void move()
{
if (translate)
{
transform.Translate(transform.right * Time.deltaTime * boidSpeed, Space.World);
}
// the direction the boid is currently travelling in
Vector2 path = transform.right;
Collider2D[] colliders = Physics2D.OverlapCircleAll(transform.position, 0.2f);
Collider2D[] nearby = Physics2D.OverlapCircleAll(transform.position, 1.0f);
if (colliders.Length == 0)
{
return;
}
Vector3 newHeading = transform.right;
if (boidManager.separation)
{
newHeading += separation(nearby);
}
if (boidManager.alignment)
{
newHeading += alignment(colliders);
}
else
{
if (cluster != null)
{
cluster = null;
}
}
if (boidManager.cohesion)
{
newHeading += cohesion();
}
Vector3 dir = newHeading / newHeading.magnitude;
dir.z = 0;
dir.Normalize();
if (boidManager.travelDirection)
{
Debug.DrawRay(transform.position, dir, Color.white);
}
transform.right = dir;
if (boidManager.wrap)
{
wrapScreen();
}
}
public void merge(BoidCluster b)
{
if (boids.Count + b.boids.Count > parentBoid.boidManager.maximumClusterSize)
{
return;
}
float weight = b.size() / (size() + b.size());
Vector3 newDirection = Vector3.Lerp(clusterDirection, b.clusterDirection, weight);
int old = boids.Count;
boids = boids.Union(b.boids).ToList <Boid>();
clusterDirection = newDirection;
foreach (Boid boid in b.boids)
{
boid.cluster = this;
}
}
Vector3 alignment(Collider2D[] colliders)
{
Vector3 vectorToAdd = Vector3.zero;
foreach (Collider2D collider in colliders)
{
if (collider.gameObject != gameObject && canCreateCluster)
{
Boid b = collider.gameObject.GetComponent <Boid>();
if (b.cluster == null && cluster == null)
{
BoidCluster cluster = new BoidCluster();
cluster.add(GetComponent <Boid>());
cluster.add(b);
}
else if (cluster == null && !b.cluster.contains(GetComponent <Boid>()))
{
b.cluster.add(GetComponent <Boid>());
}
else if (b.cluster == null && !cluster.contains(b))
{
cluster.add(b);
}
else if (b.cluster != cluster)
{
if (cluster.size() >= b.cluster.size())
{
cluster.add(b);
}
else
{
b.cluster.add(GetComponent <Boid>());
}
}
}
}
if (cluster != null)
{
clusterDirection = cluster.clusterDirection;
Vector3 rotate = Vector3.RotateTowards(transform.right, clusterDirection, 10.0f * Time.deltaTime, 0.0f);
rotate.Normalize();
vectorToAdd += rotate;
}
return(vectorToAdd);
}
