//-----------------------------------------------------------------------------
// The animation events will create particles on the attachment points
//-----------------------------------------------------------------------------
void C_EnvParticleScript::FireEvent( const Vector& origin, const QAngle& angles, int event, const char *options )
{
// Handle events to create + destroy particles
switch( event )
{
case CL_EVENT_SPRITEGROUP_CREATE:
{
char pAttachmentName[256];
char pSpriteName[256];
int nArgs = sscanf( options, "%255s %255s", pAttachmentName, pSpriteName );
if ( nArgs == 2 )
{
CreateParticle( pAttachmentName, pSpriteName );
}
}
return;
case CL_EVENT_SPRITEGROUP_DESTROY:
{
char pAttachmentName[256];
int nArgs = sscanf( options, "%255s", pAttachmentName );
if ( nArgs == 1 )
{
DestroyAllParticles( pAttachmentName );
}
}
return;
}
// Fall back
BaseClass::FireEvent( origin, angles, event, options );
}
// Destroy all particles in the system, drop a particle onto the fixture and
// keep track of the number of contacts with the fixture in addition to the
// stuck particle candiates.
void BodyContactTests::DropParticle()
{
// Reset counters.
m_contacts = 0;
m_stuck = 0;
DestroyAllParticles();
const float32 timeStep = 1.0f / 60.0f;
const int32 timeout = (int32)(1.0f / timeStep) * 10; // 10 "seconds"
const int32 velocityIterations = 6;
const int32 positionIterations = 2;
// Step once to eliminate particles.
m_world->Step(timeStep, velocityIterations, positionIterations);
b2ParticleDef pd;
pd.position.Set(0.0f, 33.0f);
pd.velocity.Set(0.0f, -1.0f);
m_particleSystem->CreateParticle(pd);
for (int32 i = 0; i < timeout; ++i)
{
m_world->Step(timeStep, velocityIterations, positionIterations);
m_contacts += m_particleSystem->GetBodyContactCount();
int32 stuck = m_particleSystem->GetStuckCandidateCount();
if (stuck)
{
m_stuck += stuck;
// Should always be particle 0.
EXPECT_EQ(*(m_particleSystem->GetStuckCandidates()), 0);
}
}
}
//-----------------------------------------------------------------------------
// Starts up the particle system
//-----------------------------------------------------------------------------
void C_EnvParticleScript::OnDataChanged( DataUpdateType_t updateType )
{
BaseClass::OnDataChanged( updateType );
if( updateType == DATA_UPDATE_CREATED )
{
ParticleMgr()->AddEffect( &m_ParticleEffect, this );
g_pClientLeafSystem->EnableRendering( RenderHandle(), false );
}
if ( m_nOldSequence != GetSequence() )
{
DestroyAllParticles();
}
}
