Hi everyone,
The blog is under construction and new pages may become available at any time. Today I am starting the technical documentation section of the engine (Solarus), which will provide a detailed specification of the engine and the quests management. Many subsections will come soon with the specification of each component of a quest (maps, tilesets, sprites, scripts, etc.). For now, you can browse the Doxygen documentation of the C++ code if you are interested in how the engine source code is designed.