Playing within editor

Writing your editor extension

To play with editor you must have an access to editor world.

Get the World

let editorWorld = Root.GetEngine().GetEditorWorld()

Creating an actor

let actor = new StaticMeshActor(editorWorld)
let cubeMesh = StaticMesh.Load('/Engine/BasicShapes/Cube')
actor.RootComponent.SetWorldLocation({Z:123})
actor.StaticMeshComponent.StaticMesh = cubeMesh

Editor script execution guard

$execEditor( () => {
  // your code goes here to prevent exec-blocking
} )

Transaction for undo/redo

$execTransaction( "Important operation!", () => {
  yourPreciousTarget.ModifyObject(true)
  yourPreciousTarget.yourPreciousProperty = "ALTERED"
  yourPreciousTarget.yourPreciousMethod()
})

Warning

Editor context is not being cleaned up before map load. So every references to actors belonging to previous map should be cleaned up before map load triggered.

ncsoft / Unreal.js