IGameObjectNetworkEvents: StartControl, StopControl, and NetworkOwnerChanged Callbacks
IGameObjectNetworkEvents: Ownership Change Callbacks Implement on a component to receive callbacks when network ownership of the parent changes. Interface Metho…
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…
s&box Cheat Sheet
s&box Cheat Sheet Quick reference for common s&box operations. Debugging Transforms GameObjects Components Input Networking
Explore the Engine - s&box Documentation
Explore the Engine Learn how s&box works by exploring the testbed and understanding the core concepts. Play Testbed Start s&box (not the editor) and find the ga…
s&box CharacterController: Physics-Free Movement Component
s&box CharacterController: Physics-Free Movement Component provides collision-constrained movement without a . It only moves when you explicitly call or . Key P…
s&box Source Generator: IUpdateSubscriber, WrappedPropertySet, and How [Sync]/[Rpc.*] Work at Compile Time
s&box Source Generator: How [CodeGenerator] Works for [Sync] and [Rpc.*] The Roslyn source generator transforms your C# code at compile time. Understanding this…
s&box Hotload System: How Code Reloading Works, SkipHotload, ConVar Persistence, and NetworkObject.OnHotload
s&box Hotload System: How Code Reloading Works s&box supports live code reloading (hotload) without restarting the game. Understanding how it works helps avoid …
Time Utilities: TimeSince, TimeUntil, and Frame-Rate Independence
s&box provides time utilities for cooldowns, countdowns, and frame-rate independent movement without manual bookkeeping. Time.Delta Seconds since last frame. Mu…
WebSocket Connections with Auth Token Authentication in s&box
s&box supports WebSocket connections to external servers for custom networking or persistent data outside the local filesystem. Basic Connection and Messaging U…
Voice Component: Push-to-Talk, Lip Sync Visemes, ExcludeFilter, ShouldHearVoice, and Amplitude
Voice Component: Voice Chat, Lip Sync, and Viseme Morphs The component handles voice chat recording, transmission, and playback with optional lip sync. Basic Se…
s&box ISceneEvent: Scene-Wide and Per-Object Event Broadcasting
s&box ISceneEvent<T>: Scene-Wide and Per-Object Event Broadcasting is the base interface for all scene event systems. It provides static methods for broadcastin…
Sandbox: SaveSystem — scene diff save/load with versioning and ISaveEvents
Sandbox SaveSystem — Scene Diff Save/Load The captures the difference between the current scene state and the original scene file. This means saves are compact …
ISceneStartup: Host and Client Scene Initialization Events
is a scene event interface for listening to scene initialization on host and client. It runs when pressing play in editor, loading a game, or joining a server. …
WebSockets: External Server Communication with Auth Token Support
s&box allows WebSocket connections to interface with external servers. Common uses include custom networking and persistent data storage outside the local files…
Dedicated Servers - s&box Documentation
Official s&box documentation for dedicated server hosting. Dedicated Servers covers running s&box games on headless servers. Running Local Projects explains tes…
Platform Chat: Built-in Text Chat with IChatEvent Filtering
s&box includes a built-in platform chat system for multiplayer games. Messages are routed through the host, validated, filtered via Steam's text filter, and dis…
Testing Multiplayer: Local Multi-Instance Development Workflow
The best way to test multiplayer is having someone join your game, but s&box provides tools for solo testing. Spawning a New Instance Click the network status i…
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…
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…
GameObjectSystem: Auto-Instantiation, Host-Controlled [Sync], RPCs, Stage Hooks, and Configuration Priority
GameObjectSystem: Auto-Instantiation, [Sync] Properties, and RPCs is a scene-level singleton that is automatically instantiated once per scene. Every non-abstra…