Stride: Add instructions for compiling and running the Xenko editor from source

[aaronfranke]

Currently, the Building from source section of README.md has some instructions, but those instructions are not enough. On my system, running the project from within VS causes this error despite compiling fine:

As the instructions and system requirements say, I have Git installed with Git LFS, VS 2017, Windows 8.1, .NET 4.6.2 Dev tools, C++ desktop dev tools, FBX SDK, and XenkoDir environment variable set correctly. I can run the sample projects fine, and build fine, but I don't see how to run the editor.

[AirAKose]

What is your startup project? Many of the projects just generate libraries. The one I've been launching is "Xenko.GameStudio", but I'm not sure if there are other executable projects

[Kryptos-FR]

That's not a missing requirements. Just the default project is not set on Xenko.GameStudio. Change that and it will work ;-)

That said we could add a line in the documentation to indicate which project is the Game Studio.

[aaronfranke]

Changing the launch project to Xenko.GameStudio worked. I wouldn't have figured this would be it. I also tried Xenko.Editor and that didn't work either.

So either add this to the documentation, or perhaps, change the default project to Xenko.GameStudio.

[xen2]

That's not something saved by Visual Studio explicitely.

However, I noticed a while ago that the way VS choose this default startup project is by taking the first csproj in the solution file.
I remember we had GameStudio at the top for this reason at some point, but seems it got moved around.
Let me fix that.

[xen2]

My bad, I remember we did this ordering in the generated user game solution by putting Windows project before Game one, we never did it for the game studio.

[aaronfranke]

Thanks! Glad to see this fixed so quickly. :+1: