3.2.0 Release

Fixes #274

.github/ISSUE_TEMPLATE/bug_report.md

@@ -5,7 +5,7 @@ about: Create a bug report so we can fix it
 ---
 
 **Describe the bug, provide any errors**
-A clear and concise description of what the bug is. Can you https://hastebin.com the error?
+A clear and concise description of what the bug is. Can you https://paste.gg/ the error?
 
 **How can we reproduce it?**
 Steps to reproduce the behavior:
@@ -24,3 +24,8 @@ If applicable, add screenshots to help explain your problem.
 
 **Additional server info**
 Do you use a proxy (eg. BungeeCord)? What software do you use and what plugins?
+
+**Checklist**
+- [ ] I have included a ViaVersion dump
+- [ ] If applicable, I have included a paste (not a screenshot) of the error
+- [ ] I have tried a build from https://ci.viaversion.com/ and the issue still persists

README.md

@@ -2,6 +2,12 @@
 
 Allows older Minecraft versions on a newer Minecraft server
 
+Supported versions
+-
+**Green** = ViaVersion\
+**Purple** = ViaBackwards addition
+
+![supported_versions](https://i.imgur.com/HBihr0t.png)
 
 Releases / Dev Builds
 -

all/pom.xml

@@ -16,7 +16,7 @@
     <parent>
         <artifactId>viabackwards-parent</artifactId>
         <groupId>nl.matsv</groupId>
-        <version>3.0.0</version>
+        <version>3.2.0</version>
     </parent>
 
     <artifactId>viabackwards-all</artifactId>

bukkit/pom.xml

@@ -16,7 +16,7 @@
     <parent>
         <artifactId>viabackwards-parent</artifactId>
         <groupId>nl.matsv</groupId>
-        <version>3.0.0</version>
+        <version>3.2.0</version>
     </parent>
 
     <artifactId>viabackwards-bukkit</artifactId>
@@ -32,7 +32,7 @@
         <dependency>
             <groupId>org.spigotmc</groupId>
             <artifactId>spigot-api</artifactId>
-            <version>1.15.2-R0.1-SNAPSHOT</version>
+            <version>1.16.1-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
         <dependency>

bukkit/src/main/java/nl/matsv/viabackwards/BukkitPlugin.java

@@ -11,6 +11,7 @@
 package nl.matsv.viabackwards;
 
 import nl.matsv.viabackwards.api.ViaBackwardsPlatform;
+import nl.matsv.viabackwards.listener.FireExtinguishListener;
 import nl.matsv.viabackwards.listener.LecternInteractListener;
 import org.bukkit.plugin.java.JavaPlugin;
 import us.myles.ViaVersion.api.Via;
@@ -27,8 +28,11 @@ public class BukkitPlugin extends JavaPlugin implements ViaBackwardsPlatform {
     }
 
     private void onServerLoaded() {
-        if (ProtocolRegistry.SERVER_PROTOCOL >= ProtocolVersion.v1_14.getId()) {
-            BukkitViaLoader loader = (BukkitViaLoader) Via.getManager().getLoader();
+        BukkitViaLoader loader = (BukkitViaLoader) Via.getManager().getLoader();
+        if (ProtocolRegistry.SERVER_PROTOCOL >= ProtocolVersion.v1_16.getVersion()) {
+            loader.storeListener(new FireExtinguishListener(this)).register();
+        }
+        if (ProtocolRegistry.SERVER_PROTOCOL >= ProtocolVersion.v1_14.getVersion()) {
             loader.storeListener(new LecternInteractListener(this)).register();
         }
     }

bukkit/src/main/java/nl/matsv/viabackwards/listener/FireExtinguishListener.java

@@ -0,0 +1,36 @@
+package nl.matsv.viabackwards.listener;
+
+import nl.matsv.viabackwards.BukkitPlugin;
+import nl.matsv.viabackwards.protocol.protocol1_15_2to1_16.Protocol1_15_2To1_16;
+import org.bukkit.Material;
+import org.bukkit.block.Block;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.block.Action;
+import org.bukkit.event.player.PlayerInteractEvent;
+import us.myles.ViaVersion.bukkit.listeners.ViaBukkitListener;
+
+public class FireExtinguishListener extends ViaBukkitListener {
+
+    public FireExtinguishListener(BukkitPlugin plugin) {
+        super(plugin, Protocol1_15_2To1_16.class);
+    }
+
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    public void onFireExtinguish(PlayerInteractEvent event) {
+        if (event.getAction() != Action.LEFT_CLICK_BLOCK) return;
+
+        Block block = event.getClickedBlock();
+        if (block == null) return;
+
+        Player player = event.getPlayer();
+        if (!isOnPipe(player)) return;
+
+        Block relative = block.getRelative(event.getBlockFace());
+        if (relative.getType() == Material.FIRE) {
+            event.setCancelled(true);
+            relative.setType(Material.AIR);
+        }
+    }
+}

bukkit/src/main/java/nl/matsv/viabackwards/listener/LecternInteractListener.java

@@ -21,12 +21,12 @@ public class LecternInteractListener extends ViaBukkitListener {
 
     @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
     public void onLecternInteract(PlayerInteractEvent event) {
-        Player player = event.getPlayer();
-        if (!isOnPipe(player)) return;
-
         Block block = event.getClickedBlock();
         if (block == null || block.getType() != Material.LECTERN) return;
 
+        Player player = event.getPlayer();
+        if (!isOnPipe(player)) return;
+
         Lectern lectern = (Lectern) block.getState();
         ItemStack book = lectern.getInventory().getItem(0);
         if (book == null) return;

bungee/pom.xml

@@ -16,7 +16,7 @@
     <parent>
         <artifactId>viabackwards-parent</artifactId>
         <groupId>nl.matsv</groupId>
-        <version>3.0.0</version>
+        <version>3.2.0</version>
     </parent>
 
     <artifactId>viabackwards-bungee</artifactId>

bungee/src/main/java/nl/matsv/viabackwards/BungeePlugin.java

@@ -21,7 +21,6 @@ public class BungeePlugin extends Plugin implements ViaBackwardsPlatform {
         Via.getManager().addEnableListener(() -> this.init(getDataFolder()));
     }
 
-    // Why is this not a thing in Bungee? O_o
     @Override
     public void disable() {
     }

core/pom.xml

@@ -16,7 +16,7 @@
     <parent>
         <artifactId>viabackwards-parent</artifactId>
         <groupId>nl.matsv</groupId>
-        <version>3.0.0</version>
+        <version>3.2.0</version>
     </parent>
 
     <artifactId>viabackwards-core</artifactId>

core/src/main/java/nl/matsv/viabackwards/ViaBackwardsConfig.java

@@ -13,6 +13,7 @@ public class ViaBackwardsConfig extends Config implements nl.matsv.viabackwards.
     private boolean addCustomEnchantsToLore;
     private boolean addTeamColorToPrefix;
     private boolean fix1_13FacePlayer;
+    private boolean alwaysShowOriginalMobName;
 
     public ViaBackwardsConfig(File configFile) {
         super(configFile);
@@ -28,6 +29,7 @@ public class ViaBackwardsConfig extends Config implements nl.matsv.viabackwards.
         addCustomEnchantsToLore = getBoolean("add-custom-enchants-into-lore", true);
         addTeamColorToPrefix = getBoolean("add-teamcolor-to-prefix", true);
         fix1_13FacePlayer = getBoolean("fix-1_13-face-player", false);
+        alwaysShowOriginalMobName = getBoolean("always-show-original-mob-name", true);
     }
 
     @Override
@@ -45,6 +47,11 @@ public class ViaBackwardsConfig extends Config implements nl.matsv.viabackwards.
         return fix1_13FacePlayer;
     }
 
+    @Override
+    public boolean alwaysShowOriginalMobName() {
+        return alwaysShowOriginalMobName;
+    }
+
     @Override
     public URL getDefaultConfigURL() {
         return getClass().getClassLoader().getResource("assets/viabackwards/config.yml");

core/src/main/java/nl/matsv/viabackwards/api/BackwardsProtocol.java

@@ -1,5 +1,6 @@
 package nl.matsv.viabackwards.api;
 
+import nl.matsv.viabackwards.api.data.BackwardsMappings;
 import org.jetbrains.annotations.Nullable;
 import us.myles.ViaVersion.api.protocol.ClientboundPacketType;
 import us.myles.ViaVersion.api.protocol.Protocol;
@@ -10,21 +11,11 @@ public abstract class BackwardsProtocol<C1 extends ClientboundPacketType, C2 ext
         extends Protocol<C1, C2, S1, S2> {
 
     protected BackwardsProtocol() {
-        super();
-    }
-
-    protected BackwardsProtocol(boolean hasMappingDataToLoad) {
-        super(hasMappingDataToLoad);
     }
 
     protected BackwardsProtocol(@Nullable Class<C1> oldClientboundPacketEnum, @Nullable Class<C2> clientboundPacketEnum,
                                 @Nullable Class<S1> oldServerboundPacketEnum, @Nullable Class<S2> serverboundPacketEnum) {
-        super(oldClientboundPacketEnum, clientboundPacketEnum, oldServerboundPacketEnum, serverboundPacketEnum, false);
-    }
-
-    protected BackwardsProtocol(@Nullable Class<C1> oldClientboundPacketEnum, @Nullable Class<C2> clientboundPacketEnum,
-                                @Nullable Class<S1> oldServerboundPacketEnum, @Nullable Class<S2> serverboundPacketEnum, boolean hasMappingDatatToLoad) {
-        super(oldClientboundPacketEnum, clientboundPacketEnum, oldServerboundPacketEnum, serverboundPacketEnum, hasMappingDatatToLoad);
+        super(oldClientboundPacketEnum, clientboundPacketEnum, oldServerboundPacketEnum, serverboundPacketEnum);
     }
 
     /**
@@ -33,4 +24,15 @@ public abstract class BackwardsProtocol<C1 extends ClientboundPacketType, C2 ext
     protected void executeAsyncAfterLoaded(Class<? extends Protocol> protocolClass, Runnable runnable) {
         ProtocolRegistry.addMappingLoaderFuture(getClass(), protocolClass, runnable);
     }
+
+    @Override
+    public boolean hasMappingDataToLoad() {
+        // Manually load them later, since they depend on VV's mappings
+        return false;
+    }
+
+    @Override
+    public BackwardsMappings getMappingData() {
+        return null;
+    }
 }

core/src/main/java/nl/matsv/viabackwards/api/ViaBackwardsConfig.java

@@ -22,4 +22,11 @@ public interface ViaBackwardsConfig {
      * @return true if enabled
      */
     boolean isFix1_13FacePlayer();
+
+    /**
+     * Always shows the original mob's name instead of only when hovering over them with the cursor.
+     *
+     * @return true if enabled
+     */
+    boolean alwaysShowOriginalMobName();
 }

core/src/main/java/nl/matsv/viabackwards/api/ViaBackwardsPlatform.java

@@ -30,6 +30,10 @@ import nl.matsv.viabackwards.protocol.protocol1_14to1_14_1.Protocol1_14To1_14_1;
 import nl.matsv.viabackwards.protocol.protocol1_15_1to1_15_2.Protocol1_15_1To1_15_2;
 import nl.matsv.viabackwards.protocol.protocol1_15_2to1_16.Protocol1_15_2To1_16;
 import nl.matsv.viabackwards.protocol.protocol1_15to1_15_1.Protocol1_15To1_15_1;
+import nl.matsv.viabackwards.protocol.protocol1_16_2to1_16_3.Protocol1_16_2To1_16_3;
+import nl.matsv.viabackwards.protocol.protocol1_16_3to1_16_4.Protocol1_16_3To1_16_4;
+import nl.matsv.viabackwards.protocol.protocol1_16to1_16_1.Protocol1_16To1_16_1;
+import nl.matsv.viabackwards.protocol.protocol1_16_1to1_16_2.Protocol1_16_1To1_16_2;
 import nl.matsv.viabackwards.protocol.protocol1_9_4to1_10.Protocol1_9_4To1_10;
 import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.protocol.ProtocolVersion;
@@ -42,7 +46,7 @@ import static us.myles.ViaVersion.api.protocol.ProtocolRegistry.registerProtocol
 
 public interface ViaBackwardsPlatform {
 
-    String MINIMUM_VV_VERSION = "3.0.0";
+    String MINIMUM_VV_VERSION = "3.2.0";
 
     /**
      * Initialize ViaBackwards.
@@ -86,6 +90,10 @@ public interface ViaBackwardsPlatform {
         registerProtocol(new Protocol1_15_1To1_15_2(), ProtocolVersion.v1_15_1, ProtocolVersion.v1_15_2);
 
         registerProtocol(new Protocol1_15_2To1_16(), ProtocolVersion.v1_15_2, ProtocolVersion.v1_16);
+        registerProtocol(new Protocol1_16To1_16_1(), ProtocolVersion.v1_16, ProtocolVersion.v1_16_1);
+        registerProtocol(new Protocol1_16_1To1_16_2(), ProtocolVersion.v1_16_1, ProtocolVersion.v1_16_2);
+        registerProtocol(new Protocol1_16_2To1_16_3(), ProtocolVersion.v1_16_2, ProtocolVersion.v1_16_3);
+        registerProtocol(new Protocol1_16_3To1_16_4(), ProtocolVersion.v1_16_3, ProtocolVersion.v1_16_4);
     }
 
     /**
@@ -101,7 +109,7 @@ public interface ViaBackwardsPlatform {
             getLogger().severe("================================");
             getLogger().severe("YOUR VIAVERSION IS OUTDATED");
             getLogger().severe("PLEASE USE VIAVERSION " + MINIMUM_VV_VERSION + " OR NEWER");
-            getLogger().severe("LINK: https://viaversion.com");
+            getLogger().severe("LINK: https://ci.viaversion.com/");
             getLogger().severe("VIABACKWARDS WILL NOW DISABLE");
             getLogger().severe("================================");
 

core/src/main/java/nl/matsv/viabackwards/api/data/BackwardsMappings.java

@@ -0,0 +1,128 @@
+package nl.matsv.viabackwards.api.data;
+
+import com.google.common.base.Preconditions;
+import nl.matsv.viabackwards.api.BackwardsProtocol;
+import org.jetbrains.annotations.Nullable;
+import us.myles.ViaVersion.api.data.MappingData;
+import us.myles.ViaVersion.api.data.Mappings;
+import us.myles.ViaVersion.api.protocol.Protocol;
+import us.myles.ViaVersion.api.protocol.ProtocolRegistry;
+import us.myles.viaversion.libs.fastutil.ints.Int2ObjectMap;
+import us.myles.viaversion.libs.gson.JsonObject;
+
+import java.util.Map;
+
+public class BackwardsMappings extends MappingData {
+
+    private final Class<? extends Protocol> vvProtocolClass;
+    private Int2ObjectMap<MappedItem> backwardsItemMappings;
+    private Map<String, String> backwardsSoundMappings;
+
+    public BackwardsMappings(String oldVersion, String newVersion, @Nullable Class<? extends Protocol> vvProtocolClass) {
+        this(oldVersion, newVersion, vvProtocolClass, false);
+    }
+
+    public BackwardsMappings(String oldVersion, String newVersion, @Nullable Class<? extends Protocol> vvProtocolClass, boolean hasDiffFile) {
+        super(oldVersion, newVersion, hasDiffFile);
+        Preconditions.checkArgument(!vvProtocolClass.isAssignableFrom(BackwardsProtocol.class));
+        this.vvProtocolClass = vvProtocolClass;
+        // Just re-use ViaVersion's item id map
+        loadItems = false;
+    }
+
+    @Override
+    protected void loadExtras(JsonObject oldMappings, JsonObject newMappings, @Nullable JsonObject diffMappings) {
+        if (diffMappings != null) {
+            JsonObject diffItems = diffMappings.getAsJsonObject("items");
+            if (diffItems != null) {
+                backwardsItemMappings = VBMappingDataLoader.loadItemMappings(oldMappings.getAsJsonObject("items"), newMappings.getAsJsonObject("items"), diffItems);
+            }
+
+            JsonObject diffSounds = diffMappings.getAsJsonObject("sounds");
+            if (diffSounds != null) {
+                backwardsSoundMappings = VBMappingDataLoader.objectToMap(diffSounds);
+            }
+        }
+
+        // Just re-use ViaVersion's item id map
+        if (vvProtocolClass != null) {
+            itemMappings = ProtocolRegistry.getProtocol(vvProtocolClass).getMappingData().getItemMappings().inverse();
+        }
+
+        loadVBExtras(oldMappings, newMappings);
+    }
+
+    @Override
+    @Nullable
+    protected Mappings loadFromArray(JsonObject oldMappings, JsonObject newMappings, @Nullable JsonObject diffMappings, String key) {
+        if (!oldMappings.has(key) || !newMappings.has(key)) return null;
+
+        JsonObject diff = diffMappings != null ? diffMappings.getAsJsonObject(key) : null;
+        return new VBMappings(oldMappings.getAsJsonArray(key), newMappings.getAsJsonArray(key), diff, shouldWarnOnMissing(key));
+    }
+
+    @Override
+    @Nullable
+    protected Mappings loadFromObject(JsonObject oldMappings, JsonObject newMappings, @Nullable JsonObject diffMappings, String key) {
+        if (!oldMappings.has(key) || !newMappings.has(key)) return null;
+
+        JsonObject diff = diffMappings != null ? diffMappings.getAsJsonObject(key) : null;
+        return new VBMappings(oldMappings.getAsJsonObject(key), newMappings.getAsJsonObject(key), diff, shouldWarnOnMissing(key));
+    }
+
+    @Override
+    protected JsonObject loadDiffFile() {
+        return VBMappingDataLoader.loadFromDataDir("mapping-" + newVersion + "to" + oldVersion + ".json");
+    }
+
+    /**
+     * To be overridden.
+     */
+    protected void loadVBExtras(JsonObject oldMappings, JsonObject newMappings) {
+    }
+
+    protected boolean shouldWarnOnMissing(String key) {
+        return !key.equals("blocks") && !key.equals("statistics");
+    }
+
+    /**
+     * @see #getMappedItem(int) for custom backwards mappings
+     */
+    @Override
+    public int getNewItemId(int id) {
+        // Don't warn on missing here
+        return this.itemMappings.get(id);
+    }
+
+    @Override
+    public int getNewBlockId(int id) {
+        // Don't warn on missing here
+        return this.blockMappings.getNewId(id);
+    }
+
+    @Override
+    public int getOldItemId(final int id) {
+        // Warn on missing
+        return checkValidity(id, this.itemMappings.inverse().get(id), "item");
+    }
+
+    @Nullable
+    public MappedItem getMappedItem(int id) {
+        return backwardsItemMappings != null ? backwardsItemMappings.get(id) : null;
+    }
+
+    @Nullable
+    public String getMappedNamedSound(String id) {
+        return backwardsSoundMappings != null ? backwardsSoundMappings.get(id) : null;
+    }
+
+    @Nullable
+    public Int2ObjectMap<MappedItem> getBackwardsItemMappings() {
+        return backwardsItemMappings;
+    }
+
+    @Nullable
+    public Map<String, String> getBackwardsSoundMappings() {
+        return backwardsSoundMappings;
+    }
+}

core/src/main/java/nl/matsv/viabackwards/api/data/MappedItem.java

@@ -10,7 +10,7 @@ public class MappedItem {
 
     public MappedItem(int id, String name) {
         this.id = id;
-        this.jsonName = ChatRewriter.legacyTextToJson(ChatColor.RESET + name);
+        this.jsonName = ChatRewriter.legacyTextToJson(ChatColor.RESET + name).toString();
     }
 
     public int getId() {

core/src/main/java/nl/matsv/viabackwards/api/data/VBItemMappings.java

@@ -1,56 +0,0 @@
-package nl.matsv.viabackwards.api.data;
-
-import nl.matsv.viabackwards.ViaBackwards;
-import org.jetbrains.annotations.Nullable;
-import us.myles.ViaVersion.api.Via;
-import us.myles.ViaVersion.api.data.MappingDataLoader;
-import us.myles.viaversion.libs.fastutil.ints.Int2ObjectMap;
-import us.myles.viaversion.libs.fastutil.ints.Int2ObjectOpenHashMap;
-import us.myles.viaversion.libs.gson.JsonElement;
-import us.myles.viaversion.libs.gson.JsonObject;
-
-import java.util.HashMap;
-import java.util.Map;
-
-/**
- * Backwards mappings for newly (!) added items.
- */
-public class VBItemMappings {
-
-    private final Int2ObjectMap<MappedItem> itemMapping;
-
-    public VBItemMappings(JsonObject oldMapping, JsonObject newMapping, JsonObject diffMapping) {
-        Map<Integer, MappedItem> itemMapping = new HashMap<>();
-        for (Map.Entry<String, JsonElement> entry : diffMapping.entrySet()) {
-            JsonObject object = entry.getValue().getAsJsonObject();
-            String mappedIdName = object.getAsJsonPrimitive("id").getAsString();
-            Map.Entry<String, JsonElement> value = MappingDataLoader.findValue(newMapping, mappedIdName);
-            if (value == null) {
-                if (!Via.getConfig().isSuppressConversionWarnings() || Via.getManager().isDebug()) {
-                    ViaBackwards.getPlatform().getLogger().warning("No key for " + mappedIdName + " :( ");
-                }
-                continue;
-            }
-
-            Map.Entry<String, JsonElement> oldEntry = MappingDataLoader.findValue(oldMapping, entry.getKey());
-            if (oldEntry == null) {
-                if (!Via.getConfig().isSuppressConversionWarnings() || Via.getManager().isDebug()) {
-                    ViaBackwards.getPlatform().getLogger().warning("No old entry for " + mappedIdName + " :( ");
-                }
-                continue;
-            }
-
-            int id = Integer.parseInt(oldEntry.getKey());
-            int mappedId = Integer.parseInt(value.getKey());
-            String name = object.getAsJsonPrimitive("name").getAsString();
-            itemMapping.put(id, new MappedItem(mappedId, name));
-        }
-
-        this.itemMapping = new Int2ObjectOpenHashMap<>(itemMapping, 1F);
-    }
-
-    @Nullable
-    public MappedItem getMappedItem(int id) {
-        return itemMapping.get(id);
-    }
-}

core/src/main/java/nl/matsv/viabackwards/api/data/VBMappingDataLoader.java

@@ -4,7 +4,9 @@ import nl.matsv.viabackwards.ViaBackwards;
 import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.data.MappingDataLoader;
 import us.myles.ViaVersion.util.GsonUtil;
-import us.myles.viaversion.libs.gson.JsonArray;
+import us.myles.viaversion.libs.fastutil.ints.Int2ObjectMap;
+import us.myles.viaversion.libs.fastutil.ints.Int2ObjectOpenHashMap;
+import us.myles.viaversion.libs.fastutil.objects.Object2IntMap;
 import us.myles.viaversion.libs.gson.JsonElement;
 import us.myles.viaversion.libs.gson.JsonIOException;
 import us.myles.viaversion.libs.gson.JsonObject;
@@ -16,6 +18,7 @@ import java.io.FileReader;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
+import java.util.HashMap;
 import java.util.Map;
 
 public class VBMappingDataLoader {
@@ -43,6 +46,7 @@ public class VBMappingDataLoader {
         try (InputStreamReader reader = new InputStreamReader(stream)) {
             return GsonUtil.getGson().fromJson(reader, JsonObject.class);
         } catch (IOException e) {
+            e.printStackTrace();
             return null;
         }
     }
@@ -52,10 +56,11 @@ public class VBMappingDataLoader {
     }
 
     public static void mapIdentifiers(short[] output, JsonObject oldIdentifiers, JsonObject newIdentifiers, JsonObject diffIdentifiers, boolean warnOnMissing) {
+        Object2IntMap newIdentifierMap = MappingDataLoader.indexedObjectToMap(newIdentifiers);
         for (Map.Entry<String, JsonElement> entry : oldIdentifiers.entrySet()) {
             String key = entry.getValue().getAsString();
-            Map.Entry<String, JsonElement> value = MappingDataLoader.findValue(newIdentifiers, key);
-            if (value == null) {
+            int mappedId = newIdentifierMap.getInt(key);
+            if (mappedId == -1) {
                 if (diffIdentifiers != null) {
                     // Search in diff mappings
                     JsonPrimitive diffValueJson = diffIdentifiers.getAsJsonPrimitive(key);
@@ -74,11 +79,11 @@ public class VBMappingDataLoader {
                     }
 
                     if (diffValue != null) {
-                        value = MappingDataLoader.findValue(newIdentifiers, diffValue);
+                        mappedId = newIdentifierMap.getInt(diffValue);
                     }
                 }
 
-                if (value == null) {
+                if (mappedId == -1) {
                     // Nothing found :(
                     if (warnOnMissing && !Via.getConfig().isSuppressConversionWarnings() || Via.getManager().isDebug()) {
                         ViaBackwards.getPlatform().getLogger().warning("No key for " + entry.getValue() + " :( ");
@@ -87,39 +92,53 @@ public class VBMappingDataLoader {
                 }
             }
 
-            output[Integer.parseInt(entry.getKey())] = Short.parseShort(value.getKey());
+            output[Integer.parseInt(entry.getKey())] = (short) mappedId;
         }
     }
 
-    public static void mapIdentifiers(short[] output, JsonArray oldIdentifiers, JsonArray newIdentifiers, JsonObject diffIdentifiers, boolean warnOnMissing) {
-        int i = -1;
-        for (JsonElement oldIdentifier : oldIdentifiers) {
-            i++;
-            String key = oldIdentifier.getAsString();
-            Integer index = MappingDataLoader.findIndex(newIdentifiers, key);
-            if (index == null) {
-                // Search in diff mappings
-                if (diffIdentifiers != null) {
-                    JsonPrimitive diffValue = diffIdentifiers.getAsJsonPrimitive(key);
-                    if (diffValue == null) {
-                        if (warnOnMissing && !Via.getConfig().isSuppressConversionWarnings() || Via.getManager().isDebug()) {
-                            ViaBackwards.getPlatform().getLogger().warning("No diff key for " + key + " :( ");
-                        }
-                        continue;
-                    }
-                    String mappedName = diffValue.getAsString();
-                    if (mappedName.isEmpty()) continue; // "empty" remaps
-
-                    index = MappingDataLoader.findIndex(newIdentifiers, mappedName);
-                }
-                if (index == null) {
-                    if (warnOnMissing && !Via.getConfig().isSuppressConversionWarnings() || Via.getManager().isDebug()) {
-                        ViaBackwards.getPlatform().getLogger().warning("No key for " + key + " :( ");
-                    }
-                    continue;
-                }
+    public static Map<String, String> objectToMap(JsonObject object) {
+        Map<String, String> mappings = new HashMap<>();
+        for (Map.Entry<String, JsonElement> entry : object.entrySet()) {
+            String key = entry.getKey();
+            if (key.indexOf(':') == -1) {
+                key = "minecraft:" + key;
             }
-            output[i] = index.shortValue();
+            String value = entry.getValue().getAsString();
+            if (value.indexOf(':') == -1) {
+                value = "minecraft:" + value;
+            }
+            mappings.put(key, value);
         }
+        return mappings;
+    }
+
+    public static Int2ObjectMap<MappedItem> loadItemMappings(JsonObject oldMapping, JsonObject newMapping, JsonObject diffMapping) {
+        Int2ObjectMap<MappedItem> itemMapping = new Int2ObjectOpenHashMap<>(diffMapping.size(), 1F);
+        Object2IntMap newIdenfierMap = MappingDataLoader.indexedObjectToMap(newMapping);
+        Object2IntMap oldIdenfierMap = MappingDataLoader.indexedObjectToMap(oldMapping);
+        for (Map.Entry<String, JsonElement> entry : diffMapping.entrySet()) {
+            JsonObject object = entry.getValue().getAsJsonObject();
+            String mappedIdName = object.getAsJsonPrimitive("id").getAsString();
+            int mappedId = newIdenfierMap.getInt(mappedIdName);
+            if (mappedId == -1) {
+                if (!Via.getConfig().isSuppressConversionWarnings() || Via.getManager().isDebug()) {
+                    ViaBackwards.getPlatform().getLogger().warning("No key for " + mappedIdName + " :( ");
+                }
+                continue;
+            }
+
+            int oldId = oldIdenfierMap.getInt(entry.getKey());
+            if (oldId == -1) {
+                if (!Via.getConfig().isSuppressConversionWarnings() || Via.getManager().isDebug()) {
+                    ViaBackwards.getPlatform().getLogger().warning("No old entry for " + mappedIdName + " :( ");
+                }
+                continue;
+            }
+
+            String name = object.getAsJsonPrimitive("name").getAsString();
+            itemMapping.put(oldId, new MappedItem(mappedId, name));
+        }
+
+        return itemMapping;
     }
 }

core/src/main/java/nl/matsv/viabackwards/api/data/VBMappings.java

@@ -8,18 +8,6 @@ import java.util.Arrays;
 
 public class VBMappings extends Mappings {
 
-    public VBMappings(JsonObject oldMapping, JsonObject newMapping, boolean warnOnMissing) {
-        this(oldMapping, newMapping, null, warnOnMissing);
-    }
-
-    public VBMappings(int size, JsonObject oldMapping, JsonObject newMapping, JsonObject diffMapping) {
-        this(size, oldMapping, newMapping, diffMapping, true);
-    }
-
-    public VBMappings(JsonObject oldMapping, JsonObject newMapping, JsonObject diffMapping) {
-        this(oldMapping, newMapping, diffMapping, true);
-    }
-
     public VBMappings(int size, JsonObject oldMapping, JsonObject newMapping, JsonObject diffMapping, boolean warnOnMissing) {
         super(create(size, oldMapping, newMapping, diffMapping, warnOnMissing));
     }
@@ -28,8 +16,12 @@ public class VBMappings extends Mappings {
         super(create(oldMapping.entrySet().size(), oldMapping, newMapping, diffMapping, warnOnMissing));
     }
 
-    public VBMappings(JsonArray oldMapping, JsonArray newMapping, JsonObject diffMapping) {
-        super(create(oldMapping, newMapping, diffMapping, true));
+    public VBMappings(JsonObject oldMapping, JsonObject newMapping, boolean warnOnMissing) {
+        this(oldMapping, newMapping, null, warnOnMissing);
+    }
+
+    public VBMappings(JsonArray oldMapping, JsonArray newMapping, JsonObject diffMapping, boolean warnOnMissing) {
+        super(oldMapping.size(), oldMapping, newMapping, diffMapping, warnOnMissing);
     }
 
     private static short[] create(int size, JsonObject oldMapping, JsonObject newMapping, JsonObject diffMapping, boolean warnOnMissing) {
@@ -38,11 +30,4 @@ public class VBMappings extends Mappings {
         VBMappingDataLoader.mapIdentifiers(oldToNew, oldMapping, newMapping, diffMapping, warnOnMissing);
         return oldToNew;
     }
-
-    private static short[] create(JsonArray oldMapping, JsonArray newMapping, JsonObject diffMapping, boolean warnOnMissing) {
-        short[] oldToNew = new short[oldMapping.size()];
-        Arrays.fill(oldToNew, (short) -1);
-        VBMappingDataLoader.mapIdentifiers(oldToNew, oldMapping, newMapping, diffMapping, warnOnMissing);
-        return oldToNew;
-    }
 }

core/src/main/java/nl/matsv/viabackwards/api/data/VBSoundMappings.java

@@ -1,43 +0,0 @@
-package nl.matsv.viabackwards.api.data;
-
-import org.jetbrains.annotations.Nullable;
-import us.myles.ViaVersion.api.data.Mappings;
-import us.myles.viaversion.libs.gson.JsonArray;
-import us.myles.viaversion.libs.gson.JsonElement;
-import us.myles.viaversion.libs.gson.JsonObject;
-
-import java.util.HashMap;
-import java.util.Map;
-
-/**
- * Backwards mappings for sound ids and names.
- */
-public class VBSoundMappings {
-
-    private final Map<String, String> namedSoundMappings = new HashMap<>();
-    private final Mappings idMappings;
-
-    public VBSoundMappings(JsonArray oldSounds, JsonArray newSounds, JsonObject diffMapping) {
-        idMappings = new VBMappings(oldSounds, newSounds, diffMapping);
-        for (Map.Entry<String, JsonElement> entry : diffMapping.entrySet()) {
-            String key = entry.getKey();
-            if (key.indexOf(':') == -1) {
-                key = "minecraft:" + key;
-            }
-            String value = entry.getValue().getAsString();
-            if (value.indexOf(':') == -1) {
-                value = "minecraft:" + value;
-            }
-            namedSoundMappings.put(key, value);
-        }
-    }
-
-    @Nullable
-    public String getNewId(String oldId) {
-        return namedSoundMappings.get(oldId);
-    }
-
-    public int getNewId(int oldId) {
-        return idMappings.getNewId(oldId);
-    }
-}

core/src/main/java/nl/matsv/viabackwards/api/entities/storage/EntityData.java

@@ -16,7 +16,7 @@ import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.ChatRewriter;
 public class EntityData {
     private final int id;
     private final int replacementId;
-    private String mobName;
+    private Object mobName;
     private MetaCreator defaultMeta;
 
     public EntityData(int id, int replacementId) {
@@ -47,8 +47,11 @@ public class EntityData {
         return id;
     }
 
+    /**
+     * @return custom mobname, can be either a String or a JsonElement
+     */
     @Nullable
-    public String getMobName() {
+    public Object getMobName() {
         return mobName;
     }
 

core/src/main/java/nl/matsv/viabackwards/api/rewriters/EnchantmentRewriter.java

@@ -70,7 +70,7 @@ public class EnchantmentRewriter {
                 Number level = (Number) ((CompoundTag) enchantmentEntry).get("lvl").getValue();
                 String loreValue = enchantmentName + " " + getRomanNumber(level.intValue());
                 if (jsonFormat) {
-                    loreValue = ChatRewriter.legacyTextToJson(loreValue);
+                    loreValue = ChatRewriter.legacyTextToJson(loreValue).toString();
                 }
 
                 lore.add(new StringTag("", loreValue));

core/src/main/java/nl/matsv/viabackwards/api/rewriters/EntityRewriter.java

@@ -10,7 +10,6 @@ import us.myles.ViaVersion.api.minecraft.metadata.Metadata;
 import us.myles.ViaVersion.api.minecraft.metadata.types.MetaType1_14;
 import us.myles.ViaVersion.api.protocol.ClientboundPacketType;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
-import us.myles.ViaVersion.api.rewriters.IdRewriteFunction;
 import us.myles.ViaVersion.api.type.Type;
 
 import java.util.List;
@@ -18,14 +17,14 @@ import java.util.List;
 public abstract class EntityRewriter<T extends BackwardsProtocol> extends EntityRewriterBase<T> {
 
     protected EntityRewriter(T protocol) {
-        super(protocol, MetaType1_14.OptChat, 2);
+        this(protocol, MetaType1_14.OptChat, MetaType1_14.Boolean);
     }
 
-    protected EntityRewriter(T protocol, MetaType displayType) {
-        super(protocol, displayType, 2);
+    protected EntityRewriter(T protocol, MetaType displayType, MetaType displayVisibilityType) {
+        super(protocol, displayType, 2, displayVisibilityType, 3);
     }
 
-    public void registerSpawnTrackerWithData(ClientboundPacketType packetType, EntityType fallingBlockType, IdRewriteFunction blockStateRewriter) {
+    public void registerSpawnTrackerWithData(ClientboundPacketType packetType, EntityType fallingBlockType) {
         protocol.registerOutgoing(packetType, new PacketRemapper() {
             @Override
             public void registerMap() {
@@ -42,7 +41,7 @@ public abstract class EntityRewriter<T extends BackwardsProtocol> extends Entity
                     EntityType entityType = setOldEntityId(wrapper);
                     if (entityType == fallingBlockType) {
                         int blockState = wrapper.get(Type.INT, 0);
-                        wrapper.set(Type.INT, 0, blockStateRewriter.rewrite(blockState));
+                        wrapper.set(Type.INT, 0, protocol.getMappingData().getNewBlockStateId(blockState));
                     }
                 });
             }

core/src/main/java/nl/matsv/viabackwards/api/rewriters/EntityRewriterBase.java

@@ -12,15 +12,16 @@ import nl.matsv.viabackwards.api.exceptions.RemovedValueException;
 import org.jetbrains.annotations.Nullable;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.Via;
+import us.myles.ViaVersion.api.data.ParticleMappings;
 import us.myles.ViaVersion.api.data.UserConnection;
 import us.myles.ViaVersion.api.entities.EntityType;
 import us.myles.ViaVersion.api.minecraft.metadata.MetaType;
 import us.myles.ViaVersion.api.minecraft.metadata.Metadata;
-import us.myles.ViaVersion.api.minecraft.metadata.types.MetaType1_9;
 import us.myles.ViaVersion.api.protocol.ClientboundPacketType;
 import us.myles.ViaVersion.api.remapper.PacketHandler;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
 import us.myles.ViaVersion.api.type.Type;
+import us.myles.ViaVersion.api.type.types.Particle;
 import us.myles.ViaVersion.exception.CancelException;
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
 import us.myles.viaversion.libs.fastutil.ints.Int2IntMap;
@@ -44,17 +45,18 @@ public abstract class EntityRewriterBase<T extends BackwardsProtocol> extends Re
     private final Map<EntityType, EntityData> entityTypes = new HashMap<>();
     private final List<MetaHandlerSettings> metaHandlers = new ArrayList<>();
     private final MetaType displayNameMetaType;
+    private final MetaType displayVisibilityMetaType;
     private final int displayNameIndex;
+    private final int displayVisibilityIndex;
     protected Int2IntMap typeMapping;
 
-    EntityRewriterBase(T protocol) {
-        this(protocol, MetaType1_9.String, 2);
-    }
-
-    EntityRewriterBase(T protocol, MetaType displayNameMetaType, int displayNameIndex) {
+    EntityRewriterBase(T protocol, MetaType displayNameMetaType, int displayNameIndex,
+                       MetaType displayVisibilityMetaType, int displayVisibilityIndex) {
         super(protocol);
         this.displayNameMetaType = displayNameMetaType;
         this.displayNameIndex = displayNameIndex;
+        this.displayVisibilityMetaType = displayVisibilityMetaType;
+        this.displayVisibilityIndex = displayVisibilityIndex;
     }
 
     protected EntityType getEntityType(UserConnection connection, int id) {
@@ -192,45 +194,21 @@ public abstract class EntityRewriterBase<T extends BackwardsProtocol> extends Re
         Metadata data = storage.get(displayNameIndex);
         if (data != null) {
             EntityData entityData = getEntityData(type);
+            // Set the name if there is no custom name set already
             if (entityData != null && entityData.getMobName() != null
-                    && (data.getValue() == null || ((String) data.getValue()).isEmpty())
+                    && (data.getValue() == null || data.getValue().toString().isEmpty())
                     && data.getMetaType().getTypeID() == displayNameMetaType.getTypeID()) {
                 data.setValue(entityData.getMobName());
+                if (ViaBackwards.getConfig().alwaysShowOriginalMobName()) {
+                    storage.delete(displayVisibilityIndex);
+                    storage.add(new Metadata(displayVisibilityIndex, displayVisibilityMetaType, true));
+                }
             }
         }
 
         return storage;
     }
 
-    public void registerRespawn(ClientboundPacketType packetType) {
-        protocol.registerOutgoing(packetType, new PacketRemapper() {
-            @Override
-            public void registerMap() {
-                map(Type.INT);
-                handler(wrapper -> {
-                    ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
-                    clientWorld.setEnvironment(wrapper.get(Type.INT, 0));
-                });
-            }
-        });
-    }
-
-    public void registerJoinGame(ClientboundPacketType packetType, EntityType playerType) {
-        protocol.registerOutgoing(packetType, new PacketRemapper() {
-            @Override
-            public void registerMap() {
-                map(Type.INT); // 0 - Entity ID
-                map(Type.UNSIGNED_BYTE); // 1 - Gamemode
-                map(Type.INT); // 2 - Dimension
-                handler(wrapper -> {
-                    ClientWorld clientChunks = wrapper.user().get(ClientWorld.class);
-                    clientChunks.setEnvironment(wrapper.get(Type.INT, 1));
-                    getEntityTracker(wrapper.user()).trackEntityType(wrapper.get(Type.INT, 0), playerType);
-                });
-            }
-        });
-    }
-
     /**
      * Helper method to handle player, painting, or xp orb trackers without meta changes.
      */
@@ -291,6 +269,20 @@ public abstract class EntityRewriterBase<T extends BackwardsProtocol> extends Re
         return user.get(EntityTracker.class).get(getProtocol());
     }
 
+    protected void rewriteParticle(Particle particle) {
+        ParticleMappings mappings = protocol.getMappingData().getParticleMappings();
+        int id = particle.getId();
+        if (id == mappings.getBlockId() || id == mappings.getFallingDustId()) {
+            Particle.ParticleData data = particle.getArguments().get(0);
+            data.setValue(protocol.getMappingData().getNewBlockStateId(data.get()));
+        } else if (id == mappings.getItemId()) {
+            Particle.ParticleData data = particle.getArguments().get(0);
+            data.setValue(protocol.getMappingData().getNewItemId(data.get()));
+        }
+
+        particle.setId(protocol.getMappingData().getNewParticleId(id));
+    }
+
     protected abstract EntityType getTypeFromId(int typeId);
 
     public int getOldEntityId(int newId) {

core/src/main/java/nl/matsv/viabackwards/api/rewriters/ItemRewriter.java

@@ -4,28 +4,20 @@ import nl.matsv.viabackwards.api.BackwardsProtocol;
 import nl.matsv.viabackwards.api.data.MappedItem;
 import org.jetbrains.annotations.Nullable;
 import us.myles.ViaVersion.api.minecraft.item.Item;
-import us.myles.ViaVersion.api.rewriters.IdRewriteFunction;
+import us.myles.viaversion.libs.opennbt.tag.builtin.ByteTag;
 import us.myles.viaversion.libs.opennbt.tag.builtin.CompoundTag;
+import us.myles.viaversion.libs.opennbt.tag.builtin.IntTag;
 import us.myles.viaversion.libs.opennbt.tag.builtin.ListTag;
 import us.myles.viaversion.libs.opennbt.tag.builtin.StringTag;
 import us.myles.viaversion.libs.opennbt.tag.builtin.Tag;
 
 public abstract class ItemRewriter<T extends BackwardsProtocol> extends ItemRewriterBase<T> {
 
-    private final MappedItemFunction mappedItemFunction;
     private final TranslatableRewriter translatableRewriter;
 
-    protected ItemRewriter(T protocol, @Nullable TranslatableRewriter translatableRewriter,
-                           @Nullable IdRewriteFunction oldRewriter, @Nullable IdRewriteFunction newRewriter, MappedItemFunction mappedItemFunction) {
-        super(protocol, oldRewriter, newRewriter, true);
-        this.translatableRewriter = translatableRewriter;
-        this.mappedItemFunction = mappedItemFunction;
-    }
-
-    protected ItemRewriter(T protocol, @Nullable TranslatableRewriter translatableRewriter, MappedItemFunction mappedItemFunction) {
+    protected ItemRewriter(T protocol, @Nullable TranslatableRewriter translatableRewriter) {
         super(protocol, true);
         this.translatableRewriter = translatableRewriter;
-        this.mappedItemFunction = mappedItemFunction;
     }
 
     @Override
@@ -33,71 +25,79 @@ public abstract class ItemRewriter<T extends BackwardsProtocol> extends ItemRewr
     public Item handleItemToClient(Item item) {
         if (item == null) return null;
 
-        CompoundTag tag = null;
-        boolean textChanged = false;
-        if (translatableRewriter != null
-                && item.getTag() != null && (tag = item.getTag().get("display")) != null) {
+        CompoundTag display = item.getTag() != null ? item.getTag().get("display") : null;
+        if (translatableRewriter != null && display != null) {
             // Handle name and lore components
-            StringTag name = tag.get("Name");
+            StringTag name = display.get("Name");
             if (name != null) {
-                String newValue = translatableRewriter.processText(name.getValue());
-                if (name.getValue().equals(newValue)) {
-                    textChanged = true;
+                String newValue = translatableRewriter.processText(name.getValue()).toString();
+                if (!newValue.equals(name.getValue())) {
+                    saveNameTag(display, name);
                 }
+
                 name.setValue(newValue);
             }
 
-            ListTag lore = tag.get("Lore");
+            ListTag lore = display.get("Lore");
             if (lore != null) {
-                for (Tag loreEntry : lore) {
-                    if (!(loreEntry instanceof StringTag)) continue;
+                ListTag original = null;
+                boolean changed = false;
+                for (Tag loreEntryTag : lore) {
+                    if (!(loreEntryTag instanceof StringTag)) continue;
 
-                    StringTag stringTag = (StringTag) loreEntry;
-                    String newValue = translatableRewriter.processText(stringTag.getValue());
-                    if (stringTag.getValue().equals(newValue)) {
-                        textChanged = true;
+                    StringTag loreEntry = (StringTag) loreEntryTag;
+                    String newValue = translatableRewriter.processText(loreEntry.getValue()).toString();
+                    if (!changed && !newValue.equals(loreEntry.getValue())) {
+                        changed = true;
+                        original = lore.clone();
                     }
-                    stringTag.setValue(newValue);
+
+                    loreEntry.setValue(newValue);
+                }
+
+                if (changed) {
+                    saveLoreTag(display, original);
                 }
             }
         }
 
-        if (textChanged) {
-            // Backup data for toServer
-            item.getTag().put(createViaNBT(item));
-        }
-
-        MappedItem data = mappedItemFunction.get(item.getIdentifier());
+        MappedItem data = protocol.getMappingData().getMappedItem(item.getIdentifier());
         if (data == null) {
             // Just rewrite the id
             return super.handleItemToClient(item);
         }
 
-        // Backup data for toServer if not already done above
-        if (!textChanged) {
-            if (item.getTag() == null) {
-                item.setTag(new CompoundTag(""));
-            }
-            item.getTag().put(createViaNBT(item));
+        if (item.getTag() == null) {
+            item.setTag(new CompoundTag(""));
         }
 
-        // Set remapped id
+        // Save original id, set remapped id
+        item.getTag().put(new IntTag(nbtTagName + "|id", item.getIdentifier()));
         item.setIdentifier(data.getId());
 
         // Set custom name - only done if there is no original one
-        if (tag == null) {
-            item.getTag().put(tag = new CompoundTag("display"));
+        if (display == null) {
+            item.getTag().put(display = new CompoundTag("display"));
         }
-        if (!tag.contains("Name")) {
-            tag.put(new StringTag("Name", data.getJsonName()));
+        if (!display.contains("Name")) {
+            display.put(new StringTag("Name", data.getJsonName()));
+            display.put(new ByteTag(nbtTagName + "|customName"));
         }
         return item;
     }
 
-    @FunctionalInterface
-    public interface MappedItemFunction {
+    @Override
+    @Nullable
+    public Item handleItemToServer(Item item) {
+        if (item == null) return null;
 
-        @Nullable
-        MappedItem get(int id);
+        super.handleItemToServer(item);
+        if (item.getTag() != null) {
+            IntTag originalId = item.getTag().remove(nbtTagName + "|id");
+            if (originalId != null) {
+                item.setIdentifier(originalId.getValue());
+            }
+        }
+        return item;
     }
 }

core/src/main/java/nl/matsv/viabackwards/api/rewriters/ItemRewriterBase.java

@@ -3,38 +3,29 @@ package nl.matsv.viabackwards.api.rewriters;
 import nl.matsv.viabackwards.api.BackwardsProtocol;
 import org.jetbrains.annotations.Nullable;
 import us.myles.ViaVersion.api.minecraft.item.Item;
-import us.myles.ViaVersion.api.rewriters.IdRewriteFunction;
 import us.myles.viaversion.libs.opennbt.conversion.builtin.CompoundTagConverter;
-import us.myles.viaversion.libs.opennbt.tag.builtin.ByteTag;
 import us.myles.viaversion.libs.opennbt.tag.builtin.CompoundTag;
-import us.myles.viaversion.libs.opennbt.tag.builtin.ShortTag;
+import us.myles.viaversion.libs.opennbt.tag.builtin.ListTag;
+import us.myles.viaversion.libs.opennbt.tag.builtin.StringTag;
 import us.myles.viaversion.libs.opennbt.tag.builtin.Tag;
 
 public abstract class ItemRewriterBase<T extends BackwardsProtocol> extends Rewriter<T> {
 
     protected static final CompoundTagConverter CONVERTER = new CompoundTagConverter();
-    protected final IdRewriteFunction toClientRewriter;
-    protected final IdRewriteFunction toServerRewriter;
     protected final String nbtTagName;
     protected final boolean jsonNameFormat;
 
-    protected ItemRewriterBase(T protocol, @Nullable IdRewriteFunction toClientRewriter, @Nullable IdRewriteFunction toServerRewriter, boolean jsonNameFormat) {
+    protected ItemRewriterBase(T protocol, boolean jsonNameFormat) {
         super(protocol);
-        this.toClientRewriter = toClientRewriter;
-        this.toServerRewriter = toServerRewriter;
         this.jsonNameFormat = jsonNameFormat;
         nbtTagName = "VB|" + protocol.getClass().getSimpleName();
     }
 
-    protected ItemRewriterBase(T protocol, boolean jsonNameFormat) {
-        this(protocol, null, null, jsonNameFormat);
-    }
-
     @Nullable
     public Item handleItemToClient(Item item) {
         if (item == null) return null;
-        if (toClientRewriter != null) {
-            item.setIdentifier(toClientRewriter.rewrite(item.getIdentifier()));
+        if (protocol.getMappingData() != null) {
+            item.setIdentifier(protocol.getMappingData().getNewItemId(item.getIdentifier()));
         }
         return item;
     }
@@ -42,53 +33,42 @@ public abstract class ItemRewriterBase<T extends BackwardsProtocol> extends Rewr
     @Nullable
     public Item handleItemToServer(Item item) {
         if (item == null) return null;
-
-        CompoundTag tag = item.getTag();
-        if (tag == null) {
-            if (toServerRewriter != null) {
-                item.setIdentifier(toServerRewriter.rewrite(item.getIdentifier()));
-            }
-            return item;
-        }
-
-        CompoundTag viaTag = tag.remove(nbtTagName);
-        if (viaTag != null) {
-            short id = (short) viaTag.get("id").getValue();
-            item.setIdentifier(id);
-
-            Tag dataTag = viaTag.get("data");
-            short data = dataTag != null ? (short) dataTag.getValue() : 0;
-            item.setData(data);
-
-            Tag amountTag = viaTag.get("amount");
-            byte amount = amountTag != null ? (byte) amountTag.getValue() : 1;
-            item.setAmount(amount);
-
-            CompoundTag extras = viaTag.get("extras");
-            if (extras != null) {
-                item.setTag(CONVERTER.convert("", CONVERTER.convert(extras)));
-            }
-        } else {
-            // Rewrite id normally
-            if (toServerRewriter != null) {
-                item.setIdentifier(toServerRewriter.rewrite(item.getIdentifier()));
-            }
+        if (protocol.getMappingData() != null) {
+            item.setIdentifier(protocol.getMappingData().getOldItemId(item.getIdentifier()));
         }
+        restoreDisplayTag(item);
         return item;
     }
 
-    protected CompoundTag createViaNBT(Item item) {
-        CompoundTag tag = new CompoundTag(nbtTagName);
-        tag.put(new ShortTag("id", (short) item.getIdentifier()));
-        if (item.getAmount() != 1) {
-            tag.put(new ByteTag("amount", item.getAmount()));
+    protected void saveNameTag(CompoundTag displayTag, StringTag original) {
+        displayTag.put(new StringTag(nbtTagName + "|o" + original.getName(), original.getValue()));
+    }
+
+    protected void saveLoreTag(CompoundTag displayTag, ListTag original) {
+        displayTag.put(new ListTag(nbtTagName + "|o" + original.getName(), original.getValue()));
+    }
+
+    protected void restoreDisplayTag(Item item) {
+        if (item.getTag() == null) return;
+
+        CompoundTag display = item.getTag().get("display");
+        if (display != null) {
+            // Remove custom name / restore original name
+            if (display.remove(nbtTagName + "|customName") != null) {
+                display.remove("Name");
+            } else {
+                restoreDisplayTag(display, "Name");
+            }
+
+            // Restore lore
+            restoreDisplayTag(display, "Lore");
         }
-        if (item.getData() != 0) {
-            tag.put(new ShortTag("data", item.getData()));
+    }
+
+    protected void restoreDisplayTag(CompoundTag displayTag, String tagName) {
+        Tag original = displayTag.remove(nbtTagName + "|o" + tagName);
+        if (original != null) {
+            displayTag.put(original);
         }
-        if (item.getTag() != null) {
-            tag.put(CONVERTER.convert("extras", CONVERTER.convert(item.getTag())));
-        }
-        return tag;
     }
 }

core/src/main/java/nl/matsv/viabackwards/api/rewriters/LegacyBlockItemRewriter.java

@@ -20,13 +20,13 @@ import org.jetbrains.annotations.Nullable;
 import us.myles.ViaVersion.api.minecraft.chunks.Chunk;
 import us.myles.ViaVersion.api.minecraft.chunks.ChunkSection;
 import us.myles.ViaVersion.api.minecraft.item.Item;
-import us.myles.ViaVersion.api.rewriters.IdRewriteFunction;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.ChatRewriter;
 import us.myles.viaversion.libs.fastutil.ints.Int2ObjectMap;
 import us.myles.viaversion.libs.fastutil.ints.Int2ObjectOpenHashMap;
 import us.myles.viaversion.libs.gson.JsonElement;
 import us.myles.viaversion.libs.gson.JsonObject;
 import us.myles.viaversion.libs.gson.JsonPrimitive;
+import us.myles.viaversion.libs.opennbt.tag.builtin.ByteTag;
 import us.myles.viaversion.libs.opennbt.tag.builtin.CompoundTag;
 import us.myles.viaversion.libs.opennbt.tag.builtin.IntTag;
 import us.myles.viaversion.libs.opennbt.tag.builtin.StringTag;
@@ -78,13 +78,9 @@ public abstract class LegacyBlockItemRewriter<T extends BackwardsProtocol> exten
         }
     }
 
-    protected LegacyBlockItemRewriter(T protocol, @Nullable IdRewriteFunction oldRewriter, @Nullable IdRewriteFunction newRewriter) {
-        super(protocol, oldRewriter, newRewriter, false);
-        replacementData = LEGACY_MAPPINGS.get(protocol.getClass().getSimpleName().split("To")[1].replace("_", "."));
-    }
-
     protected LegacyBlockItemRewriter(T protocol) {
-        this(protocol, null, null);
+        super(protocol, false);
+        replacementData = LEGACY_MAPPINGS.get(protocol.getClass().getSimpleName().split("To")[1].replace("_", "."));
     }
 
     @Override
@@ -98,14 +94,7 @@ public abstract class LegacyBlockItemRewriter<T extends BackwardsProtocol> exten
             return super.handleItemToClient(item);
         }
 
-        if (item.getTag() == null) {
-            item.setTag(new CompoundTag(""));
-        }
-
-        // Backup data for toServer
         short originalData = item.getData();
-        item.getTag().put(createViaNBT(item));
-
         item.setIdentifier(data.getId());
         // Keep original data if mapped data is set to -1
         if (data.getData() != -1) {
@@ -114,19 +103,25 @@ public abstract class LegacyBlockItemRewriter<T extends BackwardsProtocol> exten
 
         // Set display name
         if (data.getName() != null) {
-            CompoundTag tag = item.getTag().get("display");
-            if (tag == null) {
-                item.getTag().put(tag = new CompoundTag("display"));
+            if (item.getTag() == null) {
+                item.setTag(new CompoundTag(""));
             }
-            StringTag nameTag = tag.get("Name");
+
+            CompoundTag display = item.getTag().get("display");
+            if (display == null) {
+                item.getTag().put(display = new CompoundTag("display"));
+            }
+
+            StringTag nameTag = display.get("Name");
             if (nameTag == null) {
-                tag.put(nameTag = new StringTag("Name", data.getName()));
+                display.put(nameTag = new StringTag("Name", data.getName()));
+                display.put(new ByteTag(nbtTagName + "|customName"));
             }
 
             // Handle colors
             String value = nameTag.getValue();
             if (value.contains("%vb_color%")) {
-                tag.put(new StringTag("Name", value.replace("%vb_color%", BlockColors.get(originalData))));
+                display.put(new StringTag("Name", value.replace("%vb_color%", BlockColors.get(originalData))));
             }
         }
         return item;
@@ -246,7 +241,7 @@ public abstract class LegacyBlockItemRewriter<T extends BackwardsProtocol> exten
         CompoundTag tag = new CompoundTag("");
         tag.put(new CompoundTag("display"));
         text = ChatColor.RESET + text;
-        ((CompoundTag) tag.get("display")).put(new StringTag("Name", jsonNameFormat ? ChatRewriter.legacyTextToJson(text) : text));
+        ((CompoundTag) tag.get("display")).put(new StringTag("Name", jsonNameFormat ? ChatRewriter.legacyTextToJson(text).toString() : text));
         return tag;
     }
 

core/src/main/java/nl/matsv/viabackwards/api/rewriters/LegacyEntityRewriter.java

@@ -10,10 +10,12 @@ import us.myles.ViaVersion.api.entities.EntityType;
 import us.myles.ViaVersion.api.entities.ObjectType;
 import us.myles.ViaVersion.api.minecraft.metadata.MetaType;
 import us.myles.ViaVersion.api.minecraft.metadata.Metadata;
+import us.myles.ViaVersion.api.minecraft.metadata.types.MetaType1_9;
 import us.myles.ViaVersion.api.protocol.ClientboundPacketType;
 import us.myles.ViaVersion.api.remapper.PacketHandler;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
 import us.myles.ViaVersion.api.type.Type;
+import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
 
 import java.util.HashMap;
 import java.util.List;
@@ -24,11 +26,11 @@ public abstract class LegacyEntityRewriter<T extends BackwardsProtocol> extends
     private final Map<ObjectType, EntityData> objectTypes = new HashMap<>();
 
     protected LegacyEntityRewriter(T protocol) {
-        super(protocol);
+        this(protocol, MetaType1_9.String, MetaType1_9.Boolean);
     }
 
-    protected LegacyEntityRewriter(T protocol, MetaType displayType) {
-        super(protocol, displayType, 2);
+    protected LegacyEntityRewriter(T protocol, MetaType displayType, MetaType displayVisibilityType) {
+        super(protocol, displayType, 2, displayVisibilityType, 3);
     }
 
     protected EntityObjectData mapObjectType(ObjectType oldObjectType, ObjectType replacement, int data) {
@@ -42,6 +44,35 @@ public abstract class LegacyEntityRewriter<T extends BackwardsProtocol> extends
         return objectTypes.get(type);
     }
 
+    protected void registerRespawn(ClientboundPacketType packetType) {
+        protocol.registerOutgoing(packetType, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                map(Type.INT);
+                handler(wrapper -> {
+                    ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
+                    clientWorld.setEnvironment(wrapper.get(Type.INT, 0));
+                });
+            }
+        });
+    }
+
+    protected void registerJoinGame(ClientboundPacketType packetType, EntityType playerType) {
+        protocol.registerOutgoing(packetType, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                map(Type.INT); // 0 - Entity ID
+                map(Type.UNSIGNED_BYTE); // 1 - Gamemode
+                map(Type.INT); // 2 - Dimension
+                handler(wrapper -> {
+                    ClientWorld clientChunks = wrapper.user().get(ClientWorld.class);
+                    clientChunks.setEnvironment(wrapper.get(Type.INT, 1));
+                    getEntityTracker(wrapper.user()).trackEntityType(wrapper.get(Type.INT, 0), playerType);
+                });
+            }
+        });
+    }
+
     protected void registerMetadataRewriter(ClientboundPacketType packetType, Type<List<Metadata>> oldMetaType, Type<List<Metadata>> newMetaType) {
         getProtocol().registerOutgoing(packetType, new PacketRemapper() {
             @Override

core/src/main/java/nl/matsv/viabackwards/api/rewriters/RecipeRewriter.java

@@ -1,33 +0,0 @@
-package nl.matsv.viabackwards.api.rewriters;
-
-import us.myles.ViaVersion.api.PacketWrapper;
-import us.myles.ViaVersion.api.protocol.ClientboundPacketType;
-import us.myles.ViaVersion.api.remapper.PacketRemapper;
-import us.myles.ViaVersion.api.type.Type;
-
-public abstract class RecipeRewriter {
-
-    protected final ItemRewriterBase rewriter;
-
-    protected RecipeRewriter(ItemRewriterBase rewriter) {
-        this.rewriter = rewriter;
-    }
-
-    public abstract void handle(PacketWrapper wrapper, String type) throws Exception;
-
-    public void registerDefaultHandler(ClientboundPacketType packetType) {
-        rewriter.getProtocol().registerOutgoing(packetType, new PacketRemapper() {
-            @Override
-            public void registerMap() {
-                handler(wrapper -> {
-                    int size = wrapper.passthrough(Type.VAR_INT);
-                    for (int i = 0; i < size; i++) {
-                        String type = wrapper.passthrough(Type.STRING).replace("minecraft:", "");
-                        String id = wrapper.passthrough(Type.STRING); // Recipe Identifier
-                        handle(wrapper, type);
-                    }
-                });
-            }
-        });
-    }
-}

core/src/main/java/nl/matsv/viabackwards/api/rewriters/SoundRewriter.java

@@ -3,22 +3,15 @@ package nl.matsv.viabackwards.api.rewriters;
 import nl.matsv.viabackwards.api.BackwardsProtocol;
 import us.myles.ViaVersion.api.protocol.ClientboundPacketType;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
-import us.myles.ViaVersion.api.rewriters.IdRewriteFunction;
 import us.myles.ViaVersion.api.type.Type;
 
-import java.util.function.Function;
-
 public class SoundRewriter extends us.myles.ViaVersion.api.rewriters.SoundRewriter {
 
-    private final Function<String, String> stringIdRewriter;
+    private final BackwardsProtocol protocol;
 
-    public SoundRewriter(BackwardsProtocol protocol, IdRewriteFunction idRewriter, Function<String, String> stringIdRewriter) {
-        super(protocol, idRewriter);
-        this.stringIdRewriter = stringIdRewriter;
-    }
-
-    public SoundRewriter(BackwardsProtocol protocol, IdRewriteFunction idRewriter) {
-        this(protocol, idRewriter, null);
+    public SoundRewriter(BackwardsProtocol protocol) {
+        super(protocol);
+        this.protocol = protocol;
     }
 
     public void registerNamedSound(ClientboundPacketType packetType) {
@@ -28,7 +21,7 @@ public class SoundRewriter extends us.myles.ViaVersion.api.rewriters.SoundRewrit
                 map(Type.STRING); // Sound identifier
                 handler(wrapper -> {
                     String soundId = wrapper.get(Type.STRING, 0);
-                    String mappedId = stringIdRewriter.apply(soundId);
+                    String mappedId = protocol.getMappingData().getMappedNamedSound(soundId);
                     if (mappedId == null) return;
                     if (!mappedId.isEmpty()) {
                         wrapper.set(Type.STRING, 0, mappedId);
@@ -53,7 +46,7 @@ public class SoundRewriter extends us.myles.ViaVersion.api.rewriters.SoundRewrit
                     }
 
                     String soundId = wrapper.read(Type.STRING);
-                    String mappedId = stringIdRewriter.apply(soundId);
+                    String mappedId = protocol.getMappingData().getMappedNamedSound(soundId);
                     if (mappedId == null) {
                         // No mapping found
                         wrapper.write(Type.STRING, soundId);

core/src/main/java/nl/matsv/viabackwards/api/rewriters/TranslatableRewriter.java

@@ -5,20 +5,18 @@ import nl.matsv.viabackwards.api.BackwardsProtocol;
 import nl.matsv.viabackwards.api.data.VBMappingDataLoader;
 import us.myles.ViaVersion.api.protocol.ClientboundPacketType;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
+import us.myles.ViaVersion.api.rewriters.ComponentRewriter;
 import us.myles.ViaVersion.api.type.Type;
 import us.myles.ViaVersion.packets.State;
-import us.myles.ViaVersion.util.GsonUtil;
 import us.myles.viaversion.libs.gson.JsonElement;
 import us.myles.viaversion.libs.gson.JsonObject;
-import us.myles.viaversion.libs.gson.JsonPrimitive;
 
 import java.util.HashMap;
 import java.util.Map;
 
-public class TranslatableRewriter {
+public class TranslatableRewriter extends ComponentRewriter {
 
     private static final Map<String, Map<String, String>> TRANSLATABLES = new HashMap<>();
-    protected final BackwardsProtocol protocol;
     protected final Map<String, String> newTranslatables;
 
     public static void loadTranslatables() {
@@ -37,20 +35,21 @@ public class TranslatableRewriter {
     }
 
     public TranslatableRewriter(BackwardsProtocol protocol, String sectionIdentifier) {
-        this.protocol = protocol;
+        super(protocol);
         final Map<String, String> newTranslatables = TRANSLATABLES.get(sectionIdentifier);
         if (newTranslatables == null) {
             ViaBackwards.getPlatform().getLogger().warning("Error loading " + sectionIdentifier + " translatables!");
             this.newTranslatables = new HashMap<>();
-        } else
+        } else {
             this.newTranslatables = newTranslatables;
+        }
     }
 
     public void registerPing() {
         protocol.registerOutgoing(State.LOGIN, 0x00, 0x00, new PacketRemapper() {
             @Override
             public void registerMap() {
-                handler(wrapper -> wrapper.write(Type.STRING, processText(wrapper.read(Type.STRING))));
+                handler(wrapper -> processText(wrapper.passthrough(Type.COMPONENT)));
             }
         });
     }
@@ -59,7 +58,7 @@ public class TranslatableRewriter {
         protocol.registerOutgoing(packetType, new PacketRemapper() {
             @Override
             public void registerMap() {
-                handler(wrapper -> wrapper.write(Type.STRING, processText(wrapper.read(Type.STRING))));
+                handler(wrapper -> processText(wrapper.passthrough(Type.COMPONENT)));
             }
         });
     }
@@ -68,23 +67,7 @@ public class TranslatableRewriter {
         protocol.registerOutgoing(packetType, new PacketRemapper() {
             @Override
             public void registerMap() {
-                handler(wrapper -> wrapper.write(Type.STRING, processText(wrapper.read(Type.STRING))));
-            }
-        });
-    }
-
-    public void registerBossBar(ClientboundPacketType packetType) {
-        protocol.registerOutgoing(packetType, new PacketRemapper() {
-            @Override
-            public void registerMap() {
-                map(Type.UUID);
-                map(Type.VAR_INT);
-                handler(wrapper -> {
-                    int action = wrapper.get(Type.VAR_INT, 0);
-                    if (action == 0 || action == 3) {
-                        wrapper.write(Type.STRING, processText(wrapper.read(Type.STRING)));
-                    }
-                });
+                handler(wrapper -> processText(wrapper.passthrough(Type.COMPONENT)));
             }
         });
     }
@@ -95,7 +78,7 @@ public class TranslatableRewriter {
             public void registerMap() {
                 map(Type.UNSIGNED_BYTE); // Id
                 map(Type.STRING); // Window Type
-                handler(wrapper -> wrapper.write(Type.STRING, processText(wrapper.read(Type.STRING))));
+                handler(wrapper -> processText(wrapper.passthrough(Type.COMPONENT)));
             }
         });
     }
@@ -106,36 +89,7 @@ public class TranslatableRewriter {
             public void registerMap() {
                 map(Type.VAR_INT); // Id
                 map(Type.VAR_INT); // Window Type
-                handler(wrapper -> wrapper.write(Type.STRING, processText(wrapper.read(Type.STRING))));
-            }
-        });
-    }
-
-    public void registerCombatEvent(ClientboundPacketType packetType) {
-        protocol.registerOutgoing(packetType, new PacketRemapper() {
-            @Override
-            public void registerMap() {
-                handler(wrapper -> {
-                    if (wrapper.passthrough(Type.VAR_INT) == 2) {
-                        wrapper.passthrough(Type.VAR_INT);
-                        wrapper.passthrough(Type.INT);
-                        wrapper.write(Type.STRING, processText(wrapper.read(Type.STRING)));
-                    }
-                });
-            }
-        });
-    }
-
-    public void registerTitle(ClientboundPacketType packetType) {
-        protocol.registerOutgoing(packetType, new PacketRemapper() {
-            @Override
-            public void registerMap() {
-                handler(wrapper -> {
-                    int action = wrapper.passthrough(Type.VAR_INT);
-                    if (action >= 0 && action <= 2) {
-                        wrapper.write(Type.STRING, processText(wrapper.read(Type.STRING)));
-                    }
-                });
+                handler(wrapper -> processText(wrapper.passthrough(Type.COMPONENT)));
             }
         });
     }
@@ -145,84 +99,18 @@ public class TranslatableRewriter {
             @Override
             public void registerMap() {
                 handler(wrapper -> {
-                    wrapper.write(Type.STRING, processText(wrapper.read(Type.STRING)));
-                    wrapper.write(Type.STRING, processText(wrapper.read(Type.STRING)));
+                    processText(wrapper.passthrough(Type.COMPONENT));
+                    processText(wrapper.passthrough(Type.COMPONENT));
                 });
             }
         });
     }
 
-    public String processText(String value) {
-        JsonElement root = GsonUtil.getJsonParser().parse(value);
-        processText(root);
-        return root.toString();
-    }
-
-    protected void processText(JsonElement element) {
-        if (element == null || element.isJsonNull()) return;
-        if (element.isJsonArray()) {
-            processAsArray(element);
-            return;
-        }
-        if (element.isJsonPrimitive()) {
-            handleText(element.getAsJsonPrimitive());
-            return;
-        }
-
-        JsonObject object = element.getAsJsonObject();
-        JsonPrimitive text = object.getAsJsonPrimitive("text");
-        if (text != null) {
-            handleText(text);
-        }
-
-        JsonElement translate = object.get("translate");
-        if (translate != null) {
-            handleTranslate(object, translate.getAsString());
-
-            JsonElement with = object.get("with");
-            if (with != null) {
-                processAsArray(with);
-            }
-        }
-
-        JsonElement extra = object.get("extra");
-        if (extra != null) {
-            processAsArray(extra);
-        }
-
-        JsonObject hoverEvent = object.getAsJsonObject("hoverEvent");
-        if (hoverEvent != null) {
-            handleHoverEvent(hoverEvent);
-        }
-    }
-
-    protected void handleText(JsonPrimitive text) {
-        // In case this is needed in the future
-    }
-
+    @Override
     protected void handleTranslate(JsonObject root, String translate) {
         String newTranslate = newTranslatables.get(translate);
         if (newTranslate != null) {
             root.addProperty("translate", newTranslate);
         }
     }
-
-    protected void handleHoverEvent(JsonObject hoverEvent) {
-        String action = hoverEvent.getAsJsonPrimitive("action").getAsString();
-        if (action.equals("show_text")) {
-            JsonElement value = hoverEvent.get("value");
-            processText(value != null ? value : hoverEvent.get("contents"));
-        } else if (action.equals("show_entity")) {
-            JsonObject contents = hoverEvent.getAsJsonObject("contents");
-            if (contents != null) {
-                processText(contents.get("name"));
-            }
-        }
-    }
-
-    private void processAsArray(JsonElement element) {
-        for (JsonElement jsonElement : element.getAsJsonArray()) {
-            processText(jsonElement);
-        }
-    }
 }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_10to1_11/packets/BlockItemPackets1_11.java

@@ -270,7 +270,7 @@ public class BlockItemPackets1_11 extends LegacyBlockItemRewriter<Protocol1_10To
             public void registerMap() {
                 map(Type.UNSIGNED_BYTE); // 0 - Window ID
                 map(Type.STRING); // 1 - Window Type
-                map(Type.STRING); // 2 - Title
+                map(Type.COMPONENT); // 2 - Title
                 map(Type.UNSIGNED_BYTE); // 3 - Slots
 
                 handler(new PacketHandler() {
@@ -278,8 +278,9 @@ public class BlockItemPackets1_11 extends LegacyBlockItemRewriter<Protocol1_10To
                     public void handle(PacketWrapper wrapper) throws Exception {
                         int entityId = -1;
                         // Passthrough Entity ID
-                        if (wrapper.get(Type.STRING, 0).equals("EntityHorse"))
+                        if (wrapper.get(Type.STRING, 0).equals("EntityHorse")) {
                             entityId = wrapper.passthrough(Type.INT);
+                        }
 
                         // Track Inventory
                         String inventory = wrapper.get(Type.STRING, 0);
@@ -288,8 +289,9 @@ public class BlockItemPackets1_11 extends LegacyBlockItemRewriter<Protocol1_10To
                         windowTracker.setEntityId(entityId);
 
                         // Change llama slotcount to the donkey one
-                        if (isLlama(wrapper.user()))
+                        if (isLlama(wrapper.user())) {
                             wrapper.set(Type.UNSIGNED_BYTE, 1, (short) 17);
+                        }
                     }
                 });
             }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_10to1_11/packets/EntityPackets1_11.java

@@ -297,9 +297,7 @@ public class EntityPackets1_11 extends LegacyEntityRewriter<Protocol1_10To1_11>
             Metadata data = e.getData();
             data.setId(13);
             data.setMetaType(MetaType1_9.VarInt);
-
-            data.setValue((int) data.getValue() == 1 ? 2 : 4);
-
+            data.setValue(((Number) data.getValue()).intValue() == 1 ? 2 : 4);
             return data;
         });
 

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_10to1_11/packets/PlayerPackets1_11.java

@@ -10,15 +10,18 @@
 
 package nl.matsv.viabackwards.protocol.protocol1_10to1_11.packets;
 
+import net.md_5.bungee.api.chat.BaseComponent;
+import net.md_5.bungee.api.chat.TextComponent;
+import net.md_5.bungee.chat.ComponentSerializer;
 import nl.matsv.viabackwards.protocol.protocol1_10to1_11.Protocol1_10To1_11;
 import us.myles.ViaVersion.api.PacketWrapper;
-import us.myles.ViaVersion.api.remapper.PacketHandler;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
 import us.myles.ViaVersion.api.remapper.ValueTransformer;
 import us.myles.ViaVersion.api.type.Type;
-import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.ChatRewriter;
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.ClientboundPackets1_9_3;
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.ServerboundPackets1_9_3;
+import us.myles.viaversion.libs.gson.JsonElement;
+import us.myles.viaversion.libs.gson.JsonObject;
 
 public class PlayerPackets1_11 {
     private static final ValueTransformer<Short, Float> TO_NEW_FLOAT = new ValueTransformer<Short, Float>(Type.FLOAT) {
@@ -34,30 +37,25 @@ public class PlayerPackets1_11 {
             public void registerMap() {
                 map(Type.VAR_INT); // 0 - Action
 
-                handler(new PacketHandler() {
-                    @Override
-                    public void handle(PacketWrapper wrapper) throws Exception {
-                        int action = wrapper.get(Type.VAR_INT, 0);
+                handler(wrapper -> {
+                    int action = wrapper.get(Type.VAR_INT, 0);
 
-                        // Handle the new ActionBar
-                        if (action == 2) {
-                            // Convert to the old actionbar way
-                            PacketWrapper actionbar = new PacketWrapper(0x0F, null, wrapper.user()); // Chat Message packet
-                            String msg = wrapper.read(Type.STRING);
-                            msg = ChatRewriter.jsonTextToLegacy(msg);
-                            msg = "{\"text\":\"" + msg + "\"}";
-                            actionbar.write(Type.STRING, msg);
-                            actionbar.write(Type.BYTE, (byte) 2); // Above hotbar
+                    if (action == 2) { // Handle the new ActionBar
+                        JsonElement message = wrapper.read(Type.COMPONENT);
 
-                            actionbar.send(Protocol1_10To1_11.class);
+                        wrapper.clearPacket();
+                        wrapper.setId(ClientboundPackets1_9_3.CHAT_MESSAGE.ordinal());
 
-                            wrapper.cancel(); // Cancel the title packet
-                            return;
-                        }
+                        // https://bugs.mojang.com/browse/MC-119145to
+                        BaseComponent[] parsed = ComponentSerializer.parse(message.toString());
+                        String legacy = TextComponent.toLegacyText(parsed);
+                        message = new JsonObject();
+                        message.getAsJsonObject().addProperty("text", legacy);
 
-                        if (action > 2) {
-                            wrapper.set(Type.VAR_INT, 0, action - 1); // Move everything one position down
-                        }
+                        wrapper.write(Type.COMPONENT, message);
+                        wrapper.write(Type.BYTE, (byte) 2);
+                    } else if (action > 2) {
+                        wrapper.set(Type.VAR_INT, 0, action - 1); // Move everything one position down
                     }
                 });
             }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_11_1to1_12/Protocol1_11_1To1_12.java

@@ -18,11 +18,15 @@ import nl.matsv.viabackwards.protocol.protocol1_11_1to1_12.packets.ChatPackets1_
 import nl.matsv.viabackwards.protocol.protocol1_11_1to1_12.packets.EntityPackets1_12;
 import nl.matsv.viabackwards.protocol.protocol1_11_1to1_12.packets.SoundPackets1_12;
 import us.myles.ViaVersion.api.data.UserConnection;
+import us.myles.ViaVersion.api.remapper.PacketRemapper;
+import us.myles.ViaVersion.api.type.Type;
 import us.myles.ViaVersion.protocols.protocol1_12to1_11_1.ClientboundPackets1_12;
 import us.myles.ViaVersion.protocols.protocol1_12to1_11_1.ServerboundPackets1_12;
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.ClientboundPackets1_9_3;
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.ServerboundPackets1_9_3;
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
+import us.myles.ViaVersion.protocols.protocol1_9to1_8.Protocol1_9To1_8;
+import us.myles.viaversion.libs.gson.JsonElement;
 
 public class Protocol1_11_1To1_12 extends BackwardsProtocol<ClientboundPackets1_12, ClientboundPackets1_9_3, ServerboundPackets1_12, ServerboundPackets1_9_3> {
 
@@ -40,6 +44,19 @@ public class Protocol1_11_1To1_12 extends BackwardsProtocol<ClientboundPackets1_
         new SoundPackets1_12(this).register();
         new ChatPackets1_12(this).register();
 
+        registerOutgoing(ClientboundPackets1_12.TITLE, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(wrapper -> {
+                    int action = wrapper.passthrough(Type.VAR_INT);
+                    if (action >= 0 && action <= 2) {
+                        JsonElement component = wrapper.read(Type.COMPONENT);
+                        wrapper.write(Type.COMPONENT, Protocol1_9To1_8.fixJson(component.toString()));
+                    }
+                });
+            }
+        });
+
         cancelOutgoing(ClientboundPackets1_12.ADVANCEMENTS);
         cancelOutgoing(ClientboundPackets1_12.UNLOCK_RECIPES);
         cancelOutgoing(ClientboundPackets1_12.SELECT_ADVANCEMENTS_TAB);

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_11_1to1_12/data/ShoulderTracker.java

@@ -31,7 +31,7 @@ public class ShoulderTracker extends StoredObject {
     public void update() {
         PacketWrapper wrapper = new PacketWrapper(0x0F, null, getUser());
 
-        wrapper.write(Type.STRING, Protocol1_9To1_8.fixJson(generateString()));
+        wrapper.write(Type.COMPONENT, Protocol1_9To1_8.fixJson(generateString()));
         wrapper.write(Type.BYTE, (byte) 2);
 
         try {

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_11_1to1_12/packets/BlockItemPackets1_12.java

@@ -57,8 +57,8 @@ public class BlockItemPackets1_12 extends LegacyBlockItemRewriter<Protocol1_11_1
                         if (columns <= 0) return;
 
                         short rows = wrapper.passthrough(Type.UNSIGNED_BYTE);
-                        wrapper.passthrough(Type.BYTE);  //X
-                        wrapper.passthrough(Type.BYTE);  //Z
+                        wrapper.passthrough(Type.UNSIGNED_BYTE); // X
+                        wrapper.passthrough(Type.UNSIGNED_BYTE); // Z
                         byte[] data = wrapper.read(Type.BYTE_ARRAY_PRIMITIVE);
                         for (int i = 0; i < data.length; i++) {
                             short color = (short) (data[i] & 0xFF);

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_11_1to1_12/packets/ChatPackets1_12.java

@@ -10,22 +10,28 @@
 
 package nl.matsv.viabackwards.protocol.protocol1_11_1to1_12.packets;
 
-import nl.matsv.viabackwards.ViaBackwards;
 import nl.matsv.viabackwards.api.rewriters.Rewriter;
 import nl.matsv.viabackwards.protocol.protocol1_11_1to1_12.Protocol1_11_1To1_12;
 import nl.matsv.viabackwards.protocol.protocol1_11_1to1_12.data.AdvancementTranslations;
-import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
+import us.myles.ViaVersion.api.rewriters.ComponentRewriter;
 import us.myles.ViaVersion.api.type.Type;
 import us.myles.ViaVersion.protocols.protocol1_12to1_11_1.ClientboundPackets1_12;
-import us.myles.ViaVersion.util.GsonUtil;
 import us.myles.viaversion.libs.gson.JsonElement;
 import us.myles.viaversion.libs.gson.JsonObject;
 
-import java.util.Map;
-
 public class ChatPackets1_12 extends Rewriter<Protocol1_11_1To1_12> {
 
+    private final ComponentRewriter componentRewriter = new ComponentRewriter() {
+        @Override
+        protected void handleTranslate(JsonObject object, String translate) {
+            String text = AdvancementTranslations.get(translate);
+            if (text != null) {
+                object.addProperty("translate", text);
+            }
+        }
+    };
+
     public ChatPackets1_12(Protocol1_11_1To1_12 protocol) {
         super(protocol);
     }
@@ -35,68 +41,11 @@ public class ChatPackets1_12 extends Rewriter<Protocol1_11_1To1_12> {
         protocol.registerOutgoing(ClientboundPackets1_12.CHAT_MESSAGE, new PacketRemapper() {
             @Override
             public void registerMap() {
-                map(Type.STRING); // 0 - Json Data
-                map(Type.BYTE); // 1 - Position
-
                 handler(wrapper -> {
-                    try {
-                        JsonObject object = GsonUtil.getJsonParser().parse(wrapper.get(Type.STRING, 0)).getAsJsonObject();
-                        // Skip if the root doesn't contain translate
-                        if (object.has("translate")) {
-                            handleTranslations(object);
-                        }
-
-                        ChatItemRewriter.toClient(object, wrapper.user());
-                        wrapper.set(Type.STRING, 0, object.toString());
-                    } catch (Exception e) {
-                        // Only print if ViaVer debug is enabled
-                        if (Via.getManager().isDebug()) {
-                            ViaBackwards.getPlatform().getLogger().severe("Failed to handle translations");
-                            e.printStackTrace();
-                        }
-                    }
+                    JsonElement element = wrapper.passthrough(Type.COMPONENT);
+                    componentRewriter.processText(element);
                 });
             }
         });
-
-    }
-
-    // improve this, not copying will cause ConcurrentModificationException
-    public void handleTranslations(JsonObject object) {
-        JsonObject copiedObj = copy(object);
-
-        if (object.isJsonObject()) {
-            for (Map.Entry<String, JsonElement> entry : copiedObj.entrySet()) {
-                // Get the text that doesn't exist for 1.11 <
-
-                if (entry.getKey().equalsIgnoreCase("translate")) {
-                    String translate = entry.getValue().getAsString();
-                    String text = AdvancementTranslations.get(translate);
-                    if (text != null) {
-                        object.addProperty("translate", text);
-                    }
-                }
-                // Handle arrays
-                if (entry.getValue().isJsonArray())
-                    for (JsonElement element : object.get(entry.getKey()).getAsJsonArray())
-                        if (element.isJsonObject())
-                            handleTranslations(element.getAsJsonObject());
-
-                // Handle objects
-                if (entry.getValue().isJsonObject())
-                    handleTranslations(object.get(entry.getKey()).getAsJsonObject());
-            }
-        }
-    }
-
-    public JsonObject copy(JsonObject object) {
-        JsonObject result = new JsonObject();
-        for (Map.Entry<String, JsonElement> entry : object.entrySet()) {
-            if (entry.getValue().isJsonObject())
-                result.add(entry.getKey(), copy(entry.getValue().getAsJsonObject()));
-            else
-                result.add(entry.getKey(), entry.getValue());
-        }
-        return result;
     }
 }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_12_2to1_13/Protocol1_12_2To1_13.java

@@ -36,6 +36,7 @@ import us.myles.viaversion.libs.gson.JsonObject;
 
 public class Protocol1_12_2To1_13 extends BackwardsProtocol<ClientboundPackets1_13, ClientboundPackets1_12_1, ServerboundPackets1_13, ServerboundPackets1_12_1> {
 
+    public static final BackwardsMappings MAPPINGS = new BackwardsMappings();
     private BlockItemPackets1_13 blockItemPackets;
 
     public Protocol1_12_2To1_13() {
@@ -45,7 +46,7 @@ public class Protocol1_12_2To1_13 extends BackwardsProtocol<ClientboundPackets1_
     @Override
     protected void registerPackets() {
         executeAsyncAfterLoaded(Protocol1_13To1_12_2.class, () -> {
-            BackwardsMappings.init();
+            MAPPINGS.load();
             PaintingMapping.init();
             Via.getManager().getProviders().register(BackwardsBlockEntityProvider.class, new BackwardsBlockEntityProvider());
         });
@@ -54,7 +55,7 @@ public class Protocol1_12_2To1_13 extends BackwardsProtocol<ClientboundPackets1_
             @Override
             protected void handleTranslate(JsonObject root, String translate) {
                 String newTranslate = newTranslatables.get(translate);
-                if (newTranslate != null || (newTranslate = BackwardsMappings.translateMappings.get(translate)) != null) {
+                if (newTranslate != null || (newTranslate = getMappingData().getTranslateMappings().get(translate)) != null) {
                     root.addProperty("translate", newTranslate);
                 }
             }
@@ -117,4 +118,9 @@ public class Protocol1_12_2To1_13 extends BackwardsProtocol<ClientboundPackets1_
     public BlockItemPackets1_13 getBlockItemPackets() {
         return blockItemPackets;
     }
+
+    @Override
+    public BackwardsMappings getMappingData() {
+        return MAPPINGS;
+    }
 }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_12_2to1_13/block_entity_handlers/PistonHandler.java

@@ -1,6 +1,6 @@
 package nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.block_entity_handlers;
 
-import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.data.BackwardsMappings;
+import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.Protocol1_12_2To1_13;
 import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.providers.BackwardsBlockEntityProvider;
 import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.data.MappingDataLoader;
@@ -40,7 +40,7 @@ public class PistonHandler implements BackwardsBlockEntityProvider.BackwardsBloc
                 addEntries(entry.getKey(), entry.getValue());
             }
         } else {
-            JsonObject mappings = MappingDataLoader.getMappingsCache().get("mapping-1.13.json").getAsJsonObject("blocks");
+            JsonObject mappings = MappingDataLoader.getMappingsCache().get("mapping-1.13.json").getAsJsonObject("blockstates");
             for (Map.Entry<String, JsonElement> blockState : mappings.entrySet()) {
                 String key = blockState.getValue().getAsString();
                 if (!key.contains("piston")) continue;
@@ -52,7 +52,7 @@ public class PistonHandler implements BackwardsBlockEntityProvider.BackwardsBloc
 
     // There doesn't seem to be a nicer way around it :(
     private void addEntries(String data, int id) {
-        id = BackwardsMappings.blockMappings.getNewId(id);
+        id = Protocol1_12_2To1_13.MAPPINGS.getNewBlockStateId(id);
         pistonIds.put(data, id);
 
         String substring = data.substring(10);
@@ -68,6 +68,8 @@ public class PistonHandler implements BackwardsBlockEntityProvider.BackwardsBloc
     @Override
     public CompoundTag transform(UserConnection user, int blockId, CompoundTag tag) {
         CompoundTag blockState = tag.get("blockState");
+        if (blockState == null) return tag;
+
         String dataFromTag = getDataFromTag(blockState);
         if (dataFromTag == null) return tag;
 

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_12_2to1_13/data/BackwardsMappings.java

@@ -11,17 +11,16 @@
 package nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.data;
 
 import nl.matsv.viabackwards.ViaBackwards;
-import nl.matsv.viabackwards.api.data.VBItemMappings;
-import nl.matsv.viabackwards.api.data.VBMappingDataLoader;
 import nl.matsv.viabackwards.api.data.VBMappings;
-import nl.matsv.viabackwards.api.data.VBSoundMappings;
+import org.jetbrains.annotations.Nullable;
 import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.data.MappingDataLoader;
 import us.myles.ViaVersion.api.data.Mappings;
-import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.data.MappingData;
+import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.Protocol1_13To1_12_2;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.data.StatisticMappings;
 import us.myles.viaversion.libs.fastutil.ints.Int2ObjectMap;
 import us.myles.viaversion.libs.fastutil.ints.Int2ObjectOpenHashMap;
+import us.myles.viaversion.libs.fastutil.objects.Object2IntMap;
 import us.myles.viaversion.libs.gson.JsonElement;
 import us.myles.viaversion.libs.gson.JsonObject;
 import us.myles.viaversion.libs.gson.JsonPrimitive;
@@ -30,40 +29,34 @@ import java.util.Arrays;
 import java.util.HashMap;
 import java.util.Map;
 
-public class BackwardsMappings {
-    public static final Int2ObjectMap<String> statisticMappings = new Int2ObjectOpenHashMap<>();
-    public static final Map<String, String> translateMappings = new HashMap<>();
-    public static BlockMappingsShortArray blockMappings;
-    public static VBSoundMappings soundMappings;
-    public static VBItemMappings itemMappings;
-    public static Mappings enchantmentMappings;
+public class BackwardsMappings extends nl.matsv.viabackwards.api.data.BackwardsMappings {
+    private final Int2ObjectMap<String> statisticMappings = new Int2ObjectOpenHashMap<>();
+    private final Map<String, String> translateMappings = new HashMap<>();
+    private Mappings enchantmentMappings;
 
-    public static void init() {
-        ViaBackwards.getPlatform().getLogger().info("Loading 1.13 -> 1.12.2 mappings...");
-        JsonObject mapping1_12 = MappingDataLoader.getMappingsCache().get("mapping-1.12.json");
-        JsonObject mapping1_13 = MappingDataLoader.getMappingsCache().get("mapping-1.13.json");
-        JsonObject mapping1_12_2to1_13 = VBMappingDataLoader.loadFromDataDir("mapping-1.12.2to1.13.json");
+    public BackwardsMappings() {
+        super("1.13", "1.12", Protocol1_13To1_12_2.class, true);
+    }
 
-        blockMappings = new BlockMappingsShortArray(mapping1_13.getAsJsonObject("blocks"), mapping1_12.getAsJsonObject("blocks"), mapping1_12_2to1_13.getAsJsonObject("blockstates"));
-        itemMappings = new VBItemMappings(mapping1_13.getAsJsonObject("items"), mapping1_12.getAsJsonObject("items"), mapping1_12_2to1_13.getAsJsonObject("items"));
-        soundMappings = new VBSoundMappings(mapping1_13.getAsJsonArray("sounds"), mapping1_12.getAsJsonArray("sounds"), mapping1_12_2to1_13.getAsJsonObject("sounds"));
-        enchantmentMappings = new VBMappings(mapping1_13.getAsJsonObject("enchantments"), mapping1_12.getAsJsonObject("enchantments"), false);
-
-        for (Map.Entry<String, Integer> entry : StatisticMappings.statistics.entrySet()) {
+    @Override
+    public void loadVBExtras(JsonObject oldMappings, JsonObject newMappings) {
+        enchantmentMappings = new VBMappings(oldMappings.getAsJsonObject("enchantments"), newMappings.getAsJsonObject("enchantments"), false);
+        for (Map.Entry<String, Integer> entry : StatisticMappings.CUSTOM_STATS.entrySet()) {
             statisticMappings.put(entry.getValue().intValue(), entry.getKey());
         }
-        for (Map.Entry<String, String> entry : MappingData.translateMapping.entrySet()) {
+        for (Map.Entry<String, String> entry : Protocol1_13To1_12_2.MAPPINGS.getTranslateMapping().entrySet()) {
             translateMappings.put(entry.getValue(), entry.getKey());
         }
     }
 
     // Has lots of compat layers, so we can't use the default Via method
     private static void mapIdentifiers(short[] output, JsonObject newIdentifiers, JsonObject oldIdentifiers, JsonObject mapping) {
+        Object2IntMap newIdentifierMap = MappingDataLoader.indexedObjectToMap(oldIdentifiers);
         for (Map.Entry<String, JsonElement> entry : newIdentifiers.entrySet()) {
             String key = entry.getValue().getAsString();
-            Map.Entry<String, JsonElement> value = MappingDataLoader.findValue(oldIdentifiers, key);
+            int value = newIdentifierMap.getInt(key);
             short hardId = -1;
-            if (value == null) {
+            if (value == -1) {
                 JsonPrimitive replacement = mapping.getAsJsonPrimitive(key);
                 int propertyIndex;
                 if (replacement == null && (propertyIndex = key.indexOf('[')) != -1) {
@@ -73,12 +66,12 @@ public class BackwardsMappings {
                     if (replacement.getAsString().startsWith("id:")) {
                         String id = replacement.getAsString().replace("id:", "");
                         hardId = Short.parseShort(id);
-                        value = MappingDataLoader.findValue(oldIdentifiers, oldIdentifiers.getAsJsonPrimitive(id).getAsString());
+                        value = newIdentifierMap.getInt(oldIdentifiers.getAsJsonPrimitive(id).getAsString());
                     } else {
-                        value = MappingDataLoader.findValue(oldIdentifiers, replacement.getAsString());
+                        value = newIdentifierMap.getInt(replacement.getAsString());
                     }
                 }
-                if (value == null) {
+                if (value == -1) {
                     if (!Via.getConfig().isSuppressConversionWarnings() || Via.getManager().isDebug()) {
                         if (replacement != null) {
                             ViaBackwards.getPlatform().getLogger().warning("No key for " + entry.getValue() + "/" + replacement.getAsString() + " :( ");
@@ -89,20 +82,38 @@ public class BackwardsMappings {
                     continue;
                 }
             }
-            output[Integer.parseInt(entry.getKey())] = hardId != -1 ? hardId : Short.parseShort(value.getKey());
+            output[Integer.parseInt(entry.getKey())] = hardId != -1 ? hardId : (short) value;
         }
     }
 
-    public static class BlockMappingsShortArray {
-        private final short[] oldToNew = new short[8582];
-
-        private BlockMappingsShortArray(JsonObject newIdentifiers, JsonObject oldIdentifiers, JsonObject mapping) {
+    @Override
+    @Nullable
+    protected Mappings loadFromObject(JsonObject oldMappings, JsonObject newMappings, @Nullable JsonObject diffMappings, String key) {
+        if (key.equals("blockstates")) {
+            short[] oldToNew = new short[8582];
             Arrays.fill(oldToNew, (short) -1);
-            mapIdentifiers(oldToNew, newIdentifiers, oldIdentifiers, mapping);
+            mapIdentifiers(oldToNew, oldMappings.getAsJsonObject("blockstates"), newMappings.getAsJsonObject("blocks"), diffMappings.getAsJsonObject("blockstates"));
+            return new Mappings(oldToNew);
+        } else {
+            return super.loadFromObject(oldMappings, newMappings, diffMappings, key);
         }
+    }
 
-        public int getNewId(int old) {
-            return old >= 0 && old < oldToNew.length ? oldToNew[old] : -1;
-        }
+    @Override
+    protected int checkValidity(int id, int mappedId, String type) {
+        // Don't warn for missing ids here
+        return mappedId;
+    }
+
+    public Int2ObjectMap<String> getStatisticMappings() {
+        return statisticMappings;
+    }
+
+    public Map<String, String> getTranslateMappings() {
+        return translateMappings;
+    }
+
+    public Mappings getEnchantmentMappings() {
+        return enchantmentMappings;
     }
 }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_12_2to1_13/data/ParticleMapping.java

@@ -11,7 +11,6 @@
 package nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.data;
 
 import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.Protocol1_12_2To1_13;
-import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.packets.BlockItemPackets1_13;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.minecraft.item.Item;
 import us.myles.ViaVersion.api.type.Type;
@@ -35,13 +34,17 @@ public class ParticleMapping {
             }
 
             private int[] rewrite(int newType) {
-                int blockType = BlockItemPackets1_13.toOldId(newType);
+                int blockType = Protocol1_12_2To1_13.MAPPINGS.getNewBlockStateId(newType);
 
                 int type = blockType >> 4;
                 int meta = blockType & 15;
-
                 return new int[]{type + (meta << 12)};
             }
+
+            @Override
+            public boolean isBlockHandler() {
+                return true;
+            }
         };
 
         particles = new ParticleData[]{
@@ -148,11 +151,15 @@ public class ParticleMapping {
         return new ParticleData(replacementId, handler);
     }
 
-    interface ParticleHandler {
+    public interface ParticleHandler {
 
         int[] rewrite(Protocol1_12_2To1_13 protocol, PacketWrapper wrapper) throws Exception;
 
         int[] rewrite(Protocol1_12_2To1_13 protocol, List<Particle.ParticleData> data);
+
+        default boolean isBlockHandler() {
+            return false;
+        }
     }
 
     public static final class ParticleData {

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_12_2to1_13/packets/BlockItemPackets1_13.java

@@ -15,7 +15,6 @@ import nl.matsv.viabackwards.ViaBackwards;
 import nl.matsv.viabackwards.api.rewriters.EnchantmentRewriter;
 import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.Protocol1_12_2To1_13;
 import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.block_entity_handlers.FlowerPotHandler;
-import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.data.BackwardsMappings;
 import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.providers.BackwardsBlockEntityProvider;
 import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.storage.BackwardsBlockStorage;
 import us.myles.ViaVersion.api.PacketWrapper;
@@ -33,8 +32,8 @@ import us.myles.ViaVersion.api.type.Type;
 import us.myles.ViaVersion.protocols.protocol1_12_1to1_12.ServerboundPackets1_12_1;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.ChatRewriter;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.ClientboundPackets1_13;
+import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.Protocol1_13To1_12_2;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.data.BlockIdData;
-import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.data.MappingData;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.data.SpawnEggRewriter;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.types.Chunk1_13Type;
 import us.myles.ViaVersion.protocols.protocol1_9_1_2to1_9_3_4.types.Chunk1_9_3_4Type;
@@ -61,23 +60,10 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
     private final String extraNbtTag;
 
     public BlockItemPackets1_13(Protocol1_12_2To1_13 protocol) {
-        super(protocol, null, id -> BackwardsMappings.itemMappings.getMappedItem(id));
+        super(protocol, null);
         extraNbtTag = "VB|" + protocol.getClass().getSimpleName() + "|2";
     }
 
-    public static int toOldId(int oldId) {
-        if (oldId < 0) {
-            oldId = 0; // Some plugins use negative numbers to clear blocks, remap them to air.
-        }
-        int newId = BackwardsMappings.blockMappings.getNewId(oldId);
-        if (newId != -1)
-            return newId;
-
-        ViaBackwards.getPlatform().getLogger().warning("Missing block completely " + oldId);
-        // Default stone
-        return 1 << 4;
-    }
-
     public static boolean isDamageable(int id) {
         return id >= 256 && id <= 259 // iron shovel, pickaxe, axe, flint and steel
                 || id == 261 // bow
@@ -101,7 +87,7 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
                     @Override
                     public void handle(PacketWrapper wrapper) throws Exception {
                         int itemId = wrapper.read(Type.VAR_INT);
-                        int oldId = MappingData.oldToNewItems.inverse().get(itemId);
+                        int oldId = protocol.getMappingData().getItemMappings().get(itemId);
                         if (oldId != -1) {
                             Optional<String> eggEntityId = SpawnEggRewriter.getEntityId(oldId);
                             if (eggEntityId.isPresent()) {
@@ -220,7 +206,7 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
                         BackwardsBlockStorage storage = wrapper.user().get(BackwardsBlockStorage.class);
                         storage.checkAndStore(position, blockState);
 
-                        wrapper.write(Type.VAR_INT, toOldId(blockState));
+                        wrapper.write(Type.VAR_INT, protocol.getMappingData().getNewBlockStateId(blockState));
 
                         // Flower pot special treatment
                         flowerPotSpecialTreatment(wrapper.user(), blockState, position);
@@ -246,9 +232,9 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
                             int chunkZ = wrapper.get(Type.INT, 1);
                             int block = record.getBlockId();
                             Position position = new Position(
-                                    (record.getHorizontal() >> 4 & 15) + (chunkX * 16),
+                                    record.getSectionX() + (chunkX * 16),
                                     record.getY(),
-                                    (record.getHorizontal() & 15) + (chunkZ * 16));
+                                    record.getSectionZ() + (chunkZ * 16));
 
                             // Store if needed
                             storage.checkAndStore(position, block);
@@ -257,7 +243,7 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
                             flowerPotSpecialTreatment(wrapper.user(), block, position);
 
                             // Change to old id
-                            record.setBlockId(toOldId(block));
+                            record.setBlockId(protocol.getMappingData().getNewBlockStateId(block));
                         }
                     }
                 });
@@ -357,7 +343,7 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
                         for (int p = 0; p < section.getPaletteSize(); p++) {
                             int old = section.getPaletteEntry(p);
                             if (old != 0) {
-                                int oldId = toOldId(old);
+                                int oldId = protocol.getMappingData().getNewBlockStateId(old);
                                 section.setPaletteEntry(p, oldId);
                             }
                         }
@@ -413,9 +399,9 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
                         int id = wrapper.get(Type.INT, 0);
                         int data = wrapper.get(Type.INT, 1);
                         if (id == 1010) { // Play record
-                            wrapper.set(Type.INT, 1, MappingData.oldToNewItems.inverse().get(data) >> 4);
+                            wrapper.set(Type.INT, 1, protocol.getMappingData().getItemMappings().get(data) >> 4);
                         } else if (id == 2001) { // Block break + block break sound
-                            data = toOldId(data);
+                            data = protocol.getMappingData().getNewBlockStateId(data);
                             int blockId = data >> 4;
                             int blockData = data & 0xF;
                             wrapper.set(Type.INT, 1, (blockId & 0xFFF) | (blockData << 12));
@@ -441,7 +427,7 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
                             byte z = wrapper.read(Type.BYTE);
                             byte direction = wrapper.read(Type.BYTE);
                             if (wrapper.read(Type.BOOLEAN)) {
-                                wrapper.read(Type.STRING);
+                                wrapper.read(Type.COMPONENT);
                             }
                             if (type > 9) {
                                 wrapper.set(Type.VAR_INT, 1, wrapper.get(Type.VAR_INT, 1) - 1);
@@ -478,7 +464,7 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
                     // Enchantment table
                     if (property >= 4 && property <= 6) {
                         short oldId = wrapper.get(Type.SHORT, 1);
-                        wrapper.set(Type.SHORT, 1, (short) BackwardsMappings.enchantmentMappings.getNewId(oldId));
+                        wrapper.set(Type.SHORT, 1, (short) protocol.getMappingData().getEnchantmentMappings().getNewId(oldId));
                     }
                 });
             }
@@ -541,12 +527,9 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
             // Look for custom mappings
             super.handleItemToClient(item);
 
-            // No custom mapping found, look at VV mappings
-            if (item.getIdentifier() == originalId) {
-                int oldId = MappingData.oldToNewItems.inverse().get(item.getIdentifier());
-                if (oldId != -1) {
-                    rawId = itemIdToRaw(oldId, item, tag);
-                } else if (item.getIdentifier() == 362) { // base/colorless shulker box
+            // Handle one-way special case
+            if (item.getIdentifier() == -1) {
+                if (originalId == 362) { // base/colorless shulker box
                     rawId = 0xe50000; // purple shulker box
                 } else {
                     if (!Via.getConfig().isSuppressConversionWarnings() || Via.getManager().isDebug()) {
@@ -592,8 +575,8 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
             if (display != null) {
                 StringTag name = display.get("Name");
                 if (name instanceof StringTag) {
-                    StringTag via = display.remove(extraNbtTag + "|Name");
-                    name.setValue(via != null ? via.getValue() : ChatRewriter.jsonTextToLegacy(name.getValue()));
+                    display.put(new StringTag(extraNbtTag + "|Name", name.getValue()));
+                    name.setValue(ChatRewriter.jsonTextToLegacy(name.getValue()));
                 }
             }
 
@@ -625,6 +608,8 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
     }
 
     private void rewriteCanPlaceToClient(CompoundTag tag, String tagName) {
+        // The tag was manually created incorrectly so ignore rewriting it
+        if (!(tag.get(tagName) instanceof ListTag)) return;
         ListTag blockTag = tag.get(tagName);
         if (blockTag == null) return;
 
@@ -666,7 +651,7 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
                 lore.add(new StringTag("", mappedEnchantmentId + " " + EnchantmentRewriter.getRomanNumber(level)));
                 noMapped.add(enchantmentEntry);
             } else if (!newId.isEmpty()) {
-                Short oldId = MappingData.oldEnchantmentsIds.inverse().get(newId);
+                Short oldId = Protocol1_13To1_12_2.MAPPINGS.getOldEnchantmentsIds().inverse().get(newId);
                 if (oldId == null) {
                     if (!newId.startsWith("viaversion:legacy/")) {
                         // Custom enchant (?)
@@ -788,8 +773,8 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
                 CompoundTag displayTag = (CompoundTag) display;
                 StringTag name = displayTag.get("Name");
                 if (name instanceof StringTag) {
-                    displayTag.put(new StringTag(extraNbtTag + "|Name", name.getValue()));
-                    name.setValue(ChatRewriter.legacyTextToJson(name.getValue()));
+                    StringTag via = displayTag.remove(extraNbtTag + "|Name");
+                    name.setValue(via != null ? via.getValue() : ChatRewriter.legacyTextToJson(name.getValue()).toString());
                 }
             }
 
@@ -828,14 +813,15 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
         int identifier = item.getIdentifier();
         item.setIdentifier(rawId);
         super.handleItemToServer(item);
+
         // Mapped with original data, we can return here
-        if (item.getIdentifier() != rawId) return item;
+        if (item.getIdentifier() != rawId && item.getIdentifier() != -1) return item;
 
         // Set to legacy id again
         item.setIdentifier(identifier);
 
         int newId = -1;
-        if (!MappingData.oldToNewItems.containsKey(rawId)) {
+        if (!protocol.getMappingData().getItemMappings().inverse().containsKey(rawId)) {
             if (!isDamageable(item.getIdentifier()) && item.getIdentifier() != 358) { // Map
                 if (tag == null) item.setTag(tag = new CompoundTag("tag"));
                 tag.put(new IntTag(extraNbtTag, originalId)); // Data will be lost, saving original id
@@ -845,7 +831,7 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
                 newId = 362; // directly set the new id -> base/colorless shulker box
             } else if (item.getIdentifier() == 31 && item.getData() == 0) { // Shrub was removed
                 rawId = 32 << 4; // Dead Bush
-            } else if (MappingData.oldToNewItems.containsKey(rawId & ~0xF)) {
+            } else if (protocol.getMappingData().getItemMappings().inverse().containsKey(rawId & ~0xF)) {
                 rawId &= ~0xF; // Remove data
             } else {
                 if (!Via.getConfig().isSuppressConversionWarnings() || Via.getManager().isDebug()) {
@@ -856,7 +842,7 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
         }
 
         if (newId == -1) {
-            newId = MappingData.oldToNewItems.get(rawId);
+            newId = protocol.getMappingData().getItemMappings().inverse().get(rawId);
         }
 
         item.setIdentifier(newId);
@@ -865,6 +851,7 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
     }
 
     private void rewriteCanPlaceToServer(CompoundTag tag, String tagName) {
+        if (!(tag.get(tagName) instanceof ListTag)) return;
         ListTag blockTag = tag.remove(extraNbtTag + "|" + tagName);
         if (blockTag != null) {
             tag.put(ConverterRegistry.convertToTag(tagName, ConverterRegistry.convertToValue(blockTag)));
@@ -917,7 +904,7 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
             if (dummyEnchant && oldId == 0 && level == 0) {
                 continue; //Skip dummy enchatment
             }
-            String newId = MappingData.oldEnchantmentsIds.get(oldId);
+            String newId = Protocol1_13To1_12_2.MAPPINGS.getOldEnchantmentsIds().get(oldId);
             if (newId == null) {
                 newId = "viaversion:legacy/" + oldId;
             }
@@ -1001,7 +988,7 @@ public class BlockItemPackets1_13 extends nl.matsv.viabackwards.api.rewriters.It
             // Create the flowerpot
             PacketWrapper blockCreate = new PacketWrapper(0x0B, null, user);
             blockCreate.write(Type.POSITION, position);
-            blockCreate.write(Type.VAR_INT, toOldId(blockState));
+            blockCreate.write(Type.VAR_INT, Protocol1_12_2To1_13.MAPPINGS.getNewBlockStateId(blockState));
             blockCreate.send(Protocol1_12_2To1_13.class, true);
 
             // Send a block entity update

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_12_2to1_13/packets/EntityPackets1_13.java

@@ -89,7 +89,7 @@ public class EntityPackets1_13 extends LegacyEntityRewriter<Protocol1_12_2To1_13
                         Entity1_13Types.ObjectType type = optionalType.get();
                         if (type == Entity1_13Types.ObjectType.FALLING_BLOCK) {
                             int blockState = wrapper.get(Type.INT, 0);
-                            int combined = BlockItemPackets1_13.toOldId(blockState);
+                            int combined = Protocol1_12_2To1_13.MAPPINGS.getNewBlockStateId(blockState);
                             combined = ((combined >> 4) & 0xFFF) | ((combined & 0xF) << 12);
                             wrapper.set(Type.INT, 0, combined);
                         } else if (type == Entity1_13Types.ObjectType.ITEM_FRAME) {
@@ -323,7 +323,7 @@ public class EntityPackets1_13 extends LegacyEntityRewriter<Protocol1_12_2To1_13
         // Rewrite Custom Name from Chat to String
         registerMetaHandler().filter(Entity1_13Types.EntityType.ENTITY, true, 2).handle(e -> {
             Metadata meta = e.getData();
-            String value = (String) meta.getValue();
+            String value = meta.getValue().toString();
             if (value.isEmpty()) return meta;
             meta.setValue(ChatRewriter.jsonTextToLegacy(value));
             return meta;
@@ -382,6 +382,11 @@ public class EntityPackets1_13 extends LegacyEntityRewriter<Protocol1_12_2To1_13
             int secondArg = 0;
             int[] particleArgs = data.rewriteMeta(protocol, particle.getArguments());
             if (particleArgs != null && particleArgs.length != 0) {
+                if (data.getHandler().isBlockHandler() && particleArgs[0] == 0) {
+                    // Air doesn't have a break particle for sub 1.13 clients -> glass pane
+                    particleArgs[0] = 102;
+                }
+
                 firstArg = particleArgs[0];
                 secondArg = particleArgs.length == 2 ? particleArgs[1] : 0;
             }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_12_2to1_13/packets/PlayerPacket1_13.java

@@ -4,7 +4,6 @@ import com.google.common.base.Joiner;
 import nl.matsv.viabackwards.ViaBackwards;
 import nl.matsv.viabackwards.api.rewriters.Rewriter;
 import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.Protocol1_12_2To1_13;
-import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.data.BackwardsMappings;
 import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.data.ParticleMapping;
 import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.storage.TabCompleteStorage;
 import nl.matsv.viabackwards.utils.ChatUtil;
@@ -21,6 +20,7 @@ import us.myles.ViaVersion.protocols.protocol1_12_1to1_12.ServerboundPackets1_12
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.ChatRewriter;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.ClientboundPackets1_13;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.packets.InventoryPackets;
+import us.myles.viaversion.libs.gson.JsonElement;
 
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
@@ -138,8 +138,15 @@ public class PlayerPacket1_13 extends Rewriter<Protocol1_12_2To1_13> {
 
                         int[] data = old.rewriteData(protocol, wrapper);
                         if (data != null) {
-                            for (int i : data)
+                            if (old.getHandler().isBlockHandler() && data[0] == 0) {
+                                // Cancel air block particles
+                                wrapper.cancel();
+                                return;
+                            }
+
+                            for (int i : data) {
                                 wrapper.write(Type.VAR_INT, i);
+                            }
                         }
                     }
                 });
@@ -171,7 +178,7 @@ public class PlayerPacket1_13 extends Rewriter<Protocol1_12_2To1_13> {
                                 packetWrapper.passthrough(Type.VAR_INT);
                                 packetWrapper.passthrough(Type.VAR_INT);
                                 if (packetWrapper.passthrough(Type.BOOLEAN)) {
-                                    packetWrapper.passthrough(Type.STRING);
+                                    packetWrapper.passthrough(Type.COMPONENT);
                                 }
                             } else if (action == 1) { // Update Game Mode
                                 packetWrapper.passthrough(Type.VAR_INT);
@@ -179,7 +186,7 @@ public class PlayerPacket1_13 extends Rewriter<Protocol1_12_2To1_13> {
                                 packetWrapper.passthrough(Type.VAR_INT);
                             } else if (action == 3) { // Update Display Name
                                 if (packetWrapper.passthrough(Type.BOOLEAN)) {
-                                    packetWrapper.passthrough(Type.STRING);
+                                    packetWrapper.passthrough(Type.COMPONENT);
                                 }
                             } else if (action == 4) { // Remove Player
                                 storage.usernames.remove(uuid);
@@ -200,9 +207,12 @@ public class PlayerPacket1_13 extends Rewriter<Protocol1_12_2To1_13> {
                     public void handle(PacketWrapper wrapper) throws Exception {
                         byte mode = wrapper.get(Type.BYTE, 0);
                         if (mode == 0 || mode == 2) {
-                            String value = wrapper.read(Type.STRING);
+                            String value = wrapper.read(Type.COMPONENT).toString();
                             value = ChatRewriter.jsonTextToLegacy(value);
-                            if (value.length() > 32) value = value.substring(0, 32);
+                            if (value.length() > 32) {
+                                value = value.substring(0, 32);
+                            }
+
                             wrapper.write(Type.STRING, value);
                             int type = wrapper.read(Type.VAR_INT);
                             wrapper.write(Type.STRING, type == 1 ? "hearts" : "integer");
@@ -225,7 +235,9 @@ public class PlayerPacket1_13 extends Rewriter<Protocol1_12_2To1_13> {
                             String displayName = wrapper.read(Type.STRING);
                             displayName = ChatRewriter.jsonTextToLegacy(displayName);
                             displayName = ChatUtil.removeUnusedColor(displayName, 'f');
-                            if (displayName.length() > 32) displayName = displayName.substring(0, 32);
+                            if (displayName.length() > 32) {
+                                displayName = displayName.substring(0, 32);
+                            }
                             wrapper.write(Type.STRING, displayName);
 
                             byte flags = wrapper.read(Type.BYTE);
@@ -237,9 +249,10 @@ public class PlayerPacket1_13 extends Rewriter<Protocol1_12_2To1_13> {
                                 colour = -1;
                             }
 
-                            String prefix = wrapper.read(Type.STRING);
-                            String suffix = wrapper.read(Type.STRING);
-                            prefix = prefix == null || prefix.equals("null") ? "" : ChatRewriter.jsonTextToLegacy(prefix);
+                            JsonElement prefixComponent = wrapper.read(Type.COMPONENT);
+                            JsonElement suffixComponent = wrapper.read(Type.COMPONENT);
+
+                            String prefix = prefixComponent == null || prefixComponent.isJsonNull() ? "" : ChatRewriter.jsonTextToLegacy(prefixComponent.toString());
                             if (ViaBackwards.getConfig().addTeamColorTo1_13Prefix()) {
                                 prefix += "§" + (colour > -1 && colour <= 15 ? Integer.toHexString(colour) : "r");
                             }
@@ -248,10 +261,11 @@ public class PlayerPacket1_13 extends Rewriter<Protocol1_12_2To1_13> {
                             if (prefix.length() > 16) prefix = prefix.substring(0, 16);
                             if (prefix.endsWith("§")) prefix = prefix.substring(0, prefix.length() - 1);
 
-                            suffix = suffix == null || suffix.equals("null") ? "" : ChatRewriter.jsonTextToLegacy(suffix);
-                            suffix = ChatUtil.removeUnusedColor(suffix, 'f');
+                            String suffix = suffixComponent == null || suffixComponent.isJsonNull() ? "" : ChatRewriter.jsonTextToLegacy(suffixComponent.toString());
+                            suffix = ChatUtil.removeUnusedColor(suffix, '\0'); // Don't remove white coloring
                             if (suffix.length() > 16) suffix = suffix.substring(0, 16);
                             if (suffix.endsWith("§")) suffix = suffix.substring(0, suffix.length() - 1);
+
                             wrapper.write(Type.STRING, prefix);
                             wrapper.write(Type.STRING, suffix);
 
@@ -527,7 +541,7 @@ public class PlayerPacket1_13 extends Rewriter<Protocol1_12_2To1_13> {
                                     newSize--;
                                     continue;
                                 case 8:
-                                    name = BackwardsMappings.statisticMappings.get(statisticId);
+                                    name = protocol.getMappingData().getStatisticMappings().get(statisticId);
                                     if (name == null) {
                                         wrapper.read(Type.VAR_INT);
                                         newSize--;

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_12_2to1_13/packets/SoundPackets1_13.java

@@ -3,7 +3,6 @@ package nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.packets;
 import nl.matsv.viabackwards.ViaBackwards;
 import nl.matsv.viabackwards.api.rewriters.Rewriter;
 import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.Protocol1_12_2To1_13;
-import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.data.BackwardsMappings;
 import nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.data.NamedSoundMapping;
 import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
@@ -27,7 +26,7 @@ public class SoundPackets1_13 extends Rewriter<Protocol1_12_2To1_13> {
                 handler(wrapper -> {
                     String newSound = wrapper.get(Type.STRING, 0);
                     String oldSound = NamedSoundMapping.getOldId(newSound);
-                    if (oldSound != null || (oldSound = BackwardsMappings.soundMappings.getNewId(newSound)) != null) {
+                    if (oldSound != null || (oldSound = protocol.getMappingData().getMappedNamedSound(newSound)) != null) {
                         wrapper.set(Type.STRING, 0, oldSound);
                     } else if (!Via.getConfig().isSuppressConversionWarnings()) {
                         ViaBackwards.getPlatform().getLogger().warning("Unknown named sound in 1.13->1.12 protocol: " + newSound);
@@ -52,7 +51,7 @@ public class SoundPackets1_13 extends Rewriter<Protocol1_12_2To1_13> {
 
                     String sound;
                     if ((flags & 0x02) != 0) {
-                        sound = BackwardsMappings.soundMappings.getNewId(wrapper.read(Type.STRING));
+                        sound = protocol.getMappingData().getMappedNamedSound(wrapper.read(Type.STRING));
                         if (sound == null) {
                             sound = "";
                         }
@@ -72,7 +71,7 @@ public class SoundPackets1_13 extends Rewriter<Protocol1_12_2To1_13> {
                 map(Type.VAR_INT);
                 handler(wrapper -> {
                     int newSound = wrapper.get(Type.VAR_INT, 0);
-                    int oldSound = BackwardsMappings.soundMappings.getNewId(newSound);
+                    int oldSound = protocol.getMappingData().getSoundMappings().getNewId(newSound);
                     if (oldSound == -1) {
                         wrapper.cancel();
                     } else {

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_13_1to1_13_2/Protocol1_13_1To1_13_2.java

@@ -49,8 +49,8 @@ public class Protocol1_13_1To1_13_2 extends BackwardsProtocol<ClientboundPackets
 
                             // Display data
                             if (wrapper.passthrough(Type.BOOLEAN)) {
-                                wrapper.passthrough(Type.STRING); // Title
-                                wrapper.passthrough(Type.STRING); // Description
+                                wrapper.passthrough(Type.COMPONENT); // Title
+                                wrapper.passthrough(Type.COMPONENT); // Description
                                 Item icon = wrapper.read(Type.FLAT_VAR_INT_ITEM);
                                 wrapper.write(Type.FLAT_ITEM, icon);
                                 wrapper.passthrough(Type.VAR_INT); // Frame type

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_13_2to1_14/Protocol1_13_2To1_14.java

@@ -1,10 +1,9 @@
 package nl.matsv.viabackwards.protocol.protocol1_13_2to1_14;
 
-import nl.matsv.viabackwards.ViaBackwards;
 import nl.matsv.viabackwards.api.BackwardsProtocol;
+import nl.matsv.viabackwards.api.data.BackwardsMappings;
 import nl.matsv.viabackwards.api.entities.storage.EntityTracker;
 import nl.matsv.viabackwards.api.rewriters.TranslatableRewriter;
-import nl.matsv.viabackwards.protocol.protocol1_13_2to1_14.data.BackwardsMappings;
 import nl.matsv.viabackwards.protocol.protocol1_13_2to1_14.packets.BlockItemPackets1_14;
 import nl.matsv.viabackwards.protocol.protocol1_13_2to1_14.packets.EntityPackets1_14;
 import nl.matsv.viabackwards.protocol.protocol1_13_2to1_14.packets.PlayerPackets1_14;
@@ -14,17 +13,18 @@ import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.data.UserConnection;
 import us.myles.ViaVersion.api.remapper.PacketHandler;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
+import us.myles.ViaVersion.api.rewriters.StatisticsRewriter;
 import us.myles.ViaVersion.api.type.Type;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.ClientboundPackets1_13;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.ServerboundPackets1_13;
 import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.ClientboundPackets1_14;
 import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.Protocol1_14To1_13_2;
 import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.ServerboundPackets1_14;
-import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.data.MappingData;
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
 
 public class Protocol1_13_2To1_14 extends BackwardsProtocol<ClientboundPackets1_14, ClientboundPackets1_13, ServerboundPackets1_14, ServerboundPackets1_13> {
 
+    public static final BackwardsMappings MAPPINGS = new BackwardsMappings("1.14", "1.13.2", Protocol1_14To1_13_2.class, true);
     private BlockItemPackets1_14 blockItemPackets;
     private EntityPackets1_14 entityPackets;
 
@@ -34,7 +34,7 @@ public class Protocol1_13_2To1_14 extends BackwardsProtocol<ClientboundPackets1_
 
     @Override
     protected void registerPackets() {
-        executeAsyncAfterLoaded(Protocol1_14To1_13_2.class, BackwardsMappings::init);
+        executeAsyncAfterLoaded(Protocol1_14To1_13_2.class, MAPPINGS::load);
 
         TranslatableRewriter translatableRewriter = new TranslatableRewriter(this);
         translatableRewriter.registerBossBar(ClientboundPackets1_14.BOSSBAR);
@@ -52,51 +52,12 @@ public class Protocol1_13_2To1_14 extends BackwardsProtocol<ClientboundPackets1_
         new PlayerPackets1_14(this).register();
         new SoundPackets1_14(this).register();
 
+        new StatisticsRewriter(this, entityPackets::getOldEntityId).register(ClientboundPackets1_14.STATISTICS);
+
         cancelOutgoing(ClientboundPackets1_14.UPDATE_VIEW_POSITION);
         cancelOutgoing(ClientboundPackets1_14.UPDATE_VIEW_DISTANCE);
         cancelOutgoing(ClientboundPackets1_14.ACKNOWLEDGE_PLAYER_DIGGING);
 
-        registerOutgoing(ClientboundPackets1_14.ADVANCEMENTS, new PacketRemapper() { // c
-            @Override
-            public void registerMap() {
-                handler(new PacketHandler() {
-                    @Override
-                    public void handle(PacketWrapper wrapper) throws Exception {
-                        wrapper.passthrough(Type.BOOLEAN); // Reset/clear
-                        int size = wrapper.passthrough(Type.VAR_INT); // Mapping size
-
-                        for (int i = 0; i < size; i++) {
-                            wrapper.passthrough(Type.STRING); // Identifier
-
-                            // Parent
-                            if (wrapper.passthrough(Type.BOOLEAN))
-                                wrapper.passthrough(Type.STRING);
-
-                            // Display data
-                            if (wrapper.passthrough(Type.BOOLEAN)) {
-                                wrapper.passthrough(Type.STRING); // Title
-                                wrapper.passthrough(Type.STRING); // Description
-                                blockItemPackets.handleItemToClient(wrapper.passthrough(Type.FLAT_VAR_INT_ITEM)); // Icon
-                                wrapper.passthrough(Type.VAR_INT); // Frame type
-                                int flags = wrapper.passthrough(Type.INT); // Flags
-                                if ((flags & 1) != 0)
-                                    wrapper.passthrough(Type.STRING); // Background texture
-                                wrapper.passthrough(Type.FLOAT); // X
-                                wrapper.passthrough(Type.FLOAT); // Y
-                            }
-
-                            wrapper.passthrough(Type.STRING_ARRAY); // Criteria
-
-                            int arrayLength = wrapper.passthrough(Type.VAR_INT);
-                            for (int array = 0; array < arrayLength; array++) {
-                                wrapper.passthrough(Type.STRING_ARRAY); // String array
-                            }
-                        }
-                    }
-                });
-            }
-        });
-
         registerOutgoing(ClientboundPackets1_14.TAGS, new PacketRemapper() {
             @Override
             public void registerMap() {
@@ -110,7 +71,7 @@ public class Protocol1_13_2To1_14 extends BackwardsProtocol<ClientboundPackets1_
                             for (int j = 0; j < blockIds.length; j++) {
                                 int id = blockIds[j];
                                 // Ignore new blocktags
-                                int blockId = BackwardsMappings.blockMappings.getNewId(id);
+                                int blockId = getMappingData().getNewBlockId(id);
                                 blockIds[j] = blockId;
                             }
                         }
@@ -122,7 +83,7 @@ public class Protocol1_13_2To1_14 extends BackwardsProtocol<ClientboundPackets1_
                             for (int j = 0; j < itemIds.length; j++) {
                                 int itemId = itemIds[j];
                                 // Ignore new itemtags
-                                int oldId = MappingData.oldToNewItems.inverse().get(itemId);
+                                int oldId = getMappingData().getItemMappings().get(itemId);
                                 itemIds[j] = oldId;
                             }
                         }
@@ -200,27 +161,6 @@ public class Protocol1_13_2To1_14 extends BackwardsProtocol<ClientboundPackets1_
         });
     }
 
-    public static int getNewBlockStateId(int id) {
-        int newId = BackwardsMappings.blockStateMappings.getNewId(id);
-        if (newId == -1) {
-            ViaBackwards.getPlatform().getLogger().warning("Missing 1.13.2 blockstate id for 1.14 block " + id);
-            return 0;
-        }
-        return newId;
-    }
-
-
-    public static int getNewBlockId(int id) {
-        if (id == 669) return -1; // Bell
-
-        int newId = BackwardsMappings.blockMappings.getNewId(id);
-        if (newId == -1) {
-            ViaBackwards.getPlatform().getLogger().warning("Missing 1.13.2 block id for 1.14 block " + id);
-            return -1;
-        }
-        return newId;
-    }
-
     @Override
     public void init(UserConnection user) {
         // Register ClientWorld
@@ -248,4 +188,9 @@ public class Protocol1_13_2To1_14 extends BackwardsProtocol<ClientboundPackets1_
     public EntityPackets1_14 getEntityPackets() {
         return entityPackets;
     }
+
+    @Override
+    public BackwardsMappings getMappingData() {
+        return MAPPINGS;
+    }
 }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_13_2to1_14/data/BackwardsMappings.java

@@ -1,29 +0,0 @@
-package nl.matsv.viabackwards.protocol.protocol1_13_2to1_14.data;
-
-import nl.matsv.viabackwards.ViaBackwards;
-import nl.matsv.viabackwards.api.data.VBItemMappings;
-import nl.matsv.viabackwards.api.data.VBMappingDataLoader;
-import nl.matsv.viabackwards.api.data.VBMappings;
-import nl.matsv.viabackwards.api.data.VBSoundMappings;
-import us.myles.ViaVersion.api.data.MappingDataLoader;
-import us.myles.ViaVersion.api.data.Mappings;
-import us.myles.viaversion.libs.gson.JsonObject;
-
-public class BackwardsMappings {
-    public static Mappings blockStateMappings;
-    public static Mappings blockMappings;
-    public static VBSoundMappings soundMappings;
-    public static VBItemMappings itemMappings;
-
-    public static void init() {
-        ViaBackwards.getPlatform().getLogger().info("Loading 1.14 -> 1.13.2 mappings...");
-        JsonObject mapping1_13_2 = MappingDataLoader.getMappingsCache().get("mapping-1.13.2.json");
-        JsonObject mapping1_14 = MappingDataLoader.getMappingsCache().get("mapping-1.14.json");
-        JsonObject mapping1_13_2to1_14 = VBMappingDataLoader.loadFromDataDir("mapping-1.13.2to1.14.json");
-
-        blockStateMappings = new VBMappings(mapping1_14.getAsJsonObject("blockstates"), mapping1_13_2.getAsJsonObject("blockstates"), mapping1_13_2to1_14.getAsJsonObject("blockstates"));
-        blockMappings = new VBMappings(mapping1_14.getAsJsonObject("blocks"), mapping1_13_2.getAsJsonObject("blocks"), mapping1_13_2to1_14.getAsJsonObject("blocks"), false);
-        itemMappings = new VBItemMappings(mapping1_14.getAsJsonObject("items"), mapping1_13_2.getAsJsonObject("items"), mapping1_13_2to1_14.getAsJsonObject("items"));
-        soundMappings = new VBSoundMappings(mapping1_14.getAsJsonArray("sounds"), mapping1_13_2.getAsJsonArray("sounds"), mapping1_13_2to1_14.getAsJsonObject("sounds"));
-    }
-}

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_13_2to1_14/data/RecipeRewriter1_14.java

@@ -1,65 +0,0 @@
-package nl.matsv.viabackwards.protocol.protocol1_13_2to1_14.data;
-
-import nl.matsv.viabackwards.api.rewriters.ItemRewriterBase;
-import nl.matsv.viabackwards.api.rewriters.RecipeRewriter;
-import us.myles.ViaVersion.api.PacketWrapper;
-import us.myles.ViaVersion.api.minecraft.item.Item;
-import us.myles.ViaVersion.api.type.Type;
-
-public class RecipeRewriter1_14 extends RecipeRewriter {
-
-    public RecipeRewriter1_14(ItemRewriterBase rewriter) {
-        super(rewriter);
-    }
-
-    public void handle(PacketWrapper wrapper, String type) throws Exception {
-        switch (type) {
-            case "crafting_shapeless":
-                handleCraftingShapeless(wrapper);
-                break;
-            case "crafting_shaped":
-                handleCraftingShaped(wrapper);
-                break;
-            case "smelting":
-                handleSmelting(wrapper);
-                break;
-        }
-    }
-
-    public void handleSmelting(PacketWrapper wrapper) throws Exception {
-        wrapper.passthrough(Type.STRING); // Group
-        Item[] items = wrapper.passthrough(Type.FLAT_VAR_INT_ITEM_ARRAY_VAR_INT); // Ingredients
-        for (Item item : items) {
-            rewriter.handleItemToClient(item);
-        }
-
-        rewriter.handleItemToClient(wrapper.passthrough(Type.FLAT_VAR_INT_ITEM)); // Result
-
-        wrapper.passthrough(Type.FLOAT); // EXP
-        wrapper.passthrough(Type.VAR_INT); // Cooking time
-    }
-
-    public void handleCraftingShaped(PacketWrapper wrapper) throws Exception {
-        int ingredientsNo = wrapper.passthrough(Type.VAR_INT) * wrapper.passthrough(Type.VAR_INT);
-        wrapper.passthrough(Type.STRING); // Group
-        for (int j = 0; j < ingredientsNo; j++) {
-            Item[] items = wrapper.passthrough(Type.FLAT_VAR_INT_ITEM_ARRAY_VAR_INT); // Ingredients
-            for (Item item : items) {
-                rewriter.handleItemToClient(item);
-            }
-        }
-        rewriter.handleItemToClient(wrapper.passthrough(Type.FLAT_VAR_INT_ITEM)); // Result
-    }
-
-    public void handleCraftingShapeless(PacketWrapper wrapper) throws Exception {
-        wrapper.passthrough(Type.STRING); // Group
-        int ingredientsNo = wrapper.passthrough(Type.VAR_INT);
-        for (int j = 0; j < ingredientsNo; j++) {
-            Item[] items = wrapper.passthrough(Type.FLAT_VAR_INT_ITEM_ARRAY_VAR_INT); // Ingredients
-            for (Item item : items) {
-                rewriter.handleItemToClient(item);
-            }
-        }
-        rewriter.handleItemToClient(wrapper.passthrough(Type.FLAT_VAR_INT_ITEM)); // Result
-    }
-}

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_13_2to1_14/packets/BlockItemPackets1_14.java

@@ -4,11 +4,8 @@ import com.google.common.collect.ImmutableSet;
 import nl.matsv.viabackwards.ViaBackwards;
 import nl.matsv.viabackwards.api.entities.storage.EntityTracker;
 import nl.matsv.viabackwards.api.rewriters.EnchantmentRewriter;
-import nl.matsv.viabackwards.api.rewriters.RecipeRewriter;
 import nl.matsv.viabackwards.api.rewriters.TranslatableRewriter;
 import nl.matsv.viabackwards.protocol.protocol1_13_2to1_14.Protocol1_13_2To1_14;
-import nl.matsv.viabackwards.protocol.protocol1_13_2to1_14.data.BackwardsMappings;
-import nl.matsv.viabackwards.protocol.protocol1_13_2to1_14.data.RecipeRewriter1_14;
 import nl.matsv.viabackwards.protocol.protocol1_13_2to1_14.storage.ChunkLightStorage;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.Via;
@@ -24,17 +21,19 @@ import us.myles.ViaVersion.api.remapper.PacketHandler;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
 import us.myles.ViaVersion.api.rewriters.BlockRewriter;
 import us.myles.ViaVersion.api.rewriters.ItemRewriter;
+import us.myles.ViaVersion.api.rewriters.RecipeRewriter;
 import us.myles.ViaVersion.api.type.Type;
 import us.myles.ViaVersion.api.type.types.version.Types1_13;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.ChatRewriter;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.ClientboundPackets1_13;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.ServerboundPackets1_13;
+import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.data.RecipeRewriter1_13_2;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.types.Chunk1_13Type;
 import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.ClientboundPackets1_14;
-import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.data.MappingData;
+import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.Protocol1_14To1_13_2;
 import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.types.Chunk1_14Type;
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
-import us.myles.ViaVersion.util.GsonUtil;
+import us.myles.viaversion.libs.gson.JsonElement;
 import us.myles.viaversion.libs.gson.JsonObject;
 import us.myles.viaversion.libs.opennbt.conversion.ConverterRegistry;
 import us.myles.viaversion.libs.opennbt.tag.builtin.CompoundTag;
@@ -51,7 +50,7 @@ public class BlockItemPackets1_14 extends nl.matsv.viabackwards.api.rewriters.It
     private EnchantmentRewriter enchantmentRewriter;
 
     public BlockItemPackets1_14(Protocol1_13_2To1_14 protocol, TranslatableRewriter translatableRewriter) {
-        super(protocol, translatableRewriter, BlockItemPackets1_14::getOldItemId, BlockItemPackets1_14::getNewItemId, id -> BackwardsMappings.itemMappings.getMappedItem(id));
+        super(protocol, translatableRewriter);
     }
 
     @Override
@@ -137,19 +136,19 @@ public class BlockItemPackets1_14 extends nl.matsv.viabackwards.api.rewriters.It
 
                         wrapper.write(Type.STRING, stringType);
 
-                        String title = wrapper.read(Type.STRING);
+                        JsonElement title = wrapper.read(Type.COMPONENT);
                         if (containerTitle != null) {
                             // Don't rewrite renamed, only translatable titles
-                            JsonObject object = GsonUtil.getGson().fromJson(title, JsonObject.class);
-                            if (object.has("translate")) {
+                            JsonObject object;
+                            if (title.isJsonObject() && (object = title.getAsJsonObject()).has("translate")) {
                                 // Don't rewrite other 9x3 translatable containers
                                 if (type != 2 || object.getAsJsonPrimitive("translate").getAsString().equals("container.barrel")) {
                                     title = ChatRewriter.legacyTextToJson(containerTitle);
                                 }
                             }
                         }
-                        wrapper.write(Type.STRING, title);
 
+                        wrapper.write(Type.COMPONENT, title);
                         wrapper.write(Type.UNSIGNED_BYTE, (short) slotSize);
                     }
                 });
@@ -165,7 +164,9 @@ public class BlockItemPackets1_14 extends nl.matsv.viabackwards.api.rewriters.It
                     public void handle(PacketWrapper wrapper) throws Exception {
                         wrapper.passthrough(Type.UNSIGNED_BYTE); // Window id
                         wrapper.write(Type.STRING, "EntityHorse"); // Type
-                        wrapper.write(Type.STRING, "{\"translate\":\"minecraft.horse\"}"); // Title
+                        JsonObject object = new JsonObject();
+                        object.addProperty("translate", "minecraft.horse");
+                        wrapper.write(Type.COMPONENT, object); // Title
                         wrapper.write(Type.UNSIGNED_BYTE, wrapper.read(Type.VAR_INT).shortValue()); // Number of slots
                         wrapper.passthrough(Type.INT); // Entity id
                     }
@@ -174,11 +175,12 @@ public class BlockItemPackets1_14 extends nl.matsv.viabackwards.api.rewriters.It
         });
 
         ItemRewriter itemRewriter = new ItemRewriter(protocol, this::handleItemToClient, this::handleItemToServer);
-        BlockRewriter blockRewriter = new BlockRewriter(protocol, Type.POSITION, Protocol1_13_2To1_14::getNewBlockStateId, Protocol1_13_2To1_14::getNewBlockId);
+        BlockRewriter blockRewriter = new BlockRewriter(protocol, Type.POSITION);
 
-        itemRewriter.registerSetCooldown(ClientboundPackets1_14.COOLDOWN, BlockItemPackets1_14::getOldItemId);
+        itemRewriter.registerSetCooldown(ClientboundPackets1_14.COOLDOWN);
         itemRewriter.registerWindowItems(ClientboundPackets1_14.WINDOW_ITEMS, Type.FLAT_VAR_INT_ITEM_ARRAY);
         itemRewriter.registerSetSlot(ClientboundPackets1_14.SET_SLOT, Type.FLAT_VAR_INT_ITEM);
+        itemRewriter.registerAdvancements(ClientboundPackets1_14.ADVANCEMENTS, Type.FLAT_VAR_INT_ITEM);
 
         // Trade List -> Plugin Message
         protocol.registerOutgoing(ClientboundPackets1_14.TRADE_LIST, ClientboundPackets1_13.PLUGIN_MESSAGE, new PacketRemapper() {
@@ -280,12 +282,12 @@ public class BlockItemPackets1_14 extends nl.matsv.viabackwards.api.rewriters.It
             }
         });
 
-        protocol.registerOutgoing(ClientboundPackets1_14.DECLARE_RECIPES, new PacketRemapper() { // c
+        RecipeRewriter recipeHandler = new RecipeRewriter1_13_2(protocol, this::handleItemToClient);
+        protocol.registerOutgoing(ClientboundPackets1_14.DECLARE_RECIPES, new PacketRemapper() {
             @Override
             public void registerMap() {
                 handler(new PacketHandler() {
                     private final Set<String> removedTypes = ImmutableSet.of("crafting_special_suspiciousstew", "blasting", "smoking", "campfire_cooking", "stonecutting");
-                    private final RecipeRewriter recipeHandler = new RecipeRewriter1_14(BlockItemPackets1_14.this);
 
                     @Override
                     public void handle(PacketWrapper wrapper) throws Exception {
@@ -355,7 +357,7 @@ public class BlockItemPackets1_14 extends nl.matsv.viabackwards.api.rewriters.It
                 map(Type.UNSIGNED_BYTE); // Action param
                 map(Type.VAR_INT); // Block id - /!\ NOT BLOCK STATE
                 handler(wrapper -> {
-                    int mappedId = Protocol1_13_2To1_14.getNewBlockId(wrapper.get(Type.VAR_INT, 0));
+                    int mappedId = protocol.getMappingData().getNewBlockId(wrapper.get(Type.VAR_INT, 0));
                     if (mappedId == -1) {
                         wrapper.cancel();
                         return;
@@ -375,7 +377,7 @@ public class BlockItemPackets1_14 extends nl.matsv.viabackwards.api.rewriters.It
                     public void handle(PacketWrapper wrapper) throws Exception {
                         int id = wrapper.get(Type.VAR_INT, 0);
 
-                        wrapper.set(Type.VAR_INT, 0, Protocol1_13_2To1_14.getNewBlockStateId(id));
+                        wrapper.set(Type.VAR_INT, 0, protocol.getMappingData().getNewBlockStateId(id));
                     }
                 });
             }
@@ -413,7 +415,7 @@ public class BlockItemPackets1_14 extends nl.matsv.viabackwards.api.rewriters.It
                     @Override
                     public void handle(PacketWrapper wrapper) throws Exception {
                         ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
-                        Chunk chunk = wrapper.read(new Chunk1_14Type(clientWorld));
+                        Chunk chunk = wrapper.read(new Chunk1_14Type());
                         wrapper.write(new Chunk1_13Type(clientWorld), chunk);
 
                         ChunkLightStorage.ChunkLight chunkLight = wrapper.user().get(ChunkLightStorage.class).getStoredLight(chunk.getX(), chunk.getZ());
@@ -440,7 +442,7 @@ public class BlockItemPackets1_14 extends nl.matsv.viabackwards.api.rewriters.It
                                     for (int y = 0; y < 16; y++) {
                                         for (int z = 0; z < 16; z++) {
                                             int id = section.getFlatBlock(x, y, z);
-                                            if (MappingData.nonFullBlocks.contains(id)) {
+                                            if (Protocol1_14To1_13_2.MAPPINGS.getNonFullBlocks().contains(id)) {
                                                 section.getBlockLightNibbleArray().set(x, y, z, 0);
                                             }
                                         }
@@ -450,7 +452,7 @@ public class BlockItemPackets1_14 extends nl.matsv.viabackwards.api.rewriters.It
 
                             for (int j = 0; j < section.getPaletteSize(); j++) {
                                 int old = section.getPaletteEntry(j);
-                                int newId = Protocol1_13_2To1_14.getNewBlockStateId(old);
+                                int newId = protocol.getMappingData().getNewBlockStateId(old);
                                 section.setPaletteEntry(j, newId);
                             }
                         }
@@ -485,17 +487,16 @@ public class BlockItemPackets1_14 extends nl.matsv.viabackwards.api.rewriters.It
                         int id = wrapper.get(Type.INT, 0);
                         int data = wrapper.get(Type.INT, 1);
                         if (id == 1010) { // Play record
-                            wrapper.set(Type.INT, 1, data = BlockItemPackets1_14.getOldItemId(data));
+                            wrapper.set(Type.INT, 1, protocol.getMappingData().getNewItemId(data));
                         } else if (id == 2001) { // Block break + block break sound
-                            wrapper.set(Type.INT, 1, data = Protocol1_13_2To1_14.getNewBlockStateId(data));
+                            wrapper.set(Type.INT, 1, protocol.getMappingData().getNewBlockStateId(data));
                         }
                     }
                 });
             }
         });
 
-        blockRewriter.registerSpawnParticle(ClientboundPackets1_14.SPAWN_PARTICLE, 3, 23, 32,
-                EntityPackets1_14::getOldParticleId, this::handleItemToClient, Type.FLAT_VAR_INT_ITEM, Type.FLOAT);
+        itemRewriter.registerSpawnParticle(ClientboundPackets1_14.SPAWN_PARTICLE, Type.FLAT_VAR_INT_ITEM, Type.FLOAT);
 
         protocol.registerOutgoing(ClientboundPackets1_14.MAP_DATA, new PacketRemapper() {
             @Override
@@ -535,21 +536,19 @@ public class BlockItemPackets1_14 extends nl.matsv.viabackwards.api.rewriters.It
                 CompoundTag display = tag.get("display");
                 if (((CompoundTag) tag.get("display")).get("Lore") instanceof ListTag) {
                     ListTag lore = display.get("Lore");
-                    ListTag via = display.get(nbtTagName + "|Lore");
+                    ListTag via = display.remove(nbtTagName + "|Lore");
                     if (via != null) {
                         display.put(ConverterRegistry.convertToTag("Lore", ConverterRegistry.convertToValue(via)));
                     } else {
                         for (Tag loreEntry : lore) {
-                            if (loreEntry instanceof StringTag) {
-                                ((StringTag) loreEntry).setValue(
-                                        ChatRewriter.jsonTextToLegacy(
-                                                ((StringTag) loreEntry).getValue()
-                                        )
-                                );
+                            if (!(loreEntry instanceof StringTag)) continue;
+
+                            String value = ((StringTag) loreEntry).getValue();
+                            if (value != null && !value.isEmpty()) {
+                                ((StringTag) loreEntry).setValue(ChatRewriter.jsonTextToLegacy(value));
                             }
                         }
                     }
-                    display.remove(nbtTagName + "|Lore");
                 }
             }
 
@@ -573,7 +572,7 @@ public class BlockItemPackets1_14 extends nl.matsv.viabackwards.api.rewriters.It
                     display.put(ConverterRegistry.convertToTag(nbtTagName + "|Lore", ConverterRegistry.convertToValue(lore)));
                     for (Tag loreEntry : lore) {
                         if (loreEntry instanceof StringTag) {
-                            ((StringTag) loreEntry).setValue(ChatRewriter.legacyTextToJson(((StringTag) loreEntry).getValue()));
+                            ((StringTag) loreEntry).setValue(ChatRewriter.legacyTextToJson(((StringTag) loreEntry).getValue()).toString());
                         }
                     }
                 }
@@ -583,23 +582,4 @@ public class BlockItemPackets1_14 extends nl.matsv.viabackwards.api.rewriters.It
         }
         return item;
     }
-
-
-    public static int getNewItemId(int id) {
-        int newId = MappingData.oldToNewItems.get(id);
-        if (newId == -1) {
-            ViaBackwards.getPlatform().getLogger().warning("Missing 1.14 item for 1.13.2 item " + id);
-            return 1;
-        }
-        return newId;
-    }
-
-    public static int getOldItemId(int id) {
-        int oldId = MappingData.oldToNewItems.inverse().get(id);
-        if (oldId == -1) {
-            ViaBackwards.getPlatform().getLogger().warning("Missing 1.13.2 item for 1.14 item " + id);
-            return 1;
-        }
-        return oldId;
-    }
 }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_13_2to1_14/packets/EntityPackets1_14.java

@@ -34,7 +34,7 @@ public class EntityPackets1_14 extends LegacyEntityRewriter<Protocol1_13_2To1_14
     private EntityPositionHandler positionHandler;
 
     public EntityPackets1_14(Protocol1_13_2To1_14 protocol) {
-        super(protocol, MetaType1_13_2.OptChat);
+        super(protocol, MetaType1_13_2.OptChat, MetaType1_13_2.Boolean);
     }
 
     @Override
@@ -172,7 +172,7 @@ public class EntityPackets1_14 extends LegacyEntityRewriter<Protocol1_13_2To1_14
                         int data = wrapper.get(Type.INT, 0);
                         if (objectType == Entity1_13Types.ObjectType.FALLING_BLOCK) {
                             int blockState = wrapper.get(Type.INT, 0);
-                            int combined = Protocol1_13_2To1_14.getNewBlockStateId(blockState);
+                            int combined = protocol.getMappingData().getNewBlockStateId(blockState);
                             wrapper.set(Type.INT, 0, combined);
                         } else if (entityType.isOrHasParent(Entity1_13Types.EntityType.ABSTRACT_ARROW)) {
                             wrapper.set(Type.INT, 0, data + 1);
@@ -351,7 +351,7 @@ public class EntityPackets1_14 extends LegacyEntityRewriter<Protocol1_13_2To1_14
                 meta.setValue(getProtocol().getBlockItemPackets().handleItemToClient(item));
             } else if (type == MetaType1_13_2.BlockID) {
                 int blockstate = (Integer) meta.getValue();
-                meta.setValue(Protocol1_13_2To1_14.getNewBlockStateId(blockstate));
+                meta.setValue(protocol.getMappingData().getNewBlockStateId(blockstate));
             }
 
             return meta;
@@ -391,8 +391,7 @@ public class EntityPackets1_14 extends LegacyEntityRewriter<Protocol1_13_2To1_14
 
         registerMetaHandler().filter(Entity1_14Types.EntityType.AREA_EFFECT_CLOUD, 10).handle(e -> {
             Metadata meta = e.getData();
-            Particle particle = (Particle) meta.getValue();
-            particle.setId(getOldParticleId(particle.getId()));
+            rewriteParticle((Particle) meta.getValue());
             return meta;
         });
 
@@ -549,28 +548,6 @@ public class EntityPackets1_14 extends LegacyEntityRewriter<Protocol1_13_2To1_14
         }
     }
 
-    public static int getOldParticleId(int id) {
-        if (id == 56 || id == 57) return 5; // campfire cosy smoke, signal smoke -> cloud
-        if (id >= 45) {
-            id -= 1; // new 39 -> 44
-        }
-        if (id >= 30) {
-            id -= 1; // skip new short happy villager
-        }
-        if (id >= 28) {
-            id -= 1; // new 24 -> 27
-        }
-        if (id >= 13) {
-            id -= 1; // new water drip 11 -> 13
-        }
-        if (id == 10 || id == 11) {
-            id = 9; // set both landing/falling lava to dripping lava
-        } else if (id > 11) {
-            id -= 2;
-        }
-        return id;
-    }
-
     @Override
     protected EntityType getTypeFromId(int typeId) {
         return Entity1_14Types.getTypeFromId(typeId);

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_13_2to1_14/packets/SoundPackets1_14.java

@@ -5,7 +5,6 @@ import nl.matsv.viabackwards.api.entities.storage.EntityTracker;
 import nl.matsv.viabackwards.api.rewriters.Rewriter;
 import nl.matsv.viabackwards.api.rewriters.SoundRewriter;
 import nl.matsv.viabackwards.protocol.protocol1_13_2to1_14.Protocol1_13_2To1_14;
-import nl.matsv.viabackwards.protocol.protocol1_13_2to1_14.data.BackwardsMappings;
 import nl.matsv.viabackwards.protocol.protocol1_13_2to1_14.storage.EntityPositionStorage1_14;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
@@ -20,8 +19,7 @@ public class SoundPackets1_14 extends Rewriter<Protocol1_13_2To1_14> {
 
     @Override
     protected void registerPackets() {
-        SoundRewriter soundRewriter = new SoundRewriter(protocol,
-                id -> BackwardsMappings.soundMappings.getNewId(id), stringId -> BackwardsMappings.soundMappings.getNewId(stringId));
+        SoundRewriter soundRewriter = new SoundRewriter(protocol);
         soundRewriter.registerSound(ClientboundPackets1_14.SOUND);
         soundRewriter.registerNamedSound(ClientboundPackets1_14.NAMED_SOUND);
         soundRewriter.registerStopSound(ClientboundPackets1_14.STOP_SOUND);
@@ -34,7 +32,7 @@ public class SoundPackets1_14 extends Rewriter<Protocol1_13_2To1_14> {
                     wrapper.cancel();
 
                     int soundId = wrapper.read(Type.VAR_INT);
-                    int newId = BackwardsMappings.soundMappings.getNewId(soundId);
+                    int newId = protocol.getMappingData().getSoundMappings().getNewId(soundId);
                     if (newId == -1) return;
 
                     int category = wrapper.read(Type.VAR_INT);

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_13to1_13_1/Protocol1_13To1_13_1.java

@@ -1,6 +1,7 @@
 package nl.matsv.viabackwards.protocol.protocol1_13to1_13_1;
 
 import nl.matsv.viabackwards.api.BackwardsProtocol;
+import nl.matsv.viabackwards.api.data.BackwardsMappings;
 import nl.matsv.viabackwards.api.entities.storage.EntityTracker;
 import nl.matsv.viabackwards.api.rewriters.TranslatableRewriter;
 import nl.matsv.viabackwards.protocol.protocol1_13to1_13_1.packets.EntityPackets1_13_1;
@@ -12,19 +13,26 @@ import us.myles.ViaVersion.api.minecraft.item.Item;
 import us.myles.ViaVersion.api.remapper.PacketHandler;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
 import us.myles.ViaVersion.api.remapper.ValueTransformer;
+import us.myles.ViaVersion.api.rewriters.StatisticsRewriter;
+import us.myles.ViaVersion.api.rewriters.TagRewriter;
 import us.myles.ViaVersion.api.type.Type;
+import us.myles.ViaVersion.protocols.protocol1_13_1to1_13.Protocol1_13_1To1_13;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.ClientboundPackets1_13;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.ServerboundPackets1_13;
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
 
 public class Protocol1_13To1_13_1 extends BackwardsProtocol<ClientboundPackets1_13, ClientboundPackets1_13, ServerboundPackets1_13, ServerboundPackets1_13> {
 
+    public static final BackwardsMappings MAPPINGS = new BackwardsMappings("1.13.2", "1.13", Protocol1_13_1To1_13.class, true);
+
     public Protocol1_13To1_13_1() {
         super(ClientboundPackets1_13.class, ClientboundPackets1_13.class, ServerboundPackets1_13.class, ServerboundPackets1_13.class);
     }
 
     @Override
     protected void registerPackets() {
+        executeAsyncAfterLoaded(Protocol1_13_1To1_13.class, MAPPINGS::load);
+
         new EntityPackets1_13_1(this).register();
         InventoryPackets1_13_1.register(this);
         WorldPackets1_13_1.register(this);
@@ -103,7 +111,7 @@ public class Protocol1_13To1_13_1 extends BackwardsProtocol<ClientboundPackets1_
                     public void handle(PacketWrapper wrapper) throws Exception {
                         int action = wrapper.get(Type.VAR_INT, 0);
                         if (action == 0 || action == 3) {
-                            wrapper.write(Type.STRING, translatableRewriter.processText(wrapper.read(Type.STRING)));
+                            translatableRewriter.processText(wrapper.passthrough(Type.COMPONENT));
                             if (action == 0) {
                                 wrapper.passthrough(Type.FLOAT);
                                 wrapper.passthrough(Type.VAR_INT);
@@ -136,8 +144,8 @@ public class Protocol1_13To1_13_1 extends BackwardsProtocol<ClientboundPackets1_
 
                             // Display data
                             if (wrapper.passthrough(Type.BOOLEAN)) {
-                                wrapper.passthrough(Type.STRING); // Title
-                                wrapper.passthrough(Type.STRING); // Description
+                                wrapper.passthrough(Type.COMPONENT); // Title
+                                wrapper.passthrough(Type.COMPONENT); // Description
                                 Item icon = wrapper.passthrough(Type.FLAT_ITEM);
                                 InventoryPackets1_13_1.toClient(icon);
                                 wrapper.passthrough(Type.VAR_INT); // Frame type
@@ -160,66 +168,8 @@ public class Protocol1_13To1_13_1 extends BackwardsProtocol<ClientboundPackets1_
             }
         });
 
-        registerOutgoing(ClientboundPackets1_13.TAGS, new PacketRemapper() {
-            @Override
-            public void registerMap() {
-                handler(new PacketHandler() {
-                    @Override
-                    public void handle(PacketWrapper wrapper) throws Exception {
-                        int blockTagsSize = wrapper.passthrough(Type.VAR_INT); // block tags
-                        for (int i = 0; i < blockTagsSize; i++) {
-                            wrapper.passthrough(Type.STRING);
-                            int[] blocks = wrapper.passthrough(Type.VAR_INT_ARRAY_PRIMITIVE);
-                            for (int j = 0; j < blocks.length; j++) {
-                                blocks[j] = getNewBlockId(blocks[j]);
-                            }
-                        }
-                        int itemTagsSize = wrapper.passthrough(Type.VAR_INT); // item tags
-                        for (int i = 0; i < itemTagsSize; i++) {
-                            wrapper.passthrough(Type.STRING);
-                            int[] items = wrapper.passthrough(Type.VAR_INT_ARRAY_PRIMITIVE);
-                            for (int j = 0; j < items.length; j++) {
-                                items[j] = InventoryPackets1_13_1.getOldItemId(items[j]);
-                            }
-                        }
-                    }
-                });
-            }
-        });
-    }
-
-    public static int getNewBlockStateId(int blockId) {
-        if (blockId > 8590) {
-            blockId -= 17;
-        } else if (blockId > 8588) {
-            blockId = 8573;
-        } else if (blockId > 8479) {
-            blockId -= 16;
-        } else if (blockId > 8469 && blockId % 2 == 0) {
-            if (blockId % 2 == 0) {
-                blockId = 8459 + (blockId - 8470) / 2;
-            } else {
-                blockId = 0;  //TODO replace new blocks
-            }
-        } else if (blockId > 8463) {
-            blockId = 0;   //TODO replace new blocks
-        } else if (blockId > 1127) {
-            blockId -= 1;
-        } else if (blockId == 1127) {
-            blockId = 1126;
-        }
-
-        return blockId;
-    }
-
-    public static int getNewBlockId(int blockId) {
-        if (blockId > 565) {
-            blockId -= 5;
-        } else if (blockId > 561) {
-            blockId = 0;  // Replacements not needed
-        }
-
-        return blockId;
+        new TagRewriter(this, null).register(ClientboundPackets1_13.TAGS);
+        new StatisticsRewriter(this, null).register(ClientboundPackets1_13.STATISTICS);
     }
 
     @Override
@@ -231,7 +181,13 @@ public class Protocol1_13To1_13_1 extends BackwardsProtocol<ClientboundPackets1_
         // Init protocol in EntityTracker
         user.get(EntityTracker.class).initProtocol(this);
 
-        if (!user.has(ClientWorld.class))
+        if (!user.has(ClientWorld.class)) {
             user.put(new ClientWorld(user));
+        }
+    }
+
+    @Override
+    public BackwardsMappings getMappingData() {
+        return MAPPINGS;
     }
 }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_13to1_13_1/packets/EntityPackets1_13_1.java

@@ -13,6 +13,7 @@ import us.myles.ViaVersion.api.minecraft.metadata.types.MetaType1_13;
 import us.myles.ViaVersion.api.remapper.PacketHandler;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
 import us.myles.ViaVersion.api.type.Type;
+import us.myles.ViaVersion.api.type.types.Particle;
 import us.myles.ViaVersion.api.type.types.version.Types1_13;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.ClientboundPackets1_13;
 
@@ -51,7 +52,7 @@ public class EntityPackets1_13_1 extends LegacyEntityRewriter<Protocol1_13To1_13
                         // Rewrite falling block
                         if (entType.is(Entity1_13Types.EntityType.FALLING_BLOCK)) {
                             int data = wrapper.get(Type.INT, 0);
-                            wrapper.set(Type.INT, 0, Protocol1_13To1_13_1.getNewBlockStateId(data));
+                            wrapper.set(Type.INT, 0, protocol.getMappingData().getNewBlockStateId(data));
                         }
 
                         // Track Entity
@@ -128,15 +129,15 @@ public class EntityPackets1_13_1 extends LegacyEntityRewriter<Protocol1_13To1_13
         // Rewrite items & blocks
         registerMetaHandler().handle(e -> {
             Metadata meta = e.getData();
-
             if (meta.getMetaType() == MetaType1_13.Slot) {
                 InventoryPackets1_13_1.toClient((Item) meta.getValue());
             } else if (meta.getMetaType() == MetaType1_13.BlockID) {
                 // Convert to new block id
                 int data = (int) meta.getValue();
-                meta.setValue(Protocol1_13To1_13_1.getNewBlockStateId(data));
+                meta.setValue(protocol.getMappingData().getNewBlockStateId(data));
+            } else if (meta.getMetaType() == MetaType1_13.PARTICLE) {
+                rewriteParticle((Particle) meta.getValue());
             }
-
             return meta;
         });
 
@@ -160,7 +161,7 @@ public class EntityPackets1_13_1 extends LegacyEntityRewriter<Protocol1_13To1_13
                     Metadata meta = e.getData();
 
                     int data = (int) meta.getValue();
-                    meta.setValue(Protocol1_13To1_13_1.getNewBlockStateId(data));
+                    meta.setValue(protocol.getMappingData().getNewBlockStateId(data));
 
                     return meta;
                 });

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_13to1_13_1/packets/InventoryPackets1_13_1.java

@@ -1,5 +1,6 @@
 package nl.matsv.viabackwards.protocol.protocol1_13to1_13_1.packets;
 
+import nl.matsv.viabackwards.protocol.protocol1_13to1_13_1.Protocol1_13To1_13_1;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.minecraft.item.Item;
 import us.myles.ViaVersion.api.protocol.Protocol;
@@ -15,7 +16,7 @@ public class InventoryPackets1_13_1 {
     public static void register(Protocol protocol) {
         ItemRewriter itemRewriter = new ItemRewriter(protocol, InventoryPackets1_13_1::toClient, InventoryPackets1_13_1::toServer);
 
-        itemRewriter.registerSetCooldown(ClientboundPackets1_13.COOLDOWN, InventoryPackets1_13_1::getOldItemId);
+        itemRewriter.registerSetCooldown(ClientboundPackets1_13.COOLDOWN);
         itemRewriter.registerWindowItems(ClientboundPackets1_13.WINDOW_ITEMS, Type.FLAT_ITEM_ARRAY);
         itemRewriter.registerSetSlot(ClientboundPackets1_13.SET_SLOT, Type.FLAT_ITEM);
 
@@ -58,31 +59,17 @@ public class InventoryPackets1_13_1 {
         itemRewriter.registerEntityEquipment(ClientboundPackets1_13.ENTITY_EQUIPMENT, Type.FLAT_ITEM);
         itemRewriter.registerClickWindow(ServerboundPackets1_13.CLICK_WINDOW, Type.FLAT_ITEM);
         itemRewriter.registerCreativeInvAction(ServerboundPackets1_13.CREATIVE_INVENTORY_ACTION, Type.FLAT_ITEM);
+
+        itemRewriter.registerSpawnParticle(ClientboundPackets1_13.SPAWN_PARTICLE, Type.FLAT_ITEM, Type.FLOAT);
     }
 
     public static void toClient(Item item) {
         if (item == null) return;
-        item.setIdentifier(getOldItemId(item.getIdentifier()));
-    }
-
-    // 1.13.1 Item Id
-    public static int getNewItemId(int itemId) {
-        if (itemId >= 443) {
-            return itemId + 5;
-        }
-        return itemId;
+        item.setIdentifier(Protocol1_13To1_13_1.MAPPINGS.getNewItemId(item.getIdentifier()));
     }
 
     public static void toServer(Item item) {
         if (item == null) return;
-        item.setIdentifier(getNewItemId(item.getIdentifier()));
-    }
-
-    // 1.13 Item Id
-    public static int getOldItemId(int newId) {
-        if (newId >= 448) {
-            return newId - 5;
-        }
-        return newId;
+        item.setIdentifier(Protocol1_13To1_13_1.MAPPINGS.getOldItemId(item.getIdentifier()));
     }
 }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_13to1_13_1/packets/WorldPackets1_13_1.java

@@ -1,6 +1,5 @@
 package nl.matsv.viabackwards.protocol.protocol1_13to1_13_1.packets;
 
-import nl.matsv.viabackwards.protocol.protocol1_13to1_13_1.Protocol1_13To1_13_1;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.minecraft.chunks.Chunk;
 import us.myles.ViaVersion.api.minecraft.chunks.ChunkSection;
@@ -16,7 +15,7 @@ import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
 public class WorldPackets1_13_1 {
 
     public static void register(Protocol protocol) {
-        BlockRewriter blockRewriter = new BlockRewriter(protocol, Type.POSITION, Protocol1_13To1_13_1::getNewBlockStateId, Protocol1_13To1_13_1::getNewBlockId);
+        BlockRewriter blockRewriter = new BlockRewriter(protocol, Type.POSITION);
 
         protocol.registerOutgoing(ClientboundPackets1_13.CHUNK_DATA, new PacketRemapper() {
             @Override
@@ -30,7 +29,7 @@ public class WorldPackets1_13_1 {
                         for (ChunkSection section : chunk.getSections()) {
                             if (section != null) {
                                 for (int i = 0; i < section.getPaletteSize(); i++) {
-                                    section.setPaletteEntry(i, Protocol1_13To1_13_1.getNewBlockStateId(section.getPaletteEntry(i)));
+                                    section.setPaletteEntry(i, protocol.getMappingData().getNewBlockStateId(section.getPaletteEntry(i)));
                                 }
                             }
                         }
@@ -42,7 +41,6 @@ public class WorldPackets1_13_1 {
         blockRewriter.registerBlockAction(ClientboundPackets1_13.BLOCK_ACTION);
         blockRewriter.registerBlockChange(ClientboundPackets1_13.BLOCK_CHANGE);
         blockRewriter.registerMultiBlockChange(ClientboundPackets1_13.MULTI_BLOCK_CHANGE);
-        blockRewriter.registerEffect(ClientboundPackets1_13.EFFECT, 1010, 2001, InventoryPackets1_13_1::getOldItemId);
-        blockRewriter.registerSpawnParticle(ClientboundPackets1_13.SPAWN_PARTICLE, 3, 20, 27, InventoryPackets1_13_1::toClient, Type.FLAT_ITEM, Type.FLOAT);
+        blockRewriter.registerEffect(ClientboundPackets1_13.EFFECT, 1010, 2001);
     }
 }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_14_1to1_14_2/Protocol1_14_1To1_14_2.java

@@ -5,8 +5,4 @@ import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.ClientboundPackets1_14
 import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.ServerboundPackets1_14;
 
 public class Protocol1_14_1To1_14_2 extends BackwardsProtocol<ClientboundPackets1_14, ClientboundPackets1_14, ServerboundPackets1_14, ServerboundPackets1_14> {
-
-    public Protocol1_14_1To1_14_2() {
-        super(ClientboundPackets1_14.class, ClientboundPackets1_14.class, ServerboundPackets1_14.class, ServerboundPackets1_14.class);
-    }
 }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_14_2to1_14_3/Protocol1_14_2To1_14_3.java

@@ -4,9 +4,11 @@ import nl.matsv.viabackwards.api.BackwardsProtocol;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.remapper.PacketHandler;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
+import us.myles.ViaVersion.api.rewriters.RecipeRewriter;
 import us.myles.ViaVersion.api.type.Type;
 import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.ClientboundPackets1_14;
 import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.ServerboundPackets1_14;
+import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.data.RecipeRewriter1_14;
 
 public class Protocol1_14_2To1_14_3 extends BackwardsProtocol<ClientboundPackets1_14, ClientboundPackets1_14, ServerboundPackets1_14, ServerboundPackets1_14> {
 
@@ -47,77 +49,30 @@ public class Protocol1_14_2To1_14_3 extends BackwardsProtocol<ClientboundPackets
             }
         });
 
+        RecipeRewriter recipeHandler = new RecipeRewriter1_14(this, item -> {});
         registerOutgoing(ClientboundPackets1_14.DECLARE_RECIPES, new PacketRemapper() {
             @Override
             public void registerMap() {
-                handler(new PacketHandler() {
-                    @Override
-                    public void handle(PacketWrapper wrapper) throws Exception {
-                        int size = wrapper.passthrough(Type.VAR_INT);
-                        int deleted = 0;
-                        for (int i = 0; i < size; i++) {
-                            String fullType = wrapper.read(Type.STRING);
-                            String type = fullType.replace("minecraft:", "");
-                            String id = wrapper.read(Type.STRING); // id
+                handler(wrapper -> {
+                    int size = wrapper.passthrough(Type.VAR_INT);
+                    int deleted = 0;
+                    for (int i = 0; i < size; i++) {
+                        String fullType = wrapper.read(Type.STRING);
+                        String type = fullType.replace("minecraft:", "");
+                        String id = wrapper.read(Type.STRING); // id
 
-                            if (type.equals("crafting_special_repairitem")) {
-                                deleted++;
-                                continue;
-                            }
-
-                            wrapper.write(Type.STRING, fullType);
-                            wrapper.write(Type.STRING, id);
-
-                            switch (type) {
-                                case "crafting_shapeless": {
-                                    wrapper.passthrough(Type.STRING); // Group
-
-                                    int ingredientsNo = wrapper.passthrough(Type.VAR_INT);
-                                    for (int j = 0; j < ingredientsNo; j++) {
-                                        wrapper.passthrough(Type.FLAT_VAR_INT_ITEM_ARRAY_VAR_INT); // Ingredients
-                                    }
-                                    wrapper.passthrough(Type.FLAT_VAR_INT_ITEM);// Result
-
-                                    break;
-                                }
-                                case "crafting_shaped": {
-                                    int ingredientsNo = wrapper.passthrough(Type.VAR_INT) * wrapper.passthrough(Type.VAR_INT);
-                                    wrapper.passthrough(Type.STRING); // Group
-
-                                    for (int j = 0; j < ingredientsNo; j++) {
-                                        wrapper.passthrough(Type.FLAT_VAR_INT_ITEM_ARRAY_VAR_INT); // Ingredients
-                                    }
-                                    wrapper.passthrough(Type.FLAT_VAR_INT_ITEM);// Result
-
-                                    break;
-                                }
-                                case "stonecutting":
-                                    wrapper.passthrough(Type.STRING); // Group?
-
-                                    wrapper.passthrough(Type.FLAT_VAR_INT_ITEM_ARRAY_VAR_INT); // Ingredients
-
-                                    wrapper.passthrough(Type.FLAT_VAR_INT_ITEM); // Result
-
-                                    break;
-                                case "smelting":
-                                case "blasting":
-                                case "campfire_cooking":
-                                case "smoking":
-                                    wrapper.passthrough(Type.STRING); // Group
-
-                                    wrapper.passthrough(Type.FLAT_VAR_INT_ITEM_ARRAY_VAR_INT); // Ingredients
-
-                                    wrapper.passthrough(Type.FLAT_VAR_INT_ITEM);
-                                    wrapper.passthrough(Type.FLOAT); // EXP
-
-                                    wrapper.passthrough(Type.VAR_INT); // Cooking time
-
-                                    break;
-                            }
+                        if (type.equals("crafting_special_repairitem")) {
+                            deleted++;
+                            continue;
                         }
 
-                        wrapper.set(Type.VAR_INT, 0, size - deleted);
+                        wrapper.write(Type.STRING, fullType);
+                        wrapper.write(Type.STRING, id);
+
+                        recipeHandler.handle(wrapper, type);
                     }
+
+                    wrapper.set(Type.VAR_INT, 0, size - deleted);
                 });
             }
         });

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_14_4to1_15/Protocol1_14_4To1_15.java

@@ -1,30 +1,28 @@
 package nl.matsv.viabackwards.protocol.protocol1_14_4to1_15;
 
-import nl.matsv.viabackwards.ViaBackwards;
 import nl.matsv.viabackwards.api.BackwardsProtocol;
+import nl.matsv.viabackwards.api.data.BackwardsMappings;
 import nl.matsv.viabackwards.api.entities.storage.EntityTracker;
 import nl.matsv.viabackwards.api.rewriters.SoundRewriter;
 import nl.matsv.viabackwards.api.rewriters.TranslatableRewriter;
-import nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.data.BackwardsMappings;
 import nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.data.EntityTypeMapping;
 import nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.data.ImmediateRespawn;
 import nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.packets.BlockItemPackets1_15;
 import nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.packets.EntityPackets1_15;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.data.UserConnection;
-import us.myles.ViaVersion.api.remapper.PacketHandler;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
+import us.myles.ViaVersion.api.rewriters.StatisticsRewriter;
+import us.myles.ViaVersion.api.rewriters.TagRewriter;
 import us.myles.ViaVersion.api.type.Type;
-import us.myles.ViaVersion.packets.State;
 import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.ClientboundPackets1_14;
 import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.ServerboundPackets1_14;
 import us.myles.ViaVersion.protocols.protocol1_15to1_14_4.ClientboundPackets1_15;
 import us.myles.ViaVersion.protocols.protocol1_15to1_14_4.Protocol1_15To1_14_4;
-import us.myles.ViaVersion.protocols.protocol1_15to1_14_4.data.MappingData;
-import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
 
 public class Protocol1_14_4To1_15 extends BackwardsProtocol<ClientboundPackets1_15, ClientboundPackets1_14, ServerboundPackets1_14, ServerboundPackets1_14> {
 
+    public static final BackwardsMappings MAPPINGS = new BackwardsMappings("1.15", "1.14", Protocol1_15To1_14_4.class, true);
     private BlockItemPackets1_15 blockItemPackets;
 
     public Protocol1_14_4To1_15() {
@@ -33,7 +31,7 @@ public class Protocol1_14_4To1_15 extends BackwardsProtocol<ClientboundPackets1_
 
     @Override
     protected void registerPackets() {
-        executeAsyncAfterLoaded(Protocol1_15To1_14_4.class, BackwardsMappings::init);
+        executeAsyncAfterLoaded(Protocol1_15To1_14_4.class, MAPPINGS::load);
 
         TranslatableRewriter translatableRewriter = new TranslatableRewriter(this);
         translatableRewriter.registerBossBar(ClientboundPackets1_15.BOSSBAR);
@@ -48,8 +46,7 @@ public class Protocol1_14_4To1_15 extends BackwardsProtocol<ClientboundPackets1_
         (blockItemPackets = new BlockItemPackets1_15(this, translatableRewriter)).register();
         new EntityPackets1_15(this).register();
 
-        SoundRewriter soundRewriter = new SoundRewriter(this,
-                id -> BackwardsMappings.soundMappings.getNewId(id), stringId -> BackwardsMappings.soundMappings.getNewId(stringId));
+        SoundRewriter soundRewriter = new SoundRewriter(this);
         soundRewriter.registerSound(ClientboundPackets1_15.SOUND);
         soundRewriter.registerSound(ClientboundPackets1_15.ENTITY_SOUND);
         soundRewriter.registerNamedSound(ClientboundPackets1_15.NAMED_SOUND);
@@ -80,122 +77,28 @@ public class Protocol1_14_4To1_15 extends BackwardsProtocol<ClientboundPackets1_
             }
         });
 
-        registerOutgoing(ClientboundPackets1_15.ADVANCEMENTS, new PacketRemapper() {
-            @Override
-            public void registerMap() {
-                handler(new PacketHandler() {
-                    @Override
-                    public void handle(PacketWrapper wrapper) throws Exception {
-                        wrapper.passthrough(Type.BOOLEAN); // Reset/clear
-                        int size = wrapper.passthrough(Type.VAR_INT);
-                        for (int i = 0; i < size; i++) {
-                            wrapper.passthrough(Type.STRING); // Identifier
-                            // Parent
-                            if (wrapper.passthrough(Type.BOOLEAN)) {
-                                wrapper.passthrough(Type.STRING);
-                            }
-                            // Display data
-                            if (wrapper.passthrough(Type.BOOLEAN)) {
-                                wrapper.passthrough(Type.STRING); // Title
-                                wrapper.passthrough(Type.STRING); // Description
-                                blockItemPackets.handleItemToClient(wrapper.passthrough(Type.FLAT_VAR_INT_ITEM)); // Icon
-                                wrapper.passthrough(Type.VAR_INT); // Frame type
-                                int flags = wrapper.passthrough(Type.INT); // Flags
-                                if ((flags & 1) != 0) {
-                                    wrapper.passthrough(Type.STRING); // Background texture
-                                }
-                                wrapper.passthrough(Type.FLOAT); // X
-                                wrapper.passthrough(Type.FLOAT); // Y
-                            }
+        new TagRewriter(this, EntityTypeMapping::getOldEntityId).register(ClientboundPackets1_15.TAGS);
 
-                            wrapper.passthrough(Type.STRING_ARRAY); // Criteria
-                            int arrayLength = wrapper.passthrough(Type.VAR_INT);
-                            for (int array = 0; array < arrayLength; array++) {
-                                wrapper.passthrough(Type.STRING_ARRAY); // String array
-                            }
-                        }
-                    }
-                });
-            }
-        });
-
-        registerOutgoing(ClientboundPackets1_15.TAGS, new PacketRemapper() {
-            @Override
-            public void registerMap() {
-                handler(new PacketHandler() {
-                    @Override
-                    public void handle(PacketWrapper wrapper) throws Exception {
-                        int blockTagsSize = wrapper.passthrough(Type.VAR_INT);
-                        for (int i = 0; i < blockTagsSize; i++) {
-                            wrapper.passthrough(Type.STRING);
-                            int[] blockIds = wrapper.passthrough(Type.VAR_INT_ARRAY_PRIMITIVE);
-                            for (int j = 0; j < blockIds.length; j++) {
-                                int id = blockIds[j];
-                                blockIds[j] = BackwardsMappings.blockMappings.getNewId(id);
-                            }
-                        }
-
-                        int itemTagsSize = wrapper.passthrough(Type.VAR_INT);
-                        for (int i = 0; i < itemTagsSize; i++) {
-                            wrapper.passthrough(Type.STRING);
-                            int[] itemIds = wrapper.passthrough(Type.VAR_INT_ARRAY_PRIMITIVE);
-                            for (int j = 0; j < itemIds.length; j++) {
-                                int oldId = MappingData.oldToNewItems.inverse().get(itemIds[j]);
-                                itemIds[j] = oldId;
-                            }
-                        }
-
-                        int fluidTagsSize = wrapper.passthrough(Type.VAR_INT); // fluid tags
-                        for (int i = 0; i < fluidTagsSize; i++) {
-                            wrapper.passthrough(Type.STRING);
-                            wrapper.passthrough(Type.VAR_INT_ARRAY_PRIMITIVE);
-                        }
-
-                        int entityTagsSize = wrapper.passthrough(Type.VAR_INT);
-                        for (int i = 0; i < entityTagsSize; i++) {
-                            wrapper.passthrough(Type.STRING);
-                            int[] entityIds = wrapper.passthrough(Type.VAR_INT_ARRAY_PRIMITIVE);
-                            for (int j = 0; j < entityIds.length; j++) {
-                                entityIds[j] = EntityTypeMapping.getOldEntityId(entityIds[j]);
-                            }
-                        }
-                    }
-                });
-            }
-        });
-    }
-
-    public static int getNewBlockStateId(int id) {
-        int newId = BackwardsMappings.blockStateMappings.getNewId(id);
-        if (newId == -1) {
-            ViaBackwards.getPlatform().getLogger().warning("Missing 1.15 blockstate id for 1.14.4 block " + id);
-            return 0;
-        }
-        return newId;
-    }
-
-
-    public static int getNewBlockId(int id) {
-        int newId = BackwardsMappings.blockMappings.getNewId(id);
-        if (newId == -1) {
-            ViaBackwards.getPlatform().getLogger().warning("Missing 1.15 block id for 1.14.4 block " + id);
-            return id;
-        }
-        return newId;
+        new StatisticsRewriter(this, EntityTypeMapping::getOldEntityId).register(ClientboundPackets1_15.STATISTICS);
     }
 
     @Override
     public void init(UserConnection user) {
-        if (!user.has(ClientWorld.class))
-            user.put(new ClientWorld(user));
-        if (!user.has(ImmediateRespawn.class))
+        if (!user.has(ImmediateRespawn.class)) {
             user.put(new ImmediateRespawn(user));
-        if (!user.has(EntityTracker.class))
+        }
+        if (!user.has(EntityTracker.class)) {
             user.put(new EntityTracker(user));
+        }
         user.get(EntityTracker.class).initProtocol(this);
     }
 
     public BlockItemPackets1_15 getBlockItemPackets() {
         return blockItemPackets;
     }
+
+    @Override
+    public BackwardsMappings getMappingData() {
+        return MAPPINGS;
+    }
 }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_14_4to1_15/data/BackwardsMappings.java

@@ -1,29 +0,0 @@
-package nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.data;
-
-import nl.matsv.viabackwards.ViaBackwards;
-import nl.matsv.viabackwards.api.data.VBItemMappings;
-import nl.matsv.viabackwards.api.data.VBMappingDataLoader;
-import nl.matsv.viabackwards.api.data.VBMappings;
-import nl.matsv.viabackwards.api.data.VBSoundMappings;
-import us.myles.ViaVersion.api.data.MappingDataLoader;
-import us.myles.ViaVersion.api.data.Mappings;
-import us.myles.viaversion.libs.gson.JsonObject;
-
-public class BackwardsMappings {
-    public static Mappings blockStateMappings;
-    public static Mappings blockMappings;
-    public static VBSoundMappings soundMappings;
-    public static VBItemMappings itemMappings;
-
-    public static void init() {
-        ViaBackwards.getPlatform().getLogger().info("Loading 1.15 -> 1.14.4 mappings...");
-        JsonObject mapping1_14 = MappingDataLoader.getMappingsCache().get("mapping-1.14.json");
-        JsonObject mapping1_15 = MappingDataLoader.getMappingsCache().get("mapping-1.15.json");
-        JsonObject mapping1_14to1_15 = VBMappingDataLoader.loadFromDataDir("mapping-1.14.4to1.15.json");
-
-        blockStateMappings = new VBMappings(mapping1_15.getAsJsonObject("blockstates"), mapping1_14.getAsJsonObject("blockstates"), mapping1_14to1_15.getAsJsonObject("blockstates"));
-        blockMappings = new VBMappings(mapping1_15.getAsJsonObject("blocks"), mapping1_14.getAsJsonObject("blocks"), mapping1_14to1_15.getAsJsonObject("blocks"), false);
-        itemMappings = new VBItemMappings(mapping1_15.getAsJsonObject("items"), mapping1_14.getAsJsonObject("items"), mapping1_14to1_15.getAsJsonObject("items"));
-        soundMappings = new VBSoundMappings(mapping1_15.getAsJsonArray("sounds"), mapping1_14.getAsJsonArray("sounds"), mapping1_14to1_15.getAsJsonObject("sounds"));
-    }
-}

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_14_4to1_15/data/ParticleMapping.java

@@ -1,19 +0,0 @@
-package nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.data;
-
-public class ParticleMapping {
-
-    public static int getOldId(int newId) {
-        switch (newId) {
-            case 58: // dripping honey -> dripping lava
-                return 9;
-            case 59: // falling honey -> falling lava
-                return 10;
-            case 60: // landing honey -> landing lava
-                return 11;
-            case 61: // falling nectar -> falling water
-                return 13;
-            default:
-                return newId;
-        }
-    }
-}

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_14_4to1_15/data/RecipeRewriter1_15.java

@@ -1,45 +0,0 @@
-package nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.data;
-
-import nl.matsv.viabackwards.api.rewriters.ItemRewriterBase;
-import nl.matsv.viabackwards.protocol.protocol1_13_2to1_14.data.RecipeRewriter1_14;
-import us.myles.ViaVersion.api.PacketWrapper;
-import us.myles.ViaVersion.api.minecraft.item.Item;
-import us.myles.ViaVersion.api.type.Type;
-
-public class RecipeRewriter1_15 extends RecipeRewriter1_14 {
-
-    public RecipeRewriter1_15(ItemRewriterBase rewriter) {
-        super(rewriter);
-    }
-
-    @Override
-    public void handle(PacketWrapper wrapper, String type) throws Exception {
-        switch (type) {
-            case "crafting_shapeless":
-                handleCraftingShapeless(wrapper);
-                break;
-            case "crafting_shaped":
-                handleCraftingShaped(wrapper);
-                break;
-            case "blasting": // new
-            case "smoking": // new
-            case "campfire_cooking": // new
-            case "smelting":
-                handleSmelting(wrapper);
-                break;
-            case "stonecutting": // new
-                handleStonecutting(wrapper);
-                break;
-        }
-    }
-
-    public void handleStonecutting(PacketWrapper wrapper) throws Exception {
-        wrapper.passthrough(Type.STRING);
-        Item[] items = wrapper.passthrough(Type.FLAT_VAR_INT_ITEM_ARRAY_VAR_INT); // Ingredients
-        for (Item item : items) {
-            rewriter.handleItemToClient(item);
-        }
-
-        rewriter.handleItemToClient(wrapper.passthrough(Type.FLAT_VAR_INT_ITEM)); // Result
-    }
-}

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_14_4to1_15/packets/BlockItemPackets1_15.java

@@ -1,11 +1,7 @@
 package nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.packets;
 
-import nl.matsv.viabackwards.ViaBackwards;
 import nl.matsv.viabackwards.api.rewriters.TranslatableRewriter;
 import nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.Protocol1_14_4To1_15;
-import nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.data.BackwardsMappings;
-import nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.data.ParticleMapping;
-import nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.data.RecipeRewriter1_15;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.minecraft.chunks.Chunk;
 import us.myles.ViaVersion.api.minecraft.chunks.ChunkSection;
@@ -16,24 +12,23 @@ import us.myles.ViaVersion.api.rewriters.BlockRewriter;
 import us.myles.ViaVersion.api.rewriters.ItemRewriter;
 import us.myles.ViaVersion.api.type.Type;
 import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.ServerboundPackets1_14;
+import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.data.RecipeRewriter1_14;
 import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.types.Chunk1_14Type;
 import us.myles.ViaVersion.protocols.protocol1_15to1_14_4.ClientboundPackets1_15;
-import us.myles.ViaVersion.protocols.protocol1_15to1_14_4.data.MappingData;
 import us.myles.ViaVersion.protocols.protocol1_15to1_14_4.types.Chunk1_15Type;
-import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
 
 public class BlockItemPackets1_15 extends nl.matsv.viabackwards.api.rewriters.ItemRewriter<Protocol1_14_4To1_15> {
 
     public BlockItemPackets1_15(Protocol1_14_4To1_15 protocol, TranslatableRewriter translatableRewriter) {
-        super(protocol, translatableRewriter, BlockItemPackets1_15::getOldItemId, BlockItemPackets1_15::getNewItemId, id -> BackwardsMappings.itemMappings.getMappedItem(id));
+        super(protocol, translatableRewriter);
     }
 
     @Override
     protected void registerPackets() {
         ItemRewriter itemRewriter = new ItemRewriter(protocol, this::handleItemToClient, this::handleItemToServer);
-        BlockRewriter blockRewriter = new BlockRewriter(protocol, Type.POSITION1_14, Protocol1_14_4To1_15::getNewBlockStateId, Protocol1_14_4To1_15::getNewBlockId);
+        BlockRewriter blockRewriter = new BlockRewriter(protocol, Type.POSITION1_14);
 
-        new RecipeRewriter1_15(this).registerDefaultHandler(ClientboundPackets1_15.DECLARE_RECIPES);
+        new RecipeRewriter1_14(protocol, this::handleItemToClient).registerDefaultHandler(ClientboundPackets1_15.DECLARE_RECIPES);
 
         protocol.registerIncoming(ServerboundPackets1_14.EDIT_BOOK, new PacketRemapper() {
             @Override
@@ -42,50 +37,12 @@ public class BlockItemPackets1_15 extends nl.matsv.viabackwards.api.rewriters.It
             }
         });
 
-        itemRewriter.registerSetCooldown(ClientboundPackets1_15.COOLDOWN, BlockItemPackets1_15::getOldItemId);
+        itemRewriter.registerSetCooldown(ClientboundPackets1_15.COOLDOWN);
         itemRewriter.registerWindowItems(ClientboundPackets1_15.WINDOW_ITEMS, Type.FLAT_VAR_INT_ITEM_ARRAY);
         itemRewriter.registerSetSlot(ClientboundPackets1_15.SET_SLOT, Type.FLAT_VAR_INT_ITEM);
-
-        protocol.registerOutgoing(ClientboundPackets1_15.TRADE_LIST, new PacketRemapper() {
-            @Override
-            public void registerMap() {
-                handler(new PacketHandler() {
-                    @Override
-                    public void handle(PacketWrapper wrapper) throws Exception {
-                        wrapper.passthrough(Type.VAR_INT);
-                        int size = wrapper.passthrough(Type.UNSIGNED_BYTE);
-                        for (int i = 0; i < size; i++) {
-                            Item input = wrapper.passthrough(Type.FLAT_VAR_INT_ITEM);
-                            handleItemToClient(input);
-
-                            Item output = wrapper.passthrough(Type.FLAT_VAR_INT_ITEM);
-                            handleItemToClient(output);
-
-                            if (wrapper.passthrough(Type.BOOLEAN)) { // Has second item
-                                // Second Item
-                                Item second = wrapper.passthrough(Type.FLAT_VAR_INT_ITEM);
-                                handleItemToClient(second);
-                            }
-
-                            wrapper.passthrough(Type.BOOLEAN);
-                            wrapper.passthrough(Type.INT);
-                            wrapper.passthrough(Type.INT);
-
-                            wrapper.passthrough(Type.INT);
-                            wrapper.passthrough(Type.INT);
-                            wrapper.passthrough(Type.FLOAT);
-                            wrapper.passthrough(Type.INT);
-                        }
-
-                        wrapper.passthrough(Type.VAR_INT);
-                        wrapper.passthrough(Type.VAR_INT);
-                        wrapper.passthrough(Type.BOOLEAN);
-                    }
-                });
-            }
-        });
-
+        itemRewriter.registerTradeList(ClientboundPackets1_15.TRADE_LIST, Type.FLAT_VAR_INT_ITEM);
         itemRewriter.registerEntityEquipment(ClientboundPackets1_15.ENTITY_EQUIPMENT, Type.FLAT_VAR_INT_ITEM);
+        itemRewriter.registerAdvancements(ClientboundPackets1_15.ADVANCEMENTS, Type.FLAT_VAR_INT_ITEM);
         itemRewriter.registerClickWindow(ServerboundPackets1_14.CLICK_WINDOW, Type.FLAT_VAR_INT_ITEM);
         itemRewriter.registerCreativeInvAction(ServerboundPackets1_14.CREATIVE_INVENTORY_ACTION, Type.FLAT_VAR_INT_ITEM);
 
@@ -100,9 +57,8 @@ public class BlockItemPackets1_15 extends nl.matsv.viabackwards.api.rewriters.It
                 handler(new PacketHandler() {
                     @Override
                     public void handle(PacketWrapper wrapper) throws Exception {
-                        ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
-                        Chunk chunk = wrapper.read(new Chunk1_15Type(clientWorld));
-                        wrapper.write(new Chunk1_14Type(clientWorld), chunk);
+                        Chunk chunk = wrapper.read(new Chunk1_15Type());
+                        wrapper.write(new Chunk1_14Type(), chunk);
 
                         if (chunk.isFullChunk()) {
                             int[] biomeData = chunk.getBiomeData();
@@ -132,7 +88,7 @@ public class BlockItemPackets1_15 extends nl.matsv.viabackwards.api.rewriters.It
                             if (section == null) continue;
                             for (int j = 0; j < section.getPaletteSize(); j++) {
                                 int old = section.getPaletteEntry(j);
-                                int newId = Protocol1_14_4To1_15.getNewBlockStateId(old);
+                                int newId = protocol.getMappingData().getNewBlockStateId(old);
                                 section.setPaletteEntry(j, newId);
                             }
                         }
@@ -141,7 +97,7 @@ public class BlockItemPackets1_15 extends nl.matsv.viabackwards.api.rewriters.It
             }
         });
 
-        blockRewriter.registerEffect(ClientboundPackets1_15.EFFECT, 1010, 2001, BlockItemPackets1_15::getOldItemId);
+        blockRewriter.registerEffect(ClientboundPackets1_15.EFFECT, 1010, 2001);
 
         protocol.registerOutgoing(ClientboundPackets1_15.SPAWN_PARTICLE, new PacketRemapper() {
             @Override
@@ -160,40 +116,21 @@ public class BlockItemPackets1_15 extends nl.matsv.viabackwards.api.rewriters.It
                     @Override
                     public void handle(PacketWrapper wrapper) throws Exception {
                         int id = wrapper.get(Type.INT, 0);
-                        int mappedId = ParticleMapping.getOldId(id);
-                        if (id != mappedId) {
-                            wrapper.set(Type.INT, 0, mappedId);
-                        }
-
                         if (id == 3 || id == 23) {
                             int data = wrapper.passthrough(Type.VAR_INT);
-                            wrapper.set(Type.VAR_INT, 0, Protocol1_14_4To1_15.getNewBlockStateId(data));
+                            wrapper.set(Type.VAR_INT, 0, protocol.getMappingData().getNewBlockStateId(data));
                         } else if (id == 32) {
                             Item item = handleItemToClient(wrapper.read(Type.FLAT_VAR_INT_ITEM));
                             wrapper.write(Type.FLAT_VAR_INT_ITEM, item);
                         }
+
+                        int mappedId = protocol.getMappingData().getNewParticleId(id);
+                        if (id != mappedId) {
+                            wrapper.set(Type.INT, 0, mappedId);
+                        }
                     }
                 });
             }
         });
     }
-
-    public static int getNewItemId(int id) {
-        int newId = MappingData.oldToNewItems.get(id);
-        if (newId == -1) {
-            ViaBackwards.getPlatform().getLogger().warning("Missing 1.15 item for 1.14.4 item " + id);
-            return 1;
-        }
-        return newId;
-    }
-
-
-    public static int getOldItemId(int id) {
-        int oldId = MappingData.oldToNewItems.inverse().get(id);
-        if (oldId == -1) {
-            ViaBackwards.getPlatform().getLogger().warning("Missing 1.14.4 item for 1.15 item " + id);
-            return 1;
-        }
-        return oldId;
-    }
 }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_14_4to1_15/packets/EntityPackets1_15.java

@@ -5,7 +5,6 @@ import nl.matsv.viabackwards.api.rewriters.EntityRewriter;
 import nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.Protocol1_14_4To1_15;
 import nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.data.EntityTypeMapping;
 import nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.data.ImmediateRespawn;
-import nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.data.ParticleMapping;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.entities.Entity1_15Types;
 import us.myles.ViaVersion.api.entities.EntityType;
@@ -58,7 +57,7 @@ public class EntityPackets1_15 extends EntityRewriter<Protocol1_14_4To1_15> {
             }
         });
 
-        registerSpawnTrackerWithData(ClientboundPackets1_15.SPAWN_ENTITY, Entity1_15Types.EntityType.FALLING_BLOCK, Protocol1_14_4To1_15::getNewBlockStateId);
+        registerSpawnTrackerWithData(ClientboundPackets1_15.SPAWN_ENTITY, Entity1_15Types.EntityType.FALLING_BLOCK);
 
         protocol.registerOutgoing(ClientboundPackets1_15.SPAWN_MOB, new PacketRemapper() {
             @Override
@@ -91,7 +90,6 @@ public class EntityPackets1_15 extends EntityRewriter<Protocol1_14_4To1_15> {
             public void registerMap() {
                 map(Type.INT);
                 map(Type.LONG, Type.NOTHING); // Seed
-                handler(getDimensionHandler(0));
             }
         });
 
@@ -110,7 +108,6 @@ public class EntityPackets1_15 extends EntityRewriter<Protocol1_14_4To1_15> {
                 map(Type.BOOLEAN); // 6 - Reduce Debug Info
 
                 handler(getTrackerHandler(Entity1_15Types.EntityType.PLAYER, Type.INT));
-                handler(getDimensionHandler(1));
 
                 handler(wrapper -> wrapper.user().get(ImmediateRespawn.class).setImmediateRespawn(wrapper.read(Type.BOOLEAN)));
             }
@@ -193,10 +190,9 @@ public class EntityPackets1_15 extends EntityRewriter<Protocol1_14_4To1_15> {
                 meta.setValue(protocol.getBlockItemPackets().handleItemToClient(item));
             } else if (type == MetaType1_14.BlockID) {
                 int blockstate = (int) meta.getValue();
-                meta.setValue(Protocol1_14_4To1_15.getNewBlockStateId(blockstate));
+                meta.setValue(protocol.getMappingData().getNewBlockStateId(blockstate));
             } else if (type == MetaType1_14.PARTICLE) {
-                Particle particle = (Particle) meta.getValue();
-                particle.setId(ParticleMapping.getOldId(particle.getId()));
+                rewriteParticle((Particle) meta.getValue());
             }
             return meta;
         });

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_15_1to1_15_2/Protocol1_15_1To1_15_2.java

@@ -1,13 +1,8 @@
 package nl.matsv.viabackwards.protocol.protocol1_15_1to1_15_2;
 
 import nl.matsv.viabackwards.api.BackwardsProtocol;
-import us.myles.ViaVersion.api.data.UserConnection;
 import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.ServerboundPackets1_14;
 import us.myles.ViaVersion.protocols.protocol1_15to1_14_4.ClientboundPackets1_15;
 
 public class Protocol1_15_1To1_15_2 extends BackwardsProtocol<ClientboundPackets1_15, ClientboundPackets1_15, ServerboundPackets1_14, ServerboundPackets1_14> {
-
-    public Protocol1_15_1To1_15_2() {
-        super(ClientboundPackets1_15.class, ClientboundPackets1_15.class, ServerboundPackets1_14.class, ServerboundPackets1_14.class);
-    }
 }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_15_2to1_16/Protocol1_15_2To1_16.java

@@ -1,6 +1,5 @@
 package nl.matsv.viabackwards.protocol.protocol1_15_2to1_16;
 
-import nl.matsv.viabackwards.ViaBackwards;
 import nl.matsv.viabackwards.api.BackwardsProtocol;
 import nl.matsv.viabackwards.api.entities.storage.EntityTracker;
 import nl.matsv.viabackwards.api.rewriters.SoundRewriter;
@@ -12,6 +11,7 @@ import nl.matsv.viabackwards.protocol.protocol1_15_2to1_16.packets.EntityPackets
 import nl.matsv.viabackwards.protocol.protocol1_15_2to1_16.storage.PlayerSneakStorage;
 import us.myles.ViaVersion.api.data.UserConnection;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
+import us.myles.ViaVersion.api.rewriters.StatisticsRewriter;
 import us.myles.ViaVersion.api.rewriters.TagRewriter;
 import us.myles.ViaVersion.api.type.Type;
 import us.myles.ViaVersion.packets.State;
@@ -20,13 +20,16 @@ import us.myles.ViaVersion.protocols.protocol1_15to1_14_4.ClientboundPackets1_15
 import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.ClientboundPackets1_16;
 import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.Protocol1_16To1_15_2;
 import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.ServerboundPackets1_16;
-import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.data.MappingData;
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
+import us.myles.ViaVersion.util.GsonUtil;
+import us.myles.viaversion.libs.gson.JsonElement;
+import us.myles.viaversion.libs.gson.JsonObject;
 
 import java.util.UUID;
 
 public class Protocol1_15_2To1_16 extends BackwardsProtocol<ClientboundPackets1_16, ClientboundPackets1_15, ServerboundPackets1_16, ServerboundPackets1_14> {
 
+    public static final BackwardsMappings MAPPINGS = new BackwardsMappings();
     private BlockItemPackets1_16 blockItemPackets;
     private TranslatableRewriter translatableRewriter;
 
@@ -36,7 +39,7 @@ public class Protocol1_15_2To1_16 extends BackwardsProtocol<ClientboundPackets1_
 
     @Override
     protected void registerPackets() {
-        executeAsyncAfterLoaded(Protocol1_16To1_15_2.class, BackwardsMappings::init);
+        executeAsyncAfterLoaded(Protocol1_16To1_15_2.class, MAPPINGS::load);
 
         translatableRewriter = new TranslatableRewriter1_16(this);
         translatableRewriter.registerBossBar(ClientboundPackets1_16.BOSSBAR);
@@ -50,10 +53,25 @@ public class Protocol1_15_2To1_16 extends BackwardsProtocol<ClientboundPackets1_
         EntityPackets1_16 entityPackets = new EntityPackets1_16(this);
         entityPackets.register();
 
+        registerOutgoing(State.STATUS, 0x00, 0x00, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(wrapper -> {
+                    String original = wrapper.passthrough(Type.STRING);
+                    JsonObject object = GsonUtil.getGson().fromJson(original, JsonObject.class);
+                    JsonElement description = object.get("description");
+                    if (description == null) return;
+
+                    translatableRewriter.processText(description);
+                    wrapper.set(Type.STRING, 0, object.toString());
+                });
+            }
+        });
+
         registerOutgoing(ClientboundPackets1_16.CHAT_MESSAGE, new PacketRemapper() {
             @Override
             public void registerMap() {
-                handler(wrapper -> wrapper.write(Type.STRING, translatableRewriter.processText(wrapper.read(Type.STRING))));
+                handler(wrapper -> translatableRewriter.processText(wrapper.passthrough(Type.COMPONENT)));
                 map(Type.BYTE);
                 map(Type.UUID, Type.NOTHING); // Sender
             }
@@ -64,7 +82,7 @@ public class Protocol1_15_2To1_16 extends BackwardsProtocol<ClientboundPackets1_
             public void registerMap() {
                 map(Type.VAR_INT); // Window Id
                 map(Type.VAR_INT); // Window Type
-                handler(wrapper -> wrapper.write(Type.STRING, translatableRewriter.processText(wrapper.read(Type.STRING))));
+                handler(wrapper -> translatableRewriter.processText(wrapper.passthrough(Type.COMPONENT)));
                 handler(wrapper -> {
                     int windowType = wrapper.get(Type.VAR_INT, 1);
                     if (windowType == 20) { // Smithing table
@@ -76,8 +94,7 @@ public class Protocol1_15_2To1_16 extends BackwardsProtocol<ClientboundPackets1_
             }
         });
 
-        SoundRewriter soundRewriter = new SoundRewriter(this,
-                id -> BackwardsMappings.soundMappings.getNewId(id), stringId -> BackwardsMappings.soundMappings.getNewId(stringId));
+        SoundRewriter soundRewriter = new SoundRewriter(this);
         soundRewriter.registerSound(ClientboundPackets1_16.SOUND);
         soundRewriter.registerSound(ClientboundPackets1_16.ENTITY_SOUND);
         soundRewriter.registerNamedSound(ClientboundPackets1_16.NAMED_SOUND);
@@ -95,73 +112,9 @@ public class Protocol1_15_2To1_16 extends BackwardsProtocol<ClientboundPackets1_
             }
         });
 
-        registerOutgoing(ClientboundPackets1_16.ADVANCEMENTS, new PacketRemapper() {
-            @Override
-            public void registerMap() {
-                handler(wrapper -> {
-                    wrapper.passthrough(Type.BOOLEAN); // Reset/clear
-                    int size = wrapper.passthrough(Type.VAR_INT);
-                    for (int i = 0; i < size; i++) {
-                        wrapper.passthrough(Type.STRING); // Identifier
-                        // Parent
-                        if (wrapper.passthrough(Type.BOOLEAN)) {
-                            wrapper.passthrough(Type.STRING);
-                        }
-                        // Display data
-                        if (wrapper.passthrough(Type.BOOLEAN)) {
-                            wrapper.passthrough(Type.STRING); // Title
-                            wrapper.passthrough(Type.STRING); // Description
-                            blockItemPackets.handleItemToClient(wrapper.passthrough(Type.FLAT_VAR_INT_ITEM)); // Icon
-                            wrapper.passthrough(Type.VAR_INT); // Frame type
-                            int flags = wrapper.passthrough(Type.INT); // Flags
-                            if ((flags & 1) != 0) {
-                                wrapper.passthrough(Type.STRING); // Background texture
-                            }
-                            wrapper.passthrough(Type.FLOAT); // X
-                            wrapper.passthrough(Type.FLOAT); // Y
-                        }
+        new TagRewriter(this, entityPackets::getOldEntityId).register(ClientboundPackets1_16.TAGS);
 
-                        wrapper.passthrough(Type.STRING_ARRAY); // Criteria
-                        int arrayLength = wrapper.passthrough(Type.VAR_INT);
-                        for (int array = 0; array < arrayLength; array++) {
-                            wrapper.passthrough(Type.STRING_ARRAY); // String array
-                        }
-                    }
-                });
-            }
-        });
-
-        registerOutgoing(ClientboundPackets1_16.STATISTICS, new PacketRemapper() {
-            @Override
-            public void registerMap() {
-                handler(wrapper -> {
-                    int size = wrapper.passthrough(Type.VAR_INT);
-
-                    int newSize = size;
-                    for (int i = 0; i < size; i++) {
-                        int categoryId = wrapper.read(Type.VAR_INT);
-                        int statisticId = wrapper.read(Type.VAR_INT);
-                        // New statistics
-                        if (statisticId > 49) {
-                            wrapper.read(Type.VAR_INT);
-                            newSize--;
-                            continue;
-                        }
-
-                        wrapper.write(Type.VAR_INT, categoryId);
-                        wrapper.write(Type.VAR_INT, statisticId);
-                        wrapper.passthrough(Type.VAR_INT); // value
-                    }
-
-                    if (newSize != size) {
-                        wrapper.set(Type.VAR_INT, 0, newSize);
-                    }
-                });
-            }
-        });
-
-        new TagRewriter(this, id -> BackwardsMappings.blockMappings.getNewId(id), id ->
-                MappingData.oldToNewItems.inverse().get(id), entityPackets::getOldEntityId).register(ClientboundPackets1_16.TAGS);
+        new StatisticsRewriter(this, entityPackets::getOldEntityId).register(ClientboundPackets1_16.STATISTICS);
 
         registerIncoming(ServerboundPackets1_14.ENTITY_ACTION, new PacketRemapper() {
             @Override
@@ -218,24 +171,6 @@ public class Protocol1_15_2To1_16 extends BackwardsProtocol<ClientboundPackets1_
         cancelIncoming(ServerboundPackets1_14.UPDATE_JIGSAW_BLOCK);
     }
 
-    public static int getNewBlockStateId(int id) {
-        int newId = BackwardsMappings.blockStateMappings.getNewId(id);
-        if (newId == -1) {
-            ViaBackwards.getPlatform().getLogger().warning("Missing 1.16 blockstate id for 1.15 block " + id);
-            return 0;
-        }
-        return newId;
-    }
-
-    public static int getNewBlockId(int id) {
-        int newId = BackwardsMappings.blockMappings.getNewId(id);
-        if (newId == -1) {
-            ViaBackwards.getPlatform().getLogger().warning("Missing 1.16 block id for 1.15 block " + id);
-            return id;
-        }
-        return newId;
-    }
-
     @Override
     public void init(UserConnection user) {
         if (!user.has(ClientWorld.class)) {
@@ -255,4 +190,9 @@ public class Protocol1_15_2To1_16 extends BackwardsProtocol<ClientboundPackets1_
     public TranslatableRewriter getTranslatableRewriter() {
         return translatableRewriter;
     }
+
+    @Override
+    public BackwardsMappings getMappingData() {
+        return MAPPINGS;
+    }
 }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_15_2to1_16/chat/TranslatableRewriter1_16.java

@@ -31,7 +31,7 @@ public class TranslatableRewriter1_16 extends TranslatableRewriter {
         super(protocol);
     }
 
-    protected void processText(JsonElement value) {
+    public void processText(JsonElement value) {
         super.processText(value);
         if (!value.isJsonObject()) return;
 
@@ -98,13 +98,16 @@ public class TranslatableRewriter1_16 extends TranslatableRewriter {
             }
 
             // Check by the greatest diff of the 3 values
-            int rDiff = Math.abs(color.r - r);
-            int gDiff = Math.abs(color.g - g);
-            int bDiff = Math.abs(color.b - b);
-            int maxDiff = Math.max(Math.max(rDiff, gDiff), bDiff);
-            if (closest == null || maxDiff < smallestDiff) {
+            int rAverage = (color.r + r) / 2;
+            int rDiff = color.r - r;
+            int gDiff = color.g - g;
+            int bDiff = color.b - b;
+            int diff = ((2 + (rAverage >> 8)) * rDiff * rDiff)
+                    + (4 * gDiff * gDiff)
+                    + ((2 + ((255 - rAverage) >> 8)) * bDiff * bDiff);
+            if (closest == null || diff < smallestDiff) {
                 closest = color;
-                smallestDiff = maxDiff;
+                smallestDiff = diff;
             }
         }
         return closest.colorName;

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_15_2to1_16/data/BackwardsMappings.java

@@ -1,38 +1,26 @@
 package nl.matsv.viabackwards.protocol.protocol1_15_2to1_16.data;
 
-import nl.matsv.viabackwards.ViaBackwards;
-import nl.matsv.viabackwards.api.data.VBItemMappings;
-import nl.matsv.viabackwards.api.data.VBMappingDataLoader;
-import nl.matsv.viabackwards.api.data.VBMappings;
-import nl.matsv.viabackwards.api.data.VBSoundMappings;
-import us.myles.ViaVersion.api.data.MappingDataLoader;
-import us.myles.ViaVersion.api.data.Mappings;
-import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.data.MappingData;
+import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.Protocol1_16To1_15_2;
 import us.myles.viaversion.libs.gson.JsonObject;
 
 import java.util.HashMap;
 import java.util.Map;
 
-public class BackwardsMappings {
-    public static Mappings blockStateMappings;
-    public static Mappings blockMappings;
-    public static VBSoundMappings soundMappings;
-    public static VBItemMappings itemMappings;
-    public static Map<String, String> attributeMappings = new HashMap<>();
+public class BackwardsMappings extends nl.matsv.viabackwards.api.data.BackwardsMappings {
+    private final Map<String, String> attributeMappings = new HashMap<>();
 
-    public static void init() {
-        ViaBackwards.getPlatform().getLogger().info("Loading 1.16 -> 1.15.2 mappings...");
-        JsonObject mapping1_15 = MappingDataLoader.getMappingsCache().get("mapping-1.15.json");
-        JsonObject mapping1_16 = MappingDataLoader.getMappingsCache().get("mapping-1.16.json");
-        JsonObject mapping1_15to1_16 = VBMappingDataLoader.loadFromDataDir("mapping-1.15to1.16.json");
+    public BackwardsMappings() {
+        super("1.16", "1.15", Protocol1_16To1_15_2.class, true);
+    }
 
-        blockStateMappings = new VBMappings(mapping1_16.getAsJsonObject("blockstates"), mapping1_15.getAsJsonObject("blockstates"), mapping1_15to1_16.getAsJsonObject("blockstates"));
-        blockMappings = new VBMappings(mapping1_16.getAsJsonObject("blocks"), mapping1_15.getAsJsonObject("blocks"), mapping1_15to1_16.getAsJsonObject("blocks"), false);
-        itemMappings = new VBItemMappings(mapping1_16.getAsJsonObject("items"), mapping1_15.getAsJsonObject("items"), mapping1_15to1_16.getAsJsonObject("items"));
-        soundMappings = new VBSoundMappings(mapping1_16.getAsJsonArray("sounds"), mapping1_15.getAsJsonArray("sounds"), mapping1_15to1_16.getAsJsonObject("sounds"));
-
-        for (Map.Entry<String, String> entry : MappingData.attributeMappings.entrySet()) {
+    @Override
+    protected void loadVBExtras(JsonObject oldMappings, JsonObject newMappings) {
+        for (Map.Entry<String, String> entry : Protocol1_16To1_15_2.MAPPINGS.getAttributeMappings().entrySet()) {
             attributeMappings.put(entry.getValue(), entry.getKey());
         }
     }
+
+    public Map<String, String> getAttributeMappings() {
+        return attributeMappings;
+    }
 }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_15_2to1_16/data/MapColorRewriter.java

@@ -0,0 +1,44 @@
+package nl.matsv.viabackwards.protocol.protocol1_15_2to1_16.data;
+
+import us.myles.viaversion.libs.fastutil.ints.Int2IntMap;
+import us.myles.viaversion.libs.fastutil.ints.Int2IntOpenHashMap;
+
+public class MapColorRewriter {
+
+    private static final Int2IntMap MAPPINGS = new Int2IntOpenHashMap();
+
+    static {
+        MAPPINGS.put(208, 113);
+        MAPPINGS.put(209, 114);
+        MAPPINGS.put(210, 114);
+        MAPPINGS.put(211, 112);
+        MAPPINGS.put(212, 152);
+        MAPPINGS.put(213, 83);
+        MAPPINGS.put(214, 83);
+        MAPPINGS.put(215, 155);
+        MAPPINGS.put(216, 143);
+        MAPPINGS.put(217, 115);
+        MAPPINGS.put(218, 115);
+        MAPPINGS.put(219, 143);
+        MAPPINGS.put(220, 127);
+        MAPPINGS.put(221, 127);
+        MAPPINGS.put(222, 127);
+        MAPPINGS.put(223, 95);
+        MAPPINGS.put(224, 127);
+        MAPPINGS.put(225, 127);
+        MAPPINGS.put(226, 124);
+        MAPPINGS.put(227, 95);
+        MAPPINGS.put(228, 187);
+        MAPPINGS.put(229, 155);
+        MAPPINGS.put(230, 184);
+        MAPPINGS.put(231, 187);
+        MAPPINGS.put(232, 127);
+        MAPPINGS.put(233, 124);
+        MAPPINGS.put(234, 125);
+        MAPPINGS.put(235, 127);
+    }
+
+    public static int getMappedColor(int color) {
+        return MAPPINGS.getOrDefault(color, -1);
+    }
+}

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_15_2to1_16/data/RecipeRewriter1_16.java

@@ -1,84 +0,0 @@
-package nl.matsv.viabackwards.protocol.protocol1_15_2to1_16.data;
-
-import nl.matsv.viabackwards.api.rewriters.ItemRewriterBase;
-import nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.data.RecipeRewriter1_15;
-import us.myles.ViaVersion.api.PacketWrapper;
-import us.myles.ViaVersion.api.minecraft.item.Item;
-import us.myles.ViaVersion.api.protocol.ClientboundPacketType;
-import us.myles.ViaVersion.api.remapper.PacketRemapper;
-import us.myles.ViaVersion.api.type.Type;
-
-public class RecipeRewriter1_16 extends RecipeRewriter1_15 {
-
-    public RecipeRewriter1_16(ItemRewriterBase rewriter) {
-        super(rewriter);
-    }
-
-    public void register(ClientboundPacketType packetType) {
-        // Remove new smithing type, only in this handler
-        rewriter.getProtocol().registerOutgoing(packetType, new PacketRemapper() {
-            @Override
-            public void registerMap() {
-                handler(wrapper -> {
-                    int size = wrapper.passthrough(Type.VAR_INT);
-                    int newSize = size;
-                    for (int i = 0; i < size; i++) {
-                        String originalType = wrapper.read(Type.STRING);
-                        String type = originalType.replace("minecraft:", "");
-                        if (type.equals("smithing")) {
-                            newSize--;
-
-                            wrapper.read(Type.STRING);
-                            wrapper.read(Type.FLAT_VAR_INT_ITEM_ARRAY_VAR_INT);
-                            wrapper.read(Type.FLAT_VAR_INT_ITEM_ARRAY_VAR_INT);
-                            wrapper.read(Type.FLAT_VAR_INT_ITEM);
-                            continue;
-                        }
-
-                        wrapper.write(Type.STRING, originalType);
-                        String id = wrapper.passthrough(Type.STRING); // Recipe Identifier
-                        handle(wrapper, type);
-                    }
-
-                    wrapper.set(Type.VAR_INT, 0, newSize);
-                });
-            }
-        });
-    }
-
-    @Override
-    public void handle(PacketWrapper wrapper, String type) throws Exception {
-        switch (type) {
-            case "crafting_shapeless":
-                handleCraftingShapeless(wrapper);
-                break;
-            case "crafting_shaped":
-                handleCraftingShaped(wrapper);
-                break;
-            case "blasting":
-            case "smoking":
-            case "campfire_cooking":
-            case "smelting":
-                handleSmelting(wrapper);
-                break;
-            case "stonecutting":
-                handleStonecutting(wrapper);
-                break;
-            case "smithing": // new
-                handleSmithing(wrapper);
-                break;
-        }
-    }
-
-    public void handleSmithing(PacketWrapper wrapper) throws Exception {
-        Item[] baseIngredients = wrapper.passthrough(Type.FLAT_VAR_INT_ITEM_ARRAY_VAR_INT);
-        for (Item item : baseIngredients) {
-            rewriter.handleItemToClient(item);
-        }
-        Item[] ingredients = wrapper.passthrough(Type.FLAT_VAR_INT_ITEM_ARRAY_VAR_INT);
-        for (Item item : ingredients) {
-            rewriter.handleItemToClient(item);
-        }
-        rewriter.handleItemToClient(wrapper.passthrough(Type.FLAT_VAR_INT_ITEM)); // Result
-    }
-}

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_15_2to1_16/packets/BlockItemPackets1_16.java

@@ -1,12 +1,11 @@
 package nl.matsv.viabackwards.protocol.protocol1_15_2to1_16.packets;
 
-import nl.matsv.viabackwards.ViaBackwards;
 import nl.matsv.viabackwards.api.rewriters.EnchantmentRewriter;
 import nl.matsv.viabackwards.api.rewriters.TranslatableRewriter;
 import nl.matsv.viabackwards.protocol.protocol1_15_2to1_16.Protocol1_15_2To1_16;
-import nl.matsv.viabackwards.protocol.protocol1_15_2to1_16.data.BackwardsMappings;
-import nl.matsv.viabackwards.protocol.protocol1_15_2to1_16.data.RecipeRewriter1_16;
+import nl.matsv.viabackwards.protocol.protocol1_15_2to1_16.data.MapColorRewriter;
 import us.myles.ViaVersion.api.PacketWrapper;
+import us.myles.ViaVersion.api.minecraft.Position;
 import us.myles.ViaVersion.api.minecraft.chunks.Chunk;
 import us.myles.ViaVersion.api.minecraft.chunks.ChunkSection;
 import us.myles.ViaVersion.api.minecraft.item.Item;
@@ -16,12 +15,12 @@ import us.myles.ViaVersion.api.rewriters.ItemRewriter;
 import us.myles.ViaVersion.api.type.Type;
 import us.myles.ViaVersion.api.type.types.UUIDIntArrayType;
 import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.ServerboundPackets1_14;
+import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.data.RecipeRewriter1_14;
 import us.myles.ViaVersion.protocols.protocol1_15to1_14_4.ClientboundPackets1_15;
 import us.myles.ViaVersion.protocols.protocol1_15to1_14_4.types.Chunk1_15Type;
 import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.ClientboundPackets1_16;
-import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.data.MappingData;
+import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.packets.InventoryPackets;
 import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.types.Chunk1_16Type;
-import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
 import us.myles.ViaVersion.util.CompactArrayUtil;
 import us.myles.viaversion.libs.opennbt.tag.builtin.CompoundTag;
 import us.myles.viaversion.libs.opennbt.tag.builtin.IntArrayTag;
@@ -38,57 +37,51 @@ public class BlockItemPackets1_16 extends nl.matsv.viabackwards.api.rewriters.It
     private EnchantmentRewriter enchantmentRewriter;
 
     public BlockItemPackets1_16(Protocol1_15_2To1_16 protocol, TranslatableRewriter translatableRewriter) {
-        super(protocol, translatableRewriter,
-                BlockItemPackets1_16::getOldItemId, BlockItemPackets1_16::getNewItemId, id -> BackwardsMappings.itemMappings.getMappedItem(id));
+        super(protocol, translatableRewriter);
     }
 
     @Override
     protected void registerPackets() {
         ItemRewriter itemRewriter = new ItemRewriter(protocol, this::handleItemToClient, this::handleItemToServer);
-        BlockRewriter blockRewriter = new BlockRewriter(protocol, Type.POSITION1_14, Protocol1_15_2To1_16::getNewBlockStateId, Protocol1_15_2To1_16::getNewBlockId);
+        BlockRewriter blockRewriter = new BlockRewriter(protocol, Type.POSITION1_14);
 
-        new RecipeRewriter1_16(this).register(ClientboundPackets1_16.DECLARE_RECIPES);
-
-        itemRewriter.registerSetCooldown(ClientboundPackets1_16.COOLDOWN, BlockItemPackets1_16::getOldItemId);
-        itemRewriter.registerWindowItems(ClientboundPackets1_16.WINDOW_ITEMS, Type.FLAT_VAR_INT_ITEM_ARRAY);
-        itemRewriter.registerSetSlot(ClientboundPackets1_16.SET_SLOT, Type.FLAT_VAR_INT_ITEM);
-
-        protocol.registerOutgoing(ClientboundPackets1_16.TRADE_LIST, new PacketRemapper() {
+        RecipeRewriter1_14 recipeRewriter = new RecipeRewriter1_14(protocol, this::handleItemToClient);
+        // Remove new smithing type, only in this handler
+        protocol.registerOutgoing(ClientboundPackets1_16.DECLARE_RECIPES, new PacketRemapper() {
             @Override
             public void registerMap() {
                 handler(wrapper -> {
-                    wrapper.passthrough(Type.VAR_INT);
-                    int size = wrapper.passthrough(Type.UNSIGNED_BYTE);
+                    int size = wrapper.passthrough(Type.VAR_INT);
+                    int newSize = size;
                     for (int i = 0; i < size; i++) {
-                        Item input = wrapper.passthrough(Type.FLAT_VAR_INT_ITEM);
-                        handleItemToClient(input);
+                        String originalType = wrapper.read(Type.STRING);
+                        String type = originalType.replace("minecraft:", "");
+                        if (type.equals("smithing")) {
+                            newSize--;
 
-                        Item output = wrapper.passthrough(Type.FLAT_VAR_INT_ITEM);
-                        handleItemToClient(output);
-
-                        if (wrapper.passthrough(Type.BOOLEAN)) { // Has second item
-                            // Second Item
-                            Item second = wrapper.passthrough(Type.FLAT_VAR_INT_ITEM);
-                            handleItemToClient(second);
+                            wrapper.read(Type.STRING);
+                            wrapper.read(Type.FLAT_VAR_INT_ITEM_ARRAY_VAR_INT);
+                            wrapper.read(Type.FLAT_VAR_INT_ITEM_ARRAY_VAR_INT);
+                            wrapper.read(Type.FLAT_VAR_INT_ITEM);
+                            continue;
                         }
 
-                        wrapper.passthrough(Type.BOOLEAN);
-                        wrapper.passthrough(Type.INT);
-                        wrapper.passthrough(Type.INT);
-
-                        wrapper.passthrough(Type.INT);
-                        wrapper.passthrough(Type.INT);
-                        wrapper.passthrough(Type.FLOAT);
-                        wrapper.passthrough(Type.INT);
+                        wrapper.write(Type.STRING, originalType);
+                        String id = wrapper.passthrough(Type.STRING); // Recipe Identifier
+                        recipeRewriter.handle(wrapper, type);
                     }
 
-                    wrapper.passthrough(Type.VAR_INT);
-                    wrapper.passthrough(Type.VAR_INT);
-                    wrapper.passthrough(Type.BOOLEAN);
+                    wrapper.set(Type.VAR_INT, 0, newSize);
                 });
             }
         });
 
+        itemRewriter.registerSetCooldown(ClientboundPackets1_16.COOLDOWN);
+        itemRewriter.registerWindowItems(ClientboundPackets1_16.WINDOW_ITEMS, Type.FLAT_VAR_INT_ITEM_ARRAY);
+        itemRewriter.registerSetSlot(ClientboundPackets1_16.SET_SLOT, Type.FLAT_VAR_INT_ITEM);
+        itemRewriter.registerTradeList(ClientboundPackets1_16.TRADE_LIST, Type.FLAT_VAR_INT_ITEM);
+        itemRewriter.registerAdvancements(ClientboundPackets1_16.ADVANCEMENTS, Type.FLAT_VAR_INT_ITEM);
+
         blockRewriter.registerAcknowledgePlayerDigging(ClientboundPackets1_16.ACKNOWLEDGE_PLAYER_DIGGING);
         blockRewriter.registerBlockAction(ClientboundPackets1_16.BLOCK_ACTION);
         blockRewriter.registerBlockChange(ClientboundPackets1_16.BLOCK_CHANGE);
@@ -140,16 +133,15 @@ public class BlockItemPackets1_16 extends nl.matsv.viabackwards.api.rewriters.It
             @Override
             public void registerMap() {
                 handler(wrapper -> {
-                    ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
-                    Chunk chunk = wrapper.read(new Chunk1_16Type(clientWorld));
-                    wrapper.write(new Chunk1_15Type(clientWorld), chunk);
+                    Chunk chunk = wrapper.read(new Chunk1_16Type());
+                    wrapper.write(new Chunk1_15Type(), chunk);
 
                     for (int i = 0; i < chunk.getSections().length; i++) {
                         ChunkSection section = chunk.getSections()[i];
                         if (section == null) continue;
                         for (int j = 0; j < section.getPaletteSize(); j++) {
                             int old = section.getPaletteEntry(j);
-                            section.setPaletteEntry(j, Protocol1_15_2To1_16.getNewBlockStateId(old));
+                            section.setPaletteEntry(j, protocol.getMappingData().getNewBlockStateId(old));
                         }
                     }
 
@@ -177,37 +169,15 @@ public class BlockItemPackets1_16 extends nl.matsv.viabackwards.api.rewriters.It
 
                     if (chunk.getBlockEntities() == null) return;
                     for (CompoundTag blockEntity : chunk.getBlockEntities()) {
-                        String id = ((StringTag) blockEntity.get("id")).getValue();
-                        if (id.equals("minecraft:conduit")) {
-                            IntArrayTag targetUuidTag = blockEntity.remove("Target");
-                            if (targetUuidTag == null) continue;
-
-                            // Target -> target_uuid
-                            UUID targetUuid = UUIDIntArrayType.uuidFromIntArray(targetUuidTag.getValue());
-                            blockEntity.put(new StringTag("target_uuid", targetUuid.toString()));
-                        } else if (id.equals("minecraft:skull") && blockEntity.get("SkullOwner") instanceof CompoundTag) {
-                            CompoundTag skullOwnerTag = blockEntity.remove("SkullOwner");
-                            IntArrayTag ownerUuidTag = skullOwnerTag.remove("Id");
-                            if (ownerUuidTag != null) {
-                                UUID ownerUuid = UUIDIntArrayType.uuidFromIntArray(ownerUuidTag.getValue());
-                                skullOwnerTag.put(new StringTag("Id", ownerUuid.toString()));
-                            }
-
-                            // SkullOwner -> Owner
-                            CompoundTag ownerTag = new CompoundTag("Owner");
-                            for (Tag tag : skullOwnerTag) {
-                                ownerTag.put(tag);
-                            }
-                            blockEntity.put(ownerTag);
-                        }
+                        handleBlockEntity(blockEntity);
                     }
                 });
             }
         });
 
-        blockRewriter.registerEffect(ClientboundPackets1_16.EFFECT, 1010, 2001, BlockItemPackets1_16::getOldItemId);
-        blockRewriter.registerSpawnParticle(ClientboundPackets1_16.SPAWN_PARTICLE, 3, 23, 32,
-                BlockItemPackets1_16::getNewParticleId, this::handleItemToClient, Type.FLAT_VAR_INT_ITEM, Type.DOUBLE);
+        blockRewriter.registerEffect(ClientboundPackets1_16.EFFECT, 1010, 2001);
+
+        itemRewriter.registerSpawnParticle(ClientboundPackets1_16.SPAWN_PARTICLE, Type.FLAT_VAR_INT_ITEM, Type.DOUBLE);
 
         protocol.registerOutgoing(ClientboundPackets1_16.WINDOW_PROPERTY, new PacketRemapper() {
             @Override
@@ -229,6 +199,55 @@ public class BlockItemPackets1_16 extends nl.matsv.viabackwards.api.rewriters.It
             }
         });
 
+        protocol.registerOutgoing(ClientboundPackets1_16.MAP_DATA, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                map(Type.VAR_INT); // Map ID
+                map(Type.BYTE); // Scale
+                map(Type.BOOLEAN); // Tracking Position
+                map(Type.BOOLEAN); // Locked
+                handler(wrapper -> {
+                    int iconCount = wrapper.passthrough(Type.VAR_INT);
+                    for (int i = 0; i < iconCount; i++) {
+                        wrapper.passthrough(Type.VAR_INT); // Type
+                        wrapper.passthrough(Type.BYTE); // X
+                        wrapper.passthrough(Type.BYTE); // Z
+                        wrapper.passthrough(Type.BYTE); // Direction
+                        if (wrapper.passthrough(Type.BOOLEAN)) {
+                            wrapper.passthrough(Type.COMPONENT); // Display Name
+                        }
+                    }
+
+                    short columns = wrapper.passthrough(Type.UNSIGNED_BYTE);
+                    if (columns < 1) return;
+
+                    wrapper.passthrough(Type.UNSIGNED_BYTE); // Rows
+                    wrapper.passthrough(Type.UNSIGNED_BYTE); // X
+                    wrapper.passthrough(Type.UNSIGNED_BYTE); // Z
+                    byte[] data = wrapper.passthrough(Type.BYTE_ARRAY_PRIMITIVE);
+                    for (int i = 0; i < data.length; i++) {
+                        int color = data[i] & 0xFF;
+                        int mappedColor = MapColorRewriter.getMappedColor(color);
+                        if (mappedColor != -1) {
+                            data[i] = (byte) mappedColor;
+                        }
+                    }
+                });
+            }
+        });
+
+        protocol.registerOutgoing(ClientboundPackets1_16.BLOCK_ENTITY_DATA, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(wrapper -> {
+                    Position position = wrapper.passthrough(Type.POSITION1_14);
+                    short action = wrapper.passthrough(Type.UNSIGNED_BYTE);
+                    CompoundTag tag = wrapper.passthrough(Type.NBT);
+                    handleBlockEntity(tag);
+                });
+            }
+        });
+
         itemRewriter.registerClickWindow(ServerboundPackets1_14.CLICK_WINDOW, Type.FLAT_VAR_INT_ITEM);
         itemRewriter.registerCreativeInvAction(ServerboundPackets1_14.CREATIVE_INVENTORY_ACTION, Type.FLAT_VAR_INT_ITEM);
 
@@ -240,29 +259,36 @@ public class BlockItemPackets1_16 extends nl.matsv.viabackwards.api.rewriters.It
         });
     }
 
-    public static int getNewParticleId(int id) {
-        switch (id) {
-            case 27: // soul flame -> flame
-                return 26;
-            case 28: // soul -> smoke
-                return 42;
-            case 64: // ash, crimson spore, warped spore -> mycelium
-            case 65:
-            case 66:
-                return 37;
-            case 67: // dripping obsidian tear -> dripping lava
-                return 9;
-            case 68: // falling obsidian tear
-                return 10;
-            case 69: // landing obsidian tear
-                return 11;
-            case 70: // reversed portal -> portal
-                return 40;
+    private void handleBlockEntity(CompoundTag tag) {
+        StringTag idTag = tag.get("id");
+        if (idTag == null) return;
+
+        String id = idTag.getValue();
+        if (id.equals("minecraft:conduit")) {
+            Tag targetUuidTag = tag.remove("Target");
+            if (!(targetUuidTag instanceof IntArrayTag)) return;
+
+            // Target -> target_uuid
+            UUID targetUuid = UUIDIntArrayType.uuidFromIntArray((int[]) targetUuidTag.getValue());
+            tag.put(new StringTag("target_uuid", targetUuid.toString()));
+        } else if (id.equals("minecraft:skull")) {
+            Tag skullOwnerTag = tag.remove("SkullOwner");
+            if (!(skullOwnerTag instanceof CompoundTag)) return;
+
+            CompoundTag skullOwnerCompoundTag = (CompoundTag) skullOwnerTag;
+            Tag ownerUuidTag = skullOwnerCompoundTag.remove("Id");
+            if (ownerUuidTag instanceof IntArrayTag) {
+                UUID ownerUuid = UUIDIntArrayType.uuidFromIntArray((int[]) ownerUuidTag.getValue());
+                skullOwnerCompoundTag.put(new StringTag("Id", ownerUuid.toString()));
+            }
+
+            // SkullOwner -> Owner
+            CompoundTag ownerTag = new CompoundTag("Owner");
+            for (Tag t : skullOwnerCompoundTag) {
+                ownerTag.put(t);
+            }
+            tag.put(ownerTag);
         }
-        if (id > 27) {
-            id -= 2;
-        }
-        return id;
     }
 
     @Override
@@ -290,6 +316,7 @@ public class BlockItemPackets1_16 extends nl.matsv.viabackwards.api.rewriters.It
             }
         }
 
+        InventoryPackets.newToOldAttributes(item);
         enchantmentRewriter.handleToClient(item);
         return item;
     }
@@ -314,28 +341,11 @@ public class BlockItemPackets1_16 extends nl.matsv.viabackwards.api.rewriters.It
             }
         }
 
+        InventoryPackets.oldToNewAttributes(item);
         enchantmentRewriter.handleToServer(item);
         return item;
     }
 
-    public static int getNewItemId(int id) {
-        int newId = MappingData.oldToNewItems.get(id);
-        if (newId == -1) {
-            ViaBackwards.getPlatform().getLogger().warning("Missing 1.16 item for 1.15 item " + id);
-            return 1;
-        }
-        return newId;
-    }
-
-    public static int getOldItemId(int id) {
-        int oldId = MappingData.oldToNewItems.inverse().get(id);
-        if (oldId == -1) {
-            ViaBackwards.getPlatform().getLogger().warning("Missing 1.15 item for 1.16 item " + id);
-            return 1;
-        }
-        return oldId;
-    }
-
     private static final class EquipmentData {
         private final int slot;
         private final Item item;

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_15_2to1_16/packets/EntityPackets1_16.java

@@ -1,9 +1,7 @@
 package nl.matsv.viabackwards.protocol.protocol1_15_2to1_16.packets;
 
 import nl.matsv.viabackwards.api.rewriters.EntityRewriter;
-import nl.matsv.viabackwards.protocol.protocol1_14_4to1_15.data.ParticleMapping;
 import nl.matsv.viabackwards.protocol.protocol1_15_2to1_16.Protocol1_15_2To1_16;
-import nl.matsv.viabackwards.protocol.protocol1_15_2to1_16.data.BackwardsMappings;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.entities.Entity1_15Types;
 import us.myles.ViaVersion.api.entities.Entity1_16Types;
@@ -17,8 +15,10 @@ import us.myles.ViaVersion.api.remapper.ValueTransformer;
 import us.myles.ViaVersion.api.type.Type;
 import us.myles.ViaVersion.api.type.types.Particle;
 import us.myles.ViaVersion.api.type.types.version.Types1_14;
+import us.myles.ViaVersion.protocols.protocol1_15to1_14_4.ClientboundPackets1_15;
 import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.ClientboundPackets1_16;
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
+import us.myles.viaversion.libs.gson.JsonElement;
 
 public class EntityPackets1_16 extends EntityRewriter<Protocol1_15_2To1_16> {
 
@@ -43,7 +43,7 @@ public class EntityPackets1_16 extends EntityRewriter<Protocol1_15_2To1_16> {
 
     @Override
     protected void registerPackets() {
-        registerSpawnTrackerWithData(ClientboundPackets1_16.SPAWN_ENTITY, Entity1_16Types.EntityType.FALLING_BLOCK, Protocol1_15_2To1_16::getNewBlockStateId);
+        registerSpawnTrackerWithData(ClientboundPackets1_16.SPAWN_ENTITY, Entity1_16Types.EntityType.FALLING_BLOCK);
         registerSpawnTracker(ClientboundPackets1_16.SPAWN_MOB);
 
         protocol.registerOutgoing(ClientboundPackets1_16.RESPAWN, new PacketRemapper() {
@@ -56,7 +56,19 @@ public class EntityPackets1_16 extends EntityRewriter<Protocol1_15_2To1_16> {
                 map(Type.BYTE, Type.NOTHING); // Previous gamemode
                 handler(wrapper -> {
                     ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
-                    clientWorld.setEnvironment(wrapper.get(Type.INT, 0));
+                    int dimension = wrapper.get(Type.INT, 0);
+
+                    // Send a dummy respawn with a different dimension if the previous one is equal to the new
+                    if (clientWorld.getEnvironment() != null && dimension == clientWorld.getEnvironment().getId()) {
+                        PacketWrapper packet = wrapper.create(ClientboundPackets1_15.RESPAWN.ordinal());
+                        packet.write(Type.INT, dimension == 0 ? -1 : 0);
+                        packet.write(Type.LONG, 0L);
+                        packet.write(Type.UNSIGNED_BYTE, (short) 0);
+                        packet.write(Type.STRING, "default");
+                        packet.send(Protocol1_15_2To1_16.class, true, true);
+                    }
+
+                    clientWorld.setEnvironment(dimension);
 
                     wrapper.write(Type.STRING, "default"); // Level type
                     wrapper.read(Type.BOOLEAN); // Debug
@@ -114,7 +126,7 @@ public class EntityPackets1_16 extends EntityRewriter<Protocol1_15_2To1_16> {
                     int size = wrapper.passthrough(Type.INT);
                     for (int i = 0; i < size; i++) {
                         String attributeIdentifier = wrapper.read(Type.STRING);
-                        String oldKey = BackwardsMappings.attributeMappings.get(attributeIdentifier);
+                        String oldKey = protocol.getMappingData().getAttributeMappings().get(attributeIdentifier);
                         wrapper.write(Type.STRING, oldKey != null ? oldKey : attributeIdentifier.replace("minecraft:", ""));
 
                         wrapper.passthrough(Type.DOUBLE);
@@ -128,6 +140,45 @@ public class EntityPackets1_16 extends EntityRewriter<Protocol1_15_2To1_16> {
                 });
             }
         });
+
+        protocol.registerOutgoing(ClientboundPackets1_16.PLAYER_INFO, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(packetWrapper -> {
+                    int action = packetWrapper.passthrough(Type.VAR_INT);
+                    int playerCount = packetWrapper.passthrough(Type.VAR_INT);
+                    for (int i = 0; i < playerCount; i++) {
+                        packetWrapper.passthrough(Type.UUID);
+                        if (action == 0) { // Add
+                            packetWrapper.passthrough(Type.STRING);
+                            int properties = packetWrapper.passthrough(Type.VAR_INT);
+                            for (int j = 0; j < properties; j++) {
+                                packetWrapper.passthrough(Type.STRING);
+                                packetWrapper.passthrough(Type.STRING);
+                                if (packetWrapper.passthrough(Type.BOOLEAN)) {
+                                    packetWrapper.passthrough(Type.STRING);
+                                }
+                            }
+                            packetWrapper.passthrough(Type.VAR_INT);
+                            packetWrapper.passthrough(Type.VAR_INT);
+                            if (packetWrapper.passthrough(Type.BOOLEAN)) {
+                                // Display Name
+                                protocol.getTranslatableRewriter().processText(packetWrapper.passthrough(Type.COMPONENT));
+                            }
+                        } else if (action == 1) { // Update Game Mode
+                            packetWrapper.passthrough(Type.VAR_INT);
+                        } else if (action == 2) { // Update Ping
+                            packetWrapper.passthrough(Type.VAR_INT);
+                        } else if (action == 3) { // Update Display Name
+                            if (packetWrapper.passthrough(Type.BOOLEAN)) {
+                                // Display name
+                                protocol.getTranslatableRewriter().processText(packetWrapper.passthrough(Type.COMPONENT));
+                            }
+                        } // 4 = Remove Player
+                    }
+                });
+            }
+        });
     }
 
     @Override
@@ -138,14 +189,13 @@ public class EntityPackets1_16 extends EntityRewriter<Protocol1_15_2To1_16> {
             if (type == MetaType1_14.Slot) {
                 meta.setValue(protocol.getBlockItemPackets().handleItemToClient((Item) meta.getValue()));
             } else if (type == MetaType1_14.BlockID) {
-                meta.setValue(Protocol1_15_2To1_16.getNewBlockStateId((int) meta.getValue()));
+                meta.setValue(protocol.getMappingData().getNewBlockStateId((int) meta.getValue()));
             } else if (type == MetaType1_14.PARTICLE) {
-                Particle particle = (Particle) meta.getValue();
-                particle.setId(ParticleMapping.getOldId(particle.getId()));
+                rewriteParticle((Particle) meta.getValue());
             } else if (type == MetaType1_14.OptChat) {
-                String text = meta.getCastedValue();
+                JsonElement text = meta.getCastedValue();
                 if (text != null) {
-                    meta.setValue(protocol.getTranslatableRewriter().processText(text));
+                    protocol.getTranslatableRewriter().processText(text);
                 }
             }
             return meta;

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_15to1_15_1/Protocol1_15To1_15_1.java

@@ -1,13 +1,8 @@
 package nl.matsv.viabackwards.protocol.protocol1_15to1_15_1;
 
 import nl.matsv.viabackwards.api.BackwardsProtocol;
-import us.myles.ViaVersion.api.data.UserConnection;
 import us.myles.ViaVersion.protocols.protocol1_14to1_13_2.ServerboundPackets1_14;
 import us.myles.ViaVersion.protocols.protocol1_15to1_14_4.ClientboundPackets1_15;
 
 public class Protocol1_15To1_15_1 extends BackwardsProtocol<ClientboundPackets1_15, ClientboundPackets1_15, ServerboundPackets1_14, ServerboundPackets1_14> {
-
-    public Protocol1_15To1_15_1() {
-        super(ClientboundPackets1_15.class, ClientboundPackets1_15.class, ServerboundPackets1_14.class, ServerboundPackets1_14.class);
-    }
 }

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_16_1to1_16_2/Protocol1_16_1To1_16_2.java

@@ -0,0 +1,135 @@
+package nl.matsv.viabackwards.protocol.protocol1_16_1to1_16_2;
+
+import nl.matsv.viabackwards.api.BackwardsProtocol;
+import nl.matsv.viabackwards.api.data.BackwardsMappings;
+import nl.matsv.viabackwards.api.entities.storage.EntityTracker;
+import nl.matsv.viabackwards.api.rewriters.SoundRewriter;
+import nl.matsv.viabackwards.api.rewriters.TranslatableRewriter;
+import nl.matsv.viabackwards.protocol.protocol1_16_1to1_16_2.packets.BlockItemPackets1_16_2;
+import nl.matsv.viabackwards.protocol.protocol1_16_1to1_16_2.packets.EntityPackets1_16_2;
+import us.myles.ViaVersion.api.PacketWrapper;
+import us.myles.ViaVersion.api.data.UserConnection;
+import us.myles.ViaVersion.api.remapper.PacketHandler;
+import us.myles.ViaVersion.api.remapper.PacketRemapper;
+import us.myles.ViaVersion.api.rewriters.StatisticsRewriter;
+import us.myles.ViaVersion.api.rewriters.TagRewriter;
+import us.myles.ViaVersion.api.type.Type;
+import us.myles.ViaVersion.protocols.protocol1_16_2to1_16_1.ClientboundPackets1_16_2;
+import us.myles.ViaVersion.protocols.protocol1_16_2to1_16_1.Protocol1_16_2To1_16_1;
+import us.myles.ViaVersion.protocols.protocol1_16_2to1_16_1.ServerboundPackets1_16_2;
+import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.ClientboundPackets1_16;
+import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.ServerboundPackets1_16;
+import us.myles.viaversion.libs.gson.JsonElement;
+
+public class Protocol1_16_1To1_16_2 extends BackwardsProtocol<ClientboundPackets1_16_2, ClientboundPackets1_16, ServerboundPackets1_16_2, ServerboundPackets1_16> {
+
+    public static final BackwardsMappings MAPPINGS = new BackwardsMappings("1.16.2", "1.16", Protocol1_16_2To1_16_1.class, true);
+    private BlockItemPackets1_16_2 blockItemPackets;
+    private TranslatableRewriter translatableRewriter;
+
+    public Protocol1_16_1To1_16_2() {
+        super(ClientboundPackets1_16_2.class, ClientboundPackets1_16.class, ServerboundPackets1_16_2.class, ServerboundPackets1_16.class);
+    }
+
+    @Override
+    protected void registerPackets() {
+        executeAsyncAfterLoaded(Protocol1_16_2To1_16_1.class, MAPPINGS::load);
+
+        translatableRewriter = new TranslatableRewriter(this);
+        translatableRewriter.registerBossBar(ClientboundPackets1_16_2.BOSSBAR);
+        translatableRewriter.registerCombatEvent(ClientboundPackets1_16_2.COMBAT_EVENT);
+        translatableRewriter.registerDisconnect(ClientboundPackets1_16_2.DISCONNECT);
+        translatableRewriter.registerTabList(ClientboundPackets1_16_2.TAB_LIST);
+        translatableRewriter.registerTitle(ClientboundPackets1_16_2.TITLE);
+        translatableRewriter.registerOpenWindow(ClientboundPackets1_16_2.OPEN_WINDOW);
+        translatableRewriter.registerPing();
+
+        (blockItemPackets = new BlockItemPackets1_16_2(this, translatableRewriter)).register();
+        EntityPackets1_16_2 entityPackets = new EntityPackets1_16_2(this);
+        entityPackets.register();
+
+        SoundRewriter soundRewriter = new SoundRewriter(this);
+        soundRewriter.registerSound(ClientboundPackets1_16_2.SOUND);
+        soundRewriter.registerSound(ClientboundPackets1_16_2.ENTITY_SOUND);
+        soundRewriter.registerNamedSound(ClientboundPackets1_16_2.NAMED_SOUND);
+        soundRewriter.registerStopSound(ClientboundPackets1_16_2.STOP_SOUND);
+
+        registerOutgoing(ClientboundPackets1_16_2.CHAT_MESSAGE, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(wrapper -> {
+                    JsonElement message = wrapper.passthrough(Type.COMPONENT);
+                    translatableRewriter.processText(message);
+                    byte position = wrapper.passthrough(Type.BYTE);
+                    if (position == 2) { // https://bugs.mojang.com/browse/MC-119145
+                        wrapper.clearPacket();
+                        wrapper.setId(ClientboundPackets1_16.TITLE.ordinal());
+                        wrapper.write(Type.VAR_INT, 2);
+                        wrapper.write(Type.COMPONENT, message);
+                    }
+                });
+            }
+        });
+
+        // Recipe book data has been split into 2 separate packets
+        registerIncoming(ServerboundPackets1_16.RECIPE_BOOK_DATA, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        int type = wrapper.read(Type.VAR_INT);
+                        if (type == 0) {
+                            // Shown, change to its own packet
+                            wrapper.passthrough(Type.STRING); // Recipe
+                            wrapper.setId(ServerboundPackets1_16_2.SEEN_RECIPE.ordinal());
+                        } else {
+                            wrapper.cancel();
+
+                            // Settings
+                            for (int i = 0; i < 3; i++) {
+                                sendSeenRecipePacket(i, wrapper);
+                            }
+                        }
+                    }
+
+                    private void sendSeenRecipePacket(int recipeType, PacketWrapper wrapper) throws Exception {
+                        boolean open = wrapper.read(Type.BOOLEAN);
+                        boolean filter = wrapper.read(Type.BOOLEAN);
+
+                        PacketWrapper newPacket = wrapper.create(ServerboundPackets1_16_2.RECIPE_BOOK_DATA.ordinal());
+                        newPacket.write(Type.VAR_INT, recipeType);
+                        newPacket.write(Type.BOOLEAN, open);
+                        newPacket.write(Type.BOOLEAN, filter);
+                        newPacket.sendToServer(Protocol1_16_1To1_16_2.class);
+                    }
+                });
+            }
+        });
+
+        new TagRewriter(this, entityPackets::getOldEntityId).register(ClientboundPackets1_16_2.TAGS);
+
+        new StatisticsRewriter(this, entityPackets::getOldEntityId).register(ClientboundPackets1_16_2.STATISTICS);
+    }
+
+    @Override
+    public void init(UserConnection user) {
+        if (!user.has(EntityTracker.class)) {
+            user.put(new EntityTracker(user));
+        }
+        user.get(EntityTracker.class).initProtocol(this);
+    }
+
+    public BlockItemPackets1_16_2 getBlockItemPackets() {
+        return blockItemPackets;
+    }
+
+    public TranslatableRewriter getTranslatableRewriter() {
+        return translatableRewriter;
+    }
+
+    @Override
+    public BackwardsMappings getMappingData() {
+        return MAPPINGS;
+    }
+}

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_16_1to1_16_2/packets/BlockItemPackets1_16_2.java

@@ -0,0 +1,175 @@
+package nl.matsv.viabackwards.protocol.protocol1_16_1to1_16_2.packets;
+
+import nl.matsv.viabackwards.api.rewriters.TranslatableRewriter;
+import nl.matsv.viabackwards.protocol.protocol1_16_1to1_16_2.Protocol1_16_1To1_16_2;
+import us.myles.ViaVersion.api.minecraft.BlockChangeRecord;
+import us.myles.ViaVersion.api.minecraft.BlockChangeRecord1_8;
+import us.myles.ViaVersion.api.minecraft.Position;
+import us.myles.ViaVersion.api.minecraft.chunks.Chunk;
+import us.myles.ViaVersion.api.minecraft.chunks.ChunkSection;
+import us.myles.ViaVersion.api.remapper.PacketRemapper;
+import us.myles.ViaVersion.api.rewriters.BlockRewriter;
+import us.myles.ViaVersion.api.rewriters.ItemRewriter;
+import us.myles.ViaVersion.api.type.Type;
+import us.myles.ViaVersion.protocols.protocol1_16_2to1_16_1.ClientboundPackets1_16_2;
+import us.myles.ViaVersion.protocols.protocol1_16_2to1_16_1.types.Chunk1_16_2Type;
+import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.ServerboundPackets1_16;
+import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.data.RecipeRewriter1_16;
+import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.types.Chunk1_16Type;
+import us.myles.viaversion.libs.opennbt.tag.builtin.CompoundTag;
+import us.myles.viaversion.libs.opennbt.tag.builtin.IntArrayTag;
+import us.myles.viaversion.libs.opennbt.tag.builtin.IntTag;
+import us.myles.viaversion.libs.opennbt.tag.builtin.ListTag;
+import us.myles.viaversion.libs.opennbt.tag.builtin.StringTag;
+import us.myles.viaversion.libs.opennbt.tag.builtin.Tag;
+
+public class BlockItemPackets1_16_2 extends nl.matsv.viabackwards.api.rewriters.ItemRewriter<Protocol1_16_1To1_16_2> {
+
+    public BlockItemPackets1_16_2(Protocol1_16_1To1_16_2 protocol, TranslatableRewriter translatableRewriter) {
+        super(protocol, translatableRewriter);
+    }
+
+    @Override
+    protected void registerPackets() {
+        ItemRewriter itemRewriter = new ItemRewriter(protocol, this::handleItemToClient, this::handleItemToServer);
+        BlockRewriter blockRewriter = new BlockRewriter(protocol, Type.POSITION1_14);
+
+        new RecipeRewriter1_16(protocol, this::handleItemToClient).registerDefaultHandler(ClientboundPackets1_16_2.DECLARE_RECIPES);
+
+        itemRewriter.registerSetCooldown(ClientboundPackets1_16_2.COOLDOWN);
+        itemRewriter.registerWindowItems(ClientboundPackets1_16_2.WINDOW_ITEMS, Type.FLAT_VAR_INT_ITEM_ARRAY);
+        itemRewriter.registerSetSlot(ClientboundPackets1_16_2.SET_SLOT, Type.FLAT_VAR_INT_ITEM);
+        itemRewriter.registerEntityEquipmentArray(ClientboundPackets1_16_2.ENTITY_EQUIPMENT, Type.FLAT_VAR_INT_ITEM);
+        itemRewriter.registerTradeList(ClientboundPackets1_16_2.TRADE_LIST, Type.FLAT_VAR_INT_ITEM);
+        itemRewriter.registerAdvancements(ClientboundPackets1_16_2.ADVANCEMENTS, Type.FLAT_VAR_INT_ITEM);
+
+        protocol.registerOutgoing(ClientboundPackets1_16_2.UNLOCK_RECIPES, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(wrapper -> {
+                    wrapper.passthrough(Type.VAR_INT);
+                    wrapper.passthrough(Type.BOOLEAN); // Open
+                    wrapper.passthrough(Type.BOOLEAN); // Filter
+                    wrapper.passthrough(Type.BOOLEAN); // Furnace Open
+                    wrapper.passthrough(Type.BOOLEAN); // Filter furnace
+                    // Blast furnace / smoker
+                    wrapper.read(Type.BOOLEAN);
+                    wrapper.read(Type.BOOLEAN);
+                    wrapper.read(Type.BOOLEAN);
+                    wrapper.read(Type.BOOLEAN);
+                });
+            }
+        });
+
+        blockRewriter.registerAcknowledgePlayerDigging(ClientboundPackets1_16_2.ACKNOWLEDGE_PLAYER_DIGGING);
+        blockRewriter.registerBlockAction(ClientboundPackets1_16_2.BLOCK_ACTION);
+        blockRewriter.registerBlockChange(ClientboundPackets1_16_2.BLOCK_CHANGE);
+
+        protocol.registerOutgoing(ClientboundPackets1_16_2.CHUNK_DATA, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(wrapper -> {
+                    Chunk chunk = wrapper.read(new Chunk1_16_2Type());
+                    wrapper.write(new Chunk1_16Type(), chunk);
+
+                    chunk.setIgnoreOldLightData(true);
+                    for (int i = 0; i < chunk.getSections().length; i++) {
+                        ChunkSection section = chunk.getSections()[i];
+                        if (section == null) continue;
+                        for (int j = 0; j < section.getPaletteSize(); j++) {
+                            int old = section.getPaletteEntry(j);
+                            section.setPaletteEntry(j, protocol.getMappingData().getNewBlockStateId(old));
+                        }
+                    }
+
+                    for (CompoundTag blockEntity : chunk.getBlockEntities()) {
+                        if (blockEntity == null) continue;
+
+                        IntTag x = blockEntity.get("x");
+                        IntTag y = blockEntity.get("y");
+                        IntTag z = blockEntity.get("z");
+                        if (x != null && y != null && z != null) {
+                            handleBlockEntity(blockEntity, new Position(x.getValue(), y.getValue().shortValue(), z.getValue()));
+                        }
+                    }
+                });
+            }
+        });
+
+        protocol.registerOutgoing(ClientboundPackets1_16_2.BLOCK_ENTITY_DATA, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(wrapper -> {
+                    Position position = wrapper.passthrough(Type.POSITION1_14);
+                    wrapper.passthrough(Type.UNSIGNED_BYTE);
+                    handleBlockEntity(wrapper.passthrough(Type.NBT), position);
+                });
+            }
+        });
+
+        protocol.registerOutgoing(ClientboundPackets1_16_2.MULTI_BLOCK_CHANGE, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(wrapper -> {
+                    long chunkPosition = wrapper.read(Type.LONG);
+                    wrapper.read(Type.BOOLEAN); // Ignore old light data
+
+                    int chunkX = (int) (chunkPosition >> 42);
+                    int chunkY = (int) (chunkPosition << 44 >> 44);
+                    int chunkZ = (int) (chunkPosition << 22 >> 42);
+                    wrapper.write(Type.INT, chunkX);
+                    wrapper.write(Type.INT, chunkZ);
+
+                    BlockChangeRecord[] blockChangeRecord = wrapper.read(Type.VAR_LONG_BLOCK_CHANGE_RECORD_ARRAY);
+                    wrapper.write(Type.BLOCK_CHANGE_RECORD_ARRAY, blockChangeRecord);
+                    for (int i = 0; i < blockChangeRecord.length; i++) {
+                        BlockChangeRecord record = blockChangeRecord[i];
+                        int blockId = protocol.getMappingData().getNewBlockStateId(record.getBlockId());
+                        // Relative y -> absolute y
+                        blockChangeRecord[i] = new BlockChangeRecord1_8(record.getSectionX(), record.getY(chunkY), record.getSectionZ(), blockId);
+                    }
+                });
+            }
+        });
+
+        blockRewriter.registerEffect(ClientboundPackets1_16_2.EFFECT, 1010, 2001);
+
+        itemRewriter.registerSpawnParticle(ClientboundPackets1_16_2.SPAWN_PARTICLE, Type.FLAT_VAR_INT_ITEM, Type.DOUBLE);
+
+        itemRewriter.registerClickWindow(ServerboundPackets1_16.CLICK_WINDOW, Type.FLAT_VAR_INT_ITEM);
+        itemRewriter.registerCreativeInvAction(ServerboundPackets1_16.CREATIVE_INVENTORY_ACTION, Type.FLAT_VAR_INT_ITEM);
+        protocol.registerIncoming(ServerboundPackets1_16.EDIT_BOOK, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(wrapper -> handleItemToServer(wrapper.passthrough(Type.FLAT_VAR_INT_ITEM)));
+            }
+        });
+    }
+
+    private void handleBlockEntity(CompoundTag tag, Position position) {
+        StringTag idTag = tag.get("id");
+        if (idTag == null) return;
+        if (idTag.getValue().equals("minecraft:skull")) {
+            // Workaround an old client bug: MC-68487
+            Tag skullOwnerTag = tag.get("SkullOwner");
+            if (!(skullOwnerTag instanceof CompoundTag)) return;
+
+            CompoundTag skullOwnerCompoundTag = (CompoundTag) skullOwnerTag;
+            if (!skullOwnerCompoundTag.contains("Id")) return;
+
+            CompoundTag properties = skullOwnerCompoundTag.get("Properties");
+            if (properties == null) return;
+
+            ListTag textures = properties.get("textures");
+            if (textures == null) return;
+
+            CompoundTag first = textures.size() > 0 ? textures.get(0) : null;
+            if (first == null) return;
+
+            // Make the client cache the skinprofile over this uuid
+            int hashCode = first.get("Value").getValue().hashCode();
+            int[] uuidIntArray = {hashCode, 0, 0, 0}; //TODO split texture in 4 for a lower collision chance
+            skullOwnerCompoundTag.put(new IntArrayTag("Id", uuidIntArray));
+        }
+    }
+}

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_16_1to1_16_2/packets/EntityPackets1_16_2.java

@@ -0,0 +1,130 @@
+package nl.matsv.viabackwards.protocol.protocol1_16_1to1_16_2.packets;
+
+import com.google.common.collect.Sets;
+import nl.matsv.viabackwards.api.rewriters.EntityRewriter;
+import nl.matsv.viabackwards.protocol.protocol1_16_1to1_16_2.Protocol1_16_1To1_16_2;
+import us.myles.ViaVersion.api.entities.Entity1_16Types;
+import us.myles.ViaVersion.api.entities.Entity1_16_2Types;
+import us.myles.ViaVersion.api.entities.EntityType;
+import us.myles.ViaVersion.api.minecraft.item.Item;
+import us.myles.ViaVersion.api.minecraft.metadata.MetaType;
+import us.myles.ViaVersion.api.minecraft.metadata.Metadata;
+import us.myles.ViaVersion.api.minecraft.metadata.types.MetaType1_14;
+import us.myles.ViaVersion.api.remapper.PacketRemapper;
+import us.myles.ViaVersion.api.type.Type;
+import us.myles.ViaVersion.api.type.types.Particle;
+import us.myles.ViaVersion.api.type.types.version.Types1_14;
+import us.myles.ViaVersion.protocols.protocol1_16_2to1_16_1.ClientboundPackets1_16_2;
+import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.packets.EntityPackets;
+import us.myles.viaversion.libs.gson.JsonElement;
+import us.myles.viaversion.libs.opennbt.tag.builtin.CompoundTag;
+import us.myles.viaversion.libs.opennbt.tag.builtin.StringTag;
+
+import java.util.Set;
+
+public class EntityPackets1_16_2 extends EntityRewriter<Protocol1_16_1To1_16_2> {
+
+    private final Set<String> oldDimensions = Sets.newHashSet("minecraft:overworld", "minecraft:the_nether", "minecraft:the_end");
+
+    public EntityPackets1_16_2(Protocol1_16_1To1_16_2 protocol) {
+        super(protocol);
+    }
+
+    @Override
+    protected void registerPackets() {
+        registerSpawnTrackerWithData(ClientboundPackets1_16_2.SPAWN_ENTITY, Entity1_16_2Types.EntityType.FALLING_BLOCK);
+        registerSpawnTracker(ClientboundPackets1_16_2.SPAWN_MOB);
+        registerExtraTracker(ClientboundPackets1_16_2.SPAWN_EXPERIENCE_ORB, Entity1_16_2Types.EntityType.EXPERIENCE_ORB);
+        registerExtraTracker(ClientboundPackets1_16_2.SPAWN_PAINTING, Entity1_16_2Types.EntityType.PAINTING);
+        registerExtraTracker(ClientboundPackets1_16_2.SPAWN_PLAYER, Entity1_16_2Types.EntityType.PLAYER);
+        registerEntityDestroy(ClientboundPackets1_16_2.DESTROY_ENTITIES);
+        registerMetadataRewriter(ClientboundPackets1_16_2.ENTITY_METADATA, Types1_14.METADATA_LIST);
+
+        protocol.registerOutgoing(ClientboundPackets1_16_2.JOIN_GAME, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                map(Type.INT); // Entity ID
+                handler(wrapper -> {
+                    boolean hardcore = wrapper.read(Type.BOOLEAN);
+                    short gamemode = wrapper.read(Type.UNSIGNED_BYTE);
+                    if (hardcore) {
+                        gamemode |= 0x08;
+                    }
+                    wrapper.write(Type.UNSIGNED_BYTE, gamemode);
+                });
+                map(Type.BYTE); // Previous Gamemode
+                map(Type.STRING_ARRAY); // World List
+                handler(wrapper -> {
+                    // Just screw the registry and write the defaults for 1.16 and 1.16.1 clients
+                    wrapper.read(Type.NBT);
+                    wrapper.write(Type.NBT, EntityPackets.DIMENSIONS_TAG);
+
+                    CompoundTag dimensionData = wrapper.read(Type.NBT);
+                    wrapper.write(Type.STRING, getDimensionFromData(dimensionData));
+                });
+                map(Type.STRING); // Dimension
+                map(Type.LONG); // Seed
+                handler(wrapper -> {
+                    int maxPlayers = wrapper.read(Type.VAR_INT);
+                    wrapper.write(Type.UNSIGNED_BYTE, (short) Math.max(maxPlayers, 255));
+                });
+                // ...
+                handler(getTrackerHandler(Entity1_16_2Types.EntityType.PLAYER, Type.INT));
+            }
+        });
+
+        protocol.registerOutgoing(ClientboundPackets1_16_2.RESPAWN, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(wrapper -> {
+                    CompoundTag dimensionData = wrapper.read(Type.NBT);
+                    wrapper.write(Type.STRING, getDimensionFromData(dimensionData));
+                });
+            }
+        });
+    }
+
+    private String getDimensionFromData(CompoundTag dimensionData) {
+        // This may technically break other custom dimension settings for 1.16/1.16.1 clients, so those cases are considered semi "unsupported" here
+        StringTag effectsLocation = dimensionData.get("effects");
+        return effectsLocation != null && oldDimensions.contains(effectsLocation.getValue()) ? effectsLocation.getValue() : "minecraft:overworld";
+    }
+
+    @Override
+    protected void registerRewrites() {
+        registerMetaHandler().handle(e -> {
+            Metadata meta = e.getData();
+            MetaType type = meta.getMetaType();
+            if (type == MetaType1_14.Slot) {
+                meta.setValue(protocol.getBlockItemPackets().handleItemToClient((Item) meta.getValue()));
+            } else if (type == MetaType1_14.BlockID) {
+                meta.setValue(protocol.getMappingData().getNewBlockStateId((int) meta.getValue()));
+            } else if (type == MetaType1_14.OptChat) {
+                JsonElement text = meta.getCastedValue();
+                if (text != null) {
+                    protocol.getTranslatableRewriter().processText(text);
+                }
+            } else if (type == MetaType1_14.PARTICLE) {
+                rewriteParticle((Particle) meta.getValue());
+            }
+            return meta;
+        });
+
+        mapTypes(Entity1_16_2Types.EntityType.values(), Entity1_16Types.EntityType.class);
+        mapEntity(Entity1_16_2Types.EntityType.PIGLIN_BRUTE, Entity1_16_2Types.EntityType.PIGLIN).jsonName("Piglin Brute");
+
+        registerMetaHandler().filter(Entity1_16_2Types.EntityType.ABSTRACT_PIGLIN, true).handle(meta -> {
+            if (meta.getIndex() == 15) {
+                meta.getData().setId(16);
+            } else if (meta.getIndex() == 16) {
+                meta.getData().setId(15);
+            }
+            return meta.getData();
+        });
+    }
+
+    @Override
+    protected EntityType getTypeFromId(int typeId) {
+        return Entity1_16_2Types.getTypeFromId(typeId);
+    }
+}

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_16_2to1_16_3/Protocol1_16_2To1_16_3.java

@@ -0,0 +1,8 @@
+package nl.matsv.viabackwards.protocol.protocol1_16_2to1_16_3;
+
+import nl.matsv.viabackwards.api.BackwardsProtocol;
+import us.myles.ViaVersion.protocols.protocol1_16_2to1_16_1.ClientboundPackets1_16_2;
+import us.myles.ViaVersion.protocols.protocol1_16_2to1_16_1.ServerboundPackets1_16_2;
+
+public class Protocol1_16_2To1_16_3 extends BackwardsProtocol<ClientboundPackets1_16_2, ClientboundPackets1_16_2, ServerboundPackets1_16_2, ServerboundPackets1_16_2> {
+}

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_16_3to1_16_4/Protocol1_16_3To1_16_4.java

@@ -0,0 +1,50 @@
+package nl.matsv.viabackwards.protocol.protocol1_16_3to1_16_4;
+
+import nl.matsv.viabackwards.api.BackwardsProtocol;
+import nl.matsv.viabackwards.protocol.protocol1_16_3to1_16_4.storage.PlayerHandStorage;
+import us.myles.ViaVersion.api.data.UserConnection;
+import us.myles.ViaVersion.api.remapper.PacketRemapper;
+import us.myles.ViaVersion.api.type.Type;
+import us.myles.ViaVersion.protocols.protocol1_16_2to1_16_1.ClientboundPackets1_16_2;
+import us.myles.ViaVersion.protocols.protocol1_16_2to1_16_1.ServerboundPackets1_16_2;
+
+public class Protocol1_16_3To1_16_4 extends BackwardsProtocol<ClientboundPackets1_16_2, ClientboundPackets1_16_2, ServerboundPackets1_16_2, ServerboundPackets1_16_2> {
+
+    public Protocol1_16_3To1_16_4() {
+        super(ClientboundPackets1_16_2.class, ClientboundPackets1_16_2.class, ServerboundPackets1_16_2.class, ServerboundPackets1_16_2.class);
+    }
+
+    @Override
+    protected void registerPackets() {
+        registerIncoming(ServerboundPackets1_16_2.EDIT_BOOK, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                map(Type.FLAT_VAR_INT_ITEM);
+                map(Type.BOOLEAN);
+                handler(wrapper -> {
+                    int slot = wrapper.read(Type.VAR_INT);
+                    if (slot == 1) {
+                        wrapper.write(Type.VAR_INT, 40); // offhand
+                    } else {
+                        wrapper.write(Type.VAR_INT, wrapper.user().get(PlayerHandStorage.class).getCurrentHand());
+                    }
+                });
+            }
+        });
+
+        registerIncoming(ServerboundPackets1_16_2.HELD_ITEM_CHANGE, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(wrapper -> {
+                    short slot = wrapper.passthrough(Type.SHORT);
+                    wrapper.user().get(PlayerHandStorage.class).setCurrentHand(slot);
+                });
+            }
+        });
+    }
+
+    @Override
+    public void init(UserConnection user) {
+        user.put(new PlayerHandStorage(user));
+    }
+}

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_16_3to1_16_4/storage/PlayerHandStorage.java

@@ -0,0 +1,21 @@
+package nl.matsv.viabackwards.protocol.protocol1_16_3to1_16_4.storage;
+
+import us.myles.ViaVersion.api.data.StoredObject;
+import us.myles.ViaVersion.api.data.UserConnection;
+
+public class PlayerHandStorage extends StoredObject {
+
+    private int currentHand;
+
+    public PlayerHandStorage(UserConnection user) {
+        super(user);
+    }
+
+    public int getCurrentHand() {
+        return currentHand;
+    }
+
+    public void setCurrentHand(int currentHand) {
+        this.currentHand = currentHand;
+    }
+}

core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_16to1_16_1/Protocol1_16To1_16_1.java

@@ -0,0 +1,8 @@
+package nl.matsv.viabackwards.protocol.protocol1_16to1_16_1;
+
+import nl.matsv.viabackwards.api.BackwardsProtocol;
+import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.ClientboundPackets1_16;
+import us.myles.ViaVersion.protocols.protocol1_16to1_15_2.ServerboundPackets1_16;
+
+public class Protocol1_16To1_16_1 extends BackwardsProtocol<ClientboundPackets1_16, ClientboundPackets1_16, ServerboundPackets1_16, ServerboundPackets1_16> {
+}

core/src/main/java/nl/matsv/viabackwards/utils/ChatUtil.java

@@ -12,6 +12,7 @@ public class ChatUtil {
 
     public static String removeUnusedColor(String legacy, char defaultColor, boolean isPrefix) {
         if (legacy == null) return null;
+
         Pattern pattern = isPrefix ? UNUSED_COLOR_PATTERN_PREFIX : UNUSED_COLOR_PATTERN;
         legacy = pattern.matcher(legacy).replaceAll("$1$2");
         StringBuilder builder = new StringBuilder();
@@ -22,10 +23,12 @@ public class ChatUtil {
                 builder.append(current);
                 continue;
             }
+
             current = legacy.charAt(++i);
-            if (current == last) continue;
-            builder.append('§').append(current);
-            last = current;
+            if (current != last) {
+                builder.append('§').append(current);
+                last = current;
+            }
         }
         return builder.toString();
     }

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

@@ -1,5 +1,8 @@
 # If you need help, you can join our Discord - https://viaversion.com/discord
 #
+# Always shows a mapped mob's original name, and not only when hovering over it with the cursor.
+always-show-original-mob-name: true
+#
 # Writes name and level of custom enchantments into the item's lore.
 # Set this to false if you see the entries doubled/if the custom-enchant plugin already writes these into the lore manually.
 add-custom-enchants-into-lore: true

core/src/main/resources/assets/viabackwards/data/mapping-1.13.2to1.14.json

@@ -998,5 +998,15 @@
     "entity.parrot.imitate.panda": "",
     "entity.parrot.imitate.pillager": "",
     "entity.parrot.imitate.ravager": ""
+  },
+  "particles": {
+    "falling_lava": "dripping_lava",
+    "landing_lava": "dripping_lava",
+    "falling_water": "dripping_water",
+    "composter": "happy_villager",
+    "flash": "explosion",
+    "sneeze": "spit",
+    "campfire_cosy_smoke": "cloud",
+    "campfire_signal_smoke": "cloud"
   }
 }

core/src/main/resources/assets/viabackwards/data/mapping-1.13to1.13.2.json

@@ -0,0 +1,20 @@
+{
+  "blockstates": {
+    "minecraft:tnt[unstable=false]": "minecraft:tnt",
+    "minecraft:tnt[unstable=true]": "minecraft:tnt",
+    "minecraft:oak_sign": "minecraft:sign[",
+    "minecraft:oak_wall_sign": "minecraft:wall_sign[",
+    "minecraft:smooth_stone_slab": "minecraft:stone_slab[",
+    "minecraft:dead_tube_coral": "minecraft:tube_coral",
+    "minecraft:dead_brain_coral": "minecraft:brain_coral",
+    "minecraft:dead_bubble_coral": "minecraft:bubble_coral",
+    "minecraft:dead_fire_coral": "minecraft:fire_coral",
+    "minecraft:dead_horn_coral": "minecraft:horn_coral",
+    "minecraft:tube_coral": "minecraft:tube_coral",
+    "minecraft:brain_coral": "minecraft:brain_coral",
+    "minecraft:bubble_coral": "minecraft:bubble_coral",
+    "minecraft:fire_coral": "minecraft:fire_coral",
+    "minecraft:horn_coral": "minecraft:horn_coral",
+    "minecraft:conduit": "minecraft:conduit"
+  }
+}

core/src/main/resources/assets/viabackwards/data/mapping-1.14to1.15.json

@@ -88,5 +88,11 @@
     "item.honey_bottle.drink": "entity.generic.drink",
     "entity.iron_golem.damage": "entity.item.break",
     "entity.iron_golem.repair": "entity.iron_golem.step"
+  },
+  "particles": {
+    "dripping_honey": "dripping_lava",
+    "falling_honey": "falling_lava",
+    "landing_honey": "landing_lava",
+    "falling_nectar": "falling_water"
   }
 }

core/src/main/resources/assets/viabackwards/data/mapping-1.15to1.16.json

@@ -5864,39 +5864,39 @@
       "name": "1.16 Netherite Scrap"
     },
     "minecraft:netherite_sword": {
-      "id": "minecraft:iron_sword",
+      "id": "minecraft:diamond_sword",
       "name": "1.16 Netherite Sword"
     },
     "minecraft:netherite_shovel": {
-      "id": "minecraft:iron_shovel",
+      "id": "minecraft:diamond_shovel",
       "name": "1.16 Netherite Shovel"
     },
     "minecraft:netherite_pickaxe": {
-      "id": "minecraft:iron_pickaxe",
+      "id": "minecraft:diamond_pickaxe",
       "name": "1.16 Netherite Pickaxe"
     },
     "minecraft:netherite_axe": {
-      "id": "minecraft:iron_axe",
+      "id": "minecraft:diamond_axe",
       "name": "1.16 Netherite Axe"
     },
     "minecraft:netherite_hoe": {
-      "id": "minecraft:iron_hoe",
+      "id": "minecraft:diamond_hoe",
       "name": "1.16 Netherite Hoe"
     },
     "minecraft:netherite_helmet": {
-      "id": "minecraft:chainmail_helmet",
+      "id": "minecraft:diamond_helmet",
       "name": "1.16 Netherite Helmet"
     },
     "minecraft:netherite_chestplate": {
-      "id": "minecraft:chainmail_chestplate",
+      "id": "minecraft:diamond_chestplate",
       "name": "1.16 Netherite Chestplate"
     },
     "minecraft:netherite_leggings": {
-      "id": "minecraft:chainmail_leggings",
+      "id": "minecraft:diamond_leggings",
       "name": "1.16 Netherite Leggings"
     },
     "minecraft:netherite_boots": {
-      "id": "minecraft:chainmail_boots",
+      "id": "minecraft:diamond_boots",
       "name": "1.16 Netherite Boots"
     },
     "minecraft:crying_obsidian": {
@@ -6230,5 +6230,17 @@
     "entity.parrot.imitate.hoglin": "entity.ravager.ambient",
     "entity.parrot.imitate.piglin": "entity.zombie_pigman.ambient",
     "entity.parrot.imitate.zoglin": "entity.ravager.ambient"
+  },
+  "particles": {
+    "soul_fire_flame": "flame",
+    "soul": "smoke",
+    "ash": "mycelium",
+    "crimson_spore": "mycelium",
+    "warped_spore": "mycelium",
+    "dripping_obsidian_tear": "dripping_lava",
+    "falling_obsidian_tear": "falling_lava",
+    "landing_obsidian_tear": "landing_lava",
+    "reverse_portal": "portal",
+    "white_ash": "mycelium"
   }
 }

core/src/main/resources/assets/viabackwards/data/mapping-1.16to1.16.2.json

@@ -0,0 +1,33 @@
+{
+  "blockstates": {
+    "minecraft:lantern[hanging=true,waterlogged=true]": "minecraft:lantern[hanging=true]",
+    "minecraft:lantern[hanging=true,waterlogged=false]": "minecraft:lantern[hanging=true]",
+    "minecraft:lantern[hanging=false,waterlogged=true]": "minecraft:lantern[hanging=false]",
+    "minecraft:lantern[hanging=false,waterlogged=false]": "minecraft:lantern[hanging=false]",
+    "minecraft:soul_lantern[hanging=true,waterlogged=true]": "minecraft:soul_lantern[hanging=true]",
+    "minecraft:soul_lantern[hanging=true,waterlogged=false]": "minecraft:soul_lantern[hanging=true]",
+    "minecraft:soul_lantern[hanging=false,waterlogged=true]": "minecraft:soul_lantern[hanging=false]",
+    "minecraft:soul_lantern[hanging=false,waterlogged=false]": "minecraft:soul_lantern[hanging=false]",
+    "minecraft:chain[axis=x,waterlogged=true]": "minecraft:chain[waterlogged=true]",
+    "minecraft:chain[axis=x,waterlogged=false]": "minecraft:chain[waterlogged=false]",
+    "minecraft:chain[axis=y,waterlogged=true]": "minecraft:chain[waterlogged=true]",
+    "minecraft:chain[axis=y,waterlogged=false]": "minecraft:chain[waterlogged=false]",
+    "minecraft:chain[axis=z,waterlogged=true]": "minecraft:chain[waterlogged=true]",
+    "minecraft:chain[axis=z,waterlogged=false]": "minecraft:chain[waterlogged=false]"
+  },
+  "items": {
+    "minecraft:piglin_brute_spawn_egg": {
+      "id": "minecraft:piglin_spawn_egg",
+      "name": "1.16.2 Piglin Brute Spawn Egg"
+    }
+  },
+  "sounds": {
+    "entity.parrot.imitate.piglin_brute": "entity.parrot.imitate.piglin",
+    "entity.piglin_brute.ambient": "entity.piglin.ambient",
+    "entity.piglin_brute.angry": "entity.piglin.angry",
+    "entity.piglin_brute.death": "entity.piglin.death",
+    "entity.piglin_brute.hurt": "entity.piglin.hurt",
+    "entity.piglin_brute.step": "entity.piglin.step",
+    "entity.piglin_brute.converted_to_zombified": "entity.piglin.converted_to_zombified"
+  }
+}

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

@@ -1,20 +1,44 @@
 {
+  "1.16.2": {
+    "multiplayer.disconnect.missing_tags": "Incomplete set of tags received from server.\nPlease contact server operator.",
+    "chat.square_brackets": "[%s]",
+    "disconnect.exceeded_packet_rate": "Kicked for exceeding packet rate limit",
+    "item.minecraft.piglin_brute_spawn_egg": "Piglin Brute Spawn Egg",
+    "entity.minecraft.piglin_brute": "Piglin Brute",
+    "potion.withAmplifier": "%s %s",
+    "potion.withDuration": "%s (%s)",
+    "advancements.sad_label": ":(",
+    "subtitles.entity.parrot.imitate.piglin_brute": "Parrot snorts mightily",
+    "subtitles.entity.piglin_brute.ambient": "Piglin Brute snorts",
+    "subtitles.entity.piglin_brute.angry": "Piglin Brute snorts angrily",
+    "subtitles.entity.piglin_brute.death": "Piglin Brute dies",
+    "subtitles.entity.piglin_brute.hurt": "Piglin Brute hurts",
+    "subtitles.entity.piglin_brute.step": "Piglin Brute steps",
+    "subtitles.entity.piglin_brute.converted_to_zombified": "Piglin Brute converts to Zombified Piglin",
+    "command.context.parse_error": "%s at position %s: %s",
+    "commands.list.nameAndId": "%s (%s)",
+    "argument.angle.incomplete": "Incomplete (expected 1 angle)",
+    "commands.summon.failed.uuid": "Unable to summon entity due to duplicate UUIDs"
+  },
   "1.16": {
+    "gui.recipebook.search_hint": "Search...",
     "selectWorld.edit.export_worldgen_settings": "Export World Generation Settings",
     "selectWorld.edit.export_worldgen_settings.success": "Exported",
     "selectWorld.edit.export_worldgen_settings.failure": "Export failed",
     "selectWorld.locked": "Locked by another running instance of Minecraft",
     "selectWorld.backupQuestion.experimental": "Worlds using Experimental Settings are not supported",
     "selectWorld.backupWarning.experimental": "This world uses experimental settings that could stop working at any time. We cannot guarantee it will load or work. Here be dragons!",
-    "selectWorld.tooltip.experimental": "This world is using experimental settings",
     "selectWorld.access_failure": "Failed to access world",
     "selectWorld.delete_failure": "Failed to delete world",
+    "selectWorld.data_read": "Reading world data...",
+    "createWorld.preparing": "Preparing for world creation...",
     "datapackFailure.title": "Errors in currently selected datapacks prevented world from loading.\nYou can either try to load only with vanilla datapack (\"safe mode\") or go back to title screen and fix it manually.",
-    "datapackFailure.safeMode": "Safe mode",
-    "editGamerule.title": "Edit game rules",
+    "datapackFailure.safeMode": "Safe Mode",
+    "editGamerule.title": "Edit Game Rules",
     "editGamerule.default": "Default: %s",
     "selectWorld.gameRules": "Game Rules",
-    "selectWorld.import_worldgen_settings": "Import settings",
+    "selectWorld.dataPacks": "Data Packs",
+    "selectWorld.import_worldgen_settings": "Import Settings",
     "selectWorld.import_worldgen_settings.select_file": "Select settings file (.json)",
     "selectWorld.import_worldgen_settings.failure": "Error importing settings",
     "selectWorld.import_worldgen_settings.experimental.title": "Warning! These settings are using experimental features",
@@ -25,15 +49,46 @@
     "generator.custom": "Custom",
     "generator.single_biome_surface": "Single Biome",
     "generator.single_biome_caves": "Caves",
-    "generator.single_biome_floating_islands": "Floating islands",
+    "generator.single_biome_floating_islands": "Floating Islands",
     "multiplayer.status.ping": "%s ms",
     "chat.queue": "[+%s pending lines]",
     "options.entityDistanceScaling": "Entity Distance",
     "options.entityDistancePercent": "%s%%",
+    "options.graphics.fabulous.tooltip": "%s graphics uses screen shaders for drawing weather, clouds and particles behind translucent blocks and water.\nThis may severely impact performance for portable devices and 4K displays.",
+    "options.graphics.fabulous": "Fabulous!",
+    "options.graphics.fancy.tooltip": "Fancy graphics balances performance and quality for the majority of machines.\nWeather, clouds and particles may not appear behind translucent blocks or water.",
+    "options.graphics.fast.tooltip": "Fast graphics reduces the amount of visible rain and snow.\nTransparency effects are disabled for various blocks such as tree-leaves.",
+    "options.graphics.warning.title": "Graphics Device Unsupported",
+    "options.graphics.warning.message": "Your graphics device is detected as unsupported for the %s graphics option.\n\nYou may ignore this and continue, however support will not be provided for your device if you choose to use %s graphics.",
+    "options.graphics.warning.renderer": "Renderer detected: [%s]",
+    "options.graphics.warning.vendor": "Vendor detected: [%s]",
+    "options.graphics.warning.version": "OpenGL Version detected: [%s]",
+    "options.graphics.warning.accept": "Continue without support",
+    "options.graphics.warning.cancel": "Take me back",
     "options.chat.line_spacing": "Line Spacing",
     "options.chat.delay_none": "Chat Delay: None",
     "options.chat.delay": "Chat Delay: %s seconds",
     "title.multiplayer.disabled": "Multiplayer is disabled, please check your launcher settings.",
+    "key.swapOffhand": "Swap Item With Offhand",
+    "pack.available.title": "Available",
+    "pack.selected.title": "Selected",
+    "pack.incompatible": "Incompatible",
+    "pack.incompatible.old": "(Made for an older version of Minecraft)",
+    "pack.incompatible.new": "(Made for a newer version of Minecraft)",
+    "pack.incompatible.confirm.title": "Are you sure you want to load this pack?",
+    "pack.incompatible.confirm.old": "This pack was made for an older version of Minecraft and may no longer work correctly.",
+    "pack.incompatible.confirm.new": "This pack was made for a newer version of Minecraft and may no longer work correctly.",
+    "pack.dropInfo": "Drag and drop files into this window to add packs",
+    "pack.dropConfirm": "Do you want to add following packs to Minecraft?",
+    "pack.copyFailure": "Failed to copy packs",
+    "pack.nameAndSource": "%s (%s)",
+    "pack.openFolder": "Open Pack Folder",
+    "pack.folderInfo": "(Place pack files here)",
+    "dataPack.title": "Select Data Packs",
+    "dataPack.validation.working": "Validating selected data packs...",
+    "dataPack.validation.failed": "Data pack validation failed!",
+    "dataPack.validation.back": "Go Back",
+    "dataPack.validation.reset": "Reset to Default",
     "block.minecraft.nether_gold_ore": "Nether Gold Ore",
     "block.minecraft.soul_torch": "Soul Torch",
     "block.minecraft.soul_wall_torch": "Soul Wall Torch",
@@ -285,7 +340,7 @@
     "subtitles.entity.zombie.break_wooden_door": "Door breaks",
     "subtitles.entity.zombie.destroy_egg": "Turtle Egg stomped",
     "subtitles.entity.zombified_piglin.ambient": "Zombified Piglin grunts",
-    "subtitles.entity.zombified_piglin.angry": "Zombified Piglin angers",
+    "subtitles.entity.zombified_piglin.angry": "Zombified Piglin grunts angrily",
     "subtitles.entity.zombified_piglin.death": "Zombified Piglin dies",
     "subtitles.entity.zombified_piglin.hurt": "Zombified Piglin hurts",
     "subtitles.item.armor.equip_netherite": "Netherite armor clanks",
@@ -298,8 +353,8 @@
     "subtitles.ui.stonecutter.take_result": "Stonecutter used",
     "debug.gamemodes.help": "F3 + F4 = Open game mode switcher",
     "debug.gamemodes.error": "Unable to open game mode switcher, no permission",
-    "debug.gamemodes.press_f4": "F4",
-    "debug.gamemodes.select_next": "Next",
+    "debug.gamemodes.press_f4": "[ F4 ]",
+    "debug.gamemodes.select_next": "%s Next",
     "advancements.adventure.bullseye.title": "Bullseye",
     "advancements.adventure.bullseye.description": "Hit the bullseye of a Target block from at least 30 meters away",
     "advancements.husbandry.netherite_hoe.title": "Serious Dedication",
@@ -310,7 +365,7 @@
     "advancements.nether.netherite_armor.description": "Get a full suit of Netherite armor",
     "advancements.nether.use_lodestone.title": "Country Lode, Take Me Home",
     "advancements.nether.use_lodestone.description": "Use a Compass on a Lodestone",
-    "advancements.nether.obtain_crying_obsidian.title": "Who Is Cutting Onions?",
+    "advancements.nether.obtain_crying_obsidian.title": "Who is Cutting Onions?",
     "advancements.nether.obtain_crying_obsidian.description": "Obtain Crying Obsidian",
     "advancements.nether.charge_respawn_anchor.title": "Not Quite \"Nine\" Lives",
     "advancements.nether.charge_respawn_anchor.description": "Charge a Respawn Anchor to the maximum",
@@ -338,8 +393,10 @@
     "commands.locatebiome.success": "The nearest %s is at %s (%s blocks away)",
     "commands.teleport.invalidPosition": "Invalid position for teleport",
     "commands.reload.failure": "Reload failed, keeping old data",
-    "commands.locatebiome.notFound": "Could not find a biome of type %s within reasonable distance",
-    "commands.locatebiome.invalid": "There is no biome named %s",
+    "commands.datapack.modify.enable": "Enabling data pack %s",
+    "commands.datapack.modify.disable": "Disabling data pack %s",
+    "commands.locatebiome.notFound": "Could not find a biome of type \"%s\" within reasonable distance",
+    "commands.locatebiome.invalid": "There is no biome with type \"%s\"",
     "commands.summon.invalidPosition": "Invalid position for summon",
     "biome.minecraft.nether_wastes": "Nether Wastes",
     "biome.minecraft.soul_sand_valley": "Soul Sand Valley",
@@ -359,17 +416,19 @@
     "gamerule.doLimitedCrafting": "Require recipe for crafting",
     "gamerule.doLimitedCrafting.description": "If enabled, players will be able to craft only unlocked recipes",
     "gamerule.doMobLoot": "Drop mob loot",
-    "gamerule.doMobLoot.description": "Controls resource drops, including experience orbs",
+    "gamerule.doMobLoot.description": "Controls resource drops from mobs, including experience orbs",
     "gamerule.doMobSpawning": "Spawn mobs",
     "gamerule.doMobSpawning.description": "Some entities might have separate rules",
     "gamerule.doPatrolSpawning": "Spawn pillager patrols",
     "gamerule.doTileDrops": "Drop blocks",
-    "gamerule.doTileDrops.description": "Controls resource drops, including experience orbs",
+    "gamerule.doTileDrops.description": "Controls resource drops from blocks, including experience orbs",
     "gamerule.doTraderSpawning": "Spawn wandering traders",
     "gamerule.doWeatherCycle": "Update weather",
     "gamerule.drowningDamage": "Deal drowning damage",
     "gamerule.fallDamage": "Deal fall damage",
     "gamerule.fireDamage": "Deal fire damage",
+    "gamerule.forgiveDeadPlayers": "Forgive dead players",
+    "gamerule.forgiveDeadPlayers.description": "Angered neutral mobs stop being angry when the targeted player dies nearby.",
     "gamerule.keepInventory": "Keep inventory after death",
     "gamerule.logAdminCommands": "Broadcast admin commands",
     "gamerule.maxCommandChainLength": "Command chain size limit",
@@ -384,13 +443,19 @@
     "gamerule.showDeathMessages": "Show death messages",
     "gamerule.spawnRadius": "Respawn location radius",
     "gamerule.spectatorsGenerateChunks": "Allow spectators to generate terrain",
+    "gamerule.universalAnger": "Universal anger",
+    "gamerule.universalAnger.description": "Angered neutral mobs attack any nearby player, not just the player that angered them. Works best if forgiveDeadPlayers is disabled.",
     "gamerule.category.chat": "Chat",
     "gamerule.category.spawning": "Spawning",
     "gamerule.category.updates": "World updates",
     "gamerule.category.drops": "Drops",
     "gamerule.category.mobs": "Mobs",
     "gamerule.category.player": "Player",
-    "gamerule.category.misc": "Miscellaneous"
+    "gamerule.category.misc": "Miscellaneous",
+    "pack.source.builtin": "built-in",
+    "pack.source.world": "world",
+    "pack.source.local": "local",
+    "pack.source.server": "server"
   },
   "1.15": {
     "narration.suggestion.tooltip": "Selected suggestion %d out of %d: %s (%s)",

fabric/pom.xml

@@ -16,7 +16,7 @@
     <parent>
         <artifactId>viabackwards-parent</artifactId>
         <groupId>nl.matsv</groupId>
-        <version>3.0.0</version>
+        <version>3.2.0</version>
     </parent>
 
     <artifactId>viabackwards-fabric</artifactId>

pom.xml

@@ -16,7 +16,7 @@
 
     <groupId>nl.matsv</groupId>
     <artifactId>viabackwards-parent</artifactId>
-    <version>3.0.0</version>
+    <version>3.2.0</version>
     <packaging>pom</packaging>
 
     <description>Allow older clients to join newer server versions.</description>
@@ -65,7 +65,7 @@
         <dependency>
             <groupId>us.myles</groupId>
             <artifactId>viaversion</artifactId>
-            <version>3.0.0-SNAPSHOT</version>
+            <version>3.2.0</version>
             <scope>provided</scope>
         </dependency>
 

sponge/pom.xml

@@ -16,7 +16,7 @@
     <parent>
         <artifactId>viabackwards-parent</artifactId>
         <groupId>nl.matsv</groupId>
-        <version>3.0.0</version>
+        <version>3.2.0</version>
     </parent>
 
     <artifactId>viabackwards-sponge</artifactId>

sponge/src/main/java/nl/matsv/viabackwards/SpongePlugin.java

@@ -19,6 +19,7 @@ import org.spongepowered.api.event.Order;
 import org.spongepowered.api.event.game.state.GameInitializationEvent;
 import org.spongepowered.api.plugin.Dependency;
 import org.spongepowered.api.plugin.Plugin;
+import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.sponge.util.LoggerWrapper;
 
 import java.io.File;
@@ -45,7 +46,7 @@ public class SpongePlugin implements ViaBackwardsPlatform {
         // Setup Logger
         this.logger = new LoggerWrapper(loggerSlf4j);
         // Init!
-        this.init(configPath.resolve("config.yml").toFile());
+        Via.getManager().addEnableListener(() -> this.init(configPath.resolve("config.yml").toFile()));
     }
 
     @Override

velocity/pom.xml

@@ -16,7 +16,7 @@
     <parent>
         <artifactId>viabackwards-parent</artifactId>
         <groupId>nl.matsv</groupId>
-        <version>3.0.0</version>
+        <version>3.2.0</version>
     </parent>
 
     <artifactId>viabackwards-velocity</artifactId>