How to use slight.h

mesklinite · Post by **mesklinite** » Mon Mar 06, 2006 7:55 pm

I've looked for tutorials and I have yet to find one that explains how to create a directional or omin light through the use of slight.h I wuld greatly appreciate any link or help on this subject. Thanks.

mesklinite · Post by **mesklinite** » Tue Mar 07, 2006 9:15 pm

Here is what I've tried so far

scene::IAnimatedMesh* mesh = smgr->getMesh("20kdm2.bsp");
scene::ISceneNode* node = 0;
scene::ILightSceneNode* light = smgr->addLightSceneNode();
light->setMaterialType(video::E_LIGHT_TYPE::ELT_DIRECTIONAL);

I get an error trying this.
error C2039: 'ELT_DIRECTIONAL' : is not a member of 'irr::video::E_LIGHT_TYPE'

vitek · Post by **vitek** » Tue Mar 07, 2006 11:00 pm

The error is because you are passing a video::E_LIGHT_TYPE where the compiler expects a video::E_MATERIAL_TYPE. You don't want to change the light material, you want to change the light data...

Code: Select all

  scene::ILightSceneNode* light = smgr->addLightSceneNode();
  light->getLightData().Type = video::ELT_DIRECTIONAL;

mesklinite · Post by **mesklinite** » Thu Mar 09, 2006 8:28 pm

That does make sense. Do you have to turn the light on in any way?

I haven't been able to get the light to appear as of yet. Thanks again for any help!

Code: Select all

scene::IAnimatedMesh* mesh = smgr->getMesh("first_level.bsp");
	scene::ISceneNodeAnimator* anim = 0;
	
	core::vector3df coord(-1300, -144, -1249);

	scene::ISceneNode* node = 0;
	scene::ILightSceneNode* light = smgr->addLightSceneNode();
	light->getLightData().Type = video::ELT_DIRECTIONAL;
	light->setPosition(lightOne);
	//light->isVisible();
	//light->setPosition(coord);

	light = device->getSceneManager()->addLightSceneNode(0, core::vector3df(-736,464,-1818), video::SColorf(1.0f, 0.5f, 0.5f, 1.0f), 1500);
	anim = device->getSceneManager()->createFlyCircleAnimator(core::vector3df(-736,464,-1818), 80.0f, 0.0005f);
	light->addAnimator(anim);

vitek · Post by **vitek** » Fri Mar 10, 2006 4:31 am

I haven't used directional lights at all. It looks like you are already doing this, but if you aren't you might try tweaking the SpecialFX example just to test the functionality that you want is there.

If you just leave the light type as-is, you will have an omnidirectional light. If you set the light type to directional, it will be a directional light, which means it has no position. Directional is not the same as a flashlight type light.

Travis

mesklinite · Post by **mesklinite** » Sat Mar 11, 2006 6:20 pm

Hmmm that's a good idea, i'll give that a try.