Google Code-in

Dynamate is a puzzle game for Haiku. It comes with a level editor (called LevelWorld).

The level editor has a save/load system, but does not track whether the current level has been modified. It should do so, in order to:

• Not allow to save a level if it was not modified.
• Not allow to lose changes by quitting the app or loading another level if the current one isn't saved.