I have been trying to simulate the rolling of dice [normal, 6-sided for now, but variations of the application might use non-cubic dice]. For several reasons, the die need to be ‘rounded’—the three in the middle of the image in the “Construction” paragraph of the Wikipedia page [en.wikipedia.org/wiki/Dice] nicely shows a smaller version of what I am using.
So, while there is so much about the use of AwayPhysics that I have yet to be able to understand, my testing and reading of the documentation and tutorials led me to the conclusion that I would likely get a better result if, instead of using a BoxShape, I tried a MultiSphereShape.
I have made the modifications to the AwayPhysics library to add an AWPMultiSphereShape class. Preliminary testing is giving me a better visual appearance of the way I think dice should behave, but perhaps it is just that by trial and error I have stumbled upon a better set of property values and applications of impulses which, could have been applied to a simpler BoxShape with equivalent results.
In any case, I believe that including a port of btMultiSphereShape in the AwayPhysica library would be of real value for many more uses than just simulating rolling dice. I will be happy to send along the code that I used to implement my version. Of course, you will know that it is rather simple to do, so you could do a better and more complete job than I did. [I did not define a new AWPCollisionShapeType nor implement a draw method for the AWPDebugDraw class.]
