Need Help figuring out how to accomplish plugin goal

Hi. I was asked by a friend to develop a plugin for them, and it initially seemed like a feasible task. Now, I'm unsure of how to proceed. This is the general idea of the plugin: Players can increase the spawning rate of mob spawners, by clicking on it, and clicking a confirmation text. This will cost xp (experience that's built into vanilla Minecraft.

I've tried Googleing, but to no avail. Can somebody give me some steps in the right direction. I've tried researching on modifying metadata and NBT tags, but from the tiny bit I could understand, it didn't help. If you could, can you provide me with basic example code. Sometimes trying to understand the documentation and some forums is almost impossible for me, so if you would't mind, that would be amazing. Thanks!

 

@coderboy14
When a player clicks a mob spawner, you can customize the spawn rate using CreatureSpawner#setDelay(TICKS);.

 

Thank you. I just can't figure out how to get it to work. This is what I've done

Code:

if (event.getAction().equals(Action.RIGHT_CLICK_BLOCK)) {

            event.getClickedBlock().setDelay(0);

        }

Thanks in advance.

 

@coderboy14
You have to cast the block's state to a CreatureSpawner first before you can use that method. So use something like:

Code:

            ((CreatureSpawner)event.getClickedBlock().getState()).setDelay(0);

 

Thank you. Thank fixed it, and now it's working.

I though it was working; I put a bit of text to notify me when it's loaded, but it's not recognizing my clicks. Can you tell me what I did wrong?

Code:

import java.io.File;

import java.util.HashMap;



import org.bukkit.Bukkit;

import org.bukkit.Material;

import org.bukkit.block.CreatureSpawner;

import org.bukkit.command.Command;

import org.bukkit.command.CommandSender;

import org.bukkit.entity.Player;

import org.bukkit.event.block.Action;

import org.bukkit.event.player.PlayerInteractEvent;

import org.bukkit.plugin.java.JavaPlugin;



import net.minecraft.server.v1_11_R1.NBTTagCompound;



public class Main extends JavaPlugin {

   

    intspeedChange = 10;

    intcostperLevel = 10;

   

    HashMap<String, CreatureSpawner> playerData = new HashMap<String, CreatureSpawner>();

   

    public void onEnable() {

        System.out.println("==============================================================PLUGIN RAN=============================");

        Bukkit.broadcastMessage("This plugin is protected under the following agreements, which you can find at this link: ");

        Bukkit.broadcastMessage("https://www.gnu.org/licenses/gpl-3.0.en.html");

        Bukkit.broadcastMessage("Programmed by Ethan Manzi");

    }

    public void onPlayerInteract(PlayerInteractEvent event) {

         

        /*if (event.getAction.equals(Action.RIGHT_CLICK_BLOCK) {

         

        //Do Stuff

         

        }*/

       

        if (event.getAction().equals(Action.RIGHT_CLICK_BLOCK)) {

            System.out.println("YOLOLOLOLOLOLOLOLOLOL");

            if (event.getClickedBlock().getType() == Material.MOB_SPAWNER) {

            CreatureSpawner n = ((CreatureSpawner)event.getClickedBlock().getState());

            Player p = event.getPlayer();

            //double xp = p.getExp();

            playerData.put(p.getName(), n);

            p.sendMessage("To upgrade this spawners speed from " + n.getDelay() * 4 + "/s to " + (n.getDelay()+speedChange) + "/s, with a cost"

                    + "of " + (((n.getDelay()*4)/speedChange)*costperLevel) + " xp, type /acceptUpgrade");

        }

        }

    }

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

        if (cmd.getName().equalsIgnoreCase("/acceptupgrade")) {

            CreatureSpawner c = playerData.get(sender.getName());

            Player p = Bukkit.getServer().getPlayer(sender.getName());

            double xp = p.getExp();

            if (xp>costperLevel) {

                xp = xp - costperLevel;

                c.setDelay(c.getDelay() - speedChange);

                p.setExp((float) xp);

                p.sendMessage("You have sucessfully upgraded the spawner!");

            } else {

                p.sendMessage("Insufficent XP");

            }

        }

       

        returntrue;

    }

}

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

 

Okay, I did that. Still, neither the message my player should get, nor the terminal message, are coming up.

Code:

import java.io.File;

import java.util.HashMap;



import org.bukkit.Bukkit;

import org.bukkit.Material;

import org.bukkit.block.CreatureSpawner;

import org.bukkit.command.Command;

import org.bukkit.command.CommandSender;

import org.bukkit.entity.Player;

import org.bukkit.event.EventHandler;

import org.bukkit.event.block.Action;

import org.bukkit.event.player.PlayerInteractEvent;

import org.bukkit.plugin.java.JavaPlugin;



import net.minecraft.server.v1_11_R1.NBTTagCompound;



public class Main extends JavaPlugin {

   

    intspeedChange = 10;

    intcostperLevel = 10;

   

    HashMap<String, CreatureSpawner> playerData = new HashMap<String, CreatureSpawner>();

   

    public void onEnable() {

        System.out.println("==============================================================PLUGIN RAN=============================");

        Bukkit.broadcastMessage("This plugin is protected under the following agreements, which you can find at this link: ");

        Bukkit.broadcastMessage("https://www.gnu.org/licenses/gpl-3.0.en.html");

        Bukkit.broadcastMessage("Programmed by Ethan Manzi");

    }

    @EventHandler

    public void onPlayerInteract(PlayerInteractEvent event) {

         

        /*if (event.getAction.equals(Action.RIGHT_CLICK_BLOCK) {

         

        //Do Stuff

         

        }*/

       

        if (event.getAction().equals(Action.RIGHT_CLICK_BLOCK)) {

            System.out.println("YOLOLOLOLOLOLOLOLOLOL");

            if (event.getClickedBlock().getType() == Material.MOB_SPAWNER) {

            CreatureSpawner n = ((CreatureSpawner)event.getClickedBlock().getState());

            Player p = event.getPlayer();

            //double xp = p.getExp();

            playerData.put(p.getName(), n);

            p.sendMessage("To upgrade this spawners speed from " + n.getDelay() * 4 + "/s to " + (n.getDelay()+speedChange) + "/s, with a cost"

                    + "of " + (((n.getDelay()*4)/speedChange)*costperLevel) + " xp, type /acceptUpgrade");

        }

        }

    }

    @EventHandler

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

        if (cmd.getName().equalsIgnoreCase("/acceptupgrade")) {

            CreatureSpawner c = playerData.get(sender.getName());

            Player p = Bukkit.getServer().getPlayer(sender.getName());

            double xp = p.getExp();

            if (xp>costperLevel) {

                xp = xp - costperLevel;

                c.setDelay(c.getDelay() - speedChange);

                p.setExp((float) xp);

                p.sendMessage("You have sucessfully upgraded the spawner!");

            } else {

                p.sendMessage("Insufficent XP");

            }

        }

       

        returntrue;

    }

}

 

I forgot; how do I do that. It's been a while since I've done anything Bukkit related.

 

@coderboy14
getServer().getPluginManager().registerEvents(LISTENER, MAINCLASS);