UGUI新手引导系统

相关链接：http://www.cnblogs.com/ybgame/p/3844315.html

效果图：

对于新手引导，主要分两种做法：需要使用shader的和不需要shader的，这里介绍的是后者

1.屏蔽点击

假如ImageA在ImageB前面，且ImageA完全覆盖ImageB，点击两者的重叠部分，ImageA会收到点击事件，而ImageB不会。对于UGUI来说，就是将一张灰色半透明图放到最前面了

2.目标UI高亮

这里有三种做法：

a.调整目标UI的Hierarchy层级
b.克隆目标UI，调整克隆UI的Hierarchy层级
c.使用Canvas + Graphic Raycaster 

这里本人选择的是第三种，因为第一种会破坏原有的的层级，第二种的话，如果目标UI本身没有绑定Mono脚本，则需要复制事件，不太好

需要注意的是，上面三种做法都是会增加drawcall的

这里给出核心脚本：

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using System;

public class GuideManager : MonoSingletion {

    private Transform maskTra;

    private string fileDir = "GuideFile/";
    private string nowCsvFile;
    private int nowIndex;
    private bool isFinish = false;//是否完成所有的新手引导
    private string[] nameArray;

    public void Init()
    {
        //读取进度
        string content = Resources.Load(fileDir + "GuideProgress").ToString();
        string[] temp = content.Split(',');
        nowCsvFile = temp[0];
        nowIndex = int.Parse(temp[1]);
        isFinish = bool.Parse(temp[2]);

        //读取需要高亮的组件的Hierarchy路径
        if (!isFinish)
        {
            string s = Resources.Load(fileDir + nowCsvFile).ToString();
            nameArray = s.Split(new string[] { "\r\n" }, System.StringSplitOptions.RemoveEmptyEntries);
        }
    }

    void OnDestroy()
    {
        //退出游戏后的处理
        Debug.Log("OnDestroy");
    }

    public void Next()
    {
        if (nowIndex < nameArray.Length)
        {
            ShowHightLight(nameArray[nowIndex]);
            nowIndex++;
        }
        else//加载下一个文件
        {
            maskTra.gameObject.SetActive(false);

            int index = int.Parse(nowCsvFile.Substring(nowCsvFile.Length - 1));
            index++;
            nowCsvFile = nowCsvFile.Substring(0, nowCsvFile.Length - 1) + index.ToString();
            string path = fileDir + nowCsvFile;

            string content = null;
            try
            {
                content = Resources.Load(path).ToString();
            }
            catch (Exception e)
            {
                isFinish = true;
                Debug.Log("finish");
                return;
            }
            nowIndex = 0;
            nameArray = content.Split(new string[] { "\r\n" }, System.StringSplitOptions.RemoveEmptyEntries);
        }
    }

    void ShowHightLight(string name, bool checkIsClone = true)
    {
        if(checkIsClone && name.Contains("/"))
        {
            name = name.Insert(name.IndexOf('/'), "(Clone)");
        }
        StartCoroutine(FindUI(name));
    }

    void CancelHightLight(GameObject go)
    {
        Destroy(go.GetComponent());
        Destroy(go.GetComponent());
        Next();
        EventTriggerListener.GetListener(go).onPointerClick -= CancelHightLight;
    }

    IEnumerator FindUI(string name)
    {
        //寻找目标
        GameObject go = UIManager.Instance.Find(name);
        while(go == null)
        {
            yield return new WaitForSeconds(0.1f);
            Debug.Log("wait");
            go = UIManager.Instance.Find(name);
        }

        //高亮
        maskTra = UIManager.Instance.Show("Mask").transform;
        maskTra.SetAsLastSibling();
        go.AddComponent().overrideSorting = true;
        go.AddComponent();

        //设置监听
        EventTriggerListener.GetListener(go).onPointerClick += CancelHightLight;
    }

}

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using System;

public class GuideManager : MonoSingletion {

    private Transform maskTra;

    private string fileDir = "GuideFile/";
    private string nowCsvFile;
    private int nowIndex;
    private bool isFinish = false;//是否完成所有的新手引导
    private string[] nameArray;    

    public void Init()
    {
        //读取进度
        string content = Resources.Load(fileDir + "GuideProgress").ToString();
        string[] temp = content.Split(',');
        nowCsvFile = temp[0];
        nowIndex = int.Parse(temp[1]);
        isFinish = bool.Parse(temp[2]);

        //读取需要高亮的组件的Hierarchy路径
        if (!isFinish)
        {
            string s = Resources.Load(fileDir + nowCsvFile).ToString();
            nameArray = s.Split(new string[] { "\r\n" }, System.StringSplitOptions.RemoveEmptyEntries);   
        } 
    }

    void OnDestroy()
    {
        //退出游戏后的处理
        Debug.Log("OnDestroy");
    }

    public void Next()
    {
        if (nowIndex < nameArray.Length)
        {
            ShowHightLight(nameArray[nowIndex]);
            nowIndex++;
        }
        else//加载下一个文件
        {
            maskTra.gameObject.SetActive(false);
     
            int index = int.Parse(nowCsvFile.Substring(nowCsvFile.Length - 1));
            index++;
            nowCsvFile = nowCsvFile.Substring(0, nowCsvFile.Length - 1) + index.ToString();
            string path = fileDir + nowCsvFile;

            string content = null;
            try
            {
                content = Resources.Load(path).ToString();
            }
            catch (Exception e) 
            {
                isFinish = true;
                Debug.Log("finish");
                return;
            }
            nowIndex = 0;
            nameArray = content.Split(new string[] { "\r\n" }, System.StringSplitOptions.RemoveEmptyEntries);  
        }
    }

    void ShowHightLight(string name, bool checkIsClone = true)
    {
        if(checkIsClone && name.Contains("/"))
        {
            name = name.Insert(name.IndexOf('/'), "(Clone)");
        }
        StartCoroutine(FindUI(name));
    }

    void CancelHightLight(GameObject go)
    {
        Destroy(go.GetComponent());
        Destroy(go.GetComponent());
        Next();
        EventTriggerListener.GetListener(go).onPointerClick -= CancelHightLight;
    }

    IEnumerator FindUI(string name)
    {
        //寻找目标
        GameObject go = UIManager.Instance.Find(name);
        while(go == null)
        {
            yield return new WaitForSeconds(0.1f);
            Debug.Log("wait");
            go = UIManager.Instance.Find(name);
        }
       
        //高亮
        maskTra = UIManager.Instance.Show("Mask").transform;
        maskTra.SetAsLastSibling();
        go.AddComponent().overrideSorting = true;
        go.AddComponent();

        //设置监听
        EventTriggerListener.GetListener(go).onPointerClick += CancelHightLight;
    }

}

3.目标UI的查找

首先，我们需要记录一下目标UI有哪些，查找的话，就是找UI的Hierarchy路径。对此，本人做了一个小工具：

这是unitypackage：

http://pan.baidu.com/s/1beSlVC