struct Background {
    texture: Texture,
    pos_y: f64,
    down: bool,
}

impl Background {

    fn move_background(&mut self){
        if self.down{
            self.pos_y-=1.5;
            if self.pos_y < -1100.0 {
                self.pos_y = 0.0;
            }
        }
    }

}