using UnityEngine;

using System.Collections;

public class GameQuit : MonoBehaviour
{
    private int mPressTimes = 0;

    // Use this for initialization

    void Start()
    {
        //Ensure that there is only one gameQuit in the Scene，即使加载了下个场景Scene

        //GameObject[] gameQuits = GameObject.FindGameObjectsWithTag("GameQuit");

        //if (gameQuits.Length == 2)
        //{
        //    Destroy(this.gameObject);

        //}

        DontDestroyOnLoad(this.gameObject);

    }

    // Update is called once per frame

    void Update()
    {
        if (Input.GetKeyDown(KeyCode.Escape))
        {//KeyCode.Escape表示键盘ESC,手机的返回键

            mPressTimes++;

            StartCoroutine("ResetMPressTimes", 1.0f);//若过了1秒都没有按第2次则重置mPressTimes

            if (mPressTimes == 2)
            {
                Application.Quit();
            }

        }

    }

    IEnumerator ResetMPressTimes(float sec)
    {
        yield return new WaitForSeconds(sec);

        mPressTimes = 0;

    }

}