//------------------------------------------------------------------------
int CTracerManager::EmitTracer(const STracerParams ¶ms, const EntityId bulletId)
{
if(!gEnv->IsClient())
return -1;
CRecordingSystem* pRecordingSystem = g_pGame->GetRecordingSystem();
if (pRecordingSystem)
{
if (!pRecordingSystem->OnEmitTracer(params))
{
return -1;
}
}
int idx = 0;
if(m_numActiveTracers < kMaxNumTracers)
{
//Add to end of array
idx = m_numActiveTracers;
m_tracerPool[idx].CreateEntity();
m_tracerPool[idx].Reset(params.position, params.destination);
m_numActiveTracers++;
}
else
{
//Find the oldest existing tracer and remove
assert(!"Too many tracers in existence! Removing oldest");
float oldest = 0.0f;
for(int i = 0; i < kMaxNumTracers; i++)
{
CryPrefetchUnsafe(&m_tracerPool[i+4]);
if(m_tracerPool[i].m_age > oldest)
{
oldest = m_tracerPool[i].m_age;
idx = i;
}
}
m_tracerPool[idx].Reset(params.position, params.destination);
}
CTracer& tracer = m_tracerPool[idx];
tracer.m_boundToBulletId = bulletId;
tracer.m_tracerFlags = kTracerFlag_active;
tracer.m_effectSlot = -1;
tracer.m_geometryOpacity = params.geometryOpacity;
if (params.geometry && params.geometry[0])
{
tracer.SetGeometry(params.geometry, params.scale);
tracer.m_tracerFlags |= kTracerFlag_useGeometry;
}
tracer.SetLifeTime(params.lifetime);
tracer.m_speed = params.speed;
tracer.m_pos = params.position;
tracer.m_startingPos = params.position;
tracer.m_dest = params.destination;
tracer.m_fadeOutTime = params.delayBeforeDestroy;
if(params.scaleToDistance)
{
tracer.m_tracerFlags |= kTracerFlag_scaleToDistance;
}
if(params.dontTranslate)
{
tracer.m_tracerFlags |= kTracerFlag_dontTranslate;
}
if(params.updateDestPosFromBullet)
{
tracer.m_tracerFlags |= kTracerFlag_updateDestFromBullet;
}
tracer.m_startFadeOutTime = params.startFadeOutTime;
tracer.m_scale = params.scale;
tracer.m_slideFrac = params.slideFraction;
if (IEntity *pEntity=gEnv->pEntitySystem->GetEntity(tracer.m_entityId))
{
pEntity->Hide(0);
}
// set effect after unhiding the entity, or else the particle emitter is created hidden
if (params.effect && params.effect[0])
tracer.SetEffect(params.effect, params.scale);
return idx;
}
