Runner2018/Assets/!Santa/Scripts/ScreenSnowController.cs

using UnityEngine;
using System.Collections;

public class ScreenSnowController : MonoBehaviour
{
    public static ScreenSnowController Instance { get; private set; }

    [SerializeField] private TweenAlpha [] _tweens;

    private int _index;
    private bool forward = true;
    private float dur = 1.5f;
    // Use this for initialization
    private void Start()
    {
        if (!Instance)
        {
            Instance = this;
            return;
        }

        foreach (var tween in _tweens)
        {
            tween.onFinished.Add(new EventDelegate(OnTweenFinished));
        }

        foreach (var tween in _tweens)
        {
            tween.duration = dur;
        }
    }


    private void Update()
    {
        //if (Input.GetKeyDown(KeyCode.F3))
        //{
        //    Duplicate();
        //}
    }

    private void OnTweenFinished()
    {
        //if (forward)
        //{
        //    _index++;
        //    if (_index == _tweens.Length)
        //    {
        //        forward = false;
        //        foreach (var tween in _tweens)
        //        {
        //            tween.duration = dur;
        //        }

        //        foreach (var tween in _tweens)
        //        {
        //            tween.onFinished.Clear();
        //        }

        //        foreach (var tween in _tweens)
        //        {
        //            tween.onFinished.Add(new EventDelegate(OnTweenFinished));
        //        }

        //        _tweens[_tweens.Length - 1].Play(false);

        //    }
        //    else
        //    {
        //        _tweens[_index].Play(true);
        //    }
        //}
        //else
        //{
        //    _index--;
        //    if (_index < 0)
        //    {
        //        Destroy(gameObject);
        //    }
        //    else
        //    {
        //        _tweens[_tweens.Length - 1].Play(false);
        //    }
        //}
     }

        public void Duplicate()
    {
        var go = Instantiate(gameObject);
        go.transform.parent = transform.parent;
        go.transform.position = transform.position;
        go.transform.localScale = transform.localScale;
        go.SendMessage("Snow");
    }

    private void Snow()
    {
        StartCoroutine(Fade());
    }

    private IEnumerator Fade()
    {
        foreach (var tween in _tweens)
        {
            tween.duration = dur;
            tween.Play(true);
        }

        yield return new WaitForSeconds(1.5f);
        Destroy(gameObject);
        
    }
}