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…
s&box EaseType: Animation easing functions
EaseType Enum Documentation EaseType is an enum that defines easing functions for animated hydraulic movement. It is used by HydraulicEntity to control how the …
Networked Objects: Spawning, Network Modes, and Interpolation
Any GameObject can become networked by calling . It will then be sent to all clients and can have Sync Properties and RPC Messages. Spawning a Networked Object …
Scene Tracing: Raycasts, Sphere Traces, and Box Traces
Scenes can be traced against using with a builder pattern. At minimum, traces need a shape, start, and end. You can filter by tags or use your project's collisi…
ComponentFlags: Hidden, NotSaved, NotNetworked, NotCloned — Controlling Component Behavior
ComponentFlags: Controlling Component Serialization, Networking, and Visibility is a flags enum on that controls how a component behaves in the editor, serializ…
ISceneStartup: Scene Initialization Events for Host and Client Setup
The event interface in s&box allows Components and GameObjectSystems to listen to scene startup events. These run when pressing play in editor, loading a game, …
Dedicated Servers: Installation, Configuration, and Command Line
s&box dedicated servers run headless and can be installed via SteamCMD. They host multiplayer games without requiring the full editor. Installation Install via …
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. …
Cloud Assets: Referencing and Runtime Mounting from sbox.game
s&box provides access to a large library of cloud assets (models, textures, sounds) hosted on sbox.game. Assets are downloaded and cached automatically — no man…
Movie Maker - s&box Documentation
Official s&box documentation for the Movie Maker - cinematic recording and editing. Movie Maker provides tools for creating cinematic sequences and gameplay rec…
Prefabs - s&box Documentation
Prefabs Prefabs are reusable GameObject templates that allow you to create consistent, repeatable objects across your game. You create a prefab asset from a Gam…
Unit Tests: MSTest with Engine Initialization for Component Testing
s&box supports unit testing via a directory in your project. The engine auto-generates a test project when this directory exists (restart editor after creating …
Particle Effect - s&box Documentation
Official s&box documentation for Particle Effects - visual effects system. Particle Effect creates visual effects using GPU-accelerated particles. The system su…
Libraries: Reusable Code Packages with Source Sharing
s&box Libraries are self-contained code and asset packages stored in your project's folder. They enable code reuse across multiple projects and can be shared wi…
Component Methods: OnLoad, OnAwake, OnStart, OnUpdate, OnFixedUpdate Lifecycle
Component lifecycle methods you can override: OnLoad (async) Called after deserialization for loading. Loading screen stays open until all OnLoad tasks complete…
Indirect Light Volumes: Probe-Based Global Illumination and Bounce Lighting
Indirect Light Volumes in s&box use a grid of probes to sample indirect light from all directions. When rendering, the system interpolates between nearby probes…
Sandbox: BanSystem — persistent ban list with INetworkListener.AcceptConnection
Sandbox BanSystem — Persistent Ban List with INetworkListener is a that implements to intercept incoming connections and reject banned players before they join.…
Reporting Errors - s&box Documentation
Reporting Errors How to report bugs and issues with s&box. Issue Tracker Report bugs on the s&box issue tracker: Search existing issues first Create a new issue…
Terrain System — heightmap creation, material painting, and sculpting
Terrain System s&box terrain is a heightmap-based landscape system with material painting, sculpting tools, and built-in LOD. Terrain data is stored in a reusab…
VR Development: Tracked Objects, Controllers, and Hand Input
s&box supports VR development with built-in components for headset tracking, controller input, and hand animation. Enabling VR Editor: Launch with headset conne…