own classes with irrlicht objects in it

[muxxxa]

hi,
first: please excuse my bad english.
I recently started with Irrlicht and I wanted to do a fps. I started and when I was ready with the collision, I noticed that my project wasn't really too good structured. So I started the project new and wanted to make some classes to have 'good c++ style'. But now I've got another problem: I can compile it under Dev-Cpp and then execute it. But there's only a black screen and there comes an error message that says something wants to read '0xffffffff'. When I use Dev-Cpp's debugging mode the screen turns white and it only says that there was a segmention fault. I don't know what to do. Perhaps you could help me. Thx.
Here's the code:

main.cpp

Code: Select all

#include <irrlicht.h>

#include "graphics.h"

using namespace irr;

int main(){
    system sys;
    
    map simple_room(sys);
    simple_room.lighting(false);
    
    sys.fpscamera();
    sys.cursorVisible(false);
    
    while(sys.active()){
                        sys.begin();
                        sys.draw();
                        sys.end();
    }
}

graphics.h

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#ifndef _GRAPHICS_H_
#define _GRAPHICS_H_

#include <irrlicht.h>

using namespace irr;

class map;
class system;

class system{
      protected:
                IrrlichtDevice *device;
                video::IVideoDriver *driver;
                scene::ISceneManager *manager;
      public:
             system(){
                 device = createDevice(video::EDT_OPENGL,core::dimension2d<s32>(1600,1200),16,true,false,false);
                 driver = device->getVideoDriver();
                 manager = device->getSceneManager();
             }
             
             ~system(){
                       device->drop();
             }
             
             scene::IAnimatedMesh* mesh(const c8* name){
                                   return manager->getMesh(name);
             }                      
             
             scene::ISceneNode* bigNode(scene::IAnimatedMesh* m){
                                return manager->addOctTreeSceneNode(m->getMesh(0));
             }
             
             void fpscamera(){
                  manager->addCameraSceneNodeFPS();
                  return;
             }
             
             void cursorVisible(bool visible){
                  device->getCursorControl()->setVisible(visible);
                  return;
             }
             
             bool active(){
                  return device->run();
             }
             
             void begin(){
                  driver->beginScene(true,true,video::SColor(0,200,200,200));
                  return;
             }
             
             void end(){
                  driver->endScene();
                  return;
             }
             
             void draw(){
                  manager->drawAll();
                  return;
             }
};

class map{
      friend scene::ISceneNode* bigNode(scene::IAnimatedMesh*);
      protected:
                scene::IAnimatedMesh* mesh;
                scene::ISceneNode* node;
      public:
             map(system s){
                        mesh = s.mesh("maps/simple_room.x");
                        node = 0;
                        node = s.bigNode(mesh);
             }
             
             void lighting(bool activated){
                  node->setMaterialFlag(video::EMF_LIGHTING,activated);
                  return;
             }     
             
             scene::IAnimatedMesh* returnMesh(){
                                   return mesh;
             }
             
};
#endif

[disanti]

I couldn't catch anything that would be crashing, but I didn't take the time to set it up in VC to test it. I recommend you inline your functions so that it runs faster though.
________
Eddie irvine

[NexusInteractive]

I dont have an answer to your question, but that is a good idea. I never thought of making your own classes.

Perhaps I will try this soon. It gets hard for me to read C++ once everything gets going.

[Acki]

Well, I create my own classes by subclassing the wanted Irrlicht classes !!!
So you have the original Irrlicht objects (classes) and you can add own vars and functions to it...

[muxxxa]

So does this mean my version doesn't work? if not why?

[eXodus]

Code: Select all

class map{
      public:
             map(system s){
                    ...
             }
};

Try passing a reference of your 'system' object.

[muxxxa]

thank you so much, eXodus, now it works.
I changed the part in graphics.cpp to

Code: Select all

             ...
map(system *s){
                        mesh = s->mesh("maps/simple_room.x");
                        node = 0;
                        node = s->bigNode(mesh);
             }
...

and in main.cpp to

Code: Select all

...
    map simple_room(&sys);
...

thx

[eXodus]

You're welcome! It's been a while since I helped someone on the forum