Error when loading a model

[MrShadow97m]

Hi I am new to this forum. I come from Polish and play guitar. Hobby programming. That's all word of introduction. aa, and my English is not too good for which I apologize. Recently, I learned to program object. I created a class Engine:

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class engine
{
protected:
    //Grafic
    IrrlichtDevice* EngineDevice;
    IVideoDriver* EngineDriver;
    ISceneManager* EngineSMGR;
    IGUIEnvironment* EngineGUI;
    E_DRIVER_TYPE driverType;
    IGUISkin* skin;
    IGUIFont* font;
    ICameraSceneNode* Camera;
 
    //Sound
    irrklang::ISoundEngine* SoundEngine;
    //Gravity
 
public:
 
 
 
};
 

and using this class to created a prototype launcher and game.everything was fine but the code started to do complicated so I created a class of "ModelManager" to keep model and load in on memory.

ModelManager.cpp

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#ifndef MODELMANAGER_U_INCLUDE
#define MODELMANAGER_U_INCLUDE
#include "..\headers\cModelManager.h"
 
 
using namespace irr;
 
using namespace core;
using namespace scene;
using namespace video;
using namespace io;
using namespace gui;
 
 
int cModelManager::loadmodels()
{
 
   mLaserWeapon = EngineSMGR->getMesh("../media/models/lasergun/gun.md2");
 
}
#endif
 

ModelManager.h

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#ifndef CMODELMANAGER_U_INCLUDE
#define CMODELMANAGER_U_INCLUDE
 
 
#include "engine.h"
 
using namespace irr;
 
using namespace core;
using namespace scene;
using namespace video;
using namespace io;
using namespace gui;
 
class cModelManager : engine
{
protected:
 
 
public:
    IAnimatedMesh* mLaserWeapon;
    IAnimatedMeshSceneNode* nLaserWeapon;
 
 
    int loadmodels();
 
 
 
 
};
 
 
 
 
#endif
 

and game.cpp

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#ifndef GAME_U_INCLUDED
#define GAME_U_INCLUDED
 
#include <iostream>
#include <conio.h>
#include <irrlicht.h>
#include "..\headers\cGame.h"
#include "..\headers\cPlayer.h"
#include "..\headers\cModelManager.h"
#include "..\headers\cMapManager.h"
 
using namespace irr;
 
using namespace core;
using namespace scene;
using namespace video;
using namespace io;
using namespace gui;
 
 
 
 
 
int cGame::run()
{
    EngineDevice=createDevice(EDT_OPENGL,dimension2d<u32>(1024,768),16,false,false,false,0);
    EngineDriver = EngineDevice->getVideoDriver();
    EngineSMGR = EngineDevice->getSceneManager();
    EngineGUI = EngineDevice->getGUIEnvironment();
    ISceneNode* skybox=EngineSMGR->addSkyBoxSceneNode(
        EngineDriver->getTexture("../media/texture/skybox/irrlicht2_up.jpg"),
        EngineDriver->getTexture("../media/texture/skybox/irrlicht2_dn.jpg"),
        EngineDriver->getTexture("../media/texture/skybox/irrlicht2_lf.jpg"),
        EngineDriver->getTexture("../media/texture/skybox/irrlicht2_rt.jpg"),
        EngineDriver->getTexture("../media/texture/skybox/irrlicht2_ft.jpg"),
        EngineDriver->getTexture("../media/texture/skybox/irrlicht2_bk.jpg"));
cPlayer PLAYER;
cModelManager ModelMNG;
cMapManager MapMNG;
//ModelMNG.loadmodels();
PLAYER.pCamera = EngineSMGR->addCameraSceneNodeFPS();
//PLAYER.pCamera->addChild(ModelMNG.nLaserWeapon);
PLAYER.pCamera->setFarValue( 9000000 );
//MapMNG.loadmap();
loadmodel();
 
}
 
int cGame::Play()
{
 
 
 
 
 
 
 
 
 
 
EngineGUI->addImage(EngineDriver->getTexture("../media/texture/gui/celownik.png"),
            position2d<int>(512,384));
 
 
 
 
    while(EngineDevice->run())
    {
    EngineDriver->beginScene(true, true, SColor(255,100,101,140));
        //GameFps.fpsrecorder(y);
        EngineSMGR->drawAll();
        EngineGUI->drawAll();
 
 
 
        EngineDriver->endScene();
    }
 
}
 
 
#endif
 

When i add comment to code (stop function) everythink is alright but when i delete any coment of this three function //MapMNG.loadmap();
//ModelMNG.loadmodels();
//PLAYER.pCamera->addChild(ModelMNG.nLaserWeapon);

Error windows with button don't send report to microsoft windows. help pls.
//class cPlayer is like cModelManager but only with player model.

[sudi]

...you are not initializing the pointers in your ModelMNG. You might want to pick up a book/tutorial about c++ and how to programm with it.

[MrShadow97m]

... ok I understand. without the ability to start something but as soon as we learn in practice. I have read the section on pointers but I'm not sure how to do it. if someone could write me fixed code? please and thank.


My c++ skill is low but i still learning... my futer job i think is play guitar but i like programmin and i will still do this. I will add physic NEWTON to this project for this i optymalize code. Code of the game is more complex and it works but I try to break down the elemnty what causes errors. (due to my lack of knowledge)

[sudi]

like i said init the pointers with some objects. In your run method you init some pointers but you don't do it in your other classes. pointers don't magicly know what they are supposed to point to. i don't think you understood how inheritance works. in your case you are probably looking for static member vars in your engine class.

[MrShadow97m]

ok ok i read c++ book and i understand but i found another error not in the code but in my computer.(tittle in application is "??????????????" and application crash. I think i understand what pointers work but program still don't work (can't install directx/opengl and software crash i tried example hello word but still error and ???????????????) I must format computer but Could I can please to write this one pointer on the code above? because i still don't sure if i think good...

[jaworekplay]

+1 Sudi.
What you need to do is to initialise the nLaserWeapon with nLaserWeapon like this

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nLaserWeapon = smgr->addAnimatedMeshSceneNode(mLaserWeapon);

This is explained in the Hello World tutorial.
Good Luck.