Custom landmass spline actor

Does anyone have an idea on how to create an actor that I can drag and behave like a landmass spline? (Mostly doing river I want to control via code)

In my attempt, I managed to create the spline and update the river but somehow I couldn’t manage to create that missing link between the landscape and the spline to affect the heightmap. Any idea?

Any luck?

Any spline blueprint can sculpt the landscape and apply things to the landscape in enditor via bluetility script calls / functions.

Doesnt woek for runtime. Nothing with default landscape works at runtime unless you specifically engineer a way to make it work at runtime.

The existing functions are probably not compatible with landsmass, but they have layer sculpting brushes that could pribably be used to do the same if I remeber correctly.

Either way, all you really lose is the ability to have landscape layer, so not exactly a negative?