Unity实现Flappy Bird游戏开发实战

// 比如：当点击打开解释说明的按钮时候
  public void clickOpenExplainScene() {
    if (!explainScene.activeSelf) {
      explainScene.SetActive (true);
    } 
    if (startScene.activeSelf) {
      startScene.SetActive (false);
    }  
  }

// 实现背景音乐播放的单例类
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);
  }

//通过主界面上的开关button控制是否静音
  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);

    // 如果前一个地图移到-764以外的地方，重放到764
    if (transform.anchoredPosition.x <= -764) {

      transform.anchoredPosition = new Vector2 (764, 0);
      // 设置水管的位置为随机出现，x不变，y随机出现
      tube1.anchoredPosition = new Vector2 (tube1.anchoredPosition.x, Random.Range (-110, 200));
      tube2.anchoredPosition = new Vector2 (tube2.anchoredPosition.x, Random.Range (-110, 200));
    }
  }
}

// 碰撞检测
  void OnTriggerEnter2D (Collider2D other)
  {
    // 如果鸟碰到柱子
    if (other.gameObject.CompareTag("tube")) {

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

      // 通过地图的名字获取到地图移动脚本
      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>();
    // 重置分数
    gameSingleton.getSingleton ().score = 0;
  }

  // Update is called once per frame
  void Update () {
    // 如果鸟被销毁游戏结束了，直接返回
    if (player == null) { return; }

    // 当点击鼠标，给鸟一个向上的速度
    if (Input.GetMouseButtonDown (0)) {
      player.velocity = new Vector2(0, speed);
//     audioManager.singer.setAudio (audioClipType.wing);
      // 因为翅膀的声音和过柱子的声音，不能是同个线程的
      if (!gameSingleton.getSingleton ().isMute) {
        playerAudio.Play();
      }

    }

    // 通过判断鸟的速度正负设计鸟的头的转向，
    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 {

  // 使用单例模式记录分数
  // 显然单例模式的要点有三个；一是某个类只能有一个实例；
  // 二是它必须自行创建这个实例；三是它必须自行向整个系统提供这个实例。
  // 从具体实现角度来说，就是以下三点：一是单例模式的类只提供私有的构造函数，
  // 二是类定义中含有一个该类的静态私有对象，三是该类提供了一个静态的公有的函数用于创建或获取它本身的静态私有对象。

  public float score;
  public float bestScore;
  public bool isMute; // 用来控制音效
// public bool isFirstToPlay;

  // 含有一个静态私有对象，这也是唯一一个对象
  private static gameSingleton singer;

  // 私有的构造函数
  private gameSingleton () {
    score = 0;
    bestScore = 0;
    isMute = false;
//   isFirstToPlay = true;
  }

  // 提供一个静态的公有函数 用于创建或获取本身的静态私有对象
  public static gameSingleton getSingleton() {
    if (singer == null) {
      singer = new gameSingleton ();
    }
    return singer;
  }

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

}