why does the cooldown on my gun not work? - unity3d

Question

I have this gun that's supposed to have a cooldown after every shot by using time between shots += Time.deltaTime. The problem is that it's like timeBeetweenShots dosen't increase. Here's the part of my code that I think matters:
private void Update()
{
timeSinceLastShot += Time.deltaTime;
}
public bool CanShoot() => !gunData.reloading && timeSinceLastShot > 1 / (gunData.fireRate / 60);
public void Shoot()
{
if (gunData.currentAmmo > 0)
{
if (CanShoot())
{
Debug.Log("shooting");
gunData.currentAmmo--;
timeSinceLastShot = 0;
OnGunShot();
}
} else
{
StartCoroutine(Reload());
}
}
what did I do wrong?

Answer 1

I think we might need to use Time.time.
The doc link is just perfect for gun fire interval.
However I had edit your code.
using System.Collections;
using UnityEngine;
public class Gun : MonoBehaviour
{
GunData gunData; // gundata might be access from player
float timeSinceLastShot = 0;
private void Update()
{
}
public bool CanShoot() => !gunData.reloading && (timeSinceLastShot + gunData.fireRate) < Time.time;
public void Shoot()
{
if (gunData.currentAmmo > 0)
{
if (CanShoot())
{
Debug.Log("shooting");
gunData.currentAmmo--;
timeSinceLastShot = Time.time;// save the last time that shot
OnGunShot();
}
}
else
{
StartCoroutine(Reload());
}
}
public void OnGunShot()
{ // animation might be here
}
IEnumerator Reload()
{ // relaoding might be here
yield return new WaitForEndOfFrame();
}
}
public class GunData // just dummy data
{
public int currentAmmo = 10;
public float fireRate = 0.2f;
public bool reloading = false;
}