Messages

1

Audio / Re: playing sounds simultaneously

« on: February 25, 2017, 05:29:12 pm »

That is what I was looking for. Some other views of the same point. Thank you.

2

Audio / Re: playing sounds simultaneously

« on: February 07, 2017, 04:11:35 pm »

Thank you for your post.

Is it established practice to do it like you suggested?
I mean, it's like let clean up the gabrage of anyone's work from anyone else.

3

Audio / playing sounds simultaneously

« on: October 16, 2016, 11:41:58 pm »

Hey,
I was looking for a good way to play sounds simultaneously with SFML.
After googeling I found a post from nexus (http://en.sfml-dev.org/forums/index.php?topic=6697.0). He only gave a hint: Push the playing sounds into a queue and pop them if they reached the status sf::Sound::Status::Stopped.
I thought, that's a good idea, so I tryed to programm a general solution to this problem:

(click to show/hide)

#include "stdafx.h"
class SoundManager
{
private:
        using lock_t = std::lock_guard<std::mutex>;

public:
        SoundManager();
        ~SoundManager();
        void registerSound(const sound_id_t id, const sf::SoundBuffer& sound_buffer);
        void play(const sound_id_t id);

private:
        void th_worker();

        std::atomic<bool> m_Running;
        std::mutex m_Mutex;
        std::map<sound_id_t, std::tuple<sf::Sound, std::queue<sf::Sound>>> m_ListSounds;
        // m_Thread have to be the last member (because only that way it can be secured that
        // th_worker gets executed after the SoundManager initilizer has initialized all his members)
        std::thread m_Thread;
};

(click to show/hide)

#include "SoundManager.h"

SoundManager::SoundManager()
        : m_Running(true)
        , m_Thread(std::bind(&SoundManager::th_worker, this))
{
}
SoundManager::~SoundManager()
{
        m_Running = false;
        m_Thread.join();
}
void SoundManager::th_worker()
{
        while (m_Running)
        {
                {
                        lock_t lock(m_Mutex);
                        for (auto& tuple_sound : m_ListSounds)
                        {
                                auto& queue_sound = std::get<1>(tuple_sound.second);
                                if (!queue_sound.empty())
                                {
                                        if (queue_sound.front().getStatus() == sf::Sound::Status::Stopped)
                                        {
                                                queue_sound.pop();
                                        }
                                }
                        }
                }
                std::this_thread::sleep_for(std::chrono::milliseconds(1));
        }
}
void SoundManager::registerSound(const sound_id_t id, const sf::SoundBuffer& sound_buffer)
{
        m_ListSounds.insert
        (
                std::make_pair
                (
                        id,
                        std::make_tuple
                        (
                                sf::Sound
                                (
                                        sound_buffer
                                ),
                                std::queue<sf::Sound>()
                        )
                )
        );
}
void SoundManager::play(const sound_id_t id)
{
        lock_t lock(m_Mutex);
        auto& iter = m_ListSounds.find(id);
        assert(iter != m_ListSounds.end());
        auto& queue_sounds = std::get<1>(iter->second);
        queue_sounds.push(std::get<0>(iter->second));
        queue_sounds.back().play();
}

Everything is working fine and anyone can feel free to use it.
The thing I want to know is, what do you think about this solution? May be there are some better out there?

regards

Julian

4

General / Re: Unresolved External Symbols

« on: October 03, 2016, 09:51:15 pm »

This error arises when you link wrong msvc libraries to a executable.
May be this helps:
http://hintslibrary.blogspot.de/2014/02/error-lnk2001-unresolved-external.html

5

General / Re: SFML on linux-mint

« on: December 10, 2015, 06:08:46 pm »

After 6 hours of trying, I decided to post here.
Now I fixed the problem after 30 mins.
Obviously make install doesn't install the libstdc++.so.6.0.21. So I copy that file to /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21, and now it works.

6

General / SFML on linux-mint

« on: December 10, 2015, 05:44:56 pm »

Hi,
i recently installed linux mint and tryed to get sfml work on it.
But before I tryed to make sfml work, I installed the newest Version of the GCC-toolchain (GCC 5.3.0).
Cause I read that GNU somewhen changed some APIs in the GCC-API, I compiled SFML by myself (everything worked fine till now).
But now, if I compile a test-sfml project:

#include <SFML/Graphics.hpp>

int main()
{
    sf::RenderWindow window(sf::VideoMode(200, 200), "SFML works!");
    sf::CircleShape shape(100.f);
    shape.setFillColor(sf::Color::Green);

    while (window.isOpen())
    {
        sf::Event event;
        while (window.pollEvent(event))
        {
            if (event.type == sf::Event::Closed)
                window.close();
        }

        window.clear();
        window.draw(shape);
        window.display();
    }

    return 0;
}

With

g++ main.cpp -DSFML_STATIC -Wl,-Map,mapfile.txt -L/usr/lib/gcc/x86_64-unknown-linux-gnu/5.3.0/ -lGL -lX11 -lX11-xcb -ljpeg -lxcb -lxcb-randr -lxcb-image -ludev -lpthread -lFLAC -logg -lfreetype -lopenal -lvorbis -lvorbisenc -lvorbisfile -lsfml-graphics-s -lsfml-window-s -lsfml-system-s

And run the executable I'm getting the this error:

./a.out: relocation error: ./a.out: symbol _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE10_M_replaceEmmPKcm, version GLIBCXX_3.4.21 not defined in file libstdc++.so.6 with link time reference
 

In the mapfile.txt everything looks fine (the right libaries are getting linked) and if I run

strings libstdc++.so | grep _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE10_M_replaceEmmPKcm

I get this output:

_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE10_M_replaceEmmPKcm
_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE10_M_replaceEmmPKcm
_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE10_M_replaceEmmPKcm
 

However I suppose, I'm getting this error cause I mixed up some libraries, but if that's in case, how I can figure it out correctly?
Or anyone have other ideas?

Thanks

Julian

7

Graphics / Re: sf::Shape, sf::Text and sf::Sprite Baseclass suggestion

« on: September 06, 2015, 12:10:03 pm »

And please get rid of Hungarian Notation, it makes no sense in modern C++.

It's legacy code.

8

Graphics / sf::Shape, sf::Text and sf::Sprite Baseclass suggestion

« on: September 06, 2015, 11:55:50 am »

Hey,
i found something which raises questions me.
And that's my storry:
I'm trying to writing a little Button-"Framework". Each of my Button-Objects can have a Graphic-Object, doesn't matter what (shape, text or maybe a sprite?).
So i looked for a common base class, the two common base class of each of that three classes are sf::Drawable and sf::Transformable.
But if i want to draw the Text, Shape or what ever in my Button-Object i have to choose (because the sf::Drawable draw function only takes sf::Drawable-References) the Drawable-Baseclass, which leads me to use dynamic_cast if i want to know where my Shape, Text or what ever is located (because i need the functions out of the sf::Transformable-Baseclass):

sf::Sprite* sp = dynamic_cast<sf::Sprite*>(m_pVisualization);
sf::Text* text = dynamic_cast<sf::Text*>(m_pVisualization);
m_bBorderIsReadyToDraw = true;
if (sp)
{
        m_pMouseOver->setPosition(sp->getPosition());
}
else if (text)
{
        m_pMouseOver->setPosition(text->getPosition());
}

So why we can't say each Transformable is Drawable too?
I think it's a applicateable statement?

Cheers

9

General discussions / Re: Building SFML for Visual Studio 2015

« on: July 24, 2015, 08:07:29 pm »

I wrote that i compiled each of the extlibs by my self. I haven't any linker errors anymore.

10

General discussions / Re: Building SFML for Visual Studio 2015

« on: July 24, 2015, 07:07:10 pm »

Thanks eXpl0it3r for that hint.

But i now compiled each of the extlibs by my self. Now the linker can resolve the symbols correctly. But i have two more questions better said 1 question and 1 problem:
1. the question:
if i download a SFML Visual Studio build, for instance the Visual Studio 2013 build, i allways only have 1 build for the extlbis. I don't understand why only one build? What happens if the extlibs are compiled with the option /MD and the Exectuable with /MDd? Whouldn't appear some symbol conflicts in that case?

2. the problem:
if SFML creates a GLContext i get the fallowing warning message in the contex-check-SFML-function:

Warning: The created OpenGL context does not fully meet the settings that were requested
Requested: version = 1.1 ; depth bits = 0 ; stencil bits = 0 ; AA level = 32 ; core = false ; debug = false
Created: version = 4.5 ; depth bits = 0 ; stencil bits = 0 ; AA level = 16 ; core = false ; debug = false

Why OpenGL can't setup the context correctly?

11

General discussions / Re: Building SFML for Visual Studio 2015

« on: July 22, 2015, 09:08:24 pm »

Ok that Thread i didn't find about 3 hours googeling.
But god dam compiling jpeglib doesn't seems that easy.

12

General discussions / Re: Building SFML for Visual Studio 2015

« on: July 22, 2015, 08:52:52 pm »

I don't find something, but http://en.sfml-dev.org/forums/index.php?topic=18243.msg131275#msg131275, he obviosly did it. But that's no help for me.

13

General discussions / Building SFML for Visual Studio 2015

« on: July 22, 2015, 08:32:21 pm »

Hi,
i try to use Visual Studio 2015 tools to compile SFML. I do that by using cmake:

cmake -G"NMake Makefiles" C:\Libraries\SFML-2.3.1
nmake

But no matter whether i try to build SFML by nmake or by a sln, i allways getting the following unresolved symbols:

jpeg.lib(jerror.obj) : error LNK2001: unresolved external symbol _sprintf
jpeg.lib(jerror.obj) : error LNK2019: unresolved external symbol ___iob_func referenced in function _output_message
jpeg.lib(jmemmgr.obj) : error LNK2019: unresolved external symbol _sscanf referenced in function _jinit_memory_mgr

in sfml-graphics-2.dll.
What i am doing wrong? Are the by SFML provided jpeg.lib incompatible to the VS15 libs?

14

Window / Re: update the Window while it isn't selected

« on: May 10, 2014, 10:39:43 am »

Ok i think i understand. Thank you.

15

Window / Re: update the Window while it isn't selected

« on: May 10, 2014, 12:16:29 am »

Not the ratio of my View, i mean the ratio of my Window, i know the tutorial already. And i want show the changes in realtime, so i haveto catch the WM_SIZING - Message. I don't know another reason.