title: Allowing players to drag objects in Unity
body: <p>I'm currently making a game in Unity where I want the player to have the ability to drag objects troughout the screen based on the touch position. I created a script in order to do this and from what I know it doens't have any mistakes and should allow me to drag the object that the script is attatched to across the screen. However when I try to execute the code nothing happens. when touched the object remains static and doesn't move at all. I even tried to switch it the Input.GetTouch(0).position to Input.mousePosition to see that the problem lied with my phone but this doenst work either. Does anyone know how I might be able to solve this?</p>
  
  <pre><code>using UnityEngine;
  using System.Collections;
  using UnityEngine.EventSystems;
  
  public class MoveBall : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
  {
      public static GameObject WhiteBall;
      Vector3 startPosition;
  
      #region IBeginDragHandler implementation
  
      public void OnBeginDrag(PointerEventData eventData)
      {
          WhiteBall = gameObject;
          startPosition = transform.position;
      }
  
      #endregion
  
      #region IDragHandler implementation
  
      public void OnDrag(PointerEventData eventData)
      {
          transform.position = Input.GetTouch(0).position;
  
      }
  
      #endregion
  
      #region IEndDragHandler implementation
  
      public void OnEndDrag(PointerEventData eventData)
      {
          WhiteBall = null;
          transform.position = startPosition;
      }
  
      #endregion
  
  
  
  }
  </code></pre>