What do you need help with? Version 1

[NorthernGate]

Threw together a quick function to set any tiles that the player can't see to not be rendered, can anyone look over it and see if there's any faster way?

[cpp]void Cluster::Purge( int x, int y )
{
int LowestPoint = 0;

for( int z = Size.z - 1; z >= 0 && z < Size.z && LowestPoint == 0; z-- )
if( Tiles[x][y][z].IsOpaque() )
LowestPoint = z;

if( LowestPoint != 0 )
for( int z = 0; z < LowestPoint && z > 0; z++ )
Tiles[x][y][z].IsVisible = false;
}[/cpp]

[Richy13]

Are there any APIs or libraries for c++ to be able to get hardware/system information?

[ZeekyHBomb]

The systems API :P
Seriously though, I couldn't google one, neither have I heard of one.
Depending on the specific information you require there might be cross-platform wrappers, e.g. Boosts boost::thread::hardware_concurrency() that returns the number of hardware-threads available.

[ROBO_DONUT]

[QUOTE=NorthernGate;23972649]Threw together a quick function to set any tiles that the player can't see to not be rendered, can anyone look over it and see if there's any faster way?

[cpp]void Cluster::Purge( int x, int y )
{
int LowestPoint = 0;

for( int z = Size.z - 1; z >= 0 && z < Size.z && LowestPoint == 0; z-- )
if( Tiles[x][y][z].IsOpaque() )
LowestPoint = z;

if( LowestPoint != 0 )
for( int z = 0; z < LowestPoint && z > 0; z++ )
Tiles[x][y][z].IsVisible = false;
}[/cpp][/QUOTE]
Not really. You could eliminate the "LowestPoint" variable (and the unnecessary assignment that goes with it), but the difference is probably only a few clock cycles (i.e. nothing):
[cpp]void Cluster::Purge( int x, int y )
{
int z = Size.z;
while (z-- > 0) {
if( Tiles[x][y][z].IsOpaque() ) {
break;
}
}

while (z-- > 0) {
Tiles[x][y][z].IsVisible = false;
}
}[/cpp]
You could also replace the IsOpaque method with direct access to a variable (like IsVisible), which would save the overhead associated with calling a subroutine. Again, you would never, ever, ever be able to tell the difference.

[Richy13]

Any of you guys know of any good online OpenGL tutorials?

[ROBO_DONUT]

[QUOTE=Richy19;23998922]Any of you guys know of any good online OpenGL tutorials?[/QUOTE]

The NeHe tutorials used to be good, but they might be outdated now. When I read them they mostly discussed fixed-function pipeline stuff, which is deprecated in the newer OpenGL standards.

There are many tutorials in the old style of OpenGL. If a tutorial uses glBegin/glEnd, it's old, and you shouldn't use it.

[blankthemuffin]

They're (nehe tutorials) horribly outdated and were pretty terrible in the first place. Don't even bother reading them.

[editline]01:42PM[/editline]

This is a reasonable reference:
[url]http://duriansoftware.com/joe/An-intro-to-modern-OpenGL.-Chapter-1:-The-Graphics-Pipeline.html[/url]

[turb_]

Does anyone know of any Hadoop libraries for .NET?

[Pirate Ninja]

[QUOTE=turb_;24003964]Does anyone know of any Hadoop libraries for .NET?[/QUOTE]

Something like [URL="http://code.google.com/p/qizmt/"]this[/URL]?

[turb_]

[QUOTE=Pirate Ninja;24005414]Something like [URL="http://code.google.com/p/qizmt/"]this[/URL]?[/QUOTE]

Thanks, but not really what I'm looking for.

I need something (doesn't matter what it's written in, preferably runs on Windows and Linux) that has a .NET library available for distributed file storage.

Maybe there's a better option than Hadoop for what I need?

[Pirate Ninja]

[QUOTE=turb_;24005525]Thanks, but not really what I'm looking for.

I need something (doesn't matter what it's written in, preferably runs on Windows and Linux) that has a .NET library available for distributed file storage.

Maybe there's a better option than Hadoop for what I need?[/QUOTE]

[URL="http://www.ohloh.net/p/HDFS_NET"]Then maybe this is for you.[/URL]

[turb_]

[QUOTE=Pirate Ninja;24005855][URL="http://www.ohloh.net/p/HDFS_NET"]Then maybe this is for you.[/URL][/QUOTE]

Looks fairly sketchy.

Not sure I'd want to base my business around it.

[Pirate Ninja]

Well i don't know if this is exactly related but windows server seems to have a built in DFS system, [URL="http://geekswithblogs.net/jkhines/articles/article-access-dfs-from-.net.aspx"]check this out.[/URL]

Edit:

Also check [URL="http://kosmosfs.sourceforge.net/"]this [/URL]and [URL="http://technet.microsoft.com/en-us/library/bb727150.aspx"]this[/URL]

[Richy13]

Anyone know good tutorials on setting up GLUT, GLEW & SFML on code::blocks?

[Pirate Ninja]

[QUOTE=Richy19;24006198]Anyone know good tutorials on setting up GLUT, GLEW & SFML on code::blocks?[/QUOTE]

1. Why all of these, sfml should be sufficient!?
2. [LIST=1]
[*][url]http://www.sfml-dev.org/tutorials/1.2/start-cb.php[/url]
[*][url]http://www.sci.brooklyn.cuny.edu/~goetz/codeblocks/glut/[/url]
[*][url]http://glew.sourceforge.net/install.html[/url]
[/LIST]

Use google next time please.

[Richy13]

I did use it, i tried various tutorials but none worked
and can you us openGL and make 3d graphics with SFML?

[NorthernGate]

[QUOTE=Pirate Ninja;24006294]1. Why all of these, sfml should be sufficient!?
2. [LIST=1]
[*][url]http://www.sfml-dev.org/tutorials/1.2/start-cb.php[/url]
[*][url]http://www.sci.brooklyn.cuny.edu/~goetz/codeblocks/glut/[/url]
[*][url]http://glew.sourceforge.net/install.html[/url]
[/LIST]

Use google next time please.[/QUOTE]

Might want to link him to the tutorials on the latest build of SFML ( 1.6 or 2.0 ) than 1.2...

[editline]02:32AM[/editline]

[QUOTE=Richy19;24006321]I did use it, i tried various tutorials but none worked
and can you us openGL and make 3d graphics with SFML?[/QUOTE]

Yeah, though it's not very efficient. And you should go into it a bit more than "none worked", there's no way anyone can help you when you're that vague.

[Richy13]

Tried linking SFML again but it didn't work so i gave up and tried using the SFML template but when i select the SFML location it says it cant find audio.hpp
Any thoughts?

[turb_]

[QUOTE=Pirate Ninja;24005928]Well i don't know if this is exactly related but windows server seems to have a built in DFS system, [URL="http://geekswithblogs.net/jkhines/articles/article-access-dfs-from-.net.aspx"]check this out.[/URL]

Edit:

Also check [URL="http://kosmosfs.sourceforge.net/"]this [/URL]and [URL="http://technet.microsoft.com/en-us/library/bb727150.aspx"]this[/URL][/QUOTE]

I might look into Microsoft DFS.

Hopefully Samba can work with it, although it isn't a show stopper if it doesn't

[blankthemuffin]

[QUOTE=Pirate Ninja;24006294]1. Why all of these, sfml should be sufficient!?
2. [LIST=1]
[*][url]http://www.sfml-dev.org/tutorials/1.2/start-cb.php[/url]
[*][url]http://www.sci.brooklyn.cuny.edu/~goetz/codeblocks/glut/[/url]
[*][url]http://glew.sourceforge.net/install.html[/url]
[/LIST]

Use google next time please.[/QUOTE]

Uh well, SFML will do the windowing, but it won't do GL extension handling. So if the goal was to write OpenGL you want GLEW as well.

[Overv]

[QUOTE=NorthernGate;24006340]Yeah, though it's not very efficient. And you should go into it a bit more than "none worked", there's no way anyone can help you when you're that vague.[/QUOTE]

What's not efficient about it?

[Iskuri]

Hmm I am a bit apprehensive about asking about this as it has probably been asked before. Does anyone here know of any good tutorials for Neural Networking, I get the basic premise and structure but not how to use them and their structure, even a bit of pseudocode would help, I have scoured google and have not found any truly concise tutorials on the subject, most of them seem to be using specific programs made to utilise neural networks. Thanks.

[Richy13]

Ok so i followed this guide word by word using the add compiler and linker files method

[URL="http://www.sfml-dev.org/tutorials/1.6/start-cb.php"]http://www.sfml-dev.org/tutorials/1.6/start-cb.php[/URL]

And tried this code as the guide says to:

#include <SFML/System.hpp>
#include <iostream>

int main()
{
    sf::Clock Clock;
    while (Clock.GetElapsedTime() < 5.f)
    {
        std::cout << Clock.GetElapsedTime() << std::endl;
        sf::Sleep(0.5f);
    }

    return 0;
}

But it just gave me these errors:

obj\Debug\main.o||In function `main':|
C:\Users\Me\Documents\Code blocks\sfml testtt\main.cpp|6|undefined reference to `sf::Clock::Clock()'|
C:\Users\Me\Documents\Code blocks\sfml testtt\main.cpp|9|undefined reference to `sf::Clock::GetElapsedTime() const'|
C:\Users\Me\Documents\Code blocks\sfml testtt\main.cpp|10|undefined reference to `sf::Sleep(float)'|
C:\Users\Me\Documents\Code blocks\sfml testtt\main.cpp|7|undefined reference to `sf::Clock::GetElapsedTime() const'|
||=== Build finished: 4 errors, 0 warnings ===|

Anyone???

[Blade]

Is there a way to have notepad++'s "find results" sync when you edit a file? It is just annoying to have to keep researching when I am making a lot of edits.

[Richy13]

I got SFML working (PARTYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY!!!!!!!!!!!!!)
I had linked the files with Code::blocks but not with the project its self :P

[NorthernGate]

[QUOTE=Overv;24007150]What's not efficient about it?[/QUOTE]

I had never tried it myself, but from seeing other people mess with 3D in SFML and from reading other posts it seems like it's not as fast as it could/should be. As in you probably shouldn't be making a 3D game with it, but that's just what I read so I could be wrong.

[jA_cOp]

[QUOTE=NorthernGate;24015288]I had never tried it myself, but from seeing other people mess with 3D in SFML and from reading other posts it seems like it's not as fast as it could/should be. As in you probably shouldn't be making a 3D game with it, but that's just what I read so I could be wrong.[/QUOTE]

SFML doesn't make any assumptions about which OpenGL implementation you use, it only sets up a rendering context. It's as efficient as any other use of OpenGL (but again, it doesn't provide extensions).

[FerrisWheel]

I'm trying to read a bitmap file and display the contents in a human readable form in a text file (as an exercise). I've gotten past the headers and to the bmp data, but I use this loop to spew out the info, to little success.

[cpp]int c=0;
for(int i=data_start; i<size; i++)
{
if(c >= width)
{
c = 0;
outFile << "[" << (int)memblock[i] << "," << (int)memblock[i+1] << "," << (int)memblock[i+2] << "," << (int)memblock[i+3] << "]" << endl << endl;
i += 3;
}
else
{
outFile << "[" << (int)memblock[i] << "," << (int)memblock[i+1] << "," << (int)memblock[i+2] << "]" << endl;
i += 2;
c++;
}
}
[/cpp]

But my output is (first two rows of a 10x10 .bmp image in 100,0,0 colour):
[quote][0,0,100]
[0,0,100]
[0,0,100]
[0,0,100]
[0,0,100]
[0,0,100]
[0,0,100]
[0,0,100]
[0,0,100]
[0,0,100]
[0,0,0,0]

[100,0,0]
[100,0,0]
[100,0,0]
[100,0,0]
[100,0,0]
[100,0,0]
[100,0,0]
[100,0,0]
[100,0,0]
[100,0,0]
[0,0,100,0][/quote]
(it should be [100,0,0] 10 times and then the padding of [0,0,0,0] in each paragraph)

What's up with my code?

[ROBO_DONUT]

[QUOTE=FerrisWheel;24034652]I'm trying to read a bitmap file and display the contents in a human readable form in a text file (as an exercise). I've gotten past the headers and to the bmp data, but I use this loop to spew out the info, to little success.

[cpp]int c=0;
for(int i=data_start; i<size; i++)
{
if(c >= width)
{
c = 0;
outFile << "[" << (int)memblock[i] << "," << (int)memblock[i+1] << "," << (int)memblock[i+2] << "," << (int)memblock[i+3] << "]" << endl << endl;
i += 3;
}
else
{
outFile << "[" << (int)memblock[i] << "," << (int)memblock[i+1] << "," << (int)memblock[i+2] << "]" << endl;
i += 2;
c++;
}
}
[/cpp]

But my output is (first two rows of a 10x10 .bmp image in 100,0,0 colour):

(it should be [100,0,0] 10 times and then the padding of [0,0,0,0] in each paragraph)

What's up with my code?[/QUOTE]
Windows Bitmap? Are you writing the loader yourself or is memblock[] the output of some library you're using?
I think you have too much padding. You need to pad to the nearest multiple of four. For a ten-pixel width image this would be 10*3=30 bytes, and the closest multiple is 32, so you need 2 bytes of padding, not 4.

I have a [url=http://github.com/ml32/imghash/blob/master/src/ihash-img.c]working bitmap loader[/url] in an old library I was writing, if some example code would help. The relevant portion is ihash_img_load_bmp().

[Darwin226]

A question guys.
Arrays in C# aren't declared along with their size unlike in C++ where you can do int arr[5];
so I'm wondering what is the difference when used in a struct.

I'm assuming if I had a struct in C++ containing only int arr[5]; and made an instance of that struct it would reserve 5*sizeof(int) in memory. How does it work in C# and am I missing something crucial here?