public bool AttachToComponent(CSceneComponent parentComponent, bool bTransferOwnership = false)
{
if (parentComponent == this)
{
LogUtility.Log("[Components] Tried to attach to self, aborting");
return(false);
}
if (parentComponent == null)
{
Detach();
return(false);
}
if (parentComponent == m_parentComponent)
{
LogUtility.Log("[Components] Tried attaching component to the same parent again, aborting");
return(false);
}
if (parentComponent.IsChildOf(this))
{
LogUtility.Log("[Components] Tried to attach to a component which is already a child, this would create a loop, aborting");
return(false);
}
Detach();
CSceneComponent oldParent = m_parentComponent;
m_parentComponent = parentComponent;
m_transform.Parent = m_parentComponent.m_transform;
m_parentComponent.m_children.Add(this);
// todo henning handle different transform modes (Keep WorldTransform, Snap To etc.)
if (m_parentComponent.Owner != Owner)
{
if (bTransferOwnership)
{
ChangeOwner(m_parentComponent.Owner);
}
else
{
CEntity currentParent = Owner.Parent;
if (currentParent != null)
{
currentParent.UnregisterChildEntity(Owner);
}
parentComponent.Owner.RegisterChildEntity(Owner);
World.TriggerHierarchyChanged(this, oldParent, parentComponent);
}
}
return(true);
}
public bool IsChildOf(CSceneComponent parentComponent)
{
CSceneComponent parent = m_parentComponent;
while (parent != null)
{
if (parent == parentComponent)
{
return(true);
}
parent = parent.m_parentComponent;
}
return(false);
}