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bugfix(particlesys): Delay creation of particle emitters until ParticleSystemManager is xfer-loaded #2333

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bugfix(particlesys): Delay creation of particle emitters until ParticleSystemManager is xfer-loaded #2333

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1d09adb
bugfix(particlesys): Delay creation of particle emitters until postPr…
stephanmeesters Feb 20, 2026
ce85d68
Apply suggestions from code review
stephanmeesters Feb 22, 2026
d58f3a0
Update GeneralsMD/Code/GameEngine/Source/GameLogic/Object/Behavior/Au…
stephanmeesters Feb 22, 2026
2fe0d63
Delay emitters created in constructor to update/render loop
stephanmeesters Mar 14, 2026
1f55acd
refactor: Improve emitter functions perf and syntax
stephanmeesters Mar 15, 2026
3605bfe
Remove void
stephanmeesters Mar 15, 2026
751e978
Add assert in ParticleSystemManager
stephanmeesters Mar 27, 2026
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2 changes: 2 additions & 0 deletions Core/GameEngine/Source/GameClient/System/ParticleSys.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3346,6 +3346,8 @@ void ParticleSystemManager::xfer( Xfer *xfer )
}
else
{
DEBUG_ASSERTCRASH(m_allParticleSystemList.size()==0, ("ParticleSystemManager: particle systems list must be empty at start of xfer-load."));

const ParticleSystemTemplate *systemTemplate;

// read each particle system
Expand Down
46 changes: 26 additions & 20 deletions Core/GameEngineDevice/Source/W3DDevice/GameClient/Drawable/Draw/W3DTankDraw.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -106,7 +106,6 @@ W3DTankDraw::W3DTankDraw( Thing *thing, const ModuleData* moduleData )
m_lastDirection.y=0.0f;
m_lastDirection.z=0.0f;

createTreadEmitters();
}

//-------------------------------------------------------------------------------------------------
Expand All @@ -126,27 +125,33 @@ void W3DTankDraw::tossTreadEmitters()

//-------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------
void W3DTankDraw::createTreadEmitters()
static ParticleSystemID createParticleSystem( const AsciiString &name, const Drawable *drawable )
{
const AsciiString *treadDebrisNames[2];
static_assert(ARRAY_SIZE(treadDebrisNames) == ARRAY_SIZE(m_treadDebrisIDs), "Array size must match");
treadDebrisNames[0] = &getW3DTankDrawModuleData()->m_treadDebrisNameLeft;
treadDebrisNames[1] = &getW3DTankDrawModuleData()->m_treadDebrisNameRight;
const ParticleSystemTemplate *sysTemplate = TheParticleSystemManager->findTemplate(name);
ParticleSystem *particleSys = TheParticleSystemManager->createParticleSystem( sysTemplate );
if (!particleSys)
return INVALID_PARTICLE_SYSTEM_ID;

particleSys->attachToDrawable(drawable);
// important: mark it as do-not-save, since we'll just re-create it when we reload.
particleSys->setSaveable(FALSE);
// they come into being stopped.
particleSys->stop();

return particleSys->getSystemID();
}

for (size_t i = 0; i < ARRAY_SIZE(m_treadDebrisIDs); ++i)
void W3DTankDraw::createTreadEmitters()
{
if (getW3DTankDrawModuleData())
{
if (m_treadDebrisIDs[i] == INVALID_PARTICLE_SYSTEM_ID)
if (m_treadDebrisIDs[0] == INVALID_PARTICLE_SYSTEM_ID)
{
if (const ParticleSystemTemplate *sysTemplate = TheParticleSystemManager->findTemplate(*treadDebrisNames[i]))
{
ParticleSystem *particleSys = TheParticleSystemManager->createParticleSystem( sysTemplate );
particleSys->attachToDrawable(getDrawable());
// important: mark it as do-not-save, since we'll just re-create it when we reload.
particleSys->setSaveable(FALSE);
// they come into being stopped.
particleSys->stop();
m_treadDebrisIDs[i] = particleSys->getSystemID();
}
m_treadDebrisIDs[0] = createParticleSystem(getW3DTankDrawModuleData()->m_treadDebrisNameLeft, getDrawable());
}
if (m_treadDebrisIDs[1] == INVALID_PARTICLE_SYSTEM_ID)
{
m_treadDebrisIDs[1] = createParticleSystem(getW3DTankDrawModuleData()->m_treadDebrisNameRight, getDrawable());
}
}
}
Expand Down Expand Up @@ -310,6 +315,9 @@ void W3DTankDraw::doDrawModule(const Matrix3D* transformMtx)
if (obj == nullptr)
return;

// TheSuperHackers @bugfix stephanmeesters 14/03/2026 Delay emitter creation until draw
createTreadEmitters();

// get object physics state
PhysicsBehavior *physics = obj->getPhysics();
if (physics == nullptr)
Expand Down Expand Up @@ -435,8 +443,6 @@ void W3DTankDraw::loadPostProcess()
// extend base class
W3DModelDraw::loadPostProcess();

// toss any existing tread emitters and re-create 'em (since this module expects 'em to always be around)
tossTreadEmitters();
createTreadEmitters();

}
47 changes: 25 additions & 22 deletions Core/GameEngineDevice/Source/W3DDevice/GameClient/Drawable/Draw/W3DTankTruckDraw.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -119,7 +119,6 @@ m_prevRenderObj(nullptr)

m_treadCount=0;

createTreadEmitters();
}

//-------------------------------------------------------------------------------------------------
Expand Down Expand Up @@ -182,30 +181,33 @@ void W3DTankTruckDraw::setFullyObscuredByShroud(Bool fullyObscured)

//-------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------
static ParticleSystemID createParticleSystem( const AsciiString &name, const Drawable *drawable )
{
const ParticleSystemTemplate *sysTemplate = TheParticleSystemManager->findTemplate(name);
ParticleSystem *particleSys = TheParticleSystemManager->createParticleSystem( sysTemplate );
if (!particleSys)
return INVALID_PARTICLE_SYSTEM_ID;

particleSys->attachToDrawable(drawable);
// important: mark it as do-not-save, since we'll just re-create it when we reload.
particleSys->setSaveable(FALSE);
// they come into being stopped.
particleSys->stop();

return particleSys->getSystemID();
}

void W3DTankTruckDraw::createTreadEmitters()
{
if (getW3DTankTruckDrawModuleData())
{
const AsciiString *treadDebrisNames[2];
static_assert(ARRAY_SIZE(treadDebrisNames) == ARRAY_SIZE(m_treadDebrisIDs), "Array size must match");
treadDebrisNames[0] = &getW3DTankTruckDrawModuleData()->m_treadDebrisNameLeft;
treadDebrisNames[1] = &getW3DTankTruckDrawModuleData()->m_treadDebrisNameRight;

for (size_t i = 0; i < ARRAY_SIZE(m_treadDebrisIDs); ++i)
if (m_treadDebrisIDs[0] == INVALID_PARTICLE_SYSTEM_ID)
{
if (m_treadDebrisIDs[i] == INVALID_PARTICLE_SYSTEM_ID)
{
if (const ParticleSystemTemplate *sysTemplate = TheParticleSystemManager->findTemplate(*treadDebrisNames[i]))
{
ParticleSystem *particleSys = TheParticleSystemManager->createParticleSystem( sysTemplate );
particleSys->attachToDrawable(getDrawable());
// important: mark it as do-not-save, since we'll just re-create it when we reload.
particleSys->setSaveable(FALSE);
// they come into being stopped.
particleSys->stop();
m_treadDebrisIDs[i] = particleSys->getSystemID();
}
}
m_treadDebrisIDs[0] = createParticleSystem(getW3DTankTruckDrawModuleData()->m_treadDebrisNameLeft, getDrawable());
}
if (m_treadDebrisIDs[1] == INVALID_PARTICLE_SYSTEM_ID)
{
m_treadDebrisIDs[1] = createParticleSystem(getW3DTankTruckDrawModuleData()->m_treadDebrisNameRight, getDrawable());
}
}
}
Expand Down Expand Up @@ -504,6 +506,9 @@ void W3DTankTruckDraw::doDrawModule(const Matrix3D* transformMtx)
if (obj == nullptr)
return;

// TheSuperHackers @bugfix stephanmeesters 14/03/2026 Delay emitter creation until draw
createTreadEmitters();

if (getRenderObject()==nullptr) return;
if (getRenderObject() != m_prevRenderObj) {
updateBones();
Expand Down Expand Up @@ -761,8 +766,6 @@ void W3DTankTruckDraw::loadPostProcess()
// toss any existing wheel emitters (no need to re-create; we'll do that on demand)
tossWheelEmitters();

// toss any existing tread emitters and re-create 'em (since this module expects 'em to always be around)
tossTreadEmitters();
createTreadEmitters();

}
5 changes: 2 additions & 3 deletions GeneralsMD/Code/GameEngine/Include/GameLogic/Module/AutoHealBehavior.h
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Original file line number Diff line number Diff line change
Expand Up @@ -108,9 +108,7 @@ class AutoHealBehaviorModuleData : public UpdateModuleData
//-------------------------------------------------------------------------------------------------
class AutoHealBehavior : public UpdateModule,
public UpgradeMux,
public DamageModuleInterface
{

public DamageModuleInterface {
MEMORY_POOL_GLUE_WITH_USERLOOKUP_CREATE( AutoHealBehavior, "AutoHealBehavior" )
MAKE_STANDARD_MODULE_MACRO_WITH_MODULE_DATA( AutoHealBehavior, AutoHealBehaviorModuleData )

Expand Down Expand Up @@ -174,6 +172,7 @@ class AutoHealBehavior : public UpdateModule,
private:

void pulseHealObject( Object *obj );
void createEmitters();

ParticleSystemID m_radiusParticleSystemID;

Expand Down
2 changes: 2 additions & 0 deletions GeneralsMD/Code/GameEngine/Include/GameLogic/Module/GrantStealthBehavior.h
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Original file line number Diff line number Diff line change
Expand Up @@ -101,6 +101,8 @@ class GrantStealthBehavior : public UpdateModule
private:

void grantStealthToObject( Object *obj );
void createEmitters();

ParticleSystemID m_radiusParticleSystemID;
Real m_currentScanRadius;
};
36 changes: 21 additions & 15 deletions GeneralsMD/Code/GameEngine/Source/GameLogic/Object/Behavior/AutoHealBehavior.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -94,21 +94,6 @@ AutoHealBehavior::AutoHealBehavior( Thing *thing, const ModuleData* moduleData )
m_radiusParticleSystemID = INVALID_PARTICLE_SYSTEM_ID;
m_soonestHealFrame = 0;
m_stopped = false;
Object *obj = getObject();

{
if( d->m_radiusParticleSystemTmpl )
{
ParticleSystem *particleSystem;

particleSystem = TheParticleSystemManager->createParticleSystem( d->m_radiusParticleSystemTmpl );
if( particleSystem )
{
particleSystem->setPosition( obj->getPosition() );
m_radiusParticleSystemID = particleSystem->getSystemID();
}
}
}

if (d->m_initiallyActive)
{
Expand Down Expand Up @@ -194,6 +179,9 @@ UpdateSleepTime AutoHealBehavior::update()
return UPDATE_SLEEP_FOREVER;
}

// TheSuperHackers @bugfix stephanmeesters 14/03/2026 Delay emitter creation until update
createEmitters();

//DEBUG_LOG(("doing auto heal %d",TheGameLogic->getFrame()));

if( d->m_affectsWholePlayer )
Expand Down Expand Up @@ -373,4 +361,22 @@ void AutoHealBehavior::loadPostProcess()
// extend base class
UpgradeMux::upgradeMuxLoadPostProcess();

createEmitters();

}

// ------------------------------------------------------------------------------------------------
// ------------------------------------------------------------------------------------------------
void AutoHealBehavior::createEmitters()
{
if( m_radiusParticleSystemID == INVALID_PARTICLE_SYSTEM_ID )
{
const AutoHealBehaviorModuleData *d = getAutoHealBehaviorModuleData();
ParticleSystem *particleSystem = TheParticleSystemManager->createParticleSystem(d->m_radiusParticleSystemTmpl);
if( particleSystem )
{
particleSystem->setPosition( getObject()->getPosition() );
m_radiusParticleSystemID = particleSystem->getSystemID();
}
}
}
38 changes: 20 additions & 18 deletions GeneralsMD/Code/GameEngine/Source/GameLogic/Object/Behavior/GrantStealthBehavior.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -96,24 +96,7 @@ GrantStealthBehavior::GrantStealthBehavior( Thing *thing, const ModuleData* modu

m_currentScanRadius = d->m_startRadius;


Object *obj = getObject();

{
if( d->m_radiusParticleSystemTmpl )
{
ParticleSystem *particleSystem;

particleSystem = TheParticleSystemManager->createParticleSystem( d->m_radiusParticleSystemTmpl );
if( particleSystem )
{
particleSystem->setPosition( obj->getPosition() );
m_radiusParticleSystemID = particleSystem->getSystemID();
}
}
}

setWakeFrame( getObject(), UPDATE_SLEEP_NONE );
setWakeFrame( getObject(), UPDATE_SLEEP_NONE );
}

//-------------------------------------------------------------------------------------------------
Expand All @@ -139,6 +122,9 @@ UpdateSleepTime GrantStealthBehavior::update()
if ( self->isEffectivelyDead())
return UPDATE_SLEEP_FOREVER;

// TheSuperHackers @bugfix stephanmeesters 14/03/2026 Delay emitter creation until update
createEmitters();

const GrantStealthBehaviorModuleData *d = getGrantStealthBehaviorModuleData();
// setup scan filters
PartitionFilterRelationship relationship( self, PartitionFilterRelationship::ALLOW_ALLIES );
Expand Down Expand Up @@ -246,5 +232,21 @@ void GrantStealthBehavior::loadPostProcess()
// extend base class
UpdateModule::loadPostProcess();

createEmitters();
}

// ------------------------------------------------------------------------------------------------
// ------------------------------------------------------------------------------------------------
void GrantStealthBehavior::createEmitters()
{
if( m_radiusParticleSystemID == INVALID_PARTICLE_SYSTEM_ID )
{
const GrantStealthBehaviorModuleData *d = getGrantStealthBehaviorModuleData();
ParticleSystem *particleSystem = TheParticleSystemManager->createParticleSystem(d->m_radiusParticleSystemTmpl);
if( particleSystem )
{
particleSystem->setPosition( getObject()->getPosition() );
m_radiusParticleSystemID = particleSystem->getSystemID();
}
}
}
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