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…
MainThread.Queue: Running Code on the Main Thread from Worker Threads
MainThread.Queue: Running Code on the Main Thread from Worker Threads s&box is single-threaded for game logic. If you have code running on a worker thread (e.g.…
ActionGraph — visual scripting with action nodes, delegates, and C# integration
ActionGraph — Visual Scripting ActionGraph is s&box's visual scripting system. Nodes represent actions or expressions, and links carry values or signals between…
IHotloadManaged: Preserving and Restoring State Across s&box Hotloads
IHotloadManaged: Preserving State Across s&box Hotloads When a class is hotloaded in s&box, all live instances are replaced with new instances of the updated ty…
Scene Tick Order: Full Frame Pipeline — FixedUpdate, Update, PreRender, ProcessDeletes, and Stage Hooks
Scene Tick Order: The Full Frame Pipeline Understanding the exact order of operations in a scene tick is critical for writing correct game logic. Game Tick Orde…
Particle Effects: CPU-Simulated Programmable Particle System
The s&box particle system is CPU-simulated (multithreaded) and fully programmable via components. You can emit particles manually, iterate and modify them at ru…
CodeGenerator: Compile-Time Method and Property Wrapping via Attributes
The attribute in s&box lets you create custom attributes that wrap methods and properties at compile time. This is the mechanism behind properties and — you can…
Dedicated Servers: Running Local Projects with Hidden Serverside Code
s&box dedicated servers can run entirely local projects as the game using the command line argument: Assets are still fetched from the cloud version of the game…
Binary Serialization: BlobData for Large GameResource Data Storage
When JSON files grow too large in s&box, you can store data as a binary blob using the class. This works with GameResource assets and provides custom serializat…
Dedicated Server User Permissions: Claims-Based Access Control via Steam ID
On s&box Dedicated Servers, you can specify admin permissions per user via the file using Steam IDs and claims. Configuration Claims Claims are strings describi…
NavMesh Agent: AI Pathfinding Component with Crowd Control
The s&box NavMeshAgent component moves GameObjects along the NavMesh automatically with built-in crowd control to avoid collisions between agents. Component Set…
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…
Component Lifecycle Methods Reference
Component Lifecycle Methods s&box Components have a well-defined lifecycle with specific methods you can override for different phases of initialization and upd…
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…
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…
ActionGraph - s&box Documentation
Official s&box documentation for the ActionGraph system - visual scripting. ActionGraph provides node-based visual scripting for gameplay logic. Getting Started…
Network Helper
Network Helper Pre-built component for common multiplayer scenarios. What It Does NetworkHelper handles typical multiplayer setup: Auto-creates server if enable…
Mapping in s&box
Mapping in s&box s&box includes Hammer, the Source 2 level editor, for creating maps. Opening Hammer Main Menu → Tools → Hammer Or click Hammer icon in toolbar …
NavMesh Agent - s&box Gameplay Documentation
NavMesh Agent The NavMeshAgent component provides automatic navigation along the NavMesh. It handles pathfinding, obstacle avoidance, and smooth movement to tar…