def METHOD_NAME(self, x: int, y: int, dx: int, dy: int, buttons: int, modifiers: int):
    """Make it possible scroll the scene around by dragging the mouse"""
    self.skyline1.center_x += dx
    self.skyline1.center_y += dy
    self.skyline2.center_x += dx
    self.skyline2.center_y += dy