Unity3d实现Flappy Bird游戏

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);
  
 }
}

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();
  }
 }
}

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;
 }
 
 
}								 
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