Billboards facing the wrong way

[programmeur]

Hi,

I've got a really newbie question. It's the first time I use billboards with Irrlicht. It seems I'm not able to make the billboard face the camera the right way. Here is the texture I use for my billboard:



And here is what I get in the app:



The code I use is:

Code: Select all

p_pBillbExit = smgr->addBillboardSceneNode();
p_pBillbExit->setMaterialType(video::EMT_TRANSPARENT_ADD_COLOR);
p_pBillbExit->setMaterialTexture(0, driver->getTexture("data/menu/exit.bmp"));
p_pBillbExit->setMaterialFlag(video::EMF_LIGHTING, false);
p_pBillbExit->setSize(dimension2d<f32>(180, 40));

Billboards are supposed to always face the camera, aren't they ? Does anybody see the problem ? Or should I just play games instead of trying to develop one ?

Thanks !

Edit> My camera is placed that way:

Code: Select all

p_pCam = smgr->addCameraSceneNode(0, vector3df(0, 0, 200), vector3df(0, 0, 0));

[Dataleap]

Try negative value for the size.

[programmeur]

Thanks for reply.

It worked ! I don't know why I have to use negative values... anyway, it's better than my 180°-Photoshop-sprite-rotating solution

Thanks again.