Directional Planar Overhead Shadow C# Code

using UnityEngine;

[ExecuteInEditMode]
public class CharacterShadowProjection : MonoBehaviour
{
    public GameObject plane;
    public Light useLight;

    void Update ()
    {
        if (null != plane)
        {
            renderer.sharedMaterial.SetMatrix("_WorldToReceiver", plane.renderer.worldToLocalMatrix);
            renderer.sharedMaterial.SetVector("_LightDirection", useLight.transform.forward);
        }
    }
}