Command stuffs

src/main/java/com/volmit/iris/util/ICommand.java

@@ -50,4 +50,6 @@ public interface ICommand
 	 * @return return true to mark it as handled
 	 */
 	public boolean handle(MortarSender sender, String[] args);
+
+	public KList<String> handleTab(MortarSender sender, String[] args);
 }

src/main/java/com/volmit/iris/util/MortarCommand.java

@@ -1,5 +1,9 @@
 package com.volmit.iris.util;
 
+import com.volmit.iris.Iris;
+import com.volmit.iris.IrisSettings;
+import org.bukkit.Sound;
+
 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 
@@ -37,6 +41,35 @@ public abstract class MortarCommand implements ICommand
 		description = "No Description";
 	}
 
+	@Override
+	public KList<String> handleTab(MortarSender sender, String[] args)
+	{
+		KList<String> v = new KList<>();
+		if(args.length == 0)
+		{
+			for(MortarCommand i : getChildren())
+			{
+				v.add(i.getNode());
+			}
+		}
+
+		addTabOptions(sender, args, v);
+
+		if(v.isEmpty())
+		{
+			return null;
+		}
+
+		if(sender.isPlayer() && IrisSettings.get().commandSounds)
+		{
+			sender.player().getWorld().playSound(sender.player().getLocation(), Sound.ENTITY_ITEM_FRAME_ROTATE_ITEM, 0.25f, 1.7f);
+		}
+
+		return v;
+	}
+
+	public abstract void addTabOptions(MortarSender sender, String[] args, KList<String> list);
+
 	public void printHelp(MortarSender sender)
 	{
 		boolean b = false;
@@ -60,6 +93,12 @@ public abstract class MortarCommand implements ICommand
 		{
 			sender.sendMessage("There are either no sub-commands or you do not have permission to use them.");
 		}
+
+		if(sender.isPlayer() && IrisSettings.get().commandSounds)
+		{
+			sender.player().getWorld().playSound(sender.player().getLocation(), Sound.ITEM_BOOK_PAGE_TURN, 0.28f, 1.4f);
+			sender.player().getWorld().playSound(sender.player().getLocation(), Sound.ITEM_AXE_STRIP, 0.35f, 1.7f);
+		}
 	}
 
 	protected abstract String getArgsUsage();

src/main/java/com/volmit/iris/util/VirtualCommand.java

@@ -2,7 +2,9 @@ package com.volmit.iris.util;
 
 import java.lang.reflect.Field;
 
+import com.volmit.iris.IrisSettings;
 import org.bukkit.Bukkit;
+import org.bukkit.Sound;
 import org.bukkit.command.CommandSender;
 
 import com.volmit.iris.Iris;
@@ -78,7 +80,9 @@ public class VirtualCommand
 		vs.setTag(tag);
 
 		if(label != null)
+		{
 			vs.setCommand(label);
+		}
 
 		if(chain.isEmpty())
 		{
@@ -104,6 +108,11 @@ public class VirtualCommand
 					c.remove(0);
 					if(cmd.hit(sender, c, vs.getCommand()))
 					{
+						if(vs.isPlayer() && IrisSettings.get().commandSounds)
+						{
+							vs.player().getWorld().playSound(vs.player().getLocation(), Sound.ITEM_AXE_STRIP, 0.35f, 1.8f);
+						}
+
 						return true;
 					}
 				}
@@ -118,6 +127,53 @@ public class VirtualCommand
 		return command.handle(vs, chain.toArray(new String[chain.size()]));
 	}
 
+	public KList<String> hitTab(CommandSender sender, KList<String> chain, String label)
+	{
+		MortarSender vs = new MortarSender(sender);
+		vs.setTag(tag);
+
+		if(label != null)
+			vs.setCommand(label);
+
+		if(chain.isEmpty())
+		{
+			if(!checkPermissions(sender, command))
+			{
+				return null;
+			}
+
+			return command.handleTab(vs, new String[0]);
+		}
+
+		String nl = chain.get(0);
+
+		for(KList<String> i : children.k())
+		{
+			for(String j : i)
+			{
+				if(j.equalsIgnoreCase(nl))
+				{
+					vs.setCommand(chain.get(0));
+					VirtualCommand cmd = children.get(i);
+					KList<String> c = chain.copy();
+					c.remove(0);
+					KList<String> v = cmd.hitTab(sender, c, vs.getCommand());
+					if(v != null)
+					{
+						return v;
+					}
+				}
+			}
+		}
+
+		if(!checkPermissions(sender, command))
+		{
+			return null;
+		}
+
+		return command.handleTab(vs, chain.toArray(new String[chain.size()]));
+	}
+
 	private boolean checkPermissions(CommandSender sender, ICommand command2)
 	{
 		boolean failed = false;

src/main/java/com/volmit/iris/util/VolmitPlugin.java

@@ -6,9 +6,11 @@ import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Modifier;
 import java.util.Iterator;
+import java.util.List;
 import java.util.Map;
 
 import org.bukkit.Bukkit;
+import org.bukkit.Sound;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandMap;
 import org.bukkit.command.CommandSender;
@@ -16,14 +18,17 @@ import org.bukkit.command.PluginCommand;
 import org.bukkit.command.SimpleCommandMap;
 import org.bukkit.configuration.file.FileConfiguration;
 import org.bukkit.configuration.file.YamlConfiguration;
+import org.bukkit.entity.Player;
 import org.bukkit.event.HandlerList;
 import org.bukkit.event.Listener;
 import org.bukkit.permissions.PermissionDefault;
 import org.bukkit.plugin.java.JavaPlugin;
 
 import com.volmit.iris.Iris;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
-public abstract class MortarPlugin extends JavaPlugin implements Listener
+public abstract class VolmitPlugin extends JavaPlugin implements Listener
 {
 	public static boolean bad = false;
 	private KMap<KList<String>, VirtualCommand> commands;
@@ -471,6 +476,42 @@ public abstract class MortarPlugin extends JavaPlugin implements Listener
 		}
 	}
 
+	@Nullable
+	@Override
+	public List<String> onTabComplete(@NotNull CommandSender sender, @NotNull Command command,
+							    @NotNull String alias, @NotNull String[] args) {
+		KList<String> chain = new KList<String>();
+
+		for(String i : args)
+		{
+			if(i.trim().isEmpty())
+			{
+				continue;
+			}
+
+			chain.add(i.trim());
+		}
+
+		for(KList<String> i : commands.k())
+		{
+			for(String j : i)
+			{
+				if(j.equalsIgnoreCase(alias))
+				{
+					VirtualCommand cmd = commands.get(i);
+
+					List<String> v = cmd.hitTab(sender, chain.copy(), alias);
+					if(v != null)
+					{
+						return v;
+					}
+				}
+			}
+		}
+
+		return super.onTabComplete(sender, command, alias, args);
+	}
+
 	@Override
 	public boolean onCommand(CommandSender sender, org.bukkit.command.Command command, String label, String[] args)
 	{