use std::fmt::Debug;

trait Hittable: Debug {
    fn hit(&self);
}

#[derive(Debug)]
struct Sphere ;

impl Hittable for Sphere {
    fn hit(&self){}
}

#[derive(Debug)]
struct Cube ;

impl Hittable for Cube {
    fn hit(&self){}
}

fn main() {
    let mut objects: Vec<Box<Hittable>> = Vec::new();
    objects.push(Box::new(Sphere));
    objects.push(Box::new(Cube));
    println!("{:?}", &objects);
}