/// <summary>
/// Checks for collision with a object.
/// A collision with a unfriendly laser or another enemy ship will not cause its destruction.
/// </summary>
/// <param name="anotherObserver">Another observer.</param>
/// <param name="elapsedGameTime">The elapsed game time.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
public override bool CheckForCollisionWith(IGameObjectObserver anotherObserver, TimeSpan elapsedGameTime)
{
GAME_OBJECT_TYPE otherType = anotherObserver.GetObserved().ObjectType;
if (otherType == GAME_OBJECT_TYPE.UNFRIENDLY_LASER || otherType == GAME_OBJECT_TYPE.ENEMY_SHIP) return false;
return collisionSphere.Intersects(anotherObserver.GetObserved().CollisionSphere);
}
/// <summary>
/// Checks for collision with another object. Only activate the power up if the hitter is a player or a friendly bullet
/// </summary>
/// <param name="anotherObserver">Another observer.</param>
/// <param name="elapsedGameTime">The elapsed game time.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
public override bool CheckForCollisionWith(IGameObjectObserver anotherObserver, TimeSpan elapsedGameTime)
{
GAME_OBJECT_TYPE otherType = anotherObserver.GetObserved().ObjectType;
if (otherType == GAME_OBJECT_TYPE.PLAYER || otherType == GAME_OBJECT_TYPE.FRIENDLY_LASER)
{
ActivatePowerUp(elapsedGameTime);
return collisionSphere.Intersects(anotherObserver.GetObserved().CollisionSphere);
}
return false;
}
/// <summary>
/// Adds points to the score, depending on what was destroyed and if the x2 multiplier is activated.
/// </summary>
/// <param name="destroyedObjectObserver">The destroyed object observer.</param>
/// <param name="elapsedGameTime">The elapsed game time.</param>
public override void AddPoints(IGameObjectObserver destroyedObjectObserver, TimeSpan elapsedGameTime)
{
if (doublePoints)
{
if (lastTimePowerUpActivated == null || elapsedGameTime - lastTimePowerUpActivated >= X2_DURRATION)
doublePoints = false;
}
scoreBoard.AddPoints(destroyedObjectObserver.GetObserved(), doublePoints);
}
public override bool CheckForCollisionWith(IGameObjectObserver anotherObserver, TimeSpan elapsedGameTime)
{
if (anotherObserver.GetObserved().ObjectType == GAME_OBJECT_TYPE.POWER_UP) return false;
if (anotherObserver.GetObserved().ObjectType == GAME_OBJECT_TYPE.ASTEROID)
{
if (currentSize != Size.LARGE && ((Asteroid)anotherObserver.GetObserved()).CurrentSize == currentSize && anotherObserver != this && CanMerge(elapsedGameTime))
{
return collisionSphere.Intersects(anotherObserver.GetObserved().CollisionSphere);
}
else
{
return false;
}
}
else
{
return collisionSphere.Intersects(anotherObserver.GetObserved().CollisionSphere);
}
}
/// <summary>
/// Checks for collision with a object.
/// </summary>
/// <param name="anotherGameObject">Another game object.</param>
/// <param name="elapsedGameTime">The elapsed game time.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
public override bool CheckForCollisionWith(IGameObjectObserver anotherGameObject, TimeSpan elapsedGameTime)
{
return collisionSphere.Intersects(anotherGameObject.GetObserved().CollisionSphere);
}
/// <summary>
/// Checks for collision with a object.
/// </summary>
/// <param name="anotherObserver">Another observer.</param>
/// <param name="elapsedGameTime">The elapsed game time.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
public override bool CheckForCollisionWith(IGameObjectObserver anotherObserver, TimeSpan elapsedGameTime)
{
GAME_OBJECT_TYPE anotherObjectType = anotherObserver.GetObserved().ObjectType;
if (anotherObjectType != GAME_OBJECT_TYPE.FRIENDLY_LASER &&
anotherObjectType != GAME_OBJECT_TYPE.POWER_UP &&
anotherObjectType != GAME_OBJECT_TYPE.PLAYER)
{
if (collisionSphere.Intersects(anotherObserver.GetObserved().CollisionSphere)) return true;
}
return false;
}
