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Unity 2018.1 and IL2CPP

See original GitHub issue

API doesnot work with Unity 2018.1 and IL2CPP enabled.

NotSupportedException: To marshal a managed method, please add an attribute named 'MonoPInvokeCallback' to the method definition.
  at Steamworks.NativeMethods.ISteamClient_SetWarningMessageHook (System.IntPtr instancePtr, Steamworks.SteamAPIWarningMessageHook_t pFunction) [0x00000] in <00000000000000000000000000000000>:0 
  at Steamworks.SteamClient.SetWarningMessageHook (Steamworks.SteamAPIWarningMessageHook_t pFunction) [0x00000] in <00000000000000000000000000000000>:0 
  at SteamManager.OnEnable () [0x00000] in <00000000000000000000000000000000>:0 
  at UnityEngine.GameObject.AddComponent (System.Type componentType) [0x00000] in <00000000000000000000000000000000>:0 
  at UnityEngine.GameObject.AddComponent[T] () [0x00000] in <00000000000000000000000000000000>:0 
  at SteamManager.get_Initialized () [0x00000] in <00000000000000000000000000000000>:0 
  at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00000] in <00000000000000000000000000000000>:0 
UnityEngine.GameObject:AddComponent(Type)
UnityEngine.GameObject:AddComponent()
SteamManager:get_Initialized()
UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)

NotSupportedException: IL2CPP does not support marshaling delegates that point to generic methods.
  at System.Runtime.InteropServices.Marshal.StructureToPtr (System.Object structure, System.IntPtr ptr, System.Boolean fDeleteOld) [0x00000] in <00000000000000000000000000000000>:0 
  at Steamworks.Callback`1[T].BuildCCallbackBase () [0x00000] in <00000000000000000000000000000000>:0 
  at Steamworks.Callback`1[T]..ctor (Steamworks.Callback`1+DispatchDelegate[T] func, System.Boolean bGameServer) [0x00000] in <00000000000000000000000000000000>:0 
  at Steamworks.Callback`1[T].Create (Steamworks.Callback`1+DispatchDelegate[T] func) [0x00000] in <00000000000000000000000000000000>:0 
  at SteamSocialAPI+<Start>c__Iterator0.MoveNext () [0x00000] in <00000000000000000000000000000000>:0 
  at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00000] in <00000000000000000000000000000000>:0 
 
(Filename: currently not available on il2cpp Line: -1)

Issue Analytics

State:
Created 5 years ago
Reactions:3
Comments:98 (34 by maintainers)

Top GitHub Comments

6reactions

tomjohnstonecommented, May 15, 2018

Please find attached a callback system we implemented to overcome this issue (using Steamworks.NET):

https://gist.github.com/logadmin/9788c0b40ba967b087701268641c36ce

We also implemented some code for autogenerating this code if anyone’s interested.

4reactions

GMMancommented, Nov 20, 2018

Here’s what I came up with on Saturday: https://github.com/GMMan/Steamworks.NET/tree/il2cpp-callback-workaround-v1

I’ll see if I can get the other proposal implemented this week/end, and hold off on the PR until both are evaluated. Apologies ahead of the time for mismatching indentation; I tried to autoformat in VS but it made a mess, and VSCode apparently wasn’t set up for the correct indentation style when I was recopy-and-pasting the code…

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