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…
Mapping - s&box Editor Documentation
Mapping s&box includes Hammer, the Source 2 level editor, for creating maps and environments. Build worlds with brushes, props, lighting, and gameplay entities.…
NavMesh Areas — blocking and cost-modifying regions for AI pathfinding
NavMesh Areas components modify NavMesh generation and agent pathfinding costs within a defined region. Use them to create no-go zones, water areas, or danger z…
Beams - s&box Rendering Documentation
Beams Beam effects create animated lines between points - useful for lasers, lightning, energy beams, and trails. BeamEffect Component Create beams using the Be…
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…
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…
Graphics.Draw, Blit, DrawText, DrawIcon, and GrabFrameTexture — Custom Rendering APIs
Graphics.Draw and Graphics.Blit: Custom Rendering in s&box provides low-level rendering APIs for drawing custom geometry, screen-space quads, and text. All call…
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…
s&box WeaponConVars: Global weapon settings
WeaponConVars Static Class WeaponConVars is a static class that defines console variables controlling global weapon behavior in s&box. These ConVars can be set …
Custom Snapshot Data - s&box Networking Documentation
Custom Snapshot Data For advanced networking, you can write and read custom data in network snapshots. This allows efficient synchronization of complex game sta…
s&box NpcConVars: Global NPC AI settings
NpcConVars Static Class NpcConVars is a static class that defines console variables controlling global NPC AI behavior in s&box. These ConVars can be set via co…
Styling Panels - s&box UI Documentation
Styling Panels Style your UI panels using SCSS-like stylesheets or direct code styling. Using Stylesheets Create files alongside your files: Or specify a differ…
Inspector property attributes — Range, Group, ShowIf, Title, Feature, and more
Inspector Property Attributes Attributes control how component properties appear in the s&box editor inspector. Apply them alongside on your component fields to…
Engine Frame Loop Order: FrameStart, Scene Tick, and FrameEnd Sequence
Engine Frame Loop Order The s&box engine frame loop runs in a specific order each frame. Understanding this is important for knowing when your code runs relativ…
NetworkHelper — quick multiplayer setup with auto-server and player spawning
NetworkHelper — Quick Multiplayer Setup is a built-in s&box component that handles the boilerplate of starting a server and spawning players. It's the fastest w…
Networking State in s&box: IsHost, IsClient, IsActive, and Lobby Management
Networking State in s&box: IsHost, IsClient, IsActive Understanding the networking state is critical for writing correct multiplayer code in s&box. Key Properti…
ISceneLoadingEvents: Async Scene Load Hooks with BeforeLoad, OnLoad, and AfterLoad
ISceneLoadingEvents: Async Scene Load Hooks Implement on a to hook into the scene loading pipeline. The game waits for async tasks to complete before proceeding…
ConVar and ConCmd: Console Variables and Commands in s&box
ConVar and ConCmd: Console Variables and Commands s&box uses and attributes on static properties and methods to expose them to the console system. ConVar (Conso…
Download & Install - s&box Documentation
Download & Install Install Purchase s&box on Steam Install it via your Steam Library Launch s&box Launch After launching s&box, you will be presented with a men…