player move while mouse move.

I would like to move player while the mouse move on X axis my code as follow: public class move : MonoBehaviour { public Camera cam; private Rigidbody2D ping;

 // Use this for initialization
 void Start()
 {
     ping = gameObject.GetComponent<Rigidbody2D>();
     if (cam == null)
         cam = Camera.main;


 }

 // Update is called once per frame
 void Update()
 {
     Vector3 iniPos = cam.ScreenToWorldPoint(Input.mousePosition);
     Vector3 targetPos = new Vector3(iniPos.x,0f,0f);
     ping.MovePosition(targetPos);

 }

}