https://lxr.kde.org/source/games/kollision/src/mainarea.h?v=stable-kf6-qt6
/stable-kf6-qt6/games/kollision/src/mainarea.h
KDE Source Cross Reference
stablegameskollisionsrch
https://lxr.kde.org/source/games/kollision/src/mainarea.cpp
/kf6-qt6/games/kollision/src/mainarea.cpp
KDE Source Cross Reference
gameskollisionsrccpp