const ComponentPtr& ComponentCollection::GetComponent(i32 slotID) const
{
static const ComponentPtr kNull;
const M_Component::const_iterator end = m_Components.end();
M_Component::const_iterator found = m_Components.find( slotID );
if ( found != end )
{
return found->second;
}
else
{
// Travel up the inheritance hierarchy looking for a base class slot within
// this collection.
Reflect::Registry* registry = Reflect::Registry::GetInstance();
const Reflect::Class* type = registry->GetClass( slotID );
type = registry->GetInstance()->GetClass( type->m_Base );
// While we have base class type information, and we haven't hit the Component
// base class, keep iterating.
while ( type && ( type->m_TypeID != Reflect::GetType< ComponentBase >() ) )
{
// See if the base class has a slot in this collection.
found = m_Components.find( type->m_TypeID );
if ( found != end )
{
return found->second;
}
type = registry->GetInstance()->GetClass( type->m_Base );
}
}
return kNull;
}
