main difference: music selection screen now completely functional; other

refactoring and changes to make better use of the framework were made;
some cleanup happened;

desktop/src/zero1hd/rhythmbullet/desktop/DesktopLauncher.java

@@ -1,24 +1,37 @@
 package zero1hd.rhythmbullet.desktop;
 
+import java.awt.Canvas;
+import java.awt.Color;
+
+import javax.swing.JFrame;
+
+import org.lwjgl.LWJGLException;
+import org.lwjgl.opengl.AWTGLCanvas;
+
 import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
 import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
+import com.badlogic.gdx.backends.lwjgl.LwjglGraphics;
 
 import zero1hd.rhythmbullet.RhythmBullet;
 import zero1hd.rhythmbullet.desktop.screens.SplashScreen;
 
-public class DesktopLauncher {
+public class DesktopLauncher  {
+
 	public static void main (String[] arg) {
 		RhythmBullet core;
 		LwjglApplicationConfiguration config = new LwjglApplicationConfiguration();
 		DesktopScreenConfiguration screenConfig = new DesktopScreenConfiguration(config);
+		
 		config.title = "Rhythm Bullet";
 		config.resizable = false;
 		config.useHDPI = true;
 		config.samples = 2;
-		config.width = 512;
-		config.height = 512;
+		config.allowSoftwareMode = true;
 		core = new RhythmBullet();
 		core.setup(new SplashScreen(), new DesktopAssetPack(), screenConfig);
-		new LwjglApplication(core, config);
+		
+		while (screenConfig.shouldStart()) {
+			LwjglApplication app = new LwjglApplication(core, config);
+		}
 	}
 }

desktop/src/zero1hd/rhythmbullet/desktop/DesktopScreenConfiguration.java

@@ -2,13 +2,14 @@ package zero1hd.rhythmbullet.desktop;
 
 import org.lwjgl.opengl.Display;
 
+import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
 
 import zero1hd.rhythmbullet.util.ScreenConfiguration;
 
 public class DesktopScreenConfiguration implements ScreenConfiguration {
 	private LwjglApplicationConfiguration configuration;
-	
+	private boolean start = true;
 	public DesktopScreenConfiguration(LwjglApplicationConfiguration configuration) {
 		this.configuration = configuration;
 	}
@@ -18,16 +19,20 @@ public class DesktopScreenConfiguration implements ScreenConfiguration {
 		configuration.foregroundFPS = fps;
 	}
 
+
+	@Override
+	public int getTargetFramesPerSecond() {
+		return configuration.foregroundFPS;
+	}
+
+	/**
+	 * Requires restart. Can be done by calling {@link #restart()}
+	 */
 	@Override
 	public void setVsync(boolean useVsync) {
 		configuration.vSyncEnabled = useVsync;
 	}
 
-	@Override
-	public int getFramesPerSecond() {
-		return configuration.foregroundFPS;
-	}
-
 	@Override
 	public boolean getVsync() {
 		return configuration.vSyncEnabled;
@@ -67,4 +72,16 @@ public class DesktopScreenConfiguration implements ScreenConfiguration {
 	public void setWindowLocation(int x, int y) {
 		Display.setLocation(x, y);
 	}
+	
+	@Override
+	public void restart() {
+		Gdx.app.exit();
+		start = true;
+	}
+	
+	public boolean shouldStart() {
+		boolean should = start;
+		start = false;
+		return should;
+	}
 }

desktop/src/zero1hd/rhythmbullet/desktop/audio/PCMObtainer.java

@@ -34,7 +34,7 @@ public class PCMObtainer implements Observer, PCMSystem {
 	private ShortBuffer playingBuffer;
 	private ShortBuffer intermediateBuffer;
 	private ShortBuffer buffer;
-	private int sourceID;
+	private volatile int sourceID;
 	private int channelCount;
 	private MusicController mc;
 	private BufferStreamReadThread streamReadThread;
@@ -177,13 +177,7 @@ public class PCMObtainer implements Observer, PCMSystem {
 					windowsRead++;
 					
 					//contemplate synchronization
-					try {
-						currentPlaybackWindow = MathUtils.round((mc.getCurrentPosition() * sampleRate) / windowSize);
-					} catch (UnsatisfiedLinkError ule) {
-						if (run) {
-							ule.printStackTrace();
-						}
-					}
+					currentPlaybackWindow = MathUtils.round((mc.getCurrentPosition() * sampleRate) / windowSize);
 					if (windowsRead != currentPlaybackWindow) {
 						synchronizeBufferWithPlayback();
 					}

desktop/src/zero1hd/rhythmbullet/desktop/graphics/ui/components/MusicControls.java

@@ -1,89 +0,0 @@
-package zero1hd.rhythmbullet.desktop.graphics.ui.components;
-
-import com.badlogic.gdx.scenes.scene2d.Actor;
-import com.badlogic.gdx.scenes.scene2d.InputEvent;
-import com.badlogic.gdx.scenes.scene2d.ui.CheckBox;
-import com.badlogic.gdx.scenes.scene2d.ui.HorizontalGroup;
-import com.badlogic.gdx.scenes.scene2d.ui.ImageButton;
-import com.badlogic.gdx.scenes.scene2d.ui.Skin;
-import com.badlogic.gdx.scenes.scene2d.utils.ChangeListener;
-import com.badlogic.gdx.scenes.scene2d.utils.ClickListener;
-
-import zero1hd.rhythmbullet.audio.MusicController;
-
-public class MusicControls extends HorizontalGroup {
-	private ImageButton reverse, forward;
-	private CheckBox shuffle, play;
-	public MusicControls(Skin skin, final MusicController sc) {
-		reverse = new ImageButton(skin, "rewind-button");
-		reverse.addListener(new ChangeListener() {
-			@Override
-			public void changed(ChangeEvent event, Actor actor) {
-				boolean wasPlaying = sc.isPlaying();
-				sc.previous();
-				if (wasPlaying) {
-					sc.play();
-				}
-			}
-		});
-		addActor(reverse);
-		
-		play = new CheckBox(null, skin, "play-button") {
-			@Override
-			public void act(float delta) {
-				if (sc.hasSongLoaded()) {
-					play.setChecked(sc.isPlaying());
-				} else {
-					play.setChecked(false);
-				}
-				super.act(delta);
-			}
-		};
-		play.addListener(new ClickListener() {
-			@Override
-			public void clicked(InputEvent event, float x, float y) {
-				if (play.isChecked()) {
-					sc.play();
-				} else {
-					sc.pause();
-				}
-				super.clicked(event, x, y);
-			}
-		});
-		addActor(play);
-		
-		forward = new ImageButton(skin, "fast-forward-button");
-		forward.addListener(new ChangeListener() {
-			@Override
-			public void changed(ChangeEvent event, Actor actor) {
-				boolean wasPlaying = sc.isPlaying();
-				sc.skip();
-				if (wasPlaying) {
-					sc.play();
-				}
-			}
-		});
-		addActor(forward);
-		shuffle = new CheckBox(null, skin, "shuffle-button") {
-			@Override
-			public void act(float delta) {
-				shuffle.setChecked(sc.isShuffle());
-				super.act(delta);
-			}
-		};
-		shuffle.addListener(new ChangeListener() {
-			@Override
-			public void changed(ChangeEvent event, Actor actor) {
-				if (shuffle.isChecked()) {
-					sc.setShuffle(true);
-				} else {
-					sc.setShuffle(false);
-				}
-			}
-		});
-		addActor(shuffle);
-		space(15);
-		
-		setSize(getMinWidth(), getMinHeight());
-	}
-}

desktop/src/zero1hd/rhythmbullet/desktop/screens/SplashScreen.java

@@ -22,6 +22,7 @@ public class SplashScreen extends ScreenAdapter implements InitialScreen {
 	
 	@Override
 	public void init() {
+		stage = new Stage(new ScreenViewport());
 		splash = new Texture(Gdx.files.internal("splashlogo.png"));
 		zero1HD = new Image(splash);
 	}
@@ -47,14 +48,19 @@ public class SplashScreen extends ScreenAdapter implements InitialScreen {
 
 	@Override
 	public void postAssetLoad() {
-		stage = new Stage(new ScreenViewport());
-		stage.addActor(zero1HD);
-		zero1HD.setScale((Gdx.graphics.getHeight()*0.5f)/zero1HD.getHeight()*zero1HD.getScaleY());
+		zero1HD.setScale((stage.getHeight()*0.8f)/(zero1HD.getHeight()));
 		zero1HD.setColor(0f,1f,1f,0f);
-		zero1HD.setPosition((stage.getWidth() - zero1HD.getWidth()*zero1HD.getScaleX())/2f, (stage.getHeight() - zero1HD.getHeight()*zero1HD.getScaleY())/2f);
+		zero1HD.setPosition((stage.getWidth() - (zero1HD.getWidth()*zero1HD.getScaleX()))/2f, (stage.getHeight() - (zero1HD.getHeight()*zero1HD.getScaleY()))/2f);
+		stage.addActor(zero1HD);
 		zero1HD.addAction(Actions.sequence(Actions.color(Color.WHITE, 1f), Actions.fadeOut(0.5f)));
 	}
-
+	
+	@Override
+	public void resize(int width, int height) {
+		stage.getViewport().update(width, height);
+		super.resize(width, height);
+	}
+	
 	@Override
 	public Screen createMainScreen(RhythmBullet game) {
 		return new MainScreen(game);

desktop/src/zero1hd/rhythmbullet/desktop/screens/main/MainPage.java

@@ -20,8 +20,8 @@ import zero1hd.rhythmbullet.RhythmBullet;
 import zero1hd.rhythmbullet.audio.MusicController;
 import zero1hd.rhythmbullet.audio.visualizer.DoubleHorizontalVisualizer;
 import zero1hd.rhythmbullet.desktop.audio.PCMObtainer;
-import zero1hd.rhythmbullet.desktop.graphics.ui.components.MusicControls;
 import zero1hd.rhythmbullet.graphics.ui.Page;
+import zero1hd.rhythmbullet.graphics.ui.components.MusicControls;
 import zero1hd.rhythmbullet.graphics.ui.components.ScrollText;
 import zero1hd.rhythmbullet.util.ScreenConfiguration;
 
@@ -46,7 +46,7 @@ public class MainPage extends Page implements Observer {
 		this.mc = musicController;
 		this.mc.addObserver(this);
 		
-		dhv = new DoubleHorizontalVisualizer((int) getWidth(), (int) 0, 2.5f, 0, screenConfiguration.getFramesPerSecond(), mc, new PCMObtainer(mc));
+		dhv = new DoubleHorizontalVisualizer((int) getWidth(), (int) 0, getHeight(), 0, screenConfiguration.getTargetFramesPerSecond(), mc, new PCMObtainer(mc));
 		dhv.setPosition(0, (int) ((getHeight() - dhv.getHeight())/2f));
 		
 		title = new Image(assetManager.get("title.png", Texture.class));
@@ -95,7 +95,6 @@ public class MainPage extends Page implements Observer {
 		scrollText.setWidth(0.5f*getWidth());
 		scrollText.setPosition(15, getHeight() - scrollText.getHeight()-30f);
 		addActor(scrollText);
-		
 	}
 	
 	@Override

desktop/src/zero1hd/rhythmbullet/desktop/screens/main/MainScreen.java

@@ -62,7 +62,6 @@ public class MainScreen extends ScreenAdapter implements ResizeReadyScreen {
 		musicController = new MusicController(musicList, core.getPreferences());
 		musicController.setAutoPlay(true);
 		musicController.setShuffle(true);
-		
 		musicMetadataController = new MusicMetadataController(musicList);
 		
 		listeners = new Listeners();
@@ -110,6 +109,7 @@ public class MainScreen extends ScreenAdapter implements ResizeReadyScreen {
 		}
 		background = null;
 		musicController.deleteObservers();
+		musicMetadataController.deleteObservers();
 	}
 	
 	@Override
@@ -161,8 +161,6 @@ public class MainScreen extends ScreenAdapter implements ResizeReadyScreen {
 			}
 		});
 		
-		musicController.addObserver(musicSelectionPage);
-		musicController.addObserver(mainPage);
 		musicController.getMusicList().asyncSearch(false);
 		resizing = false;
 	}

desktop/src/zero1hd/rhythmbullet/desktop/screens/main/MusicSelectionPage.java

@@ -10,27 +10,32 @@ import com.badlogic.gdx.assets.AssetManager;
 import com.badlogic.gdx.files.FileHandle;
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.graphics.Texture;
+import com.badlogic.gdx.graphics.g2d.Batch;
 import com.badlogic.gdx.graphics.g2d.TextureRegion;
+import com.badlogic.gdx.math.Vector2;
 import com.badlogic.gdx.math.Vector3;
 import com.badlogic.gdx.scenes.scene2d.InputEvent;
 import com.badlogic.gdx.scenes.scene2d.InputListener;
+import com.badlogic.gdx.scenes.scene2d.ui.Button;
+import com.badlogic.gdx.scenes.scene2d.ui.ButtonGroup;
 import com.badlogic.gdx.scenes.scene2d.ui.Image;
 import com.badlogic.gdx.scenes.scene2d.ui.Label;
 import com.badlogic.gdx.scenes.scene2d.ui.ScrollPane;
 import com.badlogic.gdx.scenes.scene2d.ui.Skin;
-import com.badlogic.gdx.scenes.scene2d.ui.Stack;
 import com.badlogic.gdx.scenes.scene2d.ui.Table;
 import com.badlogic.gdx.scenes.scene2d.ui.TextButton;
+import com.badlogic.gdx.scenes.scene2d.ui.VerticalGroup;
 import com.badlogic.gdx.scenes.scene2d.utils.ChangeListener;
 import com.badlogic.gdx.scenes.scene2d.utils.ClickListener;
+import com.badlogic.gdx.scenes.scene2d.utils.Drawable;
 import com.badlogic.gdx.scenes.scene2d.utils.TextureRegionDrawable;
+import com.badlogic.gdx.utils.Align;
 import com.badlogic.gdx.utils.Array;
 
 import zero1hd.rhythmbullet.audio.MusicMetadataController;
+import zero1hd.rhythmbullet.audio.metadata.AudioMetadata;
 import zero1hd.rhythmbullet.audio.MusicController;
 import zero1hd.rhythmbullet.graphics.ui.Page;
-import zero1hd.rhythmbullet.graphics.ui.components.MusicSelectable;
-import zero1hd.rhythmbullet.graphics.ui.components.MusicSelectableButtonGroup;
 import zero1hd.rhythmbullet.graphics.ui.components.ScrollText;
 
 public class MusicSelectionPage extends Page implements Observer {
@@ -39,21 +44,13 @@ public class MusicSelectionPage extends Page implements Observer {
 	private MusicController mc;
 	private MusicMetadataController mmc;
 	private MusicSelectableButtonGroup selectables;
-	private Stack stackSelectables;
+	private VerticalGroup vGroup;
 	private TextButton back;
-	private ScrollPane musicTableScrollPane;
+	private ScrollPane scrollPane;
 	
-	private ClickListener selectionListener;
-	private musicSelectionLoaderThread thread;
+	private musicSelectionLoaderThread selectionLoaderThread;
 	
-	private Table musicInfoTable;
-	private Table musicSubInfo;
-	private ScrollText songTitle;
-	private Label author;
-	private Label songLength;
-	private Label previousTop;
-	private Label ratedDifficulty;
-	private Image albumCover;
+	private InformationTable musicInfoTable;
 	
 	private AssetManager assets;
 	private Skin skin;
@@ -63,23 +60,25 @@ public class MusicSelectionPage extends Page implements Observer {
 	private TextButton beginButton;
 	
 	private float scrollTimer, scrollDelay = 0.2f, scrollDelMod, songSelectionTimer;
-	
+	private float musicSelectDelay;
 	public MusicSelectionPage(AssetManager assetManager, Skin skin, MusicController musicController, MusicMetadataController musicMetadataController, ChangeListener backButtonListener, ChangeListener beginButtonListener) {
 		super(1, 0);
 		this.assets = assetManager;
 		this.mc = musicController;
 		this.mmc = musicMetadataController;
 		this.skin = skin;
-		stackSelectables = new Stack();
+		vGroup = new VerticalGroup();
+		vGroup.space(10f);
 		selectables = new MusicSelectableButtonGroup();
+		selectables.setMinCheckCount(0);
 		musicFileAnnotation = Gdx.app.getPreferences("music_file_annotation");
 		
-		musicTableScrollPane = new ScrollPane(stackSelectables, skin);
-		musicTableScrollPane.setSize(0.45f*getWidth(), getHeight());
-		musicTableScrollPane.setFadeScrollBars(false);
-		musicTableScrollPane.setOverscroll(false, false);
-		musicTableScrollPane.setColor(Color.BLUE);
-		addActor(musicTableScrollPane);
+		scrollPane = new ScrollPane(vGroup, skin);
+		scrollPane.setSize(0.45f*getWidth(), getHeight());
+		scrollPane.setOverscroll(false, false);
+		scrollPane.setClamp(true);
+		scrollPane.setColor(Color.BLUE);
+		addActor(scrollPane);
 		back = new TextButton("Back", skin);
 		back.setWidth(back.getWidth()+20f);
 		back.setPosition(getWidth()-back.getWidth()-15f, getHeight() - back.getHeight() - 15f);
@@ -114,51 +113,15 @@ public class MusicSelectionPage extends Page implements Observer {
 			}
 		});
 		
-		musicInfoTable = new Table();
-		musicInfoTable.defaults().center();
-		musicInfoTable.setPosition(musicTableScrollPane.getWidth() + musicTableScrollPane.getX(), 0);
-		musicInfoTable.setSize(getWidth()-musicTableScrollPane.getWidth(), getHeight());
+		musicInfoTable = new InformationTable(getWidth()-scrollPane.getWidth(), getHeight());
 		addActor(musicInfoTable);
-		musicSubInfo = new Table(skin);
-		musicSubInfo.setBackground("corner-panel");
-		songTitle = new ScrollText("", null, skin, true, true);
-		author = new Label(null, skin, "sub-font", skin.getColor("default"));
-		songLength = new Label(null, skin, "sub-font", skin.getColor("default"));
-		previousTop = new Label(null, skin, "sub-font", skin.getColor("default"));
-		ratedDifficulty = new Label(null, skin, "sub-font", skin.getColor("default"));
-		albumCover = new Image(assets.get("defaultCover.png", Texture.class));
 		
 		beginButton = new TextButton("Begin", skin);
 		beginButton.addListener(beginButtonListener);
 		
 		mmc.addObserver(this);
-		
-		thread = new musicSelectionLoaderThread();
-		
-		selectionListener  = new ClickListener() {
-			public void clicked(InputEvent event, float x, float y) {
-				MusicSelectable selectable = (MusicSelectable) event.getListenerActor();
-				if (selectable.getMetadata().getTitle() != null) {
-					songTitle.setText(selectable.getMetadata().getTitle(), null);
-				} else {
-					songTitle.setText(selectable.getFileHandle().nameWithoutExtension(), null);
-				}
-				
-				author.setText(selectable.getMetadata().getAuthor());
-				
-				songLength.setText(selectable.getMetadata().getDuration());
-				
-				previousTop.setText("...");
-				
-				ratedDifficulty.setText("...");
-				
-				if (selectable.getMetadata().getAlbumCover() != null) {
-					albumCover.setDrawable(new TextureRegionDrawable(new TextureRegion(selectable.getMetadata().getAlbumCover())));
-				} else {
-					albumCover.setDrawable(new TextureRegionDrawable(new TextureRegion(assets.get("defaultCover.png", Texture.class))));
-				}
-			}
-		};
+		mc.addObserver(this);
+		selectionLoaderThread = new musicSelectionLoaderThread();
 	}
 	
 	@Override
@@ -193,74 +156,58 @@ public class MusicSelectionPage extends Page implements Observer {
 			if (songSelectionTimer <= 0f) {
 			}
 		}
-		
-		if (mc.getMusicList().isSearched() && selectables.getButtons().size == mc.getMusicList().getTotal()) {
-			if (selectables.getButtons().size != stackSelectables.getChildren().size) {
-				int index = selectables.getButtons().size - stackSelectables.getChildren().size - 1;
-				stackSelectables.add(selectables.getButtons().get(index));
-			} else {
-				if (selectables.getChecked() == null) {
-					selectables.setChecked(mc.getCurrentMusicFileHandle());
-				} else if (selectables.getChecked().getFileHandle() != mc.getCurrentMusicFileHandle()) {
-					songSelectionTimer += delta;
-					if (songSelectionTimer > 2f) {
-						mc.setMusicByFileHandle(selectables.getChecked().getFileHandle());
-					}
-				} else {
-					songSelectionTimer = 0;
-				}
+		if (mc.getMusicList().isSearched()) {
+			if (mc.getMusicList().getTotal() != 0) {
+				
 			}
 		}
+		
+		updateList(delta);
+		
 		super.act(delta);
 	}
 	
+	private void updateList(float delta) {
+		if (mc.getMusicList().isSearched()) {
+			if (mc.getMusicList().getTotal() != 0) {
+				if (selectables.size() != mmc.size()) {
+					MusicSelectable selectable = new MusicSelectable(mmc.getMetadata(selectables.size()));
+					selectables.add(selectable);
+				} else if (selectables.size() != vGroup.getChildren().size) {
+					vGroup.addActor(selectables.getButtons().get(vGroup.getChildren().size));
+				} else {
+					if (selectables.getChecked() == null) {
+						selectables.setMinCheckCount(1);
+						selectables.setChecked(mc.getCurrentMusicFileHandle());
+						scrollPane.scrollTo(selectables.getChecked().getX(), selectables.getChecked().getY(), selectables.getChecked().getWidth(), selectables.getChecked().getHeight());
+					} else if (selectables.getChecked().getMetadata().getFileHandle() != mc.getCurrentMusicFileHandle()) {
+						musicSelectDelay += delta;
+						if (musicSelectDelay >= 1f) {
+							mc.setMusicByFileHandle(selectables.getChecked().getMetadata().getFileHandle());
+							musicSelectDelay = 0;
+						}
+					}
+				}
+			} else {
+				//TODO: Error message reporting empty music list or something
+			}
+		}
+	}
+	
 	private void scrollDown() {
 		selectables.selectNext();
-		musicTableScrollPane.scrollTo(selectables.getChecked().getX(), selectables.getChecked().getY(), selectables.getChecked().getWidth(), selectables.getChecked().getHeight());
+		scrollPane.scrollTo(selectables.getChecked().getX(), selectables.getChecked().getY(), selectables.getChecked().getWidth(), selectables.getChecked().getHeight());
 	}
 	
 	private void scrollUp() {
 		selectables.selectPrevious();
-		musicTableScrollPane.scrollTo(selectables.getChecked().getX(), selectables.getChecked().getY(), selectables.getChecked().getWidth(), selectables.getChecked().getHeight());
+		scrollPane.scrollTo(selectables.getChecked().getX(), selectables.getChecked().getY(), selectables.getChecked().getWidth(), selectables.getChecked().getHeight());
 	}
 	
 	public FileHandle getSelectedMusic() {
 		return selectables.getChecked().getMetadata().getFileHandle();
 	}
 	
-	public void refreshUIList() {
-		selectables.clear();
-		
-		mmc.loadAudioMetadata();
-		selectables.clear();
-		musicInfoTable.clear();
-		musicSubInfo.clear();
-		
-		Gdx.app.debug("MusicSelectionPage", "Refreshing...");
-		
-		songTitle.setText("loading...", null);
-		musicInfoTable.add(songTitle).width(musicInfoTable.getWidth()*0.6f).spaceBottom(30f);
-		musicInfoTable.row();
-		author.setText("...");
-		musicSubInfo.add(author);
-		musicSubInfo.row();
-		songLength.setText("...");
-		musicSubInfo.add(songLength);
-		musicSubInfo.row();
-		previousTop.setText("...");
-		musicSubInfo.add(previousTop);
-		musicSubInfo.row();
-		ratedDifficulty.setText("...");
-		musicSubInfo.add(ratedDifficulty);
-		musicSubInfo.pack();
-		musicInfoTable.add(musicSubInfo).spaceBottom(20f);
-		musicInfoTable.row();
-		albumCover.setDrawable(new TextureRegionDrawable(new TextureRegion(assets.get("defaultCover.png", Texture.class))));
-		musicInfoTable.add(albumCover).size(musicInfoTable.getWidth()/2f);
-		musicInfoTable.row();
-		musicInfoTable.add(beginButton).spaceTop(20f).fillX();
-	}
-	
 	@Override
 	public void dispose() {
 		super.dispose();
@@ -269,7 +216,12 @@ public class MusicSelectionPage extends Page implements Observer {
 	@Override
 	public void update(Observable o, Object arg) {
 		if (o == mmc) {
-			thread.start();
+			musicInfoTable.setToDefault();
+			selectionLoaderThread.start();
+		} else if (o == mc) {
+			if (mc.getMusicList().getTotal() == selectables.size() && mc.getCurrentMusicFileHandle() != selectables.getChecked().getMetadata().getFileHandle()) {
+				selectables.setChecked(mc.getCurrentMusicFileHandle());
+			}
 		}
 	}
 	
@@ -281,9 +233,9 @@ public class MusicSelectionPage extends Page implements Observer {
 	
 	private class musicSelectionLoaderThread implements Runnable {
 		private Thread thread;
-		private Array<MusicSelectable> queueList;
+		private Array<AudioMetadata> queueList;
 		private String name = "Music-Selection-Loader-Thread";
-		private volatile boolean work;
+		private volatile boolean work = true;
 		
 		public musicSelectionLoaderThread() {
 			queueList = new Array<>();
@@ -292,18 +244,23 @@ public class MusicSelectionPage extends Page implements Observer {
 		@Override
 		public void run() {
 			while (work) {
-				while (selectables.getButtons().size != mc.getMusicList().getTotal()) {
-					MusicSelectable selectable = new MusicSelectable(skin, assets.get("defaultCover.png"), mmc.getMetadata(selectables.getButtons().size), queueList);
-					selectable.addListener(selectionListener);
-					selectables.add(selectable);
+				if (selectables.size() != mmc.size()) {
+					selectables.clear();
+					for (int mid = 0; mid < mmc.size(); mid++) {
+
+					}
+					selectables.uncheckAll();
+				} else {
+					synchronized (this) {
+						while (queueList.size != 0) {
+							AudioMetadata metadata = queueList.pop();
+							metadata.loadAlbumCover();
+						}
+					}
+
 				}
 				
-				for (int i = 0; i < queueList.size; i++) {
-					queueList.get(i).loadAlbumCover();
-					queueList.removeIndex(i);
-				}
-				
-				synchronized (queueList) {
+				synchronized (this) {
 					try {
 						wait();
 					} catch (InterruptedException e) {
@@ -318,12 +275,259 @@ public class MusicSelectionPage extends Page implements Observer {
 				thread = new Thread(this, name);
 				thread.start();
 				return true;
-			}
-			synchronized (queueList) {
-				notify();
+			} else {
+				synchronized (this) {
+					notify();
+				}
 			}
 			return false;
 		}
 		
+		public synchronized void queue(AudioMetadata metadata) {
+			if (!queueList.contains(metadata, true)) {
+				queueList.add(metadata);
+				notify();
+			}
+		}
+		
+	}
+	
+	private class MusicSelectable extends Button {
+		private Vector2 actualCoords;
+		private Image albumCoverImage;
+		private Table informationTable;
+		private Label name, artist;
+		private Label time;
+		private float timeSinceOnScreen;
+		private AudioMetadata metadata;
+		private Texture defaultAlbumArt;
+		private TextureRegion albumArtTexture;
+		private boolean albumArtUsed, albumArtAttempted;
+		
+		public MusicSelectable(AudioMetadata metadata) {
+			super(skin, "music-selectable");
+			
+			this.metadata = metadata;
+			this.defaultAlbumArt = assets.get("defaultCover.png");
+			albumArtTexture = new TextureRegion(defaultAlbumArt);
+			
+			albumCoverImage = new Image();
+			updateAlbumArtImage(defaultAlbumArt);
+			
+			setSize(getPrefWidth(), getPrefHeight());
+			informationTable = new Table();
+			informationTable.row().width(0.75f*getWidth());
+			name = new Label(metadata.getTitle(), skin, "default-font", skin.getColor("default"));
+			name.setEllipsis(true);
+			informationTable.add(name).colspan(2).left().expand();
+			informationTable.row();
+			artist = new Label(metadata.getAuthor(), skin, "sub-font", skin.getColor("default"));
+			artist.setEllipsis(true);
+			informationTable.add(artist).left().width(getWidth()*0.375f);
+			time = new Label(metadata.getDuration(), skin, "sub-font", skin.getColor("default"));
+			informationTable.add(time).right();
+			add(informationTable).spaceRight(15f).padLeft(15f);
+
+			add(albumCoverImage).right().expandX().size(informationTable.getMinHeight());
+
+			albumCoverImage.setSize(100, 100);
+			actualCoords = new Vector2();
+		}
+
+		@Override
+		public void act(float delta) {
+			actualCoords.x = getX() + getParent().getX();
+			actualCoords.y = getY() + getParent().getY();
+
+			if ((actualCoords.y < 0 - getHeight() || actualCoords.y > getStage().getHeight() || actualCoords.x < 0 - getWidth() || actualCoords.x > getStage().getWidth()) && selectables.getChecked() != this) {
+				offScreenAct(delta);
+			} else {
+				onScreenAct(delta);
+			}
+			super.act(delta);
+		}
+
+		@Override
+		public void draw(Batch batch, float parentAlpha) {
+			synchronized (albumCoverImage) {
+				super.draw(batch, parentAlpha);
+			}
+		}
+		
+		public void onScreenAct(float delta) {
+			timeSinceOnScreen = 0;
+			if (metadata.getAlbumCover() != null && !albumArtUsed) {
+				updateAlbumArtImage(metadata.getAlbumCover());
+				albumArtUsed = true;
+			} else if (!albumArtAttempted) {
+				selectionLoaderThread.queue(metadata);
+				albumArtAttempted = true;
+			}
+		}
+
+		private void updateAlbumArtImage(Texture texture) {
+			if (texture == null) throw new IllegalArgumentException("Texture can't be null!");
+			albumArtTexture.setRegion(texture);
+			albumCoverImage.setDrawable(new TextureRegionDrawable(albumArtTexture));
+		}
+		
+		public void offScreenAct(float delta) {
+			if (metadata.getAlbumCover() != null) {
+				timeSinceOnScreen += delta;
+				if (timeSinceOnScreen >= 2) {
+					updateAlbumArtImage(defaultAlbumArt);
+					metadata.unloadAlbumCover();
+					albumArtUsed = false;
+					albumArtAttempted = false;
+				}
+			}
+		}
+
+		public AudioMetadata getMetadata() {
+			return metadata;
+		}
+		
+		public FileHandle getFileHandle() {
+			return metadata.getFileHandle();
+		}
+		
+		@Override
+		public float getPrefWidth() {
+			return scrollPane.getScrollWidth();
+		}
+		
+		@Override
+		public float getPrefHeight() {
+			return super.getPrefHeight();
+		}
+		
+		public TextureRegion getAlbumArtTexture() {
+			return albumArtTexture;
+		}
+	}
+	
+	private class MusicSelectableButtonGroup extends ButtonGroup<MusicSelectable> {
+		private Array<MusicSelectable> buttons;
+		
+		public MusicSelectableButtonGroup() {
+			buttons = getButtons();
+		}
+		
+		public void setChecked(FileHandle fileHandle) {
+			if (fileHandle == null) throw new IllegalArgumentException("fileHandle can't be null.");
+			MusicSelectable button;
+			for (int i = 0; i < buttons.size; i++) {
+				button = buttons.get(i);
+				if (button.getFileHandle() == fileHandle) {
+					button.setChecked(true);
+					return;
+				}
+			}
+			
+		}
+		
+		public void selectNext() {
+			int index = getCheckedIndex() + 1;
+			if (index == buttons.size) {
+				index = 0;
+			}
+			buttons.get(index).setChecked(true);
+		}
+		
+		public void selectPrevious() {
+			int index = getCheckedIndex() - 1;
+			if (index == -1) {
+				index = buttons.size -1;
+			}
+			buttons.get(index).setChecked(true);
+		}
+		
+		@Override
+		protected boolean canCheck(MusicSelectable button, boolean newState) {
+			if (newState) {
+				musicInfoTable.setDisplayedSelectable(button);
+			}
+			return super.canCheck(button, newState);
+		}
+		
+		public int size() {
+			return buttons.size;
+		}
+	}
+	
+	private class InformationTable extends Table {
+		private ScrollText songTitle;
+		private Label author;
+		private Label musicDuration;
+		private Label previousTop;
+		private Label ratedDifficulty;
+		private Image albumCover;
+		
+		private Table subInformation;
+		private MusicSelectable displayedSelectable;
+		
+		public InformationTable(float width, float height) {
+			defaults().center();
+			setPosition(scrollPane.getWidth() + scrollPane.getX(), 0);
+			setSize(width, height);
+			subInformation = new Table(skin);
+			subInformation.setBackground("corner-panel");
+			albumCover = new Image(assets.get("defaultCover.png", Texture.class));
+			songTitle = new ScrollText("", null, skin, true, true);
+			author = new Label(null, skin, "sub-font", skin.getColor("default"));
+			musicDuration = new Label(null, skin, "sub-font", skin.getColor("default"));
+			previousTop = new Label(null, skin, "sub-font", skin.getColor("default"));
+			ratedDifficulty = new Label(null, skin, "sub-font", skin.getColor("default"));
+		}
+		
+		public void setDisplayedSelectable(MusicSelectable displayedSelectable) {
+			this.displayedSelectable = displayedSelectable;
+			if (displayedSelectable != null) {
+				AudioMetadata metadata = displayedSelectable.getMetadata();
+				albumCover.setDrawable(new TextureRegionDrawable(displayedSelectable.getAlbumArtTexture()));
+				songTitle.setText(metadata.getTitle(), null);
+				author.setText(metadata.getAuthor());
+				musicDuration.setText(metadata.getDuration());
+				//TODO previous top
+				//TODO rated difficulty
+				beginButton.setDisabled(false);
+			} else {
+				albumCover.setDrawable(new TextureRegionDrawable(new TextureRegion(assets.get("defaultCover.png", Texture.class))));
+				songTitle.setText("loading...", null);
+				author.setText("...");
+				musicDuration.setText("...");
+				previousTop.setText("...");
+				ratedDifficulty.setText("...");
+			}
+		}
+		
+		public void setToDefault() {
+			clear();
+			subInformation.clear();
+			
+			albumCover.setDrawable(new TextureRegionDrawable(new TextureRegion(assets.get("defaultCover.png", Texture.class))));
+			add(albumCover).size(getWidth()/2f).spaceBottom(25f);
+			row();
+			songTitle.setText("...", null);
+			add(songTitle).width(getWidth()*0.6f).spaceBottom(30f);
+			row();
+			author.setText("...");
+			author.setEllipsis(true);
+			author.setAlignment(Align.center);
+			subInformation.add(author).expand();
+			subInformation.row();
+			musicDuration.setText("...");
+			subInformation.add(musicDuration);
+			subInformation.row();
+			previousTop.setText("...");
+			subInformation.add(previousTop);
+			subInformation.row();
+			ratedDifficulty.setText("...");
+			subInformation.add(ratedDifficulty);
+			add(subInformation).width(0.4f*getWidth());
+			row();
+			add(beginButton).spaceTop(20f).fillX();
+			beginButton.setDisabled(true);
+		}
 	}
 }

desktop/src/zero1hd/rhythmbullet/desktop/screens/main/OptionsPage.java

@@ -127,12 +127,12 @@ public class OptionsPage extends Page {
 		optionsTable.row();
 		
 		Label usageLabel = new Label("Current usage (lower the better): " + 100f*((float)(Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory())/(float)Runtime.getRuntime().totalMemory()) + "%", skin) {
-			float refreshTime = 60;
+			float refreshTime = 20;
 			@Override
 			public void act(float delta) {
 				refreshTime -= delta;
 				if (refreshTime <= 0) {
-					refreshTime = 60;
+					refreshTime = 20;
 					setText("Current usage (lower the better): " + 100f*((float)(Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory())/(float)Runtime.getRuntime().totalMemory()) + "%");
 				}
 				super.act(delta);