engine lights in BSP

MG · Post by MG » Sat Nov 01, 2003 1:50 pm

Is possible using engine lights in BSP scene (seeing lights on texture in bsp scene)?

[dx/x]=HUNT3R · Post by **[dx/x]=HUNT3R** » Sat Nov 01, 2003 5:11 pm

Well yeah, all you do is add a light scene node:

scene::ILightSceneNode* light = device->getSceneManager()->addLightSceneNode(parent, 
core::vector3df(X,Y,Z), video::SColor(255, 255, 255, 255), radius);

where X,Y,Z are the corrdinates you want it at and radius is the radius of light, i.e. 1500.0f. Of course you won't be able to see the light itself, just the light that is shone on your world. So attach a billboard Scene Node that looks like a light to the Light Scene Node. BTW the lights aren't working correctly in OpenGL right now, only DirectX.

MG · Post by MG » Sat Nov 01, 2003 6:14 pm

But when i add light to bsp scene, light not lighting

Where i doing wrong?

Code: Select all

scene::ISceneNode* node_light = smgr->addLightSceneNode(0,
	core::vector3df(0,60,0),
	video::SColorf(1.0f, 1.0f, 1.0f, 1.0f), 1500.0f);

node_light = smgr->addBillboardSceneNode(node_light, core::dimension2d<f32>(50, 50));
node_light->setMaterialFlag(video::EMF_LIGHTING, false);
node_light->setMaterialType(video::EMT_TRANSPARENT_ADD_COLOR);
node_light->setMaterialTexture(0,	driver->getTexture("particlewhite.bmp"));

[dx/x]=HUNT3R · Post by **[dx/x]=HUNT3R** » Sat Nov 01, 2003 6:50 pm

I'm assuming you're using DirectX b/c I think in OpenGL it would all be lit up. But it looks like you have some light on the ceiling, just not on the floor or sides? Your code looks correct, maybe try SColor(255,255,255,255) instead of SColorf(1.0,1.0,1.0,1.0) and see if there's any change. Also, try and change the coordinates of the light, move it around and see if there's any change...

MG · Post by MG » Sat Nov 01, 2003 8:07 pm

In scene is only one light (with billboard), other 'lights' are in .bsp (textures). Can you see on this?
http://www.auto-myslivec.cz/img/irrlicht/lights.zip 500KB

Thank you

[dx/x]=HUNT3R · Post by **[dx/x]=HUNT3R** » Sat Nov 01, 2003 8:21 pm

There has got to be something wrong with your map. I moved the light all over the place and nothing changed. So I turned up the ambient light all the way which should have lit up the whole room and still no change in light. I dont know what to tell you except try a different map, maybe someone else will read this and have an idea...

[dx/x]=HUNT3R · Post by **[dx/x]=HUNT3R** » Sat Nov 01, 2003 8:32 pm

I did notice some things you are doing wrong. Your code for the light should look like this:

Code: Select all

scene::ILightSceneNode* node_light = device->getSceneManager()->addLightSceneNode(0,
		core::vector3df(0,80,0),
		video::SColor(255,255,255,255), 5500.0f);
	
	scene::IBillboardSceneNode* light = smgr->addBillboardSceneNode(node_light, core::dimension2d<f32>(50, 50));
	light->setMaterialFlag(video::EMF_LIGHTING, false);
	light->setMaterialType(video::EMT_TRANSPARENT_ADD_COLOR);
	light->setMaterialTexture(0, driver->getTexture("particlewhite.bmp"));

You were using the same ISceneNode for the light and the billboard. Make them separate nodes and the light should be an ILightSceneNode* and the billboard should be a IBillboardSceneNode* but strangely enough this still does not fix your problem... it must be a problem with the map.

Gonosz · Post by **Gonosz** » Sat Nov 01, 2003 9:15 pm

If you want to use dynamic lights in a lightmapped BSP, check out this topic: http://irrlicht.sourceforge.net/phpBB2/ ... c.php?t=85! In short: it isn't possible (yet) to use lightmaps and dynamic (created) lights as well...