Untitled

using UnityEngine;
using System.Collections;

[ExecuteInEditMode]
public class NPC_Node : MonoBehaviour {
        void Update() {
            Camera.main.transform.LookAt(Camera.main.ScreenToWorldPoint(Input.mousePosition));
                Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
                RaycastHit hit;
                Debug.DrawRay(ray.origin, ray.direction * 1000, Color.yellow);
                if (Physics.Raycast(ray, out hit, 1000.0f)) {
                        Debug.Log("Hit " + collider.gameObject.name);
                }
        }
}