Port of UVScroller.js to C# - Unity3D

UVScroller.cs

/************************************************************************
** UVScrollerEx.cs
**
** Ported from UVScroller.js
*************************************************************************/

using UnityEngine;

[ExecuteInEditMode]
public class UVScroller : MonoBehaviour
{
    public float ScrollSpeed = 1.0f;
    public float MainOffsetX = 0.0f;
    public float MainOffsetY = 0.0f;

    public Texture UseCustomTex = null;
    public string CustomTexName = "";

    private Renderer _renderer;
    private Vector2 _offs;
    
    public void Start()
    {
        _renderer = GetComponent<Renderer>();
        _offs = new Vector2( 0, 0 );
    }

    public void Update()
    {
        float offset = Time.time * ScrollSpeed;
        _offs.x = MainOffsetX * offset;
        _offs.y = MainOffsetY * offset;

        _renderer.sharedMaterial.SetTextureOffset( UseCustomTex ? CustomTexName : "_MainTex", _offs );
    }
}