How to check if raycast hits a certain object?

Questions & Answers
1

I want to open an UI element when raycast hits a certain object. I’ve gotten to a point where it works if the raycast hits any object, but not from a certain object. I’ve tried it with tags, but couldn’t get it to work either.

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

public class OnClickDestroy : MonoBehaviour
{
    public GameObject Trader;

    public void Update()
    {
        if (Input.GetKeyDown(KeyCode.F))
        {
            Vector3 fwd = transform.TransformDirection(Vector3.forward);

            if (Physics.Raycast(transform.position, fwd, 2))
            {
                //Here it stops working, this line doesn't do anything
                if (gameObject == Trader)
                {
                    Destroy(Trader);
                }
            }
        }

        
    }

}
2

Physics.Raycast is just a simple boolean value, and hence doesn’t return any info on what it has hit, you should be looking for Physics.RaycastHit, more precisely the collider property, which you can use to get the gameObject it hit

3

Made it work with this
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class OnClickDestroy : MonoBehaviour
{

    public GameObject Trader;
    public void Update()
    {
        if (Input.GetKeyDown(KeyCode.F))
        {
            var ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit hit;
            if (Physics.Raycast(ray, out hit))
            {
                if (hit.collider.tag == "Trader")
                {
                    Destroy(Trader);
                }

            }

        }

        
    }

}