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.…
BaseCarryable.IEvent interface
BaseCarryable.IEvent Interface Scene event interface for world model lifecycle events on s&box carryable items. Methods OnCreateWorldModel Called when the world…
Component Events - s&box Scene Documentation
Component Events Components can broadcast and listen for events. This provides a decoupled way for components to communicate without direct references. Event In…
s&box LineRenderer and TrailRenderer: Points, Spline Interpolation, Face Modes, Texture Scrolling, and DepthFeather
s&box LineRenderer and TrailRenderer: Procedural Line Rendering renders a line through a list of points with configurable width, color, and spline interpolation…
Editor Tools
Editor Tools Create custom tools for the s&box editor. Creating a Tool Scene Access Gizmo Drawing Preventing Selection Overlay UI Editor Project Setup Tools mus…
Sync Properties: Networked State with Change Detection and Collections
The attribute on a Component property sends its latest value to other players each time it changes. Only the owner of the object can change synced properties. B…
Sandbox: NPC system — Schedule, Task, and Layer architecture
NPC System — Schedule, Task, and Layer Architecture The Sandbox NPC system uses a layered architecture: Layers handle continuous behaviours (navigation, senses,…
Joint Components: HingeJoint Motor Modes, BreakForce, Body Resolution, and Joint Creation Timing
Joint Components: HingeJoint, FixedJoint, and the Joint Base Class s&box provides physics joint components for constraining physics bodies. All joints extend th…
Steam filtering API for user content sanitization
Steam Filtering API in s&box s&box provides Steam filtering APIs to sanitize user-generated content like names and chat messages. This helps prevent profanity, …
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…
ScreenPanel and WorldPanel: AutoScale Strategies, ZIndex, LookAtCamera, and Interaction Range
ScreenPanel and WorldPanel: UI Components in s&box Scenes ScreenPanel is the root component for 2D screen-space UI. It renders attached children to the screen. …
ScenePhysicsSystem: Physics Sub-Stepping at 120Hz, Collision Event Routing, Keyframe Colliders, and Editor Physics
ScenePhysicsSystem: How Physics Steps Work in s&box is the built-in that drives physics simulation. Understanding it explains the physics step order and collisi…
Sandbox: Ownable component — prop protection with IPhysgunEvent and IToolgunEvent
Ownable Component — Prop Protection and Physgun/Toolgun Access Control The component tracks which spawned a . It implements and to enforce ownership checks when…
Storage (UGC)
Manage user-generated content, save games, and player creations. Creating Entries Entry Properties Reading Files Listing Entries Deleting Entries Steam Workshop…
RealTime vs Time: Wall-Clock vs Scene Time — RealTimeSince, RealTimeUntil, GlobalNow, and SmoothDelta
RealTime vs Time: Wall-Clock vs Scene Time — When to Use Each s&box has two time systems. Choosing the wrong one is a common source of bugs. Time (Scene Time) ,…
s&box PhysicalProperties: Physical property persistence
PhysicalProperties Component API Reference PhysicalProperties is a Component that persists physical properties (mass, gravity, health) across duplication and ne…
EnvmapProbe — local reflection captures with Static, Dynamic, and OnDemand modes
EnvmapProbe — Reflection Captures in s&box is a built-in s&box component that captures a cubemap at its world position for local specular reflections. The engin…
Sandbox.Log
Sandbox.Log Static logging class for console output. Overview Log messages appear in the editor console, in-game console (press ), and log files. Logging Method…
ControlSystem: Vehicle seat control with IPlayerControllable
ControlSystem: Vehicle Seat Control with IPlayerControllable This example shows the ControlSystem which manages vehicle seat control, sorting seats by occupatio…
s&box AmmoResource: Shared ammo type GameResource
AmmoResource GameResource API Reference AmmoResource is a GameResource that defines a type of ammo that can be shared across weapons. Weapons that reference the…