I want to store data as binary, and generally I would just lay everything in arrays, write the vector size as an int, the type id (arbitrary value) as a char, w

I want to store data as binary, and generally I would just lay everything in arrays, write the vector size as an int, the type id (arbitrary value) as a char, write data, done. I just have 2 function to do that, and it's enough. If you have fat data, binary is a wise solution. Generally flattening data in array is not so complicated, and you gain speed. SQLite is also a good solution, although I'm not sure it's good to store things like arrays of vec2, pictures... I tried protocol buffers once, I was really horrified by the size of the headers it required.