Sorry for my lack of updates. I´ve been crunching with this day and night. I created a better system for modular buildings using parent blueprint class that controls exterior wall paint and trim colors, terrace colors, interior wall materials/colors, curtain colors, floor colors and so on. Also local fog and post process volumes and bunch of different triggers to help change things when player is inside or outside. Its actually pretty hard to get both outside and inside working well. I also made A LOT more furniture and building related props.
I re-tweaked the whole lighting system to make it fully support dynamic day and night cycle with distance field effects. There is also now support for rain so materials will get wet depending on the metallic values, non-metallic materials will get darker and roughness values are changing. Water drop layer is added on top of models using world aligned blend with flip book normal texture. All of this is controlled in the environment control blueprint where I can specify what time of day it is, how fast the time will go, how dry the air is so there will be dusty wind and so on… Oh and I also added LPV support and it works as good as LPVs can
Landscape material is also tweaked more. There is now a new function in the sand layer to have windy sand effect. Rock material is using distance fields to blend them better with the ground and also its much more generic approach so its so much faster to make rocks without any extra texture baking needed.
More foliage types created like different type of cactus models, better rules for procedural foliage spawners. I also hand made colliders for every model so its possible to use this environment for something I will try to capture some gameplay and video footage.