Editor Tools
Editor Tools Create custom tools for the s&box editor. Creating a Tool Scene Access Gizmo Drawing Preventing Selection Overlay UI Editor Project Setup Tools mus…
Component Editor Tools: Selection-Based Scene View UI and Gizmos
Component Editor Tools in s&box are always active when a specific Component is selected. They create UI in the scene view and can override input. An example is …
Sandbox: Weld tool — FixedJoint constraint with EasyMode rotation
Sandbox Weld Tool — Constraint Creation with EasyMode Rotation The Weld tool creates constraints between two GameObjects. It has an EasyMode that lets the playe…
Mapping - s&box Editor Documentation
Mapping s&box includes Hammer, the Source 2 level editor, for creating maps and environments. Build worlds with brushes, props, lighting, and gameplay entities.…
Editor - s&box Documentation
Editor The s&box Editor provides a modern interface for building games. Features Asset Previews - Thumbnails for models, materials, textures Custom Editors - Sp…
PolygonMesh — procedural block meshes with per-face materials and vertex editing
PolygonMesh — Procedural Block Meshes s&box includes a API for creating and editing meshes at runtime or in editor tools. The editor's block mesh tools use this…
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…
Terrain System
Terrain System Create expansive outdoor environments with real-time terrain editing, heightmap import, and multi-layer materials. Features Creating Terrain Add …
Sandbox: Hydraulic tool — motorized SliderJoint with LineRenderer shaft
Sandbox Hydraulic Tool — Motorized SliderJoint Constraints The Hydraulic tool creates a between two objects with a component that can extend and retract the joi…
s&box SnapGrid: World-space snap grid overlay
SnapGrid: World-Space Snap Grid Overlay SnapGrid is a sealed class that manages a world-space snap grid overlay projected onto a surface plane. It is used by th…
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-…
Connection Permissions - s&box Networking Documentation
Connection Permissions Connection permissions control what clients can do in your multiplayer game. Set permissions for spawning objects, using tools, or perfor…
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…
Testing Multiplayer: New Instances, Hotloading, and Local Connect
s&box provides built-in tools for testing multiplayer without needing another player. You can spawn additional game instances that join your running session, wi…
Clutter System: GPU-Instanced Scattering for Grass, Rocks, and Debris
The s&box Clutter System scatters large amounts of small objects (grass, rocks, debris) with GPU-instanced rendering. It handles placement, streaming, and LOD a…
s&box StackDirection: Stacker tool directions
s&box StackDirection Enum StackDirection is an enum used by the Stacker tool to specify which axis to stack objects along. It defines the six cardinal direction…
Movie Maker - s&box Documentation
Official s&box documentation for the Movie Maker - cinematic recording and editing. Movie Maker provides tools for creating cinematic sequences and gameplay rec…
Custom Editors
Custom Editors Create custom editor widgets for your classes, structs, and assets. ControlWidget (Property Editor) Create custom property editors using : Attrib…
Sandbox: PlayerInventory — weapon slots, pickup, drop, and loadout persistence
Sandbox PlayerInventory — Weapon Slots, Pickup, Drop, and Loadout Persistence manages up to 6 weapon slots, handles pickup/drop logic, and delegates loadout sav…
Testing Multiplayer: Local Multi-Instance Development Workflow
The best way to test multiplayer is having someone join your game, but s&box provides tools for solo testing. Spawning a New Instance Click the network status i…