Collider.Raycast

Unity Engine
1

I’m having trouble using Collider.Raycast.

I’ve tried it a few different ways, but I keep getting the error: “MissingMethodException: Method not found: ‘UnityEngine.MeshCollider.Raycast’.” As a test, I copied the example script from the docs directly and tried it on a simple GameObject with a BoxCollider.

function Update () {
    var ray = Camera.main.ScreenPointToRay (Input.mousePosition);
    var hit : RaycastHit;
    if (collider.Raycast (ray, hit, 100)) {
    Debug.DrawLine (ray.origin, hit.point);
    }
}

It gave me the same MissingMethod error.

Using Physics.Raycast works fine, but I’d really like to use Collider.Raycast if possible. I only want to trace against the Collider that is casting the ray, and I’d love to skip having to build a layerMask.

Thanks,
-Dan

2

try this

var coll : Collider;

function Update () { 
    var ray = Camera.main.ScreenPointToRay (Input.mousePosition); 
    var hit : RaycastHit; 
    if (coll.Raycast(ray, hit, 100)) { 
    Debug.DrawLine (ray.origin, hit.point); 
    } 
}

I think its because it was trying to cast the ray on the collider of the object the script is on

3

Thanks, Beast.

That works, but it strikes me as odd that I have to point the collider back to itself using a public variable.

The way I’m reading the docs I would expect to be able to access the collider component directly using the built-in variable collider, or at worst do something like thisCollider = GetComponent(Collider), and then thisCollider.Raycast(…). In the example code they call collider.Raycast directly, but it doesn’t seem to work in the current version of Unity.