Plugin Classes

Operating System Simulator is built from layered UObject and Actor classes. This page is the architectural map; use the API Reference for members and the Blueprint Reference for common nodes.

Boot chain

flowchart TB
  subgraph row1[" "]
    direction LR
    DActor["AOperatingSystemDeviceActor"] --> Device["UOperatingSystemBaseDevice"] --> OS["UOperatingSystemUnix / UOperatingSystemNonUnix"]
  end
  subgraph row2[" "]
    direction LR
    BIOS["UOperatingSystemBIOS"] --- HDD["UOperatingSystemHDD"] --- Widget["UOperatingSystemWidget"] --- Prog["UOperatingSystemBaseProgram"]
  end
  Device --> BIOS
  Device --> HDD
  OS --> Widget
  OS --> Prog

Layer	Class	Role
World	AOperatingSystemDeviceActor	Spawns device, handles input
World	AOperatingSystemPortableDeviceActor	Adds battery simulation
Device	UOperatingSystemBaseDevice	Hardware + OS class + device widget
OS	UOperatingSystem	Abstract base — use Unix or Non-Unix subclasses
OS	UOperatingSystemUnix	`/Users/...` paths, root user, apt-style commands
OS	UOperatingSystemNonUnix	`C:\` paths, partitions, disk letters

→ Create device actor tutorial chain

Hardware

Name	Class	Description
Motherboard	UOperatingSystemMBB	Links CPU, RAM, GPU, PSU, HDD
CPU	UOperatingSystemCPU	Socket type, speed (readable from Blueprint)
RAM	UOperatingSystemRAM	Memory size
HDD	UOperatingSystemHDD	Capacity; partitions on Non-Unix
GPU	UOperatingSystemGPU	Placeholder hardware
PSU	UOperatingSystemPSU	Power supply placeholder
BIOS	UOperatingSystemBIOS	Boot firmware object

Bundled hardware Blueprints: OperatingSystemContent/Shared/Blueprints/Hardware/

Filesystem

Name	Class	Description
Directory	UOperatingSystemDirectory	Folders; special tags for Desktop, Music, etc.
Root directory	UOperatingSystemRootDirectory	Unix root
Partition	UOperatingSystemPartition	Non-Unix drive letters
File	UOperatingSystemFile	Abstract file — subclass per extension
Video file	UOperatingSystemVideoFile	Opens video player
Audio file	UOperatingSystemAudioFile	Opens audio player

→ Filesystem operations

Programs

Name	Class	Description
Base program	UOperatingSystemBaseProgram	All desktop apps
Terminal	UOperatingSystemTerminal	CLI shell
Terminal command	UOperatingSystemTerminalCommand	Individual commands
Explorer	UOperatingSystemExplorer	File manager
Store	UOperatingSystemStore	Install optional apps
Settings	UOperatingSystemSettingsData	Modular OS settings
CCTV	UOperatingSystemCCTVProgram	Security camera monitoring app

→ Programs section

CCTV (world + program)

Cameras live in the level; the CCTV program reads their feeds inside the OS desktop.

Name	Class	Description
Camera actor	AOperatingSystemCCTVActor	Scene capture, zoom, render targets
CCTV program	UOperatingSystemCCTVProgram	Layouts, capture method, program API
CCTV data	UOperatingSystemCCTVProgramData	Discovers cameras, runs capture tick
CCTV widget	UOperatingSystemCCTVProgramWidget	UMG monitoring UI base
CCTV subsystem	UOperatingSystemCCTVWorldSubsystem	Registers cameras by group

Bundled Blueprints: OperatingSystemContent/Shared/Blueprints/Programs/CCTV/, …/Actors/CCTV/, …/Widgets/Programs/CCTV/

→ CCTV guides

Widgets

Name	Class	Description
OS shell	UOperatingSystemWidget	Desktop, taskbar, notifications
Device frame	UOperatingSystemDeviceWidget	Monitor / phone bezel
Program UI	UOperatingSystemProgramWidget	App window content
BIOS / BSOD	UOperatingSystemBiosWidget, UOperatingSystemBsodWidget	Boot and crash screens

Communication

Name	Class	Description
Global Messenger	UGlobalMessageSubsystem	World-wide gameplay tags + payload
Device Messenger	FOperatingSystemDeviceMessengerSystem	Per-device event names

→ Messengers

Subsystems and helpers

Class	Role
UOperatingSystemWorldSubsystem	Active devices, user manager
UOperatingSystemGameSubsystem	Game-instance scope hooks
UOperatingSystemStatics	Path helpers, messenger lookup
UOperatingSystemUserManager	Login, users, funds

Class inheritance

flowchart LR
  OS["«abstract» UOperatingSystem"]
  Unix["UOperatingSystemUnix"]
  NonUnix["UOperatingSystemNonUnix"]
  Program["UOperatingSystemBaseProgram"]
  File["UOperatingSystemFile"]

  OS --> Unix
  OS --> NonUnix
  NonUnix --> Program
  Program --> File

Unix vs Non-Unix

Feature	Unix	Non-Unix
Path style	`/Users/Desktop`	`C:\Users\Desktop`
Partitions / drive letters	No	Yes
Root user / `sudo`	Yes	No
Package repos (apt)	Yes	No

Details: Create an operating system