Glamorous Toolkit is progressing quickly, so it's worth another look from time to time. For me, it has become my main development environment by now.
Suggestion: download GT, run it, and open the "Glamorous Toolkit Book". Study the page "Explaining the Squarified Treemap Algorithm" and click on anything that looks clickable. Next, look at the pages in the section "Explanations". And then, go for the section "Implementing a Ludo Game as a moldable development exercise".