void Update()
    {
        if (Enemy == null && PlayerGM.GetComponent <Character>().CanEnemyBeSpawn() && XmlLoader.NextEnemyTime(NextEnemyInt, NextLevelInt, Time.time - LastEnemyDied) <= 0)
        {
            Enemy = XmlLoader.CreateEnemy(PlayerGM, NextEnemyInt++, NextLevelInt);
            if (Enemy == null && PlayerGM.GetComponent <LevelUper>() == null)
            {
                EndLevel();
            }
        }

        if (Input.GetKeyDown(KeyCode.Escape))
        {
            Application.Quit();
        }
    }