// Update is called once per frame
void Update()
{
if (isInit)
{
for (int j = sphereColliders.Count - 1; j >= 0; --j)
{
for (int k = j - 1; k >= 0; --k)
{
NSphereCollider a = sphereColliders[j], b = sphereColliders[k];
if (!toDelete.Contains(a) && !toDelete.Contains(b))
{
if (a.CheckCollision(b))
{
if (a.particle.mass > b.particle.mass)
{
toDelete.Add(b);
}
else
{
toDelete.Add(a);
}
RespondToCollision(a, b);
}
}
}
}
foreach (NSphereCollider col in toDelete)
{
Destroy(col.gameObject);
}
toDelete.Clear();
}
}
private void RespondToCollision(NSphereCollider a, NSphereCollider b)
{
float aMass = a.particle.mass, bMass = b.particle.mass;
Vector3 aVel = a.particle.velocity, bVel = b.particle.velocity;
a.particle.velocity = (aMass * aVel + bMass * bVel) / (aMass + bMass);
}
public bool CheckCollision(NSphereCollider other)
{
Vector3 difference = particle.position - other.particle.position;
float sumRadii = radius + other.radius;
float distanceSq = Vector3.Dot(difference, difference);
return(distanceSq <= sumRadii * sumRadii);
}
public void RemoveItem(NSphereCollider col)
{
sphereColliders.Remove(col);
}