Method HandleScrollSelect

Source/Editors/map_editor.cpp:1914–1997

}

bool MapEditor::HandleScrollSelect(const vec3& start, const vec3& end) {
    bool something_happened = false;

    // Check scroll direction
    int scrolled = 0;
    if (Input::Instance()->getMouse().wheel_delta_y_ < 0) {
        scrolled = -1;
    } else if (Input::Instance()->getMouse().wheel_delta_y_ > 0) {
        scrolled = 1;
    }
    if (scrolled == 0) {
        return false;
    }

    // Get sorted list of collisions with mouse ray
    std::vector<Collision> collisions;
    GetEditorLineCollisions(scenegraph_, start, end, collisions, type_enable_);
    if (collisions.empty()) {
        return false;
    }
    std::sort(collisions.begin(), collisions.end(), CollisionCompare(start));

    for (int i = 0; i < (int)collisions.size();) {
        if (collisions[i].hit_what->GetType() == _group || collisions[i].hit_what->GetType() == _prefab) {
            collisions.erase(collisions.begin() + i);
        } else if (collisions[i].hit_what->parent &&
                   (collisions[i].hit_what->parent->GetType() == _group ||
                    collisions[i].hit_what->parent->GetType() == _prefab)) {
            int depth = 1;
            while (collisions[i].hit_what->parent &&
                   (collisions[i].hit_what->parent->GetType() == _group ||
                    collisions[i].hit_what->parent->GetType() == _prefab)

            ) {
                bool is_duplicate = false;
                for (int j = 0; j < i; ++j) {  // Don't allow same group to be in list twice
                    if (collisions[i].hit_what->parent == collisions[j].hit_what) {
                        is_duplicate = true;
                        break;
                    }
                }
                if (!is_duplicate) {
                    ++depth;
                    collisions.insert(collisions.begin() + i, collisions[i]);
                    collisions[i].hit_what = collisions[i].hit_what->parent;
                } else {
                    break;
                }
            }
            i += depth;
        } else {
            ++i;
        }
    }

    // Get selected item in collision list
    int selected_item = -1;
    for (int i = 0, len = (int)collisions.size(); i < len; ++i) {