Further additions to the car demo:

Added some enhancements to the car demo:

A simple car driving game demo with user-controlled physical objects:

Just uploaded the demo v0.4.0 to Play Store: https://play.google.com/store/apps/details?id=org.rkibria.yapygdemo

As it turned out, changing all the math function calls (e.g. math.sin()) from Python math to Cython C-library calls removed the huge speed drop when running the engine on my Android phone! Will have to watch out for other instances of functions that also exist in a C version.

 Rectangles and circles can collide with each other and also react physically:

Rectangle shapes can now collide (more or less) correctly with circle shapes: