public void AssessAsteroid(Asteroid other)
{
var angle = CalculateAngle(other);
if (VisibleAngles.ContainsKey(angle))
{
VisibleAngles[angle].Add(other);
}
else
{
VisibleAngles[angle] = new List <Asteroid>()
{
other
};
}
}
public (double, Asteroid) FireLaser()
{
// laser starts at 0 degrees with no hits
// laser must increase its angle, then fire at the closest asteroid on the next available angle
// if there are no more asteroids to shoot, then return an appropriate error message
var asteroidCount = VisibleAngles.Values.SelectMany(a => a).ToList().Count;
if (asteroidCount == 0)
{
return(-1, null);
}
// Console.WriteLine($"{asteroidCount} asteroids remaining to choose from");
var nextAngle = VisibleAngles
.Select(angle => angle)
.Where(angle => angle.Key > LaserAngle && angle.Value.Count > 0)
.OrderBy(angle => angle.Key)
.FirstOrDefault();
if (nextAngle.Value == null || nextAngle.Value.Count == 0)
{
// in this case we have no more angles with asteroids in to destroy, start another loop around
Console.WriteLine("Starting another loop around");
LaserAngle = -0.1d;
//recurse
return(FireLaser());
}
var asteroidHit = nextAngle.Value
.Select(asteroid => asteroid)
.OrderBy(asteroid => asteroid.DistanceFrom(this))
.First();
VisibleAngles[nextAngle.Key].Remove(asteroidHit);
LaserAngle = nextAngle.Key;
return(nextAngle.Key, asteroidHit);
}
