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 "OnStart()" 46 results closeClear
menu_bookDocumentation
May 5, 2026

Component execution order — OnAwake, OnStart, OnUpdate, OnFixedUpdate, and OnLateUpdate

Component Execution Order s&box calls component lifecycle methods in a defined order each frame. Understanding this order is essential for avoiding race conditi…

menu_bookDocumentation
May 4, 2026

Component Lifecycle: Full Callback Order — OnAwake, OnEnabled, OnStart, OnUpdate, OnFixedUpdate, OnDisabled, OnDestroy

Component Lifecycle: Full Callback Order s&box components have a well-defined lifecycle. Understanding the exact order prevents subtle bugs. Callback Order Key …

menu_bookDocumentation
May 4, 2026

Scene Tick Order: Full Frame Pipeline — FixedUpdate, Update, PreRender, ProcessDeletes, and Stage Hooks

Scene Tick Order: The Full Frame Pipeline Understanding the exact order of operations in a scene tick is critical for writing correct game logic. Game Tick Orde…

codeAPI Reference
May 12, 2026

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…

codeAPI Reference
May 12, 2026

s&box ScheduleBase: NPC schedule base class

Abstract base class for NPC schedules. A schedule executes a sequence of tasks with cancellation support. Properties Methods Behavior Executes tasks sequentiall…

codeAPI Reference
May 12, 2026

s&box MountMetadata: Mount fallback rendering

MountMetadata Component API Reference MountMetadata is attached to mount-spawned props to show a graceful bounding box and hint the player which game it's from …

menu_bookDocumentation
May 20, 2026

Component Methods: OnLoad, OnAwake, OnStart, OnUpdate, OnFixedUpdate Lifecycle

Component lifecycle methods you can override: OnLoad (async) Called after deserialization for loading. Loading screen stays open until all OnLoad tasks complete…

menu_bookDocumentation
May 5, 2026

Execution Order - s&box Documentation

Execution Order Understanding the order in which component methods are called. Flowchart Component lifecycle follows a specific order: Constructor — Object crea…

terminalCode Example
May 18, 2026

Randomized Clothing for NPC Citizens using Dresser.Randomize() on Prefabs

Overview This demonstrates how to create NPC citizen prefabs with randomized clothing using the built-in component. Each time the prefab spawns or is enabled, i…

terminalCode Example
May 10, 2026

Extensible Player Data Save Hooks for World Components

This pattern lets gameplay components plug into a player's save/load flow without putting every feature directly inside one large class. The framework has three…

codeAPI Reference
May 12, 2026

s&box MorphState: Morph value persistence

MorphState Component API Reference MorphState persists morph values on a GameObject so they survive over the network and duplication. Type Signature Properties …

menu_bookDocumentation
May 4, 2026

s&box Component Lifecycle: Exact Execution Order and Internal Guards

s&box Component Lifecycle: Exact Execution Order and Internal Guards Derived directly from and in the s&box engine source. Execution Order **** — Called once wh…

terminalCode Example
May 5, 2026

RadiusDamage — explosion area damage with IDamageable, occlusion, and physics force

RadiusDamage Component is a built-in s&box component that applies damage to all objects within a sphere. It integrates with the system and can apply outward phy…

groupsCommunity
May 5, 2026

Common s&box component gotchas — physics, networking, scene, and rendering pitfalls

Common s&box Component Gotchas Practical pitfalls that catch most new s&box developers. Physics Rigidbody + CharacterController on the same GO — don't do it. Th…

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 …

groupsCommunity
May 3, 2026

Common Pitfalls and How to Avoid Them

s&box Common Pitfalls and How to Avoid Them Community-compiled list of frequently encountered issues and their solutions, based on Discord support channels and …

terminalCode Example
May 5, 2026

BeamEffect — laser and energy beams between two points

BeamEffect — Laser and Energy Beams renders a beam between two points in the world. Use it for lasers, electricity, tractor beams, or any line-based visual effe…

terminalCode Example
May 4, 2026

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,…

codeAPI Reference
May 12, 2026

s&box ICookieSource: Cookie persistence interface

ICookieSource API Reference ICookieSource is an interface for components that want to save their properties as cookies (persistent user preferences stored in Ga…

terminalCode Example
May 4, 2026

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…