[HELP ME] Change unknown command message

How to change unknown command message???

 

[CHANGE TITLE]

Seriously though, you should make your title more descriptive

 

You can modify it with ProtocolLib the same way I did here. Here's an updated version for changing the unknown message (download):

Code:java

public class ExampleMod extends JavaPlugin implements Listener {
    @Override
    public void onEnable() {
        ProtocolLibrary.getProtocolManager().addPacketListener(
                new PacketAdapter(this, ConnectionSide.SERVER_SIDE, Packets.Server.CHAT) {
                    @Override
                    public void onPacketSending(PacketEvent event) {
                        String message = event.getPacket().getStrings().read(0);
 
                        // Modify this exact message regardless of the coloring
                        if ("Unknown command. Type \"help\" for help.".equals(ChatColor
                                .stripColor(message))) {
                            event.getPacket().getStrings()
                                    .write(0, "Wrong. Try again!");
                        }
                    }
                });
    }
 
    @Override
    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
        sender.sendMessage(ChatColor.RED + "You don't have permission for this area.");
        return true;
    }
}

Looks like this is a duplicate of this thread. Please don't spam the forums.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Comphenix It does not work.

Line:

Code:

new PacketAdapter(this, ConnectionSide.SERVER_SIDE, Packets.Server.CHAT){

give errors

 

It does, I just tested it.

But you do need to install ProtocolLib, reference it in your plugin, and add it to "depend" in your plugin.yml. Here's a compiled version of the example above.

 

Comphenix
Here is my error:

Code:

2013-06-08 15:52:51 [SEVERE] Could not load 'plugins\Core.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: com/comphenix/protocol/events/PacketListener
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:184)
    at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:305)
    at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:230)
    at org.bukkit.craftbukkit.v1_5_R3.CraftServer.loadPlugins(CraftServer.java:239)
    at org.bukkit.craftbukkit.v1_5_R3.CraftServer.reload(CraftServer.java:603)
    at org.bukkit.Bukkit.reload(Bukkit.java:185)
    at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:23)
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:189)
    at org.bukkit.craftbukkit.v1_5_R3.CraftServer.dispatchCommand(CraftServer.java:523)
    at net.minecraft.server.v1_5_R3.PlayerConnection.handleCommand(PlayerConnection.java:965)
    at net.minecraft.server.v1_5_R3.PlayerConnection.chat(PlayerConnection.java:883)
    at net.minecraft.server.v1_5_R3.PlayerConnection.a(PlayerConnection.java:840)
    at net.minecraft.server.v1_5_R3.Packet3Chat.handle(Packet3Chat.java:44)
    at net.minecraft.server.v1_5_R3.NetworkManager.b(NetworkManager.java:292)
    at net.minecraft.server.v1_5_R3.PlayerConnection.d(PlayerConnection.java:109)
    at net.minecraft.server.v1_5_R3.ServerConnection.b(SourceFile:35)
    at net.minecraft.server.v1_5_R3.DedicatedServerConnection.b(SourceFile:30)
    at net.minecraft.server.v1_5_R3.MinecraftServer.r(MinecraftServer.java:581)
    at net.minecraft.server.v1_5_R3.DedicatedServer.r(DedicatedServer.java:226)
    at net.minecraft.server.v1_5_R3.MinecraftServer.q(MinecraftServer.java:477)
    at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:410)
    at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.NoClassDefFoundError: com/comphenix/protocol/events/PacketListener
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:173)
    ... 21 more
Caused by: java.lang.ClassNotFoundException: com.comphenix.protocol.events.PacketListener
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:80)
    at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:53)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 24 more

My code:

Code:

@Override
public void onEnable() {
    getServer().getPluginManager().registerEvents(new CoreListener(this), this); //Colored motd
    this.logger.info("Core enabled!"); 
 
   
    //UK
    ProtocolLibrary.getProtocolManager().addPacketListener(
            new PacketAdapter(this, ConnectionSide.SERVER_SIDE, Packets.Server.CHAT){
                @Override
                public void onPacketSending(PacketEvent e){
                    String message = e.getPacket().getStrings().read(0);
                    if("Unknown command. Type \"help\" for help.".equals(ChatColor.stripColor(message))) {
                    e.getPacket().getStrings().write(0, ChatColor.GOLD + "Commando niet gevonden");
                    }
                }
            });   
}
@Override
public boolean onCommand(CommandSender sender, Command command, String label, String[] args){
    sender.sendMessage(ChatColor.GOLD + "No permissions");
    return true;
}

FIXED.

(I only imported protocolLib, i don't installed it in my server)

I suck.

Comphenix
Is it possible to do it without protocolLib???

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Jhtzb

Possible but extremely difficult. I'd recommend using ProtocolLib

 

Hoolean
Okay

Hoolean
I want it
I don't want that plugin on my server.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Then get ready to do a hell of a lot of coding.

It's really the easiest way!

Why don't you want to use it?

 

Hoolean
http://dev.bukkit.org/bukkit-mods/simpleuc/
http://dev.bukkit.org/bukkit-mods/unknowncommand/
That plugins don't require ProtocolLib

 

Jhtzb

Then why didn't you just look at the source of one of them?

On at least one of them the source is made available :/

 

Hoolean It don't work if i pick te source from it. Can you help?

 

Jhtzb

What doesn't work?

Is there an error?

 

Hoolean Yes i gonna test it again so i can give you the error.

 

How about this, Works for me, dunno if its a safe way to do it though.

Code:java

public class CommandListener implements Listener {
    @EventHandler(priority = EventPriority.NORMAL)
    public void onPlayerCommandPreprocess(PlayerCommandPreprocessEvent event) {
        if (!event.isCancelled()) {
            Player player = event.getPlayer();
            String cmd = event.getMessage().split(" ")[0];
            HelpTopic topic = Bukkit.getServer().getHelpMap().getHelpTopic(cmd);
            if (topic == null) {
                player.sendMessage(ChatColor.RED + cmd + " dont excist, type \"/help\" for help");
                event.setCancelled(true);
            }
        }
    }
}

 

Kiwz
Did you test it for the worldedit commands? WorldEdit is registering it's commands dynamically to the server command map, so that's the reason why you have to get it through reflection / obc code (CraftServer.getCommandMap()) to check if the command exists. However, I don't know if worldedit adds his commands to the help map, so it may work...

 

CraftServer.getCommandMap() is a craftbukkit method, not a Bukkit method.

As for reflecting to get the message, it's a hardcoded string, no variable set there. I'll toy with it.

Edit: From the looks of it, those plugins did this through catching every command through the ComanndPreProcess event, which, while easy, is somewhat dirty. However the alternative involves modifying bytecode, so it might be the path you should take.

 

I know it's a craftbukkit method, that's why I wrote it may be better to get the command map through reflection, so you don't need to update your plugin with every minecraft update.

 

Locked, being a massive thread necropost.