cocos2d-x + nodejs for multiplayer

cocos2d-x C++
#1

Is it possible to use multiplayer with nodeJS using cocos2d-x C++? Has anyone tried it?

#2

Yes it’s possible by using libCURL and any webserver technology. We are developing our multiplayer game using .NET MVC4 and so far works great.

#3

Thanks for the reply!

I am not familiar with libCURL. How is it related to nodeJS? Do you know any reference tutorial on how to do this? Thanks! :slight_smile:

#4

Hi,
libCURL is a library for URL transfer supporting lots of protocols that is bundled with cocos2d-x. Basically it will allow you to load content from RUL through HTTP protocol. This is why I said the server technology does not matter. There is a curlTest in tests in that you can check out or a code something like this:

size_t writter(void *data, size_t sz, size_t mb, char *stream)
{
     std::string buf = std::string(static_cast(data), sz * mb);
     strcpy(stream,buf.c_str());
     return sz * emb;
}

char *getData(CURL* curl_handle, char *url)
{
    char buf[32000];
    curl_easy_setopt(curl_handle, CURLOPT_URL, url);
    curl_easy_setopt(curl_handle, CURLOPT_FOLLOWLOCATION, 1);
    curl_easy_setopt(curl_handle, CURLOPT_HTTPGET, 1);
    curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, write_data);
    curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, &buf);
    curl_easy_perform(curl_handle);
    return strdup(buf);
}

init CURL like this:

CURL *curl_handle;
curl_handle = curl_easy_init();

get data from url like this:

long getServerTime()
{
     auto res=getData(curl_handle, SERVER_URL("server/gettime"));
     long tm=atol(res);
     return tm;
}

release like this:

curl_easy_cleanup(curl_handle);

Hope this helps

#5

nice! Thank you so much! I will test this ASAP. :slight_smile:

#6

I tried the code on this link http://www.plungeinteractive.com/blog/internet-communications-on-cocos2d-x-with-libcurl/

It runs fine. However, when I changed “www.jesusbosch.com” to “http://10.0.2.2/test/test.php”, it logs:

@code: 7@

(7 means CURLE_COULDNT_CONNECT).

I’m using Windows 7 running XAMPP (Apache). I’m running the app using my galaxy Note device. My PC and device is connected to the same WIFI.
I also added this to AndroidManifest.xml

test.php only contains:

so I’m expecting the program to log “test”.

What is wrong with my code? Anyone? TIA!

#7

Looks like 10.0.2.2 will only work on emulator.

I tried the IP of my PC given by the router using ipconfig in cmd and it worked! :smiley: