TimedAction.cs

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

[System.Serializable]
public class TimedAction 
{
	private DateTime _time_started;
	private DateTime _last_date;
	private float _action_ratio;
        private double _time_progress;
	[SerializeField]
	private float _duration;
	[SerializeField]
	private long _seria_time_started;
	[SerializeField]
	private long _seria_time_progress;

	public float duration { get { return _duration; } }
	public float ratio { get { return _action_ratio; } }
	public DateTime time_started { get { return _time_started; } }

	public TimedAction(float duration, DateTime date)
	{
		_time_started = date;
		_last_date = _time_started;
		_duration = duration;
		_action_ratio = 0.0f;
	}

	public void Update(DateTime new_date)
	{
		double delta = MsElapsed (new_date, _last_date);
		_time_progress += delta/1000f;
		_action_ratio = Mathf.Min ((float)_time_progress / _duration, 1f);
		_last_date = new_date;
	}
		
	private double MsElapsed(DateTime a, DateTime b)
	{
		return a.Subtract(b).TotalMilliseconds;
	}

	public string SerializeToJSON()
	{
		_seria_time_started = this.time_started.ToFileTimeUtc();
		_seria_last_date = this._last_date.ToFileTimeUtc();
		return JsonUtility.ToJson(this, true); // TODO: Display the content of the string.
	}
}

/*
[Serializable]
public struct TimedActionStruct {
    public long time_started;
    public float duration;
    // public double action_ratio; Calculable avec: time_progress / duration
    // public double time_progress; Calculable avec: delta/1000 * msElapsed(new_date, _last_date)
    // public double delta; Calculable avec le _last_date;
    public long _last_date;

}
*/