Referencing smgr from another class

Guest · Post by **Guest** » Sun Jun 20, 2004 9:34 pm

In a class called CIrrlichtManager I have this code sniplet:

ISceneManager* smgr = device->getSceneManager();

Then, in another class called CModelManager I want to use that smgr. So I have this:

scene::IAnimatedMesh* weaponMesh = CIrrlichtManager::smgr->getMesh("models/meshFile.obj");

But, that gives me this error:

CModelManager.cpp(13) : error C2227: left of '->getMesh' must point to class/struct/union
type is ''

Obviously it thinks smgr is not a defined? How can I fix this? Thanks.

Electron · Post by **Electron** » Sun Jun 20, 2004 9:48 pm

Well, is CIrrlichtManager::smgr static? If it is, did you allocate memory for it
(as gloabal variable

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ISceneManager* CIrrlichtManager::smgr =0;

)?

Tyn · Post by **Tyn** » Sun Jun 20, 2004 10:03 pm

If it is in seperate classes then even doing that won't work. You will need a base class that all the other classes where it is used derive from.

Guest · Post by **Guest** » Sun Jun 20, 2004 10:18 pm

Ah..so say CIrrlicht was my base class, I would do:

class CBlahManager : CIrrlicht

?

Tyn · Post by **Tyn** » Sun Jun 20, 2004 11:01 pm

You got it. Make the pointers to stuff like the scene manager virtual so that the child classes can use them and you are away

Guest · Post by **Guest** » Mon Jun 21, 2004 2:39 am

Eh..what do you mean make them virtual? (sorry)

Guest · Post by **Guest** » Mon Jun 21, 2004 2:45 am

Also, currently I have this code in a function in CIrrlicht called initIrrlicht.

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IrrlichtDevice* device =		createDevice(EDT_OPENGL, dimension2d<s32>(800,600), 16, false, false, 0);

//Define video driver, GUI environment and scene manager
IVideoDriver* driver = device->getVideoDriver();
ISceneManager* smgr = device->getSceneManager();
IGUIEnvironment* guienv = device->getGUIEnvironment();

//Create our FPS camera
ICameraSceneNode* camera = smgr->addCameraSceneNodeFPS(0, 30, 50, -1);

If I want that to be the Irrlicht base class so I can use CBlah : CIrrlicht for child classes, should I move that code into the constructor? or..?

Thanks.

Guest · Post by **Guest** » Mon Jun 21, 2004 6:09 am

Nevermind, I figured it out

Thanks for all the help guys.

Electron · Post by **Electron** » Mon Jun 21, 2004 12:10 pm

Am I missing something? What I showed works fine for me. I have a class called CGame and in it a public member declared like this

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static ISceneManager *smgr;

At the beginning of game.cpp I allocate memory for the static variable like

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ISceneManager *CGame::smgr=0;

In the constructor of my class CPlayer (which does not inherit from CGame) I have

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mesh=CGame::smgr->getMesh("player.x");

All works fine for me.