Unity中关于射线的运用——第03节 射线的实际运用

　　　　1.设计思路：界面会在某个区域随机生成球形，并且当我们点击鼠标右键并且点中球形并且鼠标抬起，则会销毁球形。

　　　　2.创建球形脚本：

#region 模块信息
// **********************************************************************
// Copyright (C) 2018 The company name
//
// 文件名(File Name):             Test_SceneController.cs
// 作者(Author):                  Dean1874
// 创建时间(CreateTime):          2018-03-19 17:35:20
// 修改者列表(modifier):
// 模块描述(Module description):  Test级别的场景控制器
// 
// **********************************************************************
#endregion

using System;
using UnityEngine;

public class Test_SceneController : MonoBehaviour 
{
    /// <summary>
    /// 创建球形的区域
    /// </summary>
    private Transform transCreateSphereArea;

    /// <summary>
    /// 球形的父物体
    /// </summary>
    private Transform sphereParent;

    /// <summary>
    /// 球形预设
    /// </summary>
    private GameObject m_SpherePrefab;

    /// <summary>
    /// 球形的上限值
    /// </summary>
    private int m_MaxCount = 10;

    /// <summary>
    /// 下次克隆时间
    /// </summary>
    private float m_NextCloneTime = 0.0f;

    /// <summary>
    /// 当前箱子数量
    /// </summary>
    private int m_CurrentCount = 0;

    private void Awake()
    {
        transCreateSphereArea = GameObject.Find("CreateSphereArea").GetComponent<Transform>();
        sphereParent = GameObject.Find("SphereAll").GetComponent<Transform>();
    }

    private void Start()
    {
        m_SpherePrefab = Resources.Load<GameObject>("Test/Sphere_00");
        Debug.Log("m_SpherePrefab = " + m_SpherePrefab);
    }

    private void Update()
    {
        if (m_CurrentCount < m_MaxCount)
        {
            if (Time.time > m_NextCloneTime)
            {
                //克隆
                Clone();
            }
        }
    }

    private void Clone()
    {
        m_NextCloneTime = Time.time + 0.5f;
        GameObject objClone = Instantiate(m_SpherePrefab);
        objClone.transform.SetParent(sphereParent, false);
        objClone.transform.position = transCreateSphereArea.transform.TransformPoint(new Vector3(UnityEngine.Random.Range(-0.5f, 0.5f), 0, UnityEngine.Random.Range(-0.5f, 0.5f)));
        Test_BoxController test_BoxController = objClone.GetComponent<Test_BoxController>();
        if (test_BoxController != null)
        {
            test_BoxController.OnHit = SphereHit;
        }
        m_CurrentCount += 1;
    }

    private void SphereHit(GameObject obj)
    {
        m_CurrentCount -= 1;
        Destroy(obj);
    }
}

　　　　3.挂载在球形上的脚本

#region 模块信息
// **********************************************************************
// Copyright (C) 2018 The company name
//
// 文件名(File Name):             Test_BoxController.cs
// 作者(Author):                  Dean1874
// 创建时间(CreateTime):          2018-03-18 16:14:07
// 修改者列表(modifier):          Dean1874
// 模块描述(Module description):  测试移动脚本
// 
// **********************************************************************
#endregion

using UnityEngine;
using System;

public class Test_BoxController : MonoBehaviour
{
    public Action<GameObject> OnHit;

    public void Hit()
    {
        if (OnHit != null)
        {
            OnHit(gameObject);
        }
    }
}

　　　　4.角色控制脚本（部分）

 #region 射线的运用
        if (Input.GetMouseButtonUp(1))
        {
            Ray ray = m_RoleCamera.ScreenPointToRay(Input.mousePosition);
            RaycastHit hit;
            if (Physics.Raycast(ray, out hit, Mathf.Infinity, 1 << LayerMask.NameToLayer("Item")))
            {
                //Destroy(hit.collider.gameObject);
                Test_BoxController boxController = hit.collider.GetComponent<Test_BoxController>();
                if (boxController != null)
                {
                    boxController.Hit();
                }
                //Debug.Log(hit.collider.name);
            }
        }

        #endregion