CloudShadow for Unity3d

using UnityEngine;

public class CloudShadow : MonoBehaviour
{
    #region Fields
    private GameObject sun;
    private Projector cloudShadow;
    private RaycastHit hit;
    #endregion

    void Start ()
    {
        // Find your sunlight by it's name
        sun = GameObject.Find("Sunlight");
        cloudShadow = GetComponentInParent<Projector>();
    }

    void Update ()
    {
        // Cast a Raycast from the cloud to the sun's direction
        if(Physics.Raycast (transform.parent.position, sun.transform.forward, out hit))
        {
            // Height is fixed at 1000 as it fits my game - apply what you need
            transform.position = new Vector3(hit.point.x, 1000f, hit.point.z);
        }
    }
}