private (double xVel, double yVel) Avoid(Boid boid, double distance, double power)
{
// point away as boids get close
var neighbors = Boids.Where(x => x.GetDistance(boid) < distance);
(double sumClosenessX, double sumClosenessY) = (0, 0);
foreach (var neighbor in neighbors)
{
double closeness = distance - boid.GetDistance(neighbor);
sumClosenessX += (boid.X - neighbor.X) * closeness;
sumClosenessY += (boid.Y - neighbor.Y) * closeness;
}
return(sumClosenessX * power, sumClosenessY *power);
}
private (double xVel, double yVel) Predator(Boid boid, double distance, double power)
{
// point away as predators get close
(double sumClosenessX, double sumClosenessY) = (0, 0);
for (int i = 0; i < PredatorCount; i++)
{
Boid predator = Boids[i];
double distanceAway = boid.GetDistance(predator);
if (distanceAway < distance)
{
double closeness = distance - distanceAway;
sumClosenessX += (boid.X - predator.X) * closeness;
sumClosenessY += (boid.Y - predator.Y) * closeness;
}
}
return(sumClosenessX * power, sumClosenessY *power);
}