using System;
using UnityEngine;

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

public class DelayCall : MonoBehaviour 
{
    #region Config

    public static DelayCall Instance
    {
        get
        {
            if (instance == null)
            {
                GameObject go = new GameObject("DelayCall");
                instance = go.AddComponent<DelayCall>();
                DontDestroyOnLoad(go);
            }

            return instance;
        }
        set { instance = value; }
    }
    private static DelayCall instance;

    #endregion

    public static Coroutine Call(int delayFrame, Action action)
    {
        return Instance.StartCoroutine(EDelayCall(delayFrame, action));
    }

    public static Coroutine Call(float delayTime, Action action)
    {
        return Instance.StartCoroutine(EDelayCall(delayTime, action));
    }

    public static void stopCoroutine(Coroutine coroutine)
    {
        Instance.StopCoroutine(coroutine);
    }

    private static IEnumerator EDelayCall(int delayFrame, Action action)
    {
        int count = 0;

        while (count++ < delayFrame)
            yield return null;

        action.SafeInvoke();
    }

    private static IEnumerator EDelayCall(float delayTime, Action action)
    {
        yield return new WaitForSeconds(delayTime);
        
        action.SafeInvoke();
    }
}