UBTService Class Reference

Behavior Tree service nodes is designed to perform "background" tasks that update AI's knowledge. More...

Public Member Functions
Functions
void	SetbRestartTimerOnEachActivation (bool Value)
	if set, next tick time will be always reset to service's interval when node is activated
void	SetbCallTickOnSearchStart (bool Value)
	call Tick event when task search enters this node (SearchStart will be called as well)
Public Member Functions inherited from UObject
bool	MarkPackageDirty () const
void	RemoveFromRoot ()
bool	GetIsRooted () const
bool	IsTransient () const
bool	Modify (bool bAlwaysMarkDirty=true)
void	SetTransactional (bool bTransactional)
bool	IsSupportedForNetworking () const
UClass	GetClass () const
UObject	GetOuter () const
UObject	GetTypedOuter (TSubclassOf< UObject > Target) const
	Traverses the outer chain searching for the next object of a certain type.
UPackage	GetOutermost () const
UPackage	GetPackage () const
void	AddToRoot ()
UWorld	GetWorld () const
FName	GetName () const
FString	GetFullName (const UObject StopOuter=nullptr) const
FString	GetPathName (const UObject StopOuter=nullptr) const
bool	IsA (const UClass Class) const
	Returns true if this object is of the specified type, or a child of that type.
void	SaveConfig ()
void	LoadConfig ()
void	ReloadConfig ()
void	CopyScriptPropertiesFrom (const UObject OtherObject)
void	opCast (?&Address) const
FString	ToString () const

Static Public Member Functions
Static Functions
static UClass	StaticClass ()
Static Public Member Functions inherited from UBTAuxiliaryNode
static UClass	StaticClass ()
Static Public Member Functions inherited from UBTNode
static UClass	StaticClass ()
Static Public Member Functions inherited from UObject
static UClass	StaticClass ()

Public Attributes
Service
float32	RandomDeviation
	adds random range to service's Interval
float32	Interval
	defines time span between subsequent ticks of the service
Public Attributes inherited from UBTNode
FString	NodeName
	node name
Public Attributes inherited from UObject
const UClass	Class
const UObject	Outer
const UPackage	Outermost
const UPackage	Package
const UWorld	World
const FName	Name
const bool	IsRooted

Detailed Description

Behavior Tree service nodes is designed to perform "background" tasks that update AI's knowledge.

Services are being executed when underlying branch of behavior tree becomes active, but unlike tasks they don't return any results and can't directly affect execution flow.

Usually they perform periodical checks (see TickNode) and often store results in blackboard. If any decorator node below requires results of check beforehand, use OnSearchStart function. Keep in mind that any checks performed there have to be instantaneous!

Other typical use case is creating a marker when specific branch is being executed (see OnBecomeRelevant, OnCeaseRelevant), by setting a flag in blackboard.

Because some of them can be instanced for specific AI, following virtual functions are not marked as const:

• OnBecomeRelevant (from UBTAuxiliaryNode)
• OnCeaseRelevant (from UBTAuxiliaryNode)
• TickNode (from UBTAuxiliaryNode)
• OnSearchStart

If your node is not being instanced (default behavior), DO NOT change any properties of object within those functions! Template nodes are shared across all behavior tree components using the same tree asset and must store their runtime properties in provided NodeMemory block (allocation size determined by GetInstanceMemorySize() )

Member Function Documentation

SetbCallTickOnSearchStart()

void SetbCallTickOnSearchStart

(

bool

Value

)

call Tick event when task search enters this node (SearchStart will be called as well)

SetbRestartTimerOnEachActivation()

void SetbRestartTimerOnEachActivation

(

bool

Value

)

if set, next tick time will be always reset to service's interval when node is activated

StaticClass()

UClass StaticClass ( )

static

Member Data Documentation

Interval

float32 Interval

defines time span between subsequent ticks of the service

RandomDeviation

float32 RandomDeviation

adds random range to service's Interval