I'm using the Game State Management (GSM) concept in my prototype and I like it very much. One of the screen has a "Game" embeded in it, where all the "good stuff" happens. The menu launching the game works fine, but I'm not sure how I should allow the game to request a screen from the ScreenManager. I'm not talking about a menu screen, but about something contextual to the game.
For clarity's sake, let's say that when I click on a game element (a rendered model for example) I want a screen that asks me what color I want that model to be drawn next. Right now, my game knows that model is "targeted" with the mouse (I use a Ray picking approach).
I looked at the Role-Playing sample to see how they did this, but when their GameScreen handles the keys, to open the inventory for example, it's never contextual to what's actually happening in the GameScreen.
Edit: The game must also be able to get a feedback or something from the "contextual screen" to get the new model color, for example.