Solved Getting an argument from a command and using it as the name of a class.

Hello Bukkit Development Forum.

I have been pondering this idea for awhile now and I know it is possible but I do not know how to do it.

Basically, I am trying to use one of the arguments from a command (args[2]) and use it for an instance of a class I have made. Let me show you:

Code:

    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {

        if(cmd.getName() == "arena") {
           
            if(args[0] == "create") {
               
                if(args[1] == "arena") {
                   
                    MainBase.addArena(args[2]);
                   
                }
               
            }
           
        }

        return false;
       
    }

So, with that stated let me show you the next part.

This is my Arena class, this is the class I am trying to create another instance of with this command.

Code:

import java.util.ArrayList;

public class Arena {

    public static String name;
    public static ArrayList<String> teams = new ArrayList<String>();
   
    public static void addTeam(Team teamName) {
       
        teamName = new Team();
       
       
    }   
   
}

Now lastly, the MainBase class.

Code:

public class MainBase {
           
    public static void addArena(String name) {
       
       
       
    }
   
}

It is really nothing. And why? As I do not know how to use name, which I have obtained from the command, to make a new Arena();

Thanks for the help!

 

@EscapeMC
You cannot create multiple instance of your arena class since the field name is static. Static field are unique.

Remove the keyworld static then create a constructor with a string as parameter.
Then you will be able to do a 'new Arena(args[2])'

 

@Caderape2 Where should I remove static? I did do the constructor and it seems to be fine.

 

@EscapeMC Remove all static from your arena class. As i said, static field are unique. So you cannot create two differents instance of this class.

 

@Caderape2 Thank you very much! Is this all I have to do to have of the Arena class? And they are all different/seperate from one another?

 

@EscapeMC Each instance is unique, even if the name is the same. It's why you have to store your instance if you wanna do stuff with it later.
Get a look at this small example.

Code:

public class ArenaManager {

 
 
    public List<Arena> arenas = new ArrayList<>();
 
 
 
    public ArenaManager()
    {     
        arenas.add(new Arena("arena1"));
        arenas.add(new Arena("arena2"));
        arenas.add(new Arena("arena3"));
     
        sendArena1Broadcast();
    }
 
 
 
    private void sendArena1Broadcast()
    {
        Arena first = getArenaByName("arena1");
        if (first != null)  first.sendBrodcast();
    }



    public Arena getArenaByName(String name)
    {
        for (Arena a : arenas)
        {
            if (a.getName().equals(name)) return a;
        }
     
        return null;
    }
 
 
 
 
 
    public class Arena
    {
        private final String name;
     
        public Arena(String name)
        {
            this.name = name;
        }
     

        public String getName() {
            return name;
        }
     
        public void sendBrodcast() {
            Bukkit.broadcastMessage("name : " + name);
        }
    }
}

 

@Caderape2 Ok I get it now.

Now, I have teams within the Arenas. Would I do the same process, with inside of Arena class, make an ArrayList<Team> ? If I wanted to assign a player to that team, how would I? Would I make an ArrayList<String> within the Team class and add a player name to that? Would that specifically make them assigned to the team within the arena, or just the team class itself?

EDIT:
I have come to an issue. Am I able to make the methods I have to add a team static? But that would require me to make the teams and arenas static as well... Aghhh!!! Can I do that?

 

I am trying to access them from my main class. I have two classes right now (Using Eclipse), Main and MainBase. Main is the main class, where I have my commands. I will make a github for this one minute

EDIT

Here
https://github.com/EscapeMC/ArenaPluginRefined

 

In a config would work right?

Or would a yml be better?

 

Not sure what you mean then about "where to store it."

 

I have a variable called arenas, and then one for teams called teams. You can look at my GitHub for this if you wish https://github.com/EscapeMC/ArenaPluginRefined

 

The Arenas and Teams are supposed to be able to be created by the sender with a command. How am I supposed to link the two together? I cannot use the addArena method in Main as it is not static so what are you telling me to do to fix it?

 

Sorry, new-ish with Java. How would I create this instance? Its not reflections right..?

 

I know Java but I have not had to do these kinds of things before. I have never worked with Bukkit before (well, at least very little experience).

Would you please just point me in the direction I need to go with instances?

 

I know they are not, I just haven't dealt with them before as I have not needed to

But thank you for helping, I will see where this will get me!

Expect me to be back soon... Should I use the same later, I assume so?

Alright so I am back.

I am trying to figure out how to add players to a team. Now, I know I can just make a String list (Like i have done in the past) but I am trying to figure out how to make a list per team.

But I am not sure how to do this. The command i have formats like /arena create team [team name] [the arena for the team]
But I cannot figure out how to test if that arena is an arena, then add a team to that arena.

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

 

But how would I add that team to the specific arena that the sender specifies? I cannot do args[3].teams.add(args[2]) as all of those args are Strings.

You can reference my github.
https://github.com/EscapeMC/ArenaPl...er/src/com/github/escapemc/arenapluginrefined

 

Alright. Doing this was simple. But now I would need to make a new instance of the Arena class, yes?
Well, for the arena class it would need name (as a String). What do I make it? How about ex.
I get an error with this. Hm.

On top of that, with the arena instance having this name, how would it be separate arenas and teams for those arenas?

Sorry just not seeing how the finished product will look.
GitHub updated too