RPC Messages: Remote Procedure Calls with Broadcast, Owner, and Host Targets
Components can contain RPCs (Remote Procedure Calls). An RPC is a function that when called, is also called remotely on other clients. Broadcast RPC makes a fun…
Building a Networked Radio System with 3D Audio and Sync
Building a functional, interactive, and multiplayer-compatible radio system in s&box requires coordinating networked replication, local 3D audio handles, extern…
s&box PackageSortMode: Package sorting modes
PackageSortMode Enum PackageSortMode is a typed enum for package sorting modes in the s&box package browser. It provides a type-safe way to specify how packages…
HTTP Requests - s&box Networking Documentation
HTTP Requests s&box provides an HTTP client for making web requests to external APIs. This is useful for fetching data, submitting scores to custom backends, or…
[Change] Attribute: Callbacks When Properties Change — Works with [Sync] and [ConVar], Priority, and All-Client Firing
[Change] Attribute: Callbacks When Properties Change The attribute invokes a method whenever a property's value changes. It works with any property but is espec…
Platform Chat - Built-in Multiplayer Text Chat System
Built-in text chat for multiplayer games. Messages are routed through the host, validated, filtered, and displayed via the standard overlay UI - no game code re…
Sandbox: PlayerInventory — weapon slots, pickup, drop, and loadout persistence
Sandbox PlayerInventory — Weapon Slots, Pickup, Drop, and Loadout Persistence manages up to 6 weapon slots, handles pickup/drop logic, and delegates loadout sav…
Inspector Attributes: Group, Title, Icon, Range, InfoBox, Feature, and More
Inspector Attributes: Controlling How Properties Appear in the Editor s&box provides a rich set of attributes to control how component properties appear in the …
Animation - s&box Documentation
Animation s&box supports skeletal animation for characters and objects. Animate models using imported animations, blend between states, and control playback fro…
Component Events - s&box Scene Documentation
Component Events Components can broadcast and listen for events. This provides a decoupled way for components to communicate without direct references. Event In…
Localization: Multi-Language Token System for UI Text
s&box supports localization via JSON token files. Any displayed string beginning with is treated as a localization token and automatically replaced with the use…
Custom GameResource Assets: Define, Create, and Access Custom Asset Types
Define custom asset types as subclasses. They get a nice inspector window, are hotloaded in-game, and are stored as JSON files with a custom extension. Creating…
Auth Tokens: Steam Identity Validation for External Services
Auth Tokens validate that HTTP or WebSocket requests originate from a legitimate Steam user in an active s&box game session. Use them to tie data to Steam accou…
WebSockets - s&box Networking Documentation
WebSockets s&box supports WebSocket connections for real-time communication with external servers. Use for custom networking, persistent data, or integrating wi…
Sync Properties: Networked State with Change Detection and Collections
The attribute on a Component property sends its latest value to other players each time it changes. Only the owner of the object can change synced properties. B…
NetList and NetDictionary: Delta Sync, OnChanged Callbacks, Write Guard, and CanWriteChanges
NetList and NetDictionary: Networked Collections with Delta Sync and are s&box networked collection types for use with . They only send changes (deltas) over th…
RPC Messages: Broadcast, Owner, Host with Filtering and Caller Info
Components can contain RPCs — functions that when called locally, are also called remotely. Supported RPC argument types are the same as Sync properties. Basic …
Application Context Flags: IsDedicatedServer, IsHeadless, IsEditor, IsVR — Runtime Context in s&box
Application Context Flags: IsDedicatedServer, IsHeadless, IsEditor, IsVR is a static class in s&box that exposes runtime context flags. These are set at startup…
s&box SpriteRenderer: Billboard Modes, Animation Control, Broadcast Events, and Rendering Options
s&box SpriteRenderer: Animated Sprites, Billboard Modes, and Broadcast Events renders a asset in the s&box world with support for animation, billboarding, and f…
Custom Editors - s&box Editor Documentation
Custom Editors Custom editors let you create specialized inspector interfaces for your components and assets. Build custom widgets, property drawers, and full i…