How to send a request for someone to duel?

I have a PvP plugin and I would like to know how to send a request if a player would like to duel after a right click, with a timeout. Here is my current code:

Code:

   @EventHandler()
public void playerOneCl(PlayerInteractEntityEvent e) {
        
         if (e.getPlayer().getInventory().getItemInHand().getType() == Material.BLAZE_ROD) {
           
             e.getPlayer().sendMessage("Starting...");
             if(e.getRightClicked() instanceof Player) {
                 if (dict.get(e.getRightClicked())== null) {
             Player p = (Player) e.getRightClicked();
             p.sendMessage(ChatColor.GREEN + "" + e.getPlayer().getName() + "has started a duel");
             Title title = new Title("You're dueling with " , p.getName(),4,5,4);
             title.setTitleColor(ChatColor.RED);
             title.setSubtitleColor(ChatColor.GREEN);

             title.send(e.getPlayer());
             
             e.getPlayer().sendMessage(ChatColor.GOLD + "Duel started");
             for (Player a : getServer().getOnlinePlayers())
              {
                if (!a.getName().equals(p.getName()) && !a.getName().equals(e.getPlayer().getName())) {
                  p.hidePlayer(a);
                  e.getPlayer().hidePlayer(a);
               
                }
                }
              ********
}

 

Make sure the item is not null. If the player is not holding anything, the item will be null and this will throw an NPE

What is this line? If this is a collection or map, use the .contains method instead of nullchecking.

Instead of cvomparing names, why not compare memory spaces. That reduced this to

Code:

if(a!=p&&a!=e.getPlayer)

Main problem: Since we do not know what system you currently have for sending or receiving requests, we cannot really help you. We will be able to help you once you post how you handle requests.

 

@Zombie_Striker I don't currently have a system for sending and receiving request, but I would like it to be a tellraw that runs a command when pressed and has a timeout, the dictionary is a command that tells you who the player is duelling, or if they are not duelling anyone.

 

And what exactly stops you from doing it?

 

@Lordloss I don't know how to make a command which stores them and has a timeout on each person.

 

@MinecraftBoxGut

Since it needs a timeout, I would create a data carrier Object that has two UUIDs (the sender and sendee) and a time the request was made (in milliseconds). You could foreseeably create a list of these requests, and then iterate over it to find matching requests, checking the timeout to see if they are still valid, and discarding invalid ones.