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/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;