Added nodes etc. for ASE2T3D compatibilty (use submtls should be off!)

This fixes the bug where exporting 3 or more objects would result in
one or more objects have corrupted texture coordinates

README.md

@@ -1,3 +1,8 @@
 # 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.
+
+Resources:
+* https://wiki.beyondunreal.com/Legacy:ASE_File_Format

src/__init__.py

@@ -1,8 +1,8 @@
 bl_info = {
-    'name': 'ASCII Scene Export',
+    'name': 'ASCII Scene Export (ASE)',
     'description': 'Export ASE (ASCII Scene Export) files',
     'author': 'Colin Basnett (Darklight Games)',
-    'version': (1, 0, 0),
+    'version': (1, 2, 1),
     'blender': (2, 90, 0),
     'location': 'File > Import-Export',
     'warning': 'This add-on is under development.',
@@ -20,17 +20,13 @@ if 'bpy' in locals():
     if 'exporter'   in locals(): importlib.reload(exporter)
 
 import bpy
-import bpy.utils.previews
-from bpy.props import IntProperty, CollectionProperty, StringProperty
-import os
+from bpy.props import PointerProperty
 from . import ase
 from . import builder
 from . import writer
 from . import exporter
 
-classes = (
-    exporter.ASE_OT_ExportOperator,
-)
+classes = exporter.__classes__
 
 
 def menu_func_export(self, context):
@@ -43,8 +39,12 @@ def register():
 
     bpy.types.TOPBAR_MT_file_export.append(menu_func_export)
 
+    bpy.types.Scene.ase_export = PointerProperty(type=exporter.AseExportPropertyGroup)
+
 
 def unregister():
+    del bpy.types.Scene.ase_export
+
     bpy.types.TOPBAR_MT_file_export.remove(menu_func_export)
 
     for cls in classes:

src/ase.py

@@ -1,4 +1,7 @@
-class ASEFace(object):
+from typing import List, Tuple
+
+
+class AseFace(object):
     def __init__(self):
         self.a = 0
         self.b = 0
@@ -10,40 +13,37 @@ class ASEFace(object):
         self.material_index = 0
 
 
-class ASEVertexNormal(object):
+class AseVertexNormal(object):
     def __init__(self):
         self.vertex_index = 0
         self.normal = (0.0, 0.0, 0.0)
 
 
-class ASEFaceNormal(object):
+class AseFaceNormal(object):
     def __init__(self):
         self.normal = (0.0, 0.0, 1.0)
-        self.vertex_normals = [ASEVertexNormal()] * 3
+        self.vertex_normals = [AseVertexNormal()] * 3
 
 
-def is_collision_name(name):
-    return name.startswith('MCDCX_')
+class AseUVLayer(object):
+    def __init__(self):
+        self.texture_vertices: List[Tuple[float, float, float]] = []
 
 
-class ASEGeometryObject(object):
+class AseGeometryObject(object):
     def __init__(self):
         self.name = ''
-        self.vertices = []
-        self.texture_vertices = []
-        self.faces = []
+        self.vertices: List[Tuple[float, float, float]] = []
+        self.uv_layers: List[AseUVLayer] = []
+        self.faces: List[AseFace] = []
         self.texture_vertex_faces = []
-        self.face_normals = []
+        self.face_normals: List[AseFaceNormal] = []
+        self.vertex_colors: List[Tuple[float, float, float]] = []
         self.vertex_offset = 0
         self.texture_vertex_offset = 0
 
-    @property
-    def is_collision(self):
-        return is_collision_name(self.name)
 
-
-class ASE(object):
+class Ase(object):
     def __init__(self):
-        self.materials = []
-        self.geometry_objects = []
-
+        self.materials: List[str] = []
+        self.geometry_objects: List[AseGeometryObject] = []

src/builder.py

@@ -5,106 +5,153 @@ import math
 from mathutils import Matrix
 
 
-class ASEBuilderError(Exception):
+def is_collision_name(name: str):
+    return name.startswith('MCDCX_')
+
+
+def is_collision(geometry_object: AseGeometryObject):
+    return is_collision_name(geometry_object.name)
+
+
+class AseBuilderError(Exception):
     pass
 
 
-class ASEBuilderOptions(object):
+class AseBuilderOptions(object):
     def __init__(self):
         self.scale = 1.0
+        self.use_raw_mesh_data = False
 
 
-class ASEBuilder(object):
-    def build(self, context, options: ASEBuilderOptions):
-        ase = ASE()
+def build_ase(context: bpy.types.Context, options: AseBuilderOptions):
+    ase = Ase()
 
-        main_geometry_object = None
-        for obj in context.selected_objects:
-            if obj is None or obj.type != 'MESH':
-                continue
+    main_geometry_object = None
+    for selected_object in context.view_layer.objects.selected:
+        if selected_object is None or selected_object.type != 'MESH':
+            continue
 
-            mesh_data = obj.data
+        # Evaluate the mesh after modifiers are applied
+        if options.use_raw_mesh_data:
+            mesh_object = selected_object
+            mesh_data = mesh_object.data
+        else:
+            depsgraph = context.evaluated_depsgraph_get()
+            bm = bmesh.new()
+            bm.from_object(selected_object, depsgraph)
+            mesh_data = bpy.data.meshes.new('')
+            bm.to_mesh(mesh_data)
+            del bm
+            mesh_object = bpy.data.objects.new('', mesh_data)
+            mesh_object.matrix_world = selected_object.matrix_world
 
-            if not is_collision_name(obj.name) and main_geometry_object is not None:
-                geometry_object = main_geometry_object
-            else:
-                geometry_object = ASEGeometryObject()
-                geometry_object.name = obj.name
-                if not geometry_object.is_collision:
-                    main_geometry_object = geometry_object
-                ase.geometry_objects.append(geometry_object)
+        if not is_collision_name(selected_object.name) and main_geometry_object is not None:
+            geometry_object = main_geometry_object
+        else:
+            geometry_object = AseGeometryObject()
+            geometry_object.name = selected_object.name
+            if not is_collision(geometry_object):
+                main_geometry_object = geometry_object
+            ase.geometry_objects.append(geometry_object)
 
-            if not geometry_object.is_collision and len(mesh_data.materials) == 0:
-                raise ASEBuilderError(f'Mesh \'{obj.name}\' must have at least one material')
+        if is_collision(geometry_object):
+            # Test that collision meshes are manifold and convex.
+            bm = bmesh.new()
+            bm.from_mesh(mesh_data)
+            for edge in bm.edges:
+                if not edge.is_manifold:
+                    del bm
+                    raise AseBuilderError(f'Collision mesh \'{selected_object.name}\' is not manifold')
+                if not edge.is_convex:
+                    del bm
+                    raise AseBuilderError(f'Collision mesh \'{selected_object.name}\' is not convex')
 
-            geometry_object.vertex_offset += len(geometry_object.vertices)
-            vertex_transform = Matrix.Scale(options.scale, 4) @ Matrix.Rotation(math.pi, 4, 'Z') @ obj.matrix_world
-            for vertex_index, vertex in enumerate(mesh_data.vertices):
-                geometry_object.vertices.append(vertex_transform @ vertex.co)
+        if not is_collision(geometry_object) and len(selected_object.data.materials) == 0:
+            raise AseBuilderError(f'Mesh \'{selected_object.name}\' must have at least one material')
 
-            material_indices = []
-            if not geometry_object.is_collision:
-                for mesh_material_index, material in enumerate(mesh_data.materials):
-                    if material is None:
-                        raise ASEBuilderError(f'Material slot {mesh_material_index + 1} for mesh \'{obj.name}\' cannot be empty')
-                    try:
-                        # Reuse existing material entries for duplicates
-                        material_index = ase.materials.index(material.name)
-                    except ValueError:
-                        material_index = len(ase.materials)
-                        ase.materials.append(material.name)
-                    material_indices.append(material_index)
+        vertex_transform = Matrix.Scale(options.scale, 4) @ Matrix.Rotation(math.pi, 4, 'Z') @ mesh_object.matrix_world
+        for vertex in mesh_data.vertices:
+            geometry_object.vertices.append(vertex_transform @ vertex.co)
 
-            mesh_data.calc_loop_triangles()
-            mesh_data.calc_normals_split()
-            poly_groups, groups = mesh_data.calc_smooth_groups(use_bitflags=False)
+        material_indices = []
+        if not is_collision(geometry_object):
+            for mesh_material_index, material in enumerate(selected_object.data.materials):
+                if material is None:
+                    raise AseBuilderError(f'Material slot {mesh_material_index + 1} for mesh \'{selected_object.name}\' cannot be empty')
+                try:
+                    # Reuse existing material entries for duplicates
+                    material_index = ase.materials.index(material.name)
+                except ValueError:
+                    material_index = len(ase.materials)
+                    ase.materials.append(material.name)
+                material_indices.append(material_index)
 
-            # Faces
-            for face_index, loop_triangle in enumerate(mesh_data.loop_triangles):
-                face = ASEFace()
-                face.a = geometry_object.vertex_offset + mesh_data.loops[loop_triangle.loops[0]].vertex_index
-                face.b = geometry_object.vertex_offset + mesh_data.loops[loop_triangle.loops[1]].vertex_index
-                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]
-                geometry_object.faces.append(face)
+        mesh_data.calc_loop_triangles()
+        mesh_data.calc_normals_split()
+        poly_groups, groups = mesh_data.calc_smooth_groups(use_bitflags=False)
 
+        # Faces
+        for loop_triangle in mesh_data.loop_triangles:
+            face = AseFace()
+            face.a = geometry_object.vertex_offset + mesh_data.loops[loop_triangle.loops[0]].vertex_index
+            face.b = geometry_object.vertex_offset + mesh_data.loops[loop_triangle.loops[1]].vertex_index
+            face.c = geometry_object.vertex_offset + mesh_data.loops[loop_triangle.loops[2]].vertex_index
+            if not is_collision(geometry_object):
+                face.material_index = material_indices[loop_triangle.material_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.
+            # The fix is to constrain the smoothing group between 0 and 31 by applying a modulo of 32 to the actual
+            # smoothing group index.
+            # This may result in bad calculated normals on export in rare cases. For example, if a face with a
+            # smoothing group of 3 is adjacent to a face with a smoothing group of 35 (35 % 32 == 3), those faces
+            # will be treated as part of the same smoothing group.
+            face.smoothing = (poly_groups[loop_triangle.polygon_index] - 1) % 32
+            geometry_object.faces.append(face)
+
+        if not is_collision(geometry_object):
             # Normals
-            if not geometry_object.is_collision:
-                for face_index, loop_triangle in enumerate(mesh_data.loop_triangles):
-                    face_normal = ASEFaceNormal()
-                    face_normal.normal = loop_triangle.normal
-                    face_normal.vertex_normals = []
-                    for i in range(3):
-                        vertex_normal = ASEVertexNormal()
-                        vertex_normal.vertex_index = geometry_object.vertex_offset + mesh_data.loops[loop_triangle.loops[i]].vertex_index
-                        vertex_normal.normal = loop_triangle.split_normals[i]
-                        face_normal.vertex_normals.append(vertex_normal)
-                    geometry_object.face_normals.append(face_normal)
-
-            uv_layer = mesh_data.uv_layers.active.data
+            for loop_triangle in mesh_data.loop_triangles:
+                face_normal = AseFaceNormal()
+                face_normal.normal = loop_triangle.normal
+                face_normal.vertex_normals = []
+                for i in range(3):
+                    vertex_normal = AseVertexNormal()
+                    vertex_normal.vertex_index = geometry_object.vertex_offset + mesh_data.loops[loop_triangle.loops[i]].vertex_index
+                    vertex_normal.normal = loop_triangle.split_normals[i]
+                    face_normal.vertex_normals.append(vertex_normal)
+                geometry_object.face_normals.append(face_normal)
 
             # Texture Coordinates
-            geometry_object.texture_vertex_offset += len(geometry_object.texture_vertices)
-            if not geometry_object.is_collision:
+            for i, uv_layer_data in enumerate([x.data for x in mesh_data.uv_layers]):
+                if i >= len(geometry_object.uv_layers):
+                    geometry_object.uv_layers.append(AseUVLayer())
+                uv_layer = geometry_object.uv_layers[i]
                 for loop_index, loop in enumerate(mesh_data.loops):
-                    u, v = uv_layer[loop_index].uv
-                    geometry_object.texture_vertices.append((u, v, 0.0))
+                    u, v = uv_layer_data[loop_index].uv
+                    uv_layer.texture_vertices.append((u, v, 0.0))
 
             # Texture Faces
-            if not geometry_object.is_collision:
-                for loop_triangle in mesh_data.loop_triangles:
-                    geometry_object.texture_vertex_faces.append((
-                        geometry_object.texture_vertex_offset + loop_triangle.loops[0],
-                        geometry_object.texture_vertex_offset + loop_triangle.loops[1],
-                        geometry_object.texture_vertex_offset + loop_triangle.loops[2]
-                    ))
+            for loop_triangle in mesh_data.loop_triangles:
+                geometry_object.texture_vertex_faces.append((
+                    geometry_object.texture_vertex_offset + loop_triangle.loops[0],
+                    geometry_object.texture_vertex_offset + loop_triangle.loops[1],
+                    geometry_object.texture_vertex_offset + loop_triangle.loops[2]
+                ))
 
-        if len(ase.geometry_objects) == 0:
-            raise ASEBuilderError('At least one mesh object must be selected')
+            # Vertex Colors
+            if len(mesh_data.vertex_colors) > 0:
+                vertex_colors = mesh_data.vertex_colors.active.data
+                for color in map(lambda x: x.color, vertex_colors):
+                    geometry_object.vertex_colors.append(tuple(color[0:3]))
 
-        if main_geometry_object is None:
-            raise ASEBuilderError('At least one non-collision mesh must be exported')
+        # Update data offsets for next iteration
+        geometry_object.texture_vertex_offset += len(mesh_data.loops)
+        geometry_object.vertex_offset = len(geometry_object.vertices)
 
-        return ase
+    if len(ase.geometry_objects) == 0:
+        raise AseBuilderError('At least one mesh object must be selected')
+
+    if main_geometry_object is None:
+        raise AseBuilderError('At least one non-collision mesh must be exported')
+
+    return ase

src/exporter.py

@@ -1,47 +1,135 @@
-import bpy
 import bpy_extras
-from bpy.props import StringProperty, FloatProperty, EnumProperty
+import typing
+from bpy.types import UIList, Context, UILayout, AnyType, Operator
+from bpy.props import StringProperty, EnumProperty, BoolProperty, PointerProperty, CollectionProperty, IntProperty
 from .builder import *
 from .writer import *
 
 
+class AseExportCollectionPropertyGroup(bpy.types.PropertyGroup):
+    is_selected: BoolProperty()
+    name: StringProperty()
+    collection: PointerProperty(type=bpy.types.Collection)
+
+
+class AseExportPropertyGroup(bpy.types.PropertyGroup):
+    collection_list: CollectionProperty(type=AseExportCollectionPropertyGroup)
+    collection_list_index: IntProperty()
+
+
+class ASE_UL_CollectionList(UIList):
+    def draw_item(self, context: Context, layout: UILayout, data: AnyType, item: AnyType, icon: int,
+                  active_data: AnyType, active_property: str, index: int = 0, flt_flag: int = 0):
+        collection: bpy.types.Collection = getattr(item, 'collection')
+        row = layout.row()
+        row.prop(item, 'is_selected', text='')
+        row.label(text=collection.name, icon='OUTLINER_COLLECTION')
+
+
+class AseExportCollectionsSelectAll(Operator):
+    bl_idname = 'ase_export.collections_select_all'
+    bl_label = 'All'
+
+    def execute(self, context: Context) -> typing.Union[typing.Set[str], typing.Set[int]]:
+        pg = getattr(context.scene, 'ase_export')
+        for collection in pg.collection_list:
+            collection.is_selected = True
+        return {'FINISHED'}
+
+
+class AseExportCollectionsDeselectAll(Operator):
+    bl_idname = 'ase_export.collections_deselect_all'
+    bl_label = 'None'
+
+    def execute(self, context: Context) -> typing.Union[typing.Set[str], typing.Set[int]]:
+        pg = getattr(context.scene, 'ase_export')
+        for collection in pg.collection_list:
+            collection.is_selected = False
+        return {'FINISHED'}
+
+
 class ASE_OT_ExportOperator(bpy.types.Operator, bpy_extras.io_utils.ExportHelper):
     bl_idname = 'io_scene_ase.ase_export'  # important since its how bpy.ops.import_test.some_data is constructed
     bl_label = 'Export ASE'
     bl_space_type = 'PROPERTIES'
     bl_region_type = 'WINDOW'
-
     filename_ext = '.ase'
-
     filter_glob: StringProperty(
         default="*.ase",
         options={'HIDDEN'},
         maxlen=255,  # Max internal buffer length, longer would be hilighted.
     )
-
-    units = EnumProperty(
+    units: EnumProperty(
+        default='U',
         items=(('M', 'Meters', ''),
                ('U', 'Unreal', '')),
         name='Units'
     )
-
+    use_raw_mesh_data: BoolProperty(
+        default=False,
+        description='No modifiers will be evaluated as part of the exported mesh',
+        name='Raw Mesh Data')
     units_scale = {
         'M': 60.352,
         'U': 1.0
     }
+    should_use_sub_materials: BoolProperty(
+        default=True,
+        description='Material format',  # fill this in with a more human-friendly name/description
+        name='Use Sub-materials'
+    )
 
     def draw(self, context):
+        pg = getattr(context.scene, 'ase_export')
         layout = self.layout
+        rows = max(3, min(len(pg.collection_list), 10))
         layout.prop(self, 'units', expand=False)
+        layout.prop(self, 'use_raw_mesh_data')
+        layout.prop(self, 'should_use_sub_materials')
+
+        # # SELECT ALL/NONE
+        # row = layout.row(align=True)
+        # row.label(text='Select')
+        # row.operator(AseExportCollectionsSelectAll.bl_idname, text='All', icon='CHECKBOX_HLT')
+        # row.operator(AseExportCollectionsDeselectAll.bl_idname, text='None', icon='CHECKBOX_DEHLT')
+        #
+        # layout.template_list('ASE_UL_CollectionList', '', pg, 'collection_list', pg, 'collection_list_index', rows=rows)
+
+    def invoke(self, context: bpy.types.Context, event):
+        # TODO: build a list of collections that have meshes in them
+        pg = getattr(context.scene, 'ase_export')
+        pg.collection_list.clear()
+        for collection in bpy.data.collections:
+            has_meshes = any(map(lambda x: x.type == 'MESH', collection.objects))
+            if has_meshes:
+                c = pg.collection_list.add()
+                c.collection = collection
+
+        context.window_manager.fileselect_add(self)
+
+        return {'RUNNING_MODAL'}
 
     def execute(self, context):
-        options = ASEBuilderOptions()
+        options = AseBuilderOptions()
         options.scale = self.units_scale[self.units]
+        options.use_raw_mesh_data = self.use_raw_mesh_data
         try:
-            ase = ASEBuilder().build(context, options)
-            ASEWriter().write(self.filepath, ase)
+            ase = build_ase(context, options)
+            writer_options = AseWriterOptions()
+            writer_options.should_use_sub_materials = self.should_use_sub_materials
+            AseWriter().write(self.filepath, ase, writer_options)
             self.report({'INFO'}, 'ASE exported successful')
             return {'FINISHED'}
-        except ASEBuilderError as e:
+        except AseBuilderError as e:
             self.report({'ERROR'}, str(e))
             return {'CANCELLED'}
+
+
+__classes__ = (
+    AseExportCollectionPropertyGroup,
+    AseExportPropertyGroup,
+    AseExportCollectionsSelectAll,
+    AseExportCollectionsDeselectAll,
+    ASE_UL_CollectionList,
+    ASE_OT_ExportOperator
+)

src/writer.py

@@ -1,17 +1,22 @@
-from .ase import *
+from .ase import Ase
 
 
-class ASEFile(object):
+class AseWriterOptions(object):
+    def __init__(self):
+        self.should_use_sub_materials = True
+
+
+class AseFile(object):
     def __init__(self):
         self.commands = []
 
     def add_command(self, name):
-        command = ASECommand(name)
+        command = AseCommand(name)
         self.commands.append(command)
         return command
 
 
-class ASECommand(object):
+class AseCommand(object):
     def __init__(self, name):
         self.name = name
         self.data = []
@@ -39,17 +44,17 @@ class ASECommand(object):
         return self
 
     def push_sub_command(self, name):
-        command = ASECommand(name)
+        command = AseCommand(name)
         self.sub_commands.append(command)
         return command
 
     def push_child(self, name):
-        child = ASECommand(name)
+        child = AseCommand(name)
         self.children.append(child)
         return child
 
 
-class ASEWriter(object):
+class AseWriter(object):
 
     def __init__(self):
         self.fp = None
@@ -97,47 +102,77 @@ class ASEWriter(object):
         else:
             self.fp.write('\n')
 
-    def write_file(self, file: ASEFile):
+    def write_file(self, file: AseFile):
+        self.indent = 0
         for command in file.commands:
             self.write_command(command)
 
     @staticmethod
-    def build_ase_tree(ase) -> ASEFile:
-        root = ASEFile()
+    def build_ase_file(ase: Ase, options: AseWriterOptions) -> AseFile:
+        root = AseFile()
         root.add_command('3DSMAX_ASCIIEXPORT').push_datum(200)
 
         # Materials
         if len(ase.materials) > 0:
             material_list = root.add_command('MATERIAL_LIST')
             material_list.push_child('MATERIAL_COUNT').push_datum(len(ase.materials))
-            material_node = material_list.push_child('MATERIAL')
-            material_node.push_child('NUMSUBMTLS').push_datum(len(ase.materials))
-            for material_index, material in enumerate(ase.materials):
-                submaterial_node = material_node.push_child('SUBMATERIAL')
-                submaterial_node.push_datum(material_index)
-                submaterial_node.push_child('MATERIAL_NAME').push_datum(material)
-                diffuse_node = submaterial_node.push_child('MAP_DIFFUSE')
-                diffuse_node.push_child('MAP_NAME').push_datum('default')
-                diffuse_node.push_child('UVW_U_OFFSET').push_datum(0.0)
-                diffuse_node.push_child('UVW_V_OFFSET').push_datum(0.0)
-                diffuse_node.push_child('UVW_U_TILING').push_datum(1.0)
-                diffuse_node.push_child('UVW_V_TILING').push_datum(1.0)
+            if options.should_use_sub_materials:
+                material_node = material_list.push_child('MATERIAL')
+                material_node.push_child('NUMSUBMTLS').push_datum(len(ase.materials))
+                for material_index, material in enumerate(ase.materials):
+                    submaterial_node = material_node.push_child('SUBMATERIAL')
+                    submaterial_node.push_datum(material_index)
+                    submaterial_node.push_child('MATERIAL_NAME').push_datum(material)
+                    diffuse_node = submaterial_node.push_child('MAP_DIFFUSE')
+                    diffuse_node.push_child('MAP_NAME').push_datum('default')
+                    diffuse_node.push_child('UVW_U_OFFSET').push_datum(0.0)
+                    diffuse_node.push_child('UVW_V_OFFSET').push_datum(0.0)
+                    diffuse_node.push_child('UVW_U_TILING').push_datum(1.0)
+                    diffuse_node.push_child('UVW_V_TILING').push_datum(1.0)
+            else:
+                for material_index, material in enumerate(ase.materials):
+                    material_node = material_list.push_child('MATERIAL').push_datum(material_index)
+                    material_node.push_child('MATERIAL_NAME').push_datum(material)
+                    diffuse_node = material_node.push_child('MAP_DIFFUSE')
+                    diffuse_node.push_child('MAP_NAME').push_datum('default')
+                    diffuse_node.push_child('UVW_U_OFFSET').push_datum(0.0)
+                    diffuse_node.push_child('UVW_V_OFFSET').push_datum(0.0)
+                    diffuse_node.push_child('UVW_U_TILING').push_datum(1.0)
+                    diffuse_node.push_child('UVW_V_TILING').push_datum(1.0)
 
         for geometry_object in ase.geometry_objects:
             geomobject_node = root.add_command('GEOMOBJECT')
             geomobject_node.push_child('NODE_NAME').push_datum(geometry_object.name)
 
+            # TODO: only do this in T3D compatibility mode (or just do it always because it makes no difference?)
+            transform_node = geomobject_node.push_child('NODE_TM')
+            transform_node.push_child('NODE_NAME').push_datum(geometry_object.name)
+            transform_node.push_child('INHERIT_POS').push_data([0, 0, 0])
+            transform_node.push_child('INHERIT_ROT').push_data([0, 0, 0])
+            transform_node.push_child('INHERIT_SCL').push_data([0, 0, 0])
+            transform_node.push_child('TM_ROW0').push_data([1.0, 0.0, 0.0])
+            transform_node.push_child('TM_ROW1').push_data([0.0, 1.0, 0.0])
+            transform_node.push_child('TM_ROW2').push_data([0.0, 0.0, 1.0])
+            transform_node.push_child('TM_ROW3').push_data([0.0, 0.0, 0.0])
+            transform_node.push_child('TM_POS').push_data([0.0, 0.0, 0.0])
+            transform_node.push_child('TM_ROTAXIS').push_data([0.0, 0.0, 0.0])
+            transform_node.push_child('TM_ROTANGLE').push_datum(0.0)
+            transform_node.push_child('TM_SCALE').push_datum(0.0)
+            transform_node.push_child('TM_SCALEAXIS').push_data([0.0, 0.0, 0.0])
+            transform_node.push_child('TM_SCALEAXISANG').push_datum(0.0)
+
             mesh_node = geomobject_node.push_child('MESH')
 
-            # Vertices
             mesh_node.push_child('MESH_NUMVERTEX').push_datum(len(geometry_object.vertices))
+            mesh_node.push_child('MESH_NUMFACES').push_datum(len(geometry_object.faces))
+
+            # Vertices
             vertex_list_node = mesh_node.push_child('MESH_VERTEX_LIST')
             for vertex_index, vertex in enumerate(geometry_object.vertices):
                 mesh_vertex = vertex_list_node.push_child('MESH_VERTEX').push_datum(vertex_index)
                 mesh_vertex.push_data([x for x in vertex])
 
             # Faces
-            mesh_node.push_child('MESH_NUMFACES').push_datum(len(geometry_object.faces))
             faces_node = mesh_node.push_child('MESH_FACE_LIST')
             for face_index, face in enumerate(geometry_object.faces):
                 face_node = faces_node.push_child('MESH_FACE')
@@ -146,21 +181,23 @@ class ASEWriter(object):
                 face_node.push_sub_command('MESH_MTLID').push_datum(face.material_index)
 
             # Texture Coordinates
-            if len(geometry_object.texture_vertices) > 0:
-                mesh_node.push_child('MESH_NUMTVERTEX').push_datum(len(geometry_object.texture_vertices))
-                tvertlist_node = mesh_node.push_child('MESH_TVERTLIST')
-                for tvert_index, tvert in enumerate(geometry_object.texture_vertices):
+            for i, uv_layer in enumerate(geometry_object.uv_layers):
+                parent_node = mesh_node if i == 0 else mesh_node.push_child('MESH_MAPPINGCHANNEL')
+                if i > 0:
+                    parent_node.push_datum(i + 1)
+                parent_node.push_child('MESH_NUMTVERTEX').push_datum(len(uv_layer.texture_vertices))
+                tvertlist_node = parent_node.push_child('MESH_TVERTLIST')
+                for tvert_index, tvert in enumerate(uv_layer.texture_vertices):
                     tvert_node = tvertlist_node.push_child('MESH_TVERT')
                     tvert_node.push_datum(tvert_index)
                     tvert_node.push_data(list(tvert))
-
-            # Texture Faces
-            if len(geometry_object.texture_vertex_faces) > 0:
-                mesh_node.push_child('MESH_NUMTVFACES').push_datum(len(geometry_object.texture_vertex_faces))
-                texture_faces_node = mesh_node.push_child('MESH_TFACELIST')
-                for texture_face_index, texture_face in enumerate(geometry_object.texture_vertex_faces):
-                    texture_face_node = texture_faces_node.push_child('MESH_TFACE')
-                    texture_face_node.push_data([texture_face_index] + list(texture_face))
+                # Texture Faces
+                if len(geometry_object.texture_vertex_faces) > 0:
+                    parent_node.push_child('MESH_NUMTVFACES').push_datum(len(geometry_object.texture_vertex_faces))
+                    texture_faces_node = parent_node.push_child('MESH_TFACELIST')
+                    for texture_face_index, texture_face in enumerate(geometry_object.texture_vertex_faces):
+                        texture_face_node = texture_faces_node.push_child('MESH_TFACE')
+                        texture_face_node.push_data([texture_face_index] + list(texture_face))
 
             # Normals
             if len(geometry_object.face_normals) > 0:
@@ -174,12 +211,26 @@ class ASEWriter(object):
                         vertex_normal_node.push_datum(vertex_normal.vertex_index)
                         vertex_normal_node.push_data(list(vertex_normal.normal))
 
+            # Vertex Colors
+            if len(geometry_object.vertex_colors) > 0:
+                mesh_node.push_child('MESH_NUMCVERTEX').push_datum(len(geometry_object.vertex_colors))
+                cvert_list = mesh_node.push_child('MESH_CVERTLIST')
+                for i, vertex_color in enumerate(geometry_object.vertex_colors):
+                    cvert_list.push_child('MESH_VERTCOL').push_datum(i).push_data(vertex_color)
+                mesh_node.push_child('MESH_NUMCVFACES').push_datum(len(geometry_object.texture_vertex_faces))
+                texture_faces_node = mesh_node.push_child('MESH_CFACELIST')
+                for texture_face_index, texture_face in enumerate(geometry_object.texture_vertex_faces):
+                    texture_face_node = texture_faces_node.push_child('MESH_CFACE')
+                    texture_face_node.push_data([texture_face_index] + list(texture_face))
+
+            geomobject_node.push_child('PROP_MOTIONBLUR').push_datum(0)
+            geomobject_node.push_child('PROP_CASTSHADOW').push_datum(1)
+            geomobject_node.push_child('PROP_RECVSHADOW').push_datum(1)
             geomobject_node.push_child('MATERIAL_REF').push_datum(0)
 
         return root
 
-    def write(self, filepath, ase):
-        self.indent = 0
-        ase_file = self.build_ase_tree(ase)
+    def write(self, filepath, ase: Ase, options: AseWriterOptions):
+        ase_file = self.build_ase_file(ase, options)
         with open(filepath, 'w') as self.fp:
             self.write_file(ase_file)