public void Update(CanvasBitmap alienImage, CanvasBitmap shipImage, CanvasBitmap laserImage)//CanvasDrawingSession image)// { if (gameOver == false) { if (MoveShipLeft(ship.MoveLeft) == true || MoveShipRight(ship.MoveRight) == true) { ship.Update(); } alien.Update(); drawables.Add(ship); for (int i = 0; i < 10; i++) { drawables.Add(AlienList[i]); } if (Gamepad.Gamepads.Count > 0) { controller = Gamepad.Gamepads.First(); var reading = controller.GetCurrentReading(); if (reading.Buttons.HasFlag(GamepadButtons.A)) { lasers.ShootLaser(laserImage, ship); lasers.Update(laserImage); lasers = new Lasers(lasers.X, lasers.Y, laserImage); drawables.Add(lasers); } } Collide(lasers, AlienList); gameOver = HitAll(AlienList); //if gameOver turns true, should quit if (gameOver == false) { int lastAlienToTouch = 0; for (int index = 1; index <= 10; index++) { if (AlienList[index - 1].GotHit == false && AlienList[index - 1].Y == 400) { lastAlienToTouch = index - 1; if (score.LivesLeft == 0) { gameOver = true; } } } } } }