void Control::BallCollision() // столкновение
{
    QList<QGraphicsItem *> list = collidingItems();
    for(int i=0;i<list.count();i++)
    {
        if(list.at(i)->type() == 4)// с шаром
        {
            int Num = list.at(i)->data(1).toInt();
            SetVectorToBuffer(pos().x(),pos().y(),AllObjects[Num]->dx,AllObjects[Num]->dy);
            Changed = true;
        }
        else
        {
            if(list.at(i)->type() == 3)// со стеной
            {
                int Num = list.at(i)->data(1).toInt();
                if(Num==0)
                {
                    qreal Y_k = pos().y();
                    qreal X_k = pos().x();
                    SetVector(X_k,Y_k,X_k+dx,Y_k-dy);
                }
                //if(Num==1)
                else
                {
                    qreal X_k = pos().x();
                    qreal Y_k = pos().y();
                    SetVector(X_k,Y_k,X_k-dx,Y_k+dy);
                }
            }
        }
    }
}