Method update

src/player.rs:41–46

(&mut self, delta: Duration)

        }
    }
    pub fn update(&mut self, delta: Duration) {
        for shot in self.shots.iter_mut() {
            shot.update(delta);
        }
        self.shots.retain(|shot| !shot.dead());
    }
    pub fn detect_hits(&mut self, invaders: &mut Invaders) -> u16 {
        let mut hit_something = 0u16;
        for shot in self.shots.iter_mut() {