*Actually* fixed the smoothing group problem!

README.md

@@ -1,3 +1,5 @@
 # io_scene_ase
 
-This is a Blender addon allowing you to export static meshes to the now-defunct ASE (ASCII Scene Export) format still in use in legacy programs like Unreal Tournament 2004.
+This is a Blender addon allowing you to export static meshes to the now-defunct ASE (ASCII Scene Export) format still in use in legacy programs like Unreal Tournament 2004.
+
+Check out [this video](https://www.youtube.com/watch?v=gpmBxCGHQjU) on how to install and use the addon.

src/__init__.py

@@ -2,7 +2,7 @@ bl_info = {
     'name': 'ASCII Scene Export',
     'description': 'Export ASE (ASCII Scene Export) files',
     'author': 'Colin Basnett (Darklight Games)',
-    'version': (1, 0, 0),
+    'version': (1, 0, 1),
     'blender': (2, 90, 0),
     'location': 'File > Import-Export',
     'warning': 'This add-on is under development.',

src/builder.py

@@ -67,7 +67,9 @@ class ASEBuilder(object):
                 face.c = geometry_object.vertex_offset + mesh_data.loops[loop_triangle.loops[2]].vertex_index
                 if not geometry_object.is_collision:
                     face.material_index = material_indices[loop_triangle.material_index]
-                face.smoothing = poly_groups[loop_triangle.polygon_index]
+                # The UT2K4 importer only accepts 32 smoothing groups. Anything past this completely mangles the
+                # smoothing groups and effectively makes the whole model use sharp-edge rendering.
+                face.smoothing = (poly_groups[loop_triangle.polygon_index] - 1) % 32
                 geometry_object.faces.append(face)
 
             # Normals