quick-lua AssetsManager 热更新代码

网上关于热更新文章很多，我在官方例子及js的代码基础上做了移植

quick-lua版本 3.5

UpdateScene类

local UpdateScene = class("UpdateScene", cc.Scene)function UpdateScene:ctor()    endfunction UpdateScene:onExit()    if self.am_ then        self.am_:release()        self.am_ = nil    endendfunction UpdateScene:run()    self.layer_ = cc.Layer:create()    self:addChild(self.layer_)    local winSize = cc.Director:getInstance():getWinSize()    local lblProgress = cc.Label:createWithTTF("0%","fonts/fzy4.ttf",40)    lblProgress:setPosition(cc.p(winSize.width/2, winSize.height/2 + 50))    self.layer_:addChild(lblProgress)    self.storagePath_ = cc.FileUtils:getInstance():getWritablePath() .. "/".."game_assets"    self.am_ = cc.AssetsManagerEx:create("res/project.manifest", self.storagePath_)    self.am_:retain()    if self.am_:getLocalManifest():isLoaded() then        local localManifest = self.am_:getLocalManifest()        print(localManifest:getVersion())    end    local failCount = 0    if not self.am_:getLocalManifest():isLoaded() then        print("Fail to update assets, step skipped.")        self:startGame()    else        local function onUpdateEvent(event)            local eventCode = event:getEventCode()            if eventCode == cc.EventAssetsManagerEx.EventCode.ERROR_NO_LOCAL_MANIFEST then                print("No local manifest file found, skip assets update.")                self:startGame()            elseif eventCode == cc.EventAssetsManagerEx.EventCode.NEW_VERSION_FOUND then            elseif eventCode == cc.EventAssetsManagerEx.EventCode.UPDATE_PROGRESSION then                local assetId = event:getAssetId()                local percent = event:getPercent()                local percentByFile = event:getPercentByFile()                local strInfo = ""                if assetId == cc.AssetsManagerExStatic.VERSION_ID then                    strInfo = string.format("Version file: %d%%", percent)                elseif assetId == cc.AssetsManagerExStatic.MANIFEST_ID then                    strInfo = string.format("Manifest file: %d%%", percent)                else                    strInfo = string.format("%d%%", percent)                end                lblProgress:setString(strInfo)            elseif eventCode == cc.EventAssetsManagerEx.EventCode.ERROR_DOWNLOAD_MANIFEST or                eventCode == cc.EventAssetsManagerEx.EventCode.ERROR_PARSE_MANIFEST then                print("Fail to download manifest file, update skipped.")                self:startGame()            elseif eventCode == cc.EventAssetsManagerEx.EventCode.ALREADY_UP_TO_DATE or                eventCode == cc.EventAssetsManagerEx.EventCode.UPDATE_FINISHED then                print("Update finished.")                self:startGame()            elseif eventCode == cc.EventAssetsManagerEx.EventCode.UPDATE_FAILED then                print("Update failed. ", event:getMessage())                failCount = failCount + 1                if (failCount < 5) then                    that.am_:downloadFailedAssets()                else                    print("Reach maximum fail count, exit update process")                    failCount = 0                    self:startGame()                end            elseif eventCode == cc.EventAssetsManagerEx.EventCode.ERROR_UPDATING then                print("Asset ", event:getAssetId(), ", ", event:getMessage())                self:startGame()            elseif eventCode == cc.EventAssetsManagerEx.EventCode.ERROR_DECOMPRESS then                print(event:getMessage())                self:startGame()            end        end        local listener = cc.EventListenerAssetsManagerEx:create(self.am_, onUpdateEvent)        cc.Director:getInstance():getEventDispatcher():addEventListenerWithFixedPriority(listener, 1)        self.am_:update()    end    if cc.Director:getInstance():getRunningScene() then        cc.Director:getInstance():replaceScene(self)    else        cc.Director:getInstance():runWithScene(self)    endendfunction UpdateScene:startGame()    local searchPaths = cc.FileUtils:getInstance():getSearchPaths()    table.insert(searchPaths, 1, self.storagePath_.."/res")    table.insert(searchPaths, 1, self.storagePath_.."/src")    cc.FileUtils:getInstance():setSearchPaths(searchPaths)       require("app.MyApp").new():run()endreturn UpdateScene

启动方法：

local UpdateScene = require "app.scenes.UpdateScene"local scene = UpdateScene.new()scene:run()

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