SPK::SPK_ID createExplosion( const SparkDrawable::TextureIDMap& textureIDMap, int screenWidth, int screenHeight )
{
SparkDrawable::TextureIDMap::const_iterator itr;
GET_TEXTURE_ID( "explosion", textureExplosion );
GET_TEXTURE_ID( "flash", textureFlash );
GET_TEXTURE_ID( "spark1", textureSpark1 );
GET_TEXTURE_ID( "spark2", textureSpark2 );
GET_TEXTURE_ID( "wave", textureWave );
//
// Renderers
//
// smoke renderer
SPK::GL::GLQuadRenderer* smokeRenderer = SPK::GL::GLQuadRenderer::create();
smokeRenderer->setTexturingMode(SPK::TEXTURE_2D);
smokeRenderer->setTexture(textureExplosion);
smokeRenderer->setTextureBlending(GL_MODULATE);
smokeRenderer->setAtlasDimensions(2,2); // uses 4 different patterns in the texture
smokeRenderer->setBlending(SPK::BLENDING_ALPHA);
smokeRenderer->enableRenderingHint(SPK::DEPTH_WRITE,false);
smokeRenderer->setShared(true);
// flame renderer
SPK::GL::GLQuadRenderer* flameRenderer = SPK::GL::GLQuadRenderer::create();
flameRenderer->setTexturingMode(SPK::TEXTURE_2D);
flameRenderer->setTexture(textureExplosion);
flameRenderer->setTextureBlending(GL_MODULATE);
flameRenderer->setAtlasDimensions(2,2);
flameRenderer->setBlending(SPK::BLENDING_ADD);
flameRenderer->enableRenderingHint(SPK::DEPTH_WRITE,false);
flameRenderer->setShared(true);
// flash renderer
SPK::GL::GLQuadRenderer* flashRenderer = SPK::GL::GLQuadRenderer::create();
flashRenderer->setTexturingMode(SPK::TEXTURE_2D);
flashRenderer->setTexture(textureFlash);
flashRenderer->setTextureBlending(GL_REPLACE);
flashRenderer->setBlending(SPK::BLENDING_ADD);
flashRenderer->enableRenderingHint(SPK::DEPTH_WRITE,false);
flashRenderer->setShared(true);
// spark 1 renderer
SPK::GL::GLQuadRenderer* spark1Renderer = SPK::GL::GLQuadRenderer::create();
spark1Renderer->setTexturingMode(SPK::TEXTURE_2D);
spark1Renderer->setTexture(textureSpark1);
spark1Renderer->setTextureBlending(GL_REPLACE);
spark1Renderer->setBlending(SPK::BLENDING_ADD);
spark1Renderer->enableRenderingHint(SPK::DEPTH_WRITE,false);
spark1Renderer->setOrientation(SPK::DIRECTION_ALIGNED); // sparks are oriented function o their velocity
spark1Renderer->setScale(0.05f,1.0f); // thin rectangles
spark1Renderer->setShared(true);
// spark 2 renderer
SPK::GL::GLRenderer* spark2Renderer = NULL;
if ( SPK::GL::GLPointRenderer::loadGLExtPointSprite() &&
SPK::GL::GLPointRenderer::loadGLExtPointParameter()) // uses point sprite if possible
{
SPK::GL::GLPointRenderer::setPixelPerUnit(45.0f * osg::PI / 180.0f, screenHeight);
SPK::GL::GLPointRenderer* pointRenderer = SPK::GL::GLPointRenderer::create();
pointRenderer->setType(SPK::POINT_SPRITE);
pointRenderer->setTexture(textureSpark2);
pointRenderer->setTextureBlending(GL_MODULATE);
pointRenderer->enableWorldSize(true);
pointRenderer->setSize(0.02f);
spark2Renderer = pointRenderer;
}
else
{
SPK::GL::GLQuadRenderer* quadRenderer = SPK::GL::GLQuadRenderer::create();
quadRenderer->setTexturingMode(SPK::TEXTURE_2D);
quadRenderer->setTexture(textureSpark2);
quadRenderer->setTextureBlending(GL_MODULATE);
quadRenderer->setScale(0.02f,0.02f);
spark2Renderer = quadRenderer;
}
spark2Renderer->setBlending(SPK::BLENDING_ADD);
spark2Renderer->enableRenderingHint(SPK::DEPTH_WRITE,false);
spark2Renderer->setShared(true);
// wave renderer
SPK::GL::GLQuadRenderer* waveRenderer = SPK::GL::GLQuadRenderer::create();
waveRenderer->setTexturingMode(SPK::TEXTURE_2D);
waveRenderer->setTexture(textureWave);
waveRenderer->setTextureBlending(GL_MODULATE);
waveRenderer->setBlending(SPK::BLENDING_ALPHA);
waveRenderer->enableRenderingHint(SPK::DEPTH_WRITE,false);
waveRenderer->enableRenderingHint(SPK::ALPHA_TEST,true); // uses the alpha test
waveRenderer->setAlphaTestThreshold(0.0f);
waveRenderer->setOrientation(SPK::FIXED_ORIENTATION); // the orientatin is fixed
waveRenderer->lookVector.set(0.0f,1.0f,0.0f);
waveRenderer->upVector.set(1.0f,0.0f,0.0f); // we dont really care about the up axis
waveRenderer->setShared(true);
//
// Models
//
SPK::Interpolator* interpolator = NULL; // pointer to an interpolator that is used to retrieve interpolators
// smoke model
SPK::Model* smokeModel = SPK::Model::create(
SPK::FLAG_RED | SPK::FLAG_GREEN | SPK::FLAG_BLUE | SPK::FLAG_ALPHA |
SPK::FLAG_SIZE | SPK::FLAG_ANGLE | SPK::FLAG_TEXTURE_INDEX,
SPK::FLAG_SIZE | SPK::FLAG_ANGLE,
SPK::FLAG_SIZE | SPK::FLAG_ANGLE | SPK::FLAG_TEXTURE_INDEX,
SPK::FLAG_ALPHA);
smokeModel->setParam(SPK::PARAM_RED,0.2f);
smokeModel->setParam(SPK::PARAM_GREEN,0.2f);
smokeModel->setParam(SPK::PARAM_BLUE,0.2f);
smokeModel->setParam(SPK::PARAM_SIZE,0.6f,0.8f,1.0f,1.4f);
smokeModel->setParam(SPK::PARAM_TEXTURE_INDEX,0.0f,4.0f);
smokeModel->setParam(SPK::PARAM_ANGLE,0.0f,osg::PI * 0.5f,0.0f,osg::PI * 0.5f);
smokeModel->setLifeTime(2.5f,3.0f);
smokeModel->setShared(true);
interpolator = smokeModel->getInterpolator(SPK::PARAM_ALPHA);
interpolator->addEntry(0.0f,0.0f);
interpolator->addEntry(0.4f,0.4f,0.6f);
interpolator->addEntry(0.6f,0.4f,0.6f);
interpolator->addEntry(1.0f,0.0f);
// flame model
SPK::Model* flameModel = SPK::Model::create(
SPK::FLAG_RED | SPK::FLAG_GREEN | SPK::FLAG_BLUE | SPK::FLAG_ALPHA |
SPK::FLAG_SIZE | SPK::FLAG_ANGLE | SPK::FLAG_TEXTURE_INDEX,
SPK::FLAG_ANGLE | SPK::FLAG_RED | SPK::FLAG_GREEN | SPK::FLAG_BLUE,
SPK::FLAG_ANGLE | SPK::FLAG_TEXTURE_INDEX,
SPK::FLAG_SIZE | SPK::FLAG_ALPHA);
flameModel->setParam(SPK::PARAM_RED,1.0f,0.2f);
flameModel->setParam(SPK::PARAM_GREEN,0.5f,0.2f);
flameModel->setParam(SPK::PARAM_BLUE,0.2f,0.2f);
flameModel->setParam(SPK::PARAM_TEXTURE_INDEX,0.0f,4.0f);
flameModel->setParam(SPK::PARAM_ANGLE,0.0f,osg::PI * 0.5f,0.0f,osg::PI * 0.5f);
flameModel->setLifeTime(1.5f,2.0f);
flameModel->setShared(true);
interpolator = flameModel->getInterpolator(SPK::PARAM_SIZE);
interpolator->addEntry(0.0f,0.25f);
interpolator->addEntry(0.02f,0.6f,0.8f);
interpolator->addEntry(1.0f,1.0f,1.4f);
interpolator = flameModel->getInterpolator(SPK::PARAM_ALPHA);
interpolator->addEntry(0.5f,1.0f);
interpolator->addEntry(1.0f,0.0f);
// flash model
SPK::Model* flashModel = SPK::Model::create(
SPK::FLAG_ALPHA | SPK::FLAG_SIZE | SPK::FLAG_ANGLE,
SPK::FLAG_NONE,
SPK::FLAG_ANGLE,
SPK::FLAG_ALPHA | SPK::FLAG_SIZE);
flashModel->setParam(SPK::PARAM_ANGLE,0.0f,2.0f * osg::PI);
flashModel->setLifeTime(0.5f,0.5f);
flashModel->setShared(true);
interpolator = flashModel->getInterpolator(SPK::PARAM_SIZE);
interpolator->addEntry(0.0f,0.25f);
interpolator->addEntry(0.1f,1.0f,2.0f);
interpolator = flashModel->getInterpolator(SPK::PARAM_ALPHA);
interpolator->addEntry(0.0f,1.0f);
interpolator->addEntry(0.4f,0.0f);
// spark 1 model
SPK::Model* spark1Model = SPK::Model::create(
SPK::FLAG_SIZE | SPK::FLAG_ALPHA,
SPK::FLAG_ALPHA,
SPK::FLAG_SIZE);
spark1Model->setParam(SPK::PARAM_ALPHA,1.0f,0.0f);
spark1Model->setParam(SPK::PARAM_SIZE,0.2f,0.4f);
spark1Model->setLifeTime(0.2f,1.0f);
spark1Model->setShared(true);
// spark 2 model
SPK::Model* spark2Model = SPK::Model::create(
SPK::FLAG_RED | SPK::FLAG_GREEN | SPK::FLAG_BLUE | SPK::FLAG_ALPHA,
SPK::FLAG_GREEN | SPK::FLAG_BLUE | SPK::FLAG_ALPHA,
SPK::FLAG_GREEN);
spark2Model->setParam(SPK::PARAM_ALPHA,1.0f,0.0f);
spark2Model->setParam(SPK::PARAM_RED,1.0f);
spark2Model->setParam(SPK::PARAM_GREEN,1.0f,1.0f,0.3f,1.0f);
spark2Model->setParam(SPK::PARAM_BLUE,0.7f,0.3f);
spark2Model->setLifeTime(1.0f,3.0f);
spark2Model->setShared(true);
// wave model
SPK::Model* waveModel = SPK::Model::create(
SPK::FLAG_ALPHA | SPK::FLAG_SIZE,
SPK::FLAG_SIZE | SPK::FLAG_ALPHA);
waveModel->setParam(SPK::PARAM_SIZE,0.0f,4.0f);
waveModel->setParam(SPK::PARAM_ALPHA,0.2f,0.0f);
waveModel->setLifeTime(0.8f,0.8f);
waveModel->setShared(true);
//
// Emitters
//
SPK::Sphere* explosionSphere = SPK::Sphere::create(SPK::Vector3D(0.0f,0.0f,0.0f),0.4f);
// smoke emitter
SPK::RandomEmitter* smokeEmitter = SPK::RandomEmitter::create();
smokeEmitter->setZone(SPK::Sphere::create(SPK::Vector3D(0.0f,0.0f,0.0f),0.6f),false);
smokeEmitter->setFlow(-1);
smokeEmitter->setTank(15);
smokeEmitter->setForce(0.02f,0.04f);
// flame emitter
SPK::NormalEmitter* flameEmitter = SPK::NormalEmitter::create();
flameEmitter->setZone(explosionSphere);
flameEmitter->setFlow(-1);
flameEmitter->setTank(15);
flameEmitter->setForce(0.06f,0.1f);
// flash emitter
SPK::StaticEmitter* flashEmitter = SPK::StaticEmitter::create();
flashEmitter->setZone(SPK::Sphere::create(SPK::Vector3D(0.0f,0.0f,0.0f),0.1f));
flashEmitter->setFlow(-1);
flashEmitter->setTank(3);
// spark 1 emitter
SPK::NormalEmitter* spark1Emitter = SPK::NormalEmitter::create();
spark1Emitter->setZone(explosionSphere);
spark1Emitter->setFlow(-1);
spark1Emitter->setTank(20);
spark1Emitter->setForce(2.0f,3.0f);
// spark 2 emitter
SPK::NormalEmitter* spark2Emitter = SPK::NormalEmitter::create();
spark2Emitter->setZone(explosionSphere);
spark2Emitter->setFlow(-1);
spark2Emitter->setTank(400);
spark2Emitter->setForce(0.4f,0.8f);
// wave emitter
SPK::StaticEmitter* waveEmitter = SPK::StaticEmitter::create();
waveEmitter->setZone(SPK::Point::create());
waveEmitter->setFlow(-1);
waveEmitter->setTank(1);
//
// Groups
//
// smoke group
SPK::Group* smokeGroup = SPK::Group::create(smokeModel,15);
smokeGroup->addEmitter(smokeEmitter);
smokeGroup->setRenderer(smokeRenderer);
smokeGroup->setGravity(SPK::Vector3D(0.0f,0.0f,0.05f));
// flame group
SPK::Group* flameGroup = SPK::Group::create(flameModel,15);
flameGroup->addEmitter(flameEmitter);
flameGroup->setRenderer(flameRenderer);
// flash group
SPK::Group* flashGroup = SPK::Group::create(flashModel,3);
flashGroup->addEmitter(flashEmitter);
flashGroup->setRenderer(flashRenderer);
// spark 1 group
SPK::Group* spark1Group = SPK::Group::create(spark1Model,20);
spark1Group->addEmitter(spark1Emitter);
spark1Group->setRenderer(spark1Renderer);
spark1Group->setGravity(SPK::Vector3D(0.0f,0.0f,-1.5f));
// spark 2 group
SPK::Group* spark2Group = SPK::Group::create(spark2Model,400);
spark2Group->addEmitter(spark2Emitter);
spark2Group->setRenderer(spark2Renderer);
spark2Group->setGravity(SPK::Vector3D(0.0f,0.0f,-0.3f));
spark2Group->setFriction(0.4f);
// wave group
SPK::Group* waveGroup = SPK::Group::create(waveModel,1);
waveGroup->addEmitter(waveEmitter);
waveGroup->setRenderer(waveRenderer);
//
// System
//
SPK::System* system = SPK::System::create();
system->addGroup(waveGroup);
system->addGroup(smokeGroup);
system->addGroup(flameGroup);
system->addGroup(flashGroup);
system->addGroup(spark1Group);
system->addGroup(spark2Group);
return system->getSPKID();
}
SPK::SPK_ID createFire( const SparkDrawable::TextureIDMap& textureIDMap, int screenWidth, int screenHeight )
{
SparkDrawable::TextureIDMap::const_iterator itr;
GET_TEXTURE_ID( "fire", textureFire );
GET_TEXTURE_ID( "explosion", textureSmoke );
// Renderers
SPK::GL::GLQuadRenderer* fireRenderer = SPK::GL::GLQuadRenderer::create();
fireRenderer->setScale(0.3f,0.3f);
fireRenderer->setTexturingMode(SPK::TEXTURE_2D);
fireRenderer->setTexture(textureFire);
fireRenderer->setTextureBlending(GL_MODULATE);
fireRenderer->setBlending(SPK::BLENDING_ADD);
fireRenderer->enableRenderingHint(SPK::DEPTH_WRITE,false);
fireRenderer->setAtlasDimensions(2,2);
SPK::GL::GLQuadRenderer* smokeRenderer = SPK::GL::GLQuadRenderer::create();
smokeRenderer->setScale(0.3f,0.3f);
smokeRenderer->setTexturingMode(SPK::TEXTURE_2D);
smokeRenderer->setTexture(textureSmoke);
smokeRenderer->setTextureBlending(GL_MODULATE);
smokeRenderer->setBlending(SPK::BLENDING_ALPHA);
smokeRenderer->enableRenderingHint(SPK::DEPTH_WRITE,false);
smokeRenderer->setAtlasDimensions(2,2);
// Models
SPK::Model* fireModel = SPK::Model::create(
SPK::FLAG_RED | SPK::FLAG_GREEN | SPK::FLAG_BLUE | SPK::FLAG_ALPHA |
SPK::FLAG_SIZE | SPK::FLAG_ANGLE | SPK::FLAG_TEXTURE_INDEX,
SPK::FLAG_RED | SPK::FLAG_GREEN | SPK::FLAG_ALPHA | SPK::FLAG_ANGLE,
SPK::FLAG_RED | SPK::FLAG_GREEN | SPK::FLAG_TEXTURE_INDEX | SPK::FLAG_ANGLE,
SPK::FLAG_SIZE);
fireModel->setParam(SPK::PARAM_RED,0.8f,0.9f,0.8f,0.9f);
fireModel->setParam(SPK::PARAM_GREEN,0.5f,0.6f,0.5f,0.6f);
fireModel->setParam(SPK::PARAM_BLUE,0.3f);
fireModel->setParam(SPK::PARAM_ALPHA,0.4f,0.0f);
fireModel->setParam(SPK::PARAM_ANGLE,0.0f,2.0f * osg::PI,0.0f,2.0f * osg::PI);
fireModel->setParam(SPK::PARAM_TEXTURE_INDEX,0.0f,4.0f);
fireModel->setLifeTime(1.0f,1.5f);
SPK::Interpolator* interpolator = fireModel->getInterpolator(SPK::PARAM_SIZE);
interpolator->addEntry(0.5f,2.0f,5.0f);
interpolator->addEntry(1.0f,0.0f);
SPK::Model* smokeModel = SPK::Model::create(
SPK::FLAG_RED | SPK::FLAG_GREEN | SPK::FLAG_BLUE | SPK::FLAG_ALPHA |
SPK::FLAG_SIZE | SPK::FLAG_ANGLE | SPK::FLAG_TEXTURE_INDEX,
SPK::FLAG_RED | SPK::FLAG_GREEN | SPK::FLAG_SIZE | SPK::FLAG_ANGLE,
SPK::FLAG_TEXTURE_INDEX | SPK::FLAG_ANGLE,
SPK::FLAG_ALPHA);
smokeModel->setParam(SPK::PARAM_RED,0.3f,0.2f);
smokeModel->setParam(SPK::PARAM_GREEN,0.25f,0.2f);
smokeModel->setParam(SPK::PARAM_BLUE,0.2f);
smokeModel->setParam(SPK::PARAM_ALPHA,0.2f,0.0f);
smokeModel->setParam(SPK::PARAM_SIZE,5.0,10.0f);
smokeModel->setParam(SPK::PARAM_TEXTURE_INDEX,0.0f,4.0f);
smokeModel->setParam(SPK::PARAM_ANGLE,0.0f,2.0f * osg::PI,0.0f,2.0f * osg::PI);
smokeModel->setLifeTime(5.0f,5.0f);
interpolator = smokeModel->getInterpolator(SPK::PARAM_ALPHA);
interpolator->addEntry(0.0f,0.0f);
interpolator->addEntry(0.2f,0.2f);
interpolator->addEntry(1.0f,0.0f);
// Emitters
// The emitters are arranged so that the fire looks realistic
SPK::StraightEmitter* fireEmitter1 = SPK::StraightEmitter::create(SPK::Vector3D(0.0f,0.0f,1.0f));
fireEmitter1->setZone(SPK::Sphere::create(SPK::Vector3D(0.0f,0.0f,-1.0f),0.5f));
fireEmitter1->setFlow(40);
fireEmitter1->setForce(1.0f,2.5f);
SPK::StraightEmitter* fireEmitter2 = SPK::StraightEmitter::create(SPK::Vector3D(1.0f,0.0f,0.6f));
fireEmitter2->setZone(SPK::Sphere::create(SPK::Vector3D(0.15f,0.075f,-1.2f),0.1f));
fireEmitter2->setFlow(15);
fireEmitter2->setForce(0.5f,1.5f);
SPK::StraightEmitter* fireEmitter3 = SPK::StraightEmitter::create(SPK::Vector3D(-0.6f,-0.8f,0.8f));
fireEmitter3->setZone(SPK::Sphere::create(SPK::Vector3D(-0.375f,-0.375f,-1.15f),0.3f));
fireEmitter3->setFlow(15);
fireEmitter3->setForce(0.5f,1.5f);
SPK::StraightEmitter* fireEmitter4 = SPK::StraightEmitter::create(SPK::Vector3D(-0.8f,0.2f,0.5f));
fireEmitter4->setZone(SPK::Sphere::create(SPK::Vector3D(-0.255f,0.225f,-1.2f),0.2f));
fireEmitter4->setFlow(10);
fireEmitter4->setForce(0.5f,1.5f);
SPK::StraightEmitter* fireEmitter5 = SPK::StraightEmitter::create(SPK::Vector3D(0.1f,-1.0f,0.8f));
fireEmitter5->setZone(SPK::Sphere::create(SPK::Vector3D(-0.075f,-0.3f,-1.2f),0.2f));
fireEmitter5->setFlow(10);
fireEmitter5->setForce(0.5f,1.5f);
SPK::SphericEmitter* smokeEmitter = SPK::SphericEmitter::create(SPK::Vector3D(0.0f,0.0f,1.0f),0.0f,0.5f * osg::PI);
smokeEmitter->setZone(SPK::Sphere::create(SPK::Vector3D(),1.2f));
smokeEmitter->setFlow(25);
smokeEmitter->setForce(0.5f,1.0f);
// Groups
SPK::Group* fireGroup = SPK::Group::create(fireModel,135);
fireGroup->addEmitter(fireEmitter1);
fireGroup->addEmitter(fireEmitter2);
fireGroup->addEmitter(fireEmitter3);
fireGroup->addEmitter(fireEmitter4);
fireGroup->addEmitter(fireEmitter5);
fireGroup->setRenderer(fireRenderer);
fireGroup->setGravity(SPK::Vector3D(0.0f,0.0f,3.0f));
SPK::Group* smokeGroup = SPK::Group::create(smokeModel,135);
smokeGroup->addEmitter(smokeEmitter);
smokeGroup->setRenderer(smokeRenderer);
smokeGroup->setGravity(SPK::Vector3D(0.0f,0.0f,0.4f));
// System
SPK::System* particleSystem = SPK::System::create();
particleSystem->addGroup(smokeGroup);
particleSystem->addGroup(fireGroup);
return particleSystem->getSPKID();
}