Fixed. It had to do with calling QueryNode and Leaf with a this
pointer instead of the passed in node
values.
//Call
query_area = new a2de::Rectangle(_mouse->GetX(), _mouse->GetY(), 100.0, 100.0, a2de::YELLOW, false);
_selected_elements = _qt->Query(*query_area);
//...
//Definitions
template<typename T>
std::vector<T> QuadTree<T>::Query(const a2de::Shape& area) {
std::vector<T> selected_elements;
QueryNode(this, area, selected_elements);
return selected_elements;
}
template<typename T>
void QuadTree<T>::QueryNode(QuadTree<T>* node, const a2de::Shape& area, std::vector<T>& selected_elements) {
if(node == nullptr) return;
if(node->_bounds.Intersects(area) == false) return;
if(IsLeaf(node)) {
for(std::vector<T>::iterator _iter = node->_elements.begin(); _iter != node->_elements.end(); ++_iter) {
selected_elements.push_back(*_iter);
}
return;
}
for(std::size_t i = 0; i < MAX_CHILDREN; ++i) {
QueryNode(node->_children[i], area, selected_elements);
}
}