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…
NavMesh Links: Custom Jump and Ladder Traversal for AI Agents
NavMesh Links connect disconnected NavMesh regions (jumps, ladders, teleports). By default agents linearly interpolate between endpoints, but you can implement …
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…
Connection API: Properties, Methods, and Common Multiplayer Patterns
The class represents a network connection (client or server). Used extensively in multiplayer for identifying players, checking permissions, and managing networ…
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…
IGameObjectNetworkEvents: Ownership Change and Control Transfer Events
lets Components on a networked GameObject react to ownership changes. The events are targeted only at the specific GameObject whose ownership is changing. Inter…
PostProcessVolume: Camera-Based Effect Blending with Box, Sphere, and Infinite Modes
The component in s&box applies post-processing effects to cameras inside its volume. Effect components can be on the same GameObject or child GameObjects. Volum…
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 …
File System: Sandboxed Virtual Filesystems for Data Persistence
Standard .NET access is restricted in s&box. Instead, use the provided virtual filesystems that sandbox access to specific game directories. Available File Syst…
Hotloading Pitfalls: Default Values, Types, Delegates, and Optimization
s&box hotloads code changes live when you save or files. Understanding the pitfalls helps avoid subtle bugs during development. How It Works IL Hotload (Fast): …
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…
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…
VirtualGrid: Virtualized Grid Panel for Large Item Collections
is a s&box UI Panel that virtualizes large item collections — only rendering visible cells. If you have thousands of items, it creates only the few on screen an…
Testing Multiplayer: New Instances, Hotloading, and Local Connect
s&box provides built-in tools for testing multiplayer without needing another player. You can spawn additional game instances that join your running session, wi…
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…
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. …
INetworkSnapshot: Custom Binary Data in s&box Network Snapshots
s&box Components can implement to write and read custom binary data during the network snapshot process. When a client joins a server, the snapshot is sent once…
Component Versioning: JsonUpgrader for Scene and Prefab Migration
s&box component versioning uses attributes and the property to migrate serialized scene/prefab data when you make breaking changes to component properties. This…
Localization: Multi-Language Token System for UI Text
s&box supports localization via JSON token files. Any displayed string beginning with is treated as a localization token and automatically replaced with the use…
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 …