A colleague wrote a blog post today that describes the process of converting a game created from the XNA Game Studio 3.1 version of the platformer starter kit to the XNA Game Studio 4.0 CTP and getting it to run on the Windows Phone 7 Series emulator. The blog post walks through the process of creating a 3.1 version of the game, creating a new 4.0 project for it, importing the code and content, updating the code to handle differences between the XNA Framework 3.1 and 4.0, and making some Windows Phone-specific changes.
Here are links with additional information:
- Blog post describing the porting process - http://blogs.msdn.com/davrous/archive/2010/03/29/windows-phone-7-platformer-starter-kit-for-xna-studio-4-0.aspx
- Source code for the 4.0 version of the platformer starter kit - http://cid-0ee4bd0f5ea745c6.skydrive.live.com/self.aspx/.Public/WindowsPhonePlatformer.zip
- French version of the blog post - http://blogs.msdn.com/davrous/archive/2010/03/29/portage-du-platformer-starter-kit-xna-3-1-vers-xna-4-0-pour-windows-phone-7.aspx