how to make a flashlight battery system

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

public class Lightcrip : MonoBehaviour
{
public Animator anim;
public GameObject Light;
public bool LightActive;
public AudioSource clickSound;

void Start()
{
Light.SetActive(false);
anim = GetComponent<Animator>();
anim.SetBool("ison", false);
clickSound.Stop();
}


void Update()
{
if (Input.GetButtonDown("Fire2"))
{
LightActive = !LightActive;
clickSound.Play();

if (LightActive)
{
FlashLightActive();
anim.SetBool("ison", true);
}

if (!LightActive)
{
FlashLightInActive();
anim.SetBool("ison", false);
}
}
}

void FlashLightActive()
{
Light.SetActive(true);
}

void FlashLightInActive()
{
Light.SetActive(false);
}
}

thats all my code for my flashlight i want to make it so when i click lmb (Fire2) a timer starts and keeps going down until i turn my flashlight off then i want the timer to pause and if the timer runs out you cant turn on the flashlight, im pretty new to coding and i tried my best to figure it out myself and what tutorials but none really helped so can someone please help me?

 

Please read the code tags post.

You can do this by using a simple timer which will count up while the flashlight is on. Example:

Code (CSharp):

1. public class Flashlight : MonoBehaviour
2. {
3.     bool m_isOn;
4.     public GameObject light;
5.     float m_batteryTimer;
6.     public float batteryDuration;
7.  
8.     public void Flip()
9.     {
10.         if (m_isOn) TurnOff();
11.         else TurnOn();
12.     }
13.  
14.     public void TurnOn()
15.     {
16.         if (m_batteryTimer < batteryDuration)
17.         {
18.             m_isOn = true;
19.             light.SetActive(true);
20.         }
21.     }
22.  
23.     public void TurnOff()
24.     {
25.         m_isOn = false;
26.         light.SetActive(false);
27.     }
28.  
29.     void Start()
30.     {
31.         m_isOn = light.activeInHierarchy;
32.     }
33.  
34.     void Update()
35.     {
36.         if (m_isOn && m_batteryTimer < batteryDuration)
37.             m_batteryTimer += Time.deltaTime;
38.  
39.         if (Input.GetMouseButtonDown(0))
40.             Flip();
41.     }
42. }

Links you might find useful:
Time.deltaTime
GameObject.activeInHierarchy
Input.GetMouseButtonDown()