2.2.0 (pre-release)

* This version will be released after
  all the locales will be updated
- added `HDiffPatch` class to work with HDiffPatch (https://github.com/sisong/HDiffPatch)
- added 2 new launcher states
  + game-files-changes-applying-required
  + game-outdated-files-deletion-required
- added `.hdiff` files changes applying
- updated dependencies

From previous commits:
- fixed an issue with log files' name generation
  It seems that on some specific file systems(?) `stat -c '%W' <file>`
  returns `0` as a file creation timestamp
- updated Italian

neutralino.config.json

@@ -1,6 +1,6 @@
 {
   "applicationId": "com.gitlab.KRypt0n_.an-anime-game-launcher",
-  "version": "2.1.5",
+  "version": "2.2.0",
   "defaultMode": "window",
   "port": 0,
   "documentRoot": "/bundle/",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "an-anime-game-launcher",
-  "version": "2.1.5",
+  "version": "2.2.0",
   "license": "GPL-3.0",
   "type": "module",
   "scripts": {
@@ -18,17 +18,17 @@
     "yaml": "^1.10.2"
   },
   "devDependencies": {
-    "@neutralinojs/neu": "^9.1.2",
+    "@neutralinojs/neu": "^9.2.0",
     "@sveltejs/vite-plugin-svelte": "^1.0.0-next.37",
     "@tsconfig/svelte": "^3.0.0",
     "@types/js-md5": "^0.4.3",
     "neutralino-appimage-bundler": "^1.3.2",
-    "sass": "^1.49.7",
+    "sass": "^1.49.8",
     "svelte": "^3.46.4",
-    "svelte-check": "^2.4.3",
+    "svelte-check": "^2.4.5",
     "svelte-preprocess": "^4.10.3",
     "tslib": "^2.3.1",
     "typescript": "^4.5.5",
-    "vite": "^2.8.2"
+    "vite": "^2.8.4"
   }
 }

public/hdiffpatch/LICENSE

@@ -0,0 +1,48 @@
+MIT License
+
+HDiffPatch
+Copyright (c) 2012-2021 housisong
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+----------------------------------------------------------------------------------
+
+libdivsufsort
+Copyright (c) 2003-2008 Yuta Mori All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.

public/locales/de-de.yaml

@@ -23,6 +23,7 @@ launcher:
     game:
       downloading: Spiel ist am herunterladen...
       unpacking: Spiel wird entpackt...
+      applying_changes: Änderungen werden angewandt...
       deleting_outdated: Lösche veraltete dateien...
     
     # Voice packages installation
@@ -39,6 +40,14 @@ launcher:
       install_dxvk: DXVK installieren
       install: Installieren
       update: Updaten
+      
+      apply_changes:
+        title: Änderungen anwenden
+        hint: hdiff-Änderungen an den Spieldateien anwenden
+
+      remove_outdated:
+        title: Alte Dateien löschen 
+        hint: Veraltete Dateien löschen 
 
     # When the game should be patched
     patching:
@@ -292,6 +301,11 @@ notifications:
     title: An Anime Game Launcher
     body: Alle Patch-Repositories sind nicht verfügbar. Sie können das Spiel starten aber der Launcher kann sich nicht sicher sein dass es gepatcht ist.
 
+  # HDiffPatch couldn't successfully apply game files changes
+  game_changes_applying_error:
+    title: Ein Fehler geschah, während das Spiel aktualisiert wurde
+    body: '{files} Dateien konnten nicht aktualisiert werden'
+
 # ToS violation warning window
 tos_violation:
   title: ToS-Verletzungswarnung

public/locales/en-us.yaml

@@ -23,6 +23,7 @@ launcher:
     game:
       downloading: Downloading game...
       unpacking: Unpacking game...
+      applying_changes: Applying changes...
       deleting_outdated: Deleting outdated files...
 
     # Voice packages installation
@@ -39,6 +40,14 @@ launcher:
       install_dxvk: Install DXVK
       install: Install
       update: Update
+      
+      apply_changes:
+        title: Apply changes
+        hint: Apply hdiff changes to the game files
+
+      remove_outdated:
+        title: Remove outdated
+        hint: Remove outdated game files
 
     # When the game should be patched
     patching:
@@ -291,6 +300,11 @@ notifications:
     title: An Anime Game Launcher
     body: None of the patch repositories are available. You'll be able to run the game, but launcher can't be sure is it patched properly
 
+  # HDiffPatch couldn't successfully apply game files changes
+  game_changes_applying_error:
+    title: An error occurred during game updating
+    body: '{files} files couldn''t be updated by the hdiff patch'
+
 # ToS violation warning window
 tos_violation:
   title: ToS violation warning

public/locales/es-es.yaml

@@ -23,6 +23,7 @@ launcher:
     game:
       downloading: Descargando el juego...
       unpacking: Descomprimiendo el juego...
+      applying_changes: Applying changes...
       deleting_outdated: Borrando archivos viejos...
 
     # Instalación de paquetes de voz
@@ -39,6 +40,14 @@ launcher:
       install_dxvk: Instalar DXVK
       install: Instalar
       update: Actualizar
+      
+      apply_changes:
+        title: Apply changes
+        hint: Apply hdiff changes to the game files
+
+      remove_outdated:
+        title: Remove outdated
+        hint: Remove outdated game files
 
     # Cuando el juego debe ser parcheado
     patching:
@@ -290,6 +299,11 @@ notifications:
     title: An Anime Game Launcher
     body: Ninguno de los repositorios del parche está disponible. Podrás ejecutar el juego, pero no podemos asegurar que el parche esté aplicado correctamente
 
+  # HDiffPatch couldn't successfully apply game files changes
+  game_changes_applying_error:
+    title: An error occurred during game updating
+    body: '{files} files couldn''t be updated by the hdiff patch'
+
 # ToS violation warning window
 tos_violation:
   title: Advertencia de violación de ToS

public/locales/fr-fr.yaml

@@ -23,6 +23,7 @@ launcher:
     game:
       downloading: Téléchargement du jeu...
       unpacking: Décompression du jeu...
+      applying_changes: Applying changes...
       deleting_outdated: Suppression des fichiers non à jour...
 
     # Voice packages installation
@@ -39,6 +40,14 @@ launcher:
       install_dxvk: Installer DXVK
       install: Installer
       update: Mise à jour
+      
+      apply_changes:
+        title: Apply changes
+        hint: Apply hdiff changes to the game files
+
+      remove_outdated:
+        title: Remove outdated
+        hint: Remove outdated game files
 
     # When the game should be patched
     patching:
@@ -299,6 +308,11 @@ notifications:
     title: An Anime Game Launcher
     body: Pas tous les dépôts des patchs sont disponibles. Vous pouvez lancer le jeu, mais le Launcher ne peut pas garantir que celui-ci est correctement patcher
 
+  # HDiffPatch couldn't successfully apply game files changes
+  game_changes_applying_error:
+    title: An error occurred during game updating
+    body: '{files} files couldn''t be updated by the hdiff patch'
+
 # ToS violation warning window
 tos_violation:
   title: Violation du contrat d'utilisation

public/locales/hu-hu.yaml

@@ -23,6 +23,7 @@ launcher:
     game:
       downloading: Játék letöltése folyamatban...
       unpacking: Játék kibontása folyamatban...
+      applying_changes: Applying changes...
       deleting_outdated: Lejárt fájlok kitörlése...
 
     # Voice packages installation
@@ -39,6 +40,14 @@ launcher:
       install_dxvk: DXVK telepítése
       install: Telepítés
       update: Frissítés
+      
+      apply_changes:
+        title: Apply changes
+        hint: Apply hdiff changes to the game files
+
+      remove_outdated:
+        title: Remove outdated
+        hint: Remove outdated game files
 
     # When the game should be patched
     patching:
@@ -291,6 +300,11 @@ notifications:
     title: An Anime Game Launcher
     body: A patch adattárjai nem elérhetőek. Eltudod indítani a játékot, de a launcher nem tudja meghatározni hogy patch-elve van-e
 
+  # HDiffPatch couldn't successfully apply game files changes
+  game_changes_applying_error:
+    title: An error occurred during game updating
+    body: '{files} files couldn''t be updated by the hdiff patch'
+
 # ToS violation warning window
 tos_violation:
   title: Felhasználói feltételek megsértése

public/locales/id-id.yaml

@@ -23,6 +23,7 @@ launcher:
     game:
       downloading: Mengunduh game...
       unpacking: Membongkar game...
+      applying_changes: Applying changes...
       deleting_outdated: Menghapus file lama...
 
     # Voice packages installation
@@ -39,6 +40,14 @@ launcher:
       install_dxvk: Pasang DXVK
       install: Pasang
       update: Perbarui
+      
+      apply_changes:
+        title: Apply changes
+        hint: Apply hdiff changes to the game files
+
+      remove_outdated:
+        title: Remove outdated
+        hint: Remove outdated game files
 
     # When the game should be patched
     patching:
@@ -291,6 +300,11 @@ notifications:
     title: An Anime Game Launcher
     body: Semua repositori patch tidak terseidia. Kamu dapat menjalankan game ini, tetapi peluncur tidak tahu secara pasti pakah patch sudah terpasang dengan benar
 
+  # HDiffPatch couldn't successfully apply game files changes
+  game_changes_applying_error:
+    title: An error occurred during game updating
+    body: '{files} files couldn''t be updated by the hdiff patch'
+
 # ToS violation warning window
 tos_violation:
   title: Peringatan pelanggaran Ketentuan Layanan (ToS)

public/locales/it-it.yaml

@@ -23,6 +23,7 @@ launcher:
     game:
       downloading: Scaricando il gioco...
       unpacking: Decomprimendo il gioco...
+      applying_changes: Applying changes...
       deleting_outdated: Cancellando file vecchi...
 
     # Voice packages installation
@@ -39,6 +40,14 @@ launcher:
       install_dxvk: Installa DXVK
       install: Installa
       update: Aggiorna
+      
+      apply_changes:
+        title: Apply changes
+        hint: Apply hdiff changes to the game files
+
+      remove_outdated:
+        title: Remove outdated
+        hint: Remove outdated game files
 
     # When the game should be patched
     patching:
@@ -290,6 +299,11 @@ notifications:
     body: Tutte le repository della patch non sono disponibili. Puoi avviare il gioco,
           ma il launcher non si può assicurare che la patch è stata applicata correttamente
 
+  # HDiffPatch couldn't successfully apply game files changes
+  game_changes_applying_error:
+    title: An error occurred during game updating
+    body: '{files} files couldn''t be updated by the hdiff patch'
+
 # ToS violation warning window
 tos_violation:
   title: Avviso di violazione ToS

public/locales/nb-no.yaml

@@ -23,6 +23,7 @@ launcher:
     game:
       downloading: Laster ned spill...
       unpacking: Pakker ut spill...
+      applying_changes: Applying changes...
       deleting_outdated: Fjerner utdaterte filer...
 
     # Voice packages installation
@@ -39,6 +40,14 @@ launcher:
       install_dxvk: Installer DXVK
       install: Installer
       update: Oppdater
+      
+      apply_changes:
+        title: Apply changes
+        hint: Apply hdiff changes to the game files
+
+      remove_outdated:
+        title: Remove outdated
+        hint: Remove outdated game files
 
     # When the game should be patched
     patching:
@@ -291,6 +300,11 @@ notifications:
     title: An Anime Game Launcher
     body: Ingen av patch oppbevaringstedene er tilgjengelig. Det er mulig å kjøre spillet, men det er ikke mulig å forsikre seg at spillet er patchet riktig
 
+  # HDiffPatch couldn't successfully apply game files changes
+  game_changes_applying_error:
+    title: An error occurred during game updating
+    body: '{files} files couldn''t be updated by the hdiff patch'
+
 # ToS violation warning window
 tos_violation:
   title: ToS brudd advarsel

public/locales/ru-ru.yaml

@@ -23,6 +23,7 @@ launcher:
     game:
       downloading: Скачивание игры...
       unpacking: Распаковка игры...
+      applying_changes: Применение изменений...
       deleting_outdated: Удаление устаревших файлов...
 
     # Установка звуковых пакетов
@@ -40,6 +41,14 @@ launcher:
       install: Установить
       update: Обновить
 
+      apply_changes:
+        title: Применить изменения
+        hint: Применить hdiff изменения к файлам игры
+
+      remove_outdated:
+        title: Удалить устаревшее
+        hint: Удалить устаревшие файлы игры
+
     # Когда игра должна быть пропатчена
     patching:
       # Патч недоступен
@@ -290,6 +299,11 @@ notifications:
     title: An Anime Game Launcher
     body: Все репозитории патча недоступны. Вы сможете запустить игру, однако лаунчер не может знать пропатчена ли она корректно
 
+  # HDiffPatch не смог успешно применить hdiff патчи к файлам игры
+  game_changes_applying_error:
+    title: Возникла ошибка во время обновления игры
+    body: '{files} файлов не смогли быть обновлены с помощью hdiff патча'
+
 # Окно предупреждения о нарушении условий использования
 tos_violation:
   title: Предупреждение о нарушении правил использования

public/locales/uwu.yaml

@@ -23,6 +23,7 @@ launcher:
     game:
       downloading: downwoading game... -.-
       unpacking: unpacking g-game (o^▽^o)
+      applying_changes: appwying changes...
       deleting_outdated: deweting outdated fiwes...
       
     # Voice packages installation
@@ -39,6 +40,14 @@ launcher:
       install_dxvk: install DXVK (◕ ω ◕✿)
       install: install
       update: u-update (／≧ ω＼)
+      
+      apply_changes:
+        title: appwy changes
+        hint: appwy hdiff changes to the game files
+
+      remove_outdated:
+        title: wemove outdated
+        hint: wemove outdated game files
 
     # When the game should be patched
     patching:
@@ -290,6 +299,11 @@ notifications:
     title: an anime game waunchew
     body: a-all the patch wepositowies are not avaiwable. you'll b-be able to wun the game, but waunchew can't be sure is it patched pwopewwy
 
+  # HDiffPatch couldn't successfully apply game files changes
+  game_changes_applying_error:
+    title: an ewwow o-occuwwed duwing game updating
+    body: '{files} files couwdn''t b-be updated b-by the hdiff patch'
+
 # ToS violation warning window
 tos_violation:
   title: ToS violation warning

scripts/bundle-appimage.cjs

@@ -39,7 +39,7 @@ const bundler = new Bundler({
     output: path.join(__dirname, '../dist/An Anime Game Launcher.AppImage'),
 
     // Application version
-    version: '2.1.5'
+    version: '2.2.0'
 });
 
 // Bundle project

src/ts/core/HDiffPatch.ts

@@ -0,0 +1,23 @@
+import { Debug } from '../../empathize';
+import { path } from '../../empathize';
+
+declare const Neutralino;
+
+export default class HDiffPatch
+{
+    public static patch(file: string, patch: string, output: string): Promise<boolean>
+    {
+        return new Promise(async (resolve) => {
+            let result = await Neutralino.os.execCommand(`./public/hdiffpatch/hpatchz -f "${path.addSlashes(file)}" "${path.addSlashes(patch)}" "${path.addSlashes(output)}"`);
+
+            result = (result.stdOut ?? result.stdErr).includes('patch ok!');
+
+            Debug.log({
+                function: 'HDiffPatch.patch',
+                message: { file, patch, output, result }
+            });
+
+            resolve(result);
+        });
+    }
+};

src/ts/launcher/State.ts

@@ -38,6 +38,8 @@ export default class State
         'game-installation-available': import('./states/Install'),
         'game-update-available': import('./states/Install'),
         'game-voice-update-required': import('./states/InstallVoice'),
+        'game-files-changes-applying-required': import('./states/ApplyChanges'),
+        'game-outdated-files-deletion-required': import('./states/RemoveOutdated'),
 
         'test-patch-available': import('./states/ApplyPatch'),
         'patch-available': import('./states/ApplyPatch'),
@@ -254,6 +256,20 @@ export default class State
 
                 break;
 
+            case 'game-files-changes-applying-required':
+                this.launchButton.textContent = dictionary['installation']['apply_changes']['title'];
+
+                this.launchButton.setAttribute('aria-label', dictionary['installation']['apply_changes']['hint']);
+
+                break;
+
+            case 'game-outdated-files-deletion-required':
+                this.launchButton.textContent = dictionary['installation']['remove_outdated']['title'];
+
+                this.launchButton.setAttribute('aria-label', dictionary['installation']['remove_outdated']['hint']);
+
+                break;
+
             case 'patch-available':
                 this.launchButton.textContent = dictionary['patching']['stable'];
 
@@ -385,67 +401,78 @@ export default class State
                         
                         else
                         {
-                            const installedVoices = await Voice.installed;
+                            const gameDir = await constants.paths.gameDir;
-                            const selectedVoices = await Voice.selected;
 
-                            let voiceUpdateRequired = installedVoices.length != selectedVoices.length || installedVoices.length === 0;
+                            if (await fs.exists(`${gameDir}/hdifffiles.txt`))
+                                state = 'game-files-changes-applying-required';
 
-                            if (!voiceUpdateRequired)
+                            else if (await fs.exists(`${gameDir}/deletefiles.txt`))
-                            {
+                                state = 'game-outdated-files-deletion-required';
-                                for (const installedVoice of installedVoices)
-                                    if (installedVoice.version != gameCurrent || !selectedVoices.includes(installedVoice.lang))
-                                    {
-                                        voiceUpdateRequired = true;
-
-                                        break;
-                                    }
-                            }
-
-                            // TODO: download default voice language if user removed all of them
-                            if (voiceUpdateRequired)
-                                state = 'game-voice-update-required';
 
                             else
                             {
-                                try
+                                const installedVoices = await Voice.installed;
-                                {
+                                const selectedVoices = await Voice.selected;
-                                    const patch = await Patch.latest;
 
-                                    // If the latest game version is, for example, 2.3.0
+                                let voiceUpdateRequired = installedVoices.length != selectedVoices.length || installedVoices.length === 0;
-                                    // and the patch is 2.4.0 preparation, it means that
+
-                                    // 2.4.0 will be released soon, but since it's still not released
+                                if (!voiceUpdateRequired)
-                                    // we shouldn't show something about it to user and just let him play the game
+                                {
-                                    if (gameLatest.game.latest.version === patch.version && !patch.applied)
+                                    for (const installedVoice of installedVoices)
+                                        if (installedVoice.version != gameCurrent || !selectedVoices.includes(installedVoice.lang))
+                                        {
+                                            voiceUpdateRequired = true;
+
+                                            break;
+                                        }
+                                }
+
+                                // TODO: download default voice language if user removed all of them
+                                if (voiceUpdateRequired)
+                                    state = 'game-voice-update-required';
+
+                                else
+                                {
+                                    try
                                     {
-                                        state = patch.state == 'preparation' ?
+                                        const patch = await Patch.latest;
-                                            'patch-unavailable' : (patch.state == 'testing' ?
+
-                                            'test-patch-available' : 'patch-available');
+                                        // If the latest game version is, for example, 2.3.0
+                                        // and the patch is 2.4.0 preparation, it means that
+                                        // 2.4.0 will be released soon, but since it's still not released
+                                        // we shouldn't show something about it to user and just let him play the game
+                                        if (gameLatest.game.latest.version === patch.version && !patch.applied)
+                                        {
+                                            state = patch.state == 'preparation' ?
+                                                'patch-unavailable' : (patch.state == 'testing' ?
+                                                'test-patch-available' : 'patch-available');
+                                        }
+
+                                        // Patch is more important than game pre-downloading
+                                        // because otherwise we will not be able to play the game
+                                        else if (gameLatest.pre_download_game && !await Game.isUpdatePredownloaded())
+                                            state = 'game-pre-installation-available';
+
+                                        else if (gameLatest.pre_download_game && !await Voice.isUpdatePredownloaded(await Voice.selected))
+                                            state = 'game-voice-pre-installation-available';
+
+                                        else state = 'game-launch-available';
                                     }
 
-                                    // Patch is more important than game pre-downloading
+                                    // Patch.latest can throw an error if all of patch's servers
-                                    // because otherwise we will not be able to play the game
+                                    // are not available, and we must notify user about that
-                                    else if (gameLatest.pre_download_game && !await Game.isUpdatePredownloaded())
+                                    catch
-                                        state = 'game-pre-installation-available';
+                                    {
+                                        state = 'game-launch-available';
 
-                                    else if (gameLatest.pre_download_game && !await Voice.isUpdatePredownloaded(await Voice.selected))
+                                        Notification.show({
-                                        state = 'game-voice-pre-installation-available';
+                                            ...(Locales.translate('notifications.patch_repos_unavailable') as { title: string, body: string }),
-
+                                            icon: `${constants.paths.appDir}/public/images/baal64-transparent.png`,
-                                    else state = 'game-launch-available';
+                                            importance: 'critical'
+                                        });
+                                    }
                                 }
-
+                            }
-                                // Patch.latest can throw an error if all of patch's servers
-                                // are not available, and we must notify user about that
-                                catch
-                                {
-                                    state = 'game-launch-available';
-
-                                    Notification.show({
-                                        ...(Locales.translate('notifications.patch_repos_unavailable') as { title: string, body: string }),
-                                        icon: `${constants.paths.appDir}/public/images/baal64-transparent.png`,
-                                        importance: 'critical'
-                                    });
-                                }
-                            }  
                         }
                     }
 

src/ts/launcher/states/ApplyChanges.ts

@@ -0,0 +1,95 @@
+import type Launcher from '../../Launcher';
+
+import { Debug, Notification, fs } from '../../../empathize';
+
+import constants from '../../Constants';
+import Locales from '../Locales';
+import HDiffPatch from '../../core/HDiffPatch';
+
+declare const Neutralino;
+
+export default (launcher: Launcher): Promise<void> => {
+    return new Promise(async (resolve) => {
+        const gameDir = await constants.paths.gameDir;
+
+        Neutralino.filesystem.readFile(`${gameDir}/hdifffiles.txt`)
+            .then(async (files) => {
+                let patchErrors = 0;
+
+                files = files.split(/\r\n|\r|\n/).filter((file) => file != '');
+
+                if (files.length > 0)
+                {
+                    launcher.progressBar?.init({
+                        label: Locales.translate('launcher.progress.game.applying_changes') as string,
+                        showSpeed: false,
+                        showEta: true,
+                        showPercents: true,
+                        showTotals: false
+                    });
+
+                    launcher.progressBar?.show();
+
+                    let current = 0, total = files.length;
+
+                    for (const file of files)
+                    {
+                        // {"remoteName": "AnAnimeGame_Data/StreamingAssets/Audio/GeneratedSoundBanks/Windows/Banks0.pck"}
+                        const filePatchInfo = JSON.parse(file) as { remoteName: string };
+
+                        if (await fs.exists(`${gameDir}/${filePatchInfo.remoteName}.hdiff`))
+                        {
+                            const patchResult = await HDiffPatch.patch(
+                                `${gameDir}/${filePatchInfo.remoteName}`,
+                                `${gameDir}/${filePatchInfo.remoteName}.hdiff`,
+                                `${gameDir}/${filePatchInfo.remoteName}.hdiff_patched`
+                            );
+
+                            if (patchResult)
+                            {
+                                await Neutralino.filesystem.removeFile(`${gameDir}/${filePatchInfo.remoteName}`);
+                                await Neutralino.filesystem.removeFile(`${gameDir}/${filePatchInfo.remoteName}.hdiff`);
+
+                                await Neutralino.filesystem.moveFile(
+                                    `${gameDir}/${filePatchInfo.remoteName}.hdiff_patched`,
+                                    `${gameDir}/${filePatchInfo.remoteName}`
+                                );
+                            }
+
+                            else ++patchErrors;
+                        }
+
+                        launcher.progressBar?.update(++current, total, 1);
+                    }
+
+                    if (patchErrors > 0)
+                    {
+                        const locale = Locales.translate('notifications.game_changes_applying_error') as { title: string, body: string };
+                        
+                        Notification.show({
+                            title: locale.title,
+                            body: locale.body.replace('{files}', patchErrors.toString()),
+                            icon: `${constants.paths.appDir}/public/images/baal64-transparent.png`,
+                            importance: 'critical'
+                        });
+                    }
+
+                    Debug.log({
+                        function: 'Launcher/States/Install',
+                        message: [
+                            `Applied changes${patchErrors > 0 ? ` (${patchErrors} errors)` : ''}:`,
+                            ...files
+                        ]
+                    });
+                }
+
+                if (patchErrors === 0)
+                    await Neutralino.filesystem.removeFile(`${gameDir}/hdifffiles.txt`);
+
+                launcher.progressBar?.hide();
+
+                resolve();
+            })
+            .catch(() => resolve());
+    });
+};

src/ts/launcher/states/Install.ts

@@ -1,15 +1,10 @@
-import { get as svelteget } from 'svelte/store';
-import { _ } from 'svelte-i18n';
-
 import type Launcher from '../../Launcher';
 
-import { Debug } from '../../../empathize';
-
 import Game from '../../Game';
 import Prefix from '../../core/Prefix';
 import constants from '../../Constants';
-
+import Locales from '../Locales';
-declare const Neutralino;
+import { promisify } from '@empathize/framework';
 
 export default (launcher: Launcher): Promise<void> => {
     return new Promise(async (resolve) => {
@@ -31,7 +26,7 @@ export default (launcher: Launcher): Promise<void> => {
 
             Game.update(prevGameVersion).then((stream) => {
                 launcher.progressBar?.init({
-                    label: svelteget(_)('launcher.progress.game.downloading'),
+                    label: Locales.translate('launcher.progress.game.downloading') as string,
                     showSpeed: true,
                     showEta: true,
                     showPercents: true,
@@ -48,14 +43,14 @@ export default (launcher: Launcher): Promise<void> => {
                     {
                         stream?.pauseDownload();
 
-                        launcher.state!.pauseButton.textContent = svelteget(_)('launcher.progress.resume');
+                        launcher.state!.pauseButton.textContent = Locales.translate('launcher.progress.resume') as string;
                     }
 
                     else
                     {
                         stream?.resumeDownload();
 
-                        launcher.state!.pauseButton.textContent = svelteget(_)('launcher.progress.pause');
+                        launcher.state!.pauseButton.textContent = Locales.translate('launcher.progress.pause') as string;
                     }
 
                     paused = !paused;
@@ -69,7 +64,7 @@ export default (launcher: Launcher): Promise<void> => {
     
                 stream?.unpackStart(() => {
                     launcher.progressBar?.init({
-                        label: svelteget(_)('launcher.progress.game.unpacking'),
+                        label: Locales.translate('launcher.progress.game.unpacking') as string,
                         showSpeed: true,
                         showEta: true,
                         showPercents: true,
@@ -87,56 +82,31 @@ export default (launcher: Launcher): Promise<void> => {
                 });
     
                 stream?.unpackFinish(async () => {
-                    const gameDir = await constants.paths.gameDir;
+                    // Hide pause/resume button
+                    launcher.state!.pauseButton.style['display'] = 'none';
 
-                    // Deleting outdated files
+                    await promisify({
-                    Neutralino.filesystem.readFile(`${gameDir}/deletefiles.txt`)
+                        callbacks: [
-                        .then(async (files) => {
+                            // Applying game's files changes
-                            files = files.split(/\r\n|\r|\n/).filter((file) => file != '');
+                            (): Promise<void> => new Promise((resolve) => {
-
+                                import('./ApplyChanges').then((module) => {
-                            if (files.length > 0)
+                                    module.default(launcher).then(() => resolve());
-                            {
-                                launcher.progressBar?.init({
-                                    label: svelteget(_)('launcher.progress.game.deleting_outdated'),
-                                    showSpeed: false,
-                                    showEta: true,
-                                    showPercents: true,
-                                    showTotals: false
                                 });
+                            }),
 
-                                let current = 0, total = files.length;
+                            // Deleting outdated files
-
+                            (): Promise<void> => new Promise((resolve) => {
-                                for (const file of files)
+                                import('./RemoveOutdated').then((module) => {
-                                {
+                                    module.default(launcher).then(() => resolve());
-                                    await Neutralino.filesystem.removeFile(`${gameDir}/${file}`);
-
-                                    launcher.progressBar?.update(++current, total, 1);
-                                }
-                                
-                                Debug.log({
-                                    function: 'Launcher/States/Install',
-                                    message: [
-                                        'Deleted outdated files:',
-                                        ...files
-                                    ]
                                 });
-                            }
+                            })
-
+                        ]
-                            await Neutralino.filesystem.removeFile(`${gameDir}/deletefiles.txt`);
+                    });
-
-                            installVoice();
-                        })
-                        .catch(() => installVoice());
 
                     // Download voice package when the game itself has been installed
-                    const installVoice = () => {
+                    import('./InstallVoice').then((module) => {
-                        // Hide pause/resume button
+                        module.default(launcher).then(() => resolve());
-                        launcher.state!.pauseButton.style['display'] = 'none';
+                    });
-
-                        import('./InstallVoice').then((module) => {
-                            module.default(launcher).then(() => resolve());
-                        });
-                    };
                 });
             });
         };

src/ts/launcher/states/RemoveOutdated.ts

@@ -0,0 +1,56 @@
+import type Launcher from '../../Launcher';
+
+import { Debug } from '../../../empathize';
+
+import constants from '../../Constants';
+import Locales from '../Locales';
+
+declare const Neutralino;
+
+export default (launcher: Launcher): Promise<void> => {
+    return new Promise(async (resolve) => {
+        const gameDir = await constants.paths.gameDir;
+
+        Neutralino.filesystem.readFile(`${gameDir}/deletefiles.txt`)
+            .then(async (files) => {
+                files = files.split(/\r\n|\r|\n/).filter((file) => file != '');
+
+                if (files.length > 0)
+                {
+                    launcher.progressBar?.init({
+                        label: Locales.translate('launcher.progress.game.deleting_outdated') as string,
+                        showSpeed: false,
+                        showEta: true,
+                        showPercents: true,
+                        showTotals: false
+                    });
+
+                    launcher.progressBar?.show();
+
+                    let current = 0, total = files.length;
+
+                    for (const file of files)
+                    {
+                        await Neutralino.filesystem.removeFile(`${gameDir}/${file}`);
+
+                        launcher.progressBar?.update(++current, total, 1);
+                    }
+                    
+                    Debug.log({
+                        function: 'Launcher/States/RemoveOutdated',
+                        message: [
+                            'Deleted outdated files:',
+                            ...files
+                        ]
+                    });
+                }
+
+                await Neutralino.filesystem.removeFile(`${gameDir}/deletefiles.txt`);
+
+                launcher.progressBar?.hide();
+
+                resolve();
+            })
+            .catch(() => resolve());
+    });
+};

src/ts/types/Launcher.ts

@@ -21,6 +21,8 @@ type LauncherState =
     | 'game-installation-available'
     | 'game-update-available'
     | 'game-voice-update-required'
+    | 'game-files-changes-applying-required'
+    | 'game-outdated-files-deletion-required'
     | 'game-pre-installation-available'
     | 'game-voice-pre-installation-available'
     | 'game-launch-available';