Messages

1

Network / I have problem receiving Data from UDP Socket

« on: August 31, 2011, 04:45:39 pm »

Hi,

I've done something wrong I'm trying to Query a HLDS server.

More info about query:
http://developer.valvesoftware.com/wiki/Server_queries

Here is the code:

Code: [Select]


#include <SFML/System.hpp>
#include <SFML/Network.hpp>
#include <iostream>
#include <string>
#pragma comment(lib,"sfml-network-s-d.lib")
#pragma comment(lib,"sfml-system-s-d.lib")
using namespace std;
#define A2S_INFO "\xFF\xFF\xFF\xFF\x54Source Engine Query"
#define A2S_INFO_LENGTH 25
//int WINAPI WinMain(HINSTANCE hThisInstance, HINSTANCE hPrevInstance, LPSTR lpArguments, int NumParameters)
int main()
{
cout << "PROGRAM STARTING..." << endl;
sf::Packet rcvPaket;
sf::IPAddress rcvIP;
unsigned short rcvPort;
cout << A2S_INFO << endl;

cout << "CREATING SOCKET..." << endl;
sf::SocketUDP sckClient;
cout << "SOCKET CREATED!" << endl;

cout << "BINDING PORT 6586..." << endl;
if(!sckClient.Bind(6586))
{
cout << "BIND FAILED !" << endl;
system("pause");
return 0;
}
cout << "PORT 6586 BINDED..." << endl;

cout << "SENDING PACKET..." << endl;
if(sckClient.Send(A2S_INFO,A2S_INFO_LENGTH,"85.25.35.235",27015) != sf::Socket::Done)
{
cout << "PACKET SENDING ERROR !" << endl;
system("pause");
return 0;
}
cout << "PACKET SENT!" << endl;

//sf::Sleep(1000);

cout << "RECEIVING PACKET..." << endl;
unsigned int rcvLen;
char * data = NULL;

if(sckClient.Receive(data,1028,rcvLen,rcvIP,rcvPort) != sf::Socket::Done)
{
cout << "PACKET RECEIVE ERROR !" << endl;
system("pause");
return 0;
}
//cout << "Data Len: " << rcvLen << " Data: " << data << endl;
printf("Data len: %d Data: %s\n",rcvLen,data);
cout << "PACKET RECEIVED!" << endl;

cout << "CLOSING SOCKET..." << endl;
sckClient.Close();
cout << "SOCKET CLOSED!" << endl;
cout << "END OF PROGRAM!" << endl;

system("pause");
return 0;
}


And Here is the program result:

Code: [Select]


PROGRAM STARTING...
    TSource Engine Query
CREATING SOCKET...
SOCKET CREATED!
BINDING PORT 6586...
PORT 6586 BINDED...
SENDING PACKET...
PACKET SENT!
RECEIVING PACKET...
Cannot receive data from the network (invalid parameters) <-- PROBLEM?
PACKET RECEIVE ERROR !
Press any key to continue . . .


If someone knows what is the problem please tell me.

Thanks in advance!

2

General / Make Error Linux Debian

« on: May 30, 2011, 05:57:37 pm »

Hello,
I recently tried to compile app on linux, but I could not even make and install the SFML lib.
Here is the code:

Code: [Select]


root@bt:~/SFML-1.6# make install all
make[1]: Entering directory `/root/SFML-1.6/src/SFML'
make[2]: Entering directory `/root/SFML-1.6/src/SFML/System'
make[2]: Leaving directory `/root/SFML-1.6/src/SFML/System'
make[2]: Entering directory `/root/SFML-1.6/src/SFML/Window'
make[2]: Leaving directory `/root/SFML-1.6/src/SFML/Window'
make[2]: Entering directory `/root/SFML-1.6/src/SFML/Network'
make[2]: Leaving directory `/root/SFML-1.6/src/SFML/Network'
make[2]: Entering directory `/root/SFML-1.6/src/SFML/Graphics'
make[2]: Leaving directory `/root/SFML-1.6/src/SFML/Graphics'
make[2]: Entering directory `/root/SFML-1.6/src/SFML/Audio'
make[2]: Leaving directory `/root/SFML-1.6/src/SFML/Audio'
make[1]: Leaving directory `/root/SFML-1.6/src/SFML'
make[1]: Entering directory `/root/SFML-1.6/src/SFML'
make[2]: Entering directory `/root/SFML-1.6/src/SFML/System'
g++ -shared -Wl,-soname,libsfml-system.so.1.6 -o ../../../lib/libsfml-system.so.1.6 Clock.o Lock.o Randomizer.o Sleep.o Unicode.o ./Unix/Initializer.o ./Unix/Mutex.o ./Unix/Platform.o ./Unix/Thread.o -lpthread
make[2]: Leaving directory `/root/SFML-1.6/src/SFML/System'
make[2]: Entering directory `/root/SFML-1.6/src/SFML/Window'
g++ -shared -Wl,-soname,libsfml-window.so.1.6 -o ../../../lib/libsfml-window.so.1.6 Context.o Input.o VideoMode.o Window.o WindowImpl.o ./Linux/Joystick.o ./Linux/VideoModeSupport.o ./Linux/WindowImplX11.o  -lX11 -lXrandr -lGL
make[2]: Leaving directory `/root/SFML-1.6/src/SFML/Window'
make[2]: Entering directory `/root/SFML-1.6/src/SFML/Network'
g++ -shared -Wl,-soname,libsfml-network.so.1.6 -o ../../../lib/libsfml-network.so.1.6 Ftp.o Http.o IPAddress.o Packet.o SelectorBase.o SocketTCP.o SocketUDP.o ./Unix/SocketHelper.o
make[2]: Leaving directory `/root/SFML-1.6/src/SFML/Network'
make[2]: Entering directory `/root/SFML-1.6/src/SFML/Graphics'
g++ -shared -Wl,-soname,libsfml-graphics.so.1.6 -o ../../../lib/libsfml-graphics.so.1.6 Color.o Drawable.o Font.o FontLoader.o GraphicsContext.o Image.o ImageLoader.o Matrix3.o PostFX.o RenderTarget.o RenderWindow.o Shape.o Sprite.o String.o View.o ./GLEW/glew.o ./libjpeg/jcapimin.o ./libjpeg/jcapistd.o ./libjpeg/jccoefct.o ./libjpeg/jccolor.o ./libjpeg/jcdctmgr.o ./libjpeg/jchuff.o ./libjpeg/jcinit.o ./libjpeg/jcmainct.o ./libjpeg/jcmarker.o ./libjpeg/jcmaster.o ./libjpeg/jcomapi.o ./libjpeg/jcparam.o ./libjpeg/jcphuff.o ./libjpeg/jcprepct.o ./libjpeg/jcsample.o ./libjpeg/jctrans.o ./libjpeg/jdapimin.o ./libjpeg/jdapistd.o ./libjpeg/jdatadst.o ./libjpeg/jdatasrc.o ./libjpeg/jdcoefct.o ./libjpeg/jdcolor.o ./libjpeg/jddctmgr.o ./libjpeg/jdhuff.o ./libjpeg/jdinput.o ./libjpeg/jdmainct.o ./libjpeg/jdmarker.o ./libjpeg/jdmaster.o ./libjpeg/jdmerge.o ./libjpeg/jdphuff.o ./libjpeg/jdpostct.o ./libjpeg/jdsample.o ./libjpeg/jdtrans.o ./libjpeg/jerror.o ./libjpeg/jfdctflt.o ./libjpeg/jfdctfst.o ./libjpeg/jfdctint.o ./libjpeg/jidctflt.o ./libjpeg/jidctfst.o ./libjpeg/jidctint.o ./libjpeg/jidctred.o ./libjpeg/jmemmgr.o ./libjpeg/jmemnobs.o ./libjpeg/jquant1.o ./libjpeg/jquant2.o ./libjpeg/jutils.o ./libpng/png.o ./libpng/pngerror.o ./libpng/pnggccrd.o ./libpng/pngget.o ./libpng/pngmem.o ./libpng/pngpread.o ./libpng/pngread.o ./libpng/pngrio.o ./libpng/pngrtran.o ./libpng/pngrutil.o ./libpng/pngset.o ./libpng/pngtrans.o ./libpng/pngvcrd.o ./libpng/pngwio.o ./libpng/pngwrite.o ./libpng/pngwtran.o ./libpng/pngwutil.o ./SOIL/image_DXT.o ./SOIL/SOIL.o ./SOIL/stb_image_aug.o ./zlib/adler32.o ./zlib/compress.o ./zlib/crc32.o ./zlib/deflate.o ./zlib/inffast.o ./zlib/inflate.o ./zlib/inftrees.o ./zlib/trees.o ./zlib/uncompr.o ./zlib/zutil.o -lfreetype -lX11 -lGL
make[2]: Leaving directory `/root/SFML-1.6/src/SFML/Graphics'
make[2]: Entering directory `/root/SFML-1.6/src/SFML/Audio'
g++ -o AudioDevice.o -c AudioDevice.cpp -W -Wall -pedantic -I../../../include -I../../ -O2 -DNDEBUG -fPIC
In file included from ../../SFML/Audio/AudioDevice.hpp:31,
                 from AudioDevice.cpp:28:
../../SFML/Audio/OpenAL.hpp:37:19: error: AL/al.h: No such file or directory
../../SFML/Audio/OpenAL.hpp:38:20: error: AL/alc.h: No such file or directory
In file included from ../../SFML/Audio/AudioDevice.hpp:31,
                 from AudioDevice.cpp:28:
../../SFML/Audio/OpenAL.hpp: In function ‘void sf::priv::ALCheckError(const std::string&, unsigned int)’:
../../SFML/Audio/OpenAL.hpp:74: error: ‘ALenum’ was not declared in this scope
../../SFML/Audio/OpenAL.hpp:74: error: expected `;' before ‘ErrorCode’
../../SFML/Audio/OpenAL.hpp:76: error: ‘ErrorCode’ was not declared in this scope
../../SFML/Audio/OpenAL.hpp:76: error: ‘AL_NO_ERROR’ was not declared in this scope
../../SFML/Audio/OpenAL.hpp:83: error: ‘AL_INVALID_NAME’ was not declared in this scope
../../SFML/Audio/OpenAL.hpp:90: error: ‘AL_INVALID_ENUM’ was not declared in this scope
../../SFML/Audio/OpenAL.hpp:97: error: ‘AL_INVALID_VALUE’ was not declared in this scope
../../SFML/Audio/OpenAL.hpp:104: error: ‘AL_INVALID_OPERATION’ was not declared in this scope
../../SFML/Audio/OpenAL.hpp:111: error: ‘AL_OUT_OF_MEMORY’ was not declared in this scope
In file included from AudioDevice.cpp:28:
../../SFML/Audio/AudioDevice.hpp: At global scope:
../../SFML/Audio/AudioDevice.hpp:78: error: ISO C++ forbids declaration of ‘ALCdevice’ with no type
../../SFML/Audio/AudioDevice.hpp:78: error: expected ‘;’ before ‘*’ token
../../SFML/Audio/AudioDevice.hpp:88: error: ‘ALenum’ does not name a type
../../SFML/Audio/AudioDevice.hpp:112: error: ISO C++ forbids declaration of ‘ALCdevice’ with no type
../../SFML/Audio/AudioDevice.hpp:112: error: expected ‘;’ before ‘*’ token
../../SFML/Audio/AudioDevice.hpp:113: error: ISO C++ forbids declaration of ‘ALCcontext’ with no type
../../SFML/Audio/AudioDevice.hpp:113: error: expected ‘;’ before ‘*’ token
AudioDevice.cpp: In constructor ‘sf::priv::AudioDevice::AudioDevice()’:
AudioDevice.cpp:52: error: ‘myDevice’ was not declared in this scope
AudioDevice.cpp:52: error: ‘alcOpenDevice’ was not declared in this scope
AudioDevice.cpp:57: error: ‘myContext’ was not declared in this scope
AudioDevice.cpp:57: error: ‘alcCreateContext’ was not declared in this scope
AudioDevice.cpp:62: error: ‘alcMakeContextCurrent’ was not declared in this scope
AudioDevice.cpp: In destructor ‘sf::priv::AudioDevice::~AudioDevice()’:
AudioDevice.cpp:86: error: ‘alcMakeContextCurrent’ was not declared in this scope
AudioDevice.cpp:87: error: ‘myContext’ was not declared in this scope
AudioDevice.cpp:88: error: ‘alcDestroyContext’ was not declared in this scope
AudioDevice.cpp:91: error: ‘myDevice’ was not declared in this scope
AudioDevice.cpp:92: error: ‘alcCloseDevice’ was not declared in this scope
AudioDevice.cpp: At global scope:
AudioDevice.cpp:143: error: expected constructor, destructor, or type conversion before ‘*’ token
AudioDevice.cpp:152: error: ‘ALenum’ does not name a type
make[2]: *** [AudioDevice.o] Error 1
make[2]: Leaving directory `/root/SFML-1.6/src/SFML/Audio'
make[1]: *** [sfml-audio] Error 2
make[1]: Leaving directory `/root/SFML-1.6/src/SFML'
make: *** [sfml] Error 2
root@bt:~/SFML-1.6#  

Like there is a bug in AudioDevice.cpp??
Please tell me how to solve this problem.

Thanks in advance!

3

General / Good Collision detection technique?

« on: April 19, 2011, 03:20:20 pm »

Hi,

I was creating some sort of game and I got a problem with my collision detection technique. Here is how I check the collision:

Code: [Select]


bool f_CheckCollision(c_Object A, c_Object B)
{
float leftA, leftB;
float rightA, rightB;
float topA, topB;
float bottomA, bottomB;
leftA = A.x;
leftB = B.x;
rightA = A.x + A.w;
rightB = B.x + B.w;
topA = A.y;
topB = B.y;
bottomA = A.y + A.h;
bottomB = B.y + B.h;
//If any of the sides from A are outside of B
    if( bottomA <= topB )
    {
        return false;
    }
   
    if( topA >= bottomB )
    {
        return false;
    }
   
    if( rightA <= leftB )
    {
        return false;
    }
   
    if( leftA >= rightB )
    {
        return false;
    }
   
    //If none of the sides from A are outside B
    return true;
}


It works ok If my object goes straight on X, or Y but when I press two arrows like UP and DOWN and my object goes trough the wall.
So is there a better way of checking collision between two objects but does not use much of CPU?

Thanks in advance!

4

Graphics / Access Violation Problem

« on: April 16, 2011, 02:08:19 am »

Fixed... :lol: It was set to Debug and when I set it to Release than it worked OK.

5

Graphics / Access Violation Problem

« on: April 16, 2011, 01:35:52 am »

I also have SFML 1.6, Using Visual C++ 2008 Express

6

Graphics / Access Violation Problem

« on: April 16, 2011, 12:16:42 am »

Hi,

I'm new here I've started to learn SFML and now I've encountered a problem that I don't know how to solve?

Code: [Select]


First-chance exception at 0xeeffee01 in SFML_Test.exe: 0xC0000005: Access violation.
Unhandled exception at 0xeeffee01 in SFML_Test.exe: 0xC0000005: Access violation.


Here is the code of my app:

Code: [Select]


#include <SFML/System.hpp>
#include <SFML/Window.hpp>
#include <SFML/Graphics.hpp>
#include <iostream>
//-------------------------------------------------------------------------------------------------------------------
#pragma comment(lib,"sfml-system-s.lib")
#pragma comment(lib,"sfml-window-s.lib")
#pragma comment(lib,"sfml-graphics-s.lib")
//-------------------------------------------------------------------------------------------------------------------
using namespace std;
//-------------------------------------------------------------------------------------------------------------------
sf::RenderWindow App;
sf::Event Event;
sf::Clock Clock;
//-------------------------------------------------------------------------------------------------------------------
const float Speed = 50.f;
//-------------------------------------------------------------------------------------------------------------------
float x = 0.f;
float y = 0.f;
float rot = 0.f;
float zaFPS = 0.f;
float FPS = 0.f;
//-------------------------------------------------------------------------------------------------------------------
void f_Clock();
void f_Render();
void f_DrawAll();
void f_HandleEvents();
void f_Init();
//-------------------------------------------------------------------------------------------------------------------
void f_Clock()
{
zaFPS = Clock.GetElapsedTime();
FPS = 1.f / Clock.GetElapsedTime();
Clock.Reset();
}
//-------------------------------------------------------------------------------------------------------------------
void f_Render()
{
App.Display();
}
//-------------------------------------------------------------------------------------------------------------------
void f_DrawAll()
{
App.Clear(sf::Color(200, 0, 0));
}
//-------------------------------------------------------------------------------------------------------------------
void f_HandleEvents()
{
while(App.GetEvent(Event))
{
// Window closed
        if (Event.Type == sf::Event::Closed)
            App.Close();

        // Escape key pressed
        if ((Event.Type == sf::Event::KeyPressed) && (Event.Key.Code == sf::Key::Escape))
            App.Close();

}

if( App.GetInput().IsKeyDown(sf::Key::Left) ) x -= Speed * zaFPS; // LEVO
if( App.GetInput().IsKeyDown(sf::Key::Right) ) x += Speed * zaFPS;        // DESNO
if( App.GetInput().IsKeyDown(sf::Key::Up) ) y += Speed * zaFPS; // GORE
if( App.GetInput().IsKeyDown(sf::Key::Down) ) y -= Speed * zaFPS; // DOLE

}
//-------------------------------------------------------------------------------------------------------------------
void f_Init()
{
App.Create(sf::VideoMode(800, 600, 32), "SFML Window");
App.SetFramerateLimit(60);

}
//-------------------------------------------------------------------------------------------------------------------
int main()
{
f_Init();

while(App.IsOpened())
{
f_Clock();
f_HandleEvents();

cout << "X: " << x << "  Y: " << y << " FPS: " << FPS << endl;
f_DrawAll();
f_Render();
}
return 0;
}
//-------------------------------------------------------------------------------------------------------------------


I get the problem above when my app reaches the f_DrawAll() and tries to execute App.Clear(sf::Color(200, 0, 0)); .

So any idea how to fix this problem?

Best Regards!