Unity Heat More (one)

Agenda

? What is hot update

? Why Hot Updates

? How to make a hot update to a Unity app on IOS

? Comparison of various Lua plugins that support Unity iOS hot update

What is hot update

? Generalized definition

? No need to shut down the server, fix the bug in the non-stop state, update the resources, etc., focus on updating the logic code.

? narrow definition ( iOS hot update)

? without repackaging the code into AppStore, you can update the execution code of the client, which automatically updates the program without downloading the app .

? Present situation

? Apple prohibits partial reflection operations in C #, disables JIT(Immediate compilation, creates and runs new code while the program is running), does not allow logical hot updates, and only allows the use of assetbundle Make a resource hot update.

Why Hot Updates

? Improve the user experience by shortening the process for users to get a new version of the app's client.

? specific to the IOS platform for the application, there are several reasons

? The APP store's audit cycle is difficult to control.

? Mobile apps are frequently updated.

? For large applications, the cost of updating is too high.

? Ultimate State

? Completely transform the content of an app without re-downloading and non-stop.

How to make a hot update to a Unity app on IOS

? Hot updates for Android apps

? precompile The execution code to Assemblydll.

? Package The code as Textasset into the assetbundle.

? at run time, the functionality of the code is implemented using the Reflection mechanism.

? update the appropriate Assetbundle to implement the hot update.

? the similarities and differences between Android and IOS hot updates

? Apple officially prohibits program hot updates under iOS, and theJIT is not available under iOS.

? Hot update Scenario:Unity+lua plugin.

? how IOS hot update works with the Lua plugin

? Note Points for Unity hot update

? code and resources that need to be updated must be packaged into assetbundle(for packaging with uncompressed format)

? familiar with several important paths to Unity

? Resources (Read only)

? Streamingassets (Read only)

? Application.datapath (Read only)

? Application.persistentdatapath (Readable and writable)

? Resources of the important path

? Resources will be packaged for use or not in resource folders

? Resources are compressed and converted into binary

? Resource read-only under folder after packaging

? Cannot be changed dynamically, hot update cannot be made

? loading with resources.load

? the streamingassets of the important path

? Cache directory for streaming data

? Resources under the folder will be packaged regardless of whether they are used or not

? Resources are not compressed and encrypted

? The resources under the folder are read-only, and the binaries are mostly stored

? Cannot make hot updates

? WWW class Load (general use CreateFromFile , if the resource is assetbundle, according to its packaging method to see if it is compressed to determine)

? Relative path, the specific path depends on the actual platform

? Application.streamingassetspath

? IOS:Application.dataPath + "/raw" or Application/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/xxx.app/data/raw

? the Application.datapath of the important path

? The path to the game's Data folder (for example, Assets in editor )

? Rarely used

? Cannot make hot updates

? IOS path : application/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/xxx.app/data

? the Application.persistentdatapath of the important path

? the path to the persisted data store directory ( sandbox directory, which does not exist before packaging )

? Resources under the folder will be packaged regardless of whether they are used or not

? Valid at run time, readable and writable

? no content restrictions, read binary files from Streamingasset or read files from Assetbundle to write persistentdatapath

? Suitable for hot updates

? IOS path : application/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/documents

? The overall process for IOS hot update using the Lua plugin

Comparison of various Lua plugins that support Unity iOS hot update

? Ulua (Asset Store)

? Ulua plug-in native version, pedigree

? does not produce static code

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

? Update maintenance stopped, unity5.x not supported , fade out of mainstream

? Ulua & Cstolua

? Mature and stable development platform, fast Bug fixes

? Many developers, rich resources

? static method, excellent performance

? Successful commercial product case (PA, super God, cool fish fishing, Jedi, this is not the turret, etc.) fish, Jedi Police, this is not the turret, etc.

? are based on native version improvements; In the future, the two will be merged into a single plugin

? Slua

? static method, excellent performance

? The core code is simple

? Less resources, the development platform is not mature and stable

? No Success Commercial product case Success Commercial product case

? Improvements based on the native version

Comparison of various Lua plugins that support Unity iOS hot update

? C#light (l#)

? Fade out of mainstream

? Unilua

? C # implementation of Lua virtual machines, non-complete scenarios

? Fade out of mainstream

Comparison of various Lua plugins that support Unity iOS hot update

Then there is The test code for Ulua and Slua.

In a comprehensive sense , the Ulua will be better.

Test results will not be done , you can download the PDF yourself to see

Http://china.unity3d.com

Unity Hot More (one)