Unity class for coroutine execution debouncing.

Debouncer.cs

using System;
using System.Collections;
using UnityEngine;

/// <summary>
/// Delays execution of an action until a specified time has passed without it being triggered again.
/// Useful to prevent rapid-fire calls to expensive operations.
/// https://developer.mozilla.org/en-US/docs/Glossary/Debounce
/// </summary>
public class Debouncer
{
    Coroutine coroutine;
    readonly MonoBehaviour coroutineRunner;
    readonly float delay;

    public Debouncer(MonoBehaviour coroutineRunner, float delay)
    {
        this.coroutineRunner = coroutineRunner;
        this.delay = delay;
    }

    public void Debounce(Action action)
    {
        if (coroutine != null)
        {
            coroutineRunner.StopCoroutine(coroutine);
        }

        coroutine = coroutineRunner.StartCoroutine(InvokeActionAfterDelay(action));
    }

    IEnumerator InvokeActionAfterDelay(Action action)
    {
        yield return new WaitForSeconds(delay);
        action.Invoke();
        coroutine = null;
    }
}