Unreal Class Reference

Unreal Classes

Tim Sweeney

Epic MegaGames, Inc.

tim@epicgames.com

http://www.epicgames.com/

Audience: Level Designers, UnrealScript Programmers, C++ Programmers.

About this document

This is a quick attempt to describe the most important classes and variables in Unreal. It is currently very sparse but will be expanded over time.

Engine.Object

Purpose:

Serves as the base class of all objects in Unreal. All objects inherit from Object.

Variables:

• Parent: The object's parent object (for scoping).
• ObjectFlags: The object's flags, described in the Packages document.
• Name: The object's name.
• Class: The object's class.

Functions:

• Log: Writes a message to the log file, usually \Unreal\System\Unreal.log.
• Warn: Writes a script warning to the log file, including the current script and function.
• Localize: Returns a localized (internationally translated) string from a package's .int file.
• GotoState: Sets the object's current state, None means no state. If no label is specified, the Begin label is gone to.
• IsInState: Returns whether this object is in the specified state.
• GetStateName: Returns the name of this object's current stae, None if none.
• Enable: Enables a probe event. The only functions which work with Enable and Disable are: Spawned, Destroyed, GainedChild, LostChild, Trigger, UnTrigger, Timer, HitWall, Falling, Landed, ZoneChange, Touch, UnTouch, Bump, BeginState, EndState, BaseChange, Attach, Detach, ActorEntered, ActorLeaving, KillCredit, AnimEnd, EndedRotation, InterpolateEnd, EncroachingOn, EncroachedBy, FootZoneChange, HeadZoneChange, PainTimer, SpeechTimer, MayFall, Die, Tick, PlayerTick, Expired, SeePlayer, EnemyNotVisible, HearNoise, UpdateEyeHeight, SeeMonster, SeeFriend, SpecialHandling, BotDesireability.
• Disable: Disables a probe event.
• GetPropertyText: Converts the value of an arbirary variable to text.
• SetPropertyText: Sets the value of an arbitrary variable from text.
• SaveConfig: Saves the current values of all "config" variables to the Unreal.ini file.
• ResetConfig: Resets the values of the "config" variables to the originals in the Default.ini file.

Static Functions:

• ClassIsChildOf: Returns whether one class is a subclass of another class.
• GetEnum: Returns the nth element of an enumeration.
• DynamicLoadObject: Tries to load an object from a file, and returns it.

Events:

• BeginState: Called when a new state is entered.
• EndState: Called when the current state is ended.