void CParticleSystemManager :: UpdateSystems( void )
{
float frametime;
static int framecount = -1;
AURSTATE state;
// HACKHACK: don't evaluate particles when executes many times at same frame
// e.g. mirror rendering
if( framecount != tr.realframecount )
{
frametime = RI.refdef.frametime;
framecount = tr.realframecount;
}
else frametime = 0.0f;
CParticleSystem *pSystem;
CParticleSystem *pLast = NULL;
pSystem = m_pFirstSystem;
while( pSystem )
{
state = pSystem->UpdateSystem( frametime );
if( state != AURORA_REMOVE )
{
if( state == AURORA_DRAW )
pSystem->DrawSystem();
pLast = pSystem;
pSystem = pSystem->m_pNextSystem;
}
else
{
// delete this system
if( pLast )
{
pLast->m_pNextSystem = pSystem->m_pNextSystem;
delete pSystem;
pSystem = pLast->m_pNextSystem;
}
else
{
// deleting the first system
m_pFirstSystem = pSystem->m_pNextSystem;
delete pSystem;
pSystem = m_pFirstSystem;
}
}
}
gEngfuncs.pTriAPI->RenderMode(kRenderNormal);
}
// updates all systems
void CParticleSystemManager::UpdateSystems( void )
{
CParticleSystem *pSystem = NULL;
signed int i = 0;
signed int iSystems = (signed)m_pParticleSystems.size();
// iterate through all the particle systems, drawing each
for (; i < iSystems; i++)
{
pSystem = m_pParticleSystems[i];
// remove the system if the system requests it
if( pSystem && pSystem->DrawSystem() == false)
{
delete pSystem;
m_pParticleSystems.erase((m_pParticleSystems.begin() + i));
i--;
iSystems--;
}
}
// we couldn't return earlier as we need to have the sorting before the ps updating
// however no sorting when we can't see the particles
if(CheckDrawSystem() == false)
return;
int iParticles = m_pParticles.size();
if(iParticles > 1) {
// calculate the fraction of a second between sorts
float flTimeSinceLastSort = (gEngfuncs.GetClientTime() - m_flLastSort);
// 1 / time between sorts will give us a number like 5
// if it is less than the particlesorts cvar then it is a small value
// and therefore a long time since last sort
if((((int)(1 / flTimeSinceLastSort)) < g_ParticleSorts->value)) {
m_flLastSort = gEngfuncs.GetClientTime();
std::sort(m_pParticles.begin(), m_pParticles.end(), less_than);
}
}
if(iParticles > 0) {
// prepare opengl
Particle_InitOpenGL();
float flTimeSinceLastDraw = TimeSinceLastDraw();
// loop through all particles drawing them
// they have already been tested and updated in their pss' draw sys func
// we've reversed the greater than order, so that oldest particles are at 0
// further away particles and recently added particles get drawn first
CParticle *pParticle = NULL;
for(i = 0; i < iParticles ; i++)
{
if(m_pParticles[i]) {
pParticle = m_pParticles[i];
if(pParticle && pParticle->Test()) {
pParticle->Update(flTimeSinceLastDraw);
if(g_iUser1 != OBS_MAP_FREE && g_iUser1 != OBS_MAP_CHASE) {
// unfortunately we have to prepare every particle now
// as we can't prepare for a batch of the same type anymore
pParticle->Prepare();
pParticle->Draw();
}
} else {
RemoveParticle(pParticle);
i--;
iParticles--;
}
}
}
Particle_FinishOpenGL();
}
// print out how fast we've been drawing the systems in debug mode
if (g_ParticleDebug->value != 0 && ((m_flLastSort + 0.5) <= gEngfuncs.GetClientTime()))
{
gEngfuncs.Con_Printf("%i Particles Drawn this pass in %i systems ", m_pParticles.size(), m_pParticleSystems.size());
gEngfuncs.Con_Printf("%i Textures in Cache\n\0", m_pTextures.size());
}
m_flLastDraw = gEngfuncs.GetClientTime();
}
