WorldPanel and ScreenPanel — HUD overlays and 3D world-space UI with Razor PanelComponent
WorldPanel and ScreenPanel — UI in the World s&box UI uses (Razor) attached to either a (HUD overlay) or (3D world-space UI). The same component works with both…
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…
DebugOverlay — in-game visualization for spheres, lines, text, and traces
DebugOverlay — In-Editor and In-Game Visualization draws shapes, text, and traces in the world for debugging. All draws are temporary and disappear after a spec…
Custom editor tools — EditorTool, Gizmo drawing, scene tracing, and overlay UI
Custom Editor Tools Editor tools appear in the s&box toolbar and let you build scene editing workflows — painting, placement, custom gizmos. They must live in a…
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…
s&box Hints GameObjectSystem: UI hint queue
Hints GameObjectSystem Example Hints is a GameObjectSystem that manages the display of timed popup hints in the UI. It queues hints with delays and displays the…
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,…
Sandbox: ISpawner interface — custom spawner pattern with ISpawnEvents
ISpawner Interface — Custom Spawner Pattern The interface defines the contract for anything that can be spawned via the spawn menu. Implementations include , , …
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…
Sandbox: Ownable component — prop protection with IPhysgunEvent and IToolgunEvent
Ownable Component — Prop Protection and Physgun/Toolgun Access Control The component tracks which spawned a . It implements and to enforce ownership checks when…
Sandbox: BaseWeapon — ammo system, reload, shoot delay, and IPlayerControllable
BaseWeapon — Ammo, Reloading, and Firing Pattern extends and adds ammo management, reloading, and a shoot delay system. It implements so it can also be used fro…
Sandbox: LimitsSystem — server-side per-player spawn and tool limits via ConVars
LimitsSystem — Server-Side Spawn and Tool Limits is a that enforces configurable per-player limits on props, constraints, and tool entities. It listens to and .…
Sandbox: CameraNoiseSystem — screen shake, punch, and recoil with ICameraSetup
CameraNoiseSystem — Screen Shake, Punch, and Recoil Effects is a that implements to apply camera noise effects (shake, punch, recoil) each frame. Effects are in…
Sandbox: Physgun — grab, freeze, launch, and pull mechanics
Physgun — Grab, Freeze, Launch, and Pull Mechanics The Physgun () is a that lets players grab, move, freeze, and launch physics objects. It uses a struct to tra…
Sandbox: BaseConstraintToolMode — two-stage constraint creation with IToolActionEvents
BaseConstraintToolMode — Two-Stage Constraint Creation Pattern is the base for all two-point constraint tools (Weld, Rope, BallSocket, Elastic, Hydraulic, NoCol…
Sandbox: ControlSystem — vehicle seat and contraption control with IPlayerControllable
ControlSystem — Vehicle Seat and Contraption Control is a that drives components on contraptions. When a player sits in a , the system walks the connected contr…
Sandbox: ThrusterEntity and WheelEntity — contraption propulsion with ClientInput bindings
ThrusterEntity and WheelEntity — Contraption Propulsion Components Both and implement and use properties so players can bind them to keys from a vehicle seat. T…
Sandbox: Stacker tool — duplicate objects in a line or arc with StackAlignMode
Stacker Tool — Duplicate Objects in a Line or Arc The Stacker tool clones a selected object N times along a configurable axis with optional rotation and gap. It…
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…
Sandbox: BaseBulletWeapon — hitscan shooting with BulletConfiguration, recoil, and IronSightsWeapon
BaseBulletWeapon — Hitscan Shooting with Recoil and Camera Noise extends and implements hitscan bullet firing with configurable aim cone, recoil, and camera noi…