/// <summary>
/// Loads the asteroids.
/// </summary>
private void LoadAsteroids()
{
for (int i = 0; i < LevelManager.GetInstance().NbAsteroids; i++)
{
Asteroid ast = new Asteroid(Content.Load<Texture2D>("Graphics\\sprites\\asteroid_big"), Vector2.Zero, i, AsteroidSize.large);
ast.AddObserver(ui);
LevelManager.GetInstance().Asteroids.Add(ast);
}
}
