/*
Code for this method taken from http://www.ogre3d.org/forums/viewtopic.php?p=176603&sid=ffef6c25bddf82213f3b1e0daf228657#p176603
Adapted for use in this program by Michael Y.M. Kong
*/
void ProjectileManager::scaleBy(Ogre::Real factor, Ogre::ParticleSystem* pSys_)
{
Ogre::Real temp;
temp = pSys_->getDefaultWidth();
temp *= factor;
pSys_->setDefaultWidth( temp );
temp = pSys_->getDefaultHeight();
temp *= factor;
pSys_->setDefaultHeight( temp );
for(unsigned short i=0; i<pSys_->getNumEmitters(); ++i)
{
Ogre::ParticleEmitter* emitt = pSys_->getEmitter(i);
Ogre::Vector3 pos = emitt->getPosition();
Ogre::Real particleVelocity = emitt->getParticleVelocity();
Ogre::Real minParticleVelocity = emitt->getMinParticleVelocity();
Ogre::Real maxParticleVelocity = emitt->getMaxParticleVelocity();
pos *= factor;
particleVelocity *= factor;
minParticleVelocity *= factor;
maxParticleVelocity *= factor;
emitt->setPosition(pos);
emitt->setParticleVelocity(particleVelocity);
emitt->setMinParticleVelocity(minParticleVelocity);
emitt->setMaxParticleVelocity(maxParticleVelocity);
}
}
void Main::onInitialize() {
auto scene = addScene(new dt::Scene("testscene"));
dt::ResourceManager::get()->addResourceLocation("sinbad.zip","Zip", true);
dt::ResourceManager::get()->addResourceLocation("particle/","FileSystem", true);
Ogre::ResourceGroupManager::getSingleton().initialiseAllResourceGroups();
// make a scene
auto camnode = scene->addChildNode(new dt::Node("camnode"));
camnode->setPosition(Ogre::Vector3(0, 2, 10));
camnode->addComponent(new dt::CameraComponent("cam"))->lookAt(Ogre::Vector3(0, 2, 0));;
auto p = scene->addChildNode(new dt::Node("p"));
p->setScale(0.2);
auto mesh = p->addComponent(new dt::MeshComponent("Sinbad.mesh"));
mesh->setAnimation("RunBase");
mesh->setLoopAnimation(true);
mesh->playAnimation();
auto path =
p->addComponent(new dt::FollowPathComponent(dt::FollowPathComponent::LOOP));
path->addPoint(Ogre::Vector3(-10, 0, 0));
path->addPoint(Ogre::Vector3(10, 0, 0));
path->setDuration(2.f);
path->setFollowRotation(true);
// create the particle system
auto p_sys = p->addComponent(new dt::ParticleSystemComponent("p_sys"));
p_sys->setMaterialName("Test/Particle");
p_sys->setParticleCountLimit(1000);
p_sys->getOgreParticleSystem()->setDefaultDimensions(0.03, 0.03);
Ogre::ParticleEmitter* e = p_sys->addEmitter("emit1", "Point");
e->setAngle(Ogre::Degree(10));
e->setColour(Ogre::ColourValue(1.f, 0.6f, 0.f), Ogre::ColourValue(0.2f, 0.8f, 0.2f));
e->setEmissionRate(100);
e->setParticleVelocity(3.f, 4.f);
e->setTimeToLive(1.f, 2.f);
p_sys->addScalerAffector("scaler", 1.05);
p_sys->addLinearForceAffector("force", Ogre::Vector3(0, 5, 0));
Ogre::ParticleAffector* a = p_sys->addAffector("colour_interpolator", "ColourInterpolator");
a->setParameter("time0", "0");
a->setParameter("colour0", "1 1 0 1");
a->setParameter("time1", "0.5");
a->setParameter("colour1", "1 0.3 0 1");
a->setParameter("time2", "1");
a->setParameter("colour2", "1 0 0 0");
}
void OGRERendererRacer::update() {
mpVehicle = mpApp->mRacer;
const cml::vector3d& pos = mpVehicle->mPos;
mVehicleNode->setPosition(pos[0], pos[1], pos[2]);
Ogre::Quaternion q;
const quat& orientation = mpVehicle->getOrientation();
q.w = orientation.as_vector()[0];
q.x = orientation.as_vector()[1];
q.y = orientation.as_vector()[2];
q.z = orientation.as_vector()[3];
if (q != mOrientation) {
Ogre::Quaternion transition = q * mOrientation.Inverse();
Ogre::Radian a;
Ogre::Vector3 v;
transition.ToAngleAxis(a, v);
if (a.valueDegrees() > 0.1) {
Ogre::Quaternion t2;
// TODO 3: Make rotation speed configurable
t2.FromAngleAxis(a * 0.05, v);
mOrientation = t2 * mOrientation;
} else {
mOrientation = q;
}
}
//################# BEGIN Construct Sideward thrust roll quaternion ################
// cml::vector3f velDirSidewardComponent = cml::dot(mpVehicle->mDirLeft, mpVehicle->mVelocity) * mpVehicle->mDirLeft;
if (mpVehicle->mAddThrustLeft || mpVehicle->mAddThrustRight) {
mRollAngle = -mpVehicle->mThrustSideward * 500;
} else {
mRollAngle *= 0.98;
}
float dot = cml::dot(mpVehicle->mDirLeft, mpVehicle->mVelocity);
mRollAngle = -dot * 50;
Ogre::Quaternion qSidewardThrustRoll(Ogre::Degree(mRollAngle), Ogre::Vector3(0, 0, -1));
cml::vector3f g = mpVehicle->getGravity();
cml::vector3f velDirGravityComponent = cml::dot(g, mpVehicle->mVelocity) * g;
dot = cml::dot(velDirGravityComponent, g);
if (velDirGravityComponent.length() > 0.000001) {
mPitchAngle = -cml::sign(dot) * velDirGravityComponent.length() * 500000;
} else {
if (mpVehicle->mAddThrustForward && mPitchAngle > -7) {
mPitchAngle -= 0.1;
} else {
mPitchAngle *= 0.95;
}
}
Ogre::Quaternion qForwardThrustPitch(Ogre::Degree(mPitchAngle), Ogre::Vector3(1, 0, 0));
//################# END Construct Sideward thrust roll quaternion ################
bool mSidewardThrustRollCamera = false;
if (mSidewardThrustRollCamera) {
// Roll both vehicle and camera:
mVehicleNode->setOrientation(q * qSidewardThrustRoll * qForwardThrustPitch);
} else {
// Roll only the vehicle, not the camera:
mVehicleNode->setOrientation(mOrientation);
mVehicleMeshNode->setOrientation(qSidewardThrustRoll * qForwardThrustPitch);
}
//############# BEGIN Update engine particle emitters ####################
// TODO 1: Reimplement
bool emit = (mpVehicle->mGameState == 0) && mpVehicle->mThrustForward > 0;
mEngineFlameParticleSystem->setEmitting(emit);
mEngineSmokeParticleSystem->setEmitting(emit);
Ogre::ParticleEmitter* emitter = mEngineFlameParticleSystem->getEmitter(0);
emitter->setParticleVelocity(mpVehicle->mThrustForward * 6000);
emitter->setEmissionRate(mpVehicle->mThrustForward * 10000);
emitter = mEngineSmokeParticleSystem->getEmitter(0);
emitter->setEmissionRate(mpVehicle->mThrustForward * 7000);
//############# END Update engine particle emitters ####################
}