/// <summary>
/// Notifies the specified subject.
/// </summary>
/// <param name="subject">The subject.</param>
public void Notify(ObservedSubject subject)
{
if (subject is Asteroid)
{
Asteroid ast = subject as Asteroid;
if (ast.Size == AsteroidSize.large)
{
UpdateScore(20);
}
else if (ast.Size == AsteroidSize.medium)
{
UpdateScore(50);
}
else
{
UpdateScore(100);
}
}
else if (subject is EnemyShip && (subject as EnemyShip).IsAlive == false)
{
EnemyShip ship = subject as EnemyShip;
if (ship.Type == TypeShip.bigBossShip)
{
UpdateScore(200);
}
}
else if (subject is PlayerShip)
{
if (!(subject as PlayerShip).IsAlive)
{
UpdateLife(PlayerShip.GetInstance().NumberOfLifes);
}
else if ((subject as PlayerShip).NumberOfLifes != this.numberOfLife)
{
this.numberOfLife = PlayerShip.GetInstance().NumberOfLifes;
}
else if (subject is Bonus)
{
if ((subject as Bonus).Type == BonusType.invincible)
{
bonusMessage = "Invincible";
}
}
}
else if (subject is Bonus)
{
if ((subject as Bonus).Type == BonusType.doublePoints)
{
if ((subject as Bonus).BonusTime > 0)
{
bonusMessage = "Double Points";
scoreMultiplier = 2;
}
else
{
bonusMessage = "";
scoreMultiplier = 1;
}
}
else if ((subject as Bonus).Type == BonusType.invincible)
{
if ((subject as Bonus).BonusTime > 0)
{
bonusMessage = "Invincible";
}
else
{
bonusMessage = "";
}
}
else if ((subject as Bonus).Type == BonusType.extraPoints)
{
if ((subject as Bonus).BonusTime > 0)
{
score += 1000;
}
}
else if ((subject as Bonus).Type == BonusType.slowDown)
{
if ((subject as Bonus).BonusTime > 0)
{
bonusMessage = "SlowMotio";
}
else
{
bonusMessage = "";
}
}
else if ((subject as Bonus).Type == BonusType.none)
{
if ((subject as Bonus).BonusTime == -1)
{
scoreMultiplier = 1;
bonusMessage = "";
}
}
}
}
/// <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);
}
}
/// <summary>
/// transforms bigger asteroids into smaller asteroids
/// </summary>
/// <param name="size">The size.</param>
/// <param name="bulletRotationAngle">The bullet rotation angle.</param>
private void AddSmallerAsteroid(AsteroidSize size, float bulletRotationAngle)
{
float newRotationAngle = (float)((Math.PI * 2) / 3);
Asteroid newAst1;
Asteroid newAst2;
LevelManager.GetInstance().DeadAsteroids.Add(this);
if (size == AsteroidSize.medium)
{
newAst1 = new Asteroid(Game1.contentManager.Load<Texture2D>("Graphics\\sprites\\asteroid_medium"), this.position, bulletRotationAngle + newRotationAngle, size);
newAst2 = new Asteroid(Game1.contentManager.Load<Texture2D>("Graphics\\sprites\\asteroid_medium"), this.position, bulletRotationAngle - newRotationAngle, size);
}
else
{
newAst1 = new Asteroid(Game1.contentManager.Load<Texture2D>("Graphics\\sprites\\asteroid_small"), this.position, bulletRotationAngle + newRotationAngle, size);
newAst2 = new Asteroid(Game1.contentManager.Load<Texture2D>("Graphics\\sprites\\asteroid_small"), this.position, bulletRotationAngle - newRotationAngle, size);
}
LevelManager.GetInstance().Asteroids.Add(newAst1);
LevelManager.GetInstance().Asteroids.Add(newAst2);
}