Cocos2d-x 3.2 Lua example AssetsManagerTest (Resource Manager)

Cocos2d-x 3.2 Lua example AssetsManagerTest (Resource Manager)
Cocos2d-x 3.2 Lua example AssetsManagerTest (Resource Manager)
This blog introduces an example of the use of AssetsManager in Lua, a class provided by Cocos2d-x. The effect is as follows:



The example given by the Cocos2d-x is AssetsManagerTest, three menu items will be found when entering: enterresetupdateenter is into the scene, reset is to delete the local version, reset, update is to update the resource file.

I use LDT to open the lua-tests Test Project:


Find the AssetsManagerTest directory under the src directory and view the following code (I have commented on it): >>> AsetsManagerModule. lua

-- [[Resource Manager Module] -- local AssetManagerModule ={} -- [[newScene] -- function AssetManagerModule. newScene (backfunc) -- Obtain the screen size. local winSize = cc. director: getInstance (): getWinSize () -- create a new scenario: local newScene = cc. scene: create () -- create a new layer local layer = cc. layer: create () -- updates the local function backToUpdate () local scene = backfunc () if scene ~ = Nil then cc. director: getInstance (): replaceScene (scene) end -- create a rollback menu cc. menuItemFont: setFontName ("Arial") cc. menuItemFont: setFontSize (24) local backMenuItem = cc. menuItemFont: create ("Back") -- placed in the approximate position backMenuItem: setPosition (cc. p (VisibleRect: rightBottom (). x-50, VisibleRect: rightBottom (). y + 25) -- register the listener method backMenuItem: registerScriptTapHandler (backToUpdate) -- create the menu local backMenu = cc. menu: create () backMenu: setPosition (0, 0) backMenu: addChild (backMenuItem) layer: addChild (backMenu, 6) -- create the label local helloLabel = cc. label: createWithTTF ("Hello World", s_arialPath, 38) helloLabel: setAnchorPoint (cc. p (0.5, 0.5) -- helloLabel: setPosition (cc. p (winSize. width/2, winSize. height-40) layer: addChild (helloLabel, 5) -- creates an sprite. Here is a background image local sprite = cc. sprite: create ("Images/background.png") sprite: setAnchorPoint (cc. p (0.5, 0.5) -- The Anchor center sprite: setPosition (cc. p (winSize. width/2, winSize. height/2) layer: addChild (sprite, 0) newScene: addChild (layer) -- add to scenario cc. director: getInstance (): replaceScene (newScene) -- replace scene end -- return Module return AssetManagerModule

>>> AssetsManagerTest. lua

-- Obtain the target platform local targetPlatform = cc. application: getInstance (): getTargetPlatform () local lineSpace = 40 -- line spacing local itemTagBasic = 1000 local menuItemNames = {"enter", "reset", "update ",} -- Obtain the screen size. local winSize = cc. director: getInstance (): getWinSize () -- Update layer local function updateLayer () -- first create a layer local layer = cc. layer: create () local support = false -- determine whether iphone, ipad, win32, android, or mac if (cc) is supported. PLATFOR M_ OS _IPHONE = targetPlatform) or (cc. PLATFORM_ OS _IPAD = targetPlatform) or (cc. PLATFORM_ OS _WINDOWS = targetPlatform) or (cc. PLATFORM_ OS _ANDROID = targetPlatform) or (cc. PLATFORM_ OS _MAC = targetPlatform) then support = true end -- if the Platform is not supported if not support then print ("Platform is not supported! ") Return layer end local isUpdateItemClicked = false -- whether the update item is clicked local assetsManager = nil -- resource manager object local pathToSave =" "-- save path local menu = cc. menu: create () -- menu Menu menu: setPosition (cc. p (0, 0) -- set the menu position to cc. menuItemFont: setFontName ("Arial") -- set the menu font style cc. menuItemFont: setFontSize (24) -- set the font size -- used to update the label local progressLable = cc. label: createWithTTF ("", s_arialPath, 30) progressLable: setAnchorPoint (cc. p (0.5, 0.5) progressLable: setPosition (cc. p () layer: addChild (progressLable) -- Download directory pathToSave = createDownloadDir () -- Download error callback local function onError (errorCode) -- no new version if errorCode = cc. ASSETSMANAGER_NO_NEW_VERSION then progressLable: setString ("no new version") elseif errorCode = cc. ASSETSMANAGER_NETWORK then -- network error progressLable: setString ("network error") end -- progress Update callback local function onProgress (percent) -- display download progress local progress = string. format ("downloading % d %", percent) progressLable: setString (progress) end -- callback local function onSuccess () progressLable: setString ("downloading OK ") end -- Obtain the resource manager local function getAssetsManager () if nil = assetsManager then -- create a resource manager. The first parameter is the zip package, and the second parameter is the version file, the third parameter is the storage path assetsManager = cc. assetsManager: new (" https://raw.github.com/samuele3hu/AssetsManagerTest/master/package.zip "," https://raw.github.com/samuele3hu/AssetsManagerTest/master/version ", PathToSave) -- retain ownership. This method increases the reference count of the Ref object. assetsManager: retain () -- sets a series of assetsManager: setDelegate (onError, cc. ASSETSMANAGER_PROTOCOL_ERROR) assetsManager: setDelegate (onProgress, cc. ASSETSMANAGER_PROTOCOL_PROGRESS) assetsManager: setDelegate (onSuccess, cc. ASSETSMANAGER_PROTOCOL_SUCCESS) assetsManager: setConnectionTimeout (3) -- set connection timeout end return assetsManager end -- update local function update (sender) ProgressLable: setString ("") -- call the update method of AssetsManager getAssetsManager (): update () end -- reset the local function reset (sender) progressLable: setString ("") -- delete the download path deleteDownloadDir (pathToSave) -- delete the getAssetsManager (): deleteVersion () -- create the download path createDownloadDir () end -- reload the module local function reloadModule (moduleName) package. loaded [moduleName] = nil return require (moduleName) end -- enter local fu Nction enter (sender) -- if the update button is not clicked, if not isUpdateItemClicked then local realPath = pathToSave .. "/package" addSearchPath (realPath, true) end -- reload the module assetsManagerModule = reloadModule ("src/AssetsManagerTest/AssetsManagerModule") assetsManagerModule. newScene (AssetsManagerTestMain) end -- callback method local callbackFuncs = {enter, reset, update,} -- menu callback method local function menuCallback (tag, menuItem) lo Cal scene = nil local nIdx = menuItem: getLocalZOrder ()-itemTagBasic local ExtensionsTestScene = CreateExtensionsTestScene (nIdx) if nil ~ = ExtensionsTestScene then cc. director: getInstance (): replaceScene (ExtensionsTestScene) end -- traverse to add three menu items for I = 1, table. getn (menuItemNames) do local item = cc. menuItemFont: create (menuItemNames [I]) item: registerScriptTapHandler (callbackFuncs [I]) -- register and click the callback address -- set the position item: setPosition (winSize. width/2, winSize. height-I * lineSpace) if not support then item: setEnabled (false) end menu: addChil D (item, itemTagBasic + I) end local function onNodeEvent (msgName) if nil ~ = AssetsManager then -- release resource assetsManager: release () assetsManager = nil end -- Registration layer click callback method layer: registerScriptHandler (onNodeEvent) layer: addChild (menu) return layerend --------------------------------------- AssetsManager Test --------------------------------------- function AssetsManagerTestMain () local scene = cc. scene: create () scene: addChild (updateLayer () scene: addChild (CreateBackMenuItem () return sceneend

The following figure is taken from the official website:

The AssetsManager class provides the above methods. The following describes the methods one by one:
The constructor has three parameters: zip, version file network address, and download and save path.
CheckStoragePath: Check the storage path
CheckUpdate: checks for updates and returns the bool value.
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Readers can take a look at the above Code, here the Cocos2d-x is just to give a simple example of using AssetsManager to hot update the program, but does not provide a complete solution. Later I will also conduct research on Lua to Cocos2d-x Client hot update this part, have the opportunity to share with you this knowledge.