Re: Updated includes for BGT (includes bgt2py and 1st person sound pool)
If you're referring to the sin / cos arrays in math.bgt, those were an attempt at optimizing for speed. It turned out, after testing, that this was somehow slower than the built-in functions, I think because CPUs started doing this optimization in hardware. So you can ignore those and use the normal sine / cosine functions.
I'm using the coordinate system found in most 3d engines, where +x is right, +y is up, and +z is out from the screen toward the viewer. At least, that's how it's supposed to work. So x=cos (theta) * cos (phi), y=sin (phi), z = sin (theta) * cos (phi). I'm pretty sure something in fpsound_pool gets that wrong, somewhere, though.
Theta and phi are radians. I didn't include any handling for degrees.
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