bool ComponentManager<T>::RemoveInstance(Instance i)
{
bool result = false;
// Keep data array tightly packed by swapping last element
// with element we want to remove and reducing the number
// of active instances.
const int index = i.index;
const unsigned int lastIndex = GetNumInstances() - 1;
// Make sure we are trying to delete a valid instance
if (index < GetNumInstances() && index >= 0)
{
// Get the entity at the index to destroy
Entity entityToDestroy = m_data.entity[index];
// Get the entity at the end of the array
Entity lastEntity = m_data.entity[lastIndex];
// Update the references of the deleted component
OnAddressChange(index, -1);
// Update the references of the moved component
OnAddressChange(lastIndex, index);
// Move last entity's data
m_data.entity[index] = m_data.entity[lastIndex];
m_data.component[index] = m_data.component[lastIndex];
// Update map entry for the swapped entity
m_map[lastEntity.id] = index;
// Remove the map entry for the destroyed entity
m_map.erase(entityToDestroy.id);
// Destroy component at end of array
m_data.entity.pop_back();
m_data.component.pop_back();
result = true;
}
return result;
}
void SkpModel::print_all_counts(){
std::cout << "Definitions: " << GetNumDefinitions() << "\n";
std::cout << "Instances: " << GetNumInstances() << "\n";
std::cout << "Groups: " << GetNumGroups() << "\n";
std::cout << "Faces: " << GetNumFaces() << "\n";
std::cout << "Images: " << GetNumImages() << "\n";
std::cout << "Edges: " << GetNumEdges() << "\n";
std::cout << "Guides: " << GetNumGuides() << "\n";
std::cout << "Curves: " << GetNumCurves() << "\n";
}
Entity ComponentManager<T>::GetEntityForInstance(Instance i) const
{
Entity e;
const int index = i.index;
if (index < GetNumInstances() && index >= 0)
{
e = m_data.entity[index];
}
return e;
}
/// \brief
/// Removes all instances
inline void RemoveAllInstances() { int n=GetNumInstances(); for(int i=0; i<n; ++i) delete m_instances[i]; m_instances.RemoveAll(); }
/// \brief
/// Creates a new instance and returns a reference to it (same as implicitly adding a new instance)
///
/// \param i
/// Instantiable object to create instance for
///
/// \return
/// Reference to newly added instance
inline VGInstance& CreateInstance(const VGInstantiable& i) { m_instances.Add(new VGInstance(i)); return GetInstance(GetNumInstances()-1); }
void CSysClass::Dump(FILE* stream)
{
fprintf(stream, "%03d %c %-20s instances: %d\n", m_ID, m_Persistent?'p':' ', m_Name.c_str(), GetNumInstances());
}
