fullscript

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

public class Flake
{
    public Sprite sprite;

    public int col { get; set; }
    public int row { get; set; }
    public float alpha { get; set; }
    public Vector2 pos { get; set; }
    public float scale { get; set; }
    public Vector2 velocity { get; set; }

    SpriteRenderer flakeRenderer;
    GameObject menuObject;

    Transform t;


    public Flake(Sprite spr, int c, int r, float a, Vector2 p, float s, Vector2 v)
    {
        //menuObject = GameObject.Find("MenuBackGround");
        //flakeRenderer = menuObject.GetComponent<SpriteRenderer>();

        string n = "flakes_" + spr.ToString();
        sprite = spr;

        //flakeRenderer.sprite = sprite;
        col = c;
        row = r;
        alpha = a;
        pos = p;
        scale = s;
        velocity = v;
    }

    public void Update(float elapsed)
    {

        if (sprite == null)
            Debug.Log("null sprite!");


        alpha -= 45 * elapsed;
        alpha = Mathf.Clamp(alpha, 0, 255);

        scale -= 0.055f * elapsed;
        scale = Mathf.Clamp(scale, 0, 2.0f);

        pos += velocity * elapsed;

        t.localPosition = new Vector3(pos.x, 0, pos.y);
    }

}

public class mainMenu : MonoBehaviour
{
    SpriteRenderer fr;
    public Sprite[] sprites;

    enum MenuState
    {
        fadeIn,
        menu,
    };


    MenuState menuState = MenuState.fadeIn;

    GameObject subtext;
    GameObject titleLogo;
    GameObject start;

    float startAlpha = 0;
    float titleAlpha = 0;
    float subAlpha = 0;

    Color theColor;

    List<Flake> flakeList = new List<Flake>();
    float flakeTimer = 0.0f;
    float flakeDelay = 0.075f;

    public static bool FadeTitle { get; set; }
    int titleFadeDir = 1;

    public int flakeCount = 0;
    public int flakeSpriteCount = 0;

    // Use this for initialization
    void Start ()
    {
        fr = GetComponent<SpriteRenderer>();

        start = GameObject.Find("start");
        start.renderer.material.color = new Color(1, 1, 1, startAlpha);

        subtext = GameObject.Find("subtext");
        subtext.renderer.material.color = new Color(1, 1, 1, subAlpha);

        titleLogo = GameObject.Find("titlenosnow");
        titleLogo.renderer.material.color = new Color(1, 1, 1, titleAlpha);

        sprites = Resources.LoadAll<Sprite>("Flakes");

        flakeList.Add(new Flake(this.sprites[Random.Range(0, this.sprites.GetLength(0) - 1)], 0, 0, 1, new Vector2(1, 1), 1, new Vector2(1, 1)));
        flakeSpriteCount = sprites.GetLength(0);
    }

    // Update is called once per frame
    void Update ()
    {
        float elapsed = Time.deltaTime;

        #region handle falling snow

        flakeTimer += Time.deltaTime;

        if (flakeTimer > flakeDelay)
        {
            // add a flake
            flakeTimer = 0.0f;
            flakeList.Add(new Flake(this.sprites[Random.Range(0, this.sprites.GetLength(0) - 1)], (int)helpers.RandomBetween(0, 3), (int)helpers.RandomBetween(0, 4), helpers.RandomBetween(127, 255), new Vector2(helpers.RandomBetween(40, 1240), -75), helpers.RandomBetween(0.75f, 1.25f), new Vector2(helpers.RandomBetween(-20, 20), helpers.RandomBetween(30, 150))));
        }

        flakeCount = flakeList.Count;

        int index = 0;
        while (index < flakeList.Count)
        {
            flakeList[index].Update(elapsed);

            if (flakeList[index].pos.y > 600)
            {
                flakeList.RemoveAt(index);
            }
            else
                index++;
        }



        #endregion


        if (menuState == MenuState.fadeIn)
        {
            titleAlpha += Time.deltaTime * 1.5f;
            theColor = new Color(1, 1, 1, titleAlpha);
            titleLogo.renderer.material.color = theColor;

            if(titleAlpha > 0.35f)
            {
                subAlpha += Time.deltaTime * 2f;
                theColor = new Color(1, 1, 1, subAlpha);
                subtext.renderer.material.color = theColor;

                if(subAlpha > 0.75f)
                {
                    startAlpha += Time.deltaTime * 2f;
                    theColor = new Color(1, 1, 1, startAlpha);
                    start.renderer.material.color = theColor;
                }
            }

            titleAlpha = Mathf.Clamp(titleAlpha, 0f, 1f);
            subAlpha = Mathf.Clamp(subAlpha, 0f, 1f);
            startAlpha = Mathf.Clamp(startAlpha, 0f, 1f);

            if(titleAlpha > 0.95f && subAlpha > 0.95f && startAlpha > 0.95f)
            {
                theColor = new Color(1, 1, 1, 1);
                subtext.renderer.material.color = theColor;
                titleLogo.renderer.material.color = theColor;
                start.renderer.material.color = theColor;
            }

            if(Input.anyKeyDown || Input.GetMouseButtonDown(0))
            {
                menuState = MenuState.menu;
            }

        }


        if (menuState == MenuState.menu)
        {
            subAlpha = Mathf.Clamp(subAlpha, 0, 1f);

            if(subAlpha > 0)
            {
                subAlpha -= Time.deltaTime * 4f;
                theColor = new Color(1, 1, 1, subAlpha);
                subtext.renderer.material.color = theColor;
                start.renderer.material.color = theColor;
            }
        }

    }
}