GameObject Panel_1;
    GameObject Panel_2;
    GameObject Panel_3;
    GameObject Panel_4;
    GameObject Panel_5;
    
    int pos_col = 0; // с каким коллайдером пересечение колайдера
    
// Use this for initialization
    void Start () {

  Panel_1 = GameObject.Find ("Panel_1");
  Panel_2 = GameObject.Find ("Panel_2");    
  Panel_3 = GameObject.Find ("Panel_3");    
  Panel_4 = GameObject.Find ("Panel_4");    
  Panel_5 = GameObject.Find ("Panel_5");    

    }

    void OnTriggerEnter2D(Collider2D col) {
  
  if (col.gameObject.GetComponent<Collider2D> ().bounds.Intersects (Panel_1.GetComponent<Collider2D> ().bounds) ) {
   transform.rotation = Quaternion.Euler (0, 0, -45f);
   pos_col = 1;
  }
  if (col.gameObject.GetComponent<Collider2D> ().bounds.Intersects (Panel_2.GetComponent<Collider2D> ().bounds) ) {
   transform.rotation = Quaternion.Euler (0, 0, 45f);
   pos_col = 2;
  }
  if (col.gameObject.GetComponent<Collider2D> ().bounds.Intersects (Panel_3.GetComponent<Collider2D> ().bounds) ) {
   transform.rotation = Quaternion.Euler (0, 0, -45f);
   pos_col = 3;
  }
  if (col.gameObject.GetComponent<Collider2D> ().bounds.Intersects (Panel_4.GetComponent<Collider2D> ().bounds) ) {
   transform.rotation = Quaternion.Euler (0, 0, 0);
   pos_col = 4;
  }
  if (col.gameObject.GetComponent<Collider2D> ().bounds.Intersects (Panel_5.GetComponent<Collider2D> ().bounds) ) {
   transform.rotation = Quaternion.Euler (0, 0, 45f);
   pos_col = 5;
  }
    }

    void Update(){
  if ((Input.GetMouseButtonUp (0)) && pos_col == 1) {
   gameObject.transform.position = Panel_1.transform.position;
  }
  if ((Input.GetMouseButtonUp (0)) && pos_col == 2) {
   gameObject.transform.position = Panel_2.transform.position;
  }
  if ((Input.GetMouseButtonUp (0)) && pos_col == 3) {
   gameObject.transform.position = Panel_3.transform.position;
  }
  if ((Input.GetMouseButtonUp (0)) && pos_col == 4) {
   gameObject.transform.position = Panel_4.transform.position;
  }
  if ((Input.GetMouseButtonUp (0)) && pos_col == 5) {
   gameObject.transform.position = Panel_5.transform.position;
  }
  Debug.Log (pos_col);
    }

    void OnMouseDrag() {
  gameObject.transform.SetAsLastSibling ();// не помню что за хня, но она нужна.
  Vector2 p = Camera.main.ScreenToWorldPoint(new Vector2(Input.mousePosition.x, Input.mousePosition.y));
  gameObject.transform.position = p;
    }