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s&box MCP Knowledgebase

Documentation, API references, code examples and community knowledge for s&box development.

library_books 595 entries menu_book 352 Documentation code 133 API Reference terminal 100 Code Example groups 10 Community
Results for "client" in menu_bookDocumentation 91 results closeClear
menu_bookDocumentation
Jun 16, 2026

Building a Networked Radio System with 3D Audio and Sync

Building a functional, interactive, and multiplayer-compatible radio system in s&box requires coordinating networked replication, local 3D audio handles, extern…

menu_bookDocumentation
May 4, 2026

s&box SceneNetworkSystem: Scene Loading and Snapshot Protocol

s&box SceneNetworkSystem: Scene Loading and Snapshot Protocol is the core networking system that manages scene loading, object spawning, and snapshot synchroniz…

menu_bookDocumentation
May 5, 2026

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…

menu_bookDocumentation
May 5, 2026

Ownership - s&box Networking Documentation

Ownership Network ownership determines which client or the host has authority over a networked GameObject. The owner controls synced properties and can send RPC…

menu_bookDocumentation
May 4, 2026

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…

menu_bookDocumentation
May 20, 2026

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. …

menu_bookDocumentation
May 20, 2026

Networked Objects: NetworkSpawn, Interpolation, and Network Modes

Any GameObject can become a networked object by calling on it. It will then be sent to all clients and can have Sync Properties and RPC Messages. Network Mode I…

menu_bookDocumentation
May 20, 2026

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…

menu_bookDocumentation
May 20, 2026

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…

menu_bookDocumentation
May 20, 2026

ISceneStartup: Scene Initialization Events for Host and Client Setup

The event interface in s&box allows Components and GameObjectSystems to listen to scene startup events. These run when pressing play in editor, loading a game, …

menu_bookDocumentation
May 5, 2026

Network Events - s&box Networking Documentation

Network Events Network events allow you to broadcast and listen for events across the network. Unlike RPCs which target specific objects, network events are glo…

menu_bookDocumentation
May 20, 2026

Custom Snapshot Data: INetworkSnapshot for s&box Joining Client Data Transfer

s&box Components can write and read custom data during the network snapshot process by implementing . The snapshot is sent to clients when they join a s&box mul…

menu_bookDocumentation
May 20, 2026

Networked Objects: Spawning, Network Modes, and Interpolation

Any GameObject can become networked by calling . It will then be sent to all clients and can have Sync Properties and RPC Messages. Spawning a Networked Object …

menu_bookDocumentation
May 4, 2026

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…

menu_bookDocumentation
May 4, 2026

ISceneStartup: OnHostPreInitialize, OnHostInitialize, OnClientInitialize — Scene Initialization Hooks

ISceneStartup: Scene Initialization Hooks for GameObjectSystems provides callbacks for scene initialization events. It is intended for implementations, not comp…

menu_bookDocumentation
May 4, 2026

Game Static Class: ActiveScene, ChangeScene, TypeLibrary, Cookies, and Core State Properties

Game Static Class: ActiveScene, ChangeScene, TypeLibrary, and Core State The static class is the primary entry point for global game state in s&box. Core State …

menu_bookDocumentation
May 4, 2026

GameObject.Network Accessor — IsProxy, IsOwner, TakeOwnership, DropOwnership, Refresh, and IGameObjectNetworkEvents

GameObject.Network Accessor — Ownership, Spawning, and Proxy Detection is a that provides all network-related operations for a . It always resolves to the netwo…

menu_bookDocumentation
May 5, 2026

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…

menu_bookDocumentation
May 5, 2026

Testing Multiplayer - s&box Networking Documentation

Testing Multiplayer s&box provides tools for testing multiplayer locally without needing multiple computers or Steam accounts. New Instance Launch a second game…

menu_bookDocumentation
May 4, 2026

SyncFlags.Interpolate: How Networked Property Interpolation Works — Supported Types, InterpolationBuffer, and Delay

SyncFlags.Interpolate: How Networked Property Interpolation Works When is applied to a property, proxy clients receive a smoothed value between network ticks ra…