subsystems cleanup

.efrocachemap

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-  "build/prefab/full/windows_x86_gui/debug/BallisticaKit.exe": "https://files.ballistica.net/cache/ba1/08/59/d701c12712effe14b89ea37c013f",
+  "build/prefab/full/windows_x86_gui/debug/BallisticaKit.exe": "https://files.ballistica.net/cache/ba1/8e/df/6d1d1ef0ed45c6a81f60e7dbc3a5",
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+  "build/prefab/full/windows_x86_gui/release/BallisticaKit.exe": "https://files.ballistica.net/cache/ba1/bf/1e/d1bf7b259d98fd464889aa755c22",
-  "build/prefab/full/windows_x86_server/debug/dist/BallisticaKitHeadless.exe": "https://files.ballistica.net/cache/ba1/51/ae/49b7723adac6c2e763d03bf27b16",
+  "build/prefab/full/windows_x86_server/debug/dist/BallisticaKitHeadless.exe": "https://files.ballistica.net/cache/ba1/46/1b/20394315126f1f9aa200bd736ad7",
-  "build/prefab/full/windows_x86_server/release/dist/BallisticaKitHeadless.exe": "https://files.ballistica.net/cache/ba1/32/18/35d3b785547afc61cfb6b3ba3504",
+  "build/prefab/full/windows_x86_server/release/dist/BallisticaKitHeadless.exe": "https://files.ballistica.net/cache/ba1/25/36/a159b2c628f6cbbbcc7aa8f90b12",
   "build/prefab/lib/linux_arm64_gui/debug/libballistica_plus.a": "https://files.ballistica.net/cache/ba1/be/19/b5458933dfc7371d91ecfcd2e06f",
   "build/prefab/lib/linux_arm64_gui/release/libballistica_plus.a": "https://files.ballistica.net/cache/ba1/4e/48/123b806cbe6ddb3d9a8368bbb4f8",
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@@ -4104,18 +4104,18 @@
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   "build/prefab/lib/mac_x86_64_server/debug/libballistica_plus.a": "https://files.ballistica.net/cache/ba1/e1/cb/7e8440699e59e8646da25aa5782b",
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-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.lib": "https://files.ballistica.net/cache/ba1/5c/4e/26f72e68d55dcf12d62b1274b7ad",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.lib": "https://files.ballistica.net/cache/ba1/66/17/448c77d6413f25555e40055d154b",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.pdb": "https://files.ballistica.net/cache/ba1/c3/61/d40dfab20f59da7155b942632066",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.pdb": "https://files.ballistica.net/cache/ba1/56/b0/7ce3384cfb63d3a224e317c69fa8",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.lib": "https://files.ballistica.net/cache/ba1/a9/f7/ddae4d7e7e59f0b9db4eee09d226",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.lib": "https://files.ballistica.net/cache/ba1/b6/73/847160ecfbbbea758f130c03abb8",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.pdb": "https://files.ballistica.net/cache/ba1/4a/a4/c9c09853640eb5a5f5a0ce4cf71c",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.pdb": "https://files.ballistica.net/cache/ba1/dc/e6/e052a9115ca83686c6634d2c26ff",
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+  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.lib": "https://files.ballistica.net/cache/ba1/2e/56/390279b063b7f8455cf7f1656608",
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+  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.pdb": "https://files.ballistica.net/cache/ba1/3a/d7/a0329b38db9b594c36ff88a884c9",
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+  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.lib": "https://files.ballistica.net/cache/ba1/a5/9b/0802a9d6604fffc0136ac95a5be3",
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+  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.pdb": "https://files.ballistica.net/cache/ba1/e9/74/5d6a32e3a161a2f5597aa9336b79",
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   "src/assets/ba_data/python/babase/_mgen/enums.py": "https://files.ballistica.net/cache/ba1/48/4b/e6974f0a4d14be8213dc00d971c3",
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-  "src/ballistica/base/mgen/pyembed/binding_base_app.inc": "https://files.ballistica.net/cache/ba1/41/38/52cb9a73efef37404cec22fca18e",
+  "src/ballistica/base/mgen/pyembed/binding_base_app.inc": "https://files.ballistica.net/cache/ba1/c2/f2/cb8d052d76a1f4abe163cab2276e",
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   "src/ballistica/core/mgen/pyembed/binding_core.inc": "https://files.ballistica.net/cache/ba1/9d/0a/3c9636138e35284923e0c8311c69",
   "src/ballistica/core/mgen/pyembed/env.inc": "https://files.ballistica.net/cache/ba1/8b/e4/6e5818f360d10b7b0224a9e91d07",

CHANGELOG.md

@@ -1,6 +1,9 @@
-### 1.7.21 (build 21143, api 8, 2023-06-25)
+### 1.7.21 (build 21147, api 8, 2023-06-26)
 
 - Fixed an issue where server builds would not always include collision meshes.
+- Upgraded Python to 3.11.4 on Android builds.
+- Cleaned up the language subsystem and the process for applying app-config
+  changes a bit. Please holler if you see weirdness in either.
 
 ### 1.7.20 (build 21140, api 8, 2023-06-22)
 
@@ -360,8 +363,8 @@
   use log calls instead of prints. The environment vars to enable them are now
   `BA_DEBUG_LOG_CONNECTIVITY` and `BA_DEBUG_LOG_V2_TRANSPORT`. Set either to '1'
   to enable debug logging.
-- (build 21125) Fixed a bug where feature-sets would not have their
+- (build 21125) Fixed a bug where app-modes would not have their
-  DoApplyConfig callbacks called in C++, which was causing the server-mode
+  DoApplyAppConfig callbacks called in C++, which was causing the server-mode
   `idle_exit_minutes` value to be ignored. Servers should now properly exit
   after being idle for this length of time.
 - (build 21126) Reworked the efrocache system used by public builds for

config/featuresets/README.md

@@ -21,14 +21,14 @@ with specific naming conventions:
   in this directory called `featureset_foo_bar.py`.
 - **Python Package**: If feature set `foo_bar` provides a Python package, it
   should be a directory named `bafoobar` ('ba' prefix, name with spaces removed)
-  that lives under [Python source files](../../src/assets/ba_data/python).
+  that lives under [src/assets/ba_data/python](../../src/assets/ba_data/python).
 - **Native Code**: If feature set `foo_bar` provides a native component (C++
   code or otherwise) it should live in a directory named `foo_bar` (unmodified
-  feature set name) under [native source files](../../src/ballistica).
+  feature set name) under [src/ballistica](../../src/ballistica).
 - **Meta Package**: If feature set `foo_bar` provides a meta package (that is,
   code or data used to generate other source code), it should be a directory
   named `bafoobarmeta` ('ba' prefix, name with spaces removed, 'meta' suffix)
-  that lives under [meta source files](../../src/meta).
+  that lives under [src/meta](../../src/meta).
 - **Test Package**: If feature set `foo_bar` provides a set of tests, it should
   be a directory named `test_foo_bar` ('test_' prefix, unmodified feature set
   name) under [tests](../../tests).

src/assets/ba_data/python/babase/_app.py

@@ -54,8 +54,8 @@ class App:
     # pylint: disable=too-many-public-methods
 
     plugins: PluginSubsystem
+    lang: LanguageSubsystem
 
-    # log_handler: LogHandler
     health_monitor: AppHealthMonitor
 
     class State(Enum):
@@ -247,6 +247,7 @@ class App:
         self._called_on_app_running = False
         self._app_paused = False
         self._subsystem_registration_ended = False
+        self._pending_apply_app_config = False
 
         # Config.
         self.config_file_healthy = False
@@ -281,7 +282,6 @@ class App:
 
         self.components = AppComponentSubsystem()
         self.meta = MetadataSubsystem()
-        self.lang = LanguageSubsystem()
         self.net = NetworkSubsystem()
         self.workspaces = WorkspaceSubsystem()
         self._pending_intent: AppIntent | None = None
@@ -297,7 +297,7 @@ class App:
         self._asyncio_timer: babase.AppTimer | None = None
 
     def postinit(self) -> None:
-        """Called after we are inited and assigned to babase.app."""
+        """Called after we've been inited and assigned to babase.app."""
 
         if os.environ.get('BA_RUNNING_WITH_DUMMY_MODULES') == '1':
             return
@@ -306,6 +306,7 @@ class App:
         # some of this stuff accesses babase.app and that doesn't
         # exist yet as of our __init__() call.
 
+        self.lang = LanguageSubsystem()
         self.plugins = PluginSubsystem()
 
     def register_subsystem(self, subsystem: AppSubsystem) -> None:
@@ -622,6 +623,39 @@ class App:
             # plugin hasn't already told it to do something.
             self.set_intent(AppIntentDefault())
 
+    def push_apply_app_config(self) -> None:
+        """Internal. Use app.config.apply() to apply app config changes."""
+        # To be safe, let's run this by itself in the event loop.
+        # This avoids potential trouble if this gets called mid-draw or
+        # something like that.
+        self._pending_apply_app_config = True
+        _babase.pushcall(self._apply_app_config, raw=True)
+
+    def _apply_app_config(self) -> None:
+        assert _babase.in_logic_thread()
+
+        _babase.lifecyclelog('apply-app-config')
+
+        # If multiple apply calls have been made, only actually apply once.
+        if not self._pending_apply_app_config:
+            return
+
+        _pending_apply_app_config = False
+
+        # Inform all app subsystems in the same order they were inited.
+        # Operate on a copy here because subsystems may still be able to
+        # be added at this point.
+        for subsystem in self._subsystems.copy():
+            try:
+                subsystem.do_apply_app_config()
+            except Exception:
+                logging.exception(
+                    'Error in do_apply_app_config for subsystem %s.', subsystem
+                )
+
+        # Let the native layer do its thing.
+        _babase.do_apply_app_config()
+
     class DefaultAppModeSelector(AppModeSelector):
         """Decides which app modes to use to handle intents.
 

src/assets/ba_data/python/babase/_appconfig.py

@@ -10,6 +10,8 @@ import _babase
 if TYPE_CHECKING:
     from typing import Any
 
+_g_pending_apply = False  # pylint: disable=invalid-name
+
 
 class AppConfig(dict):
     """A special dict that holds the game's persistent configuration values.
@@ -74,8 +76,12 @@ class AppConfig(dict):
         return _babase.get_appconfig_builtin_keys()
 
     def apply(self) -> None:
-        """Apply config values to the running app."""
+        """Apply config values to the running app.
-        _babase.apply_config()
+
+        This call is thread-safe and asynchronous; changes will happen
+        in the next logic event loop cycle.
+        """
+        _babase.app.push_apply_app_config()
 
     def commit(self) -> None:
         """Commits the config to local storage.

src/assets/ba_data/python/babase/_appsubsystem.py

@@ -47,3 +47,6 @@ class AppSubsystem:
 
     def on_app_shutdown(self) -> None:
         """Called when the app is shutting down."""
+
+    def do_apply_app_config(self) -> None:
+        """Called when the app config should be applied."""

src/assets/ba_data/python/babase/_language.py

@@ -9,6 +9,7 @@ import logging
 from typing import TYPE_CHECKING, overload
 
 import _babase
+from babase._appsubsystem import AppSubsystem
 
 if TYPE_CHECKING:
     from typing import Any, Sequence
@@ -16,44 +17,21 @@ if TYPE_CHECKING:
     import babase
 
 
-class LanguageSubsystem:
+class LanguageSubsystem(AppSubsystem):
-    """Wraps up language related app functionality.
+    """Language functionality for the app.
 
     Category: **App Classes**
 
-    To use this class, access the single instance of it at 'ba.app.lang'.
+    Access the single instance of this class at 'babase.app.lang'.
     """
 
     def __init__(self) -> None:
-        self.language_target: AttrDict | None = None
+        super().__init__()
-        self.language_merged: AttrDict | None = None
+        self.default_language: str = self._get_default_language()
-        self.default_language = self._get_default_language()
 
-    def _can_display_language(self, language: str) -> bool:
+        self._language: str | None = None
-        """Tell whether we can display a particular language.
+        self._language_target: AttrDict | None = None
-
+        self._language_merged: AttrDict | None = None
-        On some platforms we don't have unicode rendering yet
-        which limits the languages we can draw.
-        """
-
-        # We don't yet support full unicode display on windows or linux :-(.
-        if (
-            language
-            in {
-                'Chinese',
-                'ChineseTraditional',
-                'Persian',
-                'Korean',
-                'Arabic',
-                'Hindi',
-                'Vietnamese',
-                'Thai',
-                'Tamil',
-            }
-            and not _babase.can_display_full_unicode()
-        ):
-            return False
-        return True
 
     @property
     def locale(self) -> str:
@@ -67,62 +45,16 @@ class LanguageSubsystem:
         assert isinstance(env['locale'], str)
         return env['locale']
 
-    def _get_default_language(self) -> str:
-        languages = {
-            'ar': 'Arabic',
-            'be': 'Belarussian',
-            'zh': 'Chinese',
-            'hr': 'Croatian',
-            'cs': 'Czech',
-            'da': 'Danish',
-            'nl': 'Dutch',
-            'eo': 'Esperanto',
-            'fil': 'Filipino',
-            'fr': 'French',
-            'de': 'German',
-            'el': 'Greek',
-            'hi': 'Hindi',
-            'hu': 'Hungarian',
-            'id': 'Indonesian',
-            'it': 'Italian',
-            'ko': 'Korean',
-            'ms': 'Malay',
-            'fa': 'Persian',
-            'pl': 'Polish',
-            'pt': 'Portuguese',
-            'ro': 'Romanian',
-            'ru': 'Russian',
-            'sr': 'Serbian',
-            'es': 'Spanish',
-            'sk': 'Slovak',
-            'sv': 'Swedish',
-            'ta': 'Tamil',
-            'th': 'Thai',
-            'tr': 'Turkish',
-            'uk': 'Ukrainian',
-            'vec': 'Venetian',
-            'vi': 'Vietnamese',
-        }
-
-        # Special case for Chinese: map specific variations to traditional.
-        # (otherwise will map to 'Chinese' which is simplified)
-        if self.locale in ('zh_HANT', 'zh_TW'):
-            language = 'ChineseTraditional'
-        else:
-            language = languages.get(self.locale[:2], 'English')
-        if not self._can_display_language(language):
-            language = 'English'
-        return language
-
     @property
     def language(self) -> str:
-        """The name of the language the game is running in.
+        """The current active language for the app.
 
         This can be selected explicitly by the user or may be set
-        automatically based on babase.App.locale or other factors.
+        automatically based on locale or other factors.
         """
-        assert isinstance(_babase.app.config, dict)
+        if self._language is None:
-        return _babase.app.config.get('Lang', self.default_language)
+            raise RuntimeError('App language is not yet set.')
+        return self._language
 
     @property
     def available_languages(self) -> list[str]:
@@ -164,13 +96,14 @@ class LanguageSubsystem:
         print_change: bool = True,
         store_to_config: bool = True,
     ) -> None:
-        """Set the active language used for the game.
+        """Set the active app language.
 
         Pass None to use OS default language.
         """
         # pylint: disable=too-many-locals
         # pylint: disable=too-many-statements
         # pylint: disable=too-many-branches
+        assert _babase.in_logic_thread()
         cfg = _babase.app.config
         cur_language = cfg.get('Lang', None)
 
@@ -215,38 +148,36 @@ class LanguageSubsystem:
                 with open(lmodfile, encoding='utf-8') as infile:
                     lmodvalues = json.loads(infile.read())
         except Exception:
-            from babase import _error
+            logging.exception("Error importing language '%s'.", language)
-
-            _error.print_exception('Exception importing language:', language)
             _babase.screenmessage(
-                "Error setting language to '"
+                f"Error setting language to '{language}'; see log for details.",
-                + language
-                + "'; see log for details",
                 color=(1, 0, 0),
             )
             switched = False
             lmodvalues = None
 
+        self._language = language
+
         # Create an attrdict of *just* our target language.
-        self.language_target = AttrDict()
+        self._language_target = AttrDict()
-        langtarget = self.language_target
+        langtarget = self._language_target
         assert langtarget is not None
         _add_to_attr_dict(
             langtarget, lmodvalues if lmodvalues is not None else lenglishvalues
         )
 
-        # Create an attrdict of our target language overlaid
+        # Create an attrdict of our target language overlaid on our base
-        # on our base (english).
+        # (english).
         languages = [lenglishvalues]
         if lmodvalues is not None:
             languages.append(lmodvalues)
         lfull = AttrDict()
         for lmod in languages:
             _add_to_attr_dict(lfull, lmod)
-        self.language_merged = lfull
+        self._language_merged = lfull
 
-        # Pass some keys/values in for low level code to use;
+        # Pass some keys/values in for low level code to use; start with
-        # start with everything in their 'internal' section.
+        # everything in their 'internal' section.
         internal_vals = [
             v for v in list(lfull['internal'].items()) if isinstance(v[1], str)
         ]
@@ -265,7 +196,7 @@ class LanguageSubsystem:
             ('axisText', lfull['configGamepadWindow']['axisText'])
         )
         internal_vals.append(('buttonText', lfull['buttonText']))
-        lmerged = self.language_merged
+        lmerged = self._language_merged
         assert lmerged is not None
         random_names = [
             n.strip() for n in lmerged['randomPlayerNamesText'].split(',')
@@ -283,6 +214,13 @@ class LanguageSubsystem:
                 color=(0, 1, 0),
             )
 
+    def do_apply_app_config(self) -> None:
+        assert _babase.in_logic_thread()
+        assert isinstance(_babase.app.config, dict)
+        lang = _babase.app.config.get('Lang', self.default_language)
+        if lang != self._language:
+            self.setlanguage(lang, print_change=False, store_to_config=False)
+
     def get_resource(
         self,
         resource: str,
@@ -294,38 +232,30 @@ class LanguageSubsystem:
         DEPRECATED; use babase.Lstr functionality for these purposes.
         """
         try:
-            # If we have no language set, go ahead and set it.
+            # If we have no language set, try and set it to english.
-            if self.language_merged is None:
+            # Also make a fuss because we should try to avoid this.
-                language = self.language
+            if self._language_merged is None:
                 try:
+                    if _babase.do_once():
+                        logging.warning(
+                            'get_resource() called before language'
+                            ' set; falling back to english.'
+                        )
                     self.setlanguage(
-                        language, print_change=False, store_to_config=False
+                        'English', print_change=False, store_to_config=False
                     )
                 except Exception:
-                    from babase import _error
+                    logging.exception(
-
+                        'Error setting fallback english language.'
-                    logging.exception('Error setting language to %s.', language)
+                    )
-
+                    raise
-                    # Try english as a fallback.
-                    if language != 'English':
-                        print('Resorting to fallback language (English)')
-                        try:
-                            self.setlanguage(
-                                'English',
-                                print_change=False,
-                                store_to_config=False,
-                            )
-                        except Exception:
-                            _error.print_exception(
-                                'error setting language to english fallback'
-                            )
 
             # If they provided a fallback_resource value, try the
-            # target-language-only dict first and then fall back to trying the
+            # target-language-only dict first and then fall back to
-            # fallback_resource value in the merged dict.
+            # trying the fallback_resource value in the merged dict.
             if fallback_resource is not None:
                 try:
-                    values = self.language_target
+                    values = self._language_target
                     splits = resource.split('.')
                     dicts = splits[:-1]
                     key = splits[-1]
@@ -336,11 +266,11 @@ class LanguageSubsystem:
                     val = values[key]
                     return val
                 except Exception:
-                    # FIXME: Shouldn't we try the fallback resource in the
+                    # FIXME: Shouldn't we try the fallback resource in
-                    #  merged dict AFTER we try the main resource in the
+                    #  the merged dict AFTER we try the main resource in
-                    #  merged dict?
+                    #  the merged dict?
                     try:
-                        values = self.language_merged
+                        values = self._language_merged
                         splits = fallback_resource.split('.')
                         dicts = splits[:-1]
                         key = splits[-1]
@@ -352,14 +282,15 @@ class LanguageSubsystem:
                         return val
 
                     except Exception:
-                        # If we got nothing for fallback_resource, default
+                        # If we got nothing for fallback_resource,
-                        # to the normal code which checks or primary
+                        # default to the normal code which checks or
-                        # value in the merge dict; there's a chance we can
+                        # primary value in the merge dict; there's a
-                        # get an english value for it (which we weren't
+                        # chance we can get an english value for it
-                        # looking for the first time through).
+                        # (which we weren't looking for the first time
+                        # through).
                         pass
 
-            values = self.language_merged
+            values = self._language_merged
             splits = resource.split('.')
             dicts = splits[:-1]
             key = splits[-1]
@@ -371,9 +302,9 @@ class LanguageSubsystem:
             return val
 
         except Exception:
-            # Ok, looks like we couldn't find our main or fallback resource
+            # Ok, looks like we couldn't find our main or fallback
-            # anywhere. Now if we've been given a fallback value, return it;
+            # resource anywhere. Now if we've been given a fallback
-            # otherwise fail.
+            # value, return it; otherwise fail.
             from babase import _error
 
             if fallback_value is not None:
@@ -426,18 +357,93 @@ class LanguageSubsystem:
             raise ValueError('Invalid Input; must be length 1')
         return 0xE000 <= ord(char) <= 0xF8FF
 
+    def _can_display_language(self, language: str) -> bool:
+        """Tell whether we can display a particular language.
+
+        On some platforms we don't have unicode rendering yet which
+        limits the languages we can draw.
+        """
+
+        # We don't yet support full unicode display on windows or linux :-(.
+        if (
+            language
+            in {
+                'Chinese',
+                'ChineseTraditional',
+                'Persian',
+                'Korean',
+                'Arabic',
+                'Hindi',
+                'Vietnamese',
+                'Thai',
+                'Tamil',
+            }
+            and not _babase.can_display_full_unicode()
+        ):
+            return False
+        return True
+
+    def _get_default_language(self) -> str:
+        languages = {
+            'ar': 'Arabic',
+            'be': 'Belarussian',
+            'zh': 'Chinese',
+            'hr': 'Croatian',
+            'cs': 'Czech',
+            'da': 'Danish',
+            'nl': 'Dutch',
+            'eo': 'Esperanto',
+            'fil': 'Filipino',
+            'fr': 'French',
+            'de': 'German',
+            'el': 'Greek',
+            'hi': 'Hindi',
+            'hu': 'Hungarian',
+            'id': 'Indonesian',
+            'it': 'Italian',
+            'ko': 'Korean',
+            'ms': 'Malay',
+            'fa': 'Persian',
+            'pl': 'Polish',
+            'pt': 'Portuguese',
+            'ro': 'Romanian',
+            'ru': 'Russian',
+            'sr': 'Serbian',
+            'es': 'Spanish',
+            'sk': 'Slovak',
+            'sv': 'Swedish',
+            'ta': 'Tamil',
+            'th': 'Thai',
+            'tr': 'Turkish',
+            'uk': 'Ukrainian',
+            'vec': 'Venetian',
+            'vi': 'Vietnamese',
+        }
+
+        # Special case for Chinese: map specific variations to
+        # traditional. (otherwise will map to 'Chinese' which is
+        # simplified)
+        if self.locale in ('zh_HANT', 'zh_TW'):
+            language = 'ChineseTraditional'
+        else:
+            language = languages.get(self.locale[:2], 'English')
+        if not self._can_display_language(language):
+            language = 'English'
+        return language
+
 
 class Lstr:
     """Used to define strings in a language-independent way.
 
     Category: **General Utility Classes**
 
-    These should be used whenever possible in place of hard-coded strings
+    These should be used whenever possible in place of hard-coded
-    so that in-game or UI elements show up correctly on all clients in their
+    strings so that in-game or UI elements show up correctly on all
-    currently-active language.
+    clients in their currently-active language.
 
-    To see available resource keys, look at any of the bs_language_*.py files
+    To see available resource keys, look at any of the bs_language_*.py
-    in the game or the translations pages at legacy.ballistica.net/translate.
+    files in the game or the translations pages at
+    legacy.ballistica.net/translate.
 
     ##### Examples
     EXAMPLE 1: specify a string from a resource path
@@ -573,10 +579,10 @@ class Lstr:
     def is_flat_value(self) -> bool:
         """Return whether the Lstr is a 'flat' value.
 
-        This is defined as a simple string value incorporating no translations,
+        This is defined as a simple string value incorporating no
-        resources, or substitutions.  In this case it may be reasonable to
+        translations, resources, or substitutions. In this case it may
-        replace it with a raw string value, perform string manipulation on it,
+        be reasonable to replace it with a raw string value, perform
-        etc.
+        string manipulation on it, etc.
         """
         return bool('v' in self.args and not self.args.get('s', []))
 

src/assets/ba_data/python/baenv.py

@@ -28,7 +28,7 @@ if TYPE_CHECKING:
 
 # Build number and version of the ballistica binary we expect to be
 # using.
-TARGET_BALLISTICA_BUILD = 21143
+TARGET_BALLISTICA_BUILD = 21147
 TARGET_BALLISTICA_VERSION = '1.7.21'
 
 _g_env_config: EnvConfig | None = None

src/ballistica/base/base.cc

@@ -176,10 +176,9 @@ void BaseFeatureSet::StartApp() {
 
   LogVersionInfo();
 
-  g_core->LifecycleLog("will read config");
+  // Read in ba.app.config for anyone who wants to start looking at it
-
+  // (though we don't explicitly ask anyone to apply it until later).
-  // Read the app config.
+  python->ReadConfig();
-  g_base->python->ReadConfig();
 
   // Allow our subsystems to start doing work in their own threads and
   // communicating with other subsystems. Note that we may still want to run
@@ -188,12 +187,8 @@ void BaseFeatureSet::StartApp() {
   // devices with the logic thread before the logic thread applies the
   // current config to them).
 
-  g_core->LifecycleLog("will call python on-main-thread");
-
   python->OnMainThreadStartApp();
-  g_core->LifecycleLog("will call logic on-main-thread");
   logic->OnMainThreadStartApp();
-  g_core->LifecycleLog("will call graphics-server on-main-thread");
   graphics_server->OnMainThreadStartApp();
   if (bg_dynamics_server) {
     bg_dynamics_server->OnMainThreadStartApp();
@@ -209,10 +204,14 @@ void BaseFeatureSet::StartApp() {
   // if called early.
   app_running_ = true;
 
-  // As the last step of this phase, tell the logic thread to apply
+  // As the last step of this phase, tell the logic thread to apply the app
-  // the app config which will kick off screen creation and otherwise
+  // config which will kick off screen creation and otherwise get the ball
-  // get the ball rolling.
+  // rolling.
-  logic->event_loop()->PushCall([this] { logic->ApplyAppConfig(); });
+  {
+    Python::ScopedInterpreterLock gil;
+    python->objs().Get(BasePython::ObjID::kPushApplyAppConfigCall).Call();
+  }
+
   g_core->LifecycleLog("start-app end (main thread)");
 }
 
@@ -252,11 +251,6 @@ void BaseFeatureSet::set_app_mode(AppMode* mode) {
 
     app_mode_->OnActivate();
 
-    // Since app-modes will mostly become active after the initial global
-    // apply-app-config happens, we need to tell them to do so explicitly when
-    // they spin up.
-    app_mode_->DoApplyAppConfig();
-
     // Let some stuff know.
     logic->OnAppModeChanged();
   } catch (const Exception& exc) {

src/ballistica/base/graphics/graphics.cc

@@ -1111,6 +1111,11 @@ void Graphics::BuildAndPushFrameDef() {
   assert(g_base->InLogicThread());
   assert(camera_.Exists());
 
+  // Keep track of when we're in here; can be useful for making sure stuff
+  // doesn't muck with our lists/etc. while we're using them.
+  assert(!building_frame_def_);
+  building_frame_def_ = true;
+
   // We should not be building/pushing any frames until after
   // app-launch-commands have been run.
   BA_PRECONDITION_FATAL(g_base->logic->app_bootstrapping_complete());
@@ -1234,6 +1239,9 @@ void Graphics::BuildAndPushFrameDef() {
   blotch_soft_verts_.clear();
   blotch_soft_obj_indices_.clear();
   blotch_soft_obj_verts_.clear();
+
+  assert(building_frame_def_);
+  building_frame_def_ = false;
 }
 
 void Graphics::DrawBoxingGlovesTest(FrameDef* frame_def) {
@@ -1541,7 +1549,6 @@ void Graphics::SetSupportsHighQualityGraphics(bool s) {
 
 void Graphics::ClearScreenMessageTranslations() {
   assert(g_base && g_base->InLogicThread());
-
   for (auto&& i : screen_messages_) {
     i.translation_dirty = true;
   }
@@ -2017,6 +2024,10 @@ auto Graphics::ReflectionTypeFromString(const std::string& s)
 
 void Graphics::LanguageChanged() {
   assert(g_base && g_base->InLogicThread());
+  if (building_frame_def_) {
+    Log(LogLevel::kWarning,
+        "Graphics::LanguageChanged() called during draw; should not happen.");
+  }
   // Also clear translations on all screen-messages.
   ClearScreenMessageTranslations();
 }

src/ballistica/base/graphics/graphics.h

@@ -432,6 +432,7 @@ class Graphics {
   int64_t frame_def_count_{1};
   bool gyro_enabled_{true};
   millisecs_t last_suppress_gyro_time_{};
+  int building_frame_def_{};
 };
 
 }  // namespace ballistica::base

src/ballistica/base/logic/logic.cc

@@ -25,12 +25,9 @@ Logic::Logic() : display_timers_(new TimerList()) {
 }
 
 void Logic::OnMainThreadStartApp() {
-  g_core->LifecycleLog("will create logic loop");
-
   event_loop_ = new EventLoop(EventLoopID::kLogic);
   g_core->pausable_event_loops.push_back(event_loop_);
 
-  g_core->LifecycleLog("will push logic on-app-start");
   // Sit and wait for our logic thread to run its startup stuff.
   event_loop_->PushCallSynchronous([this] { OnAppStart(); });
 }
@@ -144,9 +141,8 @@ void Logic::OnAppShutdown() {
       [] { g_base->app->LogicThreadShutdownComplete(); });
 }
 
-void Logic::ApplyAppConfig() {
+void Logic::DoApplyAppConfig() {
   assert(g_base->InLogicThread());
-  g_core->LifecycleLog("apply-app-config");
 
   // Give all our other subsystems a chance.
   // Note: keep these in the same order as OnAppStart.

src/ballistica/base/logic/logic.h

@@ -33,7 +33,7 @@ class Logic {
 
   void OnAppModeChanged();
 
-  void ApplyAppConfig();
+  void DoApplyAppConfig();
   void OnScreenSizeChange(float virtual_width, float virtual_height,
                           float pixel_width, float pixel_height);
 

src/ballistica/base/python/base_python.h

@@ -103,6 +103,7 @@ class BasePython {
     kOpenURLWithWebBrowserModuleCall,
     kOnNativeModuleImportCall,
     kSetupEnvForAppRunCall,
+    kPushApplyAppConfigCall,
     kLast  // Sentinel; must be at end.
   };
 

src/ballistica/base/python/methods/python_methods_app.cc

@@ -552,24 +552,22 @@ static PyMethodDef PyQuitDef = {
 
 // ----------------------------- apply_config ----------------------------------
 
-static auto PyApplyConfig(PyObject* self, PyObject* args) -> PyObject* {
+static auto PyDoApplyAppConfig(PyObject* self, PyObject* args) -> PyObject* {
   BA_PYTHON_TRY;
 
-  // Hmm; Python runs in the logic thread; technically we could just run
+  BA_PRECONDITION(g_base->InLogicThread());
-  // ApplyAppConfig() immediately (though pushing is probably safer).
+  g_base->logic->DoApplyAppConfig();
-  g_base->logic->event_loop()->PushCall(
-      [] { g_base->logic->ApplyAppConfig(); });
 
   Py_RETURN_NONE;
   BA_PYTHON_CATCH;
 }
 
-static PyMethodDef PyApplyConfigDef = {
+static PyMethodDef PyDoApplyAppConfigDef = {
-    "apply_config",  // name
+    "do_apply_app_config",  // name
-    PyApplyConfig,   // method
+    PyDoApplyAppConfig,     // method
-    METH_VARARGS,    // flags
+    METH_VARARGS,           // flags
 
-    "apply_config() -> None\n"
+    "do_apply_app_config() -> None\n"
     "\n"
     "(internal)",
 };
@@ -1468,7 +1466,7 @@ auto PythonMethodsApp::GetMethods() -> std::vector<PyMethodDef> {
       PyEnvDef,
       PyPreEnvDef,
       PyCommitConfigDef,
-      PyApplyConfigDef,
+      PyDoApplyAppConfigDef,
       PyQuitDef,
       PyAppTimerDef,
       PyAppTimeDef,

src/ballistica/base/python/methods/python_methods_misc.cc

@@ -1170,6 +1170,7 @@ static auto PySetInternalLanguageKeys(PyObject* self, PyObject* args)
   BA_PRECONDITION(PyList_Check(random_names_list_obj));
   std::unordered_map<std::string, std::string> language;
   int size = static_cast<int>(PyList_GET_SIZE(list_obj));
+
   for (int i = 0; i < size; i++) {
     PyObject* entry = PyList_GET_ITEM(list_obj, i);
     if (!PyTuple_Check(entry) || PyTuple_GET_SIZE(entry) != 2
@@ -1180,6 +1181,7 @@ static auto PySetInternalLanguageKeys(PyObject* self, PyObject* args)
     language[PyUnicode_AsUTF8(PyTuple_GET_ITEM(entry, 0))] =
         PyUnicode_AsUTF8(PyTuple_GET_ITEM(entry, 1));
   }
+
   size = static_cast<int>(PyList_GET_SIZE(random_names_list_obj));
   std::list<std::string> random_names;
   for (int i = 0; i < size; i++) {
@@ -1189,6 +1191,7 @@ static auto PySetInternalLanguageKeys(PyObject* self, PyObject* args)
     }
     random_names.emplace_back(PyUnicode_AsUTF8(entry));
   }
+
   Utils::SetRandomNameList(random_names);
   assert(g_base->logic);
   g_base->assets->SetLanguageKeys(language);

src/ballistica/core/python/core_python.cc

@@ -27,7 +27,7 @@ void CorePython::InitPython() {
 
   // Pre-config as isolated if we include our own Python and as standard
   // otherwise.
-  PyPreConfig preconfig;
+  PyPreConfig preconfig{};
   if (g_buildconfig.contains_python_dist()) {
     PyPreConfig_InitIsolatedConfig(&preconfig);
   } else {
@@ -44,7 +44,7 @@ void CorePython::InitPython() {
 
   // Configure as isolated if we include our own Python and as standard
   // otherwise.
-  PyConfig config;
+  PyConfig config{};
   if (g_buildconfig.contains_python_dist()) {
     PyConfig_InitIsolatedConfig(&config);
     // We manage paths 100% ourself in this case and don't want any site
@@ -113,6 +113,7 @@ void CorePython::InitPython() {
   // Init Python.
   status = Py_InitializeFromConfig(&config);
   BA_PRECONDITION_FATAL(!PyStatus_Exception(status));
+  PyConfig_Clear(&config);
 }
 
 void CorePython::EnablePythonLoggingCalls() {

src/ballistica/scene_v1/support/scene_v1_app_mode.cc

@@ -77,7 +77,14 @@ bool SceneV1AppMode::InMainMenu() const {
 
 static SceneV1AppMode* g_scene_v1_app_mode{};
 
-void SceneV1AppMode::OnActivate() { Reset(); }
+void SceneV1AppMode::OnActivate() {
+  Reset();
+
+  // To set initial states, explicitly fire some of our 'On-Foo-Changed'
+  // callbacks.
+  DoApplyAppConfig();
+  LanguageChanged();
+}
 
 void SceneV1AppMode::OnAppStart() { assert(g_base->InLogicThread()); }
 
@@ -1197,6 +1204,7 @@ void SceneV1AppMode::PruneSessions() {
 }
 
 void SceneV1AppMode::LanguageChanged() {
+  assert(g_base && g_base->InLogicThread());
   if (Session* session = GetForegroundSession()) {
     session->LanguageChanged();
   }

src/ballistica/shared/ballistica.cc

@@ -39,7 +39,7 @@ auto main(int argc, char** argv) -> int {
 namespace ballistica {
 
 // These are set automatically via script; don't modify them here.
-const int kEngineBuildNumber = 21143;
+const int kEngineBuildNumber = 21147;
 const char* kEngineVersion = "1.7.21";
 
 auto MonolithicMain(const core::CoreConfig& core_config) -> int {

src/ballistica/shared/foundation/event_loop.cc

@@ -76,16 +76,9 @@ EventLoop::EventLoop(EventLoopID identifier_in, ThreadSource source)
       // Block until the thread is bootstrapped.
       // (maybe not necessary, but let's be cautious in case we'd
       // try to use things like thread_id before they're known).
-      if (identifier_ == EventLoopID::kLogic) {
-        g_core->LifecycleLog("logic thread bootstrap wait begin");
-      }
       std::unique_lock lock(client_listener_mutex_);
       client_listener_cv_.wait(lock, [this] { return bootstrapped_; });
 
-      if (identifier_ == EventLoopID::kLogic) {
-        g_core->LifecycleLog("logic thread bootstrap wait end");
-      }
-
       break;
     }
     case ThreadSource::kWrapMain: {
@@ -512,7 +505,7 @@ void EventLoop::PushThreadMessage(const ThreadMessage& t) {
   // So tally up any logs and send them after.
   std::vector<std::pair<LogLevel, std::string>> log_entries;
   {
-    std::unique_lock<std::mutex> lock(thread_message_mutex_);
+    std::unique_lock lock(thread_message_mutex_);
 
     // Plop the data on to the list; we're assuming the mutex is locked.
     thread_messages_.push_back(t);
@@ -742,11 +735,11 @@ auto EventLoop::CheckPushSafety() -> bool {
   }
 }
 auto EventLoop::CheckPushRunnableSafety() -> bool {
-  std::scoped_lock lock(client_listener_mutex_);
+  std::unique_lock lock(thread_message_mutex_);
 
   // We first complain when we get to 1000 queued messages so
   // let's consider things unsafe when we're halfway there.
-  return (thread_messages_.size() < kThreadMessageSafetyThreshold);
+  return thread_messages_.size() < kThreadMessageSafetyThreshold;
 }
 
 }  // namespace ballistica

src/meta/babasemeta/pyembed/binding_base_app.py

@@ -12,4 +12,5 @@ values = [
     babase.app.handle_deep_link,  # kDeepLinkCall
     babase.app.lang.get_resource,  # kGetResourceCall
     babase.app.lang.translate,  # kTranslateCall
+    babase.app.push_apply_app_config,  # kPushApplyAppConfigCall
 ]

tools/efrotools/pybuild.py

@@ -18,7 +18,7 @@ if TYPE_CHECKING:
 
 # Python version we build here (not necessarily same as we use in repo).
 PY_VER_ANDROID = '3.11'
-PY_VER_EXACT_ANDROID = '3.11.3'
+PY_VER_EXACT_ANDROID = '3.11.4'
 PY_VER_APPLE = '3.11'
 PY_VER_EXACT_APPLE = '3.11.3'