First .. I apologize to everyone who reference my old capx...
I will not be able to access to my desktop (C2)..probably for another month.....25.01.2016...
holiday trip ...
Second..
RenatoB you probably need server side solution...(PHP+MySQL) to share maps between players...
that means...you need Ajax to $Post & $Get Data... from your own server...
So... player need to be online to send or receive custom maps(Json Array Data)...and you need to build your server solution...
On C2 tutorials.. if you search for PHP ,you'll find several tutorials about submit Hi-Score...I think that's a good start
Another important ting...
Always when you think... how to make HTML5 game (C2)..you think... how to make Web Site...
and..any question "How to my game accesses certain user data?" actually is (roughly) question :
"How to my web site accesses certain user data?"
So ..when you make HTML5 game you are actually made Web Site..
I have seen many questions on forum...like..Why my game can't access to some cusom folder and rip pictures to game..or why can't access to text file or camera...
Would any of us really wanted to web site accesses our text,pictures or camera?!..
You accidentally click on ads..you go on [LINK REMOVED - MOD] (please don't click on this link!)
and web site colect all your personal data from comp...
if I remember correctly..in example I use Browser ExecuteJs & FileReader() (The FileReader object lets web applications asynchronously read the contents of files (or raw data buffers) stored on the user's computer..)..
and this is a relatively new permit for HTML5..it is still not allowed that website writes new data on your comp...
I believe that you can bypass this limitation if you use NW.js ..but it means that you have to export game for comp(Win-Mac)