Interface update and code improvements, translation

README.md

@@ -1,10 +1,48 @@
 # JDarkroom
-This is a simple, completely offline reimplementation of Darkroom website<br>
+### ENG
-that existed a while ago, but now it is offline. Using JDarkroom you can retrieve<br>
+This is a simple, completely offline reimplementation of the Darkroom website that existed<br>
-locker code in Akuda bar by dropping a save file here or by entering an Internet code.<br>
+a while ago, but now it is offline. Using JDarkroom you can retrieve locker code in Akuda bar.<br>
+There are two ways how you can do that:
+- By dropping a save file here (slot[0-4].sav)
+- Enter an Internet code that you can find at the bottom of the screen when you are about to save your game.<br>
+
+Example of an Internet code: ```fCe\w9!iBXJ1ijn&```<br>
 Both Russian and English game versions are supported.
 
+***A note***<br>
+This app would not exist, if it was not this super helpful article: https://9214.github.io/13
+
+Why did I make this if there are online websites that are much more similar to the original Darkroom?<br>
+As the author of this article said, these can go offline at any time, but with this tool you don't have to<br>
+worry about that, because this app will just be stored on your pc as a single file.
+
+
+### РУС
+Это простая, не требующая интернет-соединения программа, которая повторяет функционал сайта Darkroom,<br>
+который существовал раньше, однако, теперь он больше не доступен. Используя JDarkroom вы можете получить код от шкафа в баре Акуда.<br>
+Сделать это можно двумя способами:
+- Перенести в окно программы файл сохранения (slot[0-4].sav)
+- Ввести специальный Интернет-код, который вы можете найти внизу вашего экрана при сохранении игры.<br>
+
+Пример Интернет-кода: ```fCe\w9!iBXJ1ijn&```<br>
+Поддерживаются Английская и Русская версии игры.
+
+***Заметка***<br>
+Это приложение не существовало бы, если бы не эта суперполезная статья: https://9214.github.io/13
+
+Зачем я создал это приложение, ведь уже существуют сайты, которые очень похожи на оригинальный Darkroom?<br>
+Как сказал автор этой статьи, эти веб-сайты, так же как и оригинальный, могут быть отключены в любое время,<br>
+но с этим приложением вам не стоит переживать, ведь оно просто будет находится у вас на компьютере в виде одного файла.
+
 ### Screenshots
+#### You can drop save file here:
 ![Drop Save Here](DropSave.png)
-![Code Field](CodeField.png)
+
+#### An example:
+![Example Code](ExampleCode.png)
+
+#### Code that resulted from ```fCe\w9!iBXJ1ijn&```:
+![Decoded Code](DecodedCode.png)
+
+#### If you enter wrong code:
 ![Incorrect Code Entered](IncorrectCode.png)

build.bat

@@ -0,0 +1,8 @@
+@ECHO OFF
+set pkg=me\theentropyshard\jdarkroom
+mkdir out
+javac -encoding utf8 -classpath src\%pkg% -d out -sourcepath . src\%pkg%\*.java
+cd out
+jar cfe0 JDarkroom.jar me.theentropyshard.jdarkroom.Main %pkg%\*.class -C ..\resources .
+move JDarkroom.jar ..\
+cd ..\

resources/readme.txt

@@ -0,0 +1,4 @@
+background.png taken from the Internet, resized and darkened
+mdisk.ico taken from https://github.com/9214/daruma, I sent an email asking for
+this icon, at the moment of writing this, author still not answered, but the license is
+WTFPL, so I think it is OK to take this icon.

run-en.bat

@@ -0,0 +1,2 @@
+@ECHO OFF
+java -jar JDarkroom.jar en-US

run-ru.bat

@@ -0,0 +1,2 @@
+@ECHO OFF
+java -jar JDarkroom.jar ru-RU

src/META-INF/MANIFEST.MF

@@ -0,0 +1,3 @@
+Manifest-Version: 1.0
+Main-Class: me.theentropyshard.jdarkroom.Main
+

src/me/theentropyshard/jdarkroom/Decoder.java

@@ -0,0 +1,97 @@
+/*      JDarkroom. Reimplementation of Darkroom website.
+ *      Copyright (C) 2023 TheEntropyShard
+ *
+ *      This program is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License, or
+ *      (at your option) any later version.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package me.theentropyshard.jdarkroom;
+
+public enum Decoder {
+    ;
+
+    public static String decodeInternetCode(String code) {
+        byte[] bytes = new byte[16];
+        for(int i = 0; i < 16; i++) {
+            bytes[i] = DecodingData.CODE_INDEX_TABLE.get(Character.toString(code.charAt(i)));
+        }
+
+        for(int i = 6; i > 0; i--) {
+            int byte1 = 2 * i + i / 6;
+            int bi1 = i % 6;
+            int byte2 = 15;
+            int bi2 = i - 1;
+
+            Utils.swapBits(byte1, byte2, bi1, bi2, bytes);
+        }
+
+        String bin = Integer.toBinaryString(bytes[bytes.length - 1]);
+        int index = Integer.parseInt(bin.substring(0, 3), 2);
+
+        byte firstRoundKey = DecodingData.KEY[index];
+        byte secondRoundKey = DecodingData.KEY[DecodingData.KEY.length - 1 - index];
+
+        for(int i = 30; i > 0; i--) {
+            int m = (i * firstRoundKey + 45) % 90;
+            int n = (i * secondRoundKey + 45) % 90;
+            int p = m % 6;
+            int q = n % 6;
+
+            int byte1 = (m - p) / 6;
+            int bi1 = p;
+            int byte2 = (n - q) / 6;
+            int bi2 = q;
+
+            Utils.swapBits(byte1, byte2, bi1, bi2, bytes);
+        }
+
+        byte thirdRoundKey = DecodingData.KEY[bytes[bytes.length - 1] & 0b111];
+
+        for(int i = 40; i > 0; i--) {
+            int m = i * thirdRoundKey % 90;
+            int n = m % 6;
+            int byteInd = (m - n) / 6;
+            int bitInd = n;
+
+            bytes[byteInd] ^= (1 << bitInd);
+        }
+
+        return Decoder.readInternetCode(bytes);
+    }
+
+    private static String readInternetCode(byte[] bytes) {
+        int intCode = 0;
+        intCode |= (bytes[8] & (0x1E000000 >> 25)) << 25;
+        intCode |= (bytes[9] & (0x01000000 >> 19)) << 19;
+        intCode |= (bytes[9] & (0x00001F00 >> 8)) << 8;
+        intCode |= (bytes[10] & (0x001F0000 >> 14)) << 14;
+        intCode |= (bytes[10] & (0x0000000C >> 2)) << 2;
+        intCode |= (bytes[11] & (0x00000003 << 4)) >> 4;
+
+        int l1 = Integer.parseInt(Integer.toHexString((intCode >> 24) & 0xFF), 10);
+        int d1 = Integer.parseInt(Integer.toHexString((intCode >> 16) & 0xFF), 16);
+        int l2 = Integer.parseInt(Integer.toHexString((intCode >> 8) & 0xFF), 16);
+        int d2 = Integer.parseInt(Integer.toHexString((intCode >> 0) & 0xFF), 16);
+
+        String[] letters1 = DecodingData.SAVE_INDEX_TABLE.get(l1 + 1).split("\\s");
+        String[] letters2 = DecodingData.SAVE_INDEX_TABLE.get(l2 + 1).split("\\s");
+
+        String russianCode = letters1[1] + d1 + letters2[1] + d2;
+        String englishCode = letters1[0] + d1 + letters2[0] + d2;
+
+        String russianLabel = I18N.getString("codeLabelRu");
+        String englishLabel = I18N.getString("codeLabelEn");
+        String andText = I18N.getString("andText");
+        return String.format("%s: %s %s %s: %s", russianLabel, russianCode, andText, englishLabel, englishCode);
+    }
+}

src/me/theentropyshard/jdarkroom/DecodingData.java

@@ -1,3 +1,20 @@
+/*      JDarkroom. Reimplementation of Darkroom website.
+ *      Copyright (C) 2023 TheEntropyShard
+ *
+ *      This program is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License, or
+ *      (at your option) any later version.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package me.theentropyshard.jdarkroom;
 
 import java.util.Collections;
@@ -68,6 +85,7 @@ public final class DecodingData {
      */
     public static final Map<String, Byte> CODE_INDEX_TABLE = Collections.unmodifiableMap(
             new HashMap<String, Byte>() {{
+                // @formatter:off
                 this.put("A", (byte) 0); this.put("А", (byte) 0);
                 this.put("B", (byte) 1); this.put("Б", (byte) 1);
                 this.put("C", (byte) 2); this.put("Ц", (byte) 2);
@@ -132,6 +150,7 @@ public final class DecodingData {
                 this.put("9", (byte) 61); // this.put("K", (byte) 10);
                 this.put("?", (byte) 62); // this.put("K", (byte) 10);
                 this.put("!", (byte) 63); // this.put("K", (byte) 10);
+                // @formatter:on
             }}
     );
 }

src/me/theentropyshard/jdarkroom/I18N.java

@@ -0,0 +1,64 @@
+/*      JDarkroom. Reimplementation of Darkroom website.
+ *      Copyright (C) 2023 TheEntropyShard
+ *
+ *      This program is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License, or
+ *      (at your option) any later version.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package me.theentropyshard.jdarkroom;
+
+import java.util.HashMap;
+import java.util.Locale;
+import java.util.Map;
+
+public enum I18N {
+    ;
+
+    public static final Locale LOCALE = Locale.getDefault();
+    public static final String LANGUAGE = I18N.LOCALE.getLanguage().toLowerCase(Locale.ROOT);
+
+    private static final Map<String, String> TRANSLATION = new HashMap<>();
+
+    static {
+        I18N.TRANSLATION.put("en.dropFileHere", "<html>Drop save file here! (slot[0-4].sav)<br>Or click to enter Internet code!</html>");
+        I18N.TRANSLATION.put("ru.dropFileHere", "<html>Переместите файл сохранения сюда! (slot[0-4].sav)<br>Или нажмите, чтобы ввести Интернет-код!</html>");
+
+        I18N.TRANSLATION.put("en.enterCodeHere", "Enter Internet code here");
+        I18N.TRANSLATION.put("ru.enterCodeHere", "Введите сюда Интернет-код");
+
+        I18N.TRANSLATION.put("en.submit", "Submit");
+        I18N.TRANSLATION.put("ru.submit", "Отправить");
+
+        I18N.TRANSLATION.put("en.incorrectCodeLength", "Internet code length must be 16 chars!");
+        I18N.TRANSLATION.put("ru.incorrectCodeLength", "Длина Интернет-кода должна быть 16 символов!");
+
+        I18N.TRANSLATION.put("en.badFile", "Bad file given!");
+        I18N.TRANSLATION.put("ru.badFile", "Перемещен плохой файл!");
+
+        I18N.TRANSLATION.put("ru.andText", "и");
+        I18N.TRANSLATION.put("en.andText", "and");
+
+        I18N.TRANSLATION.put("ru.codeLabelRu", "Русский код");
+        I18N.TRANSLATION.put("ru.codeLabelEn", "Английский код");
+
+        I18N.TRANSLATION.put("en.codeLabelRu", "Russian code");
+        I18N.TRANSLATION.put("en.codeLabelEn", "English code");
+    }
+
+    public static String getString(String key) {
+        if(key.indexOf(".") == 2) {
+            return I18N.TRANSLATION.get(key);
+        }
+        return I18N.TRANSLATION.get(I18N.LANGUAGE + "." + key);
+    }
+}

src/me/theentropyshard/jdarkroom/JDarkroom.java

@@ -1,8 +1,21 @@
-package me.theentropyshard.jdarkroom;
+/*      JDarkroom. Reimplementation of Darkroom website.
+ *      Copyright (C) 2023 TheEntropyShard
+ *
+ *      This program is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License, or
+ *      (at your option) any later version.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
 
-import java.io.File;
+package me.theentropyshard.jdarkroom;
-import java.io.IOException;
-import java.io.RandomAccessFile;
 
 public class JDarkroom {
     public JDarkroom() {
@@ -14,134 +27,6 @@ public class JDarkroom {
         new View();
     }
 
-    public String findInSave(File file) {
-        if(file == null || file.isDirectory()) {
-            return null;
-        }
-
-        StringBuilder russianCode = new StringBuilder();
-        StringBuilder englishCode = new StringBuilder();
-        try(RandomAccessFile raf = new RandomAccessFile(file, "r")) {
-            if(raf.length() <= 0) {
-                return null;
-            }
-
-            raf.seek(DecodingData.CODE_OFFSET);
-
-            for(int i = 0; i < 16; i++) {
-                byte b = raf.readByte();
-                if(i % 4 == 0) {
-                    String[] letters = DecodingData.SAVE_INDEX_TABLE.get((int) b).split("\\s");
-                    russianCode.append(letters[1]);
-                    englishCode.append(letters[0]);
-                }
-            }
-        } catch (IOException e) {
-            e.printStackTrace();
-            return null;
-        }
-
-        return russianCode + " or " + englishCode;
-    }
-
-    public String decodeInternetCode(String code) {
-        if(code == null || code.length() != 16) {
-            return null;
-        }
-
-        byte[] bytes = new byte[16];
-        for(int i = 0; i < 16; i++) {
-            bytes[i] = DecodingData.CODE_INDEX_TABLE.get(Character.toString(code.charAt(i)));
-        }
-
-        for(int i = 6; i > 0; i--) {
-            int byte1 = 2 * i + i / 6;
-            int bi1 = i % 6;
-            int byte2 = 15;
-            int bi2 = i - 1;
-
-            JDarkroom.swapBits(byte1, byte2, bi1, bi2, bytes);
-        }
-
-        String bin = Integer.toBinaryString(bytes[bytes.length - 1]);
-        int index = Integer.parseInt(bin.substring(0, 3), 2);
-
-        byte firstRoundKey = DecodingData.KEY[index];
-        byte secondRoundKey = DecodingData.KEY[DecodingData.KEY.length - 1 - index];
-
-        for(int i = 30; i > 0; i--) {
-            int m = (i * firstRoundKey + 45) % 90;
-            int n = (i * secondRoundKey + 45) % 90;
-            int p = m % 6;
-            int q = n % 6;
-
-            int byte1 = (m - p) / 6;
-            int bi1 = p;
-            int byte2 = (n - q) / 6;
-            int bi2 = q;
-
-            JDarkroom.swapBits(byte1, byte2, bi1, bi2, bytes);
-        }
-
-        byte thirdRoundKey = DecodingData.KEY[bytes[bytes.length - 1] & 0b111];
-
-        for(int i = 40; i > 0; i--) {
-            int m = i * thirdRoundKey % 90;
-            int n = m % 6;
-            int byteInd = (m - n) / 6;
-            int bitInd = n;
-
-            bytes[byteInd] ^= (1 << bitInd);
-        }
-
-        int intCode = 0;
-        intCode |= (bytes[8] & (0x1E000000 >> 25)) << 25;
-        intCode |= (bytes[9] & (0x01000000 >> 19)) << 19;
-        intCode |= (bytes[9] & (0x00001F00 >> 8)) << 8;
-        intCode |= (bytes[10] & (0x001F0000 >> 14)) << 14;
-        intCode |= (bytes[10] & (0x0000000C >> 2)) << 2;
-        intCode |= (bytes[11] & (0x00000003 << 4)) >> 4;
-
-        int l1 = Integer.parseInt(Integer.toHexString((intCode >> 24) & 0xFF), 10);
-        int d1 = Integer.parseInt(Integer.toHexString((intCode >> 16) & 0xFF), 16);
-        int l2 = Integer.parseInt(Integer.toHexString((intCode >> 8) & 0xFF), 16);
-        int d2 = Integer.parseInt(Integer.toHexString((intCode >> 0) & 0xFF), 16);
-
-        String[] letters1 = DecodingData.SAVE_INDEX_TABLE.get(l1 + 1).split("\\s");
-        String[] letters2 = DecodingData.SAVE_INDEX_TABLE.get(l2 + 1).split("\\s");
-
-        String russianCode = letters1[1] + d1 + letters2[1] + d2;
-        String englishCode = letters1[0] + d1 + letters2[0] + d2;
-
-        return russianCode + " or " + englishCode;
-    }
-
-    /**
-     * Swaps two different bits in two numbers
-     *
-     * @param byteInd1 Index of first byte
-     * @param byteInd2 Index of second byte
-     * @param bi1      0-based bit from first number, indexed from right
-     * @param bi2      0-based bit from second number, indexed from right
-     * @param bytes    Byte array
-     */
-    public static void swapBits(int byteInd1, int byteInd2, int bi1, int bi2, byte... bytes) {
-        int bit1 = (bytes[byteInd1] >> bi1) & 1;
-        int bit2 = (bytes[byteInd2] >> bi2) & 1;
-
-        if(bit1 == 0) {
-            bytes[byteInd2] &= ~(1 << bi2);
-        } else {
-            bytes[byteInd2] |= 1 << bi2;
-        }
-
-        if(bit2 == 0) {
-            bytes[byteInd1] &= ~(1 << bi1);
-        } else {
-            bytes[byteInd1] |= 1 << bi1;
-        }
-    }
-
     private static JDarkroom instance;
 
     public static JDarkroom getInstance() {

src/me/theentropyshard/jdarkroom/Main.java

@@ -1,11 +1,47 @@
+/*      JDarkroom. Reimplementation of Darkroom website.
+ *      Copyright (C) 2023 TheEntropyShard
+ *
+ *      This program is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License, or
+ *      (at your option) any later version.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package me.theentropyshard.jdarkroom;
 
 import javax.swing.*;
+import java.util.Locale;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 public class Main {
     public static void main(String[] args) {
-        JDialog.setDefaultLookAndFeelDecorated(true);
+        Pattern localePattern = Pattern.compile("([a-z]{2})-([A-Z]{2})$");
-        JFrame.setDefaultLookAndFeelDecorated(true);
+        if(args.length > 0) {
+            Matcher matcher = localePattern.matcher(args[0]);
+            if(matcher.matches()) {
+                try {
+                    String[] langAndCountry = args[0].split("-");
+                    Locale.setDefault(new Locale(langAndCountry[0], langAndCountry[1]));
+                } catch (Exception se) {
+                    se.printStackTrace();
+                }
+            }
+        }
+
+        try {
+            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
+        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ignored) {
+
+        }
 
         new JDarkroom();
     }

src/me/theentropyshard/jdarkroom/SaveFileReader.java

@@ -0,0 +1,59 @@
+/*      JDarkroom. Reimplementation of Darkroom website.
+ *      Copyright (C) 2023 TheEntropyShard
+ *
+ *      This program is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License, or
+ *      (at your option) any later version.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package me.theentropyshard.jdarkroom;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.RandomAccessFile;
+
+public enum SaveFileReader {
+    ;
+
+    public static String findInSave(File file) {
+        if(file == null || file.isDirectory()) {
+            return null;
+        }
+
+        StringBuilder russianCode = new StringBuilder();
+        StringBuilder englishCode = new StringBuilder();
+        try(RandomAccessFile raf = new RandomAccessFile(file, "r")) {
+            if(raf.length() <= 0) {
+                return null;
+            }
+
+            raf.seek(DecodingData.CODE_OFFSET);
+
+            for(int i = 0; i < 16; i++) {
+                byte b = raf.readByte();
+                if(i % 4 == 0) {
+                    String[] letters = DecodingData.SAVE_INDEX_TABLE.get((int) b).split("\\s");
+                    russianCode.append(letters[1]);
+                    englishCode.append(letters[0]);
+                }
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+            return null;
+        }
+
+        String russianLabel = I18N.getString("codeLabelRu");
+        String englishLabel = I18N.getString("codeLabelEn");
+        String andText = I18N.getString("andText");
+        return String.format("%s: %s %s %s: %s", russianLabel, russianCode, andText, englishLabel, englishCode);
+    }
+}

src/me/theentropyshard/jdarkroom/Utils.java

@@ -0,0 +1,73 @@
+/*      JDarkroom. Reimplementation of Darkroom website.
+ *      Copyright (C) 2023 TheEntropyShard
+ *
+ *      This program is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License, or
+ *      (at your option) any later version.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package me.theentropyshard.jdarkroom;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Objects;
+
+public enum Utils {
+    ;
+
+    private static final Map<String, BufferedImage> IMAGE_CACHE = new HashMap<>();
+
+    public static BufferedImage loadImage(String path) {
+        if(Utils.IMAGE_CACHE.containsKey(path)) {
+            return Utils.IMAGE_CACHE.get(path);
+        }
+
+        try {
+            BufferedImage bufferedImage = ImageIO.read(Objects.requireNonNull(Utils.class.getResourceAsStream(path)));
+            Utils.IMAGE_CACHE.put(path, bufferedImage);
+            return bufferedImage;
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        return null;
+    }
+
+    /**
+     * Swaps two different bits in two numbers
+     *
+     * @param byteInd1 Index of first byte
+     * @param byteInd2 Index of second byte
+     * @param bi1      0-based bit from first number, indexed from right
+     * @param bi2      0-based bit from second number, indexed from right
+     * @param bytes    Byte array
+     */
+    public static void swapBits(int byteInd1, int byteInd2, int bi1, int bi2, byte... bytes) {
+        int bit1 = (bytes[byteInd1] >> bi1) & 1;
+        int bit2 = (bytes[byteInd2] >> bi2) & 1;
+
+        if(bit1 == 0) {
+            bytes[byteInd2] &= ~(1 << bi2);
+        } else {
+            bytes[byteInd2] |= 1 << bi2;
+        }
+
+        if(bit2 == 0) {
+            bytes[byteInd1] &= ~(1 << bi1);
+        } else {
+            bytes[byteInd1] |= 1 << bi1;
+        }
+    }
+}

src/me/theentropyshard/jdarkroom/View.java

@@ -1,3 +1,20 @@
+/*      JDarkroom. Reimplementation of Darkroom website.
+ *      Copyright (C) 2023 TheEntropyShard
+ *
+ *      This program is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License, or
+ *      (at your option) any later version.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package me.theentropyshard.jdarkroom;
 
 import javax.swing.*;
@@ -8,107 +25,215 @@ import java.awt.dnd.DropTarget;
 import java.awt.dnd.DropTargetDropEvent;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
+import java.awt.image.BufferedImage;
 import java.io.File;
 import java.util.List;
 
 public final class View extends JPanel {
-    private static final String YOUR_CODE_IS = "Your code is: ";
+    private static final Color TRANSPARENT_COLOR = new Color(255, 255, 255, 96);
-    private static final float FONT_SIZE = 20.0F;
+    private static final Color TRANSPARENT_COLOR_DARKER = View.TRANSPARENT_COLOR.darker().darker().darker();
-    private final JTextField codeField;
+    private static final BufferedImage BACKGROUND = Utils.loadImage("/background.png");
+    private static final int WIDTH = View.BACKGROUND.getWidth();
+    private static final int HEIGHT = View.BACKGROUND.getHeight();
+    private static final Font FONT = new Font("Arial", Font.BOLD, 14);
 
+    private final JLabel resultLabel;
+
+    @SuppressWarnings("unchecked")
     public View() {
-        this.setPreferredSize(new Dimension(800, 600));
+        this.setPreferredSize(new Dimension(View.WIDTH, View.HEIGHT));
 
-        CardLayout cardLayout = new CardLayout();
+        CardLayout cardLayout = new CardLayout(30, 50);
         this.setLayout(cardLayout);
 
-        JLabel codeLabel = new JLabel(View.YOUR_CODE_IS) {{
+        this.resultLabel = new JLabel() {{
             this.setHorizontalAlignment(JLabel.CENTER);
-            this.setFont(this.getFont().deriveFont(View.FONT_SIZE));
+            this.setFont(View.FONT);
-            this.setFocusable(true);
-            this.addMouseListener(new MouseAdapter() {
-                @Override
-                public void mouseClicked(MouseEvent e) {
-                    super.mouseClicked(e);
-                    cardLayout.show(View.this, "DropLabel");
-                }
-            });
         }};
-        this.add(codeLabel, "CodeLabel");
 
-        JLabel dropLabel = new JLabel("Drop save file here, or click to enter Internet Code!", JLabel.CENTER) {{
+        JPanel dropFilePanel = new JPanel() {
-            this.setDropTarget(new DropTarget() {
+            {
-                @Override
+                this.setOpaque(false);
-                public synchronized void drop(DropTargetDropEvent e) {
+                this.setLayout(new GridBagLayout());
-                    try {
+                GridBagConstraints c = new GridBagConstraints();
-                        e.acceptDrop(DnDConstants.ACTION_COPY);
+                c.fill = GridBagConstraints.BOTH;
-                        List<File> droppedFiles = (List<File>) e.getTransferable().getTransferData(DataFlavor.javaFileListFlavor);
+                c.anchor = GridBagConstraints.CENTER;
-                        String code = JDarkroom.getInstance().findInSave(droppedFiles.get(0));
+                this.addMouseListener(new MouseAdapter() {
-                        if(code == null) {
+                    @Override
-                            codeLabel.setText("Incorrect Internet Code entered!");
+                    public void mousePressed(MouseEvent e) {
-                            codeLabel.setForeground(Color.RED);
+                        super.mousePressed(e);
-                            codeField.setText("");
+                        cardLayout.show(View.this, "enterCodePanel");
-                        } else {
+                    }
-                            codeLabel.setForeground(Color.DARK_GRAY);
+                });
-                            codeLabel.setText(View.YOUR_CODE_IS + code);
+                this.add(new JPanel() {
-                        }
+                    {
-                        cardLayout.show(View.this, "CodeLabel");
+                        this.setOpaque(false);
-                        e.dropComplete(true);
+                        this.setBorder(BorderFactory.createLineBorder(Color.DARK_GRAY, 1));
-                    } catch (Exception ex) {
+                        this.add(new JLabel(I18N.getString("dropFileHere")) {{
-                        ex.printStackTrace();
+                            this.setFont(View.FONT);
+                            this.setHorizontalAlignment(JLabel.CENTER);
+                        }});
                     }
-                }
-            });
-            this.addMouseListener(new MouseAdapter() {
-                @Override
-                public void mouseClicked(MouseEvent e) {
-                    super.mouseClicked(e);
-                    cardLayout.show(View.this, "InputPanel");
-                }
-            });
-            this.setFocusable(true);
-            this.setFont(this.getFont().deriveFont(View.FONT_SIZE));
-        }};
-        this.add(dropLabel, "DropLabel");
 
-        JPanel panel = new JPanel(new GridBagLayout());
+                    @Override
-        GridBagConstraints c = new GridBagConstraints();
+                    protected void paintComponent(Graphics g) {
-        c.fill = GridBagConstraints.BOTH;
+                        super.paintComponent(g);
-        c.anchor = GridBagConstraints.CENTER;
+                        g.setColor(View.TRANSPARENT_COLOR_DARKER);
+                        g.fillRect(0, 0, this.getWidth(), this.getHeight());
+                    }
+                }, c);
+                this.setDropTarget(new DropTarget() {
+                    @Override
+                    public synchronized void drop(DropTargetDropEvent dtde) {
+                        dtde.acceptDrop(DnDConstants.ACTION_COPY);
+                        try {
+                            List<File> droppedFiles = (List<File>)
+                                    dtde.getTransferable().getTransferData(DataFlavor.javaFileListFlavor);
+                            String code = SaveFileReader.findInSave(droppedFiles.get(0));
+                            if(code == null) {
+                                resultLabel.setText(I18N.getString("badFile"));
+                            } else {
+                                resultLabel.setText(code);
+                            }
+                            cardLayout.show(View.this, "resultPanel");
+                        } catch (Exception e) {
+                            e.printStackTrace();
+                            dtde.dropComplete(false);
+                        }
+                        dtde.dropComplete(true);
+                    }
+                });
+            }
 
-        this.codeField = new JTextField() {{
+            @Override
-            this.setPreferredSize(new Dimension(250, 50));
+            protected void paintComponent(Graphics g) {
-            this.setFont(this.getFont().deriveFont(View.FONT_SIZE));
+                super.paintComponent(g);
-        }};
+                g.setColor(View.TRANSPARENT_COLOR);
-        panel.add(this.codeField, c);
+                g.fillRect(0, 0, this.getWidth(), this.getHeight());
+            }
+        };
 
-        JButton button = new JButton("Enter") {{
+        JPanel enterCodePanel = new JPanel() {
-            this.setPreferredSize(new Dimension(100, 50));
+            {
-            this.setFont(this.getFont().deriveFont(View.FONT_SIZE));
+                this.setOpaque(false);
-            this.addActionListener(e -> {
+                this.setLayout(new BorderLayout());
-                String code = JDarkroom.getInstance().decodeInternetCode(codeField.getText());
+                this.add(new JPanel() {{
-                if(code == null) {
+                    this.setOpaque(false);
-                    codeLabel.setText("Incorrect Internet Code entered!");
+                    this.setLayout(new GridBagLayout());
-                    codeLabel.setForeground(Color.RED);
+                    GridBagConstraints c = new GridBagConstraints();
-                    codeField.setText("");
+                    c.fill = GridBagConstraints.BOTH;
-                } else {
+                    c.anchor = GridBagConstraints.CENTER;
-                    codeLabel.setForeground(Color.DARK_GRAY);
+                    JTextField textField = new JTextField() {{
-                    codeLabel.setText(View.YOUR_CODE_IS + code);
+                        this.setFont(View.FONT);
-                }
+                        this.setPreferredSize(new Dimension(220, 30));
-                cardLayout.show(View.this, "CodeLabel");
+                    }};
-            });
+                    this.add(new JPanel() {
-        }};
+                        {
+                            this.setOpaque(false);
+                            this.setBorder(BorderFactory.createLineBorder(Color.DARK_GRAY, 1));
+                            this.setLayout(new GridLayout(2, 1));
+                            this.add(new JPanel() {{
+                                this.setLayout(new BorderLayout());
+                                this.setOpaque(false);
+                                this.add(new JLabel(I18N.getString("enterCodeHere")) {{
+                                    this.setHorizontalAlignment(JLabel.CENTER);
+                                    this.setFont(View.FONT);
+                                }});
+                            }});
+                            this.add(new JPanel() {{
+                                this.setOpaque(false);
+                                this.add(textField);
+                                this.add(new JButton(I18N.getString("submit")) {{
+                                    this.setFont(View.FONT);
+                                    this.setPreferredSize(new Dimension(120, 30));
+                                    this.addActionListener(e -> {
+                                        String text = textField.getText();
+                                        textField.setText("");
+                                        if(text.length() != 16) {
+                                            resultLabel.setText(I18N.getString("incorrectCodeLength"));
+                                        } else {
+                                            resultLabel.setText(Decoder.decodeInternetCode(text));
+                                        }
+                                        cardLayout.show(View.this, "resultPanel");
+                                    });
+                                }});
+                            }});
+                        }
 
-        panel.add(button, c);
+                        @Override
-        this.add(panel, "InputPanel");
+                        protected void paintComponent(Graphics g) {
+                            super.paintComponent(g);
+                            g.setColor(View.TRANSPARENT_COLOR_DARKER);
+                            g.fillRect(0, 0, this.getWidth(), this.getHeight());
+                        }
+                    }, c);
+                }});
+            }
 
-        cardLayout.show(this, "DropLabel");
+            @Override
+            protected void paintComponent(Graphics g) {
+                super.paintComponent(g);
+                g.setColor(View.TRANSPARENT_COLOR);
+                g.fillRect(0, 0, this.getWidth(), this.getHeight());
+            }
+        };
+
+        JPanel resultPanel = new JPanel() {
+            {
+                this.setOpaque(false);
+                this.setLayout(new GridBagLayout());
+                GridBagConstraints c = new GridBagConstraints();
+                c.fill = GridBagConstraints.BOTH;
+                c.anchor = GridBagConstraints.CENTER;
+                this.add(new JPanel() {
+                    {
+                        this.setOpaque(false);
+                        this.setBorder(BorderFactory.createLineBorder(Color.DARK_GRAY, 1));
+                        this.add(resultLabel);
+                    }
+
+                    @Override
+                    protected void paintComponent(Graphics g) {
+                        super.paintComponent(g);
+                        g.setColor(View.TRANSPARENT_COLOR_DARKER);
+                        g.fillRect(0, 0, this.getWidth(), this.getHeight());
+                    }
+                }, c);
+                this.addMouseListener(new MouseAdapter() {
+                    @Override
+                    public void mousePressed(MouseEvent e) {
+                        super.mousePressed(e);
+                        cardLayout.show(View.this, "dropFilePanel");
+                    }
+                });
+            }
+
+            @Override
+            protected void paintComponent(Graphics g) {
+                super.paintComponent(g);
+                g.setColor(View.TRANSPARENT_COLOR);
+                g.fillRect(0, 0, this.getWidth(), this.getHeight());
+            }
+        };
+
+        this.add(dropFilePanel, "dropFilePanel");
+        this.add(enterCodePanel, "enterCodePanel");
+        this.add(resultPanel, "resultPanel");
+
+        cardLayout.show(this, "dropFilePanel");
 
         JFrame frame = new JFrame("JDarkroom");
-        frame.add(this);
+        frame.add(this, BorderLayout.CENTER);
         frame.pack();
         frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
+        frame.setIconImage(Utils.loadImage("/mdisk.png"));
         frame.setLocationRelativeTo(null);
         frame.setVisible(true);
     }
+
+    @Override
+    protected void paintComponent(Graphics g) {
+        super.paintComponent(g);
+        g.drawImage(View.BACKGROUND, 0, 0, null);
+    }
 }