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

namespace JunFramework
{
    public enum UpdateMode
    {
        Update,
        FixedUpdate,
        LateUpdate
    }

    public enum TimeMode
    {
        Scaled,
        UnScaled
    }
    public class UpdateRegister : MonoBehaviour
    {
        /// <summary>
        /// update
        /// </summary>
        private static Dictionary<int, Action> update = new Dictionary<int, Action>();

        /// <summary>
        /// fixedupfate
        /// </summary>
        private static Dictionary<int, Action> fixedupdate = new Dictionary<int, Action>();

        /// <summary>
        /// lateupdate
        /// </summary>
        private static Dictionary<int, Action> lateupdate = new Dictionary<int,Action>(); 

        ///  <summary> 
        /// Globally unique update subscript
         ///  </summary> 
        private  static  int updateIndex = 0 ; 
      
        ///  <summary> 
        /// Whether to initialize
         ///  </summary> 
        private  static  bool isInit = false ; 

        ///  <summary> 
        /// has been initialized
         ///  </summary> 
        public  static  bool IsInit 
        { 
            get => isInit; 
        } 

        ///  <summary> 
        /// register
        /// </summary>
        /// <param name="mode"></param>
        /// <param name="handler"></param>
        /// <returns></returns>
        public static int Register(UpdateMode mode, Action handler)
        {
            ++updateIndex;
            switch (mode)
            {
                case UpdateMode.Update:
                    update.Add(updateIndex, handler);
                    break;
                case UpdateMode.FixedUpdate:
                    fixedupdate.Add(updateIndex, handler);
                    break;
                case UpdateMode.LateUpdate:
                    lateupdate.Add(updateIndex, handler);
                    break;
            }
            return updateIndex;
        }

        /// <summary>
        /// Unregister according to updateindex
        /// </summary>
        /// <param name="mode"></param>
        /// <param name="index"></param>
        public static void Cancle(UpdateMode mode, int index)
        {
            switch (mode)
            {
                case UpdateMode.Update:
                    update.Remove(index);
                    break;
                case UpdateMode.FixedUpdate:
                    fixedupdate.Remove(index);
                    break;
                case UpdateMode.LateUpdate:
                    lateupdate.Remove(index);
                    break;
            }
        }

        private void Awake()
        {
            isInit = true;
        }

        private void Update()
        {
            using (var e = update.GetEnumerator())
            {
                if (e.MoveNext())
                {
                    e.Current.Value?.Invoke();
                }
            }
        }

        private void FixedUpdate()
        {
            using (var e = fixedupdate.GetEnumerator())
            {
                if (e.MoveNext())
                {
                    e.Current.Value?.Invoke();
                }
            }
        }

        private void LateUpdate()
        {
            using (var e = lateupdate.GetEnumerator())
            {
                if (e.MoveNext())
                {
                    e.Current.Value?.Invoke();
                }
            }
        }
    }
}

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

namespace JunFramework.Timer 
{ 
    public  class Timer 
    { 
        #region timer setting /// <summary> /// Timer is automatically released
         /// </summary > public static bool IsAutoRelease = true ; /// <summary> /// Timer update mode
         /// </summary> public static UpdateMode TimerUpdateMode =

         
         
          

         
         
         UpdateMode.FixedUpdate; 

        ///  <summary> 
        /// Whether the Timer time is affected by Unity scaling
         ///  </summary> 
        public  static TimeMode TimerScaledModel = TimeMode.UnScaled; 

        #endregion 

        private  float currentTime = 0f; // Current time ( 0 -- steptime) 
        private  int currentRepeat = 0 ; // current repeat times 
        private  float stepTime = 0f; // interval 
        private  int repeatTimes = 0 ; // repeat times 
        private  bool isLoop = false; // Whether to loop 
        private  bool isDone = false ; // Whether to complete 
        private  bool isStart = false ; // Whether to start 
        private  int updateIndex = 0 ; // The subscript obtained by update registration is used to remove update registration 
        private Action callback; // Callback 
        private  float timeAcceleration; // Increased time per frame 

        ///  <summary> 
        /// Is it complete
         ///  </summary> 
        public  bool IsDone 
        { 
            get =>isDone; 
        } 

        ///  <summary> 
        /// Current Progress
         ///  </summary> 
        public  float Progress 
        { 
            get => currentTime / stepTime; 
        } 

        ///  <summary> 
        /// Is it working
         ///  </ summary> summary> 
        public  bool IsWokring 
        { 
            get => !isDone && isStart; 
        } 

        ///  <summary> 
        ///  
        ///  </summary> 
        ///  <param name="stepTime"> Interval duration </param> 
        // / <param name="repeatTimes">times of repetition</param>
        /// <param name="callback">call-back</param>
        public Timer(float stepTime, int repeatTimes, Action callback)
        {
            this.currentTime = 0f;
            this.currentRepeat = 0;
            this.stepTime = stepTime;
            this.repeatTimes = repeatTimes;
            this.isLoop = false;
            this.isDone = false;
            this.timeAcceleration = GetPerTime();
            this.callback = callback;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="stepTime">interval</param>
        /// <param name="callback">call-back</param>
        public Timer(float stepTime, Action callback)
        {
            this.currentTime = 0f;
            this.currentRepeat = 0;
            this.stepTime = stepTime;
            this.repeatTimes = 1;
            this.isLoop = false;
            this.isDone = false;
            this.timeAcceleration = GetPerTime();
            this.callback = callback;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="stepTime">Interval</param>
        /// <param name="isLoop">Loop or not</param>
        /// <param name="callback">call-back</param>
        public Timer(float stepTime, bool isLoop, Action callback)
        {
            this.currentTime = 0f;
            this.currentRepeat = 0;
            this.stepTime = stepTime;
            this.isLoop = isLoop;
            if (!isLoop)
            {
                this.repeatTimes = 1;
            }
            this.timeAcceleration = GetPerTime();
            this.isDone = false;
            this.callback = callback;
        }

        /// <summary>
        /// Update every frame
         ///  </summary> 
        ///  <param name="addTime"> Added time per frame </param> 
        private  void Update( float addTime) 
        { 
            if (isDone)
                 return ;
             if (! isStart)
                 return ; 

            currentTime += addTime;
             if (currentTime >= stepTime) 
            { 
                callback ? .Invoke(); 
                currentTime = 0f;
                 if (!isLoop)
                {
                    ++currentRepeat;
                    if (currentRepeat >= repeatTimes)
                    {
                        isDone = true;
                        if (IsAutoRelease)
                        {
                            Stop();
                        }
                    }
                }
            }
        }

        /// <summary>
        /// TimerStart
        /// </summary>
        public void Start()
        {
            if(! UpdateRegister.IsInit) 
            { 
                Debug.LogWarning( " UpdateRegister is not init, so this action will not work, please init UpdateRegister first!!! " );
                 return ; 
            } 
            isStart = true ;
             this .updateIndex = UpdateRegister.Register(TimerUpdateMode , () => this .Update(timeAcceleration)); 
        } 

        ///  <summary> 
        /// Stop the timer (if you just want to pause the available Pause, the stop operation cannot be resumed)
         ///  </summary> 
        public  void Stop( ) 
        {
            isStart = false;
            isDone = true;
            UpdateRegister.Cancle(TimerUpdateMode, this.updateIndex);
        }

        /// <summary>
        /// Pause
        /// </summary>
        public void Pause()
        {
            isStart = false;
        }

        /// <summary>
        /// Continue
        /// </summary>
        public void Resume()
        {
            isStart = true; 
        } 

        ///  <summary> 
        /// Reset
         ///  </summary> 
        public  void Reset() 
        { 
            isStart = false ; 
            isDone = false ; 
            currentTime = 0f; 
            currentRepeat = 0 ; 
        } 

        ///  <summary> 
        / // No need to wait, complete directly
         ///  </summary> 
        public  void Complete() 
        { 
            if (isLoop)
                 return; 
            isDone = true ; 

            int tempRepeat = repeatTimes;
             while (tempRepeat > 0 ) 
            { 
                callback ? .Invoke();
                 -- tempRepeat; 
            } 
            Stop(); 

        } 

        ///  <summary> 
        /// Obtained by update mode and time mode Update time per frame
         ///  </summary> 
        ///  <returns></returns> 
        private  float GetPerTime() 
        { 
            float resultTime = 0f;
             if (TimerScaledModel == TimeMode.Scaled && TimerUpdateMode == UpdateMode.FixedUpdate)
            {
                resultTime = Time.fixedDeltaTime;
            }
            else if (TimerScaledModel == TimeMode.UnScaled && TimerUpdateMode == UpdateMode.FixedUpdate)
            {
                resultTime = Time.fixedUnscaledDeltaTime;
            }
            else if (TimerScaledModel == TimeMode.Scaled && TimerUpdateMode == UpdateMode.Update)
            {
                resultTime = Time.deltaTime;
            }
            else if (TimerScaledModel == TimeMode.UnScaled && TimerUpdateMode == UpdateMode.FixedUpdate)
            {
                resultTime = Time.unscaledDeltaTime;
            }
            return resultTime;
        }
    }
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using JunFramework.Timer;

public class TimerExample : MonoBehaviour
{
    private Timer timer = null;
    // Start is called before the first frame update
    void Start()
    {
        Timer.IsAutoRelease = true;
        Timer.TimerScaledModel = JunFramework.TimeMode.UnScaled;
        Timer.TimerUpdateMode = JunFramework.UpdateMode.FixedUpdate;

        //Example1
        //int i = 0;
        //Timer timer = new Timer(2, 2, () => Debug.Log(i++));
        //timer.Start();

        //Example2
        //timer = new Timer(2, true, () => Debug.Log("Exeture"));
        //timer.Start();

        //Example3
        timer = new Timer(2, 3, () => Debug.Log("LookMe"));
        timer.Start();
        timer.Complete();

        timer.Reset();
        timer.Start();
    }

    // Update is called once per frame
    void Update()
    {
        //Example2
        //if (Input.GetKeyDown(KeyCode.Space))
        //{
        //    timer.Pause();
        //}
        //else if (Input.GetKeyDown(KeyCode.A))
        //{
        //    timer.Resume();
        //}
    }
}