The next part of the puzzle is... to let the user know when a
dropped piece is correctly placed. So, below, you can see that the
most recent drop was good and that the total of correctly dropped
pieces is 3:
How to do this? Well, first of all, we need to have access to
the logical objects represented by the PuzzleWidgets. After all,
currently, as David Kaspar explained to me, there are 37 widgets in
the PuzzleScene:
1x LayerWidget
12x PuzzleWidget:IconNodeWidget
Each...