Can you please tell me, can i use JavaScript in C++ with WinRT instead of scripting language ? for games purposes.

Question

Can i use JavaScript not particularly with HTML/CSS, but only with C++ for example, like a Scripting Language ?

For example i want to write C++/CX library and after i want use JavaScript inside that library, which is also uses this C++/CX library.

Analogues:

C++ + LUA bindings etc...

Because my vision of why WinRT needs C++, C# and also JavaScript:

- C++/CX for native optimized engine code, using JS scripts

- C# for game engine editor, using JS scripts and C++/CX engine code

- JavaScript for scripting language, using C++/CX engine code and C# editor code

Can i accomplish this with WinRT thanx to cross-language features ?

That would be really awsome.

Answer 1

 

Hello,

 

There is a document to talk about the Windows Runtime Components, and interaction between them.

 

Creating Windows Runtime Components

http://msdn.microsoft.com/en-us/library/windows/apps/xaml/hh441572(v=vs.110).aspx

 

By using the Windows Runtime, you can create components (essentially DLLs) in C++, C#, or Visual Basic, and call into them in a simple and natural way from a Windows Metro style app that's built by using JavaScript. Although you can use JavaScript to access the Windows Runtime APIs, JavaScript cannot easily access native C++ libraries or .NET Framework class library functionality.

 

Best regards,

Jesse

---

Jesse Jiang [MSFT]
MSDN Community Support | Feedback to us

Answer 2

wrong understanding of question.

wrong answer.

Let's break the question on small parts:

1st part) Can i compile Script.js source code file and execute some functions, from my C++/CX code ?

smth like:

compiledScript = CompileJavaScript("Script.js");

someFunction = compiledScript.GetFunction("SomeFunction");

someFunction();

or:

CompileJavaScriptToDLL("Script.js", "Script.DLL");

compiledScript = LoadScriptDLL("Script.DLL");

someFunction = compiledScript.GetFunction("SomeFunction");

someFunction();

Answer 3

Hi NewbTom,

There is no JavaScript compiler or interpreter provided for use within your C++ code. The JavaScript engine is available only as part of the host for HTML/JS apps or within the WebView control.

--Rob

Answer 4

:````(

So i can't call JavaScript COM functions via C++/CX ??? Anyhow ?

Or i can't create COM functions in JavaScript at all ?

[quote]

The JavaScript engine is available only as part of the host for HTML/JS apps or within the WebView control

[/quote]

does this mean that i can't create JavaScript DLLs ?

Answer 5

Correct. You cannot use JavaScript in a C++ app. You can create a Windows Runtime Component in C++ or C# to use in a JavaScript app.

--Rob

Answer 6

Well, i'm rly disappointed :`(

JavaScript would perfectly fit scripting needs.

C# too huge and complicated for scripting language.

And when will you finally make Compiler-As-A-Service ?

How long else to wait Compile("Soluton.sln") at runtime ?

Ok, let's considers this scenario:

I will use C++/CX and C# for writing game engine staff,

and use JavaScript for high level staff + scripts.

I hope this is not forbidden ?

I.e. C++/CX + C# for low level code, and only JavaScript for high level launch code or smth like that.

Also would be nice to have customizable Scripting language, where i could add new keywords, new functionality and Intellisence also must support this additional functionality, etc... Need smth advanced Scripting develope in VisualStudio, where i could create my own scripting language, which support new COM style managed functions and types. Whats up with Roslyn ? i hope it will allow us to create scripting languages, not only parse existing languages.

Answer 7

Hi Rob,

Is there any chance we can use JavaScript WinRT component from C++/C# in final release (or future version) of Visual Studio?

Is there any workaround to do this indirectly? Any help will be appreciated.

-Nitin