4.1.2

Alternate implementation of #1136

.github/workflows/build.yml

@@ -3,9 +3,6 @@ on:
   push:
     branches:
       - master
-      - v4
-  pull_request:
-    types: [opened, synchronize, reopened]
 jobs:
   build:
     name: Build
@@ -41,5 +38,5 @@ jobs:
       - name: Upload a Build Artifact
         uses: actions/upload-artifact@v3.1.2 #https://github.com/actions/upload-artifact/releases
         with:
-          name: Jar
+          name: Click here to download
           path: jar/build/libs/TAB-**.jar

README.md

@@ -3,6 +3,17 @@ TAB aims to be a superior all-in-one minecraft plugin for displaying information
 similar plugins in terms of features, performance and compatibility.  
 More information can be found at [Why TAB?](https://github.com/NEZNAMY/TAB/wiki/Why-TAB%3F) wiki page.
 
+# Download
+### Releases
+You can download full releases from [GitHub releases](https://github.com/NEZNAMY/TAB/releases), 
+[SpigotMC](https://www.spigotmc.org/resources/57806/) or [Modrinth](https://modrinth.com/plugin/tab-was-taken).
+
+### Dev builds
+Plugin's development is continuous and contains lots of small changes/fixes not worthy of being called a full
+update, therefore development builds are being created and eventually a full update is released when enough changes are made.  
+If you want to benefit from a recent change in the code before official release, you can download development builds
+from [GitHub actions](https://github.com/NEZNAMY/TAB/actions).  
+
 # Compiling
 Compilation requires JDK 17 and up.  
 To compile the plugin, run `./gradlew build` from the terminal.  
@@ -21,3 +32,26 @@ is in quality of the report. Bug reports where steps to reproduce are "idk" have
 
 # Contributing
 See [CONTRIBUTING.md](https://github.com/NEZNAMY/TAB/blob/master/CONTRIBUTING.md)
+
+# Provided services
+The plugin is being used by a large amount of servers, which also means the demand for my attention is high. Unfortunately, 
+I am no longer able to keep up with the demand since I don't want to dedicate my whole existence to a free plugin. 
+In order to provide the best quality of all provided services, the amount of services provided may vary over time. 
+Here is the full list of potential services and their status:
+
+| Service type                  | Availability |
+|-------------------------------|--------------|
+| Updates for new MC versions   | ✔            |
+| Bug fixes                     | ✔            |
+| Wiki updates<sup>1</sup>      | ✔            |
+| Feature requests              | ❌            |
+| Customer support<sup>2</sup>  | ✔            |
+| Free user support<sup>3</sup> | ❌            |
+| Optimization<sup>4</sup>      | ✔            |
+
+<sup>1</sup> - Adding new examples, guides and other kind of useful information people ask about.  
+<sup>2</sup> - Assistance with the plugin on discord, including answering any questions and helping with 
+configuration to those, who bought a copy of the plugin when it was purchasable.  
+<sup>3</sup> - Like <sup>2</sup>, but for anyone in the world who asks for it.  
+<sup>4</sup> - Improving plugin's performance while not losing out on any features. This was done 
+proactively a lot in the past, so there isn't much to do anymore, only if someone actually finds and reports something.  

build.gradle.kts

@@ -4,7 +4,7 @@ plugins {
 
 allprojects {
     group = "me.neznamy"
-    version = "4.0.9"
+    version = "4.1.2"
     description = "An all-in-one solution that works"
 
     ext.set("id", "tab")
@@ -18,7 +18,16 @@ val platforms = setOf(
     projects.velocity,
     projects.sponge7,
     projects.sponge8,
-    projects.fabric
+    projects.fabric,
+    projects.fabric.v1152,
+    projects.fabric.v1165,
+    projects.fabric.v1171,
+    projects.fabric.v1182,
+    projects.fabric.v1192,
+    projects.fabric.v1193,
+    projects.fabric.v1201,
+    projects.fabric.v1202,
+    projects.fabric.v1204
 ).map { it.dependencyProject }
 
 val special = setOf(

bukkit/build.gradle.kts

@@ -9,5 +9,10 @@ dependencies {
     }
     compileOnly("LibsDisguises:LibsDisguises:10.0.21") {
         exclude("org.spigotmc", "spigot")
+        exclude("org.spigotmc", "spigot-api")
+        exclude("com.github.dmulloy2", "ProtocolLib")
+        exclude("org.ow2.asm", "asm")
+        exclude("net.md-5", "bungeecord-chat")
     }
+    compileOnly("com.github.LeonMangler:PremiumVanishAPI:2.8.8")
 }

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/BukkitPipelineInjector.java

@@ -2,21 +2,26 @@ package me.neznamy.tab.platforms.bukkit;
 
 import com.mojang.authlib.GameProfile;
 import io.netty.channel.Channel;
+import lombok.Getter;
 import lombok.SneakyThrows;
 import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
 import me.neznamy.tab.platforms.bukkit.scoreboard.PacketScoreboard;
 import me.neznamy.tab.shared.TabConstants;
+import me.neznamy.tab.shared.chat.EnumChatFormat;
 import me.neznamy.tab.shared.features.nametags.NameTag;
 import me.neznamy.tab.shared.platform.TabList;
 import me.neznamy.tab.shared.platform.TabPlayer;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
-import me.neznamy.tab.platforms.bukkit.nms.NMSStorage;
 import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.features.injection.NettyPipelineInjector;
 import me.neznamy.tab.shared.features.sorting.Sorting;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import org.bukkit.Bukkit;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
 import java.util.*;
 import java.util.stream.Collectors;
 
@@ -25,6 +30,14 @@ import java.util.stream.Collectors;
  */
 public class BukkitPipelineInjector extends NettyPipelineInjector {
 
+    private static Method getHandle;
+    private static Field PLAYER_CONNECTION;
+    private static Field NETWORK_MANAGER;
+    private static Field CHANNEL;
+
+    @Getter
+    private static boolean available;
+
     /**
      * Constructs new instance
      */
@@ -32,35 +45,55 @@ public class BukkitPipelineInjector extends NettyPipelineInjector {
         super("packet_handler");
     }
 
+    public static void tryLoad() {
+        try {
+            Class<?> NetworkManager = BukkitReflection.getClass("network.Connection", "network.NetworkManager", "NetworkManager");
+            Class<?> PlayerConnection = BukkitReflection.getClass("server.network.ServerGamePacketListenerImpl",
+                    "server.network.PlayerConnection", "PlayerConnection");
+            Class<?> EntityPlayer = BukkitReflection.getClass("server.level.ServerPlayer", "server.level.EntityPlayer", "EntityPlayer");
+            getHandle = Class.forName("org.bukkit.craftbukkit." + BukkitReflection.getServerPackage() + ".entity.CraftPlayer").getMethod("getHandle");
+            PLAYER_CONNECTION = ReflectionUtils.getOnlyField(EntityPlayer, PlayerConnection);
+            if (BukkitReflection.is1_20_2Plus()) {
+                NETWORK_MANAGER = ReflectionUtils.getOnlyField(PlayerConnection.getSuperclass(), NetworkManager);
+            } else {
+                NETWORK_MANAGER = ReflectionUtils.getOnlyField(PlayerConnection, NetworkManager);
+            }
+            CHANNEL = ReflectionUtils.getOnlyField(NetworkManager, Channel.class);
+            available = true;
+        } catch (Exception e) {
+            Bukkit.getConsoleSender().sendMessage(EnumChatFormat.RED.getFormat() + "[TAB] Failed to initialize NMS fields for " +
+                    "network channel injection due to a compatibility error. This will make the following features not work: " +
+                    "Unlimited nametag mode, anti-override for tablist formatting & nametags, detecting nickname change for compatibility " +
+                    "with nick plugins and compatibility with other scoreboard plugins. " +
+                    "Please update the plugin a to version with native support for your server version to unlock the features.");
+        }
+    }
+
     @Override
     @Nullable
+    @SneakyThrows
     protected Channel getChannel(@NotNull TabPlayer player) {
-        BukkitTabPlayer bukkit = (BukkitTabPlayer) player;
-        NMSStorage nms = NMSStorage.getInstance();
-        try {
-            if (nms.CHANNEL != null) return (Channel) nms.CHANNEL.get(nms.NETWORK_MANAGER.get(bukkit.getPlayerConnection()));
-        } catch (IllegalAccessException exception) {
-            TAB.getInstance().getErrorManager().printError("Failed to get channel of " + bukkit.getName(), exception);
-        }
-        return null;
+        return (Channel) CHANNEL.get(NETWORK_MANAGER.get(PLAYER_CONNECTION.get(getHandle.invoke(player.getPlayer()))));
     }
 
     @Override
     @SneakyThrows
     public void onDisplayObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        if (!PacketScoreboard.isAvailable()) return;
         int position;
         if (BukkitReflection.is1_20_2Plus()) {
-            position = ((Enum<?>)PacketScoreboard.DisplayObjective_POSITION.get(packet)).ordinal();
+            position = ((Enum<?>)PacketScoreboard.displayPacketData.DisplayObjective_POSITION.get(packet)).ordinal();
         } else {
-            position = PacketScoreboard.DisplayObjective_POSITION.getInt(packet);
+            position = PacketScoreboard.displayPacketData.DisplayObjective_POSITION.getInt(packet);
         }
         TAB.getInstance().getFeatureManager().onDisplayObjective(player, position,
-                (String) PacketScoreboard.DisplayObjective_OBJECTIVE_NAME.get(packet));
+                (String) PacketScoreboard.displayPacketData.DisplayObjective_OBJECTIVE_NAME.get(packet));
     }
 
     @Override
     @SneakyThrows
     public void onObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        if (!PacketScoreboard.isAvailable()) return;
         TAB.getInstance().getFeatureManager().onObjective(player,
                 PacketScoreboard.Objective_METHOD.getInt(packet),
                 (String) PacketScoreboard.Objective_OBJECTIVE_NAME.get(packet));
@@ -68,17 +101,20 @@ public class BukkitPipelineInjector extends NettyPipelineInjector {
 
     @Override
     public boolean isDisplayObjective(@NotNull Object packet) {
-        return PacketScoreboard.DisplayObjectiveClass.isInstance(packet);
+        if (!PacketScoreboard.isAvailable()) return false;
+        return PacketScoreboard.displayPacketData.DisplayObjectiveClass.isInstance(packet);
     }
 
     @Override
     public boolean isObjective(@NotNull Object packet) {
+        if (!PacketScoreboard.isAvailable()) return false;
         return PacketScoreboard.ObjectivePacketClass.isInstance(packet);
     }
 
     @Override
     public boolean isTeam(@NotNull Object packet) {
-        return PacketScoreboard.TeamPacketClass.isInstance(packet);
+        if (!PacketScoreboard.isAvailable()) return false;
+        return PacketScoreboard.teamPacketData.TeamPacketClass.isInstance(packet);
     }
 
     @Override
@@ -87,55 +123,67 @@ public class BukkitPipelineInjector extends NettyPipelineInjector {
     }
 
     @Override
-    @SneakyThrows
     public void onPlayerInfo(@NotNull TabPlayer receiver, @NotNull Object packet) {
-        List<String> actions;
-        if (BukkitTabList.ClientboundPlayerInfoRemovePacket != null) {
-            //1.19.3+
-            actions = ((EnumSet<?>)BukkitTabList.ACTION.get(packet)).stream().map(Enum::name).collect(Collectors.toList());
+        if (BukkitReflection.is1_19_3Plus()) {
+            onPlayerInfo1_19_3(receiver, packet);
         } else {
-            //1.19.2-
-            actions = Collections.singletonList(BukkitTabList.ACTION.get(packet).toString());
+            onPlayerInfo1_19_2(receiver, packet);
         }
+    }
+
+    @SneakyThrows
+    private void onPlayerInfo1_19_3(@NotNull TabPlayer receiver, @NotNull Object packet) {
+        List<String> actions = ((EnumSet<?>)BukkitTabList.ACTION.get(packet)).stream().map(Enum::name).collect(Collectors.toList());
         List<Object> updatedList = new ArrayList<>();
         for (Object nmsData : (List<?>) BukkitTabList.PLAYERS.get(packet)) {
             GameProfile profile = (GameProfile) BukkitTabList.PlayerInfoData_Profile.get(nmsData);
             UUID id;
-            if (BukkitReflection.is1_19_3Plus()) {
-                id = (UUID) BukkitTabList.PlayerInfoData_UUID.get(nmsData);
-            } else {
-                id = profile.getId();
-            }
+            id = (UUID) BukkitTabList.PlayerInfoData_UUID.get(nmsData);
             Object displayName = null;
             int latency = 0;
-            if (actions.contains(TabList.Action.UPDATE_DISPLAY_NAME.name()) || actions.contains(TabList.Action.ADD_PLAYER.name())) {
+            if (actions.contains(TabList.Action.UPDATE_DISPLAY_NAME.name())) {
                 displayName = BukkitTabList.PlayerInfoData_DisplayName.get(nmsData);
                 IChatBaseComponent newDisplayName = TAB.getInstance().getFeatureManager().onDisplayNameChange(receiver, id);
-                if (newDisplayName != null) displayName = ((BukkitTabPlayer)receiver).getPlatform().toComponent(newDisplayName, receiver.getVersion());
-                if (!BukkitReflection.is1_19_3Plus()) BukkitTabList.PlayerInfoData_DisplayName.set(nmsData, displayName);
+                if (newDisplayName != null) displayName = ((BukkitTabPlayer)receiver).getTabList().toComponent(newDisplayName);
             }
-            if (actions.contains(TabList.Action.UPDATE_LATENCY.name()) || actions.contains(TabList.Action.ADD_PLAYER.name())) {
-                latency = BukkitTabList.PlayerInfoData_Latency.getInt(nmsData);
-                latency = TAB.getInstance().getFeatureManager().onLatencyChange(receiver, id, latency);
-                if (!BukkitReflection.is1_19_3Plus()) BukkitTabList.PlayerInfoData_Latency.set(nmsData, latency);
+            if (actions.contains(TabList.Action.UPDATE_LATENCY.name())) {
+                latency = TAB.getInstance().getFeatureManager().onLatencyChange(receiver, id, BukkitTabList.PlayerInfoData_Latency.getInt(nmsData));
             }
             if (actions.contains(TabList.Action.ADD_PLAYER.name())) {
                 TAB.getInstance().getFeatureManager().onEntryAdd(receiver, id, profile.getName());
             }
-            if (BukkitReflection.is1_19_3Plus()) {
-                // 1.19.3 is using records, which do not allow changing final fields, need to rewrite the list entirely
-                updatedList.add(BukkitTabList.newPlayerInfoData.newInstance(
-                        id,
-                        profile,
-                        BukkitTabList.PlayerInfoData_Listed.getBoolean(nmsData),
-                        latency,
-                        BukkitTabList.PlayerInfoData_GameMode.get(nmsData),
-                        displayName,
-                        BukkitTabList.PlayerInfoData_RemoteChatSession.get(nmsData)));
-            }
+            // 1.19.3 is using records, which do not allow changing final fields, need to rewrite the list entirely
+            updatedList.add(BukkitTabList.newPlayerInfoData.newInstance(
+                    id,
+                    profile,
+                    BukkitTabList.PlayerInfoData_Listed.getBoolean(nmsData),
+                    latency,
+                    BukkitTabList.PlayerInfoData_GameMode.get(nmsData),
+                    displayName,
+                    BukkitTabList.PlayerInfoData_RemoteChatSession.get(nmsData)));
         }
-        if (BukkitReflection.is1_19_3Plus()) {
-            BukkitTabList.PLAYERS.set(packet, updatedList);
+        BukkitTabList.PLAYERS.set(packet, updatedList);
+    }
+
+    @SneakyThrows
+    private void onPlayerInfo1_19_2(@NotNull TabPlayer receiver, @NotNull Object packet) {
+        String action = BukkitTabList.ACTION.get(packet).toString();
+        for (Object nmsData : (List<?>) BukkitTabList.PLAYERS.get(packet)) {
+            GameProfile profile = (GameProfile) BukkitTabList.PlayerInfoData_Profile.get(nmsData);
+            UUID id = profile.getId();
+            if (action.equals(TabList.Action.UPDATE_DISPLAY_NAME.name()) || action.equals(TabList.Action.ADD_PLAYER.name())) {
+                Object displayName = BukkitTabList.PlayerInfoData_DisplayName.get(nmsData);
+                IChatBaseComponent newDisplayName = TAB.getInstance().getFeatureManager().onDisplayNameChange(receiver, id);
+                if (newDisplayName != null) displayName = ((BukkitTabPlayer)receiver).getTabList().toComponent(newDisplayName);
+                BukkitTabList.PlayerInfoData_DisplayName.set(nmsData, displayName);
+            }
+            if (action.equals(TabList.Action.UPDATE_LATENCY.name()) || action.equals(TabList.Action.ADD_PLAYER.name())) {
+                int latency = TAB.getInstance().getFeatureManager().onLatencyChange(receiver, id, BukkitTabList.PlayerInfoData_Latency.getInt(nmsData));
+                BukkitTabList.PlayerInfoData_Latency.set(nmsData, latency);
+            }
+            if (action.equals(TabList.Action.ADD_PLAYER.name())) {
+                TAB.getInstance().getFeatureManager().onEntryAdd(receiver, id, profile.getName());
+            }
         }
     }
 
@@ -148,11 +196,12 @@ public class BukkitPipelineInjector extends NettyPipelineInjector {
     @Override
     @SneakyThrows
     public void modifyPlayers(@NotNull Object packetPlayOutScoreboardTeam) {
+        if (!PacketScoreboard.isAvailable()) return;
         if (TAB.getInstance().getNameTagManager() == null) return;
-        int action = PacketScoreboard.TeamPacket_ACTION.getInt(packetPlayOutScoreboardTeam);
+        int action = PacketScoreboard.teamPacketData.TeamPacket_ACTION.getInt(packetPlayOutScoreboardTeam);
         if (action == 1 || action == 2 || action == 4) return;
-        Collection<String> players = (Collection<String>) PacketScoreboard.TeamPacket_PLAYERS.get(packetPlayOutScoreboardTeam);
-        String teamName = (String) PacketScoreboard.TeamPacket_NAME.get(packetPlayOutScoreboardTeam);
+        Collection<String> players = (Collection<String>) PacketScoreboard.teamPacketData.TeamPacket_PLAYERS.get(packetPlayOutScoreboardTeam);
+        String teamName = (String) PacketScoreboard.teamPacketData.TeamPacket_NAME.get(packetPlayOutScoreboardTeam);
         if (players == null) return;
         //creating a new list to prevent NoSuchFieldException in minecraft packet encoder when a player is removed
         Collection<String> newList = new ArrayList<>();
@@ -175,6 +224,6 @@ public class BukkitPipelineInjector extends NettyPipelineInjector {
                 newList.add(entry);
             }
         }
-        PacketScoreboard.TeamPacket_PLAYERS.set(packetPlayOutScoreboardTeam, newList);
+        PacketScoreboard.teamPacketData.TeamPacket_PLAYERS.set(packetPlayOutScoreboardTeam, newList);
     }
 }

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/BukkitTAB.java

@@ -1,6 +1,6 @@
 package me.neznamy.tab.platforms.bukkit;
 
-import me.neznamy.tab.platforms.bukkit.nms.NMSStorage;
+import me.neznamy.tab.platforms.bukkit.nms.*;
 import me.neznamy.tab.platforms.bukkit.platform.BukkitPlatform;
 import me.neznamy.tab.platforms.bukkit.platform.FoliaPlatform;
 import me.neznamy.tab.shared.ProtocolVersion;
@@ -40,13 +40,15 @@ public class BukkitTAB extends JavaPlugin {
      */
     private boolean isVersionSupported() {
         try {
-            NMSStorage.setInstance(new NMSStorage());
+            DataWatcher.load();
+            PacketEntityView.load();
+            BukkitTabList.load();
             return true;
         } catch (Exception ex) {
             if (ProtocolVersion.fromFriendlyName(Bukkit.getBukkitVersion().split("-")[0]) == ProtocolVersion.UNKNOWN_SERVER_VERSION) {
                 Bukkit.getConsoleSender().sendMessage(String.format(
                         "%s[TAB] Your server version is not compatible. This plugin version was made for %s - %s. Disabling.",
-                        EnumChatFormat.RED.getFormat(), ProtocolVersion.V1_5, ProtocolVersion.LATEST_KNOWN_VERSION
+                        EnumChatFormat.RED.getFormat(), ProtocolVersion.V1_5.getFriendlyName(), ProtocolVersion.LATEST_KNOWN_VERSION.getFriendlyName()
                 ));
             } else {
                 Bukkit.getConsoleSender().sendMessage(EnumChatFormat.RED.getFormat() + "[TAB] A compatibility issue " +

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/BukkitTabList.java

@@ -2,21 +2,24 @@ package me.neznamy.tab.platforms.bukkit;
 
 import com.mojang.authlib.GameProfile;
 import com.mojang.authlib.properties.Property;
-import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 import lombok.SneakyThrows;
 import me.neznamy.tab.platforms.bukkit.header.HeaderFooter;
 import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
+import me.neznamy.tab.shared.chat.EnumChatFormat;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
 import me.neznamy.tab.shared.platform.TabList;
 import me.neznamy.tab.shared.platform.TabList.Entry.Builder;
+import me.neznamy.tab.shared.util.ComponentCache;
 import me.neznamy.tab.shared.util.ReflectionUtils;
+import org.bukkit.Bukkit;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.lang.reflect.Array;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
+import java.lang.reflect.Method;
 import java.util.*;
 
 /**
@@ -33,15 +36,12 @@ import java.util.*;
 @SuppressWarnings({"unchecked", "rawtypes"})
 public class BukkitTabList implements TabList {
 
-    // NMS Fields
-
     public static Class<?> PlayerInfoClass;
     private static Constructor<?> newPlayerInfo;
     public static Field ACTION;
     public static Field PLAYERS;
     private static Class<Enum> ActionClass;
     public static Class<?> ClientboundPlayerInfoRemovePacket;
-    private static Class<?> RemoteChatSession$Data;
     private static Constructor<?> newClientboundPlayerInfoRemovePacket;
     private static Class<?> EntityPlayer;
 
@@ -56,57 +56,45 @@ public class BukkitTabList implements TabList {
 
     private static Object[] gameModes;
 
-    @Getter
-    private static boolean available;
+    @Nullable
+    private static SkinData skinData;
+
+    private static Method ChatSerializer_DESERIALIZE;
+    private static final ComponentCache<IChatBaseComponent, Object> componentCache = new ComponentCache<>(1000,
+            (component, clientVersion) -> ChatSerializer_DESERIALIZE.invoke(null, component.toString(clientVersion)));
 
     /** Player this TabList belongs to */
     private final BukkitTabPlayer player;
 
     public static void load() throws NoSuchMethodException, ClassNotFoundException {
-        if (BukkitReflection.getMinorVersion() < 8) return; // Not supported (yet?)
+        if (BukkitReflection.getMinorVersion() < 8) return; // Not supported
 
-        // Classes
-        Class<?> playerInfoDataClass;
-        Class<?> IChatBaseComponent;
-        Class<Enum> EnumGamemodeClass;
-        if (BukkitReflection.isMojangMapped()) {
-            IChatBaseComponent = Class.forName("net.minecraft.network.chat.Component");
-            EntityPlayer = Class.forName("net.minecraft.server.level.ServerPlayer");
-            EnumGamemodeClass = (Class<Enum>) Class.forName("net.minecraft.world.level.GameType");
-            if (BukkitReflection.is1_19_3Plus()) {
-                ClientboundPlayerInfoRemovePacket = Class.forName("net.minecraft.network.protocol.game.ClientboundPlayerInfoRemovePacket");
-                PlayerInfoClass = Class.forName("net.minecraft.network.protocol.game.ClientboundPlayerInfoUpdatePacket");
-                ActionClass = (Class<Enum>) Class.forName("net.minecraft.network.protocol.game.ClientboundPlayerInfoUpdatePacket$Action");
-                playerInfoDataClass = Class.forName("net.minecraft.network.protocol.game.ClientboundPlayerInfoUpdatePacket$Entry");
-                RemoteChatSession$Data = Class.forName("net.minecraft.network.chat.RemoteChatSession$Data");
-            } else {
-                PlayerInfoClass = Class.forName("net.minecraft.network.protocol.game.ClientboundPlayerInfoPacket");
-                ActionClass = (Class<Enum>) Class.forName("net.minecraft.network.protocol.game.ClientboundPlayerInfoPacket$Action");
-                playerInfoDataClass = Class.forName("net.minecraft.network.protocol.game.ClientboundPlayerInfoPacket$PlayerUpdate");
-            }
-        } else if (BukkitReflection.getMinorVersion() >= 17) {
-            IChatBaseComponent = Class.forName("net.minecraft.network.chat.IChatBaseComponent");
-            EntityPlayer = Class.forName("net.minecraft.server.level.EntityPlayer");
-            EnumGamemodeClass = (Class<Enum>) Class.forName("net.minecraft.world.level.EnumGamemode");
-            if (BukkitReflection.is1_19_3Plus()) {
-                ClientboundPlayerInfoRemovePacket = Class.forName("net.minecraft.network.protocol.game.ClientboundPlayerInfoRemovePacket");
-                PlayerInfoClass = Class.forName("net.minecraft.network.protocol.game.ClientboundPlayerInfoUpdatePacket");
-                ActionClass = (Class<Enum>) Class.forName("net.minecraft.network.protocol.game.ClientboundPlayerInfoUpdatePacket$a");
-                playerInfoDataClass = Class.forName("net.minecraft.network.protocol.game.ClientboundPlayerInfoUpdatePacket$b");
-                RemoteChatSession$Data = Class.forName("net.minecraft.network.chat.RemoteChatSession$a");
-            } else {
-                PlayerInfoClass = Class.forName("net.minecraft.network.protocol.game.PacketPlayOutPlayerInfo");
-                ActionClass = (Class<Enum>) Class.forName("net.minecraft.network.protocol.game.PacketPlayOutPlayerInfo$EnumPlayerInfoAction");
-                playerInfoDataClass = Class.forName("net.minecraft.network.protocol.game.PacketPlayOutPlayerInfo$PlayerInfoData");
-            }
-        } else {
-            IChatBaseComponent = BukkitReflection.getLegacyClass("IChatBaseComponent");
-            EntityPlayer = BukkitReflection.getLegacyClass("EntityPlayer");
-            PlayerInfoClass = BukkitReflection.getLegacyClass("PacketPlayOutPlayerInfo");
-            ActionClass = (Class<Enum>) BukkitReflection.getLegacyClass("PacketPlayOutPlayerInfo$EnumPlayerInfoAction", "EnumPlayerInfoAction");
-            playerInfoDataClass = BukkitReflection.getLegacyClass("PacketPlayOutPlayerInfo$PlayerInfoData", "PlayerInfoData");
-            EnumGamemodeClass = (Class<Enum>) BukkitReflection.getLegacyClass("EnumGamemode", "WorldSettings$EnumGamemode");
-        }
+        Class<?> ChatSerializer = BukkitReflection.getClass("network.chat.Component$Serializer",
+                "network.chat.IChatBaseComponent$ChatSerializer", "IChatBaseComponent$ChatSerializer", "ChatSerializer");
+        ChatSerializer_DESERIALIZE = ReflectionUtils.getMethods(ChatSerializer, Object.class, String.class).get(0);
+        Class<?> IChatBaseComponent = BukkitReflection.getClass("network.chat.Component", "network.chat.IChatBaseComponent", "IChatBaseComponent");
+        Class<Enum> EnumGamemodeClass = (Class<Enum>) BukkitReflection.getClass("world.level.GameType",
+                "world.level.EnumGamemode", "EnumGamemode", "WorldSettings$EnumGamemode");
+        EntityPlayer = BukkitReflection.getClass("server.level.ServerPlayer", "server.level.EntityPlayer", "EntityPlayer");
+        ActionClass = (Class<Enum>) BukkitReflection.getClass(
+                "network.protocol.game.ClientboundPlayerInfoUpdatePacket$Action", // Mojang 1.19.3+
+                "network.protocol.game.ClientboundPlayerInfoPacket$Action", // Mojang 1.17 - 1.19.2
+                "network.protocol.game.ClientboundPlayerInfoUpdatePacket$a", // Bukkit 1.19.3+
+                "network.protocol.game.PacketPlayOutPlayerInfo$EnumPlayerInfoAction", // Bukkit 1.17 - 1.19.2
+                "PacketPlayOutPlayerInfo$EnumPlayerInfoAction", // Bukkit 1.8.1 - 1.16.5
+                "EnumPlayerInfoAction" // Bukkit 1.8.0
+        );
+        PlayerInfoClass = BukkitReflection.getClass("network.protocol.game.ClientboundPlayerInfoUpdatePacket",
+                "network.protocol.game.ClientboundPlayerInfoPacket",
+                "network.protocol.game.PacketPlayOutPlayerInfo", "PacketPlayOutPlayerInfo");
+        Class<?> playerInfoDataClass = BukkitReflection.getClass(
+                "network.protocol.game.ClientboundPlayerInfoUpdatePacket$Entry", // Mojang 1.19.3
+                "network.protocol.game.ClientboundPlayerInfoPacket$PlayerUpdate", // Mojang 1.17 - 1.19.2
+                "network.protocol.game.ClientboundPlayerInfoUpdatePacket$b", // Bukkit 1.19.3+
+                "network.protocol.game.PacketPlayOutPlayerInfo$PlayerInfoData", // Bukkit 1.17 - 1.19.2
+                "PacketPlayOutPlayerInfo$PlayerInfoData", // Bukkit 1.8.1 - 1.16.5
+                "PlayerInfoData" // Bukkit 1.8.0
+        );
 
         PLAYERS = ReflectionUtils.getOnlyField(PlayerInfoClass, List.class);
         newPlayerInfoData = playerInfoDataClass.getConstructors()[0]; // #1105, a specific 1.8.8 fork has 2 constructors
@@ -115,6 +103,8 @@ public class BukkitTabList implements TabList {
         PlayerInfoData_GameMode = ReflectionUtils.getOnlyField(playerInfoDataClass, EnumGamemodeClass);
         PlayerInfoData_DisplayName = ReflectionUtils.getOnlyField(playerInfoDataClass, IChatBaseComponent);
         if (BukkitReflection.is1_19_3Plus()) {
+            ClientboundPlayerInfoRemovePacket = BukkitReflection.getClass("network.protocol.game.ClientboundPlayerInfoRemovePacket");
+            Class<?> RemoteChatSession$Data = BukkitReflection.getClass("network.chat.RemoteChatSession$Data", "network.chat.RemoteChatSession$a");
             newClientboundPlayerInfoRemovePacket = ClientboundPlayerInfoRemovePacket.getConstructor(List.class);
             newPlayerInfo = PlayerInfoClass.getConstructor(EnumSet.class, Collection.class);
             ACTION = ReflectionUtils.getOnlyField(PlayerInfoClass, EnumSet.class);
@@ -131,13 +121,21 @@ public class BukkitTabList implements TabList {
                 Enum.valueOf(EnumGamemodeClass, "ADVENTURE"),
                 Enum.valueOf(EnumGamemodeClass, "SPECTATOR")
         };
-        available = true;
+
+        try {
+            skinData = new SkinData();
+        } catch (Exception e) {
+            Bukkit.getConsoleSender().sendMessage(EnumChatFormat.RED.getFormat() + "[TAB] Failed to initialize NMS fields for " +
+                    "getting player's game profile due to a compatibility error. This will " +
+                    "result in player skins not properly working in layout feature. " +
+                    "Please update the plugin a to version with native support for your server version for optimal experience.");
+        }
     }
 
     @Override
     @SneakyThrows
     public void removeEntry(@NotNull UUID entry) {
-        if (!available) return;
+        if (PlayerInfoClass == null) return;
         if (ClientboundPlayerInfoRemovePacket != null) {
             //1.19.3+
             player.sendPacket(newClientboundPlayerInfoRemovePacket.newInstance(Collections.singletonList(entry)));
@@ -149,25 +147,25 @@ public class BukkitTabList implements TabList {
 
     @Override
     public void updateDisplayName(@NotNull UUID entry, @Nullable IChatBaseComponent displayName) {
-        if (!available) return;
+        if (PlayerInfoClass == null) return;
         player.sendPacket(createPacket(Action.UPDATE_DISPLAY_NAME, new Builder(entry).displayName(displayName).build()));
     }
 
     @Override
     public void updateLatency(@NotNull UUID entry, int latency) {
-        if (!available) return;
+        if (PlayerInfoClass == null) return;
         player.sendPacket(createPacket(Action.UPDATE_LATENCY, new Builder(entry).latency(latency).build()));
     }
 
     @Override
     public void updateGameMode(@NotNull UUID entry, int gameMode) {
-        if (!available) return;
+        if (PlayerInfoClass == null) return;
         player.sendPacket(createPacket(Action.UPDATE_GAME_MODE, new Builder(entry).gameMode(gameMode).build()));
     }
 
     @Override
     public void addEntry(@NotNull Entry entry) {
-        if (!available) return;
+        if (PlayerInfoClass == null) return;
         player.sendPacket(createPacket(Action.ADD_PLAYER, entry));
     }
 
@@ -216,8 +214,8 @@ public class BukkitTabList implements TabList {
         return packet;
     }
 
-    private Object toComponent(IChatBaseComponent component) {
-        return player.getPlatform().toComponent(component, player.getVersion());
+    public Object toComponent(IChatBaseComponent component) {
+        return componentCache.get(component, player.getVersion());
     }
 
     @NotNull
@@ -229,4 +227,43 @@ public class BukkitTabList implements TabList {
         }
         return profile;
     }
+
+    @Nullable
+    public Skin getSkin() {
+        if (skinData == null) return null;
+        return skinData.getSkin(player);
+    }
+
+    private static class SkinData {
+
+        private final Method getHandle;
+        private final Method getProfile;
+
+        @SneakyThrows
+        public SkinData() {
+            Class<?> EntityHuman = BukkitReflection.getClass("world.entity.player.Player", "world.entity.player.EntityHuman", "EntityHuman");
+            getHandle = Class.forName("org.bukkit.craftbukkit." + BukkitReflection.getServerPackage() + ".entity.CraftPlayer").getMethod("getHandle");
+            // There is only supposed to be one, however there are exceptions:
+            // #1 - CatServer adds another method
+            // #2 - Random mods may perform deep hack into the server and add another one (see #1089)
+            // Get first and hope for the best, alternatively players may not have correct skins in layout, but who cares
+            getProfile = ReflectionUtils.getMethods(EntityHuman, GameProfile.class).get(0);
+        }
+
+        @Nullable
+        @SneakyThrows
+        public Skin getSkin(@NotNull BukkitTabPlayer player) {
+            Collection<Property> col = ((GameProfile) getProfile.invoke(getHandle.invoke(player.getPlayer()))).getProperties().get(TEXTURES_PROPERTY);
+            if (col.isEmpty()) return null; //offline mode
+            Property property = col.iterator().next();
+            if (BukkitReflection.is1_20_2Plus()) {
+                return new Skin(
+                        (String) property.getClass().getMethod("value").invoke(property),
+                        (String) property.getClass().getMethod("signature").invoke(property)
+                );
+            } else {
+                return new Skin(property.getValue(), property.getSignature());
+            }
+        }
+    }
 }

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/BukkitTabPlayer.java

@@ -1,33 +1,31 @@
 package me.neznamy.tab.platforms.bukkit;
 
-import com.mojang.authlib.GameProfile;
-import com.mojang.authlib.properties.Property;
 import lombok.Getter;
 import lombok.SneakyThrows;
 import me.neznamy.tab.platforms.bukkit.hook.LibsDisguisesHook;
 import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
 import me.neznamy.tab.platforms.bukkit.nms.PacketEntityView;
+import me.neznamy.tab.platforms.bukkit.nms.PacketSender;
+import me.neznamy.tab.platforms.bukkit.nms.PingRetriever;
 import me.neznamy.tab.platforms.bukkit.platform.BukkitPlatform;
-import me.neznamy.tab.platforms.bukkit.scoreboard.PacketScoreboard;
+import me.neznamy.tab.platforms.bukkit.scoreboard.ScoreboardLoader;
 import me.neznamy.tab.shared.backend.entityview.EntityView;
-import me.neznamy.tab.shared.platform.bossbar.BossBar;
+import me.neznamy.tab.shared.platform.BossBar;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
 import me.neznamy.tab.shared.platform.TabList;
 import me.neznamy.tab.platforms.bukkit.bossbar.EntityBossBar;
 import me.neznamy.tab.platforms.bukkit.bossbar.BukkitBossBar;
 import me.neznamy.tab.platforms.bukkit.bossbar.ViaBossBar;
-import me.neznamy.tab.platforms.bukkit.nms.NMSStorage;
 import me.neznamy.tab.shared.platform.Scoreboard;
-import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.backend.BackendTabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.md_5.bungee.chat.ComponentSerializer;
 import org.bukkit.entity.Player;
 import org.bukkit.metadata.MetadataValue;
 import org.bukkit.potion.PotionEffectType;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
-import java.util.Collection;
-
 /**
  * TabPlayer implementation for Bukkit platform
  */
@@ -35,23 +33,17 @@ import java.util.Collection;
 @Getter
 public class BukkitTabPlayer extends BackendTabPlayer {
 
-    /** Player's NMS handle (EntityPlayer), preloading for speed */
-    @NotNull
-    private final Object handle;
-
-    /** Player's connection for sending packets, preloading for speed */
-    @NotNull
-    private final Object playerConnection;
+    private static final boolean spigot = ReflectionUtils.classExists("org.bukkit.entity.Player$Spigot");
 
     @NotNull
-    private final Scoreboard<BukkitTabPlayer> scoreboard = new PacketScoreboard(this);
+    private final Scoreboard<BukkitTabPlayer> scoreboard = ScoreboardLoader.getInstance().apply(this);
 
     @NotNull
-    private final TabList tabList = new BukkitTabList(this);
+    private final BukkitTabList tabList = new BukkitTabList(this);
 
     @NotNull
-    private final BossBar bossBar = TAB.getInstance().getServerVersion().getMinorVersion() >= 9 ?
-            new BukkitBossBar(this) : getVersion().getMinorVersion() >= 9 ? new ViaBossBar(this) : new EntityBossBar(this);
+    private final BossBar bossBar = BukkitReflection.getMinorVersion() >= 9 ? new BukkitBossBar(this) :
+            getVersion().getMinorVersion() >= 9 ? new ViaBossBar(this) : new EntityBossBar(this);
 
     @NotNull
     private final EntityView entityView = new PacketEntityView(this);
@@ -64,11 +56,8 @@ public class BukkitTabPlayer extends BackendTabPlayer {
      * @param   p
      *          bukkit player
      */
-    @SneakyThrows
     public BukkitTabPlayer(@NotNull BukkitPlatform platform, @NotNull Player p) {
         super(platform, p, p.getUniqueId(), p.getName(), p.getWorld().getName());
-        handle = NMSStorage.getInstance().getHandle.invoke(player);
-        playerConnection = NMSStorage.getInstance().PLAYER_CONNECTION.get(handle);
     }
 
     @Override
@@ -79,21 +68,21 @@ public class BukkitTabPlayer extends BackendTabPlayer {
     @Override
     @SneakyThrows
     public int getPing() {
-        if (BukkitReflection.getMinorVersion() >= 17) {
-            return getPlayer().getPing();
-        }
-        return NMSStorage.getInstance().PING.getInt(handle);
+        return PingRetriever.getPing(getPlayer());
     }
 
     @SneakyThrows
     public void sendPacket(@NotNull Object nmsPacket) {
-        if (!getPlayer().isOnline()) return;
-        NMSStorage.getInstance().sendPacket.invoke(playerConnection, nmsPacket);
+        PacketSender.sendPacket(getPlayer(), nmsPacket);
     }
 
     @Override
     public void sendMessage(@NotNull IChatBaseComponent message) {
-        getPlayer().sendMessage(BukkitUtils.toBukkitFormat(message, getVersion().getMinorVersion() >= 16));
+        if (spigot) {
+            getPlayer().spigot().sendMessage(ComponentSerializer.parse(message.toString(getVersion())));
+        } else {
+            getPlayer().sendMessage(BukkitUtils.toBukkitFormat(message, getVersion().getMinorVersion() >= 16));
+        }
     }
 
     @Override
@@ -107,20 +96,9 @@ public class BukkitTabPlayer extends BackendTabPlayer {
     }
 
     @Override
-    @SneakyThrows
     @Nullable
     public TabList.Skin getSkin() {
-        Collection<Property> col = ((GameProfile)NMSStorage.getInstance().getProfile.invoke(handle)).getProperties().get(TabList.TEXTURES_PROPERTY);
-        if (col.isEmpty()) return null; //offline mode
-        Property property = col.iterator().next();
-        if (BukkitReflection.is1_20_2Plus()) {
-            return new TabList.Skin(
-                    (String) property.getClass().getMethod("value").invoke(property),
-                    (String) property.getClass().getMethod("signature").invoke(property)
-            );
-        } else {
-            return new TabList.Skin(property.getValue(), property.getSignature());
-        }
+        return tabList.getSkin();
     }
 
     @Override

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/bossbar/BukkitBossBar.java

@@ -5,7 +5,7 @@ import me.neznamy.tab.api.bossbar.BarColor;
 import me.neznamy.tab.api.bossbar.BarStyle;
 import me.neznamy.tab.platforms.bukkit.BukkitUtils;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
-import me.neznamy.tab.shared.platform.bossbar.BossBar;
+import me.neznamy.tab.shared.platform.BossBar;
 import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
 import org.bukkit.Bukkit;
 import org.jetbrains.annotations.NotNull;
@@ -21,25 +21,8 @@ import java.util.UUID;
 @RequiredArgsConstructor
 public class BukkitBossBar implements BossBar {
 
-    /** Color array for fast access */
-    private static final org.bukkit.boss.BarColor[] colors = new org.bukkit.boss.BarColor[] {
-            org.bukkit.boss.BarColor.PINK,
-            org.bukkit.boss.BarColor.BLUE,
-            org.bukkit.boss.BarColor.RED,
-            org.bukkit.boss.BarColor.GREEN,
-            org.bukkit.boss.BarColor.YELLOW,
-            org.bukkit.boss.BarColor.PURPLE,
-            org.bukkit.boss.BarColor.WHITE
-    };
-
     /** Style array for fast access */
-    private static final org.bukkit.boss.BarStyle[] styles = new org.bukkit.boss.BarStyle[] {
-            org.bukkit.boss.BarStyle.SOLID,
-            org.bukkit.boss.BarStyle.SEGMENTED_6,
-            org.bukkit.boss.BarStyle.SEGMENTED_10,
-            org.bukkit.boss.BarStyle.SEGMENTED_12,
-            org.bukkit.boss.BarStyle.SEGMENTED_20
-    };
+    private static final org.bukkit.boss.BarStyle[] styles = org.bukkit.boss.BarStyle.values();
     
     /** Player this handler belongs to */
     @NotNull
@@ -54,7 +37,7 @@ public class BukkitBossBar implements BossBar {
         if (bossBars.containsKey(id)) return;
         org.bukkit.boss.BossBar bar = Bukkit.createBossBar(
                 BukkitUtils.toBukkitFormat(IChatBaseComponent.optimizedComponent(title), player.getVersion().getMinorVersion() >= 16),
-                colors[color.ordinal()],
+                org.bukkit.boss.BarColor.valueOf(color.name()),
                 styles[style.ordinal()]
         );
         bar.setProgress(progress);
@@ -79,7 +62,7 @@ public class BukkitBossBar implements BossBar {
 
     @Override
     public void update(@NotNull UUID id, @NotNull BarColor color) {
-        bossBars.get(id).setColor(colors[color.ordinal()]);
+        bossBars.get(id).setColor(org.bukkit.boss.BarColor.valueOf(color.name()));
     }
 
     @Override

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/bossbar/EntityBossBar.java

@@ -1,7 +1,7 @@
 package me.neznamy.tab.platforms.bukkit.bossbar;
 
 import lombok.RequiredArgsConstructor;
-import me.neznamy.tab.shared.platform.bossbar.BossBar;
+import me.neznamy.tab.shared.platform.BossBar;
 import me.neznamy.tab.api.bossbar.BarColor;
 import me.neznamy.tab.api.bossbar.BarStyle;
 import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/bossbar/ViaBossBar.java

@@ -5,7 +5,7 @@ import com.viaversion.viaversion.api.legacy.bossbar.BossColor;
 import com.viaversion.viaversion.api.legacy.bossbar.BossStyle;
 import lombok.RequiredArgsConstructor;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
-import me.neznamy.tab.shared.platform.bossbar.BossBar;
+import me.neznamy.tab.shared.platform.BossBar;
 import me.neznamy.tab.api.bossbar.BarColor;
 import me.neznamy.tab.api.bossbar.BarStyle;
 import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
@@ -21,25 +21,8 @@ import java.util.UUID;
 @RequiredArgsConstructor
 public class ViaBossBar implements BossBar {
 
-    /** Color array for fast access */
-    private static final BossColor[] colors = new BossColor[] {
-            BossColor.PINK,
-            BossColor.BLUE,
-            BossColor.RED,
-            BossColor.GREEN,
-            BossColor.YELLOW,
-            BossColor.PURPLE,
-            BossColor.WHITE
-    };
-
     /** Style array for fast access */
-    private static final BossStyle[] styles = new BossStyle[] {
-            BossStyle.SOLID,
-            BossStyle.SEGMENTED_6,
-            BossStyle.SEGMENTED_10,
-            BossStyle.SEGMENTED_12,
-            BossStyle.SEGMENTED_20
-    };
+    private static final BossStyle[] styles = BossStyle.values();
     
     /** Player this handler belongs to */
     @NotNull
@@ -55,7 +38,7 @@ public class ViaBossBar implements BossBar {
         com.viaversion.viaversion.api.legacy.bossbar.BossBar bar = Via.getAPI().legacyAPI().createLegacyBossBar(
                 IChatBaseComponent.optimizedComponent(title).toString(player.getVersion()),
                 progress,
-                colors[color.ordinal()],
+                BossColor.valueOf(color.name()),
                 styles[style.ordinal()]
         );
         viaBossBars.put(id, bar);
@@ -79,7 +62,7 @@ public class ViaBossBar implements BossBar {
 
     @Override
     public void update(@NotNull UUID id, @NotNull BarColor color) {
-        viaBossBars.get(id).setColor(colors[color.ordinal()]);
+        viaBossBars.get(id).setColor(BossColor.valueOf(color.name()));
     }
 
     @Override

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/features/BukkitNameTagX.java

@@ -1,6 +1,7 @@
 package me.neznamy.tab.platforms.bukkit.features;
 
 import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
+import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
 import me.neznamy.tab.platforms.bukkit.nms.DataWatcher;
 import me.neznamy.tab.platforms.bukkit.platform.BukkitPlatform;
 import me.neznamy.tab.shared.TAB;
@@ -73,7 +74,7 @@ public class BukkitNameTagX extends BackendNameTagX implements Listener {
     @NotNull
     public List<Integer> getPassengers(@NotNull Object entity) {
         Entity vehicle = (Entity) entity;
-        if (TAB.getInstance().getServerVersion().getMinorVersion() >= 11) {
+        if (BukkitReflection.getMinorVersion() >= 11) {
             return vehicle.getPassengers().stream().map(Entity::getEntityId).collect(Collectors.toList());
         } else {
             if (vehicle.getPassenger() != null) {
@@ -109,13 +110,13 @@ public class BukkitNameTagX extends BackendNameTagX implements Listener {
     @Override
     public boolean isSwimming(@NotNull TabPlayer player) {
         Player p = (Player) player.getPlayer();
-        if (TAB.getInstance().getServerVersion().getMinorVersion() >= 14 && p.getPose() == Pose.SWIMMING) return true;
-        return TAB.getInstance().getServerVersion().getMinorVersion() == 13 && p.isSwimming();
+        if (BukkitReflection.getMinorVersion() >= 14 && p.getPose() == Pose.SWIMMING) return true;
+        return BukkitReflection.getMinorVersion() == 13 && p.isSwimming();
     }
 
     @Override
     public boolean isGliding(@NotNull TabPlayer player) {
-        return TAB.getInstance().getServerVersion().getMinorVersion() >= 9 && ((Player)player.getPlayer()).isGliding();
+        return BukkitReflection.getMinorVersion() >= 9 && ((Player)player.getPlayer()).isGliding();
     }
 
     @Override

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/features/PerWorldPlayerList.java

@@ -5,6 +5,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 
+import lombok.Getter;
 import me.neznamy.tab.platforms.bukkit.BukkitUtils;
 import me.neznamy.tab.shared.features.types.Loadable;
 import me.neznamy.tab.shared.features.types.UnLoadable;
@@ -28,6 +29,8 @@ import org.jetbrains.annotations.NotNull;
 @SuppressWarnings("deprecation")
 public class PerWorldPlayerList extends TabFeature implements Listener, Loadable, UnLoadable {
 
+    @Getter private final String featureName = "Per world PlayerList";
+
     /** Config options */
     private final boolean allowBypass = TAB.getInstance().getConfig().getBoolean("per-world-playerlist.allow-bypass-permission", false);
     private final List<String> ignoredWorlds = TAB.getInstance().getConfig().getStringList("per-world-playerlist.ignore-effect-in-worlds", Arrays.asList("ignored_world", "build"));
@@ -113,10 +116,4 @@ public class PerWorldPlayerList extends TabFeature implements Listener, Loadable
         }
         return viewerWorldGroup.equals(targetWorldGroup);
     }
-
-    @Override
-    @NotNull
-    public String getFeatureName() {
-        return "Per world PlayerList";
-    }
 }

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/header/HeaderFooter.java

@@ -2,7 +2,7 @@ package me.neznamy.tab.platforms.bukkit.header;
 
 import lombok.Getter;
 import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
-import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
+import me.neznamy.tab.platforms.bukkit.nms.PacketSender;
 import me.neznamy.tab.shared.chat.EnumChatFormat;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
 import org.bukkit.Bukkit;
@@ -25,7 +25,7 @@ public abstract class HeaderFooter {
     public static void findInstance() {
         if (PaperHeaderFooter.isAvailable()) {
             instance = new PaperHeaderFooter();
-        } else if (PacketHeaderFooter.isAvailable()) {
+        } else if (PacketHeaderFooter.isAvailable() && PacketSender.isAvailable()) {
             instance = new PacketHeaderFooter();
         } else if (BukkitHeaderFooter.isAvailable()) {
             instance = new BukkitHeaderFooter();
@@ -33,7 +33,7 @@ public abstract class HeaderFooter {
                     "sending Header/Footer due to a compatibility error. Using fallback solution using Bukkit API. " +
                     "This will drastically drop performance, as well as miss support for fonts (added in 1.16). " +
                     "Please update the plugin to version with proper support for your server version.");
-        } else if (BukkitReflection.getMinorVersion() >= 8) {
+        } else {
             Bukkit.getConsoleSender().sendMessage(EnumChatFormat.RED.getFormat() + "[TAB] Failed to initialize NMS fields for " +
                     "sending Header/Footer due to a compatibility error. No fallback solution was found either. This will " +
                     "result in the feature not working. " +

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/header/PacketHeaderFooter.java

@@ -5,11 +5,14 @@ import lombok.SneakyThrows;
 import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
 import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ComponentCache;
 import me.neznamy.tab.shared.util.ReflectionUtils;
 import org.jetbrains.annotations.NotNull;
 
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
+import java.lang.reflect.Method;
 
 /**
  * Header/footer sender that uses NMS to send packets. Available
@@ -20,6 +23,9 @@ public class PacketHeaderFooter extends HeaderFooter {
     private static Constructor<?> newHeaderFooter;
     private static Field HEADER;
     private static Field FOOTER;
+    private static Method ChatSerializer_DESERIALIZE;
+    private static final ComponentCache<IChatBaseComponent, Object> componentCache = new ComponentCache<>(1000,
+            (component, clientVersion) -> ChatSerializer_DESERIALIZE.invoke(null, component.toString(clientVersion)));
 
     @Getter
     private static boolean available;
@@ -27,18 +33,13 @@ public class PacketHeaderFooter extends HeaderFooter {
     static {
         try {
             if (BukkitReflection.getMinorVersion() >= 8) {
-                Class<?> IChatBaseComponent;
-                Class<?> HeaderFooterClass;
-                if (BukkitReflection.isMojangMapped()) {
-                    IChatBaseComponent = Class.forName("net.minecraft.network.chat.Component");
-                    HeaderFooterClass = Class.forName("net.minecraft.network.protocol.game.ClientboundTabListPacket");
-                } else if (BukkitReflection.getMinorVersion() >= 17) {
-                    IChatBaseComponent = Class.forName("net.minecraft.network.chat.IChatBaseComponent");
-                    HeaderFooterClass = Class.forName("net.minecraft.network.protocol.game.PacketPlayOutPlayerListHeaderFooter");
-                } else {
-                    IChatBaseComponent = BukkitReflection.getLegacyClass("IChatBaseComponent");
-                    HeaderFooterClass = BukkitReflection.getLegacyClass("PacketPlayOutPlayerListHeaderFooter");
-                }
+                Class<?> IChatBaseComponent = BukkitReflection.getClass("network.chat.Component",
+                        "network.chat.IChatBaseComponent", "IChatBaseComponent");
+                Class<?> HeaderFooterClass = BukkitReflection.getClass("network.protocol.game.ClientboundTabListPacket",
+                        "network.protocol.game.PacketPlayOutPlayerListHeaderFooter", "PacketPlayOutPlayerListHeaderFooter");
+                Class<?> ChatSerializer = BukkitReflection.getClass("network.chat.Component$Serializer",
+                        "network.chat.IChatBaseComponent$ChatSerializer", "IChatBaseComponent$ChatSerializer", "ChatSerializer");
+                ChatSerializer_DESERIALIZE = ReflectionUtils.getMethods(ChatSerializer, Object.class, String.class).get(0);
                 if (BukkitReflection.getMinorVersion() >= 17) {
                     newHeaderFooter = HeaderFooterClass.getConstructor(IChatBaseComponent, IChatBaseComponent);
                 } else {
@@ -56,15 +57,17 @@ public class PacketHeaderFooter extends HeaderFooter {
     @SneakyThrows
     @Override
     public void set(@NotNull BukkitTabPlayer player, @NotNull IChatBaseComponent header, @NotNull IChatBaseComponent footer) {
-        Object headerComponent = player.getPlatform().toComponent(header, player.getVersion());
-        Object footerComponent = player.getPlatform().toComponent(footer, player.getVersion());
         if (BukkitReflection.getMinorVersion() >= 17) {
-            player.sendPacket(newHeaderFooter.newInstance(headerComponent, footerComponent));
+            player.sendPacket(newHeaderFooter.newInstance(convert(header, player), convert(footer, player)));
         } else {
             Object packet = newHeaderFooter.newInstance();
-            HEADER.set(packet, headerComponent);
-            FOOTER.set(packet, footerComponent);
+            HEADER.set(packet, convert(header, player));
+            FOOTER.set(packet, convert(footer, player));
             player.sendPacket(packet);
         }
     }
+
+    private Object convert(IChatBaseComponent component, TabPlayer player) {
+        return componentCache.get(component, player.getVersion());
+    }
 }

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/header/PaperHeaderFooter.java

@@ -11,10 +11,9 @@ import org.jetbrains.annotations.NotNull;
 
 /**
  * Header/footer sender using Paper's API added in 1.16.5.
- * Due to lack of component cache for adventure components in TAB,
- * there is a performance loss compared to using NMS. However, we do not
- * need to serialize/deserialize anything ourselves thanks to direct component
- * conversion, so in the end it is roughly the same.
+ * Thanks to both cache and direct component conversion, this
+ * implementation is even faster than using NMS components
+ * and is therefore preferred if available.
  */
 public class PaperHeaderFooter extends HeaderFooter {
 

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/nms/BukkitReflection.java

@@ -17,10 +17,6 @@ public class BukkitReflection {
     @Getter
     private static final int minorVersion = Integer.parseInt(serverPackage.split("_")[1]);
 
-    /** Flag determining whether this server jar is mojang mapped or not */
-    @Getter
-    private static final boolean mojangMapped = checkMojangMapped();
-
     /** Flag determining whether the server version is at least 1.19.3 or not */
     @Getter
     private static final boolean is1_19_3Plus = ReflectionUtils.classExists("net.minecraft.network.protocol.game.ClientboundPlayerInfoUpdatePacket");
@@ -31,20 +27,15 @@ public class BukkitReflection {
 
     /** Flag determining whether the server version is at least 1.20.2 or not */
     @Getter
-    private static final boolean is1_20_2Plus = minorVersion >= 20 && !serverPackage.equals("v1_20_R1");
+    private static final boolean is1_20_2Plus = ReflectionUtils.classExists("net.minecraft.world.scores.DisplaySlot");
 
-    private static boolean checkMojangMapped() {
-        try {
-            Class.forName("net.minecraft.network.syncher.SynchedEntityData").getMethod("define",
-                    Class.forName("net.minecraft.network.syncher.EntityDataAccessor"), Object.class);
-            return true;
-        } catch (ReflectiveOperationException | NullPointerException ex) {
-            return false;
-        }
-    }
+    /** Flag determining whether the server version is at least 1.20.3 or not */
+    @Getter
+    private static final boolean is1_20_3Plus = ReflectionUtils.classExists("net.minecraft.network.protocol.game.ClientboundResetScorePacket");
 
     /**
-     * Returns class with given potential names in same order
+     * Returns class with given potential names in same order. For 1.17+ it takes packaged class names
+     * without "net.minecraft." prefix, for <1.17 it takes class name only.
      *
      * @param   names
      *          possible class names
@@ -52,32 +43,19 @@ public class BukkitReflection {
      * @throws  ClassNotFoundException
      *          if class does not exist
      */
-    public static Class<?> getLegacyClass(@NotNull String... names) throws ClassNotFoundException {
+    public static Class<?> getClass(@NotNull String... names) throws ClassNotFoundException {
+        ClassLoader loader = BukkitReflection.class.getClassLoader();
         for (String name : names) {
             try {
-                return getLegacyClass(name);
-            } catch (ClassNotFoundException e) {
-                //not the first class name in array
+                if (minorVersion >= 17) {
+                    return Class.forName("net.minecraft." + name);
+                } else {
+                    return loader.loadClass("net.minecraft.server." + serverPackage + "." + name);
+                }
+            } catch (ClassNotFoundException | NullPointerException ignored) {
+                // not the first class name in array
             }
         }
         throw new ClassNotFoundException("No class found with possible names " + Arrays.toString(names));
     }
-
-    /**
-     * Returns class from given name. Supports modded servers, such as Thermos.
-     *
-     * @param   name
-     *          class name
-     * @return  class from given name
-     * @throws  ClassNotFoundException
-     *          if class was not found
-     */
-    public static Class<?> getLegacyClass(@NotNull String name) throws ClassNotFoundException {
-        try {
-            return BukkitReflection.class.getClassLoader().loadClass("net.minecraft.server." + serverPackage + "." + name);
-        } catch (NullPointerException e) {
-            // nested class not found
-            throw new ClassNotFoundException(name);
-        }
-    }
 }

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/nms/DataWatcher.java

@@ -1,11 +1,10 @@
 package me.neznamy.tab.platforms.bukkit.nms;
 
 import lombok.*;
-import me.neznamy.tab.platforms.bukkit.platform.BukkitPlatform;
 import me.neznamy.tab.shared.ProtocolVersion;
-import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.backend.EntityData;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.util.ComponentCache;
 import me.neznamy.tab.shared.util.ReflectionUtils;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -32,8 +31,6 @@ public class DataWatcher implements EntityData {
     private static Class<?> DataWatcherObject;
     private static Constructor<?> newDataWatcherObject;
 
-    private static Class<?> DataWatcherRegistry;
-    private static Class<?> DataWatcherSerializer;
     private static Object DataWatcherSerializer_BYTE;
     private static Object DataWatcherSerializer_FLOAT;
     private static Object DataWatcherSerializer_STRING;
@@ -41,7 +38,11 @@ public class DataWatcher implements EntityData {
     private static Object DataWatcherSerializer_BOOLEAN;
 
     private static final int armorStandFlagsPosition = getArmorStandFlagsPosition();
-    
+
+    private static Method ChatSerializer_DESERIALIZE;
+    private static final ComponentCache<IChatBaseComponent, Object> componentCache = new ComponentCache<>(1000,
+            (component, clientVersion) -> ChatSerializer_DESERIALIZE.invoke(null, component.toString(clientVersion)));
+
     /** Watched data */
     private final Map<Integer, Item> dataValues = new HashMap<>();
 
@@ -57,7 +58,7 @@ public class DataWatcher implements EntityData {
         } else if (BukkitReflection.getMinorVersion() >= 15) {
             //1.15.x, 1.16.x
             return 14;
-        } else if (BukkitReflection.getMinorVersion() >= 14) {
+        } else if (BukkitReflection.getMinorVersion() == 14) {
             //1.14.x
             return 13;
         } else if (BukkitReflection.getMinorVersion() >= 10) {
@@ -74,70 +75,60 @@ public class DataWatcher implements EntityData {
      */
     public static void load() throws ReflectiveOperationException {
         int minorVersion = BukkitReflection.getMinorVersion();
-        Class<?> Entity;
-        if (BukkitReflection.isMojangMapped()) {
-            Entity = Class.forName("net.minecraft.world.entity.Entity");
-            DataWatcher = Class.forName("net.minecraft.network.syncher.SynchedEntityData");
-            DataWatcherObject = Class.forName("net.minecraft.network.syncher.EntityDataAccessor");
-            DataWatcherRegistry = Class.forName("net.minecraft.network.syncher.EntityDataSerializers");
-            DataWatcherSerializer = Class.forName("net.minecraft.network.syncher.EntityDataSerializer");
-        } else if (minorVersion >= 17) {
-            Entity = Class.forName("net.minecraft.world.entity.Entity");
-            DataWatcher = Class.forName("net.minecraft.network.syncher.DataWatcher");
-            DataWatcherObject = Class.forName("net.minecraft.network.syncher.DataWatcherObject");
-            DataWatcherRegistry = Class.forName("net.minecraft.network.syncher.DataWatcherRegistry");
-            DataWatcherSerializer = Class.forName("net.minecraft.network.syncher.DataWatcherSerializer");
-        } else {
-            Entity = BukkitReflection.getLegacyClass("Entity");
-            DataWatcher = BukkitReflection.getLegacyClass("DataWatcher");
-            if (minorVersion >= 9) {
-                DataWatcherObject = BukkitReflection.getLegacyClass("DataWatcherObject");
-                DataWatcherRegistry = BukkitReflection.getLegacyClass("DataWatcherRegistry");
-                DataWatcherSerializer = BukkitReflection.getLegacyClass("DataWatcherSerializer");
-            }
-        }
+        DataWatcher = BukkitReflection.getClass("network.syncher.SynchedEntityData", "network.syncher.DataWatcher", "DataWatcher");
         if (minorVersion >= 7) {
-            newDataWatcher = DataWatcher.getConstructor(Entity);
+            Class<?> ChatSerializer = BukkitReflection.getClass("network.chat.Component$Serializer",
+                    "network.chat.IChatBaseComponent$ChatSerializer", "IChatBaseComponent$ChatSerializer", "ChatSerializer");
+            ChatSerializer_DESERIALIZE = ReflectionUtils.getMethods(ChatSerializer, Object.class, String.class).get(0);
+            newDataWatcher = DataWatcher.getConstructor(BukkitReflection.getClass("world.entity.Entity", "Entity"));
         } else {
             newDataWatcher = DataWatcher.getConstructor();
         }
         if (minorVersion >= 9) {
+            DataWatcherObject = BukkitReflection.getClass("network.syncher.EntityDataAccessor",
+                    "network.syncher.DataWatcherObject", "DataWatcherObject");
+            Class<?> dataWatcherRegistry = BukkitReflection.getClass("network.syncher.EntityDataSerializers",
+                    "network.syncher.DataWatcherRegistry", "DataWatcherRegistry");
+            Class<?> dataWatcherSerializer = BukkitReflection.getClass("network.syncher.EntityDataSerializer",
+                    "network.syncher.DataWatcherSerializer", "DataWatcherSerializer");
             DataWatcher_register = ReflectionUtils.getMethod(
                     DataWatcher,
-                    new String[]{"define", "register", "a", "m_135372_"}, // {Bukkit 1.20.2+, Bukkit, Bukkit 1.18+, Mohist 1.18.2}
+                    new String[]{"define", "register", "a", "m_135372_"}, // {Mojang, Bukkit, Bukkit 1.18+, Mohist 1.18.2}
                     DataWatcherObject, Object.class
             );
-        } else {
-            DataWatcher_register = ReflectionUtils.getMethod(DataWatcher, new String[]{"func_75682_a", "a"}, int.class, Object.class); // {Thermos 1.7.10, Bukkit}
-        }
-        if (minorVersion >= 19) {
-            DataWatcher_packDirty = ReflectionUtils.getMethod(DataWatcher, new String[] {"packDirty", "b"}); // {Mojang | 1.20.2+, 1.20.2-}
-        }
-        if (BukkitReflection.is1_19_3Plus()) {
-            DataWatcher_markDirty = ReflectionUtils.getMethods(DataWatcher, void.class, DataWatcherObject).get(0);
-        }
-        if (minorVersion >= 9) {
-            newDataWatcherObject = DataWatcherObject.getConstructor(int.class, DataWatcherSerializer);
-            DataWatcherSerializer_BYTE = ReflectionUtils.getField(DataWatcherRegistry, "BYTE", "a", "f_135027_").get(null); // Mohist 1.18.2
-            DataWatcherSerializer_FLOAT = ReflectionUtils.getField(DataWatcherRegistry, "FLOAT", "c", "f_135029_").get(null); // Mohist 1.18.2
-            DataWatcherSerializer_STRING = ReflectionUtils.getField(DataWatcherRegistry, "STRING", "d", "f_135030_").get(null); // Mohist 1.18.2
+            newDataWatcherObject = DataWatcherObject.getConstructor(int.class, dataWatcherSerializer);
+            DataWatcherSerializer_BYTE = ReflectionUtils.getField(dataWatcherRegistry, "BYTE", "a", "f_135027_").get(null); // Mohist 1.18.2
+            DataWatcherSerializer_FLOAT = ReflectionUtils.getField(dataWatcherRegistry, "FLOAT", "c", "f_135029_").get(null); // Mohist 1.18.2
+            DataWatcherSerializer_STRING = ReflectionUtils.getField(dataWatcherRegistry, "STRING", "d", "f_135030_").get(null); // Mohist 1.18.2
             if (BukkitReflection.is1_19_3Plus()) {
-                DataWatcherSerializer_OPTIONAL_COMPONENT = ReflectionUtils.getField(DataWatcherRegistry, "OPTIONAL_COMPONENT", "g").get(null);
+                DataWatcherSerializer_OPTIONAL_COMPONENT = ReflectionUtils.getField(dataWatcherRegistry, "OPTIONAL_COMPONENT", "g").get(null);
                 if (BukkitReflection.is1_19_4Plus()) {
-                    DataWatcherSerializer_BOOLEAN = ReflectionUtils.getField(DataWatcherRegistry, "BOOLEAN", "k").get(null);
+                    DataWatcherSerializer_BOOLEAN = ReflectionUtils.getField(dataWatcherRegistry, "BOOLEAN", "k").get(null);
                 } else {
-                    DataWatcherSerializer_BOOLEAN = ReflectionUtils.getField(DataWatcherRegistry, "BOOLEAN", "j").get(null);
+                    DataWatcherSerializer_BOOLEAN = ReflectionUtils.getField(dataWatcherRegistry, "BOOLEAN", "j").get(null);
                 }
             } else {
                 if (minorVersion >= 13) {
-                    DataWatcherSerializer_OPTIONAL_COMPONENT = ReflectionUtils.getField(DataWatcherRegistry,
+                    DataWatcherSerializer_OPTIONAL_COMPONENT = ReflectionUtils.getField(dataWatcherRegistry,
                             "OPTIONAL_COMPONENT", "f", "f_135032_").get(null); // Mohist 1.18.2
-                    DataWatcherSerializer_BOOLEAN = ReflectionUtils.getField(DataWatcherRegistry,
+                    DataWatcherSerializer_BOOLEAN = ReflectionUtils.getField(dataWatcherRegistry,
                             "BOOLEAN", "i", "f_135035_").get(null); // Mohist 1.18.2
                 } else {
-                    DataWatcherSerializer_BOOLEAN = DataWatcherRegistry.getDeclaredField("h").get(null);
+                    DataWatcherSerializer_BOOLEAN = dataWatcherRegistry.getDeclaredField("h").get(null);
                 }
             }
+        } else {
+            DataWatcher_register = ReflectionUtils.getMethod(
+                    DataWatcher,
+                    new String[]{"func_75682_a", "a"}, int.class, // {Thermos 1.7.10, Bukkit}
+                    Object.class
+            );
+        }
+        if (minorVersion >= 19) {
+            DataWatcher_packDirty = ReflectionUtils.getMethod(DataWatcher, new String[] {"packDirty", "b"}); // {Mojang, Bukkit}
+        }
+        if (BukkitReflection.is1_19_3Plus()) {
+            DataWatcher_markDirty = ReflectionUtils.getMethods(DataWatcher, void.class, DataWatcherObject).get(0);
         }
     }
     
@@ -176,7 +167,7 @@ public class DataWatcher implements EntityData {
     public void setCustomName(@NotNull String customName, @NotNull ProtocolVersion clientVersion) {
         if (BukkitReflection.getMinorVersion() >= 13) {
             setValue(2, DataWatcherSerializer_OPTIONAL_COMPONENT,
-                    Optional.of(((BukkitPlatform)TAB.getInstance().getPlatform()).toComponent(IChatBaseComponent.optimizedComponent(customName), clientVersion)));
+                    Optional.of(componentCache.get(IChatBaseComponent.optimizedComponent(customName), clientVersion)));
         } else if (BukkitReflection.getMinorVersion() >= 8) {
             setValue(2, DataWatcherSerializer_STRING, customName);
         } else {

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/nms/NMSStorage.java

@@ -1,123 +0,0 @@
-package me.neznamy.tab.platforms.bukkit.nms;
-
-import com.mojang.authlib.GameProfile;
-import io.netty.channel.Channel;
-import lombok.Getter;
-import lombok.Setter;
-import lombok.SneakyThrows;
-import me.neznamy.tab.platforms.bukkit.BukkitTabList;
-import me.neznamy.tab.platforms.bukkit.header.HeaderFooter;
-import me.neznamy.tab.platforms.bukkit.scoreboard.PacketScoreboard;
-import me.neznamy.tab.shared.ProtocolVersion;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
-import me.neznamy.tab.shared.util.ComponentCache;
-import me.neznamy.tab.shared.util.ReflectionUtils;
-import org.bukkit.Bukkit;
-
-import java.lang.reflect.Field;
-import java.lang.reflect.Method;
-
-/**
- * Class holding all NMS classes, methods, fields and constructors used by TAB.
- */
-public class NMSStorage {
-
-    /** Instance of this class */
-    @Getter @Setter private static NMSStorage instance;
-
-    /** Server's NMS/CraftBukkit package */
-    private final String serverPackage = Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3];
-
-    /** Server's minor version */
-    @Getter private final int minorVersion = Integer.parseInt(serverPackage.split("_")[1]);
-
-    /** Basic universal values */
-    protected Class<?> Packet;
-    protected Class<?> NetworkManager;
-    public Class<?> EntityPlayer;
-    protected Class<?> EntityHuman;
-    protected Class<?> PlayerConnection;
-
-    // Ping field for 1.5.2 - 1.16.5, 1.17+ has Player#getPing()
-    public Field PING;
-
-    public Field PLAYER_CONNECTION;
-    public Field NETWORK_MANAGER;
-    public Field CHANNEL;
-    public Method getHandle;
-    public Method sendPacket;
-    public Method getProfile;
-
-    /** Chat components */
-    protected Class<?> ChatSerializer;
-    public Method ChatSerializer_DESERIALIZE;
-
-    public final ComponentCache<IChatBaseComponent, Object> componentCache = new ComponentCache<>(1000,
-            (component, clientVersion) -> ChatSerializer_DESERIALIZE.invoke(null, component.toString(clientVersion)));
-
-    /**
-     * Constructs new instance and attempts to load all fields, methods and constructors.
-     */
-    @SneakyThrows
-    public NMSStorage() {
-        ProtocolVersion.UNKNOWN_SERVER_VERSION.setMinorVersion(minorVersion); //fixing compatibility with forks that set version field value to "Unknown"
-        loadClasses();
-        if (minorVersion >= 7) {
-            if (BukkitReflection.is1_20_2Plus()) {
-                NETWORK_MANAGER = ReflectionUtils.getOnlyField(PlayerConnection.getSuperclass(), NetworkManager);
-            } else {
-                NETWORK_MANAGER = ReflectionUtils.getOnlyField(PlayerConnection, NetworkManager);
-            }
-            sendPacket = ReflectionUtils.getMethods(PlayerConnection, void.class, Packet).get(0);
-        } else {
-            sendPacket = ReflectionUtils.getMethod(PlayerConnection, new String[]{"sendPacket"}, Packet);
-        }
-        if (minorVersion >= 8) {
-            ChatSerializer_DESERIALIZE = ReflectionUtils.getMethods(ChatSerializer, Object.class, String.class).get(0);
-            CHANNEL = ReflectionUtils.getOnlyField(NetworkManager, Channel.class);
-
-            // There is only supposed to be one, however there are exceptions:
-            // #1 - CatServer adds another method
-            // #2 - Random mods may perform deep hack into the server and add another one (see #1089)
-            // Get first and hope for the best, alternatively players may not have correct skins in layout, but who cares
-            getProfile = ReflectionUtils.getMethods(EntityHuman, GameProfile.class).get(0);
-        }
-        PLAYER_CONNECTION = ReflectionUtils.getOnlyField(EntityPlayer, PlayerConnection);
-        getHandle = Class.forName("org.bukkit.craftbukkit." + serverPackage + ".entity.CraftPlayer").getMethod("getHandle");
-        BukkitTabList.load();
-        DataWatcher.load();
-        PacketEntityView.load();
-        PacketScoreboard.load();
-        HeaderFooter.findInstance();
-        if (minorVersion < 17) {
-            PING = ReflectionUtils.getField(EntityPlayer, "ping", "field_71138_i"); // 1.5.2 - 1.16.5, 1.7.10 Thermos
-        }
-    }
-
-    private void loadClasses() throws ClassNotFoundException {
-        if (minorVersion >= 17 && ReflectionUtils.classExists("net.minecraft.ChatFormatting")) {
-            ChatSerializer = Class.forName("net.minecraft.network.chat.Component$Serializer");
-            EntityHuman = Class.forName("net.minecraft.world.entity.player.Player");
-            NetworkManager = Class.forName("net.minecraft.network.Connection");
-            Packet = Class.forName("net.minecraft.network.protocol.Packet");
-            EntityPlayer = Class.forName("net.minecraft.server.level.ServerPlayer");
-            PlayerConnection = Class.forName("net.minecraft.server.network.ServerGamePacketListenerImpl");
-        } else if (minorVersion >= 17) {
-            ChatSerializer = Class.forName("net.minecraft.network.chat.IChatBaseComponent$ChatSerializer");
-            EntityHuman = Class.forName("net.minecraft.world.entity.player.EntityHuman");
-            NetworkManager = Class.forName("net.minecraft.network.NetworkManager");
-            Packet = Class.forName("net.minecraft.network.protocol.Packet");
-            EntityPlayer = Class.forName("net.minecraft.server.level.EntityPlayer");
-            PlayerConnection = Class.forName("net.minecraft.server.network.PlayerConnection");
-        } else {
-            EntityHuman = BukkitReflection.getLegacyClass("EntityHuman");
-            Packet = BukkitReflection.getLegacyClass("Packet");
-            EntityPlayer = BukkitReflection.getLegacyClass("EntityPlayer");
-            PlayerConnection = BukkitReflection.getLegacyClass("PlayerConnection");
-            NetworkManager = BukkitReflection.getLegacyClass("NetworkManager");
-            if (minorVersion >= 7) {
-                ChatSerializer = BukkitReflection.getLegacyClass("IChatBaseComponent$ChatSerializer", "ChatSerializer");
-            }
-        }
-    }
-}

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/nms/PacketEntityView.java

@@ -4,7 +4,6 @@ import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 import lombok.SneakyThrows;
 import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
-import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.backend.EntityData;
 import me.neznamy.tab.shared.backend.Location;
 import me.neznamy.tab.shared.backend.entityview.EntityView;
@@ -255,7 +254,7 @@ public class PacketEntityView implements EntityView {
             SpawnEntity_EntityType.set(nmsPacket, entityIds.get((EntityType) entityType));
             player.sendPacket(nmsPacket);
         }
-        if (TAB.getInstance().getServerVersion().getMinorVersion() >= 15) {
+        if (BukkitReflection.getMinorVersion() >= 15) {
             updateEntityMetadata(entityId, data);
         }
     }

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/nms/PacketSender.java

@@ -0,0 +1,47 @@
+package me.neznamy.tab.platforms.bukkit.nms;
+
+import lombok.Getter;
+import lombok.SneakyThrows;
+import me.neznamy.tab.shared.chat.EnumChatFormat;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+public class PacketSender {
+
+    private static Method getHandle;
+    private static Field PLAYER_CONNECTION;
+    private static Method sendPacket;
+    @Getter private static boolean available;
+
+    public static void tryLoad() {
+        try {
+            Class<?> Packet = BukkitReflection.getClass("network.protocol.Packet", "Packet");
+            Class<?> EntityPlayer = BukkitReflection.getClass("server.level.ServerPlayer", "server.level.EntityPlayer", "EntityPlayer");
+            Class<?> PlayerConnection = BukkitReflection.getClass("server.network.ServerGamePacketListenerImpl",
+                    "server.network.PlayerConnection", "PlayerConnection");
+            getHandle = Class.forName("org.bukkit.craftbukkit." + BukkitReflection.getServerPackage() + ".entity.CraftPlayer").getMethod("getHandle");
+            PLAYER_CONNECTION = ReflectionUtils.getOnlyField(EntityPlayer, PlayerConnection);
+            if (BukkitReflection.getMinorVersion() >= 7) {
+                sendPacket = ReflectionUtils.getMethods(PlayerConnection, void.class, Packet).get(0);
+            } else {
+                sendPacket = ReflectionUtils.getMethod(PlayerConnection, new String[]{"sendPacket"}, Packet);
+            }
+            available = true;
+        } catch (Exception e) {
+            Bukkit.getConsoleSender().sendMessage(EnumChatFormat.RED.getFormat() + "[TAB] Failed to initialize NMS fields for " +
+                    "sending packets due to a compatibility error. Majority of the features will not work / be very limited. " +
+                    "Please update the plugin to a version with proper support for your server version.");
+        }
+    }
+
+    @SneakyThrows
+    public static void sendPacket(@NotNull Player player, @NotNull Object packet) {
+        if (!player.isOnline() || sendPacket == null) return;
+        sendPacket.invoke(PLAYER_CONNECTION.get(getHandle.invoke(player)), packet);
+    }
+}

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/nms/PingRetriever.java

@@ -0,0 +1,41 @@
+package me.neznamy.tab.platforms.bukkit.nms;
+
+import lombok.SneakyThrows;
+import me.neznamy.tab.shared.chat.EnumChatFormat;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+public class PingRetriever {
+
+    private static Method getHandle;
+    private static Field PING;
+
+    public static void tryLoad() {
+        try {
+            if (BukkitReflection.getMinorVersion() < 17) {
+                getHandle = Class.forName("org.bukkit.craftbukkit." + BukkitReflection.getServerPackage() + ".entity.CraftPlayer").getMethod("getHandle");
+                Class<?> EntityPlayer = BukkitReflection.getClass("server.level.ServerPlayer", "server.level.EntityPlayer", "EntityPlayer");
+                PING = ReflectionUtils.getField(EntityPlayer, "ping", "field_71138_i"); // 1.5.2 - 1.16.5, 1.7.10 Thermos
+            }
+        } catch (Exception e) {
+            Bukkit.getConsoleSender().sendMessage(EnumChatFormat.RED.getFormat() + "[TAB] Failed to initialize NMS fields for " +
+                    "getting player's ping due to a compatibility error. This will " +
+                    "result in ping showing \"-1\". " +
+                    "Please update the plugin a to version with native support for your server version to properly show ping.");
+        }
+    }
+
+    @SneakyThrows
+    public static int getPing(@NotNull Player player) {
+        if (BukkitReflection.getMinorVersion() >= 17) {
+            return player.getPing();
+        }
+        if (PING == null) return -1;
+        return PING.getInt(getHandle.invoke(player));
+    }
+}

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/platform/BukkitPlatform.java

@@ -1,9 +1,15 @@
 package me.neznamy.tab.platforms.bukkit.platform;
 
+import de.myzelyam.api.vanish.VanishAPI;
 import lombok.Getter;
 import lombok.SneakyThrows;
 import me.clip.placeholderapi.PlaceholderAPI;
 import me.neznamy.tab.platforms.bukkit.*;
+import me.neznamy.tab.platforms.bukkit.header.HeaderFooter;
+import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
+import me.neznamy.tab.platforms.bukkit.nms.PacketSender;
+import me.neznamy.tab.platforms.bukkit.nms.PingRetriever;
+import me.neznamy.tab.platforms.bukkit.scoreboard.ScoreboardLoader;
 import me.neznamy.tab.shared.GroupManager;
 import me.neznamy.tab.shared.ProtocolVersion;
 import me.neznamy.tab.shared.TabConstants;
@@ -15,7 +21,6 @@ import me.neznamy.tab.platforms.bukkit.features.BukkitTabExpansion;
 import me.neznamy.tab.platforms.bukkit.features.PerWorldPlayerList;
 import me.neznamy.tab.platforms.bukkit.features.WitherBossBar;
 import me.neznamy.tab.platforms.bukkit.features.BukkitNameTagX;
-import me.neznamy.tab.platforms.bukkit.nms.NMSStorage;
 import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.backend.BackendPlatform;
 import me.neznamy.tab.shared.features.PlaceholderManagerImpl;
@@ -49,23 +54,40 @@ import java.lang.reflect.Field;
 @Getter
 public class BukkitPlatform implements BackendPlatform {
 
-    /** Plugin instance for registering tasks and events */
+    /** Flag tracking plugin presence */
+    private final boolean premiumVanish = Bukkit.getPluginManager().isPluginEnabled("PremiumVanish");
+
+    /**
+     * Plugin instance for registering tasks and events
+     */
     @NotNull
     private final JavaPlugin plugin;
 
-    /** Variables checking presence of other plugins to hook into */
+    /**
+     * Variables checking presence of other plugins to hook into
+     */
     private final boolean placeholderAPI = ReflectionUtils.classExists("me.clip.placeholderapi.PlaceholderAPI");
 
-    /** NMS server to get TPS from on spigot */
-    @Nullable private Object server;
+    /**
+     * NMS server to get TPS from on spigot
+     */
+    @Nullable
+    private Object server;
 
-    /** TPS field */
-    @Nullable private Field spigotTps;
+    /**
+     * TPS field
+     */
+    @Nullable
+    private Field spigotTps;
 
-    /** Detection for presence of Paper's TPS getter */
+    /**
+     * Detection for presence of Paper's TPS getter
+     */
     private final boolean paperTps = ReflectionUtils.methodExists(Bukkit.class, "getTPS");
 
-    /** Detection for presence of Paper's MSPT getter */
+    /**
+     * Detection for presence of Paper's MSPT getter
+     */
     private final boolean paperMspt = ReflectionUtils.methodExists(Bukkit.class, "getAverageTickTime");
 
     public BukkitPlatform(@NotNull JavaPlugin plugin) {
@@ -76,6 +98,13 @@ public class BukkitPlatform implements BackendPlatform {
         } catch (ReflectiveOperationException e) {
             //not spigot
         }
+        PingRetriever.tryLoad();
+        PacketSender.tryLoad();
+        ScoreboardLoader.findInstance();
+        if (BukkitReflection.getMinorVersion() >= 8) {
+            BukkitPipelineInjector.tryLoad();
+            HeaderFooter.findInstance();
+        }
     }
 
     @Override
@@ -106,20 +135,20 @@ public class BukkitPlatform implements BackendPlatform {
         }
         // Override for the PAPI placeholder to prevent console errors on unsupported server versions when ping field changes
         manager.registerPlayerPlaceholder("%player_ping%", manager.getRefreshInterval("%player_ping%"),
-                p -> ((TabPlayer)p).getPing());
+                p -> ((TabPlayer) p).getPing());
         BackendPlatform.super.registerPlaceholders();
     }
 
     @Override
     @Nullable
     public PipelineInjector createPipelineInjector() {
-        return NMSStorage.getInstance().getMinorVersion() >= 8 ? new BukkitPipelineInjector() : null;
+        return BukkitReflection.getMinorVersion() >= 8 && BukkitPipelineInjector.isAvailable() ? new BukkitPipelineInjector() : null;
     }
 
     @Override
     @NotNull
     public NameTag getUnlimitedNameTags() {
-        return new BukkitNameTagX(plugin);
+        return BukkitReflection.getMinorVersion() >= 8 ? new BukkitNameTagX(plugin) : new NameTag();
     }
 
     @Override
@@ -169,7 +198,7 @@ public class BukkitPlatform implements BackendPlatform {
             Bukkit.getScheduler().runTask(plugin, () -> {
                 long time = System.nanoTime();
                 ppl[0].updateValue(p, placeholderAPI ? PlaceholderAPI.setPlaceholders((Player) p.getPlayer(), syncedPlaceholder) : identifier);
-                TAB.getInstance().getCPUManager().addPlaceholderTime(identifier, System.nanoTime()-time);
+                TAB.getInstance().getCPUManager().addPlaceholderTime(identifier, System.nanoTime() - time);
             });
             return null;
         });
@@ -218,7 +247,7 @@ public class BukkitPlatform implements BackendPlatform {
         metrics.addCustomChart(new SimplePie(TabConstants.MetricsChart.PERMISSION_SYSTEM,
                 () -> TAB.getInstance().getGroupManager().getPermissionPlugin()));
         metrics.addCustomChart(new SimplePie(TabConstants.MetricsChart.SERVER_VERSION,
-                () -> "1." + TAB.getInstance().getServerVersion().getMinorVersion() + ".x"));
+                () -> "1." + BukkitReflection.getMinorVersion() + ".x"));
     }
 
     @Override
@@ -233,19 +262,6 @@ public class BukkitPlatform implements BackendPlatform {
         return plugin.getDataFolder();
     }
 
-    /**
-     * Converts internal component class to platform's component class
-     *
-     * @param   component
-     *          Component to convert
-     * @param   version
-     *          Game version to convert component for
-     * @return  Converted component
-     */
-    public Object toComponent(@NotNull IChatBaseComponent component, @NotNull ProtocolVersion version) {
-        return NMSStorage.getInstance().componentCache.get(component, version);
-    }
-
     @Override
     @NotNull
     public GroupManager detectPermissionPlugin() {
@@ -275,11 +291,26 @@ public class BukkitPlatform implements BackendPlatform {
 
     @Override
     public double getMSPT() {
-       if (paperMspt) return Bukkit.getAverageTickTime();
-       return -1;
+        if (paperMspt) return Bukkit.getAverageTickTime();
+        return -1;
+    }
+
+    public void runSync(@NotNull Entity entity, @NotNull Runnable task) {
+        Bukkit.getScheduler().runTask(plugin, task);
     }
 
     public void runEntityTask(@NotNull Entity entity, @NotNull Runnable task) {
         task.run();
     }
+
+    @Override
+    public boolean canSee(@NotNull TabPlayer viewer, @NotNull TabPlayer target) {
+        Player bViewer = ((BukkitTabPlayer)viewer).getPlayer();
+        Player bTarget = ((BukkitTabPlayer)target).getPlayer();
+
+        //noinspection ConstantConditions
+        if (premiumVanish && VanishAPI.canSee(bViewer, bTarget)) return true;
+        if (bViewer.canSee(bTarget)) return true;
+        return BackendPlatform.super.canSee(viewer, target);
+    }
 }

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/platform/FoliaPlatform.java

@@ -74,9 +74,10 @@ public class FoliaPlatform extends BukkitPlatform {
      * @param   task
      *          Task to run
      */
+    @Override
     @SneakyThrows
     @SuppressWarnings("JavaReflectionMemberAccess")
-    private void runSync(@NotNull Entity entity, @NotNull Runnable task) {
+    public void runSync(@NotNull Entity entity, @NotNull Runnable task) {
         Object entityScheduler = Entity.class.getMethod("getScheduler").invoke(entity);
         Consumer<?> consumer = $ -> task.run(); // Reflection and lambdas don't go together
         entityScheduler.getClass().getMethod("run", Plugin.class, Consumer.class, Runnable.class)

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/scoreboard/BukkitScoreboard.java

@@ -1,6 +1,7 @@
 package me.neznamy.tab.platforms.bukkit.scoreboard;
 
 import lombok.Getter;
+import lombok.SneakyThrows;
 import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
 import me.neznamy.tab.platforms.bukkit.BukkitUtils;
 import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
@@ -13,13 +14,12 @@ import me.neznamy.tab.shared.platform.Scoreboard;
 import me.neznamy.tab.shared.util.ReflectionUtils;
 import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
-import org.bukkit.scoreboard.NameTagVisibility;
-import org.bukkit.scoreboard.Objective;
-import org.bukkit.scoreboard.RenderType;
-import org.bukkit.scoreboard.Team;
+import org.bukkit.scoreboard.*;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.Collection;
+import java.util.concurrent.CountDownLatch;
 
 /**
  * Scoreboard implementation using Bukkit API (1.5.2+). It has several issues:
@@ -47,49 +47,68 @@ public class BukkitScoreboard extends Scoreboard<BukkitTabPlayer> {
 
     /** Flag tracking whether this implementation is available for use */
     @Getter
-    private static final boolean available = ReflectionUtils.methodExists(Bukkit.class, "getScoreboardManager");
+    private static final boolean available;
+
+    /** Array of display slots, because the Bukkit order does not match network ordinals */
+    private static org.bukkit.scoreboard.DisplaySlot[] slots;
 
     /** Server's minor version */
     private final int serverMinorVersion = BukkitReflection.getMinorVersion();
 
-    @NotNull
-    protected final org.bukkit.scoreboard.Scoreboard scoreboard = Bukkit.getScoreboardManager().getNewScoreboard();
+    protected org.bukkit.scoreboard.Scoreboard scoreboard;
 
+    static {
+        available = ReflectionUtils.methodExists(Bukkit.class, "getScoreboardManager");
+        if (available) {
+            slots = new org.bukkit.scoreboard.DisplaySlot[]{
+                    org.bukkit.scoreboard.DisplaySlot.PLAYER_LIST,
+                    org.bukkit.scoreboard.DisplaySlot.SIDEBAR,
+                    org.bukkit.scoreboard.DisplaySlot.BELOW_NAME
+            };
+        }
+    }
+
+    @SneakyThrows
     public BukkitScoreboard(@NotNull BukkitTabPlayer player) {
         super(player);
 
         // Put player into a different scoreboard for per-player view
-        player.getPlayer().setScoreboard(scoreboard);
+        runSync(() -> {
+            scoreboard = Bukkit.getScoreboardManager().getNewScoreboard();
+            player.getPlayer().setScoreboard(scoreboard);
+        });
     }
 
     @Override
-    public void setDisplaySlot(@NotNull DisplaySlot slot, @NotNull String objective) {
+    public void setDisplaySlot0(int slot, @NotNull String objective) {
         checkPlayerScoreboard();
-        scoreboard.getObjective(objective).setDisplaySlot(org.bukkit.scoreboard.DisplaySlot.valueOf(slot.name()));
+        scoreboard.getObjective(objective).setDisplaySlot(slots[slot]);
     }
 
     @Override
-    public void setScore0(@NotNull String objective, @NotNull String playerName, int score) {
+    public void setScore0(@NotNull String objective, @NotNull String scoreHolder, int score,
+                          @Nullable IChatBaseComponent displayName, @Nullable IChatBaseComponent numberFormat) {
         checkPlayerScoreboard();
         if (serverMinorVersion >= 7 && TAB.getInstance().getServerVersion().getNetworkId() >= ProtocolVersion.V1_7_8.getNetworkId()) {
-            scoreboard.getObjective(objective).getScore(playerName).setScore(score);
+            scoreboard.getObjective(objective).getScore(scoreHolder).setScore(score);
         } else {
-            scoreboard.getObjective(objective).getScore(Bukkit.getOfflinePlayer(playerName)).setScore(score);
+            scoreboard.getObjective(objective).getScore(Bukkit.getOfflinePlayer(scoreHolder)).setScore(score);
         }
     }
 
     @Override
-    public void removeScore0(@NotNull String objective, @NotNull String playerName) {
+    public void removeScore0(@NotNull String objective, @NotNull String scoreHolder) {
         checkPlayerScoreboard();
         if (serverMinorVersion >= 7 && TAB.getInstance().getServerVersion().getNetworkId() >= ProtocolVersion.V1_7_8.getNetworkId()) {
-            scoreboard.resetScores(playerName);
+            scoreboard.resetScores(scoreHolder);
         } else {
-            scoreboard.resetScores(Bukkit.getOfflinePlayer(playerName));
+            scoreboard.resetScores(Bukkit.getOfflinePlayer(scoreHolder));
         }
     }
 
     @Override
-    public void registerObjective0(@NotNull String objectiveName, @NotNull String title, @NotNull HealthDisplay display) {
+    public void registerObjective0(@NotNull String objectiveName, @NotNull String title, int display,
+                                   @Nullable IChatBaseComponent numberFormat) {
         checkPlayerScoreboard();
         newObjective(objectiveName, "dummy", title, display);
     }
@@ -101,11 +120,12 @@ public class BukkitScoreboard extends Scoreboard<BukkitTabPlayer> {
     }
 
     @Override
-    public void updateObjective0(@NotNull String objectiveName, @NotNull String title, @NotNull HealthDisplay display) {
+    public void updateObjective0(@NotNull String objectiveName, @NotNull String title, int display,
+                                 @Nullable IChatBaseComponent numberFormat) {
         checkPlayerScoreboard();
         Objective obj = scoreboard.getObjective(objectiveName);
         setDisplayName(obj, title);
-        if (serverMinorVersion >= 14) obj.setRenderType(RenderType.valueOf(display.name()));
+        if (serverMinorVersion >= 14) obj.setRenderType(RenderType.values()[display]);
     }
 
     @Override
@@ -154,9 +174,14 @@ public class BukkitScoreboard extends Scoreboard<BukkitTabPlayer> {
         team.setCanSeeFriendlyInvisibles((options & 0x02) != 0);
     }
 
-    public void newObjective(String objectiveName, String criteria, String title, @NotNull HealthDisplay display) {
+    public void newObjective(String objectiveName, String criteria, String title, int display) {
         if (serverMinorVersion >= 14) {
-            scoreboard.registerNewObjective(objectiveName, criteria, transform(title, 128, Limitations.SCOREBOARD_TITLE_PRE_1_13), RenderType.valueOf(display.name()));
+            scoreboard.registerNewObjective(
+                    objectiveName,
+                    criteria,
+                    transform(title, 128, Limitations.SCOREBOARD_TITLE_PRE_1_13),
+                    RenderType.values()[display]
+            );
         } else {
             setDisplayName(scoreboard.registerNewObjective(objectiveName, display == HealthDisplay.HEARTS ? "health" : "dummy"), title);
         }
@@ -210,11 +235,34 @@ public class BukkitScoreboard extends Scoreboard<BukkitTabPlayer> {
      * Sadly there is no efficient solution to this, which md_5 fails
      * to understand and keeps saying you don't need packets for scoreboards.
      */
+    @SneakyThrows
     private void checkPlayerScoreboard() {
         if (player.getPlayer().getScoreboard() != scoreboard) {
-            player.getPlayer().setScoreboard(scoreboard);
             TAB.getInstance().getErrorManager().printError("Player " + player.getName() + " was in a different scoreboard " +
                     "than expected. This means another plugin changed player's scoreboard.");
+            runSync(() -> player.getPlayer().setScoreboard(scoreboard));
+        }
+    }
+
+    /**
+     * Runs the task if in main thread. If not, submits the task and waits for the result.
+     *
+     * @param   task
+     *          Task to run
+     */
+    @SneakyThrows
+    private void runSync(@NotNull Runnable task) {
+        if (Bukkit.isPrimaryThread()) {
+            // Server thread (plugin reload)
+            task.run();
+        } else {
+            // Plugin thread (player join)
+            CountDownLatch c = new CountDownLatch(1);
+            player.getPlatform().runSync(player.getPlayer(), () -> {
+                task.run();
+                c.countDown();
+            });
+            c.await();
         }
     }
 }

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/scoreboard/NullScoreboard.java

@@ -0,0 +1,67 @@
+package me.neznamy.tab.platforms.bukkit.scoreboard;
+
+import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.platform.Scoreboard;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Collection;
+
+public class NullScoreboard extends Scoreboard<BukkitTabPlayer> {
+
+    public NullScoreboard(@NotNull BukkitTabPlayer player) {
+        super(player);
+    }
+
+    @Override
+    protected void setDisplaySlot0(int slot, @NotNull String objective) {
+        // Do nothing
+    }
+
+    @Override
+    protected void setScore0(@NotNull String objective, @NotNull String scoreHolder, int score,
+                             @Nullable IChatBaseComponent displayName, @Nullable IChatBaseComponent numberFormat) {
+        // Do nothing
+    }
+
+    @Override
+    protected void removeScore0(@NotNull String objective, @NotNull String scoreHolder) {
+        // Do nothing
+    }
+
+    @Override
+    protected void registerObjective0(@NotNull String objectiveName, @NotNull String title, int display,
+                                      @Nullable IChatBaseComponent numberFormat) {
+        // Do nothing
+    }
+
+    @Override
+    protected void unregisterObjective0(@NotNull String objectiveName) {
+        // Do nothing
+    }
+
+    @Override
+    protected void updateObjective0(@NotNull String objectiveName, @NotNull String title, int display,
+                                    @Nullable IChatBaseComponent numberFormat) {
+        // Do nothing
+    }
+
+    @Override
+    protected void registerTeam0(@NotNull String name, @NotNull String prefix, @NotNull String suffix,
+                                 @NotNull NameVisibility visibility, @NotNull CollisionRule collision,
+                                 @NotNull Collection<String> players, int options) {
+        // Do nothing
+    }
+
+    @Override
+    protected void unregisterTeam0(@NotNull String name) {
+        // Do nothing
+    }
+
+    @Override
+    protected void updateTeam0(@NotNull String name, @NotNull String prefix, @NotNull String suffix,
+                               @NotNull NameVisibility visibility, @NotNull CollisionRule collision, int options) {
+        // Do nothing
+    }
+}

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/scoreboard/PacketScoreboard.java

@@ -7,8 +7,10 @@ import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
 import me.neznamy.tab.shared.chat.EnumChatFormat;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
 import me.neznamy.tab.shared.platform.Scoreboard;
+import me.neznamy.tab.shared.util.ComponentCache;
 import me.neznamy.tab.shared.util.ReflectionUtils;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
@@ -16,249 +18,98 @@ import java.lang.reflect.Method;
 import java.util.Collection;
 import java.util.List;
 
-import static me.neznamy.tab.platforms.bukkit.nms.BukkitReflection.getLegacyClass;
-
 /**
  * Scoreboard implementation for Bukkit, which uses packets
  * to send scoreboards to use the full potential on all versions
  * and server software without any artificial limits.
  */
-@SuppressWarnings({"unchecked", "rawtypes"})
+@SuppressWarnings("unchecked")
 public class PacketScoreboard extends Scoreboard<BukkitTabPlayer> {
 
     @Getter
     private static boolean available;
 
+    private static Class<?> Component;
+    private static Class<?> Scoreboard;
+    private static Class<?> ScoreboardObjective;
     private static Object emptyScoreboard;
-    private static Field IScoreboardCriteria_self;
+    private static Class<?> NumberFormat;
+    private static Constructor<?> newFixedFormat;
 
-    // PacketPlayOutScoreboardDisplayObjective
-    public static Class<?> DisplayObjectiveClass;
-    private static Constructor<?> newDisplayObjective;
-    public static Field DisplayObjective_POSITION;
-    public static Field DisplayObjective_OBJECTIVE_NAME;
-
-    // PacketPlayOutScoreboardScore
-    private static Class<Enum> EnumScoreboardAction;
-    private static Constructor<?> newScorePacket_1_13;
-    private static Constructor<?> newScorePacket_String;
-    private static Constructor<?> newScorePacket;
-    private static Constructor<?> newScoreboardScore;
-    private static Method ScoreboardScore_setScore;
-
-    // PacketPlayOutScoreboardObjective
+    // Objective packet
     public static Class<?> ObjectivePacketClass;
     private static Constructor<?> newObjectivePacket;
     public static Field Objective_OBJECTIVE_NAME;
     public static Field Objective_METHOD;
     private static Field Objective_RENDER_TYPE;
-    private static Field Objective_DISPLAY_NAME;
-    private static Class<Enum> EnumScoreboardHealthDisplay;
     private static Constructor<?> newScoreboardObjective;
+    private static Method ScoreboardObjective_setDisplayName;
+    private static Enum<?>[] healthDisplays;
+    private static Object IScoreboardCriteria_dummy;
 
-    // PacketPlayOutScoreboardTeamStorage
-    public static Class<?> TeamPacketClass;
-    private static Constructor<?> newTeamPacket;
-    private static Method TeamPacketConstructor_of;
-    private static Method TeamPacketConstructor_ofBoolean;
-    public static Field TeamPacket_NAME;
-    public static Field TeamPacket_ACTION;
-    public static Field TeamPacket_PLAYERS;
-    private static Class<Enum> EnumNameTagVisibility;
-    private static Class<Enum> EnumTeamPush;
-    private static Constructor<?> newScoreboardTeam;
-    private static Method ScoreboardTeam_getPlayerNameSet;
-    private static Method ScoreboardTeam_setNameTagVisibility;
-    private static Method ScoreboardTeam_setCollisionRule;
-    private static Method ScoreboardTeam_setPrefix;
-    private static Method ScoreboardTeam_setSuffix;
-    private static Method ScoreboardTeam_setColor;
-    private static Method ScoreboardTeam_setAllowFriendlyFire;
-    private static Method ScoreboardTeam_setCanSeeFriendlyInvisibles;
+    private static ScorePacketData scorePacketData;
+    public static TeamPacketData teamPacketData;
+    public static DisplayPacketData displayPacketData;
 
-    private static Enum[] scoreboardActions;
-    private static Enum[] displaySlots;
-    private static Enum[] nameVisibilities;
-    private static Enum[] collisionRules;
-    private static Enum[] healthDisplays;
-    private static Enum[] chatFormats;
+    private static Method ChatSerializer_DESERIALIZE;
+    private static final ComponentCache<IChatBaseComponent, Object> componentCache = new ComponentCache<>(1000,
+            (component, clientVersion) -> ChatSerializer_DESERIALIZE.invoke(null, component.toString(clientVersion)));
 
-    public static void load() throws ReflectiveOperationException {
-        int minorVersion = BukkitReflection.getMinorVersion();
-        Class<?> scoreboardTeam;
-        Class<?> scoreboardObjective;
-        Class<?> scoreboardScoreClass;
-        Class<?> IScoreboardCriteria;
-        Class<?> scoreboard;
-        Class<?> scorePacketClass;
-        Class<?> IChatBaseComponent = null;
-        Class<Enum> enumChatFormatClass;
-        if (BukkitReflection.isMojangMapped()) {
-            IChatBaseComponent = Class.forName("net.minecraft.network.chat.Component");
-            enumChatFormatClass = (Class<Enum>) Class.forName("net.minecraft.ChatFormatting");
-            DisplayObjectiveClass = Class.forName("net.minecraft.network.protocol.game.ClientboundSetDisplayObjectivePacket");
-            ObjectivePacketClass = Class.forName("net.minecraft.network.protocol.game.ClientboundSetObjectivePacket");
-            scoreboard = Class.forName("net.minecraft.world.scores.Scoreboard");
-            scorePacketClass = Class.forName("net.minecraft.network.protocol.game.ClientboundSetScorePacket");
-            scoreboardObjective = Class.forName("net.minecraft.world.scores.Objective");
-            scoreboardScoreClass = Class.forName("net.minecraft.world.scores.Score");
-            IScoreboardCriteria = Class.forName("net.minecraft.world.scores.criteria.ObjectiveCriteria");
-            EnumScoreboardHealthDisplay = (Class<Enum>) Class.forName("net.minecraft.world.scores.criteria.ObjectiveCriteria$RenderType");
-            EnumScoreboardAction = (Class<Enum>) Class.forName("net.minecraft.server.ServerScoreboard$Method");
-            TeamPacketClass = Class.forName("net.minecraft.network.protocol.game.ClientboundSetPlayerTeamPacket");
-            scoreboardTeam = Class.forName("net.minecraft.world.scores.PlayerTeam");
-            EnumNameTagVisibility = (Class<Enum>) Class.forName("net.minecraft.world.scores.Team$Visibility");
-            EnumTeamPush = (Class<Enum>) Class.forName("net.minecraft.world.scores.Team$CollisionRule");
-        } else if (minorVersion >= 17) {
-            IChatBaseComponent = Class.forName("net.minecraft.network.chat.IChatBaseComponent");
-            enumChatFormatClass = (Class<Enum>) Class.forName("net.minecraft.EnumChatFormat");
-            DisplayObjectiveClass = Class.forName("net.minecraft.network.protocol.game.PacketPlayOutScoreboardDisplayObjective");
-            ObjectivePacketClass = Class.forName("net.minecraft.network.protocol.game.PacketPlayOutScoreboardObjective");
-            scoreboard = Class.forName("net.minecraft.world.scores.Scoreboard");
-            scorePacketClass = Class.forName("net.minecraft.network.protocol.game.PacketPlayOutScoreboardScore");
-            scoreboardObjective = Class.forName("net.minecraft.world.scores.ScoreboardObjective");
-            scoreboardScoreClass = Class.forName("net.minecraft.world.scores.ScoreboardScore");
-            IScoreboardCriteria = Class.forName("net.minecraft.world.scores.criteria.IScoreboardCriteria");
-            EnumScoreboardHealthDisplay = (Class<Enum>) Class.forName("net.minecraft.world.scores.criteria.IScoreboardCriteria$EnumScoreboardHealthDisplay");
-            EnumScoreboardAction = (Class<Enum>) Class.forName("net.minecraft.server.ScoreboardServer$Action");
-            TeamPacketClass = Class.forName("net.minecraft.network.protocol.game.PacketPlayOutScoreboardTeam");
-            scoreboardTeam = Class.forName("net.minecraft.world.scores.ScoreboardTeam");
-            EnumNameTagVisibility = (Class<Enum>) Class.forName("net.minecraft.world.scores.ScoreboardTeamBase$EnumNameTagVisibility");
-            EnumTeamPush = (Class<Enum>) Class.forName("net.minecraft.world.scores.ScoreboardTeamBase$EnumTeamPush");
-        } else {
-            enumChatFormatClass = (Class<Enum>) getLegacyClass("EnumChatFormat");
-            DisplayObjectiveClass = getLegacyClass("PacketPlayOutScoreboardDisplayObjective", "Packet208SetScoreboardDisplayObjective");
-            ObjectivePacketClass = getLegacyClass("PacketPlayOutScoreboardObjective", "Packet206SetScoreboardObjective");
-            TeamPacketClass = getLegacyClass("PacketPlayOutScoreboardTeam", "Packet209SetScoreboardTeam");
-            scorePacketClass = getLegacyClass("PacketPlayOutScoreboardScore", "Packet207SetScoreboardScore");
-            scoreboard = getLegacyClass("Scoreboard");
-            scoreboardObjective = getLegacyClass("ScoreboardObjective");
-            scoreboardScoreClass = getLegacyClass("ScoreboardScore");
-            IScoreboardCriteria = getLegacyClass("IScoreboardCriteria", "IObjective"); // 1.5.1+, 1.5
-            scoreboardTeam = getLegacyClass("ScoreboardTeam");
+    static {
+        try {
+            int minorVersion = BukkitReflection.getMinorVersion();
+            Scoreboard = BukkitReflection.getClass("world.scores.Scoreboard", "Scoreboard");
+            ScoreboardObjective = BukkitReflection.getClass("world.scores.Objective", "world.scores.ScoreboardObjective", "ScoreboardObjective");
+            Class<?> IScoreboardCriteria = BukkitReflection.getClass(
+                    "world.scores.criteria.ObjectiveCriteria", // Mojang mapped
+                    "world.scores.criteria.IScoreboardCriteria", // Bukkit 1.17.+
+                    "IScoreboardCriteria", // 1.5.1 - 1.16.5
+                    "IObjective" // 1.5.0
+            );
+            ObjectivePacketClass = BukkitReflection.getClass(
+                    "network.protocol.game.ClientboundSetObjectivePacket", // Mojang mapped
+                    "network.protocol.game.PacketPlayOutScoreboardObjective", // Bukkit 1.17+
+                    "PacketPlayOutScoreboardObjective", // 1.7 - 1.16.5
+                    "Packet206SetScoreboardObjective" // 1.5 - 1.6.4
+            );
+            emptyScoreboard = Scoreboard.getConstructor().newInstance();
+            Objective_OBJECTIVE_NAME = ReflectionUtils.getFields(ObjectivePacketClass, String.class).get(0);
+            List<Field> list = ReflectionUtils.getFields(ObjectivePacketClass, int.class);
+            Objective_METHOD = list.get(list.size()-1);
+            newObjectivePacket = ObjectivePacketClass.getConstructor(ScoreboardObjective, int.class);
+            IScoreboardCriteria_dummy = ReflectionUtils.getFields(IScoreboardCriteria, IScoreboardCriteria).get(0).get(null);
+            newScoreboardObjective = ReflectionUtils.getOnlyConstructor(ScoreboardObjective);
             if (minorVersion >= 7) {
-                IChatBaseComponent = getLegacyClass("IChatBaseComponent");
+                Component = BukkitReflection.getClass("network.chat.Component", "network.chat.IChatBaseComponent", "IChatBaseComponent");
+                Class<?> ChatSerializer = BukkitReflection.getClass("network.chat.Component$Serializer",
+                        "network.chat.IChatBaseComponent$ChatSerializer", "IChatBaseComponent$ChatSerializer", "ChatSerializer");
+                ChatSerializer_DESERIALIZE = ReflectionUtils.getMethods(ChatSerializer, Object.class, String.class).get(0);
             }
             if (minorVersion >= 8) {
-                EnumScoreboardHealthDisplay = (Class<Enum>) getLegacyClass("IScoreboardCriteria$EnumScoreboardHealthDisplay", "EnumScoreboardHealthDisplay");
-                EnumScoreboardAction = (Class<Enum>) getLegacyClass("ScoreboardServer$Action", "PacketPlayOutScoreboardScore$EnumScoreboardAction", "EnumScoreboardAction");
-                EnumNameTagVisibility = (Class<Enum>) getLegacyClass("ScoreboardTeamBase$EnumNameTagVisibility", "EnumNameTagVisibility");
+                Class<?> EnumScoreboardHealthDisplay = BukkitReflection.getClass(
+                        "world.scores.criteria.ObjectiveCriteria$RenderType",
+                        "world.scores.criteria.IScoreboardCriteria$EnumScoreboardHealthDisplay",
+                        "IScoreboardCriteria$EnumScoreboardHealthDisplay",
+                        "EnumScoreboardHealthDisplay");
+                healthDisplays = (Enum<?>[]) EnumScoreboardHealthDisplay.getMethod("values").invoke(null);
+                if (minorVersion < 13) {
+                    Objective_RENDER_TYPE = ReflectionUtils.getOnlyField(ObjectivePacketClass, EnumScoreboardHealthDisplay);
+                }
             }
-            if (minorVersion >= 9) {
-                EnumTeamPush = (Class<Enum>) getLegacyClass("ScoreboardTeamBase$EnumTeamPush");
+            if (minorVersion < 13) {
+                ScoreboardObjective_setDisplayName = ReflectionUtils.getOnlyMethod(ScoreboardObjective, void.class, String.class);
             }
-        }
-        emptyScoreboard = scoreboard.getConstructor().newInstance();
-        IScoreboardCriteria_self = ReflectionUtils.getFields(IScoreboardCriteria, IScoreboardCriteria).get(0);
-        if (BukkitReflection.is1_20_2Plus()) {
-            Class<?> DisplaySlot = Class.forName("net.minecraft.world.scores.DisplaySlot");
-            DisplayObjective_POSITION = ReflectionUtils.getOnlyField(DisplayObjectiveClass, DisplaySlot);
-            newDisplayObjective = DisplayObjectiveClass.getConstructor(DisplaySlot, scoreboardObjective);
-            displaySlots = (Enum[]) DisplaySlot.getDeclaredMethod("values").invoke(null);
-        } else {
-            DisplayObjective_POSITION = ReflectionUtils.getOnlyField(DisplayObjectiveClass, int.class);
-            newDisplayObjective = DisplayObjectiveClass.getConstructor(int.class, scoreboardObjective);
-        }
-        DisplayObjective_OBJECTIVE_NAME = ReflectionUtils.getOnlyField(DisplayObjectiveClass, String.class);
-        newScoreboardObjective = ReflectionUtils.getOnlyConstructor(scoreboardObjective);
-        Objective_OBJECTIVE_NAME = ReflectionUtils.getFields(ObjectivePacketClass, String.class).get(0);
-        List<Field> list = ReflectionUtils.getFields(ObjectivePacketClass, int.class);
-        Objective_METHOD = list.get(list.size()-1);
-        newScoreboardScore = scoreboardScoreClass.getConstructor(scoreboard, scoreboardObjective, String.class);
-        newScoreboardTeam = scoreboardTeam.getConstructor(scoreboard, String.class);
-        TeamPacket_NAME = ReflectionUtils.getFields(TeamPacketClass, String.class).get(0);
-        TeamPacket_ACTION = ReflectionUtils.getInstanceFields(TeamPacketClass, int.class).get(0);
-        TeamPacket_PLAYERS = ReflectionUtils.getOnlyField(TeamPacketClass, Collection.class);
-        ScoreboardTeam_getPlayerNameSet = ReflectionUtils.getOnlyMethod(scoreboardTeam, Collection.class);
-        if (minorVersion >= 13) {
-            newScorePacket_1_13 = scorePacketClass.getConstructor(EnumScoreboardAction, String.class, String.class, int.class);
-            newObjectivePacket = ObjectivePacketClass.getConstructor(scoreboardObjective, int.class);
-            Objective_DISPLAY_NAME = ReflectionUtils.getOnlyField(ObjectivePacketClass, IChatBaseComponent);
-            ScoreboardTeam_setColor = ReflectionUtils.getOnlyMethod(scoreboardTeam, void.class, enumChatFormatClass);
-            scoreboardActions = new Enum[] {
-                    Enum.valueOf(EnumScoreboardAction, "CHANGE"),
-                    Enum.valueOf(EnumScoreboardAction, "REMOVE")
-            };
-            chatFormats = (Enum[]) enumChatFormatClass.getMethod("values").invoke(null);
-        } else {
-            newScorePacket_String = scorePacketClass.getConstructor(String.class);
-            newObjectivePacket = ObjectivePacketClass.getConstructor();
-            Objective_DISPLAY_NAME = ReflectionUtils.getFields(ObjectivePacketClass, String.class).get(1);
-            if (minorVersion >= 8) {
-                newScorePacket = scorePacketClass.getConstructor(scoreboardScoreClass);
-                Objective_RENDER_TYPE = ReflectionUtils.getOnlyField(ObjectivePacketClass, EnumScoreboardHealthDisplay);
-            } else {
-                newScorePacket = scorePacketClass.getConstructor(scoreboardScoreClass, int.class);
+            if (BukkitReflection.is1_20_3Plus()) {
+                NumberFormat = BukkitReflection.getClass("network.chat.numbers.NumberFormat");
+                newFixedFormat = BukkitReflection.getClass("network.chat.numbers.FixedFormat").getConstructor(Component);
             }
+            scorePacketData = new ScorePacketData();
+            teamPacketData = new TeamPacketData();
+            displayPacketData = new DisplayPacketData();
+            available = true;
+        } catch (Exception ignored) {
+            // Print exception to find out what went wrong
         }
-        if (minorVersion >= 8) {
-            nameVisibilities = new Enum[] {
-                    Enum.valueOf(EnumNameTagVisibility, "ALWAYS"),
-                    Enum.valueOf(EnumNameTagVisibility, "NEVER"),
-                    Enum.valueOf(EnumNameTagVisibility, "HIDE_FOR_OTHER_TEAMS"),
-                    Enum.valueOf(EnumNameTagVisibility, "HIDE_FOR_OWN_TEAM")
-            };
-            healthDisplays = new Enum[] {
-                    Enum.valueOf(EnumScoreboardHealthDisplay, "INTEGER"),
-                    Enum.valueOf(EnumScoreboardHealthDisplay, "HEARTS")
-            };
-        }
-        if (minorVersion >= 9) {
-            ScoreboardTeam_setCollisionRule = ReflectionUtils.getOnlyMethod(scoreboardTeam, void.class, EnumTeamPush);
-            collisionRules = (Enum[]) EnumTeamPush.getMethod("values").invoke(null); // <1.13 has wrong enum constant names
-        }
-        if (minorVersion >= 17) {
-            TeamPacketConstructor_of = ReflectionUtils.getOnlyMethod(TeamPacketClass, TeamPacketClass, scoreboardTeam);
-            TeamPacketConstructor_ofBoolean = ReflectionUtils.getOnlyMethod(TeamPacketClass, TeamPacketClass, scoreboardTeam, boolean.class);
-        } else {
-            newTeamPacket = TeamPacketClass.getConstructor(scoreboardTeam, int.class);
-        }
-        ScoreboardScore_setScore = ReflectionUtils.getMethod(
-                scoreboardScoreClass,
-                new String[] {"func_96647_c", "setScore", "b", "c", "m_83402_"}, // {Thermos, 1.5.1 - 1.17.1 & 1.20.2+, 1.18 - 1.20.1, 1.5, Mohist 1.18.2}
-                int.class
-        );
-        ScoreboardTeam_setAllowFriendlyFire = ReflectionUtils.getMethod(
-                scoreboardTeam,
-                new String[] {"func_96660_a", "setAllowFriendlyFire", "a", "m_83355_"}, // {Thermos, 1.5.1+, 1.5 & 1.18+, Mohist 1.18.2}
-                boolean.class
-        );
-        ScoreboardTeam_setCanSeeFriendlyInvisibles = ReflectionUtils.getMethod(
-                scoreboardTeam,
-                new String[] {"func_98300_b", "setCanSeeFriendlyInvisibles", "b", "m_83362_", "setSeeFriendlyInvisibles"}, // {Thermos, 1.5.1+, 1.5 & 1.18+, Mohist 1.18.2, 1.20.2+}
-                boolean.class
-        );
-        if (minorVersion >= 13) {
-            ScoreboardTeam_setPrefix = ReflectionUtils.getMethod(
-                    scoreboardTeam,
-                    new String[]{"setPrefix", "b", "m_83360_", "setPlayerPrefix"}, // {1.17.1-, 1.18 - 1.20.1, Mohist 1.18.2, 1.20.2+}
-                    IChatBaseComponent
-            );
-            ScoreboardTeam_setSuffix = ReflectionUtils.getMethod(
-                    scoreboardTeam,
-                    new String[]{"setSuffix", "c", "m_83365_", "setPlayerSuffix"}, // {1.17.1-, 1.18 - 1.20.1, Mohist 1.18.2, 1.20.2+}
-                    IChatBaseComponent
-            );
-        } else {
-            ScoreboardTeam_setPrefix = ReflectionUtils.getMethod(
-                    scoreboardTeam,
-                    new String[] {"func_96666_b", "setPrefix", "b"}, // {Thermos, 1.5.1+, 1.5}
-                    String.class
-            );
-            ScoreboardTeam_setSuffix = ReflectionUtils.getMethod(
-                    scoreboardTeam,
-                    new String[] {"func_96662_c", "setSuffix", "c"}, // {Thermos, 1.5.1+, 1.5}
-                    String.class
-            );
-        }
-        if (minorVersion >= 8) {
-            ScoreboardTeam_setNameTagVisibility = ReflectionUtils.getMethod(
-                    scoreboardTeam,
-                    new String[] {"setNameTagVisibility", "a", "m_83346_"}, // {1.8.1+, 1.8 & 1.18+, Mohist 1.18.2}
-                    EnumNameTagVisibility
-            );
-        }
-        available = true;
     }
 
     public PacketScoreboard(@NotNull BukkitTabPlayer player) {
@@ -267,54 +118,36 @@ public class PacketScoreboard extends Scoreboard<BukkitTabPlayer> {
 
     @Override
     @SneakyThrows
-    public void setDisplaySlot(@NotNull DisplaySlot slot, @NotNull String objective) {
-        Object displaySlot;
-        if (BukkitReflection.is1_20_2Plus()) {
-            displaySlot = displaySlots[slot.ordinal()];
-        } else {
-            displaySlot = slot.ordinal();
-        }
-        player.sendPacket(newDisplayObjective.newInstance(displaySlot, newScoreboardObjective(objective)));
+    public void setDisplaySlot0(int slot, @NotNull String objective) {
+        player.sendPacket(displayPacketData.setDisplaySlot(slot, newObjective(objective, "", 0, null)));
     }
 
     @Override
     @SneakyThrows
-    public void registerObjective0(@NotNull String objectiveName, @NotNull String title, @NotNull HealthDisplay display) {
-        player.sendPacket(buildObjective(0, objectiveName, title, display));
+    public void registerObjective0(@NotNull String objectiveName, @NotNull String title, int display,
+                                   @Nullable IChatBaseComponent numberFormat) {
+        player.sendPacket(newObjectivePacket(ObjectiveAction.REGISTER, objectiveName, title, display, numberFormat));
     }
 
     @Override
     public void unregisterObjective0(@NotNull String objectiveName) {
-        player.sendPacket(buildObjective(1, objectiveName, "", HealthDisplay.INTEGER));
+        player.sendPacket(newObjectivePacket(ObjectiveAction.UNREGISTER, objectiveName, "", 0, null));
     }
 
     @Override
-    public void updateObjective0(@NotNull String objectiveName, @NotNull String title, @NotNull HealthDisplay display) {
-        player.sendPacket(buildObjective(2, objectiveName, title, display));
+    public void updateObjective0(@NotNull String objectiveName, @NotNull String title, int display,
+                                 @Nullable IChatBaseComponent numberFormat) {
+        player.sendPacket(newObjectivePacket(ObjectiveAction.UPDATE, objectiveName, title, display, numberFormat));
     }
 
     @SneakyThrows
-    private Object buildObjective(int action, String objectiveName, String title, @NotNull HealthDisplay display) {
-        if (BukkitReflection.getMinorVersion() >= 13) {
-            return newObjectivePacket.newInstance(
-                    newScoreboardObjective.newInstance(
-                            null,
-                            objectiveName,
-                            null,
-                            toComponent(title),
-                            healthDisplays[display.ordinal()]
-                    ),
-                    action
-            );
+    private Object newObjectivePacket(int action, @NotNull String objectiveName, @NotNull String title, int display,
+                                      @Nullable IChatBaseComponent numberFormat) {
+        Object packet = newObjectivePacket.newInstance(newObjective(objectiveName, title, display, numberFormat), action);
+        if (BukkitReflection.getMinorVersion() >= 8 && BukkitReflection.getMinorVersion() < 13) {
+            Objective_RENDER_TYPE.set(packet, healthDisplays[display]);
         }
-        Object nmsPacket = newObjectivePacket.newInstance();
-        Objective_OBJECTIVE_NAME.set(nmsPacket, objectiveName);
-        Objective_DISPLAY_NAME.set(nmsPacket, title);
-        if (BukkitReflection.getMinorVersion() >= 8) {
-            Objective_RENDER_TYPE.set(nmsPacket, healthDisplays[display.ordinal()]);
-        }
-        Objective_METHOD.set(nmsPacket, action);
-        return nmsPacket;
+        return packet;
     }
 
     @Override
@@ -322,111 +155,363 @@ public class PacketScoreboard extends Scoreboard<BukkitTabPlayer> {
     public void registerTeam0(@NotNull String name, @NotNull String prefix, @NotNull String suffix,
                               @NotNull NameVisibility visibility, @NotNull CollisionRule collision,
                               @NotNull Collection<String> players, int options) {
-        Object team = createTeam(name, prefix, suffix, visibility, collision, options);
-        ((Collection<String>)ScoreboardTeam_getPlayerNameSet.invoke(team)).addAll(players);
-        if (BukkitReflection.getMinorVersion() >= 17) {
-            player.sendPacket(TeamPacketConstructor_ofBoolean.invoke(null, team, true));
-        } else {
-            player.sendPacket(newTeamPacket.newInstance(team, 0));
-        }
+        player.sendPacket(teamPacketData.registerTeam(name, prefix, toComponent(prefix), suffix,
+                toComponent(suffix), visibility, collision, players, options));
     }
 
     @Override
     @SneakyThrows
     public void unregisterTeam0(@NotNull String name) {
-        Object team = newScoreboardTeam.newInstance(emptyScoreboard, name);
-        if (BukkitReflection.getMinorVersion() >= 17) {
-            player.sendPacket(TeamPacketConstructor_of.invoke(null, team));
-        } else {
-            player.sendPacket(newTeamPacket.newInstance(team, 1));
-        }
+        player.sendPacket(teamPacketData.unregisterTeam(name));
     }
 
     @Override
     @SneakyThrows
     public void updateTeam0(@NotNull String name, @NotNull String prefix, @NotNull String suffix,
                             @NotNull NameVisibility visibility, @NotNull CollisionRule collision, int options) {
-        Object team = createTeam(name, prefix, suffix, visibility, collision, options);
-        if (BukkitReflection.getMinorVersion() >= 17) {
-            player.sendPacket(TeamPacketConstructor_ofBoolean.invoke(null, team, false));
-        } else {
-            player.sendPacket(newTeamPacket.newInstance(team, 2));
-        }
-    }
-
-    @SneakyThrows
-    private Object createTeam(@NotNull String teamName, @NotNull String prefix, @NotNull String suffix,
-                              @NotNull NameVisibility visibility, @NotNull CollisionRule collision, int options) {
-        Object team = newScoreboardTeam.newInstance(emptyScoreboard, teamName);
-        ScoreboardTeam_setAllowFriendlyFire.invoke(team, (options & 0x1) > 0);
-        ScoreboardTeam_setCanSeeFriendlyInvisibles.invoke(team, (options & 0x2) > 0);
-        if (BukkitReflection.getMinorVersion() >= 13) {
-            ScoreboardTeam_setPrefix.invoke(team, toComponent(prefix));
-            ScoreboardTeam_setSuffix.invoke(team, toComponent(suffix));
-            ScoreboardTeam_setColor.invoke(team, chatFormats[EnumChatFormat.lastColorsOf(prefix).ordinal()]);
-        } else {
-            ScoreboardTeam_setPrefix.invoke(team, prefix);
-            ScoreboardTeam_setSuffix.invoke(team, suffix);
-        }
-        if (BukkitReflection.getMinorVersion() >= 8)
-            ScoreboardTeam_setNameTagVisibility.invoke(team, nameVisibilities[visibility.ordinal()]);
-        if (BukkitReflection.getMinorVersion() >= 9)
-            ScoreboardTeam_setCollisionRule.invoke(team, collisionRules[collision.ordinal()]);
-        return team;
+        player.sendPacket(teamPacketData.updateTeam(name, prefix, toComponent(prefix), suffix,
+                toComponent(suffix), visibility, collision, options));
     }
 
     @Override
+    public void setScore0(@NotNull String objective, @NotNull String scoreHolder, int score,
+                          @Nullable IChatBaseComponent displayName, @Nullable IChatBaseComponent numberFormat) {
+        player.sendPacket(scorePacketData.setScore(objective, scoreHolder, score, toComponent(displayName), toFixedFormat(numberFormat)));
+    }
+
+    @Override
+    public void removeScore0(@NotNull String objective, @NotNull String scoreHolder) {
+        player.sendPacket(scorePacketData.removeScore(objective, scoreHolder));
+    }
+
+    /**
+     * Creates a new Scoreboard Objective with given parameters.
+     *
+     * @param   objectiveName
+     *          Objective name
+     * @param   title
+     *          Objective title
+     * @param   renderType
+     *          Render type
+     * @param   numberFormat
+     *          Default number format (1.20.3+)
+     * @return  Created objective
+     */
     @SneakyThrows
-    public void setScore0(@NotNull String objective, @NotNull String playerName, int score) {
+    public Object newObjective(@NotNull String objectiveName, @NotNull String title, int renderType,
+                               @Nullable IChatBaseComponent numberFormat) {
+        if (BukkitReflection.is1_20_3Plus()) {
+            // 1.20.3+
+            return newScoreboardObjective.newInstance(
+                    emptyScoreboard,
+                    objectiveName,
+                    null, // Criteria
+                    toComponent(title),
+                    healthDisplays[renderType],
+                    false, // Auto update
+                    toFixedFormat(numberFormat)
+            );
+        }
         if (BukkitReflection.getMinorVersion() >= 13) {
-            player.sendPacket(newScorePacket_1_13.newInstance(scoreboardActions[0], objective, playerName, score));
-        } else {
-            Object scoreboardScore = newScoreboardScore.newInstance(emptyScoreboard, newScoreboardObjective(objective), playerName);
-            ScoreboardScore_setScore.invoke(scoreboardScore, score);
-            if (BukkitReflection.getMinorVersion() >= 8) {
-                player.sendPacket(newScorePacket.newInstance(scoreboardScore));
+            // 1.13 - 1.20.2
+            return newScoreboardObjective.newInstance(
+                    emptyScoreboard,
+                    objectiveName,
+                    null, // Criteria
+                    toComponent(title),
+                    healthDisplays[renderType]
+            );
+        }
+        // 1.5 - 1.12.2
+        Object objective = newScoreboardObjective.newInstance(emptyScoreboard, objectiveName, IScoreboardCriteria_dummy);
+        ScoreboardObjective_setDisplayName.invoke(objective, title);
+        return objective;
+    }
+
+    @Nullable
+    private Object toComponent(@NotNull String text) {
+        return toComponent(IChatBaseComponent.optimizedComponent(text));
+    }
+
+    @Nullable
+    private Object toComponent(@Nullable IChatBaseComponent component) {
+        if (component == null || BukkitReflection.getMinorVersion() < 8) return null;
+        return componentCache.get(component, player.getVersion());
+    }
+
+    @Nullable
+    @SneakyThrows
+    private Object toFixedFormat(@Nullable IChatBaseComponent numberFormat) {
+        if (numberFormat == null || newFixedFormat == null) return null;
+        return newFixedFormat.newInstance(toComponent(numberFormat));
+    }
+
+    private static class ScorePacketData {
+
+        private final Constructor<?> newSetScorePacket;
+        private Constructor<?> newResetScorePacket;      // 1.20.3+
+        private Constructor<?> newSetScorePacket_String; // 1.12-
+        private Constructor<?> newScoreboardScore;       // 1.12-
+        private Field SetScorePacket_SCORE;              // 1.12-
+        private Enum<?>[] scoreboardActions;             // 1.20.2-
+
+        @SneakyThrows
+        public ScorePacketData() {
+            Class<?> SetScorePacket = BukkitReflection.getClass(
+                    "network.protocol.game.ClientboundSetScorePacket", // Mojang mapped
+                    "network.protocol.game.PacketPlayOutScoreboardScore", // Bukkit 1.17+
+                    "PacketPlayOutScoreboardScore", // 1.7 - 1.16.5
+                    "Packet207SetScoreboardScore" // 1.5 - 1.6.4
+            );
+            if (BukkitReflection.is1_20_3Plus()) {
+                newResetScorePacket = BukkitReflection.getClass("network.protocol.game.ClientboundResetScorePacket").getConstructor(String.class, String.class);
+                newSetScorePacket = SetScorePacket.getConstructor(String.class, String.class, int.class, Component, NumberFormat);
+            } else if (BukkitReflection.getMinorVersion() >= 13) {
+                Class<?> EnumScoreboardAction = BukkitReflection.getClass("server.ServerScoreboard$Method",
+                        "server.ScoreboardServer$Action", "ScoreboardServer$Action");
+                newSetScorePacket = SetScorePacket.getConstructor(EnumScoreboardAction, String.class, String.class, int.class);
+                scoreboardActions = (Enum<?>[]) EnumScoreboardAction.getMethod("values").invoke(null);
             } else {
-                player.sendPacket(newScorePacket.newInstance(scoreboardScore, 0));
+                Class<?> ScoreboardScore = BukkitReflection.getClass("ScoreboardScore");
+                newSetScorePacket_String = SetScorePacket.getConstructor(String.class);
+                SetScorePacket_SCORE = ReflectionUtils.getFields(SetScorePacket, int.class).get(0);
+                newScoreboardScore = ScoreboardScore.getConstructor(Scoreboard, ScoreboardObjective, String.class);
+                if (BukkitReflection.getMinorVersion() >= 8) {
+                    newSetScorePacket = SetScorePacket.getConstructor(ScoreboardScore);
+                } else {
+                    newSetScorePacket = SetScorePacket.getConstructor(ScoreboardScore, int.class);
+                }
+            }
+        }
+
+        @SneakyThrows
+        public Object setScore(@NotNull String objective, @NotNull String scoreHolder, int score,
+                              @Nullable Object displayName, @Nullable Object numberFormat) {
+            if (BukkitReflection.is1_20_3Plus()) {
+                return newSetScorePacket.newInstance(scoreHolder, objective, score, displayName, numberFormat);
+            } else if (BukkitReflection.getMinorVersion() >= 13) {
+                return newSetScorePacket.newInstance(scoreboardActions[0], objective, scoreHolder, score);
+            } else {
+                Object scoreboardScore = newScoreboardScore.newInstance(
+                        emptyScoreboard,
+                        newScoreboardObjective.newInstance(emptyScoreboard, objective, IScoreboardCriteria_dummy),
+                        scoreHolder
+                );
+                Object packet;
+                if (BukkitReflection.getMinorVersion() >= 8) {
+                    packet = newSetScorePacket.newInstance(scoreboardScore);
+                } else {
+                    packet = newSetScorePacket.newInstance(scoreboardScore, ScoreAction.CHANGE);
+                }
+                SetScorePacket_SCORE.set(packet, score);
+                return packet;
+            }
+        }
+
+        @SneakyThrows
+        public Object removeScore(@NotNull String objective, @NotNull String scoreHolder) {
+            if (BukkitReflection.is1_20_3Plus()) {
+                return newResetScorePacket.newInstance(scoreHolder, objective);
+            } else if (BukkitReflection.getMinorVersion() >= 13) {
+                return newSetScorePacket.newInstance(scoreboardActions[1], objective, scoreHolder, 0);
+            } else {
+                return newSetScorePacket_String.newInstance(scoreHolder);
             }
         }
     }
 
-    @Override
-    @SneakyThrows
-    public void removeScore0(@NotNull String objective, @NotNull String playerName) {
-        if (BukkitReflection.getMinorVersion() >= 13) {
-            player.sendPacket(newScorePacket_1_13.newInstance(scoreboardActions[1], objective, playerName, 0));
-        } else {
-            player.sendPacket(newScorePacket_String.newInstance(playerName));
-        }
-    }
+    public static class TeamPacketData {
 
-    /**
-     * Creates a new Scoreboard Objective with given name.
-     *
-     * @param   objectiveName
-     *          Objective name
-     * @return  NMS Objective
-     */
-    @SneakyThrows
-    public Object newScoreboardObjective(@NotNull String objectiveName) {
-        if (BukkitReflection.getMinorVersion() >= 13) {
-            return newScoreboardObjective.newInstance(
-                    null,
-                    objectiveName,
-                    null,
-                    toComponent(""),
-                    null
+        public Class<?> TeamPacketClass;
+        private Constructor<?> newTeamPacket;
+        private final Constructor<?> newScoreboardTeam;
+        private Method TeamPacketConstructor_of;
+        private Method TeamPacketConstructor_ofBoolean;
+        public Field TeamPacket_NAME;
+        public Field TeamPacket_ACTION;
+        public Field TeamPacket_PLAYERS;
+        private final Method ScoreboardTeam_getPlayerNameSet;
+        private Method ScoreboardTeam_setNameTagVisibility;
+        private Method ScoreboardTeam_setCollisionRule;
+        private final Method ScoreboardTeam_setPrefix;
+        private final Method ScoreboardTeam_setSuffix;
+        private Method ScoreboardTeam_setColor;
+        private final Method ScoreboardTeam_setAllowFriendlyFire;
+        private final Method ScoreboardTeam_setCanSeeFriendlyInvisibles;
+        private final Enum<?>[] chatFormats;
+        private Enum<?>[] nameVisibilities;
+        private Enum<?>[] collisionRules;
+
+        @SneakyThrows
+        public TeamPacketData() {
+            int minorVersion = BukkitReflection.getMinorVersion();
+            Class<?> scoreboardTeam = BukkitReflection.getClass("world.scores.PlayerTeam", "world.scores.ScoreboardTeam", "ScoreboardTeam");
+            Class<?> enumChatFormatClass = BukkitReflection.getClass("ChatFormatting", "EnumChatFormat", "EnumChatFormat");
+            TeamPacketClass = BukkitReflection.getClass(
+                    "network.protocol.game.ClientboundSetPlayerTeamPacket", // Mojang mapped
+                    "network.protocol.game.PacketPlayOutScoreboardTeam", // Bukkit 1.17+
+                    "PacketPlayOutScoreboardTeam", // Bukkit 1.7 - 1.16.5
+                    "Packet209SetScoreboardTeam" // 1.5 - 1.6.4
             );
+            newScoreboardTeam = scoreboardTeam.getConstructor(Scoreboard, String.class);
+            TeamPacket_NAME = ReflectionUtils.getFields(TeamPacketClass, String.class).get(0);
+            TeamPacket_ACTION = ReflectionUtils.getInstanceFields(TeamPacketClass, int.class).get(0);
+            TeamPacket_PLAYERS = ReflectionUtils.getOnlyField(TeamPacketClass, Collection.class);
+            ScoreboardTeam_getPlayerNameSet = ReflectionUtils.getOnlyMethod(scoreboardTeam, Collection.class);
+            chatFormats = (Enum<?>[]) enumChatFormatClass.getMethod("values").invoke(null);
+            ScoreboardTeam_setAllowFriendlyFire = ReflectionUtils.getMethod(
+                    scoreboardTeam,
+                    new String[] {"func_96660_a", "setAllowFriendlyFire", "a", "m_83355_"}, // {Thermos, 1.5.1+, 1.5 & 1.18+, Mohist 1.18.2}
+                    boolean.class
+            );
+            ScoreboardTeam_setCanSeeFriendlyInvisibles = ReflectionUtils.getMethod(
+                    scoreboardTeam,
+                    new String[] {"func_98300_b", "setCanSeeFriendlyInvisibles", "b", "m_83362_", "setSeeFriendlyInvisibles"}, // {Thermos, 1.5.1+, 1.5 & 1.18+, Mohist 1.18.2, 1.20.2+}
+                    boolean.class
+            );
+            if (minorVersion >= 8) {
+                Class<?> enumNameTagVisibility = BukkitReflection.getClass(
+                        "world.scores.Team$Visibility", // Mojang mapped
+                        "world.scores.ScoreboardTeamBase$EnumNameTagVisibility", // Bukkit 1.17+
+                        "ScoreboardTeamBase$EnumNameTagVisibility", // Bukkit 1.8.1 - 1.16.5
+                        "EnumNameTagVisibility" // Bukkit 1.8.0
+                );
+                nameVisibilities = (Enum<?>[]) enumNameTagVisibility.getMethod("values").invoke(null);
+                ScoreboardTeam_setNameTagVisibility = ReflectionUtils.getMethod(
+                        scoreboardTeam,
+                        new String[] {"setNameTagVisibility", "a", "m_83346_"}, // {1.8.1+, 1.8 & 1.18+, Mohist 1.18.2}
+                        enumNameTagVisibility
+                );
+            }
+            if (minorVersion >= 9) {
+                Class<?> enumTeamPush = BukkitReflection.getClass("world.scores.Team$CollisionRule",
+                        "world.scores.ScoreboardTeamBase$EnumTeamPush", "ScoreboardTeamBase$EnumTeamPush");
+                ScoreboardTeam_setCollisionRule = ReflectionUtils.getOnlyMethod(scoreboardTeam, void.class, enumTeamPush);
+                collisionRules = (Enum<?>[]) enumTeamPush.getMethod("values").invoke(null);
+            }
+            if (minorVersion >= 13) {
+                ScoreboardTeam_setColor = ReflectionUtils.getOnlyMethod(scoreboardTeam, void.class, enumChatFormatClass);
+                ScoreboardTeam_setPrefix = ReflectionUtils.getMethod(
+                        scoreboardTeam,
+                        new String[]{"setPrefix", "b", "m_83360_", "setPlayerPrefix"}, // {1.17.1-, 1.18 - 1.20.1, Mohist 1.18.2, 1.20.2+}
+                        Component
+                );
+                ScoreboardTeam_setSuffix = ReflectionUtils.getMethod(
+                        scoreboardTeam,
+                        new String[]{"setSuffix", "c", "m_83365_", "setPlayerSuffix"}, // {1.17.1-, 1.18 - 1.20.1, Mohist 1.18.2, 1.20.2+}
+                        Component
+                );
+            } else {
+                ScoreboardTeam_setPrefix = ReflectionUtils.getMethod(
+                        scoreboardTeam,
+                        new String[] {"func_96666_b", "setPrefix", "b"}, // {Thermos, 1.5.1+, 1.5}
+                        String.class
+                );
+                ScoreboardTeam_setSuffix = ReflectionUtils.getMethod(
+                        scoreboardTeam,
+                        new String[] {"func_96662_c", "setSuffix", "c"}, // {Thermos, 1.5.1+, 1.5}
+                        String.class
+                );
+            }
+            if (minorVersion >= 17) {
+                TeamPacketConstructor_of = ReflectionUtils.getOnlyMethod(TeamPacketClass, TeamPacketClass, scoreboardTeam);
+                TeamPacketConstructor_ofBoolean = ReflectionUtils.getOnlyMethod(TeamPacketClass, TeamPacketClass, scoreboardTeam, boolean.class);
+            } else {
+                newTeamPacket = TeamPacketClass.getConstructor(scoreboardTeam, int.class);
+            }
+        }
+
+        @SneakyThrows
+        public Object registerTeam(@NotNull String name, @NotNull String prefix, @Nullable Object prefixComponent,
+                                   @NotNull String suffix, @Nullable Object suffixComponent,
+                                   @NotNull NameVisibility visibility, @NotNull CollisionRule collision,
+                                   @NotNull Collection<String> players, int options) {
+            Object team = createTeam(name, prefix, prefixComponent, suffix, suffixComponent, visibility, collision, options);
+            ((Collection<String>)ScoreboardTeam_getPlayerNameSet.invoke(team)).addAll(players);
+            if (BukkitReflection.getMinorVersion() >= 17) {
+                return TeamPacketConstructor_ofBoolean.invoke(null, team, true);
+            } else {
+                return newTeamPacket.newInstance(team, TeamAction.CREATE);
+            }
+        }
+
+        @SneakyThrows
+        public Object unregisterTeam(@NotNull String name) {
+            Object team = newScoreboardTeam.newInstance(emptyScoreboard, name);
+            if (BukkitReflection.getMinorVersion() >= 17) {
+                return TeamPacketConstructor_of.invoke(null, team);
+            } else {
+                return newTeamPacket.newInstance(team, TeamAction.REMOVE);
+            }
+        }
+
+        @SneakyThrows
+        public Object updateTeam(@NotNull String name, @NotNull String prefix, @Nullable Object prefixComponent,
+                                 @NotNull String suffix, @Nullable Object suffixComponent,
+                                 @NotNull NameVisibility visibility, @NotNull CollisionRule collision, int options) {
+            Object team = createTeam(name, prefix, prefixComponent, suffix, suffixComponent, visibility, collision, options);
+            if (BukkitReflection.getMinorVersion() >= 17) {
+                return TeamPacketConstructor_ofBoolean.invoke(null, team, false);
+            } else {
+                return newTeamPacket.newInstance(team, TeamAction.UPDATE);
+            }
+        }
+
+        @SneakyThrows
+        private Object createTeam(@NotNull String teamName, @NotNull String prefix, @Nullable Object prefixComponent,
+                                  @NotNull String suffix, @Nullable Object suffixComponent,
+                                  @NotNull NameVisibility visibility, @NotNull CollisionRule collision, int options) {
+            Object team = newScoreboardTeam.newInstance(emptyScoreboard, teamName);
+            ScoreboardTeam_setAllowFriendlyFire.invoke(team, (options & 0x1) > 0);
+            ScoreboardTeam_setCanSeeFriendlyInvisibles.invoke(team, (options & 0x2) > 0);
+            if (BukkitReflection.getMinorVersion() >= 13) {
+                ScoreboardTeam_setPrefix.invoke(team, prefixComponent);
+                ScoreboardTeam_setSuffix.invoke(team, suffixComponent);
+                ScoreboardTeam_setColor.invoke(team, chatFormats[EnumChatFormat.lastColorsOf(prefix).ordinal()]);
+            } else {
+                ScoreboardTeam_setPrefix.invoke(team, prefix);
+                ScoreboardTeam_setSuffix.invoke(team, suffix);
+            }
+            if (BukkitReflection.getMinorVersion() >= 8)
+                ScoreboardTeam_setNameTagVisibility.invoke(team, nameVisibilities[visibility.ordinal()]);
+            if (BukkitReflection.getMinorVersion() >= 9)
+                ScoreboardTeam_setCollisionRule.invoke(team, collisionRules[collision.ordinal()]);
+            return team;
         }
-        return newScoreboardObjective.newInstance(
-                null,
-                objectiveName,
-                IScoreboardCriteria_self.get(null)
-        );
     }
 
-    private Object toComponent(String text) {
-        return player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(text), player.getVersion());
+    public static class DisplayPacketData {
+
+        public final Class<?> DisplayObjectiveClass;
+        private final Constructor<?> newDisplayObjective;
+        public final Field DisplayObjective_POSITION;
+        public final Field DisplayObjective_OBJECTIVE_NAME;
+        private final Object[] displaySlots;
+
+        @SneakyThrows
+        public DisplayPacketData() {
+            DisplayObjectiveClass = BukkitReflection.getClass(
+                    "network.protocol.game.ClientboundSetDisplayObjectivePacket", // Mojang mapped
+                    "network.protocol.game.PacketPlayOutScoreboardDisplayObjective", // Bukkit 1.17+
+                    "PacketPlayOutScoreboardDisplayObjective", // Bukkit 1.7 - 1.16.5
+                    "Packet208SetScoreboardDisplayObjective" // Bukkit 1.5 - 1.6.4
+            );
+            DisplayObjective_OBJECTIVE_NAME = ReflectionUtils.getOnlyField(DisplayObjectiveClass, String.class);
+            if (BukkitReflection.is1_20_2Plus()) {
+                Class<?> DisplaySlot = BukkitReflection.getClass("world.scores.DisplaySlot");
+                displaySlots = (Object[]) DisplaySlot.getDeclaredMethod("values").invoke(null);
+                DisplayObjective_POSITION = ReflectionUtils.getOnlyField(DisplayObjectiveClass, DisplaySlot);
+                newDisplayObjective = DisplayObjectiveClass.getConstructor(DisplaySlot, ScoreboardObjective);
+            } else {
+                displaySlots = new Object[]{0, 1, 2};
+                DisplayObjective_POSITION = ReflectionUtils.getOnlyField(DisplayObjectiveClass, int.class);
+                newDisplayObjective = DisplayObjectiveClass.getConstructor(int.class, ScoreboardObjective);
+            }
+        }
+
+        @SneakyThrows
+        public Object setDisplaySlot(int slot, @NotNull Object objective) {
+            return newDisplayObjective.newInstance(displaySlots[slot], objective);
+        }
     }
 }

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/scoreboard/PaperScoreboard.java

@@ -32,8 +32,8 @@ public class PaperScoreboard extends BukkitScoreboard {
     }
 
     @Override
-    public void newObjective(String objectiveName, String criteria, String title, @NotNull HealthDisplay display) {
-        scoreboard.registerNewObjective(objectiveName, criteria, toAdventure(title), RenderType.valueOf(display.name()));
+    public void newObjective(String objectiveName, String criteria, String title, int display) {
+        scoreboard.registerNewObjective(objectiveName, criteria, toAdventure(title), RenderType.values()[display]);
     }
 
     @Override

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/scoreboard/ScoreboardLoader.java

@@ -0,0 +1,45 @@
+package me.neznamy.tab.platforms.bukkit.scoreboard;
+
+import lombok.Getter;
+import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
+import me.neznamy.tab.platforms.bukkit.nms.PacketSender;
+import me.neznamy.tab.shared.chat.EnumChatFormat;
+import me.neznamy.tab.shared.platform.Scoreboard;
+import org.bukkit.Bukkit;
+
+import java.util.function.Function;
+
+public class ScoreboardLoader {
+
+    /** Instance function */
+    @Getter
+    private static Function<BukkitTabPlayer, Scoreboard<BukkitTabPlayer>> instance;
+
+    /**
+     * Finds the best available instance for current server software.
+     */
+    public static void findInstance() {
+        if (PacketScoreboard.isAvailable() && PacketSender.isAvailable()) {
+            instance = PacketScoreboard::new;
+        } else if (PaperScoreboard.isAvailable()) {
+            instance = PaperScoreboard::new;
+            sendMessage("Paper");
+        } else if (BukkitScoreboard.isAvailable()) {
+            instance = BukkitScoreboard::new;
+            sendMessage("Bukkit");
+        } else {
+            instance = NullScoreboard::new;
+            Bukkit.getConsoleSender().sendMessage(EnumChatFormat.RED.getFormat() + "[TAB] Failed to initialize NMS fields for " +
+                    "Scoreboards due to a compatibility error. No fallback solution was found either. This will " +
+                    "result in the features not working. " +
+                    "Please update the plugin a to version with native support for your server version to unlock the features.");
+        }
+    }
+
+    private static void sendMessage(String implementationName) {
+        Bukkit.getConsoleSender().sendMessage(EnumChatFormat.RED.getFormat() + "[TAB] Failed to initialize NMS fields for " +
+                "Scoreboards due to a compatibility error. Using fallback solution using " + implementationName + " API. " +
+                "This may result in features not working properly, mainly compatibility with other plugins. " +
+                "Please update the plugin to a version with native support for your server version for optimal experience.");
+    }
+}

bukkit/src/main/resources/plugin.yml

@@ -7,7 +7,7 @@ load: POSTWORLD
 author: @author@
 website: "@website@"
 depend: []
-softdepend: [PlaceholderAPI, LuckPerms, LibsDisguises, ViaVersion, ViaRewind, floodgate]
+softdepend: [PlaceholderAPI, LuckPerms, LibsDisguises, ViaVersion, ViaRewind, floodgate, Vault]
 loadbefore: []
 prefix: TAB
 libraries: []
@@ -49,9 +49,6 @@ permissions:
   tab.change.*:
     description: Allows player to change property using command
     default: op
-  tab.width:
-    description: Allows player to run /tab width
-    default: op
   tab.announce.bar:
     description: Allows player to run /tab announce bar
     default: op

bungeecord/build.gradle.kts

@@ -1,7 +1,7 @@
 dependencies {
     implementation(projects.shared)
     implementation("org.bstats:bstats-bungeecord:3.0.1")
-    compileOnly("net.md-5:bungeecord-proxy:1.20-R0.1-SNAPSHOT")
+    compileOnly("net.md-5:bungeecord-proxy:1.20-R0.2-SNAPSHOT")
     compileOnly("com.github.limework.redisbungee:RedisBungee-Bungee:0.11.0")
     compileOnly("com.github.LeonMangler:PremiumVanishAPI:2.8.8")
 }

bungeecord/src/main/java/me/neznamy/tab/platforms/bungeecord/BungeeBossBar.java

@@ -1,7 +1,8 @@
 package me.neznamy.tab.platforms.bungeecord;
 
 import lombok.RequiredArgsConstructor;
-import me.neznamy.tab.shared.platform.bossbar.BossBar;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.platform.BossBar;
 import me.neznamy.tab.api.bossbar.BarColor;
 import me.neznamy.tab.api.bossbar.BarStyle;
 import org.jetbrains.annotations.NotNull;
@@ -34,7 +35,7 @@ public class BungeeBossBar implements BossBar {
 
         net.md_5.bungee.protocol.packet.BossBar packet = new net.md_5.bungee.protocol.packet.BossBar(id, 0);
         packet.setHealth(progress);
-        BungeeMultiVersion.setTitle(packet, title, player.getVersion());
+        packet.setTitle(player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(title), player.getVersion()));
         packet.setColor(color.ordinal());
         packet.setDivision(style.ordinal());
         player.sendPacket(packet);
@@ -48,7 +49,7 @@ public class BungeeBossBar implements BossBar {
         if (player.getVersion().getMinorVersion() < 9) return;
 
         net.md_5.bungee.protocol.packet.BossBar packet = new net.md_5.bungee.protocol.packet.BossBar(id, 3);
-        BungeeMultiVersion.setTitle(packet, title, player.getVersion());
+        packet.setTitle(player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(title), player.getVersion()));
         player.sendPacket(packet);
     }
 

bungeecord/src/main/java/me/neznamy/tab/platforms/bungeecord/BungeeEventListener.java

@@ -28,13 +28,20 @@ public class BungeeEventListener extends EventListener<ProxiedPlayer> implements
     public void onSwitch(ServerSwitchEvent e) {
         TAB tab = TAB.getInstance();
         if (tab.isPluginDisabled()) return;
+
+        // Avoid 1.20.3 client crash on scoreboard packets, do it sync to prevent packet being sent after event, but before processing
+        TabPlayer p = tab.getPlayer(e.getPlayer().getUniqueId());
+        if (p != null && p.getVersion().getNetworkId() >= ProtocolVersion.V1_20_3.getNetworkId()) {
+            p.getScoreboard().freeze();
+        }
+
         tab.getCPUManager().runTask(() -> {
             TabPlayer player = tab.getPlayer(e.getPlayer().getUniqueId());
             if (player == null) {
                 player = createPlayer(e.getPlayer());
 
-                // I don't think this is actually needed, but someone said it fixed geyser warn in console
-                // Doing this won't hurt, so whatever
+                // Things will get cleared immediately after, so no point in sending it, also someone said it fixed some warn from Geyser
+                // Sending these packets before login packet will also crash the client on 1.20.3
                 if (player.getVersion().getNetworkId() >= ProtocolVersion.V1_20_2.getNetworkId()) {
                     player.getScoreboard().freeze();
                 }

bungeecord/src/main/java/me/neznamy/tab/platforms/bungeecord/BungeeMultiVersion.java

@@ -1,200 +0,0 @@
-package me.neznamy.tab.platforms.bungeecord;
-
-import lombok.SneakyThrows;
-import me.neznamy.tab.shared.ProtocolVersion;
-import me.neznamy.tab.shared.TAB;
-import me.neznamy.tab.shared.chat.ChatModifier;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
-import me.neznamy.tab.shared.util.ReflectionUtils;
-import net.md_5.bungee.UserConnection;
-import net.md_5.bungee.api.ChatColor;
-import net.md_5.bungee.api.chat.BaseComponent;
-import net.md_5.bungee.api.chat.TextComponent;
-import net.md_5.bungee.protocol.DefinedPacket;
-import net.md_5.bungee.protocol.packet.*;
-import net.md_5.bungee.protocol.packet.PlayerListItem.Item;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-import java.lang.reflect.InvocationTargetException;
-import java.util.stream.Collectors;
-
-public class BungeeMultiVersion {
-
-    /**
-     * Flag tracking if the current BungeeCord version contains changes made in build 1732.
-     * This build changes "ScoreboardDisplay" field "position" from "byte" to "int".
-     */
-    private static final boolean b1732Plus = ReflectionUtils.getFields(ScoreboardDisplay.class, int.class).size() > 0;
-
-    /**
-     * Flag tracking if the current BungeeCord version contains changes made in build 1738.
-     * This build adds "sendPacketQueued" method to UserConnection class.
-     */
-    private static final boolean b1738Plus = ReflectionUtils.methodExists(UserConnection.class, "sendPacketQueued", DefinedPacket.class);
-
-    /**
-     * Flag tracking if the current BungeeCord version contains changes made in build 1760.
-     * This build changes all packet fields for displaying information from String to BaseComponent.
-     */
-    private static final boolean b1760Plus = ReflectionUtils.methodExists(BossBar.class, "setTitle", BaseComponent.class);
-
-    @SneakyThrows
-    @NotNull
-    public static ScoreboardDisplay newScoreboardDisplay(int position, @NotNull String name) {
-        if (b1732Plus) {
-            return ScoreboardDisplay.class.getConstructor(int.class, String.class).newInstance(position, name);
-        } else {
-            return new ScoreboardDisplay((byte) position, name);
-        }
-    }
-
-    @SneakyThrows
-    public static void sendPacket(@NotNull BungeeTabPlayer player, @NotNull DefinedPacket packet) {
-        if (b1738Plus) {
-            try {
-                UserConnection.class.getDeclaredMethod("sendPacketQueued", DefinedPacket.class).invoke(player.getPlayer(), packet);
-            } catch (InvocationTargetException BungeeCordBug) { // Since we use reflection we must catch this one
-                // java.lang.NullPointerException: Cannot invoke "net.md_5.bungee.protocol.MinecraftEncoder.getProtocol()" because the return value of "io.netty.channel.ChannelPipeline.get(java.lang.Class)" is null
-                //        at net.md_5.bungee.netty.ChannelWrapper.getEncodeProtocol(ChannelWrapper.java:51)
-                //        at net.md_5.bungee.UserConnection.sendPacketQueued(UserConnection.java:194)
-                if (TAB.getInstance().getConfiguration().isDebugMode()) {
-                    TAB.getInstance().getErrorManager().printError("Failed to deliver packet to player " + player.getName() +
-                            " (online = " + player.getPlayer().isConnected() + "): " + packet, BungeeCordBug);
-                }
-            }
-        } else {
-            player.getPlayer().unsafe().sendPacket(packet);
-        }
-    }
-
-    @SneakyThrows
-    public static void setDisplayName(@NotNull Item item, @NotNull IChatBaseComponent displayName, @NotNull ProtocolVersion version) {
-        if (b1760Plus) {
-            Item.class.getMethod("setDisplayName", BaseComponent.class).invoke(item, toComponent(displayName, version));
-        } else {
-            item.setDisplayName(displayName.toString(version));
-        }
-    }
-
-    @SneakyThrows
-    @NotNull
-    public static PlayerListHeaderFooter newPlayerListHeaderFooter(@NotNull IChatBaseComponent header,
-                                                                   @NotNull IChatBaseComponent footer, ProtocolVersion version) {
-        if (b1760Plus) {
-            return PlayerListHeaderFooter.class.getConstructor(BaseComponent.class, BaseComponent.class).newInstance(
-                    toComponent(header, version),
-                    toComponent(footer, version)
-            );
-        } else {
-            return new PlayerListHeaderFooter(
-                    header.toString(version),
-                    footer.toString(version)
-            );
-        }
-    }
-
-    @SneakyThrows
-    public static void setTitle(@NotNull BossBar bossBar, @NotNull String title, @NotNull ProtocolVersion version) {
-        if (b1760Plus) {
-            BossBar.class.getMethod("setTitle", BaseComponent.class).invoke(bossBar, toComponent(IChatBaseComponent.optimizedComponent(title), version));
-        } else {
-            bossBar.setTitle(IChatBaseComponent.optimizedComponent(title).toString(version));
-        }
-    }
-
-    @NotNull
-    @SneakyThrows
-    public static ScoreboardObjective newScoreboardObjective(@NotNull String objective, @NotNull String title,
-                                                             @Nullable ScoreboardObjective.HealthDisplay healthDisplay, byte action,
-                                                             @NotNull ProtocolVersion version) {
-        if (b1760Plus) {
-            return ScoreboardObjective.class
-                    .getConstructor(String.class, BaseComponent.class, ScoreboardObjective.HealthDisplay.class, byte.class)
-                    .newInstance(objective, toComponent(IChatBaseComponent.optimizedComponent(title), version), healthDisplay, action);
-        } else {
-            return new ScoreboardObjective(objective, jsonOrRaw(title, version), healthDisplay, action);
-        }
-    }
-
-    @NotNull
-    @SneakyThrows
-    public static Team newTeam(@NotNull String name, byte mode, @NotNull String prefix, @NotNull String suffix,
-                               @NotNull String nameTagVisibility, @NotNull String collisionRule, int color,
-                               byte options, @Nullable String[] players, @NotNull ProtocolVersion version) {
-        if (b1760Plus) {
-            return Team.class.getConstructor(String.class, byte.class, BaseComponent.class, BaseComponent.class,
-                    BaseComponent.class, String.class, String.class, int.class, byte.class, String[].class)
-                    .newInstance(
-                            name,
-                            mode,
-                            toComponent(IChatBaseComponent.optimizedComponent(name), version),
-                            toComponent(IChatBaseComponent.optimizedComponent(prefix), version),
-                            toComponent(IChatBaseComponent.optimizedComponent(suffix), version),
-                            nameTagVisibility,
-                            collisionRule,
-                            color,
-                            options,
-                            players
-                    );
-        } else {
-            return new Team(
-                    name,
-                    mode,
-                    jsonOrRaw(name, version),
-                    jsonOrRaw(prefix, version),
-                    jsonOrRaw(suffix, version),
-                    nameTagVisibility,
-                    collisionRule,
-                    color,
-                    options,
-                    players
-            );
-        }
-    }
-
-    /**
-     * If player's version is 1.13+, creates a component from given text and returns
-     * it as a serialized component, which BungeeCord uses.
-     * <p>
-     * If player's version is 1.12-, the text is returned
-     *
-     * @param   text
-     *          Text to convert
-     * @param   version
-     *          Protocol version to create json string for
-     * @return  serialized component for 1.13+ clients, cut string for 1.12-
-     */
-    @NotNull
-    private static String jsonOrRaw(@NotNull String text, @NotNull ProtocolVersion version) {
-        if (version.getMinorVersion() >= 13) {
-            return IChatBaseComponent.optimizedComponent(text).toString(version);
-        } else {
-            return text;
-        }
-    }
-
-    /**
-     * Converts internal component class to platform's component class
-     *
-     * @param   component
-     *          Component to convert
-     * @param   version
-     *          Game version to convert component for
-     * @return  Converted component
-     */
-    private static BaseComponent toComponent(@NotNull IChatBaseComponent component, @NotNull ProtocolVersion version) {
-        TextComponent textComponent = new TextComponent(component.getText());
-        ChatModifier modifier = component.getModifier();
-        if (modifier.getColor() != null) textComponent.setColor(ChatColor.of(
-                modifier.getColor().toString(version.getMinorVersion() >= 16)));
-        if (modifier.isBold()) textComponent.setBold(true);
-        if (modifier.isItalic()) textComponent.setItalic(true);
-        if (modifier.isObfuscated()) textComponent.setObfuscated(true);
-        if (modifier.isStrikethrough()) textComponent.setStrikethrough(true);
-        if (modifier.isUnderlined()) textComponent.setUnderlined(true);
-        if (!component.getExtra().isEmpty()) textComponent.setExtra(
-                component.getExtra().stream().map(c -> toComponent(c, version)).collect(Collectors.toList()));
-        return textComponent;
-    }
-}

bungeecord/src/main/java/me/neznamy/tab/platforms/bungeecord/BungeePipelineInjector.java

@@ -56,7 +56,7 @@ public class BungeePipelineInjector extends NettyPipelineInjector {
         try {
             (wrapperField = InitialHandler.class.getDeclaredField("ch")).setAccessible(true);
             directionData = ReflectionUtils.setAccessible(Protocol.class.getDeclaredField("TO_CLIENT")).get(Protocol.GAME);
-            getId = ReflectionUtils.setAccessible(directionData.getClass().getDeclaredMethod("getId", Class.class, int.class));
+            getId = ReflectionUtils.setAccessible(Protocol.DirectionData.class.getDeclaredMethod("getId", Class.class, int.class));
         } catch (ReflectiveOperationException exception) {
             TAB.getInstance().getErrorManager().criticalError("Failed to initialize bungee internal fields", exception);
         }
@@ -77,25 +77,16 @@ public class BungeePipelineInjector extends NettyPipelineInjector {
 
     @Override
     @Nullable
+    @SneakyThrows
     protected Channel getChannel(@NotNull TabPlayer player) {
         if (wrapperField == null) return null;
-        final BungeeTabPlayer bungee = (BungeeTabPlayer) player;
-        try {
-            return ((ChannelWrapper) wrapperField.get(bungee.getPlayer().getPendingConnection())).getHandle();
-        } catch (IllegalAccessException exception) {
-            TAB.getInstance().getErrorManager().criticalError("Failed to get channel of " + bungee.getPlayer().getName(), exception);
-        }
-        return null;
+        return ((ChannelWrapper) wrapperField.get(((BungeeTabPlayer) player).getPlayer().getPendingConnection())).getHandle();
     }
 
     @Override
-    @SneakyThrows
     public void onDisplayObjective(@NotNull TabPlayer player, @NotNull Object packet) {
-        TAB.getInstance().getFeatureManager().onDisplayObjective(
-                player,
-                ((Number) ScoreboardDisplay.class.getMethod("getPosition").invoke(packet)).intValue(),
-                ((ScoreboardDisplay) packet).getName()
-        );
+        TAB.getInstance().getFeatureManager().onDisplayObjective(player,
+                ((ScoreboardDisplay)packet).getPosition(), ((ScoreboardDisplay) packet).getName());
     }
 
     @Override
@@ -158,26 +149,12 @@ public class BungeePipelineInjector extends NettyPipelineInjector {
 
     @Override
     public void onPlayerInfo(@NotNull TabPlayer receiver, @NotNull Object packet) {
-        if (packet instanceof PlayerListItemUpdate) {
-            PlayerListItemUpdate update = (PlayerListItemUpdate) packet;
-            for (PlayerListItem.Item item : update.getItems()) {
-                if (update.getActions().contains(PlayerListItemUpdate.Action.UPDATE_DISPLAY_NAME)) {
-                    IChatBaseComponent newDisplayName = TAB.getInstance().getFeatureManager().onDisplayNameChange(receiver, item.getUuid());
-                    if (newDisplayName != null) BungeeMultiVersion.setDisplayName(item, newDisplayName, receiver.getVersion());
-                }
-                if (update.getActions().contains(PlayerListItemUpdate.Action.UPDATE_LATENCY)) {
-                    item.setPing(TAB.getInstance().getFeatureManager().onLatencyChange(receiver, item.getUuid(), item.getPing()));
-                }
-                if (update.getActions().contains(PlayerListItemUpdate.Action.ADD_PLAYER)) {
-                    TAB.getInstance().getFeatureManager().onEntryAdd(receiver, item.getUuid(), item.getUsername());
-                }
-            }
-        } else {
+        if (packet instanceof PlayerListItem) {
             PlayerListItem listItem = (PlayerListItem) packet;
             for (PlayerListItem.Item item : listItem.getItems()) {
                 if (listItem.getAction() == PlayerListItem.Action.UPDATE_DISPLAY_NAME || listItem.getAction() == PlayerListItem.Action.ADD_PLAYER) {
                     IChatBaseComponent newDisplayName = TAB.getInstance().getFeatureManager().onDisplayNameChange(receiver, item.getUuid());
-                    if (newDisplayName != null) BungeeMultiVersion.setDisplayName(item, newDisplayName, receiver.getVersion());
+                    if (newDisplayName != null) item.setDisplayName(((BungeeTabPlayer)receiver).getPlatform().toComponent(newDisplayName, receiver.getVersion()));
                 }
                 if (listItem.getAction() == PlayerListItem.Action.UPDATE_LATENCY || listItem.getAction() == PlayerListItem.Action.ADD_PLAYER) {
                     item.setPing(TAB.getInstance().getFeatureManager().onLatencyChange(receiver, item.getUuid(), item.getPing()));
@@ -186,6 +163,20 @@ public class BungeePipelineInjector extends NettyPipelineInjector {
                     TAB.getInstance().getFeatureManager().onEntryAdd(receiver, item.getUuid(), item.getUsername());
                 }
             }
+        } else {
+            PlayerListItemUpdate update = (PlayerListItemUpdate) packet;
+            for (PlayerListItem.Item item : update.getItems()) {
+                if (update.getActions().contains(PlayerListItemUpdate.Action.UPDATE_DISPLAY_NAME)) {
+                    IChatBaseComponent newDisplayName = TAB.getInstance().getFeatureManager().onDisplayNameChange(receiver, item.getUuid());
+                    if (newDisplayName != null) item.setDisplayName(((BungeeTabPlayer)receiver).getPlatform().toComponent(newDisplayName, receiver.getVersion()));
+                }
+                if (update.getActions().contains(PlayerListItemUpdate.Action.UPDATE_LATENCY)) {
+                    item.setPing(TAB.getInstance().getFeatureManager().onLatencyChange(receiver, item.getUuid(), item.getPing()));
+                }
+                if (update.getActions().contains(PlayerListItemUpdate.Action.ADD_PLAYER)) {
+                    TAB.getInstance().getFeatureManager().onEntryAdd(receiver, item.getUuid(), item.getUsername());
+                }
+            }
         }
     }
 
@@ -236,10 +227,15 @@ public class BungeePipelineInjector extends NettyPipelineInjector {
          */
         @NotNull
         private Object deserialize(@NotNull ByteBuf buf) {
+            if (wrapperField == null) return buf;
             int marker = buf.readerIndex();
             try {
                 int packetId = buf.readByte();
                 for (int i=0; i<extraPacketClasses.length; i++) {
+                    ChannelWrapper ch = (ChannelWrapper) wrapperField.get(((BungeeTabPlayer) player).getPlayer().getPendingConnection());
+                    if (!ch.getEncodeProtocol().TO_CLIENT.hasPacket(extraPacketClasses[i], ((ProxiedPlayer)player.getPlayer()).getPendingConnection().getVersion())) {
+                        continue;
+                    }
                     if (packetId == getPacketId(((BungeeTabPlayer)player).getPlayer().getPendingConnection().getVersion(), extraPacketClasses[i])) {
                         DefinedPacket packet = extraPacketSuppliers[i].get();
                         packet.read(buf, null, ((ProxiedPlayer)player.getPlayer()).getPendingConnection().getVersion());
@@ -263,15 +259,10 @@ public class BungeePipelineInjector extends NettyPipelineInjector {
          *          packet class
          * @return  packet ID
          */
+        @SneakyThrows
         private int getPacketId(int protocolVersion, @NotNull Class<? extends DefinedPacket> clazz) {
             if (getId == null) return -1;
-            try {
-                return (int) getId.invoke(directionData, clazz, protocolVersion);
-            } catch (ReflectiveOperationException e) {
-                TAB.getInstance().getErrorManager().printError("Failed to get packet id for packet " + clazz +
-                        " with client version " + protocolVersion, e);
-                return -1;
-            }
+            return (int) getId.invoke(directionData, clazz, protocolVersion);
         }
     }
 }

bungeecord/src/main/java/me/neznamy/tab/platforms/bungeecord/BungeePlatform.java

@@ -1,18 +1,28 @@
 package me.neznamy.tab.platforms.bungeecord;
 
 import com.imaginarycode.minecraft.redisbungee.RedisBungeeAPI;
+import de.myzelyam.api.vanish.BungeeVanishAPI;
 import lombok.AllArgsConstructor;
+import lombok.Getter;
 import me.neznamy.tab.platforms.bungeecord.features.BungeeRedisSupport;
+import me.neznamy.tab.shared.ProtocolVersion;
 import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.TabConstants;
+import me.neznamy.tab.shared.chat.ChatModifier;
 import me.neznamy.tab.shared.chat.EnumChatFormat;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
 import me.neznamy.tab.shared.features.injection.PipelineInjector;
 import me.neznamy.tab.shared.features.redis.RedisSupport;
 import me.neznamy.tab.shared.hook.ViaVersionHook;
+import me.neznamy.tab.shared.platform.TabPlayer;
 import me.neznamy.tab.shared.proxy.ProxyPlatform;
+import me.neznamy.tab.shared.util.ComponentCache;
 import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.md_5.bungee.api.ChatColor;
 import net.md_5.bungee.api.ProxyServer;
+import net.md_5.bungee.api.chat.BaseComponent;
+import net.md_5.bungee.api.chat.ClickEvent;
+import net.md_5.bungee.api.chat.TextComponent;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
 import org.bstats.bungeecord.Metrics;
 import org.bstats.charts.SimplePie;
@@ -20,6 +30,7 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.io.File;
+import java.util.stream.Collectors;
 
 /**
  * BungeeCord implementation of Platform
@@ -27,6 +38,13 @@ import java.io.File;
 @AllArgsConstructor
 public class BungeePlatform extends ProxyPlatform {
 
+    /** Flag tracking plugin presence */
+    @Getter
+    private final boolean premiumVanish = ProxyServer.getInstance().getPluginManager().getPlugin("PremiumVanish") != null;
+
+    /** Component cache for better performance */
+    private final ComponentCache<IChatBaseComponent, BaseComponent> cache = new ComponentCache<>(1000, this::toComponent0);
+
     @NotNull
     private final BungeeTAB plugin;
 
@@ -96,4 +114,62 @@ public class BungeePlatform extends ProxyPlatform {
     public void registerChannel() {
         ProxyServer.getInstance().registerChannel(TabConstants.PLUGIN_MESSAGE_CHANNEL_NAME);
     }
+
+    @Override
+    public boolean canSee(@NotNull TabPlayer viewer, @NotNull TabPlayer target) {
+        //noinspection ConstantConditions
+        if (premiumVanish && BungeeVanishAPI.canSee(
+                ((BungeeTabPlayer)viewer).getPlayer(),
+                ((BungeeTabPlayer)target).getPlayer())) return true;
+        return super.canSee(viewer, target);
+    }
+
+    /**
+     * Converts internal component class to platform's component class. If the component is
+     * present in the cache, it is taken from it.
+     *
+     * @param   component
+     *          Component to convert
+     * @param   version
+     *          Game version to convert component for
+     * @return  Converted component
+     */
+    public BaseComponent toComponent(@NotNull IChatBaseComponent component, @NotNull ProtocolVersion version) {
+        return cache.get(component, version);
+    }
+
+    /**
+     * Converts internal component class to platform's component class
+     *
+     * @param   component
+     *          Component to convert
+     * @param   version
+     *          Game version to convert component for
+     * @return  Converted component
+     */
+    private BaseComponent toComponent0(@NotNull IChatBaseComponent component, @NotNull ProtocolVersion version) {
+        TextComponent textComponent = new TextComponent(component.getText());
+        ChatModifier modifier = component.getModifier();
+        if (modifier.getColor() != null) textComponent.setColor(ChatColor.of(
+                modifier.getColor().toString(version.getMinorVersion() >= 16)));
+
+        if (modifier.isBold()) textComponent.setBold(true);
+        if (modifier.isItalic()) textComponent.setItalic(true);
+        if (modifier.isObfuscated()) textComponent.setObfuscated(true);
+        if (modifier.isStrikethrough()) textComponent.setStrikethrough(true);
+        if (modifier.isUnderlined()) textComponent.setUnderlined(true);
+
+        textComponent.setFont(modifier.getFont());
+
+        if (modifier.getClickEvent() != null) {
+            textComponent.setClickEvent(new ClickEvent(
+                    ClickEvent.Action.valueOf(modifier.getClickEvent().getAction().name()),
+                    modifier.getClickEvent().getValue()
+            ));
+        }
+
+        if (!component.getExtra().isEmpty()) textComponent.setExtra(
+                component.getExtra().stream().map(c -> toComponent(c, version)).collect(Collectors.toList()));
+        return textComponent;
+    }
 }

bungeecord/src/main/java/me/neznamy/tab/platforms/bungeecord/BungeeScoreboard.java

@@ -1,12 +1,15 @@
 package me.neznamy.tab.platforms.bungeecord;
 
-import lombok.SneakyThrows;
+import me.neznamy.tab.shared.ProtocolVersion;
 import me.neznamy.tab.shared.chat.EnumChatFormat;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
 import me.neznamy.tab.shared.platform.Scoreboard;
-import net.md_5.bungee.protocol.packet.ScoreboardObjective;
-import net.md_5.bungee.protocol.packet.ScoreboardScore;
-import net.md_5.bungee.protocol.packet.Team;
+import net.md_5.bungee.api.chat.BaseComponent;
+import net.md_5.bungee.protocol.Either;
+import net.md_5.bungee.protocol.NumberFormat;
+import net.md_5.bungee.protocol.packet.*;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.Collection;
 
@@ -22,41 +25,44 @@ public class BungeeScoreboard extends Scoreboard<BungeeTabPlayer> {
     }
 
     @Override
-    @SneakyThrows
-    public void setDisplaySlot(@NotNull DisplaySlot slot, @NotNull String objective) {
-        player.sendPacket(BungeeMultiVersion.newScoreboardDisplay(slot.ordinal(), objective));
+    public void setDisplaySlot0(int slot, @NotNull String objective) {
+        player.sendPacket(new ScoreboardDisplay(slot, objective));
     }
 
     @Override
-    public void registerObjective0(@NotNull String objectiveName, @NotNull String title, @NotNull HealthDisplay display) {
-        player.sendPacket(BungeeMultiVersion.newScoreboardObjective(
+    public void registerObjective0(@NotNull String objectiveName, @NotNull String title, int display,
+                                   @Nullable IChatBaseComponent numberFormat) {
+        player.sendPacket(new ScoreboardObjective(
                 objectiveName,
-                title,
-                ScoreboardObjective.HealthDisplay.valueOf(display.name()),
-                (byte) 0,
-                player.getVersion()
+                either(title),
+                ScoreboardObjective.HealthDisplay.values()[display],
+                (byte) ObjectiveAction.REGISTER,
+                numberFormat == null ? null : new NumberFormat(NumberFormat.Type.FIXED,
+                        player.getPlatform().toComponent(numberFormat, player.getVersion()))
         ));
     }
 
     @Override
     public void unregisterObjective0(@NotNull String objectiveName) {
-        player.sendPacket(BungeeMultiVersion.newScoreboardObjective(
+        player.sendPacket(new ScoreboardObjective(
                 objectiveName,
-                "", // Empty value instead of null to prevent NPE kick on 1.7
+                either(""), // Empty value instead of null to prevent NPE kick on 1.7
                 null,
-                (byte) 1,
-                player.getVersion()
+                (byte) ObjectiveAction.UNREGISTER,
+                null
         ));
     }
 
     @Override
-    public void updateObjective0(@NotNull String objectiveName, @NotNull String title, @NotNull HealthDisplay display) {
-        player.sendPacket(BungeeMultiVersion.newScoreboardObjective(
+    public void updateObjective0(@NotNull String objectiveName, @NotNull String title, int display,
+                                 @Nullable IChatBaseComponent numberFormat) {
+        player.sendPacket(new ScoreboardObjective(
                 objectiveName,
-                title,
-                ScoreboardObjective.HealthDisplay.valueOf(display.name()),
-                (byte) 2,
-                player.getVersion()
+                either(title),
+                ScoreboardObjective.HealthDisplay.values()[display],
+                (byte) ObjectiveAction.UPDATE,
+                numberFormat == null ? null : new NumberFormat(NumberFormat.Type.FIXED,
+                        player.getPlatform().toComponent(numberFormat, player.getVersion()))
         ));
     }
 
@@ -68,17 +74,17 @@ public class BungeeScoreboard extends Scoreboard<BungeeTabPlayer> {
         if (player.getVersion().getMinorVersion() >= 13) {
             color = EnumChatFormat.lastColorsOf(prefix).ordinal();
         }
-        player.sendPacket(BungeeMultiVersion.newTeam(
+        player.sendPacket(new Team(
                 name,
-                (byte) 0,
-                prefix,
-                suffix,
+                (byte) TeamAction.CREATE,
+                either(name),
+                either(prefix),
+                either(suffix),
                 visibility.toString(),
                 collision.toString(),
                 color,
                 (byte)options,
-                players.toArray(new String[0]),
-                player.getVersion()
+                players.toArray(new String[0])
         ));
     }
 
@@ -94,27 +100,48 @@ public class BungeeScoreboard extends Scoreboard<BungeeTabPlayer> {
         if (player.getVersion().getMinorVersion() >= 13) {
             color = EnumChatFormat.lastColorsOf(prefix).ordinal();
         }
-        player.sendPacket(BungeeMultiVersion.newTeam(
+        player.sendPacket(new Team(
                 name,
-                (byte) 2,
-                prefix,
-                suffix,
+                (byte) TeamAction.UPDATE,
+                either(name),
+                either(prefix),
+                either(suffix),
                 visibility.toString(),
                 collision.toString(),
                 color,
                 (byte)options,
-                null,
-                player.getVersion()
+                null
         ));
     }
 
     @Override
-    public void setScore0(@NotNull String objective, @NotNull String playerName, int score) {
-        player.sendPacket(new ScoreboardScore(playerName, (byte) 0, objective, score));
+    public void setScore0(@NotNull String objective, @NotNull String scoreHolder, int score,
+                          @Nullable IChatBaseComponent displayName, @Nullable IChatBaseComponent numberFormat) {
+        player.sendPacket(new ScoreboardScore(
+                scoreHolder,
+                (byte) ScoreAction.CHANGE,
+                objective,
+                score,
+                displayName == null ? null : player.getPlatform().toComponent(displayName, player.getVersion()),
+                numberFormat == null ? null : new NumberFormat(NumberFormat.Type.FIXED,
+                        player.getPlatform().toComponent(numberFormat, player.getVersion()))
+        ));
     }
 
     @Override
-    public void removeScore0(@NotNull String objective, @NotNull String playerName) {
-        player.sendPacket(new ScoreboardScore(playerName, (byte) 1, objective, 0));
+    public void removeScore0(@NotNull String objective, @NotNull String scoreHolder) {
+        if (player.getVersion().getNetworkId() >= ProtocolVersion.V1_20_3.getNetworkId()) {
+            player.sendPacket(new ScoreboardScoreReset(scoreHolder, objective));
+        } else {
+            player.sendPacket(new ScoreboardScore(scoreHolder, (byte) ScoreAction.REMOVE, objective, 0, null, null));
+        }
+    }
+
+    private Either<String, BaseComponent> either(@NotNull String text) {
+        if (player.getVersion().getMinorVersion() >= 13) {
+            return Either.right(player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(text), player.getVersion()));
+        } else {
+            return Either.left(text);
+        }
     }
 }

bungeecord/src/main/java/me/neznamy/tab/platforms/bungeecord/BungeeTAB.java

@@ -12,9 +12,9 @@ public class BungeeTAB extends Plugin {
 
     @Override
     public void onEnable() {
-        if (!ReflectionUtils.classExists("net.md_5.bungee.protocol.packet.PlayerListItemUpdate")) {
-            getLogger().info(EnumChatFormat.color("&cThe plugin requires BungeeCord build #1671 " +
-                    "(released on December 7th, 2022) and up (or an equivalent fork) to work."));
+        if (!ReflectionUtils.classExists("net.md_5.bungee.protocol.packet.ScoreboardScoreReset")) {
+            getLogger().warning(EnumChatFormat.color("&cThe plugin requires BungeeCord build #1774 " +
+                    "(released on November 25th, 2023) and up (or an equivalent fork) to work."));
             return;
         }
         TAB.create(new BungeePlatform(this));

bungeecord/src/main/java/me/neznamy/tab/platforms/bungeecord/BungeeTabPlayer.java

@@ -2,7 +2,6 @@ package me.neznamy.tab.platforms.bungeecord;
 
 import de.myzelyam.api.vanish.BungeeVanishAPI;
 import lombok.Getter;
-import lombok.SneakyThrows;
 import me.neznamy.tab.shared.ProtocolVersion;
 import me.neznamy.tab.platforms.bungeecord.tablist.BungeeTabList1193;
 import me.neznamy.tab.platforms.bungeecord.tablist.BungeeTabList17;
@@ -12,11 +11,10 @@ import me.neznamy.tab.shared.TabConstants;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
 import me.neznamy.tab.shared.platform.Scoreboard;
 import me.neznamy.tab.shared.platform.TabList;
-import me.neznamy.tab.shared.platform.bossbar.BossBar;
+import me.neznamy.tab.shared.platform.BossBar;
 import me.neznamy.tab.shared.proxy.ProxyTabPlayer;
-import net.md_5.bungee.api.ProxyServer;
+import net.md_5.bungee.UserConnection;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
-import net.md_5.bungee.chat.ComponentSerializer;
 import net.md_5.bungee.connection.InitialHandler;
 import net.md_5.bungee.connection.LoginResult;
 import net.md_5.bungee.protocol.DefinedPacket;
@@ -30,9 +28,6 @@ import org.jetbrains.annotations.Nullable;
 @Getter
 public class BungeeTabPlayer extends ProxyTabPlayer {
 
-    /** Flag tracking plugin presence */
-    private static final boolean premiumVanish = ProxyServer.getInstance().getPluginManager().getPlugin("PremiumVanish") != null;
-
     /** Player's scoreboard */
     @NotNull
     private final Scoreboard<BungeeTabPlayer> scoreboard = new BungeeScoreboard(this);
@@ -75,7 +70,7 @@ public class BungeeTabPlayer extends ProxyTabPlayer {
 
     @Override
     public void sendMessage(@NotNull IChatBaseComponent message) {
-        getPlayer().sendMessage(ComponentSerializer.parse(message.toString(getVersion())));
+        getPlayer().sendMessage(getPlatform().toComponent(message, getVersion()));
     }
 
     @Override
@@ -138,7 +133,7 @@ public class BungeeTabPlayer extends ProxyTabPlayer {
     public boolean isVanished() {
         try {
             //noinspection ConstantConditions
-            if (premiumVanish && BungeeVanishAPI.isInvisible(getPlayer())) return true;
+            if (getPlatform().isPremiumVanish() && BungeeVanishAPI.isInvisible(getPlayer())) return true;
         } catch (IllegalStateException ignored) {
             // PV Bug: PremiumVanish must be enabled to use its API
         }
@@ -161,9 +156,18 @@ public class BungeeTabPlayer extends ProxyTabPlayer {
      * @param   packet
      *          Packet to send
      */
-    @SneakyThrows
     public void sendPacket(@NotNull DefinedPacket packet) {
         if (!getPlayer().isConnected()) return;
-        BungeeMultiVersion.sendPacket(this, packet);
+        try {
+            ((UserConnection)getPlayer()).sendPacketQueued(packet);
+        } catch (NullPointerException BungeeCordBug) {
+            // java.lang.NullPointerException: Cannot invoke "net.md_5.bungee.protocol.MinecraftEncoder.getProtocol()" because the return value of "io.netty.channel.ChannelPipeline.get(java.lang.Class)" is null
+            //        at net.md_5.bungee.netty.ChannelWrapper.getEncodeProtocol(ChannelWrapper.java:51)
+            //        at net.md_5.bungee.UserConnection.sendPacketQueued(UserConnection.java:194)
+            if (TAB.getInstance().getConfiguration().isDebugMode()) {
+                TAB.getInstance().getErrorManager().printError("Failed to deliver packet to player " + getName() +
+                        " (online = " + getPlayer().isConnected() + "): " + packet, BungeeCordBug);
+            }
+        }
     }
 }

bungeecord/src/main/java/me/neznamy/tab/platforms/bungeecord/tablist/BungeeTabList.java

@@ -1,13 +1,13 @@
 package me.neznamy.tab.platforms.bungeecord.tablist;
 
 import lombok.SneakyThrows;
-import me.neznamy.tab.platforms.bungeecord.BungeeMultiVersion;
 import me.neznamy.tab.platforms.bungeecord.BungeeTabPlayer;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
 import me.neznamy.tab.shared.platform.TabList;
 import me.neznamy.tab.shared.util.ReflectionUtils;
 import net.md_5.bungee.UserConnection;
 import net.md_5.bungee.protocol.Property;
+import net.md_5.bungee.protocol.packet.PlayerListHeaderFooter;
 import net.md_5.bungee.protocol.packet.PlayerListItem.Item;
 import net.md_5.bungee.tab.ServerUnique;
 import org.jetbrains.annotations.NotNull;
@@ -33,7 +33,10 @@ public abstract class BungeeTabList implements TabList {
 
     @Override
     public void setPlayerListHeaderFooter(@NotNull IChatBaseComponent header, @NotNull IChatBaseComponent footer) {
-        player.sendPacket(BungeeMultiVersion.newPlayerListHeaderFooter(header, footer, player.getVersion()));
+        player.sendPacket(new PlayerListHeaderFooter(
+                player.getPlatform().toComponent(header, player.getVersion()),
+                player.getPlatform().toComponent(footer, player.getVersion())
+        ));
     }
 
     @NotNull
@@ -47,7 +50,7 @@ public abstract class BungeeTabList implements TabList {
     public Item entryToItem(Entry entry) {
         Item item = item(entry.getUniqueId());
         if (entry.getDisplayName() != null) {
-            BungeeMultiVersion.setDisplayName(item, entry.getDisplayName(), player.getVersion());
+            item.setDisplayName(player.getPlatform().toComponent(entry.getDisplayName(), player.getVersion()));
         }
         item.setGamemode(entry.getGameMode());
         item.setListed(true);

bungeecord/src/main/java/me/neznamy/tab/platforms/bungeecord/tablist/BungeeTabList1193.java

@@ -1,6 +1,5 @@
 package me.neznamy.tab.platforms.bungeecord.tablist;
 
-import me.neznamy.tab.platforms.bungeecord.BungeeMultiVersion;
 import me.neznamy.tab.platforms.bungeecord.BungeeTabPlayer;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
 import net.md_5.bungee.protocol.packet.PlayerListItem.Item;
@@ -33,7 +32,7 @@ public class BungeeTabList1193 extends BungeeTabList {
     @Override
     public void updateDisplayName(@NotNull UUID entry, @Nullable IChatBaseComponent displayName) {
         Item item = item(entry);
-        if (displayName != null) BungeeMultiVersion.setDisplayName(item, displayName, player.getVersion());
+        if (displayName != null) item.setDisplayName(player.getPlatform().toComponent(displayName, player.getVersion()));
         sendPacket(EnumSet.of(PlayerListItemUpdate.Action.UPDATE_DISPLAY_NAME), item);
     }
 

bungeecord/src/main/java/me/neznamy/tab/platforms/bungeecord/tablist/BungeeTabList17.java

@@ -1,6 +1,5 @@
 package me.neznamy.tab.platforms.bungeecord.tablist;
 
-import me.neznamy.tab.platforms.bungeecord.BungeeMultiVersion;
 import me.neznamy.tab.platforms.bungeecord.BungeeTabPlayer;
 import me.neznamy.tab.shared.Limitations;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
@@ -74,6 +73,11 @@ public class BungeeTabList17 extends BungeeTabList {
         displayNames.put(entry.getUniqueId(), displayNameString);
     }
 
+    @Override
+    public void setPlayerListHeaderFooter(@NotNull IChatBaseComponent header, @NotNull IChatBaseComponent footer) {
+        // Not available on 1.7
+    }
+
     private void update(@NotNull PlayerListItem.Action action, @NotNull PlayerListItem.Item item) {
         PlayerListItem packet = new PlayerListItem();
         packet.setAction(action);
@@ -84,8 +88,8 @@ public class BungeeTabList17 extends BungeeTabList {
     private PlayerListItem.Item createItem(@Nullable String username, @NotNull String displayName, int latency) {
         PlayerListItem.Item item = new PlayerListItem.Item();
         item.setUsername(username);
-        BungeeMultiVersion.setDisplayName(item, IChatBaseComponent.optimizedComponent(displayName), player.getVersion());
         item.setPing(latency);
+        item.setDisplayName(player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(displayName), player.getVersion()));
         return item;
     }
 }

bungeecord/src/main/java/me/neznamy/tab/platforms/bungeecord/tablist/BungeeTabList18.java

@@ -1,6 +1,5 @@
 package me.neznamy.tab.platforms.bungeecord.tablist;
 
-import me.neznamy.tab.platforms.bungeecord.BungeeMultiVersion;
 import me.neznamy.tab.platforms.bungeecord.BungeeTabPlayer;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
 import net.md_5.bungee.protocol.packet.PlayerListItem;
@@ -29,7 +28,7 @@ public class BungeeTabList18 extends BungeeTabList {
     @Override
     public void updateDisplayName(@NotNull UUID entry, @Nullable IChatBaseComponent displayName) {
         Item item = item(entry);
-        if (displayName != null) BungeeMultiVersion.setDisplayName(item, displayName, player.getVersion());
+        if (displayName != null) item.setDisplayName(player.getPlatform().toComponent(displayName, player.getVersion()));
         sendPacket(PlayerListItem.Action.UPDATE_DISPLAY_NAME, item);
     }
 

fabric/build.gradle.kts

@@ -1,34 +1,3 @@
-val minecraftVersion = "1.20.2"
-
-val v115 = "0.28.5+1.15"
-val v116 = "0.42.0+1.16"
-
-val fabricApiVersions = mapOf(
-    "1.20.2" to "0.88.5+1.20.2",
-    "1.20.1" to "0.83.0+1.20.1",
-    "1.20"   to "0.83.0+1.20",
-    "1.19.4" to "0.77.0+1.19.4",
-    "1.19.3" to "0.76.0+1.19.3",
-    "1.19.2" to "0.76.0+1.19.2",
-    "1.19.1" to "0.58.5+1.19.1",
-    "1.19"   to "0.58.0+1.19",
-    "1.18.2" to "0.76.0+1.18.2",
-    "1.18.1" to "0.46.6+1.18",
-    "1.18"   to "0.46.6+1.18",
-    "1.17.1" to "0.46.1+1.17",
-    "1.17"   to "0.46.1+1.17",
-    "1.16.5" to v116,
-    "1.16.4" to v116,
-    "1.16.3" to v116,
-    "1.16.2" to v116,
-    "1.16.1" to v116,
-    "1.16"   to v116,
-    "1.15.2" to v115,
-    "1.15.1" to v115,
-    "1.15"   to v115,
-    "1.14.4" to "0.28.5+1.14",
-)
-
 plugins {
     id("fabric-loom")
 }
@@ -42,33 +11,14 @@ repositories {
 }
 
 dependencies {
-    implementation(projects.shared)
-
-    minecraft("com.mojang:minecraft:$minecraftVersion")
+    api(projects.shared)
+    minecraft("com.mojang:minecraft:1.20.4")
     mappings(loom.officialMojangMappings())
-
-    modImplementation("net.fabricmc", "fabric-loader", "0.14.17")
-    modImplementation("me.lucko", "fabric-permissions-api", "0.2-SNAPSHOT")
-    modImplementation(fabricApi.module("fabric-api-base", fabricApiVersions[minecraftVersion]))
-    modImplementation(fabricApi.module("fabric-lifecycle-events-v1", fabricApiVersions[minecraftVersion]))
-    modImplementation(fabricApi.module("fabric-networking-api-v1", fabricApiVersions[minecraftVersion]))
-    modImplementation(fabricApi.module("fabric-command-api-v${if (minecraftVersion.split(".")[1].toInt() >= 19) "2" else "1"}", fabricApiVersions[minecraftVersion]))
-    if (minecraftVersion.split(".")[1].toInt() >= 16) {
-        modImplementation(fabricApi.module("fabric-entity-events-v1", fabricApiVersions[minecraftVersion]))
-    }
-}
-
-loom {
-    accessWidenerPath.set(file("src/main/resources/tab.accesswidener"))
-}
-
-tasks {
-    compileJava {
-        options.release.set(17)
-    }
-    validateAccessWidener {
-        // We don't want to validate the access wideners, as we have wideners for multiple versions, and the validation task will
-        // fail, as the classes for the old wideners don't exist in the new versions and vice versa.
-        enabled = false
-    }
-}
+    modImplementation("me.lucko:fabric-permissions-api:0.2-SNAPSHOT")
+    modImplementation("net.fabricmc:fabric-loader:0.14.17")
+    val version = "0.91.1+1.20.4"
+    modImplementation(fabricApi.module("fabric-api-base", version))
+    modImplementation(fabricApi.module("fabric-lifecycle-events-v1", version))
+    modImplementation(fabricApi.module("fabric-networking-api-v1", version))
+    modImplementation(fabricApi.module("fabric-entity-events-v1", version))
+}

fabric/src/main/java/me/neznamy/tab/platforms/fabric/FabricBossBar.java

@@ -1,41 +1,22 @@
 package me.neznamy.tab.platforms.fabric;
 
-import java.util.HashMap;
-import java.util.Map;
-import java.util.UUID;
 import lombok.RequiredArgsConstructor;
 import me.neznamy.tab.api.bossbar.BarColor;
 import me.neznamy.tab.api.bossbar.BarStyle;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
-import me.neznamy.tab.shared.platform.bossbar.BossBar;
+import me.neznamy.tab.shared.platform.BossBar;
 import net.minecraft.server.level.ServerBossEvent;
 import net.minecraft.world.BossEvent.BossBarColor;
 import net.minecraft.world.BossEvent.BossBarOverlay;
 import org.jetbrains.annotations.NotNull;
 
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
 @RequiredArgsConstructor
 public class FabricBossBar implements BossBar {
 
-    /** Color array for fast access */
-    private static final BossBarColor[] colors = new BossBarColor[] {
-            BossBarColor.PINK,
-            BossBarColor.BLUE,
-            BossBarColor.RED,
-            BossBarColor.GREEN,
-            BossBarColor.YELLOW,
-            BossBarColor.PURPLE,
-            BossBarColor.WHITE
-    };
-
-    /** Overlay array for fast access */
-    private static final BossBarOverlay[] overlays = new BossBarOverlay[] {
-            BossBarOverlay.PROGRESS,
-            BossBarOverlay.NOTCHED_6,
-            BossBarOverlay.NOTCHED_10,
-            BossBarOverlay.NOTCHED_12,
-            BossBarOverlay.NOTCHED_20
-    };
-    
     @NotNull
     private final FabricTabPlayer player;
 
@@ -46,10 +27,10 @@ public class FabricBossBar implements BossBar {
     public void create(@NotNull UUID id, @NotNull String title, float progress, @NotNull BarColor color, @NotNull BarStyle style) {
         ServerBossEvent bar = new ServerBossEvent(
                 player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(title), player.getVersion()),
-                colors[color.ordinal()],
-                overlays[style.ordinal()]
+                BossBarColor.valueOf(color.name()),
+                BossBarOverlay.valueOf(style.name())
         );
-        FabricMultiVersion.setProgress(bar, progress);
+        bar.setProgress(progress); // Somehow the compiled method name is same despite method being renamed in 1.17
         bars.put(id, bar);
         bar.addPlayer(player.getPlayer());
     }
@@ -61,17 +42,17 @@ public class FabricBossBar implements BossBar {
 
     @Override
     public void update(@NotNull UUID id, float progress) {
-        FabricMultiVersion.setProgress(bars.get(id), progress);
+        bars.get(id).setProgress(progress); // Somehow the compiled method name is same despite method being renamed in 1.17
     }
 
     @Override
     public void update(@NotNull UUID id, @NotNull BarStyle style) {
-        bars.get(id).setOverlay(overlays[style.ordinal()]);
+        bars.get(id).setOverlay(BossBarOverlay.valueOf(style.name()));
     }
 
     @Override
     public void update(@NotNull UUID id, @NotNull BarColor color) {
-        bars.get(id).setColor(colors[color.ordinal()]);
+        bars.get(id).setColor(BossBarColor.valueOf(color.name()));
     }
 
     @Override

fabric/src/main/java/me/neznamy/tab/platforms/fabric/FabricEntityView.java

@@ -1,31 +1,37 @@
 package me.neznamy.tab.platforms.fabric;
 
+import lombok.RequiredArgsConstructor;
+import lombok.SneakyThrows;
 import me.neznamy.tab.shared.backend.EntityData;
 import me.neznamy.tab.shared.backend.Location;
 import me.neznamy.tab.shared.backend.entityview.EntityView;
-import net.minecraft.network.protocol.game.*;
-import net.minecraft.world.entity.Entity;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.minecraft.network.protocol.game.ClientboundMoveEntityPacket;
+import net.minecraft.network.protocol.game.ClientboundRemoveEntitiesPacket;
+import net.minecraft.network.protocol.game.ClientboundTeleportEntityPacket;
 import net.minecraft.world.entity.decoration.ArmorStand;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.UUID;
 
-public record FabricEntityView(FabricTabPlayer player) implements EntityView {
+@RequiredArgsConstructor
+public class FabricEntityView implements EntityView {
+
+    private final FabricTabPlayer player;
 
     @NotNull
-    private static final Entity dummyEntity = new ArmorStand(null, 0, 0, 0);
+    private static final ArmorStand dummyEntity = new ArmorStand(null, 0, 0, 0);
 
     @Override
     public void spawnEntity(int entityId, @NotNull UUID id, @NotNull Object entityType, @NotNull Location location,
                             @NotNull EntityData data) {
-        player.sendPacket(FabricMultiVersion.addEntity(entityId, id, entityType, location, data));
+        player.sendPacket(FabricTAB.getVersion().spawnEntity(entityId, id, entityType, location));
         updateEntityMetadata(entityId, data);
     }
 
     @Override
     public void updateEntityMetadata(int entityId, @NotNull EntityData data) {
-        player.sendPacket(FabricMultiVersion.newEntityMetadata(entityId, data));
-
+        player.sendPacket(FabricTAB.getVersion().newEntityMetadata(entityId, data));
     }
 
     @Override
@@ -37,12 +43,12 @@ public record FabricEntityView(FabricTabPlayer player) implements EntityView {
 
     @Override
     public void destroyEntities(int... entities) {
-        FabricMultiVersion.destroyEntities(player, entities);
+        FabricTAB.getVersion().destroyEntities(player, entities);
     }
 
     @Override
     public boolean isDestroyPacket(@NotNull Object packet) {
-        return FabricMultiVersion.isEntityDestroyPacket(packet);
+        return packet instanceof ClientboundRemoveEntitiesPacket;
     }
 
     @Override
@@ -52,7 +58,7 @@ public record FabricEntityView(FabricTabPlayer player) implements EntityView {
 
     @Override
     public boolean isNamedEntitySpawnPacket(@NotNull Object packet) {
-        return packet instanceof ClientboundAddEntityPacket;
+        return FabricTAB.getVersion().isSpawnPlayerPacket(packet);
     }
 
     @Override
@@ -66,33 +72,35 @@ public record FabricEntityView(FabricTabPlayer player) implements EntityView {
     }
 
     @Override
+    @SneakyThrows
     public int getTeleportEntityId(@NotNull Object teleportPacket) {
-        return ((ClientboundTeleportEntityPacket) teleportPacket).getId();
+        // Reflection because on 1.16.5 there is no getter and per-version code would only add unnecessary code
+        return ReflectionUtils.getFields(ClientboundTeleportEntityPacket.class, int.class).get(0).getInt(teleportPacket);
     }
 
     @Override
+    @SneakyThrows
     public int getMoveEntityId(@NotNull Object movePacket) {
-        return ((ClientboundMoveEntityPacket) movePacket).entityId;
+        return (int) ReflectionUtils.getFields(ClientboundMoveEntityPacket.class, int.class).get(0).get(movePacket);
     }
 
     @Override
     public int getSpawnedPlayer(@NotNull Object playerSpawnPacket) {
-        return ((ClientboundAddEntityPacket) playerSpawnPacket).getId();
+        return FabricTAB.getVersion().getSpawnedPlayer(playerSpawnPacket);
     }
 
     @Override
     public int[] getDestroyedEntities(@NotNull Object destroyPacket) {
-        return FabricMultiVersion.getDestroyedEntities(destroyPacket);
+        return FabricTAB.getVersion().getDestroyedEntities(destroyPacket);
     }
 
     @Override
     public boolean isBundlePacket(@NotNull Object packet) {
-        return FabricMultiVersion.isBundlePacket(packet);
+        return FabricTAB.getVersion().isBundlePacket(packet);
     }
 
-    @SuppressWarnings("unchecked")
     @Override
     public Iterable<Object> getPackets(@NotNull Object bundlePacket) {
-        return (Iterable<Object>) (Object) FabricMultiVersion.getPackets(bundlePacket);
+        return FabricTAB.getVersion().getPackets(bundlePacket);
     }
 }

fabric/src/main/java/me/neznamy/tab/platforms/fabric/FabricEventListener.java

@@ -1,8 +1,11 @@
 package me.neznamy.tab.platforms.fabric;
 
+import me.neznamy.tab.shared.ProtocolVersion;
 import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.platform.EventListener;
 import me.neznamy.tab.shared.platform.TabPlayer;
+import net.fabricmc.fabric.api.entity.event.v1.ServerEntityWorldChangeEvents;
+import net.fabricmc.fabric.api.entity.event.v1.ServerPlayerEvents;
 import net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents;
 import net.minecraft.server.level.ServerPlayer;
 import org.jetbrains.annotations.NotNull;
@@ -12,8 +15,18 @@ public class FabricEventListener extends EventListener<ServerPlayer> {
     public void register() {
         ServerPlayConnectionEvents.DISCONNECT.register((connection, $) -> quit(connection.player.getUUID()));
         ServerPlayConnectionEvents.JOIN.register((connection, $, $$) -> join(connection.player));
-        FabricMultiVersion.registerEntityEvents(this::replacePlayer, this::worldChange);
         //TODO command preprocess
+        if (ProtocolVersion.fromFriendlyName(FabricTAB.getVersion().getServerVersion()).getMinorVersion() >= 16) {
+            // Added in 1.16
+            ServerPlayerEvents.AFTER_RESPAWN.register(
+                    (oldPlayer, newPlayer, alive) -> {
+                        replacePlayer(newPlayer.getUUID(), newPlayer);
+                        // respawning from death & taking end portal in the end do not call world change event
+                        worldChange(newPlayer.getUUID(), FabricTAB.getVersion().getName(FabricTAB.getVersion().getLevel(newPlayer)));
+                    });
+            ServerEntityWorldChangeEvents.AFTER_PLAYER_CHANGE_WORLD.register(
+                    (player, origin, destination) -> worldChange(player.getUUID(), FabricTAB.getVersion().getName(destination)));
+        } // TODO else
     }
 
     @Override

fabric/src/main/java/me/neznamy/tab/platforms/fabric/FabricMultiVersion.java

@@ -1,324 +0,0 @@
-package me.neznamy.tab.platforms.fabric;
-
-import com.mojang.authlib.properties.Property;
-import me.neznamy.tab.platforms.fabric.features.FabricNameTagX;
-import me.neznamy.tab.shared.ProtocolVersion;
-import me.neznamy.tab.shared.backend.EntityData;
-import me.neznamy.tab.shared.backend.Location;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
-import me.neznamy.tab.shared.platform.TabList;
-import me.neznamy.tab.shared.platform.TabPlayer;
-import net.minecraft.SharedConstants;
-import net.minecraft.commands.CommandSourceStack;
-import net.minecraft.network.chat.Component;
-import net.minecraft.network.protocol.Packet;
-import net.minecraft.network.protocol.game.*;
-import net.minecraft.network.syncher.EntityDataSerializers;
-import net.minecraft.network.syncher.SynchedEntityData;
-import net.minecraft.server.level.ServerBossEvent;
-import net.minecraft.server.level.ServerPlayer;
-import net.minecraft.world.entity.EntityType;
-import net.minecraft.world.level.GameType;
-import net.minecraft.world.level.Level;
-import net.minecraft.world.level.storage.ServerLevelData;
-import net.minecraft.world.phys.Vec3;
-import net.minecraft.world.scores.Objective;
-import net.minecraft.world.scores.PlayerTeam;
-import org.jetbrains.annotations.NotNull;
-
-import java.util.*;
-import java.util.function.BiConsumer;
-
-/**
- * Class that contains (almost) all code that needs to be changed
- * to set compatibility with any MC version that fabric supports (1.14.4+).
- */
-public class FabricMultiVersion {
-
-    private static final int armorStandFlagsPosition = getArmorStandFlagsPosition();
-
-    private static int getArmorStandFlagsPosition() {
-        int minorVersion = ProtocolVersion.fromFriendlyName(SharedConstants.getCurrentVersion().getName()).getMinorVersion();
-        if (minorVersion >= 17) {
-            //1.17.x, 1.18.x, 1.19.x, 1.20.x
-            return 15;
-        } else if (minorVersion >= 15) {
-            //1.15.x, 1.16.x
-            return 14;
-        } else {
-            //1.14.x
-            return 13;
-        }
-    }
-
-    public static String getWorldName(Level level) {
-        // 1.15.2-
-        // return level.getLevelData().getLevelName() + level.dimension.getType().getFileSuffix();
-
-        // 1.16+
-        String path = level.dimension().location().getPath();
-        String dimensionSuffix = switch (path) {
-            case "overworld" -> ""; // No suffix for overworld
-            case "the_nether" -> "_nether";
-            default -> "_" + path; // End + default behavior for other dimensions created by mods
-        };
-        return ((ServerLevelData)level.getLevelData()).getLevelName() + dimensionSuffix;
-    }
-    
-    public static void sendSystemMessage(CommandSourceStack source, Component message) {
-        // 1.19.4-
-        // source.sendSuccess(message, false);
-
-        // 1.19.1+
-        source.sendSystemMessage(message);
-    }
-
-    public static boolean isSneaking(ServerPlayer player) {
-        // 1.14.4-
-        // return player.isSneaking();
-
-        // 1.15+
-        return player.isCrouching();
-    }
-
-    public static void registerNameTagXEvents(FabricNameTagX nameTagX) {
-        // 1.16+
-        net.fabricmc.fabric.api.entity.event.v1.ServerPlayerEvents.AFTER_RESPAWN.register((oldPlayer, newPlayer, alive) -> {
-            if (nameTagX.enabled) nameTagX.respawn(oldPlayer.getUUID());
-        });
-        // TODO sneaking
-    }
-
-    public static void registerEntityEvents(BiConsumer<UUID, ServerPlayer> respawnAction, BiConsumer<UUID, String> worldChangeAction) {
-        // 1.16+
-        net.fabricmc.fabric.api.entity.event.v1.ServerPlayerEvents.AFTER_RESPAWN.register(
-                (oldPlayer, newPlayer, alive) -> {
-                    respawnAction.accept(newPlayer.getUUID(), newPlayer);
-                    // respawning from death & taking end portal in the end do not call world change event
-                    worldChangeAction.accept(newPlayer.getUUID(), getWorldName(newPlayer.level));
-                });
-        net.fabricmc.fabric.api.entity.event.v1.ServerEntityWorldChangeEvents.AFTER_PLAYER_CHANGE_WORLD.register(
-                (player, origin, destination) -> worldChangeAction.accept(player.getUUID(), getWorldName(destination)));
-    }
-
-    public static ClientboundTabListPacket setHeaderFooter(Component header, Component footer) {
-        // 1.16.5-
-        /*ClientboundTabListPacket packet = new ClientboundTabListPacket();
-        packet.header = header;
-        packet.footer = footer;
-        return packet;*/
-
-        // 1.17+
-        return new ClientboundTabListPacket(header, footer);
-    }
-
-    public static ClientboundSetPlayerTeamPacket createTeam(PlayerTeam team) {
-        // 1.16.5-
-        // return new ClientboundSetPlayerTeamPacket(team, 0);
-
-        // 1.17+
-        return ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, true);
-    }
-
-    public static ClientboundSetPlayerTeamPacket removeTeam(PlayerTeam team) {
-        // 1.16.5-
-        // return new ClientboundSetPlayerTeamPacket(team, 1);
-
-        // 1.17+
-        return ClientboundSetPlayerTeamPacket.createRemovePacket(team);
-    }
-
-    public static ClientboundSetPlayerTeamPacket updateTeam(PlayerTeam team) {
-        // 1.16.5-
-        // return new ClientboundSetPlayerTeamPacket(team, 2);
-
-        // 1.17+
-        return ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, false);
-    }
-
-    public static void setProgress(ServerBossEvent bar, float progress) {
-        // 1.16.5-
-        // bar.setPercent(progress);
-
-        // 1.17+
-        bar.setProgress(progress);
-    }
-
-    public static int[] getDestroyedEntities(Object destroyPacket) {
-        // 1.16.5-
-        // return ((ClientboundRemoveEntitiesPacket) destroyPacket).getEntityIds();
-
-        // 1.17
-        // return new int[]{((ClientboundRemoveEntityPacket)destroyPacket).getEntityId()};
-
-        // 1.17.1+
-        return ((ClientboundRemoveEntitiesPacket) destroyPacket).getEntityIds().toIntArray();
-    }
-
-    public static void destroyEntities(FabricTabPlayer player, int... entities) {
-        // 1.17
-        /*for (int i : entities) {
-            player.sendPacket(new ClientboundRemoveEntityPacket(i));
-        }*/
-
-        // every other version
-        player.sendPacket(new ClientboundRemoveEntitiesPacket(entities));
-    }
-
-    public static boolean isEntityDestroyPacket(Object packet) {
-        // 1.17
-        // return packet instanceof ClientboundRemoveEntityPacket;
-
-        // every other version
-        return packet instanceof ClientboundRemoveEntitiesPacket;
-    }
-
-    public static void registerCommand() {
-        // 1.18.2-
-        // net.fabricmc.fabric.api.command.v1.CommandRegistrationCallback.EVENT.register((dispatcher, $) -> new FabricTabCommand().onRegisterCommands(dispatcher));
-
-        // 1.19+
-        net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback.EVENT.register((dispatcher, $, $$) -> new FabricTabCommand().onRegisterCommands(dispatcher));
-    }
-
-    public static void sendMessage(FabricTabPlayer player, Component message) {
-        // 1.15.2-
-        // player.getPlayer().sendMessage(message);
-
-        // 1.16 - 1.18.2
-        // player.getPlayer().sendMessage(message, new UUID(0, 0));
-
-        // 1.19+
-        player.getPlayer().sendSystemMessage(message);
-    }
-
-    public static ClientboundAddEntityPacket addEntity(int entityId, @NotNull UUID id, @NotNull Object entityType,
-                                                       @NotNull Location location, @NotNull EntityData data) {
-        // 1.18.2-
-        // return new ClientboundAddEntityPacket(entityId, id, location.getX(), location.getY(), location.getZ(), 0, 0, (EntityType<?>) entityType, 0, Vec3.ZERO);
-
-        // 1.19+
-        return new ClientboundAddEntityPacket(entityId, id, location.getX(), location.getY(), location.getZ(), 0, 0, (EntityType<?>) entityType, 0, Vec3.ZERO, 0);
-    }
-
-    public static boolean isPlayerInfo(Object packet) {
-        // 1.19.2-
-        // return packet instanceof ClientboundPlayerInfoPacket;
-
-        // 1.19.3+
-        return packet instanceof ClientboundPlayerInfoUpdatePacket;
-    }
-
-    public static Packet<?> build(FabricTabList.Action action, FabricTabList.Builder entry) {
-        // 1.16.5-
-        /*ClientboundPlayerInfoPacket packet = new ClientboundPlayerInfoPacket(ClientboundPlayerInfoPacket.Action.valueOf(action.name()), Collections.emptyList());
-        packet.entries = Collections.singletonList(new ClientboundPlayerInfoPacket().new PlayerUpdate(
-                entry.createProfile(), entry.getLatency(), GameType.byId(entry.getGameMode()), entry.getDisplayName()
-        ));
-        return packet;*/
-
-        // 1.17 - 1.18.2
-        /*ClientboundPlayerInfoPacket packet = new ClientboundPlayerInfoPacket(ClientboundPlayerInfoPacket.Action.valueOf(action.name()), Collections.emptyList());
-        packet.entries = Collections.singletonList(new ClientboundPlayerInfoPacket.PlayerUpdate(
-                entry.createProfile(), entry.getLatency(), GameType.byId(entry.getGameMode()), entry.getDisplayName()
-        ));
-        return packet;*/
-
-        // 1.19 - 1.19.2
-        /*ClientboundPlayerInfoPacket packet = new ClientboundPlayerInfoPacket(ClientboundPlayerInfoPacket.Action.valueOf(action.name()), Collections.emptyList());
-        packet.entries = Collections.singletonList(new ClientboundPlayerInfoPacket.PlayerUpdate(
-                entry.createProfile(), entry.getLatency(), GameType.byId(entry.getGameMode()), entry.getDisplayName(), null
-        ));
-        return packet;*/
-
-        // 1.19.3+
-        if (action == FabricTabList.Action.REMOVE_PLAYER) {
-            return new ClientboundPlayerInfoRemovePacket(Collections.singletonList(entry.getId()));
-        }
-        EnumSet<ClientboundPlayerInfoUpdatePacket.Action> actions = action == FabricTabList.Action.ADD_PLAYER ?
-                EnumSet.allOf(ClientboundPlayerInfoUpdatePacket.Action.class) :
-                EnumSet.of(ClientboundPlayerInfoUpdatePacket.Action.valueOf(action.name()));
-        ClientboundPlayerInfoUpdatePacket packet = new ClientboundPlayerInfoUpdatePacket(actions, Collections.emptyList());
-        packet.entries = Collections.singletonList(new ClientboundPlayerInfoUpdatePacket.Entry(
-                entry.getId(),
-                entry.createProfile(),
-                true,
-                entry.getLatency(),
-                GameType.byId(entry.getGameMode()),
-                entry.getDisplayName(),
-                null
-        ));
-        return packet;
-    }
-
-    public static EntityData createDataWatcher(@NotNull TabPlayer viewer, byte flags, @NotNull String displayName, boolean nameVisible) {
-        // 1.19.2-
-        /*SynchedEntityData data = new SynchedEntityData(null);
-        data.define(new EntityDataAccessor<>(0, EntityDataSerializers.BYTE), flags);
-        data.define(new EntityDataAccessor<>(2, EntityDataSerializers.OPTIONAL_COMPONENT),
-                Optional.of(((FabricTabPlayer)viewer).getPlatform().toComponent(IChatBaseComponent.optimizedComponent(displayName), viewer.getVersion())));
-        data.define(new EntityDataAccessor<>(3, EntityDataSerializers.BOOLEAN), nameVisible);
-        data.define(new EntityDataAccessor<>(15, EntityDataSerializers.BYTE), (byte)16);
-        return () -> data;*/
-
-        // 1.19.3+
-        return () -> java.util.Arrays.asList(
-                new SynchedEntityData.DataValue<>(0, EntityDataSerializers.BYTE, flags),
-                new SynchedEntityData.DataValue<>(2, EntityDataSerializers.OPTIONAL_COMPONENT,
-                        Optional.of(((FabricTabPlayer)viewer).getPlatform().toComponent(IChatBaseComponent.optimizedComponent(displayName), viewer.getVersion()))),
-                new SynchedEntityData.DataValue<>(3, EntityDataSerializers.BOOLEAN, nameVisible),
-                new SynchedEntityData.DataValue<>(armorStandFlagsPosition, EntityDataSerializers.BYTE, (byte)16)
-        );
-    }
-
-    @SuppressWarnings("unchecked")
-    public static ClientboundSetEntityDataPacket newEntityMetadata(int entityId, EntityData data) {
-        // 1.19.2-
-        // return new ClientboundSetEntityDataPacket(entityId, (SynchedEntityData) data.build(), true);
-
-        // 1.19.3+
-        return new ClientboundSetEntityDataPacket(entityId, (List<SynchedEntityData.DataValue<?>>) data.build());
-    }
-
-    public static boolean isBundlePacket(Object packet) {
-        // 1.19.4+
-        return packet instanceof ClientboundBundlePacket;
-    }
-
-    public static Iterable<Packet<ClientGamePacketListener>> getPackets(Object bundlePacket) {
-        // 1.19.4+
-        return ((ClientboundBundlePacket)bundlePacket).subPackets();
-    }
-
-    public static ClientboundSetDisplayObjectivePacket newDisplayObjective(int slot, Objective objective) {
-        // 1.20.1-
-        // return new ClientboundSetDisplayObjectivePacket(slot, objective);
-
-        // 1.20.2+
-        return new ClientboundSetDisplayObjectivePacket(net.minecraft.world.scores.DisplaySlot.values()[slot], objective);
-    }
-
-    public static int getSlot(ClientboundSetDisplayObjectivePacket packet) {
-        // 1.20.1-
-        // return packet.getSlot();
-
-        // 1.20.2+
-        return packet.getSlot().ordinal();
-    }
-
-    public static int getPing(FabricTabPlayer player) {
-        // 1.20.1-
-        // return player.getPlayer().latency;
-
-        // 1.20.2+
-        return player.getPlayer().connection.latency();
-    }
-
-    public static TabList.Skin propertyToSkin(Property property) {
-        // 1.20.1-
-        // return new TabList.Skin(property.getValue(), property.getSignature());
-
-        // 1.20.2+
-        return new TabList.Skin(property.value(), property.signature());
-    }
-}

fabric/src/main/java/me/neznamy/tab/platforms/fabric/FabricPlatform.java

@@ -1,5 +1,9 @@
 package me.neznamy.tab.platforms.fabric;
 
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import lombok.SneakyThrows;
+import me.lucko.fabric.api.permissions.v0.Permissions;
 import me.neznamy.tab.platforms.fabric.features.FabricNameTagX;
 import me.neznamy.tab.shared.ProtocolVersion;
 import me.neznamy.tab.shared.TAB;
@@ -11,9 +15,10 @@ import me.neznamy.tab.shared.features.nametags.NameTag;
 import me.neznamy.tab.shared.features.types.TabFeature;
 import me.neznamy.tab.shared.placeholders.expansion.EmptyTabExpansion;
 import me.neznamy.tab.shared.placeholders.expansion.TabExpansion;
+import me.neznamy.tab.shared.util.ReflectionUtils;
 import net.fabricmc.fabric.api.networking.v1.PlayerLookup;
 import net.fabricmc.loader.api.FabricLoader;
-import net.minecraft.SharedConstants;
+import net.minecraft.commands.CommandSourceStack;
 import net.minecraft.network.chat.Component;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.level.ServerPlayer;
@@ -25,7 +30,13 @@ import java.io.File;
 /**
  * Platform implementation for Fabric
  */
-public record FabricPlatform(MinecraftServer server) implements BackendPlatform {
+@RequiredArgsConstructor
+@Getter
+public class FabricPlatform implements BackendPlatform {
+
+    private static final boolean fabricPermissionsApi = FabricLoader.getInstance().isModLoaded("fabric-permissions-api-v0");
+
+    private final MinecraftServer server;
 
     @Override
     public void registerUnknownPlaceholder(@NotNull String identifier) {
@@ -42,7 +53,7 @@ public record FabricPlatform(MinecraftServer server) implements BackendPlatform
     @Override
     @NotNull
     public PipelineInjector createPipelineInjector() {
-        return new FabricPipelineInjector();
+        return FabricTAB.getVersion().createPipelineInjector();
     }
 
     @Override
@@ -64,19 +75,34 @@ public record FabricPlatform(MinecraftServer server) implements BackendPlatform
     }
 
     @Override
+    @SneakyThrows
     public void logInfo(@NotNull IChatBaseComponent message) {
-        MinecraftServer.LOGGER.info("[TAB] " + message.toRawText());
+        Object logger = getLogger();
+        logger.getClass().getMethod("info", String.class).invoke(logger, message.toRawText());
     }
 
     @Override
+    @SneakyThrows
     public void logWarn(@NotNull IChatBaseComponent message) {
-        MinecraftServer.LOGGER.warn("[TAB] " + message.toRawText()); // Fabric console does not support colors
+        Object logger = getLogger();
+        logger.getClass().getMethod("warn", String.class).invoke(logger, message.toRawText());
+    }
+
+    @SneakyThrows
+    private Object getLogger() {
+        Class<?> loggerClass;
+        if (getServerVersion().getNetworkId() >= ProtocolVersion.V1_18_2.getNetworkId()) {
+            loggerClass = Class.forName("org.slf4j.Logger");
+        } else {
+            loggerClass = Class.forName("org.apache.logging.log4j.Logger");
+        }
+        return ReflectionUtils.getFields(MinecraftServer.class, loggerClass).get(0).get(null);
     }
 
     @Override
     @NotNull
     public String getServerVersionInfo() {
-        return "[Fabric] " + SharedConstants.getCurrentVersion().getName();
+        return "[Fabric] " + FabricTAB.getVersion().getServerVersion();
     }
 
     @Override
@@ -97,7 +123,7 @@ public record FabricPlatform(MinecraftServer server) implements BackendPlatform
     @Override
     @NotNull
     public ProtocolVersion getServerVersion() {
-        return ProtocolVersion.fromFriendlyName(SharedConstants.getCurrentVersion().getName());
+        return ProtocolVersion.fromFriendlyName(FabricTAB.getVersion().getServerVersion());
     }
 
     @Override
@@ -116,7 +142,7 @@ public record FabricPlatform(MinecraftServer server) implements BackendPlatform
      * @return  Converted component
      */
     public Component toComponent(@NotNull IChatBaseComponent component, @NotNull ProtocolVersion version) {
-        return Component.Serializer.fromJson(component.toString(version));
+        return FabricTAB.getVersion().deserialize(component.toString(version));
     }
 
     @Override
@@ -126,6 +152,11 @@ public record FabricPlatform(MinecraftServer server) implements BackendPlatform
 
     @Override
     public double getMSPT() {
-        return server.getAverageTickTime();
+        return FabricTAB.getVersion().getMSPT();
+    }
+
+    public boolean hasPermission(@NotNull CommandSourceStack source, @NotNull String permission) {
+        if (source.hasPermission(4)) return true;
+        return fabricPermissionsApi && Permissions.check(source, permission);
     }
 }

fabric/src/main/java/me/neznamy/tab/platforms/fabric/FabricScoreboard.java

@@ -1,96 +1,63 @@
 package me.neznamy.tab.platforms.fabric;
 
-import java.util.Collection;
-import java.util.Objects;
-
 import me.neznamy.tab.shared.chat.EnumChatFormat;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
 import me.neznamy.tab.shared.platform.Scoreboard;
 import net.minecraft.ChatFormatting;
 import net.minecraft.network.chat.Component;
 import net.minecraft.network.protocol.game.ClientboundSetObjectivePacket;
-import net.minecraft.network.protocol.game.ClientboundSetScorePacket;
-import net.minecraft.server.ServerScoreboard;
 import net.minecraft.world.scores.Objective;
 import net.minecraft.world.scores.PlayerTeam;
 import net.minecraft.world.scores.Team;
-import net.minecraft.world.scores.criteria.ObjectiveCriteria;
+import net.minecraft.world.scores.criteria.ObjectiveCriteria.RenderType;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
 
 public class FabricScoreboard extends Scoreboard<FabricTabPlayer> {
 
     @NotNull
     private static final net.minecraft.world.scores.Scoreboard dummyScoreboard = new net.minecraft.world.scores.Scoreboard();
 
-    @NotNull
-    private static final Component EMPTY_COMPONENT = Objects.requireNonNull(Component.Serializer.fromJson(IChatBaseComponent.EMPTY_COMPONENT));
+    private final Map<String, Objective> objectives = new HashMap<>();
 
     public FabricScoreboard(FabricTabPlayer player) {
         super(player);
     }
 
     @Override
-    public void setDisplaySlot(@NotNull DisplaySlot slot, @NotNull String objective) {
-        player.sendPacket(
-                FabricMultiVersion.newDisplayObjective(
-                        slot.ordinal(),
-                        new Objective(
-                                dummyScoreboard,
-                                objective,
-                                ObjectiveCriteria.DUMMY,
-                                EMPTY_COMPONENT,
-                                ObjectiveCriteria.RenderType.INTEGER
-                        )
-                )
-        );
+    public void setDisplaySlot0(int slot, @NotNull String objective) {
+        player.sendPacket(FabricTAB.getVersion().setDisplaySlot(slot, objectives.get(objective)));
     }
 
     @Override
-    public void registerObjective0(@NotNull String objectiveName, @NotNull String title, @NotNull HealthDisplay display) {
-        player.sendPacket(
-                new ClientboundSetObjectivePacket(
-                        new Objective(
-                                dummyScoreboard,
-                                objectiveName,
-                                ObjectiveCriteria.DUMMY,
-                                player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(title), player.getVersion()),
-                                ObjectiveCriteria.RenderType.valueOf(display.name())
-                        ),
-                        0
-                )
+    public void registerObjective0(@NotNull String objectiveName, @NotNull String title, int display,
+                                   @Nullable IChatBaseComponent numberFormat) {
+        Objective obj = FabricTAB.getVersion().newObjective(
+                objectiveName,
+                toComponent(title),
+                RenderType.values()[display],
+                numberFormat == null ? null : toComponent(numberFormat)
         );
+        objectives.put(objectiveName, obj);
+        player.sendPacket(new ClientboundSetObjectivePacket(obj, ObjectiveAction.REGISTER));
     }
 
     @Override
     public void unregisterObjective0(@NotNull String objectiveName) {
-        player.sendPacket(
-                new ClientboundSetObjectivePacket(
-                        new Objective(
-                                dummyScoreboard,
-                                objectiveName,
-                                ObjectiveCriteria.DUMMY,
-                                EMPTY_COMPONENT,
-                                ObjectiveCriteria.RenderType.INTEGER
-                        ),
-                        1
-                )
-        );
+        player.sendPacket(new ClientboundSetObjectivePacket(objectives.remove(objectiveName), ObjectiveAction.UNREGISTER));
     }
 
     @Override
-    public void updateObjective0(@NotNull String objectiveName, @NotNull String title, @NotNull HealthDisplay display) {
-        player.sendPacket(
-                new ClientboundSetObjectivePacket(
-                        new Objective(
-                                dummyScoreboard,
-                                objectiveName,
-                                ObjectiveCriteria.DUMMY,
-                                player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(title), player.getVersion()),
-                                ObjectiveCriteria.RenderType.valueOf(display.name())
-                        ),
-                        2
-                )
-        );
+    public void updateObjective0(@NotNull String objectiveName, @NotNull String title, int display,
+                                 @Nullable IChatBaseComponent numberFormat) {
+        Objective obj = objectives.get(objectiveName);
+        obj.setDisplayName(toComponent(title));
+        obj.setRenderType(RenderType.values()[display]);
+        player.sendPacket(new ClientboundSetObjectivePacket(obj, ObjectiveAction.UPDATE));
     }
 
     @Override
@@ -103,15 +70,15 @@ public class FabricScoreboard extends Scoreboard<FabricTabPlayer> {
         team.setColor(ChatFormatting.valueOf(EnumChatFormat.lastColorsOf(prefix).name()));
         team.setCollisionRule(Team.CollisionRule.valueOf(collision.name()));
         team.setNameTagVisibility(Team.Visibility.valueOf(visibility.name()));
-        team.setPlayerPrefix(player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(prefix), player.getVersion()));
-        team.setPlayerSuffix(player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(suffix), player.getVersion()));
+        team.setPlayerPrefix(toComponent(prefix));
+        team.setPlayerSuffix(toComponent(suffix));
         team.getPlayers().addAll(players);
-        player.sendPacket(FabricMultiVersion.createTeam(team));
+        player.sendPacket(FabricTAB.getVersion().registerTeam(team));
     }
 
     @Override
     public void unregisterTeam0(@NotNull String name) {
-        player.sendPacket(FabricMultiVersion.removeTeam(new PlayerTeam(dummyScoreboard, name)));
+        player.sendPacket(FabricTAB.getVersion().unregisterTeam(new PlayerTeam(dummyScoreboard, name)));
     }
 
     @Override
@@ -123,18 +90,35 @@ public class FabricScoreboard extends Scoreboard<FabricTabPlayer> {
         team.setColor(ChatFormatting.valueOf(EnumChatFormat.lastColorsOf(prefix).name()));
         team.setCollisionRule(Team.CollisionRule.valueOf(collision.name()));
         team.setNameTagVisibility(Team.Visibility.valueOf(visibility.name()));
-        team.setPlayerPrefix(player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(prefix), player.getVersion()));
-        team.setPlayerSuffix(player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(suffix), player.getVersion()));
-        player.sendPacket(FabricMultiVersion.updateTeam(team));
+        team.setPlayerPrefix(toComponent(prefix));
+        team.setPlayerSuffix(toComponent(suffix));
+        player.sendPacket(FabricTAB.getVersion().updateTeam(team));
     }
 
     @Override
-    public void setScore0(@NotNull String objective, @NotNull String playerName, int score) {
-        player.sendPacket(new ClientboundSetScorePacket(ServerScoreboard.Method.CHANGE, objective, playerName, score));
+    public void setScore0(@NotNull String objective, @NotNull String scoreHolder, int score,
+                          @Nullable IChatBaseComponent displayName, @Nullable IChatBaseComponent numberFormat) {
+        player.sendPacket(FabricTAB.getVersion().setScore(
+                objective,
+                scoreHolder,
+                score,
+                displayName == null ? null : toComponent(displayName),
+                numberFormat == null ? null : toComponent(numberFormat)
+        ));
     }
 
     @Override
-    public void removeScore0(@NotNull String objective, @NotNull String playerName) {
-        player.sendPacket(new ClientboundSetScorePacket(ServerScoreboard.Method.REMOVE, objective, playerName, 0));
+    public void removeScore0(@NotNull String objective, @NotNull String scoreHolder) {
+        player.sendPacket(FabricTAB.getVersion().removeScore(objective, scoreHolder));
+    }
+
+    @NotNull
+    private Component toComponent(@NotNull String string) {
+        return toComponent(IChatBaseComponent.optimizedComponent(string));
+    }
+
+    @NotNull
+    private Component toComponent(@NotNull IChatBaseComponent component) {
+        return player.getPlatform().toComponent(component, player.getVersion());
     }
 }

fabric/src/main/java/me/neznamy/tab/platforms/fabric/FabricTAB.java

@@ -1,26 +1,38 @@
 package me.neznamy.tab.platforms.fabric;
 
-import me.lucko.fabric.api.permissions.v0.Permissions;
+import lombok.Getter;
 import me.neznamy.tab.shared.TAB;
 import net.fabricmc.api.DedicatedServerModInitializer;
 import net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents;
-import net.fabricmc.loader.api.FabricLoader;
-import net.minecraft.commands.CommandSourceStack;
-import org.jetbrains.annotations.NotNull;
 
 public class FabricTAB implements DedicatedServerModInitializer {
 
-    private static final boolean fabricPermissionsApi = FabricLoader.getInstance().isModLoaded("fabric-permissions-api-v0");
+    @Getter
+    private static VersionLoader version;
 
     @Override
     public void onInitializeServer() {
-        FabricMultiVersion.registerCommand();
-        ServerLifecycleEvents.SERVER_STARTING.register(server -> TAB.create(new FabricPlatform(server)));
-        ServerLifecycleEvents.SERVER_STOPPING.register($ -> TAB.getInstance().unload());
-    }
-
-    public static boolean hasPermission(@NotNull CommandSourceStack source, @NotNull String permission) {
-        if (source.hasPermission(4)) return true;
-        return fabricPermissionsApi && Permissions.check(source, permission);
+        String[] modules = {
+                "v1_15_2", // 1.14.4, 1.15.2
+                "v1_16_5",
+                "v1_17_1", // 1.17, 1.17.1
+                "v1_18_2", // 1.18, 1.18.1, 1.18.2
+                "v1_19_2", // 1.19, 1.19.1, 1.19.2
+                "v1_19_3",
+                "v1_20_1", // 1.19.4, 1.20, 1.20.1
+                "v1_20_2",
+                "v1_20_4" // 1.20.3, 1.20.4
+        };
+        for (String module : modules) {
+            try {
+                version = (VersionLoader) Class.forName("me.neznamy.tab.platforms.fabric." + module + ".FabricTAB").getConstructor().newInstance();
+                if (!version.getSupportedVersions().contains(version.getServerVersion())) continue;
+                version.registerCommandCallback();
+                ServerLifecycleEvents.SERVER_STARTING.register(server -> TAB.create(new FabricPlatform(server)));
+                ServerLifecycleEvents.SERVER_STOPPING.register($ -> TAB.getInstance().unload());
+                return;
+            } catch (Throwable ignored) {}
+        }
+        throw new IllegalStateException("Your server version is marked as compatible, but a compatibility issue was found.");
     }
 }

fabric/src/main/java/me/neznamy/tab/platforms/fabric/FabricTabCommand.java

@@ -48,10 +48,10 @@ public class FabricTabCommand {
 
     private int executeCommand(@NotNull CommandSourceStack source, @NotNull String[] args) {
         if (TAB.getInstance().isPluginDisabled()) {
-            boolean hasReloadPermission = FabricTAB.hasPermission(source, TabConstants.Permission.COMMAND_RELOAD);
-            boolean hasAdminPermission = FabricTAB.hasPermission(source, TabConstants.Permission.COMMAND_ALL);
+            boolean hasReloadPermission = ((FabricPlatform)TAB.getInstance().getPlatform()).hasPermission(source, TabConstants.Permission.COMMAND_RELOAD);
+            boolean hasAdminPermission = ((FabricPlatform)TAB.getInstance().getPlatform()).hasPermission(source, TabConstants.Permission.COMMAND_ALL);
             for (String message : TAB.getInstance().getDisabledCommand().execute(args, hasReloadPermission, hasAdminPermission)) {
-                FabricMultiVersion.sendSystemMessage(source, ((FabricPlatform)TAB.getInstance().getPlatform()).toComponent(
+                FabricTAB.getVersion().sendMessage(source, ((FabricPlatform)TAB.getInstance().getPlatform()).toComponent(
                         IChatBaseComponent.optimizedComponent(message), TAB.getInstance().getServerVersion()));
             }
         } else {

fabric/src/main/java/me/neznamy/tab/platforms/fabric/FabricTabList.java

@@ -4,41 +4,49 @@ import com.mojang.authlib.GameProfile;
 import com.mojang.authlib.properties.Property;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
+import lombok.SneakyThrows;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
 import me.neznamy.tab.shared.platform.TabList;
 import net.minecraft.network.chat.Component;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
-import java.util.*;
+import java.util.UUID;
 
-public record FabricTabList(@NotNull FabricTabPlayer player) implements TabList {
+@RequiredArgsConstructor
+public class FabricTabList implements TabList {
+
+    @NotNull
+    private final FabricTabPlayer player;
 
     @Override
     public void removeEntry(@NotNull UUID entry) {
-        player.sendPacket(FabricMultiVersion.build(Action.REMOVE_PLAYER, new Builder(entry)));
+        player.sendPacket(FabricTAB.getVersion().build(Action.UPDATE_DISPLAY_NAME, new Builder(entry)));
     }
 
     @Override
     public void updateDisplayName(@NotNull UUID entry, @Nullable IChatBaseComponent displayName) {
-        player.sendPacket(FabricMultiVersion.build(Action.UPDATE_DISPLAY_NAME,
+        player.sendPacket(FabricTAB.getVersion().build(Action.UPDATE_DISPLAY_NAME,
                 new Builder(entry).setDisplayName(displayName == null ? null : player.getPlatform().toComponent(displayName, player.getVersion()))
         ));
     }
 
     @Override
     public void updateLatency(@NotNull UUID entry, int latency) {
-        player.sendPacket(FabricMultiVersion.build(Action.UPDATE_LATENCY, new Builder(entry).setLatency(latency)));
+        player.sendPacket(FabricTAB.getVersion().build(Action.UPDATE_LATENCY,
+                new Builder(entry).setLatency(latency)));
     }
 
     @Override
     public void updateGameMode(@NotNull UUID entry, int gameMode) {
-        player.sendPacket(FabricMultiVersion.build(Action.UPDATE_GAME_MODE, new Builder(entry).setGameMode(gameMode)));
+        player.sendPacket(FabricTAB.getVersion().build(Action.UPDATE_GAME_MODE,
+                new Builder(entry).setGameMode(gameMode)));
     }
 
     @Override
     public void addEntry(@NotNull Entry entry) {
-        player.sendPacket(FabricMultiVersion.build(Action.ADD_PLAYER, new Builder(entry.getUniqueId())
+        player.sendPacket(FabricTAB.getVersion().build(Action.ADD_PLAYER,
+                new Builder(entry.getUniqueId())
                 .setName(entry.getName())
                 .setSkin(entry.getSkin())
                 .setGameMode(entry.getGameMode())
@@ -48,11 +56,12 @@ public record FabricTabList(@NotNull FabricTabPlayer player) implements TabList
     }
 
     @Override
+    @SneakyThrows
     public void setPlayerListHeaderFooter(@NotNull IChatBaseComponent header, @NotNull IChatBaseComponent footer) {
-        player.getPlayer().connection.send(FabricMultiVersion.setHeaderFooter(
+        player.sendPacket(FabricTAB.getVersion().newHeaderFooter(
                 player.getPlatform().toComponent(header, player.getVersion()),
-                player.getPlatform().toComponent(footer, player.getVersion()))
-        );
+                player.getPlatform().toComponent(footer, player.getVersion())
+        ));
     }
 
     @RequiredArgsConstructor

fabric/src/main/java/me/neznamy/tab/platforms/fabric/FabricTabPlayer.java

@@ -7,7 +7,7 @@ import me.neznamy.tab.shared.backend.entityview.EntityView;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
 import me.neznamy.tab.shared.platform.Scoreboard;
 import me.neznamy.tab.shared.platform.TabList;
-import me.neznamy.tab.shared.platform.bossbar.BossBar;
+import me.neznamy.tab.shared.platform.BossBar;
 import net.minecraft.network.protocol.Packet;
 import net.minecraft.server.level.ServerPlayer;
 import org.jetbrains.annotations.NotNull;
@@ -31,22 +31,23 @@ public class FabricTabPlayer extends BackendTabPlayer {
     private final EntityView entityView = new FabricEntityView(this);
 
     public FabricTabPlayer(@NotNull FabricPlatform platform, @NotNull ServerPlayer player) {
-        super(platform, player, player.getUUID(), player.getGameProfile().getName(), FabricMultiVersion.getWorldName(player.level));
+        super(platform, player, player.getUUID(), player.getGameProfile().getName(),
+                FabricTAB.getVersion().getName(FabricTAB.getVersion().getLevel(player)));
     }
 
     @Override
     public boolean hasPermission(@NotNull String permission) {
-        return FabricTAB.hasPermission(getPlayer().createCommandSourceStack(), permission);
+        return getPlatform().hasPermission(getPlayer().createCommandSourceStack(), permission);
     }
 
     @Override
     public int getPing() {
-        return FabricMultiVersion.getPing(this);
+        return FabricTAB.getVersion().getPing(getPlayer());
     }
 
     @Override
     public void sendMessage(@NotNull IChatBaseComponent message) {
-        FabricMultiVersion.sendMessage(this, getPlatform().toComponent(message, getVersion()));
+        FabricTAB.getVersion().sendMessage(getPlayer(), getPlatform().toComponent(message, getVersion()));
     }
 
     @Override
@@ -64,8 +65,7 @@ public class FabricTabPlayer extends BackendTabPlayer {
     public TabList.Skin getSkin() {
         Collection<Property> properties = getPlayer().getGameProfile().getProperties().get(TabList.TEXTURES_PROPERTY);
         if (properties.isEmpty()) return null; // Offline mode
-        Property skinProperty = properties.iterator().next();
-        return FabricMultiVersion.propertyToSkin(skinProperty);
+        return FabricTAB.getVersion().propertyToSkin(properties.iterator().next());
     }
 
     @Override

fabric/src/main/java/me/neznamy/tab/platforms/fabric/VersionLoader.java

@@ -0,0 +1,90 @@
+package me.neznamy.tab.platforms.fabric;
+
+import com.mojang.authlib.properties.Property;
+import me.neznamy.tab.shared.backend.EntityData;
+import me.neznamy.tab.shared.backend.Location;
+import me.neznamy.tab.shared.features.injection.PipelineInjector;
+import me.neznamy.tab.shared.platform.TabList;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import net.minecraft.commands.CommandSourceStack;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.Packet;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.entity.decoration.ArmorStand;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.scores.Objective;
+import net.minecraft.world.scores.PlayerTeam;
+import net.minecraft.world.scores.Scoreboard;
+import net.minecraft.world.scores.criteria.ObjectiveCriteria.RenderType;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.List;
+import java.util.UUID;
+
+public interface VersionLoader {
+
+    Scoreboard dummyScoreboard = new Scoreboard();
+    ArmorStand dummyEntity = new ArmorStand(null, 0, 0, 0);
+
+    String getName(Level level);
+
+    int getPing(ServerPlayer player);
+
+    void sendMessage(ServerPlayer player, Component message);
+
+    TabList.Skin propertyToSkin(Property property);
+
+    void sendMessage(CommandSourceStack sender, Component message);
+
+    String getServerVersion();
+
+    double getMSPT();
+
+    Component deserialize(String string);
+
+    Packet<?> build(TabList.Action action, FabricTabList.Builder entry);
+
+    Level getLevel(ServerPlayer player);
+
+    boolean isSneaking(ServerPlayer player);
+
+    EntityData createDataWatcher(TabPlayer viewer, byte flags, String displayName, boolean nameVisible);
+
+    Packet<?> spawnEntity(int entityId, UUID id, Object entityType, Location location);
+
+    Packet<?> newEntityMetadata(int entityId, EntityData data);
+
+    boolean isSpawnPlayerPacket(Object packet);
+
+    int getSpawnedPlayer(Object spawnPacket);
+
+    int[] getDestroyedEntities(Object entityDestroyPacket);
+
+    boolean isBundlePacket(Object packet);
+
+    Iterable<Object> getPackets(Object bundlePacket);
+
+    PipelineInjector createPipelineInjector();
+
+    void destroyEntities(FabricTabPlayer player, int... entities);
+
+    void registerCommandCallback();
+
+    List<String> getSupportedVersions();
+
+    Packet<?> newHeaderFooter(Component header, Component footer);
+
+    Packet<?> setDisplaySlot(int slot, Objective objective);
+
+    Objective newObjective(String name, Component displayName, RenderType renderType, @Nullable Component numberFormat);
+
+    Packet<?> registerTeam(PlayerTeam team);
+
+    Packet<?> unregisterTeam(PlayerTeam team);
+
+    Packet<?> updateTeam(PlayerTeam team);
+
+    Packet<?> setScore(String objective, String scoreHolder, int score, Component displayName, @Nullable Component numberFormat);
+
+    Packet<?> removeScore(String objective, String scoreHolder);
+}

fabric/src/main/java/me/neznamy/tab/platforms/fabric/features/FabricNameTagX.java

@@ -1,10 +1,12 @@
 package me.neznamy.tab.platforms.fabric.features;
 
-import me.neznamy.tab.platforms.fabric.FabricMultiVersion;
+import me.neznamy.tab.platforms.fabric.FabricTAB;
 import me.neznamy.tab.platforms.fabric.FabricTabPlayer;
+import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.backend.EntityData;
 import me.neznamy.tab.shared.backend.features.unlimitedtags.BackendNameTagX;
 import me.neznamy.tab.shared.platform.TabPlayer;
+import net.fabricmc.fabric.api.entity.event.v1.ServerPlayerEvents;
 import net.minecraft.world.entity.Entity;
 import net.minecraft.world.entity.EntityType;
 import net.minecraft.world.phys.Vec3;
@@ -19,7 +21,13 @@ public class FabricNameTagX extends BackendNameTagX {
     public boolean enabled = true;
 
     public FabricNameTagX() {
-        FabricMultiVersion.registerNameTagXEvents(this);
+        if (TAB.getInstance().getServerVersion().getMinorVersion() >= 16) {
+            // Added in 1.16
+            ServerPlayerEvents.AFTER_RESPAWN.register((oldPlayer, newPlayer, alive) -> {
+                if (enabled) respawn(oldPlayer.getUUID());
+            });
+        } // TODO else
+        // TODO sneaking
     }
 
     @Override
@@ -31,7 +39,8 @@ public class FabricNameTagX extends BackendNameTagX {
 
     @Override
     public boolean areInSameWorld(@NotNull TabPlayer player1, @NotNull TabPlayer player2) {
-        return ((FabricTabPlayer)player1).getPlayer().level == ((FabricTabPlayer)player2).getPlayer().level;
+        return FabricTAB.getVersion().getLevel(((FabricTabPlayer)player1).getPlayer()) ==
+                FabricTAB.getVersion().getLevel(((FabricTabPlayer)player2).getPlayer());
     }
 
     @Override
@@ -69,7 +78,7 @@ public class FabricNameTagX extends BackendNameTagX {
 
     @Override
     public boolean isSneaking(@NotNull TabPlayer player) {
-        return FabricMultiVersion.isSneaking(((FabricTabPlayer)player).getPlayer());
+        return FabricTAB.getVersion().isSneaking(((FabricTabPlayer)player).getPlayer());
     }
 
     @Override
@@ -111,7 +120,7 @@ public class FabricNameTagX extends BackendNameTagX {
     @Override
     @NotNull
     public EntityData createDataWatcher(@NotNull TabPlayer viewer, byte flags, @NotNull String displayName, boolean nameVisible) {
-        return FabricMultiVersion.createDataWatcher(viewer, flags, displayName, nameVisible);
+        return FabricTAB.getVersion().createDataWatcher(viewer, flags, displayName, nameVisible);
     }
 
     @Override

fabric/src/main/resources/fabric.mod.json

@@ -10,12 +10,18 @@
     "server": ["me.neznamy.tab.platforms.fabric.FabricTAB"]
   },
   "depends": {
-    "fabricloader": ">=0.9.0",
     "fabric-api-base": "*",
-    "minecraft": "1.20.2"
+    "minecraft": [
+      "1.14.4",
+      "1.15.2",
+      "1.16.5",
+      "1.17", "1.17.1",
+      "1.18", "1.18.1", "1.18.2",
+      "1.19", "1.19.1", "1.19.2", "1.19.3", "1.19.4",
+      "1.20", "1.20.1", "1.20.2", "1.20.3", "1.20.4"
+    ]
   },
   "recommends": {
     "fabric-permissions-api-v0": "*"
-  },
-  "accessWidener": "tab.accesswidener"
+  }
 }

fabric/src/main/resources/tab.accesswidener

@@ -1,32 +0,0 @@
-accessWidener v1 named
-
-accessible field net/minecraft/network/protocol/game/ClientboundMoveEntityPacket entityId I
-accessible field net/minecraft/server/network/ServerGamePacketListenerImpl connection Lnet/minecraft/network/Connection;
-accessible field net/minecraft/network/Connection channel Lio/netty/channel/Channel;
-accessible field net/minecraft/network/protocol/game/ClientboundSetPlayerTeamPacket method I
-accessible field net/minecraft/network/protocol/game/ClientboundSetPlayerTeamPacket players Ljava/util/Collection;
-mutable field net/minecraft/network/protocol/game/ClientboundSetPlayerTeamPacket players Ljava/util/Collection;
-accessible field net/minecraft/server/network/ServerCommonPacketListenerImpl connection Lnet/minecraft/network/Connection;
-
-# 1.20+
-accessible field net/minecraft/world/entity/Entity level Lnet/minecraft/world/level/Level;
-
-# new
-accessible field net/minecraft/server/MinecraftServer LOGGER Lorg/slf4j/Logger;
-mutable field net/minecraft/server/MinecraftServer LOGGER Lorg/slf4j/Logger;
-
-# old (~1.16.5-?)
-accessible field net/minecraft/server/MinecraftServer LOGGER Lorg/apache/logging/log4j/Logger;
-mutable field net/minecraft/server/MinecraftServer LOGGER Lorg/apache/logging/log4j/Logger;
-
-# 1.19.3+
-accessible field net/minecraft/network/protocol/game/ClientboundPlayerInfoUpdatePacket entries Ljava/util/List;
-mutable field net/minecraft/network/protocol/game/ClientboundPlayerInfoUpdatePacket entries Ljava/util/List;
-
-# 1.19.2-
-accessible field net/minecraft/network/protocol/game/ClientboundPlayerInfoPacket entries Ljava/util/List;
-mutable field net/minecraft/network/protocol/game/ClientboundPlayerInfoPacket entries Ljava/util/List;
-
-# 1.16.5-
-accessible field net/minecraft/network/protocol/game/ClientboundTabListPacket header Lnet/minecraft/network/chat/Component;
-accessible field net/minecraft/network/protocol/game/ClientboundTabListPacket footer Lnet/minecraft/network/chat/Component;

fabric/v1_15_2/build.gradle.kts

@@ -0,0 +1,22 @@
+plugins {
+    id("fabric-loom")
+}
+
+repositories {
+    // Gradle doesn't support combining settings and project repositories, so we have to re-declare all the settings repos we need
+    maven("https://jitpack.io") // YamlAssist
+    maven("https://repo.opencollab.dev/maven-snapshots/")
+    maven("https://repo.viaversion.com/")
+    maven("https://oss.sonatype.org/content/repositories/snapshots")
+}
+
+dependencies {
+    implementation(projects.fabric)
+    minecraft("com.mojang:minecraft:1.15.2")
+    mappings(loom.officialMojangMappings())
+    modImplementation("net.fabricmc:fabric-loader:0.14.17")
+    val fabricApiVersion = "0.28.5+1.15"
+    modImplementation(fabricApi.module("fabric-api-base", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-lifecycle-events-v1", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-command-api-v1", fabricApiVersion))
+}

fabric/v1_15_2/src/main/java/me/neznamy/tab/platforms/fabric/v1_15_2/FabricPipelineInjector.java

@@ -0,0 +1,149 @@
+package me.neznamy.tab.platforms.fabric.v1_15_2;
+
+import com.mojang.authlib.GameProfile;
+import io.netty.channel.Channel;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.FabricTabPlayer;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.TabConstants;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.NettyPipelineInjector;
+import me.neznamy.tab.shared.features.nametags.NameTag;
+import me.neznamy.tab.shared.features.sorting.Sorting;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.minecraft.network.Connection;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.game.ClientboundPlayerInfoPacket;
+import net.minecraft.network.protocol.game.ClientboundPlayerInfoPacket.Action;
+import net.minecraft.network.protocol.game.ClientboundPlayerInfoPacket.PlayerUpdate;
+import net.minecraft.network.protocol.game.ClientboundSetDisplayObjectivePacket;
+import net.minecraft.network.protocol.game.ClientboundSetObjectivePacket;
+import net.minecraft.network.protocol.game.ClientboundSetPlayerTeamPacket;
+import net.minecraft.server.network.ServerGamePacketListenerImpl;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.reflect.Field;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+public class FabricPipelineInjector extends NettyPipelineInjector {
+
+    public FabricPipelineInjector() {
+        super("packet_handler");
+    }
+
+    @Override
+    @Nullable
+    @SneakyThrows
+    protected Channel getChannel(@NotNull TabPlayer player) {
+        Connection c = (Connection) ReflectionUtils.getFields(ServerGamePacketListenerImpl.class, Connection.class)
+                .get(0).get(((FabricTabPlayer)player).getPlayer().connection);
+        return (Channel) ReflectionUtils.getFields(Connection.class, Channel.class).get(0).get(c);
+    }
+
+    @Override
+    @SneakyThrows
+    public void onDisplayObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        // Getters are client only
+        int slot = ReflectionUtils.getFields(ClientboundSetDisplayObjectivePacket.class, int.class).get(0).getInt(packet);
+        String objective = (String) ReflectionUtils.getFields(ClientboundSetDisplayObjectivePacket.class, String.class).get(0).get(packet);
+        TAB.getInstance().getFeatureManager().onDisplayObjective(player, slot, objective);
+    }
+
+    @Override
+    @SneakyThrows
+    public void onObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        // Getters are client only
+        int action = ReflectionUtils.getFields(ClientboundSetObjectivePacket.class, int.class).get(0).getInt(packet);
+        String objective = (String) ReflectionUtils.getFields(ClientboundSetObjectivePacket.class, String.class).get(0).get(packet);
+        TAB.getInstance().getFeatureManager().onObjective(player, action, objective);
+    }
+
+    @Override
+    public boolean isDisplayObjective(@NotNull Object packet) {
+        return packet instanceof ClientboundSetDisplayObjectivePacket;
+    }
+
+    @Override
+    public boolean isObjective(@NotNull Object packet) {
+        return packet instanceof ClientboundSetObjectivePacket;
+    }
+
+    @Override
+    public boolean isTeam(@NotNull Object packet) {
+        return packet instanceof ClientboundSetPlayerTeamPacket;
+    }
+
+    @Override
+    public boolean isPlayerInfo(@NotNull Object packet) {
+        return packet instanceof ClientboundPlayerInfoPacket;
+    }
+
+    @Override
+    @SneakyThrows
+    @SuppressWarnings("unchecked")
+    public void onPlayerInfo(@NotNull TabPlayer receiver, @NotNull Object packet) {
+        // Getters are client only
+        Action action = (Action) ReflectionUtils.getFields(ClientboundPlayerInfoPacket.class, Action.class).get(0).get(packet);
+        List<PlayerUpdate> players = (List<PlayerUpdate>) ReflectionUtils.getFields(ClientboundPlayerInfoPacket.class, List.class).get(0).get(packet);
+        for (PlayerUpdate nmsData : players) {
+            GameProfile profile = nmsData.getProfile();
+            Field displayNameField = ReflectionUtils.getFields(PlayerUpdate.class, Component.class).get(0);
+            Field latencyField = ReflectionUtils.getFields(PlayerUpdate.class, int.class).get(0);
+            if (action == Action.UPDATE_DISPLAY_NAME) {
+                IChatBaseComponent newDisplayName = TAB.getInstance().getFeatureManager().onDisplayNameChange(receiver, profile.getId());
+                if (newDisplayName != null) displayNameField.set(nmsData, ((FabricTabPlayer)receiver).getPlatform().toComponent(newDisplayName, receiver.getVersion()));
+            }
+            if (action == Action.UPDATE_LATENCY) {
+                latencyField.set(nmsData, TAB.getInstance().getFeatureManager().onLatencyChange(receiver, profile.getId(), latencyField.getInt(nmsData)));
+            }
+            if (action == Action.ADD_PLAYER) {
+                TAB.getInstance().getFeatureManager().onEntryAdd(receiver, profile.getId(), profile.getName());
+            }
+        }
+    }
+
+    @Override
+    public boolean isLogin(@NotNull Object packet) {
+        return false;
+    }
+
+    @Override
+    @SneakyThrows
+    @SuppressWarnings("unchecked")
+    public void modifyPlayers(@NotNull Object teamPacket) {
+        if (TAB.getInstance().getNameTagManager() == null) return;
+        ClientboundSetPlayerTeamPacket packet = (ClientboundSetPlayerTeamPacket) teamPacket;
+        int action = ReflectionUtils.getInstanceFields(ClientboundSetPlayerTeamPacket.class, int.class).get(0).getInt(packet);
+        if (action == 1 || action == 2 || action == 4) return;
+        Field playersField = ReflectionUtils.getFields(ClientboundSetPlayerTeamPacket.class, Collection.class).get(0);
+        Collection<String> players = (Collection<String>) playersField.get(packet);
+        String teamName = String.valueOf(ReflectionUtils.getFields(ClientboundSetPlayerTeamPacket.class, String.class).get(0).get(packet));
+        if (players == null) return;
+        //creating a new list to prevent NoSuchFieldException in minecraft packet encoder when a player is removed
+        Collection<String> newList = new ArrayList<>();
+        for (String entry : players) {
+            TabPlayer p = getPlayer(entry);
+            if (p == null) {
+                newList.add(entry);
+                continue;
+            }
+            Sorting sorting = TAB.getInstance().getFeatureManager().getFeature(TabConstants.Feature.SORTING);
+            String expectedTeam = sorting.getShortTeamName(p);
+            if (expectedTeam == null) {
+                newList.add(entry);
+                continue;
+            }
+            if (!((NameTag)TAB.getInstance().getNameTagManager()).getDisableChecker().isDisabledPlayer(p) &&
+                    !TAB.getInstance().getNameTagManager().hasTeamHandlingPaused(p) && !teamName.equals(expectedTeam)) {
+                logTeamOverride(teamName, p.getName(), expectedTeam);
+            } else {
+                newList.add(entry);
+            }
+        }
+        playersField.set(packet, newList);
+    }
+}

fabric/v1_15_2/src/main/java/me/neznamy/tab/platforms/fabric/v1_15_2/FabricTAB.java

@@ -0,0 +1,227 @@
+package me.neznamy.tab.platforms.fabric.v1_15_2;
+
+import com.mojang.authlib.properties.Property;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.*;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.backend.EntityData;
+import me.neznamy.tab.shared.backend.Location;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.PipelineInjector;
+import me.neznamy.tab.shared.platform.Scoreboard;
+import me.neznamy.tab.shared.platform.TabList;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.fabricmc.fabric.api.command.v1.CommandRegistrationCallback;
+import net.minecraft.SharedConstants;
+import net.minecraft.commands.CommandSourceStack;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.Packet;
+import net.minecraft.network.protocol.game.*;
+import net.minecraft.network.syncher.EntityDataAccessor;
+import net.minecraft.network.syncher.EntityDataSerializers;
+import net.minecraft.network.syncher.SynchedEntityData;
+import net.minecraft.server.ServerScoreboard;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.level.GameType;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.scores.Objective;
+import net.minecraft.world.scores.PlayerTeam;
+import net.minecraft.world.scores.criteria.ObjectiveCriteria;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.reflect.Field;
+import java.util.*;
+
+public class FabricTAB implements VersionLoader {
+
+    @Override
+    public List<String> getSupportedVersions() {
+        return Arrays.asList("1.14.4", "1.15.2");
+    }
+
+    @Override
+    public String getName(Level level) {
+        return level.getLevelData().getLevelName() + level.dimension.getType().getFileSuffix();
+    }
+
+    @Override
+    public int getPing(ServerPlayer player) {
+        return player.latency;
+    }
+
+    @Override
+    public void sendMessage(ServerPlayer player, Component message) {
+        player.sendMessage(message);
+    }
+
+    @Override
+    public TabList.Skin propertyToSkin(Property property) {
+        return new TabList.Skin(property.getValue(), property.getSignature());
+    }
+
+    @Override
+    public void sendMessage(CommandSourceStack sender, Component message) {
+        sender.sendSuccess(message, false);
+    }
+
+    @Override
+    public String getServerVersion() {
+        return SharedConstants.getCurrentVersion().getName();
+    }
+
+    @Override
+    public double getMSPT() {
+        return ((FabricPlatform)TAB.getInstance().getPlatform()).getServer().getAverageTickTime();
+    }
+
+    @Override
+    public Component deserialize(String string) {
+        return Component.Serializer.fromJson(string);
+    }
+
+    @Override
+    @SneakyThrows
+    public Packet<?> build(TabList.Action action, FabricTabList.Builder entry) {
+        ClientboundPlayerInfoPacket packet = new ClientboundPlayerInfoPacket(ClientboundPlayerInfoPacket.Action.valueOf(action.name()), Collections.emptyList());
+        ReflectionUtils.getFields(ClientboundPlayerInfoPacket.class, List.class).get(0).set(packet,
+                Collections.singletonList(new ClientboundPlayerInfoPacket().new PlayerUpdate(
+                        entry.createProfile(),
+                        entry.getLatency(),
+                        GameType.byId(entry.getGameMode()),
+                        entry.getDisplayName()
+                )));
+        return packet;
+    }
+
+    @Override
+    public Level getLevel(ServerPlayer player) {
+        return player.level;
+    }
+
+    @Override
+    @SneakyThrows
+    public boolean isSneaking(ServerPlayer player) {
+        if (getServerVersion().equals("1.14.4")) {
+            return (boolean) player.getClass().getMethod("method_5715").invoke(player);
+        }
+
+        // 1.15.2
+        return player.isCrouching();
+    }
+
+    @Override
+    public EntityData createDataWatcher(TabPlayer viewer, byte flags, String displayName, boolean nameVisible) {
+        SynchedEntityData data = new SynchedEntityData(null);
+        data.define(new EntityDataAccessor<>(0, EntityDataSerializers.BYTE), flags);
+        data.define(new EntityDataAccessor<>(2, EntityDataSerializers.OPTIONAL_COMPONENT),
+                Optional.of(((FabricTabPlayer)viewer).getPlatform().toComponent(IChatBaseComponent.optimizedComponent(displayName), viewer.getVersion())));
+        data.define(new EntityDataAccessor<>(3, EntityDataSerializers.BOOLEAN), nameVisible);
+        int markerPosition = viewer.getPlatform().getServerVersion().getMinorVersion() >= 15 ? 14 : 13;
+        data.define(new EntityDataAccessor<>(markerPosition, EntityDataSerializers.BYTE), (byte)16);
+        return () -> data;
+    }
+
+    @Override
+    public Packet<?> spawnEntity(int entityId, UUID id, Object entityType, Location location) {
+        dummyEntity.setId(entityId);
+        dummyEntity.setUUID(id);
+        dummyEntity.setPos(location.getX(), location.getY(), location.getZ());
+        return new ClientboundAddMobPacket(dummyEntity);
+    }
+
+    @Override
+    public Packet<?> newEntityMetadata(int entityId, EntityData data) {
+        return new ClientboundSetEntityDataPacket(entityId, (SynchedEntityData) data.build(), true);
+    }
+
+    @Override
+    public boolean isSpawnPlayerPacket(Object packet) {
+        return packet instanceof ClientboundAddPlayerPacket;
+    }
+
+    @Override
+    @SneakyThrows
+    public int getSpawnedPlayer(Object spawnPacket) {
+        // Getter is client only
+        return ReflectionUtils.getFields(ClientboundAddPlayerPacket.class, int.class).get(0).getInt(spawnPacket);
+    }
+
+    @Override
+    @SneakyThrows
+    public int[] getDestroyedEntities(Object entityDestroyPacket) {
+        // Getter is client only
+        return (int[]) ReflectionUtils.getFields(ClientboundRemoveEntitiesPacket.class, int[].class).get(0).get(entityDestroyPacket);
+    }
+
+    @Override
+    public boolean isBundlePacket(Object packet) {
+        return false;
+    }
+
+    @Override
+    public Iterable<Object> getPackets(Object bundlePacket) {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public PipelineInjector createPipelineInjector() {
+        return new FabricPipelineInjector();
+    }
+
+    @Override
+    public void destroyEntities(FabricTabPlayer player, int... entities) {
+        player.sendPacket(new ClientboundRemoveEntitiesPacket(entities));
+    }
+
+    @Override
+    public void registerCommandCallback() {
+        CommandRegistrationCallback.EVENT.register((dispatcher, $) -> new FabricTabCommand().onRegisterCommands(dispatcher));
+    }
+
+    @Override
+    @SneakyThrows
+    public Packet<?> newHeaderFooter(Component header, Component footer) {
+        ClientboundTabListPacket packet = new ClientboundTabListPacket();
+        List<Field> fields = ReflectionUtils.getFields(ClientboundTabListPacket.class, Component.class);
+        fields.get(0).set(packet, header);
+        fields.get(1).set(packet, footer);
+        return packet;
+    }
+
+    @Override
+    public Packet<?> setDisplaySlot(int slot, Objective objective) {
+        return new ClientboundSetDisplayObjectivePacket(slot, objective);
+    }
+
+    @Override
+    public Objective newObjective(String name, Component displayName, ObjectiveCriteria.RenderType renderType,
+                                  @Nullable Component numberFormat) {
+        return new Objective(dummyScoreboard, name, ObjectiveCriteria.DUMMY, displayName, renderType);
+    }
+
+    @Override
+    public Packet<?> registerTeam(PlayerTeam team) {
+        return new ClientboundSetPlayerTeamPacket(team, Scoreboard.TeamAction.CREATE);
+    }
+
+    @Override
+    public Packet<?> unregisterTeam(PlayerTeam team) {
+        return new ClientboundSetPlayerTeamPacket(team, Scoreboard.TeamAction.REMOVE);
+    }
+
+    @Override
+    public Packet<?> updateTeam(PlayerTeam team) {
+        return new ClientboundSetPlayerTeamPacket(team, Scoreboard.TeamAction.UPDATE);
+    }
+
+    @Override
+    public Packet<?> setScore(String objective, String scoreHolder, int score, Component displayName, @Nullable Component numberFormat) {
+        return new ClientboundSetScorePacket(ServerScoreboard.Method.CHANGE, objective, scoreHolder, score);
+    }
+
+    @Override
+    public Packet<?> removeScore(String objective, String scoreHolder) {
+        return new ClientboundSetScorePacket(ServerScoreboard.Method.REMOVE, objective, scoreHolder, 0);
+    }
+}

fabric/v1_16_5/build.gradle.kts

@@ -0,0 +1,22 @@
+plugins {
+    id("fabric-loom")
+}
+
+repositories {
+    // Gradle doesn't support combining settings and project repositories, so we have to re-declare all the settings repos we need
+    maven("https://jitpack.io") // YamlAssist
+    maven("https://repo.opencollab.dev/maven-snapshots/")
+    maven("https://repo.viaversion.com/")
+    maven("https://oss.sonatype.org/content/repositories/snapshots")
+}
+
+dependencies {
+    implementation(projects.fabric)
+    minecraft("com.mojang:minecraft:1.16.5")
+    mappings(loom.officialMojangMappings())
+    modImplementation("net.fabricmc:fabric-loader:0.14.17")
+    val fabricApiVersion = "0.42.0+1.16"
+    modImplementation(fabricApi.module("fabric-api-base", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-lifecycle-events-v1", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-command-api-v1", fabricApiVersion))
+}

fabric/v1_16_5/src/main/java/me/neznamy/tab/platforms/fabric/v1_16_5/FabricPipelineInjector.java

@@ -0,0 +1,149 @@
+package me.neznamy.tab.platforms.fabric.v1_16_5;
+
+import com.mojang.authlib.GameProfile;
+import io.netty.channel.Channel;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.FabricTabPlayer;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.TabConstants;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.NettyPipelineInjector;
+import me.neznamy.tab.shared.features.nametags.NameTag;
+import me.neznamy.tab.shared.features.sorting.Sorting;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.minecraft.network.Connection;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.game.ClientboundPlayerInfoPacket;
+import net.minecraft.network.protocol.game.ClientboundPlayerInfoPacket.Action;
+import net.minecraft.network.protocol.game.ClientboundPlayerInfoPacket.PlayerUpdate;
+import net.minecraft.network.protocol.game.ClientboundSetDisplayObjectivePacket;
+import net.minecraft.network.protocol.game.ClientboundSetObjectivePacket;
+import net.minecraft.network.protocol.game.ClientboundSetPlayerTeamPacket;
+import net.minecraft.server.network.ServerGamePacketListenerImpl;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.reflect.Field;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+public class FabricPipelineInjector extends NettyPipelineInjector {
+
+    public FabricPipelineInjector() {
+        super("packet_handler");
+    }
+
+    @Override
+    @Nullable
+    @SneakyThrows
+    protected Channel getChannel(@NotNull TabPlayer player) {
+        Connection c = (Connection) ReflectionUtils.getFields(ServerGamePacketListenerImpl.class, Connection.class)
+                .get(0).get(((FabricTabPlayer)player).getPlayer().connection);
+        return (Channel) ReflectionUtils.getFields(Connection.class, Channel.class).get(0).get(c);
+    }
+
+    @Override
+    @SneakyThrows
+    public void onDisplayObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        // Getters are client only
+        int slot = ReflectionUtils.getFields(ClientboundSetDisplayObjectivePacket.class, int.class).get(0).getInt(packet);
+        String objective = (String) ReflectionUtils.getFields(ClientboundSetDisplayObjectivePacket.class, String.class).get(0).get(packet);
+        TAB.getInstance().getFeatureManager().onDisplayObjective(player, slot, objective);
+    }
+
+    @Override
+    @SneakyThrows
+    public void onObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        // Getters are client only
+        int action = ReflectionUtils.getFields(ClientboundSetObjectivePacket.class, int.class).get(0).getInt(packet);
+        String objective = (String) ReflectionUtils.getFields(ClientboundSetObjectivePacket.class, String.class).get(0).get(packet);
+        TAB.getInstance().getFeatureManager().onObjective(player, action, objective);
+    }
+
+    @Override
+    public boolean isDisplayObjective(@NotNull Object packet) {
+        return packet instanceof ClientboundSetDisplayObjectivePacket;
+    }
+
+    @Override
+    public boolean isObjective(@NotNull Object packet) {
+        return packet instanceof ClientboundSetObjectivePacket;
+    }
+
+    @Override
+    public boolean isTeam(@NotNull Object packet) {
+        return packet instanceof ClientboundSetPlayerTeamPacket;
+    }
+
+    @Override
+    public boolean isPlayerInfo(@NotNull Object packet) {
+        return packet instanceof ClientboundPlayerInfoPacket;
+    }
+
+    @Override
+    @SneakyThrows
+    @SuppressWarnings("unchecked")
+    public void onPlayerInfo(@NotNull TabPlayer receiver, @NotNull Object packet) {
+        // Getters are client only
+        Action action = (Action) ReflectionUtils.getFields(ClientboundPlayerInfoPacket.class, Action.class).get(0).get(packet);
+        List<PlayerUpdate> players = (List<PlayerUpdate>) ReflectionUtils.getFields(ClientboundPlayerInfoPacket.class, List.class).get(0).get(packet);
+        for (PlayerUpdate nmsData : players) {
+            GameProfile profile = nmsData.getProfile();
+            Field displayNameField = ReflectionUtils.getFields(PlayerUpdate.class, Component.class).get(0);
+            Field latencyField = ReflectionUtils.getFields(PlayerUpdate.class, int.class).get(0);
+            if (action == Action.UPDATE_DISPLAY_NAME) {
+                IChatBaseComponent newDisplayName = TAB.getInstance().getFeatureManager().onDisplayNameChange(receiver, profile.getId());
+                if (newDisplayName != null) displayNameField.set(nmsData, ((FabricTabPlayer)receiver).getPlatform().toComponent(newDisplayName, receiver.getVersion()));
+            }
+            if (action == Action.UPDATE_LATENCY) {
+                latencyField.set(nmsData, TAB.getInstance().getFeatureManager().onLatencyChange(receiver, profile.getId(), latencyField.getInt(nmsData)));
+            }
+            if (action == Action.ADD_PLAYER) {
+                TAB.getInstance().getFeatureManager().onEntryAdd(receiver, profile.getId(), profile.getName());
+            }
+        }
+    }
+
+    @Override
+    public boolean isLogin(@NotNull Object packet) {
+        return false;
+    }
+
+    @Override
+    @SneakyThrows
+    @SuppressWarnings("unchecked")
+    public void modifyPlayers(@NotNull Object teamPacket) {
+        if (TAB.getInstance().getNameTagManager() == null) return;
+        ClientboundSetPlayerTeamPacket packet = (ClientboundSetPlayerTeamPacket) teamPacket;
+        int action = ReflectionUtils.getInstanceFields(ClientboundSetPlayerTeamPacket.class, int.class).get(0).getInt(packet);
+        if (action == 1 || action == 2 || action == 4) return;
+        Field playersField = ReflectionUtils.getFields(ClientboundSetPlayerTeamPacket.class, Collection.class).get(0);
+        Collection<String> players = (Collection<String>) playersField.get(packet);
+        String teamName = String.valueOf(ReflectionUtils.getFields(ClientboundSetPlayerTeamPacket.class, String.class).get(0).get(packet));
+        if (players == null) return;
+        //creating a new list to prevent NoSuchFieldException in minecraft packet encoder when a player is removed
+        Collection<String> newList = new ArrayList<>();
+        for (String entry : players) {
+            TabPlayer p = getPlayer(entry);
+            if (p == null) {
+                newList.add(entry);
+                continue;
+            }
+            Sorting sorting = TAB.getInstance().getFeatureManager().getFeature(TabConstants.Feature.SORTING);
+            String expectedTeam = sorting.getShortTeamName(p);
+            if (expectedTeam == null) {
+                newList.add(entry);
+                continue;
+            }
+            if (!((NameTag)TAB.getInstance().getNameTagManager()).getDisableChecker().isDisabledPlayer(p) &&
+                    !TAB.getInstance().getNameTagManager().hasTeamHandlingPaused(p) && !teamName.equals(expectedTeam)) {
+                logTeamOverride(teamName, p.getName(), expectedTeam);
+            } else {
+                newList.add(entry);
+            }
+        }
+        playersField.set(packet, newList);
+    }
+}

fabric/v1_16_5/src/main/java/me/neznamy/tab/platforms/fabric/v1_16_5/FabricTAB.java

@@ -0,0 +1,234 @@
+package me.neznamy.tab.platforms.fabric.v1_16_5;
+
+import com.mojang.authlib.properties.Property;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.*;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.backend.EntityData;
+import me.neznamy.tab.shared.backend.Location;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.PipelineInjector;
+import me.neznamy.tab.shared.platform.Scoreboard;
+import me.neznamy.tab.shared.platform.TabList;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.fabricmc.fabric.api.command.v1.CommandRegistrationCallback;
+import net.minecraft.SharedConstants;
+import net.minecraft.commands.CommandSourceStack;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.Packet;
+import net.minecraft.network.protocol.game.*;
+import net.minecraft.network.syncher.EntityDataAccessor;
+import net.minecraft.network.syncher.EntityDataSerializers;
+import net.minecraft.network.syncher.SynchedEntityData;
+import net.minecraft.server.ServerScoreboard;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.level.GameType;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.storage.ServerLevelData;
+import net.minecraft.world.scores.Objective;
+import net.minecraft.world.scores.PlayerTeam;
+import net.minecraft.world.scores.criteria.ObjectiveCriteria;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.reflect.Field;
+import java.util.*;
+
+public class FabricTAB implements VersionLoader {
+
+    @Override
+    public List<String> getSupportedVersions() {
+        return Collections.singletonList("1.16.5");
+    }
+
+    @Override
+    public String getName(Level level) {
+        String path = level.dimension().location().getPath();
+        String dimensionSuffix;
+        switch (path) {
+            case "overworld":
+                dimensionSuffix = ""; // No suffix for overworld
+                break;
+            case "the_nether":
+                dimensionSuffix = "_nether";
+                break;
+            default:
+                dimensionSuffix = "_" + path; // End + default behavior for other dimensions created by mods
+                break;
+        }
+        return ((ServerLevelData)level.getLevelData()).getLevelName() + dimensionSuffix;
+    }
+
+    @Override
+    public int getPing(ServerPlayer player) {
+        return player.latency;
+    }
+
+    @Override
+    public void sendMessage(ServerPlayer player, Component message) {
+        player.sendMessage(message, new UUID(0, 0));
+    }
+
+    @Override
+    public TabList.Skin propertyToSkin(Property property) {
+        return new TabList.Skin(property.getValue(), property.getSignature());
+    }
+
+    @Override
+    public void sendMessage(CommandSourceStack sender, Component message) {
+        sender.sendSuccess(message, false);
+    }
+
+    @Override
+    public String getServerVersion() {
+        return SharedConstants.getCurrentVersion().getName();
+    }
+
+    @Override
+    public double getMSPT() {
+        return ((FabricPlatform)TAB.getInstance().getPlatform()).getServer().getAverageTickTime();
+    }
+
+    @Override
+    public Component deserialize(String string) {
+        return Component.Serializer.fromJson(string);
+    }
+
+    @Override
+    @SneakyThrows
+    public Packet<?> build(TabList.Action action, FabricTabList.Builder entry) {
+        ClientboundPlayerInfoPacket packet = new ClientboundPlayerInfoPacket(ClientboundPlayerInfoPacket.Action.valueOf(action.name()), Collections.emptyList());
+        ReflectionUtils.getFields(ClientboundPlayerInfoPacket.class, List.class).get(0).set(packet,
+                Collections.singletonList(new ClientboundPlayerInfoPacket().new PlayerUpdate(
+                        entry.createProfile(),
+                        entry.getLatency(),
+                        GameType.byId(entry.getGameMode()),
+                        entry.getDisplayName()
+                )));
+        return packet;
+    }
+
+    @Override
+    public Level getLevel(ServerPlayer player) {
+        return player.level;
+    }
+
+    @Override
+    public boolean isSneaking(ServerPlayer player) {
+        return player.isCrouching();
+    }
+
+    @Override
+    public EntityData createDataWatcher(TabPlayer viewer, byte flags, String displayName, boolean nameVisible) {
+        SynchedEntityData data = new SynchedEntityData(null);
+        data.define(new EntityDataAccessor<>(0, EntityDataSerializers.BYTE), flags);
+        data.define(new EntityDataAccessor<>(2, EntityDataSerializers.OPTIONAL_COMPONENT),
+                Optional.of(((FabricTabPlayer)viewer).getPlatform().toComponent(IChatBaseComponent.optimizedComponent(displayName), viewer.getVersion())));
+        data.define(new EntityDataAccessor<>(3, EntityDataSerializers.BOOLEAN), nameVisible);
+        data.define(new EntityDataAccessor<>(14, EntityDataSerializers.BYTE), (byte)16);
+        return () -> data;
+    }
+
+    @Override
+    public Packet<?> spawnEntity(int entityId, UUID id, Object entityType, Location location) {
+        dummyEntity.setId(entityId);
+        dummyEntity.setUUID(id);
+        dummyEntity.setPos(location.getX(), location.getY(), location.getZ());
+        return new ClientboundAddMobPacket(dummyEntity);
+    }
+
+    @Override
+    public Packet<?> newEntityMetadata(int entityId, EntityData data) {
+        return new ClientboundSetEntityDataPacket(entityId, (SynchedEntityData) data.build(), true);
+    }
+
+    @Override
+    public boolean isSpawnPlayerPacket(Object packet) {
+        return packet instanceof ClientboundAddPlayerPacket;
+    }
+
+    @Override
+    @SneakyThrows
+    public int getSpawnedPlayer(Object spawnPacket) {
+        // Getter is client only
+        return ReflectionUtils.getFields(ClientboundAddPlayerPacket.class, int.class).get(0).getInt(spawnPacket);
+    }
+
+    @Override
+    @SneakyThrows
+    public int[] getDestroyedEntities(Object entityDestroyPacket) {
+        // Getter is client only
+        return (int[]) ReflectionUtils.getFields(ClientboundRemoveEntitiesPacket.class, int[].class).get(0).get(entityDestroyPacket);
+    }
+
+    @Override
+    public boolean isBundlePacket(Object packet) {
+        return false;
+    }
+
+    @Override
+    public Iterable<Object> getPackets(Object bundlePacket) {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public PipelineInjector createPipelineInjector() {
+        return new FabricPipelineInjector();
+    }
+
+    @Override
+    public void destroyEntities(FabricTabPlayer player, int... entities) {
+        player.sendPacket(new ClientboundRemoveEntitiesPacket(entities));
+    }
+
+    @Override
+    public void registerCommandCallback() {
+        CommandRegistrationCallback.EVENT.register((dispatcher, $) -> new FabricTabCommand().onRegisterCommands(dispatcher));
+    }
+
+    @Override
+    @SneakyThrows
+    public Packet<?> newHeaderFooter(Component header, Component footer) {
+        ClientboundTabListPacket packet = new ClientboundTabListPacket();
+        List<Field> fields = ReflectionUtils.getFields(ClientboundTabListPacket.class, Component.class);
+        fields.get(0).set(packet, header);
+        fields.get(1).set(packet, footer);
+        return packet;
+    }
+
+    @Override
+    public Packet<?> setDisplaySlot(int slot, Objective objective) {
+        return new ClientboundSetDisplayObjectivePacket(slot, objective);
+    }
+
+    @Override
+    public Objective newObjective(String name, Component displayName, ObjectiveCriteria.RenderType renderType,
+                                  @Nullable Component numberFormat) {
+        return new Objective(dummyScoreboard, name, ObjectiveCriteria.DUMMY, displayName, renderType);
+    }
+
+    @Override
+    public Packet<?> registerTeam(PlayerTeam team) {
+        return new ClientboundSetPlayerTeamPacket(team, Scoreboard.TeamAction.CREATE);
+    }
+
+    @Override
+    public Packet<?> unregisterTeam(PlayerTeam team) {
+        return new ClientboundSetPlayerTeamPacket(team, Scoreboard.TeamAction.REMOVE);
+    }
+
+    @Override
+    public Packet<?> updateTeam(PlayerTeam team) {
+        return new ClientboundSetPlayerTeamPacket(team, Scoreboard.TeamAction.UPDATE);
+    }
+
+    @Override
+    public Packet<?> setScore(String objective, String scoreHolder, int score, Component displayName, @Nullable Component numberFormat) {
+        return new ClientboundSetScorePacket(ServerScoreboard.Method.CHANGE, objective, scoreHolder, score);
+    }
+
+    @Override
+    public Packet<?> removeScore(String objective, String scoreHolder) {
+        return new ClientboundSetScorePacket(ServerScoreboard.Method.REMOVE, objective, scoreHolder, 0);
+    }
+}

fabric/v1_17_1/build.gradle.kts

@@ -0,0 +1,28 @@
+plugins {
+    id("fabric-loom")
+}
+
+repositories {
+    // Gradle doesn't support combining settings and project repositories, so we have to re-declare all the settings repos we need
+    maven("https://jitpack.io") // YamlAssist
+    maven("https://repo.opencollab.dev/maven-snapshots/")
+    maven("https://repo.viaversion.com/")
+    maven("https://oss.sonatype.org/content/repositories/snapshots")
+}
+
+dependencies {
+    implementation(projects.fabric)
+    minecraft("com.mojang:minecraft:1.17.1")
+    mappings(loom.officialMojangMappings())
+    modImplementation("net.fabricmc:fabric-loader:0.14.17")
+    val fabricApiVersion = "0.46.1+1.17"
+    modImplementation(fabricApi.module("fabric-api-base", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-lifecycle-events-v1", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-command-api-v1", fabricApiVersion))
+}
+
+tasks {
+    compileJava {
+        options.release.set(17)
+    }
+}

fabric/v1_17_1/src/main/java/me/neznamy/tab/platforms/fabric/v1_17_1/FabricPipelineInjector.java

@@ -0,0 +1,137 @@
+package me.neznamy.tab.platforms.fabric.v1_17_1;
+
+import com.mojang.authlib.GameProfile;
+import io.netty.channel.Channel;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.FabricTabPlayer;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.TabConstants;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.NettyPipelineInjector;
+import me.neznamy.tab.shared.features.nametags.NameTag;
+import me.neznamy.tab.shared.features.sorting.Sorting;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.minecraft.network.Connection;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.game.ClientboundPlayerInfoPacket;
+import net.minecraft.network.protocol.game.ClientboundSetDisplayObjectivePacket;
+import net.minecraft.network.protocol.game.ClientboundSetObjectivePacket;
+import net.minecraft.network.protocol.game.ClientboundSetPlayerTeamPacket;
+import net.minecraft.server.network.ServerGamePacketListenerImpl;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.reflect.Field;
+import java.util.ArrayList;
+import java.util.Collection;
+
+public class FabricPipelineInjector extends NettyPipelineInjector {
+
+    public FabricPipelineInjector() {
+        super("packet_handler");
+    }
+
+    @Override
+    @Nullable
+    @SneakyThrows
+    protected Channel getChannel(@NotNull TabPlayer player) {
+        Connection c = (Connection) ReflectionUtils.getFields(ServerGamePacketListenerImpl.class, Connection.class)
+                .get(0).get(((FabricTabPlayer)player).getPlayer().connection);
+        return (Channel) ReflectionUtils.getFields(Connection.class, Channel.class).get(0).get(c);
+    }
+
+    @Override
+    public void onDisplayObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        TAB.getInstance().getFeatureManager().onDisplayObjective(player,
+                ((ClientboundSetDisplayObjectivePacket) packet).getSlot(),
+                String.valueOf(((ClientboundSetDisplayObjectivePacket)packet).getObjectiveName()));
+    }
+
+    @Override
+    public void onObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        TAB.getInstance().getFeatureManager().onObjective(player,
+                ((ClientboundSetObjectivePacket)packet).getMethod(),
+                ((ClientboundSetObjectivePacket)packet).getObjectiveName());
+    }
+
+    @Override
+    public boolean isDisplayObjective(@NotNull Object packet) {
+        return packet instanceof ClientboundSetDisplayObjectivePacket;
+    }
+
+    @Override
+    public boolean isObjective(@NotNull Object packet) {
+        return packet instanceof ClientboundSetObjectivePacket;
+    }
+
+    @Override
+    public boolean isTeam(@NotNull Object packet) {
+        return packet instanceof ClientboundSetPlayerTeamPacket;
+    }
+
+    @Override
+    public boolean isPlayerInfo(@NotNull Object packet) {
+        return packet instanceof ClientboundPlayerInfoPacket;
+    }
+
+    @Override
+    @SneakyThrows
+    public void onPlayerInfo(@NotNull TabPlayer receiver, @NotNull Object packet0) {
+        ClientboundPlayerInfoPacket packet = (ClientboundPlayerInfoPacket) packet0;
+        for (ClientboundPlayerInfoPacket.PlayerUpdate nmsData : packet.getEntries()) {
+            GameProfile profile = nmsData.getProfile();
+            Field displayNameField = ReflectionUtils.getFields(ClientboundPlayerInfoPacket.PlayerUpdate.class, Component.class).get(0);
+            Field latencyField = ReflectionUtils.getFields(ClientboundPlayerInfoPacket.PlayerUpdate.class, int.class).get(0);
+            if (packet.getAction() == ClientboundPlayerInfoPacket.Action.UPDATE_DISPLAY_NAME) {
+                IChatBaseComponent newDisplayName = TAB.getInstance().getFeatureManager().onDisplayNameChange(receiver, profile.getId());
+                if (newDisplayName != null) displayNameField.set(nmsData, ((FabricTabPlayer)receiver).getPlatform().toComponent(newDisplayName, receiver.getVersion()));
+            }
+            if (packet.getAction() == ClientboundPlayerInfoPacket.Action.UPDATE_LATENCY) {
+                latencyField.set(nmsData, TAB.getInstance().getFeatureManager().onLatencyChange(receiver, profile.getId(), latencyField.getInt(nmsData)));
+            }
+            if (packet.getAction() == ClientboundPlayerInfoPacket.Action.ADD_PLAYER) {
+                TAB.getInstance().getFeatureManager().onEntryAdd(receiver, profile.getId(), profile.getName());
+            }
+        }
+    }
+
+    @Override
+    public boolean isLogin(@NotNull Object packet) {
+        return false;
+    }
+
+    @Override
+    @SneakyThrows
+    public void modifyPlayers(@NotNull Object teamPacket) {
+        if (TAB.getInstance().getNameTagManager() == null) return;
+        ClientboundSetPlayerTeamPacket packet = (ClientboundSetPlayerTeamPacket) teamPacket;
+        int action = ReflectionUtils.getInstanceFields(ClientboundSetPlayerTeamPacket.class, int.class).get(0).getInt(packet);
+        if (action == 1 || action == 2 || action == 4) return;
+        Collection<String> players = packet.getPlayers();
+        String teamName = packet.getName();
+        if (players == null) return;
+        //creating a new list to prevent NoSuchFieldException in minecraft packet encoder when a player is removed
+        Collection<String> newList = new ArrayList<>();
+        for (String entry : players) {
+            TabPlayer p = getPlayer(entry);
+            if (p == null) {
+                newList.add(entry);
+                continue;
+            }
+            Sorting sorting = TAB.getInstance().getFeatureManager().getFeature(TabConstants.Feature.SORTING);
+            String expectedTeam = sorting.getShortTeamName(p);
+            if (expectedTeam == null) {
+                newList.add(entry);
+                continue;
+            }
+            if (!((NameTag)TAB.getInstance().getNameTagManager()).getDisableChecker().isDisabledPlayer(p) &&
+                    !TAB.getInstance().getNameTagManager().hasTeamHandlingPaused(p) && !teamName.equals(expectedTeam)) {
+                logTeamOverride(teamName, p.getName(), expectedTeam);
+            } else {
+                newList.add(entry);
+            }
+        }
+        ReflectionUtils.getFields(ClientboundSetPlayerTeamPacket.class, Collection.class).get(0).set(packet, newList);
+    }
+}

fabric/v1_17_1/src/main/java/me/neznamy/tab/platforms/fabric/v1_17_1/FabricTAB.java

@@ -0,0 +1,235 @@
+package me.neznamy.tab.platforms.fabric.v1_17_1;
+
+import com.mojang.authlib.properties.Property;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.*;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.backend.EntityData;
+import me.neznamy.tab.shared.backend.Location;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.PipelineInjector;
+import me.neznamy.tab.shared.platform.TabList;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.fabricmc.fabric.api.command.v1.CommandRegistrationCallback;
+import net.minecraft.SharedConstants;
+import net.minecraft.commands.CommandSourceStack;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.Packet;
+import net.minecraft.network.protocol.game.*;
+import net.minecraft.network.syncher.EntityDataAccessor;
+import net.minecraft.network.syncher.EntityDataSerializers;
+import net.minecraft.network.syncher.SynchedEntityData;
+import net.minecraft.server.ServerScoreboard;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.entity.EntityType;
+import net.minecraft.world.level.GameType;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.storage.ServerLevelData;
+import net.minecraft.world.phys.Vec3;
+import net.minecraft.world.scores.Objective;
+import net.minecraft.world.scores.PlayerTeam;
+import net.minecraft.world.scores.criteria.ObjectiveCriteria;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+public class FabricTAB implements VersionLoader {
+
+    @Override
+    public List<String> getSupportedVersions() {
+        return List.of("1.17", "1.17.1");
+    }
+
+    @Override
+    public String getName(Level level) {
+        String path = level.dimension().location().getPath();
+        String dimensionSuffix = switch (path) {
+            case "overworld" -> ""; // No suffix for overworld
+            case "the_nether" -> "_nether";
+            default -> "_" + path; // End + default behavior for other dimensions created by mods
+        };
+        return ((ServerLevelData)level.getLevelData()).getLevelName() + dimensionSuffix;
+    }
+
+    @Override
+    public int getPing(ServerPlayer player) {
+        return player.latency;
+    }
+
+    @Override
+    public void sendMessage(ServerPlayer player, Component message) {
+        player.sendMessage(message, new UUID(0, 0));
+    }
+
+    @Override
+    public TabList.Skin propertyToSkin(Property property) {
+        return new TabList.Skin(property.getValue(), property.getSignature());
+    }
+
+    @Override
+    public void sendMessage(CommandSourceStack sender, Component message) {
+        sender.sendSuccess(message, false);
+    }
+
+    @Override
+    public String getServerVersion() {
+        return SharedConstants.getCurrentVersion().getName();
+    }
+
+    @Override
+    public double getMSPT() {
+        return ((FabricPlatform)TAB.getInstance().getPlatform()).getServer().getAverageTickTime();
+    }
+
+    @Override
+    public Component deserialize(String string) {
+        return Component.Serializer.fromJson(string);
+    }
+
+    @Override
+    @SneakyThrows
+    public Packet<?> build(TabList.Action action, FabricTabList.Builder entry) {
+        ClientboundPlayerInfoPacket packet = new ClientboundPlayerInfoPacket(ClientboundPlayerInfoPacket.Action.valueOf(action.name()), Collections.emptyList());
+        ReflectionUtils.getFields(ClientboundPlayerInfoPacket.class, List.class).get(0).set(packet,
+                Collections.singletonList(new ClientboundPlayerInfoPacket.PlayerUpdate(
+                        entry.createProfile(),
+                        entry.getLatency(),
+                        GameType.byId(entry.getGameMode()),
+                        entry.getDisplayName()
+                )));
+        return packet;
+    }
+
+    @Override
+    public Level getLevel(ServerPlayer player) {
+        return player.level;
+    }
+
+    @Override
+    public boolean isSneaking(ServerPlayer player) {
+        return player.isCrouching();
+    }
+
+    @Override
+    public EntityData createDataWatcher(TabPlayer viewer, byte flags, String displayName, boolean nameVisible) {
+        SynchedEntityData data = new SynchedEntityData(null);
+        data.define(new EntityDataAccessor<>(0, EntityDataSerializers.BYTE), flags);
+        data.define(new EntityDataAccessor<>(2, EntityDataSerializers.OPTIONAL_COMPONENT),
+                Optional.of(((FabricTabPlayer)viewer).getPlatform().toComponent(IChatBaseComponent.optimizedComponent(displayName), viewer.getVersion())));
+        data.define(new EntityDataAccessor<>(3, EntityDataSerializers.BOOLEAN), nameVisible);
+        data.define(new EntityDataAccessor<>(15, EntityDataSerializers.BYTE), (byte)16);
+        return () -> data;
+    }
+
+    @Override
+    public Packet<?> spawnEntity(int entityId, UUID id, Object entityType, Location location) {
+        return new ClientboundAddEntityPacket(entityId, id, location.getX(), location.getY(), location.getZ(),
+                0, 0, (EntityType<?>) entityType, 0, Vec3.ZERO);
+    }
+
+    @Override
+    public Packet<?> newEntityMetadata(int entityId, EntityData data) {
+        return new ClientboundSetEntityDataPacket(entityId, (SynchedEntityData) data.build(), true);
+    }
+
+    @Override
+    public boolean isSpawnPlayerPacket(Object packet) {
+        return packet instanceof ClientboundAddPlayerPacket;
+    }
+
+    @Override
+    public int getSpawnedPlayer(Object spawnPacket) {
+        return ((ClientboundAddPlayerPacket) spawnPacket).getEntityId();
+    }
+
+    @Override
+    @SneakyThrows
+    public int[] getDestroyedEntities(Object packet) {
+        if (getServerVersion().equals("1.17")) {
+            return new int[]{(int) ReflectionUtils.getOnlyMethod(packet.getClass(), int.class).invoke(packet)};
+        }
+
+        // 1.17.1
+        return ((ClientboundRemoveEntitiesPacket) packet).getEntityIds().toIntArray();
+    }
+
+    @Override
+    public boolean isBundlePacket(Object packet) {
+        return false;
+    }
+
+    @Override
+    public Iterable<Object> getPackets(Object bundlePacket) {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public PipelineInjector createPipelineInjector() {
+        return new FabricPipelineInjector();
+    }
+
+    @Override
+    @SneakyThrows
+    public void destroyEntities(FabricTabPlayer player, int... entities) {
+        if (getServerVersion().equals("1.17")) {
+            for (int entity : entities) {
+                // While the actual packet name is different, fabric-mapped name is the same
+                player.sendPacket(ClientboundRemoveEntitiesPacket.class.getConstructor(int.class).newInstance(entity));
+            }
+            return;
+        }
+
+        // 1.17.1
+        player.sendPacket(new ClientboundRemoveEntitiesPacket(entities));
+    }
+
+    @Override
+    public void registerCommandCallback() {
+        CommandRegistrationCallback.EVENT.register((dispatcher, $) -> new FabricTabCommand().onRegisterCommands(dispatcher));
+    }
+
+    @Override
+    public Packet<?> newHeaderFooter(Component header, Component footer) {
+        return new ClientboundTabListPacket(header, footer);
+    }
+
+    @Override
+    public Packet<?> setDisplaySlot(int slot, Objective objective) {
+        return new ClientboundSetDisplayObjectivePacket(slot, objective);
+    }
+
+    @Override
+    public Objective newObjective(String name, Component displayName, ObjectiveCriteria.RenderType renderType,
+                                  @Nullable Component numberFormat) {
+        return new Objective(dummyScoreboard, name, ObjectiveCriteria.DUMMY, displayName, renderType);
+    }
+
+    @Override
+    public Packet<?> registerTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, true);
+    }
+
+    @Override
+    public Packet<?> unregisterTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createRemovePacket(team);
+    }
+
+    @Override
+    public Packet<?> updateTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, false);
+    }
+
+    @Override
+    public Packet<?> setScore(String objective, String scoreHolder, int score, Component displayName, @Nullable Component numberFormat) {
+        return new ClientboundSetScorePacket(ServerScoreboard.Method.CHANGE, objective, scoreHolder, score);
+    }
+
+    @Override
+    public Packet<?> removeScore(String objective, String scoreHolder) {
+        return new ClientboundSetScorePacket(ServerScoreboard.Method.REMOVE, objective, scoreHolder, 0);
+    }
+}

fabric/v1_18_2/build.gradle.kts

@@ -0,0 +1,28 @@
+plugins {
+    id("fabric-loom")
+}
+
+repositories {
+    // Gradle doesn't support combining settings and project repositories, so we have to re-declare all the settings repos we need
+    maven("https://jitpack.io") // YamlAssist
+    maven("https://repo.opencollab.dev/maven-snapshots/")
+    maven("https://repo.viaversion.com/")
+    maven("https://oss.sonatype.org/content/repositories/snapshots")
+}
+
+dependencies {
+    implementation(projects.fabric)
+    minecraft("com.mojang:minecraft:1.18.2")
+    mappings(loom.officialMojangMappings())
+    modImplementation("net.fabricmc:fabric-loader:0.14.17")
+    val fabricApiVersion = "0.76.0+1.18.2"
+    modImplementation(fabricApi.module("fabric-api-base", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-lifecycle-events-v1", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-command-api-v1", fabricApiVersion))
+}
+
+tasks {
+    compileJava {
+        options.release.set(17)
+    }
+}

fabric/v1_18_2/src/main/java/me/neznamy/tab/platforms/fabric/v1_18_2/FabricPipelineInjector.java

@@ -0,0 +1,137 @@
+package me.neznamy.tab.platforms.fabric.v1_18_2;
+
+import com.mojang.authlib.GameProfile;
+import io.netty.channel.Channel;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.FabricTabPlayer;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.TabConstants;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.NettyPipelineInjector;
+import me.neznamy.tab.shared.features.nametags.NameTag;
+import me.neznamy.tab.shared.features.sorting.Sorting;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.minecraft.network.Connection;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.game.ClientboundPlayerInfoPacket;
+import net.minecraft.network.protocol.game.ClientboundSetDisplayObjectivePacket;
+import net.minecraft.network.protocol.game.ClientboundSetObjectivePacket;
+import net.minecraft.network.protocol.game.ClientboundSetPlayerTeamPacket;
+import net.minecraft.server.network.ServerGamePacketListenerImpl;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.reflect.Field;
+import java.util.ArrayList;
+import java.util.Collection;
+
+public class FabricPipelineInjector extends NettyPipelineInjector {
+
+    public FabricPipelineInjector() {
+        super("packet_handler");
+    }
+
+    @Override
+    @Nullable
+    @SneakyThrows
+    protected Channel getChannel(@NotNull TabPlayer player) {
+        Connection c = (Connection) ReflectionUtils.getFields(ServerGamePacketListenerImpl.class, Connection.class)
+                .get(0).get(((FabricTabPlayer)player).getPlayer().connection);
+        return (Channel) ReflectionUtils.getFields(Connection.class, Channel.class).get(0).get(c);
+    }
+
+    @Override
+    public void onDisplayObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        TAB.getInstance().getFeatureManager().onDisplayObjective(player,
+                ((ClientboundSetDisplayObjectivePacket) packet).getSlot(),
+                String.valueOf(((ClientboundSetDisplayObjectivePacket)packet).getObjectiveName()));
+    }
+
+    @Override
+    public void onObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        TAB.getInstance().getFeatureManager().onObjective(player,
+                ((ClientboundSetObjectivePacket)packet).getMethod(),
+                ((ClientboundSetObjectivePacket)packet).getObjectiveName());
+    }
+
+    @Override
+    public boolean isDisplayObjective(@NotNull Object packet) {
+        return packet instanceof ClientboundSetDisplayObjectivePacket;
+    }
+
+    @Override
+    public boolean isObjective(@NotNull Object packet) {
+        return packet instanceof ClientboundSetObjectivePacket;
+    }
+
+    @Override
+    public boolean isTeam(@NotNull Object packet) {
+        return packet instanceof ClientboundSetPlayerTeamPacket;
+    }
+
+    @Override
+    public boolean isPlayerInfo(@NotNull Object packet) {
+        return packet instanceof ClientboundPlayerInfoPacket;
+    }
+
+    @Override
+    @SneakyThrows
+    public void onPlayerInfo(@NotNull TabPlayer receiver, @NotNull Object packet0) {
+        ClientboundPlayerInfoPacket packet = (ClientboundPlayerInfoPacket) packet0;
+        for (ClientboundPlayerInfoPacket.PlayerUpdate nmsData : packet.getEntries()) {
+            GameProfile profile = nmsData.getProfile();
+            Field displayNameField = ReflectionUtils.getFields(ClientboundPlayerInfoPacket.PlayerUpdate.class, Component.class).get(0);
+            Field latencyField = ReflectionUtils.getFields(ClientboundPlayerInfoPacket.PlayerUpdate.class, int.class).get(0);
+            if (packet.getAction() == ClientboundPlayerInfoPacket.Action.UPDATE_DISPLAY_NAME) {
+                IChatBaseComponent newDisplayName = TAB.getInstance().getFeatureManager().onDisplayNameChange(receiver, profile.getId());
+                if (newDisplayName != null) displayNameField.set(nmsData, ((FabricTabPlayer)receiver).getPlatform().toComponent(newDisplayName, receiver.getVersion()));
+            }
+            if (packet.getAction() == ClientboundPlayerInfoPacket.Action.UPDATE_LATENCY) {
+                latencyField.set(nmsData, TAB.getInstance().getFeatureManager().onLatencyChange(receiver, profile.getId(), latencyField.getInt(nmsData)));
+            }
+            if (packet.getAction() == ClientboundPlayerInfoPacket.Action.ADD_PLAYER) {
+                TAB.getInstance().getFeatureManager().onEntryAdd(receiver, profile.getId(), profile.getName());
+            }
+        }
+    }
+
+    @Override
+    public boolean isLogin(@NotNull Object packet) {
+        return false;
+    }
+
+    @Override
+    @SneakyThrows
+    public void modifyPlayers(@NotNull Object teamPacket) {
+        if (TAB.getInstance().getNameTagManager() == null) return;
+        ClientboundSetPlayerTeamPacket packet = (ClientboundSetPlayerTeamPacket) teamPacket;
+        int action = ReflectionUtils.getInstanceFields(ClientboundSetPlayerTeamPacket.class, int.class).get(0).getInt(packet);
+        if (action == 1 || action == 2 || action == 4) return;
+        Collection<String> players = packet.getPlayers();
+        String teamName = packet.getName();
+        if (players == null) return;
+        //creating a new list to prevent NoSuchFieldException in minecraft packet encoder when a player is removed
+        Collection<String> newList = new ArrayList<>();
+        for (String entry : players) {
+            TabPlayer p = getPlayer(entry);
+            if (p == null) {
+                newList.add(entry);
+                continue;
+            }
+            Sorting sorting = TAB.getInstance().getFeatureManager().getFeature(TabConstants.Feature.SORTING);
+            String expectedTeam = sorting.getShortTeamName(p);
+            if (expectedTeam == null) {
+                newList.add(entry);
+                continue;
+            }
+            if (!((NameTag)TAB.getInstance().getNameTagManager()).getDisableChecker().isDisabledPlayer(p) &&
+                    !TAB.getInstance().getNameTagManager().hasTeamHandlingPaused(p) && !teamName.equals(expectedTeam)) {
+                logTeamOverride(teamName, p.getName(), expectedTeam);
+            } else {
+                newList.add(entry);
+            }
+        }
+        ReflectionUtils.getFields(ClientboundSetPlayerTeamPacket.class, Collection.class).get(0).set(packet, newList);
+    }
+}

fabric/v1_18_2/src/main/java/me/neznamy/tab/platforms/fabric/v1_18_2/FabricTAB.java

@@ -0,0 +1,219 @@
+package me.neznamy.tab.platforms.fabric.v1_18_2;
+
+import com.mojang.authlib.properties.Property;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.*;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.backend.EntityData;
+import me.neznamy.tab.shared.backend.Location;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.PipelineInjector;
+import me.neznamy.tab.shared.platform.TabList;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.fabricmc.fabric.api.command.v1.CommandRegistrationCallback;
+import net.minecraft.SharedConstants;
+import net.minecraft.commands.CommandSourceStack;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.Packet;
+import net.minecraft.network.protocol.game.*;
+import net.minecraft.network.syncher.EntityDataAccessor;
+import net.minecraft.network.syncher.EntityDataSerializers;
+import net.minecraft.network.syncher.SynchedEntityData;
+import net.minecraft.server.ServerScoreboard;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.entity.EntityType;
+import net.minecraft.world.level.GameType;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.storage.ServerLevelData;
+import net.minecraft.world.phys.Vec3;
+import net.minecraft.world.scores.Objective;
+import net.minecraft.world.scores.PlayerTeam;
+import net.minecraft.world.scores.criteria.ObjectiveCriteria;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+public class FabricTAB implements VersionLoader {
+
+    @Override
+    public List<String> getSupportedVersions() {
+        return List.of("1.18", "1.18.1", "1.18.2");
+    }
+
+    @Override
+    public String getName(Level level) {
+        String path = level.dimension().location().getPath();
+        String dimensionSuffix = switch (path) {
+            case "overworld" -> ""; // No suffix for overworld
+            case "the_nether" -> "_nether";
+            default -> "_" + path; // End + default behavior for other dimensions created by mods
+        };
+        return ((ServerLevelData)level.getLevelData()).getLevelName() + dimensionSuffix;
+    }
+
+    @Override
+    public int getPing(ServerPlayer player) {
+        return player.latency;
+    }
+
+    @Override
+    public void sendMessage(ServerPlayer player, Component message) {
+        player.sendMessage(message, new UUID(0, 0));
+    }
+
+    @Override
+    public TabList.Skin propertyToSkin(Property property) {
+        return new TabList.Skin(property.getValue(), property.getSignature());
+    }
+
+    @Override
+    public void sendMessage(CommandSourceStack sender, Component message) {
+        sender.sendSuccess(message, false);
+    }
+
+    @Override
+    public String getServerVersion() {
+        return SharedConstants.getCurrentVersion().getName();
+    }
+
+    @Override
+    public double getMSPT() {
+        return ((FabricPlatform)TAB.getInstance().getPlatform()).getServer().getAverageTickTime();
+    }
+
+    @Override
+    public Component deserialize(String string) {
+        return Component.Serializer.fromJson(string);
+    }
+
+    @Override
+    @SneakyThrows
+    public Packet<?> build(TabList.Action action, FabricTabList.Builder entry) {
+        ClientboundPlayerInfoPacket packet = new ClientboundPlayerInfoPacket(ClientboundPlayerInfoPacket.Action.valueOf(action.name()), Collections.emptyList());
+        ReflectionUtils.getFields(ClientboundPlayerInfoPacket.class, List.class).get(0).set(packet,
+                Collections.singletonList(new ClientboundPlayerInfoPacket.PlayerUpdate(
+                        entry.createProfile(),
+                        entry.getLatency(),
+                        GameType.byId(entry.getGameMode()),
+                        entry.getDisplayName()
+                )));
+        return packet;
+    }
+
+    @Override
+    public Level getLevel(ServerPlayer player) {
+        return player.level;
+    }
+
+    @Override
+    public boolean isSneaking(ServerPlayer player) {
+        return player.isCrouching();
+    }
+
+    @Override
+    public EntityData createDataWatcher(TabPlayer viewer, byte flags, String displayName, boolean nameVisible) {
+        SynchedEntityData data = new SynchedEntityData(null);
+        data.define(new EntityDataAccessor<>(0, EntityDataSerializers.BYTE), flags);
+        data.define(new EntityDataAccessor<>(2, EntityDataSerializers.OPTIONAL_COMPONENT),
+                Optional.of(((FabricTabPlayer)viewer).getPlatform().toComponent(IChatBaseComponent.optimizedComponent(displayName), viewer.getVersion())));
+        data.define(new EntityDataAccessor<>(3, EntityDataSerializers.BOOLEAN), nameVisible);
+        data.define(new EntityDataAccessor<>(15, EntityDataSerializers.BYTE), (byte)16);
+        return () -> data;
+    }
+
+    @Override
+    public Packet<?> spawnEntity(int entityId, UUID id, Object entityType, Location location) {
+        return new ClientboundAddEntityPacket(entityId, id, location.getX(), location.getY(), location.getZ(),
+                0, 0, (EntityType<?>) entityType, 0, Vec3.ZERO);
+    }
+
+    @Override
+    public Packet<?> newEntityMetadata(int entityId, EntityData data) {
+        return new ClientboundSetEntityDataPacket(entityId, (SynchedEntityData) data.build(), true);
+    }
+
+    @Override
+    public boolean isSpawnPlayerPacket(Object packet) {
+        return packet instanceof ClientboundAddPlayerPacket;
+    }
+
+    @Override
+    public int getSpawnedPlayer(Object spawnPacket) {
+        return ((ClientboundAddPlayerPacket) spawnPacket).getEntityId();
+    }
+
+    @Override
+    public int[] getDestroyedEntities(Object entityDestroyPacket) {
+        return ((ClientboundRemoveEntitiesPacket) entityDestroyPacket).getEntityIds().toIntArray();
+    }
+
+    @Override
+    public boolean isBundlePacket(Object packet) {
+        return false;
+    }
+
+    @Override
+    public Iterable<Object> getPackets(Object bundlePacket) {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public PipelineInjector createPipelineInjector() {
+        return new FabricPipelineInjector();
+    }
+
+    @Override
+    public void destroyEntities(FabricTabPlayer player, int... entities) {
+        player.sendPacket(new ClientboundRemoveEntitiesPacket(entities));
+    }
+
+    @Override
+    public void registerCommandCallback() {
+        CommandRegistrationCallback.EVENT.register((dispatcher, $) -> new FabricTabCommand().onRegisterCommands(dispatcher));
+    }
+
+    @Override
+    public Packet<?> newHeaderFooter(Component header, Component footer) {
+        return new ClientboundTabListPacket(header, footer);
+    }
+
+    @Override
+    public Packet<?> setDisplaySlot(int slot, Objective objective) {
+        return new ClientboundSetDisplayObjectivePacket(slot, objective);
+    }
+
+    @Override
+    public Objective newObjective(String name, Component displayName, ObjectiveCriteria.RenderType renderType,
+                                  @Nullable Component numberFormat) {
+        return new Objective(dummyScoreboard, name, ObjectiveCriteria.DUMMY, displayName, renderType);
+    }
+
+    @Override
+    public Packet<?> registerTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, true);
+    }
+
+    @Override
+    public Packet<?> unregisterTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createRemovePacket(team);
+    }
+
+    @Override
+    public Packet<?> updateTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, false);
+    }
+
+    @Override
+    public Packet<?> setScore(String objective, String scoreHolder, int score, Component displayName, @Nullable Component numberFormat) {
+        return new ClientboundSetScorePacket(ServerScoreboard.Method.CHANGE, objective, scoreHolder, score);
+    }
+
+    @Override
+    public Packet<?> removeScore(String objective, String scoreHolder) {
+        return new ClientboundSetScorePacket(ServerScoreboard.Method.REMOVE, objective, scoreHolder, 0);
+    }
+}

fabric/v1_19_2/build.gradle.kts

@@ -0,0 +1,28 @@
+plugins {
+    id("fabric-loom")
+}
+
+repositories {
+    // Gradle doesn't support combining settings and project repositories, so we have to re-declare all the settings repos we need
+    maven("https://jitpack.io") // YamlAssist
+    maven("https://repo.opencollab.dev/maven-snapshots/")
+    maven("https://repo.viaversion.com/")
+    maven("https://oss.sonatype.org/content/repositories/snapshots")
+}
+
+dependencies {
+    implementation(projects.fabric)
+    minecraft("com.mojang:minecraft:1.19.2")
+    mappings(loom.officialMojangMappings())
+    modImplementation("net.fabricmc:fabric-loader:0.14.17")
+    val fabricApiVersion = "0.76.0+1.19.2"
+    modImplementation(fabricApi.module("fabric-api-base", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-lifecycle-events-v1", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-command-api-v2", fabricApiVersion))
+}
+
+tasks {
+    compileJava {
+        options.release.set(17)
+    }
+}

fabric/v1_19_2/src/main/java/me/neznamy/tab/platforms/fabric/v1_19_2/FabricPipelineInjector.java

@@ -0,0 +1,137 @@
+package me.neznamy.tab.platforms.fabric.v1_19_2;
+
+import com.mojang.authlib.GameProfile;
+import io.netty.channel.Channel;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.FabricTabPlayer;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.TabConstants;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.NettyPipelineInjector;
+import me.neznamy.tab.shared.features.nametags.NameTag;
+import me.neznamy.tab.shared.features.sorting.Sorting;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.minecraft.network.Connection;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.game.ClientboundPlayerInfoPacket;
+import net.minecraft.network.protocol.game.ClientboundSetDisplayObjectivePacket;
+import net.minecraft.network.protocol.game.ClientboundSetObjectivePacket;
+import net.minecraft.network.protocol.game.ClientboundSetPlayerTeamPacket;
+import net.minecraft.server.network.ServerGamePacketListenerImpl;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.reflect.Field;
+import java.util.ArrayList;
+import java.util.Collection;
+
+public class FabricPipelineInjector extends NettyPipelineInjector {
+
+    public FabricPipelineInjector() {
+        super("packet_handler");
+    }
+
+    @Override
+    @Nullable
+    @SneakyThrows
+    protected Channel getChannel(@NotNull TabPlayer player) {
+        Connection c = (Connection) ReflectionUtils.getFields(ServerGamePacketListenerImpl.class, Connection.class)
+                .get(0).get(((FabricTabPlayer)player).getPlayer().connection);
+        return (Channel) ReflectionUtils.getFields(Connection.class, Channel.class).get(0).get(c);
+    }
+
+    @Override
+    public void onDisplayObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        TAB.getInstance().getFeatureManager().onDisplayObjective(player,
+                ((ClientboundSetDisplayObjectivePacket) packet).getSlot(),
+                String.valueOf(((ClientboundSetDisplayObjectivePacket)packet).getObjectiveName()));
+    }
+
+    @Override
+    public void onObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        TAB.getInstance().getFeatureManager().onObjective(player,
+                ((ClientboundSetObjectivePacket)packet).getMethod(),
+                ((ClientboundSetObjectivePacket)packet).getObjectiveName());
+    }
+
+    @Override
+    public boolean isDisplayObjective(@NotNull Object packet) {
+        return packet instanceof ClientboundSetDisplayObjectivePacket;
+    }
+
+    @Override
+    public boolean isObjective(@NotNull Object packet) {
+        return packet instanceof ClientboundSetObjectivePacket;
+    }
+
+    @Override
+    public boolean isTeam(@NotNull Object packet) {
+        return packet instanceof ClientboundSetPlayerTeamPacket;
+    }
+
+    @Override
+    public boolean isPlayerInfo(@NotNull Object packet) {
+        return packet instanceof ClientboundPlayerInfoPacket;
+    }
+
+    @Override
+    @SneakyThrows
+    public void onPlayerInfo(@NotNull TabPlayer receiver, @NotNull Object packet0) {
+        ClientboundPlayerInfoPacket packet = (ClientboundPlayerInfoPacket) packet0;
+        for (ClientboundPlayerInfoPacket.PlayerUpdate nmsData : packet.getEntries()) {
+            GameProfile profile = nmsData.getProfile();
+            Field displayNameField = ReflectionUtils.getFields(ClientboundPlayerInfoPacket.PlayerUpdate.class, Component.class).get(0);
+            Field latencyField = ReflectionUtils.getFields(ClientboundPlayerInfoPacket.PlayerUpdate.class, int.class).get(0);
+            if (packet.getAction() == ClientboundPlayerInfoPacket.Action.UPDATE_DISPLAY_NAME) {
+                IChatBaseComponent newDisplayName = TAB.getInstance().getFeatureManager().onDisplayNameChange(receiver, profile.getId());
+                if (newDisplayName != null) displayNameField.set(nmsData, ((FabricTabPlayer)receiver).getPlatform().toComponent(newDisplayName, receiver.getVersion()));
+            }
+            if (packet.getAction() == ClientboundPlayerInfoPacket.Action.UPDATE_LATENCY) {
+                latencyField.set(nmsData, TAB.getInstance().getFeatureManager().onLatencyChange(receiver, profile.getId(), latencyField.getInt(nmsData)));
+            }
+            if (packet.getAction() == ClientboundPlayerInfoPacket.Action.ADD_PLAYER) {
+                TAB.getInstance().getFeatureManager().onEntryAdd(receiver, profile.getId(), profile.getName());
+            }
+         }
+    }
+
+    @Override
+    public boolean isLogin(@NotNull Object packet) {
+        return false;
+    }
+
+    @Override
+    @SneakyThrows
+    public void modifyPlayers(@NotNull Object teamPacket) {
+        if (TAB.getInstance().getNameTagManager() == null) return;
+        ClientboundSetPlayerTeamPacket packet = (ClientboundSetPlayerTeamPacket) teamPacket;
+        int action = ReflectionUtils.getInstanceFields(ClientboundSetPlayerTeamPacket.class, int.class).get(0).getInt(packet);
+        if (action == 1 || action == 2 || action == 4) return;
+        Collection<String> players = packet.getPlayers();
+        String teamName = packet.getName();
+        if (players == null) return;
+        //creating a new list to prevent NoSuchFieldException in minecraft packet encoder when a player is removed
+        Collection<String> newList = new ArrayList<>();
+        for (String entry : players) {
+            TabPlayer p = getPlayer(entry);
+            if (p == null) {
+                newList.add(entry);
+                continue;
+            }
+            Sorting sorting = TAB.getInstance().getFeatureManager().getFeature(TabConstants.Feature.SORTING);
+            String expectedTeam = sorting.getShortTeamName(p);
+            if (expectedTeam == null) {
+                newList.add(entry);
+                continue;
+            }
+            if (!((NameTag)TAB.getInstance().getNameTagManager()).getDisableChecker().isDisabledPlayer(p) &&
+                    !TAB.getInstance().getNameTagManager().hasTeamHandlingPaused(p) && !teamName.equals(expectedTeam)) {
+                logTeamOverride(teamName, p.getName(), expectedTeam);
+            } else {
+                newList.add(entry);
+            }
+        }
+        ReflectionUtils.getFields(ClientboundSetPlayerTeamPacket.class, Collection.class).get(0).set(packet, newList);
+    }
+}

fabric/v1_19_2/src/main/java/me/neznamy/tab/platforms/fabric/v1_19_2/FabricTAB.java

@@ -0,0 +1,220 @@
+package me.neznamy.tab.platforms.fabric.v1_19_2;
+
+import com.mojang.authlib.properties.Property;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.*;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.backend.EntityData;
+import me.neznamy.tab.shared.backend.Location;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.PipelineInjector;
+import me.neznamy.tab.shared.platform.TabList;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback;
+import net.minecraft.SharedConstants;
+import net.minecraft.commands.CommandSourceStack;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.Packet;
+import net.minecraft.network.protocol.game.*;
+import net.minecraft.network.syncher.EntityDataAccessor;
+import net.minecraft.network.syncher.EntityDataSerializers;
+import net.minecraft.network.syncher.SynchedEntityData;
+import net.minecraft.server.ServerScoreboard;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.entity.EntityType;
+import net.minecraft.world.level.GameType;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.storage.ServerLevelData;
+import net.minecraft.world.phys.Vec3;
+import net.minecraft.world.scores.Objective;
+import net.minecraft.world.scores.PlayerTeam;
+import net.minecraft.world.scores.criteria.ObjectiveCriteria;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+public class FabricTAB implements VersionLoader {
+
+    @Override
+    public List<String> getSupportedVersions() {
+        return List.of("1.19", "1.19.1", "1.19.2");
+    }
+
+    @Override
+    public String getName(Level level) {
+        String path = level.dimension().location().getPath();
+        String dimensionSuffix = switch (path) {
+            case "overworld" -> ""; // No suffix for overworld
+            case "the_nether" -> "_nether";
+            default -> "_" + path; // End + default behavior for other dimensions created by mods
+        };
+        return ((ServerLevelData)level.getLevelData()).getLevelName() + dimensionSuffix;
+    }
+
+    @Override
+    public int getPing(ServerPlayer player) {
+        return player.latency;
+    }
+
+    @Override
+    public void sendMessage(ServerPlayer player, Component message) {
+        player.sendSystemMessage(message);
+    }
+
+    @Override
+    public TabList.Skin propertyToSkin(Property property) {
+        return new TabList.Skin(property.getValue(), property.getSignature());
+    }
+
+    @Override
+    public void sendMessage(CommandSourceStack sender, Component message) {
+        sender.sendSystemMessage(message);
+    }
+
+    @Override
+    public String getServerVersion() {
+        return SharedConstants.getCurrentVersion().getName();
+    }
+
+    @Override
+    public double getMSPT() {
+        return ((FabricPlatform)TAB.getInstance().getPlatform()).getServer().getAverageTickTime();
+    }
+
+    @Override
+    public Component deserialize(String string) {
+        return Component.Serializer.fromJson(string);
+    }
+
+    @Override
+    @SneakyThrows
+    public Packet<?> build(TabList.Action action, FabricTabList.Builder entry) {
+        ClientboundPlayerInfoPacket packet = new ClientboundPlayerInfoPacket(ClientboundPlayerInfoPacket.Action.valueOf(action.name()), Collections.emptyList());
+        ReflectionUtils.getFields(ClientboundPlayerInfoPacket.class, List.class).get(0).set(packet,
+                Collections.singletonList(new ClientboundPlayerInfoPacket.PlayerUpdate(
+                        entry.createProfile(),
+                        entry.getLatency(),
+                        GameType.byId(entry.getGameMode()),
+                        entry.getDisplayName(),
+                        null
+                )));
+        return packet;
+    }
+
+    @Override
+    public Level getLevel(ServerPlayer player) {
+        return player.level;
+    }
+
+    @Override
+    public boolean isSneaking(ServerPlayer player) {
+        return player.isCrouching();
+    }
+
+    @Override
+    public EntityData createDataWatcher(TabPlayer viewer, byte flags, String displayName, boolean nameVisible) {
+        SynchedEntityData data = new SynchedEntityData(null);
+        data.define(new EntityDataAccessor<>(0, EntityDataSerializers.BYTE), flags);
+        data.define(new EntityDataAccessor<>(2, EntityDataSerializers.OPTIONAL_COMPONENT),
+                Optional.of(((FabricTabPlayer)viewer).getPlatform().toComponent(IChatBaseComponent.optimizedComponent(displayName), viewer.getVersion())));
+        data.define(new EntityDataAccessor<>(3, EntityDataSerializers.BOOLEAN), nameVisible);
+        data.define(new EntityDataAccessor<>(15, EntityDataSerializers.BYTE), (byte)16);
+        return () -> data;
+    }
+
+    @Override
+    public Packet<?> spawnEntity(int entityId, UUID id, Object entityType, Location location) {
+        return new ClientboundAddEntityPacket(entityId, id, location.getX(), location.getY(), location.getZ(),
+                0, 0, (EntityType<?>) entityType, 0, Vec3.ZERO, 0);
+    }
+
+    @Override
+    public Packet<?> newEntityMetadata(int entityId, EntityData data) {
+        return new ClientboundSetEntityDataPacket(entityId, (SynchedEntityData) data.build(), true);
+    }
+
+    @Override
+    public boolean isSpawnPlayerPacket(Object packet) {
+        return packet instanceof ClientboundAddPlayerPacket;
+    }
+
+    @Override
+    public int getSpawnedPlayer(Object spawnPacket) {
+        return ((ClientboundAddPlayerPacket) spawnPacket).getEntityId();
+    }
+
+    @Override
+    public int[] getDestroyedEntities(Object entityDestroyPacket) {
+        return ((ClientboundRemoveEntitiesPacket) entityDestroyPacket).getEntityIds().toIntArray();
+    }
+
+    @Override
+    public boolean isBundlePacket(Object packet) {
+        return false;
+    }
+
+    @Override
+    public Iterable<Object> getPackets(Object bundlePacket) {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public PipelineInjector createPipelineInjector() {
+        return new FabricPipelineInjector();
+    }
+
+    @Override
+    public void destroyEntities(FabricTabPlayer player, int... entities) {
+        player.sendPacket(new ClientboundRemoveEntitiesPacket(entities));
+    }
+
+    @Override
+    public void registerCommandCallback() {
+        CommandRegistrationCallback.EVENT.register((dispatcher, $, $$) -> new FabricTabCommand().onRegisterCommands(dispatcher));
+    }
+
+    @Override
+    public Packet<?> newHeaderFooter(Component header, Component footer) {
+        return new ClientboundTabListPacket(header, footer);
+    }
+
+    @Override
+    public Packet<?> setDisplaySlot(int slot, Objective objective) {
+        return new ClientboundSetDisplayObjectivePacket(slot, objective);
+    }
+
+    @Override
+    public Objective newObjective(String name, Component displayName, ObjectiveCriteria.RenderType renderType,
+                                  @Nullable Component numberFormat) {
+        return new Objective(dummyScoreboard, name, ObjectiveCriteria.DUMMY, displayName, renderType);
+    }
+
+    @Override
+    public Packet<?> registerTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, true);
+    }
+
+    @Override
+    public Packet<?> unregisterTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createRemovePacket(team);
+    }
+
+    @Override
+    public Packet<?> updateTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, false);
+    }
+
+    @Override
+    public Packet<?> setScore(String objective, String scoreHolder, int score, Component displayName, @Nullable Component numberFormat) {
+        return new ClientboundSetScorePacket(ServerScoreboard.Method.CHANGE, objective, scoreHolder, score);
+    }
+
+    @Override
+    public Packet<?> removeScore(String objective, String scoreHolder) {
+        return new ClientboundSetScorePacket(ServerScoreboard.Method.REMOVE, objective, scoreHolder, 0);
+    }
+}

fabric/v1_19_3/build.gradle.kts

@@ -0,0 +1,28 @@
+plugins {
+    id("fabric-loom")
+}
+
+repositories {
+    // Gradle doesn't support combining settings and project repositories, so we have to re-declare all the settings repos we need
+    maven("https://jitpack.io") // YamlAssist
+    maven("https://repo.opencollab.dev/maven-snapshots/")
+    maven("https://repo.viaversion.com/")
+    maven("https://oss.sonatype.org/content/repositories/snapshots")
+}
+
+dependencies {
+    implementation(projects.fabric)
+    minecraft("com.mojang:minecraft:1.19.3")
+    mappings(loom.officialMojangMappings())
+    modImplementation("net.fabricmc:fabric-loader:0.14.17")
+    val fabricApiVersion = "0.76.0+1.19.3"
+    modImplementation(fabricApi.module("fabric-api-base", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-lifecycle-events-v1", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-command-api-v2", fabricApiVersion))
+}
+
+tasks {
+    compileJava {
+        options.release.set(17)
+    }
+}

fabric/v1_19_3/src/main/java/me/neznamy/tab/platforms/fabric/v1_19_3/FabricPipelineInjector.java

@@ -1,7 +1,9 @@
-package me.neznamy.tab.platforms.fabric;
+package me.neznamy.tab.platforms.fabric.v1_19_3;
 
 import com.mojang.authlib.GameProfile;
 import io.netty.channel.Channel;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.FabricTabPlayer;
 import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.TabConstants;
 import me.neznamy.tab.shared.chat.IChatBaseComponent;
@@ -9,11 +11,14 @@ import me.neznamy.tab.shared.features.injection.NettyPipelineInjector;
 import me.neznamy.tab.shared.features.nametags.NameTag;
 import me.neznamy.tab.shared.features.sorting.Sorting;
 import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.minecraft.network.Connection;
 import net.minecraft.network.chat.Component;
 import net.minecraft.network.protocol.game.ClientboundPlayerInfoUpdatePacket;
 import net.minecraft.network.protocol.game.ClientboundSetDisplayObjectivePacket;
 import net.minecraft.network.protocol.game.ClientboundSetObjectivePacket;
 import net.minecraft.network.protocol.game.ClientboundSetPlayerTeamPacket;
+import net.minecraft.server.network.ServerGamePacketListenerImpl;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -30,14 +35,17 @@ public class FabricPipelineInjector extends NettyPipelineInjector {
 
     @Override
     @Nullable
+    @SneakyThrows
     protected Channel getChannel(@NotNull TabPlayer player) {
-        return ((FabricTabPlayer)player).getPlayer().connection.connection.channel;
+        Connection c = (Connection) ReflectionUtils.getFields(ServerGamePacketListenerImpl.class, Connection.class)
+                .get(0).get(((FabricTabPlayer)player).getPlayer().connection);
+        return (Channel) ReflectionUtils.getFields(Connection.class, Channel.class).get(0).get(c);
     }
 
     @Override
     public void onDisplayObjective(@NotNull TabPlayer player, @NotNull Object packet) {
         TAB.getInstance().getFeatureManager().onDisplayObjective(player,
-                FabricMultiVersion.getSlot((ClientboundSetDisplayObjectivePacket) packet),
+                ((ClientboundSetDisplayObjectivePacket) packet).getSlot(),
                 String.valueOf(((ClientboundSetDisplayObjectivePacket)packet).getObjectiveName()));
     }
 
@@ -65,14 +73,12 @@ public class FabricPipelineInjector extends NettyPipelineInjector {
 
     @Override
     public boolean isPlayerInfo(@NotNull Object packet) {
-        return FabricMultiVersion.isPlayerInfo(packet);
+        return packet instanceof ClientboundPlayerInfoUpdatePacket;
     }
 
     @Override
+    @SneakyThrows
     public void onPlayerInfo(@NotNull TabPlayer receiver, @NotNull Object packet0) {
-        // Comment this entire method out when compiling with 1.19.2-, adding compatibility would be tough and not worth,
-        // as nobody needs these features on Fabric anyway
-
         ClientboundPlayerInfoUpdatePacket packet = (ClientboundPlayerInfoUpdatePacket) packet0;
         EnumSet<ClientboundPlayerInfoUpdatePacket.Action> actions = packet.actions();
         List<ClientboundPlayerInfoUpdatePacket.Entry> updatedList = new ArrayList<>();
@@ -92,7 +98,7 @@ public class FabricPipelineInjector extends NettyPipelineInjector {
             }
             updatedList.add(new ClientboundPlayerInfoUpdatePacket.Entry(nmsData.profileId(), profile, nmsData.listed(), latency, nmsData.gameMode(), displayName, nmsData.chatSession()));
         }
-        packet.entries = updatedList;
+        ReflectionUtils.getFields(ClientboundPlayerInfoUpdatePacket.class, List.class).get(0).set(packet, updatedList);
     }
 
     @Override
@@ -101,10 +107,11 @@ public class FabricPipelineInjector extends NettyPipelineInjector {
     }
 
     @Override
+    @SneakyThrows
     public void modifyPlayers(@NotNull Object teamPacket) {
         if (TAB.getInstance().getNameTagManager() == null) return;
         ClientboundSetPlayerTeamPacket packet = (ClientboundSetPlayerTeamPacket) teamPacket;
-        int action = packet.method;
+        int action = ReflectionUtils.getInstanceFields(ClientboundSetPlayerTeamPacket.class, int.class).get(0).getInt(packet);
         if (action == 1 || action == 2 || action == 4) return;
         Collection<String> players = packet.getPlayers();
         String teamName = packet.getName();
@@ -130,6 +137,6 @@ public class FabricPipelineInjector extends NettyPipelineInjector {
                 newList.add(entry);
             }
         }
-        packet.players = newList;
+        ReflectionUtils.getFields(ClientboundSetPlayerTeamPacket.class, Collection.class).get(0).set(packet, newList);
     }
 }

fabric/v1_19_3/src/main/java/me/neznamy/tab/platforms/fabric/v1_19_3/FabricTAB.java

@@ -0,0 +1,225 @@
+package me.neznamy.tab.platforms.fabric.v1_19_3;
+
+import com.mojang.authlib.properties.Property;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.*;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.backend.EntityData;
+import me.neznamy.tab.shared.backend.Location;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.PipelineInjector;
+import me.neznamy.tab.shared.platform.TabList;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback;
+import net.minecraft.SharedConstants;
+import net.minecraft.commands.CommandSourceStack;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.Packet;
+import net.minecraft.network.protocol.game.*;
+import net.minecraft.network.syncher.EntityDataSerializers;
+import net.minecraft.network.syncher.SynchedEntityData;
+import net.minecraft.server.ServerScoreboard;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.entity.EntityType;
+import net.minecraft.world.level.GameType;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.storage.ServerLevelData;
+import net.minecraft.world.phys.Vec3;
+import net.minecraft.world.scores.Objective;
+import net.minecraft.world.scores.PlayerTeam;
+import net.minecraft.world.scores.criteria.ObjectiveCriteria;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.*;
+
+public class FabricTAB implements VersionLoader {
+
+    @Override
+    public List<String> getSupportedVersions() {
+        return List.of("1.19.3");
+    }
+
+    @Override
+    public String getName(Level level) {
+        String path = level.dimension().location().getPath();
+        String dimensionSuffix = switch (path) {
+            case "overworld" -> ""; // No suffix for overworld
+            case "the_nether" -> "_nether";
+            default -> "_" + path; // End + default behavior for other dimensions created by mods
+        };
+        return ((ServerLevelData)level.getLevelData()).getLevelName() + dimensionSuffix;
+    }
+
+    @Override
+    public int getPing(ServerPlayer player) {
+        return player.latency;
+    }
+
+    @Override
+    public void sendMessage(ServerPlayer player, Component message) {
+        player.sendSystemMessage(message);
+    }
+
+    @Override
+    public TabList.Skin propertyToSkin(Property property) {
+        return new TabList.Skin(property.getValue(), property.getSignature());
+    }
+
+    @Override
+    public void sendMessage(CommandSourceStack sender, Component message) {
+        sender.sendSystemMessage(message);
+    }
+
+    @Override
+    public String getServerVersion() {
+        return SharedConstants.getCurrentVersion().getName();
+    }
+
+    @Override
+    public double getMSPT() {
+        return ((FabricPlatform)TAB.getInstance().getPlatform()).getServer().getAverageTickTime();
+    }
+
+    @Override
+    public Component deserialize(String string) {
+        return Component.Serializer.fromJson(string);
+    }
+
+    @Override
+    @SneakyThrows
+    public Packet<?> build(TabList.Action action, FabricTabList.Builder entry) {
+        if (action == FabricTabList.Action.REMOVE_PLAYER) {
+            return new ClientboundPlayerInfoRemovePacket(Collections.singletonList(entry.getId()));
+        }
+        EnumSet<ClientboundPlayerInfoUpdatePacket.Action> actions = action == FabricTabList.Action.ADD_PLAYER ?
+                EnumSet.allOf(ClientboundPlayerInfoUpdatePacket.Action.class) :
+                EnumSet.of(ClientboundPlayerInfoUpdatePacket.Action.valueOf(action.name()));
+        ClientboundPlayerInfoUpdatePacket packet = new ClientboundPlayerInfoUpdatePacket(actions, Collections.emptyList());
+        ReflectionUtils.getFields(ClientboundPlayerInfoUpdatePacket.class, List.class).get(0).set(packet,
+                Collections.singletonList(new ClientboundPlayerInfoUpdatePacket.Entry(
+                        entry.getId(),
+                        entry.createProfile(),
+                        true,
+                        entry.getLatency(),
+                        GameType.byId(entry.getGameMode()),
+                        entry.getDisplayName(),
+                        null
+                )));
+        return packet;
+    }
+
+    @Override
+    public Level getLevel(ServerPlayer player) {
+        return player.level;
+    }
+
+    @Override
+    public boolean isSneaking(ServerPlayer player) {
+        return player.isCrouching();
+    }
+
+    @Override
+    public EntityData createDataWatcher(TabPlayer viewer, byte flags, String displayName, boolean nameVisible) {
+        return () -> java.util.Arrays.asList(
+                new SynchedEntityData.DataValue<>(0, EntityDataSerializers.BYTE, flags),
+                new SynchedEntityData.DataValue<>(2, EntityDataSerializers.OPTIONAL_COMPONENT,
+                        Optional.of(((FabricTabPlayer)viewer).getPlatform().toComponent(IChatBaseComponent.optimizedComponent(displayName), viewer.getVersion()))),
+                new SynchedEntityData.DataValue<>(3, EntityDataSerializers.BOOLEAN, nameVisible),
+                new SynchedEntityData.DataValue<>(15, EntityDataSerializers.BYTE, (byte)16)
+        );
+    }
+
+    @Override
+    public Packet<?> spawnEntity(int entityId, UUID id, Object entityType, Location location) {
+        return new ClientboundAddEntityPacket(entityId, id, location.getX(), location.getY(), location.getZ(),
+                0, 0, (EntityType<?>) entityType, 0, Vec3.ZERO, 0);
+    }
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public Packet<?> newEntityMetadata(int entityId, EntityData data) {
+        return new ClientboundSetEntityDataPacket(entityId, (List<SynchedEntityData.DataValue<?>>) data.build());
+    }
+
+    @Override
+    public boolean isSpawnPlayerPacket(Object packet) {
+        return packet instanceof ClientboundAddPlayerPacket;
+    }
+
+    @Override
+    public int getSpawnedPlayer(Object spawnPacket) {
+        return ((ClientboundAddPlayerPacket) spawnPacket).getEntityId();
+    }
+
+    @Override
+    public int[] getDestroyedEntities(Object entityDestroyPacket) {
+        return ((ClientboundRemoveEntitiesPacket) entityDestroyPacket).getEntityIds().toIntArray();
+    }
+
+    @Override
+    public boolean isBundlePacket(Object packet) {
+        return false;
+    }
+
+    @Override
+    public Iterable<Object> getPackets(Object bundlePacket) {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public PipelineInjector createPipelineInjector() {
+        return new FabricPipelineInjector();
+    }
+
+    @Override
+    public void destroyEntities(FabricTabPlayer player, int... entities) {
+        player.sendPacket(new ClientboundRemoveEntitiesPacket(entities));
+    }
+
+    @Override
+    public void registerCommandCallback() {
+        CommandRegistrationCallback.EVENT.register((dispatcher, $, $$) -> new FabricTabCommand().onRegisterCommands(dispatcher));
+    }
+
+    @Override
+    public Packet<?> newHeaderFooter(Component header, Component footer) {
+        return new ClientboundTabListPacket(header, footer);
+    }
+
+    @Override
+    public Packet<?> setDisplaySlot(int slot, Objective objective) {
+        return new ClientboundSetDisplayObjectivePacket(slot, objective);
+    }
+
+    @Override
+    public Objective newObjective(String name, Component displayName, ObjectiveCriteria.RenderType renderType,
+                                  @Nullable Component numberFormat) {
+        return new Objective(dummyScoreboard, name, ObjectiveCriteria.DUMMY, displayName, renderType);
+    }
+
+    @Override
+    public Packet<?> registerTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, true);
+    }
+
+    @Override
+    public Packet<?> unregisterTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createRemovePacket(team);
+    }
+
+    @Override
+    public Packet<?> updateTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, false);
+    }
+
+    @Override
+    public Packet<?> setScore(String objective, String scoreHolder, int score, Component displayName, @Nullable Component numberFormat) {
+        return new ClientboundSetScorePacket(ServerScoreboard.Method.CHANGE, objective, scoreHolder, score);
+    }
+
+    @Override
+    public Packet<?> removeScore(String objective, String scoreHolder) {
+        return new ClientboundSetScorePacket(ServerScoreboard.Method.REMOVE, objective, scoreHolder, 0);
+    }
+}

fabric/v1_20_1/build.gradle.kts

@@ -0,0 +1,28 @@
+plugins {
+    id("fabric-loom")
+}
+
+repositories {
+    // Gradle doesn't support combining settings and project repositories, so we have to re-declare all the settings repos we need
+    maven("https://jitpack.io") // YamlAssist
+    maven("https://repo.opencollab.dev/maven-snapshots/")
+    maven("https://repo.viaversion.com/")
+    maven("https://oss.sonatype.org/content/repositories/snapshots")
+}
+
+dependencies {
+    implementation(projects.fabric)
+    minecraft("com.mojang:minecraft:1.20.1")
+    mappings(loom.officialMojangMappings())
+    modImplementation("net.fabricmc:fabric-loader:0.14.17")
+    val fabricApiVersion = "0.83.0+1.20.1"
+    modImplementation(fabricApi.module("fabric-api-base", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-lifecycle-events-v1", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-command-api-v2", fabricApiVersion))
+}
+
+tasks {
+    compileJava {
+        options.release.set(17)
+    }
+}

fabric/v1_20_1/src/main/java/me/neznamy/tab/platforms/fabric/v1_20_1/FabricPipelineInjector.java

@@ -0,0 +1,142 @@
+package me.neznamy.tab.platforms.fabric.v1_20_1;
+
+import com.mojang.authlib.GameProfile;
+import io.netty.channel.Channel;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.FabricTabPlayer;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.TabConstants;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.NettyPipelineInjector;
+import me.neznamy.tab.shared.features.nametags.NameTag;
+import me.neznamy.tab.shared.features.sorting.Sorting;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.minecraft.network.Connection;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.game.ClientboundPlayerInfoUpdatePacket;
+import net.minecraft.network.protocol.game.ClientboundSetDisplayObjectivePacket;
+import net.minecraft.network.protocol.game.ClientboundSetObjectivePacket;
+import net.minecraft.network.protocol.game.ClientboundSetPlayerTeamPacket;
+import net.minecraft.server.network.ServerGamePacketListenerImpl;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.EnumSet;
+import java.util.List;
+
+public class FabricPipelineInjector extends NettyPipelineInjector {
+
+    public FabricPipelineInjector() {
+        super("packet_handler");
+    }
+
+    @Override
+    @Nullable
+    @SneakyThrows
+    protected Channel getChannel(@NotNull TabPlayer player) {
+        Connection c = (Connection) ReflectionUtils.getFields(ServerGamePacketListenerImpl.class, Connection.class)
+                .get(0).get(((FabricTabPlayer)player).getPlayer().connection);
+        return (Channel) ReflectionUtils.getFields(Connection.class, Channel.class).get(0).get(c);
+    }
+
+    @Override
+    public void onDisplayObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        TAB.getInstance().getFeatureManager().onDisplayObjective(player,
+                ((ClientboundSetDisplayObjectivePacket) packet).getSlot(),
+                String.valueOf(((ClientboundSetDisplayObjectivePacket)packet).getObjectiveName()));
+    }
+
+    @Override
+    public void onObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        TAB.getInstance().getFeatureManager().onObjective(player,
+                ((ClientboundSetObjectivePacket)packet).getMethod(),
+                ((ClientboundSetObjectivePacket)packet).getObjectiveName());
+    }
+
+    @Override
+    public boolean isDisplayObjective(@NotNull Object packet) {
+        return packet instanceof ClientboundSetDisplayObjectivePacket;
+    }
+
+    @Override
+    public boolean isObjective(@NotNull Object packet) {
+        return packet instanceof ClientboundSetObjectivePacket;
+    }
+
+    @Override
+    public boolean isTeam(@NotNull Object packet) {
+        return packet instanceof ClientboundSetPlayerTeamPacket;
+    }
+
+    @Override
+    public boolean isPlayerInfo(@NotNull Object packet) {
+        return packet instanceof ClientboundPlayerInfoUpdatePacket;
+    }
+
+    @Override
+    @SneakyThrows
+    public void onPlayerInfo(@NotNull TabPlayer receiver, @NotNull Object packet0) {
+        ClientboundPlayerInfoUpdatePacket packet = (ClientboundPlayerInfoUpdatePacket) packet0;
+        EnumSet<ClientboundPlayerInfoUpdatePacket.Action> actions = packet.actions();
+        List<ClientboundPlayerInfoUpdatePacket.Entry> updatedList = new ArrayList<>();
+        for (ClientboundPlayerInfoUpdatePacket.Entry nmsData : packet.entries()) {
+            GameProfile profile = nmsData.profile();
+            Component displayName = nmsData.displayName();
+            int latency = nmsData.latency();
+            if (actions.contains(ClientboundPlayerInfoUpdatePacket.Action.UPDATE_DISPLAY_NAME)) {
+                IChatBaseComponent newDisplayName = TAB.getInstance().getFeatureManager().onDisplayNameChange(receiver, nmsData.profileId());
+                if (newDisplayName != null) displayName = ((FabricTabPlayer)receiver).getPlatform().toComponent(newDisplayName, receiver.getVersion());
+            }
+            if (actions.contains(ClientboundPlayerInfoUpdatePacket.Action.UPDATE_LATENCY)) {
+                latency = TAB.getInstance().getFeatureManager().onLatencyChange(receiver, nmsData.profileId(), latency);
+            }
+            if (actions.contains(ClientboundPlayerInfoUpdatePacket.Action.ADD_PLAYER)) {
+                TAB.getInstance().getFeatureManager().onEntryAdd(receiver, nmsData.profileId(), profile.getName());
+            }
+            updatedList.add(new ClientboundPlayerInfoUpdatePacket.Entry(nmsData.profileId(), profile, nmsData.listed(), latency, nmsData.gameMode(), displayName, nmsData.chatSession()));
+        }
+        ReflectionUtils.getFields(ClientboundPlayerInfoUpdatePacket.class, List.class).get(0).set(packet, updatedList);
+    }
+
+    @Override
+    public boolean isLogin(@NotNull Object packet) {
+        return false;
+    }
+
+    @Override
+    @SneakyThrows
+    public void modifyPlayers(@NotNull Object teamPacket) {
+        if (TAB.getInstance().getNameTagManager() == null) return;
+        ClientboundSetPlayerTeamPacket packet = (ClientboundSetPlayerTeamPacket) teamPacket;
+        int action = ReflectionUtils.getInstanceFields(ClientboundSetPlayerTeamPacket.class, int.class).get(0).getInt(packet);
+        if (action == 1 || action == 2 || action == 4) return;
+        Collection<String> players = packet.getPlayers();
+        String teamName = packet.getName();
+        if (players == null) return;
+        //creating a new list to prevent NoSuchFieldException in minecraft packet encoder when a player is removed
+        Collection<String> newList = new ArrayList<>();
+        for (String entry : players) {
+            TabPlayer p = getPlayer(entry);
+            if (p == null) {
+                newList.add(entry);
+                continue;
+            }
+            Sorting sorting = TAB.getInstance().getFeatureManager().getFeature(TabConstants.Feature.SORTING);
+            String expectedTeam = sorting.getShortTeamName(p);
+            if (expectedTeam == null) {
+                newList.add(entry);
+                continue;
+            }
+            if (!((NameTag)TAB.getInstance().getNameTagManager()).getDisableChecker().isDisabledPlayer(p) &&
+                    !TAB.getInstance().getNameTagManager().hasTeamHandlingPaused(p) && !teamName.equals(expectedTeam)) {
+                logTeamOverride(teamName, p.getName(), expectedTeam);
+            } else {
+                newList.add(entry);
+            }
+        }
+        ReflectionUtils.getFields(ClientboundSetPlayerTeamPacket.class, Collection.class).get(0).set(packet, newList);
+    }
+}

fabric/v1_20_1/src/main/java/me/neznamy/tab/platforms/fabric/v1_20_1/FabricTAB.java

@@ -0,0 +1,226 @@
+package me.neznamy.tab.platforms.fabric.v1_20_1;
+
+import com.mojang.authlib.properties.Property;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.*;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.backend.EntityData;
+import me.neznamy.tab.shared.backend.Location;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.PipelineInjector;
+import me.neznamy.tab.shared.platform.TabList;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback;
+import net.minecraft.SharedConstants;
+import net.minecraft.commands.CommandSourceStack;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.Packet;
+import net.minecraft.network.protocol.game.*;
+import net.minecraft.network.syncher.EntityDataSerializers;
+import net.minecraft.network.syncher.SynchedEntityData;
+import net.minecraft.server.ServerScoreboard;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.entity.EntityType;
+import net.minecraft.world.level.GameType;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.storage.ServerLevelData;
+import net.minecraft.world.phys.Vec3;
+import net.minecraft.world.scores.Objective;
+import net.minecraft.world.scores.PlayerTeam;
+import net.minecraft.world.scores.criteria.ObjectiveCriteria;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.*;
+
+public class FabricTAB implements VersionLoader {
+
+    @Override
+    public List<String> getSupportedVersions() {
+        return List.of("1.19.4", "1.20", "1.20.1");
+    }
+
+    @Override
+    public String getName(Level level) {
+        String path = level.dimension().location().getPath();
+        String dimensionSuffix = switch (path) {
+            case "overworld" -> ""; // No suffix for overworld
+            case "the_nether" -> "_nether";
+            default -> "_" + path; // End + default behavior for other dimensions created by mods
+        };
+        return ((ServerLevelData)level.getLevelData()).getLevelName() + dimensionSuffix;
+    }
+
+    @Override
+    public int getPing(ServerPlayer player) {
+        return player.latency;
+    }
+
+    @Override
+    public void sendMessage(ServerPlayer player, Component message) {
+        player.sendSystemMessage(message);
+    }
+
+    @Override
+    public TabList.Skin propertyToSkin(Property property) {
+        return new TabList.Skin(property.getValue(), property.getSignature());
+    }
+
+    @Override
+    public void sendMessage(CommandSourceStack sender, Component message) {
+        sender.sendSystemMessage(message);
+    }
+
+    @Override
+    public String getServerVersion() {
+        return SharedConstants.getCurrentVersion().getName();
+    }
+
+    @Override
+    public double getMSPT() {
+        return ((FabricPlatform)TAB.getInstance().getPlatform()).getServer().getAverageTickTime();
+    }
+
+    @Override
+    public Component deserialize(String string) {
+        return Component.Serializer.fromJson(string);
+    }
+
+    @Override
+    @SneakyThrows
+    public Packet<?> build(TabList.Action action, FabricTabList.Builder entry) {
+        if (action == FabricTabList.Action.REMOVE_PLAYER) {
+            return new ClientboundPlayerInfoRemovePacket(Collections.singletonList(entry.getId()));
+        }
+        EnumSet<ClientboundPlayerInfoUpdatePacket.Action> actions = action == FabricTabList.Action.ADD_PLAYER ?
+                EnumSet.allOf(ClientboundPlayerInfoUpdatePacket.Action.class) :
+                EnumSet.of(ClientboundPlayerInfoUpdatePacket.Action.valueOf(action.name()));
+        ClientboundPlayerInfoUpdatePacket packet = new ClientboundPlayerInfoUpdatePacket(actions, Collections.emptyList());
+        ReflectionUtils.getFields(ClientboundPlayerInfoUpdatePacket.class, List.class).get(0).set(packet,
+                Collections.singletonList(new ClientboundPlayerInfoUpdatePacket.Entry(
+                        entry.getId(),
+                        entry.createProfile(),
+                        true,
+                        entry.getLatency(),
+                        GameType.byId(entry.getGameMode()),
+                        entry.getDisplayName(),
+                        null
+                )));
+        return packet;
+    }
+
+    @Override
+    public Level getLevel(ServerPlayer player) {
+        return player.level();
+    }
+
+    @Override
+    public boolean isSneaking(ServerPlayer player) {
+        return player.isCrouching();
+    }
+
+    @Override
+    public EntityData createDataWatcher(TabPlayer viewer, byte flags, String displayName, boolean nameVisible) {
+        return () -> java.util.Arrays.asList(
+                new SynchedEntityData.DataValue<>(0, EntityDataSerializers.BYTE, flags),
+                new SynchedEntityData.DataValue<>(2, EntityDataSerializers.OPTIONAL_COMPONENT,
+                        Optional.of(((FabricTabPlayer)viewer).getPlatform().toComponent(IChatBaseComponent.optimizedComponent(displayName), viewer.getVersion()))),
+                new SynchedEntityData.DataValue<>(3, EntityDataSerializers.BOOLEAN, nameVisible),
+                new SynchedEntityData.DataValue<>(15, EntityDataSerializers.BYTE, (byte)16)
+        );
+    }
+
+    @Override
+    public Packet<?> spawnEntity(int entityId, UUID id, Object entityType, Location location) {
+        return new ClientboundAddEntityPacket(entityId, id, location.getX(), location.getY(), location.getZ(),
+                0, 0, (EntityType<?>) entityType, 0, Vec3.ZERO, 0);
+    }
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public Packet<?> newEntityMetadata(int entityId, EntityData data) {
+        return new ClientboundSetEntityDataPacket(entityId, (List<SynchedEntityData.DataValue<?>>) data.build());
+    }
+
+    @Override
+    public boolean isSpawnPlayerPacket(Object packet) {
+        return packet instanceof ClientboundAddPlayerPacket;
+    }
+
+    @Override
+    public int getSpawnedPlayer(Object spawnPacket) {
+        return ((ClientboundAddPlayerPacket) spawnPacket).getEntityId();
+    }
+
+    @Override
+    public int[] getDestroyedEntities(Object entityDestroyPacket) {
+        return ((ClientboundRemoveEntitiesPacket) entityDestroyPacket).getEntityIds().toIntArray();
+    }
+
+    @Override
+    public boolean isBundlePacket(Object packet) {
+        return packet instanceof ClientboundBundlePacket;
+    }
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public Iterable<Object> getPackets(Object bundlePacket) {
+        return (Iterable<Object>) (Object) ((ClientboundBundlePacket)bundlePacket).subPackets();
+    }
+
+    @Override
+    public PipelineInjector createPipelineInjector() {
+        return new FabricPipelineInjector();
+    }
+
+    @Override
+    public void destroyEntities(FabricTabPlayer player, int... entities) {
+        player.sendPacket(new ClientboundRemoveEntitiesPacket(entities));
+    }
+
+    @Override
+    public void registerCommandCallback() {
+        CommandRegistrationCallback.EVENT.register((dispatcher, $, $$) -> new FabricTabCommand().onRegisterCommands(dispatcher));
+    }
+
+    @Override
+    public Packet<?> newHeaderFooter(Component header, Component footer) {
+        return new ClientboundTabListPacket(header, footer);
+    }
+
+    @Override
+    public Packet<?> setDisplaySlot(int slot, Objective objective) {
+        return new ClientboundSetDisplayObjectivePacket(slot, objective);
+    }
+
+    @Override
+    public Objective newObjective(String name, Component displayName, ObjectiveCriteria.RenderType renderType,
+                                  @Nullable Component numberFormat) {
+        return new Objective(dummyScoreboard, name, ObjectiveCriteria.DUMMY, displayName, renderType);
+    }
+
+    @Override
+    public Packet<?> registerTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, true);
+    }
+
+    @Override
+    public Packet<?> unregisterTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createRemovePacket(team);
+    }
+
+    @Override
+    public Packet<?> updateTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, false);
+    }
+
+    @Override
+    public Packet<?> setScore(String objective, String scoreHolder, int score, Component displayName, @Nullable Component numberFormat) {
+        return new ClientboundSetScorePacket(ServerScoreboard.Method.CHANGE, objective, scoreHolder, score);
+    }
+
+    @Override
+    public Packet<?> removeScore(String objective, String scoreHolder) {
+        return new ClientboundSetScorePacket(ServerScoreboard.Method.REMOVE, objective, scoreHolder, 0);
+    }
+}

fabric/v1_20_2/build.gradle.kts

@@ -0,0 +1,28 @@
+plugins {
+    id("fabric-loom")
+}
+
+repositories {
+    // Gradle doesn't support combining settings and project repositories, so we have to re-declare all the settings repos we need
+    maven("https://jitpack.io") // YamlAssist
+    maven("https://repo.opencollab.dev/maven-snapshots/")
+    maven("https://repo.viaversion.com/")
+    maven("https://oss.sonatype.org/content/repositories/snapshots")
+}
+
+dependencies {
+    implementation(projects.fabric)
+    minecraft("com.mojang:minecraft:1.20.2")
+    mappings(loom.officialMojangMappings())
+    modImplementation("net.fabricmc:fabric-loader:0.14.17")
+    val fabricApiVersion = "0.88.5+1.20.2"
+    modImplementation(fabricApi.module("fabric-api-base", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-lifecycle-events-v1", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-command-api-v2", fabricApiVersion))
+}
+
+tasks {
+    compileJava {
+        options.release.set(17)
+    }
+}

fabric/v1_20_2/src/main/java/me/neznamy/tab/platforms/fabric/v1_20_2/FabricPipelineInjector.java

@@ -0,0 +1,142 @@
+package me.neznamy.tab.platforms.fabric.v1_20_2;
+
+import com.mojang.authlib.GameProfile;
+import io.netty.channel.Channel;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.FabricTabPlayer;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.TabConstants;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.NettyPipelineInjector;
+import me.neznamy.tab.shared.features.nametags.NameTag;
+import me.neznamy.tab.shared.features.sorting.Sorting;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.minecraft.network.Connection;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.game.ClientboundPlayerInfoUpdatePacket;
+import net.minecraft.network.protocol.game.ClientboundSetDisplayObjectivePacket;
+import net.minecraft.network.protocol.game.ClientboundSetObjectivePacket;
+import net.minecraft.network.protocol.game.ClientboundSetPlayerTeamPacket;
+import net.minecraft.server.network.ServerCommonPacketListenerImpl;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.EnumSet;
+import java.util.List;
+
+public class FabricPipelineInjector extends NettyPipelineInjector {
+
+    public FabricPipelineInjector() {
+        super("packet_handler");
+    }
+
+    @Override
+    @Nullable
+    @SneakyThrows
+    protected Channel getChannel(@NotNull TabPlayer player) {
+        Connection c = (Connection) ReflectionUtils.getFields(ServerCommonPacketListenerImpl.class, Connection.class)
+                .get(0).get(((FabricTabPlayer)player).getPlayer().connection);
+        return (Channel) ReflectionUtils.getFields(Connection.class, Channel.class).get(0).get(c);
+    }
+
+    @Override
+    public void onDisplayObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        TAB.getInstance().getFeatureManager().onDisplayObjective(player,
+                ((ClientboundSetDisplayObjectivePacket) packet).getSlot().ordinal(),
+                String.valueOf(((ClientboundSetDisplayObjectivePacket)packet).getObjectiveName()));
+    }
+
+    @Override
+    public void onObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        TAB.getInstance().getFeatureManager().onObjective(player,
+                ((ClientboundSetObjectivePacket)packet).getMethod(),
+                ((ClientboundSetObjectivePacket)packet).getObjectiveName());
+    }
+
+    @Override
+    public boolean isDisplayObjective(@NotNull Object packet) {
+        return packet instanceof ClientboundSetDisplayObjectivePacket;
+    }
+
+    @Override
+    public boolean isObjective(@NotNull Object packet) {
+        return packet instanceof ClientboundSetObjectivePacket;
+    }
+
+    @Override
+    public boolean isTeam(@NotNull Object packet) {
+        return packet instanceof ClientboundSetPlayerTeamPacket;
+    }
+
+    @Override
+    public boolean isPlayerInfo(@NotNull Object packet) {
+        return packet instanceof ClientboundPlayerInfoUpdatePacket;
+    }
+
+    @Override
+    @SneakyThrows
+    public void onPlayerInfo(@NotNull TabPlayer receiver, @NotNull Object packet0) {
+        ClientboundPlayerInfoUpdatePacket packet = (ClientboundPlayerInfoUpdatePacket) packet0;
+        EnumSet<ClientboundPlayerInfoUpdatePacket.Action> actions = packet.actions();
+        List<ClientboundPlayerInfoUpdatePacket.Entry> updatedList = new ArrayList<>();
+        for (ClientboundPlayerInfoUpdatePacket.Entry nmsData : packet.entries()) {
+            GameProfile profile = nmsData.profile();
+            Component displayName = nmsData.displayName();
+            int latency = nmsData.latency();
+            if (actions.contains(ClientboundPlayerInfoUpdatePacket.Action.UPDATE_DISPLAY_NAME)) {
+                IChatBaseComponent newDisplayName = TAB.getInstance().getFeatureManager().onDisplayNameChange(receiver, nmsData.profileId());
+                if (newDisplayName != null) displayName = ((FabricTabPlayer)receiver).getPlatform().toComponent(newDisplayName, receiver.getVersion());
+            }
+            if (actions.contains(ClientboundPlayerInfoUpdatePacket.Action.UPDATE_LATENCY)) {
+                latency = TAB.getInstance().getFeatureManager().onLatencyChange(receiver, nmsData.profileId(), latency);
+            }
+            if (actions.contains(ClientboundPlayerInfoUpdatePacket.Action.ADD_PLAYER)) {
+                TAB.getInstance().getFeatureManager().onEntryAdd(receiver, nmsData.profileId(), profile.getName());
+            }
+            updatedList.add(new ClientboundPlayerInfoUpdatePacket.Entry(nmsData.profileId(), profile, nmsData.listed(), latency, nmsData.gameMode(), displayName, nmsData.chatSession()));
+        }
+        ReflectionUtils.getFields(ClientboundPlayerInfoUpdatePacket.class, List.class).get(0).set(packet, updatedList);
+    }
+
+    @Override
+    public boolean isLogin(@NotNull Object packet) {
+        return false;
+    }
+
+    @Override
+    @SneakyThrows
+    public void modifyPlayers(@NotNull Object teamPacket) {
+        if (TAB.getInstance().getNameTagManager() == null) return;
+        ClientboundSetPlayerTeamPacket packet = (ClientboundSetPlayerTeamPacket) teamPacket;
+        int action = ReflectionUtils.getInstanceFields(ClientboundSetPlayerTeamPacket.class, int.class).get(0).getInt(packet);
+        if (action == 1 || action == 2 || action == 4) return;
+        Collection<String> players = packet.getPlayers();
+        String teamName = packet.getName();
+        if (players == null) return;
+        //creating a new list to prevent NoSuchFieldException in minecraft packet encoder when a player is removed
+        Collection<String> newList = new ArrayList<>();
+        for (String entry : players) {
+            TabPlayer p = getPlayer(entry);
+            if (p == null) {
+                newList.add(entry);
+                continue;
+            }
+            Sorting sorting = TAB.getInstance().getFeatureManager().getFeature(TabConstants.Feature.SORTING);
+            String expectedTeam = sorting.getShortTeamName(p);
+            if (expectedTeam == null) {
+                newList.add(entry);
+                continue;
+            }
+            if (!((NameTag)TAB.getInstance().getNameTagManager()).getDisableChecker().isDisabledPlayer(p) &&
+                    !TAB.getInstance().getNameTagManager().hasTeamHandlingPaused(p) && !teamName.equals(expectedTeam)) {
+                logTeamOverride(teamName, p.getName(), expectedTeam);
+            } else {
+                newList.add(entry);
+            }
+        }
+        ReflectionUtils.getFields(ClientboundSetPlayerTeamPacket.class, Collection.class).get(0).set(packet, newList);
+    }
+}

fabric/v1_20_2/src/main/java/me/neznamy/tab/platforms/fabric/v1_20_2/FabricTAB.java

@@ -0,0 +1,227 @@
+package me.neznamy.tab.platforms.fabric.v1_20_2;
+
+import com.mojang.authlib.properties.Property;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.*;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.backend.EntityData;
+import me.neznamy.tab.shared.backend.Location;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.PipelineInjector;
+import me.neznamy.tab.shared.platform.TabList;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback;
+import net.minecraft.SharedConstants;
+import net.minecraft.commands.CommandSourceStack;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.Packet;
+import net.minecraft.network.protocol.game.*;
+import net.minecraft.network.syncher.EntityDataSerializers;
+import net.minecraft.network.syncher.SynchedEntityData;
+import net.minecraft.server.ServerScoreboard;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.entity.EntityType;
+import net.minecraft.world.level.GameType;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.storage.ServerLevelData;
+import net.minecraft.world.phys.Vec3;
+import net.minecraft.world.scores.DisplaySlot;
+import net.minecraft.world.scores.Objective;
+import net.minecraft.world.scores.PlayerTeam;
+import net.minecraft.world.scores.criteria.ObjectiveCriteria;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.*;
+
+public class FabricTAB implements VersionLoader {
+
+    @Override
+    public List<String> getSupportedVersions() {
+        return List.of("1.20.2");
+    }
+
+    @Override
+    public String getName(Level level) {
+        String path = level.dimension().location().getPath();
+        String dimensionSuffix = switch (path) {
+            case "overworld" -> ""; // No suffix for overworld
+            case "the_nether" -> "_nether";
+            default -> "_" + path; // End + default behavior for other dimensions created by mods
+        };
+        return ((ServerLevelData)level.getLevelData()).getLevelName() + dimensionSuffix;
+    }
+
+    @Override
+    public int getPing(ServerPlayer player) {
+        return player.connection.latency();
+    }
+
+    @Override
+    public void sendMessage(ServerPlayer player, Component message) {
+        player.sendSystemMessage(message);
+    }
+
+    @Override
+    public TabList.Skin propertyToSkin(Property property) {
+        return new TabList.Skin(property.value(), property.signature());
+    }
+
+    @Override
+    public void sendMessage(CommandSourceStack sender, Component message) {
+        sender.sendSystemMessage(message);
+    }
+
+    @Override
+    public String getServerVersion() {
+        return SharedConstants.getCurrentVersion().getName();
+    }
+
+    @Override
+    public double getMSPT() {
+        return ((FabricPlatform)TAB.getInstance().getPlatform()).getServer().getAverageTickTime();
+    }
+
+    @Override
+    public Component deserialize(String string) {
+        return Component.Serializer.fromJson(string);
+    }
+
+    @Override
+    @SneakyThrows
+    public Packet<?> build(TabList.Action action, FabricTabList.Builder entry) {
+        if (action == FabricTabList.Action.REMOVE_PLAYER) {
+            return new ClientboundPlayerInfoRemovePacket(Collections.singletonList(entry.getId()));
+        }
+        EnumSet<ClientboundPlayerInfoUpdatePacket.Action> actions = action == FabricTabList.Action.ADD_PLAYER ?
+                EnumSet.allOf(ClientboundPlayerInfoUpdatePacket.Action.class) :
+                EnumSet.of(ClientboundPlayerInfoUpdatePacket.Action.valueOf(action.name()));
+        ClientboundPlayerInfoUpdatePacket packet = new ClientboundPlayerInfoUpdatePacket(actions, Collections.emptyList());
+        ReflectionUtils.getFields(ClientboundPlayerInfoUpdatePacket.class, List.class).get(0).set(packet,
+                Collections.singletonList(new ClientboundPlayerInfoUpdatePacket.Entry(
+                        entry.getId(),
+                        entry.createProfile(),
+                        true,
+                        entry.getLatency(),
+                        GameType.byId(entry.getGameMode()),
+                        entry.getDisplayName(),
+                        null
+                )));
+        return packet;
+    }
+
+    @Override
+    public Level getLevel(ServerPlayer player) {
+        return player.level();
+    }
+
+    @Override
+    public boolean isSneaking(ServerPlayer player) {
+        return player.isCrouching();
+    }
+
+    @Override
+    public EntityData createDataWatcher(TabPlayer viewer, byte flags, String displayName, boolean nameVisible) {
+        return () -> java.util.Arrays.asList(
+                new SynchedEntityData.DataValue<>(0, EntityDataSerializers.BYTE, flags),
+                new SynchedEntityData.DataValue<>(2, EntityDataSerializers.OPTIONAL_COMPONENT,
+                        Optional.of(((FabricTabPlayer)viewer).getPlatform().toComponent(IChatBaseComponent.optimizedComponent(displayName), viewer.getVersion()))),
+                new SynchedEntityData.DataValue<>(3, EntityDataSerializers.BOOLEAN, nameVisible),
+                new SynchedEntityData.DataValue<>(15, EntityDataSerializers.BYTE, (byte)16)
+        );
+    }
+
+    @Override
+    public Packet<?> spawnEntity(int entityId, UUID id, Object entityType, Location location) {
+        return new ClientboundAddEntityPacket(entityId, id, location.getX(), location.getY(), location.getZ(),
+                0, 0, (EntityType<?>) entityType, 0, Vec3.ZERO, 0);
+    }
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public Packet<?> newEntityMetadata(int entityId, EntityData data) {
+        return new ClientboundSetEntityDataPacket(entityId, (List<SynchedEntityData.DataValue<?>>) data.build());
+    }
+
+    @Override
+    public boolean isSpawnPlayerPacket(Object packet) {
+        return packet instanceof ClientboundAddEntityPacket;
+    }
+
+    @Override
+    public int getSpawnedPlayer(Object spawnPacket) {
+        return ((ClientboundAddEntityPacket) spawnPacket).getId();
+    }
+
+    @Override
+    public int[] getDestroyedEntities(Object entityDestroyPacket) {
+        return ((ClientboundRemoveEntitiesPacket) entityDestroyPacket).getEntityIds().toIntArray();
+    }
+
+    @Override
+    public boolean isBundlePacket(Object packet) {
+        return packet instanceof ClientboundBundlePacket;
+    }
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public Iterable<Object> getPackets(Object bundlePacket) {
+        return (Iterable<Object>) (Object) ((ClientboundBundlePacket)bundlePacket).subPackets();
+    }
+
+    @Override
+    public PipelineInjector createPipelineInjector() {
+        return new FabricPipelineInjector();
+    }
+
+    @Override
+    public void destroyEntities(FabricTabPlayer player, int... entities) {
+        player.sendPacket(new ClientboundRemoveEntitiesPacket(entities));
+    }
+
+    @Override
+    public void registerCommandCallback() {
+        CommandRegistrationCallback.EVENT.register((dispatcher, $, $$) -> new FabricTabCommand().onRegisterCommands(dispatcher));
+    }
+
+    @Override
+    public Packet<?> newHeaderFooter(Component header, Component footer) {
+        return new ClientboundTabListPacket(header, footer);
+    }
+
+    @Override
+    public Packet<?> setDisplaySlot(int slot, Objective objective) {
+        return new ClientboundSetDisplayObjectivePacket(DisplaySlot.values()[slot], objective);
+    }
+
+    @Override
+    public Objective newObjective(String name, Component displayName, ObjectiveCriteria.RenderType renderType,
+                                  @Nullable Component numberFormat) {
+        return new Objective(dummyScoreboard, name, ObjectiveCriteria.DUMMY, displayName, renderType);
+    }
+
+    @Override
+    public Packet<?> registerTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, true);
+    }
+
+    @Override
+    public Packet<?> unregisterTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createRemovePacket(team);
+    }
+
+    @Override
+    public Packet<?> updateTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, false);
+    }
+
+    @Override
+    public Packet<?> setScore(String objective, String scoreHolder, int score, Component displayName, @Nullable Component numberFormat) {
+        return new ClientboundSetScorePacket(ServerScoreboard.Method.CHANGE, objective, scoreHolder, score);
+    }
+
+    @Override
+    public Packet<?> removeScore(String objective, String scoreHolder) {
+        return new ClientboundSetScorePacket(ServerScoreboard.Method.REMOVE, objective, scoreHolder, 0);
+    }
+}

fabric/v1_20_4/build.gradle.kts

@@ -0,0 +1,27 @@
+plugins {
+    id("fabric-loom")
+}
+
+repositories {
+    // Gradle doesn't support combining settings and project repositories, so we have to re-declare all the settings repos we need
+    maven("https://jitpack.io") // YamlAssist
+    maven("https://repo.opencollab.dev/maven-snapshots/")
+    maven("https://repo.viaversion.com/")
+    maven("https://oss.sonatype.org/content/repositories/snapshots")
+}
+
+dependencies {
+    implementation(projects.fabric)
+    minecraft("com.mojang:minecraft:1.20.4")
+    mappings(loom.officialMojangMappings())
+    modImplementation("net.fabricmc:fabric-loader:0.14.17")
+    val fabricApiVersion = "0.91.1+1.20.4"
+    modImplementation(fabricApi.module("fabric-api-base", fabricApiVersion))
+    modImplementation(fabricApi.module("fabric-command-api-v2", fabricApiVersion))
+}
+
+tasks {
+    compileJava {
+        options.release.set(17)
+    }
+}

fabric/v1_20_4/src/main/java/me/neznamy/tab/platforms/fabric/v1_20_4/FabricPipelineInjector.java

@@ -0,0 +1,142 @@
+package me.neznamy.tab.platforms.fabric.v1_20_4;
+
+import com.mojang.authlib.GameProfile;
+import io.netty.channel.Channel;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.FabricTabPlayer;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.TabConstants;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.NettyPipelineInjector;
+import me.neznamy.tab.shared.features.nametags.NameTag;
+import me.neznamy.tab.shared.features.sorting.Sorting;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.minecraft.network.Connection;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.game.ClientboundPlayerInfoUpdatePacket;
+import net.minecraft.network.protocol.game.ClientboundSetDisplayObjectivePacket;
+import net.minecraft.network.protocol.game.ClientboundSetObjectivePacket;
+import net.minecraft.network.protocol.game.ClientboundSetPlayerTeamPacket;
+import net.minecraft.server.network.ServerCommonPacketListenerImpl;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.EnumSet;
+import java.util.List;
+
+public class FabricPipelineInjector extends NettyPipelineInjector {
+
+    public FabricPipelineInjector() {
+        super("packet_handler");
+    }
+
+    @Override
+    @Nullable
+    @SneakyThrows
+    protected Channel getChannel(@NotNull TabPlayer player) {
+        Connection c = (Connection) ReflectionUtils.getFields(ServerCommonPacketListenerImpl.class, Connection.class)
+                .get(0).get(((FabricTabPlayer)player).getPlayer().connection);
+        return (Channel) ReflectionUtils.getFields(Connection.class, Channel.class).get(0).get(c);
+    }
+
+    @Override
+    public void onDisplayObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        TAB.getInstance().getFeatureManager().onDisplayObjective(player,
+                ((ClientboundSetDisplayObjectivePacket) packet).getSlot().ordinal(),
+                String.valueOf(((ClientboundSetDisplayObjectivePacket)packet).getObjectiveName()));
+    }
+
+    @Override
+    public void onObjective(@NotNull TabPlayer player, @NotNull Object packet) {
+        TAB.getInstance().getFeatureManager().onObjective(player,
+                ((ClientboundSetObjectivePacket)packet).getMethod(),
+                ((ClientboundSetObjectivePacket)packet).getObjectiveName());
+    }
+
+    @Override
+    public boolean isDisplayObjective(@NotNull Object packet) {
+        return packet instanceof ClientboundSetDisplayObjectivePacket;
+    }
+
+    @Override
+    public boolean isObjective(@NotNull Object packet) {
+        return packet instanceof ClientboundSetObjectivePacket;
+    }
+
+    @Override
+    public boolean isTeam(@NotNull Object packet) {
+        return packet instanceof ClientboundSetPlayerTeamPacket;
+    }
+
+    @Override
+    public boolean isPlayerInfo(@NotNull Object packet) {
+        return packet instanceof ClientboundPlayerInfoUpdatePacket;
+    }
+
+    @Override
+    @SneakyThrows
+    public void onPlayerInfo(@NotNull TabPlayer receiver, @NotNull Object packet0) {
+        ClientboundPlayerInfoUpdatePacket packet = (ClientboundPlayerInfoUpdatePacket) packet0;
+        EnumSet<ClientboundPlayerInfoUpdatePacket.Action> actions = packet.actions();
+        List<ClientboundPlayerInfoUpdatePacket.Entry> updatedList = new ArrayList<>();
+        for (ClientboundPlayerInfoUpdatePacket.Entry nmsData : packet.entries()) {
+            GameProfile profile = nmsData.profile();
+            Component displayName = nmsData.displayName();
+            int latency = nmsData.latency();
+            if (actions.contains(ClientboundPlayerInfoUpdatePacket.Action.UPDATE_DISPLAY_NAME)) {
+                IChatBaseComponent newDisplayName = TAB.getInstance().getFeatureManager().onDisplayNameChange(receiver, nmsData.profileId());
+                if (newDisplayName != null) displayName = ((FabricTabPlayer)receiver).getPlatform().toComponent(newDisplayName, receiver.getVersion());
+            }
+            if (actions.contains(ClientboundPlayerInfoUpdatePacket.Action.UPDATE_LATENCY)) {
+                latency = TAB.getInstance().getFeatureManager().onLatencyChange(receiver, nmsData.profileId(), latency);
+            }
+            if (actions.contains(ClientboundPlayerInfoUpdatePacket.Action.ADD_PLAYER)) {
+                TAB.getInstance().getFeatureManager().onEntryAdd(receiver, nmsData.profileId(), profile.getName());
+            }
+            updatedList.add(new ClientboundPlayerInfoUpdatePacket.Entry(nmsData.profileId(), profile, nmsData.listed(), latency, nmsData.gameMode(), displayName, nmsData.chatSession()));
+        }
+        ReflectionUtils.getFields(ClientboundPlayerInfoUpdatePacket.class, List.class).get(0).set(packet, updatedList);
+    }
+
+    @Override
+    public boolean isLogin(@NotNull Object packet) {
+        return false;
+    }
+
+    @Override
+    @SneakyThrows
+    public void modifyPlayers(@NotNull Object teamPacket) {
+        if (TAB.getInstance().getNameTagManager() == null) return;
+        ClientboundSetPlayerTeamPacket packet = (ClientboundSetPlayerTeamPacket) teamPacket;
+        int action = ReflectionUtils.getInstanceFields(ClientboundSetPlayerTeamPacket.class, int.class).get(0).getInt(packet);
+        if (action == 1 || action == 2 || action == 4) return;
+        Collection<String> players = packet.getPlayers();
+        String teamName = packet.getName();
+        if (players == null) return;
+        //creating a new list to prevent NoSuchFieldException in minecraft packet encoder when a player is removed
+        Collection<String> newList = new ArrayList<>();
+        for (String entry : players) {
+            TabPlayer p = getPlayer(entry);
+            if (p == null) {
+                newList.add(entry);
+                continue;
+            }
+            Sorting sorting = TAB.getInstance().getFeatureManager().getFeature(TabConstants.Feature.SORTING);
+            String expectedTeam = sorting.getShortTeamName(p);
+            if (expectedTeam == null) {
+                newList.add(entry);
+                continue;
+            }
+            if (!((NameTag)TAB.getInstance().getNameTagManager()).getDisableChecker().isDisabledPlayer(p) &&
+                    !TAB.getInstance().getNameTagManager().hasTeamHandlingPaused(p) && !teamName.equals(expectedTeam)) {
+                logTeamOverride(teamName, p.getName(), expectedTeam);
+            } else {
+                newList.add(entry);
+            }
+        }
+        ReflectionUtils.getFields(ClientboundSetPlayerTeamPacket.class, Collection.class).get(0).set(packet, newList);
+    }
+}

fabric/v1_20_4/src/main/java/me/neznamy/tab/platforms/fabric/v1_20_4/FabricTAB.java

@@ -0,0 +1,233 @@
+package me.neznamy.tab.platforms.fabric.v1_20_4;
+
+import com.mojang.authlib.properties.Property;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.*;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.backend.EntityData;
+import me.neznamy.tab.shared.backend.Location;
+import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.features.injection.PipelineInjector;
+import me.neznamy.tab.shared.platform.TabList;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback;
+import net.minecraft.SharedConstants;
+import net.minecraft.commands.CommandSourceStack;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.chat.numbers.FixedFormat;
+import net.minecraft.network.protocol.Packet;
+import net.minecraft.network.protocol.game.*;
+import net.minecraft.network.syncher.EntityDataSerializers;
+import net.minecraft.network.syncher.SynchedEntityData;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.entity.EntityType;
+import net.minecraft.world.level.GameType;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.storage.ServerLevelData;
+import net.minecraft.world.phys.Vec3;
+import net.minecraft.world.scores.*;
+import net.minecraft.world.scores.criteria.ObjectiveCriteria;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.*;
+
+public class FabricTAB implements VersionLoader {
+
+    @Override
+    public List<String> getSupportedVersions() {
+        return Arrays.asList("1.20.3", "1.20.4");
+    }
+
+    @Override
+    public String getName(Level level) {
+        String path = level.dimension().location().getPath();
+        String dimensionSuffix = switch (path) {
+            case "overworld" -> ""; // No suffix for overworld
+            case "the_nether" -> "_nether";
+            default -> "_" + path; // End + default behavior for other dimensions created by mods
+        };
+        return ((ServerLevelData)level.getLevelData()).getLevelName() + dimensionSuffix;
+    }
+
+    @Override
+    public int getPing(ServerPlayer player) {
+        return player.connection.latency();
+    }
+
+    @Override
+    public void sendMessage(ServerPlayer player, Component message) {
+        player.sendSystemMessage(message);
+    }
+
+    @Override
+    public TabList.Skin propertyToSkin(Property property) {
+        return new TabList.Skin(property.value(), property.signature());
+    }
+
+    @Override
+    public void sendMessage(CommandSourceStack sender, Component message) {
+        sender.sendSystemMessage(message);
+    }
+
+    @Override
+    public String getServerVersion() {
+        return SharedConstants.getCurrentVersion().getName();
+    }
+
+    @Override
+    public double getMSPT() {
+        return (float) ((FabricPlatform)TAB.getInstance().getPlatform()).getServer().getAverageTickTimeNanos() / 1000000;
+    }
+
+    @Override
+    public Component deserialize(String string) {
+        return Component.Serializer.fromJson(string);
+    }
+
+    @Override
+    @SneakyThrows
+    public Packet<?> build(TabList.Action action, FabricTabList.Builder entry) {
+        if (action == FabricTabList.Action.REMOVE_PLAYER) {
+            return new ClientboundPlayerInfoRemovePacket(Collections.singletonList(entry.getId()));
+        }
+        EnumSet<ClientboundPlayerInfoUpdatePacket.Action> actions = action == FabricTabList.Action.ADD_PLAYER ?
+                EnumSet.allOf(ClientboundPlayerInfoUpdatePacket.Action.class) :
+                EnumSet.of(ClientboundPlayerInfoUpdatePacket.Action.valueOf(action.name()));
+        ClientboundPlayerInfoUpdatePacket packet = new ClientboundPlayerInfoUpdatePacket(actions, Collections.emptyList());
+        ReflectionUtils.getFields(ClientboundPlayerInfoUpdatePacket.class, List.class).get(0).set(packet,
+                Collections.singletonList(new ClientboundPlayerInfoUpdatePacket.Entry(
+                        entry.getId(),
+                        entry.createProfile(),
+                        true,
+                        entry.getLatency(),
+                        GameType.byId(entry.getGameMode()),
+                        entry.getDisplayName(),
+                        null
+                )));
+        return packet;
+    }
+
+    @Override
+    public Level getLevel(ServerPlayer player) {
+        return player.level();
+    }
+
+    @Override
+    public boolean isSneaking(ServerPlayer player) {
+        return player.isCrouching();
+    }
+
+    @Override
+    public EntityData createDataWatcher(TabPlayer viewer, byte flags, String displayName, boolean nameVisible) {
+        return () -> java.util.Arrays.asList(
+                new SynchedEntityData.DataValue<>(0, EntityDataSerializers.BYTE, flags),
+                new SynchedEntityData.DataValue<>(2, EntityDataSerializers.OPTIONAL_COMPONENT,
+                        Optional.of(((FabricTabPlayer)viewer).getPlatform().toComponent(IChatBaseComponent.optimizedComponent(displayName), viewer.getVersion()))),
+                new SynchedEntityData.DataValue<>(3, EntityDataSerializers.BOOLEAN, nameVisible),
+                new SynchedEntityData.DataValue<>(15, EntityDataSerializers.BYTE, (byte)16)
+        );
+    }
+
+    @Override
+    public Packet<?> spawnEntity(int entityId, UUID id, Object entityType, Location location) {
+        return new ClientboundAddEntityPacket(entityId, id, location.getX(), location.getY(), location.getZ(),
+                0, 0, (EntityType<?>) entityType, 0, Vec3.ZERO, 0);
+    }
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public Packet<?> newEntityMetadata(int entityId, EntityData data) {
+        return new ClientboundSetEntityDataPacket(entityId, (List<SynchedEntityData.DataValue<?>>) data.build());
+    }
+
+    @Override
+    public boolean isSpawnPlayerPacket(Object packet) {
+        return packet instanceof ClientboundAddEntityPacket;
+    }
+
+    @Override
+    public int getSpawnedPlayer(Object spawnPacket) {
+        return ((ClientboundAddEntityPacket) spawnPacket).getId();
+    }
+
+    @Override
+    public int[] getDestroyedEntities(Object entityDestroyPacket) {
+        return ((ClientboundRemoveEntitiesPacket) entityDestroyPacket).getEntityIds().toIntArray();
+    }
+
+    @Override
+    public boolean isBundlePacket(Object packet) {
+        return packet instanceof ClientboundBundlePacket;
+    }
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public Iterable<Object> getPackets(Object bundlePacket) {
+        return (Iterable<Object>) (Object) ((ClientboundBundlePacket)bundlePacket).subPackets();
+    }
+
+    @Override
+    public PipelineInjector createPipelineInjector() {
+        return new FabricPipelineInjector();
+    }
+
+    @Override
+    public void destroyEntities(FabricTabPlayer player, int... entities) {
+        player.sendPacket(new ClientboundRemoveEntitiesPacket(entities));
+    }
+
+    @Override
+    public void registerCommandCallback() {
+        CommandRegistrationCallback.EVENT.register((dispatcher, $, $$) -> new FabricTabCommand().onRegisterCommands(dispatcher));
+    }
+
+    @Override
+    public Packet<?> newHeaderFooter(Component header, Component footer) {
+        return new ClientboundTabListPacket(header, footer);
+    }
+
+    @Override
+    public Packet<?> setDisplaySlot(int slot, Objective objective) {
+        return new ClientboundSetDisplayObjectivePacket(DisplaySlot.values()[slot], objective);
+    }
+
+    @Override
+    public Objective newObjective(String name, Component displayName, ObjectiveCriteria.RenderType renderType,
+                                  @Nullable Component numberFormat) {
+        return new Objective(dummyScoreboard, name, ObjectiveCriteria.DUMMY, displayName, renderType, false,
+                numberFormat == null ? null : new FixedFormat(numberFormat));
+    }
+
+    @Override
+    public Packet<?> registerTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, true);
+    }
+
+    @Override
+    public Packet<?> unregisterTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createRemovePacket(team);
+    }
+
+    @Override
+    public Packet<?> updateTeam(PlayerTeam team) {
+        return ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, false);
+    }
+
+    @Override
+    public Packet<?> setScore(String objective, String scoreHolder, int score, Component displayName,
+                              @Nullable Component numberFormat) {
+        return new ClientboundSetScorePacket(
+                scoreHolder,
+                objective,
+                score,
+                displayName,
+                numberFormat == null ? null : new FixedFormat(numberFormat)
+        );
+    }
+
+    @Override
+    public Packet<?> removeScore(String objective, String scoreHolder) {
+        return new ClientboundResetScorePacket(scoreHolder, objective);
+    }
+}

gradle.properties

@@ -2,7 +2,7 @@
 org.gradle.daemon=true
 org.gradle.configureondemand=true
 org.gradle.parallel=true
-org.gradle.jvmargs=-Xms512M -Xmx4G
+org.gradle.jvmargs=-Xms512M -Xmx8G
 
 # Kotlin properties
 kotlin.code.style=official

jar/build.gradle.kts

@@ -9,7 +9,20 @@ val platforms = setOf(
     rootProject.projects.bungeecord,
     rootProject.projects.velocity,
     rootProject.projects.sponge7,
-    rootProject.projects.sponge8,
+    rootProject.projects.sponge8
+).map { it.dependencyProject }
+
+val fabrics = setOf(
+    rootProject.projects.fabric,
+    rootProject.projects.fabric.v1152,
+    rootProject.projects.fabric.v1165,
+    rootProject.projects.fabric.v1171,
+    rootProject.projects.fabric.v1182,
+    rootProject.projects.fabric.v1192,
+    rootProject.projects.fabric.v1193,
+    rootProject.projects.fabric.v1201,
+    rootProject.projects.fabric.v1202,
+    rootProject.projects.fabric.v1204
 ).map { it.dependencyProject }
 
 tasks {
@@ -27,9 +40,9 @@ tasks {
             registerPlatform(it, it.tasks.named<ShadowJar>("shadowJar").get())
         }
 
-        // Fabric is different
-        val fabricProject = rootProject.projects.fabric.dependencyProject
-        registerPlatform(fabricProject, fabricProject.tasks.named<org.gradle.jvm.tasks.Jar>("remapJar").get())
+        fabrics.forEach {
+            registerPlatform(it, it.tasks.named<org.gradle.jvm.tasks.Jar>("remapJar").get())
+        }
     }
     build {
         dependsOn(shadowJar)

settings.gradle.kts

@@ -5,12 +5,12 @@ dependencyResolutionManagement {
         mavenCentral() // Netty, SnakeYaml, json-simple, Guava, Kyori event, bStats, AuthLib, LuckPerms
         maven("https://repo.extendedclip.com/content/repositories/placeholderapi/") // PlaceholderAPI
         maven("https://repo.viaversion.com/") // ViaVersion
-        maven("https://repo.codemc.org/repository/maven-public/") // RedisBungee, BungeeCord-proxy
         maven("https://repo.opencollab.dev/maven-snapshots/") // Floodgate
         maven("https://repo.purpurmc.org/snapshots") // Purpur
         maven("https://repo.spongepowered.org/repository/maven-public/") // Sponge
-        maven("https://jitpack.io") // PremiumVanish, Vault, YamlAssist
+        maven("https://jitpack.io") // PremiumVanish, Vault, YamlAssist, RedisBungee
         maven("https://repo.md-5.net/content/groups/public/") // LibsDisguises
+        maven("https://nexus.codecrafter47.dyndns.eu/content/repositories/public/") // BungeeCord-proxy // I feel bad for doing this
     }
 }
 
@@ -33,4 +33,13 @@ include(":bungeecord")
 include(":sponge7")
 include(":sponge8")
 include(":fabric")
+include(":fabric:v1_15_2")
+include(":fabric:v1_16_5")
+include(":fabric:v1_17_1")
+include(":fabric:v1_18_2")
+include(":fabric:v1_19_2")
+include(":fabric:v1_19_3")
+include(":fabric:v1_20_1")
+include(":fabric:v1_20_2")
+include(":fabric:v1_20_4")
 include(":jar")

shared/src/main/java/me/neznamy/tab/shared/FeatureManager.java

@@ -11,7 +11,6 @@ import me.neznamy.tab.api.placeholder.PlayerPlaceholder;
 import me.neznamy.tab.shared.config.Configs;
 import me.neznamy.tab.shared.config.mysql.MySQLUserConfiguration;
 import me.neznamy.tab.shared.features.*;
-import me.neznamy.tab.shared.features.alignedplayerlist.AlignedPlayerList;
 import me.neznamy.tab.shared.features.bossbar.BossBarManagerImpl;
 import me.neznamy.tab.shared.features.globalplayerlist.GlobalPlayerList;
 import me.neznamy.tab.shared.features.injection.PipelineInjector;
@@ -25,6 +24,7 @@ import me.neznamy.tab.shared.features.types.*;
 import me.neznamy.tab.shared.platform.TabPlayer;
 import me.neznamy.tab.shared.proxy.ProxyPlatform;
 import me.neznamy.tab.shared.proxy.ProxyTabPlayer;
+import me.neznamy.tab.shared.proxy.message.outgoing.Unload;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -72,7 +72,7 @@ public class FeatureManager {
         TAB.getInstance().getPlaceholderManager().getTabExpansion().unregisterExpansion();
         if (TAB.getInstance().getPlatform() instanceof ProxyPlatform) {
             for (TabPlayer player : TAB.getInstance().getOnlinePlayers()) {
-                ((ProxyTabPlayer)player).sendPluginMessage("Unload");
+                ((ProxyTabPlayer)player).sendPluginMessage(new Unload());
             }
         }
     }
@@ -329,13 +329,12 @@ public class FeatureManager {
         boolean scoreboard         = configuration.getConfig().getBoolean("scoreboard.enabled", false);
         boolean perWorldPlayerList = configuration.getConfig().getBoolean("per-world-playerlist.enabled", false);
         boolean layout             = configuration.getConfig().getBoolean("layout.enabled", false);
-        boolean yellowNumber       = configuration.getConfig().getBoolean("yellow-number-in-tablist.enabled", true);
+        boolean yellowNumber       = configuration.getConfig().getBoolean("playerlist-objective.enabled", true);
         boolean belowName          = configuration.getConfig().getBoolean("belowname-objective.enabled", false);
         boolean teams              = configuration.getConfig().getBoolean("scoreboard-teams.enabled", true);
         boolean unlimitedTags      = configuration.getConfig().getBoolean("scoreboard-teams.unlimited-nametag-mode.enabled", false);
         boolean globalPlayerList   = configuration.getConfig().getBoolean("global-playerlist.enabled", false);
         boolean tablistFormatting  = configuration.getConfig().getBoolean("tablist-name-formatting.enabled", true);
-        boolean alignedSuffix      = configuration.getConfig().getBoolean("tablist-name-formatting.align-tabsuffix-on-the-right", false);
 
         if (perWorldPlayerList && layout) TAB.getInstance().getMisconfigurationHelper().bothPerWorldPlayerListAndLayoutEnabled();
         if (yellowNumber && layout)       TAB.getInstance().getMisconfigurationHelper().layoutBreaksYellowNumber();
@@ -365,7 +364,7 @@ public class FeatureManager {
 
         // Must be loaded after: Sorting
         if (teams) {
-            if (unlimitedTags && minorVersion >= 8) {
+            if (unlimitedTags) {
                 NameTag unlimited = TAB.getInstance().getPlatform().getUnlimitedNameTags();
                 if (unlimited instanceof NameTagX) {
                     featureManager.registerFeature(TabConstants.Feature.UNLIMITED_NAME_TAGS, unlimited);
@@ -381,13 +380,7 @@ public class FeatureManager {
         if (layout) featureManager.registerFeature(TabConstants.Feature.LAYOUT, new LayoutManagerImpl());
 
         // Must be loaded after: Layout
-        if (tablistFormatting) {
-            if (alignedSuffix) {
-                featureManager.registerFeature(TabConstants.Feature.PLAYER_LIST, new AlignedPlayerList());
-            } else {
-                featureManager.registerFeature(TabConstants.Feature.PLAYER_LIST, new PlayerList());
-            }
-        }
+        if (tablistFormatting) featureManager.registerFeature(TabConstants.Feature.PLAYER_LIST, new PlayerList());
 
         // Must be loaded after: PlayerList
         if (globalPlayerList && TAB.getInstance().getServerVersion() == ProtocolVersion.PROXY) {

shared/src/main/java/me/neznamy/tab/shared/MisconfigurationHelper.java

@@ -330,11 +330,15 @@ public class MisconfigurationHelper {
     }
 
     public void layoutBreaksYellowNumber() {
-        startupWarn("Layout feature breaks yellow-number feature, because it replaces real player with fake slots " +
-                "with different usernames for more reliable functionality. Disable yellow-number feature, as it will only look bad " +
+        startupWarn("Layout feature breaks playerlist-objective feature, because it replaces real player with fake slots " +
+                "with different usernames for more reliable functionality. Disable playerlist-objective feature, as it will only look bad " +
                 "and consume resources.");
     }
 
+    public void invalidScoreboardSection(@NotNull String name) {
+        startupWarn("Invalid scoreboard section \"" + name + "\" with no value.");
+    }
+
     /**
      * Sends a startup warn message into console
      *

shared/src/main/java/me/neznamy/tab/shared/Property.java

@@ -20,6 +20,8 @@ import org.jetbrains.annotations.Nullable;
  */
 public class Property {
 
+    private static long counter = 0;
+
     /** Internal identifier for this text for PlaceholderAPI expansion, null if it should not be exposed */
     @Nullable private final String name;
 
@@ -105,7 +107,7 @@ public class Property {
         for (String placeholder : placeholders0) {
             rawFormattedValue0 = replaceFirst(rawFormattedValue0, placeholder, "%s");
         }
-        if (placeholders0.size() > 0 && rawFormattedValue0.contains("%")) {
+        if (!placeholders0.isEmpty() && rawFormattedValue0.contains("%")) {
             int index = rawFormattedValue0.lastIndexOf('%');
             if (rawFormattedValue0.length() == index+1 || rawFormattedValue0.charAt(index+1) != 's') {
                 StringBuilder sb = new StringBuilder(rawFormattedValue0);
@@ -245,12 +247,24 @@ public class Property {
      *          the viewer
      * @return  format for the viewer
      */
-    public @NotNull String getFormat(@Nullable TabPlayer viewer) {
+    public @NotNull String getFormat(@NotNull TabPlayer viewer) {
         String format = lastReplacedValue;
+        // Direct placeholders
         for (String identifier : relPlaceholders) {
             RelationalPlaceholderImpl pl = (RelationalPlaceholderImpl) TAB.getInstance().getPlaceholderManager().getPlaceholder(identifier);
-            format = format.replace(pl.getIdentifier(), viewer == null ? "" : pl.getLastValue(viewer, owner));
+            format = format.replace(pl.getIdentifier(), pl.getLastValue(viewer, owner));
+        }
+
+        // Nested placeholders
+        for (String identifier : TAB.getInstance().getPlaceholderManager().detectPlaceholders(format)) {
+            if (!identifier.startsWith("%rel_")) continue;
+            RelationalPlaceholderImpl pl = (RelationalPlaceholderImpl) TAB.getInstance().getPlaceholderManager().getPlaceholder(identifier);
+            format = format.replace(pl.getIdentifier(), pl.getLastValue(viewer, owner));
         }
         return EnumChatFormat.color(format);
     }
+
+    public static String randomName() {
+        return String.valueOf(counter++);
+    }
 }

shared/src/main/java/me/neznamy/tab/shared/ProtocolVersion.java

@@ -2,7 +2,6 @@ package me.neznamy.tab.shared;
 
 import lombok.Getter;
 import lombok.NonNull;
-import lombok.Setter;
 import org.jetbrains.annotations.NotNull;
 
 /**
@@ -14,6 +13,8 @@ public enum ProtocolVersion {
     UNKNOWN_SERVER_VERSION ("Unknown"),
     UNKNOWN_CLIENT_VERSION ("Unknown"),
     PROXY   ("Proxy"),
+    V1_20_4 (765),
+    V1_20_3 (765),
     V1_20_2 (764),
     V1_20_1 (763),
     V1_20   (763),
@@ -72,19 +73,21 @@ public enum ProtocolVersion {
     V1_6_1  (73),
     V1_5_2  (61),
     V1_5_1  (60),
-    V1_5    (60);
+    V1_5    (60),
+    V1_4_7  (51),
+    V1_4_6  (51);
 
     /** Newest MC version this plugin jar knows */
-    public static final ProtocolVersion LATEST_KNOWN_VERSION = ProtocolVersion.V1_20_2;
+    public static final ProtocolVersion LATEST_KNOWN_VERSION = ProtocolVersion.V1_20_3;
 
-    /** Version's network id found at https://wiki.vg/Protocol_version_numbers */
+    /** Version's network id found at <a href="https://wiki.vg/Protocol_version_numbers">wiki.vg</a> */
     private final int networkId;
 
     /** Version's minor version, such as 16 for 1.16.x. Allowing override to
      * set minor version of UNKNOWN_SERVER_VERSION value to value from package to fix compatibility
      * with server forks that set bukkit version field value to "Unknown".
      */
-    @Setter private int minorVersion;
+    private final int minorVersion;
 
     /** Version's friendly name displayed in %player-version% placeholder */
     @NotNull private final String friendlyName;
@@ -109,7 +112,7 @@ public enum ProtocolVersion {
      */
     ProtocolVersion(@NotNull String friendlyName) {
         this.networkId = 999;
-        this.minorVersion = 18;
+        this.minorVersion = 20;
         this.friendlyName = friendlyName;
     }
 

shared/src/main/java/me/neznamy/tab/shared/TabConstants.java

@@ -19,7 +19,7 @@ public class TabConstants {
 
     public static final String NO_GROUP = "NONE";
     public static final String DEFAULT_GROUP = "_DEFAULT_";
-    public static final String PLUGIN_MESSAGE_CHANNEL_NAME = "tab:bridge-4";
+    public static final String PLUGIN_MESSAGE_CHANNEL_NAME = "tab:bridge-5";
     public static final String REDIS_CHANNEL_NAME = PLUGIN_NAME;
     public static final String PIPELINE_HANDLER_NAME = PLUGIN_NAME;
 
@@ -80,7 +80,6 @@ public class TabConstants {
         public static final String COMMAND_AUTOCOMPLETE             = "tab.tabcomplete";
         public static final String COMMAND_DATA_REMOVE              = "tab.remove";
         public static final String COMMAND_PROPERTY_CHANGE_PREFIX   = "tab.change.";
-        public static final String COMMAND_WIDTH                    = "tab.width";
 
         public static final String COMMAND_BOSSBAR_ANNOUNCE         = "tab.announce.bar";
         public static final String COMMAND_BOSSBAR_TOGGLE           = "tab.bossbar.toggle";
@@ -130,13 +129,6 @@ public class TabConstants {
         public static final String NAMETAG = "nametag";
         public static final String BELOWNAME = "belowname";
 
-        public static final String SCOREBOARD_TITLE = "scoreboard-title";
-
-        public static final String BELOWNAME_NUMBER = "belowname-number";
-        public static final String BELOWNAME_TEXT = "belowname-text";
-
-        public static final String YELLOW_NUMBER = "yellow-number";
-
         public static String bossbarTitle(String name) {
             return "bossbar-title-" + name;
         }
@@ -153,17 +145,9 @@ public class TabConstants {
             return "bossbar-style-" + name;
         }
 
-        public static String scoreboardPrefix(String scoreboard, int lineNumber) {
-            return scoreboard + "-" + lineNumber + "-prefix";
-        }
-
         public static String scoreboardName(String scoreboard, int lineNumber) {
             return scoreboard + "-" + lineNumber + "-name";
         }
-
-        public static String scoreboardSuffix(String scoreboard, int lineNumber) {
-            return scoreboard + "-" + lineNumber + "-suffix";
-        }
     }
 
     /**
@@ -213,6 +197,10 @@ public class TabConstants {
         }
 
         public static String scoreboardLine(String scoreboard, int index) {
+            return "scoreboard-line-" + scoreboard + "-" + index;
+        }
+
+        public static String scoreboardScore(String scoreboard, int index) {
             return "scoreboard-score-" + scoreboard + "-" + index;
         }
 

shared/src/main/java/me/neznamy/tab/shared/backend/features/unlimitedtags/ArmorStand.java

@@ -123,7 +123,7 @@ public class ArmorStand {
     public boolean calculateVisibility() {
         if (manager.isArmorStandsAlwaysVisible()) return true;
         if (owner.isDisguised() || manager.isOnBoat(owner)) return false;
-        return owner.getGamemode() != 3 && !manager.hasHiddenNameTag(owner) && property.get().length() > 0 &&
+        return owner.getGamemode() != 3 && !manager.hasHiddenNameTag(owner) && !property.get().isEmpty() &&
                 !manager.getUnlimitedDisableChecker().isDisabledPlayer(owner);
     }
 
@@ -136,10 +136,10 @@ public class ArmorStand {
      * @return  {@code true} if it's empty, {@code false} if not
      */
     protected boolean isNameVisiblyEmpty(@NotNull String displayName) {
-        if (displayName.length() == 0) return true;
+        if (displayName.isEmpty()) return true;
         String rawText = displayName.contains(" ") ? displayName.replace(" ", "") : displayName;
         if (!rawText.startsWith(EnumChatFormat.COLOR_STRING) && !rawText.startsWith("&") && !rawText.startsWith("#")) return false;
-        return IChatBaseComponent.fromColoredText(rawText).toRawText().length() == 0;
+        return IChatBaseComponent.fromColoredText(rawText).toRawText().isEmpty();
     }
 
     /**

shared/src/main/java/me/neznamy/tab/shared/backend/features/unlimitedtags/BackendArmorStandManager.java

@@ -144,7 +144,7 @@ public class BackendArmorStandManager implements ArmorStandManager {
         double currentY = -0.26;
         for (ArmorStand as : armorStandArray) {
             if (as.isStaticOffset()) continue;
-            if (as.getProperty().get().length() != 0) {
+            if (!as.getProperty().get().isEmpty()) {
                 currentY += 0.26;
                 as.setOffset(currentY);
             }

shared/src/main/java/me/neznamy/tab/shared/chat/ChatModifier.java

@@ -9,23 +9,23 @@ import org.json.simple.JSONObject;
 @Data @NoArgsConstructor
 public class ChatModifier {
 
-    @Nullable
-    private TextColor color;
+    @Nullable private TextColor color;
     private boolean bold;
     private boolean italic;
     private boolean underlined;
     private boolean strikethrough;
     private boolean obfuscated;
-    @Nullable
-    private String font;
+    @Nullable private ClickEvent clickEvent;
+    @Nullable private String font;
 
     public ChatModifier(@NotNull ChatModifier modifier) {
-        this.color = modifier.color == null ? null : new TextColor(modifier.color);
+        if (modifier.color != null) color = new TextColor(modifier.color);
         this.bold = modifier.bold;
         this.italic = modifier.italic;
         this.underlined = modifier.underlined;
         this.strikethrough = modifier.strikethrough;
         this.obfuscated = modifier.obfuscated;
+        if (modifier.clickEvent != null) this.clickEvent = new ClickEvent(modifier.clickEvent.getAction(), modifier.clickEvent.getValue());
         this.font = modifier.font;
     }
 
@@ -39,6 +39,12 @@ public class ChatModifier {
         if (underlined) json.put("underlined", true);
         if (strikethrough) json.put("strikethrough", true);
         if (obfuscated) json.put("obfuscated", true);
+        if (clickEvent != null) {
+            JSONObject click = new JSONObject();
+            click.put("action", clickEvent.getAction().name().toLowerCase());
+            click.put("value", clickEvent.getValue());
+            json.put("clickEvent", click);
+        }
         if (font != null) json.put("font", font);
         return json;
     }

shared/src/main/java/me/neznamy/tab/shared/chat/ClickEvent.java

@@ -0,0 +1,23 @@
+package me.neznamy.tab.shared.chat;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import org.jetbrains.annotations.NotNull;
+
+@Data
+@AllArgsConstructor
+public class ClickEvent {
+
+    @NotNull private Action action;
+    @NotNull private String value;
+
+    public enum Action {
+
+        OPEN_URL,
+        OPEN_FILE,
+        RUN_COMMAND,
+        SUGGEST_COMMAND,
+        CHANGE_PAGE, //since 1.8
+        COPY_TO_CLIPBOARD //since 1.15
+    }
+}

shared/src/main/java/me/neznamy/tab/shared/chat/EnumChatFormat.java

@@ -8,6 +8,7 @@ import org.jetbrains.annotations.Nullable;
 /**
  * An enum containing all possible legacy color codes and magic codes. Also contains handy color-related methods.
  */
+@Getter
 public enum EnumChatFormat {
 
     BLACK('0', 0x000000),
@@ -43,22 +44,22 @@ public enum EnumChatFormat {
     public static final String COLOR_STRING = String.valueOf(COLOR_CHAR);
 
     /** Character representing the color or magic code */
-    @Getter private final char character;
+    private final char character;
 
     /** Red value of this constant, 0 for magic codes */
-    @Getter private final short red;
+    private final short red;
 
     /** Green value of this constant, 0 for magic codes */
-    @Getter private final short green;
+    private final short green;
 
     /** Blue value of this constant, 0 for magic codes */
-    @Getter private final short blue;
+    private final short blue;
 
     /** Color as a hex code, 0 for magic codes */
-    @Getter private final int hexCode;
+    private final int hexCode;
 
     /** Color symbol followed by constant's character */
-    @Getter private final String format;
+    private final String format;
 
     /**
      * Constructs new color instance with given character and hex code
@@ -115,10 +116,10 @@ public enum EnumChatFormat {
      * @return  last used color code in given string or WHITE if nothing is found
      */
     public static @NotNull EnumChatFormat lastColorsOf(@NotNull String string) {
-        if (string.length() == 0) return EnumChatFormat.WHITE;
+        if (string.isEmpty()) return EnumChatFormat.WHITE;
         String legacyText = RGBUtils.getInstance().convertRGBtoLegacy(string);
         String last = getLastColors(legacyText);
-        if (last.length() > 0) {
+        if (!last.isEmpty()) {
             char c = last.toCharArray()[1];
             for (EnumChatFormat e : VALUES) {
                 if (e.character == c) return e;

shared/src/main/java/me/neznamy/tab/shared/chat/IChatBaseComponent.java

@@ -124,7 +124,7 @@ public class IChatBaseComponent {
      * @return  serialized string
      */
     public @NotNull String toString(@NotNull ProtocolVersion clientVersion) {
-        if (extra == null && (text == null || text.length() == 0)) return EMPTY_COMPONENT;
+        if (extra == null && (text == null || text.isEmpty())) return EMPTY_COMPONENT;
         targetVersion = clientVersion;
         for (IChatBaseComponent child : getExtra()) {
             child.targetVersion = clientVersion;
@@ -337,4 +337,9 @@ public class IChatBaseComponent {
     public static @NotNull IChatBaseComponent optimizedComponent(@NotNull String text) {
         return stringCache.get(text, null);
     }
+
+    public static @Nullable IChatBaseComponent emptyToNullOptimizedComponent(@NotNull String text) {
+        if (text.isEmpty()) return null;
+        return optimizedComponent(text);
+    }
 }

shared/src/main/java/me/neznamy/tab/shared/chat/rgb/format/MiniMessageFormat.java

@@ -11,12 +11,15 @@ import org.jetbrains.annotations.NotNull;
 public class MiniMessageFormat implements RGBFormatter {
 
     @Override
-    public @NotNull String reformat(@NotNull String text) {
-        if (text.contains("<") && !text.contains(EnumChatFormat.COLOR_STRING)) {
-            try {
-                return LegacyComponentSerializer.legacySection().serialize(MiniMessage.miniMessage().deserialize(text));
-            } catch (Throwable ignored) {}
+    @NotNull
+    public String reformat(@NotNull String text) {
+        if (!text.contains("<")) return text; // User did not even attempt to use MiniMessage
+        String modified = text.replace(EnumChatFormat.WHITE.getFormat(), "<white>"); // Forced &f in scoreboard
+        if (modified.contains(EnumChatFormat.COLOR_STRING)) return text;
+        try {
+            return LegacyComponentSerializer.legacySection().serialize(MiniMessage.miniMessage().deserialize(modified));
+        } catch (Throwable ignored) {
+            return text;
         }
-        return text;
     }
 }