Having hard time implementing Debounce Method

[kenofori]

Hi there,

I'm having hard time implemeting debounce method using UniTask
https://angular.io/guide/http-optimize-server-interaction

I'd appreciate if someone provides the right approach.

Please advise

My failed attempt

 public async UniTaskVoid DebounceMethod()
        {
            if (taskCompletionSource != null)
            {
                taskCompletionSource.TrySetCanceled();
                taskCompletionSource = null;
            }
 
           
            taskCompletionSource = AutoResetUniTaskCompletionSource<bool>.Create();
 
            await UniTask.WaitForSeconds(delayInSeconds);
     
            taskCompletionSource.TrySetResult(true);
 
            taskCompletionSource = null;
           
            onDefaultEvent(this);
        }

[Maesla]

This is my approach

using Cysharp.Threading.Tasks;
using System;
using System.Threading;

public class Debouncer
{
    private readonly float debounceTime;
    private readonly Action action;
    private CancellationTokenSource cts;

    public Debouncer(float ms, Action action)
    {
        this.debounceTime = ms;
        this.action = action;
    }

    public void Call()
    {
        cts?.Cancel();
        cts = new CancellationTokenSource();
        DebounceCall(cts.Token).Forget();
    }

    private async UniTask DebounceCall(CancellationToken cancellationToken)
    {
        await UniTask.Delay(TimeSpan.FromMilliseconds(debounceTime), cancellationToken: cancellationToken);

        if (!cancellationToken.IsCancellationRequested)
        {
            action();
        }
    }
}

And how to use it

using UnityEngine;

public class UniTaskDebounceExample : MonoBehaviour
{
    private Debouncer debouncer;

    private void Start()
    {
        debouncer = new Debouncer(500, () => Debug.Log("Hello world!"));
    }

    private void Update()
    {
        if (Input.GetKeyDown(KeyCode.Space)) 
        {
            debouncer.Call();
        }
    }
}