Updates and fixes from fluddokt/opsu@76778f8 and fluddokt/opsu@cf321e9.

- Rotate slider ball image along the curve.
- Show download speed and time remaining when hovering over the download info button.
- Maintain aspect ratio of beatmap background image during gameplay.
- Clear beatmap background image cache after reaching OsuFile.MAX_CACHE_SIZE.
- Multiply hit circle size by OsuHitObject.getXMultiplier().
- Scale MENU_BUTTON_BG based on SongMenu.MAX_SONG_BUTTONS.
- Fixed download search TextField retaining focus even after leaving the downloads menu.
- Include Unicode title/artist strings in searches.
- Parse x,y beatmap coordinates as floats (instead of integers), and only read Kiai time if present.
- Added 1600x1200 resolution.

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

src/itdelatrisu/opsu/GameImage.java

@@ -18,6 +18,8 @@
 
 package itdelatrisu.opsu;
 
+import itdelatrisu.opsu.states.SongMenu;
+
 import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
@@ -381,7 +383,7 @@ public enum GameImage {
 	MENU_BUTTON_BG ("menu-button-background", "png", false, false) {
 		@Override
 		protected Image process_sub(Image img, int w, int h) {
-			return img.getScaledCopy(w / 2, h / 6);
+			return img.getScaledCopy(w / 2, h / SongMenu.MAX_SONG_BUTTONS);
 		}
 	},
 	MENU_TAB ("selection-tab", "png", false, false) {

src/itdelatrisu/opsu/Options.java

@@ -393,6 +393,7 @@ public class Options {
 		RES_1440_900 (1440, 900),
 		RES_1600_900 (1600, 900),
 		RES_1680_1050 (1680, 1050),
+		RES_1600_1200 (1600, 1200),
 		RES_1920_1080 (1920, 1080),
 		RES_1920_1200 (1920, 1200),
 		RES_2560_1440 (2560, 1440),

src/itdelatrisu/opsu/OsuFile.java

@@ -34,6 +34,9 @@ public class OsuFile implements Comparable<OsuFile> {
 	/** Map of all loaded background images. */
 	private static HashMap<OsuFile, Image> bgImageMap = new HashMap<OsuFile, Image>();
 
+	/** Maximum number of cached images before all get erased. */
+	private static final int MAX_CACHE_SIZE = 10;
+
 	/** The OSU File object associated with this OsuFile. */
 	private File file;
 
@@ -250,19 +253,34 @@ public class OsuFile implements Comparable<OsuFile> {
 	 * @param width the container width
 	 * @param height the container height
 	 * @param alpha the alpha value
+	 * @param stretch if true, stretch to screen dimensions; otherwise, maintain aspect ratio
 	 * @return true if successful, false if any errors were produced
 	 */
-	public boolean drawBG(int width, int height, float alpha) {
+	public boolean drawBG(int width, int height, float alpha, boolean stretch) {
 		if (bg == null)
 			return false;
 		try {
 			Image bgImage = bgImageMap.get(this);
 			if (bgImage == null) {
-				bgImage = new Image(bg).getScaledCopy(width, height);
+				bgImage = new Image(bg);
+				if (bgImageMap.size() > MAX_CACHE_SIZE)
+					clearImageCache();
 				bgImageMap.put(this, bgImage);
 			}
+
+			// fit image to screen
+			int swidth = width;
+			int sheight = height;
+			if (!stretch) {
+				if (bgImage.getWidth() / (float) bgImage.getHeight() > width / (float) height)  // x > y
+					sheight = (int) (width * bgImage.getHeight() / (float) bgImage.getWidth());
+				else
+					swidth = (int) (height * bgImage.getWidth() / (float) bgImage.getHeight());
+			}
+			bgImage = bgImage.getScaledCopy(swidth, sheight);
+
 			bgImage.setAlpha(alpha);
-			bgImage.draw();
+			bgImage.drawCentered(width / 2, height / 2);
 		} catch (Exception e) {
 			Log.warn(String.format("Failed to get background image '%s'.", bg), e);
 			bg = null;  // don't try to load the file again until a restart

src/itdelatrisu/opsu/OsuGroupNode.java

@@ -150,7 +150,9 @@ public class OsuGroupNode {
 
 		// search: title, artist, creator, source, version, tags (first OsuFile)
 		if (osu.title.toLowerCase().contains(query) ||
+			osu.titleUnicode.toLowerCase().contains(query) ||
 			osu.artist.toLowerCase().contains(query) ||
+			osu.artistUnicode.toLowerCase().contains(query) ||
 			osu.creator.toLowerCase().contains(query) ||
 			osu.source.toLowerCase().contains(query) ||
 			osu.version.toLowerCase().contains(query) ||

src/itdelatrisu/opsu/OsuHitObject.java

@@ -148,8 +148,8 @@ public class OsuHitObject {
 		String tokens[] = line.split(",");
 
 		// common fields
-		this.x = Integer.parseInt(tokens[0]) * xMultiplier + xOffset;
+		this.x = Float.parseFloat(tokens[0]) * xMultiplier + xOffset;
-		this.y = Integer.parseInt(tokens[1]) * yMultiplier + yOffset;
+		this.y = Float.parseFloat(tokens[1]) * yMultiplier + yOffset;
 		this.time = Integer.parseInt(tokens[2]);
 		this.type = Integer.parseInt(tokens[3]);
 		this.hitSound = Byte.parseByte(tokens[4]);

src/itdelatrisu/opsu/OsuTimingPoint.java

@@ -65,7 +65,8 @@ public class OsuTimingPoint {
 			this.sampleTypeCustom = Byte.parseByte(tokens[4]);
 			this.sampleVolume = Integer.parseInt(tokens[5]);
 //			this.inherited = (Integer.parseInt(tokens[6]) == 1);
-			this.kiai = (Integer.parseInt(tokens[7]) == 1);
+			if (tokens.length > 7)
+				this.kiai = (Integer.parseInt(tokens[7]) == 1);
 		} catch (ArrayIndexOutOfBoundsException e) {
 			Log.debug(String.format("Error parsing timing point: '%s'", line));
 		}

src/itdelatrisu/opsu/downloads/Download.java

@@ -44,6 +44,9 @@ public class Download {
 	/** Read timeout, in ms. */
 	public static final int READ_TIMEOUT = 10000;
 
+	/** Time between download speed and ETA updates, in ms. */
+	private static final int UPDATE_INTERVAL = 1000;
+
 	/** Download statuses. */
 	public enum Status {
 		WAITING ("Waiting"),
@@ -90,6 +93,18 @@ public class Download {
 	/** The download status. */
 	private Status status = Status.WAITING;
 
+	/** Time when lastReadSoFar was updated. */
+	private long lastReadSoFarTime = -1;
+
+	/** Last readSoFar amount. */
+	private long lastReadSoFar = -1;
+
+	/** Last calculated download speed string. */
+	private String lastDownloadSpeed;
+
+	/** Last calculated ETA string. */
+	private String lastTimeRemaining;
+
 	/**
 	 * Constructor.
 	 * @param remoteURL the download URL
@@ -234,6 +249,60 @@ public class Download {
 		}
 	}
 
+	/**
+	 * Returns the last calculated download speed, or null if not downloading.
+	 */
+	public String getDownloadSpeed() {
+		updateReadSoFar();
+		return lastDownloadSpeed;
+	}
+
+	/**
+	 * Returns the last calculated ETA, or null if not downloading.
+	 */
+	public String getTimeRemaining() {
+		updateReadSoFar();
+		return lastTimeRemaining;
+	}
+
+	/**
+	 * Updates the last readSoFar and related fields.
+	 */
+	private void updateReadSoFar() {
+		// only update while downloading
+		if (status != Status.DOWNLOADING) {
+			this.lastDownloadSpeed = null;
+			this.lastTimeRemaining = null;
+			return;
+		}
+
+		// update download speed and ETA
+		if (System.currentTimeMillis() > lastReadSoFarTime + UPDATE_INTERVAL) {
+			long readSoFar = readSoFar();
+			long readSoFarTime = System.currentTimeMillis();
+			long dlspeed = (readSoFar - lastReadSoFar) * 1000 / (readSoFarTime - lastReadSoFarTime);
+			if (dlspeed > 0) {
+				this.lastDownloadSpeed = String.format("%s/s", Utils.bytesToString(dlspeed));
+				long t = (contentLength - readSoFar) / dlspeed;
+				if (t >= 3600)
+					this.lastTimeRemaining = String.format("%dh%dm%ds", t / 3600, (t / 60) % 60, t % 60);
+				else
+					this.lastTimeRemaining = String.format("%dm%ds", t / 60, t % 60);
+			} else {
+				this.lastDownloadSpeed = String.format("%s/s", Utils.bytesToString(0));
+				this.lastTimeRemaining = "?";
+			}
+			this.lastReadSoFarTime = readSoFarTime;
+			this.lastReadSoFar = readSoFar;
+		}
+
+		// first call
+		else if (lastReadSoFarTime <= 0) {
+			this.lastReadSoFar = readSoFar();
+			this.lastReadSoFarTime = System.currentTimeMillis();
+		}
+	}
+
 	/**
 	 * Cancels the download, if running.
 	 */

src/itdelatrisu/opsu/downloads/DownloadNode.java

@@ -348,9 +348,13 @@ public class DownloadNode {
 			info = status.getName();
 		else if (status == Download.Status.WAITING)
 			info = String.format("%s...", status.getName());
-		else
+		else {
-			info = String.format("%s: %.1f%% (%s/%s)", status.getName(), progress,
+			if (hover)
-					Utils.bytesToString(download.readSoFar()), Utils.bytesToString(download.contentLength()));
+				info = String.format("%s: %s left (%s)", status.getName(), download.getTimeRemaining(), download.getDownloadSpeed());
+			else
+				info = String.format("%s: %.1f%% (%s/%s)", status.getName(), progress,
+						Utils.bytesToString(download.readSoFar()), Utils.bytesToString(download.contentLength()));
+		}
 		Utils.FONT_BOLD.drawString(textX, y + marginY, getTitle(), Color.white);
 		Utils.FONT_DEFAULT.drawString(textX, y + marginY + Utils.FONT_BOLD.getLineHeight(), info, Color.white);
 

src/itdelatrisu/opsu/objects/Circle.java

@@ -56,7 +56,7 @@ public class Circle implements HitObject {
 	 */
 	public static void init(GameContainer container, float circleSize) {
 		int diameter = (int) (96 - (circleSize * 8));
-		diameter = diameter * container.getWidth() / 640;  // convert from Osupixels (640x480)
+		diameter = (int) (diameter * OsuHitObject.getXMultiplier());  // convert from Osupixels (640x480)
 		GameImage.HITCIRCLE.setImage(GameImage.HITCIRCLE.getImage().getScaledCopy(diameter, diameter));
 		GameImage.HITCIRCLE_OVERLAY.setImage(GameImage.HITCIRCLE_OVERLAY.getImage().getScaledCopy(diameter, diameter));
 		GameImage.APPROACHCIRCLE.setImage(GameImage.APPROACHCIRCLE.getImage().getScaledCopy(diameter, diameter));

src/itdelatrisu/opsu/objects/Slider.java

@@ -99,7 +99,7 @@ public class Slider implements HitObject {
 	 */
 	public static void init(GameContainer container, float circleSize, OsuFile osu) {
 		int diameter = (int) (96 - (circleSize * 8));
-		diameter = diameter * container.getWidth() / 640;  // convert from Osupixels (640x480)
+		diameter = (int) (diameter * OsuHitObject.getXMultiplier());  // convert from Osupixels (640x480)
 
 		// slider ball
 		Image[] sliderBallImages;
@@ -211,9 +211,13 @@ public class Slider implements HitObject {
 			Utils.drawCentered(GameImage.APPROACHCIRCLE.getImage().getScaledCopy(approachScale), x, y, color);
 		} else {
 			float[] c = curve.pointAt(getT(trackPosition, false));
+			float[] c2 = curve.pointAt(getT(trackPosition, false) + 0.01f);
 
 			// slider ball
-			Utils.drawCentered(sliderBall, c[0], c[1]);
+			Image sliderBallFrame = sliderBall.getCurrentFrame();
+			float angle = (float) (Math.atan2(c2[1] - c[1], c2[0] - c[0]) * 180 / Math.PI);
+			sliderBallFrame.setRotation(angle);
+			sliderBallFrame.drawCentered(c[0], c[1]);
 
 			// follow circle
 			if (followCircleActive)

src/itdelatrisu/opsu/states/DownloadsMenu.java

@@ -660,6 +660,12 @@ public class DownloadsMenu extends BasicGameState {
 		pageDir = Page.RESET;
 	}
 
+	@Override
+	public void leave(GameContainer container, StateBasedGame game)
+			throws SlickException {
+		search.setFocus(false);
+	}
+
 	/**
 	 * Resets the search timer, but respects the minimum request interval.
 	 */

src/itdelatrisu/opsu/states/Game.java

@@ -173,7 +173,7 @@ public class Game extends BasicGameState {
 		// background
 		g.setBackground(Color.black);
 		float dimLevel = Options.getBackgroundDim();
-		if (Options.isDefaultPlayfieldForced() || !osu.drawBG(width, height, dimLevel)) {
+		if (Options.isDefaultPlayfieldForced() || !osu.drawBG(width, height, dimLevel, false)) {
 			Image playfield = GameImage.PLAYFIELD.getImage();
 			playfield.setAlpha(dimLevel);
 			playfield.draw();

src/itdelatrisu/opsu/states/GameRanking.java

@@ -95,7 +95,7 @@ public class GameRanking extends BasicGameState {
 		OsuFile osu = MusicController.getOsuFile();
 
 		// background
-		if (!osu.drawBG(width, height, 0.7f))
+		if (!osu.drawBG(width, height, 0.7f, true))
 			g.setBackground(Utils.COLOR_BLACK_ALPHA);
 
 		// ranking screen elements

src/itdelatrisu/opsu/states/MainMenu.java

@@ -168,7 +168,7 @@ public class MainMenu extends BasicGameState {
 		// draw background
 		OsuFile osu = MusicController.getOsuFile();
 		if (Options.isDynamicBackgroundEnabled() &&
-			osu != null && osu.drawBG(width, height, bgAlpha))
+			osu != null && osu.drawBG(width, height, bgAlpha, true))
 				;
 		else {
 			Image bg = GameImage.MENU_BG.getImage();

src/itdelatrisu/opsu/states/SongMenu.java

@@ -68,7 +68,7 @@ import org.newdawn.slick.state.transition.FadeOutTransition;
  */
 public class SongMenu extends BasicGameState {
 	/** The max number of song buttons to be shown on each screen. */
-	private static final int MAX_SONG_BUTTONS = 6;
+	public static final int MAX_SONG_BUTTONS = 6;
 
 	/** The max number of score buttons to be shown at a time. */
 	public static final int MAX_SCORE_BUTTONS = 7;
@@ -239,7 +239,7 @@ public class SongMenu extends BasicGameState {
 
 		// background
 		if (focusNode != null)
-			focusNode.osuFiles.get(focusNode.osuFileIndex).drawBG(width, height, 1.0f);
+			focusNode.osuFiles.get(focusNode.osuFileIndex).drawBG(width, height, 1.0f, true);
 
 		// header setup
 		float lowerBound = height * 0.15f;