Added a crude music player and fixed a lot of OpenAL stuff

- Game will now play all Vorbis files in music/ directory (at runtime)
  - Random order with random pauses (15 to 60 sec)
  - Force start by pressing M
- Added AudioRegistry for performance
- Speakers now can change data correctly
- Added ResourceReaders
  - Classpath and Filesystem for now
- Added local controls. Use with ControlTriggers.localOf(...)

NB: No actual music files included (yet). Place them in music/ directory
of the game directory (e.g. in <project>/run/music).

src/main/java/ru/windcorp/progressia/client/ClientProxy.java

@@ -32,6 +32,7 @@ import ru.windcorp.progressia.common.resource.ResourceManager;
 import ru.windcorp.progressia.common.util.crash.CrashReports;
 import ru.windcorp.progressia.server.ServerState;
 import ru.windcorp.progressia.test.TestContent;
+import ru.windcorp.progressia.test.TestMusicPlayer;
 
 public class ClientProxy implements Proxy {
 
@@ -59,6 +60,8 @@ public class ClientProxy implements Proxy {
 
 		ServerState.startServer();
 		ClientState.connectToLocalServer();
+		
+		TestMusicPlayer.start();
 	}
 
 }

src/main/java/ru/windcorp/progressia/client/audio/AudioManager.java

@@ -23,6 +23,7 @@ import ru.windcorp.progressia.client.audio.backend.AudioReader;
 import ru.windcorp.progressia.client.audio.backend.Listener;
 import ru.windcorp.progressia.client.audio.backend.SoundType;
 import ru.windcorp.progressia.client.audio.backend.Speaker;
+import ru.windcorp.progressia.common.resource.Resource;
 
 import static org.lwjgl.openal.AL11.*;
 import static org.lwjgl.openal.ALC10.*;
@@ -40,7 +41,6 @@ public class AudioManager {
 
 	private static List<Speaker> soundSpeakers = new ArrayList<>(SOUNDS_NUM);
 	private static Speaker musicSpeaker;
-	private static ArrayList<SoundType> soundsBuffer = new ArrayList<>();
 
 	public static void initAL() {
 		String defaultDeviceName = alcGetString(
@@ -82,18 +82,6 @@ public class AudioManager {
 		return speaker;
 	}
 
-	private static SoundType findSoundType(String soundID) throws Exception {
-		for (SoundType s : soundsBuffer) {
-			if (s.getId().equals(soundID)) {
-				return s;
-			}
-		}
-		throw new Exception(
-			"ERROR: The selected sound is not loaded or" +
-				" not exists"
-		);
-	}
-
 	public static Speaker initSpeaker(SoundType st) {
 		Speaker speaker = getLastSpeaker();
 		try {
@@ -104,20 +92,9 @@ public class AudioManager {
 		return speaker;
 	}
 
-	public static SoundType getSoundType(String id) {
+	public static Speaker initMusicSpeaker(SoundType st) {
-		SoundType st;
 		try {
-			st = findSoundType(id);
+			st.initSpeaker(musicSpeaker);
-		} catch (Exception ex) {
-			throw new RuntimeException();
-		}
-		return st;
-	}
-
-
-	public static Speaker initMusicSpeaker(String soundID) {
-		try {
-			findSoundType(soundID).initSpeaker(musicSpeaker);
 		} catch (Exception ex) {
 			throw new RuntimeException();
 		}
@@ -131,11 +108,11 @@ public class AudioManager {
 		}
 	}
 
-	public static void loadSound(String path, String id, AudioFormat format) {
+	public static void loadSound(Resource resource, String id, AudioFormat format) {
 		if (format == AudioFormat.MONO) {
-			soundsBuffer.add(AudioReader.readAsMono(path, id));
+			AudioRegistry.getInstance().register(AudioReader.readAsMono(resource, id));
 		} else {
-			soundsBuffer.add(AudioReader.readAsStereo(path, id));
+			AudioRegistry.getInstance().register(AudioReader.readAsStereo(resource, id));
 		}
 	}
 

src/main/java/ru/windcorp/progressia/client/audio/AudioRegistry.java

@@ -0,0 +1,34 @@
+/*
+ * Progressia
+ * Copyright (C)  2020-2021  Wind Corporation and contributors
+ *
+ * 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 ru.windcorp.progressia.client.audio;
+
+import ru.windcorp.progressia.client.audio.backend.SoundType;
+import ru.windcorp.progressia.common.util.namespaces.NamespacedInstanceRegistry;
+
+public class AudioRegistry extends NamespacedInstanceRegistry<SoundType> {
+	
+	private static final AudioRegistry INSTANCE = new AudioRegistry();
+	
+	/**
+	 * @return the instance
+	 */
+	public static AudioRegistry getInstance() {
+		return INSTANCE;
+	}
+
+}

src/main/java/ru/windcorp/progressia/client/audio/AudioSystem.java

@@ -18,6 +18,8 @@
  
 package ru.windcorp.progressia.client.audio;
 
+import ru.windcorp.progressia.common.resource.ResourceManager;
+
 public class AudioSystem {
 	static public void initialize() {
 		AudioManager.initAL();
@@ -28,7 +30,7 @@ public class AudioSystem {
 
 	static void loadAudioData() {
 		AudioManager.loadSound(
-			"assets/sounds/block_destroy_clap.ogg",
+			ResourceManager.getResource("assets/sounds/block_destroy_clap.ogg"),
 			"Progressia:BlockDestroy",
 			AudioFormat.MONO
 		);

src/main/java/ru/windcorp/progressia/client/audio/Music.java

@@ -19,24 +19,33 @@
 package ru.windcorp.progressia.client.audio;
 
 import glm.vec._3.Vec3;
+import ru.windcorp.progressia.client.audio.backend.SoundType;
+import ru.windcorp.progressia.client.audio.backend.Speaker;
 
 public class Music 
 	extends Sound {
 	
+	
+	
+	public Music(SoundType soundType, int timeLength, float pitch, float gain) {
+		super(soundType, timeLength, new Vec3(), new Vec3(), pitch, gain);
+	}
+
+	public Music(SoundType soundType) {
+		super(soundType);
+	}
+
+	public Music(String id, int timeLength, float pitch, float gain) {
+		super(id, timeLength, new Vec3(), new Vec3(), pitch, gain);
+	}
+
 	public Music(String id) {
 		super(id);
 	}
 
-	public Music(
+	@Override
-		String id,
+	protected Speaker initSpeaker() {
-		Vec3 velocity,
+		return AudioManager.initMusicSpeaker(soundType);
-		float pitch,
-		float gain
-	) {
-		this(id);
-		super.velocity = velocity;
-		super.pitch = pitch;
-		super.gain = gain;
 	}
 	
 	@Override

src/main/java/ru/windcorp/progressia/client/audio/Sound.java

@@ -32,8 +32,12 @@ public class Sound {
 	
 	protected SoundType soundType;
 	
+	public Sound(SoundType soundType) {
+		this.soundType = soundType;
+	}
+
 	public Sound(String id) {
-		soundType = AudioManager.getSoundType(id);
+		this(AudioRegistry.getInstance().get(id));
 	}
 	
 	public Sound(
@@ -51,8 +55,27 @@ public class Sound {
 		this.gain = gain;
 	}
 	
+	public Sound(
+		SoundType soundType,
+		int timeLength,
+		Vec3 position,
+		Vec3 velocity,
+		float pitch,
+		float gain
+	) {
+		this(soundType);
+		this.position = position;
+		this.velocity = velocity;
+		this.pitch = pitch;
+		this.gain = gain;
+	}
+	
+	protected Speaker initSpeaker() {
+		return AudioManager.initSpeaker(soundType);
+	}
+
 	public void play(boolean loop) {
-		Speaker speaker = AudioManager.initSpeaker(soundType);
+		Speaker speaker = initSpeaker();
 		speaker.setGain(gain);
 		speaker.setPitch(pitch);
 		speaker.setPosition(position);
@@ -97,8 +120,8 @@ public class Sound {
 		return pitch;
 	}
 	
-	public int getTimeLength() {
+	public double getDuration() {
-		return soundType.getTimeLength();
+		return soundType.getDuration();
 	}
 
 }

src/main/java/ru/windcorp/progressia/client/audio/backend/AudioReader.java

@@ -33,13 +33,11 @@ public class AudioReader {
 	}
 
 	// TODO fix converting from mono-stereo
-	private static SoundType readAsSpecified(String path, String id, int format) {
+	private static SoundType readAsSpecified(Resource resource, String id, int format) {
 		IntBuffer channelBuffer = BufferUtils.createIntBuffer(1);
 		IntBuffer rateBuffer = BufferUtils.createIntBuffer(1);
 
-		Resource res = ResourceManager.getResource(path);
+		ShortBuffer rawAudio = decodeVorbis(resource, channelBuffer, rateBuffer);
-
-		ShortBuffer rawAudio = decodeVorbis(res, channelBuffer, rateBuffer);
 
 		return new SoundType(
 			id,
@@ -49,12 +47,12 @@ public class AudioReader {
 		);
 	}
 
-	public static SoundType readAsMono(String path, String id) {
+	public static SoundType readAsMono(Resource resource, String id) {
-		return readAsSpecified(path, id, AL_FORMAT_MONO16);
+		return readAsSpecified(resource, id, AL_FORMAT_MONO16);
 	}
 
-	public static SoundType readAsStereo(String path, String id) {
+	public static SoundType readAsStereo(Resource resource, String id) {
-		return readAsSpecified(path, id, AL_FORMAT_STEREO16);
+		return readAsSpecified(resource, id, AL_FORMAT_STEREO16);
 	}
 
 	private static ShortBuffer decodeVorbis(

src/main/java/ru/windcorp/progressia/client/audio/backend/SoundType.java

@@ -21,6 +21,9 @@ package ru.windcorp.progressia.client.audio.backend;
 import ru.windcorp.progressia.common.util.namespaces.Namespaced;
 
 import java.nio.ShortBuffer;
+
+import org.lwjgl.openal.AL10;
+
 import static org.lwjgl.openal.AL11.*;
 
 public class SoundType extends Namespaced {
@@ -29,7 +32,7 @@ public class SoundType extends Namespaced {
 	private int sampleRate;
 	private int format;
 	private int audioBuffer;
-	private int timeLength;
+	private double duration;
 
 	public SoundType(
 		String id,
@@ -47,14 +50,14 @@ public class SoundType extends Namespaced {
 	private void createAudioBuffer() {
 		this.audioBuffer = alGenBuffers();
 		alBufferData(audioBuffer, format, rawAudio, sampleRate);
-		timeLength = rawAudio.limit() / sampleRate;
+		duration = rawAudio.limit() / (double) sampleRate / (format == AL10.AL_FORMAT_STEREO16 ? 2 : 1);
 	}
 
 	public void initSpeaker(Speaker speaker) {
 		speaker.setAudioData(audioBuffer);
 	}
 	
-	public int getTimeLength() {
+	public double getDuration() {
-		return timeLength;
+		return duration;
 	}
 }

src/main/java/ru/windcorp/progressia/client/audio/backend/Speaker.java

@@ -120,6 +120,7 @@ public class Speaker {
 	}
 
 	public void setAudioData(int audioData) {
+		stop();
 		this.audioData = audioData;
 		alSourcei(this.sourceData, AL_BUFFER, audioData);
 	}

src/main/java/ru/windcorp/progressia/client/comms/controls/ControlTriggerLocalLambda.java

@@ -0,0 +1,53 @@
+/*
+ * Progressia
+ * Copyright (C)  2020-2021  Wind Corporation and contributors
+ *
+ * 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 ru.windcorp.progressia.client.comms.controls;
+
+import java.util.function.Consumer;
+import java.util.function.Predicate;
+
+import ru.windcorp.progressia.client.graphics.input.InputEvent;
+import ru.windcorp.progressia.common.comms.controls.PacketControl;
+
+public class ControlTriggerLocalLambda extends ControlTriggerInputBased {
+
+	private final Predicate<InputEvent> predicate;
+	private final Consumer<InputEvent> action;
+
+	public ControlTriggerLocalLambda(
+		String id,
+		Predicate<InputEvent> predicate,
+		Consumer<InputEvent> action
+	) {
+		super(id);
+
+		this.predicate = predicate;
+		this.action = action;
+	}
+
+	@Override
+	public PacketControl onInputEvent(InputEvent event) {
+		if (!predicate.test(event))
+			return null;
+
+		action.accept(event);
+
+		return null;
+	}
+
+}

src/main/java/ru/windcorp/progressia/client/comms/controls/ControlTriggers.java

@@ -143,6 +143,96 @@ public class ControlTriggers {
 		);
 	}
 	
+	//
+	//
+	///
+	///
+	//
+	//
+	//
+	//
+	//
+	//
+	//
+	//
+	//
+	
+	public static ControlTriggerInputBased localOf(
+		String id,
+		Consumer<InputEvent> action,
+		Predicate<InputEvent> predicate
+	) {
+		return new ControlTriggerLocalLambda(id, predicate, action);
+	}
+
+	public static ControlTriggerInputBased localOf(
+		String id,
+		Runnable action,
+		Predicate<InputEvent> predicate
+	) {
+		return localOf(
+			id,
+			input -> action.run(),
+			predicate
+		);
+	}
+
+	@SafeVarargs
+	public static <I extends InputEvent> ControlTriggerInputBased localOf(
+		String id,
+		Class<I> inputType,
+		Consumer<I> action,
+		Predicate<I>... predicates
+	) {
+		return localOf(
+			id,
+			createCheckedAction(inputType, action),
+			createCheckedCompoundPredicate(inputType, predicates)
+		);
+	}
+
+	@SafeVarargs
+	public static <I extends InputEvent> ControlTriggerInputBased localOf(
+		String id,
+		Class<I> inputType,
+		Runnable action,
+		Predicate<I>... predicates
+	) {
+		return localOf(
+			id,
+			inputType,
+			input -> action.run(),
+			predicates
+		);
+	}
+
+	@SafeVarargs
+	public static ControlTriggerInputBased localOf(
+		String id,
+		Consumer<InputEvent> action,
+		Predicate<InputEvent>... predicates
+	) {
+		return localOf(
+			id,
+			InputEvent.class,
+			action,
+			predicates
+		);
+	}
+
+	@SafeVarargs
+	public static <I extends InputEvent> ControlTriggerInputBased localOf(
+		String id,
+		Runnable action,
+		Predicate<InputEvent>... predicates
+	) {
+		return of(
+			id,
+			input -> action.run(),
+			predicates
+		);
+	}
+
 	private static <I extends InputEvent> BiConsumer<InputEvent, ControlData> createCheckedDataWriter(
 		Class<I> inputType,
 		BiConsumer<I, ControlData> dataWriter
@@ -150,6 +240,13 @@ public class ControlTriggers {
 		return (inputEvent, control) -> dataWriter.accept(inputType.cast(inputEvent), control);
 	}
 	
+	private static <I extends InputEvent> Consumer<InputEvent> createCheckedAction(
+		Class<I> inputType,
+		Consumer<I> action
+	) {
+		return inputEvent -> action.accept(inputType.cast(inputEvent));
+	}
+
 	private static <I extends InputEvent> Predicate<InputEvent> createCheckedCompoundPredicate(
 		Class<I> inputType,
 		Predicate<I>[] predicates

src/main/java/ru/windcorp/progressia/common/resource/ClasspathResourceReader.java

@@ -0,0 +1,31 @@
+/*
+ * Progressia
+ * Copyright (C)  2020-2021  Wind Corporation and contributors
+ *
+ * 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 ru.windcorp.progressia.common.resource;
+
+import java.io.InputStream;
+
+import ru.windcorp.progressia.Progressia;
+
+public class ClasspathResourceReader implements ResourceReader {
+
+	@Override
+	public InputStream read(String name) {
+		return Progressia.class.getClassLoader().getResourceAsStream(name);
+	}
+
+}

src/main/java/ru/windcorp/progressia/common/resource/FilesystemResourceReader.java

@@ -0,0 +1,36 @@
+/*
+ * Progressia
+ * Copyright (C)  2020-2021  Wind Corporation and contributors
+ *
+ * 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 ru.windcorp.progressia.common.resource;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+public class FilesystemResourceReader implements ResourceReader {
+
+	@Override
+	public InputStream read(String name) {
+		try {
+			return Files.newInputStream(Paths.get(name));
+		} catch (IOException e) {
+			return null;
+		}
+	}
+
+}

src/main/java/ru/windcorp/progressia/common/resource/Resource.java

@@ -30,19 +30,24 @@ import org.lwjgl.BufferUtils;
 import com.google.common.io.ByteStreams;
 import com.google.common.io.CharStreams;
 
-import ru.windcorp.progressia.Progressia;
 import ru.windcorp.progressia.common.util.Named;
 import ru.windcorp.progressia.common.util.crash.CrashReports;
 
 public class Resource extends Named {
 	
-	public Resource(String name) {
+	private final ResourceReader resourceReader;
+
+	public Resource(String name, ResourceReader resourceReader) {
 		super(name);
+		this.resourceReader = resourceReader;
 	}
 
 	public InputStream getInputStream() {
-		// TODO Do proper resource lookup
+		return getResourceReader().read(getName());
-		return Progressia.class.getClassLoader().getResourceAsStream(getName());
+	}
+	
+	public ResourceReader getResourceReader() {
+		return resourceReader;
 	}
 
 	public Reader getReader() {

src/main/java/ru/windcorp/progressia/common/resource/ResourceManager.java

@@ -20,8 +20,15 @@ package ru.windcorp.progressia.common.resource;
 
 public class ResourceManager {
 	
+	private static final ResourceReader CLASSPATH_READER = new ClasspathResourceReader();
+	private static final ResourceReader FILESYSTEM_READER = new FilesystemResourceReader();
+
 	public static Resource getResource(String name) {
-		return new Resource(name);
+		return new Resource(name, CLASSPATH_READER);
+	}
+	
+	public static Resource getFileResource(String name) {
+		return new Resource(name, FILESYSTEM_READER);
 	}
 
 	public static Resource getTextureResource(String name) {

src/main/java/ru/windcorp/progressia/common/resource/ResourceReader.java

@@ -0,0 +1,26 @@
+/*
+ * Progressia
+ * Copyright (C)  2020-2021  Wind Corporation and contributors
+ *
+ * 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 ru.windcorp.progressia.common.resource;
+
+import java.io.InputStream;
+
+public interface ResourceReader {
+	
+	InputStream read(String name);
+
+}

src/main/java/ru/windcorp/progressia/test/TestContent.java

@@ -287,6 +287,15 @@ public class TestContent {
 			)
 		);
 		logic.register(ControlLogic.of("Test:PlaceTile", TestContent::onTilePlaceReceived));
+		
+		triggers.register(
+			ControlTriggers.localOf(
+				"Test:StartNextMusic",
+				KeyEvent.class,
+				TestMusicPlayer::startNextNow,
+				KeyMatcher.of(GLFW.GLFW_KEY_M).matcher()
+			)
+		);
 	}
 
 	private static void register(BlockData x) {

src/main/java/ru/windcorp/progressia/test/TestMusicPlayer.java

@@ -0,0 +1,152 @@
+/*
+ * Progressia
+ * Copyright (C)  2020-2021  Wind Corporation and contributors
+ *
+ * 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 ru.windcorp.progressia.test;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Random;
+
+import org.apache.logging.log4j.LogManager;
+
+import ru.windcorp.progressia.client.audio.AudioFormat;
+import ru.windcorp.progressia.client.audio.AudioManager;
+import ru.windcorp.progressia.client.audio.AudioRegistry;
+import ru.windcorp.progressia.client.audio.Music;
+import ru.windcorp.progressia.client.audio.Sound;
+import ru.windcorp.progressia.client.audio.backend.SoundType;
+import ru.windcorp.progressia.common.resource.ResourceManager;
+import ru.windcorp.progressia.common.util.crash.CrashReports;
+
+public class TestMusicPlayer implements Runnable {
+	
+	private static final int MIN_SILENCE = 15 * 1000; // 15 seconds
+	private static final int MAX_SILENCE = 60 * 1000; // one minute
+	
+	private static TestMusicPlayer instance = null;
+	
+	private final List<SoundType> compositions = new ArrayList<>();
+	
+	private final Random random = new Random();
+	private long nextStart;
+	private Sound lastStarted = null;
+	
+	public TestMusicPlayer() {
+		this.nextStart = System.currentTimeMillis();
+		
+		instance = this;
+	}
+	
+	public static void start() {
+		Thread thread = new Thread(new TestMusicPlayer(), "Music Thread");
+		thread.setDaemon(true);
+		thread.start();
+	}
+	
+	@Override
+	public void run() {
+		loadCompositions();
+		
+		if (compositions.isEmpty()) {
+			LogManager.getLogger().warn("No music found");
+			return;
+		}
+		
+		while (true) {
+			
+			try {
+				synchronized (this) {
+					while (true) {
+						long now = System.currentTimeMillis();
+						if (nextStart > now) {
+							wait(nextStart - now);
+						} else {
+							break;
+						}
+					}
+				}
+			} catch (InterruptedException e) {
+				LogManager.getLogger().warn("Received interrupt in music thread, terminating thread...");
+				return;
+			}
+			
+			startNextComposition();
+			
+		}
+	}
+
+	private void loadCompositions() {
+		try {
+			
+			Path directory = Paths.get("music");
+			
+			if (!Files.isDirectory(directory)) {
+				Files.createDirectories(directory);
+			}
+			
+			Iterator<Path> it = Files.walk(directory).filter(Files::isRegularFile).iterator();
+			int i = 0;
+			
+			while (it.hasNext()) {
+				String file = it.next().toString();
+				if (!file.endsWith(".ogg") && !file.endsWith(".oga")) {
+					LogManager.getLogger().warn("Skipping " + file + ": not .ogg nor .oga");
+				}
+				
+				String id = "Progressia:Music" + (i++);
+				
+				AudioManager.loadSound(ResourceManager.getFileResource(file.toString()), id, AudioFormat.STEREO);
+				SoundType composition = AudioRegistry.getInstance().get(id);
+				compositions.add(composition);
+				
+				LogManager.getLogger().info("Loaded " + file);
+			}
+			
+		} catch (IOException e) {
+			throw CrashReports.report(e, "Could not load music");
+		}
+	}
+
+	private synchronized void startNextComposition() {
+		int index = random.nextInt(compositions.size());
+		SoundType composition = compositions.get(index);
+		
+		long now = System.currentTimeMillis();
+		long durationInMs = (long) (composition.getDuration() * 1000);
+		long silence = random.nextInt(MAX_SILENCE - MIN_SILENCE) + MIN_SILENCE;
+		
+		nextStart = now + durationInMs + silence;
+		
+		lastStarted = new Music(composition);
+		lastStarted.play(false);
+	}
+	
+	public static void startNextNow() {
+		if (instance == null) return;
+		
+		synchronized (instance) {
+			instance.nextStart = System.currentTimeMillis();
+			instance.notifyAll();
+		}
+	}
+
+}