//------------------------------------------------------------------------
void CTracerManager::Update(float frameTime)
{
CryPrefetch(m_tracerPool);
const CCamera& viewCamera = gEnv->pSystem->GetViewCamera();
const Vec3 cameraPosition = viewCamera.GetPosition();
const float viewCameraFovScale = viewCamera.GetFov() / DEG2RAD(g_pGame->GetFOV());
const int kNumActiveTracers = m_numActiveTracers;
for(int i = 0; i < kNumActiveTracers;)
{
int nextTracerIndex = i + 1;
CTracer& tracer = m_tracerPool[i];
CryPrefetch(&m_tracerPool[nextTracerIndex]);
//Update
const bool stillMoving = tracer.Update(frameTime, cameraPosition, viewCameraFovScale);
//Is it worth putting this in another loop for instruction cache coherency? Profile when PS3 is up and running - Rich S
if(stillMoving || (tracer.m_fadeOutTime > 0.f))
{
tracer.m_tracerFlags |= kTracerFlag_active;
if (!stillMoving)
{
tracer.m_fadeOutTime -= frameTime;
if (tracer.m_effectSlot > -1)
{
if (IEntity *pEntity = gEnv->pEntitySystem->GetEntity(tracer.m_entityId))
{
IParticleEmitter * emitter = pEntity->GetParticleEmitter(tracer.m_effectSlot);
if (emitter)
{
emitter->Activate(false);
}
if (tracer.m_tracerFlags & kTracerFlag_useGeometry)
{
pEntity->SetSlotFlags(tracer.m_geometrySlot, pEntity->GetSlotFlags(tracer.m_geometrySlot) &~ (ENTITY_SLOT_RENDER|ENTITY_SLOT_RENDER_NEAREST));
}
tracer.m_effectSlot = -1;
}
}
if(tracer.m_tracerFlags & kTracerFlag_useGeometry)
{
// Fade out geometry
if((tracer.m_fadeOutTime < tracer.m_startFadeOutTime) && (tracer.m_startFadeOutTime > 0.0f))
{
if (IEntity *pEntity = gEnv->pEntitySystem->GetEntity(tracer.m_entityId))
{
IEntityRenderProxy *pRenderProxy = (IEntityRenderProxy*)pEntity->GetProxy(ENTITY_PROXY_RENDER);
pRenderProxy->SetOpacity(max((tracer.m_fadeOutTime / tracer.m_startFadeOutTime) * tracer.m_geometryOpacity, 0.0f));
}
}
}
}
}
else
{
tracer.m_tracerFlags &= ~kTracerFlag_active;
tracer.m_boundToBulletId = 0;
}
i = nextTracerIndex;
}
//This is where we clear out the inactive tracers, so the counter isn't const
int numActiveTracers = kNumActiveTracers;
CWeaponSystem* pWeaponSystem = g_pGame->GetWeaponSystem();
for(int i = kNumActiveTracers - 1; i >= 0;)
{
int nextIndex = i - 1;
CTracer& tracer = m_tracerPool[i];
CryPrefetch(&m_tracerPool[nextIndex]);
if(!(tracer.m_tracerFlags & kTracerFlag_active))
{
if (IEntity *pEntity=gEnv->pEntitySystem->GetEntity(tracer.m_entityId))
{
pEntity->Hide(true);
pEntity->FreeSlot(TRACER_GEOM_SLOT);
pEntity->FreeSlot(TRACER_FX_SLOT);
}
//Switch the inactive tracer so it's at the end of the array;
const int lastTracer = numActiveTracers - 1;
static CTracer temp;
temp = tracer;
numActiveTracers = lastTracer;
tracer = m_tracerPool[lastTracer];
m_tracerPool[lastTracer] = temp;
//Re-bind index to the corresponding bullet
if (tracer.m_boundToBulletId)
{
CProjectile* pProjectile = pWeaponSystem->GetProjectile(tracer.m_boundToBulletId);
if (pProjectile && pProjectile->IsAlive())
{
if(lastTracer == pProjectile->GetTracerIdx())
{
pProjectile->BindToTracer(i);
}
else if(lastTracer == pProjectile->GetThreatTrailTracerIdx())
{
pProjectile->BindToThreatTrailTracer(i);
}
}
}
}
i = nextIndex;
}
m_numActiveTracers = numActiveTracers;
}
