This was delayed due to color issues. Text uses one format for colors, lines and pixels use another. They are very similar but definitely not the same even though they both occupy one int.
This SDL GUI Tutorial (for Empire) now has animated buttons and a checkbox that toggles. It's coming along and in another tutorial or two I'll get back into the game code proper. But i want to finish the GUI. I'm about halfway through it.
- Link to C Game programming tutorials.