打墙砖（射线）

问题.png

using UnityEngine;
using System.Collections;

public class Brick : MonoBehaviour {

    public GameObject brickPrefab;
    public GameObject bulletPrefab;
    void Start () {
        //6*10
        //行距
        float row =1;
        //列距
        float column=1;
        //6行
        for (int i = 0; i < 6; i++) {
            //10列
            for (int j = 0; j < 10; j++) {
                Vector3 brickPs = new Vector3 (-4.5f + j * row, 0.5f + i * column, 3);
                Instantiate(brickPrefab,brickPs,Quaternion.identity);

            }
        }
    }
    
    // Update is called once per frame
    void Update ()
    {
        
    //发射子弹
        if(Input.GetMouseButtonDown(0))
        {           
            RaycastHit hit;
            if (Physics.Raycast(Camera.main.ScreenPointToRay(Input.mousePosition),out hit))
            {
                if (hit.collider.tag=="brick") 
                {
                    GameObject bullet = Instantiate (bulletPrefab, Camera.main.transform.position, Quaternion.identity)as GameObject;
                    Vector3 dir = hit.point - Camera.main.transform.position;
                    dir.Normalize();
                    bullet.GetComponent<Rigidbody>().velocity = dir * 200;
                    Destroy (bullet, 3);
                }
            }
        }

    }
}

整体界面.png 碰撞检测.png

操作步骤：
*************在场景中新建Plane，Cube，Sphere；
*************把brick和bullet设置为预制体，并分别为其添加Rigidbody（默认值）；
*************把上述代码赋给Plane（也可新建一空物体，赋到空物体上），把两个预制体放置到对应的位置。

代码赋值.png

如果想让墙体在被打落之后消失，只需要将以下代码赋给brick(预制体)上即可。代码如下：

using UnityEngine;
using System.Collections;

public class xiaoshiSript : MonoBehaviour {

    public bool isOver = false;
    void Start () {
    
    }
    
    // Update is called once per frame
    void Update () {
        if (transform.position.y < 0 ) {
            Destroy (gameObject,1);//一秒后消失
        }
    }
}

*************注意：把bullet（子弹）的碰撞检测类型改为Continuous Dynamic，否则会射穿墙体。