Implementing rain example with irrlicht

Messages : 1 Date d'inscription : 2012-01-06

Hi,

first of all thanks do the developers of Spark, it´s really useful Smile

To my current problem:

I´m trying to implement the rain example with irrlicht, but currenty I can´t see any effect of it, it´s totally invisible. Here is what I do:

Setting up the hole thing

Code::       //Inits Particle Engine
Vector3D gravity = Vector3D(0.0f,-2.0f,0.0f);

// Renderers

float sizeRatio = 1.2;

IRR::IRRPointRenderer* basicRenderer = IRR::IRRPointRenderer::create(Main->GetDevice());

// point renderer
IRR::IRRPointRenderer* dropRenderer = IRR::IRRPointRenderer::create(Main->GetDevice());
dropRenderer->setType(POINT_CIRCLE);
dropRenderer->setSize(2.0f * sizeRatio);
dropRenderer->setBlending(SPK::BLENDING_ADD);

// line renderer
IRR::IRRLineRenderer* rainRenderer = IRR::IRRLineRenderer::create(Main->GetDevice());
rainRenderer->setLength(-0.1f);
rainRenderer->setBlending(SPK::BLENDING_ADD);

// quad renderer
IRR::IRRQuadRenderer* splashRenderer = IRR::IRRQuadRenderer::create(Main->GetDevice());
splashRenderer->setScale(0.05f,0.05f);
splashRenderer->setTexturingMode(TEXTURE_2D);
splashRenderer->setTexture(GetDriver()->getTexture("./res/waterdrops.bmp"));
splashRenderer->setBlending(SPK::BLENDING_ADD);
splashRenderer->enableRenderingHint(DEPTH_WRITE,false);

// Models
// rain model
Model* rainModel = Model::create(FLAG_GREEN | FLAG_RED | FLAG_BLUE | FLAG_ALPHA | FLAG_MASS,
   0,
   FLAG_MASS);

rainModel->setParam(PARAM_ALPHA,0.2f);
rainModel->setImmortal(true);

// drop model
Model* dropModel = Model::create(FLAG_GREEN | FLAG_RED | FLAG_BLUE | FLAG_ALPHA | FLAG_MASS,
   0,
   FLAG_MASS);

dropModel->setParam(PARAM_ALPHA,0.6f);

// splash model
Model* splashModel = Model::create(FLAG_GREEN | FLAG_RED | FLAG_BLUE | FLAG_ALPHA | FLAG_SIZE | FLAG_ANGLE,
   FLAG_SIZE | FLAG_ALPHA,
   FLAG_SIZE | FLAG_ANGLE);

splashModel->setParam(PARAM_ANGLE,0.0f,2.0f * PI);
splashModel->setParam(PARAM_ALPHA,1.0f,0.0f);

// rain emitter
//AABox* rainZone = AABox::create(Vector3D(2048.0f,100.0f,2048.0f));
Ring* rainZone = Ring::create(Vector3D(0.0f,5.0f,0.0f));
SphericEmitter* rainEmitter = SphericEmitter::create(Vector3D(0.0f,-1.0f,0.0f),0.0f,0.03f * PI);
rainEmitter->setZone(rainZone);

// drop emitter
dropEmitter = SphericEmitter::create(Vector3D(0.0f,1.0f,0.0f),0.0f,0.2f * PI);

// Groups
// rain group
Group* rainGroup = Group::create(rainModel,8000);
//rainGroup->setCustomUpdate(&killRain); //not yet used
rainGroup->setRenderer(rainRenderer);
rainGroup->addEmitter(rainEmitter);
rainGroup->setFriction(0.7f);
rainGroup->setGravity(gravity);

// drop group
Group* dropGroup = Group::create(dropModel,16000);
dropGroup->setRenderer(dropRenderer);
dropGroup->setFriction(0.7f);
dropGroup->setGravity(gravity);

// splash group
Group* splashGroup = Group::create(splashModel,2400);
splashGroup->setRenderer(splashRenderer);

// System
particleSystem = SPK::IRR::IRRSystem::create(GetSmgr()->getRootSceneNode(), GetSmgr(), false);
particleSystem->addGroup(splashGroup);
particleSystem->addGroup(dropGroup);
particleSystem->addGroup(rainGroup);

SPKFactory::getInstance().traceAll();

And in the loop:

Code:: particleSystem->setTransformPosition(SPK::Vector3D(cam->getAbsolutePosition().X, cam->getAbsolutePosition().Y, cam->getAbsolutePosition().Z));
particleSystem->updateTransform();
particleSystem->update((float)GetDriver()->getFPS() * 0.01);

As you see it´s almost the same code used in the example, just changed for using irrlicht-renderers and systems.

Do you have any clue what I´m doing wrong?

Thanks,

badday

Developer Messages : 539 Date d'inscription : 2009-07-14 Age : 42

Sorry for the late reply.

I ll check that (to see if I can reproduce the issue) and get back to you.

Messages : 11 Date d'inscription : 2012-03-31

+1

I've also ported the Rain demo using Irrlicht as a renderer on my Android Phone.
Actually, I can see the effect, but the effect is not good(only some white line and splash effect can see)
I think the SPARK particle system is OK since i can see the rain effect.
Maybe the renderer part of Irrlicht-related has some problems.

PS, what i do is just 'COPY-PASTE' code from the related example.

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