Method reached_bottom

src/invaders.rs:82–84

(&self)

        self.army.is_empty()
    }
    pub fn reached_bottom(&self) -> bool {
        self.army.iter().any(|invader| invader.y >= NUM_ROWS - 1)
    }
    pub fn kill_invader_at(&mut self, x: usize, y: usize) -> u16 {
        if let Some(idx) = self
            .army