Building static lights that suppress lighting

Hello,

I don’t understand why when I build my static lights I lose the lighting informations.

Here are two screenshots. For the first one it’s the lighting I want to get, and that is before the building. On the second one it’s the result obtained after the building of the lights. (I placed a SpotLight above, this SpotLight is in static)

2020-12-12 14_19_46-Greenshot.jpg

I really don’t understand what could be the cause. I have tried many times to rebuild but I always get the same result.

I would be very grateful if you could help me. This is a Christmas game that I would like to finish before Christmas so that the children can play it on Christmas Eve.

Hi, is the mobility of all the meshes that get lit by the spot light set to “static” as well? And do you have a lightmass importance volume covering those meshes?

Thank you. Yes, all my meshes are set to “Static” and I have a “Lightmass Importance Volume” covering the area.

Ok, from looking closer at your images it seems like you do have shadows from the tables onto the carpet in the second image. So it doesn’t seem like you have a general problem with static lightning. Therefore I would guess that something is wrong with your wooden floor mesh. What lightmap resolution do you use for it?

Also under “Optimization Viewmodes” you can switch to “Lightmap Density”.

Thank you. I’m a beginner and I’ve never used the “Lightmap Density” view mode. Everything is blue. If I understand correctly it’s not good. But I don’t know how to fix it. The wooden floor is a BSP geometric shape converted to “StaticMesh”.

EDIT : On the StaticMesh of the wooden floor, I have “Overriden Light Map Res” by changing the value from 6 to 64 and the floor became green in the “Lightmap Density” view mode. As I write, I have just started a build and am waiting for it to be finished.

EDIT 2 : Build complete. This did not solve the problem.

Sorry, then I’m out of ideas and I never used BSP brushes. I guess I would try to build a minimalistic example where the light building works and then see the differences between that and your current setup / continue from the minimalistic setup till you either end up with your current setup or encounter the problem/problems that lead to failure in your current setup.

Also here is a learning course about static lightning, and you can also access the project files Lighting Essential Concepts and Effects | Course

Thank you! I tried to change the floor mesh, but the problem is the same. I’m going to take this course. Thank you