Unity3d实现Flappy Bird游戏

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本文实例为大家分享了Unity3d实现Flappy Bird的具体代码，供大家参考，具体内容如下

一、小鸟

在游戏中，小鸟并不做水平位移，而是通过障碍物的移动让小鸟有水平运动的感觉，小鸟只需要对鼠标的点击调整竖直加速度就可以了，同时加上水平旋转模仿原版的FlappyBird的运动。同时，还要对竖直位置进行判断，否则游戏不能正常结束。

这里贴上小鸟上附加的脚本代码

Player.cs

using UnityEngine;
using System.Collections;
 
public class Player : MonoBehaviour {
 
 
 private Rigidbody body;
 public Vector3 jumpForce = new Vector3(0, 300, 0);
 private bool state = true; //确保只执行一次
 private int bestScore = 0;
 
 // Use this for initialization
 void Start () {
  
  body = transform.GetComponent<Rigidbody>();  
 }
 
 void OnCollisionEnter(Collision collisionInfo)
 {
  if (state)
  {
   //碰撞游戏结束
   state = false;
   Score.instance.state = false;
   AudioManager.instance.PlayHit();
   AudioManager.instance.PlayDie();
   Invoke("EndGame", 0.4f);
  }
  
  
 }
 
 // Update is called once per frame
 void Update () 
 {
  //下限
  if (transform.position.y < -20)
  {
   if (state)
   {
    state = false;
    Score.instance.state = false;
    AudioManager.instance.PlayDie();
    Invoke("EndGame", 0.4f);
   }
  }
 
  //上限
  if (transform.position.y > 20)
  {
   if (state)
   {
    state = false;
    Score.instance.state = false;
    AudioManager.instance.PlayDie();
    Invoke("EndGame", 0.4f);
   }
  }
  //判断鼠标左键点击或者空格
  if (Input.GetKeyDown(KeyCode.Space)||Input.GetMouseButtonDown(0))
  {
   AudioManager.instance.PlayFly();
   body.velocity = Vector3.zero;
   //加速度
   body.AddForce(jumpForce);
   //控制旋转量
   this.transform.rotation = Quaternion.Euler(45, 270, 0);
  }   
  else
  {
    //旋转
   if (transform.rotation.eulerAngles.x >= 280||transform.rotation.eulerAngles.x<=50)
   {
    
    transform.Rotate(-150 * Time.deltaTime, 0, 0);
   }
  }
 
 }
 
 public void EndGame()
 {
  //保存最佳成绩
  PlayerPrefs.SetInt("PlayerScore", Score.instance.score);
  bestScore = PlayerPrefs.GetInt("PlayerBestScore");
  if (Score.instance.score > bestScore)
   bestScore = Score.instance.score;
  PlayerPrefs.SetInt("PlayerBestScore", bestScore);
  //跳转到结束场景
  Application.LoadLevel("End");
 }
 
}

二、障碍物

障碍物只要定时产生，随机设定偏移量，然后添加向左运动的速度就行了，同时要设定自动销毁的时间，回收障碍物，否则内存占用会越来越大。

这里用了三个脚本，分别是上下障碍物和障碍物生成脚本。附加到一个空物体上就行了。

GenerateObstacle.cs

using UnityEngine;
using System.Collections;
 
public class GenrateObstacle : MonoBehaviour {
 
 public GameObject obstacle;
 public GameObject obstacle1;
 public float startTime = 1f;
 public float gapTime=1.5f;
 public float gapDistance = 13;
 private Vector3 gapVector;
 private Vector3 midVector;
 // Use this for initialization
 void Start () {
  InvokeRepeating("InitiateObstacle", startTime, gapTime);
  gapVector = new Vector3(0, gapDistance / 2, 0);
  
 }
 
 void InitiateObstacle()
 {
  midVector = new Vector3(8,Random.Range(-3.2f, 3.2f),0);
 
  Instantiate(obstacle, midVector+gapVector,new Quaternion(0,0,180,0));
  Instantiate(obstacle1, midVector-gapVector, Quaternion.identity);
  
 }
}

Obstacle.cs

using UnityEngine;
using System.Collections;
 
public class Obstacle : MonoBehaviour {
 
 public float speed = -8f;
 private Rigidbody body;
 private Transform player;
 private bool isPassed = false;
 // Use this for initialization
 void Start () {
  Destroy(this.gameObject, 4);
  body = this.GetComponent<Rigidbody>();
  body.velocity = new Vector3(speed, 0, 0);
  player = GameObject.FindGameObjectWithTag("Bird").transform;
 }
 
 // Update is called once per frame
 void Update () {
  if (player.transform.position.x > transform.position.x && isPassed == false)
  {
   isPassed = true;
   
   Score.instance.GetScore();
  }
 }
}

Obstacle1.cs

using UnityEngine;
using System.Collections;
 
public class Obstacle1 : MonoBehaviour {
 public float speed = -8f;
 private Rigidbody body;
 private Transform player;
 private bool isPassed = false;
 // Use this for initialization
 void Start()
 {
  Destroy(this.gameObject, 4);
  body = this.GetComponent<Rigidbody>();
  body.velocity = new Vector3(speed, 0, 0);
  player = GameObject.FindGameObjectWithTag("Bird").transform;
 }
 
 
}

此外还有分数显示，最佳分数显示，音效等等，都是细节。