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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 "new GameObject()" 114 results closeClear
menu_bookDocumentation
May 5, 2026

GameObject - s&box Documentation

GameObject A GameObject is the fundamental building block of scenes in s&box. GameObjects have a transform (position, rotation, scale), can have parents and chi…

menu_bookDocumentation
May 4, 2026

Scene.Push(), BatchGroup(), FindInPhysics, and FindAllWithTag — Scene Context Management

Scene.Push() and Scene.BatchGroup(): Scene Context Management Scene.Push() makes a scene the active scene for the duration of a scope. This is required when cre…

menu_bookDocumentation
May 20, 2026

Prefab Instance Overrides: Property, Component, and GameObject Customization

Prefab instance overrides in s&box allow you to customize individual instances of a prefab without affecting the original or other instances. The instance remem…

terminalCode Example
May 11, 2026

UIDecal Component - Render Razor UI as a Decal

A Render Component for s&box that allows you to project Razor UI onto surfaces as a Decal. Great for sticking UI onto rounded walls, curved surfaces, or any geo…

groupsCommunity
May 3, 2026

Performance Best Practices

s&box Performance Best Practices Community guide for writing performant s&box code based on engine behavior and developer recommendations. Object Pooling Avoid …

menu_bookDocumentation
May 4, 2026

Scene.Trace: Raycasting, Shape Sweeps, Tag Filters, SceneTraceResult Fields, and FindInPhysics

Scene.Trace: Raycasting and Shape Sweeps in s&box is the entry point for all physics traces in s&box. It returns a builder that uses a fluent API. Basic Usage F…

codeAPI Reference
May 3, 2026

ToolMode SelectionPoint and Trace Helpers

ToolMode.SelectionPoint and Trace Helpers Helper methods and data structures for toolgun selection and placement. SelectionPoint Struct Trace Methods Placement …

menu_bookDocumentation
May 5, 2026

Prefab instance overrides — customizing instances without breaking the prefab link

Prefab Instance Overrides Prefab instance overrides let you customize individual instances without affecting the original prefab or other instances. The instanc…

codeAPI Reference
May 3, 2026

BaseConstraintToolMode for Constraint Tools

BaseConstraintToolMode Abstract Class Base class for two-stage constraint tools (weld, rope, elastic, etc.) with selection point handling. Class Overview Contro…

terminalCode Example
May 20, 2026

Code Cheat Sheet: Quick Reference for GameObjects, Components, and Transforms

Quick reference for common s&box operations covering debugging, transforms, GameObjects, and Components. Useful when you know what you want to do but not the ex…

terminalCode Example
May 4, 2026

Sandbox: UndoSystem — per-player undo stack with bounded history (128 steps)

UndoSystem — Per-Player Undo Stack The is a that maintains a per-player undo stack. Each entry holds a set of s that get destroyed when the undo is triggered. U…

terminalCode Example
May 3, 2026

NPC Ragdoll Creation with Clothing Preservation

NPC Ragdoll Creation with Clothing Pattern for creating ragdolls from NPCs including clothing preservation and bone merging. Key APIs **** — copies model, mater…

menu_bookDocumentation
May 5, 2026

Beams - s&box Rendering Documentation

Beams Beam effects create animated lines between points - useful for lasers, lightning, energy beams, and trails. BeamEffect Component Create beams using the Be…

menu_bookDocumentation
May 3, 2026

Undo System

Undo System Implement undo/redo functionality in editor tools. Basic Scope Capturing GameObject Changes GameObjectUndoFlags Capturing Creations Capturing Destru…

terminalCode Example
May 10, 2026

Trigger-Based Background Music Crossfade Framework

This pattern replaces area music with a small local-client music framework. Each zone requests a target , while one controller crossfades the currently playing …

codeAPI Reference
May 12, 2026

s&box ISpawner: Spawner interface

ISpawner Interface API Reference ISpawner describes something that can be spawned into the world. Implementations handle their own preview rendering and spawn l…

terminalCode Example
May 12, 2026

UndoSystem: Per-player undo functionality

UndoSystem: Per-Player Undo Functionality This example shows the UndoSystem which provides per-player undo stacks for tracking spawned objects and allowing play…

menu_bookDocumentation
May 3, 2026

Decals in s&box

Decals in s&box Decals are textures projected onto surfaces for bullet holes, graffiti, scorch marks, etc. Decal Component Add to a GameObject: DecalDefinition …

menu_bookDocumentation
May 3, 2026

Prefab Instance Overrides

Prefab Instance Overrides Customize individual prefab instances without affecting the original or other instances. Types of Overrides Visual Indicators Prefab i…

codeAPI Reference
May 3, 2026

LinkedGameObjectBuilder for Finding Connected Objects

LinkedGameObjectBuilder Utility class for building a set of connected GameObjects by traversing physics joints, constraints, and manual links. Class Definition …