Move2.cs

using UnityEngine;
using System.Collections;
public class move2 : MonoBehaviour {
	public  float xx;
	public  float yy;
	//public bool destroyy=false;
	public GameObject shap;
	float x,y;
	// Use this for initialization
	void Start () {
		
	}
	
	// Update is called once per frame
	void Update () {
		
	}
	bool dragStarted = false;
	void OnMouseDrag ()
	{
		x = Input.mousePosition.x;
		y = Input.mousePosition.y;
		if (!dragStarted) {
			dragStarted = true;
			xx = x;
			yy = y;
		}
		Vector2 pos = Camera.main.ScreenToWorldPoint (new Vector2 (x, y)); 
		transform.position = new Vector3 (pos.x, pos.y, transform.position.z);
	}
	void OnTriggerStay2D(Collider2D other) 
	{
		//test the shap 
		if (shap.collider2D == other) {
						Debug.Log ("trigger");
		
			Destroy(gameObject, 1f);
				}
		else
		
			Debug.Log("no trigger");
	}
}