How do I implement a command handler?

[JustMeD3v]

I searched for the past few hours on if there are any events for commands.

I would like to just have a simple command that when executed, writes something in chat.

How can I do this?

Is there any built-in event for something like that?

I've seen a few tutorials but they are all from 2012 and dont work anymore.
 

Thanks in advance!

Edit: Sorry if I am being dumb. I just started with minecraft forge. I have a pretty good knowledge of java tho.

Edited March 10, 2021 by JustMeD3v

[JustMeD3v]

Oh. Thanks!

One question: Is there any way I can start the development client using gradlew runClient with no minecraft debugging? Because Its kinda hard to see System.out.println like this...

[JustMeD3v]

Sorry..
But I dont totally get how you mean that.
Is this a @SubscribeEvent?

Can you maybe send a small code snippet?

[JustMeD3v]

The things like 'joined world xyz' and 'Entry x'

 

[JustMeD3v]

Nevermind that haha. I am sorry for being dumb there.

 

But my event isnt registering?

 

@SubscribeEvent
    public void registerCommandsEvent(RegisterCommandsEvent event) {
        LOGGER.info(event);
        LOGGER.info("Test");
        //playerIn.addChatMessage(TextComponent("test"));
    }

 

[JustMeD3v]

1 minute ago, diesieben07 said:

Define "isn't registering".

Show how you registered your event handler.

It just doesn't fire when I send a command.

This is my registering:
 

MinecraftForge.EVENT_BUS.register(this);

 

[JustMeD3v]

2 minutes ago, diesieben07 said:

Show more of your code. That should work fine.

package com.example.examplemod;

import net.minecraft.block.Blocks;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.event.RegisterCommandsEvent;
import net.minecraftforge.eventbus.api.SubscribeEvent;
import net.minecraftforge.fml.InterModComms;
import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.fml.event.lifecycle.FMLClientSetupEvent;
import net.minecraftforge.fml.event.lifecycle.FMLCommonSetupEvent;
import net.minecraftforge.fml.event.lifecycle.InterModEnqueueEvent;
import net.minecraftforge.fml.event.lifecycle.InterModProcessEvent;
import net.minecraftforge.fml.event.server.FMLServerStartingEvent;
import net.minecraftforge.fml.javafmlmod.FMLJavaModLoadingContext;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import java.util.stream.Collectors;

// The value here should match an entry in the META-INF/mods.toml file
@Mod("examplemod")
public class ExampleMod
{
    // Directly reference a log4j logger.
    private static final Logger LOGGER = LogManager.getLogger();

    public ExampleMod() {
        // Register the setup method for modloading
        FMLJavaModLoadingContext.get().getModEventBus().addListener(this::setup);
        // Register the enqueueIMC method for modloading
        FMLJavaModLoadingContext.get().getModEventBus().addListener(this::enqueueIMC);
        // Register the processIMC method for modloading
        FMLJavaModLoadingContext.get().getModEventBus().addListener(this::processIMC);
        // Register the doClientStuff method for modloading
        FMLJavaModLoadingContext.get().getModEventBus().addListener(this::doClientStuff);

        // Register ourselves for server and other game events we are interested in
        MinecraftForge.EVENT_BUS.register(this);
        MinecraftForge.EVENT_BUS.register();
    }

    private void setup(final FMLCommonSetupEvent event)
    {
        // some preinit code
        LOGGER.info("HELLO FROM PREINIT");
        LOGGER.info("DIRT BLOCK >> {}", Blocks.DIRT.getRegistryName());
    }

    private void doClientStuff(final FMLClientSetupEvent event) {
        // do something that can only be done on the client
        LOGGER.info("Got game settings {}", event.getMinecraftSupplier().get().gameSettings);
    }

    private void enqueueIMC(final InterModEnqueueEvent event)
    {
        // some example code to dispatch IMC to another mod
        InterModComms.sendTo("examplemod", "helloworld", () -> { LOGGER.info("Hello world from the MDK"); return "Hello world";});
    }

    private void processIMC(final InterModProcessEvent event)
    {
        // some example code to receive and process InterModComms from other mods
        LOGGER.info("Got IMC {}", event.getIMCStream().
                map(m->m.getMessageSupplier().get()).
                collect(Collectors.toList()));
    }
    // You can use SubscribeEvent and let the Event Bus discover methods to call
    @SubscribeEvent
    public void onServerStarting(FMLServerStartingEvent event) {
        // do something when the server starts
        LOGGER.info("HELLO from server starting");
    }

    @SubscribeEvent
    public void registerCommandsEvent(RegisterCommandsEvent event) {
        LOGGER.info(event);
        LOGGER.info("Test");
        //playerIn.addChatMessage(TextComponent("test"));
    }
}

 

[JustMeD3v]

Oh yes that was just a test from me. I removed it in the build

Its still not working.

When should It fire?

On every message that starts with a slash right?

 

[JustMeD3v]

5 minutes ago, diesieben07 said:

No. It fires at startup so you can register your commands.

Ok nice but how do I actually make a command then

[JustMeD3v]

Where can I find those?