Plays a particle effect at the location of the game object. More...

#include <ParticleComponent.h>

Inheritance diagram for ezParticleComponent:

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Public Member Functions
virtual void	SerializeComponent (ezWorldWriter &inout_stream) const override
	Override this to save the current state of the component to the given stream. More...

virtual void	DeserializeComponent (ezWorldReader &inout_stream) override
	Override this to load the current state of the component from the given stream. More...

virtual ezResult	GetLocalBounds (ezBoundingBoxSphere &ref_bounds, bool &ref_bAlwaysVisible, ezMsgUpdateLocalBounds &ref_msg) override
	Called by ezRenderComponent::OnUpdateLocalBounds(). More...

bool	StartEffect ()
	Starts a new particle effect. If one is already running, it will be stopped (but not interrupted) and a new one is started as well. More...

void	StopEffect ()
	Stops emitting further particles, making any existing particle system stop in a finite amount of time.

void	InterruptEffect ()
	Cancels the entire effect immediately, it will pop out of existence.

bool	IsEffectActive () const
	Returns true, if an effect is currently in a state where it might emit new particles.

void	OnMsgSetPlaying (ezMsgSetPlaying &ref_msg)
	Forwards to StartEffect() or StopEffect().

void	OnMsgInterruptPlaying (ezMsgInterruptPlaying &ref_msg)
	Forwards to InterruptEffect().

void	SetParticleEffect (const ezParticleEffectResourceHandle &hEffect)
	Replaces the effect to be played.

const EZ_ALWAYS_INLINE ezParticleEffectResourceHandle &	GetParticleEffect () const

void	SetParticleEffectFile (ezStringView sFile)

ezStringView	GetParticleEffectFile () const

const ezRangeView< const char *, ezUInt32 >	GetParameters () const

void	SetParameter (const char *szKey, const ezVariant &value)

void	RemoveParameter (const char *szKey)

bool	GetParameter (const char *szKey, ezVariant &out_value) const

Public Member Functions inherited from ezRenderComponent
void	TriggerLocalBoundsUpdate ()
	Call this when some value was modified that affects the size of the local bounding box and it should be recomputed.

EZ_ALWAYS_INLINE ezUInt32	GetUniqueIdForRendering (ezUInt32 uiInnerIndex=0, ezUInt32 uiInnerIndexShift=24) const
	Computes a unique ID for the given component, that is usually given to the renderer to distinguish objects.

Public Member Functions inherited from ezComponent
void	SetActiveFlag (bool bEnabled)
	Sets the active flag of the component, which affects its active state. More...

bool	GetActiveFlag () const
	Checks whether the 'active flag' is set on this component. Note that this does not mean that the component is also 'active'. More...

bool	IsActive () const
	Checks whether this component is in an active state. More...

bool	IsActiveAndInitialized () const
	Returns whether this component is active and initialized. More...

bool	IsActiveAndSimulating () const
	Whether the component is currently active and simulation has been started as well. More...

ezComponentManagerBase *	GetOwningManager ()
	Returns the corresponding manager for this component.

const ezComponentManagerBase *	GetOwningManager () const
	Returns the corresponding manager for this component.

ezGameObject *	GetOwner ()
	Returns the owner game object if the component is attached to one or nullptr.

const ezGameObject *	GetOwner () const
	Returns the owner game object if the component is attached to one or nullptr.

ezWorld *	GetWorld ()
	Returns the corresponding world for this component.

const ezWorld *	GetWorld () const
	Returns the corresponding world for this component.

ezComponentHandle	GetHandle () const
	Returns a handle to this component.

ezUInt32	GetUniqueID () const
	Returns the unique id for this component.

void	SetUniqueID (ezUInt32 uiUniqueID)
	Sets the unique id for this component.

void	EnsureInitialized ()
	Ensures that the component is initialized. Must only be called from another component's Initialize callback.

void	EnsureSimulationStarted ()
	Ensures that the OnSimulationStarted method has been called. Must only be called from another component's OnSimulationStarted callback.

EZ_ALWAYS_INLINE bool	SendMessage (ezMessage &ref_msg)
	Sends a message to this component.

EZ_ALWAYS_INLINE bool	SendMessage (ezMessage &ref_msg) const

void	PostMessage (const ezMessage &msg, ezTime delay=ezTime::MakeZero(), ezObjectMsgQueueType::Enum queueType=ezObjectMsgQueueType::NextFrame) const
	Queues the message for the given phase. The message is processed after the given delay in the corresponding phase.

virtual bool	HandlesMessage (const ezMessage &msg) const
	Returns whether the given Message is handled by this component.

void	SetUserFlag (ezUInt8 uiFlagIndex, bool bSet)
	Be careful to check which flags may already be in use by base classes.

bool	GetUserFlag (ezUInt8 uiFlagIndex) const
	Retrieves a custom flag. Index must be between 0 and 7.

void	SetCreatedByPrefab ()
	Adds ezObjectFlags::CreatedByPrefab to the component. See the flag for details.

bool	WasCreatedByPrefab () const
	Checks whether the ezObjectFlags::CreatedByPrefab flag is set on this component.

Public Member Functions inherited from ezReflectedClass
virtual const ezRTTI *	GetDynamicRTTI () const

bool	IsInstanceOf (const ezRTTI *pType) const
	Returns whether the type of this instance is of the given type or derived from it.

template<typename T >
EZ_ALWAYS_INLINE bool	IsInstanceOf () const
	Returns whether the type of this instance is of the given type or derived from it.

Public Attributes
ezUInt64	m_uiRandomSeed = 0
	If zero, the played effect is randomized each time. Use a fixed seed when the result should be deterministic.

ezString	m_sSharedInstanceName
	If set, the component reuses the simulation state of another particle component with the same name. More...

bool	m_bSpawnAtStart = true
	If false, the effect starts in a paused state.

bool	m_bIgnoreOwnerRotation = false
	If true, the owner rotation is assumed to be identity. Useful for effects that need to always point in one direction (e.g. up).

ezEnum< ezOnComponentFinishedAction2 >	m_OnFinishedAction
	What to do when the effect is finished playing.

ezTime	m_MinRestartDelay
	Minimum delay between finishing and restarting.

ezTime	m_RestartDelayRange
	Random additional delay between finishing and restarting.

ezEnum< ezBasisAxis >	m_SpawnDirection = ezBasisAxis::PositiveZ
	The local direction into which to spawn the effect.

ezParticleEffectController	m_EffectController
	Allows more fine grain control over the effect execution.

Protected Member Functions
virtual void	OnDeactivated () override
	This method is called when the component gets deactivated. More...

void	Update ()

ezTransform	GetPfxTransform () const

void	UpdatePfxTransformAndBounds ()

void	OnMsgExtractRenderData (ezMsgExtractRenderData &msg) const

void	OnMsgDeleteGameObject (ezMsgDeleteGameObject &msg)

Protected Member Functions inherited from ezRenderComponent
virtual void	Deinitialize () override
	This method is called before the component is destroyed. A derived type can override this method to do common de-initialization work. More...

virtual void	OnActivated () override
	This method is called when the component gets activated. More...

void	OnUpdateLocalBounds (ezMsgUpdateLocalBounds &msg)

void	InvalidateCachedRenderData ()

Protected Member Functions inherited from ezComponent
	ezComponent ()
	Keep the constructor private or protected in derived classes, so it cannot be called manually.

bool	IsDynamic () const
	Returns whether this component is dynamic and thus can only be attached to dynamic game objects.

virtual ezWorldModuleTypeId	GetTypeId () const =0

virtual ezComponentMode::Enum	GetMode () const =0

virtual void	Initialize ()
	Can be overridden for basic initialization that depends on a valid hierarchy and position. More...

virtual void	OnSimulationStarted ()
	This method is called once for active components, at the start of the next world update, but only when the world is simulated. More...

void	EnableUnhandledMessageHandler (bool enable)
	By default disabled. Enable to have OnUnhandledMessage() called for every unhandled message.

virtual bool	OnUnhandledMessage (ezMessage &msg, bool bWasPostedMsg)
	When EnableUnhandledMessageHandler() was activated, this is called for all messages for which there is no dedicated message handler. More...

virtual bool	OnUnhandledMessage (ezMessage &msg, bool bWasPostedMsg) const
	When EnableUnhandledMessageHandler() was activated, this is called for all messages for which there is no dedicated message handler. More...

bool	IsInitialized () const

bool	IsInitializing () const

bool	IsSimulationStarted () const

Protected Attributes
ezParticleEffectResourceHandle	m_hEffectResource

ezTime	m_RestartTime

bool	m_bIfContinuousStopRightAway = false

bool	m_bFloatParamsChanged = false

bool	m_bColorParamsChanged = false

ezHybridArray< ezParticleEffectFloatParam, 2 >	m_FloatParams

ezHybridArray< ezParticleEffectColorParam, 2 >	m_ColorParams

Protected Attributes inherited from ezComponent
const ezRTTI *	m_pMessageDispatchType = nullptr
	Messages will be dispatched to this type. Default is what GetDynamicRTTI() returns, can be redirected if necessary.

Friends
class	ezParticleEventReaction_Effect

Additional Inherited Members
Static Public Member Functions inherited from ezRenderComponent
static ezUInt32	GetUniqueIdForRendering (const ezComponent &component, ezUInt32 uiInnerIndex=0, ezUInt32 uiInnerIndexShift=24)
	Computes a unique ID for the given component, that is usually given to the renderer to distinguish objects.

Static Public Member Functions inherited from ezNoBase
static const ezRTTI *	GetStaticRTTI ()

Detailed Description

Plays a particle effect at the location of the game object.

Member Function Documentation

◆ DeserializeComponent()

void ezParticleComponent::DeserializeComponent ( ezWorldReader & inout_stream )

overridevirtual

Override this to load the current state of the component from the given stream.

The active state will be automatically serialized. The 'initialized' state is not serialized, all components will be initialized after creation, even if they were already in an initialized state when they were serialized.

Reimplemented from ezComponent.

◆ GetLocalBounds()

ezResult ezParticleComponent::GetLocalBounds	(	ezBoundingBoxSphere &	out_bounds,
		bool &	out_bAlwaysVisible,
		ezMsgUpdateLocalBounds &	ref_msg
	)

overridevirtual

Called by ezRenderComponent::OnUpdateLocalBounds().

If EZ_SUCCESS is returned, out_bounds and out_bAlwaysVisible will be integrated into the ezMsgUpdateLocalBounds ref_msg, otherwise the out values are simply ignored.

Implements ezRenderComponent.

◆ OnDeactivated()

void ezParticleComponent::OnDeactivated ( )

overrideprotectedvirtual

This method is called when the component gets deactivated.

Upon destruction, a component that is active first gets deactivated. Therefore OnDeactivated() should be used for typical game code cleanup.

See also: OnActivated(), OnDeactivated(), Initialize(), Deinitialize(), OnSimulationStarted()

Reimplemented from ezRenderComponent.

◆ SerializeComponent()

void ezParticleComponent::SerializeComponent ( ezWorldWriter & inout_stream ) const

overridevirtual

Override this to save the current state of the component to the given stream.

Todo:: store effect state

Reimplemented from ezComponent.

◆ StartEffect()

bool ezParticleComponent::StartEffect ( )

Starts a new particle effect. If one is already running, it will be stopped (but not interrupted) and a new one is started as well.

Returns false, if no valid particle resource is specified.

Member Data Documentation

◆ m_sSharedInstanceName

ezString ezParticleComponent::m_sSharedInstanceName

If set, the component reuses the simulation state of another particle component with the same name.

This can be used to reuse similar effects, for example smoke on chimneys doesn't need to be unique. Each instance renders the effect from its own perspective, but the simulation is only done once. This only makes sense for infinite, ambient effects.

The documentation for this class was generated from the following files:

/home/runner/work/ezEngine/ezEngine/Code/EnginePlugins/ParticlePlugin/Components/ParticleComponent.h
/home/runner/work/ezEngine/ezEngine/Code/EnginePlugins/ParticlePlugin/Components/ParticleComponent.cpp

Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Friends

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ DeserializeComponent()

◆ GetLocalBounds()

◆ OnDeactivated()

◆ SerializeComponent()

◆ StartEffect()

Member Data Documentation

◆ m_sSharedInstanceName