初始Unity 3D——小Demo打砖块

需求：鼠标点击墙壁，从观察者角度发射子弹，击中墙壁砖块。子弹在五秒钟后消失

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从小Demo中学习解决问题的逻辑思路：
1：使用prafab循环创建一堵墙
2：监听鼠标与墙壁的“碰撞“事件
3：发射子弹

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1、循环创建墙壁
声明public变量，将砖块brick拖进去

void CreateWall(){    for(int i=0;i< width;i++){        for(int j=0;j< height;j++){            GameObject.Instantiate(brick,newVector3(i.j.0),Quaternion.identity)    }      }}

2、发射射线，检测两个碰撞

//从主摄像机发射射线到鼠标左键点击的位置ray=Camera.main.ScreenPointToRay(Input.position);if(Physics.Raycast(ray,out hit)){    ...}

3、发射子弹

//创建子弹：GameObject b=GameObject.Instantiate(bullet,camera位置);//获取子弹发射路线，也就是一个向量v=hit.position-camera位置;//沿着路径发射子弹b.GetComponent<Rigidbody>().AddForce(v*100);

还是感觉没得写，因为步骤简单，想要记住代码的话需要多去实践。下面贴出完整代码。

using UnityEngine;using System.Collections;public class RayTest2 : MonoBehaviour {    public GameObject brick;    public GameObject bullet;    private int width=10;    private int height = 6;    private Ray ray;    private RaycastHit hit;    private Transform m_Transform;    void Start () {        m_Transform = gameObject.GetComponent<Transform>();        CreateWall();    }    void Update () {        Fire();             //发射子弹    }    /// <summary>    /// 发射子弹    /// </summary>    void Fire()    {        if (Input.GetMouseButtonDown(0))        {            ray = Camera.main.ScreenPointToRay(Input.mousePosition);            if(Physics.Raycast(ray, out hit))            {                //GameObject.Destroy(hit.collider.gameObject);                     //让砖块消失                //获取子弹发射的路线   Vector3向量                Vector3 v = hit.point - m_Transform.position;                GameObject tempBullet = GameObject.Instantiate(bullet, m_Transform.position, Quaternion.identity) as GameObject;                tempBullet.GetComponent<Rigidbody>().AddForce(v*100);            }        }    }    /// <summary>    /// for循环创建墙壁    /// </summary>    void CreateWall()    {        for (int i = 0; i < width; i++)        {            for (int j = 0; j < height; j++)            {                GameObject.Instantiate(brick, new Vector3(i-5, j, 0), Quaternion.identity);            }        }    }}

下面是子弹的脚本

using UnityEngine;using System.Collections;public class Bullet : MonoBehaviour {    void Start () {        GameObject.Destroy(gameObject, 5);    }    void Update () {    }}