using UnityEngine;
using System.Collections;

public class Joystick : MonoBehaviour {

  public float speed = 0.1f;

  void Update(){
   if(Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Moved){
    Vector2 touchDeltaPosition = Input.GetTouch(0).deltaPosition;
    transform.Translate(touchDeltaPosition.x * speed * Time.deltaTime, touchDeltaPosition.y * speed * Time.deltaTime, 0);
   }
   if(Input.touchCount <= 0){
    transform.position = new Vector2(0, 0);
   }
  }
}