Bukkit Scheduler Problem

Hey, I have a problem with the Bukkit schedulers, I wrote a plugin that allows to use Slimeballs as grenades, the problem is that when I throw two grenades, then it does not work. Here is the Code(thanks in advance):

Code:

package me.benfah.main;

import org.bukkit.Bukkit;
import org.bukkit.Effect;
import org.bukkit.EntityEffect;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.Sound;
import org.bukkit.entity.Item;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.Action;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.plugin.java.JavaPlugin;

public class Main extends JavaPlugin implements Listener {

   
    public int schedule;
    public int schedule2;
    public int schedule3;
    public int schedule4;
    public int schedule5;
   
   
    public void onEnable(){
       
        getServer().getPluginManager().registerEvents(this, this);
       
    }
   
    @SuppressWarnings("deprecation")
    @EventHandler
    public void onInteract(PlayerInteractEvent e) throws InterruptedException{
       
        Player p = e.getPlayer();
       
       
       
       
        if(e.getAction() == Action.RIGHT_CLICK_AIR || e.getAction() == Action.RIGHT_CLICK_BLOCK){
            if(p.getInventory().getItemInHand().getType() == Material.SLIME_BALL){
               
                final Item ent = p.getWorld().dropItem(p.getEyeLocation(), new ItemStack(Material.SLIME_BALL));       
                ent.setVelocity(p.getEyeLocation().getDirection().multiply(1.5));
                p.getInventory().remove(p.getItemInHand());
                ent.setPickupDelay(25000);
               
                Bukkit.getScheduler().scheduleAsyncRepeatingTask(this, new Runnable(){
   
                        @Override
                        public void run() {
                           
                            ent.getWorld().playSound(ent.getLocation(),Sound.ITEM_PICKUP, 2, 2);
                            ent.getWorld().playEffect(ent.getLocation(),Effect.SMOKE, 1);
                            if(ent.isDead()){
                                Bukkit.getScheduler().cancelTask(schedule);
                               
                            }
                        }
                       
                       
                    }, 0L, 1L);
               
               
                   
                Bukkit.getScheduler().scheduleAsyncDelayedTask(this, new Runnable(){

                    @Override
                    public void run() {
                        Location loc = ent.getLocation();
                        ent.getWorld().createExplosion(loc.getX(), loc.getY(), loc.getZ(), 4, false, false);
                        ent.remove();
                        Bukkit.getScheduler().cancelTask(schedule);
                       
                    }
                   
                   
                   
                }, 20L*2L);
               
            }
               
        }
           
       
       
       
       
       
       
       
       
       
    }

   
   
}

 

You can't use Async schedulers for most BukkitAPI methods—particularly, things dealing with Worlds. I suggest you use a Sync scheduler instead.

 

@benfah
@ColonelHedgehog

Or even better....

Code:

new BukkitRunnable(){
   public void run(){
      //code
   }
}.runTaskLater(plugin,20);

//or...

new BukkitRunnable(){
   public void run(){
      //code
      if (a variable is true){
         this.cancel(); /*cancel task*/
         return;
      }
   }
}.runTaskTimer(plugin,0,40);

- Minty