private Vector3 AlignmentRule(BoidBehavior b) //calculates the alignment for boids.
{ //Boid Rule Three: Alignment
var pv = Vector3.zero; //pv variable equals a new vector3 vector
foreach (var bj in _boids) //for each bj variable in boids...
{
if (bj != b) //if the bj value does not equal b...
{
pv += bj.Velocity; //add the velocity of bj to pv
}
}
pv = pv / (_boids.Count - 1); //divid pv by the number of boids.
return((pv - b.Velocity).normalized); //return the normalized value of pv minus the velocity of b
}