Drone Script

public class DroneController : MonoBehaviour {
    bool moving;
    public float speed;
    // Use this for initialization
    //GameObject obj;
    GameObject ast;
    void Start () {
        moving = false;
        speed = 50f;
    }

    // Update is called once per frame
    void Update () {

        if (moving) {
            Debug.Log ("Moving;");
            Debug.Log (ast.transform.position);
            float step = speed * Time.deltaTime;
            transform.position = Vector2.MoveTowards (transform.position, ast.transform.position, step);
        }
    }

    void harvest(GameObject obj) {
        Debug.Log ("Message Recieved");
        ast = obj as GameObject;
        moving = true;
        Debug.Log (ast.transform.position);
    }
}