4.1.5

# Conflicts:
#	build.gradle.kts

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -18,6 +18,14 @@ body:
     validations:
       required: true
 
+  - type: textarea
+    attributes:
+      label: Plugin list
+      description: Full list of plugins (output of /plugins)
+      placeholder: ...
+    validations:
+      required: true
+
   - type: textarea
     attributes:
       label: Describe the bug

.github/ISSUE_TEMPLATE/config.yml

@@ -1 +1,5 @@
-blank_issues_enabled: false
+blank_issues_enabled: false
+contact_links:
+  - name: Support
+    url: https://discord.gg/YPqXt63YQj
+    about: Fresh new community discord providing support with all plugins, including TAB

.github/workflows/build.yml

@@ -8,14 +8,14 @@ jobs:
     name: Build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3.3.0 #https://github.com/actions/checkout/releases
+      - uses: actions/checkout@v4 #https://github.com/actions/checkout/releases
         with:
           fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
-      - name: Set up JDK 17
-        uses: actions/setup-java@v3.9.0 #https://github.com/actions/setup-java/releases
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4 #https://github.com/actions/setup-java/releases
         with:
           distribution: 'temurin'
-          java-version: 17
+          java-version: 21
       - name: Cache SonarCloud packages
         uses: actions/cache@v3.2.3 #https://github.com/actions/cache/releases
         with:

README.md

@@ -6,16 +6,16 @@ More information can be found at [Why TAB?](https://github.com/NEZNAMY/TAB/wiki/
 # 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).
+[SpigotMC](https://www.spigotmc.org/resources/57806/), [Modrinth](https://modrinth.com/plugin/tab-was-taken) or [BuiltByBit](https://builtbybit.com/resources/20631).
 
 ### 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).  
+from [GitHub actions](https://github.com/NEZNAMY/TAB/actions) (you must be logged into GitHub to be able to download it).  
 
 # Compiling
-Compilation requires JDK 17 and up.  
+Compilation requires JDK 21 and up.  
 To compile the plugin, run `./gradlew build` from the terminal.  
 Once the plugin compiles, grab the jar from `/jar/build/libs/` folder.  
 The universal jar contains all modules for all supported platforms.
@@ -46,12 +46,13 @@ Here is the full list of potential services and their status:
 | Wiki updates<sup>1</sup>      | ✔            |
 | Feature requests              | ❌            |
 | Customer support<sup>2</sup>  | ✔            |
-| Free user support<sup>3</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>2</sup> - Unrestricted assistance with the plugin for those, who bought a copy of the plugin when it was purchasable.  
+<sup>3</sup> - Unlimited access to my free time for everyone in the world.  
 <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.  
+  
+*Instead, you can use [this fresh new community discord](https://discord.gg/YPqXt63YQj) made by a nice person who will provide this service.  

api/build.gradle.kts

@@ -1,5 +1,5 @@
 dependencies {
-    compileOnlyApi("org.jetbrains:annotations:24.0.1")
+    compileOnlyApi("org.jetbrains:annotations:24.1.0")
 }
 
 tasks.javadoc {

api/src/main/java/me/neznamy/tab/api/TabPlayer.java

@@ -1,5 +1,6 @@
 package me.neznamy.tab.api;
 
+import lombok.NonNull;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -8,6 +9,7 @@ import java.util.UUID;
 /**
  * An interface representing a player
  */
+@SuppressWarnings("unused") // API class
 public interface TabPlayer {
 
     /**
@@ -27,7 +29,7 @@ public interface TabPlayer {
     /**
      * Returns platform-specific entity
      *
-     * @return  an instance of bukkit/bungee player depending on platform
+     * @return  platform's player object
      */
     @NotNull Object getPlayer();
 
@@ -66,4 +68,27 @@ public interface TabPlayer {
      * @see     #setTemporaryGroup(String)
      */
     boolean hasTemporaryGroup();
+
+    /**
+     * Changes expected profile name of the player. This adapts all name-bound features
+     * to use this new profile name if another plugin changed profile name of the player. <p>
+     * Automatic profile name change detection is available on Bukkit, BungeeCord and Fabric,
+     * therefore using this is redundant there. This function is only needed on Sponge and Velocity,
+     * where the detection is not available. <p>
+     * Warning: This function does NOT change player's profile name, it only updates the tracked
+     * name inside the plugin.
+     *
+     * @param   profileName
+     *          New expected profile name
+     */
+    void setExpectedProfileName(@NonNull String profileName);
+
+    /**
+     * Returns player's expected profile name. This defaults to player's username, but may
+     * get changed by other plugins and then detected by TAB.
+     *
+     * @return  Player's expected profile name
+     */
+    @NotNull
+    String getExpectedProfileName();
 }

api/src/main/java/me/neznamy/tab/api/bossbar/BarColor.java

@@ -4,13 +4,27 @@ package me.neznamy.tab.api.bossbar;
  * An enum representing all available BossBar colors.
  * Calling ordinal() will return color's network ID.
  */
+@SuppressWarnings("unused") // API class
 public enum BarColor {
 
+    /** Pink color */
     PINK,
+
+    /** Blue color */
     BLUE,
+
+    /** Red color */
     RED,
+
+    /** Green color */
     GREEN,
+
+    /** Yellow color */
     YELLOW,
+
+    /** Purple color */
     PURPLE,
+
+    /** White color */
     WHITE
 }

api/src/main/java/me/neznamy/tab/api/bossbar/BarStyle.java

@@ -4,11 +4,21 @@ package me.neznamy.tab.api.bossbar;
  * An enum representing all available BossBar styles.
  * Calling ordinal() will return style's network ID.
  */
+@SuppressWarnings("unused") // API class
 public enum BarStyle {
 
+    /** Fully solid line */
     PROGRESS,
+
+    /** Line segmented into 6 parts */
     NOTCHED_6,
+
+    /** Line segmented into 10 parts */
     NOTCHED_10,
+
+    /** Line segmented into 12 parts */
     NOTCHED_12,
+
+    /** Line segmented into 20 parts */
     NOTCHED_20
 }

api/src/main/java/me/neznamy/tab/api/bossbar/BossBar.java

@@ -205,7 +205,7 @@ public interface BossBar {
      *          Player to check
      * @return  {@code true} if player is allowed to see this Boss Bar, {@code false} if not.
      */
-    boolean containsPlayer(TabPlayer player);
+    boolean containsPlayer(@NonNull TabPlayer player);
 
     /**
      * Returns {@code true} if this boss bar is configured as announcement-only bar,

api/src/main/java/me/neznamy/tab/api/bossbar/BossBarManager.java

@@ -17,6 +17,7 @@ import org.jetbrains.annotations.Nullable;
  * This requires the BossBar feature to be enabled in config, otherwise the method will
  * return {@code null}.
  */
+@SuppressWarnings("unused") // API class
 public interface BossBarManager {
 
     /**

api/src/main/java/me/neznamy/tab/api/event/EventBus.java

@@ -6,6 +6,7 @@ import lombok.NonNull;
  * The event bus. This is used to register event listeners/handlers for
  * handling events that may be fired by TAB.
  */
+@SuppressWarnings("unused") // API class
 public interface EventBus {
 
     /**

api/src/main/java/me/neznamy/tab/api/nametag/NameTagManager.java

@@ -12,6 +12,7 @@ import org.jetbrains.annotations.Nullable;
  * This requires the Team feature to be enabled in config, otherwise the method will
  * return {@code null}.
  */
+@SuppressWarnings("unused") // API class
 public interface NameTagManager {
 
     /**
@@ -150,13 +151,51 @@ public interface NameTagManager {
      */
     void setSuffix(@NonNull TabPlayer player, @Nullable String suffix);
 
-    @Nullable String getCustomPrefix(@NonNull TabPlayer player);
+    /**
+     * Returns custom prefix assigned using {@link #setPrefix(TabPlayer, String)}.
+     * If no custom prefix is set, returns {@code null}.
+     *
+     * @param   player
+     *          Player to get custom prefix of
+     * @return  Custom prefix assigned using the API.
+     * @see     #setPrefix(TabPlayer, String)
+     * @see     #getOriginalPrefix(TabPlayer)
+     */
+    @Nullable
+    String getCustomPrefix(@NonNull TabPlayer player);
 
-    @Nullable String getCustomSuffix(@NonNull TabPlayer player);
+    /**
+     * Returns custom suffix assigned using {@link #setSuffix(TabPlayer, String)}.
+     * If no custom suffix is set, returns {@code null}.
+     *
+     * @param   player
+     *          Player to get custom suffix of
+     * @return  Custom suffix assigned using the API.
+     * @see     #setSuffix(TabPlayer, String)
+     * @see     #getOriginalSuffix(TabPlayer)
+     */
+    @Nullable
+    String getCustomSuffix(@NonNull TabPlayer player);
 
-    @NonNull String getOriginalPrefix(@NonNull TabPlayer player);
+    /**
+     * Returns original prefix assigned by the plugin using internal logic.
+     * @param   player
+     *          Player to get original prefix of
+     * @return  Original prefix assigned by the plugin's internal logic.
+     * @see     #getCustomPrefix(TabPlayer)
+     */
+    @NonNull
+    String getOriginalPrefix(@NonNull TabPlayer player);
 
-    @NonNull String getOriginalSuffix(@NonNull TabPlayer player);
+    /**
+     * Returns original suffix assigned by the plugin using internal logic.
+     * @param   player
+     *          Player to get original suffix of
+     * @return  Original suffix assigned by the plugin's internal logic.
+     * @see     #getCustomSuffix(TabPlayer)
+     */
+    @NonNull
+    String getOriginalSuffix(@NonNull TabPlayer player);
 
     /**
      * Toggles name tag visibility view on all players for specified player.

api/src/main/java/me/neznamy/tab/api/nametag/UnlimitedNameTagManager.java

@@ -15,6 +15,7 @@ import org.jetbrains.annotations.Nullable;
  * This requires both Team and Unlimited name tag features to be enabled in config, otherwise the method will
  * return {@code null} or not be an instance of this class.
  */
+@SuppressWarnings("unused") // API class
 public interface UnlimitedNameTagManager extends NameTagManager {
 
     /**

api/src/main/java/me/neznamy/tab/api/placeholder/PlaceholderManager.java

@@ -13,6 +13,7 @@ import java.util.function.Supplier;
  * An interface allowing placeholder registration. Instance can be
  * obtained using {@link TabAPI#getPlaceholderManager()}
  */
+@SuppressWarnings("unused") // API class
 public interface PlaceholderManager {
 
     /**

api/src/main/java/me/neznamy/tab/api/placeholder/PlayerPlaceholder.java

@@ -2,6 +2,7 @@ package me.neznamy.tab.api.placeholder;
 
 import lombok.NonNull;
 import me.neznamy.tab.api.TabPlayer;
+import org.jetbrains.annotations.Nullable;
 
 /**
  * Interface for player placeholders (placeholders returning different value for each player)
@@ -18,7 +19,7 @@ public interface PlayerPlaceholder extends Placeholder {
      * @param   value
      *          New value
      */
-    void updateValue(@NonNull TabPlayer player, @NonNull Object value);
+    void updateValue(@NonNull TabPlayer player, @Nullable Object value);
 
     /**
      * Force-updates placeholder value using previously provided update function.

api/src/main/java/me/neznamy/tab/api/placeholder/RelationalPlaceholder.java

@@ -2,10 +2,12 @@ package me.neznamy.tab.api.placeholder;
 
 import lombok.NonNull;
 import me.neznamy.tab.api.TabPlayer;
+import org.jetbrains.annotations.Nullable;
 
 /**
  * An interface for relational placeholders (returning different value for each player duo)
  */
+@SuppressWarnings("unused") // API class
 public interface RelationalPlaceholder extends Placeholder {
 
     /**
@@ -20,7 +22,7 @@ public interface RelationalPlaceholder extends Placeholder {
      * @param   value
      *          New value
      */
-    void updateValue(@NonNull TabPlayer viewer, @NonNull TabPlayer target, @NonNull Object value);
+    void updateValue(@NonNull TabPlayer viewer, @NonNull TabPlayer target, @Nullable Object value);
 
     /**
      * Force-updates placeholder value using previously provided update function.

api/src/main/java/me/neznamy/tab/api/placeholder/ServerPlaceholder.java

@@ -1,6 +1,6 @@
 package me.neznamy.tab.api.placeholder;
 
-import lombok.NonNull;
+import org.jetbrains.annotations.Nullable;
 
 /**
  * An interface for server placeholders (returning same value for all players)
@@ -15,7 +15,7 @@ public interface ServerPlaceholder extends Placeholder {
      * @param   value
      *          New value
      */
-    void updateValue(@NonNull Object value);
+    void updateValue(@Nullable Object value);
 
     /**
      * Force-updates placeholder value using previously provided update function.

api/src/main/java/me/neznamy/tab/api/scoreboard/Scoreboard.java

@@ -11,6 +11,7 @@ import java.util.List;
  * {@link ScoreboardManager#createScoreboard(String, String, List)},
  * for scoreboards from config {@link ScoreboardManager#getRegisteredScoreboards()}.
  */
+@SuppressWarnings("unused") // API class
 public interface Scoreboard {
 
     /**

api/src/main/java/me/neznamy/tab/api/scoreboard/ScoreboardManager.java

@@ -16,6 +16,7 @@ import org.jetbrains.annotations.Nullable;
  * This requires the scoreboard feature to be enabled in config,
  * the method will return {@code null} otherwise.
  */
+@SuppressWarnings("unused") // API class
 public interface ScoreboardManager {
 
     /**

api/src/main/java/me/neznamy/tab/api/tablist/HeaderFooterManager.java

@@ -12,6 +12,7 @@ import org.jetbrains.annotations.Nullable;
  * This requires the Header/footer feature to be enabled in config, otherwise
  * the method will return {@code null}.
  */
+@SuppressWarnings("unused") // API class
 public interface HeaderFooterManager {
 
     /**

api/src/main/java/me/neznamy/tab/api/tablist/SortingManager.java

@@ -1,10 +1,18 @@
 package me.neznamy.tab.api.tablist;
 
 import lombok.NonNull;
+import me.neznamy.tab.api.TabAPI;
 import me.neznamy.tab.api.TabPlayer;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+/**
+ * Interface for managing player sorting by directly configuring
+ * team names of players. Instance can be obtained using
+ * {@link TabAPI#getSortingManager()}. If the feature is disabled,
+ * it will return {@code null}.
+ */
+@SuppressWarnings("unused") // API class
 public interface SortingManager {
 
     /**

api/src/main/java/me/neznamy/tab/api/tablist/TabListFormatManager.java

@@ -14,6 +14,7 @@ import org.jetbrains.annotations.Nullable;
  * This requires the feature to be enabled in config, otherwise the method will
  * return {@code null}.
  */
+@SuppressWarnings("unused") // API class
 public interface TabListFormatManager {
 
     /**

api/src/main/java/me/neznamy/tab/api/tablist/layout/Layout.java

@@ -7,6 +7,7 @@ import org.jetbrains.annotations.Nullable;
 /**
  * Interface representing a layout.
  */
+@SuppressWarnings("unused") // API class
 public interface Layout {
 
     /**

api/src/main/java/me/neznamy/tab/api/tablist/layout/LayoutManager.java

@@ -10,6 +10,7 @@ import org.jetbrains.annotations.Nullable;
  * {@link TabAPI#getLayoutManager()}. If the feature is disabled in
  * config, it will return {@code null}.
  */
+@SuppressWarnings("unused") // API class
 public interface LayoutManager {
 
     /**

build-logic/build.gradle.kts

@@ -4,6 +4,6 @@ plugins {
 
 dependencies {
     implementation("com.github.johnrengelman:shadow:8.1.1")
-    implementation("io.freefair.gradle:lombok-plugin:8.0.1")
-    implementation("fabric-loom:fabric-loom.gradle.plugin:1.1-SNAPSHOT")
+    implementation("io.freefair.gradle:lombok-plugin:8.6")
+    implementation("fabric-loom:fabric-loom.gradle.plugin:1.6-SNAPSHOT")
 }

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

@@ -31,6 +31,6 @@ tasks {
 
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(17))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }

build.gradle.kts

@@ -4,7 +4,7 @@ plugins {
 
 allprojects {
     group = "me.neznamy"
-    version = "4.1.0"
+    version = "4.1.5"
     description = "An all-in-one solution that works"
 
     ext.set("id", "tab")
@@ -20,16 +20,7 @@ val platforms = setOf(
     projects.sponge8,
     projects.fabric,
     projects.fabric.v1144,
-    projects.fabric.v1152,
-    projects.fabric.v1165,
-    projects.fabric.v117,
-    projects.fabric.v1171,
-    projects.fabric.v1182,
-    projects.fabric.v1192,
-    projects.fabric.v1193,
-    projects.fabric.v1201,
-    projects.fabric.v1202,
-    projects.fabric.v1203
+    projects.fabric.v1182
 ).map { it.dependencyProject }
 
 val special = setOf(

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

@@ -17,23 +17,47 @@ import org.jetbrains.annotations.NotNull;
 /**
  * The core for bukkit forwarding events into all enabled features
  */
-public class BukkitEventListener extends EventListener<Player> implements Listener {
+public class BukkitEventListener implements EventListener<Player>, Listener {
 
+    /**
+     * Listens to player quit event.
+     *
+     * @param   e
+     *          Disconnect event
+     */
     @EventHandler(priority = EventPriority.HIGHEST)
     public void onQuit(PlayerQuitEvent e) {
         quit(e.getPlayer().getUniqueId());
     }
 
+    /**
+     * Listens to player join event.
+     *
+     * @param   e
+     *          Join event
+     */
     @EventHandler(priority = EventPriority.LOW)
     public void onJoin(PlayerJoinEvent e) {
         join(e.getPlayer());
     }
 
+    /**
+     * Listens to world change event.
+     *
+     * @param   e
+     *          World change event
+     */
     @EventHandler(priority = EventPriority.LOWEST)
     public void onWorldChange(PlayerChangedWorldEvent e) {
         worldChange(e.getPlayer().getUniqueId(), e.getPlayer().getWorld().getName());
     }
 
+    /**
+     * Listens to command event to potentially cancel it.
+     *
+     * @param   e
+     *          Command event
+     */
     @EventHandler
     public void onCommand(PlayerCommandPreprocessEvent e) {
         if (command(e.getPlayer().getUniqueId(), e.getMessage())) e.setCancelled(true);

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

@@ -1,42 +1,25 @@
 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.shared.TAB;
 import me.neznamy.tab.shared.features.injection.NettyPipelineInjector;
-import me.neznamy.tab.shared.features.sorting.Sorting;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.FunctionWithException;
 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;
 
 /**
- * Pipeline injection for bukkit
+ * Pipeline injection for Bukkit 1.8+.
  */
 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;
+    /** Function for getting player's channel */
+    private static FunctionWithException<TabPlayer, Channel> getChannel;
 
     /**
      * Constructs new instance
@@ -45,185 +28,48 @@ public class BukkitPipelineInjector extends NettyPipelineInjector {
         super("packet_handler");
     }
 
+    /**
+     * Attempts to load required classes, fields and methods and marks class as available.
+     * If something fails, error message is printed and class is not marked as available.
+     */
     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);
+            Method getHandle = BukkitReflection.getBukkitClass("entity.CraftPlayer").getMethod("getHandle");
+            Field PLAYER_CONNECTION = ReflectionUtils.getOnlyField(EntityPlayer, PlayerConnection);
+            Field NETWORK_MANAGER;
             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;
+            Field CHANNEL = ReflectionUtils.getOnlyField(NetworkManager, Channel.class);
+            getChannel = player -> (Channel) CHANNEL.get(NETWORK_MANAGER.get(PLAYER_CONNECTION.get(getHandle.invoke(player.getPlayer()))));
         } 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.");
+            BukkitUtils.compatibilityError(e, "network channel injection", null,
+                    "Unlimited nametag mode not working and being replaced with regular nametags",
+                    "Anti-override for tablist & nametags not working",
+                    "Compatibility with nickname plugins changing player names will not work",
+                    "Scoreboard will not be checking for other plugins");
         }
     }
 
+    /**
+     * Returns {@code true} if pipeline injection is available, {@code false} if not.
+     *
+     * @return  {@code true} if pipeline injection is available, {@code false} if not
+     */
+    public static boolean isAvailable() {
+        return getChannel != null;
+    }
+
     @Override
     @Nullable
     @SneakyThrows
     protected Channel getChannel(@NotNull TabPlayer player) {
-        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.displayPacketData.DisplayObjective_POSITION.get(packet)).ordinal();
-        } else {
-            position = PacketScoreboard.displayPacketData.DisplayObjective_POSITION.getInt(packet);
-        }
-        TAB.getInstance().getFeatureManager().onDisplayObjective(player, position,
-                (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));
-    }
-
-    @Override
-    public boolean isDisplayObjective(@NotNull Object 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) {
-        if (!PacketScoreboard.isAvailable()) return false;
-        return PacketScoreboard.teamPacketData.TeamPacketClass.isInstance(packet);
-    }
-
-    @Override
-    public boolean isPlayerInfo(@NotNull Object packet) {
-        return BukkitTabList.PlayerInfoClass.isInstance(packet);
-    }
-
-    @Override
-    public void onPlayerInfo(@NotNull TabPlayer receiver, @NotNull Object packet) {
-        if (BukkitReflection.is1_19_3Plus()) {
-            onPlayerInfo1_19_3(receiver, packet);
-        } else {
-            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;
-            id = (UUID) BukkitTabList.PlayerInfoData_UUID.get(nmsData);
-            Object displayName = null;
-            int latency = 0;
-            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).getTabList().toComponent(newDisplayName);
-            }
-            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());
-            }
-            // 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)));
-        }
-        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());
-            }
-        }
-    }
-
-    @Override
-    public boolean isLogin(@NotNull Object packet) {
-        return false;
-    }
-
-    @SuppressWarnings("unchecked")
-    @Override
-    @SneakyThrows
-    public void modifyPlayers(@NotNull Object packetPlayOutScoreboardTeam) {
-        if (!PacketScoreboard.isAvailable()) return;
-        if (TAB.getInstance().getNameTagManager() == null) return;
-        int action = PacketScoreboard.teamPacketData.TeamPacket_ACTION.getInt(packetPlayOutScoreboardTeam);
-        if (action == 1 || action == 2 || action == 4) return;
-        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<>();
-        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);
-            }
-        }
-        PacketScoreboard.teamPacketData.TeamPacket_PLAYERS.set(packetPlayOutScoreboardTeam, newList);
+        return getChannel.apply(player);
     }
 }

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

@@ -1,13 +1,9 @@
 package me.neznamy.tab.platforms.bukkit;
 
-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;
-import me.neznamy.tab.shared.chat.EnumChatFormat;
 import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.util.ReflectionUtils;
-import org.bukkit.Bukkit;
 import org.bukkit.plugin.java.JavaPlugin;
 
 /**
@@ -17,44 +13,12 @@ public class BukkitTAB extends JavaPlugin {
 
     @Override
     public void onEnable() {
-        if (!isVersionSupported()) {
-            Bukkit.getPluginManager().disablePlugin(this);
-            return;
-        }
-        TAB.create(ReflectionUtils.classExists("io.papermc.paper.threadedregions.RegionizedServer") ?
-                new FoliaPlatform(this) : new BukkitPlatform(this));
+        boolean folia = ReflectionUtils.classExists("io.papermc.paper.threadedregions.RegionizedServer");
+        TAB.create(folia ? new FoliaPlatform(this) : new BukkitPlatform(this));
     }
 
     @Override
     public void onDisable() {
-        //null check due to compatibility check making instance not get set on unsupported versions
-        if (TAB.getInstance() != null) TAB.getInstance().unload();
-    }
-    
-    /**
-     * Initializes all used NMS classes, constructors, fields and methods.
-     * Returns {@code true} if everything went successfully,
-     * {@code false} if anything went wrong.
-     *
-     * @return  {@code true} if server version is compatible, {@code false} if not
-     */
-    private boolean isVersionSupported() {
-        try {
-            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.getFriendlyName(), ProtocolVersion.LATEST_KNOWN_VERSION.getFriendlyName()
-                ));
-            } else {
-                Bukkit.getConsoleSender().sendMessage(EnumChatFormat.RED.getFormat() + "[TAB] A compatibility issue " +
-                        "with your server was found. Unless you are running some really weird server software, this is a bug.");
-            }
-            return false;
-        }
+        TAB.getInstance().unload();
     }
 }

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

@@ -1,269 +0,0 @@
-package me.neznamy.tab.platforms.bukkit;
-
-import com.mojang.authlib.GameProfile;
-import com.mojang.authlib.properties.Property;
-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.*;
-
-/**
- * TabList which support modifying many entries at once
- * for significantly better performance. For 1.7 players,
- * ViaVersion properly splits the packet into multiple, so
- * we don't need to worry about that here.
- * <p>
- * This class does not support server versions of 1.7 and
- * below, because of the massive differences in tab list
- * and packet fields.
- */
-@RequiredArgsConstructor
-@SuppressWarnings({"unchecked", "rawtypes"})
-public class BukkitTabList implements TabList {
-
-    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 Constructor<?> newClientboundPlayerInfoRemovePacket;
-    private static Class<?> EntityPlayer;
-
-    public static Constructor<?> newPlayerInfoData;
-    public static Field PlayerInfoData_UUID;
-    public static Field PlayerInfoData_Profile;
-    public static Field PlayerInfoData_Latency;
-    public static Field PlayerInfoData_GameMode;
-    public static Field PlayerInfoData_DisplayName;
-    public static Field PlayerInfoData_Listed;
-    public static Field PlayerInfoData_RemoteChatSession;
-
-    private static Object[] gameModes;
-
-    @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
-
-        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
-        PlayerInfoData_Profile = ReflectionUtils.getOnlyField(playerInfoDataClass, GameProfile.class);
-        PlayerInfoData_Latency = ReflectionUtils.getOnlyField(playerInfoDataClass, int.class);
-        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$a");
-            newClientboundPlayerInfoRemovePacket = ClientboundPlayerInfoRemovePacket.getConstructor(List.class);
-            newPlayerInfo = PlayerInfoClass.getConstructor(EnumSet.class, Collection.class);
-            ACTION = ReflectionUtils.getOnlyField(PlayerInfoClass, EnumSet.class);
-            PlayerInfoData_Listed = ReflectionUtils.getOnlyField(playerInfoDataClass, boolean.class);
-            PlayerInfoData_RemoteChatSession = ReflectionUtils.getOnlyField(playerInfoDataClass, RemoteChatSession$Data);
-            PlayerInfoData_UUID = ReflectionUtils.getOnlyField(playerInfoDataClass, UUID.class);
-        } else {
-            newPlayerInfo = PlayerInfoClass.getConstructor(ActionClass, Array.newInstance(EntityPlayer, 0).getClass());
-            ACTION = ReflectionUtils.getOnlyField(PlayerInfoClass, ActionClass);
-        }
-        gameModes = new Object[] {
-                Enum.valueOf(EnumGamemodeClass, "SURVIVAL"),
-                Enum.valueOf(EnumGamemodeClass, "CREATIVE"),
-                Enum.valueOf(EnumGamemodeClass, "ADVENTURE"),
-                Enum.valueOf(EnumGamemodeClass, "SPECTATOR")
-        };
-
-        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 (PlayerInfoClass == null) return;
-        if (ClientboundPlayerInfoRemovePacket != null) {
-            //1.19.3+
-            player.sendPacket(newClientboundPlayerInfoRemovePacket.newInstance(Collections.singletonList(entry)));
-        } else {
-            //1.19.2-
-            player.sendPacket(createPacket(Action.REMOVE_PLAYER, new Builder(entry).build()));
-        }
-    }
-
-    @Override
-    public void updateDisplayName(@NotNull UUID entry, @Nullable IChatBaseComponent displayName) {
-        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 (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 (PlayerInfoClass == null) return;
-        player.sendPacket(createPacket(Action.UPDATE_GAME_MODE, new Builder(entry).gameMode(gameMode).build()));
-    }
-
-    @Override
-    public void addEntry(@NotNull Entry entry) {
-        if (PlayerInfoClass == null) return;
-        player.sendPacket(createPacket(Action.ADD_PLAYER, entry));
-    }
-
-    @Override
-    @SneakyThrows
-    public void setPlayerListHeaderFooter(@NotNull IChatBaseComponent header, @NotNull IChatBaseComponent footer) {
-        if (HeaderFooter.getInstance() != null) HeaderFooter.getInstance().set(player, header, footer);
-    }
-
-    @SneakyThrows
-    @NotNull
-    private Object createPacket(@NotNull Action action, @NotNull Entry entry) {
-        Object packet;
-        List<Object> players = new ArrayList<>();
-        if (BukkitReflection.is1_19_3Plus()) {
-            EnumSet<?> actions;
-            if (action == Action.ADD_PLAYER) {
-                actions = EnumSet.allOf(ActionClass);
-            } else {
-                actions = EnumSet.of(Enum.valueOf(ActionClass, action.name()));
-            }
-            packet = newPlayerInfo.newInstance(actions, Collections.emptyList());
-            players.add(newPlayerInfoData.newInstance(
-                    entry.getUniqueId(),
-                    createProfile(entry.getUniqueId(), entry.getName(), entry.getSkin()),
-                    true,
-                    entry.getLatency(),
-                    gameModes[entry.getGameMode()],
-                    entry.getDisplayName() == null ? null : toComponent(entry.getDisplayName()),
-                    null
-            ));
-        } else {
-            packet = newPlayerInfo.newInstance(Enum.valueOf(ActionClass, action.name()), Array.newInstance(EntityPlayer, 0));
-            List<Object> parameters = new ArrayList<>();
-            if (newPlayerInfoData.getParameterTypes()[0] == PlayerInfoClass) {
-                parameters.add(packet);
-            }
-            parameters.add(createProfile(entry.getUniqueId(), entry.getName(), entry.getSkin()));
-            parameters.add(entry.getLatency());
-            parameters.add(gameModes[entry.getGameMode()]);
-            parameters.add(entry.getDisplayName() == null ? null : toComponent(entry.getDisplayName()));
-            if (BukkitReflection.getMinorVersion() >= 19) parameters.add(null);
-            players.add(newPlayerInfoData.newInstance(parameters.toArray()));
-        }
-        PLAYERS.set(packet, players);
-        return packet;
-    }
-
-    public Object toComponent(IChatBaseComponent component) {
-        return componentCache.get(component, player.getVersion());
-    }
-
-    @NotNull
-    private GameProfile createProfile(@NotNull UUID id, @Nullable String name, @Nullable Skin skin) {
-        GameProfile profile = new GameProfile(id, name == null ? "" : name);
-        if (skin != null) {
-            profile.getProperties().put(TabList.TEXTURES_PROPERTY,
-                    new Property(TabList.TEXTURES_PROPERTY, skin.getValue(), skin.getSignature()));
-        }
-        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

@@ -1,25 +1,20 @@
 package me.neznamy.tab.platforms.bukkit;
 
 import lombok.Getter;
-import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.bukkit.bossbar.BossBarLoader;
 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.entity.PacketEntityView;
 import me.neznamy.tab.platforms.bukkit.nms.PingRetriever;
 import me.neznamy.tab.platforms.bukkit.platform.BukkitPlatform;
 import me.neznamy.tab.platforms.bukkit.scoreboard.ScoreboardLoader;
+import me.neznamy.tab.platforms.bukkit.tablist.TabListBase;
+import me.neznamy.tab.shared.backend.entityview.DummyEntityView;
 import me.neznamy.tab.shared.backend.entityview.EntityView;
 import me.neznamy.tab.shared.platform.BossBar;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.chat.TabComponent;
 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.shared.platform.Scoreboard;
 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;
@@ -33,20 +28,17 @@ import org.jetbrains.annotations.Nullable;
 @Getter
 public class BukkitTabPlayer extends BackendTabPlayer {
 
-    private static final boolean spigot = ReflectionUtils.classExists("org.bukkit.entity.Player$Spigot");
+    @NotNull
+    private final Scoreboard<BukkitTabPlayer, ?> scoreboard = ScoreboardLoader.getInstance().apply(this);
 
     @NotNull
-    private final Scoreboard<BukkitTabPlayer> scoreboard = ScoreboardLoader.getInstance().apply(this);
+    private final TabListBase<?> tabList = TabListBase.getInstance().apply(this);
 
     @NotNull
-    private final BukkitTabList tabList = new BukkitTabList(this);
+    private final BossBar bossBar = BossBarLoader.findInstance(this);
 
     @NotNull
-    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);
+    private final EntityView entityView = PacketEntityView.isAvailable() ? new PacketEntityView(this) : new DummyEntityView();
 
     /**
      * Constructs new instance with given bukkit player
@@ -57,7 +49,7 @@ public class BukkitTabPlayer extends BackendTabPlayer {
      *          bukkit player
      */
     public BukkitTabPlayer(@NotNull BukkitPlatform platform, @NotNull Player p) {
-        super(platform, p, p.getUniqueId(), p.getName(), p.getWorld().getName());
+        super(platform, p, p.getUniqueId(), p.getName(), p.getWorld().getName(), platform.getServerVersion().getNetworkId());
     }
 
     @Override
@@ -66,23 +58,13 @@ public class BukkitTabPlayer extends BackendTabPlayer {
     }
 
     @Override
-    @SneakyThrows
     public int getPing() {
         return PingRetriever.getPing(getPlayer());
     }
 
-    @SneakyThrows
-    public void sendPacket(@NotNull Object nmsPacket) {
-        PacketSender.sendPacket(getPlayer(), nmsPacket);
-    }
-
     @Override
-    public void sendMessage(@NotNull IChatBaseComponent message) {
-        if (spigot) {
-            getPlayer().spigot().sendMessage(ComponentSerializer.parse(message.toString(getVersion())));
-        } else {
-            getPlayer().sendMessage(BukkitUtils.toBukkitFormat(message, getVersion().getMinorVersion() >= 16));
-        }
+    public void sendMessage(@NotNull TabComponent message) {
+        getPlayer().sendMessage(getPlatform().toBukkitFormat(message, getVersion().supportsRGB()));
     }
 
     @Override
@@ -107,11 +89,6 @@ public class BukkitTabPlayer extends BackendTabPlayer {
         return (Player) player;
     }
 
-    @Override
-    public boolean isOnline() {
-        return getPlayer().isOnline();
-    }
-
     @Override
     public BukkitPlatform getPlatform() {
         return (BukkitPlatform) platform;
@@ -119,7 +96,10 @@ public class BukkitTabPlayer extends BackendTabPlayer {
 
     @Override
     public boolean isVanished() {
-        return getPlayer().getMetadata("vanished").stream().anyMatch(MetadataValue::asBoolean);
+        for (MetadataValue v : getPlayer().getMetadata("vanished")) {
+            if (v.asBoolean()) return true;
+        }
+        return false;
     }
 
     @Override

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

@@ -3,12 +3,12 @@ package me.neznamy.tab.platforms.bukkit;
 import lombok.AccessLevel;
 import lombok.NoArgsConstructor;
 import lombok.SneakyThrows;
-import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
+import me.neznamy.tab.shared.ProtocolVersion;
 import me.neznamy.tab.shared.chat.EnumChatFormat;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.Collection;
 
@@ -18,6 +18,11 @@ import java.util.Collection;
 @NoArgsConstructor(access = AccessLevel.PRIVATE)
 public class BukkitUtils {
 
+    /** Whether compatibility exceptions should be printed or not, enabling when adding support for new versions */
+    public static final boolean PRINT_EXCEPTIONS = false;
+
+    private static boolean compatibilityIssue;
+
     /**
      * Returns online players from Bukkit API. This requires reflection, as return type changed in 1.8,
      * and we want to avoid errors.
@@ -39,34 +44,45 @@ public class BukkitUtils {
     }
 
     /**
-     * Converts component to legacy string using bukkit RGB format if supported by both server and client.
-     * If not, closest legacy color is used instead.
+     * Prints a console warn that some compatibility issue was found.
      *
-     * @param   component
-     *          Component to convert
-     * @param   rgbClient
-     *          Whether client accepts RGB colors or not.
-     * @return  Converted string using bukkit color format
+     * @param   exception
+     *          Exception thrown when initializing fields, if applicable
+     * @param   failedCheck
+     *          Check that failed
+     * @param   fallback
+     *          Fallback implementation, if available
+     * @param   missingFeatures
+     *          Features that will be broken because of the incompatibility
      */
-    @NotNull
-    public static String toBukkitFormat(@NotNull IChatBaseComponent component, boolean rgbClient) {
+    public static void compatibilityError(@NotNull Exception exception, @NotNull String failedCheck,
+                                          @Nullable String fallback, @NotNull String... missingFeatures) {
         StringBuilder sb = new StringBuilder();
-        if (component.getModifier().getColor() != null) {
-            if (BukkitReflection.getMinorVersion() >= 16 && rgbClient) {
-                String hexCode = component.getModifier().getColor().getHexCode();
-                char c = EnumChatFormat.COLOR_CHAR;
-                sb.append(c).append("x").append(c).append(hexCode.charAt(0)).append(c).append(hexCode.charAt(1))
-                        .append(c).append(hexCode.charAt(2)).append(c).append(hexCode.charAt(3))
-                        .append(c).append(hexCode.charAt(4)).append(c).append(hexCode.charAt(5));
-            } else {
-                sb.append(component.getModifier().getColor().getLegacyColor().getFormat());
-            }
+        sb.append(EnumChatFormat.RED);
+        sb.append("[TAB] Failed to initialize minecraft fields for ");
+        sb.append(failedCheck);
+        sb.append(" due to a compatibility error. ");
+        if (fallback != null) {
+            sb.append("Using fallback solution using ").append(fallback).append(". ");
+        } else {
+            sb.append("No fallback solution was found. ");
         }
-        sb.append(component.getModifier().getMagicCodes());
-        if (component.getText() != null) sb.append(component.getText());
-        for (IChatBaseComponent extra : component.getExtra()) {
-            sb.append(toBukkitFormat(extra, rgbClient));
+        if (missingFeatures.length > 0) sb.append("This will result in: ");
+        for (int i=0; i<missingFeatures.length; i++) {
+            sb.append("\n").append("#").append(i + 1).append(": ").append(missingFeatures[i]);
         }
-        return sb.toString();
+        Bukkit.getConsoleSender().sendMessage(sb.toString());
+        if (PRINT_EXCEPTIONS) exception.printStackTrace();
+        compatibilityIssue = true;
+    }
+
+    /**
+     * Sends a message asking user to update the plugin if some compatibility issue was found.
+     */
+    public static void sendCompatibilityMessage() {
+        if (!compatibilityIssue) return;
+        Bukkit.getConsoleSender().sendMessage(EnumChatFormat.RED + "[TAB] Please update the plugin to " +
+                "a version with native support for your server version for optimal experience. This plugin version " +
+                "was made for " + ProtocolVersion.V1_5.getFriendlyName() + " - " + ProtocolVersion.LATEST_KNOWN_VERSION.getFriendlyName() + ".");
     }
 }

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

@@ -0,0 +1,31 @@
+package me.neznamy.tab.platforms.bukkit.bossbar;
+
+import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
+import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
+import me.neznamy.tab.shared.platform.BossBar;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Class for finding BossBar implementation based on server and client version.
+ */
+public class BossBarLoader {
+
+    /**
+     * Finds best available instance for given player.
+     *
+     * @param   player
+     *          Player to find instance for
+     * @return  BossBar instance for player
+     */
+    @NotNull
+    public static BossBar findInstance(@NotNull BukkitTabPlayer player) {
+        // 1.9+ server, handle using API, potential 1.8 players are handled by ViaVersion
+        if (BukkitReflection.getMinorVersion() >= 9) return new BukkitBossBar(player);
+
+        // 1.9+ player on 1.8 server, handle using ViaVersion API
+        if (player.getVersion().getMinorVersion() >= 9) return new ViaBossBar(player);
+
+        // 1.8- server and player, use wither
+        return new EntityBossBar(player);
+    }
+}

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

@@ -3,8 +3,7 @@ package me.neznamy.tab.platforms.bukkit.bossbar;
 import lombok.RequiredArgsConstructor;
 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.chat.TabComponent;
 import me.neznamy.tab.shared.platform.BossBar;
 import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
 import org.bukkit.Bukkit;
@@ -36,7 +35,7 @@ public class BukkitBossBar implements BossBar {
     public void create(@NotNull UUID id, @NotNull String title, float progress, @NotNull BarColor color, @NotNull BarStyle style) {
         if (bossBars.containsKey(id)) return;
         org.bukkit.boss.BossBar bar = Bukkit.createBossBar(
-                BukkitUtils.toBukkitFormat(IChatBaseComponent.optimizedComponent(title), player.getVersion().getMinorVersion() >= 16),
+                player.getPlatform().toBukkitFormat(TabComponent.optimized(title), player.getVersion().supportsRGB()),
                 org.bukkit.boss.BarColor.valueOf(color.name()),
                 styles[style.ordinal()]
         );
@@ -47,7 +46,7 @@ public class BukkitBossBar implements BossBar {
 
     @Override
     public void update(@NotNull UUID id, @NotNull String title) {
-        bossBars.get(id).setTitle(BukkitUtils.toBukkitFormat(IChatBaseComponent.optimizedComponent(title), player.getVersion().getMinorVersion() >= 16));
+        bossBars.get(id).setTitle(player.getPlatform().toBukkitFormat(TabComponent.optimized(title), player.getVersion().supportsRGB()));
     }
 
     @Override

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

@@ -5,7 +5,7 @@ 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;
-import me.neznamy.tab.platforms.bukkit.nms.DataWatcher;
+import me.neznamy.tab.platforms.bukkit.entity.DataWatcher;
 import me.neznamy.tab.shared.backend.Location;
 import org.bukkit.entity.EntityType;
 import org.jetbrains.annotations.NotNull;
@@ -20,6 +20,15 @@ import java.util.UUID;
 @RequiredArgsConstructor
 public class EntityBossBar implements BossBar {
 
+    /** Max health of wither */
+    private static final int WITHER_MAX_HEALTH = 300;
+
+    /** Ideal value for invulnerable time for minimal wither size */
+    private static final int IDEAL_INVULNERABLE_TIME = 880;
+
+    /** Flag making entity invisible */
+    private static final byte INVISIBLE_FLAG = 1 << 5;
+
     /** Player this handler belongs to */
     @NotNull
     private final BukkitTabPlayer player;
@@ -27,12 +36,12 @@ public class EntityBossBar implements BossBar {
     @Override
     public void create(@NotNull UUID id, @NotNull String title, float progress, @NotNull BarColor color, @NotNull BarStyle style) {
         DataWatcher w = new DataWatcher();
-        float health = 300*progress;
+        float health = WITHER_MAX_HEALTH*progress;
         if (health == 0) health = 1;
         w.setHealth(health);
         w.setCustomName(title, player.getVersion());
-        w.setEntityFlags((byte) 32);
-        w.setWitherInvulnerableTime(880); // Magic number
+        w.setEntityFlags(INVISIBLE_FLAG);
+        w.setWitherInvulnerableTime(IDEAL_INVULNERABLE_TIME);
         player.getEntityView().spawnEntity(id.hashCode(), new UUID(0, 0), EntityType.WITHER, new Location(0, 0, 0), w);
     }
 
@@ -46,7 +55,7 @@ public class EntityBossBar implements BossBar {
     @Override
     public void update(@NotNull UUID id, float progress) {
         DataWatcher w = new DataWatcher();
-        float health = 300*progress;
+        float health = WITHER_MAX_HEALTH*progress;
         if (health == 0) health = 1;
         w.setHealth(health);
         player.getEntityView().updateEntityMetadata(id.hashCode(), w);

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

@@ -4,7 +4,7 @@ import com.viaversion.viaversion.api.Via;
 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.chat.TabComponent;
 import me.neznamy.tab.shared.platform.BossBar;
 import me.neznamy.tab.api.bossbar.BarColor;
 import me.neznamy.tab.api.bossbar.BarStyle;
@@ -36,7 +36,7 @@ public class ViaBossBar implements BossBar {
     public void create(@NotNull UUID id, @NotNull String title, float progress, @NotNull BarColor color, @NotNull BarStyle style) {
         if (viaBossBars.containsKey(id)) return;
         com.viaversion.viaversion.api.legacy.bossbar.BossBar bar = Via.getAPI().legacyAPI().createLegacyBossBar(
-                IChatBaseComponent.optimizedComponent(title).toString(player.getVersion()),
+                TabComponent.optimized(title).toLegacyText(),
                 progress,
                 BossColor.valueOf(color.name()),
                 styles[style.ordinal()]
@@ -47,7 +47,7 @@ public class ViaBossBar implements BossBar {
 
     @Override
     public void update(@NotNull UUID id, @NotNull String title) {
-        viaBossBars.get(id).setTitle(IChatBaseComponent.optimizedComponent(title).toString(player.getVersion()));
+        viaBossBars.get(id).setTitle(TabComponent.optimized(title).toLegacyText());
     }
 
     @Override

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

@@ -0,0 +1,273 @@
+package me.neznamy.tab.platforms.bukkit.entity;
+
+import lombok.*;
+import me.neznamy.tab.platforms.bukkit.nms.ComponentConverter;
+import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
+import me.neznamy.tab.shared.Limitations;
+import me.neznamy.tab.shared.ProtocolVersion;
+import me.neznamy.tab.shared.backend.EntityData;
+import me.neznamy.tab.shared.chat.TabComponent;
+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.Method;
+import java.util.*;
+
+/**
+ * A class representing the n.m.s.DataWatcher class to make work with it much easier
+ */
+@ToString
+public class DataWatcher implements EntityData {
+
+    private static Object DataWatcherSerializer_BYTE;
+    private static Object DataWatcherSerializer_FLOAT;
+    private static Object DataWatcherSerializer_STRING;
+    private static Object DataWatcherSerializer_OPTIONAL_COMPONENT;
+    private static Object DataWatcherSerializer_BOOLEAN;
+
+    private static final int armorStandFlagsPosition = EntityData.getArmorStandFlagsPosition(BukkitReflection.getMinorVersion());
+
+    /** 1.19.3+ */
+    private static Constructor<?> newDataWatcher$Item;
+
+    /** 1.19.2- */
+    public static Class<?> DataWatcher;
+    private static Constructor<?> newDataWatcher;
+    private static Method DataWatcher_register;
+    private static Constructor<?> newDataWatcherObject;
+
+    /** Watched data */
+    private final Map<Integer, Item> dataValues = new HashMap<>();
+
+    /**
+     * Loads all required Fields and throws Exception if something went wrong.
+     *
+     * @throws  ReflectiveOperationException
+     *          If something goes wrong
+     */
+    public static void load() throws ReflectiveOperationException {
+        int minorVersion = BukkitReflection.getMinorVersion();
+        if (minorVersion >= 9) {
+            loadSerializers();
+        }
+        if (BukkitReflection.is1_19_3Plus()) {
+            Class<?> dataWatcher$Item = BukkitReflection.getClass("network.syncher.SynchedEntityData$DataValue", "network.syncher.DataWatcher$c", "network.syncher.DataWatcher$b");
+            Class<?> dataWatcherSerializer = BukkitReflection.getClass("network.syncher.EntityDataSerializer",
+                    "network.syncher.DataWatcherSerializer", "DataWatcherSerializer");
+            newDataWatcher$Item = dataWatcher$Item.getConstructor(int.class, dataWatcherSerializer, Object.class);
+        } else {
+            DataWatcher = BukkitReflection.getClass("network.syncher.SynchedEntityData", "network.syncher.DataWatcher", "DataWatcher");
+            if (minorVersion >= 7) {
+                ComponentConverter.ensureAvailable();
+                newDataWatcher = DataWatcher.getConstructor(BukkitReflection.getClass("world.entity.Entity", "Entity"));
+            } else {
+                newDataWatcher = DataWatcher.getConstructor();
+            }
+            if (minorVersion >= 9) {
+                Class<?> dataWatcherObject = BukkitReflection.getClass("network.syncher.EntityDataAccessor",
+                        "network.syncher.DataWatcherObject", "DataWatcherObject");
+                Class<?> dataWatcherSerializer = BukkitReflection.getClass("network.syncher.EntityDataSerializer",
+                        "network.syncher.DataWatcherSerializer", "DataWatcherSerializer");
+                DataWatcher_register = ReflectionUtils.getMethod(
+                        DataWatcher,
+                        new String[]{"define", "register", "a", "m_135372_"}, // {Mojang, Bukkit, Bukkit 1.18+, Mohist 1.18.2}
+                        dataWatcherObject, Object.class
+                );
+                newDataWatcherObject = dataWatcherObject.getConstructor(int.class, dataWatcherSerializer);
+            } else {
+                DataWatcher_register = ReflectionUtils.getMethod(
+                        DataWatcher,
+                        new String[]{"func_75682_a", "a"}, int.class, // {Thermos 1.7.10, Bukkit}
+                        Object.class
+                );
+            }
+        }
+    }
+
+    private static void loadSerializers() throws ReflectiveOperationException {
+        Class<?> dataWatcherRegistry = BukkitReflection.getClass("network.syncher.EntityDataSerializers",
+                "network.syncher.DataWatcherRegistry", "DataWatcherRegistry");
+        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);
+            if (BukkitReflection.is1_19_4Plus()) {
+                DataWatcherSerializer_BOOLEAN = ReflectionUtils.getField(dataWatcherRegistry, "BOOLEAN", "k").get(null);
+            } else {
+                DataWatcherSerializer_BOOLEAN = ReflectionUtils.getField(dataWatcherRegistry, "BOOLEAN", "j").get(null);
+            }
+        } else {
+            if (BukkitReflection.getMinorVersion() >= 13) {
+                DataWatcherSerializer_OPTIONAL_COMPONENT = ReflectionUtils.getField(dataWatcherRegistry,
+                        "OPTIONAL_COMPONENT", "f", "f_135032_").get(null); // Mohist 1.18.2
+                DataWatcherSerializer_BOOLEAN = ReflectionUtils.getField(dataWatcherRegistry,
+                        "BOOLEAN", "i", "f_135035_").get(null); // Mohist 1.18.2
+            } else {
+                DataWatcherSerializer_BOOLEAN = dataWatcherRegistry.getDeclaredField("h").get(null);
+            }
+        }
+    }
+
+    /**
+     * Sets value into data values
+     *
+     * @param   position
+     *          data position
+     * @param   serializer
+     *          Object serializer (1.9+)
+     * @param   value
+     *          value
+     */
+    public void setValue(int position, @Nullable Object serializer, @NotNull Object value) {
+        dataValues.put(position, new Item(position, serializer, value));
+    }
+
+    /**
+     * Writes entity byte flags
+     *
+     * @param   flags
+     *          flags to write
+     */
+    public void setEntityFlags(byte flags) {
+        setValue(0, DataWatcherSerializer_BYTE, flags);
+    }
+
+    /**
+     * Writes entity custom name with position based on server version and value depending on client version (RGB or not)
+     *
+     * @param   customName
+     *          target custom name
+     * @param   clientVersion
+     *          client version
+     */
+    public void setCustomName(@NotNull String customName, @NotNull ProtocolVersion clientVersion) {
+        if (BukkitReflection.getMinorVersion() >= 13) {
+            setValue(2, DataWatcherSerializer_OPTIONAL_COMPONENT, Optional.of(TabComponent.optimized(customName).convert(clientVersion)));
+        } else if (BukkitReflection.getMinorVersion() >= 8) {
+            setValue(2, DataWatcherSerializer_STRING, customName);
+        } else {
+            //name length is limited to 64 characters on <1.8
+            String cutName = (customName.length() > Limitations.BOSSBAR_NAME_LENGTH_1_7 ?
+                    customName.substring(0, Limitations.BOSSBAR_NAME_LENGTH_1_7) : customName);
+            if (BukkitReflection.getMinorVersion() >= 6) {
+                setValue(10, null, cutName);
+            } else {
+                setValue(5, null, cutName);
+            }
+        }
+    }
+
+    /**
+     * Writes custom name visibility boolean
+     *
+     * @param   visible
+     *          if visible or not
+     */
+    public void setCustomNameVisible(boolean visible) {
+        if (BukkitReflection.getMinorVersion() >= 9) {
+            setValue(3, DataWatcherSerializer_BOOLEAN, visible);
+        } else {
+            setValue(3, null, (byte)(visible?1:0));
+        }
+    }
+
+    /**
+     * Writes entity health
+     *
+     * @param   health
+     *          health of entity
+     */
+    public void setHealth(float health) {
+        if (BukkitReflection.getMinorVersion() >= 6) {
+            setValue(6, DataWatcherSerializer_FLOAT, health);
+        } else {
+            setValue(16, null, (int)health);
+        }
+    }
+
+    /**
+     * Writes armor stand flags
+     *
+     * @param   flags
+     *          flags to write
+     */
+    public void setArmorStandFlags(byte flags) {
+        setValue(armorStandFlagsPosition, DataWatcherSerializer_BYTE, flags);
+    }
+
+    /**
+     * Writes wither invulnerable time
+     * @param   time
+     *          Time, apparently
+     */
+    public void setWitherInvulnerableTime(int time) {
+        if (BukkitReflection.getMinorVersion() > 8)
+            throw new UnsupportedOperationException("Not supported on 1.9+");
+        setValue(20, null, time);
+    }
+
+    /**
+     * Converts the class into an instance of NMS.DataWatcher
+     *
+     * @return  an instance of NMS.DataWatcher with same data
+     */
+    @SneakyThrows
+    @NotNull
+    public Object build() {
+        if (BukkitReflection.is1_19_3Plus()) {
+            List<Object> items = new ArrayList<>();
+            for (Item item : dataValues.values()) {
+                items.add(newDataWatcher$Item.newInstance(item.position, item.serializer, item.value));
+            }
+            return items;
+        } else {
+            Object nmsWatcher;
+            if (newDataWatcher.getParameterCount() == 1) { //1.7+
+                nmsWatcher = newDataWatcher.newInstance(new Object[] {null});
+            } else {
+                nmsWatcher = newDataWatcher.newInstance();
+            }
+            for (Item item : dataValues.values()) {
+                Object nmsObject = item.createObject();
+                DataWatcher_register.invoke(nmsWatcher, nmsObject, item.getValue());
+            }
+            return nmsWatcher;
+        }
+    }
+
+    /**
+     * Class for specific data watcher item.
+     */
+    @RequiredArgsConstructor
+    @Getter
+    private static class Item {
+
+        /** Item position */
+        private final int position;
+
+        /** Item serializer (1.9+) */
+        @Nullable
+        private final Object serializer;
+
+        /** Item value */
+        @NonNull
+        private final Object value;
+
+        /**
+         * Creates data watcher object with position and serializer
+         *
+         * @return  NMS data watcher object
+         */
+        @SneakyThrows
+        public Object createObject() {
+            if (BukkitReflection.getMinorVersion() >= 9) {
+                return newDataWatcherObject.newInstance(position, serializer);
+            } else {
+                return position;
+            }
+        }
+    }
+}

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

@@ -0,0 +1,432 @@
+package me.neznamy.tab.platforms.bukkit.entity;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+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;
+import me.neznamy.tab.platforms.bukkit.nms.PacketSender;
+import me.neznamy.tab.shared.backend.EntityData;
+import me.neznamy.tab.shared.backend.Location;
+import me.neznamy.tab.shared.backend.entityview.EntityView;
+import me.neznamy.tab.shared.util.*;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.EntityType;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.*;
+import java.util.concurrent.Callable;
+import java.util.function.Function;
+
+/**
+ * EntityView implementation for Bukkit using packets.
+ */
+@RequiredArgsConstructor
+@SuppressWarnings("unchecked")
+public class PacketEntityView implements EntityView {
+
+    /** Version with entity metadata being split from spawn packet */
+    private static final int SPLIT_METADATA_VERSION = 15;
+
+    private static PacketSender packetSender;
+
+    /** PacketPlayOutEntityDestroy */
+    private static Class<?> EntityDestroyClass;
+    private static BiConsumerWithException<BukkitTabPlayer, int[]> destroyEntities;
+    private static FunctionWithException<Object, int[]> getDestroyedEntities;
+
+    /** PacketPlayOutEntityMetadata */
+    private static BiFunctionWithException<Integer, EntityData, Object> newEntityMetadata;
+    
+    /** PacketPlayOutEntityTeleport */
+    private static BiFunctionWithException<Integer, Location, Object> newEntityTeleport;
+    private static Class<?> EntityTeleportClass;
+    private static Field EntityTeleport_EntityId;
+
+    /** PacketPlayOutSpawnEntityLiving */
+    private static QuintFunction<Integer, UUID, Object, Location, EntityData, Object> newSpawnEntity;
+
+    /** Other entity packets */
+    private static Class<?> PacketPlayOutEntity;
+    private static Field PacketPlayOutEntity_ENTITYID;
+    private static Field PacketPlayOutEntity_X;
+    private static Field PacketPlayOutEntity_Y;
+    private static Field PacketPlayOutEntity_Z;
+    private static Class<?> PacketPlayOutEntityLook;
+    private static QuadFunction<Integer, Long, Long, Long, Object> newMovePacket;
+    private static Class<?> PacketPlayOutNamedEntitySpawn;
+    private static Field PacketPlayOutNamedEntitySpawn_ENTITYID;
+
+    private static Constructor<?> newClientboundBundlePacket;
+    private static Field ClientboundBundlePacket_packets;
+    private static Function<Object, Boolean> isBundlePacket = packet -> false;
+    private static BiConsumerWithException<BukkitTabPlayer, Iterable<?>> sendAsBundle = (player, packets) -> {
+        for (Object packet : packets) {
+            packetSender.sendPacket(player.getPlayer(), packet);
+        }
+    };
+
+    @Getter
+    private static boolean available;
+
+    /** Player this view belongs to */
+    private final BukkitTabPlayer player;
+
+    /**
+     * Loads all required classes and fields and marks class as available.
+     * If something goes wrong, a warning is printed and class is not marked as available.
+     */
+    public static void tryLoad() {
+        try {
+            DataWatcher.load();
+            loadEntityMetadata();
+            loadEntityDestroy();
+            loadEntityTeleport();
+            loadEntityMove();
+            loadEntitySpawn();
+            if (BukkitReflection.is1_19_4Plus()) {
+                Class<?> ClientboundBundlePacket = Class.forName("net.minecraft.network.protocol.game.ClientboundBundlePacket");
+                newClientboundBundlePacket = ClientboundBundlePacket.getConstructor(Iterable.class);
+                ClientboundBundlePacket_packets = ReflectionUtils.getOnlyField(ClientboundBundlePacket.getSuperclass(), Iterable.class);
+                isBundlePacket = ClientboundBundlePacket::isInstance;
+                sendAsBundle = (player, packets) -> packetSender.sendPacket(player.getPlayer(), newClientboundBundlePacket.newInstance(packets));
+            }
+            packetSender = new PacketSender();
+            available = true;
+        } catch (Exception e) {
+            List<String> missingFeatures = new ArrayList<>();
+            if (BukkitReflection.getMinorVersion() >= 8) {
+                missingFeatures.add("Unlimited nametag mode not working and being replaced with regular nametags");
+            }
+            if (BukkitReflection.getMinorVersion() <= 8) {
+                missingFeatures.add("BossBar feature not working");
+            }
+            BukkitUtils.compatibilityError(e, "sending entity packets", null, missingFeatures.toArray(new String[0]));
+        }
+    }
+
+    @SuppressWarnings("JavaReflectionInvocation")
+    private static void loadEntityMetadata() throws ReflectiveOperationException {
+        Class<?> entityMetadataClass = BukkitReflection.getClass("network.protocol.game.ClientboundSetEntityDataPacket",
+                "network.protocol.game.PacketPlayOutEntityMetadata", "PacketPlayOutEntityMetadata", "Packet40EntityMetadata");
+        if (BukkitReflection.is1_19_3Plus()) {
+            Constructor<?> constructor = entityMetadataClass.getConstructor(int.class, List.class);
+            newEntityMetadata = (entityId, data) -> constructor.newInstance(entityId, data.build());
+        } else {
+            Constructor<?> constructor = entityMetadataClass.getConstructor(int.class, DataWatcher.DataWatcher, boolean.class);
+            newEntityMetadata = (entityId, data) -> constructor.newInstance(entityId, data.build(), true);
+        }
+    }
+
+    private static void loadEntityDestroy() throws ReflectiveOperationException {
+        EntityDestroyClass = BukkitReflection.getClass("network.protocol.game.ClientboundRemoveEntitiesPacket",
+                "network.protocol.game.PacketPlayOutEntityDestroy", "PacketPlayOutEntityDestroy", "Packet29DestroyEntity");
+        Field entities = ReflectionUtils.getOnlyField(EntityDestroyClass);
+        try {
+            Constructor<?> constructor = EntityDestroyClass.getConstructor(int[].class);
+            destroyEntities = (player, ids) -> packetSender.sendPacket(player.getPlayer(), constructor.newInstance(new Object[]{ids}));
+            if (BukkitReflection.getMinorVersion() >= 17) {
+                getDestroyedEntities = packet -> ((List<Integer>) entities.get(packet)).stream().mapToInt(i -> i).toArray();
+            } else {
+                getDestroyedEntities = packet -> (int[]) entities.get(packet);
+            }
+        } catch (NoSuchMethodException e) {
+            //1.17.0 Mojank
+            Constructor<?> constructor = EntityDestroyClass.getConstructor(int.class);
+            destroyEntities = (player, ids) -> { for (int entity : ids) packetSender.sendPacket(player.getPlayer(), constructor.newInstance(entity));};
+            getDestroyedEntities = packet -> new int[]{entities.getInt(packet)};
+        }
+    }
+
+    private static void loadEntityTeleport() throws ReflectiveOperationException {
+        EntityTeleportClass = BukkitReflection.getClass("network.protocol.game.ClientboundTeleportEntityPacket",
+                "network.protocol.game.PacketPlayOutEntityTeleport", "PacketPlayOutEntityTeleport", "Packet34EntityTeleport");
+        Callable<Object> newPacket;
+        if (BukkitReflection.getMinorVersion() >= 17) {
+            // Dummy armor stand for constructor
+            Class<?> world = BukkitReflection.getClass("world.level.Level", "world.level.World", "World");
+            Class<?> entityArmorStand = BukkitReflection.getClass("world.entity.decoration.ArmorStand",
+                    "world.entity.decoration.EntityArmorStand", "EntityArmorStand");
+            Constructor<?> newEntityArmorStand = entityArmorStand.getConstructor(world, double.class, double.class, double.class);
+            Method World_getHandle = BukkitReflection.getBukkitClass("CraftWorld").getMethod("getHandle");
+            Object dummyEntity = newEntityArmorStand.newInstance(World_getHandle.invoke(Bukkit.getWorlds().get(0)), 0, 0, 0);
+
+            Constructor<?> constructor = EntityTeleportClass.getConstructor(BukkitReflection.getClass("world.entity.Entity"));
+            newPacket = () -> constructor.newInstance(dummyEntity);
+        } else {
+            Constructor<?> constructor = EntityTeleportClass.getConstructor();
+            newPacket = constructor::newInstance;
+        }
+
+        EntityTeleport_EntityId = ReflectionUtils.getFields(EntityTeleportClass, int.class).get(0);
+        Field EntityTeleport_X;
+        Field EntityTeleport_Y;
+        Field EntityTeleport_Z;
+        if (BukkitReflection.getMinorVersion() >= 9) {
+            EntityTeleport_X = ReflectionUtils.getFields(EntityTeleportClass, double.class).get(0);
+            EntityTeleport_Y = ReflectionUtils.getFields(EntityTeleportClass, double.class).get(1);
+            EntityTeleport_Z = ReflectionUtils.getFields(EntityTeleportClass, double.class).get(2);
+        } else {
+            EntityTeleport_X = ReflectionUtils.getFields(EntityTeleportClass, int.class).get(1);
+            EntityTeleport_Y = ReflectionUtils.getFields(EntityTeleportClass, int.class).get(2);
+            EntityTeleport_Z = ReflectionUtils.getFields(EntityTeleportClass, int.class).get(3);
+        }
+        newEntityTeleport = (entityId, location) -> {
+            Object packet = newPacket.call();
+            EntityTeleport_EntityId.set(packet, entityId);
+            EntityTeleport_X.set(packet, toPosition(location.getX()));
+            EntityTeleport_Y.set(packet, toPosition(location.getY()));
+            EntityTeleport_Z.set(packet, toPosition(location.getZ()));
+            return packet;
+        };
+    }
+
+    private static void loadEntityMove() throws ReflectiveOperationException {
+        // Classes
+        PacketPlayOutEntity = BukkitReflection.getClass("network.protocol.game.ClientboundMoveEntityPacket",
+                "network.protocol.game.PacketPlayOutEntity", "PacketPlayOutEntity", "Packet30Entity");
+        PacketPlayOutEntityLook = BukkitReflection.getClass("network.protocol.game.ClientboundMoveEntityPacket$Rot",
+                "network.protocol.game.PacketPlayOutEntity$PacketPlayOutEntityLook", "PacketPlayOutEntity$PacketPlayOutEntityLook",
+                "PacketPlayOutEntityLook", "Packet32EntityLook");
+        Class<?> packetPlayOutRelEntityMove = BukkitReflection.getClass("network.protocol.game.ClientboundMoveEntityPacket$Pos",
+                "network.protocol.game.PacketPlayOutEntity$PacketPlayOutRelEntityMove", "PacketPlayOutEntity$PacketPlayOutRelEntityMove",
+                "PacketPlayOutRelEntityMove", "Packet31RelEntityMove");
+
+
+        // Fields
+        PacketPlayOutEntity_ENTITYID = ReflectionUtils.getFields(PacketPlayOutEntity, int.class).get(0);
+
+        if (BukkitReflection.getMinorVersion() >= 14) {
+            List<Field> fields = ReflectionUtils.getFields(PacketPlayOutEntity, short.class);
+            PacketPlayOutEntity_X = fields.get(0);
+            PacketPlayOutEntity_Y = fields.get(1);
+            PacketPlayOutEntity_Z = fields.get(2);
+            Constructor<?> constructor = packetPlayOutRelEntityMove.getConstructor(int.class, short.class, short.class, short.class, boolean.class);
+            newMovePacket = (entityId, x, y, z) -> constructor.newInstance(entityId, x.shortValue(), y.shortValue(), z.shortValue(), false);
+        } else if (BukkitReflection.getMinorVersion() >= 9) {
+            List<Field> fields = ReflectionUtils.getFields(PacketPlayOutEntity, int.class);
+            PacketPlayOutEntity_X = fields.get(1);
+            PacketPlayOutEntity_Y = fields.get(2);
+            PacketPlayOutEntity_Z = fields.get(3);
+            Constructor<?> constructor = packetPlayOutRelEntityMove.getConstructor(int.class, long.class, long.class, long.class, boolean.class);
+            newMovePacket = (entityId, x, y, z) -> constructor.newInstance(entityId, x, y, z, false);
+        } else if (BukkitReflection.getMinorVersion() == 8) {
+            List<Field> fields = ReflectionUtils.getFields(PacketPlayOutEntity, byte.class);
+            PacketPlayOutEntity_X = fields.get(0);
+            PacketPlayOutEntity_Y = fields.get(1);
+            PacketPlayOutEntity_Z = fields.get(2);
+            Constructor<?> constructor = packetPlayOutRelEntityMove.getConstructor(int.class, byte.class, byte.class, byte.class, boolean.class);
+            newMovePacket = (entityId, x, y, z) -> constructor.newInstance(entityId, x.byteValue(), y.byteValue(), z.byteValue(), false);
+        }
+    }
+
+    /**
+     * Loads required NMS classes, fields and methods. If it fails, exception is thrown.
+     *
+     * @throws  ReflectiveOperationException
+     *          If anything fails
+     */
+    private static void loadEntitySpawn() throws ReflectiveOperationException {
+        int minorVersion = BukkitReflection.getMinorVersion();
+
+        // Entity ids
+        EnumMap<EntityType, Integer> entityIds = new EnumMap<>(EntityType.class);
+        if (minorVersion >= 13) {
+            entityIds.put(EntityType.ARMOR_STAND, 1);
+        } else {
+            entityIds.put(EntityType.WITHER, 64);
+            if (minorVersion >= 8) {
+                entityIds.put(EntityType.ARMOR_STAND, 30);
+            }
+        }
+
+        Class<?> SpawnEntityClass = BukkitReflection.getClass("network.protocol.game.ClientboundAddEntityPacket",
+                "network.protocol.game.PacketPlayOutSpawnEntity", "PacketPlayOutSpawnEntityLiving", "Packet24MobSpawn");
+        Field SpawnEntity_EntityId = ReflectionUtils.getFields(SpawnEntityClass, int.class).get(0);
+        if (BukkitReflection.is1_20_2Plus()) {
+            PacketPlayOutNamedEntitySpawn = SpawnEntityClass;
+            PacketPlayOutNamedEntitySpawn_ENTITYID = SpawnEntity_EntityId;
+        } else {
+            PacketPlayOutNamedEntitySpawn = BukkitReflection.getClass("network.protocol.game.ClientboundAddPlayerPacket",
+                    "network.protocol.game.PacketPlayOutNamedEntitySpawn", "PacketPlayOutNamedEntitySpawn", "Packet20NamedEntitySpawn");
+            PacketPlayOutNamedEntitySpawn_ENTITYID = ReflectionUtils.getFields(PacketPlayOutNamedEntitySpawn, int.class).get(0);
+        }
+        Constructor<?> constructor;
+
+        // 1.17+ constructor using Spawn entity packet
+        if (minorVersion >= 17) {
+            Class<?> Vec3D = BukkitReflection.getClass("world.phys.Vec3", "world.phys.Vec3D");
+            Object Vec3D_Empty = ReflectionUtils.getOnlyField(Vec3D, Vec3D).get(null);
+            Class<?> EntityTypes = BukkitReflection.getClass("world.entity.EntityType", "world.entity.EntityTypes");
+            if (minorVersion >= 19) {
+                Object EntityTypes_ARMOR_STAND = ReflectionUtils.getField(EntityTypes, "ARMOR_STAND", "d").get(null);
+                constructor = SpawnEntityClass.getConstructor(int.class, UUID.class, double.class, double.class, double.class, float.class, float.class, EntityTypes, int.class, Vec3D, double.class);
+                newSpawnEntity = (id, uuid, type, l, data) -> constructor.newInstance(id, uuid, l.getX(), l.getY(), l.getZ(), 0, 0, EntityTypes_ARMOR_STAND, 0, Vec3D_Empty, 0.0d);
+            } else {
+                Object EntityTypes_ARMOR_STAND = ReflectionUtils.getField(EntityTypes, "ARMOR_STAND", "c", "f_20529_").get(null); // Mohist 1.18.2
+                constructor = SpawnEntityClass.getConstructor(int.class, UUID.class, double.class, double.class, double.class, float.class, float.class, EntityTypes, int.class, Vec3D);
+                newSpawnEntity = (id, uuid, type, l, data) -> constructor.newInstance(id, uuid, l.getX(), l.getY(), l.getZ(), 0, 0, EntityTypes_ARMOR_STAND, 0, Vec3D_Empty);
+            }
+            return;
+        }
+
+        // 1.16- constructor using spawn entity living packet
+        constructor = SpawnEntityClass.getConstructor();
+        @Nullable Field SpawnEntity_UUID;
+        Field SpawnEntity_X;
+        Field SpawnEntity_Y;
+        Field SpawnEntity_Z;
+        @Nullable Field SpawnEntity_DataWatcher;
+        Field SpawnEntity_EntityType = ReflectionUtils.getFields(SpawnEntityClass, int.class).get(1);
+        if (minorVersion >= 9) {
+            SpawnEntity_UUID = ReflectionUtils.getOnlyField(SpawnEntityClass, UUID.class);
+            SpawnEntity_X = ReflectionUtils.getFields(SpawnEntityClass, double.class).get(0);
+            SpawnEntity_Y = ReflectionUtils.getFields(SpawnEntityClass, double.class).get(1);
+            SpawnEntity_Z = ReflectionUtils.getFields(SpawnEntityClass, double.class).get(2);
+        } else {
+            SpawnEntity_UUID = null;
+            SpawnEntity_X = ReflectionUtils.getFields(SpawnEntityClass, int.class).get(2);
+            SpawnEntity_Y = ReflectionUtils.getFields(SpawnEntityClass, int.class).get(3);
+            SpawnEntity_Z = ReflectionUtils.getFields(SpawnEntityClass, int.class).get(4);
+        }
+        if (minorVersion < SPLIT_METADATA_VERSION) {
+            SpawnEntity_DataWatcher = ReflectionUtils.getOnlyField(SpawnEntityClass, DataWatcher.DataWatcher);
+        } else {
+            SpawnEntity_DataWatcher = null;
+        }
+        newSpawnEntity = (id, uuid, type, l, data) -> {
+            Object nmsPacket = constructor.newInstance();
+            SpawnEntity_EntityId.set(nmsPacket, id);
+            if (minorVersion < SPLIT_METADATA_VERSION) SpawnEntity_DataWatcher.set(nmsPacket, data.build());
+            if (minorVersion >= 9) SpawnEntity_UUID.set(nmsPacket, uuid);
+            SpawnEntity_X.set(nmsPacket, toPosition(l.getX()));
+            SpawnEntity_Y.set(nmsPacket, toPosition(l.getY()));
+            SpawnEntity_Z.set(nmsPacket, toPosition(l.getZ()));
+            SpawnEntity_EntityType.set(nmsPacket, entityIds.get((EntityType) type));
+            return nmsPacket;
+        };
+    }
+
+    private static Object toPosition(double paramDouble) {
+        if (BukkitReflection.getMinorVersion() >= 9) {
+            return paramDouble;
+        } else {
+            int i = (int) (paramDouble*32);
+            return paramDouble < i ? i - 1 : i;
+        }
+    }
+
+    @SneakyThrows
+    @Override
+    public void spawnEntity(int entityId, @NotNull UUID id, @NotNull Object entityType, @NotNull Location l, @NotNull EntityData data) {
+        if (BukkitReflection.getMinorVersion() >= SPLIT_METADATA_VERSION) {
+            sendAsBundle.accept(player, Arrays.asList(
+                    newSpawnEntity.apply(entityId, id, entityType, l, null),
+                    newEntityMetadata.apply(entityId, data)
+            ));
+        } else {
+            packetSender.sendPacket(player.getPlayer(), newSpawnEntity.apply(entityId, id, entityType, l, data));
+        }
+    }
+
+    @Override
+    @SneakyThrows
+    public void updateEntityMetadata(int entityId, @NotNull EntityData data) {
+        packetSender.sendPacket(player.getPlayer(), newEntityMetadata.apply(entityId, data));
+    }
+
+    @SneakyThrows
+    @Override
+    public void teleportEntity(int entityId, @NotNull Location location) {
+        packetSender.sendPacket(player.getPlayer(), newEntityTeleport.apply(entityId, location));
+    }
+
+    @SneakyThrows
+    @Override
+    public void destroyEntities(int... entities) {
+        destroyEntities.accept(player, entities);
+    }
+
+    @Override
+    public boolean isDestroyPacket(@NotNull Object packet) {
+        return EntityDestroyClass.isInstance(packet);
+    }
+
+    @Override
+    public boolean isTeleportPacket(@NotNull Object packet) {
+        return EntityTeleportClass.isInstance(packet);
+    }
+
+    @Override
+    public boolean isNamedEntitySpawnPacket(@NotNull Object packet) {
+        return PacketPlayOutNamedEntitySpawn.isInstance(packet);
+    }
+
+    @Override
+    public boolean isMovePacket(@NotNull Object packet) {
+        return PacketPlayOutEntity.isInstance(packet);
+    }
+
+    @Override
+    public boolean isLookPacket(@NotNull Object packet) {
+        return PacketPlayOutEntityLook.isInstance(packet);
+    }
+
+    @Override
+    @SneakyThrows
+    public int getTeleportEntityId(@NotNull Object teleportPacket) {
+        return EntityTeleport_EntityId.getInt(teleportPacket);
+    }
+
+    @Override
+    @SneakyThrows
+    public int getMoveEntityId(@NotNull Object movePacket) {
+        return PacketPlayOutEntity_ENTITYID.getInt(movePacket);
+    }
+
+    @Override
+    @SneakyThrows
+    public int getSpawnedPlayer(@NotNull Object playerSpawnPacket) {
+        return PacketPlayOutNamedEntitySpawn_ENTITYID.getInt(playerSpawnPacket);
+    }
+
+    @Override
+    @SneakyThrows
+    public int[] getDestroyedEntities(@NotNull Object destroyPacket) {
+        return getDestroyedEntities.apply(destroyPacket);
+    }
+
+    @Override
+    public boolean isBundlePacket(@NotNull Object packet) {
+        return isBundlePacket.apply(packet);
+    }
+
+    @Override
+    @SneakyThrows
+    public Iterable<Object> getPackets(@NotNull Object bundlePacket) {
+        return (Iterable<Object>) ClientboundBundlePacket_packets.get(bundlePacket);
+    }
+
+    @Override
+    @SneakyThrows
+    @NotNull
+    public Location getMoveDiff(@NotNull Object movePacket) {
+        return new Location(
+                ((Number)PacketPlayOutEntity_X.get(movePacket)).intValue(),
+                ((Number)PacketPlayOutEntity_Y.get(movePacket)).intValue(),
+                ((Number)PacketPlayOutEntity_Z.get(movePacket)).intValue()
+        );
+    }
+
+    @Override
+    @SneakyThrows
+    public void moveEntity(int entityId, @NotNull Location moveDiff) {
+        packetSender.sendPacket(player.getPlayer(), newMovePacket.apply(
+                entityId, (long) moveDiff.getX(), (long) moveDiff.getY(), (long) moveDiff.getZ()));
+    }
+}

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

@@ -2,7 +2,7 @@ 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.entity.DataWatcher;
 import me.neznamy.tab.platforms.bukkit.platform.BukkitPlatform;
 import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.backend.EntityData;
@@ -26,6 +26,7 @@ import org.jetbrains.annotations.Nullable;
 
 import java.util.Collections;
 import java.util.List;
+import java.util.Locale;
 import java.util.stream.Collectors;
 
 /**
@@ -33,15 +34,36 @@ import java.util.stream.Collectors;
  */
 public class BukkitNameTagX extends BackendNameTagX implements Listener {
 
+    /** Version in which multiple passenger option was added */
+    private static final int MULTI_PASSENGER_VERSION = 11;
+
+    /**
+     * Constructs new instance and registers the class listener.
+     *
+     * @param   plugin
+     *          Plugin instance to use for registering listener
+     */
     public BukkitNameTagX(@NotNull JavaPlugin plugin) {
         Bukkit.getPluginManager().registerEvents(this, plugin);
     }
 
+    /**
+     * Listener to player sneak event to sneak armor stands.
+     *
+     * @param   e
+     *          Sneak event
+     */
     @EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
     public void onSneak(PlayerToggleSneakEvent e) {
         sneak(e.getPlayer().getUniqueId(), e.isSneaking());
     }
 
+    /**
+     * Listener to respawn event to resend armor stands.
+     *
+     * @param   e
+     *          Respawn event
+     */
     @EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
     public void onRespawn(PlayerRespawnEvent e) {
         respawn(e.getPlayer().getUniqueId());
@@ -74,7 +96,7 @@ public class BukkitNameTagX extends BackendNameTagX implements Listener {
     @NotNull
     public List<Integer> getPassengers(@NotNull Object entity) {
         Entity vehicle = (Entity) entity;
-        if (BukkitReflection.getMinorVersion() >= 11) {
+        if (BukkitReflection.getMinorVersion() >= MULTI_PASSENGER_VERSION) {
             return vehicle.getPassengers().stream().map(Entity::getEntityId).collect(Collectors.toList());
         } else {
             if (vehicle.getPassenger() != null) {
@@ -99,7 +121,7 @@ public class BukkitNameTagX extends BackendNameTagX implements Listener {
     @Override
     @NotNull
     public String getEntityType(@NotNull Object entity) {
-        return ((Entity) entity).getType().toString().toLowerCase();
+        return ((Entity) entity).getType().toString().toLowerCase(Locale.US);
     }
 
     @Override
@@ -152,7 +174,7 @@ public class BukkitNameTagX extends BackendNameTagX implements Listener {
         datawatcher.setEntityFlags(flags);
         datawatcher.setCustomName(displayName, viewer.getVersion());
         datawatcher.setCustomNameVisible(nameVisible);
-        datawatcher.setArmorStandFlags((byte)16);
+        datawatcher.setArmorStandFlags(datawatcher.MARKER_FLAG);
         return datawatcher;
     }
 
@@ -165,4 +187,9 @@ public class BukkitNameTagX extends BackendNameTagX implements Listener {
     public boolean isDead(@NotNull TabPlayer player) {
         return ((BukkitTabPlayer)player).getPlayer().isDead();
     }
+
+    @Override
+    public boolean isFlying(@NotNull TabPlayer player) {
+        return ((BukkitTabPlayer)player).getPlayer().isFlying();
+    }
 }

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

@@ -12,11 +12,7 @@ import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.WeakHashMap;
+import java.util.*;
 
 /**
  * TAB's expansion for PlaceholderAPI
@@ -24,13 +20,9 @@ import java.util.WeakHashMap;
 @Getter
 public class BukkitTabExpansion extends PlaceholderExpansion implements TabExpansion {
 
-    /** Map holding all values for all players for easy and high-performance access */
-    @NotNull
-    private final WeakHashMap<TabPlayer, Map<String, String>> values = new WeakHashMap<>();
-
     /** List of all placeholders offered by the plugin for command suggestions */
     @NotNull
-    private final List<String> placeholders = Arrays.asList(
+    private final List<String> placeholders = Collections.unmodifiableList(Arrays.asList(
             "%tab_tabprefix%",
             "%tab_tabsuffix%",
             "%tab_tagprefix%",
@@ -54,7 +46,7 @@ public class BukkitTabExpansion extends PlaceholderExpansion implements TabExpan
             "%tab_nametag_visibility%",
             "%tab_replace_<placeholder>%",
             "%tab_placeholder_<placeholder>%"
-    );
+    ));
 
     @Override
     public boolean persist() {
@@ -101,17 +93,17 @@ public class BukkitTabExpansion extends PlaceholderExpansion implements TabExpan
             return text;
         }
         if (identifier.startsWith("placeholder_")) {
-            TAB.getInstance().getPlaceholderManager().addUsedPlaceholder("%" + identifier.substring(12) + "%", TAB.getInstance().getPlaceholderManager());
+            TAB.getInstance().getPlaceholderManager().addUsedPlaceholder("%" + identifier.substring("placeholder_".length()) + "%", TAB.getInstance().getPlaceholderManager());
         }
         if (player == null) return "<Player cannot be null>";
         TabPlayer p = TAB.getInstance().getPlayer(player.getUniqueId());
         if (p == null || !p.isLoaded()) return "<Player is not loaded>";
-        return values.get(p).get(identifier);
+        return p.expansionValues.values.get(identifier);
     }
 
     @Override
     public void setValue(@NotNull TabPlayer player, @NotNull String key, @NotNull String value) {
-        values.computeIfAbsent(player, p -> new HashMap<>()).put(key, value);
+        player.expansionValues.values.put(key, value);
     }
 
     @Override

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

@@ -5,7 +5,6 @@ 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;
@@ -29,12 +28,10 @@ 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"));
-    private final Map<String, List<String>> sharedWorlds = TAB.getInstance().getConfig().getConfigurationSection("per-world-playerlist.shared-playerlist-world-groups");
+    private final boolean allowBypass = config().getBoolean("per-world-playerlist.allow-bypass-permission", false);
+    private final List<String> ignoredWorlds = config().getStringList("per-world-playerlist.ignore-effect-in-worlds", Arrays.asList("ignored_world", "build"));
+    private final Map<String, List<String>> sharedWorlds = config().getConfigurationSection("per-world-playerlist.shared-playerlist-world-groups");
 
     /**
      * Constructs new instance and registers events
@@ -63,18 +60,30 @@ public class PerWorldPlayerList extends TabFeature implements Listener, Loadable
         HandlerList.unregisterAll(this);
     }
 
+    /**
+     * Join event listener to synchronously perform hiding.
+     *
+     * @param   e
+     *          Join event
+     */
     @EventHandler
     public void onJoin(PlayerJoinEvent e) {
         long time = System.nanoTime();
         checkPlayer(e.getPlayer());
-        TAB.getInstance().getCPUManager().addTime(this, TabConstants.CpuUsageCategory.PLAYER_JOIN, System.nanoTime()-time);
+        TAB.getInstance().getCPUManager().addTime(getFeatureName(), TabConstants.CpuUsageCategory.PLAYER_JOIN, System.nanoTime()-time);
     }
 
+    /**
+     * World change listener to synchronously perform player showing/hiding.
+     *
+     * @param   e
+     *          World change event
+     */
     @EventHandler
     public void onWorldChange(PlayerChangedWorldEvent e) {
         long time = System.nanoTime();
         checkPlayer(e.getPlayer());
-        TAB.getInstance().getCPUManager().addTime(this, TabConstants.CpuUsageCategory.WORLD_SWITCH, System.nanoTime()-time);
+        TAB.getInstance().getCPUManager().addTime(getFeatureName(), TabConstants.CpuUsageCategory.WORLD_SWITCH, System.nanoTime()-time);
     }
 
     /**
@@ -116,4 +125,10 @@ 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/features/WitherBossBar.java

@@ -24,6 +24,9 @@ import org.jetbrains.annotations.NotNull;
 @RequiredArgsConstructor
 public class WitherBossBar extends BossBarManagerImpl implements Listener, WorldSwitchListener {
 
+    /** Distance of the wither in blocks */
+    private static final int WITHER_DISTANCE = 60;
+
     /**
      * Constructs new instance and registers events
      *
@@ -39,7 +42,7 @@ public class WitherBossBar extends BossBarManagerImpl implements Listener, World
         //when MC is on fullscreen, BossBar disappears after 1 second of not being seen
         //when in a small window, it's about 100ms
         TAB.getInstance().getCPUManager().startRepeatingMeasuredTask(100,
-                featureName, TabConstants.CpuUsageCategory.TELEPORTING_WITHER, this::teleport);
+                getFeatureName(), TabConstants.CpuUsageCategory.TELEPORTING_WITHER, this::teleport);
         super.load();
         teleport();
     }
@@ -51,9 +54,9 @@ public class WitherBossBar extends BossBarManagerImpl implements Listener, World
         for (TabPlayer p : TAB.getInstance().getOnlinePlayers()) {
             if (p.getVersion().getMinorVersion() > 8) continue; //sending VV packets to those
             for (BossBar line : getRegisteredBossBars().values()) {
-                if (!line.getPlayers().contains(p)) continue;
+                if (!line.containsPlayer(p)) continue;
                 Location eyeLocation = ((BukkitTabPlayer)p).getPlayer().getEyeLocation();
-                Location loc = eyeLocation.add(eyeLocation.getDirection().normalize().multiply(60)); // Wither distance
+                Location loc = eyeLocation.add(eyeLocation.getDirection().normalize().multiply(WITHER_DISTANCE));
                 if (loc.getY() < 1) loc.setY(1);
                 ((BackendTabPlayer)p).getEntityView().teleportEntity(line.getUniqueId().hashCode(), new me.neznamy.tab.shared.backend.Location(loc.getX(), loc.getY(), loc.getZ()));
             }
@@ -67,13 +70,16 @@ public class WitherBossBar extends BossBarManagerImpl implements Listener, World
     }
     
     /**
-     * Respawning wither as respawn screen destroys all entities in client
+     * Respawning wither as respawn screen destroys all entities in client.
+     *
+     * @param   e
+     *          Respawn event
      */
     @EventHandler
     public void onRespawn(PlayerRespawnEvent e) {
         TabPlayer player = TAB.getInstance().getPlayer(e.getPlayer().getUniqueId());
         if (player == null) return;
-        TAB.getInstance().getCPUManager().runMeasuredTask(featureName, TabConstants.CpuUsageCategory.PLAYER_RESPAWN,
+        TAB.getInstance().getCPUManager().runMeasuredTask(getFeatureName(), TabConstants.CpuUsageCategory.PLAYER_RESPAWN,
                 () -> detectBossBarsAndSend(player));
     }
 

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

@@ -1,33 +0,0 @@
-package me.neznamy.tab.platforms.bukkit.header;
-
-import lombok.Getter;
-import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
-import me.neznamy.tab.platforms.bukkit.BukkitUtils;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
-import me.neznamy.tab.shared.util.ReflectionUtils;
-import org.bukkit.entity.Player;
-import org.jetbrains.annotations.NotNull;
-
-/**
- * Header/footer sender using Bukkit API. Despite this feature getting
- * added into the game in 1.8, Bukkit team took 4 entire years to add
- * it to the API, which eventually made it there in 1.13. <p>
- * The input is just a String, meaning Bukkit will have to deserialize it
- * into components, which is a massive performance loss. It also does not
- * seem to support fonts.
- */
-public class BukkitHeaderFooter extends HeaderFooter {
-
-    /** Flag tracking whether this class can be used on current server */
-    @Getter
-    private static final boolean available = ReflectionUtils.methodExists(Player.class, "setPlayerListHeaderFooter", String.class, String.class);
-
-    @Override
-    @SuppressWarnings("deprecation") // Marked as deprecated by Paper to make us use their methods instead
-    public void set(@NotNull BukkitTabPlayer player, @NotNull IChatBaseComponent header, @NotNull IChatBaseComponent footer) {
-        player.getPlayer().setPlayerListHeaderFooter(
-                BukkitUtils.toBukkitFormat(header, player.getVersion().getMinorVersion() >= 16),
-                BukkitUtils.toBukkitFormat(footer, player.getVersion().getMinorVersion() >= 16)
-        );
-    }
-}

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

@@ -1,55 +0,0 @@
-package me.neznamy.tab.platforms.bukkit.header;
-
-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.chat.IChatBaseComponent;
-import org.bukkit.Bukkit;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-/**
- * A class responsible for sending header/footer to players on request.
- */
-public abstract class HeaderFooter {
-
-    /** Instance of the class, null if no implementation is available */
-    @Getter
-    @Nullable
-    private static HeaderFooter instance;
-
-    /**
-     * Finds the best available instance for current server software.
-     */
-    public static void findInstance() {
-        if (PaperHeaderFooter.isAvailable()) {
-            instance = new PaperHeaderFooter();
-        } else if (PacketHeaderFooter.isAvailable() && PacketSender.isAvailable()) {
-            instance = new PacketHeaderFooter();
-        } else if (BukkitHeaderFooter.isAvailable()) {
-            instance = new BukkitHeaderFooter();
-            Bukkit.getConsoleSender().sendMessage(EnumChatFormat.RED.getFormat() + "[TAB] Failed to initialize NMS fields for " +
-                    "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 {
-            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. " +
-                    "Please update the plugin to version with proper support for your server version.");
-        }
-    }
-
-    /**
-     * Sends header/footer to player.
-     *
-     * @param   player
-     *          Player to send header/footer to.
-     * @param   header
-     *          Header to use.
-     * @param   footer
-     *          Footer to use.
-     */
-    public abstract void set(@NotNull BukkitTabPlayer player, @NotNull IChatBaseComponent header, @NotNull IChatBaseComponent footer);
-}

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

@@ -1,73 +0,0 @@
-package me.neznamy.tab.platforms.bukkit.header;
-
-import lombok.Getter;
-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
- * on all versions since 1.8 when the feature was added into the game.
- */
-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;
-
-    static {
-        try {
-            if (BukkitReflection.getMinorVersion() >= 8) {
-                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 {
-                    newHeaderFooter = HeaderFooterClass.getConstructor();
-                    HEADER = ReflectionUtils.getFields(HeaderFooterClass, IChatBaseComponent).get(0);
-                    FOOTER = ReflectionUtils.getFields(HeaderFooterClass, IChatBaseComponent).get(1);
-                }
-                available = true;
-            }
-        } catch (Exception ignored) {
-            // Print exception to find out what went wrong
-        }
-    }
-
-    @SneakyThrows
-    @Override
-    public void set(@NotNull BukkitTabPlayer player, @NotNull IChatBaseComponent header, @NotNull IChatBaseComponent footer) {
-        if (BukkitReflection.getMinorVersion() >= 17) {
-            player.sendPacket(newHeaderFooter.newInstance(convert(header, player), convert(footer, player)));
-        } else {
-            Object packet = newHeaderFooter.newInstance();
-            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

@@ -1,32 +0,0 @@
-package me.neznamy.tab.platforms.bukkit.header;
-
-import lombok.Getter;
-import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
-import me.neznamy.tab.shared.hook.AdventureHook;
-import me.neznamy.tab.shared.util.ReflectionUtils;
-import net.kyori.adventure.text.Component;
-import org.bukkit.entity.Player;
-import org.jetbrains.annotations.NotNull;
-
-/**
- * Header/footer sender using Paper's API added in 1.16.5.
- * 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 {
-
-    /** Flag tracking whether this class can be used on current server */
-    @Getter
-    private static final boolean available = ReflectionUtils.classExists("net.kyori.adventure.text.Component") &&
-            ReflectionUtils.methodExists(Player.class, "sendPlayerListHeaderAndFooter", Component.class, Component.class);
-
-    @Override
-    public void set(@NotNull BukkitTabPlayer player, @NotNull IChatBaseComponent header, @NotNull IChatBaseComponent footer) {
-        player.getPlayer().sendPlayerListHeaderAndFooter(
-                AdventureHook.toAdventureComponent(header, player.getVersion()),
-                AdventureHook.toAdventureComponent(footer, player.getVersion())
-        );
-    }
-}

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/hook/BukkitPremiumVanishHook.java

@@ -0,0 +1,23 @@
+package me.neznamy.tab.platforms.bukkit.hook;
+
+import de.myzelyam.api.vanish.VanishAPI;
+import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
+import me.neznamy.tab.shared.hook.PremiumVanishHook;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * PremiumVanish hook for Bukkit.
+ */
+public class BukkitPremiumVanishHook extends PremiumVanishHook {
+
+    @Override
+    public boolean canSee(@NotNull TabPlayer viewer, @NotNull TabPlayer target) {
+        return VanishAPI.canSee(((BukkitTabPlayer)viewer).getPlayer(), ((BukkitTabPlayer)target).getPlayer());
+    }
+
+    @Override
+    public boolean isVanished(@NotNull TabPlayer player) {
+        return VanishAPI.isInvisible(((BukkitTabPlayer)player).getPlayer());
+    }
+}

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

@@ -1,21 +1,25 @@
 package me.neznamy.tab.platforms.bukkit.nms;
 
 import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import lombok.SneakyThrows;
+import me.neznamy.tab.shared.util.FunctionWithException;
 import me.neznamy.tab.shared.util.ReflectionUtils;
 import org.bukkit.Bukkit;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.Arrays;
 
+/**
+ * Class containing main NMS-related information and methods.
+ */
 public class BukkitReflection {
 
-    /** Server's NMS/CraftBukkit package */
-    @Getter
-    private static final String serverPackage = Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3];
+    /** CraftBukkit package */
+    private static final String CRAFTBUKKIT_PACKAGE = Bukkit.getServer().getClass().getPackage().getName();
 
-    /** Server's minor version */
-    @Getter
-    private static final int minorVersion = Integer.parseInt(serverPackage.split("_")[1]);
+    /** Server version data */
+    private static final ServerVersion serverVersion = detectServerVersion();
 
     /** Flag determining whether the server version is at least 1.19.3 or not */
     @Getter
@@ -23,7 +27,7 @@ public class BukkitReflection {
 
     /** Flag determining whether the server version is at least 1.19.4 or not */
     @Getter
-    private static final boolean is1_19_4Plus = is1_19_3Plus && !serverPackage.equals("v1_19_R2");
+    private static final boolean is1_19_4Plus = ReflectionUtils.classExists("net.minecraft.network.protocol.game.ClientboundBundlePacket");
 
     /** Flag determining whether the server version is at least 1.20.2 or not */
     @Getter
@@ -33,6 +37,34 @@ public class BukkitReflection {
     @Getter
     private static final boolean is1_20_3Plus = ReflectionUtils.classExists("net.minecraft.network.protocol.game.ClientboundResetScorePacket");
 
+    private static ServerVersion detectServerVersion() {
+        FunctionWithException<String, Class<?>> classFunction = name -> Class.forName("net.minecraft." + name);
+        String[] array = Bukkit.getServer().getClass().getPackage().getName().split("\\.");
+        int minorVersion;
+        if (array.length > 3) {
+            // Normal packaging
+            String serverPackage = array[3];
+            minorVersion = Integer.parseInt(serverPackage.split("_")[1]);
+            if (minorVersion < 17) {
+                ClassLoader loader = BukkitReflection.class.getClassLoader();
+                classFunction = name -> loader.loadClass("net.minecraft.server." + serverPackage + "." + name);
+            }
+        } else {
+            // Paper without CB relocation
+            minorVersion = Integer.parseInt(Bukkit.getBukkitVersion().split("-")[0].split("\\.")[1]);
+        }
+        return new ServerVersion(classFunction, minorVersion);
+    }
+
+    /**
+     * Returns server's minor version, such as 20 for 1.20.4
+     *
+     * @return  server's minor version
+     */
+    public static int getMinorVersion() {
+        return serverVersion.getMinorVersion();
+    }
+
     /**
      * 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.
@@ -43,19 +75,39 @@ public class BukkitReflection {
      * @throws  ClassNotFoundException
      *          if class does not exist
      */
+    @SneakyThrows
     public static Class<?> getClass(@NotNull String... names) throws ClassNotFoundException {
-        ClassLoader loader = BukkitReflection.class.getClassLoader();
         for (String name : names) {
             try {
-                if (minorVersion >= 17) {
-                    return Class.forName("net.minecraft." + name);
-                } else {
-                    return loader.loadClass("net.minecraft.server." + serverPackage + "." + name);
-                }
+                return serverVersion.getClass.apply(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 CraftBukkit class with given package and name.
+     *
+     * @param   name
+     *          Package and name of the class
+     * @return  CraftBukkit class
+     * @throws  ClassNotFoundException
+     *          If class does not exist
+     */
+    public static Class<?> getBukkitClass(@NotNull String name) throws ClassNotFoundException {
+        return Class.forName(CRAFTBUKKIT_PACKAGE + "." + name);
+    }
+
+    /**
+     * Class with server version information.
+     */
+    @RequiredArgsConstructor
+    @Getter
+    private static class ServerVersion {
+
+        private final FunctionWithException<String, Class<?>> getClass;
+        private final int minorVersion;
+    }
 }

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

@@ -0,0 +1,161 @@
+package me.neznamy.tab.platforms.bukkit.nms;
+
+import lombok.SneakyThrows;
+import me.neznamy.tab.shared.chat.ChatModifier;
+import me.neznamy.tab.shared.chat.SimpleComponent;
+import me.neznamy.tab.shared.chat.StructuredComponent;
+import me.neznamy.tab.shared.chat.TabComponent;
+import me.neznamy.tab.shared.util.FunctionWithException;
+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;
+import java.lang.reflect.Method;
+import java.util.List;
+import java.util.function.BiFunction;
+
+/**
+ * Class for converting TAB component into NMS components (1.7+).
+ */
+@SuppressWarnings({"rawtypes", "unchecked"})
+public class ComponentConverter {
+
+    /** Instance of the class */
+    @Nullable
+    public static ComponentConverter INSTANCE;
+
+    private final FunctionWithException<String, Object> newTextComponent;
+    private final BiFunction<ChatModifier, Boolean, Object> convertModifier;
+
+    private final Class<?> ChatModifier = BukkitReflection.getClass("network.chat.ChatModifier", "ChatModifier");
+    private final Class<Enum> EnumChatFormat = (Class<Enum>) BukkitReflection.getClass("EnumChatFormat");
+    private final Constructor<?> newChatModifier;
+    private final Method ChatBaseComponent_addSibling;
+    private final Field Component_modifier;
+    private final List<Field> magicCodes = ReflectionUtils.getFields(ChatModifier, Boolean.class);
+
+    // 1.15-
+    private Method ChatModifier_setColor;
+
+    // 1.16+
+    private Method ChatHexColor_fromRGB;
+    private Method ResourceLocation_tryParse;
+
+    /**
+     * Constructs new instance and loads all NMS classes, constructors and methods.
+     *
+     * @throws  ReflectiveOperationException
+     *          If something failed
+     */
+    private ComponentConverter() throws ReflectiveOperationException {
+        Class<?> IChatBaseComponent = BukkitReflection.getClass("network.chat.IChatBaseComponent", "IChatBaseComponent");
+        if (BukkitReflection.getMinorVersion() >= 19) {
+            Method IChatBaseComponent_b = ReflectionUtils.getMethod(IChatBaseComponent, new String[] {"b", "literal"}, String.class);
+            newTextComponent = text -> IChatBaseComponent_b.invoke(null, text);
+            Class<?> IChatMutableComponent = BukkitReflection.getClass("network.chat.IChatMutableComponent", "IChatMutableComponent");
+            Component_modifier = ReflectionUtils.getOnlyField(IChatMutableComponent, ChatModifier);
+            ChatBaseComponent_addSibling = ReflectionUtils.getOnlyMethod(IChatMutableComponent, IChatMutableComponent, IChatBaseComponent);
+        } else {
+            Class<?> ChatComponentText = BukkitReflection.getClass("network.chat.ChatComponentText", "ChatComponentText");
+            Constructor<?> newChatComponentText = ChatComponentText.getConstructor(String.class);
+            newTextComponent = newChatComponentText::newInstance;
+            Class<?> ChatBaseComponent = BukkitReflection.getClass("network.chat.ChatBaseComponent", "ChatBaseComponent");
+            Component_modifier = ReflectionUtils.getOnlyField(ChatBaseComponent, ChatModifier);
+            ChatBaseComponent_addSibling = ReflectionUtils.getOnlyMethod(ChatComponentText, IChatBaseComponent, IChatBaseComponent);
+        }
+        if (BukkitReflection.getMinorVersion() >= 16) {
+            Class<?> chatHexColor = BukkitReflection.getClass("network.chat.ChatHexColor", "ChatHexColor");
+            Class<?> ResourceLocation = BukkitReflection.getClass("resources.MinecraftKey", "MinecraftKey");
+            Class<?> chatClickable = BukkitReflection.getClass("network.chat.ChatClickable", "ChatClickable");
+            Class<?> chatHoverable = BukkitReflection.getClass("network.chat.ChatHoverable", "ChatHoverable");
+            ResourceLocation_tryParse = ReflectionUtils.getMethod(ResourceLocation, new String[]{"tryParse", "m_135820_", "a"}, String.class);
+            ChatHexColor_fromRGB = ReflectionUtils.getOnlyMethod(chatHexColor, chatHexColor, int.class);
+            newChatModifier = ReflectionUtils.setAccessible(ChatModifier.getDeclaredConstructor(chatHexColor, Boolean.class, Boolean.class, Boolean.class,
+                    Boolean.class, Boolean.class, chatClickable, chatHoverable, String.class, ResourceLocation));
+            convertModifier = this::createModifierModern;
+        } else {
+            newChatModifier = ChatModifier.getConstructor();
+            ChatModifier_setColor = ReflectionUtils.getOnlyMethod(ChatModifier, ChatModifier, EnumChatFormat);
+            convertModifier = (modifier, protocolVersion) -> createModifierLegacy(modifier);
+        }
+    }
+
+    /**
+     * Converts TAB component to NMS component.
+     *
+     * @param   component
+     *          Component to convert
+     * @param   modern
+     *          Whether client supports RGB or not
+     * @return  Converted component
+     */
+    @SneakyThrows
+    public Object convert(@NotNull TabComponent component, boolean modern) {
+        if (component instanceof SimpleComponent) return newTextComponent.apply(((SimpleComponent) component).getText());
+
+        StructuredComponent component1 = (StructuredComponent) component;
+        Object nmsComponent = newTextComponent.apply(component1.getText());
+        Component_modifier.set(nmsComponent, convertModifier.apply(component1.getModifier(), modern));
+        for (StructuredComponent extra : component1.getExtra()) {
+            ChatBaseComponent_addSibling.invoke(nmsComponent, convert(extra, modern));
+        }
+        return nmsComponent;
+    }
+
+    @SneakyThrows
+    private Object createModifierModern(@NotNull ChatModifier modifier, boolean modern) {
+        Object color = null;
+        if (modifier.getColor() != null) {
+            if (modern) {
+                color = ChatHexColor_fromRGB.invoke(null, modifier.getColor().getRgb());
+            } else {
+                color = ChatHexColor_fromRGB.invoke(null, modifier.getColor().getLegacyColor().getRgb());
+            }
+        }
+        return newChatModifier.newInstance(
+                color,
+                modifier.isBold(),
+                modifier.isItalic(),
+                modifier.isUnderlined(),
+                modifier.isStrikethrough(),
+                modifier.isObfuscated(),
+                null,
+                null,
+                null,
+                modifier.getFont() == null ? null : ResourceLocation_tryParse.invoke(null, modifier.getFont())
+        );
+    }
+
+    @SneakyThrows
+    private Object createModifierLegacy(@NotNull ChatModifier modifier) {
+        Object nmsModifier = newChatModifier.newInstance();
+        if (modifier.getColor() != null) {
+            ChatModifier_setColor.invoke(nmsModifier, Enum.valueOf(EnumChatFormat, modifier.getColor().getLegacyColor().name()));
+        }
+        if (modifier.isBold()) magicCodes.get(0).set(nmsModifier, true);
+        if (modifier.isItalic()) magicCodes.get(1).set(nmsModifier, true);
+        if (modifier.isStrikethrough()) magicCodes.get(2).set(nmsModifier, true);
+        if (modifier.isUnderlined()) magicCodes.get(3).set(nmsModifier, true);
+        if (modifier.isObfuscated()) magicCodes.get(4).set(nmsModifier, true);
+        return nmsModifier;
+    }
+
+    /**
+     * Attempts to load component converter.
+     */
+    public static void tryLoad() {
+        try {
+            INSTANCE = new ComponentConverter();
+        } catch (Exception ignored) {
+        }
+    }
+
+    /**
+     * Makes sure the component converter is available and throws an exception if not.
+     */
+    public static void ensureAvailable() {
+        if (INSTANCE == null) throw new IllegalStateException("Component converter is not available");
+    }
+}

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

@@ -1,283 +0,0 @@
-package me.neznamy.tab.platforms.bukkit.nms;
-
-import lombok.*;
-import me.neznamy.tab.shared.ProtocolVersion;
-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;
-
-import java.lang.reflect.Constructor;
-import java.lang.reflect.Method;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Optional;
-
-/**
- * A class representing the n.m.s.DataWatcher class to make work with it much easier
- */
-@ToString
-public class DataWatcher implements EntityData {
-
-    /** NMS Fields */
-    public static Class<?> DataWatcher;
-    private static Constructor<?> newDataWatcher;
-    private static Method DataWatcher_register;
-    private static Method DataWatcher_markDirty;
-    public static Method DataWatcher_packDirty;
-
-    private static Class<?> DataWatcherObject;
-    private static Constructor<?> newDataWatcherObject;
-
-    private static Object DataWatcherSerializer_BYTE;
-    private static Object DataWatcherSerializer_FLOAT;
-    private static Object DataWatcherSerializer_STRING;
-    private static Object DataWatcherSerializer_OPTIONAL_COMPONENT;
-    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<>();
-
-    /**
-     * Returns armor stand flags position based on server version
-     *
-     * @return  armor stand flags position based on server version
-     */
-    private static int getArmorStandFlagsPosition() {
-        if (BukkitReflection.getMinorVersion() >= 17) {
-            //1.17.x, 1.18.x, 1.19.x, 1.20.x
-            return 15;
-        } else if (BukkitReflection.getMinorVersion() >= 15) {
-            //1.15.x, 1.16.x
-            return 14;
-        } else if (BukkitReflection.getMinorVersion() == 14) {
-            //1.14.x
-            return 13;
-        } else if (BukkitReflection.getMinorVersion() >= 10) {
-            //1.10.x - 1.13.x
-            return 11;
-        } else {
-            //1.8.x - 1.9.x
-            return 10;
-        }
-    }
-    
-    /**
-     * Loads all required Fields and throws Exception if something went wrong
-     */
-    public static void load() throws ReflectiveOperationException {
-        int minorVersion = BukkitReflection.getMinorVersion();
-        DataWatcher = BukkitReflection.getClass("network.syncher.SynchedEntityData", "network.syncher.DataWatcher", "DataWatcher");
-        if (minorVersion >= 7) {
-            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_"}, // {Mojang, Bukkit, Bukkit 1.18+, Mohist 1.18.2}
-                    DataWatcherObject, Object.class
-            );
-            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);
-                if (BukkitReflection.is1_19_4Plus()) {
-                    DataWatcherSerializer_BOOLEAN = ReflectionUtils.getField(dataWatcherRegistry, "BOOLEAN", "k").get(null);
-                } else {
-                    DataWatcherSerializer_BOOLEAN = ReflectionUtils.getField(dataWatcherRegistry, "BOOLEAN", "j").get(null);
-                }
-            } else {
-                if (minorVersion >= 13) {
-                    DataWatcherSerializer_OPTIONAL_COMPONENT = ReflectionUtils.getField(dataWatcherRegistry,
-                            "OPTIONAL_COMPONENT", "f", "f_135032_").get(null); // Mohist 1.18.2
-                    DataWatcherSerializer_BOOLEAN = ReflectionUtils.getField(dataWatcherRegistry,
-                            "BOOLEAN", "i", "f_135035_").get(null); // Mohist 1.18.2
-                } else {
-                    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);
-        }
-    }
-    
-    /**
-     * Sets value into data values
-     *
-     * @param   position
-     *          data position
-     * @param   serializer
-     *          Object serializer (1.9+)
-     * @param   value
-     *          value
-     */
-    public void setValue(int position, @Nullable Object serializer, @NotNull Object value) {
-        dataValues.put(position, new Item(position, serializer, value));
-    }
-
-    /**
-     * Writes entity byte flags
-     *
-     * @param   flags
-     *          flags to write
-     */
-    public void setEntityFlags(byte flags) {
-        setValue(0, DataWatcherSerializer_BYTE, flags);
-    }
-
-    /**
-     * Writes entity custom name with position based on server version and value depending on client version (RGB or not)
-     *
-     * @param   customName
-     *          target custom name
-     * @param   clientVersion
-     *          client version
-     */
-    public void setCustomName(@NotNull String customName, @NotNull ProtocolVersion clientVersion) {
-        if (BukkitReflection.getMinorVersion() >= 13) {
-            setValue(2, DataWatcherSerializer_OPTIONAL_COMPONENT,
-                    Optional.of(componentCache.get(IChatBaseComponent.optimizedComponent(customName), clientVersion)));
-        } else if (BukkitReflection.getMinorVersion() >= 8) {
-            setValue(2, DataWatcherSerializer_STRING, customName);
-        } else {
-            //name length is limited to 64 characters on <1.8
-            String cutName = (customName.length() > 64 ? customName.substring(0, 64) : customName);
-            if (BukkitReflection.getMinorVersion() >= 6) {
-                setValue(10, null, cutName);
-            } else {
-                setValue(5, null, cutName);
-            }
-        }
-    }
-
-    /**
-     * Writes custom name visibility boolean
-     *
-     * @param   visible
-     *          if visible or not
-     */
-    public void setCustomNameVisible(boolean visible) {
-        if (BukkitReflection.getMinorVersion() >= 9) {
-            setValue(3, DataWatcherSerializer_BOOLEAN, visible);
-        } else {
-            setValue(3, null, (byte)(visible?1:0));
-        }
-    }
-
-    /**
-     * Writes entity health
-     *
-     * @param   health
-     *          health of entity
-     */
-    public void setHealth(float health) {
-        if (BukkitReflection.getMinorVersion() >= 6) {
-            setValue(6, DataWatcherSerializer_FLOAT, health);
-        } else {
-            setValue(16, null, (int)health);
-        }
-    }
-
-    /**
-     * Writes armor stand flags
-     *
-     * @param   flags
-     *          flags to write
-     */
-    public void setArmorStandFlags(byte flags) {
-        setValue(armorStandFlagsPosition, DataWatcherSerializer_BYTE, flags);
-    }
-
-    /**
-     * Writes wither invulnerable time
-     * @param   time
-     *          Time, apparently
-     */
-    public void setWitherInvulnerableTime(int time) {
-        if (BukkitReflection.getMinorVersion() > 8)
-            throw new UnsupportedOperationException("Not supported on 1.9+");
-        setValue(20, null, time);
-    }
-
-    /**
-     * Converts the class into an instance of NMS.DataWatcher
-     *
-     * @return  an instance of NMS.DataWatcher with same data
-     */
-    @SneakyThrows
-    public @NotNull Object build() {
-        Object nmsWatcher;
-        if (newDataWatcher.getParameterCount() == 1) { //1.7+
-            nmsWatcher = newDataWatcher.newInstance(new Object[] {null});
-        } else {
-            nmsWatcher = newDataWatcher.newInstance();
-        }
-        for (Item item : dataValues.values()) {
-            Object nmsObject = item.createObject();
-            DataWatcher_register.invoke(nmsWatcher, nmsObject, item.getValue());
-            if (BukkitReflection.is1_19_3Plus()) DataWatcher_markDirty.invoke(nmsWatcher, nmsObject);
-        }
-        return nmsWatcher;
-    }
-
-    @RequiredArgsConstructor
-    @Getter
-    public static class Item {
-
-        /** Item position */
-        private final int position;
-
-        /** Item serializer (1.9+) */
-        @Nullable
-        private final Object serializer;
-
-        /** Item value */
-        @NotNull
-        private final Object value;
-
-        /**
-         * Creates data watcher object with position and serializer
-         *
-         * @return  NMS data watcher object
-         */
-        @SneakyThrows
-        public Object createObject() {
-            if (BukkitReflection.getMinorVersion() >= 9) {
-                return newDataWatcherObject.newInstance(position, serializer);
-            } else {
-                return position;
-            }
-        }
-    }
-}

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

@@ -1,409 +0,0 @@
-package me.neznamy.tab.platforms.bukkit.nms;
-
-import lombok.Getter;
-import lombok.RequiredArgsConstructor;
-import lombok.SneakyThrows;
-import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
-import me.neznamy.tab.shared.backend.EntityData;
-import me.neznamy.tab.shared.backend.Location;
-import me.neznamy.tab.shared.backend.entityview.EntityView;
-import me.neznamy.tab.shared.util.ReflectionUtils;
-import org.bukkit.Bukkit;
-import org.bukkit.entity.EntityType;
-import org.jetbrains.annotations.NotNull;
-
-import java.lang.reflect.Constructor;
-import java.lang.reflect.Field;
-import java.lang.reflect.Method;
-import java.util.Arrays;
-import java.util.EnumMap;
-import java.util.List;
-import java.util.UUID;
-
-@RequiredArgsConstructor
-@SuppressWarnings("unchecked")
-public class PacketEntityView implements EntityView {
-
-    /** PacketPlayOutEntityDestroy */
-    private static Class<?> EntityDestroyClass;
-    private static Constructor<?> newEntityDestroy;
-    private static Field EntityDestroy_Entities;
-
-    /** PacketPlayOutEntityMetadata */
-    private static Constructor<?> newEntityMetadata;
-    
-    /** PacketPlayOutEntityTeleport */
-    private static Class<?> EntityTeleportClass;
-    private static Constructor<?> newEntityTeleport;
-    private static Field EntityTeleport_EntityId;
-    private static Field EntityTeleport_X;
-    private static Field EntityTeleport_Y;
-    private static Field EntityTeleport_Z;
-
-    /** PacketPlayOutSpawnEntityLiving */
-    private static Class<?> SpawnEntityClass;
-    private static Constructor<?> newSpawnEntity;
-
-    /** 1.17+ */
-    private static Object Vec3D_Empty;
-    private static Object EntityTypes_ARMOR_STAND;
-
-    /** 1.16.5- */
-    private static Field SpawnEntity_EntityId;
-    private static Field SpawnEntity_EntityType;
-    private static Field SpawnEntity_UUID;
-    private static Field SpawnEntity_X;
-    private static Field SpawnEntity_Y;
-    private static Field SpawnEntity_Z;
-    private static Field SpawnEntity_DataWatcher;
-    private static final EnumMap<EntityType, Integer> entityIds = new EnumMap<>(EntityType.class);
-
-    /** Other entity packets */
-    private static Class<?> PacketPlayOutEntity;
-    private static Field PacketPlayOutEntity_ENTITYID;
-    private static Class<?> PacketPlayOutEntityLook;
-    private static Class<?> PacketPlayOutNamedEntitySpawn;
-    private static Field PacketPlayOutNamedEntitySpawn_ENTITYID;
-
-    private static Class<?> ClientboundBundlePacket;
-    private static Field ClientboundBundlePacket_packets;
-
-    private static Object dummyEntity;
-
-    @Getter
-    private static boolean available;
-
-    /** Player this view belongs to */
-    private final BukkitTabPlayer player;
-
-    /**
-     * Loads all required classes and fields and throws Exception if something went wrong
-     *
-     * @throws  ReflectiveOperationException
-     *          If something fails
-     */
-    public static void load() throws ReflectiveOperationException {
-        loadEntityMetadata();
-        loadEntityDestroy();
-        loadEntityTeleport();
-        loadEntityMove();
-        loadEntitySpawn();
-        if (BukkitReflection.is1_19_4Plus()) {
-            ClientboundBundlePacket = Class.forName("net.minecraft.network.protocol.game.ClientboundBundlePacket");
-            ClientboundBundlePacket_packets = ReflectionUtils.getOnlyField(ClientboundBundlePacket.getSuperclass(), Iterable.class);
-        }
-        available = true;
-    }
-
-    private static void loadEntityMetadata() throws ReflectiveOperationException {
-        // Class
-        Class<?> entityMetadataClass = getClass("network.protocol.game.ClientboundSetEntityDataPacket",
-                "network.protocol.game.PacketPlayOutEntityMetadata", "PacketPlayOutEntityMetadata", "Packet40EntityMetadata");
-
-        // Constructor
-        if (BukkitReflection.is1_19_3Plus()) {
-            newEntityMetadata = entityMetadataClass.getConstructor(int.class, List.class);
-        } else {
-            newEntityMetadata = entityMetadataClass.getConstructor(int.class, DataWatcher.DataWatcher, boolean.class);
-        }
-    }
-
-    private static void loadEntityDestroy() throws ReflectiveOperationException {
-        // Class
-        EntityDestroyClass = getClass("network.protocol.game.ClientboundRemoveEntitiesPacket",
-                "network.protocol.game.PacketPlayOutEntityDestroy", "PacketPlayOutEntityDestroy", "Packet29DestroyEntity");
-
-        // Constructor
-        try {
-            newEntityDestroy = EntityDestroyClass.getConstructor(int[].class);
-        } catch (NoSuchMethodException e) {
-            //1.17.0
-            newEntityDestroy = EntityDestroyClass.getConstructor(int.class);
-        }
-
-        // Field
-        EntityDestroy_Entities = ReflectionUtils.getOnlyField(EntityDestroyClass);
-    }
-
-    private static void loadEntityTeleport() throws ReflectiveOperationException {
-        // Class
-        EntityTeleportClass = getClass("network.protocol.game.ClientboundTeleportEntityPacket",
-                "network.protocol.game.PacketPlayOutEntityTeleport", "PacketPlayOutEntityTeleport", "Packet34EntityTeleport");
-
-        // Constructor
-        if (BukkitReflection.getMinorVersion() >= 17) {
-            newEntityTeleport = EntityTeleportClass.getConstructor(getClass("world.entity.Entity"));
-        } else {
-            newEntityTeleport = EntityTeleportClass.getConstructor();
-        }
-
-        // Fields
-        EntityTeleport_EntityId = ReflectionUtils.getFields(EntityTeleportClass, int.class).get(0);
-        if (BukkitReflection.getMinorVersion() >= 9) {
-            EntityTeleport_X = ReflectionUtils.getFields(EntityTeleportClass, double.class).get(0);
-            EntityTeleport_Y = ReflectionUtils.getFields(EntityTeleportClass, double.class).get(1);
-            EntityTeleport_Z = ReflectionUtils.getFields(EntityTeleportClass, double.class).get(2);
-        } else {
-            EntityTeleport_X = ReflectionUtils.getFields(EntityTeleportClass, int.class).get(1);
-            EntityTeleport_Y = ReflectionUtils.getFields(EntityTeleportClass, int.class).get(2);
-            EntityTeleport_Z = ReflectionUtils.getFields(EntityTeleportClass, int.class).get(3);
-        }
-
-        // Dummy armor stand for constructor
-        if (BukkitReflection.getMinorVersion() >= 17) {
-            Class<?> world = getClass("world.level.Level", "world.level.World", "World");
-            Class<?> entityArmorStand = getClass("world.entity.decoration.ArmorStand",
-                    "world.entity.decoration.EntityArmorStand", "EntityArmorStand");
-            Constructor<?> newEntityArmorStand = entityArmorStand.getConstructor(world, double.class, double.class, double.class);
-            Method World_getHandle = Class.forName("org.bukkit.craftbukkit." + BukkitReflection.getServerPackage() + ".CraftWorld").getMethod("getHandle");
-            dummyEntity = newEntityArmorStand.newInstance(World_getHandle.invoke(Bukkit.getWorlds().get(0)), 0, 0, 0);
-        }
-    }
-
-    private static void loadEntityMove() throws ReflectiveOperationException {
-        // Classes
-        PacketPlayOutEntity = getClass("network.protocol.game.ClientboundMoveEntityPacket",
-                "network.protocol.game.PacketPlayOutEntity", "PacketPlayOutEntity", "Packet30Entity");
-        PacketPlayOutEntityLook = getClass("network.protocol.game.ClientboundMoveEntityPacket$Rot",
-                "network.protocol.game.PacketPlayOutEntity$PacketPlayOutEntityLook", "PacketPlayOutEntity$PacketPlayOutEntityLook",
-                "PacketPlayOutEntityLook", "Packet32EntityLook");
-
-        // Field
-        PacketPlayOutEntity_ENTITYID = ReflectionUtils.getFields(PacketPlayOutEntity, int.class).get(0);
-    }
-
-    private static void loadEntitySpawn() throws ReflectiveOperationException {
-        SpawnEntityClass = getClass("network.protocol.game.ClientboundAddEntityPacket",
-                "network.protocol.game.PacketPlayOutSpawnEntity", "PacketPlayOutSpawnEntityLiving", "Packet24MobSpawn");
-        SpawnEntity_EntityId = ReflectionUtils.getFields(SpawnEntityClass, int.class).get(0);
-        if (BukkitReflection.getMinorVersion() >= 17) {
-            Class<?> Vec3D = getClass("world.phys.Vec3", "world.phys.Vec3D");
-            Vec3D_Empty = ReflectionUtils.getOnlyField(Vec3D, Vec3D).get(null);
-            Class<?> EntityTypes = getClass("world.entity.EntityType", "world.entity.EntityTypes");
-            if (BukkitReflection.getMinorVersion() >= 19) {
-                EntityTypes_ARMOR_STAND = ReflectionUtils.getField(EntityTypes, "ARMOR_STAND", "d").get(null);
-            } else {
-                EntityTypes_ARMOR_STAND = ReflectionUtils.getField(EntityTypes, "ARMOR_STAND", "c", "f_20529_").get(null); // Mohist 1.18.2
-            }
-            if (BukkitReflection.getMinorVersion() >= 19) {
-                newSpawnEntity = SpawnEntityClass.getConstructor(int.class, UUID.class, double.class, double.class, double.class, float.class, float.class, EntityTypes, int.class, Vec3D, double.class);
-            } else {
-                newSpawnEntity = SpawnEntityClass.getConstructor(int.class, UUID.class, double.class, double.class, double.class, float.class, float.class, EntityTypes, int.class, Vec3D);
-            }
-        } else {
-            newSpawnEntity = SpawnEntityClass.getConstructor();
-            if (BukkitReflection.getMinorVersion() >= 9) {
-                SpawnEntity_UUID = ReflectionUtils.getOnlyField(SpawnEntityClass, UUID.class);
-                SpawnEntity_X = ReflectionUtils.getFields(SpawnEntityClass, double.class).get(0);
-                SpawnEntity_Y = ReflectionUtils.getFields(SpawnEntityClass, double.class).get(1);
-                SpawnEntity_Z = ReflectionUtils.getFields(SpawnEntityClass, double.class).get(2);
-            } else {
-                SpawnEntity_X = ReflectionUtils.getFields(SpawnEntityClass, int.class).get(2);
-                SpawnEntity_Y = ReflectionUtils.getFields(SpawnEntityClass, int.class).get(3);
-                SpawnEntity_Z = ReflectionUtils.getFields(SpawnEntityClass, int.class).get(4);
-            }
-            SpawnEntity_EntityType = ReflectionUtils.getFields(SpawnEntityClass, int.class).get(1);
-            if (BukkitReflection.getMinorVersion() <= 14) {
-                SpawnEntity_DataWatcher = ReflectionUtils.getOnlyField(SpawnEntityClass, DataWatcher.DataWatcher);
-            }
-        }
-        if (BukkitReflection.getMinorVersion() >= 13) {
-            entityIds.put(EntityType.ARMOR_STAND, 1);
-        } else {
-            entityIds.put(EntityType.WITHER, 64);
-            if (BukkitReflection.getMinorVersion() >= 8) {
-                entityIds.put(EntityType.ARMOR_STAND, 30);
-            }
-        }
-        if (!BukkitReflection.is1_20_2Plus()) {
-            PacketPlayOutNamedEntitySpawn = getClass("network.protocol.game.ClientboundAddPlayerPacket",
-                    "network.protocol.game.PacketPlayOutNamedEntitySpawn", "PacketPlayOutNamedEntitySpawn", "Packet20NamedEntitySpawn");
-            PacketPlayOutNamedEntitySpawn_ENTITYID = ReflectionUtils.getFields(PacketPlayOutNamedEntitySpawn, int.class).get(0);
-        }
-    }
-
-    private static int floor(double paramDouble) {
-        int i = (int)paramDouble;
-        return paramDouble < i ? i - 1 : i;
-    }
-
-    @SneakyThrows
-    @Override
-    public void spawnEntity(int entityId, @NotNull UUID id, @NotNull Object entityType, @NotNull Location l, @NotNull EntityData data) {
-        int minorVersion = BukkitReflection.getMinorVersion();
-        if (minorVersion >= 19) {
-            player.sendPacket(newSpawnEntity.newInstance(entityId, id, l.getX(), l.getY(), l.getZ(), 0, 0, EntityTypes_ARMOR_STAND, 0, Vec3D_Empty, 0d));
-        } else if (minorVersion >= 17) {
-            player.sendPacket(newSpawnEntity.newInstance(entityId, id, l.getX(), l.getY(), l.getZ(), 0, 0, EntityTypes_ARMOR_STAND, 0, Vec3D_Empty));
-        } else {
-            Object nmsPacket = newSpawnEntity.newInstance();
-            SpawnEntity_EntityId.set(nmsPacket, entityId);
-            if (minorVersion <= 14) {
-                SpawnEntity_DataWatcher.set(nmsPacket, data.build());
-            }
-            if (minorVersion >= 9) {
-                SpawnEntity_UUID.set(nmsPacket, id);
-                SpawnEntity_X.set(nmsPacket, l.getX());
-                SpawnEntity_Y.set(nmsPacket, l.getY());
-                SpawnEntity_Z.set(nmsPacket, l.getZ());
-            } else {
-                SpawnEntity_X.set(nmsPacket, floor(l.getX()*32));
-                SpawnEntity_Y.set(nmsPacket, floor(l.getY()*32));
-                SpawnEntity_Z.set(nmsPacket, floor(l.getZ()*32));
-            }
-            SpawnEntity_EntityType.set(nmsPacket, entityIds.get((EntityType) entityType));
-            player.sendPacket(nmsPacket);
-        }
-        if (BukkitReflection.getMinorVersion() >= 15) {
-            updateEntityMetadata(entityId, data);
-        }
-    }
-
-    @SneakyThrows
-    @Override
-    public void updateEntityMetadata(int entityId, @NotNull EntityData data) {
-        if (newEntityMetadata.getParameterCount() == 2) {
-            //1.19.3+
-            player.sendPacket(newEntityMetadata.newInstance(entityId, DataWatcher.DataWatcher_packDirty.invoke(data.build())));
-        } else {
-            player.sendPacket(newEntityMetadata.newInstance(entityId, data.build(), true));
-        }
-    }
-
-    @SneakyThrows
-    @Override
-    public void teleportEntity(int entityId, @NotNull Location location) {
-        Object nmsPacket;
-        if (BukkitReflection.getMinorVersion() >= 17) {
-            nmsPacket = newEntityTeleport.newInstance(dummyEntity);
-        } else {
-            nmsPacket = newEntityTeleport.newInstance();
-        }
-        EntityTeleport_EntityId.set(nmsPacket, entityId);
-        if (BukkitReflection.getMinorVersion() >= 9) {
-            EntityTeleport_X.set(nmsPacket, location.getX());
-            EntityTeleport_Y.set(nmsPacket, location.getY());
-            EntityTeleport_Z.set(nmsPacket, location.getZ());
-        } else {
-            EntityTeleport_X.set(nmsPacket, floor(location.getX()*32));
-            EntityTeleport_Y.set(nmsPacket, floor(location.getY()*32));
-            EntityTeleport_Z.set(nmsPacket, floor(location.getZ()*32));
-        }
-        player.sendPacket(nmsPacket);
-    }
-
-    @SneakyThrows
-    @Override
-    public void destroyEntities(int... entities) {
-        if (newEntityDestroy.getParameterTypes()[0] != int.class) {
-            player.sendPacket(newEntityDestroy.newInstance(new Object[]{entities}));
-        } else {
-            //1.17.0 Mojank
-            for (int entity : entities) {
-                player.sendPacket(newEntityDestroy.newInstance(entity));
-            }
-        }
-    }
-
-    @Override
-    public boolean isDestroyPacket(@NotNull Object packet) {
-        return EntityDestroyClass.isInstance(packet);
-    }
-
-    @Override
-    public boolean isTeleportPacket(@NotNull Object packet) {
-        return EntityTeleportClass.isInstance(packet);
-    }
-
-    @Override
-    public boolean isNamedEntitySpawnPacket(@NotNull Object packet) {
-        if (BukkitReflection.is1_20_2Plus()) {
-            return SpawnEntityClass.isInstance(packet);
-        } else {
-            return PacketPlayOutNamedEntitySpawn.isInstance(packet);
-        }
-    }
-
-    @Override
-    public boolean isMovePacket(@NotNull Object packet) {
-        return PacketPlayOutEntity.isInstance(packet);
-    }
-
-    @Override
-    public boolean isLookPacket(@NotNull Object packet) {
-        return PacketPlayOutEntityLook.isInstance(packet);
-    }
-
-    @Override
-    @SneakyThrows
-    public int getTeleportEntityId(@NotNull Object teleportPacket) {
-        return EntityTeleport_EntityId.getInt(teleportPacket);
-    }
-
-    @Override
-    @SneakyThrows
-    public int getMoveEntityId(@NotNull Object movePacket) {
-        return PacketPlayOutEntity_ENTITYID.getInt(movePacket);
-    }
-
-    @Override
-    @SneakyThrows
-    public int getSpawnedPlayer(@NotNull Object playerSpawnPacket) {
-        if (BukkitReflection.is1_20_2Plus()) {
-            return SpawnEntity_EntityId.getInt(playerSpawnPacket);
-        } else {
-            return PacketPlayOutNamedEntitySpawn_ENTITYID.getInt(playerSpawnPacket);
-        }
-    }
-
-    @Override
-    @SneakyThrows
-    public int[] getDestroyedEntities(@NotNull Object destroyPacket) {
-        Object entities = PacketEntityView.EntityDestroy_Entities.get(destroyPacket);
-        if (BukkitReflection.getMinorVersion() >= 17) {
-            if (entities instanceof List) {
-                return ((List<Integer>)entities).stream().mapToInt(i -> i).toArray();
-            } else {
-                //1.17.0
-                return new int[]{(int) entities};
-            }
-        } else {
-            return (int[]) entities;
-        }
-    }
-
-    @Override
-    public boolean isBundlePacket(@NotNull Object packet) {
-        return BukkitReflection.is1_19_4Plus() && ClientboundBundlePacket.isInstance(packet);
-    }
-
-    @Override
-    @SneakyThrows
-    public Iterable<Object> getPackets(@NotNull Object bundlePacket) {
-        return (Iterable<Object>) ClientboundBundlePacket_packets.get(bundlePacket);
-    }
-
-    /**
-     * Returns class from given potential names. Supports modded servers, such as Thermos.
-     *
-     * @param   names
-     *          Potential class names
-     * @return  class from given name
-     * @throws  ClassNotFoundException
-     *          if class was not found
-     */
-    public static Class<?> getClass(@NotNull String... names) throws ClassNotFoundException {
-        for (String name : names) {
-            try {
-                if (BukkitReflection.getMinorVersion() >= 17) {
-                    return PacketEntityView.class.getClassLoader().loadClass("net.minecraft." + name);
-                } else {
-                    return PacketEntityView.class.getClassLoader().loadClass("net.minecraft.server." + BukkitReflection.getServerPackage() + "." + name);
-                }
-            } catch (ClassNotFoundException | NullPointerException e) {
-                // Wrong class name
-            }
-        }
-        throw new ClassNotFoundException("No class found with potential names " + Arrays.toString(names));
-    }
-}

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

@@ -1,47 +1,56 @@
 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.BiConsumerWithException;
 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;
 
+/**
+ * Class for sending packets to players.
+ */
 public class PacketSender {
 
-    private static Method getHandle;
-    private static Field PLAYER_CONNECTION;
-    private static Method sendPacket;
-    @Getter private static boolean available;
+    /** Function for sending packet */
+    @NotNull
+    private final BiConsumerWithException<Player, Object> send;
 
-    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.");
+    /**
+     * Constructs new instance and attempts to load required classes, fields and methods.
+     * If something fails, error is thrown.
+     *
+     * @throws  ReflectiveOperationException
+     *          If something fails
+     */
+    public PacketSender() throws ReflectiveOperationException {
+        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");
+        Method getHandle = BukkitReflection.getBukkitClass("entity.CraftPlayer").getMethod("getHandle");
+        Field PLAYER_CONNECTION = ReflectionUtils.getOnlyField(EntityPlayer, PlayerConnection);
+        Method sendPacket;
+        if (BukkitReflection.getMinorVersion() >= 7) {
+            sendPacket = ReflectionUtils.getMethods(PlayerConnection, void.class, Packet).get(0);
+        } else {
+            sendPacket = ReflectionUtils.getMethod(PlayerConnection, new String[]{"sendPacket"}, Packet);
         }
+        send = (player, packet) -> sendPacket.invoke(PLAYER_CONNECTION.get(getHandle.invoke(player)), packet);
     }
 
+    /**
+     * Sends packet to specified player.
+     * If something goes wrong, throws an exception.
+     *
+     * @param   player
+     *          Player to send packet to
+     * @param   packet
+     *          Packet to send
+     */
     @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);
+    public void sendPacket(@NotNull Player player, @NotNull Object packet) {
+        send.accept(player, packet);
     }
 }

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

@@ -1,41 +1,54 @@
 package me.neznamy.tab.platforms.bukkit.nms;
 
 import lombok.SneakyThrows;
-import me.neznamy.tab.shared.chat.EnumChatFormat;
+import me.neznamy.tab.platforms.bukkit.BukkitUtils;
+import me.neznamy.tab.shared.util.FunctionWithException;
 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;
 
+/**
+ * Class for retrieving ping of players.
+ */
 public class PingRetriever {
 
-    private static Method getHandle;
-    private static Field PING;
+    /** Ping getter function */
+    private static FunctionWithException<Player, Integer> getPing;
 
+    /**
+     * Attempts to load required classes, fields and methods and marks class as available.
+     * If something fails, error message is printed and class is not marked as available.
+     */
     public static void tryLoad() {
         try {
-            if (BukkitReflection.getMinorVersion() < 17) {
-                getHandle = Class.forName("org.bukkit.craftbukkit." + BukkitReflection.getServerPackage() + ".entity.CraftPlayer").getMethod("getHandle");
+            if (ReflectionUtils.methodExists(Player.class, "getPing")) {
+                getPing = Player::getPing;
+            } else {
+                Method getHandle = BukkitReflection.getBukkitClass("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
+                Field PING = ReflectionUtils.getField(EntityPlayer, "ping", "field_71138_i"); // 1.5.2 - 1.16.5, 1.7.10 Thermos
+                getPing = player -> PING.getInt(getHandle.invoke(player));
             }
         } 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.");
+            getPing = p -> -1;
+            BukkitUtils.compatibilityError(e, "getting player's ping", null, "%ping% returning -1");
         }
     }
 
+    /**
+     * Returns player's ping. If ping getter is not available and fields
+     * failed to load, returns {@code -1}. If an exception was throws by
+     * reflective operation, it is re-thrown.
+     *
+     * @param   player
+     *          Player to get ping of
+     * @return  Player's ping or {@code -1} if it failed
+     */
     @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));
+        return getPing.apply(player);
     }
 }

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

@@ -1,20 +1,22 @@
 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.entity.PacketEntityView;
+import me.neznamy.tab.platforms.bukkit.hook.BukkitPremiumVanishHook;
 import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
-import me.neznamy.tab.platforms.bukkit.nms.PacketSender;
+import me.neznamy.tab.platforms.bukkit.nms.ComponentConverter;
 import me.neznamy.tab.platforms.bukkit.nms.PingRetriever;
 import me.neznamy.tab.platforms.bukkit.scoreboard.ScoreboardLoader;
+import me.neznamy.tab.platforms.bukkit.tablist.TabListBase;
 import me.neznamy.tab.shared.GroupManager;
 import me.neznamy.tab.shared.ProtocolVersion;
 import me.neznamy.tab.shared.TabConstants;
 import me.neznamy.tab.shared.chat.EnumChatFormat;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.chat.StructuredComponent;
+import me.neznamy.tab.shared.chat.SimpleComponent;
+import me.neznamy.tab.shared.chat.TabComponent;
 import me.neznamy.tab.shared.features.injection.PipelineInjector;
 import me.neznamy.tab.shared.features.types.TabFeature;
 import me.neznamy.tab.platforms.bukkit.features.BukkitTabExpansion;
@@ -27,7 +29,8 @@ import me.neznamy.tab.shared.features.PlaceholderManagerImpl;
 import me.neznamy.tab.shared.features.bossbar.BossBarManagerImpl;
 import me.neznamy.tab.shared.features.nametags.NameTag;
 import me.neznamy.tab.shared.hook.LuckPermsHook;
-import me.neznamy.tab.shared.placeholders.PlayerPlaceholderImpl;
+import me.neznamy.tab.shared.hook.PremiumVanishHook;
+import me.neznamy.tab.shared.placeholders.types.PlayerPlaceholderImpl;
 import me.neznamy.tab.shared.placeholders.expansion.EmptyTabExpansion;
 import me.neznamy.tab.shared.placeholders.expansion.TabExpansion;
 import me.neznamy.tab.shared.platform.TabPlayer;
@@ -46,7 +49,6 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.io.File;
-import java.lang.reflect.Field;
 
 /**
  * Implementation of Platform interface for Bukkit platform
@@ -54,63 +56,61 @@ import java.lang.reflect.Field;
 @Getter
 public class BukkitPlatform implements BackendPlatform {
 
-    /** Flag tracking plugin presence */
-    private final boolean premiumVanish = Bukkit.getPluginManager().isPluginEnabled("PremiumVanish");
-
-    /**
-     * Plugin instance for registering tasks and events
-     */
+    /** Plugin instance for registering tasks and events */
     @NotNull
     private final JavaPlugin plugin;
 
-    /**
-     * Variables checking presence of other plugins to hook into
-     */
+    /** Server version */
+    @Getter
+    private final ProtocolVersion serverVersion = ProtocolVersion.fromFriendlyName(Bukkit.getBukkitVersion().split("-")[0]);
+
+    /** 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;
+    /** Spigot field for tracking TPS, the array is final and only being modified instead of re-instantiated */
+    private double[] recentTps;
 
-    /**
-     * 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");
 
+    /**
+     * Constructs new instance with given plugin.
+     *
+     * @param   plugin
+     *          Plugin
+     */
     public BukkitPlatform(@NotNull JavaPlugin plugin) {
         this.plugin = plugin;
+        long time = System.currentTimeMillis();
         try {
-            server = Bukkit.getServer().getClass().getMethod("getServer").invoke(Bukkit.getServer());
-            spigotTps = server.getClass().getField("recentTps");
-        } catch (ReflectiveOperationException e) {
+            Object server = Bukkit.getServer().getClass().getMethod("getServer").invoke(Bukkit.getServer());
+            recentTps = ((double[]) server.getClass().getField("recentTps").get(server));
+        } catch (ReflectiveOperationException ignored) {
             //not spigot
         }
+        if (Bukkit.getPluginManager().isPluginEnabled("PremiumVanish")) {
+            PremiumVanishHook.setInstance(new BukkitPremiumVanishHook());
+        }
+        ComponentConverter.tryLoad();
+        PacketEntityView.tryLoad();
         PingRetriever.tryLoad();
-        PacketSender.tryLoad();
-        ScoreboardLoader.findInstance();
+        TabListBase.findInstance();
+        ScoreboardLoader.tryLoad();
         if (BukkitReflection.getMinorVersion() >= 8) {
             BukkitPipelineInjector.tryLoad();
-            HeaderFooter.findInstance();
         }
+        BukkitUtils.sendCompatibilityMessage();
+        Bukkit.getConsoleSender().sendMessage("[TAB] " + EnumChatFormat.GRAY + "Loaded NMS hook in " + (System.currentTimeMillis()-time) + "ms");
     }
 
     @Override
     @NotNull
-    public BossBarManagerImpl getLegacyBossBar() {
-        return new WitherBossBar(plugin);
+    public BossBarManagerImpl getBossBar() {
+        if (BukkitReflection.getMinorVersion() <= 8) return new WitherBossBar(plugin);
+        return new BossBarManagerImpl();
     }
 
     @Override
@@ -129,8 +129,9 @@ public class BukkitPlatform implements BackendPlatform {
             RegisteredServiceProvider<Chat> rspChat = Bukkit.getServicesManager().getRegistration(Chat.class);
             if (rspChat != null) {
                 Chat chat = rspChat.getProvider();
-                manager.registerPlayerPlaceholder("%vault-prefix%", 1000, p -> chat.getPlayerPrefix((Player) p.getPlayer()));
-                manager.registerPlayerPlaceholder("%vault-suffix%", 1000, p -> chat.getPlayerSuffix((Player) p.getPlayer()));
+                int refresh = TAB.getInstance().getConfiguration().getPermissionRefreshInterval();
+                manager.registerPlayerPlaceholder("%vault-prefix%", refresh, p -> chat.getPlayerPrefix((Player) p.getPlayer()));
+                manager.registerPlayerPlaceholder("%vault-suffix%", refresh, p -> chat.getPlayerSuffix((Player) p.getPlayer()));
             }
         }
         // Override for the PAPI placeholder to prevent console errors on unsupported server versions when ping field changes
@@ -148,7 +149,10 @@ public class BukkitPlatform implements BackendPlatform {
     @Override
     @NotNull
     public NameTag getUnlimitedNameTags() {
-        return BukkitReflection.getMinorVersion() >= 8 ? new BukkitNameTagX(plugin) : new NameTag();
+        return BukkitReflection.getMinorVersion() >= 8 &&
+                PacketEntityView.isAvailable() &&
+                BukkitPipelineInjector.isAvailable() ?
+                new BukkitNameTagX(plugin) : new NameTag();
     }
 
     @Override
@@ -191,6 +195,14 @@ public class BukkitPlatform implements BackendPlatform {
         }
     }
 
+    /**
+     * Registers a sync placeholder with given identifier and refresh.
+     *
+     * @param   identifier
+     *          Placeholder identifier
+     * @param   refresh
+     *          Placeholder refresh
+     */
     public void registerSyncPlaceholder(@NotNull String identifier, int refresh) {
         String syncedPlaceholder = "%" + identifier.substring(6);
         PlayerPlaceholderImpl[] ppl = new PlayerPlaceholderImpl[1];
@@ -205,21 +217,19 @@ public class BukkitPlatform implements BackendPlatform {
     }
 
     @Override
-    public void logInfo(@NotNull IChatBaseComponent message) {
-        Bukkit.getConsoleSender().sendMessage("[TAB] " + BukkitUtils.toBukkitFormat(message, true));
+    public void logInfo(@NotNull TabComponent message) {
+        Bukkit.getConsoleSender().sendMessage("[TAB] " + toBukkitFormat(message, true));
     }
 
     @Override
-    public void logWarn(@NotNull IChatBaseComponent message) {
-        Bukkit.getConsoleSender().sendMessage(EnumChatFormat.RED.getFormat() + "[TAB] [WARN] " + BukkitUtils.toBukkitFormat(message, true));
+    public void logWarn(@NotNull TabComponent message) {
+        Bukkit.getConsoleSender().sendMessage(EnumChatFormat.RED + "[TAB] [WARN] " + toBukkitFormat(message, true));
     }
 
     @Override
     @NotNull
     public String getServerVersionInfo() {
-        return "[Bukkit] " + Bukkit.getName() + " - " +
-                Bukkit.getBukkitVersion().split("-")[0] +
-                " (" + Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3] + ")";
+        return "[Bukkit] " + Bukkit.getName() + " - " + Bukkit.getBukkitVersion().split("-")[0];
     }
 
     @Override
@@ -235,13 +245,13 @@ public class BukkitPlatform implements BackendPlatform {
             command.setExecutor(cmd);
             command.setTabCompleter(cmd);
         } else {
-            logWarn(new IChatBaseComponent("Failed to register command, is it defined in plugin.yml?"));
+            logWarn(new SimpleComponent("Failed to register command, is it defined in plugin.yml?"));
         }
     }
 
     @Override
     public void startMetrics() {
-        Metrics metrics = new Metrics(plugin, 5304);
+        Metrics metrics = new Metrics(plugin, TabConstants.BSTATS_PLUGIN_ID_BUKKIT);
         metrics.addCustomChart(new SimplePie(TabConstants.MetricsChart.UNLIMITED_NAME_TAG_MODE_ENABLED,
                 () -> TAB.getInstance().getFeatureManager().isFeatureEnabled(TabConstants.Feature.UNLIMITED_NAME_TAGS) ? "Yes" : "No"));
         metrics.addCustomChart(new SimplePie(TabConstants.MetricsChart.PERMISSION_SYSTEM,
@@ -252,14 +262,17 @@ public class BukkitPlatform implements BackendPlatform {
 
     @Override
     @NotNull
-    public ProtocolVersion getServerVersion() {
-        return ProtocolVersion.fromFriendlyName(Bukkit.getBukkitVersion().split("-")[0]);
+    public File getDataFolder() {
+        return plugin.getDataFolder();
     }
 
     @Override
-    @NotNull
-    public File getDataFolder() {
-        return plugin.getDataFolder();
+    public Object convertComponent(@NotNull TabComponent component, boolean modern) {
+        if (ComponentConverter.INSTANCE != null) {
+            return ComponentConverter.INSTANCE.convert(component, modern);
+        } else {
+            return component;
+        }
     }
 
     @Override
@@ -278,12 +291,11 @@ public class BukkitPlatform implements BackendPlatform {
     }
 
     @Override
-    @SneakyThrows
     public double getTPS() {
-        if (paperTps) {
+        if (recentTps != null) {
+            return recentTps[0];
+        } else if (paperTps) {
             return Bukkit.getTPS()[0];
-        } else if (spigotTps != null) {
-            return ((double[]) spigotTps.get(server))[0];
         } else {
             return -1;
         }
@@ -295,22 +307,55 @@ public class BukkitPlatform implements BackendPlatform {
         return -1;
     }
 
-    public void runSync(@NotNull Entity entity, @NotNull Runnable task) {
-        Bukkit.getScheduler().runTask(plugin, task);
-    }
-
+    /**
+     * Runs an entity task that may or may not need to use its main thread.
+     *
+     * @param   entity
+     *          Entity to work with
+     * @param   task
+     *          Task to run
+     */
     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();
+        if (BackendPlatform.super.canSee(viewer, target)) return true;
+        return ((BukkitTabPlayer)viewer).getPlayer().canSee(((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);
+    /**
+     * Converts component to legacy string using bukkit RGB format if supported by both server and client.
+     * If not, closest legacy color is used instead.
+     *
+     * @param   component
+     *          Component to convert
+     * @param   rgbClient
+     *          Whether client accepts RGB colors or not.
+     * @return  Converted string using bukkit color format
+     */
+    @NotNull
+    public String toBukkitFormat(@NotNull TabComponent component, boolean rgbClient) {
+        if (component instanceof SimpleComponent) return component.toLegacyText();
+        StructuredComponent iComponent = (StructuredComponent) component;
+        StringBuilder sb = new StringBuilder();
+        if (iComponent.getModifier().getColor() != null) {
+            if (serverVersion.supportsRGB() && rgbClient) {
+                String hexCode = iComponent.getModifier().getColor().getHexCode();
+                char c = EnumChatFormat.COLOR_CHAR;
+                sb.append(c).append("x").append(c).append(hexCode.charAt(0)).append(c).append(hexCode.charAt(1))
+                        .append(c).append(hexCode.charAt(2)).append(c).append(hexCode.charAt(3))
+                        .append(c).append(hexCode.charAt(4)).append(c).append(hexCode.charAt(5));
+            } else {
+                sb.append(iComponent.getModifier().getColor().getLegacyColor());
+            }
+        }
+        sb.append(iComponent.getModifier().getMagicCodes());
+        sb.append(iComponent.getText());
+        for (StructuredComponent extra : iComponent.getExtra()) {
+            sb.append(toBukkitFormat(extra, rgbClient));
+        }
+        return sb.toString();
     }
 }

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

@@ -5,8 +5,8 @@ import me.clip.placeholderapi.PlaceholderAPI;
 import me.neznamy.tab.platforms.bukkit.features.PerWorldPlayerList;
 import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.TabConstants;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
-import me.neznamy.tab.shared.placeholders.PlayerPlaceholderImpl;
+import me.neznamy.tab.shared.chat.SimpleComponent;
+import me.neznamy.tab.shared.placeholders.types.PlayerPlaceholderImpl;
 import me.neznamy.tab.shared.platform.TabPlayer;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;
@@ -18,10 +18,16 @@ import org.jetbrains.annotations.NotNull;
 import java.util.function.Consumer;
 
 /**
- * Platform override for Folia
+ * Platform override for Folia.
  */
 public class FoliaPlatform extends BukkitPlatform {
 
+    /**
+     * Constructs new instance with given plugin.
+     *
+     * @param   plugin
+     *          Plugin
+     */
     public FoliaPlatform(@NotNull JavaPlugin plugin) {
         super(plugin);
     }
@@ -31,7 +37,7 @@ public class FoliaPlatform extends BukkitPlatform {
         super.loadPlayers();
 
         // Values are never updated in the API, warn users
-        logWarn(new IChatBaseComponent("Folia never updates MSPT and TPS values in the API, making " +
+        logWarn(new SimpleComponent("Folia never updates MSPT and TPS values in the API, making " +
                 "%mspt% and %tps% return the default values (0 and 20)."));
 
         // Folia never calls PlayerChangedWorldEvent, this is a workaround
@@ -74,7 +80,6 @@ public class FoliaPlatform extends BukkitPlatform {
      * @param   task
      *          Task to run
      */
-    @Override
     @SneakyThrows
     @SuppressWarnings("JavaReflectionMemberAccess")
     public void runSync(@NotNull Entity entity, @NotNull Runnable task) {

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

@@ -1,268 +0,0 @@
-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;
-import me.neznamy.tab.shared.Limitations;
-import me.neznamy.tab.shared.ProtocolVersion;
-import me.neznamy.tab.shared.TAB;
-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.ReflectionUtils;
-import org.bukkit.Bukkit;
-import org.bukkit.ChatColor;
-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:
- * #1 - Limitations on legacy versions are forced in the API.
- *      While this may not seem like a problem, it enforces those
- *      limits even for 1.13+ players (if using ViaVersion).<p>
- * #2 - Modern versions no longer have any limits, but md_5
- *      decided to add some random limits for absolutely no reason
- *      at all. Scoreboard title received a random 128 characters
- *      limit including color codes. Together with the almighty bukkit
- *      RGB format using 14 characters for 1 color code, this makes
- *      gradients just impossible to use. Team prefix/suffix also
- *      received a 64 characters limit (excluding color codes at least),
- *      however that might not be enough for displaying a line of text
- *      in sidebar, which would require splitting the text into prefix
- *      and suffix, which is just begging for bugs to be introduced.<p>
- * #3 - Other plugins can decide to put players into their own
- *      scoreboard, automatically destroying all visuals made by the
- *      plugin. They might also put all players into the same scoreboard,
- *      making per-player view of teams, especially sidebar not working.<p>
- */
-// Throw the NPE if something is not as expected, parent class should ensure it anyway
-@SuppressWarnings({"ConstantConditions", "deprecation"})
-public class BukkitScoreboard extends Scoreboard<BukkitTabPlayer> {
-
-    /** Flag tracking whether this implementation is available for use */
-    @Getter
-    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();
-
-    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
-        runSync(() -> {
-            scoreboard = Bukkit.getScoreboardManager().getNewScoreboard();
-            player.getPlayer().setScoreboard(scoreboard);
-        });
-    }
-
-    @Override
-    public void setDisplaySlot0(int slot, @NotNull String objective) {
-        checkPlayerScoreboard();
-        scoreboard.getObjective(objective).setDisplaySlot(slots[slot]);
-    }
-
-    @Override
-    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(scoreHolder).setScore(score);
-        } else {
-            scoreboard.getObjective(objective).getScore(Bukkit.getOfflinePlayer(scoreHolder)).setScore(score);
-        }
-    }
-
-    @Override
-    public void removeScore0(@NotNull String objective, @NotNull String scoreHolder) {
-        checkPlayerScoreboard();
-        if (serverMinorVersion >= 7 && TAB.getInstance().getServerVersion().getNetworkId() >= ProtocolVersion.V1_7_8.getNetworkId()) {
-            scoreboard.resetScores(scoreHolder);
-        } else {
-            scoreboard.resetScores(Bukkit.getOfflinePlayer(scoreHolder));
-        }
-    }
-
-    @Override
-    public void registerObjective0(@NotNull String objectiveName, @NotNull String title, int display,
-                                   @Nullable IChatBaseComponent numberFormat) {
-        checkPlayerScoreboard();
-        newObjective(objectiveName, "dummy", title, display);
-    }
-
-    @Override
-    public void unregisterObjective0(@NotNull String objectiveName) {
-        checkPlayerScoreboard();
-        scoreboard.getObjective(objectiveName).unregister();
-    }
-
-    @Override
-    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.values()[display]);
-    }
-
-    @Override
-    public void registerTeam0(@NotNull String name, @NotNull String prefix, @NotNull String suffix,
-                              @NotNull NameVisibility visibility, @NotNull CollisionRule collision,
-                              @NotNull Collection<String> players, int options) {
-        checkPlayerScoreboard();
-        Team team = scoreboard.registerNewTeam(name);
-        setPrefix(team, prefix);
-        setSuffix(team, suffix);
-        if (serverMinorVersion >= 8)
-            team.setNameTagVisibility(NameTagVisibility.valueOf(visibility.name()));
-        if (serverMinorVersion >= 9)
-            team.setOption(Team.Option.COLLISION_RULE, Team.OptionStatus.values()[collision.ordinal()]);
-        if (serverMinorVersion >= 13)
-            team.setColor(ChatColor.valueOf(EnumChatFormat.lastColorsOf(prefix).name()));
-        if (serverMinorVersion >= 7 && TAB.getInstance().getServerVersion().getNetworkId() >= ProtocolVersion.V1_7_8.getNetworkId()) {
-            players.forEach(team::addEntry);
-        } else {
-            players.forEach(player -> team.addPlayer(Bukkit.getOfflinePlayer(player)));
-        }
-        team.setAllowFriendlyFire((options & 0x01) != 0);
-        team.setCanSeeFriendlyInvisibles((options & 0x02) != 0);
-    }
-
-    @Override
-    public void unregisterTeam0(@NotNull String name) {
-        checkPlayerScoreboard();
-        scoreboard.getTeam(name).unregister();
-    }
-
-    @Override
-    public void updateTeam0(@NotNull String name, @NotNull String prefix, @NotNull String suffix,
-                            @NotNull NameVisibility visibility, @NotNull CollisionRule collision, int options) {
-        checkPlayerScoreboard();
-        Team team = scoreboard.getTeam(name);
-        setPrefix(team, prefix);
-        setSuffix(team, suffix);
-        if (serverMinorVersion >= 8)
-            team.setNameTagVisibility(NameTagVisibility.valueOf(visibility.name()));
-        if (serverMinorVersion >= 9)
-            team.setOption(Team.Option.COLLISION_RULE, Team.OptionStatus.values()[collision.ordinal()]);
-        if (serverMinorVersion >= 13)
-            team.setColor(ChatColor.valueOf(EnumChatFormat.lastColorsOf(prefix).name()));
-        team.setAllowFriendlyFire((options & 0x01) != 0);
-        team.setCanSeeFriendlyInvisibles((options & 0x02) != 0);
-    }
-
-    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.values()[display]
-            );
-        } else {
-            setDisplayName(scoreboard.registerNewObjective(objectiveName, display == HealthDisplay.HEARTS ? "health" : "dummy"), title);
-        }
-    }
-
-    public void setDisplayName(@NotNull Objective objective, @NotNull String displayName) {
-        objective.setDisplayName(transform(displayName, 128, Limitations.SCOREBOARD_TITLE_PRE_1_13));
-    }
-
-    public void setPrefix(@NotNull Team team, @NotNull String prefix) {
-        team.setPrefix(transform(prefix, 64, Limitations.TEAM_PREFIX_SUFFIX_PRE_1_13));
-    }
-
-    public void setSuffix(@NotNull Team team, @NotNull String suffix) {
-        team.setSuffix(transform(suffix, 64, Limitations.TEAM_PREFIX_SUFFIX_PRE_1_13));
-    }
-
-    /**
-     * Transforms text into format using bukkit RGB syntax if server version is 1.16+
-     *
-     * @param   text
-     *          Text to transform
-     * @param   maxLengthModern
-     *          Maximum text length defined by bukkit API on 1.13+
-     * @param   maxLengthLegacy
-     *          Maximum text length defined by bukkit API on 1.12-
-     * @return  Converted text
-     */
-    @NotNull
-    private String transform(@NotNull String text, int maxLengthModern, int maxLengthLegacy) {
-        String transformed = BukkitUtils.toBukkitFormat(IChatBaseComponent.optimizedComponent(text), player.getVersion().getMinorVersion() >= 16);
-        if (serverMinorVersion >= 16 && maxLengthModern < 128) { // Scoreboard title is not stripping colors
-            while (ChatColor.stripColor(transformed).length() > maxLengthModern)
-                transformed = transformed.substring(0, transformed.length()-1);
-        } else if (serverMinorVersion >= 13) {
-            if (transformed.length() > maxLengthModern)
-                transformed = transformed.substring(0, maxLengthModern);
-        } else {
-            if (transformed.length() > maxLengthLegacy)
-                transformed = transformed.substring(0, maxLengthLegacy);
-        }
-        return transformed;
-    }
-
-    /**
-     * Makes sure player is in the correct scoreboard.
-     * If not, puts the player into correct scoreboard and prints
-     * a warning.
-     * The only possible reason for this to happen is another plugin
-     * putting a player into a different scoreboard.
-     * 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) {
-            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

@@ -1,67 +1,77 @@
 package me.neznamy.tab.platforms.bukkit.scoreboard;
 
+import lombok.NonNull;
 import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.chat.EnumChatFormat;
 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> {
+/**
+ * Dummy implementation if no scoreboard implementation is available.
+ */
+public class NullScoreboard extends Scoreboard<BukkitTabPlayer, Object> {
 
-    public NullScoreboard(@NotNull BukkitTabPlayer player) {
+    /**
+     * Constructs new instance with given player.
+     *
+     * @param   player
+     *          Player this scoreboard will belong to
+     */
+    public NullScoreboard(@NonNull BukkitTabPlayer player) {
         super(player);
     }
 
     @Override
-    protected void setDisplaySlot0(int slot, @NotNull String objective) {
+    protected void setDisplaySlot0(int slot, @NonNull String objective) {
         // Do nothing
     }
 
     @Override
-    protected void setScore0(@NotNull String objective, @NotNull String scoreHolder, int score,
-                             @Nullable IChatBaseComponent displayName, @Nullable IChatBaseComponent numberFormat) {
+    protected void setScore0(@NonNull String objective, @NonNull String scoreHolder, int score,
+                             @Nullable Object displayName, @Nullable Object numberFormat) {
         // Do nothing
     }
 
     @Override
-    protected void removeScore0(@NotNull String objective, @NotNull String scoreHolder) {
+    protected void removeScore0(@NonNull String objective, @NonNull String scoreHolder) {
         // Do nothing
     }
 
     @Override
-    protected void registerObjective0(@NotNull String objectiveName, @NotNull String title, int display,
-                                      @Nullable IChatBaseComponent numberFormat) {
+    protected void registerObjective0(@NonNull String objectiveName, @NonNull String title, int display,
+                                      @Nullable Object numberFormat) {
         // Do nothing
     }
 
     @Override
-    protected void unregisterObjective0(@NotNull String objectiveName) {
+    protected void unregisterObjective0(@NonNull String objectiveName) {
         // Do nothing
     }
 
     @Override
-    protected void updateObjective0(@NotNull String objectiveName, @NotNull String title, int display,
-                                    @Nullable IChatBaseComponent numberFormat) {
+    protected void updateObjective0(@NonNull String objectiveName, @NonNull String title, int display,
+                                    @Nullable Object 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) {
+    protected void registerTeam0(@NonNull String name, @NonNull String prefix, @NonNull String suffix,
+                                 @NonNull NameVisibility visibility, @NonNull CollisionRule collision,
+                                 @NonNull Collection<String> players, int options, @NonNull EnumChatFormat color) {
         // Do nothing
     }
 
     @Override
-    protected void unregisterTeam0(@NotNull String name) {
+    protected void unregisterTeam0(@NonNull 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) {
+    protected void updateTeam0(@NonNull String name, @NonNull String prefix, @NonNull String suffix,
+                               @NonNull NameVisibility visibility, @NonNull CollisionRule collision,
+                               int options, @NonNull EnumChatFormat color) {
         // Do nothing
     }
 }

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

@@ -1,517 +0,0 @@
-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.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;
-import java.lang.reflect.Method;
-import java.util.Collection;
-import java.util.List;
-
-/**
- * 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")
-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 Class<?> NumberFormat;
-    private static Constructor<?> newFixedFormat;
-
-    // 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 Constructor<?> newScoreboardObjective;
-    private static Method ScoreboardObjective_setDisplayName;
-    private static Enum<?>[] healthDisplays;
-    private static Object IScoreboardCriteria_dummy;
-
-    private static ScorePacketData scorePacketData;
-    public static TeamPacketData teamPacketData;
-    public static DisplayPacketData displayPacketData;
-
-    private static Method ChatSerializer_DESERIALIZE;
-    private static final ComponentCache<IChatBaseComponent, Object> componentCache = new ComponentCache<>(1000,
-            (component, clientVersion) -> ChatSerializer_DESERIALIZE.invoke(null, component.toString(clientVersion)));
-
-    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) {
-                Component = BukkitReflection.getClass("network.chat.Component", "network.chat.IChatBaseComponent", "IChatBaseComponent");
-                Class<?> ChatSerializer = BukkitReflection.getClass("network.chat.Component$Serializer",
-                        "network.chat.IChatBaseComponent$ChatSerializer", "IChatBaseComponent$ChatSerializer", "ChatSerializer");
-                ChatSerializer_DESERIALIZE = ReflectionUtils.getMethods(ChatSerializer, Object.class, String.class).get(0);
-            }
-            if (minorVersion >= 8) {
-                Class<?> EnumScoreboardHealthDisplay = BukkitReflection.getClass(
-                        "world.scores.criteria.ObjectiveCriteria$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 < 13) {
-                ScoreboardObjective_setDisplayName = ReflectionUtils.getOnlyMethod(ScoreboardObjective, void.class, String.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
-        }
-    }
-
-    public PacketScoreboard(@NotNull BukkitTabPlayer player) {
-        super(player);
-    }
-
-    @Override
-    @SneakyThrows
-    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, int display,
-                                   @Nullable IChatBaseComponent numberFormat) {
-        player.sendPacket(newObjectivePacket(ObjectiveAction.REGISTER, objectiveName, title, display, numberFormat));
-    }
-
-    @Override
-    public void unregisterObjective0(@NotNull String objectiveName) {
-        player.sendPacket(newObjectivePacket(ObjectiveAction.UNREGISTER, objectiveName, "", 0, null));
-    }
-
-    @Override
-    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 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]);
-        }
-        return packet;
-    }
-
-    @Override
-    @SneakyThrows
-    public void registerTeam0(@NotNull String name, @NotNull String prefix, @NotNull String suffix,
-                              @NotNull NameVisibility visibility, @NotNull CollisionRule collision,
-                              @NotNull Collection<String> players, int options) {
-        player.sendPacket(teamPacketData.registerTeam(name, prefix, toComponent(prefix), suffix,
-                toComponent(suffix), visibility, collision, players, options));
-    }
-
-    @Override
-    @SneakyThrows
-    public void unregisterTeam0(@NotNull String name) {
-        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) {
-        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 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) {
-            // 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 {
-                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);
-            }
-        }
-    }
-
-    public static class TeamPacketData {
-
-        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;
-        }
-    }
-
-    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

@@ -1,65 +0,0 @@
-package me.neznamy.tab.platforms.bukkit.scoreboard;
-
-import lombok.Getter;
-import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
-import me.neznamy.tab.shared.hook.AdventureHook;
-import me.neznamy.tab.shared.util.ReflectionUtils;
-import net.kyori.adventure.text.Component;
-import org.bukkit.scoreboard.Objective;
-import org.bukkit.scoreboard.RenderType;
-import org.bukkit.scoreboard.Team;
-import org.jetbrains.annotations.NotNull;
-
-/**
- * Scoreboard handler using Paper API, which got added
- * in early 1.16.5 builds. Unlike the Bukkit API, the new
- * methods using adventure components do not have any
- * pointless artificial limits added in.
- * <p>
- * However, it still inherits the issue with compatibility
- * with other plugins that create scoreboards.
- */
-public class PaperScoreboard extends BukkitScoreboard {
-
-    /** Flag tracking whether this implementation is available for use */
-    @Getter
-    private static final boolean available = ReflectionUtils.classExists("net.kyori.adventure.text.Component") &&
-            ReflectionUtils.methodExists(Team.class, "prefix", Component.class);
-
-    public PaperScoreboard(@NotNull BukkitTabPlayer player) {
-        super(player);
-    }
-
-    @Override
-    public void newObjective(String objectiveName, String criteria, String title, int display) {
-        scoreboard.registerNewObjective(objectiveName, criteria, toAdventure(title), RenderType.values()[display]);
-    }
-
-    @Override
-    public void setDisplayName(@NotNull Objective objective, @NotNull String displayName) {
-        objective.displayName(toAdventure(displayName));
-    }
-
-    @Override
-    public void setPrefix(@NotNull Team team, @NotNull String prefix) {
-        team.prefix(toAdventure(prefix));
-    }
-
-    @Override
-    public void setSuffix(@NotNull Team team, @NotNull String suffix) {
-        team.suffix(toAdventure(suffix));
-    }
-
-    /**
-     * Converts raw text into adventure component
-     *
-     * @param   text
-     *          Text to convert
-     * @return  Converted component
-     */
-    @NotNull
-    private Component toAdventure(@NotNull String text) {
-        return AdventureHook.toAdventureComponent(IChatBaseComponent.optimizedComponent(text), player.getVersion());
-    }
-}

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

@@ -2,44 +2,35 @@ 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.platforms.bukkit.BukkitUtils;
+import me.neznamy.tab.platforms.bukkit.scoreboard.packet.PacketScoreboard;
 import me.neznamy.tab.shared.platform.Scoreboard;
-import org.bukkit.Bukkit;
+import org.jetbrains.annotations.NotNull;
 
 import java.util.function.Function;
 
+/**
+ * Loader finding the best available Scoreboard implementation.
+ */
 public class ScoreboardLoader {
 
     /** Instance function */
     @Getter
-    private static Function<BukkitTabPlayer, Scoreboard<BukkitTabPlayer>> instance;
+    @NotNull
+    private static Function<BukkitTabPlayer, Scoreboard<BukkitTabPlayer, ?>> instance = NullScoreboard::new;
 
     /**
-     * Finds the best available instance for current server software.
+     * Tries to load Scoreboard packets.
      */
-    public static void findInstance() {
-        if (PacketScoreboard.isAvailable() && PacketSender.isAvailable()) {
+    public static void tryLoad() {
+        if (PacketScoreboard.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.");
+            BukkitUtils.compatibilityError(PacketScoreboard.getException(), "Scoreboards", null,
+                    "Scoreboard feature will not work",
+                    "Belowname feature will not work",
+                    "Player objective feature will not work",
+                    "Scoreboard teams feature will not work (nametags & sorting)");
         }
     }
-
-    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/java/me/neznamy/tab/platforms/bukkit/scoreboard/packet/DisplayPacketData.java

@@ -0,0 +1,83 @@
+package me.neznamy.tab.platforms.bukkit.scoreboard.packet;
+
+import lombok.NonNull;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.FunctionWithException;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+
+/**
+ * Class storing NMS fields and methods of DisplayObjective packet.
+ */
+public class DisplayPacketData {
+
+    private final Class<?> DisplayObjectiveClass;
+    private final Constructor<?> newDisplayObjective;
+    private final Field DisplayObjective_OBJECTIVE_NAME;
+    private final Object[] displaySlots;
+    private final FunctionWithException<Object, Integer> packetToSlot;
+
+    /**
+     * Constructs new instance and loads all required NMS fields.
+     *
+     * @throws  ReflectiveOperationException
+     *          If something fails
+     */
+    public DisplayPacketData() throws ReflectiveOperationException {
+        Class<?> ScoreboardObjective = BukkitReflection.getClass("world.scores.Objective", "world.scores.ScoreboardObjective", "ScoreboardObjective");
+        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);
+            Field DisplayObjective_POSITION = ReflectionUtils.getOnlyField(DisplayObjectiveClass, DisplaySlot);
+            newDisplayObjective = DisplayObjectiveClass.getConstructor(DisplaySlot, ScoreboardObjective);
+            packetToSlot = packet -> ((Enum<?>)DisplayObjective_POSITION.get(packet)).ordinal();
+        } else {
+            displaySlots = new Object[]{0, 1, 2};
+            Field DisplayObjective_POSITION = ReflectionUtils.getOnlyField(DisplayObjectiveClass, int.class);
+            newDisplayObjective = DisplayObjectiveClass.getConstructor(int.class, ScoreboardObjective);
+            packetToSlot = DisplayObjective_POSITION::getInt;
+        }
+    }
+
+    /**
+     * Creates a packet for setting display slot.
+     *
+     * @param   slot
+     *          Objective slot
+     * @param   objective
+     *          Objective to display
+     * @return  Packet for setting display slot
+     */
+    @SneakyThrows
+    public Object setDisplaySlot(int slot, @NonNull Object objective) {
+        return newDisplayObjective.newInstance(displaySlots[slot], objective);
+    }
+
+    /**
+     * Checks if packet is display objective packet and forwards it to enabled features.
+     *
+     * @param   player
+     *          Player who received packet
+     * @param   packet
+     *          Received packet
+     */
+    @SneakyThrows
+    public void onPacketSend(@NonNull TabPlayer player, @NonNull Object packet) {
+        if (DisplayObjectiveClass.isInstance(packet)) {
+            TAB.getInstance().getFeatureManager().onDisplayObjective(player, packetToSlot.apply(packet),
+                    (String) DisplayObjective_OBJECTIVE_NAME.get(packet));
+        }
+    }
+}

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

@@ -0,0 +1,262 @@
+package me.neznamy.tab.platforms.bukkit.scoreboard.packet;
+
+import lombok.Getter;
+import lombok.NonNull;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
+import me.neznamy.tab.platforms.bukkit.nms.ComponentConverter;
+import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
+import me.neznamy.tab.platforms.bukkit.nms.PacketSender;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.chat.EnumChatFormat;
+import me.neznamy.tab.shared.chat.TabComponent;
+import me.neznamy.tab.shared.platform.Scoreboard;
+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;
+import java.lang.reflect.Method;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Scoreboard implementation which uses packets
+ * to send scoreboards to use the full potential on all versions
+ * and server software without any artificial limits.
+ */
+public class PacketScoreboard extends Scoreboard<BukkitTabPlayer, Object> {
+
+    @Getter
+    private static boolean available;
+
+    @Getter
+    private static Exception exception;
+
+    static Class<?> Component;
+    static Class<?> Scoreboard;
+    static Class<?> ScoreboardObjective;
+    static Object emptyScoreboard;
+    static Class<?> NumberFormat;
+    private static Constructor<?> newFixedFormat;
+
+    // Objective packet
+    private static Class<?> ObjectivePacketClass;
+    private static Constructor<?> newObjectivePacket;
+    private static Field Objective_OBJECTIVE_NAME;
+    private static Field Objective_METHOD;
+    private static Field Objective_RENDER_TYPE;
+    static Constructor<?> newScoreboardObjective;
+    private static Method ScoreboardObjective_setDisplayName;
+    private static Enum<?>[] healthDisplays;
+    static Object IScoreboardCriteria_dummy;
+
+    private static ScorePacketData scorePacketData;
+    @Getter private static TeamPacketData teamPacketData;
+    @Getter private static DisplayPacketData displayPacketData;
+    private static PacketSender packetSender;
+
+    private final Map<String, Object> teams = new HashMap<>();
+
+    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) {
+                Component = BukkitReflection.getClass("network.chat.Component", "network.chat.IChatBaseComponent", "IChatBaseComponent");
+                ComponentConverter.ensureAvailable();
+            }
+            if (minorVersion >= 8) {
+                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 < 13) {
+                ScoreboardObjective_setDisplayName = ReflectionUtils.getOnlyMethod(ScoreboardObjective, void.class, String.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();
+            packetSender = new PacketSender();
+            available = true;
+        } catch (Exception e) {
+            exception = e;
+        }
+    }
+
+    /**
+     * Constructs new instance with given player.
+     *
+     * @param   player
+     *          Player this scoreboard will belong to
+     */
+    public PacketScoreboard(@NonNull BukkitTabPlayer player) {
+        super(player);
+    }
+
+    @Override
+    public void setDisplaySlot0(int slot, @NonNull String objective) {
+        packetSender.sendPacket(player.getPlayer(), displayPacketData.setDisplaySlot(slot, newObjective(objective, "", 0, null)));
+    }
+
+    @Override
+    public void registerObjective0(@NonNull String objectiveName, @NonNull String title, int display,
+                                   @Nullable Object numberFormat) {
+        packetSender.sendPacket(player.getPlayer(), newObjectivePacket(ObjectiveAction.REGISTER, objectiveName, title, display, numberFormat));
+    }
+
+    @Override
+    public void unregisterObjective0(@NonNull String objectiveName) {
+        packetSender.sendPacket(player.getPlayer(), newObjectivePacket(ObjectiveAction.UNREGISTER, objectiveName, "", 0, null));
+    }
+
+    @Override
+    public void updateObjective0(@NonNull String objectiveName, @NonNull String title, int display,
+                                 @Nullable Object numberFormat) {
+        packetSender.sendPacket(player.getPlayer(), newObjectivePacket(ObjectiveAction.UPDATE, objectiveName, title, display, numberFormat));
+    }
+
+    @SneakyThrows
+    private Object newObjectivePacket(int action, @NonNull String objectiveName, @NonNull String title, int display,
+                                      @Nullable Object 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]);
+        }
+        return packet;
+    }
+
+    @Override
+    public void registerTeam0(@NonNull String name, @NonNull String prefix, @NonNull String suffix,
+                              @NonNull NameVisibility visibility, @NonNull CollisionRule collision,
+                              @NonNull Collection<String> players, int options, @NonNull EnumChatFormat color) {
+        Object team = teamPacketData.createTeam(name);
+        teams.put(name, team);
+        packetSender.sendPacket(player.getPlayer(), teamPacketData.registerTeam(team, prefix, toComponent(prefix), suffix,
+                toComponent(suffix), visibility, collision, players, options, color));
+    }
+
+    @Override
+    public void unregisterTeam0(@NonNull String name) {
+        packetSender.sendPacket(player.getPlayer(), teamPacketData.unregisterTeam(teams.remove(name)));
+    }
+
+    @Override
+    public void updateTeam0(@NonNull String name, @NonNull String prefix, @NonNull String suffix,
+                            @NonNull NameVisibility visibility, @NonNull CollisionRule collision,
+                            int options, @NonNull EnumChatFormat color) {
+        packetSender.sendPacket(player.getPlayer(), teamPacketData.updateTeam(teams.get(name), prefix, toComponent(prefix), suffix,
+                toComponent(suffix), visibility, collision, options, color));
+    }
+
+    @Override
+    public void setScore0(@NonNull String objective, @NonNull String scoreHolder, int score,
+                          @Nullable Object displayName, @Nullable Object numberFormat) {
+        packetSender.sendPacket(player.getPlayer(), scorePacketData.setScore(objective, scoreHolder, score, displayName, toFixedFormat(numberFormat)));
+    }
+
+    @Override
+    public void removeScore0(@NonNull String objective, @NonNull String scoreHolder) {
+        packetSender.sendPacket(player.getPlayer(), scorePacketData.removeScore(objective, scoreHolder));
+    }
+
+    @Override
+    @SneakyThrows
+    public void onPacketSend(@NonNull Object packet) {
+        displayPacketData.onPacketSend(player, packet);
+        if (ObjectivePacketClass.isInstance(packet))  {
+            TAB.getInstance().getFeatureManager().onObjective(player,
+                    Objective_METHOD.getInt(packet), (String) Objective_OBJECTIVE_NAME.get(packet));
+        }
+        if (isAntiOverrideTeams()) teamPacketData.onPacketSend(player, packet);
+    }
+
+    /**
+     * 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 Object newObjective(@NonNull String objectiveName, @NonNull String title, int renderType,
+                               @Nullable Object 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) {
+            // 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;
+    }
+
+    @NotNull
+    private Object toComponent(@NonNull String text) {
+        return TabComponent.optimized(text).convert(player.getVersion());
+    }
+
+    @Nullable
+    @SneakyThrows
+    private Object toFixedFormat(@Nullable Object numberFormat) {
+        if (numberFormat == null || newFixedFormat == null) return null;
+        return newFixedFormat.newInstance(numberFormat);
+    }
+}

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/scoreboard/packet/ScorePacketData.java

@@ -0,0 +1,123 @@
+package me.neznamy.tab.platforms.bukkit.scoreboard.packet;
+
+import lombok.NonNull;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
+import me.neznamy.tab.shared.platform.Scoreboard;
+import me.neznamy.tab.shared.util.BiFunctionWithException;
+import me.neznamy.tab.shared.util.QuintFunction;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.util.Optional;
+
+/**
+ * Class containing data for scoreboard score set/reset packets.
+ */
+public class ScorePacketData {
+
+    private final QuintFunction<String, String, Integer, Object, Object, Object> setScore;
+    private final BiFunctionWithException<String, String, Object> removeScore;
+
+    /**
+     * Constructs new instance and loads all fields. Throws exception if something went wrong.
+     *
+     * @throws  ReflectiveOperationException
+     *          If something went wrong
+     */
+    public ScorePacketData() throws ReflectiveOperationException {
+        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()) {
+            QuintFunction<String, String, Integer, Object, Object, Object> setScore0;
+            try {
+                // 1.20.5+
+                Constructor<?> newSetScore = SetScorePacket.getConstructor(String.class, String.class, int.class, Optional.class, Optional.class);
+                setScore0 = (objective, holder, score, displayName, numberFormat) ->
+                        newSetScore.newInstance(holder, objective, score, Optional.ofNullable(displayName), Optional.ofNullable(numberFormat));
+            } catch (ReflectiveOperationException e) {
+                // 1.20.3 - 1.20.4
+                Constructor<?> newSetScore = SetScorePacket.getConstructor(String.class, String.class, int.class, PacketScoreboard.Component, PacketScoreboard.NumberFormat);
+                setScore0 = (objective, holder, score, displayName, numberFormat) ->
+                        newSetScore.newInstance(holder, objective, score, displayName, numberFormat);
+            }
+            setScore = setScore0;
+            Constructor<?> newResetScore = BukkitReflection.getClass("network.protocol.game.ClientboundResetScorePacket").getConstructor(String.class, String.class);
+            removeScore = (objective, holder) -> newResetScore.newInstance(holder, objective);
+        } else if (BukkitReflection.getMinorVersion() >= 13) {
+            Class<?> actionClass = BukkitReflection.getClass("server.ServerScoreboard$Method", "server.ScoreboardServer$Action", "ScoreboardServer$Action");
+            Constructor<?> newSetScore = SetScorePacket.getConstructor(actionClass, String.class, String.class, int.class);
+            Enum<?>[] scoreboardActions = (Enum<?>[]) actionClass.getMethod("values").invoke(null);
+            setScore = (objective, holder, score, displayName, numberFormat) -> newSetScore.newInstance(scoreboardActions[0], objective, holder, score);
+            removeScore = (objective, holder) -> newSetScore.newInstance(scoreboardActions[1], objective, holder, 0);
+        } else {
+            Class<?> ScoreboardScore = BukkitReflection.getClass("ScoreboardScore");
+            Constructor<?> newResetScore = SetScorePacket.getConstructor(String.class);
+            Field SetScorePacket_SCORE = ReflectionUtils.getFields(SetScorePacket, int.class).get(0);
+            Constructor<?> newScoreboardScore = ScoreboardScore.getConstructor(PacketScoreboard.Scoreboard, PacketScoreboard.ScoreboardObjective, String.class);
+            Constructor<?> newSetScore;
+            if (BukkitReflection.getMinorVersion() >= 8) {
+                newSetScore = SetScorePacket.getConstructor(ScoreboardScore);
+            } else {
+                newSetScore = SetScorePacket.getConstructor(ScoreboardScore, int.class);
+            }
+            setScore = (objective, holder, score, displayName, numberFormat) -> {
+                Object scoreboardScore = newScoreboardScore.newInstance(
+                        PacketScoreboard.emptyScoreboard,
+                        PacketScoreboard.newScoreboardObjective.newInstance(PacketScoreboard.emptyScoreboard, objective, PacketScoreboard.IScoreboardCriteria_dummy),
+                        holder
+                );
+                Object packet;
+                if (BukkitReflection.getMinorVersion() >= 8) {
+                    packet = newSetScore.newInstance(scoreboardScore);
+                } else {
+                    packet = newSetScore.newInstance(scoreboardScore, Scoreboard.ScoreAction.CHANGE);
+                }
+                SetScorePacket_SCORE.set(packet, score);
+                return packet;
+            };
+            removeScore = (objective, holder) -> newResetScore.newInstance(holder);
+        }
+    }
+
+    /**
+     * Creates set score packet.
+     *
+     * @param   objective
+     *          Objective name
+     * @param   scoreHolder
+     *          Score holder
+     * @param   score
+     *          Score value
+     * @param   displayName
+     *          Score holder display name
+     * @param   numberFormat
+     *          Score value number format
+     * @return  Set score packet with given parameters
+     */
+    @SneakyThrows
+    public Object setScore(@NonNull String objective, @NonNull String scoreHolder, int score,
+                           @Nullable Object displayName, @Nullable Object numberFormat) {
+        return setScore.apply(objective, scoreHolder, score, displayName, numberFormat);
+    }
+
+    /**
+     * Creates reset score packet.
+     *
+     * @param   objective
+     *          Objective name
+     * @param   scoreHolder
+     *          Score holder
+     * @return  Reset score packet with given parameters.
+     */
+    @SneakyThrows
+    public Object removeScore(@NonNull String objective, @NonNull String scoreHolder) {
+        return removeScore.apply(objective, scoreHolder);
+    }
+}

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/scoreboard/packet/TeamPacketData.java

@@ -0,0 +1,309 @@
+package me.neznamy.tab.platforms.bukkit.scoreboard.packet;
+
+import lombok.Getter;
+import lombok.NonNull;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
+import me.neznamy.tab.shared.chat.EnumChatFormat;
+import me.neznamy.tab.shared.platform.Scoreboard;
+import me.neznamy.tab.shared.platform.Scoreboard.TeamAction;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.BiConsumerWithException;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.Collection;
+
+/**
+ * Class storing all team related fields and methods.
+ */
+@SuppressWarnings("unchecked")
+public class TeamPacketData {
+
+    /** First version with modern team data using components */
+    private final int MODERN_TEAM_DATA_VERSION = 13;
+
+    /** First version with static constructor-like methods */
+    private final int STATIC_CONSTRUCTOR_VERSION = 17;
+
+    private final Object emptyScoreboard;
+    @Getter private final Class<?> TeamPacketClass;
+    private Constructor<?> newTeamPacket;
+    private final Constructor<?> newScoreboardTeam;
+    private Method TeamPacketConstructor_of;
+    private Method TeamPacketConstructor_ofBoolean;
+    private final Field TeamPacket_NAME;
+    private final Field TeamPacket_ACTION;
+    private final Field TeamPacket_PLAYERS;
+    private final Method ScoreboardTeam_getPlayerNameSet;
+    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 BiConsumerWithException<Object, Scoreboard.NameVisibility> setVisibility = (team, visibility) -> {};
+    private BiConsumerWithException<Object, Scoreboard.CollisionRule> setCollision = (team, collision) -> {};
+
+    /**
+     * Constructs new instance and loads all required NMS classes, fields and methods.
+     * If anything fails, exception is thrown.
+     *
+     * @throws  ReflectiveOperationException
+     *          If anything fails
+     */
+    public TeamPacketData() throws ReflectiveOperationException {
+        int minorVersion = BukkitReflection.getMinorVersion();
+        Class<?> Scoreboard = BukkitReflection.getClass("world.scores.Scoreboard", "Scoreboard");
+        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
+        );
+        emptyScoreboard = Scoreboard.getConstructor().newInstance();
+        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) loadVisibility(scoreboardTeam);
+        if (minorVersion >= 9) loadCollision(scoreboardTeam);
+        if (minorVersion >= MODERN_TEAM_DATA_VERSION) {
+            Class<?> Component = BukkitReflection.getClass("network.chat.Component", "network.chat.IChatBaseComponent", "IChatBaseComponent");
+            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 >= STATIC_CONSTRUCTOR_VERSION) {
+            TeamPacketConstructor_of = ReflectionUtils.getOnlyMethod(TeamPacketClass, TeamPacketClass, scoreboardTeam);
+            TeamPacketConstructor_ofBoolean = ReflectionUtils.getOnlyMethod(TeamPacketClass, TeamPacketClass, scoreboardTeam, boolean.class);
+        } else {
+            newTeamPacket = TeamPacketClass.getConstructor(scoreboardTeam, int.class);
+        }
+    }
+
+    @SneakyThrows
+    private void loadVisibility(@NonNull Class<?> scoreboardTeam) {
+        Class<?> enumNameTagVisibility = BukkitReflection.getClass(
+                "world.scores.Team$Visibility", // Mojang mapped
+                "world.scores.ScoreboardTeamBase$EnumNameTagVisibility", // Bukkit 1.17+
+                "ScoreboardTeamBase$EnumNameTagVisibility", // Bukkit 1.8.1 - 1.16.5
+                "EnumNameTagVisibility" // Bukkit 1.8.0
+        );
+        Enum<?>[] nameVisibilities = (Enum<?>[]) enumNameTagVisibility.getMethod("values").invoke(null);
+        Method setNameTagVisibility = ReflectionUtils.getMethod(
+                scoreboardTeam,
+                new String[]{"setNameTagVisibility", "a", "m_83346_"}, // {1.8.1+, 1.8 & 1.18+, Mohist 1.18.2}
+                enumNameTagVisibility
+        );
+        setVisibility = (team, visibility) -> setNameTagVisibility.invoke(team, nameVisibilities[visibility.ordinal()]);
+    }
+
+    @SneakyThrows
+    private void loadCollision(@NonNull Class<?> scoreboardTeam) {
+        Class<?> enumTeamPush = BukkitReflection.getClass("world.scores.Team$CollisionRule",
+                "world.scores.ScoreboardTeamBase$EnumTeamPush", "ScoreboardTeamBase$EnumTeamPush");
+        Enum<?>[] collisionRules = (Enum<?>[]) enumTeamPush.getMethod("values").invoke(null);
+        Method setCollisionRule = ReflectionUtils.getOnlyMethod(scoreboardTeam, void.class, enumTeamPush);
+        setCollision = (team, collision) -> setCollisionRule.invoke(team, collisionRules[collision.ordinal()]);
+    }
+
+    /**
+     * Creates team register packet with specified parameters.
+     *
+     * @param   team
+     *          Team to register
+     * @param   prefix
+     *          Team prefix for 1.12-
+     * @param   prefixComponent
+     *          Team prefix component for 1.13+
+     * @param   suffix
+     *          Team suffix for 1.12-
+     * @param   suffixComponent
+     *          Team suffix component for 1.13+
+     * @param   visibility
+     *          Nametag visibility rule
+     * @param   collision
+     *          Player collision rule
+     * @param   players
+     *          Team members
+     * @param   options
+     *          Team flags
+     * @param   color
+     *          Team color for 1.13+
+     * @return  Register team packet with specified parameters
+     */
+    @SneakyThrows
+    public Object registerTeam(@NonNull Object team, @NonNull String prefix, @Nullable Object prefixComponent,
+                               @NonNull String suffix, @Nullable Object suffixComponent,
+                               @NonNull Scoreboard.NameVisibility visibility, @NonNull Scoreboard.CollisionRule collision,
+                               @NonNull Collection<String> players, int options, @NonNull EnumChatFormat color) {
+        updateTeamData(team, prefix, prefixComponent, suffix, suffixComponent, visibility, collision, options, color);
+        ((Collection<String>) ScoreboardTeam_getPlayerNameSet.invoke(team)).addAll(players);
+        if (BukkitReflection.getMinorVersion() >= STATIC_CONSTRUCTOR_VERSION) {
+            return TeamPacketConstructor_ofBoolean.invoke(null, team, true);
+        } else {
+            return newTeamPacket.newInstance(team, TeamAction.CREATE);
+        }
+    }
+
+    /**
+     * Creates unregister team packet with given team.
+     *
+     * @param   team
+     *          Team to unregister
+     * @return  Packet for unregistering team
+     */
+    @SneakyThrows
+    public Object unregisterTeam(@NonNull Object team) {
+        if (BukkitReflection.getMinorVersion() >= STATIC_CONSTRUCTOR_VERSION) {
+            return TeamPacketConstructor_of.invoke(null, team);
+        } else {
+            return newTeamPacket.newInstance(team, TeamAction.REMOVE);
+        }
+    }
+
+    /**
+     * Creates team update packet with specified parameters.
+     *
+     * @param   team
+     *          Team to update
+     * @param   prefix
+     *          Team prefix for 1.12-
+     * @param   prefixComponent
+     *          Team prefix component for 1.13+
+     * @param   suffix
+     *          Team suffix for 1.12-
+     * @param   suffixComponent
+     *          Team suffix component for 1.13+
+     * @param   visibility
+     *          Nametag visibility rule
+     * @param   collision
+     *          Player collision rule
+     * @param   options
+     *          Team flags
+     * @param   color
+     *          Team color for 1.13+
+     * @return  Update team packet with specified parameters
+     */
+    @SneakyThrows
+    public Object updateTeam(@NonNull Object team, @NonNull String prefix, @Nullable Object prefixComponent,
+                             @NonNull String suffix, @Nullable Object suffixComponent,
+                             @NonNull Scoreboard.NameVisibility visibility, @NonNull Scoreboard.CollisionRule collision,
+                             int options, @NonNull EnumChatFormat color) {
+        updateTeamData(team, prefix, prefixComponent, suffix, suffixComponent, visibility, collision, options, color);
+        if (BukkitReflection.getMinorVersion() >= STATIC_CONSTRUCTOR_VERSION) {
+            return TeamPacketConstructor_ofBoolean.invoke(null, team, false);
+        } else {
+            return newTeamPacket.newInstance(team, TeamAction.UPDATE);
+        }
+    }
+
+    /**
+     * Updates team properties.
+     *
+     * @param   team
+     *          Team to update
+     * @param   prefix
+     *          Team prefix for 1.12-
+     * @param   prefixComponent
+     *          Team prefix component for 1.13+
+     * @param   suffix
+     *          Team suffix for 1.12-
+     * @param   suffixComponent
+     *          Team suffix component for 1.13+
+     * @param   visibility
+     *          Nametag visibility rule
+     * @param   collision
+     *          Player collision rule
+     * @param   options
+     *          Team flags
+     * @param   color
+     *          Team color for 1.13+
+     */
+    @SneakyThrows
+    private void updateTeamData(@NonNull Object team, @NonNull String prefix, @Nullable Object prefixComponent,
+                                  @NonNull String suffix, @Nullable Object suffixComponent,
+                                  @NonNull Scoreboard.NameVisibility visibility, @NonNull Scoreboard.CollisionRule collision,
+                                  int options, @NonNull EnumChatFormat color) {
+        ScoreboardTeam_setAllowFriendlyFire.invoke(team, (options & 0x1) > 0);
+        ScoreboardTeam_setCanSeeFriendlyInvisibles.invoke(team, (options & 0x2) > 0);
+        if (BukkitReflection.getMinorVersion() >= MODERN_TEAM_DATA_VERSION) {
+            ScoreboardTeam_setPrefix.invoke(team, prefixComponent);
+            ScoreboardTeam_setSuffix.invoke(team, suffixComponent);
+            ScoreboardTeam_setColor.invoke(team, chatFormats[color.ordinal()]);
+        } else {
+            ScoreboardTeam_setPrefix.invoke(team, prefix);
+            ScoreboardTeam_setSuffix.invoke(team, suffix);
+        }
+        setVisibility.accept(team, visibility);
+        setCollision.accept(team, collision);
+    }
+
+    /**
+     * Creates a team with given name.
+     *
+     * @param   name
+     *          Team name
+     * @return  Team with specified name
+     */
+    @SneakyThrows
+    public Object createTeam(@NonNull String name) {
+        return newScoreboardTeam.newInstance(emptyScoreboard, name);
+    }
+
+    /**
+     * Checks if packet is team packet and removes all real players from team
+     * if sent by other plugins and anti-override is fully active on a player.
+     *
+     * @param   player
+     *          Player who received the packet
+     * @param   packet
+     *          Received packet
+     */
+    @SneakyThrows
+    public void onPacketSend(@NonNull TabPlayer player, @NonNull Object packet) {
+        if (!TeamPacketClass.isInstance(packet)) return;
+        int action = TeamPacket_ACTION.getInt(packet);
+        if (action == TeamAction.REMOVE || action == TeamAction.UPDATE) return;
+        TeamPacket_PLAYERS.set(packet, player.getScoreboard().onTeamPacket(
+                action, (String) TeamPacket_NAME.get(packet), (Collection<String>) TeamPacket_PLAYERS.get(packet)));
+    }
+}

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

@@ -0,0 +1,64 @@
+package me.neznamy.tab.platforms.bukkit.tablist;
+
+import lombok.NonNull;
+import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
+import me.neznamy.tab.shared.chat.TabComponent;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.UUID;
+
+/**
+ * TabList handler using the almighty Bukkit API.
+ */
+public class BukkitTabList extends TabListBase<String> {
+
+    /**
+     * Constructs new instance with given player.
+     *
+     * @param   player
+     *          Player this tablist will belong to.
+     */
+    public BukkitTabList(@NonNull BukkitTabPlayer player) {
+        super(player);
+    }
+
+    @Override
+    public void removeEntry(@NonNull UUID entry) {
+        // Shrug
+    }
+
+    @Override
+    @SuppressWarnings("deprecation")
+    public void updateDisplayName0(@NonNull UUID entry, @Nullable String displayName) {
+        Player p = Bukkit.getPlayer(entry);
+        if (p == null) return;
+        p.setPlayerListName(displayName);
+    }
+
+    @Override
+    public void updateLatency(@NonNull UUID entry, int latency) {
+        // Shrug
+    }
+
+    @Override
+    public void updateGameMode(@NonNull UUID entry, int gameMode) {
+        // Shrug
+    }
+
+    @Override
+    public void updateListed(@NonNull UUID entry, boolean listed) {
+        // Shrug
+    }
+
+    @Override
+    public void addEntry0(@NonNull UUID id, @NonNull String name, @Nullable Skin skin, boolean listed, int latency, int gameMode, @Nullable String displayName) {
+        // Shrug
+    }
+
+    @Override
+    public String toComponent(@NonNull TabComponent component) {
+        return player.getPlatform().toBukkitFormat(component, true);
+    }
+}

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

@@ -0,0 +1,65 @@
+package me.neznamy.tab.platforms.bukkit.tablist;
+
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
+import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
+import me.neznamy.tab.platforms.bukkit.nms.ComponentConverter;
+import me.neznamy.tab.platforms.bukkit.nms.PacketSender;
+import me.neznamy.tab.shared.util.BiFunctionWithException;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import org.jetbrains.annotations.NotNull;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+
+/**
+ * Header/footer sender that uses NMS to send packets. Available
+ * on all versions since 1.8 when the feature was added into the game.
+ */
+public class PacketHeaderFooter {
+
+    private final PacketSender packetSender = new PacketSender();
+    private final BiFunctionWithException<Object, Object, Object> createPacket;
+
+    /**
+     * Constructs new instance and loads all NMS content. Throws exception if something went wrong.
+     *
+     * @throws  ReflectiveOperationException
+     *          If something went wrong
+     */
+    public PacketHeaderFooter() throws ReflectiveOperationException {
+        Class<?> Component = BukkitReflection.getClass("network.chat.Component", "network.chat.IChatBaseComponent", "IChatBaseComponent");
+        Class<?> HeaderFooterClass = BukkitReflection.getClass("network.protocol.game.ClientboundTabListPacket",
+                "network.protocol.game.PacketPlayOutPlayerListHeaderFooter", "PacketPlayOutPlayerListHeaderFooter");
+        ComponentConverter.ensureAvailable();
+        if (BukkitReflection.getMinorVersion() >= 17) {
+            Constructor<?> newHeaderFooter = HeaderFooterClass.getConstructor(Component, Component);
+            createPacket = newHeaderFooter::newInstance;
+        } else {
+            Constructor<?> newHeaderFooter = HeaderFooterClass.getConstructor();
+            Field HEADER = ReflectionUtils.getFields(HeaderFooterClass, Component).get(0);
+            Field FOOTER = ReflectionUtils.getFields(HeaderFooterClass, Component).get(1);
+            createPacket = (header, footer) -> {
+                Object packet = newHeaderFooter.newInstance();
+                HEADER.set(packet, header);
+                FOOTER.set(packet, footer);
+                return packet;
+            };
+        }
+    }
+
+    /**
+     * Sends header/footer to player.
+     *
+     * @param   player
+     *          Player to send header/footer to.
+     * @param   header
+     *          Header to use.
+     * @param   footer
+     *          Footer to use.
+     */
+    @SneakyThrows
+    public void set(@NotNull BukkitTabPlayer player, @NotNull Object header, @NotNull Object footer) {
+        packetSender.sendPacket(player.getPlayer(), createPacket.apply(header, footer));
+    }
+}

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/tablist/PacketTabList1193.java

@@ -0,0 +1,163 @@
+package me.neznamy.tab.platforms.bukkit.tablist;
+
+import com.mojang.authlib.GameProfile;
+import lombok.NonNull;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
+import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.util.*;
+
+/**
+ * TabList handler for 1.19.3+ servers using packets.
+ */
+@SuppressWarnings({"unchecked", "rawtypes"})
+public class PacketTabList1193 extends PacketTabList18 {
+
+    /** Map of actions to prevent creating new EnumSet on each packet send */
+    private static final Map<Action, EnumSet<?>> actionToEnumSet = new EnumMap<>(Action.class);
+
+    private static Enum actionAddPlayer;
+    private static Enum actionUpdateDisplayName;
+    private static Enum actionUpdateLatency;
+
+    private static Constructor<?> newRemovePacket;
+
+    private static Field PlayerInfoData_UUID;
+    private static Field PlayerInfoData_GameMode;
+    private static Field PlayerInfoData_Listed;
+    private static Field PlayerInfoData_RemoteChatSession;
+
+    /**
+     * Constructs new instance with given player.
+     *
+     * @param   player
+     *          Player this tablist will belong to.
+     */
+    public PacketTabList1193(@NonNull BukkitTabPlayer player) {
+        super(player);
+    }
+
+    /**
+     * Attempts to load all required NMS classes, fields and methods.
+     * If anything fails, throws an exception.
+     *
+     * @throws  ReflectiveOperationException
+     *          If something goes wrong
+     */
+    public static void loadNew() throws ReflectiveOperationException {
+        Class<?> IChatBaseComponent = BukkitReflection.getClass("network.chat.Component", "network.chat.IChatBaseComponent", "IChatBaseComponent");
+        Class<?> RemoteChatSession$Data = BukkitReflection.getClass("network.chat.RemoteChatSession$Data", "network.chat.RemoteChatSession$a");
+        Class<Enum> EnumGamemodeClass = (Class<Enum>) BukkitReflection.getClass("world.level.GameType", "world.level.EnumGamemode");
+        ActionClass = (Class<Enum>) BukkitReflection.getClass(
+                "network.protocol.game.ClientboundPlayerInfoUpdatePacket$Action", // Mojang
+                "network.protocol.game.ClientboundPlayerInfoUpdatePacket$a" // Bukkit
+        );
+        PlayerInfoClass = BukkitReflection.getClass("network.protocol.game.ClientboundPlayerInfoUpdatePacket");
+        Class<?> playerInfoDataClass = BukkitReflection.getClass(
+                "network.protocol.game.ClientboundPlayerInfoUpdatePacket$Entry", // Mojang
+                "network.protocol.game.ClientboundPlayerInfoUpdatePacket$b" // Bukkit
+        );
+
+        newPlayerInfo = PlayerInfoClass.getConstructor(EnumSet.class, Collection.class);
+        ACTION = ReflectionUtils.getOnlyField(PlayerInfoClass, EnumSet.class);
+
+        loadSharedContent(playerInfoDataClass, EnumGamemodeClass);
+
+        newPlayerInfoData = playerInfoDataClass.getConstructor(UUID.class, GameProfile.class, boolean.class, int.class, EnumGamemodeClass, IChatBaseComponent, RemoteChatSession$Data);
+
+        PlayerInfoData_Listed = ReflectionUtils.getOnlyField(playerInfoDataClass, boolean.class);
+        PlayerInfoData_GameMode = ReflectionUtils.getOnlyField(playerInfoDataClass, EnumGamemodeClass);
+        PlayerInfoData_RemoteChatSession = ReflectionUtils.getOnlyField(playerInfoDataClass, RemoteChatSession$Data);
+        PlayerInfoData_UUID = ReflectionUtils.getOnlyField(playerInfoDataClass, UUID.class);
+        newRemovePacket = BukkitReflection.getClass("network.protocol.game.ClientboundPlayerInfoRemovePacket").getConstructor(List.class);
+
+        actionAddPlayer = Enum.valueOf(ActionClass, Action.ADD_PLAYER.name());
+        actionUpdateDisplayName = Enum.valueOf(ActionClass, Action.UPDATE_DISPLAY_NAME.name());
+        actionUpdateLatency = Enum.valueOf(ActionClass, Action.UPDATE_LATENCY.name());
+
+        actionToEnumSet.put(Action.ADD_PLAYER, EnumSet.allOf(ActionClass));
+        actionToEnumSet.put(Action.UPDATE_GAME_MODE, EnumSet.of(Enum.valueOf(ActionClass, Action.UPDATE_GAME_MODE.name())));
+        actionToEnumSet.put(Action.UPDATE_DISPLAY_NAME, EnumSet.of(actionUpdateDisplayName));
+        actionToEnumSet.put(Action.UPDATE_LATENCY, EnumSet.of(actionUpdateLatency));
+        actionToEnumSet.put(Action.UPDATE_LISTED, EnumSet.of(Enum.valueOf(ActionClass, Action.UPDATE_LISTED.name())));
+    }
+
+    @Override
+    @SneakyThrows
+    public void removeEntry(@NonNull UUID entry) {
+        packetSender.sendPacket(player.getPlayer(), newRemovePacket.newInstance(Collections.singletonList(entry)));
+    }
+
+    @Override
+    public void updateListed(@NonNull UUID entry, boolean listed) {
+        packetSender.sendPacket(player.getPlayer(),
+                createPacket(Action.UPDATE_LISTED, entry, "", null, listed, 0, 0, null));
+    }
+
+    @SneakyThrows
+    @NonNull
+    @Override
+    public Object createPacket(@NonNull Action action, @NonNull UUID id, @NonNull String name, @Nullable Skin skin,
+                               boolean listed, int latency, int gameMode, @Nullable Object displayName) {
+        Object packet = newPlayerInfo.newInstance(actionToEnumSet.get(action), Collections.emptyList());
+        PLAYERS.set(packet, Collections.singletonList(newPlayerInfoData.newInstance(
+                id,
+                action == Action.ADD_PLAYER ? createProfile(id, name, skin) : null,
+                listed,
+                latency,
+                gameModes[gameMode],
+                displayName,
+                null
+        )));
+        return packet;
+    }
+
+    @Override
+    @SneakyThrows
+    public void onPacketSend(@NonNull Object packet) {
+        if (!(PlayerInfoClass.isInstance(packet))) return;
+        EnumSet<?> actions = (EnumSet<?>) ACTION.get(packet);
+        List<Object> updatedList = new ArrayList<>();
+        boolean rewritePacket = false;
+        for (Object nmsData : (List<?>) PLAYERS.get(packet)) {
+            boolean rewriteEntry = false;
+            UUID id = (UUID) PlayerInfoData_UUID.get(nmsData);
+            GameProfile profile = (GameProfile) PlayerInfoData_Profile.get(nmsData);
+            Object displayName = PlayerInfoData_DisplayName.get(nmsData);
+            int latency = PlayerInfoData_Latency.getInt(nmsData);
+            if (actions.contains(actionUpdateDisplayName)) {
+                Object expectedName = getExpectedDisplayName(id);
+                if (expectedName != null && expectedName != displayName) {
+                    displayName = expectedName;
+                    rewriteEntry = rewritePacket = true;
+                }
+            }
+            if (actions.contains(actionUpdateLatency)) {
+                int newLatency = TAB.getInstance().getFeatureManager().onLatencyChange(player, id, latency);
+                if (newLatency != latency) {
+                    latency = newLatency;
+                    rewriteEntry = rewritePacket = true;
+                }
+            }
+            if (actions.contains(actionAddPlayer)) {
+                TAB.getInstance().getFeatureManager().onEntryAdd(player, id, profile.getName());
+            }
+            // 1.19.3 is using records, which do not allow changing final fields, need to rewrite the list entirely
+            updatedList.add(rewriteEntry ? newPlayerInfoData.newInstance(
+                    id,
+                    profile,
+                    PlayerInfoData_Listed.getBoolean(nmsData),
+                    latency,
+                    PlayerInfoData_GameMode.get(nmsData),
+                    displayName,
+                    PlayerInfoData_RemoteChatSession.get(nmsData)) : nmsData);
+        }
+        if (rewritePacket) PLAYERS.set(packet, updatedList);
+    }
+}

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/tablist/PacketTabList17.java

@@ -0,0 +1,123 @@
+package me.neznamy.tab.platforms.bukkit.tablist;
+
+import lombok.NonNull;
+import lombok.SneakyThrows;
+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.Limitations;
+import me.neznamy.tab.shared.chat.TabComponent;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import me.neznamy.tab.shared.util.TriFunctionWithException;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+/**
+ * TabList handler for 1.7- servers using packets.
+ */
+public class PacketTabList17 extends TabListBase<String> {
+
+    private static TriFunctionWithException<String, Boolean, Integer, Object> newPacket;
+    private static PacketSender packetSender;
+
+    /** Because entries are identified by names and not uuids on 1.7- */
+    @NonNull
+    private final Map<UUID, String> userNames = new HashMap<>();
+
+    @NonNull
+    private final Map<UUID, String> displayNames = new HashMap<>();
+
+    /**
+     * Constructs new instance with given player.
+     *
+     * @param   player
+     *          Player this tablist will belong to.
+     */
+    public PacketTabList17(@NonNull BukkitTabPlayer player) {
+        super(player);
+    }
+
+    /**
+     * Attempts to load all required NMS classes, fields and methods.
+     * If anything fails, throws an exception.
+     *
+     * @throws  ReflectiveOperationException
+     *          If something goes wrong
+     */
+    public static void load() throws ReflectiveOperationException {
+        Class<?> PlayerInfoClass = BukkitReflection.getClass("PacketPlayOutPlayerInfo", "Packet201PlayerInfo");
+        try {
+            Constructor<?> newPlayerInfo = PlayerInfoClass.getConstructor(String.class, boolean.class, int.class);
+            newPacket = newPlayerInfo::newInstance;
+        } catch (NoSuchMethodException e) {
+            // 1.7.10 spigot with protocol hack
+            Constructor<?> newPlayerInfo = PlayerInfoClass.getConstructor();
+            Field USERNAME = ReflectionUtils.getField(PlayerInfoClass, "username");
+            Field ACTION = ReflectionUtils.getField(PlayerInfoClass, "action");
+            Field PING = ReflectionUtils.getField(PlayerInfoClass, "ping");
+            newPacket = (name, addOrUpdate, latency) -> {
+                Object packet = newPlayerInfo.newInstance();
+                USERNAME.set(packet, name);
+                ACTION.set(packet, addOrUpdate ? 3 : 4);
+                PING.set(packet, latency);
+                return packet;
+            };
+        }
+        packetSender = new PacketSender();
+    }
+
+    @Override
+    @SneakyThrows
+    public void removeEntry(@NonNull UUID entry) {
+        if (!displayNames.containsKey(entry)) return; // Entry not tracked by TAB
+        packetSender.sendPacket(player.getPlayer(), newPacket.apply(displayNames.get(entry), false, 0));
+        userNames.remove(entry);
+        displayNames.remove(entry);
+    }
+
+    @Override
+    @SneakyThrows
+    public void updateDisplayName0(@NonNull UUID entry, @Nullable String displayName) {
+        if (!displayNames.containsKey(entry)) return; // Entry not tracked by TAB
+        packetSender.sendPacket(player.getPlayer(), newPacket.apply(displayNames.get(entry), false, 0));
+        addEntry0(entry, userNames.get(entry), null, false, 0, 0, displayName);
+    }
+
+    @Override
+    @SneakyThrows
+    public void updateLatency(@NonNull UUID entry, int latency) {
+        if (!displayNames.containsKey(entry)) return; // Entry not tracked by TAB
+        packetSender.sendPacket(player.getPlayer(), newPacket.apply(displayNames.get(entry), true, latency));
+    }
+
+    @Override
+    public void updateGameMode(@NonNull UUID entry, int gameMode) {
+        // Added in 1.8
+    }
+
+    @Override
+    public void updateListed(@NonNull UUID entry, boolean listed) {
+        // Added in 1.19.3
+    }
+
+    @Override
+    @SneakyThrows
+    public void addEntry0(@NonNull UUID id, @NonNull String name, @Nullable Skin skin, boolean listed, int latency, int gameMode, @Nullable String displayName) {
+        String display = displayName == null ? name : displayName;
+        packetSender.sendPacket(player.getPlayer(), newPacket.apply(display, true, latency));
+        userNames.put(id, name);
+        displayNames.put(id, display);
+    }
+
+    @Override
+    public String toComponent(@NonNull TabComponent component) {
+        String name = component.toLegacyText();
+        if (name.length() > Limitations.MAX_DISPLAY_NAME_LENGTH_1_7) name = name.substring(0, Limitations.MAX_DISPLAY_NAME_LENGTH_1_7);
+        return name;
+    }
+}

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/tablist/PacketTabList18.java

@@ -0,0 +1,227 @@
+package me.neznamy.tab.platforms.bukkit.tablist;
+
+import com.mojang.authlib.GameProfile;
+import com.mojang.authlib.properties.Property;
+import lombok.NonNull;
+import lombok.Setter;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
+import me.neznamy.tab.platforms.bukkit.BukkitUtils;
+import me.neznamy.tab.platforms.bukkit.nms.ComponentConverter;
+import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
+import me.neznamy.tab.platforms.bukkit.nms.PacketSender;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.platform.TabList;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.util.*;
+
+/**
+ * TabList handler for 1.8 - 1.19.2 servers using packets.
+ */
+@Setter
+@SuppressWarnings({"unchecked", "rawtypes"})
+public class PacketTabList18 extends TabListBase<Object> {
+
+    protected static Class<?> PlayerInfoClass;
+    protected static Constructor<?> newPlayerInfo;
+    protected static Field ACTION;
+    protected static Field PLAYERS;
+    protected static Class<Enum> ActionClass;
+
+    protected static Constructor<?> newPlayerInfoData;
+    protected static Field PlayerInfoData_Profile;
+    protected static Field PlayerInfoData_Latency;
+    protected static Field PlayerInfoData_DisplayName;
+
+    protected static Object[] gameModes;
+
+    protected static PacketSender packetSender;
+
+    /**
+     * Constructs new instance with given player.
+     *
+     * @param   player
+     *          Player this tablist will belong to.
+     */
+    public PacketTabList18(@NonNull BukkitTabPlayer player) {
+        super(player);
+    }
+
+    /**
+     * Attempts to load all required NMS classes, fields and methods.
+     * If anything fails, throws an exception.
+     *
+     * @throws  ReflectiveOperationException
+     *          If something goes wrong
+     */
+    public static void load() throws ReflectiveOperationException {
+        Class<Enum> EnumGamemodeClass = (Class<Enum>) BukkitReflection.getClass("world.level.GameType",
+                "world.level.EnumGamemode", "EnumGamemode", "WorldSettings$EnumGamemode");
+        ActionClass = (Class<Enum>) BukkitReflection.getClass(
+                "network.protocol.game.ClientboundPlayerInfoPacket$Action", // Mojang 1.17 - 1.19.2
+                "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.ClientboundPlayerInfoPacket$PlayerUpdate", // Mojang 1.17 - 1.19.2
+                "network.protocol.game.PacketPlayOutPlayerInfo$PlayerInfoData", // Bukkit 1.17 - 1.19.2
+                "PacketPlayOutPlayerInfo$PlayerInfoData", // Bukkit 1.8.1 - 1.16.5
+                "PlayerInfoData" // Bukkit 1.8.0
+        );
+
+        Class<?> classType = BukkitReflection.getMinorVersion() >= 17 ? Collection.class : Iterable.class;
+        newPlayerInfo = PlayerInfoClass.getConstructor(ActionClass, classType);
+        ACTION = ReflectionUtils.getOnlyField(PlayerInfoClass, ActionClass);
+
+        loadSharedContent(playerInfoDataClass, EnumGamemodeClass);
+
+        newPlayerInfoData = playerInfoDataClass.getConstructors()[0]; // #1105, a specific 1.8.8 fork has 2 constructors
+    }
+
+    protected static void loadSharedContent(Class<?> infoData, Class<Enum> gameMode) throws ReflectiveOperationException {
+        Class<?> IChatBaseComponent = BukkitReflection.getClass("network.chat.Component", "network.chat.IChatBaseComponent", "IChatBaseComponent");
+        PLAYERS = ReflectionUtils.getOnlyField(PlayerInfoClass, List.class);
+        PlayerInfoData_Profile = ReflectionUtils.getOnlyField(infoData, GameProfile.class);
+        PlayerInfoData_Latency = ReflectionUtils.getOnlyField(infoData, int.class);
+        PlayerInfoData_DisplayName = ReflectionUtils.getOnlyField(infoData, IChatBaseComponent);
+        gameModes = new Object[] {
+                Enum.valueOf(gameMode, "SURVIVAL"),
+                Enum.valueOf(gameMode, "CREATIVE"),
+                Enum.valueOf(gameMode, "ADVENTURE"),
+                Enum.valueOf(gameMode, "SPECTATOR")
+        };
+        packetSender = new PacketSender();
+        ComponentConverter.ensureAvailable();
+        try {
+            skinData = new SkinData();
+        } catch (Exception e) {
+            BukkitUtils.compatibilityError(e, "getting player's game profile", null,
+                    "Player skins not working in layout feature");
+        }
+    }
+
+    @Override
+    public void removeEntry(@NonNull UUID entry) {
+        packetSender.sendPacket(player.getPlayer(),
+                createPacket(Action.REMOVE_PLAYER, entry, "", null, false, 0, 0, null));
+    }
+
+    @Override
+    public void updateDisplayName0(@NonNull UUID entry, @Nullable Object displayName) {
+        packetSender.sendPacket(player.getPlayer(),
+                createPacket(Action.UPDATE_DISPLAY_NAME, entry, "", null, false, 0, 0, displayName));
+    }
+
+    @Override
+    public void updateLatency(@NonNull UUID entry, int latency) {
+        packetSender.sendPacket(player.getPlayer(),
+                createPacket(Action.UPDATE_LATENCY, entry, "", null, false, latency, 0, null));
+    }
+
+    @Override
+    public void updateGameMode(@NonNull UUID entry, int gameMode) {
+        packetSender.sendPacket(player.getPlayer(),
+                createPacket(Action.UPDATE_GAME_MODE, entry, "", null, false, 0, gameMode, null));
+    }
+
+    @Override
+    public void updateListed(@NonNull UUID entry, boolean listed) {
+        // Added in 1.19.3
+    }
+
+    @Override
+    public void addEntry0(@NonNull UUID id, @NonNull String name, @Nullable Skin skin, boolean listed, int latency, int gameMode, @Nullable Object displayName) {
+        packetSender.sendPacket(player.getPlayer(),
+                createPacket(Action.ADD_PLAYER, id, name, skin, listed, latency, gameMode, displayName));
+    }
+
+    /**
+     * Creates packet from given parameters.
+     *
+     * @param   action
+     *          Packet action
+     * @param   id
+     *          Entry UUID
+     * @param   name
+     *          Entry name
+     * @param   skin
+     *          Entry skin
+     * @param   listed
+     *          Whether entry should be listed or not
+     * @param   latency
+     *          Entry latency
+     * @param   gameMode
+     *          Entry game mode
+     * @param   displayName
+     *          Entry display name
+     * @return  Packet from given parameters
+     */
+    @SneakyThrows
+    @NonNull
+    public Object createPacket(@NonNull Action action, @NonNull UUID id, @NonNull String name, @Nullable Skin skin,
+                               boolean listed, int latency, int gameMode, @Nullable Object displayName) {
+        Object packet = newPlayerInfo.newInstance(Enum.valueOf(ActionClass, action.name()), Collections.emptyList());
+        List<Object> parameters = new ArrayList<>();
+        if (newPlayerInfoData.getParameterTypes()[0] == PlayerInfoClass) {
+            parameters.add(packet);
+        }
+        parameters.add(createProfile(id, name, skin));
+        parameters.add(latency);
+        parameters.add(gameModes[gameMode]);
+        parameters.add(displayName);
+        if (BukkitReflection.getMinorVersion() >= 19) parameters.add(null);
+        PLAYERS.set(packet, Collections.singletonList(newPlayerInfoData.newInstance(parameters.toArray())));
+        return packet;
+    }
+
+    /**
+     * Creates GameProfile from given parameters.
+     *
+     * @param   id
+     *          Profile ID
+     * @param   name
+     *          Profile name
+     * @param   skin
+     *          Player skin
+     * @return  GameProfile from given parameters
+     */
+    @NonNull
+    public GameProfile createProfile(@NonNull UUID id, @NonNull String name, @Nullable Skin skin) {
+        GameProfile profile = new GameProfile(id, name);
+        if (skin != null) {
+            profile.getProperties().put(TabList.TEXTURES_PROPERTY,
+                    new Property(TabList.TEXTURES_PROPERTY, skin.getValue(), skin.getSignature()));
+        }
+        return profile;
+    }
+
+    @Override
+    @SneakyThrows
+    public void onPacketSend(@NonNull Object packet) {
+        if (!(PlayerInfoClass.isInstance(packet))) return;
+        String action = ACTION.get(packet).toString();
+        for (Object nmsData : (List<?>) PLAYERS.get(packet)) {
+            GameProfile profile = (GameProfile) PlayerInfoData_Profile.get(nmsData);
+            UUID id = profile.getId();
+            if (action.equals(Action.UPDATE_DISPLAY_NAME.name()) || action.equals(Action.ADD_PLAYER.name())) {
+                Object expectedName = getExpectedDisplayName(id);
+                if (expectedName != null) PlayerInfoData_DisplayName.set(nmsData, expectedName);
+            }
+            if (action.equals(Action.UPDATE_LATENCY.name()) || action.equals(Action.ADD_PLAYER.name())) {
+                int latency = TAB.getInstance().getFeatureManager().onLatencyChange(player, id, PlayerInfoData_Latency.getInt(nmsData));
+                PlayerInfoData_Latency.set(nmsData, latency);
+            }
+            if (action.equals(Action.ADD_PLAYER.name())) {
+                TAB.getInstance().getFeatureManager().onEntryAdd(player, id, profile.getName());
+            }
+        }
+    }
+}

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/tablist/SkinData.java

@@ -0,0 +1,60 @@
+package me.neznamy.tab.platforms.bukkit.tablist;
+
+import com.mojang.authlib.GameProfile;
+import com.mojang.authlib.properties.Property;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
+import me.neznamy.tab.shared.platform.TabList;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.reflect.Method;
+import java.util.Collection;
+
+/**
+ * Class for getting skin of players.
+ */
+public class SkinData {
+
+    private final Method getHandle = BukkitReflection.getBukkitClass("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
+    private final Method getProfile = ReflectionUtils.getMethods(BukkitReflection.getClass(
+            "world.entity.player.Player", "world.entity.player.EntityHuman", "EntityHuman"), GameProfile.class).get(0);
+
+    /**
+     * Constructs new instance and loads NMS fields. If it fails, throws an Exception.
+     *
+     * @throws  ReflectiveOperationException
+     *          If something goes wrong
+     */
+    public SkinData() throws ReflectiveOperationException {}
+
+    /**
+     * Returns player's skin. If server is in offline mode, returns {@code null}.
+     *
+     * @param   player
+     *          Player to get skin of
+     * @return  Player's skin or {@code null}.
+     */
+    @Nullable
+    @SneakyThrows
+    public TabList.Skin getSkin(@NotNull Player player) {
+        Collection<Property> col = ((GameProfile) getProfile.invoke(getHandle.invoke(player))).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());
+        }
+    }
+}

bukkit/src/main/java/me/neznamy/tab/platforms/bukkit/tablist/TabListBase.java

@@ -0,0 +1,99 @@
+package me.neznamy.tab.platforms.bukkit.tablist;
+
+import lombok.Getter;
+import lombok.NonNull;
+import me.neznamy.tab.platforms.bukkit.BukkitTabPlayer;
+import me.neznamy.tab.platforms.bukkit.BukkitUtils;
+import me.neznamy.tab.platforms.bukkit.nms.BukkitReflection;
+import me.neznamy.tab.shared.platform.TabList;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.UUID;
+import java.util.function.Function;
+
+/**
+ * Base TabList class for all implementations.
+ *
+ * @param   <C>
+ *          Component class
+ */
+public abstract class TabListBase<C> extends TabList<BukkitTabPlayer, C> {
+
+    /** Instance function */
+    @Getter
+    private static Function<BukkitTabPlayer, TabListBase<?>> instance;
+
+    @Nullable
+    protected static SkinData skinData;
+
+    @Nullable
+    private static PacketHeaderFooter headerFooter;
+
+    /**
+     * Constructs new instance.
+     *
+     * @param   player
+     *          Player this tablist will belong to
+     */
+    protected TabListBase(@NotNull BukkitTabPlayer player) {
+        super(player);
+    }
+
+    /**
+     * Finds the best available instance for current server software.
+     */
+    public static void findInstance() {
+        try {
+            if (BukkitReflection.is1_19_3Plus()) {
+                PacketTabList1193.loadNew();
+                instance = PacketTabList1193::new;
+            } else if (BukkitReflection.getMinorVersion() >= 8) {
+                PacketTabList18.load();
+                instance = PacketTabList18::new;
+            } else {
+                PacketTabList17.load();
+                instance = PacketTabList17::new;
+            }
+        } catch (Exception e) {
+            BukkitUtils.compatibilityError(e, "tablist entry management", "Bukkit API",
+                    "Layout feature will not work",
+                    "Prevent-spectator-effect feature will not work",
+                    "Ping spoof feature will not work",
+                    "Tablist formatting missing anti-override",
+                    "Tablist formatting not supporting relational placeholders");
+            instance = BukkitTabList::new;
+        }
+
+        try {
+            if (BukkitReflection.getMinorVersion() >= 8) {
+                headerFooter = new PacketHeaderFooter();
+            }
+        } catch (Exception e) {
+            BukkitUtils.compatibilityError(e, "sending header/footer", null,
+                    "Header/footer will not work");
+        }
+    }
+
+    @Override
+    public void setPlayerListHeaderFooter0(@NonNull Object header, @NonNull Object footer) {
+        if (headerFooter != null) headerFooter.set(player, header, footer);
+    }
+
+    @Override
+    public boolean containsEntry(@NonNull UUID entry) {
+        return true; // TODO?
+    }
+
+    /**
+     * Returns player's skin. If NMS fields did not load or server is in
+     * offline mode, returns {@code null}.
+     *
+     * @return  Player's skin or {@code null}.
+     */
+    @Nullable
+    public Skin getSkin() {
+        if (skinData == null) return null;
+        return skinData.getSkin(player.getPlayer());
+    }
+}

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

@@ -1,7 +1,7 @@
 package me.neznamy.tab.platforms.bungeecord;
 
 import lombok.RequiredArgsConstructor;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.chat.TabComponent;
 import me.neznamy.tab.shared.platform.BossBar;
 import me.neznamy.tab.api.bossbar.BarColor;
 import me.neznamy.tab.api.bossbar.BarStyle;
@@ -29,13 +29,15 @@ public class BungeeBossBar implements BossBar {
     @NotNull
     private final Map<UUID, Integer> styles = new HashMap<>();
 
+    /** Flag tracking whether boss bars should be frozen or not */
+    private boolean frozen;
+
     @Override
     public void create(@NotNull UUID id, @NotNull String title, float progress, @NotNull BarColor color, @NotNull BarStyle style) {
-        if (player.getVersion().getMinorVersion() < 9) return;
-
+        if (frozen) return; // Server switch
         net.md_5.bungee.protocol.packet.BossBar packet = new net.md_5.bungee.protocol.packet.BossBar(id, 0);
         packet.setHealth(progress);
-        packet.setTitle(player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(title), player.getVersion()));
+        packet.setTitle(TabComponent.optimized(title).convert(player.getVersion()));
         packet.setColor(color.ordinal());
         packet.setDivision(style.ordinal());
         player.sendPacket(packet);
@@ -46,17 +48,15 @@ public class BungeeBossBar implements BossBar {
 
     @Override
     public void update(@NotNull UUID id, @NotNull String title) {
-        if (player.getVersion().getMinorVersion() < 9) return;
-
+        if (frozen) return; // Server switch
         net.md_5.bungee.protocol.packet.BossBar packet = new net.md_5.bungee.protocol.packet.BossBar(id, 3);
-        packet.setTitle(player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(title), player.getVersion()));
+        packet.setTitle(TabComponent.optimized(title).convert(player.getVersion()));
         player.sendPacket(packet);
     }
 
     @Override
     public void update(@NotNull UUID id, float progress) {
-        if (player.getVersion().getMinorVersion() < 9) return;
-
+        if (frozen) return; // Server switch
         net.md_5.bungee.protocol.packet.BossBar packet = new net.md_5.bungee.protocol.packet.BossBar(id, 2);
         packet.setHealth(progress);
         player.sendPacket(packet);
@@ -64,8 +64,7 @@ public class BungeeBossBar implements BossBar {
 
     @Override
     public void update(@NotNull UUID id, @NotNull BarStyle style) {
-        if (player.getVersion().getMinorVersion() < 9) return;
-
+        if (frozen) return; // Server switch
         net.md_5.bungee.protocol.packet.BossBar packet = new net.md_5.bungee.protocol.packet.BossBar(id, 4);
         packet.setDivision(style.ordinal());
         packet.setColor(colors.get(id));
@@ -76,8 +75,7 @@ public class BungeeBossBar implements BossBar {
 
     @Override
     public void update(@NotNull UUID id, @NotNull BarColor color) {
-        if (player.getVersion().getMinorVersion() < 9) return;
-
+        if (frozen) return; // Server switch
         net.md_5.bungee.protocol.packet.BossBar packet = new net.md_5.bungee.protocol.packet.BossBar(id, 4);
         packet.setDivision(styles.get(id));
         packet.setColor(color.ordinal());
@@ -88,11 +86,20 @@ public class BungeeBossBar implements BossBar {
 
     @Override
     public void remove(@NotNull UUID id) {
-        if (player.getVersion().getMinorVersion() < 9) return;
-
+        if (frozen) return; // Server switch
         player.sendPacket(new net.md_5.bungee.protocol.packet.BossBar(id, 1));
 
         colors.remove(id);
         styles.remove(id);
     }
-}
+
+    @Override
+    public void freeze() {
+        frozen = true;
+    }
+
+    @Override
+    public void unfreeze() {
+        frozen = false;
+    }
+}

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

@@ -17,22 +17,37 @@ import org.jetbrains.annotations.NotNull;
 /**
  * The core for BungeeCord forwarding events into all enabled features
  */
-public class BungeeEventListener extends EventListener<ProxiedPlayer> implements Listener {
+public class BungeeEventListener implements EventListener<ProxiedPlayer>, Listener {
 
+    /**
+     * Listens to player disconnecting from the server.
+     *
+     * @param   e
+     *          Disconnect event
+     */
     @EventHandler
     public void onQuit(PlayerDisconnectEvent e) {
         quit(e.getPlayer().getUniqueId());
     }
 
+    /**
+     * Listens to player connecting to a backend server. This handles
+     * both initial connections and server switch.
+     *
+     * @param   e
+     *          Server switch event
+     */
     @EventHandler
     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
+        // Avoid 1.20.3+ client crash on scoreboard packets, do it sync to prevent packet being sent after event, but before processing
+        // Avoid 1.20.5+ client disconnect with "Network Protocol Error"
         TabPlayer p = tab.getPlayer(e.getPlayer().getUniqueId());
-        if (p != null && p.getVersion().getNetworkId() >= ProtocolVersion.V1_20_3.getNetworkId()) {
+        if (p != null && p.getVersion().getNetworkId() >= ProtocolVersion.V1_20_2.getNetworkId()) {
             p.getScoreboard().freeze();
+            p.getBossBar().freeze();
         }
 
         tab.getCPUManager().runTask(() -> {
@@ -58,6 +73,12 @@ public class BungeeEventListener extends EventListener<ProxiedPlayer> implements
         });
     }
 
+    /**
+     * Listens to command execute event to potentially cancel it.
+     *
+     * @param   e
+     *          Command execute event
+     */
     @EventHandler
     public void onCommand(ChatEvent e) {
         if (e.isCommand() && command(((ProxiedPlayer)e.getSender()).getUniqueId(), e.getMessage())) {
@@ -65,8 +86,14 @@ public class BungeeEventListener extends EventListener<ProxiedPlayer> implements
         }
     }
 
+    /**
+     * Listens to plugin messages.
+     *
+     * @param   e
+     *          Plugin message event
+     */
     @EventHandler
-    public void on(PluginMessageEvent e) {
+    public void onPluginMessage(PluginMessageEvent e) {
         if (!e.getTag().equals(TabConstants.PLUGIN_MESSAGE_CHANNEL_NAME)) return;
         if (e.getReceiver() instanceof ProxiedPlayer) {
             e.setCancelled(true);

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

@@ -1,36 +1,29 @@
 package me.neznamy.tab.platforms.bungeecord;
 
-import com.google.common.collect.Lists;
 import io.netty.buffer.ByteBuf;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelDuplexHandler;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelPromise;
-import java.lang.reflect.Field;
-
 import lombok.SneakyThrows;
-import me.neznamy.tab.shared.features.nametags.NameTag;
-import me.neznamy.tab.shared.features.redis.RedisSupport;
-import me.neznamy.tab.shared.features.redis.feature.RedisTeams;
-import me.neznamy.tab.shared.platform.TabPlayer;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
 import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.TabConstants;
 import me.neznamy.tab.shared.features.injection.NettyPipelineInjector;
-import me.neznamy.tab.shared.features.redis.RedisPlayer;
-import me.neznamy.tab.shared.features.sorting.Sorting;
+import me.neznamy.tab.shared.platform.TabPlayer;
 import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.md_5.bungee.UserConnection;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
-import net.md_5.bungee.connection.InitialHandler;
 import net.md_5.bungee.netty.ChannelWrapper;
 import net.md_5.bungee.protocol.DefinedPacket;
 import net.md_5.bungee.protocol.Protocol;
-import net.md_5.bungee.protocol.packet.*;
+import net.md_5.bungee.protocol.packet.Login;
+import net.md_5.bungee.protocol.packet.ScoreboardDisplay;
+import net.md_5.bungee.protocol.packet.ScoreboardObjective;
+import net.md_5.bungee.protocol.packet.Team;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.lang.reflect.Method;
-import java.util.Collection;
 import java.util.function.Function;
 import java.util.function.Supplier;
 
@@ -43,9 +36,6 @@ import java.util.function.Supplier;
 public class BungeePipelineInjector extends NettyPipelineInjector {
 
     /** Inaccessible bungee internals */
-    @Nullable
-    private static Field wrapperField;
-
     @Nullable
     private static Object directionData;
 
@@ -54,7 +44,6 @@ public class BungeePipelineInjector extends NettyPipelineInjector {
 
     static {
         try {
-            (wrapperField = InitialHandler.class.getDeclaredField("ch")).setAccessible(true);
             directionData = ReflectionUtils.setAccessible(Protocol.class.getDeclaredField("TO_CLIENT")).get(Protocol.GAME);
             getId = ReflectionUtils.setAccessible(Protocol.DirectionData.class.getDeclaredMethod("getId", Class.class, int.class));
         } catch (ReflectiveOperationException exception) {
@@ -69,6 +58,21 @@ public class BungeePipelineInjector extends NettyPipelineInjector {
     @NotNull
     private final Supplier<DefinedPacket>[] extraPacketSuppliers = new Supplier[]{Team::new, ScoreboardDisplay::new, ScoreboardObjective::new};
 
+    /** Whether ByteBuf deserialization should be enabled or not */
+    protected boolean byteBufDeserialization;
+
+    /**
+     * Constructs new instance of the feature
+     */
+    public BungeePipelineInjector() {
+        super("inbound-boss");
+        boolean antiOverrideTeams = config().getBoolean("scoreboard-teams.enabled", true) &&
+                config().getBoolean("scoreboard-teams.anti-override", true);
+        boolean respectOtherScoreboardPlugins = config().getBoolean("scoreboard.enabled", false) &&
+                config().getBoolean("scoreboard.respect-other-plugins", true);
+        byteBufDeserialization = antiOverrideTeams || respectOtherScoreboardPlugins;
+    }
+
     @Override
     @NotNull
     public Function<TabPlayer, ChannelDuplexHandler> getChannelFunction() {
@@ -76,108 +80,9 @@ public class BungeePipelineInjector extends NettyPipelineInjector {
     }
 
     @Override
-    @Nullable
-    @SneakyThrows
+    @NotNull
     protected Channel getChannel(@NotNull TabPlayer player) {
-        if (wrapperField == null) return null;
-        return ((ChannelWrapper) wrapperField.get(((BungeeTabPlayer) player).getPlayer().getPendingConnection())).getHandle();
-    }
-
-    @Override
-    public void onDisplayObjective(@NotNull TabPlayer player, @NotNull Object packet) {
-        TAB.getInstance().getFeatureManager().onDisplayObjective(player,
-                ((ScoreboardDisplay)packet).getPosition(), ((ScoreboardDisplay) packet).getName());
-    }
-
-    @Override
-    public void onObjective(@NotNull TabPlayer player, @NotNull Object packet) {
-        TAB.getInstance().getFeatureManager().onObjective(player,
-                ((ScoreboardObjective) packet).getAction(), ((ScoreboardObjective) packet).getName());
-    }
-
-    @Override
-    public boolean isDisplayObjective(@NotNull Object packet) {
-        return packet instanceof ScoreboardDisplay;
-    }
-
-    @Override
-    public boolean isObjective(@NotNull Object packet) {
-        return packet instanceof ScoreboardObjective;
-    }
-
-    @Override
-    public boolean isTeam(@NotNull Object packet) {
-        return packet instanceof Team;
-    }
-
-    @Override
-    public boolean isPlayerInfo(@NotNull Object packet) {
-        return packet instanceof PlayerListItem || packet instanceof PlayerListItemUpdate;
-    }
-
-    @Override
-    public void modifyPlayers(@NotNull Object team) {
-        if (TAB.getInstance().getNameTagManager() == null) return;
-        Team packet = (Team) team;
-        if (packet.getMode() == 1 || packet.getMode() == 2 || packet.getMode() == 4) return;
-        Collection<String> col = Lists.newArrayList(packet.getPlayers());
-        for (TabPlayer p : TAB.getInstance().getOnlinePlayers()) {
-            Sorting sorting = TAB.getInstance().getFeatureManager().getFeature(TabConstants.Feature.SORTING);
-            String expectedTeam = sorting.getShortTeamName(p);
-            if (expectedTeam != null && (col.contains(p.getNickname()) || col.contains(p.getName())) &&
-                    !((NameTag)TAB.getInstance().getNameTagManager()).getDisableChecker().isDisabledPlayer(p) &&
-                    !TAB.getInstance().getNameTagManager().hasTeamHandlingPaused(p) && !packet.getName().equals(expectedTeam)) {
-                logTeamOverride(packet.getName(), p.getName(), expectedTeam);
-                col.remove(p.getNickname());
-                col.remove(p.getName());
-            }
-        }
-        RedisSupport redis = TAB.getInstance().getFeatureManager().getFeature(TabConstants.Feature.REDIS_BUNGEE);
-        if (redis != null) {
-            RedisTeams teams = redis.getRedisTeams();
-            if (teams != null) {
-                for (RedisPlayer p : redis.getRedisPlayers().values()) {
-                    if (col.contains(p.getNickname()) && !packet.getName().equals(teams.getTeamNames().get(p))) {
-                        logTeamOverride(packet.getName(), p.getNickname(), teams.getTeamNames().get(p));
-                        col.remove(p.getNickname());
-                    }
-                }
-            }
-        }
-        packet.setPlayers(col.toArray(new String[0]));
-    }
-
-    @Override
-    public void onPlayerInfo(@NotNull TabPlayer receiver, @NotNull Object packet) {
-        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) 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()));
-                }
-                if (listItem.getAction() == PlayerListItem.Action.ADD_PLAYER) {
-                    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());
-                }
-            }
-        }
+        return ((UserConnection) ((BungeeTabPlayer) player).getPlayer()).getCh().getHandle();
     }
 
     @Override
@@ -185,19 +90,12 @@ public class BungeePipelineInjector extends NettyPipelineInjector {
         return packet instanceof Login;
     }
 
-    /**
-     * Constructs new instance of the feature
-     */
-    public BungeePipelineInjector() {
-        super("inbound-boss");
-    }
-
     /**
      * Channel duplex handler override if features using packets that must be
      * deserialized manually are used. If they are disabled, deserialization is
      * disabled for better performance.
      */
-    public class DeserializableBungeeChannelDuplexHandler extends TabChannelDuplexHandler {
+    private class DeserializableBungeeChannelDuplexHandler extends TabChannelDuplexHandler {
 
         /**
          * Constructs new instance with given player
@@ -205,7 +103,7 @@ public class BungeePipelineInjector extends NettyPipelineInjector {
          * @param   player
          *          player to inject
          */
-        public DeserializableBungeeChannelDuplexHandler(@NotNull TabPlayer player) {
+        private DeserializableBungeeChannelDuplexHandler(@NotNull TabPlayer player) {
             super(player);
         }
 
@@ -227,12 +125,11 @@ 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());
+                    ChannelWrapper ch = ((UserConnection) ((BungeeTabPlayer) player).getPlayer()).getCh();
                     if (!ch.getEncodeProtocol().TO_CLIENT.hasPacket(extraPacketClasses[i], ((ProxiedPlayer)player.getPlayer()).getPendingConnection().getVersion())) {
                         continue;
                     }

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

@@ -1,27 +1,20 @@
 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.platforms.bungeecord.hook.BungeePremiumVanishHook;
 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.chat.*;
 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.hook.PremiumVanishHook;
 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.ProxyConfig;
 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;
@@ -30,27 +23,42 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.io.File;
-import java.util.stream.Collectors;
+import java.util.ArrayList;
+import java.util.List;
 
 /**
  * BungeeCord implementation of Platform
  */
-@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;
 
+    /**
+     * Constructs new instance with given plugin instance.
+     *
+     * @param   plugin
+     *          Plugin instance
+     */
+    public BungeePlatform(@NotNull BungeeTAB plugin) {
+        this.plugin = plugin;
+        if (ProxyServer.getInstance().getPluginManager().getPlugin("PremiumVanish") != null) {
+            PremiumVanishHook.setInstance(new BungeePremiumVanishHook(this));
+        }
+    }
+
+    @SuppressWarnings("deprecation")
     @Override
     public void loadPlayers() {
-        ViaVersionHook.getInstance().printProxyWarn();
+        try {
+            ProxyConfig config = ProxyServer.getInstance().getConfig();
+            if ((boolean) config.getClass().getMethod("isDisableTabListRewrite").invoke(config)) {
+                logWarn(new SimpleComponent("Waterfall's \"disable_tab_list_rewrite: true\" option may cause " +
+                        "the plugin to not work correctly. Disable it to avoid issues."));
+            }
+        } catch (Exception e) {
+            // Not waterfall
+        }
         for (ProxiedPlayer p : ProxyServer.getInstance().getPlayers()) {
             TAB.getInstance().addPlayer(new BungeeTabPlayer(this, p));
         }
@@ -67,13 +75,13 @@ public class BungeePlatform extends ProxyPlatform {
     }
 
     @Override
-    public void logInfo(@NotNull IChatBaseComponent message) {
+    public void logInfo(@NotNull TabComponent message) {
         plugin.getLogger().info(message.toLegacyText());
     }
 
     @Override
-    public void logWarn(@NotNull IChatBaseComponent message) {
-        plugin.getLogger().warning(EnumChatFormat.RED.getFormat() + message.toLegacyText());
+    public void logWarn(@NotNull TabComponent message) {
+        plugin.getLogger().warning(EnumChatFormat.RED + message.toLegacyText());
     }
 
     @Override
@@ -94,7 +102,7 @@ public class BungeePlatform extends ProxyPlatform {
 
     @Override
     public void startMetrics() {
-        new Metrics(plugin, 10535).addCustomChart(new SimplePie(TabConstants.MetricsChart.GLOBAL_PLAYER_LIST_ENABLED,
+        new Metrics(plugin, TabConstants.BSTATS_PLUGIN_ID_BUNGEE).addCustomChart(new SimplePie(TabConstants.MetricsChart.GLOBAL_PLAYER_LIST_ENABLED,
                 () -> TAB.getInstance().getFeatureManager().isFeatureEnabled(TabConstants.Feature.GLOBAL_PLAYER_LIST) ? "Yes" : "No"));
     }
 
@@ -116,42 +124,18 @@ public class BungeePlatform extends ProxyPlatform {
     }
 
     @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)));
+    public BaseComponent convertComponent(@NotNull TabComponent component, boolean modern) {
+        if (component instanceof SimpleComponent) return new TextComponent(component.toLegacyText());
+        StructuredComponent iComponent = (StructuredComponent) component;
+        TextComponent textComponent = new TextComponent(iComponent.getText());
+        ChatModifier modifier = iComponent.getModifier();
+        if (modifier.getColor() != null) {
+            if (modern) {
+                textComponent.setColor(ChatColor.of("#" + modifier.getColor().getHexCode()));
+            } else {
+                textComponent.setColor(ChatColor.of(modifier.getColor().getLegacyColor().name()));
+            }
+        }
 
         if (modifier.isBold()) textComponent.setBold(true);
         if (modifier.isItalic()) textComponent.setItalic(true);
@@ -161,15 +145,14 @@ public class BungeePlatform extends ProxyPlatform {
 
         textComponent.setFont(modifier.getFont());
 
-        if (modifier.getClickEvent() != null) {
-            textComponent.setClickEvent(new ClickEvent(
-                    ClickEvent.Action.valueOf(modifier.getClickEvent().getAction().name()),
-                    modifier.getClickEvent().getValue()
-            ));
+        if (!iComponent.getExtra().isEmpty()) {
+            List<BaseComponent> list = new ArrayList<>();
+            for (StructuredComponent extra : iComponent.getExtra()) {
+                list.add(convertComponent(extra, modern));
+            }
+            textComponent.setExtra(list);
         }
 
-        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

@@ -1,14 +1,16 @@
 package me.neznamy.tab.platforms.bungeecord;
 
+import com.google.common.collect.Lists;
+import lombok.NonNull;
 import me.neznamy.tab.shared.ProtocolVersion;
+import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.chat.EnumChatFormat;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.chat.TabComponent;
 import me.neznamy.tab.shared.platform.Scoreboard;
 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;
@@ -18,32 +20,40 @@ import java.util.Collection;
  * any Scoreboard API and the scoreboard class it has is just a
  * downstream tracker, we need to use packets.
  */
-public class BungeeScoreboard extends Scoreboard<BungeeTabPlayer> {
+public class BungeeScoreboard extends Scoreboard<BungeeTabPlayer, BaseComponent> {
 
-    public BungeeScoreboard(@NotNull BungeeTabPlayer player) {
+    /** Version with a minor team recode */
+    private final int TEAM_REWORK_VERSION = 13;
+
+    /**
+     * Constructs new instance with given parameter
+     *
+     * @param   player
+     *          Player this scoreboard will belong to
+     */
+    public BungeeScoreboard(@NonNull BungeeTabPlayer player) {
         super(player);
     }
 
     @Override
-    public void setDisplaySlot0(int slot, @NotNull String objective) {
+    public void setDisplaySlot0(int slot, @NonNull String objective) {
         player.sendPacket(new ScoreboardDisplay(slot, objective));
     }
 
     @Override
-    public void registerObjective0(@NotNull String objectiveName, @NotNull String title, int display,
-                                   @Nullable IChatBaseComponent numberFormat) {
+    public void registerObjective0(@NonNull String objectiveName, @NonNull String title, int display,
+                                   @Nullable BaseComponent numberFormat) {
         player.sendPacket(new ScoreboardObjective(
                 objectiveName,
                 either(title),
                 ScoreboardObjective.HealthDisplay.values()[display],
                 (byte) ObjectiveAction.REGISTER,
-                numberFormat == null ? null : new NumberFormat(NumberFormat.Type.FIXED,
-                        player.getPlatform().toComponent(numberFormat, player.getVersion()))
+                numberFormat == null ? null : new NumberFormat(NumberFormat.Type.FIXED, numberFormat)
         ));
     }
 
     @Override
-    public void unregisterObjective0(@NotNull String objectiveName) {
+    public void unregisterObjective0(@NonNull String objectiveName) {
         player.sendPacket(new ScoreboardObjective(
                 objectiveName,
                 either(""), // Empty value instead of null to prevent NPE kick on 1.7
@@ -54,26 +64,21 @@ public class BungeeScoreboard extends Scoreboard<BungeeTabPlayer> {
     }
 
     @Override
-    public void updateObjective0(@NotNull String objectiveName, @NotNull String title, int display,
-                                 @Nullable IChatBaseComponent numberFormat) {
+    public void updateObjective0(@NonNull String objectiveName, @NonNull String title, int display,
+                                 @Nullable BaseComponent numberFormat) {
         player.sendPacket(new ScoreboardObjective(
                 objectiveName,
                 either(title),
                 ScoreboardObjective.HealthDisplay.values()[display],
                 (byte) ObjectiveAction.UPDATE,
-                numberFormat == null ? null : new NumberFormat(NumberFormat.Type.FIXED,
-                        player.getPlatform().toComponent(numberFormat, player.getVersion()))
+                numberFormat == null ? null : new NumberFormat(NumberFormat.Type.FIXED, numberFormat)
         ));
     }
 
     @Override
-    public void registerTeam0(@NotNull String name, @NotNull String prefix, @NotNull String suffix,
-                              @NotNull NameVisibility visibility, @NotNull CollisionRule collision,
-                              @NotNull Collection<String> players, int options) {
-        int color = 0;
-        if (player.getVersion().getMinorVersion() >= 13) {
-            color = EnumChatFormat.lastColorsOf(prefix).ordinal();
-        }
+    public void registerTeam0(@NonNull String name, @NonNull String prefix, @NonNull String suffix,
+                              @NonNull NameVisibility visibility, @NonNull CollisionRule collision,
+                              @NonNull Collection<String> players, int options, @NonNull EnumChatFormat color) {
         player.sendPacket(new Team(
                 name,
                 (byte) TeamAction.CREATE,
@@ -82,24 +87,21 @@ public class BungeeScoreboard extends Scoreboard<BungeeTabPlayer> {
                 either(suffix),
                 visibility.toString(),
                 collision.toString(),
-                color,
+                player.getVersion().getMinorVersion() >= TEAM_REWORK_VERSION ? color.ordinal() : 0,
                 (byte)options,
                 players.toArray(new String[0])
         ));
     }
 
     @Override
-    public void unregisterTeam0(@NotNull String name) {
+    public void unregisterTeam0(@NonNull String name) {
         player.sendPacket(new Team(name));
     }
 
     @Override
-    public void updateTeam0(@NotNull String name, @NotNull String prefix, @NotNull String suffix,
-                            @NotNull NameVisibility visibility, @NotNull CollisionRule collision, int options) {
-        int color = 0;
-        if (player.getVersion().getMinorVersion() >= 13) {
-            color = EnumChatFormat.lastColorsOf(prefix).ordinal();
-        }
+    public void updateTeam0(@NonNull String name, @NonNull String prefix, @NonNull String suffix,
+                            @NonNull NameVisibility visibility, @NonNull CollisionRule collision,
+                            int options, @NonNull EnumChatFormat color) {
         player.sendPacket(new Team(
                 name,
                 (byte) TeamAction.UPDATE,
@@ -108,28 +110,27 @@ public class BungeeScoreboard extends Scoreboard<BungeeTabPlayer> {
                 either(suffix),
                 visibility.toString(),
                 collision.toString(),
-                color,
+                player.getVersion().getMinorVersion() >= TEAM_REWORK_VERSION ? color.ordinal() : 0,
                 (byte)options,
                 null
         ));
     }
 
     @Override
-    public void setScore0(@NotNull String objective, @NotNull String scoreHolder, int score,
-                          @Nullable IChatBaseComponent displayName, @Nullable IChatBaseComponent numberFormat) {
+    public void setScore0(@NonNull String objective, @NonNull String scoreHolder, int score,
+                          @Nullable BaseComponent displayName, @Nullable BaseComponent 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()))
+                displayName,
+                numberFormat == null ? null : new NumberFormat(NumberFormat.Type.FIXED, numberFormat)
         ));
     }
 
     @Override
-    public void removeScore0(@NotNull String objective, @NotNull String scoreHolder) {
+    public void removeScore0(@NonNull String objective, @NonNull String scoreHolder) {
         if (player.getVersion().getNetworkId() >= ProtocolVersion.V1_20_3.getNetworkId()) {
             player.sendPacket(new ScoreboardScoreReset(scoreHolder, objective));
         } else {
@@ -137,11 +138,28 @@ public class BungeeScoreboard extends Scoreboard<BungeeTabPlayer> {
         }
     }
 
-    private Either<String, BaseComponent> either(@NotNull String text) {
-        if (player.getVersion().getMinorVersion() >= 13) {
-            return Either.right(player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(text), player.getVersion()));
+    private Either<String, BaseComponent> either(@NonNull String text) {
+        if (player.getVersion().getMinorVersion() >= TEAM_REWORK_VERSION) {
+            return Either.right(TabComponent.optimized(text).convert(player.getVersion()));
         } else {
             return Either.left(text);
         }
     }
+
+    @Override
+    public void onPacketSend(@NonNull Object packet) {
+        if (packet instanceof ScoreboardDisplay) {
+            ScoreboardDisplay display = (ScoreboardDisplay) packet;
+            TAB.getInstance().getFeatureManager().onDisplayObjective(player, display.getPosition(), display.getName());
+        }
+        if (packet instanceof ScoreboardObjective) {
+            ScoreboardObjective objective = (ScoreboardObjective) packet;
+            TAB.getInstance().getFeatureManager().onObjective(player, objective.getAction(), objective.getName());
+        }
+        if (isAntiOverrideTeams() && packet instanceof Team) {
+            Team team = (Team) packet;
+            if (team.getMode() == TeamAction.REMOVE || team.getMode() == TeamAction.UPDATE) return;
+            team.setPlayers(onTeamPacket(team.getMode(), team.getName(), Lists.newArrayList(team.getPlayers())).toArray(new String[0]));
+        }
+    }
 }

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

@@ -13,8 +13,8 @@ public class BungeeTAB extends Plugin {
     @Override
     public void onEnable() {
         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."));
+            getLogger().warning(EnumChatFormat.RED + "The 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/BungeeTabCommand.java

@@ -13,6 +13,9 @@ import org.jetbrains.annotations.NotNull;
 
 import java.util.Collections;
 
+/**
+ * Command handler for plugin's command on BungeeCord.
+ */
 public class BungeeTabCommand extends Command implements TabExecutor {
 
     /**

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

@@ -1,19 +1,20 @@
 package me.neznamy.tab.platforms.bungeecord;
 
-import de.myzelyam.api.vanish.BungeeVanishAPI;
 import lombok.Getter;
+import me.neznamy.tab.platforms.bungeecord.tablist.BungeeTabList;
 import me.neznamy.tab.shared.ProtocolVersion;
 import me.neznamy.tab.platforms.bungeecord.tablist.BungeeTabList1193;
 import me.neznamy.tab.platforms.bungeecord.tablist.BungeeTabList17;
 import me.neznamy.tab.platforms.bungeecord.tablist.BungeeTabList18;
 import me.neznamy.tab.shared.TAB;
 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.chat.TabComponent;
+import me.neznamy.tab.shared.hook.PremiumVanishHook;
 import me.neznamy.tab.shared.platform.TabList;
 import me.neznamy.tab.shared.platform.BossBar;
 import me.neznamy.tab.shared.proxy.ProxyTabPlayer;
 import net.md_5.bungee.UserConnection;
+import net.md_5.bungee.api.chat.BaseComponent;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
 import net.md_5.bungee.connection.InitialHandler;
 import net.md_5.bungee.connection.LoginResult;
@@ -30,17 +31,17 @@ public class BungeeTabPlayer extends ProxyTabPlayer {
 
     /** Player's scoreboard */
     @NotNull
-    private final Scoreboard<BungeeTabPlayer> scoreboard = new BungeeScoreboard(this);
+    private final BungeeScoreboard scoreboard = new BungeeScoreboard(this);
 
     /** Player's tab list based on version */
     @NotNull
-    private final TabList tabList1_7 = new BungeeTabList17(this);
+    private final BungeeTabList tabList1_7 = new BungeeTabList17(this);
 
     @NotNull
-    private final TabList tabList1_8 = new BungeeTabList18(this);
+    private final BungeeTabList tabList1_8 = new BungeeTabList18(this);
 
     @NotNull
-    private final TabList tabList1_19_3 = new BungeeTabList1193(this);
+    private final BungeeTabList tabList1_19_3 = new BungeeTabList1193(this);
 
     /** Player's boss bar view */
     @NotNull
@@ -55,7 +56,7 @@ public class BungeeTabPlayer extends ProxyTabPlayer {
      *          BungeeCord player
      */
     public BungeeTabPlayer(@NotNull BungeePlatform platform, @NotNull ProxiedPlayer p) {
-        super(platform, p, p.getUniqueId(), p.getName(), p.getServer() != null ? p.getServer().getInfo().getName() : "-", -1);
+        super(platform, p, p.getUniqueId(), p.getName(), p.getServer() != null ? p.getServer().getInfo().getName() : "-", p.getPendingConnection().getVersion());
     }
 
     @Override
@@ -69,8 +70,8 @@ public class BungeeTabPlayer extends ProxyTabPlayer {
     }
 
     @Override
-    public void sendMessage(@NotNull IChatBaseComponent message) {
-        getPlayer().sendMessage(getPlatform().toComponent(message, getVersion()));
+    public void sendMessage(@NotNull TabComponent message) {
+        getPlayer().sendMessage((BaseComponent) message.convert(getVersion()));
     }
 
     @Override
@@ -89,11 +90,6 @@ public class BungeeTabPlayer extends ProxyTabPlayer {
         return (ProxiedPlayer) player;
     }
 
-    @Override
-    public boolean isOnline() {
-        return getPlayer().isConnected();
-    }
-
     @Override
     public BungeePlatform getPlatform() {
         return (BungeePlatform) platform;
@@ -116,33 +112,15 @@ public class BungeeTabPlayer extends ProxyTabPlayer {
         }
     }
 
-    /**
-     * If ViaVersion is installed on BungeeCord, it changes protocol to match version
-     * of server to which player is connected to. For that reason, we need to retrieve
-     * the field more often than just on join.
-     *
-     * @return  Player's current protocol version
-     */
-    @Override
-    @NotNull
-    public ProtocolVersion getVersion() {
-        return ProtocolVersion.fromNetworkId(getPlayer().getPendingConnection().getVersion());
-    }
-
     @Override
     public boolean isVanished() {
-        try {
-            //noinspection ConstantConditions
-            if (getPlatform().isPremiumVanish() && BungeeVanishAPI.isInvisible(getPlayer())) return true;
-        } catch (IllegalStateException ignored) {
-            // PV Bug: PremiumVanish must be enabled to use its API
-        }
+        if (PremiumVanishHook.getInstance() != null && PremiumVanishHook.getInstance().isVanished(this)) return true;
         return super.isVanished();
     }
 
     @Override
     @NotNull
-    public TabList getTabList() {
+    public BungeeTabList getTabList() {
         int version = getPlayer().getPendingConnection().getVersion();
         if (version >= ProtocolVersion.V1_19_3.getNetworkId()) return tabList1_19_3;
         if (version >= ProtocolVersion.V1_8.getNetworkId()) return tabList1_8;

bungeecord/src/main/java/me/neznamy/tab/platforms/bungeecord/features/BungeeRedisSupport.java

@@ -21,6 +21,12 @@ public class BungeeRedisSupport extends RedisSupport implements Listener {
     @NotNull
     private final BungeeTAB plugin;
 
+    /**
+     * Listens to messages coming from other proxies.
+     *
+     * @param   e
+     *          Message event
+     */
     @EventHandler
     public void onMessage(@NotNull PubSubMessageEvent e) {
         if (!e.getChannel().equals(TabConstants.REDIS_CHANNEL_NAME)) return;

bungeecord/src/main/java/me/neznamy/tab/platforms/bungeecord/hook/BungeePremiumVanishHook.java

@@ -0,0 +1,53 @@
+package me.neznamy.tab.platforms.bungeecord.hook;
+
+import de.myzelyam.api.vanish.BungeeVanishAPI;
+import me.neznamy.tab.platforms.bungeecord.BungeeTabPlayer;
+import me.neznamy.tab.shared.chat.SimpleComponent;
+import me.neznamy.tab.shared.hook.PremiumVanishHook;
+import me.neznamy.tab.shared.platform.Platform;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import me.neznamy.tab.shared.util.ReflectionUtils;
+import net.md_5.bungee.api.connection.ProxiedPlayer;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * PremiumVanish hook for BungeeCord.
+ */
+public class BungeePremiumVanishHook extends PremiumVanishHook {
+
+    private final boolean canSeeEnabled;
+
+    /**
+     * Constructs new instance. If using an old version of PV, warn
+     * is printed into the platform's logger.
+     *
+     * @param   platform
+     *          Platform to print potential warn to
+     */
+    public BungeePremiumVanishHook(@NotNull Platform platform) {
+        if (ReflectionUtils.methodExists(BungeeVanishAPI.class, "canSee", ProxiedPlayer.class, ProxiedPlayer.class)) {
+            canSeeEnabled = true;
+        } else {
+            canSeeEnabled = false;
+            platform.logWarn(new SimpleComponent("Detected an outdated version of " +
+                    "PremiumVanish with limited API. Vanish compatibility " +
+                    "may not work as expected. Update PremiumVanish to version 2.7.11+ for optimal experience."));
+        }
+    }
+
+    @Override
+    public boolean canSee(@NotNull TabPlayer viewer, @NotNull TabPlayer target) {
+        //noinspection ConstantValue
+        return canSeeEnabled && BungeeVanishAPI.canSee(((BungeeTabPlayer)viewer).getPlayer(), ((BungeeTabPlayer)target).getPlayer());
+    }
+
+    @Override
+    public boolean isVanished(@NotNull TabPlayer player) {
+        try {
+            return BungeeVanishAPI.isInvisible(((BungeeTabPlayer)player).getPlayer());
+        } catch (IllegalStateException ignored) {
+            // PV Bug: PremiumVanish must be enabled to use its API
+        }
+        return false;
+    }
+}

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

@@ -1,74 +1,155 @@
 package me.neznamy.tab.platforms.bungeecord.tablist;
 
+import lombok.NonNull;
 import lombok.SneakyThrows;
 import me.neznamy.tab.platforms.bungeecord.BungeeTabPlayer;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.TAB;
 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.api.chat.BaseComponent;
 import net.md_5.bungee.protocol.Property;
 import net.md_5.bungee.protocol.packet.PlayerListHeaderFooter;
+import net.md_5.bungee.protocol.packet.PlayerListItem;
 import net.md_5.bungee.protocol.packet.PlayerListItem.Item;
+import net.md_5.bungee.protocol.packet.PlayerListItemUpdate;
 import net.md_5.bungee.tab.ServerUnique;
-import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.Collection;
 import java.util.UUID;
 
-public abstract class BungeeTabList implements TabList {
-
-    /** Player this TabList belongs to */
-    @NotNull
-    protected final BungeeTabPlayer player;
+/**
+ * Abstract TabList class for BungeeCord containing
+ * common code for all implementations.
+ */
+public abstract class BungeeTabList extends TabList<BungeeTabPlayer, BaseComponent> {
 
     /** Pointer to UUIDs in player's TabList */
     private final Collection<UUID> uuids;
 
+    /**
+     * Constructs new instance with given parameters.
+     *
+     * @param   player
+     *          Player this tablist will belong to
+     */
     @SneakyThrows
     @SuppressWarnings("unchecked")
-    public BungeeTabList(@NotNull BungeeTabPlayer player) {
-        this.player = player;
+    protected BungeeTabList(@NonNull BungeeTabPlayer player) {
+        super(player);
         uuids = (Collection<UUID>) ReflectionUtils.getField(ServerUnique.class, "uuids").get(((UserConnection)player.getPlayer()).getTabListHandler());
     }
 
     @Override
-    public void setPlayerListHeaderFooter(@NotNull IChatBaseComponent header, @NotNull IChatBaseComponent footer) {
-        player.sendPacket(new PlayerListHeaderFooter(
-                player.getPlatform().toComponent(header, player.getVersion()),
-                player.getPlatform().toComponent(footer, player.getVersion())
-        ));
+    public void setPlayerListHeaderFooter0(@NonNull BaseComponent header, @NonNull BaseComponent footer) {
+        player.sendPacket(new PlayerListHeaderFooter(header, footer));
     }
 
-    @NotNull
-    public Item item(@NotNull UUID id) {
+    /**
+     * Creates new {@link Item} with given UUID.
+     *
+     * @param   id
+     *          UUID to use
+     * @return  New {@link Item} with given UUID.
+     */
+    @NonNull
+    public Item item(@NonNull UUID id) {
         Item item = new Item();
         item.setUuid(id);
         return item;
     }
 
-    @NotNull
-    public Item entryToItem(Entry entry) {
-        Item item = item(entry.getUniqueId());
-        if (entry.getDisplayName() != null) {
-            item.setDisplayName(player.getPlatform().toComponent(entry.getDisplayName(), player.getVersion()));
-        }
-        item.setGamemode(entry.getGameMode());
-        item.setListed(true);
-        item.setPing(entry.getLatency());
-        if (entry.getSkin() != null) {
-            item.setProperties(new Property[]{new Property(TEXTURES_PROPERTY, entry.getSkin().getValue(), entry.getSkin().getSignature())});
+    /**
+     * Converts entry data to item.
+     *
+     * @param   id
+     *          Entry UUID
+     * @param   name
+     *          Entry name
+     * @param   skin
+     *          Entry skin
+     * @param   listed
+     *          Whether entry should be listed or not
+     * @param   latency
+     *          Entry latency
+     * @param   gameMode
+     *          Entry game mode
+     * @param   displayName
+     *          Entry display name
+     * @return  Converted item from parameters
+     */
+    @NonNull
+    public Item entryToItem(@NonNull UUID id, @NonNull String name, @Nullable Skin skin, boolean listed, int latency, int gameMode, @Nullable BaseComponent displayName) {
+        Item item = item(id);
+        item.setUsername(name);
+        item.setDisplayName(displayName);
+        item.setGamemode(gameMode);
+        item.setListed(listed);
+        item.setPing(latency);
+        if (skin != null) {
+            item.setProperties(new Property[]{new Property(TEXTURES_PROPERTY, skin.getValue(), skin.getSignature())});
         } else {
             item.setProperties(new Property[0]);
         }
-        item.setUsername(entry.getName());
         return item;
     }
 
-    public void addUuid(UUID id) {
+    /**
+     * Adds given UUID to BungeeCord's tablist uuid tracker.
+     *
+     * @param   id
+     *          UUID to add
+     */
+    public void addUuid(@NonNull UUID id) {
         uuids.add(id);
     }
 
-    public void removeUuid(UUID id) {
+    /**
+     * Removes given UUID from BungeeCord's tablist uuid tracker.
+     *
+     * @param   id
+     *          UUID to remove
+     */
+    public void removeUuid(@NonNull UUID id) {
         uuids.remove(id);
     }
+
+    @Override
+    public void onPacketSend(@NonNull Object packet) {
+        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) {
+                    BaseComponent expectedDisplayName = getExpectedDisplayName(item.getUuid());
+                    if (expectedDisplayName != null) item.setDisplayName(expectedDisplayName);
+                }
+                if (listItem.getAction() == PlayerListItem.Action.UPDATE_LATENCY || listItem.getAction() == PlayerListItem.Action.ADD_PLAYER) {
+                    item.setPing(TAB.getInstance().getFeatureManager().onLatencyChange(player, item.getUuid(), item.getPing()));
+                }
+                if (listItem.getAction() == PlayerListItem.Action.ADD_PLAYER) {
+                    TAB.getInstance().getFeatureManager().onEntryAdd(player, item.getUuid(), item.getUsername());
+                }
+            }
+        } else if (packet instanceof PlayerListItemUpdate) {
+            PlayerListItemUpdate update = (PlayerListItemUpdate) packet;
+            for (PlayerListItem.Item item : update.getItems()) {
+                if (update.getActions().contains(PlayerListItemUpdate.Action.UPDATE_DISPLAY_NAME)) {
+                    BaseComponent expectedDisplayName = getExpectedDisplayName(item.getUuid());
+                    if (expectedDisplayName != null) item.setDisplayName(expectedDisplayName);
+                }
+                if (update.getActions().contains(PlayerListItemUpdate.Action.UPDATE_LATENCY)) {
+                    item.setPing(TAB.getInstance().getFeatureManager().onLatencyChange(player, item.getUuid(), item.getPing()));
+                }
+                if (update.getActions().contains(PlayerListItemUpdate.Action.ADD_PLAYER)) {
+                    TAB.getInstance().getFeatureManager().onEntryAdd(player, item.getUuid(), item.getUsername());
+                }
+            }
+        }
+    }
+
+    @Override
+    public boolean containsEntry(@NonNull UUID entry) {
+        return uuids.contains(entry);
+    }
 }

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

@@ -1,15 +1,14 @@
 package me.neznamy.tab.platforms.bungeecord.tablist;
 
+import lombok.NonNull;
 import me.neznamy.tab.platforms.bungeecord.BungeeTabPlayer;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import net.md_5.bungee.api.chat.BaseComponent;
 import net.md_5.bungee.protocol.packet.PlayerListItem.Item;
 import net.md_5.bungee.protocol.packet.PlayerListItemRemove;
 import net.md_5.bungee.protocol.packet.PlayerListItemUpdate;
-import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
-import java.util.EnumSet;
-import java.util.UUID;
+import java.util.*;
 
 /**
  * TabList handler for 1.19.3+ players using the new tab list packets.
@@ -17,12 +16,29 @@ import java.util.UUID;
  */
 public class BungeeTabList1193 extends BungeeTabList {
 
-    public BungeeTabList1193(@NotNull BungeeTabPlayer player) {
+    /** Map of actions to prevent creating new EnumSet on each packet send */
+    private static final Map<Action, EnumSet<PlayerListItemUpdate.Action>> actions = new EnumMap<>(Action.class);
+
+    static {
+        actions.put(Action.ADD_PLAYER, EnumSet.allOf(PlayerListItemUpdate.Action.class));
+        actions.put(Action.UPDATE_GAME_MODE, EnumSet.of(PlayerListItemUpdate.Action.UPDATE_GAMEMODE));
+        actions.put(Action.UPDATE_DISPLAY_NAME, EnumSet.of(PlayerListItemUpdate.Action.UPDATE_DISPLAY_NAME));
+        actions.put(Action.UPDATE_LATENCY, EnumSet.of(PlayerListItemUpdate.Action.UPDATE_LATENCY));
+        actions.put(Action.UPDATE_LISTED, EnumSet.of(PlayerListItemUpdate.Action.UPDATE_LISTED));
+    }
+
+    /**
+     * Constructs new instance with given parameter.
+     *
+     * @param   player
+     *          Player this tablist will belong to
+     */
+    public BungeeTabList1193(@NonNull BungeeTabPlayer player) {
         super(player);
     }
 
     @Override
-    public void removeEntry(@NotNull UUID entry) {
+    public void removeEntry(@NonNull UUID entry) {
         removeUuid(entry);
         PlayerListItemRemove remove = new PlayerListItemRemove();
         remove.setUuids(new UUID[]{entry});
@@ -30,35 +46,42 @@ public class BungeeTabList1193 extends BungeeTabList {
     }
 
     @Override
-    public void updateDisplayName(@NotNull UUID entry, @Nullable IChatBaseComponent displayName) {
+    public void updateDisplayName0(@NonNull UUID entry, @Nullable BaseComponent displayName) {
         Item item = item(entry);
-        if (displayName != null) item.setDisplayName(player.getPlatform().toComponent(displayName, player.getVersion()));
-        sendPacket(EnumSet.of(PlayerListItemUpdate.Action.UPDATE_DISPLAY_NAME), item);
+        item.setDisplayName(displayName);
+        sendPacket(Action.UPDATE_DISPLAY_NAME, item);
     }
 
     @Override
-    public void updateLatency(@NotNull UUID entry, int latency) {
+    public void updateLatency(@NonNull UUID entry, int latency) {
         Item item = item(entry);
         item.setPing(latency);
-        sendPacket(EnumSet.of(PlayerListItemUpdate.Action.UPDATE_LATENCY), item);
+        sendPacket(Action.UPDATE_LATENCY, item);
     }
 
     @Override
-    public void updateGameMode(@NotNull UUID entry, int gameMode) {
+    public void updateGameMode(@NonNull UUID entry, int gameMode) {
         Item item = item(entry);
         item.setGamemode(gameMode);
-        sendPacket(EnumSet.of(PlayerListItemUpdate.Action.UPDATE_GAMEMODE), item);
+        sendPacket(Action.UPDATE_GAME_MODE, item);
     }
 
     @Override
-    public void addEntry(@NotNull Entry entry) {
-        addUuid(entry.getUniqueId());
-        sendPacket(EnumSet.allOf(PlayerListItemUpdate.Action.class), entryToItem(entry));
+    public void updateListed(@NonNull UUID entry, boolean listed) {
+        Item item = item(entry);
+        item.setListed(listed);
+        sendPacket(Action.UPDATE_LISTED, item);
     }
 
-    private void sendPacket(@NotNull EnumSet<PlayerListItemUpdate.Action> actions, @NotNull Item item) {
+    @Override
+    public void addEntry0(@NonNull UUID id, @NonNull String name, @Nullable Skin skin, boolean listed, int latency, int gameMode, @Nullable BaseComponent displayName) {
+        addUuid(id);
+        sendPacket(Action.ADD_PLAYER, entryToItem(id, name, skin, listed, latency, gameMode, displayName));
+    }
+
+    private void sendPacket(@NonNull Action action, @NonNull Item item) {
         PlayerListItemUpdate packet = new PlayerListItemUpdate();
-        packet.setActions(actions);
+        packet.setActions(actions.get(action));
         packet.setItems(new Item[]{item});
         player.sendPacket(packet);
     }

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

@@ -1,10 +1,12 @@
 package me.neznamy.tab.platforms.bungeecord.tablist;
 
+import lombok.NonNull;
 import me.neznamy.tab.platforms.bungeecord.BungeeTabPlayer;
 import me.neznamy.tab.shared.Limitations;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.chat.TabComponent;
+import net.md_5.bungee.api.chat.BaseComponent;
+import net.md_5.bungee.api.chat.TextComponent;
 import net.md_5.bungee.protocol.packet.PlayerListItem;
-import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.HashMap;
@@ -23,18 +25,24 @@ import java.util.UUID;
 public class BungeeTabList17 extends BungeeTabList {
 
     /** Because entries are identified by names and not uuids on 1.7 */
-    @NotNull
+    @NonNull
     private final Map<UUID, String> userNames = new HashMap<>();
 
-    @NotNull
-    private final Map<UUID, String> displayNames = new HashMap<>();
+    @NonNull
+    private final Map<UUID, BaseComponent> displayNames = new HashMap<>();
 
-    public BungeeTabList17(@NotNull BungeeTabPlayer player) {
+    /**
+     * Constructs new instance with given parameters.
+     *
+     * @param   player
+     *          Player this tablist will belong to
+     */
+    public BungeeTabList17(@NonNull BungeeTabPlayer player) {
         super(player);
     }
 
     @Override
-    public void removeEntry(@NotNull UUID entry) {
+    public void removeEntry(@NonNull UUID entry) {
         if (!displayNames.containsKey(entry)) return; // Entry not tracked by TAB
         removeUuid(entry);
         update(PlayerListItem.Action.REMOVE_PLAYER, createItem(null, displayNames.get(entry), 0));
@@ -45,51 +53,63 @@ public class BungeeTabList17 extends BungeeTabList {
     }
 
     @Override
-    public void updateDisplayName(@NotNull UUID entry, @Nullable IChatBaseComponent displayName) {
+    public void updateDisplayName0(@NonNull UUID entry, @Nullable BaseComponent displayName) {
         if (!displayNames.containsKey(entry)) return; // Entry not tracked by TAB
         update(PlayerListItem.Action.REMOVE_PLAYER, createItem(null, displayNames.get(entry), 0));
-        addEntry(new Entry.Builder(entry).displayName(displayName).name(userNames.get(entry)).build());
+        addEntry0(entry, userNames.get(entry), null, false, 0, 0, displayName);
     }
 
     @Override
-    public void updateLatency(@NotNull UUID entry, int latency) {
+    public void updateLatency(@NonNull UUID entry, int latency) {
         if (!displayNames.containsKey(entry)) return; // Entry not tracked by TAB
         update(PlayerListItem.Action.UPDATE_LATENCY, createItem(null, displayNames.get(entry), latency));
     }
 
     @Override
-    public void updateGameMode(@NotNull UUID entry, int gameMode) {/*Added in 1.8*/}
-
-    @Override
-    public void addEntry(@NotNull Entry entry) {
-        addUuid(entry.getUniqueId());
-        String displayNameString = entry.getDisplayName() == null ? String.valueOf(entry.getName()) : entry.getDisplayName().toLegacyText();
-        if (displayNameString.length() > Limitations.MAX_DISPLAY_NAME_LENGTH_1_7)
-            displayNameString = displayNameString.substring(0, Limitations.MAX_DISPLAY_NAME_LENGTH_1_7);
-        update(PlayerListItem.Action.ADD_PLAYER, createItem(entry.getName(), displayNameString, entry.getLatency()));
-
-        // Add to map
-        userNames.put(entry.getUniqueId(), entry.getName());
-        displayNames.put(entry.getUniqueId(), displayNameString);
+    public void updateGameMode(@NonNull UUID entry, int gameMode) {
+        // Added in 1.8
     }
 
     @Override
-    public void setPlayerListHeaderFooter(@NotNull IChatBaseComponent header, @NotNull IChatBaseComponent footer) {
+    public void updateListed(@NonNull UUID entry, boolean listed) {
+        // Added in 1.19.3
+    }
+
+    @Override
+    public void addEntry0(@NonNull UUID id, @NonNull String name, @Nullable Skin skin, boolean listed, int latency, int gameMode, @Nullable BaseComponent displayName) {
+        addUuid(id);
+        update(PlayerListItem.Action.ADD_PLAYER, createItem(name, displayName == null ? new TextComponent(name) : displayName, latency));
+
+        // Add to map
+        userNames.put(id, name);
+        displayNames.put(id, displayName);
+    }
+
+    @Override
+    public void setPlayerListHeaderFooter0(@NonNull BaseComponent header, @NonNull BaseComponent footer) {
         // Not available on 1.7
     }
 
-    private void update(@NotNull PlayerListItem.Action action, @NotNull PlayerListItem.Item item) {
+    @Override
+    public BaseComponent toComponent(@NonNull TabComponent component) {
+        String displayNameString = component.toLegacyText();
+        if (displayNameString.length() > Limitations.MAX_DISPLAY_NAME_LENGTH_1_7)
+            displayNameString = displayNameString.substring(0, Limitations.MAX_DISPLAY_NAME_LENGTH_1_7);
+        return TabComponent.optimized(displayNameString).convert(player.getVersion());
+    }
+
+    private void update(@NonNull PlayerListItem.Action action, @NonNull PlayerListItem.Item item) {
         PlayerListItem packet = new PlayerListItem();
         packet.setAction(action);
         packet.setItems(new PlayerListItem.Item[]{item});
         player.sendPacket(packet);
     }
 
-    private PlayerListItem.Item createItem(@Nullable String username, @NotNull String displayName, int latency) {
+    private PlayerListItem.Item createItem(@Nullable String username, @NonNull BaseComponent displayName, int latency) {
         PlayerListItem.Item item = new PlayerListItem.Item();
         item.setUsername(username);
         item.setPing(latency);
-        item.setDisplayName(player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(displayName), player.getVersion()));
+        item.setDisplayName(displayName);
         return item;
     }
 }

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

@@ -1,10 +1,10 @@
 package me.neznamy.tab.platforms.bungeecord.tablist;
 
+import lombok.NonNull;
 import me.neznamy.tab.platforms.bungeecord.BungeeTabPlayer;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import net.md_5.bungee.api.chat.BaseComponent;
 import net.md_5.bungee.protocol.packet.PlayerListItem;
 import net.md_5.bungee.protocol.packet.PlayerListItem.Item;
-import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.UUID;
@@ -15,44 +15,55 @@ import java.util.UUID;
  */
 public class BungeeTabList18 extends BungeeTabList {
 
-    public BungeeTabList18(@NotNull BungeeTabPlayer player) {
+    /**
+     * Constructs new instance with given parameter.
+     *
+     * @param   player
+     *          Player this tablist will belong to
+     */
+    public BungeeTabList18(@NonNull BungeeTabPlayer player) {
         super(player);
     }
 
     @Override
-    public void removeEntry(@NotNull UUID entry) {
+    public void removeEntry(@NonNull UUID entry) {
         removeUuid(entry);
         sendPacket(PlayerListItem.Action.REMOVE_PLAYER, item(entry));
     }
 
     @Override
-    public void updateDisplayName(@NotNull UUID entry, @Nullable IChatBaseComponent displayName) {
+    public void updateDisplayName0(@NonNull UUID entry, @Nullable BaseComponent displayName) {
         Item item = item(entry);
-        if (displayName != null) item.setDisplayName(player.getPlatform().toComponent(displayName, player.getVersion()));
+        item.setDisplayName(displayName);
         sendPacket(PlayerListItem.Action.UPDATE_DISPLAY_NAME, item);
     }
 
     @Override
-    public void updateLatency(@NotNull UUID entry, int latency) {
+    public void updateLatency(@NonNull UUID entry, int latency) {
         Item item = item(entry);
         item.setPing(latency);
         sendPacket(PlayerListItem.Action.UPDATE_LATENCY, item);
     }
 
     @Override
-    public void updateGameMode(@NotNull UUID entry, int gameMode) {
+    public void updateGameMode(@NonNull UUID entry, int gameMode) {
         Item item = item(entry);
         item.setGamemode(gameMode);
         sendPacket(PlayerListItem.Action.UPDATE_GAMEMODE, item);
     }
 
     @Override
-    public void addEntry(@NotNull Entry entry) {
-        addUuid(entry.getUniqueId());
-        sendPacket(PlayerListItem.Action.ADD_PLAYER, entryToItem(entry));
+    public void updateListed(@NonNull UUID entry, boolean listed) {
+        // Added in 1.19.3
     }
 
-    private void sendPacket(@NotNull PlayerListItem.Action action, @NotNull Item item) {
+    @Override
+    public void addEntry0(@NonNull UUID id, @NonNull String name, @Nullable Skin skin, boolean listed, int latency, int gameMode, @Nullable BaseComponent displayName) {
+        addUuid(id);
+        sendPacket(PlayerListItem.Action.ADD_PLAYER, entryToItem(id, name, skin, listed, latency, gameMode, displayName));
+    }
+
+    private void sendPacket(@NonNull PlayerListItem.Action action, @NonNull Item item) {
         PlayerListItem packet = new PlayerListItem();
         packet.setAction(action);
         packet.setItems(new Item[]{item});

fabric/build.gradle.kts

@@ -1,5 +1,3 @@
-val minecraftVersion = "1.20.3"
-
 plugins {
     id("fabric-loom")
 }
@@ -14,13 +12,28 @@ repositories {
 
 dependencies {
     api(projects.shared)
-    minecraft("com.mojang:minecraft:$minecraftVersion")
+    minecraft("com.mojang:minecraft:24w19a")
     mappings(loom.officialMojangMappings())
     modImplementation("me.lucko:fabric-permissions-api:0.2-SNAPSHOT")
-    modImplementation("net.fabricmc:fabric-loader:0.14.17")
-    val version = "0.90.4+1.20.3"
+    modImplementation("net.fabricmc:fabric-loader:0.15.9")
+    val version = "0.97.8+1.20.6"
     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))
-}
+    modImplementation(fabricApi.module("fabric-command-api-v1", "0.77.0+1.18.2"))
+    modImplementation(fabricApi.module("fabric-command-api-v2", version))
+}
+
+loom {
+    accessWidenerPath.set(file("src/main/resources/resources/tab.accesswidener"))
+}
+
+tasks {
+    compileJava {
+        options.release.set(17)
+    }
+    validateAccessWidener {
+        enabled = true
+    }
+}

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

@@ -3,7 +3,7 @@ package me.neznamy.tab.platforms.fabric;
 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.chat.TabComponent;
 import me.neznamy.tab.shared.platform.BossBar;
 import net.minecraft.server.level.ServerBossEvent;
 import net.minecraft.world.BossEvent.BossBarColor;
@@ -14,19 +14,24 @@ import java.util.HashMap;
 import java.util.Map;
 import java.util.UUID;
 
+/**
+ * BossBar implementation for Fabric using packets.
+ */
 @RequiredArgsConstructor
 public class FabricBossBar implements BossBar {
 
+    /** Player this BossBar belongs to */
     @NotNull
     private final FabricTabPlayer player;
 
+    /** Map of BossBars visible to the player */
     @NotNull
     private final Map<UUID, ServerBossEvent> bars = new HashMap<>();
 
     @Override
     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()),
+                TabComponent.optimized(title).convert(player.getVersion()),
                 BossBarColor.valueOf(color.name()),
                 BossBarOverlay.valueOf(style.name())
         );
@@ -37,7 +42,7 @@ public class FabricBossBar implements BossBar {
 
     @Override
     public void update(@NotNull UUID id, @NotNull String title) {
-        bars.get(id).setName(player.getPlatform().toComponent(IChatBaseComponent.optimizedComponent(title), player.getVersion()));
+        bars.get(id).setName(TabComponent.optimized(title).convert(player.getVersion()));
     }
 
     @Override

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

@@ -1,37 +1,55 @@
 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 me.neznamy.tab.shared.util.ReflectionUtils;
+import net.minecraft.network.protocol.Packet;
 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.Arrays;
 import java.util.UUID;
 
-@RequiredArgsConstructor
+/**
+ * EntityView implementation for Fabric using packets.
+ */
 public class FabricEntityView implements EntityView {
 
+    /** Player this view belongs to */
+    @NotNull
     private final FabricTabPlayer player;
 
     @NotNull
-    private static final ArmorStand dummyEntity = new ArmorStand(null, 0, 0, 0);
+    private final ArmorStand dummyEntity;
+
+    /**
+     * Constructs new instance.
+     *
+     * @param   player
+     *          Player this view will belong to
+     */
+    public FabricEntityView(@NotNull FabricTabPlayer player) {
+        this.player = player;
+
+        // Make level not null, because some mods hacking deep into the server code cause NPE
+        dummyEntity = new ArmorStand(FabricMultiVersion.getLevel(player.getPlayer()), 0, 0, 0);
+    }
 
     @Override
     public void spawnEntity(int entityId, @NotNull UUID id, @NotNull Object entityType, @NotNull Location location,
                             @NotNull EntityData data) {
-        player.sendPacket(FabricTAB.getVersion().spawnEntity(entityId, id, entityType, location));
-        updateEntityMetadata(entityId, data);
+        FabricMultiVersion.sendPackets(player.getPlayer(), Arrays.asList(
+                FabricMultiVersion.spawnEntity(FabricMultiVersion.getLevel(player.getPlayer()), entityId, id, entityType, location),
+                FabricMultiVersion.newEntityMetadata(entityId, data)
+        ));
     }
 
     @Override
     public void updateEntityMetadata(int entityId, @NotNull EntityData data) {
-        player.sendPacket(FabricTAB.getVersion().newEntityMetadata(entityId, data));
+        player.sendPacket(FabricMultiVersion.newEntityMetadata(entityId, data));
     }
 
     @Override
@@ -43,7 +61,7 @@ public class FabricEntityView implements EntityView {
 
     @Override
     public void destroyEntities(int... entities) {
-        FabricTAB.getVersion().destroyEntities(player, entities);
+        player.sendPacket(new ClientboundRemoveEntitiesPacket(entities));
     }
 
     @Override
@@ -58,7 +76,7 @@ public class FabricEntityView implements EntityView {
 
     @Override
     public boolean isNamedEntitySpawnPacket(@NotNull Object packet) {
-        return FabricTAB.getVersion().isSpawnPlayerPacket(packet);
+        return FabricMultiVersion.isSpawnPlayerPacket((Packet<?>) packet);
     }
 
     @Override
@@ -72,35 +90,50 @@ public class FabricEntityView implements EntityView {
     }
 
     @Override
-    @SneakyThrows
     public int getTeleportEntityId(@NotNull Object teleportPacket) {
-        // 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);
+        return ((ClientboundTeleportEntityPacket)teleportPacket).id;
     }
 
     @Override
-    @SneakyThrows
     public int getMoveEntityId(@NotNull Object movePacket) {
-        return (int) ReflectionUtils.getFields(ClientboundMoveEntityPacket.class, int.class).get(0).get(movePacket);
+        return ((ClientboundMoveEntityPacket)movePacket).entityId;
     }
 
     @Override
     public int getSpawnedPlayer(@NotNull Object playerSpawnPacket) {
-        return FabricTAB.getVersion().getSpawnedPlayer(playerSpawnPacket);
+        return FabricMultiVersion.getSpawnedPlayerId((Packet<?>) playerSpawnPacket);
     }
 
     @Override
     public int[] getDestroyedEntities(@NotNull Object destroyPacket) {
-        return FabricTAB.getVersion().getDestroyedEntities(destroyPacket);
+        return FabricMultiVersion.getDestroyedEntities((Packet<?>) destroyPacket);
     }
 
     @Override
     public boolean isBundlePacket(@NotNull Object packet) {
-        return FabricTAB.getVersion().isBundlePacket(packet);
+        return FabricMultiVersion.isBundlePacket((Packet<?>) packet);
     }
 
     @Override
     public Iterable<Object> getPackets(@NotNull Object bundlePacket) {
-        return FabricTAB.getVersion().getPackets(bundlePacket);
+        return FabricMultiVersion.getBundledPackets((Packet<?>) bundlePacket);
+    }
+
+    @Override
+    @NotNull
+    public Location getMoveDiff(@NotNull Object movePacket) {
+        ClientboundMoveEntityPacket packet = (ClientboundMoveEntityPacket) movePacket;
+        return new Location(packet.xa, packet.ya, packet.za);
+    }
+
+    @Override
+    public void moveEntity(int entityId, @NotNull Location moveDiff) {
+        player.sendPacket(new ClientboundMoveEntityPacket.Pos(
+                entityId,
+                (short) moveDiff.getX(),
+                (short) moveDiff.getY(),
+                (short) moveDiff.getZ(),
+                false
+        ));
     }
 }

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

@@ -1,31 +1,37 @@
 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 me.neznamy.tab.shared.util.ReflectionUtils;
 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;
 
-public class FabricEventListener extends EventListener<ServerPlayer> {
+/**
+ * Event listener for Fabric.
+ */
+public class FabricEventListener implements EventListener<ServerPlayer> {
 
+    /**
+     * Registers all event listeners.
+     */
     public void register() {
         ServerPlayConnectionEvents.DISCONNECT.register((connection, $) -> quit(connection.player.getUUID()));
         ServerPlayConnectionEvents.JOIN.register((connection, $, $$) -> join(connection.player));
         //TODO command preprocess
-        if (ProtocolVersion.fromFriendlyName(FabricTAB.getVersion().getServerVersion()).getMinorVersion() >= 16) {
+        if (ReflectionUtils.classExists("net.fabricmc.fabric.api.entity.event.v1.ServerPlayerEvents")) {
             // 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)));
+                        worldChange(newPlayer.getUUID(), FabricMultiVersion.getLevelName(FabricMultiVersion.getLevel(newPlayer)));
                     });
             ServerEntityWorldChangeEvents.AFTER_PLAYER_CHANGE_WORLD.register(
-                    (player, origin, destination) -> worldChange(player.getUUID(), FabricTAB.getVersion().getName(destination)));
+                    (player, origin, destination) -> worldChange(player.getUUID(), FabricMultiVersion.getLevelName(destination)));
         } // TODO else
     }
 

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

@@ -0,0 +1,571 @@
+package me.neznamy.tab.platforms.fabric;
+
+import com.mojang.authlib.properties.Property;
+import io.netty.channel.Channel;
+import lombok.SneakyThrows;
+import me.neznamy.tab.platforms.fabric.loader.Loader;
+import me.neznamy.tab.platforms.fabric.loader.Loader_1_20_5;
+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.ChatModifier;
+import me.neznamy.tab.shared.chat.TabComponent;
+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.chat.Style;
+import net.minecraft.network.protocol.Packet;
+import net.minecraft.network.protocol.game.ClientGamePacketListener;
+import net.minecraft.network.protocol.game.ClientboundSetDisplayObjectivePacket;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.level.ServerPlayer;
+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.RenderType;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.UUID;
+
+/**
+ * Class managing cross-version code in shared module.
+ */
+public class FabricMultiVersion {
+
+    /** Server version */
+    private static final ProtocolVersion serverVersion = ProtocolVersion.fromFriendlyName(FabricTAB.minecraftVersion);
+
+    /** Method loader using latest supported MC version */
+    private static final Loader loaderNew = new Loader_1_20_5();
+
+    /** Method loader using 1.18.2 */
+    private static final Loader loader1_18_2 = createLoader("1_18_2");
+
+    /** Method loader using 1.14.4 */
+    private static final Loader loader1_14_4 = createLoader("1_14_4");
+
+    @SneakyThrows
+    private static Loader createLoader(@NotNull String version) {
+        return (Loader) Class.forName("me.neznamy.tab.platforms.fabric.loader.Loader_" + version)
+                .getConstructor(ProtocolVersion.class).newInstance(serverVersion);
+    }
+
+    /**
+     * Returns {@code true} if player is sneaking, {@code false} if not.
+     *
+     * @param   player
+     *          Player to check sneak status of
+     * @return  {@code true} if player is sneaking, {@code false} if not
+     */
+    public static boolean isSneaking(@NotNull ServerPlayer player) {
+        if (serverVersion.getMinorVersion() >= 15) return loaderNew.isSneaking(player);
+        return loader1_14_4.isSneaking(player);
+    }
+
+    /**
+     * Returns name of specified world.
+     *
+     * @param   level
+     *          World to get name of
+     * @return  Name of the world
+     */
+    @NotNull
+    public static String getLevelName(@NotNull Level level) {
+        if (serverVersion.getMinorVersion() >= 16) return loaderNew.getLevelName(level);
+        return loader1_14_4.getLevelName(level);
+    }
+
+    /**
+     * Adds sibling to a component.
+     *
+     * @param   parent
+     *          Parent to add sibling to
+     * @param   child
+     *          Sibling to add
+     */
+    public static void addSibling(@NotNull Component parent, @NotNull Component child) {
+        if (serverVersion.getMinorVersion() >= 16) loaderNew.addSibling(parent, child);
+        else loader1_14_4.addSibling(parent, child);
+    }
+
+    /**
+     * Converts TAB's ChatModifier class to Minecraft Style class.
+     *
+     * @param   modifier
+     *          Modifier to convert
+     * @param   modern
+     *          Whether RGB should be supported or not
+     * @return  Converted style
+     */
+    @NotNull
+    public static Style convertModifier(@NotNull ChatModifier modifier, boolean modern) {
+        if (serverVersion.getMinorVersion() >= 16) return loaderNew.convertModifier(modifier, modern);
+        return loader1_14_4.convertModifier(modifier, modern);
+    }
+
+    /**
+     * Creates new Header/Footer packet with given parameters.
+     *
+     * @param   header
+     *          Header to use
+     * @param   footer
+     *          Footer to use
+     * @return  Packet with given parameters
+     */
+    @NotNull
+    public static Packet<?> newHeaderFooter(@NotNull Component header, @NotNull Component footer) {
+        if (serverVersion.getMinorVersion() >= 17) return loaderNew.newHeaderFooter(header, footer);
+        return loader1_14_4.newHeaderFooter(header, footer);
+    }
+
+    /**
+     * Checks outgoing team packet in pipeline to potentially remove players from it.
+     *
+     * @param   packet
+     *          Packet to check
+     * @param   scoreboard
+     *          Scoreboard of player who received the packet
+     */
+    public static void checkTeamPacket(@NotNull Packet<?> packet, @NotNull FabricScoreboard scoreboard) {
+        if (serverVersion.getMinorVersion() >= 17) loaderNew.checkTeamPacket(packet, scoreboard);
+        else loader1_14_4.checkTeamPacket(packet, scoreboard);
+    }
+
+    /**
+     * Creates team register packet using given team.
+     *
+     * @param   team
+     *          Team to register
+     * @return  Team register packet using given team
+     */
+    @NotNull
+    public static Packet<?> registerTeam(@NotNull PlayerTeam team) {
+        if (serverVersion.getMinorVersion() >= 17) return loaderNew.registerTeam(team);
+        return loader1_14_4.registerTeam(team);
+    }
+
+    /**
+     * Creates team unregister packet using given team.
+     *
+     * @param   team
+     *          Team to unregister
+     * @return  Team unregister packet using given team
+     */
+    @NotNull
+    public static Packet<?> unregisterTeam(@NotNull PlayerTeam team) {
+        if (serverVersion.getMinorVersion() >= 17) return loaderNew.unregisterTeam(team);
+        return loader1_14_4.unregisterTeam(team);
+    }
+
+    /**
+     * Creates team update packet using given team.
+     *
+     * @param   team
+     *          Team to update
+     * @return  Team update packet using given team
+     */
+    @NotNull
+    public static Packet<?> updateTeam(@NotNull PlayerTeam team) {
+        if (serverVersion.getMinorVersion() >= 17) return loaderNew.updateTeam(team);
+        return loader1_14_4.updateTeam(team);
+    }
+
+    /**
+     * Returns destroyed entities from destroy entity packet.
+     *
+     * @param   destroyPacket
+     *          Entity destroy packet
+     * @return  Destroyed entities
+     */
+    public static int[] getDestroyedEntities(@NotNull Packet<?> destroyPacket) {
+        if (serverVersion.getMinorVersion() >= 17) return loaderNew.getDestroyedEntities(destroyPacket);
+        return loader1_14_4.getDestroyedEntities(destroyPacket);
+    }
+
+    /**
+     * Logs console message as info.
+     *
+     * @param   message
+     *          Message to log
+     */
+    public static void logInfo(@NotNull TabComponent message) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_18_2.getNetworkId()) loaderNew.logInfo(message);
+        else loader1_14_4.logInfo(message);
+    }
+
+    /**
+     * Logs console message as warn.
+     *
+     * @param   message
+     *          Message to log
+     */
+    public static void logWarn(@NotNull TabComponent message) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_18_2.getNetworkId()) loaderNew.logWarn(message);
+        else loader1_14_4.logWarn(message);
+    }
+
+    /**
+     * Creates new text component using given text.
+     *
+     * @param   text
+     *          Component text
+     * @return  Text component with given text
+     */
+    @NotNull
+    public static Component newTextComponent(@NotNull String text) {
+        if (serverVersion.getMinorVersion() >= 19) return loaderNew.newTextComponent(text);
+        return loader1_14_4.newTextComponent(text);
+    }
+
+    /**
+     * Sends message to command source.
+     *
+     * @param   source
+     *          Command source to send message to
+     * @param   message
+     *          Message to send
+     */
+    public static void sendMessage(@NotNull CommandSourceStack source, @NotNull Component message) {
+        if (serverVersion.getMinorVersion() >= 19) loaderNew.sendMessage(source, message);
+        else loader1_14_4.sendMessage(source, message);
+    }
+
+    /**
+     * Creates spawn entity packet with given parameters.
+     *
+     * @param   level
+     *          World to fill for dummy entity
+     * @param   id
+     *          Entity ID
+     * @param   uuid
+     *          Entity UUID
+     * @param   type
+     *          Entity type
+     * @param   location
+     *          Spawn location
+     * @return  Spawn entity packet with given parameters
+     */
+    @NotNull
+    public static Packet<ClientGamePacketListener> spawnEntity(@NotNull Level level, int id, @NotNull UUID uuid, @NotNull Object type, @NotNull Location location) {
+        if (serverVersion.getMinorVersion() >= 19) return loaderNew.spawnEntity(level, id, uuid, type, location);
+        return loader1_14_4.spawnEntity(level, id, uuid, type, location);
+    }
+
+    /**
+     * Sets style in a component to specified style.
+     *
+     * @param   component
+     *          Component to change style of
+     * @param   style
+     *          Style to use
+     */
+    @SneakyThrows
+    public static void setStyle(@NotNull Component component, @NotNull Style style) {
+        if (serverVersion.getMinorVersion() >= 19) loaderNew.setStyle(component, style);
+        else if (serverVersion.getMinorVersion() >= 16) loader1_18_2.setStyle(component, style);
+        else loader1_14_4.setStyle(component, style);
+    }
+
+    /**
+     * Sends message to player.
+     *
+     * @param   player
+     *          Player to send message to
+     * @param   message
+     *          Message to send
+     */
+    @SneakyThrows
+    public static void sendMessage(@NotNull ServerPlayer player, @NotNull Component message) {
+        if (serverVersion.getMinorVersion() >= 19) loaderNew.sendMessage(player, message);
+        else if (serverVersion.getMinorVersion() >= 16) loader1_18_2.sendMessage(player, message);
+        else loader1_14_4.sendMessage(player, message);
+    }
+
+    /**
+     * Creates entity metadata packet with given metadata.
+     *
+     * @param   entityId
+     *          Entity ID to change metadata of
+     * @param   data
+     *          Metadata to change
+     * @return  Entity metadata packet with given parameters
+     */
+    @NotNull
+    public static Packet<ClientGamePacketListener> newEntityMetadata(int entityId, @NotNull EntityData data) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_19_3.getNetworkId()) return loaderNew.newEntityMetadata(entityId, data);
+        return loader1_14_4.newEntityMetadata(entityId, data);
+    }
+
+    /**
+     * Creates entity data with given parameters.
+     *
+     * @param   viewer
+     *          Viewer of custom name
+     * @param   flags
+     *          Entity flags
+     * @param   displayName
+     *          Custom name
+     * @param   nameVisible
+     *          Custom name visibility
+     * @return  Entity data with given parameters
+     */
+    @NotNull
+    public static EntityData createDataWatcher(@NotNull TabPlayer viewer, byte flags, @NotNull String displayName, boolean nameVisible) {
+        int position = EntityData.getArmorStandFlagsPosition(serverVersion.getMinorVersion());
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_19_3.getNetworkId()) return loaderNew.createDataWatcher(viewer, flags, displayName, nameVisible, position);
+        return loader1_14_4.createDataWatcher(viewer, flags, displayName, nameVisible, position);
+    }
+
+    /**
+     * Returns {@code true} if packet is player info packet, {@code false} if not.
+     *
+     * @param   packet
+     *          Packet to check
+     * @return  {@code true} if packet is player info packet, {@code false} if not
+     */
+    public static boolean isPlayerInfo(@NotNull Packet<?> packet) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_19_3.getNetworkId()) return loaderNew.isPlayerInfo(packet);
+        return loader1_14_4.isPlayerInfo(packet);
+    }
+
+    /**
+     * Processed player info packet for anti-override and similar.
+     *
+     * @param   receiver
+     *          Player who received the packet
+     * @param   packet
+     *          Received packet
+     */
+    public static void onPlayerInfo(@NotNull TabPlayer receiver, @NotNull Object packet) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_19_3.getNetworkId()) loaderNew.onPlayerInfo(receiver, packet);
+        else if (serverVersion.getMinorVersion() >= 17) loader1_18_2.onPlayerInfo(receiver, packet);
+        else loader1_14_4.onPlayerInfo(receiver, packet);
+    }
+
+    /**
+     * Creates tablist entry packet using given parameters.
+     *
+     * @param   action
+     *          Tablist action
+     * @param   builder
+     *          Entry data
+     * @return  Tablist entry packet with given parameters
+     */
+    @NotNull
+    public static Packet<?> buildTabListPacket(@NotNull TabList.Action action, @NotNull FabricTabList.Builder builder) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_19_3.getNetworkId()) return loaderNew.buildTabListPacket(action, builder);
+        else if (serverVersion.getMinorVersion() >= 17) return loader1_18_2.buildTabListPacket(action, builder);
+        return loader1_14_4.buildTabListPacket(action, builder);
+    }
+
+    /**
+     * Returns {@code true} if packet is bundle packet, {@code false} if not.
+     *
+     * @param   packet
+     *          Packet to check
+     * @return  {@code true} if packet is bundle packet, {@code false} if not
+     */
+    public static boolean isBundlePacket(@NotNull Packet<?> packet) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_19_4.getNetworkId()) return loaderNew.isBundlePacket(packet);
+        return loader1_14_4.isBundlePacket(packet);
+    }
+
+    /**
+     * Returns packets bundled in given bundle packet.
+     *
+     * @param   bundlePacket
+     *          Bundle packet
+     * @return  Bundled packets
+     */
+    @NotNull
+    public static Iterable<Object> getBundledPackets(@NotNull Packet<?> bundlePacket) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_19_4.getNetworkId()) return loaderNew.getBundledPackets(bundlePacket);
+        return loader1_14_4.getBundledPackets(bundlePacket);
+    }
+
+    /**
+     * Sends packets to player as a bundle.
+     *
+     * @param   player
+     *          Player to send packets to
+     * @param   packets
+     *          Packets to send
+     */
+    public static void sendPackets(@NotNull ServerPlayer player, @NotNull Iterable<Packet<ClientGamePacketListener>> packets) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_19_4.getNetworkId()) loaderNew.sendPackets(player, packets);
+        else loader1_14_4.sendPackets(player, packets);
+    }
+
+    /**
+     * Returns player's world
+     *
+     * @param   player
+     *          Player to get world of
+     * @return  Player's world
+     */
+    @NotNull
+    public static Level getLevel(@NotNull ServerPlayer player) {
+        if (serverVersion.getMinorVersion() >= 20) return loaderNew.getLevel(player);
+        return loader1_14_4.getLevel(player);
+    }
+
+    /**
+     * Converts minecraft property class into TAB skin class.
+     *
+     * @param   property
+     *          Property to convert
+     * @return  Converted skin
+     */
+    @NotNull
+    public static TabList.Skin propertyToSkin(@NotNull Property property) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_20_2.getNetworkId()) return loaderNew.propertyToSkin(property);
+        return loader1_14_4.propertyToSkin(property);
+    }
+
+    /**
+     * Returns {@code true} if packet is player spawn packet, {@code false} if not.
+     *
+     * @param   packet
+     *          Packet to check
+     * @return  {@code true} if packet is player spawn packet, {@code false} if not
+     */
+    public static boolean isSpawnPlayerPacket(@NotNull Packet<?> packet) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_20_2.getNetworkId()) return loaderNew.isSpawnPlayerPacket(packet);
+        return loader1_14_4.isSpawnPlayerPacket(packet);
+    }
+
+    /**
+     * Returns player ID of given player spawn packet.
+     *
+     * @param   packet
+     *          Player spawn packet
+     * @return  Player ID
+     */
+    public static int getSpawnedPlayerId(@NotNull Packet<?> packet) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_20_2.getNetworkId()) return loaderNew.getSpawnedPlayerId(packet);
+        return loader1_14_4.getSpawnedPlayerId(packet);
+    }
+
+    /**
+     * Returns player's ping.
+     *
+     * @param   player
+     *          Player to get ping of
+     * @return  Player's ping
+     */
+    public static int getPing(@NotNull ServerPlayer player) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_20_2.getNetworkId()) return loaderNew.getPing(player);
+        return loader1_14_4.getPing(player);
+    }
+
+    /**
+     * Returns display slot of given display objective packet.
+     *
+     * @param   packet
+     *          Display objective packet
+     * @return  Display slot of packet
+     */
+    public static int getDisplaySlot(@NotNull ClientboundSetDisplayObjectivePacket packet) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_20_2.getNetworkId()) return loaderNew.getDisplaySlot(packet);
+        return loader1_14_4.getDisplaySlot(packet);
+    }
+
+    /**
+     * Creates display objective packet with given parameters.
+     *
+     * @param   slot
+     *          Display slot
+     * @param   objective
+     *          Objective to display
+     * @return  Display objective packet with given parameters
+     */
+    @NotNull
+    public static Packet<?> setDisplaySlot(int slot, @NotNull Objective objective) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_20_2.getNetworkId()) return loaderNew.setDisplaySlot(slot, objective);
+        return loader1_14_4.setDisplaySlot(slot, objective);
+    }
+
+    /**
+     * Returns player's network channel.
+     *
+     * @param   player
+     *          Player to get channel of
+     * @return  Player's channel
+     */
+    @NotNull
+    public static Channel getChannel(@NotNull ServerPlayer player) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_20_2.getNetworkId()) return loaderNew.getChannel(player);
+        return loader1_14_4.getChannel(player);
+    }
+
+    /**
+     * Returns server's current milliseconds per tick.
+     *
+     * @param   server
+     *          Server to get MSPT value from
+     * @return  Server's milliseconds per tick
+     */
+    public static float getMSPT(@NotNull MinecraftServer server) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_20_3.getNetworkId()) return loaderNew.getMSPT(server);
+        return loader1_14_4.getMSPT(server);
+    }
+
+    /**
+     * Creates new remove score packet with given parameters.
+     *
+     * @param   objective
+     *          Objective to remove score from
+     * @param   holder
+     *          Score holder to remove
+     * @return  Remove score packet with given parameters
+     */
+    @NotNull
+    public static Packet<?> removeScore(@NotNull String objective, @NotNull String holder) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_20_3.getNetworkId()) return loaderNew.removeScore(objective, holder);
+        return loader1_14_4.removeScore(objective, holder);
+    }
+
+    /**
+     * Creates new objective with given parameters.
+     *
+     * @param   name
+     *          Objective name
+     * @param   displayName
+     *          Objective display name
+     * @param   renderType
+     *          Score render type
+     * @param   numberFormat
+     *          Score number format (1.20.3+)
+     * @return  New objective with given parameters
+     */
+    @NotNull
+    public static Objective newObjective(@NotNull String name, @NotNull Component displayName,
+                                         @NotNull RenderType renderType, @Nullable Component numberFormat) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_20_3.getNetworkId()) return loaderNew.newObjective(name, displayName, renderType, numberFormat);
+        return loader1_14_4.newObjective(name, displayName, renderType, numberFormat);
+    }
+
+    /**
+     * Creates a new set score packet with given parameters.
+     *
+     * @param   objective
+     *          Objective to set score in
+     * @param   holder
+     *          Score holder
+     * @param   score
+     *          Score value
+     * @param   displayName
+     *          Display name of score holder (1.20.3+)
+     * @param   numberFormat
+     *          Number format of score value (1.20.3+)
+     * @return  New set score packet with given parameters
+     */
+    @NotNull
+    public static Packet<?> setScore(@NotNull String objective, @NotNull String holder, int score,
+                                     @Nullable Component displayName, @Nullable Component numberFormat) {
+        if (serverVersion.getNetworkId() >= ProtocolVersion.V1_20_3.getNetworkId()) return loaderNew.setScore(objective, holder, score, displayName, numberFormat);
+        return loader1_14_4.setScore(objective, holder, score, displayName, numberFormat);
+    }
+}

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

@@ -0,0 +1,25 @@
+package me.neznamy.tab.platforms.fabric;
+
+import io.netty.channel.Channel;
+import me.neznamy.tab.shared.features.injection.NettyPipelineInjector;
+import me.neznamy.tab.shared.platform.TabPlayer;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Pipeline injector for Fabric.
+ */
+public class FabricPipelineInjector extends NettyPipelineInjector {
+
+    /**
+     * Constructs new instance.
+     */
+    public FabricPipelineInjector() {
+        super("packet_handler");
+    }
+
+    @Override
+    @NotNull
+    protected Channel getChannel(@NotNull TabPlayer player) {
+        return FabricMultiVersion.getChannel(((FabricTabPlayer)player).getPlayer());
+    }
+}

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

@@ -2,20 +2,20 @@ 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;
 import me.neznamy.tab.shared.TabConstants;
 import me.neznamy.tab.shared.backend.BackendPlatform;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.chat.SimpleComponent;
+import me.neznamy.tab.shared.chat.StructuredComponent;
+import me.neznamy.tab.shared.chat.TabComponent;
 import me.neznamy.tab.shared.features.injection.PipelineInjector;
 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.commands.CommandSourceStack;
@@ -34,10 +34,15 @@ import java.io.File;
 @Getter
 public class FabricPlatform implements BackendPlatform {
 
-    private static final boolean fabricPermissionsApi = FabricLoader.getInstance().isModLoaded("fabric-permissions-api-v0");
-
+    /** Minecraft server reference */
     private final MinecraftServer server;
 
+    /** Flag tracking presence of permission API */
+    private final boolean fabricPermissionsApi = FabricLoader.getInstance().isModLoaded("fabric-permissions-api-v0");
+
+    /** Server version */
+    private final ProtocolVersion serverVersion = ProtocolVersion.fromFriendlyName(FabricTAB.minecraftVersion);
+
     @Override
     public void registerUnknownPlaceholder(@NotNull String identifier) {
         registerDummyPlaceholder(identifier);
@@ -53,7 +58,7 @@ public class FabricPlatform implements BackendPlatform {
     @Override
     @NotNull
     public PipelineInjector createPipelineInjector() {
-        return FabricTAB.getVersion().createPipelineInjector();
+        return new FabricPipelineInjector();
     }
 
     @Override
@@ -75,34 +80,19 @@ public class FabricPlatform implements BackendPlatform {
     }
 
     @Override
-    @SneakyThrows
-    public void logInfo(@NotNull IChatBaseComponent message) {
-        Object logger = getLogger();
-        logger.getClass().getMethod("info", String.class).invoke(logger, message.toRawText());
+    public void logInfo(@NotNull TabComponent message) {
+        FabricMultiVersion.logInfo(message);
     }
 
     @Override
-    @SneakyThrows
-    public void logWarn(@NotNull IChatBaseComponent message) {
-        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);
+    public void logWarn(@NotNull TabComponent message) {
+        FabricMultiVersion.logWarn(message);
     }
 
     @Override
     @NotNull
     public String getServerVersionInfo() {
-        return "[Fabric] " + FabricTAB.getVersion().getServerVersion();
+        return "[Fabric] " + FabricTAB.minecraftVersion;
     }
 
     @Override
@@ -120,29 +110,24 @@ public class FabricPlatform implements BackendPlatform {
         // Not available
     }
 
-    @Override
-    @NotNull
-    public ProtocolVersion getServerVersion() {
-        return ProtocolVersion.fromFriendlyName(FabricTAB.getVersion().getServerVersion());
-    }
-
     @Override
     @NotNull
     public File getDataFolder() {
         return FabricLoader.getInstance().getConfigDir().resolve(TabConstants.PLUGIN_ID).toFile();
     }
 
-    /**
-     * 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 Component toComponent(@NotNull IChatBaseComponent component, @NotNull ProtocolVersion version) {
-        return FabricTAB.getVersion().deserialize(component.toString(version));
+    @Override
+    public Component convertComponent(@NotNull TabComponent component, boolean modern) {
+        if (component instanceof SimpleComponent) return FabricMultiVersion.newTextComponent(((SimpleComponent) component).getText());
+
+        StructuredComponent component1 = (StructuredComponent) component;
+        Component nmsComponent = FabricMultiVersion.newTextComponent(component1.getText());
+
+        FabricMultiVersion.setStyle(nmsComponent, FabricMultiVersion.convertModifier(component1.getModifier(), modern));
+        for (StructuredComponent extra : component1.getExtra()) {
+            FabricMultiVersion.addSibling(nmsComponent, convertComponent(extra, modern));
+        }
+        return nmsComponent;
     }
 
     @Override
@@ -152,9 +137,18 @@ public class FabricPlatform implements BackendPlatform {
 
     @Override
     public double getMSPT() {
-        return FabricTAB.getVersion().getMSPT();
+        return FabricMultiVersion.getMSPT(server);
     }
 
+    /**
+     * Checks for permission and returns the result.
+     *
+     * @param   source
+     *          Source to check permission of
+     * @param   permission
+     *          Permission node to check
+     * @return  {@code true} if has permission, {@code false} if not
+     */
     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

@@ -1,59 +1,70 @@
 package me.neznamy.tab.platforms.fabric;
 
+import lombok.NonNull;
+import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.chat.EnumChatFormat;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.chat.TabComponent;
 import me.neznamy.tab.shared.platform.Scoreboard;
 import net.minecraft.ChatFormatting;
 import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.Packet;
+import net.minecraft.network.protocol.game.ClientboundSetDisplayObjectivePacket;
 import net.minecraft.network.protocol.game.ClientboundSetObjectivePacket;
 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.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> {
+/**
+ * Scoreboard implementation for Fabric using packets.
+ */
+public class FabricScoreboard extends Scoreboard<FabricTabPlayer, Component> {
 
-    @NotNull
     private static final net.minecraft.world.scores.Scoreboard dummyScoreboard = new net.minecraft.world.scores.Scoreboard();
 
     private final Map<String, Objective> objectives = new HashMap<>();
 
+    /**
+     * Constructs new instance with given player.
+     *
+     * @param   player
+     *          Player this scoreboard will belong to
+     */
     public FabricScoreboard(FabricTabPlayer player) {
         super(player);
     }
 
     @Override
-    public void setDisplaySlot0(int slot, @NotNull String objective) {
-        player.sendPacket(FabricTAB.getVersion().setDisplaySlot(slot, objectives.get(objective)));
+    public void setDisplaySlot0(int slot, @NonNull String objective) {
+        player.sendPacket(FabricMultiVersion.setDisplaySlot(slot, objectives.get(objective)));
     }
 
     @Override
-    public void registerObjective0(@NotNull String objectiveName, @NotNull String title, int display,
-                                   @Nullable IChatBaseComponent numberFormat) {
-        Objective obj = FabricTAB.getVersion().newObjective(
+    public void registerObjective0(@NonNull String objectiveName, @NonNull String title, int display,
+                                   @Nullable Component numberFormat) {
+        Objective obj = FabricMultiVersion.newObjective(
                 objectiveName,
                 toComponent(title),
                 RenderType.values()[display],
-                numberFormat == null ? null : toComponent(numberFormat)
+                numberFormat
         );
         objectives.put(objectiveName, obj);
         player.sendPacket(new ClientboundSetObjectivePacket(obj, ObjectiveAction.REGISTER));
     }
 
     @Override
-    public void unregisterObjective0(@NotNull String objectiveName) {
+    public void unregisterObjective0(@NonNull String objectiveName) {
         player.sendPacket(new ClientboundSetObjectivePacket(objectives.remove(objectiveName), ObjectiveAction.UNREGISTER));
     }
 
     @Override
-    public void updateObjective0(@NotNull String objectiveName, @NotNull String title, int display,
-                                 @Nullable IChatBaseComponent numberFormat) {
+    public void updateObjective0(@NonNull String objectiveName, @NonNull String title, int display,
+                                 @Nullable Component numberFormat) {
         Objective obj = objectives.get(objectiveName);
         obj.setDisplayName(toComponent(title));
         obj.setRenderType(RenderType.values()[display]);
@@ -61,64 +72,67 @@ public class FabricScoreboard extends Scoreboard<FabricTabPlayer> {
     }
 
     @Override
-    public void registerTeam0(@NotNull String name, @NotNull String prefix, @NotNull String suffix,
-                              @NotNull NameVisibility visibility, @NotNull CollisionRule collision,
-                              @NotNull Collection<String> players, int options) {
+    public void registerTeam0(@NonNull String name, @NonNull String prefix, @NonNull String suffix,
+                              @NonNull NameVisibility visibility, @NonNull CollisionRule collision,
+                              @NonNull Collection<String> players, int options, @NonNull EnumChatFormat color) {
         PlayerTeam team = new PlayerTeam(dummyScoreboard, name);
         team.setAllowFriendlyFire((options & 0x01) > 0);
         team.setSeeFriendlyInvisibles((options & 0x02) > 0);
-        team.setColor(ChatFormatting.valueOf(EnumChatFormat.lastColorsOf(prefix).name()));
+        team.setColor(ChatFormatting.valueOf(color.name()));
         team.setCollisionRule(Team.CollisionRule.valueOf(collision.name()));
         team.setNameTagVisibility(Team.Visibility.valueOf(visibility.name()));
         team.setPlayerPrefix(toComponent(prefix));
         team.setPlayerSuffix(toComponent(suffix));
         team.getPlayers().addAll(players);
-        player.sendPacket(FabricTAB.getVersion().registerTeam(team));
+        player.sendPacket(FabricMultiVersion.registerTeam(team));
     }
 
     @Override
-    public void unregisterTeam0(@NotNull String name) {
-        player.sendPacket(FabricTAB.getVersion().unregisterTeam(new PlayerTeam(dummyScoreboard, name)));
+    public void unregisterTeam0(@NonNull String name) {
+        player.sendPacket(FabricMultiVersion.unregisterTeam(new PlayerTeam(dummyScoreboard, name)));
     }
 
     @Override
-    public void updateTeam0(@NotNull String name, @NotNull String prefix, @NotNull String suffix,
-                            @NotNull NameVisibility visibility, @NotNull CollisionRule collision, int options) {
+    public void updateTeam0(@NonNull String name, @NonNull String prefix, @NonNull String suffix,
+                            @NonNull NameVisibility visibility, @NonNull CollisionRule collision,
+                            int options, @NonNull EnumChatFormat color) {
         PlayerTeam team = new PlayerTeam(dummyScoreboard, name);
         team.setAllowFriendlyFire((options & 0x01) != 0);
         team.setSeeFriendlyInvisibles((options & 0x02) != 0);
-        team.setColor(ChatFormatting.valueOf(EnumChatFormat.lastColorsOf(prefix).name()));
+        team.setColor(ChatFormatting.valueOf(color.name()));
         team.setCollisionRule(Team.CollisionRule.valueOf(collision.name()));
         team.setNameTagVisibility(Team.Visibility.valueOf(visibility.name()));
         team.setPlayerPrefix(toComponent(prefix));
         team.setPlayerSuffix(toComponent(suffix));
-        player.sendPacket(FabricTAB.getVersion().updateTeam(team));
+        player.sendPacket(FabricMultiVersion.updateTeam(team));
     }
 
     @Override
-    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)
-        ));
+    public void setScore0(@NonNull String objective, @NonNull String scoreHolder, int score,
+                          @Nullable Component displayName, @Nullable Component numberFormat) {
+        player.sendPacket(FabricMultiVersion.setScore(objective, scoreHolder, score, displayName, numberFormat));
     }
 
     @Override
-    public void removeScore0(@NotNull String objective, @NotNull String scoreHolder) {
-        player.sendPacket(FabricTAB.getVersion().removeScore(objective, scoreHolder));
+    public void removeScore0(@NonNull String objective, @NonNull String scoreHolder) {
+        player.sendPacket(FabricMultiVersion.removeScore(objective, scoreHolder));
     }
 
-    @NotNull
-    private Component toComponent(@NotNull String string) {
-        return toComponent(IChatBaseComponent.optimizedComponent(string));
+    @Override
+    public void onPacketSend(@NonNull Object packet) {
+        if (packet instanceof ClientboundSetDisplayObjectivePacket display) {
+            TAB.getInstance().getFeatureManager().onDisplayObjective(player, FabricMultiVersion.getDisplaySlot(display), display.objectiveName);
+        }
+        if (packet instanceof ClientboundSetObjectivePacket objective) {
+            TAB.getInstance().getFeatureManager().onObjective(player, objective.method, objective.objectiveName);
+        }
+        if (isAntiOverrideTeams()) {
+            FabricMultiVersion.checkTeamPacket((Packet<?>) packet, this);
+        }
     }
 
-    @NotNull
-    private Component toComponent(@NotNull IChatBaseComponent component) {
-        return player.getPlatform().toComponent(component, player.getVersion());
+    @NonNull
+    private Component toComponent(@NonNull String string) {
+        return TabComponent.optimized(string).convert(player.getVersion());
     }
 }

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

@@ -1,40 +1,41 @@
 package me.neznamy.tab.platforms.fabric;
 
-import lombok.Getter;
+import lombok.SneakyThrows;
 import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.util.ReflectionUtils;
 import net.fabricmc.api.DedicatedServerModInitializer;
 import net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents;
+import net.minecraft.SharedConstants;
 
+/**
+ * Main class for Fabric.
+ */
 public class FabricTAB implements DedicatedServerModInitializer {
 
-    @Getter
-    private static VersionLoader version;
+    /** Minecraft version string */
+    public static final String minecraftVersion = getServerVersion();
 
     @Override
     public void onInitializeServer() {
-        String[] modules = {
-                "v1_14_4",
-                "v1_15_2",
-                "v1_16_5",
-                "v1_17",
-                "v1_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_3"
-        };
-        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) {}
+        if (ReflectionUtils.classExists("net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback")) {
+            net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback.EVENT.register((dispatcher, $, $$) -> new FabricTabCommand().onRegisterCommands(dispatcher));
+        } else {
+            net.fabricmc.fabric.api.command.v1.CommandRegistrationCallback.EVENT.register((dispatcher, $) -> new FabricTabCommand().onRegisterCommands(dispatcher));
+        }
+        ServerLifecycleEvents.SERVER_STARTING.register(server -> TAB.create(new FabricPlatform(server)));
+        ServerLifecycleEvents.SERVER_STOPPING.register($ -> TAB.getInstance().unload());
+    }
+
+    @SneakyThrows
+    private static String getServerVersion() {
+        try {
+            // 1.19.4+
+            return SharedConstants.getCurrentVersion().getName();
+        } catch (Throwable e) {
+            // 1.19.3-
+            @SuppressWarnings("JavaReflectionMemberAccess") // Fabric-mapped method name
+            Object gameVersion = SharedConstants.class.getMethod("method_16673").invoke(null);
+            return (String) gameVersion.getClass().getMethod("getName").invoke(gameVersion);
         }
-        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

@@ -9,7 +9,7 @@ import com.mojang.brigadier.tree.ArgumentCommandNode;
 import com.mojang.brigadier.tree.LiteralCommandNode;
 import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.TabConstants;
-import me.neznamy.tab.shared.chat.IChatBaseComponent;
+import me.neznamy.tab.shared.chat.TabComponent;
 import me.neznamy.tab.shared.platform.TabPlayer;
 import net.minecraft.commands.CommandSourceStack;
 import net.minecraft.commands.Commands;
@@ -18,8 +18,17 @@ import org.jetbrains.annotations.NotNull;
 import java.util.Arrays;
 import java.util.concurrent.CompletableFuture;
 
+/**
+ * Command handler for plugin's command for Fabric.
+ */
 public class FabricTabCommand {
 
+    /**
+     * Handles command register request from server and registers own command.
+     *
+     * @param   dispatcher
+     *          Dispatcher to register command to
+     */
     public void onRegisterCommands(@NotNull CommandDispatcher<CommandSourceStack> dispatcher) {
         LiteralCommandNode<CommandSourceStack> command = Commands.literal(TabConstants.COMMAND_BACKEND)
                 .executes(context -> executeCommand(context.getSource(), new String[0]))
@@ -46,13 +55,14 @@ public class FabricTabCommand {
         return args;
     }
 
+    @SuppressWarnings("SameReturnValue") // Unused by plugin
     private int executeCommand(@NotNull CommandSourceStack source, @NotNull String[] args) {
+        FabricPlatform platform = (FabricPlatform) TAB.getInstance().getPlatform();
         if (TAB.getInstance().isPluginDisabled()) {
-            boolean hasReloadPermission = ((FabricPlatform)TAB.getInstance().getPlatform()).hasPermission(source, TabConstants.Permission.COMMAND_RELOAD);
-            boolean hasAdminPermission = ((FabricPlatform)TAB.getInstance().getPlatform()).hasPermission(source, TabConstants.Permission.COMMAND_ALL);
+            boolean hasReloadPermission = platform.hasPermission(source, TabConstants.Permission.COMMAND_RELOAD);
+            boolean hasAdminPermission = platform.hasPermission(source, TabConstants.Permission.COMMAND_ALL);
             for (String message : TAB.getInstance().getDisabledCommand().execute(args, hasReloadPermission, hasAdminPermission)) {
-                FabricTAB.getVersion().sendMessage(source, ((FabricPlatform)TAB.getInstance().getPlatform()).toComponent(
-                        IChatBaseComponent.optimizedComponent(message), TAB.getInstance().getServerVersion()));
+                FabricMultiVersion.sendMessage(source, TabComponent.optimized(message).convert(platform.getServerVersion()));
             }
         } else {
             if (source.getEntity() == null) {

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

@@ -2,110 +2,107 @@ package me.neznamy.tab.platforms.fabric;
 
 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 lombok.*;
+import me.neznamy.tab.shared.ProtocolVersion;
 import me.neznamy.tab.shared.platform.TabList;
 import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.Packet;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.UUID;
 
-@RequiredArgsConstructor
-public class FabricTabList implements TabList {
+/**
+ * TabList implementation for Fabric using packets.
+ */
+public class FabricTabList extends TabList<FabricTabPlayer, Component> {
 
-    @NotNull
-    private final FabricTabPlayer player;
-
-    @Override
-    public void removeEntry(@NotNull UUID entry) {
-        player.sendPacket(FabricTAB.getVersion().build(Action.UPDATE_DISPLAY_NAME, new Builder(entry)));
+    /**
+     * Constructs new instance.
+     *
+     * @param   player
+     *          Player this tablist will belong to
+     */
+    public FabricTabList(@NotNull FabricTabPlayer player) {
+        super(player);
     }
 
     @Override
-    public void updateDisplayName(@NotNull UUID entry, @Nullable IChatBaseComponent displayName) {
-        player.sendPacket(FabricTAB.getVersion().build(Action.UPDATE_DISPLAY_NAME,
-                new Builder(entry).setDisplayName(displayName == null ? null : player.getPlatform().toComponent(displayName, player.getVersion()))
-        ));
+    public void removeEntry(@NonNull UUID entry) {
+        player.sendPacket(FabricMultiVersion.buildTabListPacket(Action.REMOVE_PLAYER,
+                new Builder(entry, "", null, false, 0, 0, null)));
     }
 
     @Override
-    public void updateLatency(@NotNull UUID entry, int latency) {
-        player.sendPacket(FabricTAB.getVersion().build(Action.UPDATE_LATENCY,
-                new Builder(entry).setLatency(latency)));
+    public void updateDisplayName0(@NonNull UUID entry, @Nullable Component displayName) {
+        player.sendPacket(FabricMultiVersion.buildTabListPacket(Action.UPDATE_DISPLAY_NAME,
+                new Builder(entry, "", null, false, 0, 0, displayName)));
     }
 
     @Override
-    public void updateGameMode(@NotNull UUID entry, int gameMode) {
-        player.sendPacket(FabricTAB.getVersion().build(Action.UPDATE_GAME_MODE,
-                new Builder(entry).setGameMode(gameMode)));
+    public void updateLatency(@NonNull UUID entry, int latency) {
+        player.sendPacket(FabricMultiVersion.buildTabListPacket(Action.UPDATE_LATENCY,
+                new Builder(entry, "", null, false, latency, 0, null)));
     }
 
     @Override
-    public void addEntry(@NotNull Entry entry) {
-        player.sendPacket(FabricTAB.getVersion().build(Action.ADD_PLAYER,
-                new Builder(entry.getUniqueId())
-                .setName(entry.getName())
-                .setSkin(entry.getSkin())
-                .setGameMode(entry.getGameMode())
-                .setLatency(entry.getLatency())
-                .setDisplayName(entry.getDisplayName() == null ? null : player.getPlatform().toComponent(entry.getDisplayName(), player.getVersion()))
-        ));
+    public void updateGameMode(@NonNull UUID entry, int gameMode) {
+        player.sendPacket(FabricMultiVersion.buildTabListPacket(Action.UPDATE_GAME_MODE,
+                new Builder(entry, "", null, false, 0, gameMode, null)));
     }
 
     @Override
-    @SneakyThrows
-    public void setPlayerListHeaderFooter(@NotNull IChatBaseComponent header, @NotNull IChatBaseComponent footer) {
-        player.sendPacket(FabricTAB.getVersion().newHeaderFooter(
-                player.getPlatform().toComponent(header, player.getVersion()),
-                player.getPlatform().toComponent(footer, player.getVersion())
-        ));
+    public void updateListed(@NonNull UUID entry, boolean listed) {
+        if (player.getPlatform().getServerVersion().getNetworkId() >= ProtocolVersion.V1_19_3.getNetworkId()) {
+            player.sendPacket(FabricMultiVersion.buildTabListPacket(Action.UPDATE_LISTED,
+                    new Builder(entry, "", null, listed, 0, 0, null)));
+        }
     }
 
-    @RequiredArgsConstructor
+    @Override
+    public void addEntry0(@NonNull UUID id, @NonNull String name, @Nullable Skin skin, boolean listed, int latency, int gameMode, @Nullable Component displayName) {
+        player.sendPacket(FabricMultiVersion.buildTabListPacket(Action.ADD_PLAYER,
+                new Builder(id, name, skin, listed, latency, gameMode, displayName)));
+    }
+
+    @Override
+    public void setPlayerListHeaderFooter0(@NonNull Component header, @NonNull Component footer) {
+        player.sendPacket(FabricMultiVersion.newHeaderFooter(header, footer));
+    }
+
+    @Override
+    public boolean containsEntry(@NonNull UUID entry) {
+        return true; // TODO?
+    }
+
+    @Override
+    public void onPacketSend(@NonNull Object packet) {
+        if (FabricMultiVersion.isPlayerInfo((Packet<?>) packet)) {
+            FabricMultiVersion.onPlayerInfo(player, packet);
+        }
+    }
+
+    /**
+     * TabList entry builder.
+     */
+    @AllArgsConstructor
     @Getter
     public static class Builder {
 
-        @NotNull private final UUID id;
-        @NotNull private String name = ""; // Avoid nullability issues as things are changing over versions
+        @NonNull private final UUID id;
+        @NonNull private String name;
         @Nullable private Skin skin;
+        private boolean listed;
         private int latency;
         private int gameMode;
         @Nullable private Component displayName;
 
-        @NotNull
-        public Builder setName(@NotNull String name) {
-            this.name = name;
-            return this;
-        }
-
-        @NotNull
-        public Builder setSkin(@Nullable Skin skin) {
-            this.skin = skin;
-            return this;
-        }
-
-        @NotNull
-        public Builder setLatency(int latency) {
-            this.latency = latency;
-            return this;
-        }
-
-        @NotNull
-        public Builder setGameMode(int gameMode) {
-            this.gameMode = gameMode;
-            return this;
-        }
-
-        @NotNull
-        public Builder setDisplayName(@Nullable Component displayName) {
-            this.displayName = displayName;
-            return this;
-        }
-
-        @NotNull
+        /**
+         * Creates profile of this entry.
+         *
+         * @return  Profile of this entry
+         */
+        @NonNull
         public GameProfile createProfile() {
             GameProfile profile = new GameProfile(id, name);
             if (skin != null) {

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

@@ -4,8 +4,7 @@ import com.mojang.authlib.properties.Property;
 import lombok.Getter;
 import me.neznamy.tab.shared.backend.BackendTabPlayer;
 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.chat.TabComponent;
 import me.neznamy.tab.shared.platform.TabList;
 import me.neznamy.tab.shared.platform.BossBar;
 import net.minecraft.network.protocol.Packet;
@@ -15,14 +14,17 @@ import org.jetbrains.annotations.Nullable;
 
 import java.util.Collection;
 
+/**
+ * TabPlayer implementation for Fabric.
+ */
 @Getter
 public class FabricTabPlayer extends BackendTabPlayer {
 
     @NotNull
-    private final Scoreboard<FabricTabPlayer> scoreboard = new FabricScoreboard(this);
+    private final FabricScoreboard scoreboard = new FabricScoreboard(this);
 
     @NotNull
-    private final TabList tabList = new FabricTabList(this);
+    private final FabricTabList tabList = new FabricTabList(this);
 
     @NotNull
     private final BossBar bossBar = new FabricBossBar(this);
@@ -30,9 +32,17 @@ public class FabricTabPlayer extends BackendTabPlayer {
     @NotNull
     private final EntityView entityView = new FabricEntityView(this);
 
+    /**
+     * Constructs new instance with given parameters.
+     *
+     * @param   platform
+     *          Server platform
+     * @param   player
+     *          Platform's player object
+     */
     public FabricTabPlayer(@NotNull FabricPlatform platform, @NotNull ServerPlayer player) {
         super(platform, player, player.getUUID(), player.getGameProfile().getName(),
-                FabricTAB.getVersion().getName(FabricTAB.getVersion().getLevel(player)));
+                FabricMultiVersion.getLevelName(FabricMultiVersion.getLevel(player)), platform.getServerVersion().getNetworkId());
     }
 
     @Override
@@ -42,12 +52,12 @@ public class FabricTabPlayer extends BackendTabPlayer {
 
     @Override
     public int getPing() {
-        return FabricTAB.getVersion().getPing(getPlayer());
+        return FabricMultiVersion.getPing(getPlayer());
     }
 
     @Override
-    public void sendMessage(@NotNull IChatBaseComponent message) {
-        FabricTAB.getVersion().sendMessage(getPlayer(), getPlatform().toComponent(message, getVersion()));
+    public void sendMessage(@NotNull TabComponent message) {
+        FabricMultiVersion.sendMessage(getPlayer(), message.convert(getVersion()));
     }
 
     @Override
@@ -65,7 +75,7 @@ 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
-        return FabricTAB.getVersion().propertyToSkin(properties.iterator().next());
+        return FabricMultiVersion.propertyToSkin(properties.iterator().next());
     }
 
     @Override
@@ -74,11 +84,6 @@ public class FabricTabPlayer extends BackendTabPlayer {
         return (ServerPlayer) player;
     }
 
-    @Override
-    public boolean isOnline() {
-        return true;
-    }
-
     @Override
     public FabricPlatform getPlatform() {
         return (FabricPlatform) platform;
@@ -102,7 +107,7 @@ public class FabricTabPlayer extends BackendTabPlayer {
     @Override
     @NotNull
     public String getDisplayName() {
-        return getPlayer().getDisplayName().getString(); // Will make it work properly if someone asks
+        return getPlayer().getGameProfile().getName(); // Will make it work properly if someone asks
     }
 
     /**

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

@@ -1,90 +0,0 @@
-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

@@ -1,11 +1,11 @@
 package me.neznamy.tab.platforms.fabric.features;
 
-import me.neznamy.tab.platforms.fabric.FabricTAB;
+import me.neznamy.tab.platforms.fabric.FabricMultiVersion;
 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 me.neznamy.tab.shared.util.ReflectionUtils;
 import net.fabricmc.fabric.api.entity.event.v1.ServerPlayerEvents;
 import net.minecraft.world.entity.Entity;
 import net.minecraft.world.entity.EntityType;
@@ -16,12 +16,19 @@ import org.jetbrains.annotations.Nullable;
 import java.util.List;
 import java.util.stream.Collectors;
 
+/**
+ * Unlimited nametag mode implementation for Fabric.
+ */
 public class FabricNameTagX extends BackendNameTagX {
 
-    public boolean enabled = true;
+    /** Flag tracking whether this instance is still running or not */
+    private boolean enabled = true;
 
+    /**
+     * Constructs new instance and registers event listener.
+     */
     public FabricNameTagX() {
-        if (TAB.getInstance().getServerVersion().getMinorVersion() >= 16) {
+        if (ReflectionUtils.classExists("net.fabricmc.fabric.api.entity.event.v1.ServerPlayerEvents")) {
             // Added in 1.16
             ServerPlayerEvents.AFTER_RESPAWN.register((oldPlayer, newPlayer, alive) -> {
                 if (enabled) respawn(oldPlayer.getUUID());
@@ -39,8 +46,8 @@ public class FabricNameTagX extends BackendNameTagX {
 
     @Override
     public boolean areInSameWorld(@NotNull TabPlayer player1, @NotNull TabPlayer player2) {
-        return FabricTAB.getVersion().getLevel(((FabricTabPlayer)player1).getPlayer()) ==
-                FabricTAB.getVersion().getLevel(((FabricTabPlayer)player2).getPlayer());
+        return FabricMultiVersion.getLevel(((FabricTabPlayer)player1).getPlayer()) ==
+                FabricMultiVersion.getLevel(((FabricTabPlayer)player2).getPlayer());
     }
 
     @Override
@@ -78,7 +85,7 @@ public class FabricNameTagX extends BackendNameTagX {
 
     @Override
     public boolean isSneaking(@NotNull TabPlayer player) {
-        return FabricTAB.getVersion().isSneaking(((FabricTabPlayer)player).getPlayer());
+        return FabricMultiVersion.isSneaking(((FabricTabPlayer)player).getPlayer());
     }
 
     @Override
@@ -120,7 +127,7 @@ public class FabricNameTagX extends BackendNameTagX {
     @Override
     @NotNull
     public EntityData createDataWatcher(@NotNull TabPlayer viewer, byte flags, @NotNull String displayName, boolean nameVisible) {
-        return FabricTAB.getVersion().createDataWatcher(viewer, flags, displayName, nameVisible);
+        return FabricMultiVersion.createDataWatcher(viewer, flags, displayName, nameVisible);
     }
 
     @Override
@@ -132,4 +139,9 @@ public class FabricNameTagX extends BackendNameTagX {
     public boolean isDead(@NotNull TabPlayer player) {
         return !((FabricTabPlayer)player).getPlayer().isAlive();
     }
+
+    @Override
+    public boolean isFlying(@NotNull TabPlayer player) {
+        return ((FabricTabPlayer)player).getPlayer().getAbilities().flying;
+    }
 }