Creating a C# script that stops a character when it hits a wall

Questions & Answers
1

Im creating a script that has a character move towards a desk and i’d like the force to continue forcing this character towards this desk until he makes contact and then stops completely. This is what i’ve got.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class deskWalk : MonoBehaviour {
    public Transform tr;
    public Rigidbody rb;
    public float speed = 2f;
	
	// Update is called once per frame
	void Start () {
        Debug.Log("Moving Now");
        
    }
    private void FixedUpdate()
    {
        rb.AddForce(tr.forward * speed * Time.deltaTime);
    }

    void OnCollisionEnter(Collision collision)
    {
        if (collision.gameObject)
        {
            Debug.Log("Lol im stopped");
            rb.velocity = Vector3.zero;
        }
    }
}
2

using UnityEngine;
using System.Collections;
public class deskWalk : MonoBehaviour {
public Transform tr;
public Rigidbody rb;
public float speed = 2f;
public Vector3 direction;
public bool stopped;

	void Start () {
		tr = gameObject.transform;
		rb = gameObject.rigidbody;
		speed = 5;//change this
	}
	private void FixedUpdate()
	{   if (stopped) { direction = Vector3.zero;} 
		else {         direction = tr.forward * speed * Time.deltaTime;}
        rb.velocity = direction;
	}
	
	void OnCollisionEnter(Collision collision)
	{if (collision.gameObject.transform.name == "Name of your desk object") {
				stopped = true;}}
	
}
3

Here’s the working code…

public class deskWalk : MonoBehaviour {
    public Transform tr;
    public Rigidbody rb;
    public float speed = 2f;
    public Vector3 direction;
    public bool stopped;
    public Transform BankDesk;
	
	// Update is called once per frame
	void Start () {
        Debug.Log("Moving Now");
        
    }
    private void FixedUpdate()
    {
        if (stopped)
        {
            direction = Vector3.zero;
        }
        else
        {
            rb.AddForce(tr.forward * speed * Time.deltaTime);
        }
    }

    void OnCollisionEnter(Collision collision)
    {
        if (collision.gameObject.transform.name == "Cube")
        {
            Debug.Log("Lol im stopped");
            stopped = true;
        }
    }
}