Update main.yml

Create main.yml
2024-06-09 12:04:57 -07:00 · 2024-06-08 16:41:03 -07:00 · 2024-06-08 16:35:52 -07:00 · 2024-06-07 23:05:58 -07:00 · 2024-06-06 23:53:05 -07:00 · 2024-06-06 23:52:25 -07:00
29 changed files with 1042 additions and 270 deletions
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -0,0 +1,32 @@
+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
--- a/674
+++ b/674
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
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+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
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+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
--- a/README.md
+++ b/README.md
@@ -5,11 +5,14 @@

 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.

-## Compatibility
+This software is licensed under the [GPLv3](https://www.gnu.org/licenses/gpl-3.0.html) license.
+
+# Compatibility

 | Blender Version | Addon Version | Long Term Support |
-|--------------------------------------------------------------|--------------------------------------------------------------------------------|-------------------|
-| 4.0+                                                         | [latest](https://github.com/DarklightGames/io_scene_psk_psa/releases/latest)   | TBD               |
+|-|-|-|
+| [4.1](https://www.blender.org/download/releases/4-1/) | [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/) | [5.0.6](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 |

--- a/build.py
+++ b/build.py
@@ -1,41 +0,0 @@
-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()
--- a/io_scene_psk_psa/init.py
+++ b/io_scene_psk_psa/init.py
@@ -1,23 +1,11 @@
 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(psx_data)
-    importlib.reload(psx_helpers)
-    importlib.reload(psx_types)
+    importlib.reload(shared_data)
+    importlib.reload(shared_helpers)
+    importlib.reload(shared_types)

    importlib.reload(psk_data)
    importlib.reload(psk_reader)
@@ -44,39 +32,30 @@ if 'bpy' in locals():
    importlib.reload(psa_import_operators)
    importlib.reload(psa_import_ui)
 else:
-    # if i remove this line, it can be enabled just fine
-    from . import data as psx_data
-    from . import helpers as psx_helpers
-    from . import types as psx_types
-    from .psk import data as psk_data
-    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 .shared import data as shared_data, types as shared_types, helpers as shared_helpers
+    from .psk import data as psk_data, builder as psk_builder, writer as psk_writer, \
+    importer as psk_importer, properties as psk_properties
+    from .psk import reader as psk_reader, ui as psk_ui
+    from .psk.export import properties as psk_export_properties, ui as psk_export_ui, \
+        operators as psk_export_operators
    from .psk.import_ import operators as psk_import_operators

-    from .psa import data as psa_data
-    from .psa import config as psa_config
-    from .psa import reader as psa_reader
-    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 config as psa_config, data as psa_data, writer as psa_writer, reader as psa_reader, \
+        builder as psa_builder, importer as psa_importer
+    from .psa.export import properties as psa_export_properties, ui as psa_export_ui, \
+        operators as psa_export_operators
    from .psa.import_ import operators as psa_import_operators
-    from .psa.import_ import ui as psa_import_ui
+    from .psa.import_ import ui as psa_import_ui, properties as psa_import_properties

 import bpy
 from bpy.props import PointerProperty

-classes = psx_types.classes +\
+# TODO: just here so that it's not unreferenced and removed on save.
+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 +\
@@ -118,7 +97,7 @@ 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=psx_types.PSX_PG_action_export)
+    bpy.types.Action.psa_export = PointerProperty(type=shared_types.PSX_PG_action_export)


 def unregister():
--- a/io_scene_psk_psa/blender_manifest.toml
+++ b/io_scene_psk_psa/blender_manifest.toml
@@ -0,0 +1,24 @@
+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",
+]
--- a/io_scene_psk_psa/psa/builder.py
+++ b/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 ..helpers import *
+from ..shared.helpers import *


 class PsaBuildSequence:
--- a/io_scene_psk_psa/psa/config.py
+++ b/io_scene_psk_psa/psa/config.py
@@ -14,7 +14,7 @@ class PsaConfig:


 def _load_config_file(file_path: str) -> ConfigParser:
-    '''
+    """
    UEViewer exports a dialect of INI files that is not compatible with Python's ConfigParser.
    Specifically, it allows values in this format:

@@ -24,7 +24,7 @@ def _load_config_file(file_path: str) -> ConfigParser:

    This is not allowed in Python's ConfigParser, which requires a '=' character after each key name.
    To work around this, we'll modify the file to add the '=' character after each key name if it is missing.
-    '''
+    """
    with open(file_path, 'r') as f:
        lines = f.read().split('\n')

@@ -41,7 +41,7 @@ def _load_config_file(file_path: str) -> ConfigParser:
 def _get_bone_flags_from_value(value: str) -> int:
    match value:
        case 'all':
-            return (REMOVE_TRACK_LOCATION | REMOVE_TRACK_ROTATION)
+            return REMOVE_TRACK_LOCATION | REMOVE_TRACK_ROTATION
        case 'trans':
            return REMOVE_TRACK_LOCATION
        case 'rot':
--- a/io_scene_psk_psa/psa/data.py
+++ b/io_scene_psk_psa/psa/data.py
@@ -2,7 +2,7 @@ import typing
 from collections import OrderedDict
 from typing import List

-from ..data import *
+from ..shared.data import *

 '''
 Note that keys are not stored within the Psa object.
--- a/io_scene_psk_psa/psa/export/operators.py
+++ b/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 ...helpers import populate_bone_collection_list, get_nla_strips_in_frame_range
+from ...shared.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_marker(action, pose_markers, pose_marker, pose_marker_index):
+            for (name, frame_start, frame_end) in get_sequences_from_action_pose_markers(action, pose_markers, pose_marker, pose_marker_index):
                item = pg.action_list.add()
                item.action = action
                item.name = name
@@ -91,14 +91,15 @@ def update_actions_and_timeline_markers(context: Context, armature: Armature):


 def get_sequence_fps(context: Context, fps_source: str, fps_custom: float, actions: Iterable[Action]) -> float:
-    if fps_source == 'SCENE':
+    match fps_source:
+        case 'SCENE':
            return context.scene.render.fps
-    elif fps_source == 'CUSTOM':
+        case 'CUSTOM':
            return fps_custom
-    elif fps_source == 'ACTION_METADATA':
+        case 'ACTION_METADATA':
            # Get the minimum value of action metadata FPS values.
            return min([action.psa_export.fps for action in actions])
-    else:
+        case _:
            raise RuntimeError(f'Invalid FPS source "{fps_source}"')


@@ -187,13 +188,18 @@ 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_marker(action: Action, pose_markers: List[TimelineMarker], pose_marker: TimelineMarker, pose_marker_index: int) -> List[Tuple[str, int, int]]:
+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]]:
    frame_start = pose_marker.frame
-    if pose_marker_index + 1 < len(pose_markers):
+    sequence_name = pose_marker.name
+    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(pose_marker.name, frame_start, frame_end)
+    return get_sequences_from_name_and_frame_range(sequence_name, frame_start, frame_end)


 def get_visible_sequences(pg: PSA_PG_export, sequences) -> List[PSA_PG_export_action_list_item]:
@@ -390,6 +396,8 @@ 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}')
--- a/io_scene_psk_psa/psa/export/properties.py
+++ b/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 ...types import PSX_PG_bone_collection_list_item
+from ...shared.types import PSX_PG_bone_collection_list_item


 def psa_export_property_group_animation_data_override_poll(_context, obj):
@@ -44,12 +44,13 @@ 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:
-        nla_track = context.object.animation_data.nla_tracks[self.nla_track_index]
+        animation_data = get_animation_data(self, context)
+        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
--- a/io_scene_psk_psa/psa/export/ui.py
+++ b/io_scene_psk_psa/psa/export/ui.py
@@ -32,7 +32,6 @@ class PSA_UL_export_sequences(UIList):
        subrow = row.row(align=True)
        subrow.prop(pg, 'sequence_filter_name', text='')
        subrow.prop(pg, 'sequence_use_filter_invert', text='', icon='ARROW_LEFTRIGHT')
-        # subrow.prop(pg, 'sequence_use_filter_sort_reverse', text='', icon='SORT_ASC')

        if pg.sequence_source == 'ACTIONS':
            subrow = row.row(align=True)
@@ -44,7 +43,6 @@ class PSA_UL_export_sequences(UIList):
        pg = getattr(context.scene, 'psa_export')
        actions = getattr(data, prop)
        flt_flags = filter_sequences(pg, actions)
-        # flt_neworder = bpy.types.UI_UL_list.sort_items_by_name(actions, 'name')
        flt_neworder = list(range(len(actions)))
        return flt_flags, flt_neworder

--- a/io_scene_psk_psa/psa/import_/operators.py
+++ b/io_scene_psk_psa/psa/import_/operators.py
@@ -2,7 +2,7 @@ import os
 from pathlib import Path

 from bpy.props import StringProperty
-from bpy.types import Operator, Event, Context
+from bpy.types import Operator, Event, Context, FileHandler
 from bpy_extras.io_utils import ImportHelper

 from .properties import get_visible_sequences
@@ -89,23 +89,6 @@ class PSA_OT_import_sequences_deselect_all(Operator):
        return {'FINISHED'}


-class PSA_OT_import_select_file(Operator):
-    bl_idname = 'psa_import.select_file'
-    bl_label = 'Select'
-    bl_options = {'INTERNAL'}
-    bl_description = 'Select a PSA file from which to import animations'
-    filepath: StringProperty(subtype='FILE_PATH')
-    filter_glob: StringProperty(default='*.psa', options={'HIDDEN'})
-
-    def execute(self, context):
-        getattr(context.scene, 'psa_import').psa_file_path = self.filepath
-        return {'FINISHED'}
-
-    def invoke(self, context, event):
-        context.window_manager.fileselect_add(self)
-        return {'RUNNING_MODAL'}
-
-
 def load_psa_file(context, filepath: str):
    pg = context.scene.psa_import
    pg.sequence_list.clear()
@@ -207,18 +190,18 @@ class PSA_OT_import(Operator, ImportHelper):
        layout = self.layout
        pg = getattr(context.scene, 'psa_import')

+        sequences_header, sequences_panel = layout.panel('sequences_panel_id', default_closed=False)
+        sequences_header.label(text='Sequences')
+
+        if sequences_panel:
            if pg.psa_error:
-            row = layout.row()
+                row = sequences_panel.row()
                row.label(text='Select a PSA file', icon='ERROR')
            else:
-            box = layout.box()
-
-            box.label(text=f'Sequences ({len(pg.sequence_list)})', icon='ARMATURE_DATA')
-
                # Select buttons.
                rows = max(3, min(len(pg.sequence_list), 10))

-            row = box.row()
+                row = sequences_panel.row()
                col = row.column()

                row2 = col.row(align=True)
@@ -230,44 +213,59 @@ class PSA_OT_import(Operator, ImportHelper):
                col = col.row()
                col.template_list('PSA_UL_import_sequences', '', pg, 'sequence_list', pg, 'sequence_list_index', rows=rows)

-        col = layout.column(heading='')
+            col = sequences_panel.column(heading='')
            col.use_property_split = True
            col.use_property_decorate = False
+            col.prop(pg, 'fps_source')
+            if pg.fps_source == 'CUSTOM':
+                col.prop(pg, 'fps_custom')
            col.prop(pg, 'should_overwrite')
+            col.prop(pg, 'should_use_action_name_prefix')
+            if pg.should_use_action_name_prefix:
+                col.prop(pg, 'action_name_prefix')

-        col = layout.column(heading='Write')
+        data_header, data_panel = layout.panel('data_panel_id', default_closed=False)
+        data_header.label(text='Data')
+
+        if data_panel:
+            col = data_panel.column(heading='Write')
            col.use_property_split = True
            col.use_property_decorate = False
            col.prop(pg, 'should_write_keyframes')
            col.prop(pg, 'should_write_metadata')

-        col = layout.column()
+            if pg.should_write_keyframes:
+                col = col.column(heading='Keyframes')
+                col.use_property_split = True
+                col.use_property_decorate = False
+                col.prop(pg, 'should_convert_to_samples')
+
+        advanced_header, advanced_panel = layout.panel('advanced_panel_id', default_closed=True)
+        advanced_header.label(text='Advanced')
+
+        if advanced_panel:
+            col = advanced_panel.column()
            col.use_property_split = True
            col.use_property_decorate = False
            col.prop(pg, 'bone_mapping_mode')

-        if pg.should_write_keyframes:
-            col = layout.column(heading='Keyframes')
-            col.use_property_split = True
-            col.use_property_decorate = False
-            col.prop(pg, 'should_convert_to_samples')
-            col.separator()
-            # FPS
-            col.prop(pg, 'fps_source')
-            if pg.fps_source == 'CUSTOM':
-                col.prop(pg, 'fps_custom')
-
-        col = layout.column(heading='Options')
+            col = advanced_panel.column(heading='Options')
            col.use_property_split = True
            col.use_property_decorate = False
            col.prop(pg, 'should_use_fake_user')
            col.prop(pg, 'should_stash')
            col.prop(pg, 'should_use_config_file')

-        col.prop(pg, 'should_use_action_name_prefix')

-        if pg.should_use_action_name_prefix:
-            col.prop(pg, 'action_name_prefix')
+class PSA_FH_import(FileHandler):
+    bl_idname = 'PSA_FH_import'
+    bl_label = 'File handler for Unreal PSA import'
+    bl_import_operator = 'psa_import.import'
+    bl_file_extensions = '.psa'
+
+    @classmethod
+    def poll_drop(cls, context: Context):
+        return context.area and context.area.type == 'VIEW_3D'


 classes = (
@@ -275,5 +273,5 @@ classes = (
    PSA_OT_import_sequences_deselect_all,
    PSA_OT_import_sequences_from_text,
    PSA_OT_import,
-    PSA_OT_import_select_file,
+    PSA_FH_import,
 )
--- a/io_scene_psk_psa/psa/import_/properties.py
+++ b/io_scene_psk_psa/psa/import_/properties.py
@@ -71,23 +71,38 @@ 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),
-        ('SCENE', 'Scene', 'The sequence frame rate dilates to match that of the scene', 'SCENE_DATA', 1),
-        ('CUSTOM', 'Custom', 'The sequence frame rate dilates to match a custom frame rate', 2),
+        ('SCENE', 'Scene', 'The sequence is resampled to the frame rate of the scene', 'SCENE_DATA', 1),
+        ('CUSTOM', 'Custom', 'The sequence is resampled to a custom frame rate', 2),
    ))
    fps_custom: FloatProperty(
        default=30.0,
        name='Custom FPS',
-        description='The frame rate to which the imported actions will be converted',
+        description='The frame rate to which the imported sequences will be resampled to',
        options=empty_set,
        min=1.0,
        soft_min=1.0,
        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]:
--- a/io_scene_psk_psa/psa/import_/ui.py
+++ b/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(UIList):
+class PSA_UL_sequences_mixin(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)
@@ -30,11 +30,15 @@ class PSA_UL_sequences(UIList):
        return flt_flags, flt_neworder


-class PSA_UL_import_sequences(PSA_UL_sequences, UIList):
+class PSA_UL_sequences(PSA_UL_sequences_mixin):
    pass


-class PSA_UL_import_actions(PSA_UL_sequences, UIList):
+class PSA_UL_import_sequences(PSA_UL_sequences_mixin):
+    pass
+
+
+class PSA_UL_import_actions(PSA_UL_sequences_mixin):
    pass


--- a/io_scene_psk_psa/psa/importer.py
+++ b/io_scene_psk_psa/psa/importer.py
@@ -2,7 +2,7 @@ import typing
 from typing import List, Optional

 import bpy
-import numpy
+import numpy as np
 from bpy.types import FCurve, Object, Context
 from mathutils import Vector, Quaternion

@@ -46,16 +46,16 @@ def _calculate_fcurve_data(import_bone: ImportBone, key_data: typing.Iterable[fl
    key_location = Vector(key_data[4:])
    q = import_bone.post_rotation.copy()
    q.rotate(import_bone.original_rotation)
-    quat = q
+    rotation = q
    q = import_bone.post_rotation.copy()
    if import_bone.parent is None:
        q.rotate(key_rotation.conjugated())
    else:
        q.rotate(key_rotation)
-    quat.rotate(q.conjugated())
-    loc = key_location - import_bone.original_location
-    loc.rotate(import_bone.post_rotation.conjugated())
-    return quat.w, quat.x, quat.y, quat.z, loc.x, loc.y, loc.z
+    rotation.rotate(q.conjugated())
+    location = key_location - import_bone.original_location
+    location.rotate(import_bone.post_rotation.conjugated())
+    return rotation.w, rotation.x, rotation.y, rotation.z, location.x, location.y, location.z


 class PsaImportResult:
@@ -64,12 +64,12 @@ class PsaImportResult:


 def _get_armature_bone_index_for_psa_bone(psa_bone_name: str, armature_bone_names: List[str], bone_mapping_mode: str = 'EXACT') -> Optional[int]:
-    '''
+    """
    @param psa_bone_name: The name of the PSA bone.
    @param armature_bone_names: The names of the bones in the armature.
    @param bone_mapping_mode: One of 'EXACT' or 'CASE_INSENSITIVE'.
    @return: The index of the armature bone that corresponds to the given PSA bone, or None if no such bone exists.
-    '''
+    """
    for armature_bone_index, armature_bone_name in enumerate(armature_bone_names):
        if bone_mapping_mode == 'CASE_INSENSITIVE':
            if armature_bone_name.lower() == psa_bone_name.lower():
@@ -79,6 +79,51 @@ def _get_armature_bone_index_for_psa_bone(psa_bone_name: str, armature_bone_name
                return armature_bone_index
    return None

+def _get_sample_frame_times(source_frame_count: int, frame_step: float) -> typing.Iterable[float]:
+    # TODO: for correctness, we should also emit the target frame time as well (because the last frame can be a
+    #  fractional frame).
+    time = 0.0
+    while time < source_frame_count - 1:
+        yield time
+        time += frame_step
+    yield source_frame_count - 1
+
+def _resample_sequence_data_matrix(sequence_data_matrix: np.ndarray, frame_step: float = 1.0) -> np.ndarray:
+    """
+    Resamples the sequence data matrix to the target frame count.
+    @param sequence_data_matrix: FxBx7 matrix where F is the number of frames, B is the number of bones, and X is the
+    number of data elements per bone.
+    @param frame_step: The step between frames in the resampled sequence.
+    @return: The resampled sequence data matrix, or sequence_data_matrix if no resampling is necessary.
+    """
+    if frame_step == 1.0:
+        # No resampling is necessary.
+        return sequence_data_matrix
+
+    source_frame_count, bone_count = sequence_data_matrix.shape[:2]
+    sample_frame_times = list(_get_sample_frame_times(source_frame_count, frame_step))
+    target_frame_count = len(sample_frame_times)
+    resampled_sequence_data_matrix = np.zeros((target_frame_count, bone_count, 7), dtype=float)
+
+    for sample_frame_index, sample_frame_time in enumerate(sample_frame_times):
+        frame_index = int(sample_frame_time)
+        if sample_frame_time % 1.0 == 0.0:
+            # Sample time has no fractional part, so just copy the frame.
+            resampled_sequence_data_matrix[sample_frame_index, :, :] = sequence_data_matrix[frame_index, :, :]
+        else:
+            # Sample time has a fractional part, so interpolate between two frames.
+            next_frame_index = frame_index + 1
+            for bone_index in range(bone_count):
+                source_frame_1_data = sequence_data_matrix[frame_index, bone_index, :]
+                source_frame_2_data = sequence_data_matrix[next_frame_index, bone_index, :]
+                factor = sample_frame_time - frame_index
+                q = Quaternion((source_frame_1_data[:4])).slerp(Quaternion((source_frame_2_data[:4])), factor)
+                q.normalize()
+                l = Vector(source_frame_1_data[4:]).lerp(Vector(source_frame_2_data[4:]), factor)
+                resampled_sequence_data_matrix[sample_frame_index, bone_index, :] = q.w, q.x, q.y, q.z, l.x, l.y, l.z
+
+    return resampled_sequence_data_matrix
+

 def import_psa(context: Context, psa_reader: PsaReader, armature_object: Object, options: PsaImportOptions) -> PsaImportResult:
    result = PsaImportResult()
@@ -98,7 +143,7 @@ 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_names.index(psa_bone_name)
+                psa_to_armature_bone_indices[psa_bone_index] = armature_bone_index
                armature_to_psa_bone_indices[armature_bone_index] = psa_bone_index
            else:
                # This armature bone has already been mapped to a PSA bone.
@@ -127,7 +172,7 @@ def import_psa(context: Context, psa_reader: PsaReader, armature_object: Object,

    # Create intermediate bone data for import operations.
    import_bones = []
-    import_bones_dict = dict()
+    psa_bone_names_to_import_bones = 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:
@@ -137,15 +182,22 @@ 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]
-        import_bones_dict[psa_bone_name] = import_bone
+        psa_bone_names_to_import_bones[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
-        if armature_bone.parent is not None and armature_bone.parent.name in psa_bone_names:
-            import_bone.parent = import_bones_dict[armature_bone.parent.name]
+        has_parent = armature_bone.parent is not None
+        if has_parent:
+            if armature_bone.parent.name in psa_bone_names:
+                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 import_bone.parent is not None:
+        if has_parent:
            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()
@@ -153,9 +205,16 @@ def import_psa(context: Context, psa_reader: PsaReader, armature_object: Object,
            import_bone.original_rotation.conjugate()
        else:
            import_bone.original_location = armature_bone.matrix_local.translation.copy()
-            import_bone.original_rotation = armature_bone.matrix_local.to_quaternion()
+            import_bone.original_rotation = armature_bone.matrix_local.to_quaternion().conjugated()
+
        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.
@@ -186,12 +245,9 @@ def import_psa(context: Context, psa_reader: PsaReader, armature_object: Object,
            case _:
                raise ValueError(f'Unknown FPS source: {options.fps_source}')

-        keyframe_time_dilation = target_fps / sequence.fps
-
        if options.should_write_keyframes:
-            # Remove existing f-curves (replace with action.fcurves.clear() in Blender 3.2)
-            while len(action.fcurves) > 0:
-                action.fcurves.remove(action.fcurves[-1])
+            # Remove existing f-curves.
+            action.fcurves.clear()

            # Create f-curves for the rotation and location of each bone.
            for psa_bone_index, armature_bone_index in psa_to_armature_bone_indices.items():
@@ -225,19 +281,25 @@ def import_psa(context: Context, psa_reader: PsaReader, armature_object: Object,
                    # Calculate the local-space key data for the bone.
                    sequence_data_matrix[frame_index, bone_index] = _calculate_fcurve_data(import_bone, key_data)

-            # Write the keyframes out.
-            fcurve_data = numpy.zeros(2 * sequence.frame_count, dtype=float)
+            # Resample the sequence data to the target FPS.
+            # If the target frame count is the same as the source frame count, this will be a no-op.
+            resampled_sequence_data_matrix = _resample_sequence_data_matrix(sequence_data_matrix,
+                                                                            frame_step=sequence.fps / target_fps)
+
+            # Write the keyframes out.
+            # Note that the f-curve data consists of alternating time and value data.
+            target_frame_count = resampled_sequence_data_matrix.shape[0]
+            fcurve_data = np.zeros(2 * target_frame_count, dtype=float)
+            fcurve_data[0::2] = range(0, target_frame_count)

-            # 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.fcurves):
                    if fcurve is None:
                        continue
-                    fcurve_data[1::2] = sequence_data_matrix[:, bone_index, fcurve_index]
-                    fcurve.keyframe_points.add(sequence.frame_count)
+                    fcurve_data[1::2] = resampled_sequence_data_matrix[:, bone_index, fcurve_index]
+                    fcurve.keyframe_points.add(target_frame_count)
                    fcurve.keyframe_points.foreach_set('co', fcurve_data)
                    for fcurve_keyframe in fcurve.keyframe_points:
                        fcurve_keyframe.interpolation = 'LINEAR'
--- a/io_scene_psk_psa/psa/reader.py
+++ b/io_scene_psk_psa/psa/reader.py
@@ -23,11 +23,11 @@ def _try_fix_cue4parse_issue_103(sequences) -> bool:


 class PsaReader(object):
-    '''
+    """
    This class reads the sequences and bone information immediately upon instantiation and holds onto a file handle.
    The keyframe data is not read into memory upon instantiation due to its potentially very large size.
    To read the key data for a particular sequence, call :read_sequence_keys.
-    '''
+    """

    def __init__(self, path):
        self.keys_data_offset: int = 0
@@ -43,11 +43,11 @@ class PsaReader(object):
        return self.psa.sequences

    def read_sequence_data_matrix(self, sequence_name: str) -> np.ndarray:
-        '''
+        """
        Reads and returns the data matrix for the given sequence.
        @param sequence_name: The name of the sequence.
        @return: An FxBx7 matrix where F is the number of frames, B is the number of bones.
-        '''
+        """
        sequence = self.psa.sequences[sequence_name]
        keys = self.read_sequence_keys(sequence_name)
        bone_count = len(self.bones)
@@ -60,12 +60,12 @@ class PsaReader(object):
        return matrix

    def read_sequence_keys(self, sequence_name: str) -> List[Psa.Key]:
-        '''
+        """
        Reads and returns the key data for a sequence.

        @param sequence_name: The name of the sequence.
        @return: A list of Psa.Keys.
-        '''
+        """
        # Set the file reader to the beginning of the keys data
        sequence = self.psa.sequences[sequence_name]
        data_size = sizeof(Psa.Key)
--- a/io_scene_psk_psa/psa/writer.py
+++ b/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 ..data import Section
+from ..shared.data import Section


 def write_section(fp, name: bytes, data_type: Type[Structure] = None, data: list = None):
--- a/io_scene_psk_psa/psk/builder.py
+++ b/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 ..helpers import *
+from ..shared.helpers import *


 class PskInputObjects(object):
@@ -28,10 +28,8 @@ 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':
-            raise RuntimeError(f'Selected object "{selected_object.name}" is not a mesh')
-
-    input_objects.mesh_objects = context.view_layer.objects.selected
+        if selected_object.type == 'MESH':
+            input_objects.mesh_objects.append(selected_object)

    if len(input_objects.mesh_objects) == 0:
        raise RuntimeError('At least one mesh must be selected')
--- a/io_scene_psk_psa/psk/data.py
+++ b/io_scene_psk_psa/psk/data.py
@@ -1,6 +1,6 @@
 from typing import List

-from ..data import *
+from ..shared.data import *


 class Psk(object):
--- a/io_scene_psk_psa/psk/export/operators.py
+++ b/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 ...helpers import populate_bone_collection_list
+from ...shared.helpers import populate_bone_collection_list


 def is_bone_filter_mode_item_available(context, identifier):
@@ -121,15 +121,17 @@ class PSK_OT_export(Operator, ExportHelper):
        pg = getattr(context.scene, 'psk_export')

        # MESH
-        box = layout.box()
-        box.label(text='Mesh', icon='MESH_DATA')
-        box.prop(pg, 'use_raw_mesh_data')
+        mesh_header, mesh_panel = layout.panel('01_mesh', default_closed=False)
+        mesh_header.label(text='Mesh', icon='MESH_DATA')
+        if mesh_panel:
+            mesh_panel.prop(pg, 'use_raw_mesh_data')

        # BONES
-        box = layout.box()
-        box.label(text='Bones', icon='BONE_DATA')
+        bones_header, bones_panel = layout.panel('02_bones', default_closed=False)
+        bones_header.label(text='Bones', icon='BONE_DATA')
+        if bones_panel:
            bone_filter_mode_items = pg.bl_rna.properties['bone_filter_mode'].enum_items_static
-        row = box.row(align=True)
+            row = bones_panel.row(align=True)
            for item in bone_filter_mode_items:
                identifier = item.identifier
                item_layout = row.row(align=True)
@@ -137,16 +139,17 @@ 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 = box.row()
+                row = bones_panel.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)

-        box.prop(pg, 'should_enforce_bone_name_restrictions')
+            bones_panel.prop(pg, 'should_enforce_bone_name_restrictions')

        # MATERIALS
-        box = layout.box()
-        box.label(text='Materials', icon='MATERIAL')
-        row = box.row()
+        materials_header, materials_panel = layout.panel('03_materials', default_closed=False)
+        materials_header.label(text='Materials', icon='MATERIAL')
+        if materials_panel:
+            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)
--- a/io_scene_psk_psa/psk/export/properties.py
+++ b/io_scene_psk_psa/psk/export/properties.py
@@ -1,8 +1,9 @@
 from bpy.props import EnumProperty, CollectionProperty, IntProperty, BoolProperty, PointerProperty
 from bpy.types import PropertyGroup, Material

-from ...types import PSX_PG_bone_collection_list_item
+from ...shared.types import PSX_PG_bone_collection_list_item

+empty_set = set()

 class PSK_PG_material_list_item(PropertyGroup):
    material: PointerProperty(type=Material)
@@ -12,7 +13,7 @@ class PSK_PG_material_list_item(PropertyGroup):
 class PSK_PG_export(PropertyGroup):
    bone_filter_mode: EnumProperty(
        name='Bone Filter',
-        options=set(),
+        options=empty_set,
        description='',
        items=(
            ('ALL', 'All', 'All bones will be exported'),
--- a/io_scene_psk_psa/psk/import_/operators.py
+++ b/io_scene_psk_psa/psk/import_/operators.py
@@ -2,7 +2,7 @@ import os
 import sys

 from bpy.props import StringProperty, BoolProperty, EnumProperty, FloatProperty
-from bpy.types import Operator
+from bpy.types import Operator, FileHandler, Context
 from bpy_extras.io_utils import ImportHelper

 from ..importer import PskImportOptions, import_psk
@@ -11,6 +11,17 @@ from ..reader import read_psk
 empty_set = set()


+class PSK_FH_import(FileHandler):
+    bl_idname = 'PSK_FH_import'
+    bl_label = 'File handler for Unreal PSK/PSKX import'
+    bl_import_operator = 'import_scene.psk'
+    bl_file_extensions = '.psk;.pskx'
+
+    @classmethod
+    def poll_drop(cls, context: Context):
+        return context.area and context.area.type == 'VIEW_3D'
+
+
 class PSK_OT_import(Operator, ImportHelper):
    bl_idname = 'import_scene.psk'
    bl_label = 'Import'
@@ -132,10 +143,11 @@ class PSK_OT_import(Operator, ImportHelper):
        col.use_property_decorate = False
        col.prop(self, 'scale')

-        layout.prop(self, 'should_import_mesh')
+        mesh_header, mesh_panel = layout.panel('mesh_panel_id', default_closed=False)
+        mesh_header.prop(self, 'should_import_mesh')

-        if self.should_import_mesh:
-            row = layout.row()
+        if mesh_panel and self.should_import_mesh:
+            row = mesh_panel.row()
            col = row.column()
            col.use_property_split = True
            col.use_property_decorate = False
@@ -147,9 +159,11 @@ class PSK_OT_import(Operator, ImportHelper):
                col.prop(self, 'vertex_color_space')
            col.prop(self, 'should_import_shape_keys', text='Shape Keys')

-        layout.prop(self, 'should_import_skeleton')
-        if self.should_import_skeleton:
-            row = layout.row()
+        skeleton_header, skeleton_panel = layout.panel('skeleton_panel_id', default_closed=False)
+        skeleton_header.prop(self, 'should_import_skeleton')
+
+        if skeleton_panel and self.should_import_skeleton:
+            row = skeleton_panel.row()
            col = row.column()
            col.use_property_split = True
            col.use_property_decorate = False
@@ -158,4 +172,5 @@ class PSK_OT_import(Operator, ImportHelper):

 classes = (
    PSK_OT_import,
+    PSK_FH_import,
 )
--- a/io_scene_psk_psa/psk/importer.py
+++ b/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 ..helpers import rgb_to_srgb, is_bdk_addon_loaded
+from ..shared.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='VTXW0000')
+        uv_layer = mesh_data.uv_layers.new(name='UVMap')
        for face_index, face in enumerate(psk.faces):
            if face_index in invalid_face_indices:
                continue
@@ -231,8 +231,6 @@ 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)
-            # TODO: This has been removed in 4.1!
-            mesh_data.use_auto_smooth = True
        else:
            mesh_data.shade_smooth()

--- a/io_scene_psk_psa/psk/writer.py
+++ b/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 ..data import Section, Vector3
+from ..shared.data import Section, Vector3

 MAX_WEDGE_COUNT = 65536
 MAX_POINT_COUNT = 4294967296
--- a/io_scene_psk_psa/shared/init.py
+++ b/io_scene_psk_psa/shared/init.py
--- a/io_scene_psk_psa/shared/data.py
+++ b/io_scene_psk_psa/shared/data.py
--- a/io_scene_psk_psa/shared/helpers.py
+++ b/io_scene_psk_psa/shared/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')

--- a/io_scene_psk_psa/shared/types.py
+++ b/io_scene_psk_psa/shared/types.py
Author	SHA1	Message	Date
Colin Basnett	275f246458	Update main.yml	2024-06-09 12:04:57 -07:00
Colin Basnett	80aa65f771	Update main.yml	2024-06-08 16:41:03 -07:00
Colin Basnett	27548979d5	Create main.yml	2024-06-08 16:35:52 -07:00
Colin Basnett	aa9fdca6cc	Moved all the source files into a nested `io_scene_psk_psa` folder in preparation for CI workflow Also changed the license to GPLv3	2024-06-07 23:05:58 -07:00
Colin Basnett	5c83b8974a	Merge branch 'master' into blender-4.2	2024-06-06 23:53:05 -07:00
Colin Basnett	4d3630893e	Fixed capitalization for mix-in class	2024-06-06 23:52:25 -07:00
Colin Basnett	f664e7714b	Merge pull request #95 from Blaco/fix-psa-import-metaclass Resolved metaclass conflict in PSA_UL_sequences	2024-06-06 19:23:32 -07:00
Taco	447687b588	Resolved metaclass conflict in PSA_UL_sequences This was breaking the 'Add Theme Preset' button in Blender's preferences, this small change fixes that	2024-06-05 19:52:35 -04:00
Colin Basnett	8df7b4b141	Fixed not being able to properly run reload scripts on the addon	2024-05-31 18:52:33 -07:00
Colin Basnett	cab8338a69	Changed the name of the add-on to something simpler	2024-05-27 16:21:31 -07:00
Colin Basnett	9dcd3778e0	Selected non-mesh objects will now be ignored on PSK export instead of blocking the operator from being invoked	2024-05-27 16:03:18 -07:00
Colin Basnett	fdb74ef7d0	Moved things around for packaging on Blender extensions	2024-05-27 14:56:37 -07:00
Colin Basnett	a47b4a1e04	Fixed a bug where the compression ratio and key quotas were not being correctly evaluated on NLA track strip sources	2024-05-19 15:15:21 -07:00
Colin Basnett	0202263dea	Fixed a bug where using the animation override would not correctly populate the NLA Track Strips list	2024-05-19 14:31:14 -07:00
Colin Basnett	7df032f504	Pose markers that begin with a `!` character now export only the first frame Without this, it is impossible to export sequences as a single frame using pose markers.	2024-04-07 12:30:23 -07:00
Colin Basnett	4c00771f53	Imported PSKs will now have the first UV layer named `UVMap` instead of `VTXW0000` This is because it caused issues for some folks when joining meshes made in Blender and meshes imported from a PSK. There would be two UV maps, and if the user wanted to make them share the same UVMap, they would need to go out of their way to fix the naming of the UV layers to match.	2024-04-07 12:28:06 -07:00
Colin Basnett	c7b23e8c0d	The PSK export operator now uses the new Blender 4.1 panels instead of the layout boxes	2024-04-07 12:26:13 -07:00
Colin Basnett	d107a56007	Fixed duplicate code issue	2024-03-25 23:52:36 -07:00
Colin Basnett	a5bef57c8d	Merge branch 'master' into blender-4.1 # Conflicts: # io_scene_psk_psa/psa/importer.py	2024-03-25 23:39:17 -07:00
Colin Basnett	44a55fc698	Fix for #83 Bones whose parents are not present in the PSA will now simply use the actual armature parent bone instead of failing the look-up and treating the bone as a root bone.	2024-03-25 20:20:33 -07:00
Colin Basnett	09cc9e5d51	Added PSA resampling Fixed PSA import resampling logic	2024-03-25 02:57:32 -07:00
Colin Basnett	d92f2d77d2	Incremented version to 6.2.1	2024-03-25 02:11:13 -07:00
Colin Basnett	9c8b9d922b	Fix for issue where using case insensitive bone mapping would fail Also made case-insensitive bone mapping the default for PSA import	2024-03-25 02:10:00 -07:00
Colin Basnett	20b072f87b	Fix for root bone being incorrectly oriented if it wasn't at the identity rotation in the bind pose	2024-03-25 02:08:51 -07:00
Colin Basnett	fb02742381	Reorganizing & renaming some things for clarity and correctness	2024-03-14 19:08:32 -07:00
Colin Basnett	d4d46bea66	PSA import dialog now uses new Blender 4.1 UI panels	2024-03-14 19:06:29 -07:00
Colin Basnett	a93450eab9	Added PSA file handler	2024-03-14 19:06:03 -07:00
Colin Basnett	c65fdaa6a4	Fixing PEP warnings	2024-03-14 19:04:12 -07:00
Colin Basnett	6b8088225a	Fix for root bone being incorrectly oriented if it wasn't at the identity rotation in the bind pose	2024-03-14 18:55:28 -07:00
Colin Basnett	e27b078866	Now handling PSKX files in the PSK file handler	2024-03-14 18:53:53 -07:00
Colin Basnett	b67c734687	Merge branch 'master' into blender-4.1	2024-03-11 18:46:24 -07:00
Colin Basnett	226e403925	Fix for syntax error	2024-03-11 18:46:18 -07:00
Colin Basnett	5d3c7cc570	Fixed PSA import resampling logic	2024-02-29 16:03:47 -08:00
Colin Basnett	11bf205fe2	Added PSA resampling on import + some fixes for 4.1	2024-02-13 14:03:04 -08:00
Colin Basnett	f7bbe911ea	Removed `use_auto_smooth`...again	2024-02-13 00:19:12 -08:00
Colin Basnett	8c49c8f34e	Merge branch 'master' into blender-4.1	2024-02-12 18:02:59 -08:00
Colin Basnett	e9ba117fa9	Added file handler for PSK/PSKX files	2024-01-20 14:48:18 -08:00