Runtime

Support for mobile advertising providers.

Controller for AI pawns and functionality to support behavior trees.

Event-driven analytics reporting. Reports events over networked providers.

ET analytics provider

Maintains a database of engine assets.

Declares message types for the Automation system.

Declares message types for automation workers.

Core engine programming environment. Includes math library, standard container classes and support functionality.

Implements UObject and C++ reflection system.

Defines actors and components, and implements the game framework.

Declares message types for the engine framework.

Encapsulation of engine setting objects.

Gameplay debugging utilities.

Management of hierarchical tables of text-based tags. Allows management of bulk gameplay data.

Interface for HMD devices.

HTTP request/response parsing interface.

Storage and format conversion routines for image data.

Wrappers around various image file formats.

Key definitions and related code

Interface for external controller implementations.

JSON conversion routines for UObject types.

Entry point for the engine

Generalized messaging system. Allows passing strongly typed messages between endpoints using arbitrary transport protocols.

Platform and format-agnostic movie player

Functionality to support the navigation mesh.

Cook-on-the-fly network filesystem.

Cook-on-the-fly network filesystem.

Platform networking support.

Placeholder RHI implementation for systems that do not need to render.

OpenGL RHI implementation.

Reads from a monolithic PAK file in a packaged build.

Functionality for manipulating .uproject and .uplugin files

Raw mesh data used to construct optimized runtime rendering streams.

Core data structures and utilities shared by modules that perform rendering.

Manages and renders scenes, the renderable information associated with each world. Includes the definition of all drawing policies and shaders.

Interface for rendering APIs.

Redirects reads and writes through a user-specified sandbox directory.

Message objects used to communicate with running engine sessions.

Service interfaces used by the session management modules.

Unreal's declarative UI framework. Used to build the Unreal Editor, and for in-game UI.

Core declarations and types for Slate

Default Slate rendering implementation which uses the default RHI API.

Platform-abstracted socket implementation.

Cook-on-the-fly network filesystem.

Module for handling rendering during blocking loads.

Benchmarking routines used to assess system performance.

Unreal Motion Graphics. Unreal's data-driven UI framework built on top of Slate. Work in progress.

Vector virtual machine. Experimental, intended for use in future features.

Voice capture interface

Simple XML parser.