Ensure that objects have unique names while exporting a scene

[libs/gl.git] / blender / io_mspgl / export_scene.py

diff --git a/blender/io_mspgl/export_scene.py b/blender/io_mspgl/export_scene.py
index cd2bba8e3bb8b036a9b3ad0ea05295423d8a97d6..2ec85ccbddbdef3ed708ddae330d5b713fb98bea 100644 (file)
--- a/blender/io_mspgl/export_scene.py
+++ b/blender/io_mspgl/export_scene.py
@@ -30,21 +30,21 @@ class SceneExporter:
                object_prototypes = {}
                unique_objects = []
                export_names = {}
+               used_names = set()
                for o in objs:
                        if o.name in object_prototypes:
                                continue
 
                        clones = [o]
-                       if not any(s.link=="OBJECT" for s in o.material_slots):
-                               for u in objs:
-                                       if u is o:
-                                               continue
-                                       if u.data.name!=o.data.name:
-                                               continue
-                                       if any(s.link=="OBJECT" for s in u.material_slots):
-                                               continue
+                       for u in objs:
+                               if u is o:
+                                       continue
+                               if u.data.name!=o.data.name:
+                                       continue
+                               if any(m1.name!=m2.name for m1, m2 in zip(o.material_slots, u.material_slots)):
+                                       continue
 
-                                       clones.append(u)
+                               clones.append(u)
 
                        prefix = o.name
                        for c in clones:
@@ -55,12 +55,23 @@ class SceneExporter:
                                        prefix = prefix[:pos]
 
                        if prefix:
-                               export_names[o.name+".object"] = prefix.strip(" .")+".object"
+                               export_names[o.name+".object"] = prefix.strip(" .")
+                       else:
+                               used_names.add(o.name)
 
                        unique_objects.append(o)
                        for c in clones:
                                object_prototypes[c.name] = o
 
+               for n, e in export_names.items():
+                       if e in used_names:
+                               number = 1
+                               while "{}_{}".format(e, number) in used_names:
+                                       number += 1
+                               e += "_{}".format(number)
+                       export_names[n] = e+".object"
+                       used_names.add(e)
+
                from .util import Progress
                progress = Progress(self.show_progress and context)