I've had a request for a mod in which a user can execute a command "/wparty add user" and it will add that user to a text file (created in the same directory as the mod, in the mods folder), every time the command is executed the name needs to be written a line down. There also needs to be a "/wparty clear" and "/wparty remove user". Then, when the user executed "/wparty party", it takes those names and executes a command in bulk with a small delay between them "/party user". Note the /party is a command on the server I am using it on, and so all I need to do is send a message through the player (easy).

 

This is the beginnings of my attempt:

 

WhitelistAdd Command:

package com.simpleafk;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.Charset;
import java.nio.file.CopyOption;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.List;

import net.minecraft.command.CommandBase;
import net.minecraft.command.CommandException;
import net.minecraft.command.ICommandSender;
import net.minecraft.util.ChatComponentText;

public class WhitelistAdd extends CommandBase {
private static final String FILE_PATH = "";


@Override
public String getCommandName() {
	// TODO Auto-generated method stub
	return "wparty";
}

@Override
public String getCommandUsage(ICommandSender sender) {
	// TODO Auto-generated method stub
	return "wparty <username>";
}
@Override
public boolean canCommandSenderUseCommand(ICommandSender icommandsender) {

	return true;
}
@Override
public void processCommand(ICommandSender sender, String[] args) throws CommandException {
	// TODO Auto-generated method stub
	if (args.length == 0){
		sender.addChatMessage(new ChatComponentText("You must specify a valid username!"));
	}
	else {

		String user = args[1];
		if (args[0] == "add") {

			if (user.length() == 0){

			}
			else {
				try {
			FileWriter fw = new FileWriter("wpartylist.txt");
			 fw.write(user);


			fw.close();
		}
				catch (IOException x){

				}
		}
		}



		else if (args[0] == "clear"){

		}
		else if (args[0] == "remove"){

		}
}
}
}

 

This is a CLIENT side mod.

 

 

Any help would be appreciated, thanks in advance!

Load to a ArrayList from the File and write to that file, look up how to write to a txt file in Java.

Load to a ArrayList from the File and write to that file, look up how to write to a txt file in Java.

I've tried quite a few things but none of it seems to work. I don't know where to specify the path for the file, I want to create it in the same directory as the mods. Could you give me a quick tutorial?

Poof a tutorial thanks google.

https://www.caveofprogramming.com/java/java-file-reading-and-writing-files-in-java.html

Look at the tutorial, until you understand it. Then edit it to your desires.

Poof a tutorial thanks google.

https://www.caveofprogramming.com/java/java-file-reading-and-writing-files-in-java.html

Look at the tutorial, until you understand it. Then edit it to your desires.

How do I create the file in the same directory? It just creates a file somewhere and I have no idea where it is.

You need to set the path. This path is probably in your c drive "wpartylist.txt".

You need to set the path. This path is probably in your c drive "wpartylist.txt".

How? And there is nothing in my C drive...

That was just a guess, but what you will want to do is make a String set it equal to preevent.getSourceFile().getAbsolutePath()

And use something like this to get rid of the file name on the end then add your own file name to the end.

File file = File("C:\\abcfolder\\textfile.txt");
String absolutePath = file.getAbsolutePath();
String filePath = absolutePath.
    substring(0,absolutePath.lastIndexOf(File.separator));

That was just a guess, but what you will want to do is make a String set it equal to preevent.getSourceFile().getAbsolutePath()

And use something like this to get rid of the file name on the end then add your own file name to the end.

File file = File("C:\\abcfolder\\textfile.txt");
String absolutePath = file.getAbsolutePath();
String filePath = absolutePath.
    substring(0,absolutePath.lastIndexOf(File.separator));

File(String) method is undefined for my WhitelistAdd command. How do I implement this?

That is not what I meant make a static variable in your main mod class, then initialize it like I told you to.

That is not what I meant make a static variable in your main mod class, then initialize it like I told you to.

"preevent cannot be resolved"

That is not what I meant make a static variable in your main mod class, then initialize it like I told you to.

"preevent cannot be resolved"

 

This error without any code is meaningless.

Actually I understand

// Use this method
preInit(FMLPreInitializationEvent event)
//                                               ^ preevent

That is not what I meant make a static variable in your main mod class, then initialize it like I told you to.

"preevent cannot be resolved"

 

This error without any code is meaningless.

 

package com.simpleafk;

import net.minecraftforge.client.ClientCommandHandler;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.fml.common.Mod.EventHandler;
import net.minecraftforge.fml.common.Mod.Instance;
import net.minecraftforge.fml.common.event.FMLInitializationEvent;
import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;

@Mod(modid="simpleafk", name= "Simple AFK", version="1.0", clientSideOnly = true)

public class AFKMain
{
public static String absolutePath = preevent.getSourceFile().getAbsolutePath();

//Creating instances.
    @Instance("simpleafk")
    public static AFKMain instance;
    

    @EventHandler
    public void preInit(FMLPreInitializationEvent event)
    {

    	MinecraftForge.EVENT_BUS.register(new ChatListener());
    	
    }

    @EventHandler
    public void init(FMLInitializationEvent event)
    {
    	ClientCommandHandler.instance.registerCommand(new SampleCommand());
    	ClientCommandHandler.instance.registerCommand(new WhitelistAdd());
    	
     }
}

Oh jesus christ.  You can't just do this:

public static String absolutePath = preevent.getSourceFile().getAbsolutePath();

 

Also, "preevent" doesn't even exist in your event methods.

 

public static String absolutePath;

public void preInit(FMLPreInitializationEvent event) {
    absolutePath = event.getSourceFile().getAbsolutePath();
}

 

Go learn Java.

Actually I understand

// Use this method
preInit(FMLPreInitializationEvent event)
//                                               ^ preevent

That is still completely unhelpful.

Oh jesus christ.  You can't just do this:

public static String absolutePath = preevent.getSourceFile().getAbsolutePath();

 

Also, "preevent" doesn't even exist in your event methods.

 

public static String absolutePath;

public void preInit(FMLPreInitializationEvent event) {
    absolutePath = event.getSourceFile().getAbsolutePath();
}

 

Go learn Java.

Sorry I must have misread the title of this forum thread, I was fairly sure it said "Modder Support".

Oh jesus christ.  You can't just do this:

public static String absolutePath = preevent.getSourceFile().getAbsolutePath();

 

Also, "preevent" doesn't even exist in your event methods.

 

public static String absolutePath;

public void preInit(FMLPreInitializationEvent event) {
    absolutePath = event.getSourceFile().getAbsolutePath();
}

 

Go learn Java.

Sorry I must have misread the title of this forum thread, I was fairly sure it said "Modder Support".

Though if you don't know Java we won't teach it, there are plenty of tutorials out there for that. Now the last step is to modify the snippet of code I gave to suit  your own needs if you run into any trouble after that come back.

Sorry I must have misread the title of this forum thread, I was fairly sure it said "Modder Support".

 

From the description of this section:

This is the support section for those modding with Forge. Help with modding goes in here, however, please keep in mind that this is not a Java school. You are expected to have basic knowledge of Java before posting here.

Oh jesus christ.  You can't just do this:

public static String absolutePath = preevent.getSourceFile().getAbsolutePath();

 

Also, "preevent" doesn't even exist in your event methods.

 

public static String absolutePath;

public void preInit(FMLPreInitializationEvent event) {
    absolutePath = event.getSourceFile().getAbsolutePath();
}

 

Go learn Java.

Sorry I must have misread the title of this forum thread, I was fairly sure it said "Modder Support".

Though if you don't know Java we won't teach it, there are plenty of tutorials out there for that. Now the last step is to modify the snippet of code I gave to suit  your own needs if you run into any trouble after that come back.

 

I can't create the substring for some reason but this is my code:

 

package com.simpleafk;

import java.io.BufferedOutputStream;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.Charset;
import java.nio.file.CopyOption;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.List;

import net.minecraft.command.CommandBase;
import net.minecraft.command.CommandException;
import net.minecraft.command.ICommandSender;
import net.minecraft.util.ChatComponentText;

public class WhitelistAdd extends CommandBase {
private static final String FILE_PATH = "";


@Override
public String getCommandName() {
	// TODO Auto-generated method stub
	return "wparty";
}

@Override
public String getCommandUsage(ICommandSender sender) {
	// TODO Auto-generated method stub
	return "wparty <username>";
}
@Override
public boolean canCommandSenderUseCommand(ICommandSender icommandsender) {

	return true;
}
@Override
public void processCommand(ICommandSender sender, String[] args) throws CommandException {
	// TODO Auto-generated method stub
	if (args.length == 0){
		sender.addChatMessage(new ChatComponentText("You must specify a valid username!"));
	}
	else {

		String user = args[1];
		if (args[0] == "add") 



			if (user.length() == 0){

			}
			else {
				// The name of the file to open.
		        String fileName = "whitelist.txt";
		        String filePath = AFKMain.absolutePath + "\\whitelist.txt";
		        

		        try {
		            // Assume default encoding.
		            FileWriter fileWriter =
		                new FileWriter(filePath);

		            // Always wrap FileWriter in BufferedWriter.
		            BufferedWriter bufferedWriter =
		                new BufferedWriter(fileWriter);

		            // Note that write() does not automatically
		            // append a newline character.
		            bufferedWriter.write(user);
		            
		            bufferedWriter.newLine();
		            
		           

		            // Always close files.
		            bufferedWriter.close();
		        }
		        catch(IOException ex) {
		            System.out.println(
		                "Error writing to file '"
		                + fileName + "'");
		            // Or we could just do this:
		            // ex.printStackTrace();

		        }
			}

		    





		else if (args[0] == "clear"){

		}
		else if (args[0] == "remove"){

		}
}
}
}

 

The rest is from the tutorial you linked me to. It still does not create a file anywhere.

Show me the preInit

Show me the preInit

@EventHandler
    public void preInit(FMLPreInitializationEvent event)
    {
    	
    	 absolutePath = event.getSourceFile().getAbsolutePath();
    	MinecraftForge.EVENT_BUS.register(new ChatListener());
    	
    }

You did not implement this

File file = File("C:\\abcfolder\\textfile.txt");
String absolutePath = file.getAbsolutePath();
String filePath = absolutePath.substring(0,absolutePath.lastIndexOf(File.separator));
// ^Important part

You did not implement this

File file = File("C:\\abcfolder\\textfile.txt");
String absolutePath = file.getAbsolutePath();
String filePath = absolutePath.substring(0,absolutePath.lastIndexOf(File.separator));
// ^Important part

 

So I've added this to the processCommand:

 

File file = new File(AFKMain.absolutePath + "\whitelist.txt");
	String absolutePath = file.getAbsolutePath();
	String filePath = absolutePath.substring(0,absolutePath.lastIndexOf(File.separator));

 

What else do I need to do, I wouldn't have thought it would be this hard

You need the variable in your main mod class to the substring stuff.