You can now emit your own markers into the scene using blueprints.
The dungeon generation pipeline is:
Generate Layout in Memory > Emit Markers > Replace markers with meshes (using theming graph)
Now an extra step is added
Generate Layout in Memory > Emit Markers > Emit custom markers from BP > Replace markers with meshes (using theming graph)
This opens up lots of possibilities for theming as you are no longer bound by what I emit from the builder.
In this example, I created an emitter blueprint that iterates through all rooms and adds markers along a circle. This marker will be encountered by the theming engine so it can be defined in the theme file
watch?v=SbNBVTnSRXY
You can register multiple emitters (e.g. for each effect)
The Marker Emitter Blueprint
The theme file (D_RoomRunes)
Other possibilities are slanted roofs, curved roofs / structures etc, room corner pillars etc. You can place these markers anywhere in the map with any name. I’ll create more samples tomorrow