void Start()
{
componentes = new List <Fish3D>(numFishes);
//we generate the lookup directions for the collision checks once
if (collCheckDir == null)
{
collCheckDir = new List <Vector3>(numDirections);
for (int i = 0; i < numDirections; i++)
{
float phi = Mathf.Acos(1.0f - 2.0f * (float)i / numDirections);
float theta = Mathf.PI * (1 + Mathf.Sqrt(5)) * i;
collCheckDir.Add(new Vector3(Mathf.Cos(theta) * Mathf.Sin(phi), Mathf.Sin(theta) * Mathf.Sin(phi), Mathf.Cos(phi)));
}
}
//we generate the fishes
for (int i = 0; i < numFishes; i++)
{
GameObject fish = Instantiate(fishPrefab, transform);
Fish3D fishComp = fish.GetComponent <Fish3D>();
fishComp.id = componentes.Count;
fishComp.settings = settings;
fishComp.Init(collCheckDir, spawnSize);
componentes.Add(fishComp);
}
}
void CalculateFishData(Fish3D aFish)
{
//RESET
aFish.flockCenter = Vector3.zero;
aFish.flockDirection = Vector3.zero;
aFish.avoidanceDirection = Vector3.zero;
aFish.numFlockMates = 0;
foreach (Fish3D otherFish in componentes)
{
if (aFish.id != otherFish.id)
{
//position checking
Vector3 otherFishPos = otherFish.transform.position;
Vector3 diference = aFish.transform.position - otherFishPos;
float distance = diference.magnitude;
//data calculation
if (distance < settings.sightRadius)
{
aFish.flockCenter += -otherFishPos;
aFish.flockDirection += otherFish.transform.forward;
if (distance < settings.avoidRadius)
{
aFish.avoidanceDirection += diference / distance;
}
aFish.numFlockMates++;
#if UNITY_EDITOR
if (aFish.drawGizmo)
{
Debug.DrawLine(aFish.transform.position, otherFishPos);
}
#endif
}
}
}
}
