Tab list sorting by rank weight

Plugins/Mineplex.Core/src/mineplex/core/scoreboard/TabListSorter.java

@@ -0,0 +1,99 @@
+package mineplex.core.scoreboard;
+
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.Map;
+
+import net.minecraft.server.v1_8_R3.PacketPlayOutPlayerInfo;
+
+import org.bukkit.entity.Player;
+
+import mineplex.core.MiniPlugin;
+import mineplex.core.account.permissions.Permission;
+import mineplex.core.account.permissions.PermissionGroup;
+import mineplex.core.command.CommandBase;
+import mineplex.core.packethandler.IPacketHandler;
+import mineplex.core.packethandler.PacketHandler;
+import mineplex.core.packethandler.PacketInfo;
+
+/**
+ * Sorts the tab list by rank weight (or some other arbitrary metric if you want)
+ * @author Dan
+ */
+public class TabListSorter extends MiniPlugin implements IPacketHandler
+{
+	public enum Perm implements Permission
+	{
+		RANDOM_TAB_LIST
+	}
+
+	private static final Map<PermissionGroup, Integer> WEIGHT;
+
+	static
+	{
+		WEIGHT = new HashMap<>();
+		for (PermissionGroup group : PermissionGroup.values())
+		{
+			if (group.canBePrimary())
+			{
+				WEIGHT.put(group, group.ordinal());
+			}
+		}
+	}
+
+	private PacketHandler _packetHandler;
+	private boolean _randomized = false;
+
+	public TabListSorter()
+	{
+		super("TabListSorter");
+
+		generatePermissions();
+
+		// /randomtab - straightforward toggle
+		addCommand(new CommandBase<TabListSorter>(this, Perm.RANDOM_TAB_LIST, "randomtab")
+		{
+			@Override
+			public void Execute(Player caller, String[] args)
+			{
+				_randomized = !_randomized;
+			}
+		});
+	}
+
+	private void generatePermissions()
+	{
+		PermissionGroup.DEV.setPermission(Perm.RANDOM_TAB_LIST, true, true);
+	}
+
+	@Override
+	public void enable()
+	{
+		_packetHandler = require(PacketHandler.class);
+		_packetHandler.addPacketHandler(this, PacketPlayOutPlayerInfo.class);
+	}
+
+	@Override
+	public void disable()
+	{
+		_packetHandler.removePacketHandler(this);
+	}
+
+	@Override
+	public void handle(PacketInfo packetInfo)
+	{
+		if (packetInfo.getPacket() instanceof PacketPlayOutPlayerInfo)
+		{
+			PacketPlayOutPlayerInfo packet = (PacketPlayOutPlayerInfo) packetInfo.getPacket();
+
+			if (_randomized)
+			{
+				Collections.shuffle(packet.b);
+			} else
+			{
+				packet.b.sort(Comparator.comparingInt(info -> WEIGHT.getOrDefault(info, 0)));
+			}
+		}
+	}
+}

Plugins/Mineplex.Hub/src/mineplex/hub/HubManager.java

@@ -110,6 +110,7 @@ import mineplex.core.punish.Punish;
 import mineplex.core.quests.QuestManager;
 import mineplex.core.scoreboard.MineplexScoreboard;
 import mineplex.core.scoreboard.ScoreboardManager;
+import mineplex.core.scoreboard.TabListSorter;
 import mineplex.core.stats.StatsManager;
 import mineplex.core.status.ServerStatusManager;
 import mineplex.core.task.TaskManager;
@@ -311,6 +312,8 @@ public class HubManager extends MiniClientPlugin<HubClient> implements IChatMess
 
 		new TemporaryGemHuntersServerSender(_portal);
 
+		require(TabListSorter.class);
+
 		ScoreboardManager scoreboardManager = new ScoreboardManager(plugin)
 		{
 			@Override