// 比如：當(dāng)點擊打開解釋說明的按鈕時候
 public void clickOpenExplainScene() {
 if (!explainScene.activeSelf) {
  explainScene.SetActive (true);
 } 
 if (startScene.activeSelf) {
  startScene.SetActive (false);
 } 
 }

// 實現(xiàn)背景音樂播放的單例類
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class BGSingleton : MonoBehaviour {

 private static BGSingleton instance = null;
 public AudioSource audioSource = null;

 public static BGSingleton getSingleton() {
 if (instance == null) {
  instance = new BGSingleton ();
 }
 return instance;
 }
 void Awake () {
 if (instance != null && instance != this) {
  Destroy (this.gameObject);
 } else {
  instance = this;
  Debug.Log ("create");
 }
 DontDestroyOnLoad (this.gameObject);
 }

//通過主界面上的開關(guān)button控制是否靜音
 public void IsPlay(bool isPlay) {
 if (isPlay == true) {
  audioSource.mute = false;
  Debug.Log ("play background music");
 } else {
  audioSource.mute = true;
 }
 }
}

// mapMove.cs
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class mapMove : MonoBehaviour {

 public float speed = 300f;
 public RectTransform tube1;
 public RectTransform tube2;

 private RectTransform transform;
 // Use this for initialization
 void Awake () {
 transform = GetComponent<RectTransform>(); 
 }

 // Update is called once per frame
 void Update () {

 // Translate：Moves the transform in the direction and distance of translation.

 // If you add or subtract to a value every frame chances are you should multiply with Time.deltaTime.
 // When you multiply with Time.deltaTime you essentially express: 
 // I want to move this object 10 meters per second instead of 10 meters per frame.
 transform.Translate (Vector3.left * Time.deltaTime * speed);

 // 如果前一個地圖移到-764以外的地方，重放到764
 if (transform.anchoredPosition.x <= -764) {

  transform.anchoredPosition = new Vector2 (764, 0);
  // 設(shè)置水管的位置為隨機出現(xiàn)，x不變，y隨機出現(xiàn)
  tube1.anchoredPosition = new Vector2 (tube1.anchoredPosition.x, Random.Range (-110, 200));
  tube2.anchoredPosition = new Vector2 (tube2.anchoredPosition.x, Random.Range (-110, 200));
 }
 }
}

// 碰撞檢測
 void OnTriggerEnter2D (Collider2D other)
 {
 // 如果鳥碰到柱子
 if (other.gameObject.CompareTag("tube")) {

  if (!gameOver.activeSelf) {
  gameOver.SetActive (true);
  audioManager.singer.setAudio (audioClipType.hit);
  }

  // 通過地圖的名字獲取到地圖移動腳本
  mapMove map1 = GameObject.Find ("map1").GetComponent<mapMove> ();
  map1.enabled = false;

  mapMove map2 = GameObject.Find ("map2").GetComponent<mapMove> ();
  map2.enabled = false;

  Rigidbody2D playerRigidBody2D = GameObject.Find ("player").GetComponent<Rigidbody2D> ();
  Destroy (playerRigidBody2D);

 }
 }

// playerController.cs
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class playerController : MonoBehaviour {

 private Rigidbody2D player;

 public AudioSource playerAudio;
 public float speed;
 // Use this for initialization
 void Start () {
 player = GetComponent<Rigidbody2D>();
 // 重置分數(shù)
 gameSingleton.getSingleton ().score = 0;
 }

 // Update is called once per frame
 void Update () {
 // 如果鳥被銷毀游戲結(jié)束了，直接返回
 if (player == null) { return; }

 // 當(dāng)點擊鼠標，給鳥一個向上的速度
 if (Input.GetMouseButtonDown (0)) {
  player.velocity = new Vector2(0, speed);
//  audioManager.singer.setAudio (audioClipType.wing);
  // 因為翅膀的聲音和過柱子的聲音，不能是同個線程的
  if (!gameSingleton.getSingleton ().isMute) {
  playerAudio.Play();
  }

 }

 // 通過判斷鳥的速度正負設(shè)計鳥的頭的轉(zhuǎn)向，
 if (player.velocity.y > 0) {
  transform.eulerAngles = new Vector3 (0, 0, 45);
 } else {
  transform.eulerAngles = new Vector3 (0, 0, -45);
 }
 }

}

// gameSingleton.cs
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class gameSingleton {

 // 使用單例模式記錄分數(shù)
 // 顯然單例模式的要點有三個；一是某個類只能有一個實例；
 // 二是它必須自行創(chuàng)建這個實例；三是它必須自行向整個系統(tǒng)提供這個實例。
 // 從具體實現(xiàn)角度來說，就是以下三點：一是單例模式的類只提供私有的構(gòu)造函數(shù)，
 // 二是類定義中含有一個該類的靜態(tài)私有對象，三是該類提供了一個靜態(tài)的公有的函數(shù)用于創(chuàng)建或獲取它本身的靜態(tài)私有對象。

 public float score;
 public float bestScore;
 public bool isMute; // 用來控制音效
// public bool isFirstToPlay;

 // 含有一個靜態(tài)私有對象，這也是唯一一個對象
 private static gameSingleton singer;

 // 私有的構(gòu)造函數(shù)
 private gameSingleton () {
 score = 0;
 bestScore = 0;
 isMute = false;
// isFirstToPlay = true;
 }

 // 提供一個靜態(tài)的公有函數(shù) 用于創(chuàng)建或獲取本身的靜態(tài)私有對象
 public static gameSingleton getSingleton() {
 if (singer == null) {
  singer = new gameSingleton ();
 }
 return singer;
 }

 public void setBestScore() {
 if (score > bestScore) {
  bestScore = score;
 }
 }

}