Why this script not working?

Questions & Answers
1

I have this script:

  public float threshold;

  private bool isGrounded;

  void OnTriggerEnter(Collision other) 
{
   foreach(ContactPoint temp in other.contacts) {
    if(Vector3.Cross(temp.normal, Vector3.up) < threshold) {
        isGrounded = true;
    }
}

}

The error says that operatos of < cant be applied to Vector3 and float, how can I fix this?

What it does is check the collider bounds to see if it is grounded.

2

The left side of your if statement is a Vector3, since that is what Vector3.Cross() returns.

The error occurs because you can’t compare set of 3 floats with 1 float.

Vector that is returned there is also normalized which means its magnitude equals 1 so no point in using someNormalizedVector.magnitude since it is a fixed value.

My first thoughts for ground checking would be raycasting or using collider.isGrounded which natively does not give usable results but I made a workaround for that, you can find the code and unitypackage working scene with separated raycast scene, char controller and both combined with explanations here. Good luck!

Radivarig

3

OnTriggerEnter has to be Collider not Collision