/// <summary>
/// Confirm that this object is a neighbor and is still active in the game.
/// </summary>
/// <param name="gameObject">Object to check</param>
/// <returns>Whether or not this object is a neighbor.</returns>
public bool ValidateAsNeighbor(GameObject gameObject)
{
if (Game.Components.Contains(gameObject))
{
if (NeighborBoundary.Intersects(gameObject.Boundary))
{
if (!NeighboringObjects.Contains(gameObject))
{
NeighboringObjects.Add(gameObject);
}
return(true);
}
else
{
if (NeighboringObjects.Contains(gameObject))
{
NeighboringObjects.Remove(gameObject);
}
}
}
else
{
if (NeighboringObjects.Contains(gameObject))
{
NeighboringObjects.Remove(gameObject);
}
if (gameObject == Anchor)
{
Anchor = null;
}
}
return(false);
}
/// <summary>
/// Method called when player has landed on another game object.
/// </summary>
/// <param name="sender">Game object collided with.</param>
/// <param name="args">Collision event arguments.</param>
private void Landed(GameObject sender, CollisionEventArgs args)
{
if (sender.GetType() == typeof(Monster))
{
var monster = sender as Monster;
NeighboringObjects.Remove(monster);
monster.IsDead = true;
ApplyForce(0, -10);
}
}
/// <summary>
/// Move this object on it's X-coordinate.
/// </summary>
/// <param name="value">Value for this object to move.</param>
public void MoveX(int value)
{
//Padded boundary for safe collision checks on smaller movements.
var territoryBoundary = new Rectangle((int)X, (int)Y, Boundary.Width + 2, Boundary.Height + 2);
//Determine if this movement can or cannot be made.
bool canMoveRight = true;
bool canMoveLeft = true;
//Checks if this object will be prevented by any solid game object neighbors.
foreach (var no in NeighboringObjects.ToList())
{
if (territoryBoundary.Intersects(no.Boundary))
{
var depth = RectangleExtensions.GetIntersectionDepth(territoryBoundary, no.Boundary);
if (depth.Y < -8 || depth.Y > 8)
{
if (depth.X < 0 && depth.X > -8)
{
canMoveRight = false;
OnRightCollided(no, new CollisionEventArgs()
{
Depth = depth
});
}
if (depth.X > 0 && depth.X < 8)
{
canMoveLeft = false;
OnLeftCollided(no, new CollisionEventArgs()
{
Depth = depth
});
}
}
}
}
if (value > 0 && canMoveRight)
{
X += value;
}
if (value < 0 && canMoveLeft)
{
X += value;
}
VelocityX = value;
}
/// <summary>
/// Updates neighbor collection and checks for colision.
/// </summary>
private void UpdateNeighbors()
{
foreach (var gameObject in NeighboringObjects.ToList())
{
if (ValidateAsNeighbor(gameObject))
{
var depth = RectangleExtensions.GetIntersectionDepth(Boundary, gameObject.Boundary);
var collisionArgs = new CollisionEventArgs()
{
Depth = depth
};
OnCollisionDetected(gameObject, collisionArgs);
CheckCollision(gameObject, collisionArgs);
}
}
}
