public static Level One()
        {
            Level one = new Level();
            Phase first = new Phase(0);
            Player player = Player.Instance;

            int current = 0, last = 0;
            for (int i = 1; i < 101; i++)
            {
                while (current == last)
                    current = GameCore.Rng.Next(0, 4);
                var v = Formation.VShape(new Vector2(150 + 250 * current, -200 - 700 * (i - 1)), MathHelper.PiOver2 / 1.4F, 70, 5,
                    Enemy.Standard(new Vector2(0, 0), new Vector2(0, -5F)));
                foreach (var e in v.Enemies)
                {
                    e.Dying += (sender, args) => player.Points++;
                    e.Dead += (sender, args) => first.Enemies.Remove(sender as Enemy);
                    e.OutOfBounds += (sender, args) => first.Enemies.Remove(sender as Enemy);
                    first.Enemies.Add(e);
                }
                last = current;
            }
            one.phases.AddPhase(first);
            return one;
        }
 public static Level Two()
 {
     Level two = new Level();
     return two;
 }
 public static Level Three()
 {
     Level three = new Level();
     return three;
 }