timer

hey guys so i have made a fps game and i have a flashlight on one of the weapons. what id like to do is make a timer so that when you turn the flashlight on with (Shift + 2) it has 15 minutes before it turns off... also i would like to know how to keep it at the current time it would be at incase i turn it off with with (Shift + 2).

 

You could maybe https://docs.unity3d.com/ScriptReference/WaitForSeconds.html

or you could keep a track of https://docs.unity3d.com/ScriptReference/Time-time.html and update it as you see fit.

Personally I would go with WaitForSeconds().

 

I'd go with a 'charge' counter that you decrease during update by subtracting Time.deltaTime when the light is turned on. When it reaches Zero (or is <0), the Charge is depleted, and the light turns off. I find this helpful because

• it's near trivial to implement
• automatically works with pausing the game and 'bullet time' (or all other effects that affect Time.timeScale)
• you can simulate finding battereies that aren't fully charged
• using the Charge amount you can modify the lifgh's intensity and color, simulating how Charge runs down and the light grows darker.

 

Code (CSharp):

1.  
2. float timer = 0f;
3. public float timerInterval = 900f; // 15 * 60 = 900 seconds
4. bool isFlashlightOn = false;
5.  
6. void Start()
7. {
8.  
9.    timer = timerInterval; // reset flashlight to 15 mins charge
10. }
11. void Update()
12. {
13.    if(isFlashlightOn && timer > 0)
14.    {
15.        timer -= Time.deltaTime;
16.       if(timer <= 0f)
17.       {
18.          isFlashlightOn = false;
19.          // turn off flashlight here as you ran out of charge
20.        }
21.    }
22.    else
23.    {
24.           isFlashlightOn = false;
25.          // turn off flashlight here as you ran out of charge
26.    }
27. }

Something like that, note that was written freehand without an IDE so may contain some issues but should get you on right path.

 

If you do it from a coroutine the gameobject will only take resources when the flashlight is on / recharging. One game object with a update is not a problem though.