/// <summary>
/// Checks for collision with a list of observers.
/// If it touches a enemy or a asteroid, it asks the subject to add points to the score.
/// </summary>
/// <param name="list">The list.</param>
/// <param name="subject">The subject.</param>
/// <param name="elapsedGameTime">The elapsed game time.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
public override bool CheckForCollisionWithListOfObserver(List<IGameObjectObserver> list, Subject subject, TimeSpan elapsedGameTime)
{
foreach (IGameObjectObserver obj in list)
{
if (objectType == GAME_OBJECT_TYPE.FRIENDLY_LASER)
{
if (obj.GetObserved().ObjectType != GAME_OBJECT_TYPE.FRIENDLY_LASER && obj.GetObserved().ObjectType != GAME_OBJECT_TYPE.PLAYER)
{
if (CheckForCollisionWith(obj, elapsedGameTime))
{
subject.Hitter = obj;
subject.AddPoints(obj, elapsedGameTime);
return true;
}
}
}
else
{
if (obj.GetObserved().ObjectType != GAME_OBJECT_TYPE.UNFRIENDLY_LASER && obj.GetObserved().ObjectType != GAME_OBJECT_TYPE.ENEMY_SHIP && obj.GetObserved().ObjectType != GAME_OBJECT_TYPE.POWER_UP)
{
if (CheckForCollisionWith(obj, elapsedGameTime))
{
subject.Hitter = obj;
return true;
}
}
}
}
return false;
}
/// <summary>
/// Notifies the specified subject. Tells the subject to activate the power up.
/// </summary>
/// <param name="subject">The subject.</param>
/// <param name="elapsedGameTime">The elapsed game time.</param>
public override void Notify(Subject subject, TimeSpan elapsedGameTime)
{
List<IGameObjectObserver> list = subject.GetObserverList();
foreach (IGameObjectObserver observer in list)
{
if (observer.GetObserved().ObjectType == GAME_OBJECT_TYPE.ASTEROID)
{
Asteroid currentAsteroid = (Asteroid) observer.GetObserved();
currentAsteroid.GetSlowMo(elapsedGameTime);
}
}
}
/// <summary>
/// Sets the hitter.
/// </summary>
/// <param name="subject">The subject.</param>
/// <param name="hitter">The hitter.</param>
public void SetHitter(Subject subject, IGameObjectObserver hitter)
{
subject.Hitter = hitter;
}
/// <summary>
/// Notifies the specified subject. not used since we do not implement this class
/// </summary>
/// <param name="subject">The subject.</param>
/// <param name="elapsedGameTime">The elapsed game time.</param>
public virtual void Notify(Subject subject, TimeSpan elapsedGameTime)
{
//throw new NotImplementedException();
}
/// <summary>
/// Gets the object that hits the object.
/// </summary>
/// <param name="subject">The subject.</param>
/// <returns>IGameObjectObserver.</returns>
public IGameObjectObserver GetHitter(Subject subject)
{
return subject.Hitter;
}
/// <summary>
/// Checks for collision with a list of observers.
/// </summary>
/// <param name="list">The list.</param>
/// <param name="subject">The subject.</param>
/// <param name="elapsedGameTime">The elapsed game time.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
public virtual bool CheckForCollisionWithListOfObserver(List<IGameObjectObserver> list, Subject subject, TimeSpan elapsedGameTime)
{
bool intersects = false;
foreach (IGameObjectObserver observer in list)
{
intersects = CheckForCollisionWith(observer, elapsedGameTime);
if (intersects)
{
SetHitter(subject, observer);
Notify(subject, elapsedGameTime);
break;
}
}
return intersects;
}
/// <summary>
/// Adds points to score by passing a observer that observe a game object.
/// </summary>
/// <param name="subject">The subject.</param>
/// <param name="destroyedObjectObserver">The destroyed object observer.</param>
/// <exception cref="NotImplementedException"></exception>
public void AddPoints(Subject subject, IGameObjectObserver destroyedObjectObserver)
{
throw new NotImplementedException();
}
/// <summary>
/// Notifies the specified subject. this is used to add projectiles in the list of observer in the manager
/// </summary>
/// <param name="subject">The subject.</param>
/// <param name="elapsedGameTime">The elapsed game time.</param>
public override void Notify(Subject subject, TimeSpan elapsedGameTime)
{
subject.AddObserver(this);
}
/// <summary>
/// Notifies the specified subject. Tells the subject to activate the double points multiplier
/// </summary>
/// <param name="subject">The subject.</param>
/// <param name="elapsedGameTime">The elapsed game time.</param>
public override void Notify(Subject subject, TimeSpan elapsedGameTime)
{
subject.ActivateDoublePoints(elapsedGameTime);
}
/// <summary>
/// Checks for collision with a list of observers.
/// </summary>
/// <param name="list">The list.</param>
/// <param name="subject">The subject.</param>
/// <param name="elapsedGameTime">The elapsed game time.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
public override bool CheckForCollisionWithListOfObserver(List<IGameObjectObserver> list, Subject subject, TimeSpan elapsedGameTime)
{
foreach (IGameObjectObserver obj in list)
{
if (obj != this && obj.GetObserved().ObjectType != GAME_OBJECT_TYPE.PLAYER)
{
if (CheckForCollisionWith(obj, elapsedGameTime))
{
subject.Hitter = obj;
subject.AddPoints(obj, elapsedGameTime);
return true;
}
}
}
return false;
}
/// <summary>
/// Notifies the specified subject. Tells the subject to activate the fast fire power up
/// </summary>
/// <param name="subject">The subject.</param>
/// <param name="elapsedGameTime">The elapsed game time.</param>
public override void Notify(Subject subject, TimeSpan elapsedGameTime)
{
Player.GetInstance().ActivateFastFire(elapsedGameTime);
}