Coding Begginer need help including- input.getbutton("Fire1")

I am a newbie with no coding experience just started using unity I was following brackeys Ray cast shooting video,

, and I created the gun script but I wanted to turn it into mobile so I wanted to autofire by holding a UI button.
plz, I need help me know no code.
this is my code.
i was thinking is there a way to put something in place of input.getbutton to make a button which will autofire on holding.
Thanks&sorry if this is a silly question

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using Unity.VisualScripting;
5.  
6. public class Gun : MonoBehaviour
7. {
8.  
9.     public float damage = 10f;
10.     public float range = 100f;
11.     public float fireRate = 15f;
12.     public float impactForce = 30f;
13.    
14.  
15.     public Camera fpsCam;
16.     public ParticleSystem muzzleFlash;
17.     public GameObject impactEffect;
18.  
19.     private float nextTimeToFire = 0f;
20.  
21.  
22.  
23.     // Update is called once per frame
24.     public void Update()
25.     {
26.         if (Input.GetButton("Fire1") && Time.time >= nextTimeToFire)
27.         {
28.             nextTimeToFire = Time.time + 1f / fireRate;
29.             Shoot();
30.         }
31.  
32.     }
33.  
34.     public void Shoot()
35.     {
36.         muzzleFlash.Play();
37.  
38.         RaycastHit hit;
39.         if (Physics.Raycast(fpsCam.transform.position, fpsCam.transform.forward, out hit, range))
40.         {
41.            
42.  
43.             Enemy enemy = hit.transform.GetComponent<Enemy>();
44.             if (enemy != null)
45.             {
46.                 enemy.TakeDamage(damage);
47.             }
48.  
49.             if (hit.rigidbody != null)
50.             {
51.                 hit.rigidbody.AddForce(-hit.normal * impactForce);
52.             }
53.  
54.             GameObject impactGO = Instantiate(impactEffect, hit.point, Quaternion.LookRotation(hit.normal));
55.             Destroy(impactGO, 2f);    
56.         }
57.     }
58. }
59.  

 

sorry if I reply late cuz I am Indian it is now 1:00 a.m. at night

 

Make a UI button, and on the OnClick event assign your gun script and call shoot

 

I did that but then i have to click it every time it is not autofirring

 

You should use IPointerClickHandler and IPointerUpHandler interfaces, to assign a bool to check if the button is pressed or not.

 

But ipointer is for non ui game objects

 

No, is for both.
The unique requirment is that the gameObject needs a graphics raycaster, which UI elements have by default

 

Can u show me how to implement it in the code I am not able to find tutorial on it

 

Here