Unity 2D Parallax Layer

ParallaxLayer.cs

using UnityEngine;

public class ParallaxLayer : MonoBehaviour
{
    public Transform originalPosition;
    public Transform layerPosition;

    public float _xFator;

    public float _yFator;

    public float _xMaxOfset;

    public float _xMaxNegativeOfset;

    public float _yMaxOfset;

    public float _yMaxNegativeOfset;

    void Update()
    {
        var lCameraPosition = Camera.main.transform.position;
        var lPosition = originalPosition.position;
        var lToCamera = new Vector2(lCameraPosition.x - lPosition.x, lCameraPosition.y - lPosition.y);
        var lX = Mathf.Clamp(lToCamera.x * _xFator, _xMaxNegativeOfset, _xMaxOfset);
        var lY = Mathf.Clamp(lToCamera.y * _yFator, _yMaxNegativeOfset, _yMaxOfset);
        var lLayerPosition = layerPosition.position;
        layerPosition.position = new Vector3(lPosition.x + lX, lPosition.y + lY, lLayerPosition.z);
    }

    void OnDisable()
    {
        if (layerPosition && originalPosition)
        {
            var lPosition = originalPosition.position;
            var lLayerPosition = layerPosition.position;
            layerPosition.position = new Vector3(lPosition.x, lPosition.y, lLayerPosition.z);
        }
    }
}