UnityCoroutineTimer/Timer.cs at main · Gongpai/UnityCoroutineTimer · GitHub

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using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using UnityEngine.Events;

namespace KongZEE.Timer
{
    public class Timer
    {
        private MonoBehaviour monoBehaviour;
        Dictionary<TimerKey, Coroutine>  coroutines = new ();
        private TimerKey _timerKeyDisposable;

        public Timer(MonoBehaviour monoBehaviour)
        {
            this.monoBehaviour = monoBehaviour;
        }

        public void StartTimerDisposable(float seconds, UnityAction<float> action = null)
        {
            if (coroutines.Count > 0 && coroutines.ContainsKey(_timerKeyDisposable))
            {
                monoBehaviour.StopCoroutine(coroutines[_timerKeyDisposable]);
                coroutines.Remove(_timerKeyDisposable);
            }

            _timerKeyDisposable = StartTimer(seconds, action);
        }


        public TimerKey StartTimer(float seconds, UnityAction<float> action = null)
        {
            Debug.Log($"StartTimer : {seconds}");
            TimerKey timerKey = new TimerKey();

            if (action != null)
            {
                action += time => { timerKey.elapsed = time; };
            }

            timerKey.time = seconds;
            Coroutine coroutine = monoBehaviour.StartCoroutine(TimerRunner(() => timerKey.time, () => timerKey.paused, action));
            coroutines.Add(timerKey, coroutine);
            timerKey.action = action;

            return timerKey;
        }

        public void ResumeTimer(TimerKey timerKey = null)
        {
            if (timerKey == null)
            {
                if (coroutines.Count > 0)
                {
                    coroutines.Keys.ElementAt(0).paused = false;
                }
            }else if (coroutines.ContainsKey(timerKey))
            {
                timerKey.paused = false;
            }
        }

        public void PauseTimer(TimerKey timerKey = null)
        {
            if (timerKey == null)
            {
                if (coroutines.Count > 0)
                {
                    coroutines.Keys.ElementAt(0).paused = true;
                }
            }else if (coroutines.ContainsKey(timerKey))
            {
                timerKey.paused = true;
            }
        }

        public void StopTimer(TimerKey timerKey = null)
        {
            if (timerKey == null)
            {
                if (coroutines.Count > 0)
                {
                    monoBehaviour.StopCoroutine(coroutines.Values.ElementAt(0));
                }
            }else if (coroutines.ContainsKey(timerKey))
            {
                if (coroutines[timerKey] != null)
                {
                    monoBehaviour.StopCoroutine(coroutines[timerKey]);
                    coroutines.Remove(timerKey);
                }
                else
                {
                    Debug.LogWarning($"NullReferenceException: routine is null");
                }
            }
        }

        public void ResetTimer(TimerKey timerKey = null)
        {
            if (coroutines.Count < 0) return;

            if (timerKey == null)
            {
                if (coroutines.Count > 0)
                {
                    monoBehaviour.StopCoroutine(coroutines.Values.ElementAt(0));
                    coroutines.Remove(coroutines.Keys.ElementAt(0));
                }
            }else if (coroutines.ContainsKey(timerKey))
            {
                monoBehaviour.StopCoroutine(coroutines[timerKey]);
                coroutines.Remove(timerKey);
            }

            TimerKey currentTimerKey = timerKey ?? coroutines.Keys.ElementAt(0);
            currentTimerKey.paused = true;
            currentTimerKey.elapsed = 0.0f;
            currentTimerKey.action?.Invoke(0.0f);
            Coroutine coroutine = monoBehaviour.StartCoroutine(TimerRunner(() => currentTimerKey.time, () => currentTimerKey.paused, currentTimerKey.action));
            coroutines.Add(currentTimerKey, coroutine);
        }

        public void StopAllTimers()
        {
            foreach (var coroutine in coroutines)
            {
                monoBehaviour.StopCoroutine(coroutine.Value);
            }
        }

        private IEnumerator TimerRunner(Func<float> seconds, Func<bool> shouldRunFunc, UnityAction<float> action)
        {
            float time = seconds?.Invoke() ?? 0.0f;

            if (seconds?.Invoke() > 0)
            {
                while (time > 0)
                {
                    bool pause = shouldRunFunc?.Invoke() ?? true;

                    if (!pause)
                    {
                        time -= Time.deltaTime;

                        action?.Invoke(time);
                    }

                    yield return new WaitForEndOfFrame();
                }
            }
            else
            {
                time = 0f;
                action?.Invoke(time);
            }
        }
    }

    [Serializable]
    public class TimerKey
    {
        public bool paused;
        public float elapsed;
        public float time;
        public UnityAction<float> action;

        public TimerKey()
        {

        }
    }
}