How to execute the same JS is more than on client?

Question

4.00/5 (1 vote)

See more:

I developed a web based connect4 game, but I have a problem.

In single player mode it works just fine and for multiplayer mode I managed to update the board saving the state (0-clear, 1- yellow, 2-red for each slot) into a XML file (via AJAX) and then updating the board image within 0.5s also via AJAX so the other player sees the move of his opponent.

The problem is that all I do is update the image, but I need to update the array as well. When a player made his move this javascript code is executed:

JavaScript

arrayPecas[coluna] = arrayPecas[coluna] + 1;

I know JS is client side and it's processed locally, but I need to update that array on the browser of other player.

How should I do the trick?

Thanks in advance!

Posted 9-Mar-11 2:38am

Maxdd 7

Updated 9-Mar-11 2:49am

Manfred Rudolf Bihy

v3

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Albin Abel · Answer 1 · 2011-03-09T03:25:00

Solution 1

Use ajax. Your clients are observers and a server side page which is observable. The observable do any serverside process and update the observers. The observers listen continuously to the observable by the javascript's setInterval method.

An example of this patterns is explained here.

Observer Pattern in web applications (JavaScript): A walkthrough with an AJAX example[^]

This article has both observer and observable at client side. But you can move observable to a serverside. Try!

Posted 9-Mar-11 3:25am

Albin Abel

Updated 9-Mar-11 3:28am

v2

Comments

Maxdd 7 9-Mar-11 9:42am

Thank you very much, I'll take a look.

Maxdd 7 9-Mar-11 12:26pm

But the way, how would you move observable to server-side ?

Albin Abel 9-Mar-11 14:22pm

When you move observable to server side, each client has to identify itself with a unique key. This unique key has to pass with ajax request. Then the observalble can serve accordingly. Alternatively you can create a webservice which can communicate through ajax

Mouadh TRABELSI · Answer 2 · 2011-03-11T04:58:00

Solution 2

You can also use "Live Data binding using ASP.NET AJAX 4.0"
each time a player update the "arrayPecas", using Ajax , you call the server to update the others players

you can find exemples here :

http://msdn.microsoft.com/en-us/magazine/ee309508.aspx[^]

and

http://dotnetslackers.com/articles/ajax/Live-Data-Binding-using-ASP-NET-AJAX-4-0-Preview-4.aspx[^]

Posted 11-Mar-11 4:58am

Mouadh TRABELSI

Comments

Maxdd 7 11-Mar-11 14:55pm

Thanks for your help.

Unfortunately my little project it's in PHP.