COMPONENT); // Display Name
+        }
+
+        short columns = wrapper.passthrough(Types.UNSIGNED_BYTE);
+        if (columns < 1) {
+            return;
+        }
+
+        wrapper.passthrough(Types.UNSIGNED_BYTE); // Rows
+        wrapper.passthrough(Types.UNSIGNED_BYTE); // X
+        wrapper.passthrough(Types.UNSIGNED_BYTE); // Z
+        byte[] data = wrapper.passthrough(Types.BYTE_ARRAY_PRIMITIVE);
+        for (int i = 0; i < data.length; i++) {
+            int color = data[i] & 0xFF;
+            int mappedColor = rewriter.rewrite(color);
+            if (mappedColor != -1) {
+                data[i] = (byte) mappedColor;
+            }
+        }
+    }
+
     /**
      * Returns a packethandler to rewrite map data color ids. Reading starts from the icon count.
      *
@@ -31,30 +65,6 @@ public final class MapColorRewriter {
      * @return packethandler to rewrite map data color ids
      */
     public static PacketHandler getRewriteHandler(IdRewriteFunction rewriter) {
-        return wrapper -> {
-            int iconCount = wrapper.passthrough(Types.VAR_INT);
-            for (int i = 0; i < iconCount; i++) {
-                wrapper.passthrough(Types.VAR_INT); // Type
-                wrapper.passthrough(Types.BYTE); // X
-                wrapper.passthrough(Types.BYTE); // Z
-                wrapper.passthrough(Types.BYTE); // Direction
-                wrapper.passthrough(Types.OPTIONAL_COMPONENT); // Display Name
-            }
-
-            short columns = wrapper.passthrough(Types.UNSIGNED_BYTE);
-            if (columns < 1) return;
-
-            wrapper.passthrough(Types.UNSIGNED_BYTE); // Rows
-            wrapper.passthrough(Types.UNSIGNED_BYTE); // X
-            wrapper.passthrough(Types.UNSIGNED_BYTE); // Z
-            byte[] data = wrapper.passthrough(Types.BYTE_ARRAY_PRIMITIVE);
-            for (int i = 0; i < data.length; i++) {
-                int color = data[i] & 0xFF;
-                int mappedColor = rewriter.rewrite(color);
-                if (mappedColor != -1) {
-                    data[i] = (byte) mappedColor;
-                }
-            }
-        };
+        return wrapper -> rewriteMapColors(wrapper, rewriter, wrapper.passthrough(Types.VAR_INT));
     }
 }

common/src/main/java/com/viaversion/viabackwards/api/rewriters/SoundRewriter.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -23,7 +23,6 @@ import com.viaversion.viaversion.api.minecraft.SoundEvent;
 import com.viaversion.viaversion.api.protocol.packet.ClientboundPacketType;
 import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
 import com.viaversion.viaversion.api.protocol.remapper.PacketHandler;
-import com.viaversion.viaversion.api.protocol.remapper.PacketHandlers;
 import com.viaversion.viaversion.api.type.Types;
 
 public class SoundRewriter<C extends ClientboundPacketType> extends com.viaversion.viaversion.rewriter.SoundRewriter<C> {
@@ -36,22 +35,14 @@ public class SoundRewriter<C extends ClientboundPacketType> extends com.viaversi
     }
 
     public void registerNamedSound(final C packetType) {
-        protocol.registerClientbound(packetType, new PacketHandlers() {
-            @Override
-            public void register() {
-                map(Types.STRING); // Sound identifier
-                handler(getNamedSoundHandler());
-            }
+        protocol.registerClientbound(packetType, wrapper -> {
+            wrapper.passthrough(Types.STRING); // Sound identifier
+            getNamedSoundHandler().handle(wrapper);
         });
     }
 
     public void registerStopSound(final C packetType) {
-        protocol.registerClientbound(packetType, new PacketHandlers() {
-            @Override
-            public void register() {
-                handler(getStopSoundHandler());
-            }
-        });
+        protocol.registerClientbound(packetType, wrapper -> getStopSoundHandler().handle(wrapper));
     }
 
     public PacketHandler getNamedSoundHandler() {

common/src/main/java/com/viaversion/viabackwards/api/rewriters/StructuredEnchantmentRewriter.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -25,7 +25,6 @@ import com.viaversion.nbt.tag.Tag;
 import com.viaversion.viabackwards.api.data.BackwardsMappingData;
 import com.viaversion.viabackwards.utils.ChatUtil;
 import com.viaversion.viaversion.api.data.Mappings;
-import com.viaversion.viaversion.api.minecraft.data.StructuredData;
 import com.viaversion.viaversion.api.minecraft.data.StructuredDataContainer;
 import com.viaversion.viaversion.api.minecraft.data.StructuredDataKey;
 import com.viaversion.viaversion.api.minecraft.item.Item;
@@ -60,32 +59,28 @@ public class StructuredEnchantmentRewriter {
             final String remappedName = mappingData.mappedEnchantmentName(id);
             return ComponentUtil.jsonStringToTag(ChatUtil.legacyToJsonString("§7" + remappedName, ENCHANTMENT_LEVEL_TRANSLATION.formatted(level), true));
         };
-        rewriteEnchantmentsToClient(data, StructuredDataKey.ENCHANTMENTS, idRewriteFunction, descriptionSupplier, false);
-        rewriteEnchantmentsToClient(data, StructuredDataKey.STORED_ENCHANTMENTS, idRewriteFunction, descriptionSupplier, true);
+        rewriteEnchantmentsToClient(data, StructuredDataKey.ENCHANTMENTS1_20_5, idRewriteFunction, descriptionSupplier, false);
+        rewriteEnchantmentsToClient(data, StructuredDataKey.STORED_ENCHANTMENTS1_20_5, idRewriteFunction, descriptionSupplier, true);
     }
 
     public void handleToServer(final Item item) {
         final StructuredDataContainer data = item.dataContainer();
-        final StructuredData<CompoundTag> customData = data.getNonEmpty(StructuredDataKey.CUSTOM_DATA);
-        if (customData == null) {
-            return;
+        final CompoundTag customData = data.get(StructuredDataKey.CUSTOM_DATA);
+        if (customData != null) {
+            rewriteEnchantmentsToServer(data, customData, StructuredDataKey.ENCHANTMENTS1_20_5);
+            rewriteEnchantmentsToServer(data, customData, StructuredDataKey.STORED_ENCHANTMENTS1_20_5);
         }
-
-        final CompoundTag tag = customData.value();
-        rewriteEnchantmentsToServer(data, tag, StructuredDataKey.ENCHANTMENTS);
-        rewriteEnchantmentsToServer(data, tag, StructuredDataKey.STORED_ENCHANTMENTS);
     }
 
     public void rewriteEnchantmentsToClient(final StructuredDataContainer data, final StructuredDataKey<Enchantments> key, final IdRewriteFunction rewriteFunction, final DescriptionSupplier descriptionSupplier, final boolean storedEnchant) {
-        final StructuredData<Enchantments> enchantmentsData = data.getNonEmpty(key);
-        if (enchantmentsData == null) {
+        final Enchantments enchantments = data.get(key);
+        if (enchantments == null || enchantments.size() == 0) {
             return;
         }
 
-        final CompoundTag tag = data.computeIfAbsent(StructuredDataKey.CUSTOM_DATA, $ -> new CompoundTag()).value();
-        final Enchantments enchantments = enchantmentsData.value();
         final List<Tag> loreToAdd = new ArrayList<>();
-        boolean changed = false;
+        boolean removedEnchantments = false;
+        boolean updatedLore = false;
 
         final ObjectIterator<Int2IntMap.Entry> iterator = enchantments.enchantments().int2IntEntrySet().iterator();
         final List<PendingIdChange> updatedIds = new ArrayList<>();
@@ -102,17 +97,20 @@ public class StructuredEnchantmentRewriter {
                 continue;
             }
 
-            final Tag description = descriptionSupplier.get(id, level);
-            if (description != null) {
-                if (!changed) {
-                    // Backup original before doing modifications
-                    itemRewriter.saveListTag(tag, asTag(enchantments), key.identifier());
-                    changed = true;
-                }
-
-                loreToAdd.add(description);
-                iterator.remove();
+            if (!removedEnchantments) {
+                // Backup original before doing modifications
+                final CompoundTag customData = customData(data);
+                itemRewriter.saveListTag(customData, asTag(enchantments), key.identifier());
+                removedEnchantments = true;
             }
+
+            final Tag description = descriptionSupplier.get(id, level);
+            if (description != null && enchantments.showInTooltip()) {
+                loreToAdd.add(description);
+                updatedLore = true;
+            }
+
+            iterator.remove();
         }
 
         // Remove all first, then add the new ones
@@ -123,37 +121,46 @@ public class StructuredEnchantmentRewriter {
             enchantments.add(change.mappedId(), change.level());
         }
 
-        if (loreToAdd.isEmpty()) {
-            // No removed enchantments
-            return;
-        }
-
-        // Add glint override if there are no enchantments left
-        if (!storedEnchant && enchantments.size() == 0) {
-            final StructuredData<Boolean> glintOverride = data.getNonEmpty(StructuredDataKey.ENCHANTMENT_GLINT_OVERRIDE);
-            if (glintOverride != null) {
-                tag.putBoolean(itemRewriter.nbtTagName("glint"), glintOverride.value());
-            } else {
-                tag.putBoolean(itemRewriter.nbtTagName("noglint"), true);
+        if (removedEnchantments) {
+            final CompoundTag tag = customData(data);
+            if (!storedEnchant && enchantments.size() == 0) {
+                // Add glint override if there are no enchantments left
+                final Boolean glintOverride = data.get(StructuredDataKey.ENCHANTMENT_GLINT_OVERRIDE);
+                if (glintOverride != null) {
+                    tag.putBoolean(itemRewriter.nbtTagName("glint"), glintOverride);
+                } else {
+                    tag.putBoolean(itemRewriter.nbtTagName("noglint"), true);
+                }
+                data.set(StructuredDataKey.ENCHANTMENT_GLINT_OVERRIDE, true);
+            }
+
+            if (enchantments.showInTooltip()) {
+                tag.putBoolean(itemRewriter.nbtTagName("show_" + key.identifier()), true);
             }
-            data.set(StructuredDataKey.ENCHANTMENT_GLINT_OVERRIDE, true);
         }
 
-        // Save original lore
-        final StructuredData<Tag[]> loreData = data.getNonEmpty(StructuredDataKey.LORE);
-        if (loreData != null) {
-            final List<Tag> loreList = Arrays.asList(loreData.value());
-            itemRewriter.saveGenericTagList(tag, loreList, "lore");
-            loreToAdd.addAll(loreList);
-        } else {
-            tag.putBoolean(itemRewriter.nbtTagName("nolore"), true);
+        if (updatedLore) {
+            // Save original lore
+            final CompoundTag tag = customData(data);
+            final Tag[] lore = data.get(StructuredDataKey.LORE);
+            if (lore != null) {
+                final List<Tag> loreList = Arrays.asList(lore);
+                itemRewriter.saveGenericTagList(tag, loreList, "lore");
+                loreToAdd.addAll(loreList);
+            } else {
+                tag.putBoolean(itemRewriter.nbtTagName("nolore"), true);
+            }
+            data.set(StructuredDataKey.LORE, loreToAdd.toArray(new Tag[0]));
         }
+    }
 
-        if (enchantments.showInTooltip()) {
-            tag.putBoolean(itemRewriter.nbtTagName("show_" + key.identifier()), true);
+    private CompoundTag customData(final StructuredDataContainer data) {
+        CompoundTag tag = data.get(StructuredDataKey.CUSTOM_DATA);
+        if (tag == null) {
+            tag = new CompoundTag();
+            data.set(StructuredDataKey.CUSTOM_DATA, tag);
         }
-
-        data.set(StructuredDataKey.LORE, loreToAdd.toArray(new Tag[0]));
+        return tag;
     }
 
     private ListTag<CompoundTag> asTag(final Enchantments enchantments) {

common/src/main/java/com/viaversion/viabackwards/api/rewriters/text/JsonNBTComponentRewriter.java

@@ -0,0 +1,64 @@
+/*
+ * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
+ * Copyright (C) 2016-2025 ViaVersion and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.viaversion.viabackwards.api.rewriters.text;
+
+import com.viaversion.nbt.tag.CompoundTag;
+import com.viaversion.nbt.tag.StringTag;
+import com.viaversion.viabackwards.api.BackwardsProtocol;
+import com.viaversion.viabackwards.api.data.TranslatableMappings;
+import com.viaversion.viaversion.api.connection.UserConnection;
+import com.viaversion.viaversion.api.protocol.packet.ClientboundPacketType;
+import com.viaversion.viaversion.libs.gson.JsonObject;
+import java.util.Map;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+public class JsonNBTComponentRewriter<C extends ClientboundPacketType> extends com.viaversion.viaversion.rewriter.text.JsonNBTComponentRewriter<C> implements TranslatableRewriter {
+
+    private final Map<String, String> translatables;
+
+    public JsonNBTComponentRewriter(final BackwardsProtocol<C, ?, ?, ?> protocol, final ReadType type) {
+        super(protocol, type);
+        this.translatables = TranslatableMappings.translatablesFor(protocol);
+    }
+
+    public JsonNBTComponentRewriter(final BackwardsProtocol<C, ?, ?, ?> protocol, final ReadType type, final String version) {
+        super(protocol, type);
+        this.translatables = TranslatableMappings.translatablesFor(version);
+    }
+
+    @Override
+    protected void handleTranslate(final JsonObject root, final String translate) {
+        final String newTranslate = mappedTranslationKey(translate);
+        if (newTranslate != null) {
+            root.addProperty("translate", newTranslate);
+        }
+    }
+
+    @Override
+    protected void handleTranslate(final UserConnection connection, final CompoundTag parentTag, final StringTag translateTag) {
+        final String newTranslate = mappedTranslationKey(translateTag.getValue());
+        if (newTranslate != null) {
+            parentTag.put("translate", new StringTag(newTranslate));
+        }
+    }
+
+    @Override
+    public @Nullable String mappedTranslationKey(final String translationKey) {
+        return translatables.get(translationKey);
+    }
+}

common/src/main/java/com/viaversion/viabackwards/api/rewriters/text/NBTComponentRewriter.java

@@ -0,0 +1,64 @@
+/*
+ * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
+ * Copyright (C) 2016-2025 ViaVersion and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.viaversion.viabackwards.api.rewriters.text;
+
+import com.viaversion.nbt.tag.CompoundTag;
+import com.viaversion.nbt.tag.StringTag;
+import com.viaversion.viabackwards.api.BackwardsProtocol;
+import com.viaversion.viabackwards.api.data.TranslatableMappings;
+import com.viaversion.viaversion.api.connection.UserConnection;
+import com.viaversion.viaversion.api.protocol.packet.ClientboundPacketType;
+import com.viaversion.viaversion.libs.gson.JsonObject;
+import java.util.Map;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+public class NBTComponentRewriter<C extends ClientboundPacketType> extends com.viaversion.viaversion.rewriter.text.NBTComponentRewriter<C> implements TranslatableRewriter {
+
+    private final Map<String, String> translatables;
+
+    public NBTComponentRewriter(final BackwardsProtocol<C, ?, ?, ?> protocol) {
+        super(protocol);
+        this.translatables = TranslatableMappings.translatablesFor(protocol);
+    }
+
+    public NBTComponentRewriter(final BackwardsProtocol<C, ?, ?, ?> protocol, final String version) {
+        super(protocol);
+        this.translatables = TranslatableMappings.translatablesFor(version);
+    }
+
+    @Override
+    protected void handleTranslate(final JsonObject root, final String translate) {
+        final String newTranslate = mappedTranslationKey(translate);
+        if (newTranslate != null) {
+            root.addProperty("translate", newTranslate);
+        }
+    }
+
+    @Override
+    protected void handleTranslate(final UserConnection connection, final CompoundTag parentTag, final StringTag translateTag) {
+        final String newTranslate = mappedTranslationKey(translateTag.getValue());
+        if (newTranslate != null) {
+            parentTag.put("translate", new StringTag(newTranslate));
+        }
+    }
+
+    @Override
+    public @Nullable String mappedTranslationKey(final String translationKey) {
+        return translatables.get(translationKey);
+    }
+}

common/src/main/java/com/viaversion/viabackwards/api/rewriters/text/TranslatableRewriter.java

@@ -0,0 +1,27 @@
+/*
+ * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
+ * Copyright (C) 2016-2025 ViaVersion and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.viaversion.viabackwards.api.rewriters.text;
+
+import com.viaversion.viaversion.api.rewriter.ComponentRewriter;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+public interface TranslatableRewriter extends ComponentRewriter {
+
+    @Nullable
+    String mappedTranslationKey(String translationKey);
+}

common/src/main/java/com/viaversion/viabackwards/protocol/template/BlockItemPacketRewriter1_99.java

@@ -0,0 +1,73 @@
+/*
+ * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
+ * Copyright (C) 2016-2025 ViaVersion and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.viaversion.viabackwards.protocol.template;
+
+import com.viaversion.viabackwards.api.rewriters.BackwardsStructuredItemRewriter;
+import com.viaversion.viaversion.api.type.types.chunk.ChunkType1_21_5;
+import com.viaversion.viaversion.api.type.types.version.Types1_21_4;
+import com.viaversion.viaversion.api.type.types.version.Types1_21_5;
+import com.viaversion.viaversion.protocols.v1_21_2to1_21_4.packet.ServerboundPacket1_21_4;
+import com.viaversion.viaversion.protocols.v1_21_2to1_21_4.packet.ServerboundPackets1_21_4;
+import com.viaversion.viaversion.protocols.v1_21_4to1_21_5.rewriter.RecipeDisplayRewriter1_21_5;
+import com.viaversion.viaversion.protocols.v1_21to1_21_2.packet.ClientboundPacket1_21_2;
+import com.viaversion.viaversion.protocols.v1_21to1_21_2.packet.ClientboundPackets1_21_2;
+import com.viaversion.viaversion.rewriter.BlockRewriter;
+import com.viaversion.viaversion.rewriter.RecipeDisplayRewriter;
+
+// To replace if needed:
+//   ChunkType1_21_5
+//   RecipeDisplayRewriter
+//   Types1_21_4
+final class BlockItemPacketRewriter1_99 extends BackwardsStructuredItemRewriter<ClientboundPacket1_21_2, ServerboundPacket1_21_4, Protocol1_98To1_99> {
+
+    public BlockItemPacketRewriter1_99(final Protocol1_98To1_99 protocol) {
+        super(protocol, Types1_21_4.ITEM, Types1_21_4.ITEM_ARRAY);
+        /*super(protocol,
+            Types1_21_4.ITEM, Types1_21_4.ITEM_ARRAY, Types1_OLD.ITEM, Types1_OLD.ITEM_ARRAY,
+            Types1_21_4.ITEM_COST, Types1_21_4.OPTIONAL_ITEM_COST, Types1_OLD.ITEM_COST, Types1_OLD.OPTIONAL_ITEM_COST
+        );*/
+    }
+
+    @Override
+    public void registerPackets() {
+        final BlockRewriter<ClientboundPacket1_21_2> blockRewriter = BlockRewriter.for1_20_2(protocol);
+        blockRewriter.registerBlockEvent(ClientboundPackets1_21_2.BLOCK_EVENT);
+        blockRewriter.registerBlockUpdate(ClientboundPackets1_21_2.BLOCK_UPDATE);
+        blockRewriter.registerSectionBlocksUpdate1_20(ClientboundPackets1_21_2.SECTION_BLOCKS_UPDATE);
+        blockRewriter.registerLevelEvent1_21(ClientboundPackets1_21_2.LEVEL_EVENT, 2001);
+        blockRewriter.registerLevelChunk1_19(ClientboundPackets1_21_2.LEVEL_CHUNK_WITH_LIGHT, ChunkType1_21_5::new);
+        blockRewriter.registerBlockEntityData(ClientboundPackets1_21_2.BLOCK_ENTITY_DATA);
+
+        // registerOpenScreen(ClientboundPackets1_21_2.OPEN_SCREEN);
+        protocol.registerClientbound(ClientboundPackets1_21_2.SET_CURSOR_ITEM, this::passthroughClientboundItem);
+        registerSetPlayerInventory(ClientboundPackets1_21_2.SET_PLAYER_INVENTORY);
+        registerCooldown1_21_2(ClientboundPackets1_21_2.COOLDOWN);
+        registerSetContent1_21_2(ClientboundPackets1_21_2.CONTAINER_SET_CONTENT);
+        registerSetSlot1_21_2(ClientboundPackets1_21_2.CONTAINER_SET_SLOT);
+        registerAdvancements1_20_3(ClientboundPackets1_21_2.UPDATE_ADVANCEMENTS);
+        registerSetEquipment(ClientboundPackets1_21_2.SET_EQUIPMENT);
+        registerMerchantOffers1_20_5(ClientboundPackets1_21_2.MERCHANT_OFFERS);
+        registerContainerClick1_21_5(ServerboundPackets1_21_4.CONTAINER_CLICK);
+        registerSetCreativeModeSlot1_21_5(ServerboundPackets1_21_4.SET_CREATIVE_MODE_SLOT, Types1_21_5.LENGTH_PREFIXED_ITEM, Types1_21_5.LENGTH_PREFIXED_ITEM); // Change this
+
+        final RecipeDisplayRewriter<ClientboundPacket1_21_2> recipeRewriter = new RecipeDisplayRewriter1_21_5<>(protocol);
+        recipeRewriter.registerUpdateRecipes(ClientboundPackets1_21_2.UPDATE_RECIPES);
+        recipeRewriter.registerRecipeBookAdd(ClientboundPackets1_21_2.RECIPE_BOOK_ADD);
+        recipeRewriter.registerPlaceGhostRecipe(ClientboundPackets1_21_2.PLACE_GHOST_RECIPE);
+    }
+}

common/src/main/java/com/viaversion/viabackwards/protocol/template/ComponentRewriter1_99.java

@@ -0,0 +1,42 @@
+/*
+ * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
+ * Copyright (C) 2016-2025 ViaVersion and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.viaversion.viabackwards.protocol.template;
+
+import com.viaversion.nbt.tag.CompoundTag;
+import com.viaversion.viabackwards.api.BackwardsProtocol;
+import com.viaversion.viabackwards.api.rewriters.text.NBTComponentRewriter;
+import com.viaversion.viaversion.api.connection.UserConnection;
+import com.viaversion.viaversion.protocols.v1_21to1_21_2.packet.ClientboundPacket1_21_2;
+
+final class ComponentRewriter1_99 extends NBTComponentRewriter<ClientboundPacket1_21_2> {
+
+    public ComponentRewriter1_99(final BackwardsProtocol<ClientboundPacket1_21_2, ?, ?, ?> protocol) {
+        super(protocol);
+    }
+
+    @Override
+    protected void handleShowItem(final UserConnection connection, final CompoundTag itemTag, final CompoundTag componentsTag) {
+        super.handleShowItem(connection, itemTag, componentsTag);
+        if (componentsTag == null) {
+            return;
+        }
+
+        // Remove or update data from componentsTag
+        // Newly added data which is not handled otherwise needs to be removed to prevent errors on the client
+    }
+}

common/src/main/java/com/viaversion/viabackwards/protocol/template/EntityPacketRewriter1_99.java

@@ -0,0 +1,91 @@
+/*
+ * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
+ * Copyright (C) 2016-2025 ViaVersion and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.viaversion.viabackwards.protocol.template;
+
+import com.viaversion.viabackwards.api.rewriters.EntityRewriter;
+import com.viaversion.viaversion.api.minecraft.entities.EntityType;
+import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_21_4;
+import com.viaversion.viaversion.api.type.types.version.Types1_21_4;
+import com.viaversion.viaversion.protocols.v1_20_5to1_21.packet.ClientboundConfigurationPackets1_21;
+import com.viaversion.viaversion.protocols.v1_21to1_21_2.packet.ClientboundPacket1_21_2;
+import com.viaversion.viaversion.protocols.v1_21to1_21_2.packet.ClientboundPackets1_21_2;
+import com.viaversion.viaversion.rewriter.RegistryDataRewriter;
+
+// Replace if needed
+//  Types1_OLD
+//  Types1_21_4
+final class EntityPacketRewriter1_99 extends EntityRewriter<ClientboundPacket1_21_2, Protocol1_98To1_99> {
+
+    public EntityPacketRewriter1_99(final Protocol1_98To1_99 protocol) {
+        super(protocol, Types1_21_4.ENTITY_DATA_TYPES.optionalComponentType, Types1_21_4.ENTITY_DATA_TYPES.booleanType);
+    }
+
+    @Override
+    public void registerPackets() {
+        registerTrackerWithData1_19(ClientboundPackets1_21_2.ADD_ENTITY, EntityTypes1_21_4.FALLING_BLOCK);
+        registerSetEntityData(ClientboundPackets1_21_2.SET_ENTITY_DATA, /*Types1_OLD.ENTITY_DATA_LIST, */Types1_21_4.ENTITY_DATA_LIST); // Specify old and new entity data list if changed
+        registerRemoveEntities(ClientboundPackets1_21_2.REMOVE_ENTITIES);
+        registerPlayerAbilities(ClientboundPackets1_21_2.PLAYER_ABILITIES);
+        registerGameEvent(ClientboundPackets1_21_2.GAME_EVENT);
+        registerLogin1_20_5(ClientboundPackets1_21_2.LOGIN);
+        registerRespawn1_20_5(ClientboundPackets1_21_2.RESPAWN);
+
+        final RegistryDataRewriter registryDataRewriter = new RegistryDataRewriter(protocol);
+        protocol.registerClientbound(ClientboundConfigurationPackets1_21.REGISTRY_DATA, registryDataRewriter::handle);
+    }
+
+    @Override
+    protected void registerRewrites() {
+        /*filter().handler((event, data) -> {
+            int id = data.dataType().typeId();
+            if (id >= ac) {
+                return;
+            } else if (id >= ab) {
+                id--;
+            }
+
+            data.setDataType(Types1_21_4.ENTITY_DATA_TYPES.byId(id));
+        });*/
+
+        registerEntityDataTypeHandler1_20_3(
+            Types1_21_4.ENTITY_DATA_TYPES.itemType,
+            Types1_21_4.ENTITY_DATA_TYPES.blockStateType,
+            Types1_21_4.ENTITY_DATA_TYPES.optionalBlockStateType,
+            Types1_21_4.ENTITY_DATA_TYPES.particleType,
+            Types1_21_4.ENTITY_DATA_TYPES.particlesType,
+            Types1_21_4.ENTITY_DATA_TYPES.componentType,
+            Types1_21_4.ENTITY_DATA_TYPES.optionalComponentType
+        );
+
+        // Remove entity data of new entity type
+        // filter().type(EntityTypes1_21_4.SNIFFER).removeIndex(newIndex);
+    }
+
+    @Override
+    public void onMappingDataLoaded() {
+        // If types changed, uncomment to map them
+        // mapTypes();
+
+        // mapEntityTypeWithData(EntityTypes1_21_4.SNIFFER, EntityTypes1_21_4.RAVAGER).tagName();
+    }
+
+    @Override
+    public EntityType typeFromId(final int type) {
+        return EntityTypes1_21_4.getTypeFromId(type);
+    }
+}

common/src/main/java/com/viaversion/viabackwards/protocol/template/Protocol1_98To1_99.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -15,86 +15,93 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-package com.viaversion.viabackwards.template.protocol;
+package com.viaversion.viabackwards.protocol.template;
 
 import com.viaversion.viabackwards.api.BackwardsProtocol;
 import com.viaversion.viabackwards.api.data.BackwardsMappingData;
 import com.viaversion.viabackwards.api.rewriters.SoundRewriter;
-import com.viaversion.viabackwards.api.rewriters.TranslatableRewriter;
-import com.viaversion.viabackwards.template.protocol.rewriter.BlockItemPacketRewriter1_99;
-import com.viaversion.viabackwards.template.protocol.rewriter.EntityPacketRewriter1_99;
+import com.viaversion.viabackwards.api.rewriters.text.NBTComponentRewriter;
 import com.viaversion.viaversion.api.connection.UserConnection;
-import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_20_5;
+import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_21_4;
 import com.viaversion.viaversion.api.protocol.packet.provider.PacketTypesProvider;
 import com.viaversion.viaversion.api.protocol.packet.provider.SimplePacketTypesProvider;
+import com.viaversion.viaversion.api.type.types.version.Types1_21_4;
 import com.viaversion.viaversion.data.entity.EntityTrackerBase;
-import com.viaversion.viaversion.protocols.v1_20_3to1_20_5.Protocol1_20_3To1_20_5;
-import com.viaversion.viaversion.protocols.v1_20_3to1_20_5.packet.ClientboundConfigurationPackets1_20_5;
-import com.viaversion.viaversion.protocols.v1_20_3to1_20_5.packet.ClientboundPacket1_20_5;
-import com.viaversion.viaversion.protocols.v1_20_3to1_20_5.packet.ClientboundPackets1_20_5;
 import com.viaversion.viaversion.protocols.v1_20_3to1_20_5.packet.ServerboundConfigurationPackets1_20_5;
-import com.viaversion.viaversion.protocols.v1_20_3to1_20_5.packet.ServerboundPacket1_20_5;
-import com.viaversion.viaversion.protocols.v1_20_3to1_20_5.packet.ServerboundPackets1_20_5;
-import com.viaversion.viaversion.rewriter.ComponentRewriter.ReadType;
+import com.viaversion.viaversion.protocols.v1_20_5to1_21.Protocol1_20_5To1_21;
+import com.viaversion.viaversion.protocols.v1_20_5to1_21.packet.ClientboundConfigurationPackets1_21;
+import com.viaversion.viaversion.protocols.v1_21_2to1_21_4.packet.ServerboundPacket1_21_4;
+import com.viaversion.viaversion.protocols.v1_21_2to1_21_4.packet.ServerboundPackets1_21_4;
+import com.viaversion.viaversion.protocols.v1_21to1_21_2.packet.ClientboundPacket1_21_2;
+import com.viaversion.viaversion.protocols.v1_21to1_21_2.packet.ClientboundPackets1_21_2;
+import com.viaversion.viaversion.rewriter.ParticleRewriter;
 import com.viaversion.viaversion.rewriter.StatisticsRewriter;
 import com.viaversion.viaversion.rewriter.TagRewriter;
 
 import static com.viaversion.viaversion.util.ProtocolUtil.packetTypeMap;
 
 // Placeholders to replace (in the entire package):
-//   Protocol1_98To_99, EntityPacketRewriter1_99, BlockItemPacketRewriter1_99
-//   Protocol1_20_5To1_20_3 (the ViaVersion protocol class the mappings depend on)
-//   ClientboundPacket1_20_5
-//   ServerboundPacket1_20_5
-//   ClientboundConfigurationPackets1_20_5
+//   Protocol1_98To1_99, EntityPacketRewriter1_99, BlockItemPacketRewriter1_99
+//   Protocol1_20_5To1_21 (the ViaVersion protocol class the mappings depend on)
+//   ClientboundPacket1_21_2
+//   ServerboundPacket1_21_4
+//   ClientboundConfigurationPackets1_21
 //   ServerboundConfigurationPackets1_20_5
-//   EntityTypes1_20_5 (UNMAPPED type)
+//   EntityTypes1_21_4 (UNMAPPED type)
+//   Types1_21_4.PARTICLE
 //   1.99, 1.98
-public final class Protocol1_98To1_99 extends BackwardsProtocol<ClientboundPacket1_20_5, ClientboundPacket1_20_5, ServerboundPacket1_20_5, ServerboundPacket1_20_5> {
+final class Protocol1_98To1_99 extends BackwardsProtocol<ClientboundPacket1_21_2, ClientboundPacket1_21_2, ServerboundPacket1_21_4, ServerboundPacket1_21_4> {
 
     // ViaBackwards uses its own mappings and also needs a translatablerewriter for translation mappings
-    public static final BackwardsMappingData MAPPINGS = new BackwardsMappingData("1.99", "1.98", Protocol1_20_3To1_20_5.class);
+    public static final BackwardsMappingData MAPPINGS = new BackwardsMappingData("1.99", "1.98", Protocol1_20_5To1_21.class);
     private final EntityPacketRewriter1_99 entityRewriter = new EntityPacketRewriter1_99(this);
     private final BlockItemPacketRewriter1_99 itemRewriter = new BlockItemPacketRewriter1_99(this);
-    private final TranslatableRewriter<ClientboundPacket1_20_5> translatableRewriter = new TranslatableRewriter<>(this, ReadType.NBT);
-    private final TagRewriter<ClientboundPacket1_20_5> tagRewriter = new TagRewriter<>(this);
+    private final ParticleRewriter<ClientboundPacket1_21_2> particleRewriter = new ParticleRewriter<>(this, Types1_21_4.PARTICLE/*, Types1_OLD.PARTICLE*/);
+    private final NBTComponentRewriter<ClientboundPacket1_21_2> translatableRewriter = new ComponentRewriter1_99(this);
+    private final TagRewriter<ClientboundPacket1_21_2> tagRewriter = new TagRewriter<>(this);
 
     public Protocol1_98To1_99() {
-        super(ClientboundPacket1_20_5.class, ClientboundPacket1_20_5.class, ServerboundPacket1_20_5.class, ServerboundPacket1_20_5.class);
+        super(ClientboundPacket1_21_2.class, ClientboundPacket1_21_2.class, ServerboundPacket1_21_4.class, ServerboundPacket1_21_4.class);
     }
 
     @Override
     protected void registerPackets() {
         super.registerPackets();
 
-        tagRewriter.registerGeneric(ClientboundPackets1_20_5.UPDATE_TAGS);
-        tagRewriter.registerGeneric(ClientboundConfigurationPackets1_20_5.UPDATE_TAGS);
+        tagRewriter.registerGeneric(ClientboundPackets1_21_2.UPDATE_TAGS);
+        tagRewriter.registerGeneric(ClientboundConfigurationPackets1_21.UPDATE_TAGS);
 
-        final SoundRewriter<ClientboundPacket1_20_5> soundRewriter = new SoundRewriter<>(this);
-        soundRewriter.registerSound1_19_3(ClientboundPackets1_20_5.SOUND);
-        soundRewriter.registerSound1_19_3(ClientboundPackets1_20_5.SOUND_ENTITY);
-        soundRewriter.registerStopSound(ClientboundPackets1_20_5.STOP_SOUND);
+        final SoundRewriter<ClientboundPacket1_21_2> soundRewriter = new SoundRewriter<>(this);
+        soundRewriter.registerSound1_19_3(ClientboundPackets1_21_2.SOUND);
+        soundRewriter.registerSound1_19_3(ClientboundPackets1_21_2.SOUND_ENTITY);
+        soundRewriter.registerStopSound(ClientboundPackets1_21_2.STOP_SOUND);
 
-        new StatisticsRewriter<>(this).register(ClientboundPackets1_20_5.AWARD_STATS);
-        //new AttributeRewriter<>(this).register1_21(ClientboundPackets1_20_5.ENTITY_PROPERTIES);
+        new StatisticsRewriter<>(this).register(ClientboundPackets1_21_2.AWARD_STATS);
+        //new AttributeRewriter<>(this).register1_21(ClientboundPackets1_21_2.UPDATE_ATTRIBUTES);
 
         // Registers translatable mappings (missing a whole bunch still)
-        //translatableRewriter.registerOpenWindow(ClientboundPackets1_20_5.OPEN_WINDOW); // Handled by registerOpenWindow in item rewriters
-        translatableRewriter.registerComponentPacket(ClientboundPackets1_20_5.SET_ACTION_BAR_TEXT);
-        translatableRewriter.registerComponentPacket(ClientboundPackets1_20_5.SET_TITLE_TEXT);
-        translatableRewriter.registerComponentPacket(ClientboundPackets1_20_5.SET_SUBTITLE_TEXT);
-        translatableRewriter.registerBossEvent(ClientboundPackets1_20_5.BOSS_EVENT);
-        translatableRewriter.registerComponentPacket(ClientboundPackets1_20_5.DISCONNECT);
-        translatableRewriter.registerTabList(ClientboundPackets1_20_5.TAB_LIST);
-        translatableRewriter.registerPlayerCombatKill1_20(ClientboundPackets1_20_5.PLAYER_COMBAT_KILL);
-        translatableRewriter.registerComponentPacket(ClientboundPackets1_20_5.SYSTEM_CHAT);
-        translatableRewriter.registerComponentPacket(ClientboundPackets1_20_5.DISGUISED_CHAT);
+        //translatableRewriter.registerOpenScreen1_14(ClientboundPackets1_21_2.OPEN_SCREEN); // Handled by registerOpenScreen in item rewriters
+        translatableRewriter.registerComponentPacket(ClientboundPackets1_21_2.SET_ACTION_BAR_TEXT);
+        translatableRewriter.registerComponentPacket(ClientboundPackets1_21_2.SET_TITLE_TEXT);
+        translatableRewriter.registerComponentPacket(ClientboundPackets1_21_2.SET_SUBTITLE_TEXT);
+        translatableRewriter.registerBossEvent(ClientboundPackets1_21_2.BOSS_EVENT);
+        translatableRewriter.registerComponentPacket(ClientboundPackets1_21_2.DISCONNECT);
+        translatableRewriter.registerTabList(ClientboundPackets1_21_2.TAB_LIST);
+        translatableRewriter.registerPlayerCombatKill1_20(ClientboundPackets1_21_2.PLAYER_COMBAT_KILL);
+        translatableRewriter.registerPlayerInfoUpdate1_21_4(ClientboundPackets1_21_2.PLAYER_INFO_UPDATE);
+        translatableRewriter.registerComponentPacket(ClientboundPackets1_21_2.SYSTEM_CHAT);
+        translatableRewriter.registerDisguisedChat(ClientboundPackets1_21_2.DISGUISED_CHAT);
+        translatableRewriter.registerPlayerChat1_21_5(ClientboundPackets1_21_2.PLAYER_CHAT);
         translatableRewriter.registerPing();
+
+        // If needed for any particle, item, or block changes. Extend ParticleRewriter for particle serializer changes
+        particleRewriter.registerLevelParticles1_21_4(ClientboundPackets1_21_2.LEVEL_PARTICLES);
+        particleRewriter.registerExplode1_21_2(ClientboundPackets1_21_2.EXPLODE);
     }
 
     @Override
     public void init(final UserConnection user) {
-        addEntityTracker(user, new EntityTrackerBase(user, EntityTypes1_20_5.PLAYER));
+        addEntityTracker(user, new EntityTrackerBase(user, EntityTypes1_21_4.PLAYER));
     }
 
     @Override
@@ -113,22 +120,27 @@ public final class Protocol1_98To1_99 extends BackwardsProtocol<ClientboundPacke
     }
 
     @Override
-    public TranslatableRewriter<ClientboundPacket1_20_5> getComponentRewriter() {
+    public ParticleRewriter<ClientboundPacket1_21_2> getParticleRewriter() {
+        return particleRewriter;
+    }
+
+    @Override
+    public NBTComponentRewriter<ClientboundPacket1_21_2> getComponentRewriter() {
         return translatableRewriter;
     }
 
     @Override
-    public TagRewriter<ClientboundPacket1_20_5> getTagRewriter() {
+    public TagRewriter<ClientboundPacket1_21_2> getTagRewriter() {
         return tagRewriter;
     }
 
     @Override
-    protected PacketTypesProvider<ClientboundPacket1_20_5, ClientboundPacket1_20_5, ServerboundPacket1_20_5, ServerboundPacket1_20_5> createPacketTypesProvider() {
+    protected PacketTypesProvider<ClientboundPacket1_21_2, ClientboundPacket1_21_2, ServerboundPacket1_21_4, ServerboundPacket1_21_4> createPacketTypesProvider() {
         return new SimplePacketTypesProvider<>(
-            packetTypeMap(unmappedClientboundPacketType, ClientboundPackets1_20_5.class, ClientboundConfigurationPackets1_20_5.class),
-            packetTypeMap(mappedClientboundPacketType, ClientboundPackets1_20_5.class, ClientboundConfigurationPackets1_20_5.class),
-            packetTypeMap(mappedServerboundPacketType, ServerboundPackets1_20_5.class, ServerboundConfigurationPackets1_20_5.class),
-            packetTypeMap(unmappedServerboundPacketType, ServerboundPackets1_20_5.class, ServerboundConfigurationPackets1_20_5.class)
+            packetTypeMap(unmappedClientboundPacketType, ClientboundPackets1_21_2.class, ClientboundConfigurationPackets1_21.class),
+            packetTypeMap(mappedClientboundPacketType, ClientboundPackets1_21_2.class, ClientboundConfigurationPackets1_21.class),
+            packetTypeMap(mappedServerboundPacketType, ServerboundPackets1_21_4.class, ServerboundConfigurationPackets1_20_5.class),
+            packetTypeMap(unmappedServerboundPacketType, ServerboundPackets1_21_4.class, ServerboundConfigurationPackets1_20_5.class)
         );
     }
-}
+}

common/src/main/java/com/viaversion/viabackwards/protocol/v1_10to1_9_3/Protocol1_10To1_9_3.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -21,7 +21,7 @@ package com.viaversion.viabackwards.protocol.v1_10to1_9_3;
 import com.viaversion.viabackwards.api.BackwardsProtocol;
 import com.viaversion.viabackwards.api.data.BackwardsMappingData;
 import com.viaversion.viabackwards.api.rewriters.SoundRewriter;
-import com.viaversion.viabackwards.api.rewriters.TranslatableRewriter;
+import com.viaversion.viabackwards.api.rewriters.text.JsonNBTComponentRewriter;
 import com.viaversion.viabackwards.protocol.v1_10to1_9_3.rewriter.BlockItemPacketRewriter1_10;
 import com.viaversion.viabackwards.protocol.v1_10to1_9_3.rewriter.EntityPacketRewriter1_10;
 import com.viaversion.viaversion.api.connection.UserConnection;
@@ -34,7 +34,7 @@ import com.viaversion.viaversion.api.type.Types;
 import com.viaversion.viaversion.data.entity.EntityTrackerBase;
 import com.viaversion.viaversion.protocols.v1_9_1to1_9_3.packet.ClientboundPackets1_9_3;
 import com.viaversion.viaversion.protocols.v1_9_1to1_9_3.packet.ServerboundPackets1_9_3;
-import com.viaversion.viaversion.rewriter.ComponentRewriter;
+import com.viaversion.viaversion.rewriter.text.ComponentRewriterBase;
 
 public class Protocol1_10To1_9_3 extends BackwardsProtocol<ClientboundPackets1_9_3, ClientboundPackets1_9_3, ServerboundPackets1_9_3, ServerboundPackets1_9_3> {
 
@@ -92,17 +92,14 @@ public class Protocol1_10To1_9_3 extends BackwardsProtocol<ClientboundPackets1_9
             }
         });
 
-        TranslatableRewriter<ClientboundPackets1_9_3> componentRewriter = new TranslatableRewriter<>(this, ComponentRewriter.ReadType.JSON);
+        JsonNBTComponentRewriter<ClientboundPackets1_9_3> componentRewriter = new JsonNBTComponentRewriter<>(this, ComponentRewriterBase.ReadType.JSON);
         componentRewriter.registerComponentPacket(ClientboundPackets1_9_3.CHAT);
     }
 
     @Override
     public void init(UserConnection user) {
-        if (!user.has(ClientWorld.class)) {
-            user.put(new ClientWorld());
-        }
-
         user.addEntityTracker(this.getClass(), new EntityTrackerBase(user, EntityTypes1_10.EntityType.PLAYER));
+        user.addClientWorld(this.getClass(), new ClientWorld());
     }
 
     @Override

common/src/main/java/com/viaversion/viabackwards/protocol/v1_10to1_9_3/rewriter/BlockItemPacketRewriter1_10.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -50,7 +50,7 @@ public class BlockItemPacketRewriter1_10 extends LegacyBlockItemRewriter<Clientb
         registerSetCreativeModeSlot(ServerboundPackets1_9_3.SET_CREATIVE_MODE_SLOT);
 
         protocol.registerClientbound(ClientboundPackets1_9_3.LEVEL_CHUNK, wrapper -> {
-            ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
+            ClientWorld clientWorld = wrapper.user().getClientWorld(Protocol1_10To1_9_3.class);
 
             ChunkType1_9_3 type = ChunkType1_9_3.forEnvironment(clientWorld.getEnvironment());
             Chunk chunk = wrapper.passthrough(type);

common/src/main/java/com/viaversion/viabackwards/protocol/v1_10to1_9_3/rewriter/EntityPacketRewriter1_10.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -89,6 +89,9 @@ public class EntityPacketRewriter1_10 extends LegacyEntityRewriter<ClientboundPa
                 handler(wrapper -> {
                     int entityId = wrapper.get(Types.VAR_INT, 0);
                     EntityType type = tracker(wrapper.user()).entityType(entityId);
+                    if (type == null) {
+                        return;
+                    }
 
                     List<EntityData> entityDataList = wrapper.get(Types1_9.ENTITY_DATA_LIST, 0);
                     handleEntityData(wrapper.get(Types.VAR_INT, 0), entityDataList, wrapper.user());
@@ -161,11 +164,11 @@ public class EntityPacketRewriter1_10 extends LegacyEntityRewriter<ClientboundPa
 
     @Override
     public EntityType typeFromId(int typeId) {
-        return EntityTypes1_10.getTypeFromId(typeId, false);
+        return EntityTypes1_10.EntityType.findById(typeId);
     }
 
     @Override
-    public EntityType objectTypeFromId(int typeId) {
-        return EntityTypes1_10.getTypeFromId(typeId, true);
+    public EntityType objectTypeFromId(int typeId, int data) {
+        return EntityTypes1_10.ObjectType.getEntityType(typeId, data);
     }
 }

common/src/main/java/com/viaversion/viabackwards/protocol/v1_11_1to1_11/Protocol1_11_1To1_11.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -39,11 +39,8 @@ public class Protocol1_11_1To1_11 extends BackwardsProtocol<ClientboundPackets1_
 
     @Override
     public void init(UserConnection user) {
-        if (!user.has(ClientWorld.class)) {
-            user.put(new ClientWorld());
-        }
-
         user.addEntityTracker(this.getClass(), new EntityTrackerBase(user, EntityTypes1_11.EntityType.PLAYER));
+        user.addClientWorld(this.getClass(), new ClientWorld());
     }
 
     @Override

common/src/main/java/com/viaversion/viabackwards/protocol/v1_11_1to1_11/rewriter/EntityPacketRewriter1_11_1.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -117,11 +117,11 @@ public class EntityPacketRewriter1_11_1 extends LegacyEntityRewriter<Clientbound
 
     @Override
     public EntityType typeFromId(int typeId) {
-        return EntityTypes1_11.getTypeFromId(typeId, false);
+        return EntityTypes1_11.EntityType.findById(typeId);
     }
 
     @Override
-    public EntityType objectTypeFromId(int typeId) {
-        return EntityTypes1_11.getTypeFromId(typeId, true);
+    public EntityType objectTypeFromId(int typeId, int data) {
+        return EntityTypes1_11.ObjectType.getEntityType(typeId, data);
     }
 }

common/src/main/java/com/viaversion/viabackwards/protocol/v1_11_1to1_11/rewriter/ItemPacketRewriter1_11_1.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_11to1_10/Protocol1_11To1_10.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -21,7 +21,7 @@ package com.viaversion.viabackwards.protocol.v1_11to1_10;
 import com.viaversion.viabackwards.api.BackwardsProtocol;
 import com.viaversion.viabackwards.api.data.BackwardsMappingData;
 import com.viaversion.viabackwards.api.rewriters.SoundRewriter;
-import com.viaversion.viabackwards.api.rewriters.TranslatableRewriter;
+import com.viaversion.viabackwards.api.rewriters.text.JsonNBTComponentRewriter;
 import com.viaversion.viabackwards.protocol.v1_11to1_10.rewriter.BlockItemPacketRewriter1_11;
 import com.viaversion.viabackwards.protocol.v1_11to1_10.rewriter.EntityPacketRewriter1_11;
 import com.viaversion.viabackwards.protocol.v1_11to1_10.rewriter.PlayerPacketRewriter1_11;
@@ -30,17 +30,16 @@ import com.viaversion.viaversion.api.connection.UserConnection;
 import com.viaversion.viaversion.api.minecraft.ClientWorld;
 import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_11;
 import com.viaversion.viaversion.data.entity.EntityTrackerBase;
-import com.viaversion.viaversion.protocols.v1_11_1to1_12.packet.ClientboundPackets1_12;
 import com.viaversion.viaversion.protocols.v1_9_1to1_9_3.packet.ClientboundPackets1_9_3;
 import com.viaversion.viaversion.protocols.v1_9_1to1_9_3.packet.ServerboundPackets1_9_3;
-import com.viaversion.viaversion.rewriter.ComponentRewriter;
+import com.viaversion.viaversion.rewriter.text.ComponentRewriterBase;
 
 public class Protocol1_11To1_10 extends BackwardsProtocol<ClientboundPackets1_9_3, ClientboundPackets1_9_3, ServerboundPackets1_9_3, ServerboundPackets1_9_3> {
 
     public static final BackwardsMappingData MAPPINGS = new BackwardsMappingData("1.11", "1.10");
     private final EntityPacketRewriter1_11 entityRewriter = new EntityPacketRewriter1_11(this);
     private final BlockItemPacketRewriter1_11 itemRewriter = new BlockItemPacketRewriter1_11(this);
-    private TranslatableRewriter<ClientboundPackets1_9_3> componentRewriter;
+    private JsonNBTComponentRewriter<ClientboundPackets1_9_3> componentRewriter;
 
     public Protocol1_11To1_10() {
         super(ClientboundPackets1_9_3.class, ClientboundPackets1_9_3.class, ServerboundPackets1_9_3.class, ServerboundPackets1_9_3.class);
@@ -56,17 +55,14 @@ public class Protocol1_11To1_10 extends BackwardsProtocol<ClientboundPackets1_9_
         soundRewriter.registerNamedSound(ClientboundPackets1_9_3.CUSTOM_SOUND);
         soundRewriter.registerSound(ClientboundPackets1_9_3.SOUND);
 
-        componentRewriter = new TranslatableRewriter<>(this, ComponentRewriter.ReadType.JSON);
+        componentRewriter = new JsonNBTComponentRewriter<>(this, ComponentRewriterBase.ReadType.JSON);
         componentRewriter.registerComponentPacket(ClientboundPackets1_9_3.CHAT);
     }
 
     @Override
     public void init(UserConnection user) {
-        if (!user.has(ClientWorld.class)) {
-            user.put(new ClientWorld());
-        }
-
         user.addEntityTracker(this.getClass(), new EntityTrackerBase(user, EntityTypes1_11.EntityType.PLAYER));
+        user.addClientWorld(this.getClass(), new ClientWorld());
 
         if (!user.has(WindowTracker.class)) {
             user.put(new WindowTracker());
@@ -88,7 +84,7 @@ public class Protocol1_11To1_10 extends BackwardsProtocol<ClientboundPackets1_9_
         return itemRewriter;
     }
 
-    public TranslatableRewriter<ClientboundPackets1_9_3> getComponentRewriter() {
+    public JsonNBTComponentRewriter<ClientboundPackets1_9_3> getComponentRewriter() {
         return componentRewriter;
     }
 

common/src/main/java/com/viaversion/viabackwards/protocol/v1_11to1_10/data/SplashPotionMappings1_10.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_11to1_10/rewriter/BlockItemPacketRewriter1_11.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -60,7 +60,7 @@ public class BlockItemPacketRewriter1_11 extends LegacyBlockItemRewriter<Clientb
         protocol.registerClientbound(ClientboundPackets1_9_3.CONTAINER_SET_SLOT, new PacketHandlers() {
             @Override
             public void register() {
-                map(Types.UNSIGNED_BYTE); // 0 - Window ID
+                map(Types.BYTE); // 0 - Window ID
                 map(Types.SHORT); // 1 - Slot ID
                 map(Types.ITEM1_8); // 2 - Slot Value
 
@@ -118,7 +118,7 @@ public class BlockItemPacketRewriter1_11 extends LegacyBlockItemRewriter<Clientb
         protocol.registerServerbound(ServerboundPackets1_9_3.CONTAINER_CLICK, new PacketHandlers() {
             @Override
             public void register() {
-                map(Types.UNSIGNED_BYTE); // 0 - Window ID
+                map(Types.BYTE); // 0 - Window ID
                 map(Types.SHORT); // 1 - Slot
                 map(Types.BYTE); // 2 - Button
                 map(Types.SHORT); // 3 - Action number
@@ -147,7 +147,7 @@ public class BlockItemPacketRewriter1_11 extends LegacyBlockItemRewriter<Clientb
         registerSetCreativeModeSlot(ServerboundPackets1_9_3.SET_CREATIVE_MODE_SLOT);
 
         protocol.registerClientbound(ClientboundPackets1_9_3.LEVEL_CHUNK, wrapper -> {
-            ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
+            ClientWorld clientWorld = wrapper.user().getClientWorld(Protocol1_11To1_10.class);
 
             ChunkType1_9_3 type = ChunkType1_9_3.forEnvironment(clientWorld.getEnvironment()); // Use the 1.10 Chunk type since nothing changed.
             Chunk chunk = wrapper.passthrough(type);

common/src/main/java/com/viaversion/viabackwards/protocol/v1_11to1_10/rewriter/EntityPacketRewriter1_11.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -159,9 +159,15 @@ public class EntityPacketRewriter1_11 extends LegacyEntityRewriter<ClientboundPa
                 map(Types.BYTE); // 1 - Entity Status
 
                 handler(wrapper -> {
-                    byte b = wrapper.get(Types.BYTE, 0);
+                    final int entityId = wrapper.get(Types.INT, 0);
+                    if (entityId != tracker(wrapper.user()).clientEntityId()) {
+                        // Entity events are sent for all players, but we only want to apply this for the self player
+                        return;
+                    }
 
-                    if (b == 35) {
+                    final byte entityStatus = wrapper.get(Types.BYTE, 0);
+                    if (entityStatus == 35) {
+                        // TODO spawn particles?
                         wrapper.clearPacket();
                         wrapper.setPacketType(ClientboundPackets1_9_3.GAME_EVENT);
                         wrapper.write(Types.UNSIGNED_BYTE, (short) 10); // Play Elder Guardian animation
@@ -358,11 +364,11 @@ public class EntityPacketRewriter1_11 extends LegacyEntityRewriter<ClientboundPa
 
     @Override
     public EntityType typeFromId(int typeId) {
-        return EntityTypes1_11.getTypeFromId(typeId, false);
+        return EntityTypes1_11.EntityType.findById(typeId);
     }
 
     @Override
-    public EntityType objectTypeFromId(int typeId) {
-        return EntityTypes1_11.getTypeFromId(typeId, true);
+    public EntityType objectTypeFromId(int typeId, int data) {
+        return EntityTypes1_11.ObjectType.getEntityType(typeId, data);
     }
 }

common/src/main/java/com/viaversion/viabackwards/protocol/v1_11to1_10/rewriter/PlayerPacketRewriter1_11.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_11to1_10/storage/ChestedHorseStorage.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_11to1_10/storage/WindowTracker.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_12_1to1_12/Protocol1_12_1To1_12.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_12_2to1_12_1/Protocol1_12_2To1_12_1.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_12_2to1_12_1/storage/KeepAliveTracker.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_12to1_11_1/Protocol1_12To1_11_1.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -71,11 +71,8 @@ public class Protocol1_12To1_11_1 extends BackwardsProtocol<ClientboundPackets1_
 
     @Override
     public void init(UserConnection user) {
-        if (!user.has(ClientWorld.class)) {
-            user.put(new ClientWorld());
-        }
-
         user.addEntityTracker(this.getClass(), new EntityTrackerBase(user, EntityTypes1_12.EntityType.PLAYER));
+        user.addClientWorld(this.getClass(), new ClientWorld());
 
         user.put(new ShoulderTracker(user));
     }

common/src/main/java/com/viaversion/viabackwards/protocol/v1_12to1_11_1/data/BlockColors1_11_1.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_12to1_11_1/data/MapColorMappings1_11_1.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_12to1_11_1/rewriter/BlockItemPacketRewriter1_12.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -18,6 +18,7 @@
 
 package com.viaversion.viabackwards.protocol.v1_12to1_11_1.rewriter;
 
+import com.viaversion.nbt.tag.StringTag;
 import com.viaversion.viabackwards.api.rewriters.LegacyBlockItemRewriter;
 import com.viaversion.viabackwards.protocol.v1_12to1_11_1.Protocol1_12To1_11_1;
 import com.viaversion.viabackwards.protocol.v1_12to1_11_1.data.MapColorMappings1_11_1;
@@ -38,6 +39,9 @@ import com.viaversion.viaversion.protocols.v1_11_1to1_12.packet.ServerboundPacke
 import com.viaversion.viaversion.protocols.v1_9_1to1_9_3.packet.ServerboundPackets1_9_3;
 import java.util.Iterator;
 import java.util.Map;
+import com.viaversion.viaversion.util.ComponentUtil;
+import com.viaversion.viaversion.util.Key;
+import com.viaversion.viaversion.util.SerializerVersion;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
 public class BlockItemPacketRewriter1_12 extends LegacyBlockItemRewriter<ClientboundPackets1_12, ServerboundPackets1_9_3, Protocol1_12To1_11_1> {
@@ -91,7 +95,7 @@ public class BlockItemPacketRewriter1_12 extends LegacyBlockItemRewriter<Clientb
         protocol.registerServerbound(ServerboundPackets1_9_3.CONTAINER_CLICK, new PacketHandlers() {
             @Override
             public void register() {
-                map(Types.UNSIGNED_BYTE); // 0 - Window ID
+                map(Types.BYTE); // 0 - Window ID
                 map(Types.SHORT); // 1 - Slot
                 map(Types.BYTE); // 2 - Button
                 map(Types.SHORT); // 3 - Action number
@@ -108,7 +112,7 @@ public class BlockItemPacketRewriter1_12 extends LegacyBlockItemRewriter<Clientb
 
                         // Apologize (may happen in some cases, maybe if inventory is full?)
                         PacketWrapper confirm = wrapper.create(ServerboundPackets1_12.CONTAINER_ACK);
-                        confirm.write(Types.UNSIGNED_BYTE, wrapper.get(Types.UNSIGNED_BYTE, 0));
+                        confirm.write(Types.BYTE, wrapper.get(Types.BYTE, 0));
                         confirm.write(Types.SHORT, wrapper.get(Types.SHORT, 1));
                         confirm.write(Types.BOOLEAN, false); // Success - not used
 
@@ -127,12 +131,21 @@ public class BlockItemPacketRewriter1_12 extends LegacyBlockItemRewriter<Clientb
         registerSetCreativeModeSlot(ServerboundPackets1_9_3.SET_CREATIVE_MODE_SLOT);
 
         protocol.registerClientbound(ClientboundPackets1_12.LEVEL_CHUNK, wrapper -> {
-            ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
+            ClientWorld clientWorld = wrapper.user().getClientWorld(Protocol1_12To1_11_1.class);
 
             ChunkType1_9_3 type = ChunkType1_9_3.forEnvironment(clientWorld.getEnvironment()); // Use the 1.9.4 Chunk type since nothing changed.
             Chunk chunk = wrapper.passthrough(type);
 
             handleChunk(chunk);
+            for (final CompoundTag tag : chunk.getBlockEntities()) {
+                final String id = tag.getString("id");
+                if (id == null) {
+                    continue;
+                }
+                if (Key.stripMinecraftNamespace(id).equals("sign")) {
+                    handleSignText(tag);
+                }
+            }
         });
 
         protocol.registerClientbound(ClientboundPackets1_12.BLOCK_ENTITY_DATA, new PacketHandlers() {
@@ -143,9 +156,14 @@ public class BlockItemPacketRewriter1_12 extends LegacyBlockItemRewriter<Clientb
                 map(Types.NAMED_COMPOUND_TAG); // 2 - NBT
 
                 handler(wrapper -> {
-                    // Remove bed color
-                    if (wrapper.get(Types.UNSIGNED_BYTE, 0) == 11)
+                    final short type = wrapper.get(Types.UNSIGNED_BYTE, 0);
+                    if (type == 9) {
+                        final CompoundTag tag = wrapper.get(Types.NAMED_COMPOUND_TAG, 0);
+                        handleSignText(tag);
+                    } else if (type == 11) {
+                        // Remove bed color
                         wrapper.cancel();
+                    }
                 });
             }
         });
@@ -170,6 +188,18 @@ public class BlockItemPacketRewriter1_12 extends LegacyBlockItemRewriter<Clientb
         });
     }
 
+    private void handleSignText(final CompoundTag tag) {
+        // Push signs through component conversion, fixes https://github.com/ViaVersion/ViaBackwards/issues/835
+        for (int i = 0; i < 4; i++) {
+            final StringTag lineTag = tag.getStringTag("Text" + (i + 1));
+            if (lineTag == null) {
+                continue;
+            }
+
+            lineTag.setValue(ComponentUtil.convertJsonOrEmpty(lineTag.getValue(), SerializerVersion.V1_12, SerializerVersion.V1_9).toString());
+        }
+    }
+
     @Override
     public @Nullable Item handleItemToClient(UserConnection connection, Item item) {
         if (item == null) return null;

common/src/main/java/com/viaversion/viabackwards/protocol/v1_12to1_11_1/rewriter/ComponentRewriter1_12.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -18,18 +18,18 @@
 
 package com.viaversion.viabackwards.protocol.v1_12to1_11_1.rewriter;
 
-import com.viaversion.viabackwards.api.rewriters.TranslatableRewriter;
+import com.viaversion.viabackwards.api.rewriters.text.JsonNBTComponentRewriter;
 import com.viaversion.viabackwards.protocol.v1_12to1_11_1.Protocol1_12To1_11_1;
 import com.viaversion.viaversion.api.connection.UserConnection;
 import com.viaversion.viaversion.libs.gson.JsonElement;
 import com.viaversion.viaversion.libs.gson.JsonObject;
 import com.viaversion.viaversion.protocols.v1_11_1to1_12.packet.ClientboundPackets1_12;
-import com.viaversion.viaversion.rewriter.ComponentRewriter;
+import com.viaversion.viaversion.rewriter.text.ComponentRewriterBase;
 
-public class ComponentRewriter1_12 extends TranslatableRewriter<ClientboundPackets1_12> {
+public class ComponentRewriter1_12 extends JsonNBTComponentRewriter<ClientboundPackets1_12> {
 
     public ComponentRewriter1_12(Protocol1_12To1_11_1 protocol) {
-        super(protocol, ComponentRewriter.ReadType.JSON);
+        super(protocol, ComponentRewriterBase.ReadType.JSON);
     }
 
     @Override

common/src/main/java/com/viaversion/viabackwards/protocol/v1_12to1_11_1/rewriter/EntityPacketRewriter1_12.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -18,6 +18,7 @@
 
 package com.viaversion.viabackwards.protocol.v1_12to1_11_1.rewriter;
 
+import com.viaversion.nbt.tag.CompoundTag;
 import com.viaversion.viabackwards.api.rewriters.LegacyEntityRewriter;
 import com.viaversion.viabackwards.protocol.v1_12to1_11_1.Protocol1_12To1_11_1;
 import com.viaversion.viabackwards.protocol.v1_12to1_11_1.storage.ParrotStorage;
@@ -31,10 +32,10 @@ import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
 import com.viaversion.viaversion.api.protocol.remapper.PacketHandlers;
 import com.viaversion.viaversion.api.type.Types;
 import com.viaversion.viaversion.api.type.types.version.Types1_12;
+import com.viaversion.viaversion.api.type.types.version.Types1_9;
 import com.viaversion.viaversion.libs.gson.JsonElement;
 import com.viaversion.viaversion.protocols.v1_11_1to1_12.packet.ClientboundPackets1_12;
 import com.viaversion.viaversion.protocols.v1_9_1to1_9_3.packet.ClientboundPackets1_9_3;
-import com.viaversion.nbt.tag.CompoundTag;
 
 public class EntityPacketRewriter1_12 extends LegacyEntityRewriter<ClientboundPackets1_12, Protocol1_12To1_11_1> {
 
@@ -83,13 +84,13 @@ public class EntityPacketRewriter1_12 extends LegacyEntityRewriter<ClientboundPa
                 map(Types.SHORT); // 9 - Velocity X
                 map(Types.SHORT); // 10 - Velocity Y
                 map(Types.SHORT); // 11 - Velocity Z
-                map(Types1_12.ENTITY_DATA_LIST); // 12 - Entity data
+                map(Types1_12.ENTITY_DATA_LIST, Types1_9.ENTITY_DATA_LIST); // 12 - Entity data
 
                 // Track entity
                 handler(getTrackerHandler());
 
                 // Rewrite entity type / data
-                handler(getMobSpawnRewriter1_11(Types1_12.ENTITY_DATA_LIST));
+                handler(getMobSpawnRewriter1_11(Types1_9.ENTITY_DATA_LIST));
             }
         });
 
@@ -105,9 +106,9 @@ public class EntityPacketRewriter1_12 extends LegacyEntityRewriter<ClientboundPa
                 map(Types.DOUBLE); // 4 - Z
                 map(Types.BYTE); // 5 - Yaw
                 map(Types.BYTE); // 6 - Pitch
-                map(Types1_12.ENTITY_DATA_LIST); // 7 - Entity data list
+                map(Types1_12.ENTITY_DATA_LIST, Types1_9.ENTITY_DATA_LIST); // 7 - Entity data list
 
-                handler(getTrackerAndDataHandler(Types1_12.ENTITY_DATA_LIST, EntityTypes1_12.EntityType.PLAYER));
+                handler(getTrackerAndDataHandler(Types1_9.ENTITY_DATA_LIST, EntityTypes1_12.EntityType.PLAYER));
             }
         });
 
@@ -118,9 +119,8 @@ public class EntityPacketRewriter1_12 extends LegacyEntityRewriter<ClientboundPa
                 map(Types.UNSIGNED_BYTE); // 1 - Gamemode
                 map(Types.INT); // 2 - Dimension
 
-                handler(getTrackerHandler(EntityTypes1_12.EntityType.PLAYER, Types.INT));
-
                 handler(getDimensionHandler(1));
+                handler(getPlayerTrackerHandler());
 
                 handler(wrapper -> {
                     ShoulderTracker tracker = wrapper.user().get(ShoulderTracker.class);
@@ -142,7 +142,7 @@ public class EntityPacketRewriter1_12 extends LegacyEntityRewriter<ClientboundPa
 
         registerRespawn(ClientboundPackets1_12.RESPAWN);
         registerRemoveEntities(ClientboundPackets1_12.REMOVE_ENTITIES);
-        registerSetEntityData(ClientboundPackets1_12.SET_ENTITY_DATA, Types1_12.ENTITY_DATA_LIST);
+        registerSetEntityData(ClientboundPackets1_12.SET_ENTITY_DATA, Types1_12.ENTITY_DATA_LIST, Types1_9.ENTITY_DATA_LIST);
 
         protocol.registerClientbound(ClientboundPackets1_12.UPDATE_ATTRIBUTES, new PacketHandlers() {
             @Override
@@ -285,11 +285,11 @@ public class EntityPacketRewriter1_12 extends LegacyEntityRewriter<ClientboundPa
 
     @Override
     public EntityType typeFromId(int typeId) {
-        return EntityTypes1_12.getTypeFromId(typeId, false);
+        return EntityTypes1_12.EntityType.findById(typeId);
     }
 
     @Override
-    public EntityType objectTypeFromId(int typeId) {
-        return EntityTypes1_12.getTypeFromId(typeId, true);
+    public EntityType objectTypeFromId(int typeId, int data) {
+        return EntityTypes1_12.ObjectType.getEntityType(typeId, data);
     }
 }

common/src/main/java/com/viaversion/viabackwards/protocol/v1_12to1_11_1/rewriter/SoundPacketRewriter1_12.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_12to1_11_1/storage/ParrotStorage.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_12to1_11_1/storage/ShoulderTracker.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_13_1to1_13/Protocol1_13_1To1_13.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -20,7 +20,7 @@ package com.viaversion.viabackwards.protocol.v1_13_1to1_13;
 import com.viaversion.viabackwards.ViaBackwards;
 import com.viaversion.viabackwards.api.BackwardsProtocol;
 import com.viaversion.viabackwards.api.data.BackwardsMappingData;
-import com.viaversion.viabackwards.api.rewriters.TranslatableRewriter;
+import com.viaversion.viabackwards.api.rewriters.text.JsonNBTComponentRewriter;
 import com.viaversion.viabackwards.protocol.v1_13_1to1_13.rewriter.CommandRewriter1_13_1;
 import com.viaversion.viabackwards.protocol.v1_13_1to1_13.rewriter.EntityPacketRewriter1_13_1;
 import com.viaversion.viabackwards.protocol.v1_13_1to1_13.rewriter.ItemPacketRewriter1_13_1;
@@ -40,7 +40,8 @@ import com.viaversion.viaversion.libs.gson.JsonObject;
 import com.viaversion.viaversion.protocols.v1_12_2to1_13.packet.ClientboundPackets1_13;
 import com.viaversion.viaversion.protocols.v1_12_2to1_13.packet.ServerboundPackets1_13;
 import com.viaversion.viaversion.protocols.v1_13to1_13_1.Protocol1_13To1_13_1;
-import com.viaversion.viaversion.rewriter.ComponentRewriter;
+import com.viaversion.viaversion.rewriter.text.ComponentRewriterBase;
+import com.viaversion.viaversion.rewriter.ParticleRewriter;
 import com.viaversion.viaversion.rewriter.StatisticsRewriter;
 import com.viaversion.viaversion.rewriter.TagRewriter;
 import com.viaversion.viaversion.util.ComponentUtil;
@@ -50,7 +51,8 @@ public class Protocol1_13_1To1_13 extends BackwardsProtocol<ClientboundPackets1_
     public static final BackwardsMappingData MAPPINGS = new BackwardsMappingData("1.13.2", "1.13", Protocol1_13To1_13_1.class);
     private final EntityPacketRewriter1_13_1 entityRewriter = new EntityPacketRewriter1_13_1(this);
     private final ItemPacketRewriter1_13_1 itemRewriter = new ItemPacketRewriter1_13_1(this);
-    private final TranslatableRewriter<ClientboundPackets1_13> translatableRewriter = new TranslatableRewriter<>(this, ComponentRewriter.ReadType.JSON);
+    private final ParticleRewriter<ClientboundPackets1_13> particleRewriter = new ParticleRewriter<>(this);
+    private final JsonNBTComponentRewriter<ClientboundPackets1_13> translatableRewriter = new JsonNBTComponentRewriter<>(this, ComponentRewriterBase.ReadType.JSON);
     private final TagRewriter<ClientboundPackets1_13> tagRewriter = new TagRewriter<>(this);
 
     public Protocol1_13_1To1_13() {
@@ -72,6 +74,8 @@ public class Protocol1_13_1To1_13 extends BackwardsProtocol<ClientboundPackets1_
 
         new CommandRewriter1_13_1(this).registerDeclareCommands(ClientboundPackets1_13.COMMANDS);
 
+        particleRewriter.registerLevelParticles1_13(ClientboundPackets1_13.LEVEL_PARTICLES, Types.FLOAT);
+
         registerServerbound(ServerboundPackets1_13.COMMAND_SUGGESTION, new PacketHandlers() {
             @Override
             public void register() {
@@ -203,10 +207,7 @@ public class Protocol1_13_1To1_13 extends BackwardsProtocol<ClientboundPackets1_
     @Override
     public void init(UserConnection user) {
         user.addEntityTracker(getClass(), new EntityTrackerBase(user, EntityTypes1_13.EntityType.PLAYER));
-
-        if (!user.has(ClientWorld.class)) {
-            user.put(new ClientWorld());
-        }
+        user.addClientWorld(getClass(), new ClientWorld());
     }
 
     @Override
@@ -224,7 +225,12 @@ public class Protocol1_13_1To1_13 extends BackwardsProtocol<ClientboundPackets1_
         return itemRewriter;
     }
 
-    public TranslatableRewriter<ClientboundPackets1_13> translatableRewriter() {
+    @Override
+    public ParticleRewriter<ClientboundPackets1_13> getParticleRewriter() {
+        return particleRewriter;
+    }
+
+    public JsonNBTComponentRewriter<ClientboundPackets1_13> translatableRewriter() {
         return translatableRewriter;
     }
 

common/src/main/java/com/viaversion/viabackwards/protocol/v1_13_1to1_13/rewriter/CommandRewriter1_13_1.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_13_1to1_13/rewriter/EntityPacketRewriter1_13_1.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -22,8 +22,8 @@ import com.viaversion.viabackwards.protocol.v1_13_1to1_13.Protocol1_13_1To1_13;
 import com.viaversion.viaversion.api.minecraft.Particle;
 import com.viaversion.viaversion.api.minecraft.entities.EntityType;
 import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_13;
-import com.viaversion.viaversion.api.minecraft.item.Item;
 import com.viaversion.viaversion.api.minecraft.entitydata.EntityData;
+import com.viaversion.viaversion.api.minecraft.item.Item;
 import com.viaversion.viaversion.api.protocol.remapper.PacketHandlers;
 import com.viaversion.viaversion.api.type.Types;
 import com.viaversion.viaversion.api.type.types.version.Types1_13;
@@ -55,15 +55,14 @@ public class EntityPacketRewriter1_13_1 extends LegacyEntityRewriter<Clientbound
                 handler(wrapper -> {
                     int entityId = wrapper.get(Types.VAR_INT, 0);
                     byte type = wrapper.get(Types.BYTE, 0);
-                    EntityTypes1_13.EntityType entType = EntityTypes1_13.getTypeFromId(type, true);
+                    int data = wrapper.get(Types.INT, 0);
+                    EntityTypes1_13.EntityType entType = EntityTypes1_13.ObjectType.getEntityType(type, data);
                     if (entType == null) {
-                        protocol.getLogger().warning("Could not find entity type " + type);
                         return;
                     }
 
                     // Rewrite falling block
                     if (entType.is(EntityTypes1_13.EntityType.FALLING_BLOCK)) {
-                        int data = wrapper.get(Types.INT, 0);
                         wrapper.set(Types.INT, 0, protocol.getMappingData().getNewBlockStateId(data));
                     }
 
@@ -138,7 +137,7 @@ public class EntityPacketRewriter1_13_1 extends LegacyEntityRewriter<Clientbound
                 int value = (int) data.getValue();
                 data.setValue(protocol.getMappingData().getNewBlockStateId(value));
             } else if (data.dataType() == Types1_13.ENTITY_DATA_TYPES.particleType) {
-                rewriteParticle(event.user(), (Particle) data.getValue());
+                protocol.getParticleRewriter().rewriteParticle(event.user(), (Particle) data.getValue());
             } else if (data.dataType() == Types1_13.ENTITY_DATA_TYPES.optionalComponentType || data.dataType() == Types1_13.ENTITY_DATA_TYPES.componentType) {
                 JsonElement element = data.value();
                 protocol.translatableRewriter().processText(event.user(), element);
@@ -160,11 +159,11 @@ public class EntityPacketRewriter1_13_1 extends LegacyEntityRewriter<Clientbound
 
     @Override
     public EntityType typeFromId(int typeId) {
-        return EntityTypes1_13.getTypeFromId(typeId, false);
+        return EntityTypes1_13.EntityType.findById(typeId);
     }
 
     @Override
-    public EntityType objectTypeFromId(int typeId) {
-        return EntityTypes1_13.getTypeFromId(typeId, true);
+    public EntityType objectTypeFromId(int typeId, int data) {
+        return EntityTypes1_13.ObjectType.getEntityType(typeId, data);
     }
 }

common/src/main/java/com/viaversion/viabackwards/protocol/v1_13_1to1_13/rewriter/ItemPacketRewriter1_13_1.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -19,7 +19,6 @@ package com.viaversion.viabackwards.protocol.v1_13_1to1_13.rewriter;
 
 import com.viaversion.viabackwards.protocol.v1_13_1to1_13.Protocol1_13_1To1_13;
 import com.viaversion.viaversion.api.minecraft.item.Item;
-import com.viaversion.viaversion.api.type.Type;
 import com.viaversion.viaversion.api.type.Types;
 import com.viaversion.viaversion.protocols.v1_12_2to1_13.packet.ClientboundPackets1_13;
 import com.viaversion.viaversion.protocols.v1_12_2to1_13.packet.ServerboundPackets1_13;
@@ -68,7 +67,5 @@ public class ItemPacketRewriter1_13_1 extends ItemRewriter<ClientboundPackets1_1
         registerSetEquippedItem(ClientboundPackets1_13.SET_EQUIPPED_ITEM);
         registerContainerClick(ServerboundPackets1_13.CONTAINER_CLICK);
         registerSetCreativeModeSlot(ServerboundPackets1_13.SET_CREATIVE_MODE_SLOT);
-
-        registerLevelParticles(ClientboundPackets1_13.LEVEL_PARTICLES, Types.FLOAT);
     }
 }

common/src/main/java/com/viaversion/viabackwards/protocol/v1_13_1to1_13/rewriter/WorldPacketRewriter1_13_1.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -34,7 +34,7 @@ public class WorldPacketRewriter1_13_1 {
         BlockRewriter<ClientboundPackets1_13> blockRewriter = BlockRewriter.legacy(protocol);
 
         protocol.registerClientbound(ClientboundPackets1_13.LEVEL_CHUNK, wrapper -> {
-            ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
+            ClientWorld clientWorld = wrapper.user().getClientWorld(Protocol1_13_1To1_13.class);
             Chunk chunk = wrapper.passthrough(ChunkType1_13.forEnvironment(clientWorld.getEnvironment()));
 
             blockRewriter.handleChunk(chunk);

common/src/main/java/com/viaversion/viabackwards/protocol/v1_13_2to1_13_1/Protocol1_13_2To1_13_1.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_13_2to1_13_1/rewriter/EntityPacketRewriter1_13_2.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -18,9 +18,12 @@
 package com.viaversion.viabackwards.protocol.v1_13_2to1_13_1.rewriter;
 
 import com.viaversion.viabackwards.protocol.v1_13_2to1_13_1.Protocol1_13_2To1_13_1;
+import com.viaversion.viaversion.api.minecraft.Particle;
 import com.viaversion.viaversion.api.minecraft.entitydata.EntityData;
+import com.viaversion.viaversion.api.minecraft.entitydata.EntityDataType;
+import com.viaversion.viaversion.api.minecraft.item.Item;
+import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
 import com.viaversion.viaversion.api.protocol.remapper.PacketHandlers;
-import com.viaversion.viaversion.api.type.Type;
 import com.viaversion.viaversion.api.type.Types;
 import com.viaversion.viaversion.api.type.types.version.Types1_13;
 import com.viaversion.viaversion.api.type.types.version.Types1_13_2;
@@ -47,11 +50,7 @@ public class EntityPacketRewriter1_13_2 {
                 map(Types.SHORT); // 11 - Velocity Z
                 map(Types1_13_2.ENTITY_DATA_LIST, Types1_13.ENTITY_DATA_LIST); // 12 - Entity data
 
-                handler(wrapper -> {
-                    for (EntityData entityData : wrapper.get(Types1_13.ENTITY_DATA_LIST, 0)) {
-                        entityData.setDataType(Types1_13.ENTITY_DATA_TYPES.byId(entityData.dataType().typeId()));
-                    }
-                });
+                handler(EntityPacketRewriter1_13_2::updateEntityData);
             }
         });
 
@@ -67,11 +66,7 @@ public class EntityPacketRewriter1_13_2 {
                 map(Types.BYTE); // 6 - Pitch
                 map(Types1_13_2.ENTITY_DATA_LIST, Types1_13.ENTITY_DATA_LIST); // 7 - Entity data
 
-                handler(wrapper -> {
-                    for (EntityData entityData : wrapper.get(Types1_13.ENTITY_DATA_LIST, 0)) {
-                        entityData.setDataType(Types1_13.ENTITY_DATA_TYPES.byId(entityData.dataType().typeId()));
-                    }
-                });
+                handler(EntityPacketRewriter1_13_2::updateEntityData);
             }
         });
 
@@ -81,13 +76,23 @@ public class EntityPacketRewriter1_13_2 {
                 map(Types.VAR_INT); // 0 - Entity ID
                 map(Types1_13_2.ENTITY_DATA_LIST, Types1_13.ENTITY_DATA_LIST); // 1 - Entity data list
 
-                handler(wrapper -> {
-                    for (EntityData entityData : wrapper.get(Types1_13.ENTITY_DATA_LIST, 0)) {
-                        entityData.setDataType(Types1_13.ENTITY_DATA_TYPES.byId(entityData.dataType().typeId()));
-                    }
-                });
+                handler(EntityPacketRewriter1_13_2::updateEntityData);
             }
         });
     }
 
+    private static void updateEntityData(final PacketWrapper wrapper) {
+        for (final EntityData data : wrapper.get(Types1_13.ENTITY_DATA_LIST, 0)) {
+            final EntityDataType dataType = Types1_13.ENTITY_DATA_TYPES.byId(data.dataType().typeId());
+            data.setDataType(dataType);
+
+            if (dataType == Types1_13.ENTITY_DATA_TYPES.particleType) {
+                final Particle particle = data.value();
+                if (particle.id() == 27) {
+                    final Item item = particle.<Item>getArgument(0).getValue();
+                    particle.set(0, Types.ITEM1_13, item);
+                }
+            }
+        }
+    }
 }

common/src/main/java/com/viaversion/viabackwards/protocol/v1_13_2to1_13_1/rewriter/ItemPacketRewriter1_13_2.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -30,7 +30,7 @@ public class ItemPacketRewriter1_13_2 {
         protocol.registerClientbound(ClientboundPackets1_13.CONTAINER_SET_SLOT, new PacketHandlers() {
             @Override
             public void register() {
-                map(Types.UNSIGNED_BYTE); // 0 - Window ID
+                map(Types.BYTE); // 0 - Window ID
                 map(Types.SHORT); // 1 - Slot ID
                 map(Types.ITEM1_13_2, Types.ITEM1_13); // 2 - Slot Value
             }
@@ -117,7 +117,7 @@ public class ItemPacketRewriter1_13_2 {
         protocol.registerServerbound(ServerboundPackets1_13.CONTAINER_CLICK, new PacketHandlers() {
             @Override
             public void register() {
-                map(Types.UNSIGNED_BYTE); // 0 - Window ID
+                map(Types.BYTE); // 0 - Window ID
                 map(Types.SHORT); // 1 - Slot
                 map(Types.BYTE); // 2 - Button
                 map(Types.SHORT); // 3 - Action number

common/src/main/java/com/viaversion/viabackwards/protocol/v1_13_2to1_13_1/rewriter/WorldPacketRewriter1_13_2.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_13to1_12_2/Protocol1_13To1_12_2.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -20,7 +20,7 @@ package com.viaversion.viabackwards.protocol.v1_13to1_12_2;
 
 import com.viaversion.viabackwards.ViaBackwards;
 import com.viaversion.viabackwards.api.BackwardsProtocol;
-import com.viaversion.viabackwards.api.rewriters.TranslatableRewriter;
+import com.viaversion.viabackwards.api.rewriters.text.JsonNBTComponentRewriter;
 import com.viaversion.viabackwards.protocol.v1_13to1_12_2.data.BackwardsMappingData1_13;
 import com.viaversion.viabackwards.protocol.v1_13to1_12_2.data.PaintingNames1_13;
 import com.viaversion.viabackwards.protocol.v1_13to1_12_2.provider.BackwardsBlockEntityProvider;
@@ -45,7 +45,7 @@ import com.viaversion.viaversion.protocols.v1_12_2to1_13.packet.ServerboundPacke
 import com.viaversion.viaversion.protocols.v1_12to1_12_1.packet.ClientboundPackets1_12_1;
 import com.viaversion.viaversion.protocols.v1_12to1_12_1.packet.ServerboundPackets1_12_1;
 import com.viaversion.viaversion.protocols.v1_12_2to1_13.Protocol1_12_2To1_13;
-import com.viaversion.viaversion.rewriter.ComponentRewriter;
+import com.viaversion.viaversion.rewriter.text.ComponentRewriterBase;
 import com.viaversion.viaversion.util.ComponentUtil;
 import com.viaversion.viaversion.util.ProtocolLogger;
 import org.checkerframework.checker.nullness.qual.Nullable;
@@ -56,7 +56,7 @@ public class Protocol1_13To1_12_2 extends BackwardsProtocol<ClientboundPackets1_
     public static final ProtocolLogger LOGGER = new ProtocolLogger(Protocol1_13To1_12_2.class);
     private final EntityPacketRewriter1_13 entityRewriter = new EntityPacketRewriter1_13(this);
     private final BlockItemPacketRewriter1_13 blockItemPackets = new BlockItemPacketRewriter1_13(this);
-    private final TranslatableRewriter<ClientboundPackets1_13> translatableRewriter = new TranslatableRewriter<>(this, ComponentRewriter.ReadType.JSON) {
+    private final JsonNBTComponentRewriter<ClientboundPackets1_13> translatableRewriter = new JsonNBTComponentRewriter<>(this, ComponentRewriterBase.ReadType.JSON) {
         @Override
         protected void handleTranslate(JsonObject root, String translate) {
             String mappedKey = mappedTranslationKey(translate);
@@ -65,7 +65,7 @@ public class Protocol1_13To1_12_2 extends BackwardsProtocol<ClientboundPackets1_
             }
         }
     };
-    private final TranslatableRewriter<ClientboundPackets1_13> translatableToLegacyRewriter = new TranslatableRewriter<>(this, ComponentRewriter.ReadType.JSON) {
+    private final JsonNBTComponentRewriter<ClientboundPackets1_13> translatableToLegacyRewriter = new JsonNBTComponentRewriter<>(this, ComponentRewriterBase.ReadType.JSON) {
         @Override
         protected void handleTranslate(JsonObject root, String translate) {
             String mappedKey = mappedTranslationKey(translate);
@@ -114,11 +114,8 @@ public class Protocol1_13To1_12_2 extends BackwardsProtocol<ClientboundPackets1_
 
     @Override
     public void init(UserConnection user) {
-        if (!user.has(ClientWorld.class)) {
-            user.put(new ClientWorld());
-        }
-
         user.addEntityTracker(this.getClass(), new EntityTrackerBase(user, EntityTypes1_13.EntityType.PLAYER));
+        user.addClientWorld(this.getClass(), new ClientWorld());
 
         user.put(new BackwardsBlockStorage());
         user.put(new TabCompleteStorage());
@@ -151,7 +148,7 @@ public class Protocol1_13To1_12_2 extends BackwardsProtocol<ClientboundPackets1_
     }
 
     // Don't override the parent method
-    public TranslatableRewriter<ClientboundPackets1_13> translatableRewriter() {
+    public JsonNBTComponentRewriter<ClientboundPackets1_13> translatableRewriter() {
         return translatableRewriter;
     }
 

common/src/main/java/com/viaversion/viabackwards/protocol/v1_13to1_12_2/block_entity_handlers/BannerHandler.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_13to1_12_2/block_entity_handlers/BedHandler.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_13to1_12_2/block_entity_handlers/FlowerPotHandler.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_13to1_12_2/block_entity_handlers/PistonHandler.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_13to1_12_2/block_entity_handlers/SkullHandler.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

common/src/main/java/com/viaversion/viabackwards/protocol/v1_13to1_12_2/block_entity_handlers/SpawnerHandler.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
- * Copyright (C) 2016-2024 ViaVersion and contributors
+ * Copyright (C) 2016-2025 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by