problem with javascript accessing C# with Windows Store (Universal 10)

Hi,

the reason why your javascript scripts cannot see C# scripts is that by default all C# scripts on Windows Store (Universal 10) are compiled with Microsoft C# compiler (Roslyn), which targets .NET Core 5, and UnityScript compiler cannot reference such assemblies.

To fix it, go to player settings, find compilation overrides setting and set it to "Use .NET Core partially". It will make Assembly-CSharp-firstpass.dll to be compiled with Mono C# compiler, while Assembly-CSharp.dll will still be compiled using Roslyn.

 

Scripts under Plugins and Standard Assets folders go to Assembly-CSharp-firstpass, others should go to Assembly-CSharp.
With 'Use .NET Core Partially' the later is compiled using Microsoft compiler, so arranging your scripts accordingly might help.

 

System.Type.GetTypeInfo() availability depends on the compiler which you're using (available when used with MS Compiler which uses .NET Core, not available when Mono compiler is used), Compilation Overrides controls which compiler is used when compiling scrip.

 

When you say "plugins", what is it, a dll ? If so, it's already compiled, so Compilation Overrides don't affect it.

 

Well, there are several ways to solve this:

• Move functionality with System.Type.GetTypeInfo to dll, that way you'll choose which compiler to use, more info http://docs.unity3d.com/Manual/windowsstore-plugins.html
• Don't use System.Type.GetTypeInfo, use regular reflection API
• Have System.Type.GetInfo functions in Assembly-CSharp.dll, then set callbacks in to Assembly-CSharp-firstppas.dll, so whenever somebody calls function from Assembly-CSharp-firstpass.dll, the callback would be called. For.ex.

Code (csharp):

1.  
2. // Assembly-CSharp-firstpass.dll - compiler with Mono
3. public void delegate _DoSomethingWithTypeInfo();
4. public class Utility
5. {
6.     public static _DoSomethingWithTypeInfo doSomething;
7.    // Accessible both from JS & C#
8.    public void DoSomething()
9.    {
10.       _doSomething();
11.     }
12. }
13.  
14.  
15. //Assembly-CSharp.dll  - compiled with MS compiler
16.  
17. public class Implementation
18. {
19.     public static void DoSomething()
20.     {
21.        TypeInfo t = typeof(something).GetTypeInfo();
22.     }
23.  
24.     // Call this somewhere in the begining of your game
25.     public static void InitializedCallback()
26.     {
27.        Utility.doSomething = DoSomething;
28.     }
29. }
30.  
31.