NetList and NetDictionary: Delta Sync, OnChanged Callbacks, Write Guard, and CanWriteChanges
NetList and NetDictionary: Networked Collections with Delta Sync and are s&box networked collection types for use with . They only send changes (deltas) over th…
Collision and Triggers
Working with physics collisions and trigger volumes. Collision Components Basic Collision Trigger Volumes Triggers detect overlap without blocking movement: Col…
Input System: Button Queries, AnalogMove, AnalogLook, and Escape Override
Input is accessed using the class in s&box. It provides button state queries, analog stick/mouse values, and escape key handling for game components. Button Que…
Network Visibility Culling: AlwaysTransmit, INetworkVisible, CullDelay, and PVS-Based Object Culling
Network Visibility Culling: How s&box Decides What to Send to Each Client s&box has a built-in network visibility culling system that avoids sending updates for…
Network Helper
Network Helper Pre-built component for common multiplayer scenarios. What It Does NetworkHelper handles typical multiplayer setup: Auto-creates server if enable…
Physics Triggers: Enter, Exit Events and Polling in s&box
A trigger is a collider that detects when physics objects enter or exit it without blocking movement. Useful for pickup zones, death planes, checkpoints, and ar…
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…
Razor Panels: HTML/CSS UI with C# in s&box
s&box UI can be created using Razor syntax — web-like HTML/CSS combined with C#. Panels are not rendered via a HTML renderer; the syntax is a convenience layer …
Physics Events - s&box Physics Documentation
Physics Events Receive callbacks for physics events in the scene. IScenePhysicsEvents Implement this interface on a component to receive scene-wide physics even…
Physics joints — Fixed, Ball, Hinge, Slider, Spring, and Wheel
Physics Joints Joints connect two physics bodies together with constraints. All joint types are components added to a GameObject positioned at the joint's ancho…
s&box TriggerTeleport: Trigger-based teleportation
TriggerTeleport Component API Reference TriggerTeleport is a Component that teleports objects that enter its trigger collider to a target GameObject. Type Signa…
Network Events: INetworkListener and INetworkSpawn Interfaces
React to players joining and leaving by implementing or on a component in the scene. INetworkListener Example Spawn a player object when someone joins: INetwork…
s&box SelfCollisionSound: Single-surface collision sounds
SelfCollisionSound Component API Reference SelfCollisionSound is a Component that plays collision sounds only from this object's surface, preventing duplicate s…
Code Basics - s&box Documentation
Code Basics C# is the primary programming language for s&box. The engine uses modern .NET with hotloading support, allowing you to see code changes instantly wi…
s&box WaterVolume: Water buoyancy
WaterVolume Component API Reference WaterVolume is a Component that applies buoyancy physics to rigidbodies entering a water volume. Implements ITriggerListener…
s&box IKillIcon: Kill feed icon interface
IKillIcon API Reference IKillIcon is an interface for components that can display a kill icon in the kill feed or other UI elements. Type Signature Property - T…
Particle Effects System
Particle Effects System CPU-simulated, fully controllable particle system for effects like fire, smoke, sparks, and explosions. Architecture The particle system…
WorldPanel and ScreenPanel — HUD overlays and 3D world-space UI with Razor PanelComponent
WorldPanel and ScreenPanel — UI in the World s&box UI uses (Razor) attached to either a (HUD overlay) or (3D world-space UI). The same component works with both…
s&box NetworkMode Enum and INetworkListener: Controlling Network Participation
s&box NetworkMode Enum: Controlling How GameObjects Are Networked controls how a participates in the network. Usage NetworkMode.Object The object has an owner (…
Sandbox: ToolMode system — creating custom Tool Gun modes
ToolMode System — Creating Custom Tool Gun Modes is the base class for all Tool Gun tools in Sandbox. Tools are components on the Toolgun and are enabled/disabl…