vnen, I don't know why but I expected a «ask yourself if you really need it.» comment haha :)
Yeah, I really need that library. I wish I could use C++ without GDScript because that would make my life easier I think.
I'll try to make that library as a module then, although you scared me talking about SCons (never heard of this before), because the game is going to be published for Android phones.
I'll take a look at those examples you share, thank you very much!
(btw, I have no idea about the downvote, I selected your answer as the best, so...)