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Simplified smoke system (to use only one particle system instead of two),

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and improved the origin of the smoke to be the actual position of the
wheels (though this is sometimes still not 'correct' enough atm).


git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/branches/irrlicht@3602 178a84e3-b1eb-0310-8ba1-8eac791a3b58
This commit is contained in:
hikerstk
2009-06-10 13:04:30 +00:00
parent ba7c983d18
commit c0ab52bfb3
2 changed files with 41 additions and 55 deletions
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88
src/graphics/smoke.cpp
View File

@@ -24,56 +24,38 @@
#include "graphics/irr_driver.hpp"
#include "io/file_manager.hpp"
#include "karts/kart.hpp"
#include "physics/btKart.hpp"
#include "utils/constants.hpp"
Smoke::Smoke(Kart* kart) : m_kart(kart)
Smoke::Smoke(Kart* kart) : m_kart(kart), m_particle_size(0.33f)
{
const float particle_size = 0.33f;
// Left wheel
m_node_l = irr_driver->addParticleNode();
m_node_l->setParent(m_kart->getNode());
m_node_l->setPosition(core::vector3df(-m_kart->getKartWidth()*0.35f, particle_size*0.25f, -m_kart->getKartLength()*0.5f)); // Should use (behind) wheel pos
Material *ml= material_manager->getMaterial("smoke.png");
ml->setMaterialProperties(&(m_node_l->getMaterial(0)));
m_node_l->setMaterialTexture(0, ml->getTexture());
m_node = irr_driver->addParticleNode();
// Note: the smoke system is NOT child of the kart, since bullet
// gives the position of the wheels on the ground in world coordinates.
// So it's easier not to move the particle system with the kart, and set
// the position directly from the wheel coordinates.
m_node->setPosition(core::vector3df(-m_kart->getKartWidth()*0.35f,
m_particle_size*0.25f,
-m_kart->getKartLength()*0.5f));
Material *m= material_manager->getMaterial("smoke.png");
m->setMaterialProperties(&(m_node->getMaterial(0)));
m_node->setMaterialTexture(0, m->getTexture());
m_emitter_l = m_node_l->createPointEmitter(core::vector3df(0, 0, 0), // velocity in m/ms
m_emitter = m_node->createPointEmitter(core::vector3df(0, 0, 0), // velocity in m/ms
5, 10,
video::SColor(255,0,0,0),
video::SColor(255,255,255,255),
300, 500,
20 // max angle
);
m_emitter_l->setMinStartSize(core::dimension2df(particle_size/1.5f, particle_size/1.5f));
m_emitter_l->setMaxStartSize(core::dimension2df(particle_size*1.5f, particle_size*1.5f));
m_node_l->setEmitter(m_emitter_l); // this grabs the emitter
m_emitter->setMinStartSize(core::dimension2df(m_particle_size/1.5f, m_particle_size/1.5f));
m_emitter->setMaxStartSize(core::dimension2df(m_particle_size*1.5f, m_particle_size*1.5f));
m_node->setEmitter(m_emitter); // this grabs the emitter
scene::IParticleFadeOutAffector *afl = m_node_l->createFadeOutParticleAffector(video::SColor(0, 255, 0, 0), 500);
m_node_l->addAffector(afl);
afl->drop();
scene::IParticleFadeOutAffector *af = m_node->createFadeOutParticleAffector(video::SColor(0, 255, 0, 0), 500);
m_node->addAffector(af);
af->drop();
// Right wheel
m_node_r = irr_driver->addParticleNode();
m_node_r->setParent(m_kart->getNode());
m_node_r->setPosition(core::vector3df(m_kart->getKartWidth()*0.35f, particle_size*0.25f, -m_kart->getKartLength()*0.5f)); // Should use (behind) wheel pos
Material *mr= material_manager->getMaterial("smoke.png");
mr->setMaterialProperties(&(m_node_r->getMaterial(0)));
m_node_r->setMaterialTexture(0, mr->getTexture());
m_emitter_r = m_node_r->createPointEmitter(core::vector3df(0, 0, 0), // velocity in m/ms
5, 10,
video::SColor(255,0,0,0),
video::SColor(255,255,255,255),
300, 500,
20 // max angle
);
m_emitter_r->setMinStartSize(core::dimension2df(particle_size/1.5f, particle_size/1.5f));
m_emitter_r->setMaxStartSize(core::dimension2df(particle_size*1.5f, particle_size*1.5f));
m_node_r->setEmitter(m_emitter_r); // this grabs the emitter
scene::IParticleFadeOutAffector *afr = m_node_r->createFadeOutParticleAffector(video::SColor(255, 255, 0, 0), 500);
m_node_r->addAffector(afr);
afr->drop();
} // KartParticleSystem
//-----------------------------------------------------------------------------
@@ -81,33 +63,37 @@ Smoke::Smoke(Kart* kart) : m_kart(kart)
*/
Smoke::~Smoke()
{
irr_driver->removeNode(m_node_l);
irr_driver->removeNode(m_node_r);
irr_driver->removeNode(m_node);
} // ~Smoke
//-----------------------------------------------------------------------------
void Smoke::update(float t)
{
// No particles to emit, no need to change the speed
if(m_emitter_l->getMinParticlesPerSecond()==0)
if(m_emitter->getMinParticlesPerSecond()==0)
return;
static int left=1;
left = 1-left;
const btWheelInfo &wi = m_kart->getVehicle()->getWheelInfo(left ? 3 : 2);
Vec3 c=wi.m_raycastInfo.m_contactPointWS;
// FIXME: the X position is not yet always accurate.
m_node->setPosition(core::vector3df(c.getX()+ m_particle_size*0.25f * (left?+1:-1),
c.getZ()+m_particle_size*0.25f,
c.getY()));
// There seems to be no way to randomise the velocity for particles,
// so we have to do this manually, by changing the default velocity.
// Irrlicht expects velocity (called 'direction') in m/ms!!
Vec3 dirl(cos(DEGREE_TO_RAD(rand()%180))*0.002f,
Vec3 dir(cos(DEGREE_TO_RAD(rand()%180))*0.002f,
sin(DEGREE_TO_RAD(rand()%180))*0.002f,
sin(DEGREE_TO_RAD(rand()%100))*0.002f);
m_emitter_l->setDirection(dirl.toIrrVector());
Vec3 dirr(cos(DEGREE_TO_RAD(rand()%180))*0.002f,
sin(DEGREE_TO_RAD(rand()%180))*0.002f,
sin(DEGREE_TO_RAD(rand()%100))*0.002f);
m_emitter_r->setDirection(dirr.toIrrVector());
m_emitter->setDirection(dir.toIrrVector());
} // update
//-----------------------------------------------------------------------------
void Smoke::setCreationRate(float f)
{
m_emitter_l->setMinParticlesPerSecond(int(f));
m_emitter_l->setMaxParticlesPerSecond(int(f));
m_emitter_r->setMinParticlesPerSecond(int(f));
m_emitter_r->setMaxParticlesPerSecond(int(f));
m_emitter->setMinParticlesPerSecond(int(f));
m_emitter->setMaxParticlesPerSecond(int(f));
} // setCreationRate

8
src/graphics/smoke.hpp
View File

@@ -31,12 +31,12 @@ private:
/** The kart to which this smoke belongs. */
const Kart *m_kart;
/** Irrlicht's particle systems. */
scene::IParticleSystemSceneNode *m_node_l; /* left wheel */
scene::IParticleSystemSceneNode *m_node_r; /* right wheel */
scene::IParticleSystemSceneNode *m_node; /* left wheel */
/** The emitters. Access to these is needed to adjust the number of
* particles per second. */
scene::IParticleEmitter *m_emitter_l;
scene::IParticleEmitter *m_emitter_r;
scene::IParticleEmitter *m_emitter;
/** Size of the particles. */
const float m_particle_size;
public:
Smoke (Kart* kart);
virtual ~Smoke ();