Py Template: Set the active object in batch export

Some exporters (mdd for example), only use the active object

release/scripts/templates_py/batch_export.py

@@ -9,6 +9,9 @@ basedir = os.path.dirname(bpy.data.filepath)
 if not basedir:
     raise Exception("Blend file is not saved")
 
+scene = bpy.context.scene
+
+obj_active = scene.objects.active
 selection = bpy.context.selected_objects
 
 bpy.ops.object.select_all(action='DESELECT')
@@ -17,6 +20,9 @@ for obj in selection:
 
     obj.select = True
 
+    # some exporters only use the active object
+    scene.objects.active = obj
+
     name = bpy.path.clean_name(obj.name)
     fn = os.path.join(basedir, name)
 
@@ -29,5 +35,8 @@ for obj in selection:
 
     print("written:", fn)
 
+
+scene.objects.active = obj_active
+
 for obj in selection:
     obj.select = True