Landmark Navigation Subsystem

The ULandmarkNavigationSubsystem is a world subsystem responsible for managing registered ULandmarkComponent in the world. It includes a distance-based tick rate system, allowing landmarks closer to the player to update more frequently than those further away. A landmark tick update will update the FLandmarkData member of a LandmarkComponent, which contains all the necessary data for LandmarkNavigation’s system to work (Minimap, Compass and Waypoint).

Some of its settings are exposed in the plugin’s settings.

General

Name	Description
GetAllLandmarkComponents	Retrieves all currently registered landmarks.
OnLandmarkComponentRegistered	Triggers when a landmark is successfully registered.
OnLandmarkComponentUnregistered	Triggers when a landmark is successfully unregistered.

Active Waypoint

Name	Description
SetActiveWaypoint	Set a ULandmarkComponent as active waypoint, meaning it should be displayed on the waypoint widget. There can only be one active map asset at any time.
GetActiveWaypoint	Returns the currently Active Waypoint (LandmarkComponent) or nullptr if none.
OnNewActiveWaypoint	Triggers whenever a new ULandmarkComponent is set as waypoint.

Active Map Asset

Name	Description
SetActiveMapAsset	Set a ULandmarkMapAsset as active, meaning it should be displayed on the minimap. There can only be one active map asset at any time.
GetActiveMapAsset	Returns the currently Active Map Asset or nullptr if none.
OnNewLandmarkMapAsset	Triggers whenever a new ULandmarkMapAsset is set as active.

Landmark Pools

Landmark Pools allows to filter through all registered landmarks based on specific filters. This allows Minimap and Compass widget to handle smaller quantity of landmarks on every tick, and is a crucial performance feature. Each pool can be retrieved via its ‘Pool Name’. This system is already implemented in the Minimap and Compass widgets. Only care to use these features if you wish to create your own systems.

Function Name	Description
CreateLandmarkPool	Creates a named pool of landmarks. When the subsystem ticks, it will also evaluate each pool’s filter conditions to see if the ticking landmark is relevant to this pool. Use the OnLandmarkAdded and OnLandmarkRemoved delegates to bind gameplay to pool changes.
SetLandmarkPoolDistanceRange	Sets the pool’s Distance Range. Can be called during play (when zooming in/out on the minimap for example).
DestroyLandmarkPool	Destroy a LandmarkPool by name.
GetLandmarksFromPool	Returns all the landmarks that are currently relevant to this pool.