Behavior Function Reference

This page lists the built-in functions exposed by UJ2TagBehaviorFunctionLibrary. Pure functions are expressions. Callable functions are actions. Custom behavior functions are documented in Behavior Public API.

Expressions: Object

Function	Output	Purpose
IsObjectValid	Result bool	Returns true when the object reference is valid.
IsObjectOfClass	Result bool	Checks whether an object is of a class; can require exact class match.
ObjectEquals	Result bool	Checks whether two object references point to the same object.
ObjectNotEquals	Result bool	Checks whether two object references are different.
GetObjectName	Result string	Returns the internal object name, or empty string for invalid objects.
GetObjectDisplayName	Result string	Returns the Actor label or display-safe object name.
GetObjectClass	Result class	Returns the object’s class, or none for invalid objects.
ObjectIsActor	Result bool	Returns true when the object is an Actor.
ObjectIsComponent	Result bool	Returns true when the object is an Actor Component.
ObjectIsAsset	Result bool	Returns true when the object is an asset.

Expressions: Actor / Component

Function	Output	Purpose
ActorHasComponent	Result bool	Checks whether an Actor has a component of the given class.
GetOwnerActor	Result Actor	Returns the owner Actor for a component.

Expressions: Tags

Function	Output	Purpose
ObjectHasTag	Result bool	Checks exact tag or child tag match on an Actor or Component.
ObjectHasExactTag	Result bool	Checks only exact tag name match.
ObjectHasTagMatchingParent	Result bool	Checks whether any object tag is equal to or below a parent tag.
ObjectHasAnyTag	Result bool	Checks whether the object has at least one comma-separated tag.
ObjectHasAllTags	Result bool	Checks whether the object has every comma-separated tag.
ObjectHasNoneOfTags	Result bool	Checks whether the object has none of the comma-separated tags.
TagEquals	Result bool	Compares two normalized tag names for equality.
TagNotEquals	Result bool	Compares two normalized tag names for inequality.
TagMatchesParent	Result bool	Checks whether a tag equals or is below a parent tag path.
GetTagParent	Result name	Returns the direct parent tag path.
GetParentTags	Result string	Returns all parent tag paths as comma-separated text.
GetTagRoot	Result string	Returns the root segment of a tag path.
GetTagLeafName	Result string	Returns the final segment of a tag path.

Expressions: Boolean Comparison

Function	Output	Purpose
BoolEquals	Result bool	Returns true when both boolean values are equal.
BoolNotEquals	Result bool	Returns true when both boolean values are different.

Expressions: Integer Comparison

Function	Output	Purpose
IntEquals	Result bool	A == B.
IntNotEquals	Result bool	A != B.
IntGreaterThan	Result bool	A > B.
IntGreaterOrEqual	Result bool	A >= B.
IntLessThan	Result bool	A < B.
IntLessOrEqual	Result bool	A <= B.

Expressions: Float Comparison

Function	Output	Purpose
FloatEquals	Result bool	Returns true when two floats are nearly equal within tolerance.
FloatNotEquals	Result bool	Returns true when two floats differ by more than tolerance.
FloatGreaterThan	Result bool	A > B.
FloatGreaterOrEqual	Result bool	A >= B.
FloatLessThan	Result bool	A < B.
FloatLessOrEqual	Result bool	A <= B.

Expressions: String

Function	Output	Purpose
StringEquals	Result bool	Compares strings for equality; optional case-insensitive mode.
StringNotEquals	Result bool	Compares strings for inequality; optional case-insensitive mode.
StringContains	Result bool	Checks whether a string contains a search value.
StringStartsWith	Result bool	Checks whether a string starts with a prefix.
StringEndsWith	Result bool	Checks whether a string ends with a suffix.
StringIsEmpty	Result bool	Checks whether trimmed text is empty.
StringMatchesWildcard	Result bool	Checks a string against a wildcard pattern.

Expressions: Class

Function	Output	Purpose
ClassEquals	Result bool	Checks whether two class references are the same.
ClassNotEquals	Result bool	Checks whether two class references are different.
ClassIsChildOf	Result bool	Checks whether a class inherits from a parent class.

Expressions: Event

Function	Output	Purpose
IsEventType	Result bool	Checks whether the active behavior was triggered by the selected event type.

Actions: Debug / Logging

Function	Output	Purpose
PrintDebugMessage	Result bool	Logs a debug message and prints on-screen debug output.
LogMessage	Result bool	Writes a behavior log message with Info, Warning, or Error severity.

Actions: Custom Issues

Function	Output	Purpose
CreateIssueMessage	Result bool	Creates a structured behavior issue message; can suppress duplicates with OnlyOnce.
ClearIssueMessages	Result int	Clears remembered issue messages and returns the number removed.

Actions: Tags

Function	Output	Purpose
AddTagToObject	Result bool	Adds a tag to an Actor or Actor Component.
RemoveTagFromObject	Result bool	Removes an exact tag from an Actor or Actor Component.
ClearTagsFromObject	Result int	Clears all tags from an Actor or Actor Component and returns removed count.
ReplaceTagOnObject	Result bool	Replaces an exact old tag with a new tag.
AddTagsToObject	Result int	Adds comma-separated tags and returns added count.
RemoveTagsFromObject	Result int	Removes comma-separated tags and returns removed count.

Actions: Components

Function	Output	Purpose
AddComponentToActor	Result bool	Adds a component of the requested class to an Actor; can skip if one already exists.
RemoveComponentFromActor	Result bool	Removes the first matching component from an Actor.

Actions: Behavior / Flow

Function	Output	Purpose
ExecuteBehavior	Result bool	Executes a referenced behavior asset or section with an optional target object context.
StopBehavior	Result bool	Requests that the current behavior stop after this action.

Notes for Custom Libraries

Custom functions follow the same split:

• pure functions become expression functions
• non-pure callable functions become action functions
• supported parameter and output types are listed in Input and Output Types