Super Mario clone with free resources

Use WAD or arrow keys to move and jump. I'm writing a clone of this famous game using free resources to study C++, Qt6, OpenGL, OpenAL, and Box2D.  You can see a list of free resources here: https://8observer8.github.io/webgl10-js/super-mario/ For example, I took the sprites here: https://webfussel.itch.io/more-bit-8-bit-mario Here is a source code