move character with mouse movement

int width = 800;
int height = 600;

int x = width/2;
int y = height/2;

int main()
{
    sf::RenderWindow window(sf::VideoMode(width, height), "Generic name for a window");
    window.setFramerateLimit(60);

    sf::CircleShape circle(30.f);
    circle.setFillColor(sf::Color::Black);
    //circle.setOutlineThickness(15.f);
    //circle.setOutlineColor(sf::Color::Green);

    sf::Event event;
    while (window.isOpen())
    {
        window.clear(sf::Color::White);

        while (window.pollEvent(event))
        {
            if ((event.type == sf::Event::Closed) || (event.type == sf::Event::KeyPressed) && (event.key.code == sf::Keyboard::Escape))
                window.close();


            if(event.type == sf::Event::MouseMoved)
            {
                x = event.mouseMove.x;
                y = event.mouseMove.y;
                circle.setPosition(x, y);
            }
        }

        window.draw(circle);

        window.display();
    }

    int pause; cin >> pause; //Pause the program
    return 0;
}