--- a/pytouhou/resource/loader.py
+++ b/pytouhou/resource/loader.py
@@ -12,13 +12,7 @@
 ## GNU General Public License for more details.
 ##
 
-import os
-from glob import glob
-from itertools import chain
-from io import BytesIO
-
-from pytouhou.formats import WrongFormatError
-from libtouhou import PBG3
+from libtouhou import Loader as RustLoader
 from pytouhou.formats.std import Stage
 from pytouhou.formats.ecl import ECL
 from pytouhou.formats.anm0 import ANM0
@@ -34,88 +28,12 @@
 
 
 
-class Directory:
-    def __init__(self, path):
-        self.path = path
-
-
-    def __enter__(self):
-        return self
-
-
-    def __exit__(self, type, value, traceback):
-        return False
-
-
-    @property
-    def file_list(self):
-        return self.list_files()
-
-    def list_files(self):
-        file_list = []
-        for path in os.listdir(self.path):
-            if os.path.isfile(os.path.join(self.path, path)):
-                file_list.append(path)
-        return file_list
-
-
-    def get_file(self, name):
-        return open(os.path.join(self.path, str(name)), 'rb')
-
-
-
-class ArchiveDescription:
-    _formats = {b'PBG3': PBG3}
-
-    @classmethod
-    def get_from_path(cls, path):
-        if os.path.isdir(path):
-            instance = Directory(path)
-            file_list = instance.list_files()
-            return instance
-        with open(path, 'rb') as file:
-            magic = file.read(4)
-            format_class = cls._formats[magic]
-        return format_class.from_filename(path)
-
-
-
-class Loader:
+class Loader(RustLoader):
     def __init__(self, game_dir=None):
-        self.exe_files = []
-        self.game_dir = game_dir
-        self.known_files = {}
         self.instanced_anms = {}  # Cache for the textures.
         self.loaded_anms = []  # For the double loading warnings.
 
 
-    def scan_archives(self, paths_lists):
-        for paths in paths_lists:
-            def _expand_paths():
-                for path in paths.split(os.path.pathsep):
-                    if self.game_dir and not os.path.isabs(path):
-                        path = os.path.join(self.game_dir, path)
-                    yield glob(path)
-            paths = list(chain(*_expand_paths()))
-            if not paths:
-                raise IOError
-            path = paths[0]
-            if os.path.splitext(path)[1] == '.exe':
-                self.exe_files.extend(paths)
-            else:
-                archive_description = ArchiveDescription.get_from_path(path)
-                for name in archive_description.file_list:
-                    self.known_files[name] = archive_description
-
-
-    def get_file(self, name):
-        archive = self.known_files[name]
-        file = archive.get_file(name)
-        if isinstance(file, bytes):
-            return BytesIO(file)
-        return file
-
-
     def get_anm(self, name):
         if name in self.loaded_anms:
             logger.warning('ANM0 %s already loaded', name)