using UnityEngine;
public sealed class CollisionProbe : MonoBehaviour
{
    [SerializeField] private LayerMask interestingLayers = ~0;
    private void OnCollisionEnter(Collision collision)
    {
        bool selected = (interestingLayers.value & (1 << collision.gameObject.layer)) != 0;
        Debug.Log("Contact: " + collision.gameObject.name + ", selected=" + selected, this);
    }
}