Impossible error

Questions & Answers
1

On rare circumstances, when my controller hits a jumping target I’m getting an

IndexOutOfRangeException: Array index is out of range.

error on the following code

private void OnCollisionStay(Collision collision)
{
    var contacts = collision.contacts;
    _contactNormal = contacts[0].normal; // this line
}

and I don’t really see how this is possible.

If OnCollisionStay is called, then I assume there should always be collision, therefore I have to be in contact with something.

Obviously I can fixed this by checking for the value, but really want to know if this is just a bug or is there chance under certain circumstances that this could occur.

Cheers

2

Contact and collision are different slightly i think the mesh many be smaller than the collider (which is not a mesh)

i think contact only occur if the mesh gets toched but i am not sure!

3

Use This:

void OnCollisionEnter(Collision collision) 
{
  ContactPoint contact = collision.contacts[0];
  _NormalContact=contact.normal;

}