PSA sequences are now selected by default

There were multiple bug reports from users who were getting mixed
signals from the addon, believing that the bone name warnings were
the cause of the sequences not being imported. The actual issue was that
users didn't know they needed to manually select the sequences within
the PSA.

This should fix the poor UX around this, as just having it selected by
default is more sensible for a wider audience.

io_scene_psk_psa/__init__.py

@@ -1,7 +1,7 @@
 bl_info = {
     "name": "PSK/PSA Importer/Exporter",
     "author": "Colin Basnett, Yurii Ti",
-    "version": (5, 0, 4),
+    "version": (5, 0, 6),
     "blender": (3, 4, 0),
     "description": "PSK/PSA Import/Export (.psk/.psa)",
     "warning": "",

io_scene_psk_psa/psa/export/properties.py

@@ -19,7 +19,7 @@ empty_set = set()
 class PSA_PG_export_action_list_item(PropertyGroup):
     action: PointerProperty(type=Action)
     name: StringProperty()
-    is_selected: BoolProperty(default=False)
+    is_selected: BoolProperty(default=True)
     frame_start: IntProperty(options={'HIDDEN'})
     frame_end: IntProperty(options={'HIDDEN'})
     is_pose_marker: BoolProperty(options={'HIDDEN'})

io_scene_psk_psa/psa/import_/operators.py

@@ -167,12 +167,17 @@ class PSA_OT_import(Operator, ImportHelper):
         options.should_convert_to_samples = pg.should_convert_to_samples
         options.bone_mapping_mode = pg.bone_mapping_mode
 
+        if len(sequence_names) == 0:
+            self.report({'ERROR_INVALID_CONTEXT'}, 'No sequences selected')
+            return {'CANCELLED'}
+
         result = import_psa(context, psa_reader, context.view_layer.objects.active, options)
 
         if len(result.warnings) > 0:
             message = f'Imported {len(sequence_names)} action(s) with {len(result.warnings)} warning(s)\n'
-            message += '\n'.join(result.warnings)
             self.report({'WARNING'}, message)
+            for warning in result.warnings:
+                self.report({'WARNING'}, warning)
         else:
             self.report({'INFO'}, f'Imported {len(sequence_names)} action(s)')
 

io_scene_psk_psa/psa/import_/properties.py

@@ -10,7 +10,7 @@ empty_set = set()
 
 class PSA_PG_import_action_list_item(PropertyGroup):
     action_name: StringProperty(options=empty_set)
-    is_selected: BoolProperty(default=False, options=empty_set)
+    is_selected: BoolProperty(default=True, options=empty_set)
 
 
 class PSA_PG_bone(PropertyGroup):

io_scene_psk_psa/psa/reader.py

@@ -5,6 +5,24 @@ import numpy as np
 from .data import *
 
 
+def _try_fix_cue4parse_issue_103(sequences) -> bool:
+    # Detect if the file was exported from CUE4Parse prior to the fix for issue #103.
+    # https://github.com/FabianFG/CUE4Parse/issues/103
+    # The issue was that the frame_start_index was not being set correctly, and was always being set to the same value
+    # as the frame_count.
+    # This fix will eventually be deprecated as it is only necessary for files exported prior to the fix.
+    if len(sequences) > 0:
+        if sequences[0].frame_start_index == sequences[0].frame_count:
+            # Manually set the frame_start_index for each sequence. This assumes that the sequences are in order with
+            # no shared frames between sequences (all exporters that I know of do this, so it's a safe assumption).
+            frame_start_index = 0
+            for i, sequence in enumerate(sequences):
+                sequence.frame_start_index = frame_start_index
+                frame_start_index += sequence.frame_count
+            return True
+    return False
+
+
 class PsaReader(object):
     """
     This class reads the sequences and bone information immediately upon instantiation and holds onto a file handle.
@@ -86,14 +104,15 @@ class PsaReader(object):
             elif section.name == b'ANIMINFO':
                 sequences = []
                 PsaReader._read_types(fp, Psa.Sequence, section, sequences)
+                # Try to fix CUE4Parse bug, if necessary.
+                _try_fix_cue4parse_issue_103(sequences)
                 for sequence in sequences:
                     psa.sequences[sequence.name.decode()] = sequence
             elif section.name == b'ANIMKEYS':
                 # 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':
-                fp.seek(section.data_size * section.data_count, 1)
             else:
-                raise RuntimeError(f'Unrecognized section "{section.name}"')
+                fp.seek(section.data_size * section.data_count, 1)
+                print(f'Unrecognized section in PSA: "{section.name}"')
         return psa

io_scene_psk_psa/psk/builder.py

@@ -147,8 +147,10 @@ def build_psk(context, options: PskBuildOptions) -> Psk:
 
             # Temporarily force the armature into the rest position.
             # We will undo this later.
-            old_pose_position = armature_object.data.pose_position
+            old_pose_position = None
-            armature_object.data.pose_position = 'REST'
+            if armature_object is not None:
+                old_pose_position = armature_object.data.pose_position
+                armature_object.data.pose_position = 'REST'
 
             depsgraph = context.evaluated_depsgraph_get()
             bm = bmesh.new()
@@ -164,7 +166,8 @@ def build_psk(context, options: PskBuildOptions) -> Psk:
                 mesh_object.vertex_groups.new(name=vertex_group.name)
 
             # Restore the previous pose position on the armature.
-            armature_object.data.pose_position = old_pose_position
+            if old_pose_position is not None:
+                armature_object.data.pose_position = old_pose_position
 
         vertex_offset = len(psk.points)