So i'm trying to make a 3D mesh library to use as a tilemap to build levels with. I understand that every MeshInstance3D in the tilemap scene will be used to create a tile when exporting to a mesh library, but I want some MeshInstance3Ds to contain more MeshInstance3Ds as children. Is that possible?
For instance, I want these three trees to be a single tile, even though they are three copies of the same mesh, but they keep getting exported as a single tree.
Is there an easy way to do this without making the three trees into a single mesh in blender? I don't really want to figure out how to do that.