public Corral(Point size, WorldObject toTrack)
{
subject = toTrack;
bounds = new BoxCollider(size);
AddComponent(bounds);
bounds.CollisionStart += TriggerEvents;
bounds.CollisionEnd += TriggerEvents;
}
private static bool CircularComponentCheck(WorldObject root, HashSet<WorldObject> log)
{
// check if the root is in the log, if it is, that means that we have a loop
if (log.Contains(root))
return false;
// otherwise add the root, and perform a recursive call on all of the components.
log.Add(root);
foreach(WorldObject wo in root.GetComponents())
{
// if any fail, then stop checking.
if (!CircularComponentCheck(wo, log))
return false;
}
// if none failed, then it checks out
return true;
}
protected virtual void OnOwnerChanged(WorldObject owner)
{
if (OwnerChanged != null)
OwnerChanged(this, new WorldObjectEventArgs(owner));
Layer = owner == null ? null : owner.Layer;
}
public void RemoveComponent(WorldObject component)
{
if (_components.Contains(component))
{
_components.Remove(component);
OnComponentRemoved(component);
}
}
public void AddComponent(WorldObject component)
{
_components.Add(component);
if (component.Owner != this)
component.Owner = this;
OnComponentAdded(component);
if (!CircularComponentCheck(RootObject))
throw new InvalidComponentsException("An invalid component configuration was detected. Make sure you do not have duplicate components or a circular arrangement of components.");
}
public static bool CircularComponentCheck(WorldObject root)
{
return CircularComponentCheck(root, new HashSet<WorldObject>());
}
public WorldObjectEventArgs(WorldObject worldObject)
{
WorldObject = worldObject;
}
public WorldObject(WorldObject owner)
{
Initialize(owner, Vector2.Zero);
}
public void Remove(WorldObject worldObject)
{
WorldObjects.Remove(worldObject);
OnWorldObjectRemoved(worldObject);
}
public void Add(WorldObject worldObject)
{
WorldObjects.Add(worldObject);
OnWorldObjectAdded(worldObject);
}
private void UnsubscribeFromManagers(WorldObject worldObject)
{
if (worldObject is ICollidable)
CollisionManager.AddCollidable(worldObject as ICollidable);
else if (worldObject is IDrawManageable)
DrawManager.Remove(worldObject as IDrawManageable);
// unsubscribe the components recursively
foreach (WorldObject wo in worldObject.GetComponents())
{
UnsubscribeFromManagers(wo);
}
}
private void SubscribeToManagers(WorldObject worldObject)
{
if (worldObject is ICollidable)
CollisionManager.AddCollidable(worldObject as ICollidable);
else if (worldObject is IDrawManageable)
DrawManager.AddDrawable(worldObject as IDrawManageable);
// subscribe components recursively
foreach (WorldObject wo in worldObject.GetComponents())
{
SubscribeToManagers(wo);
}
}
private void OnWorldObjectRemoved(WorldObject worldObject)
{
if (WorldObjectRemoved != null) WorldObjectRemoved(this, new WorldObjectEventArgs(worldObject));
// remove the worldObject from the Managers
UnsubscribeFromManagers(worldObject);
}
private void OnWorldObjectAdded(WorldObject worldObject)
{
if (WorldObjectAdded != null) WorldObjectAdded(this, new WorldObjectEventArgs(worldObject));
// set the layer
worldObject.Layer = this;
// hook up events
worldObject.UpdateOrderChanged += worldObject_UpdateOrderChanged;
// refresh the update order
SortUpdateOrder();
// add the worldObject to the Managers
SubscribeToManagers(worldObject);
}
private void Initialize(WorldObject owner = null, Vector2? position = null, params WorldObject[] components)
{
Owner = owner;
_components = new List<WorldObject>(components);
BasePosition = position ?? Vector2.Zero;
BaseScale = new Vector2(1, 1);
BaseRotation = 0;
Enabled = true;
UpdateOrder = 0;
}
private void OnComponentRemoved(WorldObject component)
{
if (ComponentRemoved != null)
ComponentRemoved(this, new WorldObjectEventArgs(component));
}
protected override void OnOwnerChanged(WorldObject owner)
{
base.OnOwnerChanged(owner);
_baseObject = RootObject;
}
public WorldObject(WorldObject owner = null, Vector2? position = null, params WorldObject[] components)
{
Initialize(owner, position ?? null, components);
}
public Body()
{
_baseObject = RootObject;
}