Topics

1

General / The application was unable to start correctly (0xc0000000d).

« on: May 24, 2011, 12:15:11 am »

So. My old development machine finally kicked the bucket. I'm on a new machine, a (somewhat) new environment, and trying to compile a program that worked just fine on the old machine on this new one.

The old machine was:
- Windows 7 basic (or whatever the very lowest version was)
- 32 bit
- Linking the static sfml2 libraries
- Using VS2010 express
- Worked like a champ!

The new machine is:
- Windows 7 ultimate
- 64 bit
- Linking the dynamic sfml2 libraries, which I re-compiled on this machine
- Still using VS2010 express
- Not working!

The program compiles just fine, but the second it starts, it crashes with the very helpful error message in the title.

Any ideas?

2

Audio / Passing sound buffers as references

« on: April 09, 2011, 06:25:05 pm »

So, I have a global resource manager. It has worked well with sprites so far, using the approach:
- Resource manager has sf::Image instances
- Any sprite that needs an image calls a reference to the appropriate sf::Image to use with SetImage

I tried doing the same with audio:
- Resource manager has sf::SoundBuffer instances, which load from files
- Any sf::Sound that needs to play first calls get_sound_buffer with the appropriate filename.

If I do this in main:

Code: [Select]

sf::SoundBuffer buf;
buf.LoadFromFile("Sounds\\Land.wav");
sf::Sound sound;
sound.SetBuffer(buf);
sound.Play();
while(sound.GetStatus() == sf::Sound::Status::Playing) { }

It works just fine.

However, when I try and use the resource manager:

Code: [Select]

file_cabinet.cpp:
(in the constructor) sound_map["ground_collide"].LoadFromFile("Sounds\\Land.wav");

sf::SoundBuffer &file_cabinet::get_sound_buffer(const std::string &Filename) {
    return sound_map[Filename];
}

(this is exactly the same as my get_image function, only replacing sf::Image with sf::SoundBuffers)

later, when I need to use a sound buffer:

Code: [Select]

sf::Sound sound;
sound.SetBuffer(file_cabinet.get_sound_buffer("Sounds\\Land.wav"));
sound.Play();
while(sound.GetStatus() == sf::Sound::Status::Playing) {}

wherever I need to invoke file_cabinet, I pass in a reference to the one file_cabinet object that exists, which is instantiated in main. This doesn't work -- there are no errors, but sounds do not play.

Is there something tricky I need to keep in mind for sound buffers?

3

Graphics / sf::priv::MutexImpl::Lock() Access Violation

« on: April 09, 2011, 01:18:55 am »

I updated my files from SFML 1.6 to 2.0. The program worked okay before; after making some necessary modifications because of the new code, my first run crashes.

Call stack:

Code: [Select]

ntdll.dll!76eb69e0()
  [Frames below may be incorrect and/or missing, no symbols loaded for ntdll.dll]
> Mindjob.exe!sf::priv::MutexImpl::Lock()  Line 52 + 0xc bytes C++
  Mindjob.exe!sf::Mutex::Lock()  Line 62 C++
  Mindjob.exe!sf::Lock::Lock(sf::Mutex & mutex)  Line 39 C++
  Mindjob.exe!sf::GlResource::GlResource()  Line 53 + 0xd bytes C++
  Mindjob.exe!sf::Image::Image()  Line 52 + 0x47 bytes C++
  Mindjob.exe!std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,sf::Image,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,sf::Image> > >::operator[](const std::basic_string<char,std::char_traits<char>,std::allocator<char> > & _Keyval)  Line 215 + 0xb bytes C++
  Mindjob.exe!mj_file_cabinet::mj_file_cabinet()  Line 7 + 0x3e bytes C++
  Mindjob.exe!`dynamic initializer for 'cabinet''()  Line 20 + 0x28 bytes C++
  Mindjob.exe!_initterm(void (void)* * pfbegin, void (void)* * pfend)  Line 873 C
  Mindjob.exe!_cinit(int initFloatingPrecision)  Line 288 + 0xf bytes C
  Mindjob.exe!__tmainCRTStartup()  Line 262 + 0x7 bytes C
  Mindjob.exe!wmainCRTStartup()  Line 189 C
  kernel32.dll!75a91194()
  ntdll.dll!76ecb429()
  ntdll.dll!76ecb3fc()


The code in question (if I'm reading the call stack right):

Code: [Select]

mj_file_cabinet::mj_file_cabinet() {
// load our images
// TODO: error handling
image_map["megaman"].LoadFromFile("Sprite Sheets\\x_cut.jpg");
image_map["platform_1"].LoadFromFile("Sprite Sheets\\platform_1.png");
image_map["platform_2"].LoadFromFile("Sprite Sheets\\platform_2.png");

//load our sounds
//TODO: error handling here too
sound_map["ground_collide"].LoadFromFile("Sounds\\Land.wav");
}

"image_map" is declared in the header as std::map<std::string, sf::Image>.

Any ideas?

4

General / Unresolved linker externals

« on: April 07, 2011, 05:33:41 am »

Since I'm sure you guys get tons and tons of linker questions, I'll try and keep this snappy!

Environment:
- SFML 2 (latest Git download as of ~2330 EST on april 6th)
- Used CMake to generate a VS2010 project
- Used make and make-install in said VS2010 project; everything appeared to propagate correctly (odd sidenote: VS2010 didn't load an appropriate "make clean" build?)

Settings:
Preprocessor: SFML_STATIC
Linked files:

Code: [Select]

sfml-window-s-d.lib
sfml-graphics-s-d.lib
sfml-system-s-d.lib
sfml-audio-s-d.lib
Build type: Debug

The build output:
EDIT: Since the output was waaaaay larger than I thought, I put it all in a pastebin here.

5

Audio / libsndfile-1.dll causing a heap corruption?

« on: April 07, 2011, 03:36:48 am »

So I have in my program the line:

Code: [Select]


file_cabinet.h:

sound_map["ground_collide"].LoadFromFile("Sounds\\Land.wav");
sf::SoundBuffer &get_sound_buffer(std::string filename);



sound_map is a map<std::string, sf::SoundBuffer>.

later in another file:

Code: [Select]


sf::Sound sound;
sound.SetBuffer(file_cabinet.get_sound_buffer("Sounds\\Land.wav"));
sound.Play();


If I leave everything in, the application throws a heap corruption.

If I uncomment everything but the LoadFromFile line, it still throws it. If I uncomment only that line, it doesn't throw it, which says to me that something in LoadFromFile is going wrong.

The call trace:

Code: [Select]



  ntdll.dll!76e64513()
  msvcrt.dll!763198cd()
  libsndfile-1.dll!6f145dc1()
> Mindjob.exe!wmainCRTStartup()  Line 371 C
  kernel32.dll!76231194()
  ntdll.dll!76dfb429()
  ntdll.dll!76dfb3fc()



I triple-checked to make sure that there aren't any conflicting versions of libsndfile-1.dll or openal32.dll.

edit: To answer what I'm sure are common questions ...
- I made sure early on in the project that I haven't mixed up debug and release versions of the SFML libraries (I had to recompile them since the FAQ said that there were no current versions available for VC 2010).
- I'm using the libsndfile-1.dll and openal32.dll that are linked in the VC 2008 version of the C++ 1.6 package.

6

Graphics / Blank (white) Sprite -- can I pass a SubRect?

« on: March 30, 2011, 09:19:24 pm »

Hello friends,

My code's process is (in a nutshell) like so:
- a Player class declares and initializes an Animator class
- the Animator class holds said Player's sprite sheet, and is, among other things, responsible for passing back the appropriate sprite to draw at any given time
- the game requests said sprite whenever it needs to draw.

My sprite is showing up as a blank white box. My current theory is that the sprite's image is going out of scope at some point, but I can't figure out where.

Here are (I hope all of) the relevant bits (a bunch of fluff taken out unless requested):

mj_animator.h

Code: [Select]

class mj_animator
{
public:
    mj_animator(const std::string &Filename ... );
    mj_animator();
    sf::Sprite get_sprite();
private:
    sf::Sprite sprite_sheet;
    sf::Image img;
}


mj_animator.cpp

Code: [Select]

mj_animator::mj_animator(const std::string &Filename, ...) {
    if(! img.LoadFromFile(Filename)) {
        // error handling stuff
    }
    sprite_sheet.SetImage(img);
}

sf::Sprite mj_animator::get_sprite() {
    // some calculations to determine x1, y1, x2, y2 of an IntRect
    sprite_sheet.SetSubRect(sf::IntRect(x1, y1, x2, y2));
    return sprite_sheet;
}


mj_player.cpp

Code: [Select]

mj_player::mj_player(sf::Image sheet) {
    //animators is an array of mj_animators objects (in mj_player.h)
    animators[0] = mj_animator("file.jpg", ...);
    animators[1] = mj_animator("file.jpg", ...);
    current_animator = 1; //an int to track which animator currently being used
}

// ... some functions to determine which animator we need to have going at any given time, etc

mj_player::Draw(sf::RenderWindow &App) {
    // some calculations to determine current position
    sf::Sprite draw_sprite = animators[current_animator].get_sprite();
    draw_sprite.SetPosition(position.x, position.y);
    App.Draw(draw_sprite);
}


If there's anything you think you need, I'll put it -- I didn't include a lot of what I think is unrelated because it's already a fairly bloated post.

My best guess, as I said, is that either somewhere in the process, the image goes out of scope, or that I can't pass sprite_sheet back as I think I can.

Any guesses? Thanks.

edit:
I should note that through some debugging (read: a bunch of couts), I did determine that the math that I didn't include here is actually all correct -- that the SubRect is being correctly calculated, so it's not trying to draw some weird part of the image that doesn't exist or anything like that.