Fix for Blender 2.79 files in 2019.2.0a13 (Unity-BlenderToFBX.py)

I just upgraded from a9 to a13 and importing of .blend files from blender 2.79b was broken.

It was detecting 2.79 as 2.49 or older ...

I edited the script, replacing the way version detection is done and deleted pre 2.5 code (almost 10 years ago )

For people that have same problem can find that file at:
C:\Program Files\Unity\Hub\Editor\2019.2.0a13\Editor\Data\Tools\Unity-BlenderToFBX.py

*Didn't test this with 2.8 yet

Code (CSharp):

1.  
2. import bpy.ops
3. import bpy
4.  
5. minor = bpy.app.version[1]
6.  
7. blender280 = minor >= 80
8.  
9. if not blender280:
10.         try:
11.             import io_scene_fbx.export_fbx
12.         except:
13.             print('error: io_scene_fbx.export_fbx not found.')
14.             # This might need to be bpy.Quit()
15.             raise
16.  
17. # Find the Blender output file
18. import os
19. outfile = os.getenv("UNITY_BLENDER_EXPORTER_OUTPUT_FILE")
20.  
21. # Do the conversion
22. print("Starting blender to FBX conversion " + outfile)
23.  
24. if blender280:
25.     bpy.ops.export_scene.fbx(filepath=outfile,
26.         check_existing=False,
27.         use_selection=False,
28.         use_active_collection=False,
29.         object_types= {'ARMATURE','CAMERA','LIGHT','MESH','EMPTY'},
30.         use_mesh_modifiers=True,
31.         mesh_smooth_type='OFF',
32.         use_custom_props=True,
33.         apply_scale_options='FBX_SCALE_ALL'
34.     )
35. else:
36.     # blender 2.58 or newer
37.     import math
38.     from mathutils import Matrix
39.     # -90 degrees
40.     mtx4_x90n = Matrix.Rotation(-math.pi / 2.0, 4, 'X')
41.  
42.     print("moo")
43.  
44.     class FakeOp:
45.         def report(self, tp, msg):
46.             print("%s: %s" % (tp, msg))
47.  
48.     exportObjects = ['ARMATURE', 'EMPTY', 'MESH']
49.  
50.     minorVersion = bpy.app.version[1];
51.     if minorVersion <= 58:
52.         # 2.58
53.         io_scene_fbx.export_fbx.save(FakeOp(), bpy.context, filepath=outfile,
54.             global_matrix=mtx4_x90n,
55.             use_selection=False,
56.             object_types=exportObjects,
57.             mesh_apply_modifiers=True,
58.             ANIM_ENABLE=True,
59.             ANIM_OPTIMIZE=False,
60.             ANIM_OPTIMIZE_PRECISSION=6,
61.             ANIM_ACTION_ALL=True,
62.             batch_mode='OFF',
63.             BATCH_OWN_DIR=False)
64.     else:
65.         # 2.59 and later
66.         kwargs = io_scene_fbx.export_fbx.defaults_unity3d()
67.         io_scene_fbx.export_fbx.save(FakeOp(), bpy.context, filepath=outfile, **kwargs)
68.     # HQ normals are not supported in the current exporter
69.  
70. print("Finished blender to FBX conversion " + outfile)
71.  
72.  

 

Hi @Snorkel

I made a small hack in this script ( that i found on the web ) for allowing me
to define wether an obj will be imported in unity or not, according to the 1st char of its name.

here is the lil change i made:

Code (CSharp):

1.         # 2.59 and later
2.  
3.         # HACK SELECTIVE BLENDER IMPORT
4.         for obj in bpy.data.objects:
5.             obj.select = False if obj.name[0] in '_.' else True
6.         #end HACK
7.  
8.  
9.  
10.         kwargs = io_scene_fbx.export_fbx.defaults_unity3d()
11.  
12.         # HACK SELECTIVE BLENDER IMPORT
13.         kwargs["use_selection"] = True
14.         #end HACK
15.  
16.         io_scene_fbx.export_fbx.save(FakeOp(), bpy.context, filepath=outfile, **kwargs)
17.  
18.     # HQ normals are not supported in the current exporter
19.  
20.  
21.  
22. print("Finished blender to FBX conversion " + outfile)

it replaces the end of your script.

For some reason i don't get this script don't work anymore with unity 2019 :/
And i'm far from easy with python and moreover with how blender works for guessing what i should do

do you think you could help me with this please ?

thanks in advance

Happy unitying !

EDIT:
i finally made it work...... it seems it was unity's code that didn't do proper things :/
https://forum.unity.com/threads/selective-import-of-blender-models.572971/#post-4564066