Collider OnMouseEnter VS Raycast

[mdonsimoni]

Hello!
I’m trying to display a context window when hovering certain objects which have a BoxCollider.

I first tried to implement it by adding OnMousEnter in a script attached to the gameobject which also have the Collider, but it’s somehow not triggered:

internal void OnMouseEnter()
{
      Debug.Log("Entered " + StarData.ProperName);
      GameBoardManager.Instance.ShowStarInfo(StarData);
}

So instead, in the manager’s Update loop, I added a raycast

Vector3 mousePos = Input.mousePosition;
var ray = Camera.main.ScreenPointToRay(mousePos);
if (Physics.Raycast(ray, out var hit))
{
    Debug.Log(hit.collider.gameObject.name);
    if (hit.collider.gameObject.TryGetComponent(out UIStarController starController))
    {
        ShowStarInfo(starController.StarData);
    }
    else
    {
        ShowStarInfo(null);
    }
}

And it does work (ish, it’s inefficient at the moment since it’s more an equivalent to a OnHover, triggering the Show method every single update)

So,

1. How can I debug the OnMouseEnter not working?
2. Is it even worth it? I mean is the Raycast going on every update going to be much more inefficient once I have fixed the constant update?