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…
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…
FileSystem: Mounted, Data, OrganizationData, Cache, and Memory Filesystems
FileSystem: Accessing Game Files in s&box s&box provides several filesystem access points through the static class. Available Filesystems Reading and Writing Fi…
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…
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…
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.…
Network visibility — culling networked objects per client with INetworkVisible
Network Visibility — Culling Networked Objects Per Client Network visibility controls whether a networked object sends updates (Sync Vars, transforms) to a spec…
Clutter System: GPU-Instanced Scattering for Grass, Rocks, and Debris
The s&box Clutter System scatters large amounts of small objects (grass, rocks, debris) with GPU-instanced rendering. It handles placement, streaming, and LOD a…
GameObjectSystem - s&box Scene Documentation
GameObjectSystem GameObjectSystems are global systems that operate on groups of GameObjects. Unlike Components which are attached to single GameObjects, systems…
VirtualGrid
VirtualGrid Efficient virtualized grid component for large lists in UI. When to Use Use when displaying: Large item lists (100s-1000s) Inventories with many slo…
s&box Input System: Down, Pressed, Released, AnalogLook, AnalogMove, Input Contexts, and Suppression
s&box Input System: Actions, Contexts, and How Input State Works The s&box static class provides all player input querying. Actions are defined in the project's…
RPC Attributes: Rpc.Broadcast, Rpc.Host, Rpc.Owner — Targeting, NetFlags, and Rpc.FilterInclude/Exclude
RPC Attributes: Rpc.Broadcast, Rpc.Host, Rpc.Owner — Targeting and Flags s&box RPCs are declared with nested attributes on the static class. The old top-level a…
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 PhysicsBody: Body Types, Adding Shapes, Forces vs Impulses, Move vs Transform
s&box PhysicsBody: Body Types, Shapes, Forces, and Move vs Transform is the s&box physics simulation object. It wraps the native physics engine and can have mul…
Prop Component: Procedural Components, Damage System, Gib Spawning, and DamageInfo Patterns
Prop Component: Procedural Physics, Gibs, Damage, and Network Patterns The component is a high-level s&box component that automatically creates , , and componen…
Sound.Play and SoundHandle: 3D Audio, Volume, Pitch, Occlusion, UI Sounds, and Dedicated Server Behavior
Sound.Play and SoundHandle: Audio Playback in s&box is the static entry point for audio playback. is the returned handle for controlling a playing sound. Playin…
Auth Tokens - s&box Services Documentation
Auth Tokens Auth tokens allow your game to authenticate players with external backends. The token proves the player's identity and can be validated against Face…
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…
ModelRenderer: Body Groups, Material Override, Material Groups, Shadow Modes, and LOD Override
ModelRenderer: Body Groups, Material Override, Shadow Modes, and LOD renders a static (non-skinned) model in the world. It creates a in the . Basic Usage Body G…
Cloud Assets: Using sbox.game Models, Textures, and Sounds in Your Project
s&box provides access to a large selection of cloud assets (textures, models, sounds) from sbox.game without manual downloading or mounting. Cloud Browser Drag …