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Description
There seems to be an issue with the collision system where, under certain circumstances, the screen just goes completely blank.
To replicate, fire up the castle demo & jump up under the cone "roof" of the left tower. If you hit it just right, the screen blanks.
I checked the value of the camera X/Y/Z & the print out as "NaN."
I traced the problem all the way back to 0077a1e (my first commit). So I did a diff but couldn't find anything that jumped out as a problem.
When I have a chance, I will compile the original source under VS2015 from scratch and see if the problem exists there.