a simple grid class

[SwitchCase]

Thanks. The following code compiles but crashes at runtime.

Code: Select all

#include <irrlicht.h>

using namespace irr;
using namespace core;
using namespace scene;
using namespace video;
using namespace io;
using namespace gui;


#include "grid.h"



int main(int argc, char** argv)
{

    IrrlichtDevice *device =
        createDevice(EDT_SOFTWARE, dimension2d<s32>(640, 480), 16,
            false, false, false, 0);

    IVideoDriver* driver = device->getVideoDriver();
    ISceneManager* smgr = device->getSceneManager();
    IGUIEnvironment* guienv = device->getGUIEnvironment();

    device->setWindowCaption(L"IrrTest");

    ICameraSceneNode* 	camera = smgr->addCameraSceneNodeFPS(0,100.0f,300.0f);

    Grid* grid;

    while(device->run())
    {
        driver->beginScene(true, true, SColor(0,0,0,0));
        smgr->drawAll();
        grid->draw(smgr);
        guienv->drawAll();
        driver->endScene();
    }


    device->drop();

    return 0;
}

It's the...

IrrTest.exe has encoutered a problem and needs to close. We are sorry for the incovenience.

error message that I get.


Thanks for any help.

[vitek]

If you use pointers you need to initialize them. I see two choices, but both involve initializing the grid properly before using it.

Code: Select all

// you can put a grid on the stack.
Grid option1;

// or you can allocate one from the heap. notice i'm initializing the pointer
// to point to an actual grid instance.
Grid* option2 = new Grid;

//
while (device->run())
{
    if (driver->beginScene(...))
    {
        // if you have a reference to an instance, you would draw it like this.
        option1.draw(smgr);

        // if you have a pointer to the instance, you would draw it like this.
        option2->draw(smgr);

        // other stuff
        
        driver->endScene();
    }
}

delete option2;

Personally, I think this grid should be a scene node like everything else in Irrlicht.

Travis

[SwitchCase]

oh bollocks... cheers vitek i didnt relise.
I feel stupid now

[humbrol]

Grid* grid;
Grid* whatever;

and..

Code: Select all

grid->draw();
whatever->draw();

Thank you very much, using irrlicht to round out my c++, its easier to learn when your trying to do something you like.

[SwitchCase]

The grid works great! I'm using as part of a irrlicht project template in code blocks.



Download test app: http://www.fileden.com/files/2007/11/21 ... rrTest.zip

Thanks for this mohaps.

[Dark_Kilauea]

Shamelessly pimping my own Scenenode here:

I finally managed to convert this class into a scene node, while adding a few optional features. You can get it at this thread: http://irrlicht.sourceforge.net/phpBB2/ ... hp?t=24938

Thanks mohaps for creating this base class!

[mohaps]

wow! returning after a long time to irrlicht forums... nice to see people using this...

[MasterGod]

wow! returning after a long time to irrlicht forums... nice to see people using this...

You're kidding? It's so damn good it should get into the lib (Dark_Kilauea's version of it as a scene node..) .

[Dark_Kilauea]

I did minor optimizations to your method, but my scenenode is very much the same internally. The next step in my mind is being able to either add LOD to the grid to save rendering time, or convert over to a dynamically textured quad for the grid itself. Unfortunately, I do not have the time to implement either of these approaches.