using UnityEngine;
using System.Collections;

public class DeviceOperator : MonoBehaviour {
  public float radius = 1.5f;           

  void Update() {
    if (Input.GetButtonDown("Fire3")) {  
      Collider[] hitColliders =
            Physics.OverlapSphere(transform.position, radius);   
      foreach (Collider hitCollider in hitColliders) {
        hitCollider.SendMessage("Operate",
            SendMessageOptions.DontRequireReceiver); 
      }
    }
  }
}
