Messages

1

Network / Re: Difference in sending small and big packets.

« on: September 08, 2014, 09:24:42 pm »

Thanks guys 

2

Network / Difference in sending small and big packets.

« on: September 08, 2014, 08:41:18 pm »

Hello guys. Just wanted to ask if there's a significant difference in speed between sending packet like this one:
packet << "movement" << "moveRight" << "moveLeft" < "blablablabla";
and this one:
packet << 1 << 2 << 3 << 4;

Thanks for response! 

3

General / Re: Smaller window = better performance

« on: August 27, 2014, 10:08:15 am »

Guess no.

4

General / Re: Smaller window = better performance

« on: August 26, 2014, 12:08:24 pm »

@Laurent I'm using windows. It's only slow if the window is the same as desktop or really close desktop size.
@Nexus That's only a test app so yes, I update it as fast as GPU allows.

I found out that if I use the app resized to cover whole screen CPU usage decreases from 30% to 20%. Mind blown.

I also found this thread http://en.sfml-dev.org/forums/index.php?topic=8747.0 and I think that in fullscreen mode there is no performance drop. Can u help me guys?

5

General / Re: Smaller window = better performance

« on: August 26, 2014, 11:36:04 am »

I don't think it has anything to do with optimalisation.
@Nexus They don't.
I found out that if I resize the window(maximum width, almost maximum height) or (almost maximum width, maxium height) the program doesn't slow down. But if I make it just a little bit bigger it sloooows.

6

General / Smaller window = better performance

« on: August 26, 2014, 10:41:30 am »

So I have this problem that if I resize my sfml window its performance changes. For example I have a window 400x800. If I resize the window to cover whole screen sprites move 5 times slower. Why is that?

7

Network / Re: UDP socket.send and socket.receive collide

« on: August 14, 2014, 09:47:08 am »

The problem was in:

socket.receive(packet, serverIP, serverPort);

I was overwriting serverIP and serverPort everytime I used this function. I know I shouldn't do this, but to be honest I don't know why is it such a problem(serverIP and serverPort stay the same). I guess it may have something to do with ports as I'm launching client and server from the same machine. Anyway: changing serverIP and serverPort to senderIP and senderPort solved the problem.

8

Network / Re: UDP socket.send and socket.receive collide

« on: August 13, 2014, 11:44:17 pm »

EDIT: Problem solved. Thank you very much for your effort 

9

Network / UDP socket.send and socket.receive collide

« on: August 13, 2014, 06:00:34 pm »

Hello guys! I have a problem with a client: if I only use both socket.send and socket.receive like here:

socket.setBlocking(false);

    sf::RenderWindow window(sf::VideoMode(800, 600), "Game");

    while(window.isOpen())
    {
        sf::Event event;
        while (window.pollEvent(event))
        {
            if (event.type == sf::Event::Closed)
                window.close();
        }
       
        if(sf::Keyboard::isKeyPressed(sf::Keyboard::Right))
        {
            packet << "action" << me.name << "right";
            status=socket.send(packet, serverIP, serverPort);
            packet.clear();
        }
       
        socket.receive(packet, serverIP, serverPort);
        if(packet.getDataSize()>0)
        {
            packet >> type_receive;
            if(type_receive=="movement_x")
            {
                packet >> name >> x;
                packet.clear();
                std::cout << name << "\t" << x << std::endl;
            }
        }
           
        window.clear(sf::Color::Black);
        window.display();
    }

The programme doesn't send nor receive. If I delete the socket.receive part like here:

socket.setBlocking(false);

    sf::RenderWindow window(sf::VideoMode(800, 600), "Game");

    while(window.isOpen())
    {
        sf::Event event;
        while (window.pollEvent(event))
        {
            if (event.type == sf::Event::Closed)
                window.close();
        }
       
        if(sf::Keyboard::isKeyPressed(sf::Keyboard::Right))
        {
            packet << "action" << me.name << "right";
            status=socket.send(packet, serverIP, serverPort);
            packet.clear();
        }
           
        window.clear(sf::Color::Black);
        window.display();
    }

The programme works. Do you know why is that? I tried almost everything