Here is what ive done in the past. For all static objects in the level... dynamic entities I use entity color.
I have all of my building blocks as OBJ type with position rotation etc. Then I have a type called SECTION. The section is a final mesh built and light mapped. I create a temp copy of each object called a LMOBJ for light mapped objects. Position them into place, add them to a newly created mesh, and then unweld and light map it with YAL(yet another light mapper found in the code archives. If you play with YAL you'll notice the functions being called here. Its kinda a rough way to do things, but it works for me. So for the editor I just have a toggle that Show_final_meshes if true then hide the building blocks and vice versa.
Include "source\ray_intersect.bb"
Function light_map(section%)
first_selection = False
For O.obj=Each obj
If O\zone% = section% Then
LM.lm_obj=New lm_obj
LM\entity = CopyMesh (block(O\part%))
LM\X# = O\X#
LM\Y# = O\Y#
LM\Z# = O\Z#
LM\RX# = O\RX#
LM\RY# = O\RY#
LM\RZ# = O\RZ#
LM\texture% = O\texture%
EntityFX LM\entity,1
PaintMesh LM\entity,brush_texture( LM\texture% )
RotateMesh LM\entity, LM\RX#, LM\RY#, LM\RZ#
PositionMesh LM\entity, LM\X#, LM\Y#, LM\Z#
EntityPickMode LM\entity,2
If first_selection = False Then
PositionEntity temp_piv,EntityX(O\entity),EntityY(O\entity),EntityZ(O\entity)
first_selection = True
End If
last_x# = O\X#
last_y# = O\y#
last_z# = O\z#
End If
Next
If first_selection=False Then Return
For S.section = Each section
If S\number% = section% Then
FreeEntity S\mesh
S\mesh = CreateMesh()
NameEntity( S\mesh, S\number% )
For N.lm_obj = Each lm_obj
AddMesh N\entity,S\mesh
Next
ThisObscurer.LMObscurer = New LMObscurer
ThisObscurer\Entity = S\mesh
BeginLightMap(Ambient_r%, Ambient_g%, Ambient_b%)
For L.light= Each light
If L\zone% = section%
CreateLMLight( L\X#, L\Y#, L\Z#, L\R%,L\G%,L\B%, L\range%, False, L\brightness%)
End If
Next
tex = LightMapMesh(S\mesh, 2.0, 256, 0, "Lightmapping " + EntityName(S\mesh))
lm_folder$ = "maps\" + map_name$ + "\"
If tex
SaveLightMap(S\mesh, tex, lm_folder$ + EntityName(S\mesh) + ".bmp", lm_folder$ + EntityName(S\mesh) + ".luv")
ApplyLightMap(S\mesh, tex)
EndIf
EndLightMap()
For R.lm_obj=Each lm_obj
FreeEntity R\entity
Delete R
Next
For M.LMLight= Each LMLight
Delete M
Next
If Show_final_meshes = -1 Then HideEntity S\mesh
End If
Next
End Function
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