any way to make my script wait for some seconds?

Question

I'm making an endless runner game and I want a part of my code to wait for some seconds how can I do this? the problem is that it is deleting the terrain when the edge of the beginning of the new terrain hits the bottom of the camera view.

 void Start()
{
    StartCoroutine(Example());
}

IEnumerator Example()
{

    yield return new WaitForSeconds(5);

}
}

here is my code I want the recycle platform function to execute after a few seconds

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

public class PlatformManager : MonoBehaviour
{
[SerializeField]
private GameObject[] _platformPrefabs;
[SerializeField]
private int _zedOffset;


// Start is called before the first frame update
void Start()
{
    for (int i = 0; i < _platformPrefabs.Length; i++)
    {
        Instantiate(_platformPrefabs[i], new Vector3(0, 0, i * 4), Quaternion.Euler(0, 90, 0));
        _zedOffset += 4;
    }
}
// i want this to wait
public void RecyclePlatform(GameObject Platform)
{
    Platform.transform.position = new Vector3(0, 0, _zedOffset);
    _zedOffset += 4;

}



}

the recyclePlatform function need to wait before it executes

Not familiar with Unity, but does it support async/await with tasks, such as "await Task.Delay(5000);", to wait 5 seconds in RecyclePlatform method? — JJJulien, Oct 29 '19 at 00:10
@JJulien Unity does support `async`, however this would cause the entire game thread to wait/freeze. Unity does however implement `routines` which create a separate thread, where we can perform these functions on. — TheLazyScripter, Oct 29 '19 at 01:55
Note that UnityScript is a JavaScript derivative created for Unity, and is a completely separate language to C#. — ProgrammingLlama, Oct 29 '19 at 04:19
Unity fully support async/await, but those are more for long file processing, or long computation as it can take advantage of multi-threads. When it comes to waiting for object to move, coroutines are more likely(tho await would do, don't get me wrong). — Everts, Oct 29 '19 at 09:27
Possible duplicate of [How make the script wait/sleep in a simple way in unity](https://stackoverflow.com/q/30056471/1092820) — Ruzihm, Oct 29 '19 at 13:38

score 1 · Answer 1 · edited Oct 29 '19 at 06:26

You can use this to wait whatever function or action you want to wait for. If you want to use Async Await:

public static async void DoActionAfterSecondsAsync(Action action, float seconds)
{
    await Task.Delay(TimeSpan.FromSeconds(seconds));
    action?.Invoke();
}

If you want to use Coroutine:

public IEnumerator void DoActionAfterSecondsRoutine(Action action, float seconds)
{
    yield return new WaitForSecondsRealtime(seconds);
    action?.Invoke();
}

score 1 · Accepted Answer · answered Oct 29 '19 at 08:42

1

Just put the code on a coroutine, and add the timeout

public void RecyclePlatform(GameObject Platform)
{
    StartCoroutine(RecyclePlatformCoroutine(Platform));
}

private IEnumerator RecyclePlatformCoroutine(GameObject Platform)
{
    yield return new WaitForSeconds(5);

    Platform.transform.position = new Vector3(0, 0, _zedOffset);
    _zedOffset += 4;
}

answered Oct 29 '19 at 08:42

Innat3

3,561
2
11
29

Thanks :D this worked like a charm <3 – Sindre Berge Oct 29 '19 at 19:57

score 0 · Answer 3 · answered Oct 29 '19 at 00:12

0

Turn it into a Unity Coroutine.

private IEnumerator RecyclePlatform(GameObject Platform)
{
    yield return new WaitForSeconds(numSecondsToWait); # we can use floats to specify more accurate times
    Platform.transform.position = new Vector3(0, 0, _zedOffset);
    _zedOffset += 4;
}

We then start the routine like this whenever we want.

StartCoroutine(RecyclePlatform);

answered Oct 29 '19 at 00:12

TheLazyScripter

2,541
1
10
19

StartCoroutine(RecyclePlatform); throws an error – Sindre Berge Oct 29 '19 at 06:54
It should be StartCoroutine(RecyclePlatform(someGameObject)); – Everts Oct 29 '19 at 09:24

score 0 · Answer 4 · answered Oct 29 '19 at 08:15

I recommend you use a utility class for this. That would look something like this.

public static class CooldownManager
{
    private class HiddenMonobehaviour : MonoBehaviour { }

    private static readonly MonoBehaviour mono;

    static CooldownManager()
    {
        GameObject obj = new GameObject("CooldownManager");
        UnityEngine.Object.DontDestroyOnLoad(obj);
        mono = obj.AddComponent<HiddenMonobehaviour>();
    }

    public static Coroutine Cooldown(float cooldownDuration, Action action)
    {
        return mono.StartCoroutine(InternalCooldown(cooldownDuration, action));
    }

    private static IEnumerator InternalCooldown(float cooldownDuration, Action action)
    {
        yield return new WaitForSeconds(cooldownDuration);
        action.Invoke();
    }
}

Using this you can write:

public class Example : MonoBehaviour
{
    void Start()
    {
        Cooldown(2, () => RecyclePlatform(gameObject));
    }

    void RecyclePlatform(GameObject Platform)
    {
        Platform.transform.position = new Vector3(0, 0, _zedOffset);
        _zedOffset += 4;
    }
}

any way to make my script wait for some seconds?

4 Answers4