5.6.0 Release

Signed-off-by: gradle-update-robot <gradle-update-robot@regolo.cc>
Co-authored-by: gradle-update-robot <gradle-update-robot@regolo.cc>

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -48,21 +48,12 @@ body:
       label: Steps to Reproduce
       description: |
         List the steps on how we can reproduce the issue. Make sure we can easily understand what you mean with each step.
+        **Please always include the client version(s) with which the issue happens. Ideally also try to find out from what specific version downward/in what version range the issue happens.**
       placeholder: |
         Example:
         1. Login with a 1.16.5 client
         2. Place a sign
-        3. The sign text is displayed wrong
-    validations:
-      required: true
-
-  - type: textarea
-    attributes:
-      label: Expected Behavior
-      description: |
-        Describe what exactly you expected to happen.
-      placeholder: |
-        Example: "Placed sign text should not disappear."
+        3. The sign text disappears
     validations:
       required: true
 

.github/dependabot.yml

@@ -1,6 +1,8 @@
 version: 2
 updates:
   - package-ecosystem: "github-actions"
+    cooldown:
+      default-days: 7
     directory: "/"
     schedule:
-      interval: "weekly"
+      interval: "monthly"

.github/workflows/build.yml

@@ -1,22 +1,22 @@
-name: Java CI with Gradle
-
-on: [push, pull_request]
+name: Build
+on: [pull_request, push, workflow_dispatch]
+permissions:
+  contents: read
 
 jobs:
   build:
+    # Only run on PRs if the source branch is on a different repo. We do not need to run everything twice.
     if: ${{ github.event_name != 'pull_request' || github.repository != github.event.pull_request.head.repo.full_name }}
-
     runs-on: ubuntu-24.04
-
     steps:
     - name: Checkout Repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # 6.0.0
       with:
         persist-credentials: false
     - name: Set up Gradle
-      uses: gradle/actions/setup-gradle@v4
+      uses: gradle/actions/setup-gradle@4d9f0ba0025fe599b4ebab900eb7f3a1d93ef4c2 # 5.0.0
     - name: Set up JDK 17
-      uses: actions/setup-java@v5
+      uses: actions/setup-java@dded0888837ed1f317902acf8a20df0ad188d165 # 5.0.0
       with:
         distribution: 'temurin'
         java-version: 17

.github/workflows/publish.yml

@@ -6,25 +6,28 @@ on:
       - dev
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   publish:
     if: github.repository_owner == 'ViaVersion'
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # 6.0.0
         with:
           persist-credentials: false
       - name: Set up Gradle
-        uses: gradle/actions/setup-gradle@v4
+        uses: gradle/actions/setup-gradle@4d9f0ba0025fe599b4ebab900eb7f3a1d93ef4c2 # 5.0.0
       - name: Set up JDK 17
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@dded0888837ed1f317902acf8a20df0ad188d165 # 5.0.0
         with:
           distribution: 'temurin'
           java-version: 17
           check-latest: true
-      - name: Build
-        run: ./gradlew build
+      - name: Build with Gradle
+        run: ./gradlew build --refresh-dependencies
       - name: Publish to Hangar
         env:
           HANGAR_TOKEN: ${{ secrets.HANGAR_TOKEN }}

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

@@ -4,13 +4,18 @@ on:
   schedule:
     - cron: "0 0 * * 0"
 
+permissions:
+  contents: write
+  pull-requests: write
+
 jobs:
   update-gradle-wrapper:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # 6.0.0
         with:
+          fetch-depth: 0
           persist-credentials: false
       - name: Update Gradle Wrapper
-        uses: gradle-update/update-gradle-wrapper-action@v2
+        uses: gradle-update/update-gradle-wrapper-action@512b1875f3b6270828abfe77b247d5895a2da1e5 # 2.1.0

README.md

@@ -12,7 +12,7 @@ Supported Versions
 -
 As a plugin, ViaBackwards runs on servers on releases 1.10-latest. You can also use ViaBackwards in ViaFabric or ViaFabricPlus.
 - in **ViaFabric**, put ViaBackwards into the `mods` folder
-- in **ViaFabricPlus**, put ViaBackwards into the `ViaFabricPlus/jars` folder
+- in **ViaFabricPlus**, put ViaBackwards into the `config/viafabriclus/jars` folder
 
 See [HERE](https://viaversion.com) for an overview of the different Via* projects.
 

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

@@ -44,6 +44,7 @@ public class ViaBackwardsConfig extends Config implements com.viaversion.viaback
     private boolean mapCustomModelData;
     private boolean mapDisplayEntities;
     private boolean suppressEmulationWarnings;
+    private boolean dialogsViaChests;
     private DialogStyleConfig dialogStyleConfig;
 
     public ViaBackwardsConfig(File configFile, Logger logger) {
@@ -70,6 +71,7 @@ public class ViaBackwardsConfig extends Config implements com.viaversion.viaback
         mapCustomModelData = getBoolean("map-custom-model-data", true);
         mapDisplayEntities = getBoolean("map-display-entities", true);
         suppressEmulationWarnings = getBoolean("suppress-emulation-warnings", false);
+        dialogsViaChests = getBoolean("dialogs-via-chests", true);
         dialogStyleConfig = loadDialogStyleConfig(getSection("dialog-style"));
     }
 
@@ -160,6 +162,11 @@ public class ViaBackwardsConfig extends Config implements com.viaversion.viaback
         return suppressEmulationWarnings;
     }
 
+    @Override
+    public boolean dialogsViaChests() {
+        return dialogsViaChests;
+    }
+
     @Override
     public DialogStyleConfig dialogStyleConfig() {
         return dialogStyleConfig;

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

@@ -113,6 +113,13 @@ public interface ViaBackwardsConfig extends Config {
      */
     boolean suppressEmulationWarnings();
 
+    /**
+     * If enabled, dialogs will be shown via chest inventories for 1.21.5 clients on 1.21.6+ servers.
+     *
+     * @return true if enabled
+     */
+    boolean dialogsViaChests();
+
     /**
      * Returns the dialog style configuration.
      *

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

@@ -55,6 +55,7 @@ import com.viaversion.viabackwards.protocol.v1_20_2to1_20.Protocol1_20_2To1_20;
 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_20to1_19_4.Protocol1_20To1_19_4;
+import com.viaversion.viabackwards.protocol.v1_21_11to1_21_9.Protocol1_21_11To1_21_9;
 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_4to1_21_2.Protocol1_21_4To1_21_2;
@@ -77,7 +78,7 @@ import java.util.logging.Logger;
 
 public interface ViaBackwardsPlatform {
 
-    String MINIMUM_VV_VERSION = "5.5.0";
+    String MINIMUM_VV_VERSION = "5.6.0";
 
     /**
      * Initialize ViaBackwards.
@@ -156,6 +157,7 @@ public interface ViaBackwardsPlatform {
         protocolManager.registerProtocol(new Protocol1_21_6To1_21_5(), ProtocolVersion.v1_21_5, ProtocolVersion.v1_21_6);
         protocolManager.registerProtocol(new Protocol1_21_7To1_21_6(), ProtocolVersion.v1_21_6, ProtocolVersion.v1_21_7);
         protocolManager.registerProtocol(new Protocol1_21_9To1_21_7(), ProtocolVersion.v1_21_7, ProtocolVersion.v1_21_9);
+        protocolManager.registerProtocol(new Protocol1_21_11To1_21_9(), ProtocolVersion.v1_21_9, ProtocolVersion.v1_21_11);
     }
 
     default void enable() {

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

@@ -34,7 +34,6 @@ import com.viaversion.viaversion.api.protocol.Protocol;
 import com.viaversion.viaversion.libs.fastutil.ints.Int2ObjectArrayMap;
 import com.viaversion.viaversion.libs.fastutil.ints.Int2ObjectMap;
 import com.viaversion.viaversion.libs.fastutil.ints.Int2ObjectOpenHashMap;
-import com.viaversion.viaversion.util.Key;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.logging.Level;
@@ -45,7 +44,6 @@ public class BackwardsMappingData extends MappingDataBase {
 
     private final Class<? extends Protocol<?, ?, ?, ?>> vvProtocolClass;
     protected Int2ObjectMap<MappedItem> backwardsItemMappings;
-    private Map<String, String> backwardsSoundMappings;
     private Map<String, String> entityNames;
     private Int2ObjectMap<String> enchantmentNames;
 
@@ -83,7 +81,6 @@ public class BackwardsMappingData extends MappingDataBase {
 
         this.entityNames = loadNameByStringMappings(data, "entitynames");
         this.enchantmentNames = loadNameByIdMappings(data, "enchantmentnames");
-        this.backwardsSoundMappings = loadNameByStringMappings(data, "soundnames");
     }
 
     private @Nullable Map<String, String> loadNameByStringMappings(final CompoundTag data, final String key) {
@@ -161,10 +158,7 @@ public class BackwardsMappingData extends MappingDataBase {
     }
 
     public @Nullable String getMappedNamedSound(final String id) {
-        if (backwardsSoundMappings == null) {
-            return null;
-        }
-        return backwardsSoundMappings.get(Key.stripMinecraftNamespace(id));
+        return getFullSoundMappings().mappedIdentifier(id);
     }
 
     public @Nullable String mappedEntityName(final String entityName) {
@@ -187,10 +181,6 @@ public class BackwardsMappingData extends MappingDataBase {
         return backwardsItemMappings;
     }
 
-    public @Nullable Map<String, String> getBackwardsSoundMappings() {
-        return backwardsSoundMappings;
-    }
-
     public @Nullable Class<? extends Protocol<?, ?, ?, ?>> getViaVersionProtocolClass() {
         return vvProtocolClass;
     }

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

@@ -300,7 +300,11 @@ public class BackwardsStructuredItemRewriter<C extends ClientboundPacketType, S
     }
 
     protected Holder<SoundEvent> restoreSoundEventHolder(final CompoundTag tag) {
-        return restoreHolder(tag, "sound_event", soundEventTag -> {
+        return restoreSoundEventHolder(tag, "sound_event");
+    }
+
+    protected Holder<SoundEvent> restoreSoundEventHolder(final CompoundTag tag, final String key) {
+        return restoreHolder(tag, key, soundEventTag -> {
             final String identifier = soundEventTag.getString("identifier");
             final FloatTag fixedRange = soundEventTag.getFloatTag("fixed_range");
             return new SoundEvent(identifier, fixedRange != null ? fixedRange.asFloat() : null);

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

@@ -17,16 +17,13 @@
  */
 package com.viaversion.viabackwards.protocol.template;
 
-import com.viaversion.viabackwards.api.rewriters.BackwardsRegistryRewriter;
 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.minecraft.entitydata.types.EntityDataTypes1_21_2;
 import com.viaversion.viaversion.api.type.types.version.VersionedTypes;
-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
 //  VersionedTypes
@@ -45,9 +42,6 @@ final class EntityPacketRewriter1_99 extends EntityRewriter<ClientboundPacket1_2
         registerGameEvent(ClientboundPackets1_21_2.GAME_EVENT);
         registerLogin1_20_5(ClientboundPackets1_21_2.LOGIN);
         registerRespawn1_20_5(ClientboundPackets1_21_2.RESPAWN);
-
-        final RegistryDataRewriter registryDataRewriter = new BackwardsRegistryRewriter(protocol);
-        protocol.registerClientbound(ClientboundConfigurationPackets1_21.REGISTRY_DATA, registryDataRewriter::handle);
     }
 
     @Override

common/src/main/java/com/viaversion/viabackwards/protocol/template/Protocol1_99To1_98.java

@@ -19,6 +19,7 @@ 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.BackwardsRegistryRewriter;
 import com.viaversion.viabackwards.api.rewriters.SoundRewriter;
 import com.viaversion.viabackwards.api.rewriters.text.NBTComponentRewriter;
 import com.viaversion.viaversion.api.connection.UserConnection;
@@ -37,9 +38,9 @@ import com.viaversion.viaversion.protocols.v1_21_2to1_21_4.packet.ServerboundPac
 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.RegistryDataRewriter;
 import com.viaversion.viaversion.rewriter.StatisticsRewriter;
 import com.viaversion.viaversion.rewriter.TagRewriter;
-import com.viaversion.viaversion.util.SerializerVersion;
 
 import static com.viaversion.viaversion.util.ProtocolUtil.packetTypeMap;
 
@@ -62,6 +63,7 @@ final class Protocol1_99To1_98 extends BackwardsProtocol<ClientboundPacket1_21_2
     private final ParticleRewriter<ClientboundPacket1_21_2> particleRewriter = new ParticleRewriter<>(this);
     private final NBTComponentRewriter<ClientboundPacket1_21_2> translatableRewriter = new ComponentRewriter1_99(this);
     private final TagRewriter<ClientboundPacket1_21_2> tagRewriter = new TagRewriter<>(this);
+    private final RegistryDataRewriter registryDataRewriter = new BackwardsRegistryRewriter(this);
 
     public Protocol1_99To1_98() {
         super(ClientboundPacket1_21_2.class, ClientboundPacket1_21_2.class, ServerboundPacket1_21_4.class, ServerboundPacket1_21_4.class);
@@ -71,6 +73,8 @@ final class Protocol1_99To1_98 extends BackwardsProtocol<ClientboundPacket1_21_2
     protected void registerPackets() {
         super.registerPackets();
 
+        registerClientbound(ClientboundConfigurationPackets1_21.REGISTRY_DATA, registryDataRewriter::handle);
+
         tagRewriter.registerGeneric(ClientboundPackets1_21_2.UPDATE_TAGS);
         tagRewriter.registerGeneric(ClientboundConfigurationPackets1_21.UPDATE_TAGS);
 
@@ -90,6 +94,7 @@ final class Protocol1_99To1_98 extends BackwardsProtocol<ClientboundPacket1_21_2
         translatableRewriter.registerBossEvent(ClientboundPackets1_21_2.BOSS_EVENT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_21_2.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_21_2.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_21_5(ClientboundPackets1_21_2.SET_PLAYER_TEAM);
         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);
@@ -123,6 +128,11 @@ final class Protocol1_99To1_98 extends BackwardsProtocol<ClientboundPacket1_21_2
         return itemRewriter;
     }
 
+    @Override
+    public RegistryDataRewriter getRegistryDataRewriter() {
+        return registryDataRewriter;
+    }
+
     @Override
     public ParticleRewriter<ClientboundPacket1_21_2> getParticleRewriter() {
         return particleRewriter;

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

@@ -114,7 +114,7 @@ public class BlockItemPacketRewriter1_12 extends LegacyBlockItemRewriter<Clientb
                         PacketWrapper confirm = wrapper.create(ServerboundPackets1_12.CONTAINER_ACK);
                         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
+                        confirm.write(Types.BOOLEAN, true); // Success - not used
 
                         wrapper.sendToServer(Protocol1_12To1_11_1.class);
                         wrapper.cancel();

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

@@ -69,6 +69,7 @@ public class Protocol1_13_1To1_13 extends BackwardsProtocol<ClientboundPackets1_
         translatableRewriter.registerPlayerCombat(ClientboundPackets1_13.PLAYER_COMBAT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_13.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_13.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_13(ClientboundPackets1_13.SET_PLAYER_TEAM);
         translatableRewriter.registerTitle(ClientboundPackets1_13.SET_TITLES);
         translatableRewriter.registerPing();
 

common/src/main/java/com/viaversion/viabackwards/protocol/v1_14to1_13_2/Protocol1_14To1_13_2.java

@@ -62,6 +62,7 @@ public class Protocol1_14To1_13_2 extends BackwardsProtocol<ClientboundPackets1_
         translatableRewriter.registerPlayerCombat(ClientboundPackets1_14.PLAYER_COMBAT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_14.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_14.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_13(ClientboundPackets1_14.SET_PLAYER_TEAM);
         translatableRewriter.registerTitle(ClientboundPackets1_14.SET_TITLES);
         translatableRewriter.registerPing();
 

common/src/main/java/com/viaversion/viabackwards/protocol/v1_15to1_14_4/Protocol1_15To1_14_4.java

@@ -64,6 +64,7 @@ public class Protocol1_15To1_14_4 extends BackwardsProtocol<ClientboundPackets1_
         translatableRewriter.registerComponentPacket(ClientboundPackets1_15.DISCONNECT);
         translatableRewriter.registerOpenScreen1_14(ClientboundPackets1_15.OPEN_SCREEN);
         translatableRewriter.registerTabList(ClientboundPackets1_15.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_13(ClientboundPackets1_15.SET_PLAYER_TEAM);
         translatableRewriter.registerTitle(ClientboundPackets1_15.SET_TITLES);
         translatableRewriter.registerPing();
 

common/src/main/java/com/viaversion/viabackwards/protocol/v1_16_2to1_16_1/Protocol1_16_2To1_16_1.java

@@ -67,6 +67,7 @@ public class Protocol1_16_2To1_16_1 extends BackwardsProtocol<ClientboundPackets
         translatableRewriter.registerComponentPacket(ClientboundPackets1_16_2.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_16_2.TAB_LIST);
         translatableRewriter.registerTitle(ClientboundPackets1_16_2.SET_TITLES);
+        translatableRewriter.registerSetPlayerTeam1_13(ClientboundPackets1_16_2.SET_PLAYER_TEAM);
         translatableRewriter.registerOpenScreen1_14(ClientboundPackets1_16_2.OPEN_SCREEN);
         translatableRewriter.registerPing();
 

common/src/main/java/com/viaversion/viabackwards/protocol/v1_16to1_15_2/Protocol1_16To1_15_2.java

@@ -70,6 +70,7 @@ public class Protocol1_16To1_15_2 extends BackwardsProtocol<ClientboundPackets1_
         translatableRewriter.registerPlayerCombat(ClientboundPackets1_16.PLAYER_COMBAT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_16.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_16.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_13(ClientboundPackets1_16.SET_PLAYER_TEAM);
         translatableRewriter.registerTitle(ClientboundPackets1_16.SET_TITLES);
         translatableRewriter.registerPing();
 

common/src/main/java/com/viaversion/viabackwards/protocol/v1_17to1_16_4/Protocol1_17To1_16_4.java

@@ -74,6 +74,7 @@ public final class Protocol1_17To1_16_4 extends BackwardsProtocol<ClientboundPac
         translatableRewriter.registerBossEvent(ClientboundPackets1_17.BOSS_EVENT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_17.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_17.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_13(ClientboundPackets1_17.SET_PLAYER_TEAM);
         translatableRewriter.registerOpenScreen1_14(ClientboundPackets1_17.OPEN_SCREEN);
         translatableRewriter.registerPing();
 
@@ -102,7 +103,7 @@ public final class Protocol1_17To1_16_4 extends BackwardsProtocol<ClientboundPac
 
             // Put them into the hardcoded order of Vanilla tags (and only those), rewrite ids
             for (RegistryType type : TAG_REGISTRY_TYPES) {
-                List<TagData> tagList = tags.get(type.resourceLocation());
+                List<TagData> tagList = tags.get(type.identifier());
                 if (tagList == null) {
                     // Higher versions may not send the otherwise expected tags
                     wrapper.write(Types.VAR_INT, 0);

common/src/main/java/com/viaversion/viabackwards/protocol/v1_19_1to1_19/Protocol1_19_1To1_19.java

@@ -82,6 +82,7 @@ public final class Protocol1_19_1To1_19 extends BackwardsProtocol<ClientboundPac
         translatableRewriter.registerBossEvent(ClientboundPackets1_19_1.BOSS_EVENT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_19_1.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_19_1.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_13(ClientboundPackets1_19_1.SET_PLAYER_TEAM);
         translatableRewriter.registerOpenScreen1_14(ClientboundPackets1_19_1.OPEN_SCREEN);
         translatableRewriter.registerPlayerCombatKill(ClientboundPackets1_19_1.PLAYER_COMBAT_KILL);
         translatableRewriter.registerPing();

common/src/main/java/com/viaversion/viabackwards/protocol/v1_19_3to1_19_1/Protocol1_19_3To1_19_1.java

@@ -19,10 +19,10 @@ package com.viaversion.viabackwards.protocol.v1_19_3to1_19_1;
 
 import com.google.common.base.Preconditions;
 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.text.JsonNBTComponentRewriter;
 import com.viaversion.viabackwards.protocol.v1_19_1to1_19.Protocol1_19_1To1_19;
-import com.viaversion.viabackwards.protocol.v1_19_3to1_19_1.data.BackwardsMappingData1_19_3;
 import com.viaversion.viabackwards.protocol.v1_19_3to1_19_1.rewriter.BlockItemPacketRewriter1_19_3;
 import com.viaversion.viabackwards.protocol.v1_19_3to1_19_1.rewriter.EntityPacketRewriter1_19_3;
 import com.viaversion.viabackwards.protocol.v1_19_3to1_19_1.storage.ChatSessionStorage;
@@ -49,6 +49,7 @@ import com.viaversion.viaversion.data.entity.EntityTrackerBase;
 import com.viaversion.viaversion.libs.gson.JsonElement;
 import com.viaversion.viaversion.protocols.base.ClientboundLoginPackets;
 import com.viaversion.viaversion.protocols.base.ServerboundLoginPackets;
+import com.viaversion.viaversion.protocols.v1_19_1to1_19_3.Protocol1_19_1To1_19_3;
 import com.viaversion.viaversion.protocols.v1_19_1to1_19_3.packet.ClientboundPackets1_19_3;
 import com.viaversion.viaversion.protocols.v1_19_1to1_19_3.packet.ServerboundPackets1_19_3;
 import com.viaversion.viaversion.protocols.v1_19to1_19_1.packet.ClientboundPackets1_19_1;
@@ -68,7 +69,7 @@ import org.checkerframework.checker.nullness.qual.Nullable;
 
 public final class Protocol1_19_3To1_19_1 extends BackwardsProtocol<ClientboundPackets1_19_3, ClientboundPackets1_19_1, ServerboundPackets1_19_3, ServerboundPackets1_19_1> {
 
-    public static final BackwardsMappingData1_19_3 MAPPINGS = new BackwardsMappingData1_19_3();
+    public static final BackwardsMappingData MAPPINGS = new BackwardsMappingData("1.19.3", "1.19", Protocol1_19_1To1_19_3.class);
     public static final ByteArrayType.OptionalByteArrayType OPTIONAL_SIGNATURE_BYTES_TYPE = new ByteArrayType.OptionalByteArrayType(256);
     public static final ByteArrayType SIGNATURE_BYTES_TYPE = new ByteArrayType(256);
     private final EntityPacketRewriter1_19_3 entityRewriter = new EntityPacketRewriter1_19_3(this);
@@ -92,6 +93,7 @@ public final class Protocol1_19_3To1_19_1 extends BackwardsProtocol<ClientboundP
         translatableRewriter.registerBossEvent(ClientboundPackets1_19_3.BOSS_EVENT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_19_3.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_19_3.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_13(ClientboundPackets1_19_3.SET_PLAYER_TEAM);
         translatableRewriter.registerOpenScreen1_14(ClientboundPackets1_19_3.OPEN_SCREEN);
         translatableRewriter.registerPlayerCombatKill(ClientboundPackets1_19_3.PLAYER_COMBAT_KILL);
         translatableRewriter.registerPing();
@@ -113,7 +115,7 @@ public final class Protocol1_19_3To1_19_1 extends BackwardsProtocol<ClientboundP
                 return;
             }
 
-            final int mappedId = MAPPINGS.mappedSound(mappedIdentifier);
+            final int mappedId = MAPPINGS.getFullSoundMappings().mappedId(mappedIdentifier);
             if (mappedId == -1) {
                 wrapper.cancel();
                 return;
@@ -401,7 +403,7 @@ public final class Protocol1_19_3To1_19_1 extends BackwardsProtocol<ClientboundP
     }
 
     @Override
-    public BackwardsMappingData1_19_3 getMappingData() {
+    public BackwardsMappingData getMappingData() {
         return MAPPINGS;
     }
 

common/src/main/java/com/viaversion/viabackwards/protocol/v1_19_3to1_19_1/data/BackwardsMappingData1_19_3.java

@@ -1,53 +0,0 @@
-/*
- * 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.v1_19_3to1_19_1.data;
-
-import com.viaversion.nbt.tag.CompoundTag;
-import com.viaversion.viabackwards.api.data.BackwardsMappingData;
-import com.viaversion.viabackwards.api.data.BackwardsMappingDataLoader;
-import com.viaversion.viaversion.libs.fastutil.objects.Object2IntMap;
-import com.viaversion.viaversion.libs.fastutil.objects.Object2IntOpenHashMap;
-import com.viaversion.viaversion.libs.gson.JsonArray;
-import com.viaversion.viaversion.libs.gson.JsonElement;
-import com.viaversion.viaversion.protocols.v1_19_1to1_19_3.Protocol1_19_1To1_19_3;
-import com.viaversion.viaversion.util.Key;
-
-public final class BackwardsMappingData1_19_3 extends BackwardsMappingData {
-
-    private final Object2IntMap<String> mappedSounds = new Object2IntOpenHashMap<>();
-
-    public BackwardsMappingData1_19_3() {
-        super("1.19.3", "1.19", Protocol1_19_1To1_19_3.class);
-        mappedSounds.defaultReturnValue(-1);
-    }
-
-    @Override
-    protected void loadExtras(final CompoundTag data) {
-        super.loadExtras(data);
-
-        final JsonArray sounds = BackwardsMappingDataLoader.INSTANCE.loadData("sounds-1.19.json").getAsJsonArray("sounds");
-        int i = 0;
-        for (final JsonElement sound : sounds) {
-            mappedSounds.put(sound.getAsString(), i++);
-        }
-    }
-
-    public int mappedSound(final String sound) {
-        return mappedSounds.getInt(Key.stripMinecraftNamespace(sound));
-    }
-}

common/src/main/java/com/viaversion/viabackwards/protocol/v1_19_4to1_19_3/Protocol1_19_4To1_19_3.java

@@ -71,6 +71,7 @@ public final class Protocol1_19_4To1_19_3 extends BackwardsProtocol<ClientboundP
         translatableRewriter.registerComponentPacket(ClientboundPackets1_19_4.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_19_4.TAB_LIST);
         translatableRewriter.registerPlayerCombatKill(ClientboundPackets1_19_4.PLAYER_COMBAT_KILL);
+        translatableRewriter.registerSetPlayerTeam1_13(ClientboundPackets1_19_4.SET_PLAYER_TEAM);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_19_4.SYSTEM_CHAT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_19_4.DISGUISED_CHAT);
         translatableRewriter.registerPing();

common/src/main/java/com/viaversion/viabackwards/protocol/v1_19_4to1_19_3/rewriter/EntityPacketRewriter1_19_4.java

@@ -45,6 +45,8 @@ import com.viaversion.viaversion.util.TagUtil;
 
 public final class EntityPacketRewriter1_19_4 extends EntityRewriter<ClientboundPackets1_19_4, Protocol1_19_4To1_19_3> {
 
+    private static final double TEXT_DISPLAY_Y_OFFSET = -0.25; // Move emulated armor stands down to match text display height offsets
+
     public EntityPacketRewriter1_19_4(final Protocol1_19_4To1_19_3 protocol) {
         super(protocol, Types1_19_3.ENTITY_DATA_TYPES.optionalComponentType, Types1_19_3.ENTITY_DATA_TYPES.booleanType);
     }
@@ -78,6 +80,11 @@ public final class EntityPacketRewriter1_19_4 extends EntityRewriter<Clientbound
                         }
                     }
 
+                    final double y = wrapper.get(Types.DOUBLE, 1);
+                    if (entityType == EntityTypes1_19_4.TEXT_DISPLAY.getId()) {
+                        wrapper.set(Types.DOUBLE, 1, y + TEXT_DISPLAY_Y_OFFSET);
+                    }
+
                     // First track (and remap) entity, then put storage for block display entity
                     getSpawnTrackerWithDataHandler1_19(EntityTypes1_19_4.FALLING_BLOCK).handle(wrapper);
                     if (entityType != EntityTypes1_19_4.BLOCK_DISPLAY.getId()) {
@@ -88,7 +95,6 @@ public final class EntityPacketRewriter1_19_4 extends EntityRewriter<Clientbound
                     if (data != null) {
                         final LinkedEntityStorage storage = new LinkedEntityStorage();
                         final double x = wrapper.get(Types.DOUBLE, 0);
-                        final double y = wrapper.get(Types.DOUBLE, 1);
                         final double z = wrapper.get(Types.DOUBLE, 2);
                         storage.setPosition(x, y, z);
                         data.put(storage);
@@ -183,7 +189,7 @@ public final class EntityPacketRewriter1_19_4 extends EntityRewriter<Clientbound
             wrapper.passthrough(Types.VAR_INT); // Effect id
             wrapper.passthrough(Types.BYTE); // Amplifier
 
-            // Handle inifinite duration. Use a value the client still accepts without bugging out the display while still being practically infinite
+            // Handle infinite duration. Use a value the client still accepts without bugging out the display while still being practically infinite
             final int duration = wrapper.read(Types.VAR_INT);
             wrapper.write(Types.VAR_INT, duration == -1 ? 999999 : duration);
         });
@@ -198,11 +204,14 @@ public final class EntityPacketRewriter1_19_4 extends EntityRewriter<Clientbound
             final double z = wrapper.passthrough(Types.DOUBLE);
 
             final EntityTracker1_19_4 tracker = tracker(wrapper.user());
-            final LinkedEntityStorage storage = tracker.linkedEntityStorage(entityId);
-            if (storage == null) {
-                return;
+            if (tracker.entityType(entityId) == EntityTypes1_19_4.TEXT_DISPLAY) {
+                wrapper.set(Types.DOUBLE, 1, y + TEXT_DISPLAY_Y_OFFSET);
+            }
+
+            final LinkedEntityStorage storage = tracker.linkedEntityStorage(entityId);
+            if (storage != null) {
+                storage.setPosition(x, y, z);
             }
-            storage.setPosition(x, y, z);
         });
 
         final PacketHandler entityPositionHandler = wrapper -> {
@@ -213,10 +222,9 @@ public final class EntityPacketRewriter1_19_4 extends EntityRewriter<Clientbound
 
             final EntityTracker1_19_4 tracker = tracker(wrapper.user());
             final LinkedEntityStorage storage = tracker.linkedEntityStorage(entityId);
-            if (storage == null) {
-                return;
+            if (storage != null) {
+                storage.addRelativePosition(x, y, z);
             }
-            storage.addRelativePosition(x, y, z);
         };
 
         protocol.registerClientbound(ClientboundPackets1_19_4.MOVE_ENTITY_POS, entityPositionHandler);

common/src/main/java/com/viaversion/viabackwards/protocol/v1_19to1_18_2/Protocol1_19To1_18_2.java

@@ -86,6 +86,7 @@ public final class Protocol1_19To1_18_2 extends BackwardsProtocol<ClientboundPac
         translatableRewriter.registerBossEvent(ClientboundPackets1_19.BOSS_EVENT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_19.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_19.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_13(ClientboundPackets1_19.SET_PLAYER_TEAM);
         translatableRewriter.registerOpenScreen1_14(ClientboundPackets1_19.OPEN_SCREEN);
         translatableRewriter.registerPlayerCombatKill(ClientboundPackets1_19.PLAYER_COMBAT_KILL);
         translatableRewriter.registerPing();

common/src/main/java/com/viaversion/viabackwards/protocol/v1_20_5to1_20_3/Protocol1_20_5To1_20_3.java

@@ -111,6 +111,7 @@ public final class Protocol1_20_5To1_20_3 extends BackwardsProtocol<ClientboundP
         translatableRewriter.registerBossEvent(ClientboundPackets1_20_5.BOSS_EVENT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_20_5.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_20_5.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_13(ClientboundPackets1_20_5.SET_PLAYER_TEAM);
         translatableRewriter.registerPlayerCombatKill1_20(ClientboundPackets1_20_5.PLAYER_COMBAT_KILL);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_20_5.SYSTEM_CHAT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_20_5.DISGUISED_CHAT);

common/src/main/java/com/viaversion/viabackwards/protocol/v1_20to1_19_4/Protocol1_20To1_19_4.java

@@ -71,6 +71,7 @@ public final class Protocol1_20To1_19_4 extends BackwardsProtocol<ClientboundPac
         translatableRewriter.registerBossEvent(ClientboundPackets1_19_4.BOSS_EVENT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_19_4.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_19_4.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_13(ClientboundPackets1_19_4.SET_PLAYER_TEAM);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_19_4.SYSTEM_CHAT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_19_4.DISGUISED_CHAT);
         translatableRewriter.registerPing();

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_11to1_21_9/Protocol1_21_11To1_21_9.java

@@ -0,0 +1,251 @@
+/*
+ * 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.v1_21_11to1_21_9;
+
+import com.viaversion.nbt.tag.ByteTag;
+import com.viaversion.nbt.tag.CompoundTag;
+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.rewriters.BackwardsRegistryRewriter;
+import com.viaversion.viabackwards.api.rewriters.SoundRewriter;
+import com.viaversion.viabackwards.api.rewriters.text.NBTComponentRewriter;
+import com.viaversion.viabackwards.protocol.v1_21_11to1_21_9.rewriter.BlockItemPacketRewriter1_21_11;
+import com.viaversion.viabackwards.protocol.v1_21_11to1_21_9.rewriter.ComponentRewriter1_21_11;
+import com.viaversion.viabackwards.protocol.v1_21_11to1_21_9.rewriter.EntityPacketRewriter1_21_11;
+import com.viaversion.viabackwards.protocol.v1_21_11to1_21_9.storage.GameTimeStorage;
+import com.viaversion.viaversion.api.connection.UserConnection;
+import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_21_11;
+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.VersionedTypes;
+import com.viaversion.viaversion.api.type.types.version.VersionedTypesHolder;
+import com.viaversion.viaversion.data.entity.EntityTrackerBase;
+import com.viaversion.viaversion.data.item.ItemHasherBase;
+import com.viaversion.viaversion.protocols.v1_21_5to1_21_6.packet.ServerboundPackets1_21_6;
+import com.viaversion.viaversion.protocols.v1_21_7to1_21_9.packet.ClientboundConfigurationPackets1_21_9;
+import com.viaversion.viaversion.protocols.v1_21_7to1_21_9.packet.ClientboundPacket1_21_9;
+import com.viaversion.viaversion.protocols.v1_21_7to1_21_9.packet.ClientboundPackets1_21_9;
+import com.viaversion.viaversion.protocols.v1_21_7to1_21_9.packet.ServerboundConfigurationPackets1_21_9;
+import com.viaversion.viaversion.protocols.v1_21_7to1_21_9.packet.ServerboundPacket1_21_9;
+import com.viaversion.viaversion.protocols.v1_21_9to1_21_11.Protocol1_21_9To1_21_11;
+import com.viaversion.viaversion.protocols.v1_21_9to1_21_11.packet.ClientboundPacket1_21_11;
+import com.viaversion.viaversion.protocols.v1_21_9to1_21_11.packet.ClientboundPackets1_21_11;
+import com.viaversion.viaversion.rewriter.AttributeRewriter;
+import com.viaversion.viaversion.rewriter.ParticleRewriter;
+import com.viaversion.viaversion.rewriter.RegistryDataRewriter;
+import com.viaversion.viaversion.rewriter.StatisticsRewriter;
+import com.viaversion.viaversion.rewriter.TagRewriter;
+import com.viaversion.viaversion.util.Key;
+import com.viaversion.viaversion.util.TagUtil;
+import java.util.function.Function;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+import static com.viaversion.viaversion.util.ProtocolUtil.packetTypeMap;
+import static com.viaversion.viaversion.util.TagUtil.getNamespacedTag;
+
+public final class Protocol1_21_11To1_21_9 extends BackwardsProtocol<ClientboundPacket1_21_11, ClientboundPacket1_21_9, ServerboundPacket1_21_9, ServerboundPacket1_21_9> {
+
+    public static final BackwardsMappingData MAPPINGS = new BackwardsMappingData("1.21.11", "1.21.9", Protocol1_21_9To1_21_11.class);
+    private static final int END_FOG_COLOR = 10518688;
+    private static final int OVERWORLD_FOG_COLOR = 126384063;
+    private final EntityPacketRewriter1_21_11 entityRewriter = new EntityPacketRewriter1_21_11(this);
+    private final BlockItemPacketRewriter1_21_11 itemRewriter = new BlockItemPacketRewriter1_21_11(this);
+    private final ParticleRewriter<ClientboundPacket1_21_11> particleRewriter = new ParticleRewriter<>(this);
+    private final NBTComponentRewriter<ClientboundPacket1_21_11> translatableRewriter = new ComponentRewriter1_21_11(this);
+    private final TagRewriter<ClientboundPacket1_21_11> tagRewriter = new TagRewriter<>(this);
+    private final RegistryDataRewriter registryDataRewriter = new BackwardsRegistryRewriter(this);
+
+    public Protocol1_21_11To1_21_9() {
+        super(ClientboundPacket1_21_11.class, ClientboundPacket1_21_9.class, ServerboundPacket1_21_9.class, ServerboundPacket1_21_9.class);
+    }
+
+    private void moveAttribute(final CompoundTag baseTag, @Nullable final CompoundTag attributes, final String key, final String mappedKey, final Function<Tag, Tag> tagMapper, @Nullable final Tag defaultTag) {
+        final Tag attributeTag;
+        if (attributes != null && (attributeTag = getNamespacedTag(attributes, key)) != null) {
+            baseTag.put(mappedKey, tagMapper.apply(attributeTag));
+        } else if (defaultTag != null) {
+            baseTag.put(mappedKey, defaultTag);
+        }
+    }
+
+    private int floatsToARGB(final float r, final float g, final float b) {
+        return 255 << 24 | (int) (r * 255) << 16 | (int) (g * 255) << 8 | (int) (b * 255);
+    }
+
+    @Override
+    protected void registerPackets() {
+        super.registerPackets();
+
+        // Add back mandatory fields from attributes, though most don't have any use in the client
+        registryDataRewriter.addHandler("dimension_type", (key, tag) -> {
+            if (Key.equals(key, "the_nether")) {
+                tag.putString("effects", "minecraft:the_nether");
+                tag.putBoolean("natural", false);
+            } else if (Key.equals(key, "the_end")) {
+                tag.putString("effects", "minecraft:the_end");
+                tag.putBoolean("natural", false);
+            } else {
+                tag.putString("effects", "minecraft:overworld");
+                tag.putBoolean("natural", true);
+            }
+
+            final ByteTag trueTag = new ByteTag((byte) 1);
+            final CompoundTag attributes = tag.getCompoundTag("attributes");
+            moveAttribute(tag, attributes, "visual/cloud_height", "cloud_height", Function.identity(), null);
+            moveAttribute(tag, attributes, "gameplay/can_start_raid", "has_raids", Function.identity(), trueTag);
+            moveAttribute(tag, attributes, "gameplay/can_start_raid", "has_raids", Function.identity(), trueTag);
+            moveAttribute(tag, attributes, "gameplay/piglins_zombify", "piglin_safe", attributeTag -> ((NumberTag) attributeTag).asBoolean() ? ByteTag.ZERO : trueTag, ByteTag.ZERO);
+            moveAttribute(tag, attributes, "gameplay/respawn_anchor_works", "respawn_anchor_works", Function.identity(), trueTag);
+            moveAttribute(tag, attributes, "gameplay/bed_rule", "bed_works", attributeTag -> {
+                final CompoundTag bedRule = (CompoundTag) attributeTag;
+                return bedRule.getBoolean("can_sleep") || bedRule.getBoolean("can_set_spawn") ? trueTag : ByteTag.ZERO;
+            }, trueTag);
+            // Many different functions back into one, all have different effects on the client, so pick the most important one...
+            moveAttribute(tag, attributes, "gameplay/fast_lava", "ultrawarm", Function.identity(), ByteTag.ZERO);
+        });
+        registryDataRewriter.addHandler("worldgen/biome", (key, tag) -> {
+            final CompoundTag effects = tag.getCompoundTag("effects");
+
+            final CompoundTag attributes = tag.removeUnchecked("attributes");
+            moveAttribute(effects, attributes, "visual/sky_color", "sky_color", this::mapColor, new IntTag(0));
+            moveAttribute(effects, attributes, "visual/water_fog_color", "water_fog_color", this::mapColor, new IntTag(-16448205));
+            moveAttribute(effects, attributes, "visual/fog_color", "fog_color", this::mapColor, new IntTag(Key.equals(key, "the_end") ? END_FOG_COLOR : OVERWORLD_FOG_COLOR)); // overworld fog color as default
+
+            moveAttribute(effects, effects, "water_color", "water_color", this::mapColor, new IntTag(4159204));
+            moveAttribute(effects, effects, "foliage_color", "foliage_color", this::mapColor, null);
+            moveAttribute(effects, effects, "dry_foliage_color", "dry_foliage_color", this::mapColor, null);
+            moveAttribute(effects, effects, "grass_color", "grass_color", this::mapColor, null);
+        });
+        registryDataRewriter.addHandler("enchantment", (key, tag) -> {
+            final CompoundTag effects = tag.getCompoundTag("effects");
+            if (effects != null) {
+                TagUtil.removeNamespaced(effects, "post_piercing_attack");
+            }
+        });
+        registerClientbound(ClientboundConfigurationPackets1_21_9.REGISTRY_DATA, registryDataRewriter::handle);
+
+        tagRewriter.removeTags("timeline");
+        tagRewriter.registerGeneric(ClientboundPackets1_21_11.UPDATE_TAGS);
+        tagRewriter.registerGeneric(ClientboundConfigurationPackets1_21_9.UPDATE_TAGS);
+
+        final SoundRewriter<ClientboundPacket1_21_11> soundRewriter = new SoundRewriter<>(this);
+        soundRewriter.registerSound1_19_3(ClientboundPackets1_21_11.SOUND);
+        soundRewriter.registerSound1_19_3(ClientboundPackets1_21_11.SOUND_ENTITY);
+        soundRewriter.registerStopSound(ClientboundPackets1_21_11.STOP_SOUND);
+
+        new StatisticsRewriter<>(this).register(ClientboundPackets1_21_11.AWARD_STATS);
+        new AttributeRewriter<>(this).register1_21(ClientboundPackets1_21_11.UPDATE_ATTRIBUTES);
+
+        translatableRewriter.registerOpenScreen1_14(ClientboundPackets1_21_11.OPEN_SCREEN);
+        translatableRewriter.registerComponentPacket(ClientboundPackets1_21_11.SET_ACTION_BAR_TEXT);
+        translatableRewriter.registerComponentPacket(ClientboundPackets1_21_11.SET_TITLE_TEXT);
+        translatableRewriter.registerComponentPacket(ClientboundPackets1_21_11.SET_SUBTITLE_TEXT);
+        translatableRewriter.registerBossEvent(ClientboundPackets1_21_11.BOSS_EVENT);
+        translatableRewriter.registerComponentPacket(ClientboundPackets1_21_11.DISCONNECT);
+        translatableRewriter.registerTabList(ClientboundPackets1_21_11.TAB_LIST);
+        translatableRewriter.registerPlayerCombatKill1_20(ClientboundPackets1_21_11.PLAYER_COMBAT_KILL);
+        translatableRewriter.registerPlayerInfoUpdate1_21_4(ClientboundPackets1_21_11.PLAYER_INFO_UPDATE);
+        translatableRewriter.registerComponentPacket(ClientboundPackets1_21_11.SYSTEM_CHAT);
+        translatableRewriter.registerDisguisedChat(ClientboundPackets1_21_11.DISGUISED_CHAT);
+        translatableRewriter.registerPlayerChat1_21_5(ClientboundPackets1_21_11.PLAYER_CHAT);
+        translatableRewriter.registerPing();
+
+        particleRewriter.registerLevelParticles1_21_4(ClientboundPackets1_21_11.LEVEL_PARTICLES);
+        particleRewriter.registerExplode1_21_9(ClientboundPackets1_21_11.EXPLODE);
+    }
+
+    @Override
+    public void init(final UserConnection connection) {
+        addEntityTracker(connection, new EntityTrackerBase(connection, EntityTypes1_21_11.PLAYER));
+        addItemHasher(connection, new ItemHasherBase(this, connection));
+        connection.put(new GameTimeStorage());
+    }
+
+    @Override
+    public BackwardsMappingData getMappingData() {
+        return MAPPINGS;
+    }
+
+    @Override
+    public EntityPacketRewriter1_21_11 getEntityRewriter() {
+        return entityRewriter;
+    }
+
+    @Override
+    public BlockItemPacketRewriter1_21_11 getItemRewriter() {
+        return itemRewriter;
+    }
+
+    @Override
+    public RegistryDataRewriter getRegistryDataRewriter() {
+        return registryDataRewriter;
+    }
+
+    @Override
+    public ParticleRewriter<ClientboundPacket1_21_11> getParticleRewriter() {
+        return particleRewriter;
+    }
+
+    @Override
+    public NBTComponentRewriter<ClientboundPacket1_21_11> getComponentRewriter() {
+        return translatableRewriter;
+    }
+
+    @Override
+    public TagRewriter<ClientboundPacket1_21_11> getTagRewriter() {
+        return tagRewriter;
+    }
+
+    @Override
+    public VersionedTypesHolder types() {
+        return VersionedTypes.V1_21_11;
+    }
+
+    @Override
+    public VersionedTypesHolder mappedTypes() {
+        return VersionedTypes.V1_21_9;
+    }
+
+    @Override
+    protected PacketTypesProvider<ClientboundPacket1_21_11, ClientboundPacket1_21_9, ServerboundPacket1_21_9, ServerboundPacket1_21_9> createPacketTypesProvider() {
+        return new SimplePacketTypesProvider<>(
+            packetTypeMap(unmappedClientboundPacketType, ClientboundPackets1_21_11.class, ClientboundConfigurationPackets1_21_9.class),
+            packetTypeMap(mappedClientboundPacketType, ClientboundPackets1_21_9.class, ClientboundConfigurationPackets1_21_9.class),
+            packetTypeMap(mappedServerboundPacketType, ServerboundPackets1_21_6.class, ServerboundConfigurationPackets1_21_9.class),
+            packetTypeMap(unmappedServerboundPacketType, ServerboundPackets1_21_6.class, ServerboundConfigurationPackets1_21_9.class)
+        );
+    }
+
+    private Tag mapColor(final Tag attributeTag) {
+        if (attributeTag instanceof ListTag<?> listTag) {
+            final NumberTag r = ((NumberTag) listTag.get(0));
+            final NumberTag g = ((NumberTag) listTag.get(1));
+            final NumberTag b = ((NumberTag) listTag.get(2));
+            return new IntTag(floatsToARGB(r.asFloat(), g.asFloat(), b.asFloat()));
+        } else if (attributeTag instanceof StringTag stringTag) {
+            // Remove '#' and parse hex string
+            return new IntTag(Integer.parseInt(stringTag.getValue().substring(1), 16));
+        }
+        return attributeTag;
+    }
+}

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_11to1_21_9/rewriter/BlockItemPacketRewriter1_21_11.java

@@ -0,0 +1,295 @@
+/*
+ * 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.v1_21_11to1_21_9.rewriter;
+
+import com.viaversion.nbt.tag.CompoundTag;
+import com.viaversion.nbt.tag.IntTag;
+import com.viaversion.nbt.tag.StringTag;
+import com.viaversion.nbt.tag.Tag;
+import com.viaversion.viabackwards.api.rewriters.BackwardsStructuredItemRewriter;
+import com.viaversion.viabackwards.protocol.v1_21_11to1_21_9.Protocol1_21_11To1_21_9;
+import com.viaversion.viabackwards.protocol.v1_21_11to1_21_9.storage.GameTimeStorage;
+import com.viaversion.viaversion.api.connection.UserConnection;
+import com.viaversion.viaversion.api.minecraft.Holder;
+import com.viaversion.viaversion.api.minecraft.SoundEvent;
+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.AttackRange;
+import com.viaversion.viaversion.api.minecraft.item.data.DamageType;
+import com.viaversion.viaversion.api.minecraft.item.data.KineticWeapon;
+import com.viaversion.viaversion.api.minecraft.item.data.PiercingWeapon;
+import com.viaversion.viaversion.api.minecraft.item.data.SwingAnimation;
+import com.viaversion.viaversion.api.minecraft.item.data.UseEffects;
+import com.viaversion.viaversion.api.type.Types;
+import com.viaversion.viaversion.api.type.types.chunk.ChunkType1_21_5;
+import com.viaversion.viaversion.protocols.v1_21_4to1_21_5.rewriter.RecipeDisplayRewriter1_21_5;
+import com.viaversion.viaversion.protocols.v1_21_5to1_21_6.packet.ServerboundPackets1_21_6;
+import com.viaversion.viaversion.protocols.v1_21_7to1_21_9.packet.ServerboundPacket1_21_9;
+import com.viaversion.viaversion.protocols.v1_21_9to1_21_11.packet.ClientboundPacket1_21_11;
+import com.viaversion.viaversion.protocols.v1_21_9to1_21_11.packet.ClientboundPackets1_21_11;
+import com.viaversion.viaversion.rewriter.BlockRewriter;
+import com.viaversion.viaversion.rewriter.RecipeDisplayRewriter;
+import com.viaversion.viaversion.util.Either;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+import static com.viaversion.viaversion.protocols.v1_21_9to1_21_11.rewriter.BlockItemPacketRewriter1_21_11.downgradeData;
+import static com.viaversion.viaversion.protocols.v1_21_9to1_21_11.rewriter.BlockItemPacketRewriter1_21_11.upgradeData;
+
+public final class BlockItemPacketRewriter1_21_11 extends BackwardsStructuredItemRewriter<ClientboundPacket1_21_11, ServerboundPacket1_21_9, Protocol1_21_11To1_21_9> {
+
+    public BlockItemPacketRewriter1_21_11(final Protocol1_21_11To1_21_9 protocol) {
+        super(protocol);
+    }
+
+    @Override
+    public void registerPackets() {
+        final BlockRewriter<ClientboundPacket1_21_11> blockRewriter = BlockRewriter.for1_20_2(protocol);
+        blockRewriter.registerBlockEvent(ClientboundPackets1_21_11.BLOCK_EVENT);
+        blockRewriter.registerBlockUpdate(ClientboundPackets1_21_11.BLOCK_UPDATE);
+        blockRewriter.registerSectionBlocksUpdate1_20(ClientboundPackets1_21_11.SECTION_BLOCKS_UPDATE);
+        blockRewriter.registerLevelEvent1_21(ClientboundPackets1_21_11.LEVEL_EVENT, 2001);
+        blockRewriter.registerLevelChunk1_19(ClientboundPackets1_21_11.LEVEL_CHUNK_WITH_LIGHT, ChunkType1_21_5::new);
+        blockRewriter.registerBlockEntityData(ClientboundPackets1_21_11.BLOCK_ENTITY_DATA);
+
+        registerSetCursorItem(ClientboundPackets1_21_11.SET_CURSOR_ITEM);
+        registerSetPlayerInventory(ClientboundPackets1_21_11.SET_PLAYER_INVENTORY);
+        registerCooldown1_21_2(ClientboundPackets1_21_11.COOLDOWN);
+        registerSetContent1_21_2(ClientboundPackets1_21_11.CONTAINER_SET_CONTENT);
+        registerSetSlot1_21_2(ClientboundPackets1_21_11.CONTAINER_SET_SLOT);
+        registerAdvancements1_20_3(ClientboundPackets1_21_11.UPDATE_ADVANCEMENTS);
+        registerSetEquipment(ClientboundPackets1_21_11.SET_EQUIPMENT);
+        registerMerchantOffers1_20_5(ClientboundPackets1_21_11.MERCHANT_OFFERS);
+        registerContainerClick1_21_5(ServerboundPackets1_21_6.CONTAINER_CLICK);
+        registerSetCreativeModeSlot1_21_5(ServerboundPackets1_21_6.SET_CREATIVE_MODE_SLOT);
+
+        final RecipeDisplayRewriter<ClientboundPacket1_21_11> recipeRewriter = new RecipeDisplayRewriter1_21_5<>(protocol);
+        recipeRewriter.registerUpdateRecipes(ClientboundPackets1_21_11.UPDATE_RECIPES);
+        recipeRewriter.registerRecipeBookAdd(ClientboundPackets1_21_11.RECIPE_BOOK_ADD);
+        recipeRewriter.registerPlaceGhostRecipe(ClientboundPackets1_21_11.PLACE_GHOST_RECIPE);
+
+        protocol.registerClientbound(ClientboundPackets1_21_11.SET_TIME, wrapper -> {
+            final long gameTime = wrapper.passthrough(Types.LONG);
+            wrapper.user().get(GameTimeStorage.class).setGameTime(gameTime);
+        });
+        protocol.registerServerbound(ServerboundPackets1_21_6.CLIENT_TICK_END, wrapper -> {
+            wrapper.user().get(GameTimeStorage.class).incrementGameTime();
+        });
+    }
+
+    @Override
+    protected void handleItemDataComponentsToClient(final UserConnection connection, final Item item, final StructuredDataContainer container) {
+        super.handleItemDataComponentsToClient(connection, item, container);
+        downgradeData(item, container);
+    }
+
+    @Override
+    protected void handleItemDataComponentsToServer(final UserConnection connection, final Item item, final StructuredDataContainer container) {
+        super.handleItemDataComponentsToServer(connection, item, container);
+        upgradeData(item, container);
+    }
+
+    @Override
+    protected void restoreBackupData(final Item item, final StructuredDataContainer container, final CompoundTag customData) {
+        super.restoreBackupData(item, container, customData);
+
+        if (!(customData.remove(nbtTagName("backup")) instanceof final CompoundTag backupTag)) {
+            return;
+        }
+
+        final CompoundTag swingTag = backupTag.getCompoundTag("swing_animation");
+        if (swingTag != null) {
+            final int type = swingTag.getInt("type");
+            final int duration = swingTag.getInt("duration");
+            container.set(StructuredDataKey.SWING_ANIMATION, new SwingAnimation(type, duration));
+        }
+
+        final CompoundTag kineticTag = backupTag.getCompoundTag("kinetic_weapon");
+        if (kineticTag != null) {
+            final int contactCooldownTicks = kineticTag.getInt("contact_cooldown_ticks");
+            final int delayTicks = kineticTag.getInt("delay_ticks");
+            final KineticWeapon.Condition damageConditions = loadDamageCondition(kineticTag, "damage_conditions");
+            final KineticWeapon.Condition dismountConditions = loadDamageCondition(kineticTag, "dismount_conditions");
+            final KineticWeapon.Condition knockbackConditions = loadDamageCondition(kineticTag, "knockback_conditions");
+            final float forwardMovement = kineticTag.getFloat("forward_movement");
+            final float damageMultiplier = kineticTag.getFloat("damage_multiplier");
+            final Holder<SoundEvent> sound = kineticTag.contains("sound") ? restoreSoundEventHolder(kineticTag, "sound") : null;
+            final Holder<SoundEvent> hitSound = kineticTag.contains("hit_sound") ? restoreSoundEventHolder(kineticTag, "hit_sound") : null;
+            container.set(StructuredDataKey.KINETIC_WEAPON, new KineticWeapon(contactCooldownTicks, delayTicks, damageConditions, dismountConditions, knockbackConditions, forwardMovement, damageMultiplier, sound, hitSound));
+        }
+
+        final CompoundTag piercingTag = backupTag.getCompoundTag("piercing_weapon");
+        if (piercingTag != null) {
+            final boolean dealsKnockback = piercingTag.getBoolean("deals_knockback");
+            final boolean dismounts = piercingTag.getBoolean("dismounts");
+            final Holder<SoundEvent> sound = piercingTag.contains("sound") ? restoreSoundEventHolder(piercingTag, "sound") : null;
+            final Holder<SoundEvent> hitSound = piercingTag.contains("hit_sound") ? restoreSoundEventHolder(piercingTag, "hit_sound") : null;
+            container.set(StructuredDataKey.PIERCING_WEAPON, new PiercingWeapon(dealsKnockback, dismounts, sound, hitSound));
+        }
+
+        final Tag damageTypeId = backupTag.get("damage_type_id");
+        if (damageTypeId != null) {
+            if (damageTypeId instanceof StringTag stringTag) {
+                container.set(StructuredDataKey.DAMAGE_TYPE, new DamageType(Either.right(stringTag.getValue())));
+            } else if (damageTypeId instanceof IntTag intTag) {
+                container.set(StructuredDataKey.DAMAGE_TYPE, new DamageType(Either.left(intTag.asInt())));
+            }
+        }
+
+        final CompoundTag useEffectsTag = backupTag.getCompoundTag("use_effects");
+        if (useEffectsTag != null) {
+            final boolean canSprint = useEffectsTag.getBoolean("can_sprint");
+            final boolean interactVibrations = useEffectsTag.getBoolean("interact_vibrations");
+            final float speedMultiplier = useEffectsTag.getFloat("speed_multiplier");
+            container.set(StructuredDataKey.USE_EFFECTS, new UseEffects(canSprint, interactVibrations, speedMultiplier));
+        }
+
+        final CompoundTag attackRangeTag = backupTag.getCompoundTag("attack_range");
+        if (attackRangeTag != null) {
+            final float minRange = attackRangeTag.getFloat("min_range");
+            final float maxRange = attackRangeTag.getFloat("max_range");
+            final float minCreativeRange = attackRangeTag.getFloat("min_creative_reach");
+            final float maxCreativeRange = attackRangeTag.getFloat("max_creative_reach");
+            final float hitboxMargin = attackRangeTag.getFloat("hitbox_margin");
+            final float mobFactor = attackRangeTag.getFloat("mob_factor");
+            container.set(StructuredDataKey.ATTACK_RANGE, new AttackRange(minRange, maxRange, minCreativeRange, maxCreativeRange, hitboxMargin, mobFactor));
+        }
+
+        final Tag zombieNautilusVariantTag = backupTag.get("zombie_nautilus_variant");
+        if (zombieNautilusVariantTag != null) {
+            if (zombieNautilusVariantTag instanceof StringTag stringTag) {
+                container.set(StructuredDataKey.ZOMBIE_NAUTILUS_VARIANT, Either.right(stringTag.getValue()));
+            } else if (zombieNautilusVariantTag instanceof IntTag intTag) {
+                container.set(StructuredDataKey.ZOMBIE_NAUTILUS_VARIANT, Either.left(intTag.asInt()));
+            }
+        }
+
+        restoreFloatData(StructuredDataKey.MINIMUM_ATTACK_CHARGE, container, backupTag);
+    }
+
+    private KineticWeapon.Condition loadDamageCondition(final CompoundTag tag, final String key) {
+        final CompoundTag conditionTag = tag.getCompoundTag(key);
+        if (conditionTag == null) {
+            return null;
+        }
+
+        final int maxDurationTicks = conditionTag.getInt("max_duration_ticks");
+        final float minSpeed = conditionTag.getFloat("min_speed");
+        final float minRelativeSpeed = conditionTag.getFloat("min_relative_speed");
+        return new KineticWeapon.Condition(maxDurationTicks, minSpeed, minRelativeSpeed);
+    }
+
+    @Override
+    protected void backupInconvertibleData(final UserConnection connection, final Item item, final StructuredDataContainer dataContainer, final CompoundTag backupTag) {
+        super.backupInconvertibleData(connection, item, dataContainer, backupTag);
+
+        final SwingAnimation swingAnimation = dataContainer.get(StructuredDataKey.SWING_ANIMATION);
+        if (swingAnimation != null) {
+            final CompoundTag swingTag = new CompoundTag();
+            swingTag.putInt("type", swingAnimation.type());
+            swingTag.putInt("duration", swingAnimation.duration());
+            backupTag.put("swing_animation", swingTag);
+        }
+
+        final KineticWeapon kineticWeapon = dataContainer.get(StructuredDataKey.KINETIC_WEAPON);
+        if (kineticWeapon != null) {
+            final CompoundTag kineticTag = new CompoundTag();
+            kineticTag.putInt("contact_cooldown_ticks", kineticWeapon.contactCooldownTicks());
+            kineticTag.putInt("delay_ticks", kineticWeapon.delayTicks());
+            saveDamageCondition(kineticTag, "damage_conditions", kineticWeapon.damageConditions());
+            saveDamageCondition(kineticTag, "dismount_conditions", kineticWeapon.dismountConditions());
+            saveDamageCondition(kineticTag, "knockback_conditions", kineticWeapon.knockbackConditions());
+            kineticTag.putFloat("forward_movement", kineticWeapon.forwardMovement());
+            kineticTag.putFloat("damage_multiplier", kineticWeapon.damageMultiplier());
+            if (kineticWeapon.sound() != null) {
+                kineticTag.put("sound", holderToTag(kineticWeapon.sound(), this::saveSoundEvent));
+            }
+            if (kineticWeapon.hitSound() != null) {
+                kineticTag.put("hit_sound", holderToTag(kineticWeapon.hitSound(), this::saveSoundEvent));
+            }
+            backupTag.put("kinetic_weapon", kineticTag);
+        }
+
+        final PiercingWeapon piercingWeapon = dataContainer.get(StructuredDataKey.PIERCING_WEAPON);
+        if (piercingWeapon != null) {
+            final CompoundTag piercingTag = new CompoundTag();
+            piercingTag.putBoolean("deals_knockback", piercingWeapon.dealsKnockback());
+            piercingTag.putBoolean("dismounts", piercingWeapon.dismounts());
+            if (piercingWeapon.sound() != null) {
+                piercingTag.put("sound", holderToTag(piercingWeapon.sound(), this::saveSoundEvent));
+            }
+            if (piercingWeapon.hitSound() != null) {
+                piercingTag.put("hit_sound", holderToTag(piercingWeapon.hitSound(), this::saveSoundEvent));
+            }
+            backupTag.put("piercing_weapon", piercingTag);
+        }
+
+        final DamageType damageType = dataContainer.get(StructuredDataKey.DAMAGE_TYPE);
+        if (damageType != null) {
+            if (damageType.id().isLeft()) {
+                backupTag.putInt("damage_type_id", damageType.id().left());
+            } else {
+                backupTag.putString("damage_type_id", damageType.id().right());
+            }
+        }
+
+        final UseEffects useEffects = dataContainer.get(StructuredDataKey.USE_EFFECTS);
+        if (useEffects != null) {
+            final CompoundTag useEffectsTag = new CompoundTag();
+            useEffectsTag.putBoolean("can_sprint", useEffects.canSprint());
+            useEffectsTag.putBoolean("interact_vibrations", useEffects.interactVibrations());
+            useEffectsTag.putFloat("speed_multiplier", useEffects.speedMultiplier());
+            backupTag.put("use_effects", useEffectsTag);
+        }
+
+        final AttackRange attackRange = dataContainer.get(StructuredDataKey.ATTACK_RANGE);
+        if (attackRange != null) {
+            final CompoundTag attackRangeTag = new CompoundTag();
+            attackRangeTag.putFloat("min_range", attackRange.minRange());
+            attackRangeTag.putFloat("max_range", attackRange.maxRange());
+            attackRangeTag.putFloat("min_creative_reach", attackRange.minCreativeRange());
+            attackRangeTag.putFloat("max_creative_reach", attackRange.maxCreativeRange());
+            attackRangeTag.putFloat("hitbox_margin", attackRange.hitboxMargin());
+            attackRangeTag.putFloat("mob_factor", attackRange.mobFactor());
+            backupTag.put("attack_range", attackRangeTag);
+        }
+
+        final Either<Integer, String> zombieNautilusVariant = dataContainer.get(StructuredDataKey.ZOMBIE_NAUTILUS_VARIANT);
+        if (zombieNautilusVariant != null) {
+            if (zombieNautilusVariant.isLeft()) {
+                backupTag.putInt("zombie_nautilus_variant", zombieNautilusVariant.left());
+            } else {
+                backupTag.putString("zombie_nautilus_variant", zombieNautilusVariant.right());
+            }
+        }
+
+        saveFloatData(StructuredDataKey.MINIMUM_ATTACK_CHARGE, dataContainer, backupTag);
+    }
+
+    private void saveDamageCondition(final CompoundTag tag, final String key, final KineticWeapon.@Nullable Condition condition) {
+        if (condition == null) {
+            return;
+        }
+
+        final CompoundTag conditionTag = new CompoundTag();
+        conditionTag.putInt("max_duration_ticks", condition.maxDurationTicks());
+        conditionTag.putFloat("min_speed", condition.minSpeed());
+        conditionTag.putFloat("min_relative_speed", condition.minRelativeSpeed());
+        tag.put(key, conditionTag);
+    }
+}

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_11to1_21_9/rewriter/ComponentRewriter1_21_11.java

@@ -0,0 +1,43 @@
+/*
+ * 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.v1_21_11to1_21_9.rewriter;
+
+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.api.minecraft.data.StructuredDataKey;
+import com.viaversion.viaversion.protocols.v1_21_9to1_21_11.packet.ClientboundPacket1_21_11;
+
+public final class ComponentRewriter1_21_11 extends NBTComponentRewriter<ClientboundPacket1_21_11> {
+
+    public ComponentRewriter1_21_11(final BackwardsProtocol<ClientboundPacket1_21_11, ?, ?, ?> 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;
+        }
+
+        removeDataComponents(componentsTag, StructuredDataKey.SWING_ANIMATION, StructuredDataKey.KINETIC_WEAPON, StructuredDataKey.PIERCING_WEAPON,
+            StructuredDataKey.DAMAGE_TYPE, StructuredDataKey.MINIMUM_ATTACK_CHARGE, StructuredDataKey.USE_EFFECTS, StructuredDataKey.ZOMBIE_NAUTILUS_VARIANT, StructuredDataKey.ATTACK_RANGE);
+    }
+}

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_11to1_21_9/rewriter/EntityPacketRewriter1_21_11.java

@@ -0,0 +1,107 @@
+/*
+ * 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.v1_21_11to1_21_9.rewriter;
+
+import com.viaversion.viabackwards.api.rewriters.EntityRewriter;
+import com.viaversion.viabackwards.protocol.v1_21_11to1_21_9.Protocol1_21_11To1_21_9;
+import com.viaversion.viabackwards.protocol.v1_21_11to1_21_9.storage.GameTimeStorage;
+import com.viaversion.viaversion.api.minecraft.entities.EntityType;
+import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_21_11;
+import com.viaversion.viaversion.api.minecraft.entitydata.EntityData;
+import com.viaversion.viaversion.api.minecraft.entitydata.types.EntityDataTypes1_21_11;
+import com.viaversion.viaversion.api.minecraft.entitydata.types.EntityDataTypes1_21_9;
+import com.viaversion.viaversion.api.type.types.version.VersionedTypes;
+import com.viaversion.viaversion.protocols.v1_21_7to1_21_9.packet.ClientboundPackets1_21_9;
+import com.viaversion.viaversion.protocols.v1_21_9to1_21_11.packet.ClientboundPacket1_21_11;
+import com.viaversion.viaversion.protocols.v1_21_9to1_21_11.packet.ClientboundPackets1_21_11;
+import com.viaversion.viaversion.rewriter.entitydata.EntityDataHandlerEvent;
+
+public final class EntityPacketRewriter1_21_11 extends EntityRewriter<ClientboundPacket1_21_11, Protocol1_21_11To1_21_9> {
+
+    public EntityPacketRewriter1_21_11(final Protocol1_21_11To1_21_9 protocol) {
+        super(protocol, VersionedTypes.V1_21_9.entityDataTypes.optionalComponentType, VersionedTypes.V1_21_9.entityDataTypes.booleanType);
+    }
+
+    @Override
+    public void registerPackets() {
+        registerTrackerWithData1_21_9(ClientboundPackets1_21_11.ADD_ENTITY, EntityTypes1_21_11.FALLING_BLOCK);
+        registerSetEntityData(ClientboundPackets1_21_11.SET_ENTITY_DATA);
+        registerRemoveEntities(ClientboundPackets1_21_11.REMOVE_ENTITIES);
+        registerPlayerAbilities(ClientboundPackets1_21_11.PLAYER_ABILITIES);
+        registerGameEvent(ClientboundPackets1_21_11.GAME_EVENT);
+        registerLogin1_20_5(ClientboundPackets1_21_11.LOGIN);
+        registerRespawn1_20_5(ClientboundPackets1_21_11.RESPAWN);
+
+        protocol.registerClientbound(ClientboundPackets1_21_11.MOUNT_SCREEN_OPEN, ClientboundPackets1_21_9.HORSE_SCREEN_OPEN);
+    }
+
+    @Override
+    protected void registerRewrites() {
+        final EntityDataTypes1_21_11 unmappedDataTypes = VersionedTypes.V1_21_11.entityDataTypes;
+        final EntityDataTypes1_21_9 entityDataTypes = VersionedTypes.V1_21_9.entityDataTypes;
+        filter().mapDataType(id -> {
+            if (id == unmappedDataTypes.humanoidArmType.typeId() || id == unmappedDataTypes.zombieNautilusVariantType.typeId()) {
+                return null;
+            }
+            if (id > unmappedDataTypes.zombieNautilusVariantType.typeId()) {
+                id--;
+            }
+            return entityDataTypes.byId(id);
+        });
+        registerEntityDataTypeHandler1_20_3(
+            entityDataTypes.itemType,
+            entityDataTypes.blockStateType,
+            entityDataTypes.optionalBlockStateType,
+            entityDataTypes.particleType,
+            entityDataTypes.particlesType,
+            entityDataTypes.componentType,
+            entityDataTypes.optionalComponentType
+        );
+
+        filter().type(EntityTypes1_21_11.AVATAR).index(15).handler(((event, data) -> {
+            final int arm = data.value();
+            data.setTypeAndValue(entityDataTypes.byteType, (byte) arm);
+        }));
+        filter().type(EntityTypes1_21_11.WOLF).index(21).handler(this::absoluteToRelativeTicks);
+        filter().type(EntityTypes1_21_11.BEE).index(18).handler(this::absoluteToRelativeTicks);
+
+        filter().type(EntityTypes1_21_11.ABSTRACT_NAUTILUS).removeIndex(19); // Dashing
+        filter().type(EntityTypes1_21_11.ZOMBIE_NAUTILUS).removeIndex(20); // Variant
+    }
+
+    private void absoluteToRelativeTicks(final EntityDataHandlerEvent event, final EntityData data) {
+        final long currentGameTime = event.user().get(GameTimeStorage.class).gameTime();
+        final long angerEndTime = data.value();
+        final int angerEndIn = Math.toIntExact(angerEndTime - currentGameTime);
+        data.setTypeAndValue(VersionedTypes.V1_21_9.entityDataTypes.varIntType, Math.max(angerEndIn, 0));
+    }
+
+    @Override
+    public void onMappingDataLoaded() {
+        mapTypes();
+        mapEntityTypeWithData(EntityTypes1_21_11.NAUTILUS, EntityTypes1_21_11.SQUID).tagName();
+        mapEntityTypeWithData(EntityTypes1_21_11.ZOMBIE_NAUTILUS, EntityTypes1_21_11.GLOW_SQUID).tagName();
+        mapEntityTypeWithData(EntityTypes1_21_11.CAMEL_HUSK, EntityTypes1_21_11.CAMEL).tagName();
+        mapEntityTypeWithData(EntityTypes1_21_11.PARCHED, EntityTypes1_21_11.SKELETON).tagName();
+    }
+
+    @Override
+    public EntityType typeFromId(final int type) {
+        return EntityTypes1_21_11.getTypeFromId(type);
+    }
+}

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_11to1_21_9/storage/GameTimeStorage.java

@@ -0,0 +1,37 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * 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.v1_21_11to1_21_9.storage;
+
+import com.viaversion.viaversion.api.connection.StorableObject;
+
+public final class GameTimeStorage implements StorableObject {
+
+    private long gameTime;
+
+    public long gameTime() {
+        return gameTime;
+    }
+
+    public void setGameTime(final long gameTime) {
+        this.gameTime = gameTime;
+    }
+
+    public void incrementGameTime() {
+        gameTime++;
+    }
+}

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_2to1_21/Protocol1_21_2To1_21.java

@@ -29,6 +29,7 @@ import com.viaversion.viabackwards.protocol.v1_21_2to1_21.storage.InventoryState
 import com.viaversion.viabackwards.protocol.v1_21_2to1_21.storage.ItemTagStorage;
 import com.viaversion.viabackwards.protocol.v1_21_2to1_21.storage.PlayerStorage;
 import com.viaversion.viabackwards.protocol.v1_21_2to1_21.storage.RecipeStorage;
+import com.viaversion.viabackwards.protocol.v1_21_2to1_21.storage.SignStorage;
 import com.viaversion.viaversion.api.connection.UserConnection;
 import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_20_5;
 import com.viaversion.viaversion.api.minecraft.item.data.ChatType;
@@ -95,6 +96,7 @@ public final class Protocol1_21_2To1_21 extends BackwardsProtocol<ClientboundPac
         translatableRewriter.registerBossEvent(ClientboundPackets1_21_2.BOSS_EVENT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_21_2.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_21_2.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_13(ClientboundPackets1_21_2.SET_PLAYER_TEAM);
         translatableRewriter.registerPlayerCombatKill1_20(ClientboundPackets1_21_2.PLAYER_COMBAT_KILL);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_21_2.SYSTEM_CHAT);
         translatableRewriter.registerDisguisedChat(ClientboundPackets1_21_2.DISGUISED_CHAT);
@@ -159,6 +161,7 @@ public final class Protocol1_21_2To1_21 extends BackwardsProtocol<ClientboundPac
         user.put(new ItemTagStorage());
         user.put(new RecipeStorage(this));
         user.put(new PlayerStorage());
+        user.put(new SignStorage());
     }
 
     @Override

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_2to1_21/rewriter/BlockItemPacketRewriter1_21_2.java

@@ -26,12 +26,20 @@ import com.viaversion.viabackwards.api.rewriters.BackwardsStructuredItemRewriter
 import com.viaversion.viabackwards.protocol.v1_21_2to1_21.Protocol1_21_2To1_21;
 import com.viaversion.viabackwards.protocol.v1_21_2to1_21.storage.InventoryStateIdStorage;
 import com.viaversion.viabackwards.protocol.v1_21_2to1_21.storage.RecipeStorage;
+import com.viaversion.viabackwards.protocol.v1_21_2to1_21.storage.SignStorage;
 import com.viaversion.viaversion.api.connection.UserConnection;
 import com.viaversion.viaversion.api.data.MappingData;
+import com.viaversion.viaversion.api.data.entity.EntityTracker;
+import com.viaversion.viaversion.api.minecraft.BlockChangeRecord;
+import com.viaversion.viaversion.api.minecraft.BlockPosition;
 import com.viaversion.viaversion.api.minecraft.Holder;
 import com.viaversion.viaversion.api.minecraft.HolderSet;
 import com.viaversion.viaversion.api.minecraft.Particle;
 import com.viaversion.viaversion.api.minecraft.SoundEvent;
+import com.viaversion.viaversion.api.minecraft.chunks.Chunk;
+import com.viaversion.viaversion.api.minecraft.chunks.ChunkSection;
+import com.viaversion.viaversion.api.minecraft.chunks.DataPalette;
+import com.viaversion.viaversion.api.minecraft.chunks.PaletteType;
 import com.viaversion.viaversion.api.minecraft.data.StructuredDataContainer;
 import com.viaversion.viaversion.api.minecraft.data.StructuredDataKey;
 import com.viaversion.viaversion.api.minecraft.item.Item;
@@ -45,8 +53,10 @@ import com.viaversion.viaversion.api.minecraft.item.data.Instrument1_21_2;
 import com.viaversion.viaversion.api.minecraft.item.data.ItemModel;
 import com.viaversion.viaversion.api.minecraft.item.data.PotionEffect;
 import com.viaversion.viaversion.api.minecraft.item.data.PotionEffectData;
+import com.viaversion.viaversion.api.minecraft.item.data.Repairable;
 import com.viaversion.viaversion.api.minecraft.item.data.UseCooldown;
 import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
+import com.viaversion.viaversion.api.protocol.version.ProtocolVersion;
 import com.viaversion.viaversion.api.type.Types;
 import com.viaversion.viaversion.api.type.types.chunk.ChunkType1_20_2;
 import com.viaversion.viaversion.api.type.types.version.VersionedTypes;
@@ -74,10 +84,7 @@ public final class BlockItemPacketRewriter1_21_2 extends BackwardsStructuredItem
     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_20_2::new);
         blockRewriter.registerBlockEntityData(ClientboundPackets1_21_2.BLOCK_ENTITY_DATA);
 
         registerAdvancements1_20_3(ClientboundPackets1_21_2.UPDATE_ADVANCEMENTS);
@@ -85,6 +92,109 @@ public final class BlockItemPacketRewriter1_21_2 extends BackwardsStructuredItem
         registerMerchantOffers1_20_5(ClientboundPackets1_21_2.MERCHANT_OFFERS);
         registerSetCreativeModeSlot(ServerboundPackets1_20_5.SET_CREATIVE_MODE_SLOT);
 
+        protocol.registerClientbound(ClientboundPackets1_21_2.LEVEL_CHUNK_WITH_LIGHT, wrapper -> {
+            final Chunk chunk = blockRewriter.handleChunk1_19(wrapper, ChunkType1_20_2::new);
+            blockRewriter.handleBlockEntities(null, chunk, wrapper.user());
+
+            if (!wrapper.user().getProtocolInfo().protocolVersion().equalTo(ProtocolVersion.v1_21)) {
+                return;
+            }
+
+            final EntityTracker tracker = wrapper.user().getEntityTracker(Protocol1_21_2To1_21.class);
+
+            final SignStorage storage = wrapper.user().get(SignStorage.class);
+            storage.removeSigns(chunk.getX(), chunk.getZ());
+
+            for (int i = 0; i < chunk.getSections().length; i++) {
+                final ChunkSection section = chunk.getSections()[i];
+
+                final DataPalette blockPalette = section.palette(PaletteType.BLOCKS);
+
+                boolean containsSign = false;
+                for (int idx = 0; idx < blockPalette.size(); idx++) {
+                    if (signBlockState(blockPalette.idByIndex(idx))) {
+                        containsSign = true;
+                        break;
+                    }
+                }
+
+                if (!containsSign) {
+                    continue;
+                }
+
+                for (int idx = 0; idx < ChunkSection.SIZE; idx++) {
+                    if (!signBlockState(blockPalette.idAt(idx))) {
+                        continue;
+                    }
+
+                    storage.addSign(new BlockPosition(
+                        ChunkSection.xFromIndex(idx) + (chunk.getX() << 4),
+                        ChunkSection.yFromIndex(idx) + tracker.currentMinY() + (i << 4),
+                        ChunkSection.zFromIndex(idx) + (chunk.getZ() << 4)
+                    ));
+                }
+            }
+        });
+
+        protocol.registerClientbound(ClientboundPackets1_21_2.BLOCK_UPDATE, wrapper -> {
+            final BlockPosition position = wrapper.passthrough(Types.BLOCK_POSITION1_14);
+
+            final int blockId = wrapper.read(Types.VAR_INT);
+            final int mappedBlockId = protocol.getMappingData().getNewBlockStateId(blockId);
+            wrapper.write(Types.VAR_INT, mappedBlockId);
+
+            if (!wrapper.user().getProtocolInfo().protocolVersion().equalTo(ProtocolVersion.v1_21)) {
+                return;
+            }
+
+            final SignStorage storage = wrapper.user().get(SignStorage.class);
+            storage.removeSign(position);
+            if (signBlockState(mappedBlockId)) {
+                storage.addSign(position);
+            }
+        });
+
+        protocol.registerClientbound(ClientboundPackets1_21_2.SECTION_BLOCKS_UPDATE, wrapper -> {
+            final long position = wrapper.passthrough(Types.LONG);
+
+            final int chunkX = (int) (position >> 42);
+            final int chunkY = (int) (position << 44 >> 44);
+            final int chunkZ = (int) (position << 22 >> 42);
+
+            final SignStorage signStorage = wrapper.user().get(SignStorage.class);
+
+            final boolean equalToV1_21 = wrapper.user().getProtocolInfo().protocolVersion().equalTo(ProtocolVersion.v1_21);
+
+            for (final BlockChangeRecord record : wrapper.passthrough(Types.VAR_LONG_BLOCK_CHANGE_ARRAY)) {
+                record.setBlockId(protocol.getMappingData().getNewBlockStateId(record.getBlockId()));
+
+                if (!equalToV1_21) {
+                    continue;
+                }
+
+                final int x = record.getSectionX() + (chunkX << 4);
+                final int y = record.getSectionY() + (chunkY << 4);
+                final int z = record.getSectionZ() + (chunkZ << 4);
+                final BlockPosition pos = new BlockPosition(x, y, z);
+                if (signBlockState(record.getBlockId())) {
+                    signStorage.addSign(pos);
+                } else {
+                    signStorage.removeSign(pos);
+                }
+            }
+        });
+
+        protocol.registerClientbound(ClientboundPackets1_21_2.OPEN_SIGN_EDITOR, wrapper -> {
+            if (!wrapper.user().getProtocolInfo().protocolVersion().equalTo(ProtocolVersion.v1_21)) {
+                return;
+            }
+
+            final BlockPosition position = wrapper.passthrough(Types.BLOCK_POSITION1_14);
+            if (!wrapper.user().get(SignStorage.class).isSign(position)) {
+                wrapper.cancel();
+            }
+        });
+
         protocol.registerClientbound(ClientboundPackets1_21_2.COOLDOWN, wrapper -> {
             final MappingData mappingData = protocol.getMappingData();
             final String itemIdentifier = wrapper.read(Types.STRING);
@@ -296,6 +406,10 @@ public final class BlockItemPacketRewriter1_21_2 extends BackwardsStructuredItem
         wrapper.write(Types.VAR_INT, (int) containerId);
     }
 
+    private boolean signBlockState(final int blockStateId) {
+        return (blockStateId >= 4302 && blockStateId <= 4589) || (blockStateId >= 4762 && blockStateId <= 5625);
+    }
+
     @Override
     public Item handleItemToClient(final UserConnection connection, Item item) {
         backupInconvertibleData(item);
@@ -348,9 +462,9 @@ public final class BlockItemPacketRewriter1_21_2 extends BackwardsStructuredItem
             backupTag.put("instrument_description", instrument.value().description());
         }
 
-        final HolderSet repairable = data.get(StructuredDataKey.REPAIRABLE);
+        final Repairable repairable = data.get(StructuredDataKey.REPAIRABLE);
         if (repairable != null) {
-            backupTag.put("repairable", holderSetToTag(repairable));
+            backupTag.put("repairable", holderSetToTag(repairable.items()));
         }
 
         final Enchantable enchantable = data.get(StructuredDataKey.ENCHANTABLE);
@@ -523,7 +637,7 @@ public final class BlockItemPacketRewriter1_21_2 extends BackwardsStructuredItem
         }
 
         if (backupTag.contains("repairable")) {
-            data.set(StructuredDataKey.REPAIRABLE, restoreHolderSet(backupTag, "repairable"));
+            data.set(StructuredDataKey.REPAIRABLE, new Repairable(restoreHolderSet(backupTag, "repairable")));
         }
 
         final IntTag enchantable = backupTag.getIntTag("enchantable");

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_2to1_21/rewriter/ComponentRewriter1_21_2.java

@@ -57,7 +57,7 @@ public final class ComponentRewriter1_21_2 extends JsonNBTComponentRewriter<Clie
         }
 
         removeDataComponents(componentsTag, BlockItemPacketRewriter1_21_2.NEW_DATA_TO_REMOVE);
-        removeDataComponents(componentsTag, StructuredDataKey.DAMAGE_RESISTANT, StructuredDataKey.LOCK); // No point in updating these
+        removeDataComponents(componentsTag, StructuredDataKey.DAMAGE_RESISTANT, StructuredDataKey.LOCK1_21_2); // No point in updating these
     }
 
     @Override

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_2to1_21/rewriter/EntityPacketRewriter1_21_2.java

@@ -27,6 +27,8 @@ import com.viaversion.viabackwards.api.rewriters.BackwardsRegistryRewriter;
 import com.viaversion.viabackwards.api.rewriters.EntityRewriter;
 import com.viaversion.viabackwards.protocol.v1_21_2to1_21.Protocol1_21_2To1_21;
 import com.viaversion.viabackwards.protocol.v1_21_2to1_21.storage.PlayerStorage;
+import com.viaversion.viabackwards.protocol.v1_21_2to1_21.storage.SignStorage;
+import com.viaversion.viaversion.api.data.entity.EntityTracker;
 import com.viaversion.viaversion.api.minecraft.Holder;
 import com.viaversion.viaversion.api.minecraft.Particle;
 import com.viaversion.viaversion.api.minecraft.RegistryEntry;
@@ -173,6 +175,11 @@ public final class EntityPacketRewriter1_21_2 extends EntityRewriter<Clientbound
             wrapper.passthrough(Types.VAR_INT); // Portal cooldown
 
             wrapper.read(Types.VAR_INT); // Sea level
+
+            final EntityTracker tracker = tracker(wrapper.user());
+            if (tracker.currentWorld() != null && !tracker.currentWorld().equals(world)) {
+                wrapper.user().put(new SignStorage());
+            }
             trackWorldDataByKey1_20_5(wrapper.user(), dimensionId, world);
         });
 

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_2to1_21/storage/SignStorage.java

@@ -0,0 +1,45 @@
+/*
+ * 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.v1_21_2to1_21.storage;
+
+import com.viaversion.viaversion.api.connection.StorableObject;
+import com.viaversion.viaversion.api.minecraft.BlockPosition;
+import java.util.HashSet;
+import java.util.Set;
+
+public final class SignStorage implements StorableObject {
+
+    private final Set<BlockPosition> signs = new HashSet<>();
+
+    public void addSign(final BlockPosition position) {
+        signs.add(position);
+    }
+
+    public boolean isSign(final BlockPosition position) {
+        return signs.contains(position);
+    }
+
+    public void removeSign(final BlockPosition position) {
+        signs.remove(position);
+    }
+
+    public void removeSigns(final int chunkX, final int chunkZ) {
+        signs.removeIf(pos -> pos.x() >> 4 == chunkX && pos.z() >> 4 == chunkZ);
+    }
+
+}

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_4to1_21_2/Protocol1_21_4To1_21_2.java

@@ -89,6 +89,7 @@ public final class Protocol1_21_4To1_21_2 extends BackwardsProtocol<ClientboundP
         translatableRewriter.registerBossEvent(ClientboundPackets1_21_2.BOSS_EVENT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_21_2.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_21_2.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_13(ClientboundPackets1_21_2.SET_PLAYER_TEAM);
         translatableRewriter.registerPlayerCombatKill1_20(ClientboundPackets1_21_2.PLAYER_COMBAT_KILL);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_21_2.SYSTEM_CHAT);
         translatableRewriter.registerDisguisedChat(ClientboundPackets1_21_2.DISGUISED_CHAT);

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_5to1_21_4/Protocol1_21_5To1_21_4.java

@@ -23,6 +23,7 @@ import com.viaversion.viabackwards.api.rewriters.SoundRewriter;
 import com.viaversion.viabackwards.protocol.v1_21_5to1_21_4.rewriter.BlockItemPacketRewriter1_21_5;
 import com.viaversion.viabackwards.protocol.v1_21_5to1_21_4.rewriter.ComponentRewriter1_21_5;
 import com.viaversion.viabackwards.protocol.v1_21_5to1_21_4.rewriter.EntityPacketRewriter1_21_5;
+import com.viaversion.viabackwards.protocol.v1_21_5to1_21_4.rewriter.RegistryDataRewriter1_21_5;
 import com.viaversion.viabackwards.protocol.v1_21_5to1_21_4.storage.HashedItemConverterStorage;
 import com.viaversion.viaversion.api.connection.UserConnection;
 import com.viaversion.viaversion.api.minecraft.Particle;
@@ -52,6 +53,7 @@ import com.viaversion.viaversion.protocols.v1_21_4to1_21_5.packet.ServerboundPac
 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.RegistryDataRewriter;
 import com.viaversion.viaversion.rewriter.StatisticsRewriter;
 import com.viaversion.viaversion.rewriter.TagRewriter;
 import com.viaversion.viaversion.util.Key;
@@ -75,6 +77,7 @@ public final class Protocol1_21_5To1_21_4 extends BackwardsProtocol<ClientboundP
     };
     private final ComponentRewriter1_21_5 translatableRewriter = new ComponentRewriter1_21_5(this);
     private final TagRewriter<ClientboundPacket1_21_5> tagRewriter = new TagRewriter<>(this);
+    private final RegistryDataRewriter registryDataRewriter = new RegistryDataRewriter1_21_5(this);
 
     public Protocol1_21_5To1_21_4() {
         super(ClientboundPacket1_21_5.class, ClientboundPacket1_21_2.class, ServerboundPacket1_21_5.class, ServerboundPacket1_21_4.class);
@@ -84,6 +87,8 @@ public final class Protocol1_21_5To1_21_4 extends BackwardsProtocol<ClientboundP
     protected void registerPackets() {
         super.registerPackets();
 
+        registerClientbound(ClientboundConfigurationPackets1_21.REGISTRY_DATA, registryDataRewriter::handle);
+
         tagRewriter.registerGeneric(ClientboundPackets1_21_5.UPDATE_TAGS);
         tagRewriter.registerGeneric(ClientboundConfigurationPackets1_21.UPDATE_TAGS);
 
@@ -204,6 +209,11 @@ public final class Protocol1_21_5To1_21_4 extends BackwardsProtocol<ClientboundP
         return itemRewriter;
     }
 
+    @Override
+    public RegistryDataRewriter getRegistryDataRewriter() {
+        return registryDataRewriter;
+    }
+
     @Override
     public ParticleRewriter<ClientboundPacket1_21_5> getParticleRewriter() {
         return particleRewriter;

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_5to1_21_4/rewriter/BlockItemPacketRewriter1_21_5.java

@@ -67,7 +67,9 @@ import com.viaversion.viaversion.api.type.types.chunk.ChunkType1_20_2;
 import com.viaversion.viaversion.api.type.types.chunk.ChunkType1_21_5;
 import com.viaversion.viaversion.api.type.types.version.VersionedTypes;
 import com.viaversion.viaversion.data.item.ItemHasherBase;
+import com.viaversion.viaversion.libs.fastutil.ints.IntArrayList;
 import com.viaversion.viaversion.libs.fastutil.ints.IntLinkedOpenHashSet;
+import com.viaversion.viaversion.libs.fastutil.ints.IntList;
 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.packet.ClientboundPacket1_21_5;
@@ -78,7 +80,6 @@ import com.viaversion.viaversion.rewriter.RecipeDisplayRewriter;
 import com.viaversion.viaversion.util.Either;
 import com.viaversion.viaversion.util.Key;
 import com.viaversion.viaversion.util.Limit;
-import com.viaversion.viaversion.util.SerializerVersion;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
@@ -182,20 +183,37 @@ public final class BlockItemPacketRewriter1_21_5 extends BackwardsStructuredItem
         protocol.registerClientbound(ClientboundPackets1_21_5.SET_EQUIPMENT, wrapper -> {
             final int entityId = wrapper.passthrough(Types.VAR_INT);
             final TrackedEntity trackedEntity = protocol.getEntityRewriter().tracker(wrapper.user()).entity(entityId);
+
+            // Remove saddle equipment, keep the rest
+            final IntList keptSlots = new IntArrayList();
+            final List<Item> keptItems = new ArrayList<>();
             byte value;
             do {
-                value = wrapper.passthrough(Types.BYTE);
+                value = wrapper.read(Types.BYTE);
                 final int equipmentSlot = value & 0x7F;
+                final Item item = wrapper.read(itemType());
                 if (equipmentSlot == SADDLE_EQUIPMENT_SLOT) {
+                    // Send saddle entity data for horses
                     if (trackedEntity != null && trackedEntity.entityType().isOrHasParent(EntityTypes1_21_5.ABSTRACT_HORSE)) {
-                        final Item item = wrapper.read(itemType());
                         sendSaddledEntityData(wrapper.user(), trackedEntity, entityId, item.identifier() == 800);
                     }
-                    wrapper.cancel();
-                    return;
+                } else {
+                    keptSlots.add(equipmentSlot);
+                    keptItems.add(handleItemToClient(wrapper.user(), item));
                 }
-                passthroughClientboundItem(wrapper);
             } while (value < 0);
+
+            if (keptSlots.isEmpty()) {
+                wrapper.cancel();
+                return;
+            }
+
+            for (int i = 0; i < keptSlots.size(); i++) {
+                final int slot = keptSlots.getInt(i);
+                final boolean more = i < keptSlots.size() - 1;
+                wrapper.write(Types.BYTE, (byte) (more ? (slot | -128) : slot));
+                wrapper.write(mappedItemType(), keptItems.get(i));
+            }
         });
 
         protocol.registerClientbound(ClientboundPackets1_21_5.UPDATE_ADVANCEMENTS, wrapper -> {

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_5to1_21_4/rewriter/ComponentRewriter1_21_5.java

@@ -172,12 +172,14 @@ public final class ComponentRewriter1_21_5 extends NBTComponentRewriter<Clientbo
         handleAdventureModePredicate(componentsTag, "can_break", hiddenComponents);
         handleEnchantments(componentsTag, "enchantments", hiddenComponents);
         handleEnchantments(componentsTag, "stored_enchantments", hiddenComponents);
+
+        removeDataComponents(componentsTag, StructuredDataKey.INSTRUMENT1_21_5, StructuredDataKey.JUKEBOX_PLAYABLE1_21_5);
     }
 
     private void updateShowInTooltip(final CompoundTag tag, final String key, final Set<String> hiddenComponents) {
         final CompoundTag data = getNamespacedCompoundTag(tag, key);
         if (data != null) {
-            data.putBoolean("show_in_tooltip", hiddenComponents.contains(key));
+            data.putBoolean("show_in_tooltip", !hiddenComponents.contains(key));
         }
     }
 
@@ -190,7 +192,7 @@ public final class ComponentRewriter1_21_5 extends NBTComponentRewriter<Clientbo
         removeDataComponents(componentsTag, key);
         final CompoundTag predicate = new CompoundTag();
         predicate.put("predicates", blockPredicates);
-        predicate.putBoolean("show_in_tooltip", hiddenComponents.contains(key));
+        predicate.putBoolean("show_in_tooltip", !hiddenComponents.contains(key));
         componentsTag.put(key, predicate);
     }
 
@@ -200,7 +202,7 @@ public final class ComponentRewriter1_21_5 extends NBTComponentRewriter<Clientbo
             removeNamespaced(componentsTag, key);
             final CompoundTag enchantments = new CompoundTag();
             enchantments.put("levels", levels);
-            enchantments.putBoolean("show_in_tooltip", hiddenComponents.contains(key));
+            enchantments.putBoolean("show_in_tooltip", !hiddenComponents.contains(key));
             componentsTag.put(key, enchantments);
         }
     }

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_5to1_21_4/rewriter/EntityPacketRewriter1_21_5.java

@@ -17,18 +17,11 @@
  */
 package com.viaversion.viabackwards.protocol.v1_21_5to1_21_4.rewriter;
 
-import com.viaversion.nbt.tag.CompoundTag;
-import com.viaversion.nbt.tag.ListTag;
-import com.viaversion.nbt.tag.StringTag;
-import com.viaversion.viabackwards.api.rewriters.BackwardsRegistryRewriter;
 import com.viaversion.viabackwards.api.rewriters.EntityRewriter;
 import com.viaversion.viabackwards.protocol.v1_21_5to1_21_4.Protocol1_21_5To1_21_4;
-import com.viaversion.viabackwards.protocol.v1_21_5to1_21_4.storage.HashedItemConverterStorage;
 import com.viaversion.viabackwards.protocol.v1_21_5to1_21_4.storage.HorseDataStorage;
-import com.viaversion.viaversion.api.connection.UserConnection;
 import com.viaversion.viaversion.api.data.entity.TrackedEntity;
 import com.viaversion.viaversion.api.minecraft.Holder;
-import com.viaversion.viaversion.api.minecraft.RegistryEntry;
 import com.viaversion.viaversion.api.minecraft.WolfVariant;
 import com.viaversion.viaversion.api.minecraft.entities.EntityType;
 import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_21_5;
@@ -38,22 +31,13 @@ import com.viaversion.viaversion.api.minecraft.entitydata.types.EntityDataTypes1
 import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
 import com.viaversion.viaversion.api.type.Types;
 import com.viaversion.viaversion.api.type.types.version.VersionedTypes;
-import com.viaversion.viaversion.protocols.v1_20_5to1_21.packet.ClientboundConfigurationPackets1_21;
 import com.viaversion.viaversion.protocols.v1_21_4to1_21_5.packet.ClientboundPacket1_21_5;
 import com.viaversion.viaversion.protocols.v1_21_4to1_21_5.packet.ClientboundPackets1_21_5;
 import com.viaversion.viaversion.protocols.v1_21to1_21_2.packet.ClientboundPackets1_21_2;
-import com.viaversion.viaversion.rewriter.RegistryDataRewriter;
-import com.viaversion.viaversion.util.Key;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Set;
 import java.util.UUID;
 
 public final class EntityPacketRewriter1_21_5 extends EntityRewriter<ClientboundPacket1_21_5, Protocol1_21_5To1_21_4> {
 
-    private static final Set<String> NEW_REGISTRIES = Set.of("pig_variant", "cow_variant", "frog_variant", "cat_variant",
-        "chicken_variant", "test_environment", "test_instance", "wolf_sound_variant");
-
     public EntityPacketRewriter1_21_5(final Protocol1_21_5To1_21_4 protocol) {
         super(protocol, protocol.mappedTypes().entityDataTypes().optionalComponentType, protocol.mappedTypes().entityDataTypes().booleanType);
     }
@@ -112,69 +96,6 @@ public final class EntityPacketRewriter1_21_5 extends EntityRewriter<Clientbound
             }
         });
 
-        final RegistryDataRewriter registryDataRewriter = new BackwardsRegistryRewriter(protocol) {
-            @Override
-            public RegistryEntry[] handle(final UserConnection connection, final String key, final RegistryEntry[] entries) {
-                final boolean trimPatternRegistry = key.equals("trim_pattern");
-                if (trimPatternRegistry || key.equals("trim_material")) {
-                    updateTrim(entries, trimPatternRegistry ? "template_item" : "ingredient");
-                    return super.handle(connection, key, entries);
-                }
-
-                if (key.equals("enchantment")) {
-                    updateEnchantment(entries);
-                    return super.handle(connection, key, entries);
-                }
-
-                if (!key.equals("wolf_variant")) {
-                    return super.handle(connection, key, entries);
-                }
-
-                for (final RegistryEntry entry : entries) {
-                    if (entry.tag() == null) {
-                        continue;
-                    }
-
-                    final CompoundTag variant = (CompoundTag) entry.tag();
-                    final CompoundTag assets = (CompoundTag) variant.remove("assets");
-                    variant.put("wild_texture", assets.get("wild"));
-                    variant.put("tame_texture", assets.get("tame"));
-                    variant.put("angry_texture", assets.get("angry"));
-                    variant.put("biomes", new ListTag<>(StringTag.class));
-                }
-                return entries;
-            }
-
-            private void updateTrim(final RegistryEntry[] entries, final String itemKey) {
-                for (final RegistryEntry entry : entries) {
-                    if (entry.tag() == null) {
-                        continue;
-                    }
-
-                    final CompoundTag tag = (CompoundTag) entry.tag();
-                    tag.putString(itemKey, "stone"); // dummy ingredient
-                }
-            }
-        };
-        protocol.registerClientbound(ClientboundConfigurationPackets1_21.REGISTRY_DATA, wrapper -> {
-            final String registryKey = Key.stripMinecraftNamespace(wrapper.passthrough(Types.STRING));
-            if (NEW_REGISTRIES.contains(registryKey)) {
-                wrapper.cancel();
-                return;
-            }
-
-            final RegistryEntry[] entries = wrapper.read(Types.REGISTRY_ENTRY_ARRAY);
-            if (registryKey.equals("enchantment")) {
-                final List<String> identifiers = new ArrayList<>(entries.length);
-                for (final RegistryEntry entry : entries) {
-                    identifiers.add(entry.key());
-                }
-                wrapper.user().get(HashedItemConverterStorage.class).setEnchantments(identifiers);
-            }
-
-            wrapper.write(Types.REGISTRY_ENTRY_ARRAY, registryDataRewriter.handle(wrapper.user(), registryKey, entries));
-        });
-
         protocol.registerClientbound(ClientboundPackets1_21_5.LOGIN, wrapper -> {
             final int entityId = wrapper.passthrough(Types.INT); // Entity id
             wrapper.passthrough(Types.BOOLEAN); // Hardcore
@@ -201,7 +122,7 @@ public final class EntityPacketRewriter1_21_5 extends EntityRewriter<Clientbound
             wrapper.passthrough(Types.STRING); // Team Name
             final byte action = wrapper.passthrough(Types.BYTE); // Mode
             if (action == 0 || action == 2) {
-                wrapper.passthrough(Types.TAG); // Display Name
+                protocol.getComponentRewriter().passthroughAndProcess(wrapper); // Display name
                 wrapper.passthrough(Types.BYTE); // Flags
 
                 final int nametagVisibility = wrapper.read(Types.VAR_INT);
@@ -210,26 +131,12 @@ public final class EntityPacketRewriter1_21_5 extends EntityRewriter<Clientbound
                 wrapper.write(Types.STRING, collision(collisionRule));
 
                 wrapper.passthrough(Types.VAR_INT); // Color
-                wrapper.passthrough(Types.TAG); // Prefix
-                wrapper.passthrough(Types.TAG); // Suffix
+                protocol.getComponentRewriter().passthroughAndProcess(wrapper); // Prefix
+                protocol.getComponentRewriter().passthroughAndProcess(wrapper); // Suffix
             }
         });
     }
 
-    private void updateEnchantment(final RegistryEntry[] entries) {
-        for (final RegistryEntry entry : entries) {
-            if (entry.tag() == null) {
-                continue;
-            }
-
-            final CompoundTag enchantment = (CompoundTag) entry.tag();
-            final ListTag<StringTag> slots = enchantment.getListTag("slots", StringTag.class);
-            if (slots != null) {
-                slots.getValue().removeIf(tag -> tag.getValue().equals("saddle")); // Remove saddle slot
-            }
-        }
-    }
-
     private String visibility(final int id) {
         return switch (id) {
             case 0 -> "always";

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_5to1_21_4/rewriter/RegistryDataRewriter1_21_5.java

@@ -0,0 +1,97 @@
+/*
+ * 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.v1_21_5to1_21_4.rewriter;
+
+import com.viaversion.nbt.tag.CompoundTag;
+import com.viaversion.nbt.tag.ListTag;
+import com.viaversion.nbt.tag.StringTag;
+import com.viaversion.viabackwards.api.BackwardsProtocol;
+import com.viaversion.viabackwards.api.rewriters.BackwardsRegistryRewriter;
+import com.viaversion.viaversion.api.connection.UserConnection;
+import com.viaversion.viaversion.api.minecraft.RegistryEntry;
+import java.util.List;
+
+public final class RegistryDataRewriter1_21_5 extends BackwardsRegistryRewriter {
+
+    public RegistryDataRewriter1_21_5(final BackwardsProtocol<?, ?, ?, ?> protocol) {
+        super(protocol);
+
+        final List<String> newRegistries = List.of("pig_variant", "cow_variant", "frog_variant", "cat_variant",
+            "chicken_variant", "test_environment", "test_instance", "wolf_sound_variant");
+        for (final String registry : newRegistries) {
+            remove(registry);
+        }
+    }
+
+    @Override
+    public RegistryEntry[] handle(final UserConnection connection, final String key, final RegistryEntry[] entries) {
+        final boolean trimPatternRegistry = key.equals("trim_pattern");
+        if (trimPatternRegistry || key.equals("trim_material")) {
+            updateTrim(entries, trimPatternRegistry ? "template_item" : "ingredient");
+            return super.handle(connection, key, entries);
+        }
+
+        if (key.equals("enchantment")) {
+            updateEnchantment(entries);
+            return super.handle(connection, key, entries);
+        }
+
+        if (!key.equals("wolf_variant")) {
+            return super.handle(connection, key, entries);
+        }
+
+        for (final RegistryEntry entry : entries) {
+            if (entry.tag() == null) {
+                continue;
+            }
+
+            final CompoundTag variant = (CompoundTag) entry.tag();
+            final CompoundTag assets = (CompoundTag) variant.remove("assets");
+            variant.put("wild_texture", assets.get("wild"));
+            variant.put("tame_texture", assets.get("tame"));
+            variant.put("angry_texture", assets.get("angry"));
+            variant.put("biomes", new ListTag<>(StringTag.class));
+        }
+        return entries;
+    }
+
+    private void updateTrim(final RegistryEntry[] entries, final String itemKey) {
+        for (final RegistryEntry entry : entries) {
+            if (entry.tag() == null) {
+                continue;
+            }
+
+            final CompoundTag tag = (CompoundTag) entry.tag();
+            tag.putString(itemKey, "stone"); // dummy ingredient
+        }
+    }
+
+    private void updateEnchantment(final RegistryEntry[] entries) {
+        for (final RegistryEntry entry : entries) {
+            if (entry.tag() == null) {
+                continue;
+            }
+
+            final CompoundTag enchantment = (CompoundTag) entry.tag();
+            final ListTag<StringTag> slots = enchantment.getListTag("slots", StringTag.class);
+            if (slots != null) {
+                slots.getValue().removeIf(tag -> tag.getValue().equals("saddle")); // Remove saddle slot
+            }
+        }
+    }
+}

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_5to1_21_4/storage/HashedItemConverterStorage.java

@@ -25,25 +25,17 @@ import com.viaversion.viaversion.api.protocol.Protocol;
 import com.viaversion.viaversion.codec.CodecRegistryContext;
 import com.viaversion.viaversion.codec.hash.HashFunction;
 import com.viaversion.viaversion.codec.hash.HashOps;
-import java.util.ArrayList;
-import java.util.List;
 
 public class HashedItemConverterStorage implements StorableObject {
 
-    private final List<String> enchantments = new ArrayList<>();
     private final Hasher hasher;
 
     public HashedItemConverterStorage(final Protocol<?, ?, ?, ?> protocol) {
-        final RegistryAccess registryAccess = RegistryAccess.of(this.enchantments, protocol.getMappingData());
+        final RegistryAccess registryAccess = RegistryAccess.of(protocol);
         final CodecContext context = new CodecRegistryContext(protocol, registryAccess, false);
         this.hasher = new HashOps(context, HashFunction.CRC32C);
     }
 
-    public void setEnchantments(final List<String> enchantments) {
-        this.enchantments.clear();
-        this.enchantments.addAll(enchantments);
-    }
-
     public Hasher hasher() {
         return hasher; // reusable
     }

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_6to1_21_5/Protocol1_21_6To1_21_5.java

@@ -19,6 +19,7 @@ package com.viaversion.viabackwards.protocol.v1_21_6to1_21_5;
 
 import com.viaversion.nbt.tag.CompoundTag;
 import com.viaversion.nbt.tag.Tag;
+import com.viaversion.viabackwards.ViaBackwards;
 import com.viaversion.viabackwards.api.BackwardsProtocol;
 import com.viaversion.viabackwards.api.data.BackwardsMappingData;
 import com.viaversion.viabackwards.api.rewriters.SoundRewriter;
@@ -29,6 +30,7 @@ import com.viaversion.viabackwards.protocol.v1_21_6to1_21_5.provider.DialogViewP
 import com.viaversion.viabackwards.protocol.v1_21_6to1_21_5.rewriter.BlockItemPacketRewriter1_21_6;
 import com.viaversion.viabackwards.protocol.v1_21_6to1_21_5.rewriter.ComponentRewriter1_21_6;
 import com.viaversion.viabackwards.protocol.v1_21_6to1_21_5.rewriter.EntityPacketRewriter1_21_6;
+import com.viaversion.viabackwards.protocol.v1_21_6to1_21_5.rewriter.RegistryDataRewriter1_21_6;
 import com.viaversion.viabackwards.protocol.v1_21_6to1_21_5.storage.ChestDialogStorage;
 import com.viaversion.viabackwards.protocol.v1_21_6to1_21_5.storage.ClickEvents;
 import com.viaversion.viabackwards.protocol.v1_21_6to1_21_5.storage.RegistryAndTags;
@@ -61,6 +63,7 @@ import com.viaversion.viaversion.protocols.v1_21_5to1_21_6.packet.ServerboundPac
 import com.viaversion.viaversion.protocols.v1_21_5to1_21_6.packet.ServerboundPackets1_21_6;
 import com.viaversion.viaversion.rewriter.AttributeRewriter;
 import com.viaversion.viaversion.rewriter.ParticleRewriter;
+import com.viaversion.viaversion.rewriter.RegistryDataRewriter;
 import com.viaversion.viaversion.rewriter.StatisticsRewriter;
 import com.viaversion.viaversion.rewriter.TagRewriter;
 import com.viaversion.viaversion.util.Key;
@@ -75,6 +78,7 @@ public final class Protocol1_21_6To1_21_5 extends BackwardsProtocol<ClientboundP
     private final ParticleRewriter<ClientboundPacket1_21_6> particleRewriter = new ParticleRewriter<>(this);
     private final NBTComponentRewriter<ClientboundPacket1_21_6> translatableRewriter = new ComponentRewriter1_21_6(this);
     private final TagRewriter<ClientboundPacket1_21_6> tagRewriter = new TagRewriter<>(this);
+    private final RegistryDataRewriter registryDataRewriter = new RegistryDataRewriter1_21_6(this);
 
     public Protocol1_21_6To1_21_5() {
         super(ClientboundPacket1_21_6.class, ClientboundPacket1_21_5.class, ServerboundPacket1_21_6.class, ServerboundPacket1_21_5.class);
@@ -84,6 +88,8 @@ public final class Protocol1_21_6To1_21_5 extends BackwardsProtocol<ClientboundP
     protected void registerPackets() {
         super.registerPackets();
 
+        registerClientbound(ClientboundConfigurationPackets1_21_6.REGISTRY_DATA, registryDataRewriter::handle);
+
         registerClientbound(ClientboundPackets1_21_6.UPDATE_TAGS, this::updateTags);
         registerClientbound(ClientboundConfigurationPackets1_21_6.UPDATE_TAGS, this::updateTags);
 
@@ -126,6 +132,7 @@ public final class Protocol1_21_6To1_21_5 extends BackwardsProtocol<ClientboundP
         translatableRewriter.registerBossEvent(ClientboundPackets1_21_6.BOSS_EVENT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_21_6.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_21_6.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_21_5(ClientboundPackets1_21_6.SET_PLAYER_TEAM);
         translatableRewriter.registerPlayerCombatKill1_20(ClientboundPackets1_21_6.PLAYER_COMBAT_KILL);
         translatableRewriter.registerPlayerInfoUpdate1_21_4(ClientboundPackets1_21_6.PLAYER_INFO_UPDATE);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_21_6.SYSTEM_CHAT);
@@ -144,10 +151,15 @@ public final class Protocol1_21_6To1_21_5 extends BackwardsProtocol<ClientboundP
             final short difficulty = wrapper.read(Types.UNSIGNED_BYTE);
             wrapper.write(Types.VAR_INT, (int) difficulty);
         });
+        registerServerbound(ServerboundPackets1_21_5.CHAT_COMMAND, this::handleClickEvents);
+        registerServerbound(ServerboundPackets1_21_5.CHAT_COMMAND_SIGNED, this::handleClickEvents);
 
         // Are you sure you want to see this? This is your last chance to turn back.
         registerClientbound(ClientboundPackets1_21_6.SHOW_DIALOG, null, wrapper -> {
             wrapper.cancel();
+            if (!ViaBackwards.getConfig().dialogsViaChests()) {
+                return;
+            }
 
             final RegistryAndTags registryAndTags = wrapper.user().get(RegistryAndTags.class);
             final ServerLinks serverLinks = wrapper.user().get(ServerLinks.class);
@@ -164,6 +176,9 @@ public final class Protocol1_21_6To1_21_5 extends BackwardsProtocol<ClientboundP
         });
         registerClientbound(ClientboundConfigurationPackets1_21_6.SHOW_DIALOG, null, wrapper -> {
             wrapper.cancel();
+            if (!ViaBackwards.getConfig().dialogsViaChests()) {
+                return;
+            }
 
             final RegistryAndTags registryAndTags = wrapper.user().get(RegistryAndTags.class);
             final ServerLinks serverLinks = wrapper.user().get(ServerLinks.class);
@@ -178,9 +193,6 @@ public final class Protocol1_21_6To1_21_5 extends BackwardsProtocol<ClientboundP
         registerClientbound(ClientboundPackets1_21_6.SERVER_LINKS, this::storeServerLinks);
         registerClientbound(ClientboundConfigurationPackets1_21_6.SERVER_LINKS, this::storeServerLinks);
 
-        registerServerbound(ServerboundPackets1_21_5.CHAT_COMMAND, this::handleClickEvents);
-        registerServerbound(ServerboundPackets1_21_5.CHAT_COMMAND_SIGNED, this::handleClickEvents);
-
         // The ones below are specific to the chest dialog view provider
         registerServerbound(ServerboundPackets1_21_5.CONTAINER_CLOSE, wrapper -> {
             final ChestDialogStorage storage = wrapper.user().get(ChestDialogStorage.class);
@@ -285,6 +297,10 @@ public final class Protocol1_21_6To1_21_5 extends BackwardsProtocol<ClientboundP
 
     private void clearDialog(final PacketWrapper wrapper) {
         wrapper.cancel();
+        if (!ViaBackwards.getConfig().dialogsViaChests()) {
+            return;
+        }
+
         final DialogViewProvider provider = Via.getManager().getProviders().get(DialogViewProvider.class);
         provider.closeDialog(wrapper.user());
     }
@@ -343,6 +359,11 @@ public final class Protocol1_21_6To1_21_5 extends BackwardsProtocol<ClientboundP
         return itemRewriter;
     }
 
+    @Override
+    public RegistryDataRewriter getRegistryDataRewriter() {
+        return registryDataRewriter;
+    }
+
     @Override
     public ParticleRewriter<ClientboundPacket1_21_6> getParticleRewriter() {
         return particleRewriter;

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_6to1_21_5/data/Button.java

@@ -74,7 +74,7 @@ public class Button implements Widget {
 
         for (final String event : CLICK_EVENTS) {
             if (Key.stripMinecraftNamespace(type).equals(event)) {
-                clickEvent = actionTag;
+                clickEvent = actionTag.copy();
                 clickEvent.put("action", clickEvent.remove("type"));
                 return;
             }

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_6to1_21_5/data/Dialog.java

@@ -132,7 +132,7 @@ public final class Dialog implements Widget {
 
     private void fillNoticeDialog(final CompoundTag tag) {
         final CompoundTag actionTag = tag.getCompoundTag("action");
-        actionButton = actionTag == null ? Button.DEFAULT : actionButton;
+        actionButton = actionTag == null ? Button.DEFAULT : new Button(this, actionTag);
     }
 
     private void fillServerLinksDialog(final ServerLinks serverLinks, final CompoundTag tag) {
@@ -150,7 +150,7 @@ public final class Dialog implements Widget {
     }
 
     private void fillDialogList(final RegistryAndTags registryAndTags, final ServerLinks serverLinks, final CompoundTag tag) {
-        // Hold them as either a list of inlined, a singleton inlined, a registry entry or a tag.
+        // Hold them as either a list of inlined / singleton inlined, a list of registry entries / singleton entry or a tag.
         ListTag<CompoundTag> dialogsTag = tag.getListTag("dialogs", CompoundTag.class);
         if (dialogsTag == null) {
             CompoundTag dialogTag = tag.getCompoundTag("dialogs");
@@ -159,16 +159,23 @@ public final class Dialog implements Widget {
                 dialogsTag.add(dialogTag);
             }
 
+            ListTag<StringTag> registryDialogsTag = tag.getListTag("dialogs", StringTag.class);
             StringTag registryDialogTag = tag.getStringTag("dialogs");
             if (registryDialogTag != null) {
+                registryDialogsTag = new ListTag<>(StringTag.class);
+                registryDialogsTag.add(registryDialogTag);
+            }
+            if (registryDialogsTag != null) {
                 dialogsTag = new ListTag<>(CompoundTag.class);
-                final String key = registryDialogTag.getValue();
-                if (key.startsWith("#")) {
-                    for (final CompoundTag entry : registryAndTags.fromRegistryKey(key.substring(1))) {
-                        dialogsTag.add(entry);
+                for (final StringTag nameTag : registryDialogsTag) {
+                    final String key = nameTag.getValue();
+                    if (key.startsWith("#")) {
+                        for (final CompoundTag entry : registryAndTags.fromRegistryKey(key.substring(1))) {
+                            dialogsTag.add(entry);
+                        }
+                    } else {
+                        dialogsTag.add(registryAndTags.fromRegistry(key));
                     }
-                } else {
-                    dialogsTag.add(registryAndTags.fromRegistry(key));
                 }
             }
         }

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_6to1_21_5/provider/ChestDialogViewProvider.java

@@ -85,11 +85,18 @@ public class ChestDialogViewProvider implements DialogViewProvider {
                 texts.add(textWidget.label());
                 dialog.widgets().remove(textWidget);
             } else if (!texts.isEmpty()) {
+                // Flush collected texts before adding the non-text widget
                 dialog.widgets().add(dialog.widgets().indexOf(widget), new MultiTextWidget(texts.toArray(Tag[]::new)));
                 texts.clear();
             }
         }
 
+        // Flush remaining texts if any
+        if (!texts.isEmpty()) {
+            dialog.widgets().add(new MultiTextWidget(texts.toArray(Tag[]::new)));
+            texts.clear();
+        }
+
         final ChestDialogStorage previousStorage = connection.get(ChestDialogStorage.class);
         final ChestDialogStorage storage = new ChestDialogStorage(this, dialog);
         if (previousStorage != null) {
@@ -210,8 +217,9 @@ public class ChestDialogViewProvider implements DialogViewProvider {
             }
         }
 
-        // Resync inventory view if the actions above didn't close the dialog.
-        if (connection.has(ChestDialogStorage.class) && storage.phase() == ChestDialogStorage.Phase.DIALOG_VIEW) {
+        // Resync inventory view if the actions above didn't close the dialog nor opened another one.
+        final ChestDialogStorage currentStorage = connection.get(ChestDialogStorage.class);
+        if (currentStorage == storage && connection.has(ChestDialogStorage.class) && storage.phase() == ChestDialogStorage.Phase.DIALOG_VIEW) {
             updateDialog(connection, storage.dialog());
         }
         return true;
@@ -274,17 +282,19 @@ public class ChestDialogViewProvider implements DialogViewProvider {
     }
 
     protected Item getMultiTextWidget(final UserConnection connection, final MultiTextWidget multiTextWidget) {
-        final Tag name = handleTag(connection, multiTextWidget.labels()[0]);
-        final int length = multiTextWidget.labels().length;
-        if (length == 1) {
-            return createItem("minecraft:paper", name);
+        final List<Tag> lines = new ArrayList<>();
+        for (final Tag label : multiTextWidget.labels()) {
+            final Tag[] split = ChatUtil.split(fixStyle(label), "\n");
+            for (final Tag line : split) {
+                lines.add(handleTag(connection, line));
+            }
         }
 
-        final Tag[] lore = new Tag[length - 1];
-        for (int i = 1; i < length; i++) {
-            lore[i - 1] = handleTag(connection, fixStyle(multiTextWidget.labels()[i]));
+        final Tag[] lore = new Tag[lines.size() - 1];
+        for (int i = 1; i < lines.size(); i++) {
+            lore[i - 1] = lines.get(i);
         }
-        return createItem("minecraft:paper", name, lore);
+        return createItem("minecraft:paper", lines.get(0), lore);
     }
 
     protected Item getBooleanInput(final UserConnection connection, final BooleanInput booleanInput) {

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_6to1_21_5/rewriter/EntityPacketRewriter1_21_6.java

@@ -17,29 +17,18 @@
  */
 package com.viaversion.viabackwards.protocol.v1_21_6to1_21_5.rewriter;
 
-import com.viaversion.nbt.tag.CompoundTag;
-import com.viaversion.viabackwards.api.rewriters.BackwardsRegistryRewriter;
 import com.viaversion.viabackwards.api.rewriters.EntityRewriter;
 import com.viaversion.viabackwards.protocol.v1_21_6to1_21_5.Protocol1_21_6To1_21_5;
-import com.viaversion.viabackwards.protocol.v1_21_6to1_21_5.storage.RegistryAndTags;
-import com.viaversion.viaversion.api.connection.UserConnection;
-import com.viaversion.viaversion.api.minecraft.RegistryEntry;
 import com.viaversion.viaversion.api.minecraft.entities.EntityType;
 import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_21_6;
 import com.viaversion.viaversion.api.minecraft.entitydata.types.EntityDataTypes1_21_5;
 import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
 import com.viaversion.viaversion.api.type.Types;
 import com.viaversion.viaversion.api.type.types.version.VersionedTypes;
-import com.viaversion.viaversion.libs.fastutil.objects.Object2ObjectArrayMap;
-import com.viaversion.viaversion.libs.fastutil.objects.Object2ObjectMap;
 import com.viaversion.viaversion.protocols.v1_21_4to1_21_5.packet.ClientboundPackets1_21_5;
 import com.viaversion.viaversion.protocols.v1_21_4to1_21_5.packet.ServerboundPackets1_21_5;
-import com.viaversion.viaversion.protocols.v1_21_5to1_21_6.packet.ClientboundConfigurationPackets1_21_6;
 import com.viaversion.viaversion.protocols.v1_21_5to1_21_6.packet.ClientboundPacket1_21_6;
 import com.viaversion.viaversion.protocols.v1_21_5to1_21_6.packet.ClientboundPackets1_21_6;
-import com.viaversion.viaversion.rewriter.RegistryDataRewriter;
-import com.viaversion.viaversion.util.Key;
-import com.viaversion.viaversion.util.KeyMappings;
 
 public final class EntityPacketRewriter1_21_6 extends EntityRewriter<ClientboundPacket1_21_6, Protocol1_21_6To1_21_5> {
 
@@ -86,31 +75,6 @@ public final class EntityPacketRewriter1_21_6 extends EntityRewriter<Clientbound
             }
         });
 
-        final RegistryDataRewriter registryDataRewriter = new BackwardsRegistryRewriter(protocol) {
-            @Override
-            public RegistryEntry[] handle(final UserConnection connection, final String key, final RegistryEntry[] entries) {
-                if (Key.stripMinecraftNamespace(key).equals("dialog")) {
-                    final String[] keys = new String[entries.length];
-                    for (int i = 0; i < entries.length; i++) {
-                        keys[i] = Key.stripMinecraftNamespace(entries[i].key());
-                    }
-
-                    final Object2ObjectMap<String, CompoundTag> dialogs = new Object2ObjectArrayMap<>();
-                    for (final RegistryEntry entry : entries) {
-                        if (entry.tag() instanceof final CompoundTag tag) {
-                            dialogs.put(Key.stripMinecraftNamespace(entry.key()), tag);
-                        }
-                    }
-
-                    final RegistryAndTags registryAndTags = connection.get(RegistryAndTags.class);
-                    registryAndTags.storeRegistry(new KeyMappings(keys), dialogs);
-                }
-                return super.handle(connection, key, entries);
-            }
-        };
-        registryDataRewriter.remove("dialog"); // Tracked and now removed
-        protocol.registerClientbound(ClientboundConfigurationPackets1_21_6.REGISTRY_DATA, registryDataRewriter::handle);
-
         protocol.registerServerbound(ServerboundPackets1_21_5.PLAYER_COMMAND, wrapper -> {
             wrapper.passthrough(Types.VAR_INT); // Entity ID
 

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_6to1_21_5/rewriter/RegistryDataRewriter1_21_6.java

@@ -0,0 +1,59 @@
+/*
+ * 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.v1_21_6to1_21_5.rewriter;
+
+import com.viaversion.nbt.tag.CompoundTag;
+import com.viaversion.viabackwards.api.BackwardsProtocol;
+import com.viaversion.viabackwards.api.rewriters.BackwardsRegistryRewriter;
+import com.viaversion.viabackwards.protocol.v1_21_6to1_21_5.storage.RegistryAndTags;
+import com.viaversion.viaversion.api.connection.UserConnection;
+import com.viaversion.viaversion.api.minecraft.RegistryEntry;
+import com.viaversion.viaversion.libs.fastutil.objects.Object2ObjectArrayMap;
+import com.viaversion.viaversion.libs.fastutil.objects.Object2ObjectMap;
+import com.viaversion.viaversion.util.Key;
+import com.viaversion.viaversion.util.KeyMappings;
+
+public final class RegistryDataRewriter1_21_6 extends BackwardsRegistryRewriter {
+
+    public RegistryDataRewriter1_21_6(final BackwardsProtocol<?, ?, ?, ?> protocol) {
+        super(protocol);
+
+        remove("dialog"); // Tracked and now removed
+    }
+
+    @Override
+    public RegistryEntry[] handle(final UserConnection connection, final String key, final RegistryEntry[] entries) {
+        if (Key.stripMinecraftNamespace(key).equals("dialog")) {
+            final String[] keys = new String[entries.length];
+            for (int i = 0; i < entries.length; i++) {
+                keys[i] = Key.stripMinecraftNamespace(entries[i].key());
+            }
+
+            final Object2ObjectMap<String, CompoundTag> dialogs = new Object2ObjectArrayMap<>();
+            for (final RegistryEntry entry : entries) {
+                if (entry.tag() instanceof final CompoundTag tag) {
+                    dialogs.put(Key.stripMinecraftNamespace(entry.key()), tag);
+                }
+            }
+
+            final RegistryAndTags registryAndTags = connection.get(RegistryAndTags.class);
+            registryAndTags.storeRegistry(new KeyMappings(keys), dialogs);
+        }
+        return super.handle(connection, key, entries);
+    }
+}

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_6to1_21_5/storage/ClickEvents.java

@@ -19,6 +19,7 @@ package com.viaversion.viabackwards.protocol.v1_21_6to1_21_5.storage;
 
 import com.viaversion.nbt.tag.CompoundTag;
 import com.viaversion.nbt.tag.StringTag;
+import com.viaversion.viabackwards.ViaBackwards;
 import com.viaversion.viabackwards.protocol.v1_21_6to1_21_5.Protocol1_21_6To1_21_5;
 import com.viaversion.viabackwards.protocol.v1_21_6to1_21_5.data.Dialog;
 import com.viaversion.viabackwards.protocol.v1_21_6to1_21_5.provider.DialogViewProvider;
@@ -59,6 +60,10 @@ public final class ClickEvents implements StorableObject {
     public static void handleClickEvent(final UserConnection connection, final CompoundTag clickEvent) {
         final String action = Key.stripMinecraftNamespace(clickEvent.getString("action"));
         if ("show_dialog".equals(action)) {
+            if (!ViaBackwards.getConfig().dialogsViaChests()) {
+                return;
+            }
+
             final RegistryAndTags registryAndTags = connection.get(RegistryAndTags.class);
             final ServerLinks serverLinks = connection.get(ServerLinks.class);
 

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_7to1_21_6/Protocol1_21_7To1_21_6.java

@@ -19,6 +19,7 @@ package com.viaversion.viabackwards.protocol.v1_21_7to1_21_6;
 
 import com.viaversion.viabackwards.api.BackwardsProtocol;
 import com.viaversion.viabackwards.api.data.BackwardsMappingData;
+import com.viaversion.viabackwards.api.rewriters.BackwardsRegistryRewriter;
 import com.viaversion.viabackwards.api.rewriters.SoundRewriter;
 import com.viaversion.viabackwards.api.rewriters.text.NBTComponentRewriter;
 import com.viaversion.viabackwards.api.rewriters.text.TranslatableRewriter;
@@ -42,6 +43,7 @@ import com.viaversion.viaversion.protocols.v1_21_5to1_21_6.packet.ServerboundPac
 import com.viaversion.viaversion.protocols.v1_21_5to1_21_6.packet.ServerboundPackets1_21_6;
 import com.viaversion.viaversion.protocols.v1_21_6to1_21_7.Protocol1_21_6To1_21_7;
 import com.viaversion.viaversion.rewriter.ParticleRewriter;
+import com.viaversion.viaversion.rewriter.RegistryDataRewriter;
 import com.viaversion.viaversion.rewriter.StatisticsRewriter;
 import com.viaversion.viaversion.rewriter.TagRewriter;
 
@@ -55,6 +57,7 @@ public final class Protocol1_21_7To1_21_6 extends BackwardsProtocol<ClientboundP
     private final ParticleRewriter<ClientboundPacket1_21_6> particleRewriter = new ParticleRewriter<>(this);
     private final NBTComponentRewriter<ClientboundPacket1_21_6> translatableRewriter = new NBTComponentRewriter<>(this);
     private final TagRewriter<ClientboundPacket1_21_6> tagRewriter = new TagRewriter<>(this);
+    private final RegistryDataRewriter registryDataRewriter = new BackwardsRegistryRewriter(this);
 
     public Protocol1_21_7To1_21_6() {
         super(ClientboundPacket1_21_6.class, ClientboundPacket1_21_6.class, ServerboundPacket1_21_6.class, ServerboundPacket1_21_6.class);
@@ -64,6 +67,8 @@ public final class Protocol1_21_7To1_21_6 extends BackwardsProtocol<ClientboundP
     protected void registerPackets() {
         super.registerPackets();
 
+        registerClientbound(ClientboundConfigurationPackets1_21_6.REGISTRY_DATA, registryDataRewriter::handle);
+
         tagRewriter.registerGeneric(ClientboundPackets1_21_6.UPDATE_TAGS);
         tagRewriter.registerGeneric(ClientboundConfigurationPackets1_21_6.UPDATE_TAGS);
 
@@ -80,6 +85,7 @@ public final class Protocol1_21_7To1_21_6 extends BackwardsProtocol<ClientboundP
         translatableRewriter.registerBossEvent(ClientboundPackets1_21_6.BOSS_EVENT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_21_6.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_21_6.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_21_5(ClientboundPackets1_21_6.SET_PLAYER_TEAM);
         translatableRewriter.registerPlayerCombatKill1_20(ClientboundPackets1_21_6.PLAYER_COMBAT_KILL);
         translatableRewriter.registerPlayerInfoUpdate1_21_4(ClientboundPackets1_21_6.PLAYER_INFO_UPDATE);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_21_6.SYSTEM_CHAT);
@@ -127,6 +133,11 @@ public final class Protocol1_21_7To1_21_6 extends BackwardsProtocol<ClientboundP
         return itemRewriter;
     }
 
+    @Override
+    public RegistryDataRewriter getRegistryDataRewriter() {
+        return registryDataRewriter;
+    }
+
     @Override
     public ParticleRewriter<ClientboundPacket1_21_6> getParticleRewriter() {
         return particleRewriter;

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_7to1_21_6/rewriter/EntityPacketRewriter1_21_7.java

@@ -17,7 +17,6 @@
  */
 package com.viaversion.viabackwards.protocol.v1_21_7to1_21_6.rewriter;
 
-import com.viaversion.viabackwards.api.rewriters.BackwardsRegistryRewriter;
 import com.viaversion.viabackwards.api.rewriters.EntityRewriter;
 import com.viaversion.viabackwards.protocol.v1_21_7to1_21_6.Protocol1_21_7To1_21_6;
 import com.viaversion.viaversion.api.minecraft.entities.EntityType;
@@ -25,10 +24,8 @@ import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_21_4;
 import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_21_6;
 import com.viaversion.viaversion.api.minecraft.entitydata.types.EntityDataTypes1_21_5;
 import com.viaversion.viaversion.api.type.types.version.VersionedTypes;
-import com.viaversion.viaversion.protocols.v1_21_5to1_21_6.packet.ClientboundConfigurationPackets1_21_6;
 import com.viaversion.viaversion.protocols.v1_21_5to1_21_6.packet.ClientboundPacket1_21_6;
 import com.viaversion.viaversion.protocols.v1_21_5to1_21_6.packet.ClientboundPackets1_21_6;
-import com.viaversion.viaversion.rewriter.RegistryDataRewriter;
 
 public final class EntityPacketRewriter1_21_7 extends EntityRewriter<ClientboundPacket1_21_6, Protocol1_21_7To1_21_6> {
 
@@ -45,9 +42,6 @@ public final class EntityPacketRewriter1_21_7 extends EntityRewriter<Clientbound
         registerGameEvent(ClientboundPackets1_21_6.GAME_EVENT);
         registerLogin1_20_5(ClientboundPackets1_21_6.LOGIN);
         registerRespawn1_20_5(ClientboundPackets1_21_6.RESPAWN);
-
-        final RegistryDataRewriter registryDataRewriter = new BackwardsRegistryRewriter(protocol);
-        protocol.registerClientbound(ClientboundConfigurationPackets1_21_6.REGISTRY_DATA, registryDataRewriter::handle);
     }
 
     @Override

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_9to1_21_7/Protocol1_21_9To1_21_7.java

@@ -26,6 +26,8 @@ import com.viaversion.viabackwards.protocol.v1_21_9to1_21_7.rewriter.BlockItemPa
 import com.viaversion.viabackwards.protocol.v1_21_9to1_21_7.rewriter.ComponentRewriter1_21_9;
 import com.viaversion.viabackwards.protocol.v1_21_9to1_21_7.rewriter.EntityPacketRewriter1_21_9;
 import com.viaversion.viabackwards.protocol.v1_21_9to1_21_7.rewriter.ParticleRewriter1_21_9;
+import com.viaversion.viabackwards.protocol.v1_21_9to1_21_7.rewriter.RegistryDataRewriter1_21_9;
+import com.viaversion.viabackwards.protocol.v1_21_9to1_21_7.storage.DimensionScaleStorage;
 import com.viaversion.viabackwards.protocol.v1_21_9to1_21_7.storage.PlayerRotationStorage;
 import com.viaversion.viabackwards.protocol.v1_21_9to1_21_7.tracker.EntityTracker1_21_9;
 import com.viaversion.viaversion.api.connection.UserConnection;
@@ -54,6 +56,7 @@ import com.viaversion.viaversion.protocols.v1_21_7to1_21_9.packet.ClientboundPac
 import com.viaversion.viaversion.protocols.v1_21_7to1_21_9.packet.ServerboundConfigurationPackets1_21_9;
 import com.viaversion.viaversion.protocols.v1_21_7to1_21_9.packet.ServerboundPacket1_21_9;
 import com.viaversion.viaversion.rewriter.ParticleRewriter;
+import com.viaversion.viaversion.rewriter.RegistryDataRewriter;
 import com.viaversion.viaversion.rewriter.StatisticsRewriter;
 import com.viaversion.viaversion.rewriter.TagRewriter;
 
@@ -67,6 +70,7 @@ public final class Protocol1_21_9To1_21_7 extends BackwardsProtocol<ClientboundP
     private final ParticleRewriter<ClientboundPacket1_21_9> particleRewriter = new ParticleRewriter1_21_9(this);
     private final NBTComponentRewriter<ClientboundPacket1_21_9> translatableRewriter = new ComponentRewriter1_21_9(this);
     private final TagRewriter<ClientboundPacket1_21_9> tagRewriter = new TagRewriter<>(this);
+    private final RegistryDataRewriter registryDataRewriter = new RegistryDataRewriter1_21_9(this);
 
     public Protocol1_21_9To1_21_7() {
         super(ClientboundPacket1_21_9.class, ClientboundPacket1_21_6.class, ServerboundPacket1_21_9.class, ServerboundPacket1_21_6.class);
@@ -76,6 +80,8 @@ public final class Protocol1_21_9To1_21_7 extends BackwardsProtocol<ClientboundP
     protected void registerPackets() {
         super.registerPackets();
 
+        registerClientbound(ClientboundConfigurationPackets1_21_9.REGISTRY_DATA, registryDataRewriter::handle);
+
         tagRewriter.registerGeneric(ClientboundPackets1_21_9.UPDATE_TAGS);
         tagRewriter.registerGeneric(ClientboundConfigurationPackets1_21_9.UPDATE_TAGS);
 
@@ -93,6 +99,7 @@ public final class Protocol1_21_9To1_21_7 extends BackwardsProtocol<ClientboundP
         translatableRewriter.registerBossEvent(ClientboundPackets1_21_9.BOSS_EVENT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_21_9.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_21_9.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_21_5(ClientboundPackets1_21_9.SET_PLAYER_TEAM);
         translatableRewriter.registerPlayerCombatKill1_20(ClientboundPackets1_21_9.PLAYER_COMBAT_KILL);
         translatableRewriter.registerPlayerInfoUpdate1_21_4(ClientboundPackets1_21_9.PLAYER_INFO_UPDATE);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_21_9.SYSTEM_CHAT);
@@ -185,12 +192,19 @@ public final class Protocol1_21_9To1_21_7 extends BackwardsProtocol<ClientboundP
             }
         });
 
+        registerServerbound(ServerboundPackets1_21_6.DEBUG_SAMPLE_SUBSCRIPTION, wrapper -> {
+            final int sampleType = wrapper.read(Types.VAR_INT);
+            if (sampleType == 0) { // TICK_TIME
+                wrapper.write(Types.VAR_INT, 1); // Subscription count
+                wrapper.write(Types.VAR_INT, 0); // Subscription registry id (DEDICATED_SERVER_TICK_TIME)
+            }
+        });
+
         cancelClientbound(ClientboundPackets1_21_9.DEBUG_BLOCK_VALUE);
         cancelClientbound(ClientboundPackets1_21_9.DEBUG_CHUNK_VALUE);
         cancelClientbound(ClientboundPackets1_21_9.DEBUG_ENTITY_VALUE);
         cancelClientbound(ClientboundPackets1_21_9.DEBUG_EVENT);
         cancelClientbound(ClientboundPackets1_21_9.GAME_EVENT_TEST_HIGHLIGHT_POS);
-        cancelServerbound(ServerboundPackets1_21_6.DEBUG_SAMPLE_SUBSCRIPTION);
     }
 
     @Override
@@ -198,6 +212,7 @@ public final class Protocol1_21_9To1_21_7 extends BackwardsProtocol<ClientboundP
         addEntityTracker(connection, new EntityTracker1_21_9(connection, EntityTypes1_21_9.PLAYER));
         addItemHasher(connection, new ItemHasherBase(this, connection));
         connection.put(new PlayerRotationStorage());
+        connection.put(new DimensionScaleStorage());
     }
 
     @Override
@@ -215,6 +230,11 @@ public final class Protocol1_21_9To1_21_7 extends BackwardsProtocol<ClientboundP
         return itemRewriter;
     }
 
+    @Override
+    public RegistryDataRewriter getRegistryDataRewriter() {
+        return registryDataRewriter;
+    }
+
     @Override
     public ParticleRewriter<ClientboundPacket1_21_9> getParticleRewriter() {
         return particleRewriter;

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_9to1_21_7/rewriter/BlockItemPacketRewriter1_21_9.java

@@ -18,13 +18,20 @@
 package com.viaversion.viabackwards.protocol.v1_21_9to1_21_7.rewriter;
 
 import com.viaversion.nbt.tag.CompoundTag;
+import com.viaversion.nbt.tag.ListTag;
 import com.viaversion.viabackwards.api.rewriters.BackwardsStructuredItemRewriter;
 import com.viaversion.viabackwards.protocol.v1_21_9to1_21_7.Protocol1_21_9To1_21_7;
+import com.viaversion.viabackwards.protocol.v1_21_9to1_21_7.storage.DimensionScaleStorage;
 import com.viaversion.viaversion.api.connection.UserConnection;
+import com.viaversion.viaversion.api.data.entity.EntityTracker;
 import com.viaversion.viaversion.api.minecraft.ResolvableProfile;
+import com.viaversion.viaversion.api.minecraft.blockentity.BlockEntity;
+import com.viaversion.viaversion.api.minecraft.chunks.Chunk;
 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.protocol.packet.PacketWrapper;
+import com.viaversion.viaversion.api.type.Types;
 import com.viaversion.viaversion.api.type.types.chunk.ChunkType1_21_5;
 import com.viaversion.viaversion.protocols.v1_21_4to1_21_5.rewriter.RecipeDisplayRewriter1_21_5;
 import com.viaversion.viaversion.protocols.v1_21_5to1_21_6.packet.ServerboundPacket1_21_6;
@@ -38,6 +45,8 @@ import static com.viaversion.viaversion.protocols.v1_21_7to1_21_9.rewriter.Block
 import static com.viaversion.viaversion.protocols.v1_21_7to1_21_9.rewriter.BlockItemPacketRewriter1_21_9.upgradeData;
 
 public final class BlockItemPacketRewriter1_21_9 extends BackwardsStructuredItemRewriter<ClientboundPacket1_21_9, ServerboundPacket1_21_6, Protocol1_21_9To1_21_7> {
+    private static final int SIGN_BOCK_ENTITY_ID = 7;
+    private static final int HANGING_SIGN_BOCK_ENTITY_ID = 8;
 
     public BlockItemPacketRewriter1_21_9(final Protocol1_21_9To1_21_7 protocol) {
         super(protocol);
@@ -50,8 +59,8 @@ public final class BlockItemPacketRewriter1_21_9 extends BackwardsStructuredItem
         blockRewriter.registerBlockUpdate(ClientboundPackets1_21_9.BLOCK_UPDATE);
         blockRewriter.registerSectionBlocksUpdate1_20(ClientboundPackets1_21_9.SECTION_BLOCKS_UPDATE);
         blockRewriter.registerLevelEvent1_21(ClientboundPackets1_21_9.LEVEL_EVENT, 2001);
-        blockRewriter.registerLevelChunk1_19(ClientboundPackets1_21_9.LEVEL_CHUNK_WITH_LIGHT, ChunkType1_21_5::new);
-        blockRewriter.registerBlockEntityData(ClientboundPackets1_21_9.BLOCK_ENTITY_DATA);
+        blockRewriter.registerLevelChunk1_19(ClientboundPackets1_21_9.LEVEL_CHUNK_WITH_LIGHT, ChunkType1_21_5::new, this::handleBlockEntity);
+        blockRewriter.registerBlockEntityData(ClientboundPackets1_21_9.BLOCK_ENTITY_DATA, this::handleBlockEntity);
 
         registerSetCursorItem(ClientboundPackets1_21_9.SET_CURSOR_ITEM);
         registerSetPlayerInventory(ClientboundPackets1_21_9.SET_PLAYER_INVENTORY);
@@ -68,6 +77,9 @@ public final class BlockItemPacketRewriter1_21_9 extends BackwardsStructuredItem
         recipeRewriter.registerUpdateRecipes(ClientboundPackets1_21_9.UPDATE_RECIPES);
         recipeRewriter.registerRecipeBookAdd(ClientboundPackets1_21_9.RECIPE_BOOK_ADD);
         recipeRewriter.registerPlaceGhostRecipe(ClientboundPackets1_21_9.PLACE_GHOST_RECIPE);
+
+        protocol.registerClientbound(ClientboundPackets1_21_9.INITIALIZE_BORDER, this::updateBorderCenter);
+        protocol.registerClientbound(ClientboundPackets1_21_9.SET_BORDER_CENTER, this::updateBorderCenter);
     }
 
     @Override
@@ -123,4 +135,44 @@ public final class BlockItemPacketRewriter1_21_9 extends BackwardsStructuredItem
             ));
         }
     }
+
+    private void handleBlockEntity(final UserConnection connection, final BlockEntity blockEntity) {
+        final CompoundTag tag = blockEntity.tag();
+        if (tag == null) {
+            return;
+        }
+
+        if (blockEntity.typeId() == SIGN_BOCK_ENTITY_ID || blockEntity.typeId() == HANGING_SIGN_BOCK_ENTITY_ID) {
+            updateSignMessages(connection, tag.getCompoundTag("front_text"));
+            updateSignMessages(connection, tag.getCompoundTag("back_text"));
+        }
+    }
+
+    private void updateSignMessages(final UserConnection connection, final CompoundTag tag) {
+        if (tag == null) {
+            return;
+        }
+
+        final ListTag<?> messages = tag.getListTag("messages");
+        protocol.getComponentRewriter().processTag(connection, messages);
+        final ListTag<?> filteredMessages = tag.getListTag("filtered_messages");
+        if (filteredMessages != null) {
+            protocol.getComponentRewriter().processTag(connection, filteredMessages);
+        }
+    }
+
+    private void updateBorderCenter(final PacketWrapper wrapper) {
+        double centerX = wrapper.read(Types.DOUBLE);
+        double centerZ = wrapper.read(Types.DOUBLE);
+
+        final EntityTracker tracker = protocol.getEntityRewriter().tracker(wrapper.user());
+        if (tracker.currentDimensionId() != -1) {
+            final double scale = wrapper.user().get(DimensionScaleStorage.class).getScale(tracker.currentDimensionId());
+            centerX *= scale;
+            centerZ *= scale;
+        }
+
+        wrapper.write(Types.DOUBLE, centerX);
+        wrapper.write(Types.DOUBLE, centerZ);
+    }
 }

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_9to1_21_7/rewriter/ComponentRewriter1_21_9.java

@@ -30,6 +30,25 @@ public final class ComponentRewriter1_21_9 extends NBTComponentRewriter<Clientbo
         super(protocol);
     }
 
+    @Override
+    protected void processCompoundTag(final UserConnection connection, final CompoundTag tag) {
+        super.processCompoundTag(connection, tag);
+
+        // Throw out the new object type and its properties
+        final String type = tag.getString("type");
+        if ("object".equals(type)) {
+            tag.putString("text", "");
+            tag.remove("type");
+        }
+        if (tag.remove("sprite") != null) {
+            tag.putString("text", "");
+        }
+        if (tag.remove("player") != null) {
+            tag.putString("text", "");
+        }
+        tag.remove("atlas");
+    }
+
     @Override
     protected void handleShowItem(final UserConnection connection, final CompoundTag itemTag, final CompoundTag componentsTag) {
         super.handleShowItem(connection, itemTag, componentsTag);

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_9to1_21_7/rewriter/EntityPacketRewriter1_21_9.java

@@ -20,7 +20,6 @@ package com.viaversion.viabackwards.protocol.v1_21_9to1_21_7.rewriter;
 import com.viaversion.nbt.tag.CompoundTag;
 import com.viaversion.nbt.tag.StringTag;
 import com.viaversion.nbt.tag.Tag;
-import com.viaversion.viabackwards.api.rewriters.BackwardsRegistryRewriter;
 import com.viaversion.viabackwards.api.rewriters.EntityRewriter;
 import com.viaversion.viabackwards.protocol.v1_21_9to1_21_7.Protocol1_21_9To1_21_7;
 import com.viaversion.viabackwards.protocol.v1_21_9to1_21_7.storage.MannequinData;
@@ -40,10 +39,8 @@ import com.viaversion.viaversion.api.type.Types;
 import com.viaversion.viaversion.api.type.types.version.VersionedTypes;
 import com.viaversion.viaversion.protocols.v1_21_5to1_21_6.packet.ClientboundPackets1_21_6;
 import com.viaversion.viaversion.protocols.v1_21_5to1_21_6.packet.ServerboundPackets1_21_6;
-import com.viaversion.viaversion.protocols.v1_21_7to1_21_9.packet.ClientboundConfigurationPackets1_21_9;
 import com.viaversion.viaversion.protocols.v1_21_7to1_21_9.packet.ClientboundPacket1_21_9;
 import com.viaversion.viaversion.protocols.v1_21_7to1_21_9.packet.ClientboundPackets1_21_9;
-import com.viaversion.viaversion.rewriter.RegistryDataRewriter;
 import com.viaversion.viaversion.rewriter.entitydata.EntityDataHandler;
 import com.viaversion.viaversion.util.ChatColorUtil;
 import java.util.BitSet;
@@ -127,9 +124,6 @@ public final class EntityPacketRewriter1_21_9 extends EntityRewriter<Clientbound
             wrapper.read(Types.FLOAT); // Pitch
         });
 
-        final RegistryDataRewriter registryDataRewriter = new BackwardsRegistryRewriter(protocol);
-        protocol.registerClientbound(ClientboundConfigurationPackets1_21_9.REGISTRY_DATA, registryDataRewriter::handle);
-
         protocol.registerServerbound(ServerboundPackets1_21_6.MOVE_PLAYER_POS_ROT, wrapper -> {
             wrapper.passthrough(Types.DOUBLE); // X
             wrapper.passthrough(Types.DOUBLE); // Y

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_9to1_21_7/rewriter/RegistryDataRewriter1_21_9.java

@@ -0,0 +1,52 @@
+/*
+ * 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.v1_21_9to1_21_7.rewriter;
+
+import com.viaversion.nbt.tag.CompoundTag;
+import com.viaversion.viabackwards.api.BackwardsProtocol;
+import com.viaversion.viabackwards.api.rewriters.BackwardsRegistryRewriter;
+import com.viaversion.viabackwards.protocol.v1_21_9to1_21_7.storage.DimensionScaleStorage;
+import com.viaversion.viaversion.api.connection.UserConnection;
+import com.viaversion.viaversion.api.minecraft.RegistryEntry;
+
+public final class RegistryDataRewriter1_21_9 extends BackwardsRegistryRewriter {
+
+    public RegistryDataRewriter1_21_9(final BackwardsProtocol<?, ?, ?, ?> protocol) {
+        super(protocol);
+    }
+
+    @Override
+    public void trackDimensionAndBiomes(final UserConnection connection, final String registryKey, final RegistryEntry[] entries) {
+        super.trackDimensionAndBiomes(connection, registryKey, entries);
+        if (!registryKey.equals("dimension_type")) {
+            return;
+        }
+
+        final DimensionScaleStorage dimensionScaleStorage = connection.get(DimensionScaleStorage.class);
+        for (int i = 0; i < entries.length; i++) {
+            final RegistryEntry entry = entries[i];
+            final CompoundTag dimension = (CompoundTag) entry.tag();
+            if (dimension == null) {
+                continue;
+            }
+
+            final double coordinateScale = dimension.getDouble("coordinate_scale", 1);
+            dimensionScaleStorage.setScale(i, coordinateScale);
+        }
+    }
+}

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21_9to1_21_7/storage/DimensionScaleStorage.java

@@ -0,0 +1,35 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * 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.v1_21_9to1_21_7.storage;
+
+import com.viaversion.viaversion.api.connection.StorableObject;
+import java.util.HashMap;
+import java.util.Map;
+
+public final class DimensionScaleStorage implements StorableObject {
+
+    private final Map<Integer, Double> dimensionScales = new HashMap<>(4);
+
+    public double getScale(final int dimensionId) {
+        return dimensionScales.getOrDefault(dimensionId, 1D);
+    }
+
+    public void setScale(final int dimensionId, final double scale) {
+        dimensionScales.put(dimensionId, scale);
+    }
+}

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21to1_20_5/Protocol1_21To1_20_5.java

@@ -93,6 +93,7 @@ public final class Protocol1_21To1_20_5 extends BackwardsProtocol<ClientboundPac
         translatableRewriter.registerBossEvent(ClientboundPackets1_21.BOSS_EVENT);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_21.DISCONNECT);
         translatableRewriter.registerTabList(ClientboundPackets1_21.TAB_LIST);
+        translatableRewriter.registerSetPlayerTeam1_13(ClientboundPackets1_21.SET_PLAYER_TEAM);
         translatableRewriter.registerPlayerCombatKill1_20(ClientboundPackets1_21.PLAYER_COMBAT_KILL);
         translatableRewriter.registerComponentPacket(ClientboundPackets1_21.SYSTEM_CHAT);
         translatableRewriter.registerPing();

common/src/main/java/com/viaversion/viabackwards/protocol/v1_21to1_20_5/rewriter/BlockItemPacketRewriter1_21.java

@@ -324,7 +324,7 @@ public final class BlockItemPacketRewriter1_21 extends BackwardsStructuredItemRe
             if (songIdentifier != null) {
                 song = EitherHolder.of(songIdentifier);
             } else {
-                song = EitherHolder.of(restoreHolder(tag, "song", songTag -> {
+                song = EitherHolder.of(restoreHolder(jukeboxPlayableTag, "song", songTag -> {
                     final Holder<SoundEvent> soundEvent = restoreSoundEventHolder(songTag);
                     final Tag description = songTag.get("description");
                     final float lengthInSeconds = songTag.getFloat("length_in_seconds");

common/src/main/resources/assets/viabackwards/config.yml

@@ -45,6 +45,9 @@ map-display-entities: true
 # Suppresses warnings of missing emulations for certain features that are not supported (e.g. world height in 1.17+).
 suppress-emulation-warnings: false
 #
+# If enabled, dialogs will be shown via chest inventories for 1.21.5 clients on 1.21.6+ servers.
+dialogs-via-chests: true
+#
 # Dialog styling. You can also use translation keys here.
 dialog-style:
   page-navigation-title: "&9&lPage navigation"

common/src/main/resources/assets/viabackwards/data/translation-mappings.json

@@ -1,4 +1,172 @@
 {
+  "1.21.11": {
+    "advancements.adventure.spear_many_mobs.description": "Hit five mobs in the same Charge attack using the Spear",
+    "advancements.adventure.spear_many_mobs.title": "Mob Kabob",
+    "advMode.setCommand.disabled": "Command set: %s, but command blocks are still disabled",
+    "chat.queue.tooltip": "Click to display next message",
+    "commands.stopwatch.already_exists": "Stopwatch '%s' already exists",
+    "commands.stopwatch.create.success": "Created Stopwatch '%s'",
+    "commands.stopwatch.does_not_exist": "Stopwatch '%s' does not exist",
+    "commands.stopwatch.query": "Stopwatch '%s' has run for %ss",
+    "commands.stopwatch.remove.success": "Removed Stopwatch '%s'",
+    "commands.stopwatch.restart.success": "Restarted Stopwatch '%s'",
+    "death.attack.spear": "%1$s was speared by %2$s",
+    "death.attack.spear.item": "%1$s was speared by %2$s using %3$s",
+    "debug.crash.message.rebindable": "%s + %s is held down. This will crash the game unless released.",
+    "debug.entry.currently.inOverlay": "%s: Currently only in debug overlay",
+    "debug.entry.overlay": "In Overlay",
+    "debug.profiling.start.rebindable": "Profiling started for %s seconds. Use %s + %s to stop early",
+    "effect.minecraft.breath_of_the_nautilus": "Breath of the Nautilus",
+    "enchantment.minecraft.lunge": "Lunge",
+    "entity.minecraft.camel_husk": "Camel Husk",
+    "entity.minecraft.nautilus": "Nautilus",
+    "entity.minecraft.parched": "Parched",
+    "entity.minecraft.zombie_nautilus": "Zombie Nautilus",
+    "gamerule.minecraft.elytra_movement_check": "Do elytra movement check",
+    "gamerule.minecraft.fire_spread_radius_around_player": "Fire spread radius",
+    "gamerule.minecraft.fire_spread_radius_around_player.description": "The radius in blocks around a player in which fire can spread",
+    "gamerule.minecraft.player_movement_check": "Do player movement check",
+    "gamerule.minecraft.raids": "Do raids",
+    "item.intangible": "Intangible",
+    "item.minecraft.camel_husk_spawn_egg": "Camel Husk Spawn Egg",
+    "item.minecraft.copper_nautilus_armor": "Copper Nautilus Armor",
+    "item.minecraft.copper_spear": "Copper Spear",
+    "item.minecraft.diamond_nautilus_armor": "Diamond Nautilus Armor",
+    "item.minecraft.diamond_spear": "Diamond Spear",
+    "item.minecraft.golden_nautilus_armor": "Golden Nautilus Armor",
+    "item.minecraft.golden_spear": "Golden Spear",
+    "item.minecraft.iron_nautilus_armor": "Iron Nautilus Armor",
+    "item.minecraft.iron_spear": "Iron Spear",
+    "item.minecraft.nautilus_spawn_egg": "Nautilus Spawn Egg",
+    "item.minecraft.netherite_horse_armor": "Netherite Horse Armor",
+    "item.minecraft.netherite_nautilus_armor": "Netherite Nautilus Armor",
+    "item.minecraft.netherite_spear": "Netherite Spear",
+    "item.minecraft.parched_spawn_egg": "Parched Spawn Egg",
+    "item.minecraft.stone_spear": "Stone Spear",
+    "item.minecraft.wooden_spear": "Wooden Spear",
+    "item.minecraft.zombie_nautilus_spawn_egg": "Zombie Nautilus Spawn Egg",
+    "key.category.minecraft.debug": "Debug",
+    "key.debug.clearChat": "Clear Chat",
+    "key.debug.copyLocation": "Copy Location",
+    "key.debug.copyRecreateCommand": "Copy Data",
+    "key.debug.crash": "Debug Crash",
+    "key.debug.dumpDynamicTextures": "Dump Dynamic Textures",
+    "key.debug.dumpVersion": "Dump Version Info",
+    "key.debug.focusPause": "Toggle Lost Focus Pause",
+    "key.debug.fpsCharts": "FPS Charts",
+    "key.debug.modifier": "Debug Modifier Key",
+    "key.debug.networkCharts": "Network Charts",
+    "key.debug.overlay": "Toggle Overlay",
+    "key.debug.profiling": "Start/Stop Profiling",
+    "key.debug.profilingChart": "Profiling Chart",
+    "key.debug.reloadChunk": "Reload Chunks",
+    "key.debug.reloadResourcePacks": "Reload Resource Packs",
+    "key.debug.showAdvancedTooltips": "Show Advanced Tooltips",
+    "key.debug.showChunkBorders": "Show Chunk Boundaries",
+    "key.debug.showHitboxes": "Show Hitboxes",
+    "key.debug.spectate": "Cycle Spectator",
+    "key.debug.switchGameMode": "Game Mode Switcher",
+    "key.toggleGui": "Toggle GUI",
+    "key.toggleSpectatorShaderEffects": "Toggle Spectator Shader Effects",
+    "mco.backup.entry.worldType.adventureMap": "Adventure Map",
+    "mco.backup.entry.worldType.experience": "Experience",
+    "mco.configure.world.name.validation.whitespace": "Must not start or end with whitespace. It will be trimmed.",
+    "narration.checkbox.usage.focused.check": "Press Enter to check",
+    "narration.checkbox.usage.focused.uncheck": "Press Enter to uncheck",
+    "narration.checkbox.usage.hovered.check": "Left click to check",
+    "narration.checkbox.usage.hovered.uncheck": "Left click to uncheck",
+    "options.blocks": "%s Blocks",
+    "options.chunkFade": "Chunk Fade Time",
+    "options.chunkFade.none": "Chunk Fade: None",
+    "options.chunkFade.seconds": "Chunk Fade: %s second(s)",
+    "options.chunkFade.tooltip": "How long in seconds chunks should fade in when they're first rendered, if at all.",
+    "options.cutoutLeaves": "See-Through Leaves",
+    "options.cutoutLeaves.tooltip": "Allows you to see through gaps in leaves. Disabling improves performance.",
+    "options.graphics.preset": "Preset",
+    "options.graphics.preset.tooltip": "Sets \"Quality & Performance\" settings to reasonable defaults corresponding to the desired quality.",
+    "options.improvedTransparency": "Improved Transparency",
+    "options.improvedTransparency.tooltip": "An experimental approach that uses screen shaders for drawing weather, clouds, and particles behind translucent blocks and water.\nThis will impact GPU performance.",
+    "options.maxAnisotropy": "Anisotropic Filtering",
+    "options.maxAnisotropy.tooltip": "Each level significantly improves how smooth textures look, but impacts performance and significantly impacts video memory usage. Requires Texture Filtering to be set to Anisotropic.",
+    "options.musicToast": "Music Toast",
+    "options.musicToast.never.tooltip": "No music toast is shown.",
+    "options.musicToast.pauseMenu": "Pause Menu",
+    "options.musicToast.pauseMenu.tooltip": "A music toast is constantly displayed in the in-game pause menu while a song is playing.",
+    "options.musicToast.pauseMenuAndToast": "Pause Menu and Toast",
+    "options.musicToast.pauseMenuAndToast.tooltip": "Displays a toast when a song starts playing. The same toast is constantly displayed in the in-game pause menu while a song is playing.",
+    "options.textureFiltering": "Texture Filtering",
+    "options.textureFiltering.anisotropic": "Anisotropic",
+    "options.textureFiltering.anisotropic.tooltip": "A hardware based filtering method, but impacts performance and significantly impacts video memory usage. May not be supported on all hardware.",
+    "options.textureFiltering.none.tooltip": "Textures are displayed without any filtering. Blocks may look blurry when viewed at an angle.",
+    "options.textureFiltering.rgss": "RGSS",
+    "options.textureFiltering.rgss.tooltip": "(Rotated Grid Super Sampling)\nA shader based filtering method that improves texture quality with a moderate performance impact.",
+    "options.video.display.header": "Display",
+    "options.video.interface.header": "Interface",
+    "options.video.preferences.header": "Preferences",
+    "options.video.quality.header": "Quality & Performance",
+    "options.vignette": "Show Vignette",
+    "options.vignette.tooltip": "This is a subtle texture over the game screen used for reducing brightness towards the edges of the screen and warning about the world border.",
+    "options.weatherRadius": "Weather Effect Radius",
+    "options.weatherRadius.tooltip": "Radius of the area where rain and snow effects are visible. Very low performance impact.",
+    "stat.minecraft.nautilus_one_cm": "Distance by Nautilus",
+    "subtitles.entity.baby_nautilus.ambient": "Baby Nautilus chitters",
+    "subtitles.entity.baby_nautilus.ambient_land": "Baby Nautilus chitters",
+    "subtitles.entity.baby_nautilus.death": "Baby Nautilus dies",
+    "subtitles.entity.baby_nautilus.death_land": "Baby Nautilus dies",
+    "subtitles.entity.baby_nautilus.eat": "Baby Nautilus eats",
+    "subtitles.entity.baby_nautilus.hurt": "Baby Nautilus hurts",
+    "subtitles.entity.baby_nautilus.hurt_land": "Baby Nautilus hurts",
+    "subtitles.entity.baby_nautilus.swim": "Baby Nautilus swims",
+    "subtitles.entity.camel_husk.ambient": "Camel Husk grumphs",
+    "subtitles.entity.camel_husk.dash": "Camel Husk yeets",
+    "subtitles.entity.camel_husk.dash_ready": "Camel Husk recovers",
+    "subtitles.entity.camel_husk.death": "Camel Husk dies",
+    "subtitles.entity.camel_husk.eat": "Camel Husk eats",
+    "subtitles.entity.camel_husk.hurt": "Camel Husk hurts",
+    "subtitles.entity.camel_husk.sit": "Camel Husk sits down",
+    "subtitles.entity.camel_husk.stand": "Camel Husk stands up",
+    "subtitles.entity.nautilus.ambient": "Nautilus clacks",
+    "subtitles.entity.nautilus.ambient_land": "Nautilus clacks",
+    "subtitles.entity.nautilus.dash": "Nautilus jets",
+    "subtitles.entity.nautilus.dash_land": "Nautilus jets",
+    "subtitles.entity.nautilus.dash_ready": "Nautilus recovers",
+    "subtitles.entity.nautilus.dash_ready_land": "Nautilus recovers",
+    "subtitles.entity.nautilus.death": "Nautilus dies",
+    "subtitles.entity.nautilus.death_land": "Nautilus dies",
+    "subtitles.entity.nautilus.eat": "Nautilus eats",
+    "subtitles.entity.nautilus.hurt": "Nautilus hurts",
+    "subtitles.entity.nautilus.hurt_land": "Nautilus hurts",
+    "subtitles.entity.nautilus.swim": "Nautilus swims",
+    "subtitles.entity.parched.ambient": "Parched crackles",
+    "subtitles.entity.parched.death": "Parched dies",
+    "subtitles.entity.parched.hurt": "Parched hurts",
+    "subtitles.entity.parrot.imitate.camel_husk": "Parrot grumphs",
+    "subtitles.entity.parrot.imitate.parched": "Parrot crackles",
+    "subtitles.entity.parrot.imitate.zombie_nautilus": "Parrot gargles",
+    "subtitles.entity.zombie_horse.angry": "Zombie Horse neighs",
+    "subtitles.entity.zombie_horse.eat": "Zombie Horse eats",
+    "subtitles.entity.zombie_nautilus.ambient": "Zombie Nautilus burbles",
+    "subtitles.entity.zombie_nautilus.ambient_land": "Zombie Nautilus burbles",
+    "subtitles.entity.zombie_nautilus.dash": "Zombie Nautilus jets",
+    "subtitles.entity.zombie_nautilus.dash_land": "Zombie Nautilus jets",
+    "subtitles.entity.zombie_nautilus.dash_ready": "Zombie Nautilus recovers",
+    "subtitles.entity.zombie_nautilus.dash_ready_land": "Zombie Nautilus recovers",
+    "subtitles.entity.zombie_nautilus.death": "Zombie Nautilus dies",
+    "subtitles.entity.zombie_nautilus.death_land": "Zombie Nautilus dies",
+    "subtitles.entity.zombie_nautilus.eat": "Zombie Nautilus eats",
+    "subtitles.entity.zombie_nautilus.hurt": "Zombie Nautilus hurts",
+    "subtitles.entity.zombie_nautilus.hurt_land": "Zombie Nautilus hurts",
+    "subtitles.entity.zombie_nautilus.swim": "Zombie Nautilus swims",
+    "subtitles.item.armor.equip_nautilus": "Nautilus Armor equips",
+    "subtitles.item.armor.unequip_nautilus": "Nautilus Armor unequips",
+    "subtitles.item.spear_wood.attack": "Spear jabs",
+    "subtitles.item.spear_wood.hit": "Spear hits",
+    "subtitles.item.spear_wood.use": "Charges with Spear",
+    "subtitles.item.spear.attack": "Spear jabs",
+    "subtitles.item.spear.hit": "Spear hits",
+    "subtitles.item.spear.lunge": "Spear lunges",
+    "subtitles.item.spear.use": "Charges with Spear"
+  },
   "1.21.9": {
     "advMode.notEnabled.spawner": "Spawner blocks are not enabled",
     "block.minecraft.acacia_shelf": "Acacia Shelf",

gradle.properties

@@ -1,8 +1,8 @@
-projectVersion=5.5.0
+projectVersion=5.6.0
 
 # Smile emoji (note that modrinth may not have added the version on release yet)
-mcVersions=1.21.9, 1.21.8, 1.21.7, 1.21.6, 1.21.5, 1.21.4, 1.21.3, 1.21.2, 1.21.1, 1.21, 1.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2, 1.20.1, 1.20, 1.19.4, 1.19.3, 1.19.2, 1.19.1, 1.19, 1.18.2, 1.18.1, 1.18, 1.17.1, 1.17, 1.16.5, 1.16.4, 1.16.3, 1.16.2, 1.16.1, 1.16, 1.15.2, 1.15.1, 1.15, 1.14.4, 1.14.3, 1.14.2, 1.14.1, 1.14, 1.13.2, 1.13.1, 1.13, 1.12.2, 1.12.1, 1.12, 1.11.2, 1.11.1, 1.11, 1.10.2, 1.10.1, 1.10
-mcVersionRange=1.10-1.21.9
+mcVersions=1.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7, 1.21.6, 1.21.5, 1.21.4, 1.21.3, 1.21.2, 1.21.1, 1.21, 1.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2, 1.20.1, 1.20, 1.19.4, 1.19.3, 1.19.2, 1.19.1, 1.19, 1.18.2, 1.18.1, 1.18, 1.17.1, 1.17, 1.16.5, 1.16.4, 1.16.3, 1.16.2, 1.16.1, 1.16, 1.15.2, 1.15.1, 1.15, 1.14.4, 1.14.3, 1.14.2, 1.14.1, 1.14, 1.13.2, 1.13.1, 1.13, 1.12.2, 1.12.1, 1.12, 1.11.2, 1.11.1, 1.11, 1.10.2, 1.10.1, 1.10
+mcVersionRange=1.10-1.21.11
 velocityVersion=3.4
 
 org.gradle.configureondemand=true

gradle/libs.versions.toml

@@ -3,7 +3,7 @@ metadata.format.version = "1.1"
 [versions]
 
 # ViaVersion
-viaver = "5.5.0"
+viaver = "5.6.0"
 
 # Common provided
 netty = "4.0.20.Final"
@@ -16,7 +16,7 @@ checkerQual = "3.51.0"
 paper = "1.16.5-R0.1-SNAPSHOT"
 velocity = "3.1.1"
 fabricLoader = "0.11.6"
-viaProxy = "3.4.5-SNAPSHOT"
+viaProxy = "3.4.7-SNAPSHOT"
 
 [libraries]
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,7 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=a17ddd85a26b6a7f5ddb71ff8b05fc5104c0202c6e64782429790c933686c806
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.1.0-bin.zip
+distributionSha256Sum=72f44c9f8ebcb1af43838f45ee5c4aa9c5444898b3468ab3f4af7b6076c5bc3f
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

sponge/src/main/resources/META-INF/sponge_plugins.json

@@ -47,7 +47,7 @@
       },
       {
         "id": "viaversion",
-        "version": "[5.5.0-SNAPSHOT,)"
+        "version": "[5.6.0-SNAPSHOT,)"
       }
     ]
   },

universal/build.gradle.kts

@@ -1,5 +1,5 @@
 plugins {
-    id("io.papermc.hangar-publish-plugin") version "0.1.3"
+    id("io.papermc.hangar-publish-plugin") version "0.1.4"
     id("com.modrinth.minotaur") version "2.+"
 
     // A nice no-conflict comment for patching in downgrading