GameManager

using UnityEngine;
using System.Collections;

public class GameManager : BaseManager
{
    //Variavel estática do GameManager
    private static GameManager _instance;

    /// <summary>
    /// Pega a instancia do GameManager
    /// </summary>
    /// <returns>The instance.</returns>
    public static GameManager GetInstance ()
    {
        if (_instance == null)
            _instance = GetInstance<GameManager>(typeof(GameManager));

        return _instance;
    }

    //As variáveis dos managers
    ManagerEconomy _managerEconomy;
    ManagerEnemiesComing _managerEnemies;
    ManagerGlobal _managerGlobal;
    ManagerSave _managerSave;
    ManagerSoldierUpgrades _managerSoldierUpgrades;

    public sealed override void Init ()
    {
        // Verificando se existe a instancia
        if (CheckExistManager<GameManager>(_instance))
            return;

        // Inicializar os managers de GameManager
        GetManagerEconomy();
        GetManagerEnemies();
        GetManagerGlobal();
        GetManagerSave();
        GetManagerSoldierUpgrades();
    }

    #region Managers do GameManager
    public ManagerEconomy GetManagerEconomy ()
    {
        if (_managerEconomy == null)
            _managerEconomy = (ManagerEconomy)GetManager(typeof(ManagerEconomy));

        return _managerEconomy;
    }

    public ManagerEnemiesComing GetManagerEnemies ()
    {
        if (_managerEnemies == null)
            _managerEnemies = (ManagerEnemiesComing)GetManager(typeof(ManagerEnemiesComing));

        return _managerEnemies;
    }

    public ManagerGlobal GetManagerGlobal ()
    {
        if (_managerGlobal == null)
            _managerGlobal = (ManagerGlobal)GetManager(typeof(ManagerGlobal));

        return _managerGlobal;
    }

    public ManagerSave GetManagerSave ()
    {
        if (_managerSave == null)
            _managerSave = (ManagerSave)GetManager(typeof(ManagerSave));

        return _managerSave;
    }

    public ManagerSoldierUpgrades GetManagerSoldierUpgrades ()
    {
        if (_managerSoldierUpgrades == null)
            _managerSoldierUpgrades = (ManagerSoldierUpgrades)GetManager(typeof(ManagerSoldierUpgrades));

        return _managerSoldierUpgrades;
    }
    #endregion

    // Override da CheckExistManager da classe BaseManager
    public override bool CheckExistManager<T> (T instance)
    {
        if (Application.loadedLevelName.Equals("MainMenu"))
        {
            if (instance)
            {
                Destroy(gameObject);
                return true;
            }
        }

        return base.CheckExistManager (instance);
    }
}