Added support for Unicode (non-English) metadata.

- Setting is off by default, and can be switched on in the options menu.
- Changed default font to "Arial Unicode MS" (CJK), with fallback to "Lucida Sans Console" (non-CJK).  Cross-platform support may be added later.

Signed-off-by: Jeffrey Han <itdelatrisu@gmail.com>

src/itdelatrisu/opsu/MusicController.java

@@ -177,7 +177,7 @@ public class MusicController {
 	public static String getTrackName() {
 		if (!trackExists() || lastOsu == null)
 			return null;
-		return lastOsu.title;
+		return lastOsu.getTitle();
 	}
 
 	/**
@@ -186,7 +186,7 @@ public class MusicController {
 	public static String getArtistName() {
 		if (!trackExists() || lastOsu == null)
 			return null;
-		return lastOsu.artist;
+		return lastOsu.getArtist();
 	}
 
 	/**

src/itdelatrisu/opsu/OsuFile.java

@@ -18,6 +18,8 @@
 
 package itdelatrisu.opsu;
 
+import itdelatrisu.opsu.states.Options;
+
 import java.io.File;
 import java.util.ArrayList;
 
@@ -108,9 +110,28 @@ public class OsuFile implements Comparable<OsuFile> {
 
 	/**
 	 * Returns the associated file object.
+	 * @return the File object
 	 */
 	public File getFile() { return file; }
 
+	/**
+	 * Returns the song title.
+	 * If configured, the Unicode string will be returned instead.
+	 * @return the song title
+	 */
+	public String getTitle() {
+		return (Options.useUnicodeMetadata() && !titleUnicode.isEmpty()) ? titleUnicode : title;
+	}
+
+	/**
+	 * Returns the song artist.
+	 * If configured, the Unicode string will be returned instead.
+	 * @return the song artist
+	 */
+	public String getArtist() {
+		return (Options.useUnicodeMetadata() && !artistUnicode.isEmpty()) ? artistUnicode : artist;
+	}
+
 	/**
 	 * Draws the background associated with the OsuFile.
 	 * @param width the container width
@@ -154,6 +175,6 @@ public class OsuFile implements Comparable<OsuFile> {
 	 */
 	@Override
 	public String toString() {
-		return String.format("%s - %s [%s]", artist, title, version);
+		return String.format("%s - %s [%s]", getArtist(), getTitle(), version);
 	}
 }

src/itdelatrisu/opsu/OsuGroupNode.java

@@ -95,9 +95,9 @@ public class OsuGroupNode {
 		float cx = x + (bg.getWidth() * 0.05f) - xOffset;
 		float cy = y + (bg.getHeight() * 0.2f) - 3;
 
-		Utils.FONT_MEDIUM.drawString(cx, cy, osu.title, textColor);
+		Utils.FONT_MEDIUM.drawString(cx, cy, osu.getTitle(), textColor);
 		Utils.FONT_DEFAULT.drawString(cx, cy + Utils.FONT_MEDIUM.getLineHeight() - 4,
-				String.format("%s // %s", osu.artist, osu.creator), textColor);
+				String.format("%s // %s", osu.getArtist(), osu.creator), textColor);
 		if (expanded || osuFiles.size() == 1)
 			Utils.FONT_BOLD.drawString(cx, cy + Utils.FONT_MEDIUM.getLineHeight() + Utils.FONT_DEFAULT.getLineHeight() - 8,
 					osu.version, textColor);
@@ -144,7 +144,7 @@ public class OsuGroupNode {
 	@Override
 	public String toString() {
 		if (osuFileIndex == -1)
-			return String.format("%s - %s", osuFiles.get(0).artist, osuFiles.get(0).title);
+			return String.format("%s - %s", osuFiles.get(0).getArtist(), osuFiles.get(0).getTitle());
 		else
 			return osuFiles.get(osuFileIndex).toString();
 	}

src/itdelatrisu/opsu/OsuParser.java

@@ -20,9 +20,11 @@ package itdelatrisu.opsu;
 
 import java.io.BufferedReader;
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.FileReader;
 import java.io.FilenameFilter;
 import java.io.IOException;
+import java.io.InputStreamReader;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.LinkedList;
@@ -110,7 +112,7 @@ public class OsuParser {
 	private static OsuFile parseFile(File file, ArrayList<OsuFile> osuFiles, boolean parseObjects) {
 		OsuFile osu = new OsuFile(file);
 
-		try (BufferedReader in = new BufferedReader(new FileReader(file))) {
+		try (BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(file), "UTF-8"))) {
 
 			// initialize timing point list
 			osu.timingPoints = new ArrayList<OsuTimingPoint>();

src/itdelatrisu/opsu/Utils.java

@@ -21,9 +21,12 @@ package itdelatrisu.opsu;
 import itdelatrisu.opsu.states.Options;
 
 import java.awt.Font;
+import java.awt.GraphicsEnvironment;
 import java.io.File;
 import java.text.SimpleDateFormat;
+import java.util.Arrays;
 import java.util.Date;
+import java.util.HashSet;
 import java.util.Iterator;
 import java.util.LinkedList;
 
@@ -104,6 +107,11 @@ public class Utils {
 		cursorX = new LinkedList<Integer>(),
 		cursorY = new LinkedList<Integer>();
 
+	/**
+	 * Set of all Unicode strings already loaded.
+	 */
+	private static HashSet<String> loadedGlyphs = new HashSet<String>();
+
 	// game-related variables
 	private static GameContainer container;
 	private static StateBasedGame game;
@@ -148,15 +156,23 @@ public class Utils {
 		// create fonts
 		float fontBase;
 		if (height <= 600)
-			fontBase = 9f;
-		else if (height < 800)
 			fontBase = 10f;
+		else if (height < 800)
+			fontBase = 11f;
 		else if (height <= 900)
-			fontBase = 12f;
+			fontBase = 13f;
 		else
-			fontBase = 14f;
+			fontBase = 15f;
 
-		Font font    = new Font("Lucida Sans Unicode", Font.PLAIN, (int) (fontBase * 4 / 3));
+		// TODO: cross-platform multilingual support
+		String fontName = "";
+		String[] fontNames = GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames();
+		if (Arrays.asList(fontNames).contains("Arial Unicode MS"))
+			fontName = "Arial Unicode MS";
+		else
+			fontName = "Lucida Sans Console";
+
+		Font font    = new Font(fontName, Font.PLAIN, (int) (fontBase * 4 / 3));
 		FONT_DEFAULT = new UnicodeFont(font);
 		FONT_BOLD    = new UnicodeFont(font.deriveFont(Font.BOLD));
 		FONT_XLARGE  = new UnicodeFont(font.deriveFont(fontBase * 4));
@@ -485,4 +501,35 @@ public class Utils {
 		}
 		return true;
 	}
+
+	/**
+	 * Adds and loads glyphs for an OsuFile's Unicode title and artist strings.
+	 * @param osu the OsuFile
+	 */
+	public static void loadGlyphs(OsuFile osu) {
+		boolean glyphsAdded = false;
+		if (!osu.titleUnicode.isEmpty() && !loadedGlyphs.contains(osu.titleUnicode)) {
+			Utils.FONT_LARGE.addGlyphs(osu.titleUnicode);
+			Utils.FONT_MEDIUM.addGlyphs(osu.titleUnicode);
+			Utils.FONT_DEFAULT.addGlyphs(osu.titleUnicode);
+			loadedGlyphs.add(osu.titleUnicode);
+			glyphsAdded = true;
+		}
+		if (!osu.artistUnicode.isEmpty() && !loadedGlyphs.contains(osu.artistUnicode)) {
+			Utils.FONT_LARGE.addGlyphs(osu.artistUnicode);
+			Utils.FONT_MEDIUM.addGlyphs(osu.artistUnicode);
+			Utils.FONT_DEFAULT.addGlyphs(osu.artistUnicode);
+			loadedGlyphs.add(osu.artistUnicode);
+			glyphsAdded = true;
+		}
+		if (glyphsAdded && Options.useUnicodeMetadata()) {
+			try {
+				Utils.FONT_LARGE.loadGlyphs();
+				Utils.FONT_MEDIUM.loadGlyphs();
+				Utils.FONT_DEFAULT.loadGlyphs();
+			} catch (SlickException e) {
+				Log.warn("Failed to load glyphs.", e);
+			}
+		}
+	}
 }

src/itdelatrisu/opsu/states/GameRanking.java

@@ -121,7 +121,7 @@ public class GameRanking extends BasicGameState {
 		// header text
 		g.setColor(Color.white);
 		Utils.FONT_LARGE.drawString(10, 0,
-				String.format("%s - %s [%s]", osu.artist, osu.title, osu.version));
+				String.format("%s - %s [%s]", osu.getArtist(), osu.getTitle(), osu.version));
 		Utils.FONT_MEDIUM.drawString(10, Utils.FONT_LARGE.getLineHeight() - 6,
 				String.format("Beatmap by %s", osu.creator));
 

src/itdelatrisu/opsu/states/Options.java

@@ -128,7 +128,8 @@ public class Options extends BasicGameState {
 		CHECKPOINT,
 		DISABLE_SOUNDS,
 		KEY_LEFT,
-		KEY_RIGHT;
+		KEY_RIGHT,
+		SHOW_UNICODE;
 	};
 
 	/**
@@ -169,6 +170,7 @@ public class Options extends BasicGameState {
 //		GameOption.FULLSCREEN,
 		GameOption.TARGET_FPS,
 		GameOption.SHOW_FPS,
+		GameOption.SHOW_UNICODE,
 		GameOption.SCREENSHOT_FORMAT,
 		GameOption.NEW_CURSOR,
 		GameOption.DYNAMIC_BACKGROUND,
@@ -363,6 +365,11 @@ public class Options extends BasicGameState {
 	private static boolean disableSound =
 		(System.getProperty("os.name").toLowerCase().indexOf("linux") > -1);
 
+	/**
+	 * Whether or not to display non-English metadata.
+	 */
+	private static boolean showUnicode = false;
+
 	/**
 	 * Left and right game keys.
 	 */
@@ -607,6 +614,18 @@ public class Options extends BasicGameState {
 			keyEntryLeft = false;
 			keyEntryRight = true;
 			break;
+		case SHOW_UNICODE:
+			showUnicode = !showUnicode;
+			if (showUnicode) {
+				try {
+					Utils.FONT_LARGE.loadGlyphs();
+					Utils.FONT_MEDIUM.loadGlyphs();
+					Utils.FONT_DEFAULT.loadGlyphs();
+				} catch (SlickException e) {
+					Log.warn("Failed to load glyphs.", e);
+				}
+			}
+			break;
 		default:
 			break;
 		}
@@ -780,6 +799,12 @@ public class Options extends BasicGameState {
 					"Show an FPS counter in the bottom-right hand corner."
 			);
 			break;
+		case SHOW_UNICODE:
+			drawOption(pos, "Prefer Non-English Metadata",
+					showUnicode ? "Yes" : "No",
+					"Where available, song titles will be shown in their native language."
+			);
+			break;
 		case NEW_CURSOR:
 			drawOption(pos, "Enable New Cursor",
 					newCursor ? "Yes" : "No",
@@ -1132,6 +1157,12 @@ public class Options extends BasicGameState {
 	 */
 	public static boolean isSoundDisabled() { return disableSound; }
 
+	/**
+	 * Returns whether or not to use non-English metadata where available.
+	 * @return true if Unicode preferred
+	 */
+	public static boolean useUnicodeMetadata() { return showUnicode; }
+
 	/**
 	 * Sets the track checkpoint time, if within bounds.
 	 * @param time the track position (in ms)
@@ -1288,6 +1319,9 @@ public class Options extends BasicGameState {
 				case "FpsCounter":
 					showFPS = Boolean.parseBoolean(value);
 					break;
+				case "ShowUnicode":
+					showUnicode = Boolean.parseBoolean(value);
+					break;
 				case "NewCursor":
 					newCursor = Boolean.parseBoolean(value);
 					break;
@@ -1416,6 +1450,8 @@ public class Options extends BasicGameState {
 			writer.newLine();
 			writer.write(String.format("FpsCounter = %b", showFPS));
 			writer.newLine();
+			writer.write(String.format("ShowUnicode = %b", showUnicode));
+			writer.newLine();
 			writer.write(String.format("ScreenshotFormat = %d", screenshotFormatIndex));
 			writer.newLine();
 			writer.write(String.format("NewCursor = %b", newCursor));

src/itdelatrisu/opsu/states/SongMenu.java

@@ -240,6 +240,7 @@ public class SongMenu extends BasicGameState {
 		OsuGroupNode node = startNode;
 		for (int i = 0; i < MAX_BUTTONS && node != null; i++) {
 			node.draw(buttonX, buttonY + (i*buttonOffset), (node == focusNode));
+			Utils.loadGlyphs(node.osuFiles.get(0));
 			node = node.next;
 		}
 
@@ -569,7 +570,9 @@ public class SongMenu extends BasicGameState {
 		if (flag || (startNode.index == 0 && startNode.osuFileIndex == -1 && startNode.prev == null))
 			startNode = node;
 		focusNode = Opsu.groups.getNode(node, pos);
-		MusicController.play(focusNode.osuFiles.get(focusNode.osuFileIndex), true);
+		OsuFile osu = focusNode.osuFiles.get(focusNode.osuFileIndex);
+		MusicController.play(osu, true);
+		Utils.loadGlyphs(osu);
 
 		// check startNode bounds
 		while (startNode.index >= Opsu.groups.size() + length - MAX_BUTTONS && startNode.prev != null)

src/itdelatrisu/opsu/states/Splash.java

@@ -110,7 +110,6 @@ public class Splash extends BasicGameState {
 			// load other resources in a new thread
 			final int width = container.getWidth();
 			final int height = container.getHeight();
-			final SongMenu menu = (SongMenu) game.getState(Opsu.STATE_SONGMENU);
 			new Thread() {
 				@Override
 				public void run() {
@@ -122,10 +121,6 @@ public class Splash extends BasicGameState {
 					// parse song directory
 					OsuParser.parseAllFiles(beatmapDir, width, height);
 
-					// initialize song list
-					Opsu.groups.init();
-					menu.setFocus(Opsu.groups.getRandomNode(), -1, true);
-
 					// load sounds
 					SoundController.init();
 
@@ -140,9 +135,14 @@ public class Splash extends BasicGameState {
 			logo.setAlpha(alpha + (delta / 400f));
 
 		// change states when loading complete
-		if (finished && alpha >= 1f)
+		if (finished && alpha >= 1f) {
+			// initialize song list
+			Opsu.groups.init();
+			((SongMenu) game.getState(Opsu.STATE_SONGMENU)).setFocus(Opsu.groups.getRandomNode(), -1, true);
+
 			game.enterState(Opsu.STATE_MAINMENU);
 		}
+	}
 
 	@Override
 	public int getID() { return state; }