Displays what keys you're pressing in the game, simple as that. Just download the latest release and play.
You can drag it around with your mouse, to close it simply press escape (while focused).
You can change the colors of the buttons in the settings.txt file, that will appear after the first run:
Released: 200 200 200
Pressed: 120 120 120
Opacity: 128
Released and Pressed are decimal RGB values, while Opacity is just an alpha value applied to all buttons. Doing weird stuff to these will most likely result in a crash. If you screw up, you can always remove this file and run the app again to generate a new one.
Oh, it's only for Windows, sorry.
Requires CMake 3.11, that's basically it. After it's built, remember to copy generated DLLs from build/_deps/sfml-build/lib to build.
mkdir build && cd build
cmake ..
cmake --build .You'll need that if you want to change the colour or opacity of the "buttons".
Thanks to Alia5 for the Transparent SFML Window template!