Prefabs - s&box Documentation
Prefabs Prefabs are reusable GameObject templates that allow you to create consistent, repeatable objects across your game. You create a prefab asset from a Gam…
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…
ActionGraph - s&box Documentation
Official s&box documentation for the ActionGraph system - visual scripting. ActionGraph provides node-based visual scripting for gameplay logic. Getting Started…
Shaders in s&box - HLSL and Shading Models
Shaders in s&box - HLSL and Shading Models Write custom shaders in HLSL with Source 2's shading models, render states, and GPU instancing support. Shader Develo…
Sandbox.GameResource
Sandbox.GameResource Base class for custom asset types. Overview GameResource is the base class for creating custom asset types that appear in the editor with f…
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…
Sandbox: CleanupSystem — full scene cleanup and per-player cleanup with Ownable
Sandbox CleanupSystem — Scene Cleanup and Per-Player Cleanup is a that handles cleaning up spawned objects. It distinguishes between "baseline" objects (part of…
Clutter System — scattering grass, rocks, and debris with GPU instancing
Clutter System — Scattering Grass, Rocks, and Debris The Clutter System scatters large amounts of small objects (grass, rocks, debris) across a scene using GPU-…
Terrain System — heightmap creation, material painting, and sculpting
Terrain System s&box terrain is a heightmap-based landscape system with material painting, sculpting tools, and built-in LOD. Terrain data is stored in a reusab…
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…
ConVar and ConCmd — console variables and commands with flags and game settings
ConVar and ConCmd — Console Variables and Commands and are s&box attributes for exposing variables and commands to the developer console. Console Commands Conso…
Texture Generators - s&box Editor Documentation
Texture Generators Create procedural textures in code. Generate textures from shapes, gradients, text, or any algorithm. Creating a Generator Inherit from : Pro…
GameResource Extensions - s&box Assets Documentation
GameResource Extensions Extend GameResource types with additional data. Create extensions that attach to existing resources like models or sounds. Creating a Re…
Prefab Spawning and Cloning
Prefab Spawning and Cloning Prefabs are reusable GameObject templates that can be instantiated at runtime. Creating Prefabs Create a GameObject in the scene wit…
GameObjectFlags: DontDestroyOnLoad, NotNetworked, Absolute, and Destroy vs DestroyImmediate
GameObjectFlags: Controlling GameObject Behavior is a flags enum that controls special behaviors for GameObjects. Values Usage ```csharp // Survive scene loads …
Custom GameResource assets — defining asset types with ResourceLibrary and PostLoad registry
Custom GameResource Assets lets you define your own asset types with a custom file extension, inspector UI, and hot-reload support. Assets are JSON files under …
Hotloading — live code reloading, IL fast path, and common pitfalls
Hotloading — Live Code Reloading s&box recompiles and live-reloads your assembly whenever you save a or file. You don't need to restart the editor for most chan…
IHotloadManaged: Preserving and Restoring State Across s&box Hotloads
IHotloadManaged: Preserving State Across s&box Hotloads When a class is hotloaded in s&box, all live instances are replaced with new instances of the updated ty…
Component.GetComponent, GetComponentInChildren, GetComponentInParent — FindMode and RequireComponent
Component.GetComponent, GetComponentInChildren, GetComponentInParent — FindMode Reference Components provide convenient lookup methods for finding other compone…
Prop Component: Procedural Components, Damage System, Gib Spawning, and DamageInfo Patterns
Prop Component: Procedural Physics, Gibs, Damage, and Network Patterns The component is a high-level s&box component that automatically creates , , and componen…