A demo project that added Addressables Scene Management support to Mirror Networking.

by Shepherd Zhu

• Change scenes from Addressables across the server.

• Host/Server side

• Client side

• Support og's onlineScene and offlineScene.

• Addressables
• Mirror Networking (Demo project is using v90. But it should be good with compatibility as long as no major API change presents. )
• ParrelSync (Not required. Demo project is using this to test without building. )

It's sad that Mirror's Scene Management does not support Addressables. I have been googling a solution for a while and nothing useful.

Someone from Reddit suggested using Fishnet which has Addressables support. But that's not gonna happen during the mid of the project. So I started writing this and it works well for me. I really hope this repo can help/inspire anyone who is also struggling.

And tbh, this is not a really complicated work as long as you know how Mirror manage scenes.

I put all custom scripts and 2 demo scenes (which is derived from TanksDemo) under _Project folder.

If you wish to implement Addressables into Mirror's scene management on your own. You have to do the following:

• Create your own NetworkManager by using the Mirror's template. (if you have one, please skip this step. )
• Change the type of 'loadingSceneAsync' to 'AsyncOperationHandle'.

public static new AsyncOperationHandle<SceneInstance> loadingSceneAsync;

• Override/rewrite nearly all functions under Scene Management code block including but not limited to ServerChangeScene, OnClientSceneChanged, ClientChangeScene, OnClientSceneInternal and UpdateScene.

PS: We mostly replace the line that using SceneManager with Addressable. For example:

loadingSceneAsync = Addressables.LoadSceneAsync(newSceneName);

• One thing you need to pay attention is NetworkClient.AddPlayer called by 'UpdateScene' function. Since loadingSceneAsync is now a struct. You can't set it to null and it takes a while to make loadingSceneAsync.IsValid() set to false after finish the loading. So I set the struct to default to prevent FinishLoadScene from getting called multiple times.

Now it should be good to go and don't forget to add your scene into Addressables Group. Happy programming!

• Head to AddressableTanks_01 scene.
• Hit Play button.
• Start a host or server.
• Change to AddressableTanks_01 or AddressableTanks_02 or whatever you like by typing in the TextField (the OnGUI thingy. Check showcase above for usage. ) on the top left of your screen.
• Check whether MyNetworkManager is working properly.

If you like my work, please give this repo a star and follow my social media.

If you encounter bugs/request a feature, please create a ticket in Issues section.