Listener

package me.Afro_.SpecialArrows;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.entity.Arrow;
import org.bukkit.entity.Entity;
import org.bukkit.entity.Monster;
import org.bukkit.entity.Player;
import org.bukkit.entity.Projectile;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.ProjectileHitEvent;
import org.bukkit.event.inventory.InventoryClickEvent;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.potion.PotionEffect;
import org.bukkit.potion.PotionEffectType;

public class Listen implements Listener {


    Inventory inv = Bukkit.getServer().createInventory(null, 18,
            ChatColor.BLUE + "Arrow Effect Toggler");

    public void openGUI(Player player) {

        ItemStack explodei = new ItemStack(Material.TNT);
        ItemMeta explodeiMeta = explodei.getItemMeta();
        ItemStack lightningi = new ItemStack(Material.GOLD_AXE);
        ItemMeta lightningiMeta = lightningi.getItemMeta();
        ItemStack teleporti = new ItemStack(Material.ENDER_PEARL);
        ItemMeta teleportiMeta = teleporti.getItemMeta();
        ItemStack radiatei = new ItemStack(Material.ROTTEN_FLESH);
        ItemMeta radiateiMeta = radiatei.getItemMeta();
        ItemStack torchi = new ItemStack(Material.TORCH);
        ItemMeta torchiMeta = torchi.getItemMeta();

        explodeiMeta.setDisplayName(ChatColor.RED + "Explode");
        explodei.setItemMeta(explodeiMeta);

        lightningiMeta.setDisplayName(ChatColor.GOLD + "Lightning");
        lightningi.setItemMeta(lightningiMeta);

        teleportiMeta.setDisplayName(ChatColor.LIGHT_PURPLE + "Teleport");
        teleporti.setItemMeta(teleportiMeta);

        radiateiMeta.setDisplayName(ChatColor.DARK_GREEN + "Radiate");
        radiatei.setItemMeta(radiateiMeta);

        torchiMeta.setDisplayName(ChatColor.YELLOW + "Torch");
        torchi.setItemMeta(torchiMeta);

        // -2-4-6-8-

        inv.setItem(1, explodei);
        inv.setItem(3, lightningi);
        inv.setItem(5, teleporti);
        inv.setItem(7, radiatei);
        inv.setItem(13, torchi);

        player.openInventory(inv);
    }

    @EventHandler
    public void p(ProjectileHitEvent e) {
        Projectile proj = e.getEntity();
        Arrow arrow = (Arrow) proj;
        final Player p = (Player) arrow.getShooter();
        if (proj instanceof Arrow) {
            if (arrow.getShooter() instanceof Player) {
                if (Main.explode.contains(p.getName())) {
                    if (p.hasPermission("specialarrows.explode")) {
                        if (Main.cooldown.contains(p.getName())) {
                            p.sendMessage(ChatColor.RED
                                    + "You must wait before using an effect again.");
                            return;
                        }
                        arrow.getWorld()
                                .createExplosion(arrow.getLocation(), 5);
                        Main.cooldown.add(p.getName());
                        Bukkit.getServer().getScheduler()
                                .scheduleSyncDelayedTask(plugin, new Runnable() {
                                    public void run() {
                                        Main.cooldown.remove(p.getName());
                                    }
                                }, 120);

                    }
                }
                if (Main.lightning.contains(p.getName())) {
                    if (p.hasPermission("specialarrows.lightning")) {
                        if (Main.cooldown.contains(p.getName())) {
                            p.sendMessage(ChatColor.RED
                                    + "You must wait before using an effect again.");
                            return;
                        }
                        arrow.getWorld().strikeLightning(arrow.getLocation());
                        Main.cooldown.add(p.getName());
                        Bukkit.getServer().getScheduler()
                                .scheduleSyncDelayedTask(plugin, new Runnable() {
                                    public void run() {
                                        Main.cooldown.remove(p.getName());
                                    }
                                }, 120);
                    }
                }
                if (Main.teleport.contains(p.getName())) {
                    if (p.hasPermission("specialarrows.teleport")) {
                        if (Main.cooldown.contains(p.getName())) {
                            p.sendMessage(ChatColor.RED
                                    + "You must wait before using an effect again.");
                            return;
                        }
                        p.teleport(arrow.getLocation());
                        p.sendMessage(ChatColor.BLUE
                                + "You have been teleported!");
                        Main.cooldown.add(p.getName());
                        Bukkit.getServer().getScheduler()
                                .scheduleSyncDelayedTask(plugin, new Runnable() {
                                    public void run() {
                                        Main.cooldown.remove(p.getName());
                                    }
                                }, 120);
                        // 20 ticks = 1 second

                    }
                }
                if (Main.radiate.contains(p.getName())) {
                    if (p.hasPermission("specialarrows.radiate")) {
                        if (Main.cooldown.contains(p.getName())) {
                            p.sendMessage(ChatColor.RED
                                    + "You must wait before using an effect again.");
                            return;
                        }

                        for (Entity en : arrow.getNearbyEntities(5, 5, 5)) {

                            if (en instanceof Player || en instanceof Monster) {
                                ((Player) en).addPotionEffect(new PotionEffect(
                                        PotionEffectType.POISON, 200, 1));
                                ((Monster) en)
                                        .addPotionEffect(new PotionEffect(
                                                PotionEffectType.POISON, 200, 1));

                                ParticleEffect.SMOKE_LARGE.display(0, 0, 0, 5, 30, arrow.getLocation(), 10);

                                Main.cooldown.add(p.getName());
                                Bukkit.getServer()
                                        .getScheduler()
                                        .scheduleSyncDelayedTask(plugin,
                                                new Runnable() {
                                                    public void run() {
                                                        Main.cooldown.remove(p
                                                                .getName());
                                                    }
                                                }, 120);
                            }

                        }
                    }

                }
                if (Main.torch.contains(p.getName())) {
                    if (p.hasPermission("specialarrows.torch")) {
                        if (Main.cooldown.contains(p.getName())) {
                            p.sendMessage(ChatColor.RED
                                    + "You must wait before using an effect again.");
                            return;
                        }

                        Location loc = arrow.getLocation();
                        loc.getBlock().setType(Material.TORCH);
                        Bukkit.getServer().getScheduler()
                                .scheduleSyncDelayedTask(plugin, new Runnable() {
                                    public void run() {
                                        Main.cooldown.remove(p.getName());
                                    }
                                }, 240);

                    }

                }
            }
        }
    }

    @EventHandler
    public void onInventoryClick(InventoryClickEvent e) {
        if (!e.getInventory().equals(inv))
            return;
        else
            e.setCancelled(true);
        if (e.getCurrentItem().getItemMeta().getDisplayName()
                .contains("Explode")) {
            if (Main.lightning.contains(e.getWhoClicked().getName())
                    || Main.teleport.contains(e.getWhoClicked().getName())
                    || Main.radiate.contains(e.getWhoClicked().getName())
                    || Main.torch.contains(e.getWhoClicked().getName())) {
                e.getWhoClicked().sendMessage(
                        ChatColor.RED
                                + "You can only have one toggled at a time!");
            } else if (!Main.explode.contains(e.getWhoClicked().getName())) {
                Main.explode.add(e.getWhoClicked().getName());
                e.getWhoClicked()
                        .sendMessage(
                                ChatColor.GREEN
                                        + "Exploding arrows have been enabled!");
            } else {
                Main.explode.remove(e.getWhoClicked().getName());
                e.getWhoClicked().sendMessage(
                        ChatColor.RED + "Exploding arrows have been disabled.");
            }
        }
        if (e.getCurrentItem().getItemMeta().getDisplayName()
                .contains("Lightning")) {
            if (Main.teleport.contains(e.getWhoClicked().getName())
                    || Main.explode.contains(e.getWhoClicked().getName())
                    || Main.radiate.contains(e.getWhoClicked().getName())
                    || Main.torch.contains(e.getWhoClicked().getName())) {
                e.getWhoClicked().sendMessage(
                        ChatColor.RED
                                + "You can only have one toggled at a time!");
            } else if (!Main.lightning.contains(e.getWhoClicked().getName())) {
                Main.lightning.add(e.getWhoClicked().getName());
                e.getWhoClicked()
                        .sendMessage(
                                ChatColor.GREEN
                                        + "Lightning arrows have been enabled!");
            } else {
                Main.lightning.remove(e.getWhoClicked().getName());
                e.getWhoClicked().sendMessage(
                        ChatColor.RED + "Lightning arrows have been disabled.");
            }
        }
        if (e.getCurrentItem().getItemMeta().getDisplayName()
                .contains("Teleport")) {
            if (Main.lightning.contains(e.getWhoClicked().getName())
                    || Main.explode.contains(e.getWhoClicked().getName())
                    || Main.radiate.contains(e.getWhoClicked().getName())
                    || Main.torch.contains(e.getWhoClicked().getName())) {
                e.getWhoClicked().sendMessage(
                        ChatColor.RED
                                + "You can only have one toggled at a time!");
            } else if (!Main.teleport.contains(e.getWhoClicked().getName())) {
                Main.teleport.add(e.getWhoClicked().getName());
                e.getWhoClicked().sendMessage(
                        ChatColor.GREEN
                                + "Teleporting arrows have been enabled!");
            } else {
                Main.teleport.remove(e.getWhoClicked().getName());
                e.getWhoClicked().sendMessage(
                        ChatColor.RED
                                + "Teleporting arrows have been disabled.");
            }
        }
        if (e.getCurrentItem().getItemMeta().getDisplayName()
                .contains("Radiate")) {
            if (Main.teleport.contains(e.getWhoClicked().getName())
                    || Main.explode.contains(e.getWhoClicked().getName())
                    || Main.lightning.contains(e.getWhoClicked().getName())
                    || Main.torch.contains(e.getWhoClicked().getName())) {
                e.getWhoClicked().sendMessage(
                        ChatColor.RED
                                + "You can only have one toggled at a time!");
            } else if (!Main.radiate.contains(e.getWhoClicked().getName())) {
                Main.radiate.add(e.getWhoClicked().getName());
                e.getWhoClicked().sendMessage(
                        ChatColor.GREEN + "Radiate arrows have been enabled!");
            } else {
                Main.radiate.remove(e.getWhoClicked().getName());
                e.getWhoClicked().sendMessage(
                        ChatColor.RED + "Radiate arrows have been disabled.");
            }
        }
        if (e.getCurrentItem().getItemMeta().getDisplayName().contains("Torch")) {
            if (Main.teleport.contains(e.getWhoClicked().getName())
                    || Main.explode.contains(e.getWhoClicked().getName())
                    || Main.lightning.contains(e.getWhoClicked().getName())
                    || Main.radiate.contains(e.getWhoClicked().getName())) {
                e.getWhoClicked().sendMessage(
                        ChatColor.RED
                                + "You can only have one toggled at a time!");

            } else if (!Main.torch.contains(e.getWhoClicked().getName())) {
                Main.torch.add(e.getWhoClicked().getName());
                e.getWhoClicked().sendMessage(
                        ChatColor.GREEN + "Torch arrows have been enabled!");
            } else {
                Main.torch.remove(e.getWhoClicked().getName());
                e.getWhoClicked().sendMessage(
                        ChatColor.RED + "Torch arrows have been disabled.");
            }
        }
    }

}