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implementing different users in XNA - XML

So I am making a simple 2D game in XNA, and I want to implement different users (players), so each person playing can have their own high score, can only play levels they've already played, can only ...
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321 views

Intuitive way to handle dragging outside the Arc Ball?

So I'm writing a game (or toy, rather), which involves manipulating a 3d object with the mouse. I'm trying to get the most intuitive control that I can. I've implemented the "Arc Ball" mouse control. ...