Need help with script

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class PickUpPistol : MonoBehaviour {

public float TheDistance;
public GameObject ActionDisplay;
public GameObject ActionText;
public GameObject FakePistol;
public GameObject RealPistol;
public GameObject GuideArrow;
public GameObject ExtraCross;

void Update () {
TheDistance == PlayerCasting.DistanceFromTarget;
}

I am trying to create a pistol pickup script theres other code but I think that is unnecessary this is the console error:
Assets\Scripts\Sequences\PickUpPistol.cs(17,24): error CS0103: The name 'PlayerCasting' does not exist in the current context

 

Well.. you haven't defined PlayerCasting. What is it? Where is it in your code?

 

I'm assuming that's the script from the Jimmy Vegas coding tutorial (it looks similar) PlayerCasting is a script which was created in one of the earlier episodes which you haven't added because you probably skipped the video, go to the raycasting episode and write a PlayerCasting script!

 

Or just write your own PlayerCasting script!