Posted 21 April 2012 - 12:12 PM
You have to include the .ini file because you cannot 'write', or create files on someone's computer. At least, not from an internet page, that's a huge security risk.
So you include the .ini files. (in GM, resources -> Included files). this way, the player will download these files to a web file of some sort that is stored on your pc, and your game has permissions to edit&read it.
As for multiple saves, well it depends on how you do it.
You could, for instance, simply have 3 different .ini files. Much like the 'old-school' saving system, where players select the slot they want to save in, and boom.
Or, you could just save them all into 1 .ini file, and just code it carefully.
There are plenty of examples/tutorials on reading/writing to .ini's, and I think a few on writing save files. You won't want something like how game_save worked (it saved a LOT of stuff!), but stuff like scores, what room the player is in, x/y coords, blah blah.