Fix import/export on *nix systems

.gitignore

@@ -0,0 +1,160 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/

README

@@ -1,6 +1,7 @@
 Blender PKG Add-On
-Version 1.02
-March 11th 2022
+Version 1.03
+
+31st July 2023
 
 Created by Dummiesman
 

io_scene_pkg/__init__.py

@@ -10,7 +10,7 @@
 bl_info = {
     "name": "Angel Studios PKG Format",
     "author": "Dummiesman",
-    "version": (1, 0, 0),
+    "version": (1, 0, 3),
     "blender": (2, 83, 0),
     "location": "File > Import-Export",
     "description": "Import-Export PKG files",

io_scene_pkg/binary_helper.py

@@ -16,7 +16,7 @@
 # READ #
 ########
 def read_angel_string(file):
-    str_len = struct.unpack('B', file.read(1))[0]
+    str_len = struct.unpack('<B', file.read(1))[0]
     if str_len == 0:
         return ''
     else:
@@ -52,7 +52,7 @@ def read_color4f(file):
 
 
 def read_color4d(file):
-    c4d = struct.unpack('BBBB', file.read(4))
+    c4d = struct.unpack('<BBBB', file.read(4))
     return [c4d[0]/255, c4d[1]/255, c4d[2]/255, c4d[3]/255]
 
 
@@ -108,11 +108,11 @@ def write_matrix3x4(file, matrix):
 
 def write_angel_string(file, strng):
     if strng is not None and len(strng) > 0:
-        file.write(struct.pack('B', len(strng)+1))
+        file.write(struct.pack('<B', len(strng)+1))
         file.write(bytes(strng, 'UTF-8'))
         file.write(bytes('\x00', 'UTF-8'))
     else:
-        file.write(struct.pack('B', 0))
+        file.write(struct.pack('<B', 0))
 
 
 def write_float2(file, data):
@@ -128,7 +128,7 @@ def write_color4d(file, color, alpha=1):
     g = min(255, int(color[1] * 255))
     b = min(255, int(color[2] * 255))
     a = min(255, int(alpha * 255))
-    file.write(struct.pack('BBBB', r, g, b, a))
+    file.write(struct.pack('<BBBB', r, g, b, a))
 
 
 def write_color4f(file, color, alpha=1):
@@ -138,4 +138,4 @@ def write_color4f(file, color, alpha=1):
 def write_file_header(file, name, length=0):
     file.write(bytes('FILE', 'utf-8'))
     write_angel_string(file, name)
-    file.write(struct.pack('L', length))
+    file.write(struct.pack('<L', length))

io_scene_pkg/common_helpers.py

@@ -34,29 +34,49 @@ def make_placeholder_texture(name):
     im.pixels = pixels[:]
     im.update()
     return im
+
 
-def find_file_with_game_fallback(file, search_path, subfolder = None, ignore_subdir_on_search_path = False):
-    # first search the search_path
-    find_path = (path.abspath(path.join(search_path, file))
-                 if (subfolder is None or ignore_subdir_on_search_path)
-                 else path.abspath(path.join(search_path, subfolder, file)))
-
-    #print("find_path initial:" + find_path)
-    if path.isfile(find_path):
-        return find_path
+# quick'n'dirty case-insensitive file finder
+def find_file_case_insensitive(directory_to_search, file_to_find):
+    directory_listing = os.listdir(path.abspath(directory_to_search))
+
+    for file in directory_listing:
+        if file.lower() == file_to_find.lower():
+            return file
+
+    return None
+
+
+def find_file(directory, filename):
+    real_file = find_file_case_insensitive(directory, filename)
+
+    if real_file is not None:
+        find_path = path.abspath(path.join(directory, real_file))
 
-    # then search game dir
-    preferences = bpy.context.preferences
-    addon_prefs = preferences.addons[__package__].preferences
-    if addon_prefs.use_gamepath:
-        find_path = (path.abspath(path.join(addon_prefs.gamepath, subfolder, file)) 
-                     if subfolder is not None 
-                     else path.abspath(path.join(addon_prefs.gamepath, file)))
-        #print("find_path game:" + find_path)
         if path.isfile(find_path):
             return find_path
 
-    # wasn't found in game dir or search_path
+    return None
+
+
+def find_file_with_game_fallback(file, search_path, subfolder = None, ignore_subdir_on_search_path = False):
+    preferences = bpy.context.preferences
+    addon_prefs = preferences.addons[__package__].preferences
+
+    if addon_prefs.use_gamepath is True and addon_prefs.gamepath != "":
+        search_path = addon_prefs.gamepath
+
+    normalised_search_path = (search_path
+        if (subfolder is None or ignore_subdir_on_search_path)
+        else path.join(search_path, subfolder)
+    )
+
+    found_file = find_file(normalised_search_path, file)
+
+    if found_file is not None:
+        return found_file
+
+    # exhausted our search, return nothing
     return None
 
 
@@ -79,7 +99,7 @@ def load_texture_from_path(file_path, use_placeholder_if_missing=True):
     else:
         img = bpy.data.images.load(file_path)
         return img
-        
+
     return None    
 
 
@@ -152,4 +172,4 @@ def convert_vecspace_to_blender(vtx):
     return (vtx[0] * -1, vtx[2], vtx[1])
 
 def convert_vecspace_to_mm2(vtx):
-    return (vtx[0] * -1, vtx[2], vtx[1])
+    return (vtx[0] * -1, vtx[2], vtx[1])

io_scene_pkg/export_helper.py

@@ -185,10 +185,10 @@ def bounds(obj):
 
 def write_matrix_standard(object, file):
     bnds = bounds(object)
-    file.write(struct.pack('fff', *helper.convert_vecspace_to_mm2((bnds.x.min * -1, bnds.y.min, bnds.z.min)))) # have to do * -1 for some reason
-    file.write(struct.pack('fff', *helper.convert_vecspace_to_mm2((bnds.x.max * -1, bnds.y.max, bnds.z.max)))) # have to do * -1 for some reason
-    file.write(struct.pack('fff', *helper.convert_vecspace_to_mm2(object.location))) # write this twice. one is pivot and one is origin
-    file.write(struct.pack('fff', *helper.convert_vecspace_to_mm2(object.location)))
+    file.write(struct.pack('<fff', *helper.convert_vecspace_to_mm2((bnds.x.min * -1, bnds.y.min, bnds.z.min)))) # have to do * -1 for some reason
+    file.write(struct.pack('<fff', *helper.convert_vecspace_to_mm2((bnds.x.max * -1, bnds.y.max, bnds.z.max)))) # have to do * -1 for some reason
+    file.write(struct.pack('<fff', *helper.convert_vecspace_to_mm2(object.location))) # write this twice. one is pivot and one is origin
+    file.write(struct.pack('<fff', *helper.convert_vecspace_to_mm2(object.location)))
 
 
 def write_matrix(meshname, object, pkg_path):