Method random

battlecode-engine/src/map/mod.rs:452–481

Constructs a pseudorandom asteroid pattern given a map of Mars.

(seed: u16, mars_map: &PlanetMap)

    /// Constructs a pseudorandom asteroid pattern given a map of Mars.
    pub fn random(seed: u16, mars_map: &PlanetMap) -> AsteroidPattern {
        let mut pattern: FnvHashMap<Rounds, AsteroidStrike> = FnvHashMap::default();

        let karbonite_gen = Range::new(ASTEROID_KARB_MIN, ASTEROID_KARB_MAX);
        let round_gen = Range::new(0, 40);
        let x_gen = Range::new(0, mars_map.width as i32);
        let y_gen = Range::new(0, mars_map.height as i32);

        let seed: &[_] = &[seed as usize];
        let mut rng: StdRng = SeedableRng::from_seed(seed);
        let mut round = 0;
        loop {
            round += round_gen.ind_sample(&mut rng);
            if round >= ROUND_LIMIT {
                break;
            }
            pattern.insert(round, AsteroidStrike {
                karbonite: karbonite_gen.ind_sample(&mut rng),
                location: MapLocation {
                    planet: Planet::Mars,
                    x: x_gen.ind_sample(&mut rng),
                    y: y_gen.ind_sample(&mut rng),
                },
            });
        }

        AsteroidPattern {
            pattern: pattern,
        }
    }

    /// Validates the asteroid pattern.
    ///