Vector3 flockForces()
{
Vector3 sep = Vector3.zero;
Vector3 ali = Vector3.zero;
Vector3 coh = Vector3.zero;
int visCount = 0;
int sepCount = 0;
for (int i = 0; i < fc.flockSize(); i++)
{
Flock boid = fc.getBoid(i);
if (boid && boid != this)
{
float dist = Vector3.Distance(transform.position, boid.transform.position);
if (dist < SEP_DIST) //The separation force does not take into account view angle
{
sep += (transform.position - boid.transform.position) / Mathf.Pow(dist, 2f); //Force becomes exponentially larger as we get closer to the other Flock
sepCount++;
}
if (canSee(boid))
{
ali += boid.velocity; //Point us to the average velocity
coh += boid.transform.position; //Find the average position
visCount++;
}
}
}
if (sepCount != 0) //Avoid division by zero when we are alone
{
sep /= sepCount;
}
if (visCount != 0) //The count given by the separation check may be different than this check
{
coh /= visCount;
coh = coh - transform.position; //Now we have the average position, but we need to convert it to a relative vector
ali /= visCount;
}
return(sep * 3f + ali * .8f + coh * .5f); //Return the sum of our inter-bird forces, weighted
}
private Vector3 hunt() //Hunt down the prey
{
Vector3 force = Vector3.zero;
for (int i = 0; i < fc.flockSize(); i++)
{
if (fc.getBoid(i))
{
Vector3 delta = fc.getBoid(i).transform.position - transform.position;
float dist = Vector3.Distance(fc.getBoid(i).transform.position, transform.position);
float B = 160f;
float m = 2f;
float magnitude = (B / Mathf.Pow(dist, m));
if (printInfo)
{
Debug.DrawRay(transform.position, delta.normalized * magnitude);
}
force += delta.normalized * magnitude;
}
}
return(force);
}
