Merge branch 'blender-4.1' into scale_keys

# Conflicts:
#	io_scene_psk_psa/psa/import_/operators.py
#	io_scene_psk_psa/psa/importer.py

.github/workflows/main.yml

@@ -1,32 +0,0 @@
-name: Verify Addon
-
-on:
-  workflow_dispatch:
-  push:
-    branches: [ "main" ]
-  pull_request:
-    branches: [ "main" ]
-    
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    env:
-      BLENDER_VERSION: blender-4.2.0-beta+v42.d19d23e91f65-linux.x86_64-release
-    steps:
-      - name: Set derived environment variables
-        run: |
-          echo "BLENDER_FILENAME=${{ env.BLENDER_VERSION }}.tar.xz" >> $GITHUB_ENV
-          echo "BLENDER_URL=https://cdn.builder.blender.org/download/daily/${{ env.BLENDER_VERSION }}.tar.xz" >> $GITHUB_ENV
-      - name: Install Blender Dependencies
-        run: |
-          apt install libxxf86vm-dev -y
-          apt install libxfixes3 -y
-          apt install libxi-dev -y
-          apt install libxkbcommon-x11-0 -y
-          apt install libgl1-mesa-glx -y
-      - name: Download Blender
-        run: |
-          wget $BLENDER_URL
-          tar -xvzf $BLENDER_FILENAME
-          rm -rf $BLENDER_FILENAME
-      - uses: actions/checkout@v3

COPYING

@@ -1,674 +0,0 @@
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-if any, to sign a "copyright disclaimer" for the program, if necessary.
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-<https://www.gnu.org/licenses/>.
-
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-into proprietary programs.  If your program is a subroutine library, you
-may consider it more useful to permit linking proprietary applications with
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-Public License instead of this License.  But first, please read
-<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -5,15 +5,12 @@
 
 This Blender addon allows you to import and export meshes and animations to and from the [PSK and PSA file formats](https://wiki.beyondunreal.com/PSK_%26_PSA_file_formats) used in many versions of the Unreal Engine.
 
-This software is licensed under the [GPLv3](https://www.gnu.org/licenses/gpl-3.0.html) license.
+## Compatibility
-
-# Compatibility
 
 | Blender Version                                              | Addon Version                                                                  | Long Term Support |
-|-|-|-|
+|--------------------------------------------------------------|--------------------------------------------------------------------------------|-------------------|
-| [4.1](https://www.blender.org/download/releases/4-1/) | [latest](https://github.com/DarklightGames/io_scene_psk_psa/releases/latest)   | TBD |
+| 4.0+                                                         | [latest](https://github.com/DarklightGames/io_scene_psk_psa/releases/latest)   | TBD               |
-| [4.0](https://www.blender.org/download/releases/4-0/) | [6.2.1](https://github.com/DarklightGames/io_scene_psk_psa/releases/tag/6.2.1) | TBD |
+| [3.4 - 3.6](https://www.blender.org/download/lts/3-6/)       | [5.0.5](https://github.com/DarklightGames/io_scene_psk_psa/releases/tag/5.0.5) | ✅️ June 2025      |
-| [3.4 - 3.6](https://www.blender.org/download/lts/3-6/) | [5.0.6](https://github.com/DarklightGames/io_scene_psk_psa/releases/tag/5.0.6) | ✅️ June 2025 |
 | [2.93 - 3.3](https://www.blender.org/download/releases/3-3/) | [4.3.0](https://github.com/DarklightGames/io_scene_psk_psa/releases/tag/4.3.0) | ✅️ September 2024 |
 
 Bug fixes will be issued for legacy addon versions that are under [Blender's LTS maintenance period](https://www.blender.org/download/lts/). Once the LTS period has ended, legacy addon versions will no longer be supported by the maintainers of this repository, although we will accept pull requests for bug fixes. 

build.py

@@ -0,0 +1,41 @@
+import os
+import subprocess
+from fnmatch import fnmatch
+from zipfile import ZipFile, ZIP_DEFLATED
+
+ignore_patterns = [
+    '*/__pycache__/*',
+    '*/.git/*',
+    '*/.github/*',
+    '*/.idea/*',
+    '*/venv/*',
+    '*/.gitignore',
+    '*/.gitattributes',
+    '*/build/*',
+    '*/build.py',
+]
+
+
+def zipdir(path, zip_file: ZipFile):
+    for root, dirs, files in os.walk(path):
+        for file in files:
+            if file != zip_file.filename and not any(fnmatch(os.path.join(root, file), pattern) for pattern in ignore_patterns):
+                zip_file.write(os.path.join(root, file))
+
+# Get the branch name.
+branch = subprocess.check_output(['git', 'rev-parse', '--abbrev-ref', 'HEAD']).decode('utf-8').strip()
+
+# Get the most recent tag.
+tag = subprocess.check_output(['git', 'describe', '--tags', '--abbrev=0']).decode('utf-8').strip()
+
+# Create a zip file of the current directory.
+
+zip_path = f'./build/io_scene_psk_psa-{branch}-{tag}.zip'
+
+# Check that the directory exists, if it doesn't, create it.
+if not os.path.exists('./build'):
+    os.makedirs('./build')
+
+zipf = ZipFile(zip_path, 'w', ZIP_DEFLATED)
+zipdir('.', zipf)
+zipf.close()

io_scene_psk_psa/__init__.py

@@ -1,11 +1,23 @@
 from bpy.app.handlers import persistent
 
+bl_info = {
+    'name': 'PSK/PSA Importer/Exporter',
+    'author': 'Colin Basnett, Yurii Ti',
+    'version': (6, 2, 0),
+    'blender': (4, 0, 0),
+    'description': 'PSK/PSA Import/Export (.psk/.psa)',
+    'warning': '',
+    'doc_url': 'https://github.com/DarklightGames/io_scene_psk_psa',
+    'tracker_url': 'https://github.com/DarklightGames/io_scene_psk_psa/issues',
+    'category': 'Import-Export'
+}
+
 if 'bpy' in locals():
     import importlib
 
-    importlib.reload(shared_data)
+    importlib.reload(psx_data)
-    importlib.reload(shared_helpers)
+    importlib.reload(psx_helpers)
-    importlib.reload(shared_types)
+    importlib.reload(psx_types)
 
     importlib.reload(psk_data)
     importlib.reload(psk_reader)
@@ -32,30 +44,39 @@ if 'bpy' in locals():
     importlib.reload(psa_import_operators)
     importlib.reload(psa_import_ui)
 else:
-    from .shared import data as shared_data, types as shared_types, helpers as shared_helpers
+    # if i remove this line, it can be enabled just fine
-    from .psk import data as psk_data, builder as psk_builder, writer as psk_writer, \
+    from . import data as psx_data
-    importer as psk_importer, properties as psk_properties
+    from . import helpers as psx_helpers
-    from .psk import reader as psk_reader, ui as psk_ui
+    from . import types as psx_types
-    from .psk.export import properties as psk_export_properties, ui as psk_export_ui, \
+    from .psk import data as psk_data
-        operators as psk_export_operators
+    from .psk import reader as psk_reader
+    from .psk import writer as psk_writer
+    from .psk import builder as psk_builder
+    from .psk import importer as psk_importer
+    from .psk import properties as psk_properties
+    from .psk import ui as psk_ui
+    from .psk.export import properties as psk_export_properties
+    from .psk.export import operators as psk_export_operators
+    from .psk.export import ui as psk_export_ui
     from .psk.import_ import operators as psk_import_operators
 
-    from .psa import config as psa_config, data as psa_data, writer as psa_writer, reader as psa_reader, \
+    from .psa import data as psa_data
-        builder as psa_builder, importer as psa_importer
+    from .psa import config as psa_config
-    from .psa.export import properties as psa_export_properties, ui as psa_export_ui, \
+    from .psa import reader as psa_reader
-        operators as psa_export_operators
+    from .psa import writer as psa_writer
+    from .psa import builder as psa_builder
+    from .psa import importer as psa_importer
+    from .psa.export import properties as psa_export_properties
+    from .psa.export import operators as psa_export_operators
+    from .psa.export import ui as psa_export_ui
+    from .psa.import_ import properties as psa_import_properties
     from .psa.import_ import operators as psa_import_operators
-    from .psa.import_ import ui as psa_import_ui, properties as psa_import_properties
+    from .psa.import_ import ui as psa_import_ui
 
 import bpy
 from bpy.props import PointerProperty
 
-# TODO: just here so that it's not unreferenced and removed on save.
+classes = psx_types.classes +\
-if [shared_data, shared_helpers, psk_data, psk_reader, psk_writer, psk_builder, psk_importer, psa_data, psa_config,
-    psa_reader, psa_writer, psa_builder, psa_importer]:
-    pass
-
-classes = shared_types.classes +\
           psk_properties.classes +\
           psk_ui.classes +\
           psk_import_operators.classes +\
@@ -97,7 +118,7 @@ def register():
     bpy.types.Scene.psa_import = PointerProperty(type=psa_import_properties.PSA_PG_import)
     bpy.types.Scene.psa_export = PointerProperty(type=psa_export_properties.PSA_PG_export)
     bpy.types.Scene.psk_export = PointerProperty(type=psk_export_properties.PSK_PG_export)
-    bpy.types.Action.psa_export = PointerProperty(type=shared_types.PSX_PG_action_export)
+    bpy.types.Action.psa_export = PointerProperty(type=psx_types.PSX_PG_action_export)
 
 
 def unregister():

io_scene_psk_psa/blender_manifest.toml

@@ -1,24 +0,0 @@
-schema_version = "1.0.0"
-id = "io_scene_psk_psa"
-version = "7.1.0"
-name = "Unreal Mesh & Animation (.psk/.psa)"
-tagline = "Import and export PSK and PSA files used in Unreal Engine"
-maintainer = "Colin Basnett <cmbasnett@gmail.com>"
-type = "add-on"
-website = "https://github.com/DarklightGames/io_scene_psk_psa/"
-tags = ["Game Engine", "Import-Export"]
-blender_version_min = "4.2.0"
-# Optional: maximum supported Blender version
-# blender_version_max = "5.1.0"
-license = [
-  "SPDX:GPL-3.0-or-later",
-]
-
-[build]
-paths_exclude_pattern = [
-  "/.git/",
-  "__pycache__/",
-  "/venv/",
-  "/.github/",
-  ".gitignore",
-]

io_scene_psk_psa/helpers.py

@@ -30,12 +30,12 @@ def get_nla_strips_in_frame_range(animation_data: AnimData, frame_min: float, fr
 
 
 def populate_bone_collection_list(armature_object: Object, bone_collection_list: bpy.props.CollectionProperty) -> None:
-    """
+    '''
     Updates the bone collections collection.
 
     Bone collection selections are preserved between updates unless none of the groups were previously selected;
     otherwise, all collections are selected by default.
-    """
+    '''
     has_selected_collections = any([g.is_selected for g in bone_collection_list])
     unassigned_collection_is_selected, selected_assigned_collection_names = True, []
 
@@ -84,7 +84,7 @@ def check_bone_names(bone_names: Iterable[str]):
 
 
 def get_export_bone_names(armature_object: Object, bone_filter_mode: str, bone_collection_indices: List[int]) -> List[str]:
-    """
+    '''
     Returns a sorted list of bone indices that should be exported for the given bone filter mode and bone collections.
 
     Note that the ancestors of bones within the bone collections will also be present in the returned list.
@@ -93,7 +93,7 @@ def get_export_bone_names(armature_object: Object, bone_filter_mode: str, bone_c
     :param bone_filter_mode: One of ['ALL', 'BONE_COLLECTIONS']
     :param bone_collection_indices: List of bone collection indices to be exported.
     :return: A sorted list of bone indices that should be exported.
-    """
+    '''
     if armature_object is None or armature_object.type != 'ARMATURE':
         raise ValueError('An armature object must be supplied')
 

io_scene_psk_psa/psa/builder.py

@@ -3,7 +3,7 @@ from typing import Optional
 from bpy.types import Armature, Bone, Action, PoseBone
 
 from .data import *
-from ..shared.helpers import *
+from ..helpers import *
 
 
 class PsaBuildSequence:

io_scene_psk_psa/psa/data.py

@@ -2,7 +2,7 @@ import typing
 from collections import OrderedDict
 from typing import List
 
-from ..shared.data import *
+from ..data import *
 
 '''
 Note that keys are not stored within the Psa object.
@@ -58,7 +58,27 @@ class Psa:
         def __repr__(self) -> str:
             return repr((self.location, self.rotation, self.time))
 
+    class ScaleKey(Structure):
+        _fields_ = [
+            ('scale', Vector3),
+            ('time', c_float)
+        ]
+
+        @property
+        def data(self):
+            yield self.scale.x
+            yield self.scale.y
+            yield self.scale.z
+
+        def __repr__(self) -> str:
+            return repr((self.scale, self.time))
+
     def __init__(self):
         self.bones: List[Psa.Bone] = []
         self.sequences: typing.OrderedDict[str, Psa.Sequence] = OrderedDict()
         self.keys: List[Psa.Key] = []
+        self.scale_keys: List[Psa.ScaleKey] = []
+
+    @property
+    def has_scale_keys(self):
+        return len(self.scale_keys) > 0

io_scene_psk_psa/psa/export/operators.py

@@ -11,7 +11,7 @@ from bpy_types import Operator
 from .properties import PSA_PG_export, PSA_PG_export_action_list_item, filter_sequences
 from ..builder import build_psa, PsaBuildSequence, PsaBuildOptions
 from ..writer import write_psa
-from ...shared.helpers import populate_bone_collection_list, get_nla_strips_in_frame_range
+from ...helpers import populate_bone_collection_list, get_nla_strips_in_frame_range
 
 
 def is_action_for_armature(armature: Armature, action: Action):
@@ -62,7 +62,7 @@ def update_actions_and_timeline_markers(context: Context, armature: Armature):
         for pose_marker_index, pose_marker in enumerate(pose_markers):
             if pose_marker.name.strip() == '' or pose_marker.name.startswith('#'):
                 continue
-            for (name, frame_start, frame_end) in get_sequences_from_action_pose_markers(action, pose_markers, pose_marker, pose_marker_index):
+            for (name, frame_start, frame_end) in get_sequences_from_action_pose_marker(action, pose_markers, pose_marker, pose_marker_index):
                 item = pg.action_list.add()
                 item.action = action
                 item.name = name
@@ -188,18 +188,13 @@ def get_sequences_from_action(action: Action) -> List[Tuple[str, int, int]]:
     return get_sequences_from_name_and_frame_range(action.name, frame_start, frame_end)
 
 
-def get_sequences_from_action_pose_markers(action: Action, pose_markers: List[TimelineMarker], pose_marker: TimelineMarker, pose_marker_index: int) -> List[Tuple[str, int, int]]:
+def get_sequences_from_action_pose_marker(action: Action, pose_markers: List[TimelineMarker], pose_marker: TimelineMarker, pose_marker_index: int) -> List[Tuple[str, int, int]]:
     frame_start = pose_marker.frame
-    sequence_name = pose_marker.name
+    if pose_marker_index + 1 < len(pose_markers):
-    if pose_marker.name.startswith('!'):
-        # If the pose marker name starts with an exclamation mark, only export the first frame.
-        frame_end = frame_start
-        sequence_name = sequence_name[1:]
-    elif pose_marker_index + 1 < len(pose_markers):
         frame_end = pose_markers[pose_marker_index + 1].frame
     else:
         frame_end = int(action.frame_range[1])
-    return get_sequences_from_name_and_frame_range(sequence_name, frame_start, frame_end)
+    return get_sequences_from_name_and_frame_range(pose_marker.name, frame_start, frame_end)
 
 
 def get_visible_sequences(pg: PSA_PG_export, sequences) -> List[PSA_PG_export_action_list_item]:
@@ -396,8 +391,6 @@ class PSA_OT_export(Operator, ExportHelper):
                 export_sequence.nla_state.frame_start = nla_strip_item.frame_start
                 export_sequence.nla_state.frame_end = nla_strip_item.frame_end
                 export_sequence.fps = get_sequence_fps(context, pg.fps_source, pg.fps_custom, [nla_strip_item.action])
-                export_sequence.compression_ratio = nla_strip_item.action.psa_export.compression_ratio
-                export_sequence.key_quota = nla_strip_item.action.psa_export.key_quota
                 export_sequences.append(export_sequence)
         else:
             raise ValueError(f'Unhandled sequence source: {pg.sequence_source}')

io_scene_psk_psa/psa/export/properties.py

@@ -7,7 +7,7 @@ from bpy.props import BoolProperty, PointerProperty, EnumProperty, FloatProperty
     StringProperty
 from bpy.types import PropertyGroup, Object, Action, AnimData, Context
 
-from ...shared.types import PSX_PG_bone_collection_list_item
+from ...types import PSX_PG_bone_collection_list_item
 
 
 def psa_export_property_group_animation_data_override_poll(_context, obj):
@@ -44,13 +44,12 @@ class PSA_PG_export_nla_strip_list_item(PropertyGroup):
 
 def nla_track_update_cb(self: 'PSA_PG_export', context: Context) -> None:
     self.nla_strip_list.clear()
+    if context.object is None or context.object.animation_data is None:
+        return
     match = re.match(r'^(\d+).+$', self.nla_track)
     self.nla_track_index = int(match.group(1)) if match else -1
     if self.nla_track_index >= 0:
-        animation_data = get_animation_data(self, context)
+        nla_track = context.object.animation_data.nla_tracks[self.nla_track_index]
-        if animation_data is None:
-            return
-        nla_track = animation_data.nla_tracks[self.nla_track_index]
         for nla_strip in nla_track.strips:
             strip: PSA_PG_export_nla_strip_list_item = self.nla_strip_list.add()
             strip.action = nla_strip.action

io_scene_psk_psa/psa/import_/operators.py

@@ -153,6 +153,7 @@ class PSA_OT_import(Operator, ImportHelper):
         options.should_overwrite = pg.should_overwrite
         options.should_write_metadata = pg.should_write_metadata
         options.should_write_keyframes = pg.should_write_keyframes
+        options.should_write_scale_keys = pg.should_write_scale_keys
         options.should_convert_to_samples = pg.should_convert_to_samples
         options.bone_mapping_mode = pg.bone_mapping_mode
         options.fps_source = pg.fps_source
@@ -233,6 +234,7 @@ class PSA_OT_import(Operator, ImportHelper):
             col.use_property_decorate = False
             col.prop(pg, 'should_write_keyframes')
             col.prop(pg, 'should_write_metadata')
+            col.prop(pg, 'should_write_scale_keys')
 
             if pg.should_write_keyframes:
                 col = col.column(heading='Keyframes')

io_scene_psk_psa/psa/import_/properties.py

@@ -47,6 +47,8 @@ class PSA_PG_import(PropertyGroup):
                                    description='If an action with a matching name already exists, the existing action '
                                                'will have it\'s data overwritten instead of a new action being created')
     should_write_keyframes: BoolProperty(default=True, name='Keyframes', options=empty_set)
+    should_write_scale_keys: BoolProperty(default=True, name='Scale Keys', options=empty_set, description=
+                                        'Import scale keys, if available')
     should_write_metadata: BoolProperty(default=True, name='Metadata', options=empty_set,
                                         description='Additional data will be written to the custom properties of the '
                                                     'Action (e.g., frame rate)')
@@ -71,8 +73,7 @@ class PSA_PG_import(PropertyGroup):
             ('EXACT', 'Exact', 'Bone names must match exactly.', 'EXACT', 0),
             ('CASE_INSENSITIVE', 'Case Insensitive', 'Bones names must match, ignoring case (e.g., the bone PSA bone '
              '\'root\' can be mapped to the armature bone \'Root\')', 'CASE_INSENSITIVE', 1),
-        ),
+        )
-        default='CASE_INSENSITIVE'
     )
     fps_source: EnumProperty(name='FPS Source', items=(
         ('SEQUENCE', 'Sequence', 'The sequence frame rate matches the original frame rate', 'ACTION', 0),
@@ -89,20 +90,6 @@ class PSA_PG_import(PropertyGroup):
         soft_max=60.0,
         step=100,
     )
-    compression_ratio_source: EnumProperty(name='Compression Ratio Source', items=(
-        ('ACTION', 'Action', 'The compression ratio is sourced from the action metadata', 'ACTION', 0),
-        ('CUSTOM', 'Custom', 'The compression ratio is set to a custom value', 1),
-    ))
-    compression_ratio_custom: FloatProperty(
-        default=1.0,
-        name='Custom Compression Ratio',
-        description='The compression ratio to apply to the imported sequences',
-        options=empty_set,
-        min=0.0,
-        soft_min=0.0,
-        soft_max=1.0,
-        step=0.0625,
-    )
 
 
 def filter_sequences(pg: PSA_PG_import, sequences) -> List[int]:

io_scene_psk_psa/psa/import_/ui.py

@@ -4,7 +4,7 @@ from bpy.types import UIList
 from .properties import filter_sequences
 
 
-class PSA_UL_sequences_mixin(UIList):
+class PSA_UL_sequences(UIList):
     def draw_item(self, context, layout, data, item, icon, active_data, active_property, index, flt_flag):
         row = layout.row(align=True)
         split = row.split(align=True, factor=0.75)
@@ -30,15 +30,11 @@ class PSA_UL_sequences_mixin(UIList):
         return flt_flags, flt_neworder
 
 
-class PSA_UL_sequences(PSA_UL_sequences_mixin):
+class PSA_UL_import_sequences(PSA_UL_sequences, UIList):
     pass
 
 
-class PSA_UL_import_sequences(PSA_UL_sequences_mixin):
+class PSA_UL_import_actions(PSA_UL_sequences, UIList):
-    pass
-
-
-class PSA_UL_import_actions(PSA_UL_sequences_mixin):
     pass
 
 

io_scene_psk_psa/psa/importer.py

@@ -1,5 +1,5 @@
 import typing
-from typing import List, Optional
+from typing import List, Optional, Iterable
 
 import bpy
 import numpy as np
@@ -19,6 +19,7 @@ class PsaImportOptions(object):
         self.should_overwrite = False
         self.should_write_keyframes = True
         self.should_write_metadata = True
+        self.should_write_scale_keys = True
         self.action_name_prefix = ''
         self.should_convert_to_samples = False
         self.bone_mapping_mode = 'CASE_INSENSITIVE'
@@ -38,9 +39,10 @@ class ImportBone(object):
         self.original_rotation: Quaternion = Quaternion()
         self.post_rotation: Quaternion = Quaternion()
         self.fcurves: List[FCurve] = []
+        self.scale_fcurves: List[FCurve] = []
 
 
-def _calculate_fcurve_data(import_bone: ImportBone, key_data: typing.Iterable[float]):
+def _calculate_fcurve_data(import_bone: ImportBone, key_data: Iterable[float]):
     # Convert world-space transforms to local-space transforms.
     key_rotation = Quaternion(key_data[0:4])
     key_location = Vector(key_data[4:])
@@ -143,7 +145,7 @@ def import_psa(context: Context, psa_reader: PsaReader, armature_object: Object,
         if armature_bone_index is not None:
             # Ensure that no other PSA bone has been mapped to this armature bone yet.
             if armature_bone_index not in armature_to_psa_bone_indices:
-                psa_to_armature_bone_indices[psa_bone_index] = armature_bone_index
+                psa_to_armature_bone_indices[psa_bone_index] = armature_bone_names.index(psa_bone_name)
                 armature_to_psa_bone_indices[armature_bone_index] = psa_bone_index
             else:
                 # This armature bone has already been mapped to a PSA bone.
@@ -172,7 +174,7 @@ def import_psa(context: Context, psa_reader: PsaReader, armature_object: Object,
 
     # Create intermediate bone data for import operations.
     import_bones = []
-    psa_bone_names_to_import_bones = dict()
+    import_bones_dict = dict()
 
     for (psa_bone_index, psa_bone), psa_bone_name in zip(enumerate(psa_reader.bones), psa_bone_names):
         if psa_bone_index not in psa_to_armature_bone_indices:
@@ -182,22 +184,17 @@ def import_psa(context: Context, psa_reader: PsaReader, armature_object: Object,
         import_bone = ImportBone(psa_bone)
         import_bone.armature_bone = armature_data.bones[psa_bone_name]
         import_bone.pose_bone = armature_object.pose.bones[psa_bone_name]
-        psa_bone_names_to_import_bones[psa_bone_name] = import_bone
+        import_bones_dict[psa_bone_name] = import_bone
         import_bones.append(import_bone)
 
-    bones_with_missing_parents = []
-
     for import_bone in filter(lambda x: x is not None, import_bones):
         armature_bone = import_bone.armature_bone
-        has_parent = armature_bone.parent is not None
+
-        if has_parent:
+        if armature_bone.parent is not None and armature_bone.parent.name in psa_bone_names:
-            if armature_bone.parent.name in psa_bone_names:
+            import_bone.parent = import_bones_dict[armature_bone.parent.name]
-                import_bone.parent = psa_bone_names_to_import_bones[armature_bone.parent.name]
+
-            else:
-                # Add a warning if the parent bone is not in the PSA.
-                bones_with_missing_parents.append(armature_bone)
         # Calculate the original location & rotation of each bone (in world-space maybe?)
-        if has_parent:
+        if import_bone.parent is not None:
             import_bone.original_location = armature_bone.matrix_local.translation - armature_bone.parent.matrix_local.translation
             import_bone.original_location.rotate(armature_bone.parent.matrix_local.to_quaternion().conjugated())
             import_bone.original_rotation = armature_bone.matrix_local.to_quaternion()
@@ -209,12 +206,6 @@ def import_psa(context: Context, psa_reader: PsaReader, armature_object: Object,
 
         import_bone.post_rotation = import_bone.original_rotation.conjugated()
 
-    # Warn about bones with missing parents.
-    if len(bones_with_missing_parents) > 0:
-        count = len(bones_with_missing_parents)
-        message = f'{count} bone(s) have parents that are not present in the PSA:\n' + str([x.name for x in bones_with_missing_parents])
-        result.warnings.append(message)
-
     context.window_manager.progress_begin(0, len(sequences))
 
     # Create and populate the data for new sequences.
@@ -268,6 +259,14 @@ def import_psa(context: Context, psa_reader: PsaReader, armature_object: Object,
                     action.fcurves.new(location_data_path, index=2, action_group=pose_bone.name) if add_location_fcurves else None,  # Lz
                 ]
                 
+                if options.should_write_scale_keys:
+                    scale_data_path = pose_bone.path_from_id('scale')
+                    import_bone.fcurves += [
+                        action.fcurves.new(scale_data_path, index=0, action_group=pose_bone.name),  # Sx
+                        action.fcurves.new(scale_data_path, index=1, action_group=pose_bone.name),  # Sy
+                        action.fcurves.new(scale_data_path, index=2, action_group=pose_bone.name),  # Sz
+                    ]
+
             # Read the sequence data matrix from the PSA.
             sequence_data_matrix = psa_reader.read_sequence_data_matrix(sequence_name)
 
@@ -304,6 +303,22 @@ def import_psa(context: Context, psa_reader: PsaReader, armature_object: Object,
                     for fcurve_keyframe in fcurve.keyframe_points:
                         fcurve_keyframe.interpolation = 'LINEAR'
 
+            if options.should_write_scale_keys:
+                sequence_scale_data_matrix = psa_reader.read_sequence_scale_key_data_matrix(sequence_name)
+                # Write the scale keys out.
+                fcurve_data = numpy.zeros(2 * sequence.frame_count, dtype=float)
+                # Populate the keyframe time data.
+                fcurve_data[0::2] = [x * keyframe_time_dilation for x in range(sequence.frame_count)]
+                for bone_index, import_bone in enumerate(import_bones):
+                    if import_bone is None:
+                        continue
+                    for fcurve_index, fcurve in enumerate(import_bone.scale_fcurves):
+                        fcurve_data[1::2] = sequence_scale_data_matrix[:, bone_index, fcurve_index]
+                        fcurve.keyframe_points.add(sequence.frame_count)
+                        fcurve.keyframe_points.foreach_set('co', fcurve_data)
+                        for fcurve_keyframe in fcurve.keyframe_points:
+                            fcurve_keyframe.interpolation = 'LINEAR'
+
             if options.should_convert_to_samples:
                 # Bake the curve to samples.
                 for fcurve in action.fcurves:

io_scene_psk_psa/psa/reader.py

@@ -1,4 +1,5 @@
 import ctypes
+from typing import Optional
 
 import numpy as np
 
@@ -31,6 +32,7 @@ class PsaReader(object):
 
     def __init__(self, path):
         self.keys_data_offset: int = 0
+        self.scale_keys_data_offset: Optional[int] = None
         self.fp = open(path, 'rb')
         self.psa: Psa = self._read(self.fp)
 
@@ -64,9 +66,9 @@ class PsaReader(object):
         Reads and returns the key data for a sequence.
 
         @param sequence_name: The name of the sequence.
-        @return: A list of Psa.Keys.
+        @return: A list of keys for the sequence.
         """
-        # Set the file reader to the beginning of the keys data
+        # Set the file reader to the beginning of the key data.
         sequence = self.psa.sequences[sequence_name]
         data_size = sizeof(Psa.Key)
         bone_count = len(self.psa.bones)
@@ -82,6 +84,49 @@ class PsaReader(object):
             offset += data_size
         return keys
 
+    def read_sequence_scale_key_data_matrix(self, sequence_name: str) -> np.ndarray:
+        """
+        Reads and returns the scale key data matrix for the given sequence.
+        @param sequence_name: The name of the sequence.
+        @return: An FxBx3 matrix where F is the number of frames, B is the number of bones.
+        """
+        sequence = self.psa.sequences[sequence_name]
+        scale_keys = self.read_sequence_scale_keys(sequence_name)
+        bone_count = len(self.bones)
+        matrix_size = sequence.frame_count, bone_count, 3
+        matrix = np.ones(matrix_size)
+        keys_iter = iter(scale_keys)
+        for frame_index in range(sequence.frame_count):
+            for bone_index in range(bone_count):
+                matrix[frame_index, bone_index, :] = iter(next(keys_iter).scale)
+        return matrix
+
+    def read_sequence_scale_keys(self, sequence_name: str) -> List[Psa.ScaleKey]:
+        """
+        Reads and returns the scale key data for a sequence.
+
+        Throws a RuntimeError exception if the sequence does not contain scale keys (use Psa.has_scale_keys to check).
+        @param sequence_name: The name of the sequence.
+        @return: A list of scale keys for the sequence.
+        """
+        if not self.psa.has_scale_keys:
+            raise RuntimeError('The PSA file does not contain scale keys.')
+        # Set the file reader to the beginning of the key data.
+        sequence = self.psa.sequences[sequence_name]
+        data_size = sizeof(Psa.ScaleKey)
+        bone_count = len(self.psa.bones)
+        buffer_length = data_size * bone_count * sequence.frame_count
+        sequence_scale_keys_offset = self.keys_data_offset + (sequence.frame_start_index * bone_count * data_size)
+        self.fp.seek(sequence_scale_keys_offset, 0)
+        buffer = self.fp.read(buffer_length)
+        offset = 0
+        scale_keys = []
+        for _ in range(sequence.frame_count * bone_count):
+            scale_key = Psa.ScaleKey.from_buffer_copy(buffer, offset)
+            scale_keys.append(scale_key)
+            offset += data_size
+        return scale_keys
+
     @staticmethod
     def _read_types(fp, data_class, section: Section, data):
         buffer_length = section.data_size * section.data_count
@@ -111,6 +156,10 @@ class PsaReader(object):
                 # Skip keys on this pass. We will keep this file open and read from it as needed.
                 self.keys_data_offset = fp.tell()
                 fp.seek(section.data_size * section.data_count, 1)
+            elif section.name == b'SCALEKEYS':
+                # Skip scale keys on this pass. We will keep this file open and read from it as needed.
+                self.scale_keys_data_offset = fp.tell()
+                fp.seek(section.data_size * section.data_count, 1)
             else:
                 fp.seek(section.data_size * section.data_count, 1)
                 print(f'Unrecognized section in PSA: "{section.name}"')

io_scene_psk_psa/psa/writer.py

@@ -2,7 +2,7 @@ from ctypes import Structure, sizeof
 from typing import Type
 
 from .data import Psa
-from ..shared.data import Section
+from ..data import Section
 
 
 def write_section(fp, name: bytes, data_type: Type[Structure] = None, data: list = None):

io_scene_psk_psa/psk/builder.py

@@ -7,7 +7,7 @@ from bpy.types import Armature, Material
 
 from .data import *
 from .properties import triangle_type_and_bit_flags_to_poly_flags
-from ..shared.helpers import *
+from ..helpers import *
 
 
 class PskInputObjects(object):
@@ -28,8 +28,10 @@ class PskBuildOptions(object):
 def get_psk_input_objects(context) -> PskInputObjects:
     input_objects = PskInputObjects()
     for selected_object in context.view_layer.objects.selected:
-        if selected_object.type == 'MESH':
+        if selected_object.type != 'MESH':
-            input_objects.mesh_objects.append(selected_object)
+            raise RuntimeError(f'Selected object "{selected_object.name}" is not a mesh')
+
+    input_objects.mesh_objects = context.view_layer.objects.selected
 
     if len(input_objects.mesh_objects) == 0:
         raise RuntimeError('At least one mesh must be selected')

io_scene_psk_psa/psk/data.py

@@ -1,6 +1,6 @@
 from typing import List
 
-from ..shared.data import *
+from ..data import *
 
 
 class Psk(object):

io_scene_psk_psa/psk/export/operators.py

@@ -4,7 +4,7 @@ from bpy_extras.io_utils import ExportHelper
 
 from ..builder import build_psk, PskBuildOptions, get_psk_input_objects
 from ..writer import write_psk
-from ...shared.helpers import populate_bone_collection_list
+from ...helpers import populate_bone_collection_list
 
 
 def is_bone_filter_mode_item_available(context, identifier):
@@ -121,17 +121,15 @@ class PSK_OT_export(Operator, ExportHelper):
         pg = getattr(context.scene, 'psk_export')
 
         # MESH
-        mesh_header, mesh_panel = layout.panel('01_mesh', default_closed=False)
+        box = layout.box()
-        mesh_header.label(text='Mesh', icon='MESH_DATA')
+        box.label(text='Mesh', icon='MESH_DATA')
-        if mesh_panel:
+        box.prop(pg, 'use_raw_mesh_data')
-            mesh_panel.prop(pg, 'use_raw_mesh_data')
 
         # BONES
-        bones_header, bones_panel = layout.panel('02_bones', default_closed=False)
+        box = layout.box()
-        bones_header.label(text='Bones', icon='BONE_DATA')
+        box.label(text='Bones', icon='BONE_DATA')
-        if bones_panel:
         bone_filter_mode_items = pg.bl_rna.properties['bone_filter_mode'].enum_items_static
-            row = bones_panel.row(align=True)
+        row = box.row(align=True)
         for item in bone_filter_mode_items:
             identifier = item.identifier
             item_layout = row.row(align=True)
@@ -139,17 +137,16 @@ class PSK_OT_export(Operator, ExportHelper):
             item_layout.enabled = is_bone_filter_mode_item_available(context, identifier)
 
         if pg.bone_filter_mode == 'BONE_COLLECTIONS':
-                row = bones_panel.row()
+            row = box.row()
             rows = max(3, min(len(pg.bone_collection_list), 10))
             row.template_list('PSX_UL_bone_collection_list', '', pg, 'bone_collection_list', pg, 'bone_collection_list_index', rows=rows)
 
-            bones_panel.prop(pg, 'should_enforce_bone_name_restrictions')
+        box.prop(pg, 'should_enforce_bone_name_restrictions')
 
         # MATERIALS
-        materials_header, materials_panel = layout.panel('03_materials', default_closed=False)
+        box = layout.box()
-        materials_header.label(text='Materials', icon='MATERIAL')
+        box.label(text='Materials', icon='MATERIAL')
-        if materials_panel:
+        row = box.row()
-            row = materials_panel.row()
         rows = max(3, min(len(pg.bone_collection_list), 10))
         row.template_list('PSK_UL_materials', '', pg, 'material_list', pg, 'material_list_index', rows=rows)
         col = row.column(align=True)

io_scene_psk_psa/psk/export/properties.py

@@ -1,7 +1,7 @@
 from bpy.props import EnumProperty, CollectionProperty, IntProperty, BoolProperty, PointerProperty
 from bpy.types import PropertyGroup, Material
 
-from ...shared.types import PSX_PG_bone_collection_list_item
+from ...types import PSX_PG_bone_collection_list_item
 
 empty_set = set()
 

io_scene_psk_psa/psk/importer.py

@@ -8,7 +8,7 @@ from mathutils import Quaternion, Vector, Matrix
 
 from .data import Psk
 from .properties import poly_flags_to_triangle_type_and_bit_flags
-from ..shared.helpers import rgb_to_srgb, is_bdk_addon_loaded
+from ..helpers import rgb_to_srgb, is_bdk_addon_loaded
 
 
 class PskImportOptions:
@@ -171,7 +171,7 @@ def import_psk(psk: Psk, context, options: PskImportOptions) -> PskImportResult:
 
         # TEXTURE COORDINATES
         uv_layer_data_index = 0
-        uv_layer = mesh_data.uv_layers.new(name='UVMap')
+        uv_layer = mesh_data.uv_layers.new(name='VTXW0000')
         for face_index, face in enumerate(psk.faces):
             if face_index in invalid_face_indices:
                 continue
@@ -231,6 +231,7 @@ def import_psk(psk: Psk, context, options: PskImportOptions) -> PskImportResult:
             for vertex_normal in psk.vertex_normals:
                 normals.append(tuple(vertex_normal))
             mesh_data.normals_split_custom_set_from_vertices(normals)
+            mesh_data.use_auto_smooth = True
         else:
             mesh_data.shade_smooth()
 

io_scene_psk_psa/psk/writer.py

@@ -2,7 +2,7 @@ from ctypes import Structure, sizeof
 from typing import Type
 
 from .data import Psk
-from ..shared.data import Section, Vector3
+from ..data import Section, Vector3
 
 MAX_WEDGE_COUNT = 65536
 MAX_POINT_COUNT = 4294967296