Cocos2d VS Pygame

As others have pointed out, the biggest difference you're seeing is likely due to the _version_ of OpenGL (and hence GLSL) version. That said, there are still important differences. I'd recommend looking at a comparison between the same shader in a project that supports both OpenGL & OpenGLES. For example, here's a shader from cocos2d-x https://github.com/cocos2d/cocos2d-x/blob/v4/cocos/renderer/shaders/positionColor.vert. Note the only difference in this case is the additional precision qualifier (lowp) for v_fragmentColor. Note too how cocos uses preprocessor macros to handle this, so they don't have to maintain separate shader sources. Depending on your goals, you might be interested in tools like Nvidia cg or nvFX that allow for creating shaders in a dialect agnostic way, but ymmv.

Speaking about markdown files on GitHub, I know that there are some repositories that have very stunning README markdown files, such as this one for Cocos2d-x, whcih includes images in conjunction with text. I might do the same for my repository as well. Considering VS Code have an extension for .md files, this might come in handy when I consider using VS Code to contribute to my game projects.

You should report this as an issue on the pygame github: https://github.com/pygame/pygame

The source code is in C (available here) essentially evaluate the current length of the vector, calculate the ratio of the parameter new lenght / curremt_length and multiply all coordinates of the vector by this ratio.

If you are into games, PyGame could be your choice for 2d traditional-looking ones, but there are also some that allow you to word in 3d environment.

This is not to say it's not possible to build high quality games in Python, for example DaFluffyPotato (YouTube, Steam Developer Profile) is a developer who made a complete game in Python using pygame and documented a lot of the process on his YouTube channel.

I recommend Love2D (Lua) and PyGame (Python).

Resolved https://github.com/pygame/pygame.git to commit 3ce0b9ec80ba4f58cf640e3ea2b9ea188b35692a Preparing metadata (setup.py) ... error error: subprocess-exited-with-error

You can see the examples at https://github.com/pygame/pygame/tree/main/examples, and run them by downloading the files or by running python -m pygame.examples.[name of example]. For example, python -m pygame.examples.cursors.