Performance Comparison of the hot update solution officially released by Unity

Performance Comparison of the hot update solution officially released by Unity

 

IOS hot update for Unity applications

Author: Ding Zhiyu

Unity export ieschina

 

Agenda

? What is hot update?

? Why hot update?

? How to hot update Unity applications on iOS

? Comparison of various Lua plug-ins supporting Unity iOS hot updates

What is hot update?

? General Definition

? You do not need to shut down the server, fix vulnerabilities and update resources without stopping services. The key is to update the logic code.

? Narrow definition (iOS hot update)

? You can update the code executed on the client without re-packaging and submitting the code to the AppStore, that is, automatically updating the program without downloading the app.

? Status quo

? Apple prohibits some reflection operations on C #, JIT (instant compilation, creation and running of New Code when the program is running), logical hot update, and AssetBundle for hot resource update.

Why hot update?

? Shorten the process for users to obtain the new application client and improve user experience.

? Specific reasons for iOS applications are as follows:

? The review cycle of the App Store is difficult to control.

? Mobile apps are updated frequently.

? For large applications, the update cost is too high.

? Ultimate status

? The content of an application is completely changed without being downloaded again or stopped.

How to hot update Unity applications on iOS

? Hot update of Android applications

? Compile the Execution Code into assemblydll.

? Package the code as a TextAsset into Assetbundle.

? When running, use the Reflection mechanism to implement the Code function.

? Update the corresponding Assetbundle to implement hot update.

 

? Similarities and differences between Android and iOS hot updates

? Apple officially prohibits hot update of apps in iOS; JIT is invalid in iOS.

? Hot update solution: Unity + Lua plug-in.

 

? How iOS hot Update works with Lua plug-in

 

? Notes about Unity hot update

? The code and resources to be updated must be packaged into AssetBundle (uncompressed format is recommended)

? Several important paths of Unity

? Resources (read-only)

? StreamingAssets (read-only)

? Application. dataPath (read-only)

? Application. persistentDataPath (read/write)

 

? Resources of important paths

? Resources in the Resources folder are packaged whether used or not.

? Resources are compressed and converted to binary

? Read-Only resources in the packaged folder

? Cannot be dynamically changed, cannot be hot updated

? Use Resources. Load to Load

 

? StreamingAssets of important paths

? Cache directory of Stream Data

? Resources in the folder are packaged whether used or not.

? Resources are not compressed and encrypted

? The resources in the packaged folder are read-only and mainly store binary files.

? Unable to perform hot update

? WWW class loading (CreateFromFile is generally used. If the resource is AssetBundle, it is determined by whether it is compressed Based on the packaging method)

? Relative path. The specific path depends on the actual platform.

? Application. streamingAssetsPath

? IOS: Application. dataPath + "/Raw" or Application/xxxxxxxx-xxxx-xxxxxxxxxx/xxx. app/Data/Raw

 

? Important Path: Application. dataPath

? Path of the game's data folder (for example, Assets in the Editor)

? Rarely used

? Unable to perform hot update

? IOS path: Application/xxxxxxxx-xxxx-xxxxxxxxxxxx/xxx. app/Data

 

? Application. persistentDataPath

? Path of the persistent data storage directory (sandbox Directory, which does not exist before packaging)

? Resources in the folder are packaged whether used or not.

? It is valid during running and can be read and written.

? NO content restriction. Read Binary files from StreamingAsset or read files from AssetBundle to write data to PersistentDataPath.

? Suitable for hot update

? IOS path: Application/xxxxxxxx-xxxx-xxxxxxxxxxxx/Documents

 

? General process of iOS hot update using Lua plug-in

 

Comparison of various Lua plug-ins supporting Unity iOS hot updates

? ULua (asset store)

? Native version of uLua plug-in

? No static code

? Reflection mechanism, low efficiency, slow speed, frequent gcalloc

? Update maintenance has been stopped and Unity5.x is not supported.

 

? ULua & cstoLua

? Mature and stable development platform, Fast Bug fixes

? Numerous developers and rich resources

? Static Method with excellent performance

? There are successful commercial product cases (three kingdoms, super god team, cool fish fishing, Jedi war police, this is not a turret, etc.) Fish, Jedi war police, this is not a turret, etc)

? Both are improvements based on the native version. In the future, the two will be merged into a plug-in.

 

? SLua

? Static Method with excellent performance

? Concise core code

? Fewer resources, less mature and stable development platforms

? No success commercial product cases success commercial product Cases

? Improvements based on native versions

Comparison of various Lua plug-ins supporting Unity iOS hot updates

? C # Light (L #)

? Fade out of mainstream

? UniLua

? C # an incomplete solution for implementing the Lua Virtual Machine

? Fade out of mainstream

Comparison of various Lua plug-ins supporting Unity iOS hot updates

Then there is the testing code of uLua and sLua.

In summary, uLua is definitely better.