CREER UN PLUGIN BUKKIT #14 - Les Menus (Inventory GUI)

package ep14;

import java.util.ArrayList;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
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.plugin.java.JavaPlugin;

public class ep14 extends JavaPlugin implements Listener{


	public ArrayList<Player> online = new ArrayList<>();

	@Override
	public void onEnable() {
		Bukkit.getPluginManager().registerEvents(this, this);
	}

	@Override
	public boolean onCommand(CommandSender sender, Command cmd,	String label, String[] args) {
		if(!(sender instanceof Player)){
			sender.sendMessage("§4Tu dois etre un joueur !");
		}
		if(cmd.getName().equalsIgnoreCase("menu")
				&&(sender.isOp())){
			Player p = (Player) sender;
			Menu(p);
		}
		return true;
	}

	public void Menu(Player p){

		Inventory inv = Bukkit.createInventory(null, 54, ChatColor.AQUA+"Menu "+ChatColor.RED+"Admin");
		/*Feed*/
		ItemStack gateau = new ItemStack(Material.CAKE);
		ItemMeta gateaum = gateau.getItemMeta();

		gateaum.setDisplayName(ChatColor.DARK_GREEN+"Feed");
		gateau.setItemMeta(gateaum);

		inv.setItem(2, gateau);
		/*Feed*/

		/*Vie*/
		ItemStack potion = new ItemStack(Material.POTION);
		ItemMeta potionm = potion.getItemMeta();

		potion.setDurability((short)8251);
		potionm.setDisplayName(ChatColor.LIGHT_PURPLE+"Heal");
		potion.setItemMeta(potionm);

		inv.setItem(4, potion);
		/*Vie*/


		/*NB*/
		ItemStack head = new ItemStack(Material.BED);
		ItemMeta headm = head.getItemMeta();

		headm.setDisplayName(ChatColor.GOLD+"Joueurs: "+Bukkit.getOnlinePlayers().length);
		head.setItemMeta(headm);

		inv.setItem(6, head);
		/*NB*/



		p.openInventory(inv);
	}



	@EventHandler
	public void InventoryClick(InventoryClickEvent e){
		if(ChatColor.stripColor(e.getInventory().getName()).equalsIgnoreCase("Menu Admin")){
			Player p = (Player) e.getWhoClicked();
			e.setCancelled(true);
		}
		if(e.getCurrentItem() == null || e.getCurrentItem().getType() == Material.AIR){
			return;
		}

		switch(e.getCurrentItem().getType()){
		case CAKE:
			Player p = (Player) e.getWhoClicked();
			p.setFoodLevel(20);
			p.closeInventory();
			break;
		case POTION:
			Player p2 = (Player) e.getWhoClicked();
			p2.setHealth(20);
			p2.closeInventory();
			break;
		case BED:
			Player p3 = (Player) e.getWhoClicked();
			p3.sendMessage("§6Il y a §4"+Bukkit.getOnlinePlayers().length+" §4joueurs §6en ligne !");
			p3.closeInventory();
			break;

		default:
			break;
		}
	}

}