Ok, so I figured out that KScoreDialog doesn't fit in KAtomic, because it is designed as a simple and most common highscore tables implementation (and it is good at it), and KAtomic needs something slightly different:

For each player there's exactly ONE highscore per level.

This scheme is unsupported by KScoreDialog - it takes a different approach to managing highscores.

So meet the very simple but very cute KAtomicHighscores class :-)

TODO: "Show Highscores" is currently not working. I need to deside on dialog UI layout and implement it...