Base class for sensor components that can be used for AI perception like vision or hearing. More...

#include <SensorComponent.h>

Inheritance diagram for plSensorComponent:

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

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

virtual void	GetObjectsInSensorVolume (plDynamicArray< plGameObject * > &out_objects) const =0

virtual void	DebugDrawSensorShape () const =0

void	SetSpatialCategory (const char *szCategory)

const char *	GetSpatialCategory () const

void	SetUpdateRate (const plEnum< plUpdateRate > &updateRate)

const plEnum< plUpdateRate > &	GetUpdateRate () const

void	SetShowDebugInfo (bool bShow)

bool	GetShowDebugInfo () const

void	SetColor (plColorGammaUB color)

plColorGammaUB	GetColor () const

plArrayPtr< const plGameObjectHandle >	GetLastDetectedObjects () const
	Returns the list of objects that this sensor has detected during its last update.

bool	RunSensorCheck (plPhysicsWorldModuleInterface pPhysicsWorldModule, plDynamicArray< plGameObject > &out_objectsInSensorVolume, plDynamicArray< plGameObjectHandle > &ref_detectedObjects, bool bPostChangeMsg) const
	Updates the sensor state right now.

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

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'.

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

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

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

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

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

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

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

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

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

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

plUInt32	GetUniqueID () const
	Returns the unique id for this component.

void	SetUniqueID (plUInt32 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.

PL_ALWAYS_INLINE bool	SendMessage (plMessage &ref_msg)
	Sends a message to this component.

PL_ALWAYS_INLINE bool	SendMessage (plMessage &ref_msg) const

void	PostMessage (const plMessage &msg, plTime delay=plTime::MakeZero(), plObjectMsgQueueType::Enum queueType=plObjectMsgQueueType::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 plMessage &msg) const
	Returns whether the given Message is handled by this component.

void	SetUserFlag (plUInt8 uiFlagIndex, bool bSet)
	Be careful to check which flags may already be in use by base classes.

bool	GetUserFlag (plUInt8 uiFlagIndex) const
	Retrieves a custom flag. Index must be between 0 and 7.

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

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

Public Member Functions inherited from plReflectedClass
virtual const plRTTI *	GetDynamicRTTI () const

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

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

Public Attributes
bool	m_bTestVisibility = true

plUInt8	m_uiCollisionLayer = 0

plTagSet	m_IncludeTags

plTagSet	m_ExcludeTags

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

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

void	UpdateSpatialCategory ()

void	UpdateScheduling ()

void	UpdateDebugInfo ()

Protected Member Functions inherited from plComponent
	plComponent ()
	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 plWorldModuleTypeId	GetTypeId () const =0

virtual plComponentMode::Enum	GetMode () const =0

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

virtual void	Deinitialize ()
	This method is called before the component is destroyed. A derived type can override this method to do common de-initialization work.

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.

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

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

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

bool	IsInitialized () const

bool	IsInitializing () const

bool	IsSimulationStarted () const

Protected Attributes
plEnum< plUpdateRate >	m_UpdateRate

bool	m_bShowDebugInfo = false

plColorGammaUB	m_Color = plColorScheme::LightUI(plColorScheme::Orange)

plHashedString	m_sSpatialCategory

plSpatialData::Category	m_SpatialCategory = plInvalidSpatialDataCategory

plDynamicArray< plGameObjectHandle >	m_LastDetectedObjects

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

Friends
class	plSensorWorldModule

Additional Inherited Members
Static Public Member Functions inherited from plNoBase
static const plRTTI *	GetStaticRTTI ()

Detailed Description

Base class for sensor components that can be used for AI perception like vision or hearing.

Derived component classes implemented different shapes like sphere cylinder or cone. All sensors do a query with the specified spatial category in the world's spatial system first, therefore it is necessary to have objects with matching spatial category for the sensors to detect them. This can be achieved with components like e.g. plMarkerComponent. Visibility tests via raycasts are done afterwards by default but can be disabled. The components store an array of all their currently detected objects and send an plMsgSensorDetectedObjectsChanged message if this array changes.

Member Function Documentation

◆ DeserializeComponent()

void plSensorComponent::DeserializeComponent ( plWorldReader & 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 plComponent.

Reimplemented in plSensorConeComponent, plSensorCylinderComponent, and plSensorSphereComponent.

◆ OnActivated()

void plSensorComponent::OnActivated ( )

overrideprotectedvirtual

This method is called when the component gets activated.

By default a component is active, but it can be created in an inactive state. In such a case OnActivated() is only called once a component is activated. If a component gets switched between active and inactive at runtime, OnActivated() and OnDeactivated() are called accordingly. In contrast Initialize() and Deinitialize() are only ever called once.

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

Reimplemented from plComponent.

◆ OnDeactivated()

void plSensorComponent::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 plComponent.

◆ RunSensorCheck()

bool plSensorComponent::RunSensorCheck	(	plPhysicsWorldModuleInterface *	pPhysicsWorldModule,
		plDynamicArray< plGameObject * > &	out_objectsInSensorVolume,
		plDynamicArray< plGameObjectHandle > &	ref_detectedObjects,
		bool	bPostChangeMsg ) const

Updates the sensor state right now.

If the update rate isn't set to 'Never', this is periodically done automatically. Otherwise, it has to be called manually to update the state on demand.

Afterwards out_objectsInSensorVolume will contain all objects that were found inside the volume. ref_detectedObjects needs to be provided as a temp array, but will not contain a usable result afterwards, call GetLastDetectedObjects() instead.

If bPostChangeMsg is true, plMsgSensorDetectedObjectsChanged is posted in case there is a change. Physical visibility checks are skipped in case pPhysicsWorldModule is null.

Returns true, if there was a change in detected objects, false if the same objects were detected as last time.

◆ SerializeComponent()

void plSensorComponent::SerializeComponent ( plWorldWriter & inout_stream ) const

overridevirtual

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

Reimplemented from plComponent.

Reimplemented in plSensorConeComponent, plSensorCylinderComponent, and plSensorSphereComponent.

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

Code/Engine/GameEngine/AI/SensorComponent.h
Code/Engine/GameEngine/AI/Implementation/SensorComponent.cpp

Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Friends

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ DeserializeComponent()

◆ OnActivated()

◆ OnDeactivated()

◆ RunSensorCheck()

◆ SerializeComponent()