std::shared_ptr i usuwanie wszystkich wystąpień wskaźnika

std::vector < std::shared_ptr < Animations >> _animations;
std::vector < std::shared_ptr < Object >> _objects;

// ...

_removeBtn->_onclick_func =[ ]() {
   
    if( !editor->_animations )
         return;
   
    int animationID = animations_manager->getAnimationsID( editor->_animations->_path );
    if( animationID >= 0 ) {
        removeAnimations( animationID );
        removeAnimationsFromObjects(); // jak to napisać?
        editor->_list_panel->loadAll();
       
       
    }
};

_animations.clear();

void removeAnimationsFromObjects( std::shared_ptr < Animations > removedAnimations )
{
    for( auto & object: _objects )
    {
        if( !object )
             continue;
       
        if( object->getAnimations() == removedAnimations )
        {
            object->_animation = nullptr;
        }
    }
}

std::vector < std::shared_ptr < Animations >> _animations;
std::vector < std::shared_ptr < Object >> _objects;

class Object {
public:
    std::weak_ptr < Animations > _animation;
   
    void setAnimation( std::shared_ptr < Animations > animation ) {
        _animation = animation;
    }
   
    std::shared_ptr < Animations > getAnimation() {
        return _animation.lock();
    }
};

void removeAnimations( int index )
{
    if( index < 0 || index >= _animations.size() )
         return;
   
    _animations.erase( _animations.begin() + index );
}

std::shared_ptr < Animations > Animator::getAnimations() {
    return _animations.lock();
}