tons of undeclared first use of this function errors :/

[Sard]

Ok, I've been poking around irrlicht via Dev-C++ I managet to do something with it and something I did not, which is the problem.

Topic is a bit misleading since I already fixed tons of errors due to tutorial authors typos... Not mad about typos I learned a bit while correcting those and now I know where to look for help.

But this one confuses me too much so making a thread sounded like a nice idea.

Code in question:

Code: Select all

#include "irrlicht.h"
#include <Smaterial.h>
#include <iostream>

#ifdef _MSC_VER
#pragma comment(lib, "Irrlicht.lib")
#endif

// Irrlicht Namespaces
using namespace irr;
using namespace core;
using namespace scene;
using namespace video;
using namespace io;
using namespace gui;


int main()
{
    IrrlichtDevice *irrDevice = createDevice(EDT_OPENGL,
                                          dimension2d<s32>(800, 600),
                                          32,
                                          false,
                                          false,
                                          0);
                                          
    irrDevice->setWindowCaption(L"Irrlicht 1.3.1");
    
    IVideoDriver* irrDriver = irrDevice->getVideoDriver();
    ISceneManager* irrSceneMgr = irrDevice->getSceneManager();
    ISceneManager* smgr = irrDevice->getSceneManager();
    
    irrDevice->getFileSystem()->addZipFileArchive("/media/pptp.pk3");
    
    IAnimatedMesh* mesh = smgr->getMesh("maps/gauntlet.bsp");
    ISceneNode* node = 0;
    
    if (mesh)
    node = smgr->addOctTreeSceneNode(mesh->getMesh(0), 0, -1, 128);
    if (node)
    node->setPosition(core::vector3df(-1300,-144,-1249));
    
    
          smgr->addCameraSceneNodeFPS();
          irrDevice->getCursorControl()->setVisible(false);
             
    while(irrDevice->run())
    { 
        irrDriver->beginScene(true, true, SColor(0,100,125,125));          
                irrSceneMgr->drawAll();
                irrGUIEnv->drawAll();
	    irrDriver->endScene();
	}
 
    irrDevice->drop();

    return(0);
}

While compiling this it says that "undeclared first use of blah blah 'irrGUIEnv'

Which is a bit odd, since it works on the tutorial to make a window without declaring it and with the same header files aswell.

Any help?

ps. The .pk3 file is in the .exe files subfolder called /media and the .bsp is in /maps folder in .pk3 are those ok?

[Sylence]

First, stop using Dev-C++. It's totally outdated and is no longer in development. Switch to Code::Blocks for example.

The error says that the compiler doesn't know about an object named 'irrGUIEnv' because you didn't define one.

Put this somewhere after the createDevice call:

Code: Select all

IGUIEnvrionment* irrGUIEnv = irrDevice->getGUIEnvironment();

That should do it.

Oh and btw: You have two pointers for the scene manager. You only need one. So you can remove one of the two pointers.

[rogerborg]

Personally, I'll be supporting the Code::Blocks builds, but not Dev-C++.

Just to clarify about tutorials, the best tutorials to use are the examples that come with your Irrlicht SDK (in the /examples directory). These are far more likely (I won't say guaranteed) to work without needing any modifications than some tutorial on the intartubes that might have been written years ago.

[Sard]

Ok, I got it to work as intended Wasn't quite that easy as Sylence said, but I changed the while loop on the bottom to something different (got it from a tutorial) and it worked nicely

For some reason I didn't know Dev-C++ isn't in dev anymore, need to figure out some new compiler to work with. Think I'll poke code::blocks a bit.

And yus, I'll be looking the examples folder a bit more now, thanks for the help!

[rogerborg]

For some reason I didn't know Dev-C++ isn't in dev anymore, need to figure out some new compiler to work with. Think I'll poke code::blocks a bit.

The lack of release dates makes it hard to tell.

Please be aware that C::B on Windows uses the same compiler as Dev-C++ (mingw). It's not a problem, but it's worthwhile being specific about the difference between an IDE and a compiler.

For Windows development, I still tend to recommend Microsoft Visual C++ Express, but Code::Blocks is a remarkably competent and usable IDE, and mingw is a fine compiler.