Countdown Timer

Question

I am trying to make a game where you have 3 seconds to shoot a moving alien that keeps respawning. I want it to be that when I shoot it it sets the time back to 3 seconds so I have 3 seconds to try and shoot it again and e.t.c until I dont manage to shoot it in 3 seconds and I lose. I have everything in place except the timer script that I want to countdown showing seconds and milliseconds. Could you please try to make this script countdown from a number instead of up from 0?

using UnityEngine; using UnityEngine.UI; using TMPro;

public class Timer : MonoBehaviour { public TextMeshProUGUI timerText; public bool playing; public float timer;

 void Update()
 {
     if (playing == true)
     {
         timer += Time.deltaTime;
         UpdateText(timer, timerText);
     }
 }

 void UpdateText(float t, TextMeshProUGUI text)
 {
     int seconds =- Mathf.FloorToInt(t % 60f);
     int milliseconds =- Mathf.FloorToInt((t * 100f) % 100f);
     text.text = seconds.ToString("00") + "." + milliseconds.ToString("0");
 }

}

Answer 1

Answer by Duckocide · Oct 27, 2020 at 03:08 PM

I'd use a coroutine for this. Have a property (boolean) to indicate if times up or not. Every time you want to start the 3 second timer, call the public method "StartTimer" - It will safely stop and start a new timer. In your Update method, monitor the timesUp property ... If it goes true, time is up!

 public bool timesUp = false;
 
 public void StartTimer() 
 {
     StopCoroutine(StopWatchCR());
     StartCoroutine(StopWatchCR());
 }
 
 private IEnumerator StopWatchCR()
 {
     timesUp = false;
     yield return new WaitForSeconds(3);
     timesUp = true;
 }

Add comment · Show 2 · Share

Flaymes · Oct 27, 2020 at 03:14 PM 0

Share

Its fine Duckocide I just spent the whole day trying to figure this out until i realised i dont need the whole complicated mess of milliseconds and seconds. I literally just need to say the timer is -= to time.deltatime and then put "0.00" into the .ToString() brackets.

Duckocide Flaymes · Oct 27, 2020 at 04:08 PM 0

Share

No worries. Just so you know, A coroutine is a great way to do something in parallel to the core unity lifecycle of Update(), FixedUpdate(), LateUpdate() etc... They can often improve performance as your not slowing Unity down.

Answer 2

Answer by johnburkert · Oct 27, 2020 at 05:16 PM

You can replace the mess inside of UpdateText with a call to ToString

 timerText.text = timer.ToString("F"))

https://docs.microsoft.com/en-us/dotnet/standard/base-types/standard-numeric-format-strings

Add comment · Share

Countdown Timer

2 Replies

Your answer

Follow this Question

Related Questions