04 Character Vfx

# Source URL: https://dev.epicgames.com/documentation/en-us/uefn/verse-starter-template-1-creating-npc-behavior-in-unreal-editor-for-fortnite
# Local doc:  epic-docs/documentation/en-us/uefn/verse-starter-template-1-creating-npc-behavior-in-unreal-editor-for-fortnite.md
# Section:    Character VFX
# Creates an arrow prop at the NPC's position that visually shows the orientation of the NPC.
CreateArrow(Agent:agent):void=
    if :
        Character := Agent.GetFortCharacter[]
    then:
        var Transform:transform = Character.GetTransform()
        # Spawn the arrow prop, then set the mesh and material for the prop.
        SpawnPropResult := SpawnProp(ForwardArrowAsset, Transform)
        if:
            SpawnedProp := SpawnPropResult(0)?
        then:
            set ForwardArrow = SpawnedProp
            ForwardArrow.SetMesh(VerseCommander.Meshes.CP_VerseCommander_Floor_01)
            ForwardArrow.SetMaterial(VerseCommander.Materials.MI_CP_VerseCommander_CharacterArrow_01)
            # Update the arrow prop to the position and orientation of the NPC.
            MoveArrow(Agent)
            else:
                SpawnPropIssue:string = case(SpawnPropResult(1)):
                    spawn_prop_result.Ok => "Ok"
                    spawn_prop_result.InvalidSpawnPoint => "Invalid Spawn Point"
                    spawn_prop_result.SpawnPointOutOfBounds => "Spawn Point Outside Island's Boundaries"
                    spawn_prop_result.InvalidAsset => "Asset Is Not a Valid creative_prop"
                    spawn_prop_result.TooManyProps => "Too Many Props Spawned Than Permitted by Island."
                    _ => "Unknown Error"
                ProjectLog("Error spawning prop: {SpawnPropIssue}")

# Update the arrow prop to the position and orientation of the NPC,