制作一个承载想法的东西（四）——更新场景

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前面说过场景管理器在初始化的时候就会进入一个默认的场景，它就是这个更新场景。更新场景就如其名，功能就是就检测版本更新，下载资源文件的。首先就不先看更新场景的逻辑了，一步一步来，既然要检测版本更新，就要有版本信息的文件，要下载新资源就要检测资源的是否是新，就要对应的一个记录文件md5信息的文件。

首先，主要更新的东西就是每个整场景的资源文件和一个一个的lua脚本文件，我没有将资源一个一个的细分为AssetBundle也没有将lua脚本打包成AssetBundle，甚至也没有加密lua脚本，是因为这仅仅只是我做一些自己想法的东西，很多东西就怎么方便怎么来了，如果后面有这样的需求就再修改就好了。所以这样就很简单明了了，资源就是一个一个的场景流文件和一个一个的lua脚本，将他们分别放在一个文件夹内，这样就很好的管理起来不混乱了。

资源场景的打包，都存放都一个叫Res的文件夹中，代表的就是资源文件，下面看一下把整场景打包成AssetBundle的工具类，存放的路径统一放在项目的根目录下的Res文件夹中，因为后面生成版本文件的时候就需要用到了。除了场景资源，以后所有的更新资源都放在这里，通过子文件夹分类

using UnityEditor;

public class Package
{

    [MenuItem("Package/BuildScenes")]
    public static void BuildSceneStream()
    {
        UnityEngine.Object[] scenes = Selection.GetFiltered(typeof(SceneAsset), SelectionMode.Assets);

        foreach (UnityEngine.Object o in scenes)
        {
            string path = AssetDatabase.GetAssetPath(o);
            if (!path.Contains(".unity")) continue;

            string sceneName = o.name + ".scene";

            BuildPipeline.BuildPlayer(new string[] { path }, "Res/Scenes/" + sceneName, BuildTarget.Android, BuildOptions.BuildAdditionalStreamedScenes);
        }
    }
}

using UnityEditor;

public class Package

{

[MenuItem("Package/BuildScenes")]

public static void BuildSceneStream()

{

UnityEngine.Object[] scenes = Selection.GetFiltered(typeof(SceneAsset), SelectionMode.Assets);

foreach (UnityEngine.Object o in scenes)

{

string path = AssetDatabase.GetAssetPath(o);

if (!path.Contains(".unity")) continue;

string sceneName = o.name + ".scene";

BuildPipeline.BuildPlayer(new string[] { path }, "Res/Scenes/" + sceneName, BuildTarget.Android, BuildOptions.BuildAdditionalStreamedScenes);

}

好了，资源文件已经准备好了，现在还需要准备的就是lua文件了，lua'文件就比较简单了，因为它们已经规范的都放置再一个叫Src的文件夹中了

那么就可以开始生成我们的版本文件了和文件的md5信息了，这里通过使用python很方便去执行。首先就是将原来准备好的资源目录和脚本目录复制到该python脚本的路径下，先说说为什么复制，因为文件都是需要上传到服务器的，为了减少上传，可以做当前版本和未来版本对比，移除不需要更新的部分（我这里没做，嘻嘻）。然后就是遍历这两个文件夹的这些文件咯，计算md5值，保存成json文件咯。

import os
import json
import hashlib
import subprocess
import shutil


assetsDir = {
    "searchDir" : ["Src", "Res"],
    "ignorDir" : ["cocos", "obj","version"]
}

versionConfigFile = "version_info.json"  #版本信息的配置文件路径

projectManifestPath = "Version/project.json"    #由此脚本生成的project.manifest文件路径
versionConfigPath = "Version/version_info.json"    #由此脚本生成的project.manifest文件路径

copyRes = "../Res"  #原资源路径
copySrc = "../Assets/Src"  #原脚本路径
targetRes = "Res"  #复制到的资源路径
targetSrc = "Src" #复制到的脚本路径


class SearchFile:
    def __init__(self):
        self.fileList = []

        for k in assetsDir:
            if (k == "searchDir"):
                for searchdire in assetsDir[k]:                 
                    self.recursiveDir(searchdire)

    def recursiveDir(self, srcPath):
        ''' 递归指定目录下的所有文件'''
        dirList = []    #所有文件夹  

        files = os.listdir(srcPath) #返回指定目录下的所有文件，及目录（不含子目录）

        for f in files:         
            #目录的处理
            if (os.path.isdir(srcPath + '/' + f)):              
                if (f[0] == '.' or (f in assetsDir["ignorDir"])):
                    #排除隐藏文件夹和忽略的目录
                    pass
                else:
                    #添加非需要的文件夹                                  
                    dirList.append(f)

            #文件的处理
            elif (os.path.isfile(srcPath + '/' + f)):               
                self.fileList.append(srcPath + '/' + f) #添加文件

        #遍历所有子目录,并递归
        for dire in dirList:        
            #递归目录下的文件
            self.recursiveDir(srcPath + '/' + dire)

    def getAllFile(self):
        ''' get all file path'''
        return tuple(self.fileList)


def CalcMD5(filepath):
    """generate a md5 code by a file path"""
    with open(filepath,'rb') as f:
        md5obj = hashlib.md5()
        md5obj.update(f.read())
        return md5obj.hexdigest()


def getVersionInfo():
    '''get version config data'''
    configFile = open(versionConfigFile,"r")
    json_data = json.load(configFile)
    configFile.close()
    #json_data["version"] = json_data["version"])
    return json_data

def GenerateprojectManifestPath():
    searchfile = SearchFile()
    fileList = list(searchfile.getAllFile())
    project_str = {}
    project_str.update(getVersionInfo())
    dataDic = {}
    for f in fileList:      
        dataDic[f] = {"md5" : CalcMD5(f)}

    project_str.update({"assets":dataDic})
    json_str = json.dumps(project_str, sort_keys = True, indent = 2)

    fo = open(projectManifestPath,"w")  
    fo.write(json_str)  
    fo.close()

def CopyResToUpdate():
    if os.path.exists(targetRes):
        shutil.rmtree(targetRes)
    shutil.copytree(copyRes,targetRes)

def CopySrcToUpdate():
    if os.path.exists(targetSrc):
        shutil.rmtree(targetSrc)
    shutil.copytree(os.path.abspath(copySrc),os.path.abspath(targetSrc),ignore=_ignore_copy_files)

def _ignore_copy_files(path, content):
    to_ignore = []
    for file_ in content:
        if file_.endswith('.meta'):
            to_ignore.append(file_)
    return to_ignore


if __name__ == "__main__":
    CopyResToUpdate()
    CopySrcToUpdate()
    GenerateprojectManifestPath()
    shutil.copy(versionConfigFile,versionConfigPath)
    os.system('pause') #暂停程序

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import os

import json

import hashlib

import subprocess

import shutil

assetsDir = {

"searchDir" : ["Src", "Res"],

"ignorDir" : ["cocos", "obj","version"]

}

versionConfigFile = "version_info.json" #版本信息的配置文件路径

projectManifestPath = "Version/project.json" #由此脚本生成的project.manifest文件路径

versionConfigPath = "Version/version_info.json" #由此脚本生成的project.manifest文件路径

copyRes = "../Res" #原资源路径

copySrc = "../Assets/Src" #原脚本路径

targetRes = "Res" #复制到的资源路径

targetSrc = "Src" #复制到的脚本路径

class SearchFile:

def __init__(self):

self.fileList = []

for k in assetsDir:

if (k == "searchDir"):

for searchdire in assetsDir[k]:

self.recursiveDir(searchdire)

def recursiveDir(self, srcPath):

''' 递归指定目录下的所有文件'''

dirList = [] #所有文件夹

files = os.listdir(srcPath) #返回指定目录下的所有文件，及目录（不含子目录）

for f in files:

#目录的处理

if (os.path.isdir(srcPath + '/' + f)):

if (f[0] == '.' or (f in assetsDir["ignorDir"])):

#排除隐藏文件夹和忽略的目录

pass

else:

#添加非需要的文件夹

dirList.append(f)

#文件的处理

elif (os.path.isfile(srcPath + '/' + f)):

self.fileList.append(srcPath + '/' + f) #添加文件

#遍历所有子目录,并递归

for dire in dirList:

#递归目录下的文件

self.recursiveDir(srcPath + '/' + dire)

def getAllFile(self):

''' get all file path'''

return tuple(self.fileList)

def CalcMD5(filepath):

"""generate a md5 code by a file path"""

with open(filepath,'rb') as f:

md5obj = hashlib.md5()

md5obj.update(f.read())

return md5obj.hexdigest()

def getVersionInfo():

'''get version config data'''

configFile = open(versionConfigFile,"r")

json_data = json.load(configFile)

configFile.close()

#json_data["version"] = json_data["version"])

return json_data

def GenerateprojectManifestPath():

searchfile = SearchFile()

fileList = list(searchfile.getAllFile())

project_str = {}

project_str.update(getVersionInfo())

dataDic = {}

for f in fileList:

dataDic[f] = {"md5" : CalcMD5(f)}

project_str.update({"assets":dataDic})

json_str = json.dumps(project_str, sort_keys = True, indent = 2)

fo = open(projectManifestPath,"w")

fo.write(json_str)

fo.close()

def CopyResToUpdate():

if os.path.exists(targetRes):

shutil.rmtree(targetRes)

shutil.copytree(copyRes,targetRes)

def CopySrcToUpdate():

if os.path.exists(targetSrc):

shutil.rmtree(targetSrc)

shutil.copytree(os.path.abspath(copySrc),os.path.abspath(targetSrc),ignore=_ignore_copy_files)

def _ignore_copy_files(path, content):

to_ignore = []

for file_ in content:

if file_.endswith('.meta'):

to_ignore.append(file_)

return to_ignore

if __name__ == "__main__":

CopyResToUpdate()

CopySrcToUpdate()

GenerateprojectManifestPath()

shutil.copy(versionConfigFile,versionConfigPath)

os.system('pause') #暂停程序

好了，所有东西都准备好了，可以来去看看更新场景UpdateScene.lua了。很简单明了，主要在初始化的时候，获取了进度条和显示信息的文本UI，注册事件以更新UI信息，最后驱动UpdateController.lua的运行，主要更新逻辑在那里。

local SceneBase = require("Base.SceneBase")
local UpdateScene = class("Scene.UpdateScene",SceneBase)
local CtrlConfig = requireCur("CtrlConfig")


function UpdateScene:Main()
    ControllerManager:GetInstance():Init(CtrlConfig)
    self.updateCtrl = ControllerManager:GetInstance():Create(CtrlConfig.UpdateController)
end

function UpdateScene:Dispose()
    ControllerManager:GetInstance():Dispose()
end

return UpdateScene

local SceneBase = require("Base.SceneBase")

local UpdateScene = class("Scene.UpdateScene",SceneBase)

local CtrlConfig = requireCur("CtrlConfig")

function UpdateScene:Main()

ControllerManager:GetInstance():Init(CtrlConfig)

self.updateCtrl = ControllerManager:GetInstance():Create(CtrlConfig.UpdateController)

end

function UpdateScene:Dispose()

ControllerManager:GetInstance():Dispose()

end

return UpdateScene

local ViewBase = require("Base.ViewBase")
local UpdateView = class("Update.UpdateView",ViewBase)
local Events = requireCur("EventsConfig")
local Image = UnityEngine.UI.Image
local Text = UnityEngine.UI.Text

function UpdateView:Init(data)
    --获取场景根物体物体
    local canvas = self:GetChildByName("Canvas")
    local loading = self:GetChildByName("Loading",canvas)
    self.progresssSlider = self:GetChildByName("Mask",loading):GetComponent(typeof(Image))
    self.messageText = self:GetChildByName("Text",canvas):GetComponent(typeof(Text))
    self.progressText = self:GetChildByName("Text",loading):GetComponent(typeof(Text))
    self.quitBtn = self:GetChildByName("QuitBtn",canvas)

    self.updateData = data

    registTrigger(self.quitBtn.gameObject,Const.Triggers.OnPointerClick,handler(self,self.Quit))
    self.updateMessageHanlder = registEvent(Events.UpdateViewUpdateMessage,handler(self,self.UpdateMessage))
    self.showQuitBtn = registEvent(Events.ShowQuitBtn,handler(self,self.ShowQuitBtn))
end

function UpdateView:UpdateMessage()
    self.messageText.text = self.updateData.updateTips
    self.progresssSlider.fillAmount = self.updateData.updateProgress
    self.progressText.text = (self.updateData.updateProgress - self.updateData.updateProgress % 0.01)*100 .. "%"
end

function UpdateView:ShowQuitBtn()
    self.quitBtn.gameObject:SetActive(true)
end

function UpdateView:Quit()
    UnityEngine.Application.Quit()
end

function UpdateView:Dispose()
    removeEvent(Events.UpdateViewUpdateMessage,self.updateMessageHanlder)
    removeEvent(Events.ShowQuitBtn,self.showQuitBtn)
end

return UpdateView

local ViewBase = require("Base.ViewBase")

local UpdateView = class("Update.UpdateView",ViewBase)

local Events = requireCur("EventsConfig")

local Image = UnityEngine.UI.Image

local Text = UnityEngine.UI.Text

function UpdateView:Init(data)

--获取场景根物体物体

local canvas = self:GetChildByName("Canvas")

local loading = self:GetChildByName("Loading",canvas)

self.progresssSlider = self:GetChildByName("Mask",loading):GetComponent(typeof(Image))

self.messageText = self:GetChildByName("Text",canvas):GetComponent(typeof(Text))

self.progressText = self:GetChildByName("Text",loading):GetComponent(typeof(Text))

self.quitBtn = self:GetChildByName("QuitBtn",canvas)

self.updateData = data

registTrigger(self.quitBtn.gameObject,Const.Triggers.OnPointerClick,handler(self,self.Quit))

self.updateMessageHanlder = registEvent(Events.UpdateViewUpdateMessage,handler(self,self.UpdateMessage))

self.showQuitBtn = registEvent(Events.ShowQuitBtn,handler(self,self.ShowQuitBtn))

end

function UpdateView:UpdateMessage()

self.messageText.text = self.updateData.updateTips

self.progresssSlider.fillAmount = self.updateData.updateProgress

self.progressText.text = (self.updateData.updateProgress - self.updateData.updateProgress % 0.01)*100 .. "%"

end

function UpdateView:ShowQuitBtn()

self.quitBtn.gameObject:SetActive(true)

end

function UpdateView:Quit()

UnityEngine.Application.Quit()

end

function UpdateView:Dispose()

removeEvent(Events.UpdateViewUpdateMessage,self.updateMessageHanlder)

removeEvent(Events.ShowQuitBtn,self.showQuitBtn)

end

return UpdateView

local UpdateData = class("Update.UpdateData",DataBase)
local Events = requireCur("EventsConfig")

function UpdateData:ctor()
    --视图数据
    self.updateTips = ''
    self.updateProgress = 0
end

function UpdateData:ChangeTips(tips)
    self.updateTips = tips
    callEvent(Events.UpdateViewUpdateMessage)
end

function UpdateData:ChangeProgress(val)
    self.updateProgress = val
    callEvent(Events.UpdateViewUpdateMessage)
end

return UpdateData

local UpdateData = class("Update.UpdateData",DataBase)

local Events = requireCur("EventsConfig")

function UpdateData:ctor()

--视图数据

self.updateTips = ''

self.updateProgress = 0

end

function UpdateData:ChangeTips(tips)

self.updateTips = tips

callEvent(Events.UpdateViewUpdateMessage)

end

function UpdateData:ChangeProgress(val)

self.updateProgress = val

callEvent(Events.UpdateViewUpdateMessage)

end

return UpdateData

下面就来看看这个最重要的更新逻辑了，首先携程调用检测版本信息，对比通过网络请求远程额版本文件信息和本地的版本文件信息，这个版本文件和同样记录md5信息的文件在打包的时候会生成一次最新的存放在Resources中，若在更新目录中找不到它们就会去Resources中去获取。如果版本信息是大版本更新，则打开官方去下载新包或内置下载也行，如果是小版本更新，则开启检测md5文件信息。同样的，是开启一个携程，对比远程下载的md5信息文件和本地的md5信息文件，遍历md5信息，新加的和md5对应不上的，都添加到下载，通过计数器来判断下载是否完成。在下载完成后，显示一个退出的按钮，提示退出应用后再进，因为如果更新了一些管理类的话不重启是不会用到最新的，暂时没想到自动重启的办法。这里有一个下载管理器，其实也是通过携程运用WWW去下载文件的，获取到byte数组数据通过工具类保存文件，也没什么好展示的了。

local ControllerBase = require("Base.ControllerBase")
local UpdateController = class("Update.UpdateController",ControllerBase)
local UpdateView = requireCur("UpdateView")
local UpdateData = requireCur("UpdateData")
local Events = requireCur("EventsConfig")
local Resources = UnityEngine.Resources
local TextAsset = UnityEngine.TextAsset
local cjson = require "cjson"

function UpdateController:Init()
    self.updateData = UpdateData.New()--创建交互数据
    self.view = UpdateView.New(self.updateData)  --创建视图

    self.remoteVersionByte = nil
    self.remoteProjectByte = nil
    self.allDownloadNum = 0
    self.remainDownloadNum = 0

    self.updateData:ChangeTips("正在检测版本信息")
    coroutine.start(self.CheckVersion,self)
end

function UpdateController:CheckVersion()
    local localVersionJson = self:LodaLocalVersion()
    local localVersion = cjson.decode(localVersionJson)
    local localVersionData = string.split(localVersion.version,'.')
    local www = UnityEngine.WWW(Const.DownLoadUrl .. 'Version/' .. Const.VersionFile)
    coroutine.www(www)  --等待www响应
    self.remoteVersionByte = www.bytes
    local remoteVersionJson = tolua.tolstring(www.bytes)
    local remoteVersion = cjson.decode(remoteVersionJson)
    local remoteVersionData = string.split(remoteVersion.version,'.')

    if tonumber(remoteVersionData[1]) > tonumber(localVersionData[1]) then
        --大版本更新  这里打开官网
        UnityEngine.Application.OpenURL(Const.HomeUrl)
    elseif tonumber(remoteVersionData[2]) > tonumber(localVersionData[2])then
        --小更新  下载md5文件对比下载资源
        self.updateData:ChangeTips("正在下载更新文件")
        coroutine.start(self.CheckProject,self)
    else
        --无需更新
        self:EndUpdate()
    end
end

function UpdateController:LodaLocalVersion()
    local filePath = PathManager:GetInstance():GetUpdatePath() .. "/" .. Const.VersionFile
    local f = io.open(filePath,"r")
    local str = ''
    if f == nil then
        --通过Resource加载
        local textAsset = Resources.Load("Version/" .. Const.VersionFileName,typeof(TextAsset))
        str = textAsset.text
    else
        str = f:read('*a')
        f:close()
    end

    return str
end

function UpdateController:CheckProject()
    local localProjectJson = self:LoadLocalProject()
    local localProject = cjson.decode(localProjectJson)
    local localProjectData = localProject.assets

    local www = UnityEngine.WWW(Const.DownLoadUrl .. 'Version/' .. Const.ProjectFile)
    coroutine.www(www)
    self.remoteProjectByte = www.bytes
    local remoteProjectJson = tolua.tolstring(www.bytes)
    local remoteProject = cjson.decode(remoteProjectJson)
    local remoteProjectData = remoteProject.assets

    --开始对比 然后构建下载队列 统计等待所有下载完成调用完成下载
    for k,v in pairs(remoteProjectData) do
        if localProjectData[k] == nil or localProjectData[k].md5 ~= v.md5 then
            self.allDownloadNum = self.allDownloadNum + 1
            self.remainDownloadNum = self.remainDownloadNum + 1
            DownloadManager:GetInstance():AddDownload(Const.DownLoadUrl .. k,PathManager:GetInstance():GetUpdatePath() .. '/' .. k,handler(self,self.OnOneDownloadFinish))
        end
    end
end

function UpdateController:LoadLocalProject()
    local filePath = PathManager:GetInstance():GetUpdatePath() .. "/" .. Const.ProjectFile
    local f = io.open(filePath,"r")
    local str = ''
    if f == nil then
        --通过Resource加载
        local textAsset = Resources.Load("Version/" .. Const.ProjectFileName,typeof(TextAsset))
        str = textAsset.text
    else
        str = f:read('*a')
        f:close()
    end

    return str
end

function UpdateController:OnOneDownloadFinish()
    self.remainDownloadNum = self.remainDownloadNum - 1
    self.updateData:ChangeProgress(1 - self.remainDownloadNum / self.allDownloadNum)
    if self.remainDownloadNum == 0 then
        --保存json文件
        UtilityManager:GetInstance():SaveDownLoadData(PathManager:GetInstance():GetUpdatePath() .. "/" .. Const.VersionFile,self.remoteVersionByte)
        UtilityManager:GetInstance():SaveDownLoadData(PathManager:GetInstance():GetUpdatePath() .. "/" .. Const.ProjectFile,self.remoteProjectByte)
        self.updateData:ChangeTips("更新完成，请退出应用再进")
        callEvent(Events.ShowQuitBtn)
    end
end

function UpdateController:EndUpdate()
    MySceneManager:GetInstance():LoadScene("Hall")
end

function UpdateController:Dispose()
    self.view:Dispose()
end

return UpdateController

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local ControllerBase = require("Base.ControllerBase")

local UpdateController = class("Update.UpdateController",ControllerBase)

local UpdateView = requireCur("UpdateView")

local UpdateData = requireCur("UpdateData")

local Events = requireCur("EventsConfig")

local Resources = UnityEngine.Resources

local TextAsset = UnityEngine.TextAsset

local cjson = require "cjson"

function UpdateController:Init()

self.updateData = UpdateData.New()--创建交互数据

self.view = UpdateView.New(self.updateData) --创建视图

self.remoteVersionByte = nil

self.remoteProjectByte = nil

self.allDownloadNum = 0

self.remainDownloadNum = 0

self.updateData:ChangeTips("正在检测版本信息")

coroutine.start(self.CheckVersion,self)

end

function UpdateController:CheckVersion()

local localVersionJson = self:LodaLocalVersion()

local localVersion = cjson.decode(localVersionJson)

local localVersionData = string.split(localVersion.version,'.')

local www = UnityEngine.WWW(Const.DownLoadUrl .. 'Version/' .. Const.VersionFile)

coroutine.www(www) --等待www响应

self.remoteVersionByte = www.bytes

local remoteVersionJson = tolua.tolstring(www.bytes)

local remoteVersion = cjson.decode(remoteVersionJson)

local remoteVersionData = string.split(remoteVersion.version,'.')

if tonumber(remoteVersionData[1]) > tonumber(localVersionData[1]) then

--大版本更新这里打开官网

UnityEngine.Application.OpenURL(Const.HomeUrl)

elseif tonumber(remoteVersionData[2]) > tonumber(localVersionData[2])then

--小更新下载md5文件对比下载资源

self.updateData:ChangeTips("正在下载更新文件")

coroutine.start(self.CheckProject,self)

else

--无需更新

self:EndUpdate()

end

function UpdateController:LodaLocalVersion()

local filePath = PathManager:GetInstance():GetUpdatePath() .. "/" .. Const.VersionFile

local f = io.open(filePath,"r")

local str = ''

if f == nil then

--通过Resource加载

local textAsset = Resources.Load("Version/" .. Const.VersionFileName,typeof(TextAsset))

str = textAsset.text

else

str = f:read('*a')

f:close()

end

return str

end

function UpdateController:CheckProject()

local localProjectJson = self:LoadLocalProject()

local localProject = cjson.decode(localProjectJson)

local localProjectData = localProject.assets

local www = UnityEngine.WWW(Const.DownLoadUrl .. 'Version/' .. Const.ProjectFile)

coroutine.www(www)

self.remoteProjectByte = www.bytes

local remoteProjectJson = tolua.tolstring(www.bytes)

local remoteProject = cjson.decode(remoteProjectJson)

local remoteProjectData = remoteProject.assets

--开始对比然后构建下载队列统计等待所有下载完成调用完成下载

for k,v in pairs(remoteProjectData) do

if localProjectData[k] == nil or localProjectData[k].md5 ~= v.md5 then

self.allDownloadNum = self.allDownloadNum + 1

self.remainDownloadNum = self.remainDownloadNum + 1

DownloadManager:GetInstance():AddDownload(Const.DownLoadUrl .. k,PathManager:GetInstance():GetUpdatePath() .. '/' .. k,handler(self,self.OnOneDownloadFinish))

end

function UpdateController:LoadLocalProject()

local filePath = PathManager:GetInstance():GetUpdatePath() .. "/" .. Const.ProjectFile

local f = io.open(filePath,"r")

local str = ''

if f == nil then

--通过Resource加载

local textAsset = Resources.Load("Version/" .. Const.ProjectFileName,typeof(TextAsset))

str = textAsset.text

else

str = f:read('*a')

f:close()

end

return str

end

function UpdateController:OnOneDownloadFinish()

self.remainDownloadNum = self.remainDownloadNum - 1

self.updateData:ChangeProgress(1 - self.remainDownloadNum / self.allDownloadNum)

if self.remainDownloadNum == 0 then

--保存json文件

UtilityManager:GetInstance():SaveDownLoadData(PathManager:GetInstance():GetUpdatePath() .. "/" .. Const.VersionFile,self.remoteVersionByte)

UtilityManager:GetInstance():SaveDownLoadData(PathManager:GetInstance():GetUpdatePath() .. "/" .. Const.ProjectFile,self.remoteProjectByte)

self.updateData:ChangeTips("更新完成，请退出应用再进")

callEvent(Events.ShowQuitBtn)

end

function UpdateController:EndUpdate()

MySceneManager:GetInstance():LoadScene("Hall")

end

function UpdateController:Dispose()

self.view:Dispose()

end

return UpdateController

对了，lua文件下载下来了，怎么知道在lua脚本中require的是从最新的下载目录中的呢。所以需要提供一个资源加载器，ToLua中已经有了，在new一个LuaState之前new一个LuaResLoader替代LuaFileUtils，这里重写了加载的方法，是优先读取下载目录的文件还是根据SerachPath来(base)都是可以根据不同情况自己决定的。而LuaState初始化的时候会向lua环境中添加一个LuaLoader，而这个Loader会调用LuaResLoader的ReadFile方法，所以require也是用的同一个加载方式，管好自己的加载顺序就好了。

public override byte[] ReadFile(string fileName)
{
#if !UNITY_EDITOR
    byte[] buffer = ReadDownLoadFile(fileName);

    if (buffer == null)
    {
        buffer = ReadResourceFile(fileName);
    }        
        
    if (buffer == null)
    {
        buffer = base.ReadFile(fileName);
    }        
#else
    byte[] buffer;
    if (Main.Instance.useRemoteRes)
    {
        buffer = ReadDownLoadFile(fileName);

        if (buffer == null)
        {
            buffer = ReadResourceFile(fileName);
        }

        if (buffer == null)
        {
            buffer = base.ReadFile(fileName);
        }
    }
    else
    {
        buffer = base.ReadFile(fileName);

        if (buffer == null)
        {
            buffer = ReadResourceFile(fileName);
        }

        if (buffer == null)
        {
            buffer = ReadDownLoadFile(fileName);
        }
    }
#endif

    return buffer;
}

public override byte[] ReadFile(string fileName)

{

#if !UNITY_EDITOR

byte[] buffer = ReadDownLoadFile(fileName);

if (buffer == null)

{

buffer = ReadResourceFile(fileName);

}

if (buffer == null)

{

buffer = base.ReadFile(fileName);

}

#else

byte[] buffer;

if (Main.Instance.useRemoteRes)

{

buffer = ReadDownLoadFile(fileName);

if (buffer == null)

{

buffer = ReadResourceFile(fileName);

}

if (buffer == null)

{

buffer = base.ReadFile(fileName);

}

else

{

buffer = base.ReadFile(fileName);

if (buffer == null)

{

buffer = ReadResourceFile(fileName);

}

if (buffer == null)

{

buffer = ReadDownLoadFile(fileName);

}

#endif

return buffer;

}

static void AddLuaLoader(IntPtr L)
{
    LuaDLL.lua_getglobal(L, "package");
    LuaDLL.lua_getfield(L, -1, "loaders");
    LuaDLL.tolua_pushcfunction(L, Loader);

    for (int i = LuaDLL.lua_objlen(L, -2) + 1; i > 2; i--)
    {
        LuaDLL.lua_rawgeti(L, -2, i - 1);
        LuaDLL.lua_rawseti(L, -3, i);
    }

    LuaDLL.lua_rawseti(L, -2, 2);
    LuaDLL.lua_pop(L, 2);
}

static void AddLuaLoader(IntPtr L)

{

LuaDLL.lua_getglobal(L, "package");

LuaDLL.lua_getfield(L, -1, "loaders");

LuaDLL.tolua_pushcfunction(L, Loader);

for (int i = LuaDLL.lua_objlen(L, -2) + 1; i > 2; i--)

{

LuaDLL.lua_rawgeti(L, -2, i - 1);

LuaDLL.lua_rawseti(L, -3, i);

}

LuaDLL.lua_rawseti(L, -2, 2);

LuaDLL.lua_pop(L, 2);

}

static int Loader(IntPtr L)
{
    try
    {
        string fileName = LuaDLL.lua_tostring(L, 1);
        fileName = fileName.Replace(".", "/");
        byte[] buffer = LuaFileUtils.Instance.ReadFile(fileName);

        if (buffer == null)
        {
            string error = LuaFileUtils.Instance.FindFileError(fileName);
            LuaDLL.lua_pushstring(L, error);
            return 1;
        }

        if (LuaConst.openLuaDebugger)
        {
            fileName = LuaFileUtils.Instance.FindFile(fileName);
        }                

        if (LuaDLL.luaL_loadbuffer(L, buffer, buffer.Length, "@"+ fileName) != 0)
        {
            string err = LuaDLL.lua_tostring(L, -1);
            throw new LuaException(err, LuaException.GetLastError());
        }

        return 1;
    }
    catch (Exception e)
    {
        return LuaDLL.toluaL_exception(L, e);
    }
}

static int Loader(IntPtr L)

{

try

{

string fileName = LuaDLL.lua_tostring(L, 1);

fileName = fileName.Replace(".", "/");

byte[] buffer = LuaFileUtils.Instance.ReadFile(fileName);

if (buffer == null)

{

string error = LuaFileUtils.Instance.FindFileError(fileName);

LuaDLL.lua_pushstring(L, error);

return 1;

}

if (LuaConst.openLuaDebugger)

{

fileName = LuaFileUtils.Instance.FindFile(fileName);

}

if (LuaDLL.luaL_loadbuffer(L, buffer, buffer.Length, "@"+ fileName) != 0)

{

string err = LuaDLL.lua_tostring(L, -1);

throw new LuaException(err, LuaException.GetLastError());

}

return 1;

}

catch (Exception e)

{

return LuaDLL.toluaL_exception(L, e);

}

好了，这样更新场景就完成了，在需要更新的时候，将场景资源打包，修改版本信息，运行Update.py，生成好版本文件和md5信息文件，然后将Res和Src目录文件上传到服务器中，再将Version下的版本信息文件上传，这样更新步骤就完成了。

再这里用到的registEvent、callEvent、removeEvent和UtilityManager都可以在上一篇中看到，这里就不再重复内容了。

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