Simulator Services

Provides discoverable access to simulator-managed air-traffic-control state.

Simulator-managed presentation assets for installed aircraft and liveries.

Simulator-neutral audio output and mixer preferences.

Simulator-provided avionics rendering. Positive names hide native suppression switches and keep provider cleanup rules below the SDK.

Simulator-neutral current-view state and deterministic view actions.

Simulator-neutral access to the simulated clock.

Simulator-owned presentation-unit preferences. Physical SDK values remain normalized regardless of these user-interface choices.

Simulator-neutral atmospheric conditions at the user aircraft.

Discovers loaded in-process simulator extensions and communicates through the documented USI extension-notification protocol where the provider supports it.

Configures simulator-generated equipment failures without exposing provider failure registries, codes, or native commands.

Simulator-owned rendering and visual-effect preferences. These controls are independent from aircraft lighting and from camera/view selection.

Discovers physical input devices through the selected simulator.

Simulator-neutral flight and loaded-content lifecycle. Provider event names, callback structures, and plugin messages remain below this contract.

Simulator-owned media capture without exposing provider commands, windows, frame buffers, or native output paths.

Observes simulator-managed mission progress without exposing native mission structures, identifiers, or callback records.

Observable simulator-managed network-session state. This service does not expose provider sockets, peer arrays, native addresses, or data-output slots.

Creates one simulator-neutral provider implementation. Applications use the same and object model regardless of which provider supplies it.

Simulator-owned realism and flight-model policies. These settings determine how the simulator behaves; they are not current aircraft damage or dynamics.

Controls simulator replay playback through one provider-neutral service. Replay files remain owned by the selected simulator; USI does not translate one simulator's replay format into another's.

Simulator-owned policies that alter the normal consumption of aircraft resources. These settings are not physical aircraft-system state.

User preferences controlling simulator-generated safety alerts. These are distinct from actual aircraft warning and caution state.

Loads and saves complete simulator flight-state files through one provider-neutral service. File contents remain owned by the selected simulator; USI does not translate one simulator's saved-flight format into another's.

Starts optional simulator-managed aviation scenarios.

Opens provider-neutral named data channels shared with other simulator clients or plugins. The same API is used for Microsoft Flight Simulator and X-Plane.

Simulator-neutral runtime state whose native delivery mechanism may be a readable value, a system event, or another provider-specific transport.

Observes AI, multiplayer, and externally injected nearby aircraft.

Explicit simulator-owned user-interface navigation without exposing native windows, handles, menu identifiers, or toggle-only commands.

Simulator-neutral virtual-reality presentation and input state.

Geographic and physical-world queries owned by the simulator.

Normalizes simulator-managed air-traffic-control state without exposing provider SimVars, DataRefs, or native Boolean encodings.

Preference-aware measurements whose nullable ATC semantics cannot be emitted by the scalar measurement generator.

Provider-neutral simulator aircraft-asset maintenance.

Keeps simulator-wide sound preferences separate from aircraft radios, warning-system volume, and application audio playback.

Reports a change to simulator-wide audio output.

Provider-authored build details for the simulator product and its native integration API. Descriptions are intentionally opaque because providers may publish dates, source revisions, or other human-readable build text.

Visibility of simulator-provided avionics layers that an application may replace with its own rendering.

Presents stable view concepts while native camera states and commands remain below the simulator boundary.

A portable name for one simulator-managed saved-view slot.

How long the simulator should honor a client camera lease.

Why a controlled simulator camera stopped being active.

Current camera elevations above mean sea level and local ground.

Discrete direction in which the active simulator view should look.

Current camera orientation in simulator-neutral aviation conventions.

How the simulator should present sound and panels for a controlled view.

Reports a change to the simulator's active camera view.

Provider-neutral category of the simulator's active camera view.

A directly selectable simulator camera presentation.

Stable IDs for simulator-level environment, clock, and runtime-state capabilities.

Flight-control functions currently backed by certified hardware.

Converts provider clock scalars into developer-friendly time values.

Additional in-cockpit camera transform relative to aircraft position and orientation, independently of the live cockpit head pose.

Live cockpit eyepoint pose relative to the aircraft center of gravity. Position uses forward, rightward, and upward feet; attitude uses positive yaw to the right, positive pitch nose-up, and positive roll right-wing-down.

The flight-deck crew position represented by an active cockpit view.

Selects the endpoint used by a simulator's real native adapter. Normal SDK connections use .

Simulator-neutral presentation-unit preferences.

Provides local atmospheric state in stable units and directions.

Preference-aware physical measurements for the simulator environment. The explicit-unit operations on remain available for deterministic calculations and interop.

Provider-neutral identity and current state of a loaded extension.

Simulator-neutral failure-generation and repair controls.

Whether the active flight is currently running or stopped.

Simulator-neutral rendering and visual-effect preferences.

Authoritative identity returned by the connected simulator and its native integration API. Version text is provider-authored and is not inferred from USI's selected provider type.

Simulator-observed availability of broad flight-control input sources.

Reports a changed simulator-observed input-source snapshot.

A physical input device currently visible to the simulator.

Default implementation of the unified simulator lifecycle service.

Scope of a provider-managed loaded-aircraft reload.

Broad measurement system selected for simulator presentation.

Simulator-neutral media-capture intents.

Reports completion of a simulator-managed mission.

Outcome reported when a simulator-managed mission ends.

Simulator-neutral network-session observations.

Horizontal and vertical scroll position of a two-dimensional aircraft panel, expressed in the simulator panel's pixel coordinate system.

Stable, extensible identity for a simulator provider. Provider IDs are lowercase dotted names so third-party providers can be added without a new USI release or a change to a closed enumeration.

Provider identities supplied with USI.

Instance-scoped provider catalog. Registering a provider here makes it selectable and eligible for automatic detection by that USI instance.

The crew audio panel currently feeding radio audio to the user's headset.

Simulator-neutral realism and flight-model policies.

A normalized simulator-rendered RGB light color.

Simulator-owned lighting presentation after exposure and time-of-day rendering have been applied.

A simulator replay transport request. The value describes transport intent, not an observed playback state.

Simulator-neutral resource-consumption policies.

Simulator-wide intensity selected for rendered runway lights.

Simulator-neutral preferences for simulator-generated safety alerts.

A simulator-managed quick-load saved-flight slot.

A simulator-managed scenario with a provider-neutral aviation intent.

Provider-neutral simulator scenario selection.

Simulator-owned capacity for aircraft other than the user aircraft.

Identifies who currently owns a provider's exclusive traffic-control facility, when the provider exposes that concept.

Reports a change in the owner of a provider's exclusive traffic-control facility.

Simulator-neutral user-interface navigation intents.

Current simulator rendering viewport dimensions in pixels.

Keeps provider VR state on one discoverable service while preserving exact support differences between controller and hand-tracking implementations.

Reports entry to or exit from virtual-reality presentation.