Polyhedron Rivals by Mrs Beanbag

My third demo written in 5 days using OpenGL in C++. Now with shadows!

Polyhedra love to dance, but they are interrupted by a surprise visitor. Don't
worry! The Carousel looks out for its children and knows what to do!

Linux version only for the party, but i will release a Windows build when i get
time. Requires PulseAudio and SFML*, plus all the usual OpenGL gubbins.

* `polyhedron_rivals_linux` is compiled against SFML 2.4
* `polyhedron_rivals_ubuntu20` is compiled against SFML 2.5

3D polyhedron models adapted from George Hart's Encyclopedia of Polyhedra
http://georgehart.com
A very old website, long may it live.

Mrs Beanbag
Revision 2022
