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EDInteractionLib

UEDInteractionLib is a UBlueprintFunctionLibrary containing reusable helpers.

Header:

  • Source/EDInteractionSystem/Public/Library/EDInteractionLib.h

Instanced mesh helpers​

GetInstanceLocation​

Gets the world location of an instance by index.

GetInstanceIndexAtLocation​

Finds an instance index at a world location. Also reports whether multiple instances share the same location.

This is used heavily by:

  • Replication of removed foliage instances
  • Respawn logic
  • Server validation of foliage hit items

RemoveInstanceByHitItem​

Removes an instance using its instance index (HitItem) on an instanced component.

GetInteractableFoliageDataByStaticMesh​

Looks up the configured FEDFoliageInteractionData for a mesh using Project Settings.

Trace method helpers​

ResolveTraceMethod​

Resolves UseDefaultMethod to the given default method.

AllowsDirectTrace​

Returns whether a trace method allows direct tracing.

Scoring helpers​

ComputeLookAtPercentage​

Computes how well the target is aligned with the camera forward vector.

ProcessInteractionTarget​

Central helper used by the player component to:

  • Validate a candidate (distance/look-at policy)
  • Compute its score
  • Decide whether auto-interaction should trigger

Validation helpers​

IsViewOnActorBlocked​

Checks line-of-sight between a view start and an actor “center”, optionally using a list of dimension components.

IsViewOnFoliageInstanceBlocked​

Checks line-of-sight against a foliage instance.