I wanted to create a model in blender and export it into unreal to do something.
I first wanted to create windows on a wall with boolean generators. But it has some weird effects after being exported into unreal.
So I tried to split the walls into pieces and join them afterwards, but it looks like the unreal still treats them as separate objects.
My question is: how should I exactly join those meshes into one piece (the edges only exists around the windows and outside area) without those weird lighting effects? Thank you!