FInal fields, tweaks to screen system, deferred loading.

src/mightypork/rogue/App.java

@@ -8,12 +8,16 @@ import java.util.ArrayList;
 
 import javax.swing.JOptionPane;
 
-import mightypork.rogue.audio.SoundSystem;
 import mightypork.rogue.bus.events.*;
-import mightypork.rogue.gui.screens.ScreenRegistry;
+import mightypork.rogue.bus.events.ActionRequest.RequestType;
+import mightypork.rogue.gui.ScreenRegistry;
+import mightypork.rogue.gui.screens.test_bouncyboxes.ScreenTestBouncy;
+import mightypork.rogue.gui.screens.test_cat_sound.ScreenTestCat;
 import mightypork.rogue.input.InputSystem;
 import mightypork.rogue.input.KeyStroke;
 import mightypork.rogue.render.DisplaySystem;
+import mightypork.rogue.sound.SoundSystem;
+import mightypork.rogue.texture.DeferredLoader;
 import mightypork.utils.control.bus.EventBus;
 import mightypork.utils.control.bus.events.DestroyEvent;
 import mightypork.utils.control.bus.events.UpdateEvent;
@@ -41,8 +45,7 @@ public class App implements AppAccess {
 	private static SoundSystem soundSystem;
 	private EventBus eventBus;
 	private MainLoop mainLoop;
-	
-	public ScreenRegistry screens;
+	private ScreenRegistry screens;
 	
 	
 	/**
@@ -73,6 +76,8 @@ public class App implements AppAccess {
 		initialize();
 		
 		Log.i("Starting main loop...");
+		
+		// open first screen		
 		mainLoop.start();
 	}
 	
@@ -84,7 +89,12 @@ public class App implements AppAccess {
 	 */
 	public static void onCrash(Throwable error)
 	{
+		if (Log.ready()) {
 			Log.e("The game has crashed!", error);
+		} else {
+			System.err.println("The game has crashed!");
+			error.printStackTrace();
+		}
 		
 		if (inst != null) inst.shutdown();
 	}
@@ -93,12 +103,12 @@ public class App implements AppAccess {
 	@Override
 	public void shutdown()
 	{
-		bus().send(new DestroyEvent());
+		Log.i("Shutting down subsystems...");
 		
+		bus().send(new DestroyEvent());
 		bus().destroy();
 		
-		Log.i("Shutting down...");
-		
+		Log.i("Terminating...");
 		System.exit(0);
 	}
 	
@@ -142,6 +152,14 @@ public class App implements AppAccess {
 		soundSystem = new SoundSystem(this);
 		soundSystem.setMasterVolume(1);
 		
+		/*
+		 * Load resources
+		 */
+		Log.f1("Registering resources...");
+		bus().subscribe(new DeferredLoader(this));
+		
+		Res.load(this);
+		
 		/*
 		 * Input
 		 */
@@ -154,18 +172,14 @@ public class App implements AppAccess {
 		 */
 		Log.f2("Initializing screen registry...");
 		screens = new ScreenRegistry(this);
-		
-		/*
-		 * Load resources
-		 */
-		Log.f1("Registering resources...");
-		Res.load(this);
+		initScreens();
 		
 		/*
 		 * Prepare main loop
 		 */
 		Log.f1("Preparing main loop...");
 		ArrayList<Runnable> loopTasks = new ArrayList<Runnable>();
+		
 		loopTasks.add(new Runnable() {
 			
 			@Override
@@ -179,24 +193,44 @@ public class App implements AppAccess {
 	}
 	
 	
+	private void initScreens()
+	{
+		Log.f3("Registering game screens...");
+		
+		screens.add(new ScreenTestBouncy(this));
+		screens.add(new ScreenTestCat(this));
+		
+		screens.showScreen("test.cat");
+	}
+	
+	
 	private void initChannels()
 	{
 		Log.f3("Registering channels...");
 		
+		// framework events
 		bus().addChannel(DestroyEvent.class, Destroyable.class);
 		bus().addChannel(UpdateEvent.class, Updateable.class);
 		
+		// input events
 		bus().addChannel(ScreenChangeEvent.class, ScreenChangeEvent.Listener.class);
 		bus().addChannel(KeyboardEvent.class, KeyboardEvent.Listener.class);
 		bus().addChannel(MouseMotionEvent.class, MouseMotionEvent.Listener.class);
 		bus().addChannel(MouseButtonEvent.class, MouseButtonEvent.Listener.class);
+		
+		// control events
 		bus().addChannel(ScreenRequestEvent.class, ScreenRequestEvent.Listener.class);
+		bus().addChannel(ResourceLoadRequest.class, ResourceLoadRequest.Listener.class);
 		bus().addChannel(ActionRequest.class, ActionRequest.Listener.class);
+		bus().addChannel(MainLoopTaskRequest.class, MainLoopTaskRequest.Listener.class);
 	}
 	
 	
 	private void setupGlobalKeystrokes()
 	{
+		Log.f3("Setting up hot keys...");
+		
+		// Go fullscreen
 		input().bindKeyStroke(new KeyStroke(Keyboard.KEY_F11), new Runnable() {
 			
 			@Override
@@ -206,6 +240,7 @@ public class App implements AppAccess {
 			}
 		});
 		
+		// Take screenshot
 		input().bindKeyStroke(new KeyStroke(Keyboard.KEY_F2), new Runnable() {
 			
 			@Override
@@ -215,6 +250,7 @@ public class App implements AppAccess {
 			}
 		});
 		
+		// Exit
 		input().bindKeyStroke(new KeyStroke(Keyboard.KEY_LCONTROL, Keyboard.KEY_Q), new Runnable() {
 			
 			@Override

src/mightypork/rogue/AppAccess.java

@@ -1,9 +1,9 @@
 package mightypork.rogue;
 
 
-import mightypork.rogue.audio.SoundSystem;
 import mightypork.rogue.input.InputSystem;
 import mightypork.rogue.render.DisplaySystem;
+import mightypork.rogue.sound.SoundSystem;
 import mightypork.utils.control.bus.EventBus;
 
 

src/mightypork/rogue/AppAdapter.java

@@ -1,9 +1,9 @@
 package mightypork.rogue;
 
 
-import mightypork.rogue.audio.SoundSystem;
 import mightypork.rogue.input.InputSystem;
 import mightypork.rogue.render.DisplaySystem;
+import mightypork.rogue.sound.SoundSystem;
 import mightypork.utils.control.bus.EventBus;
 
 

src/mightypork/rogue/MainLoop.java

@@ -8,15 +8,15 @@ import java.util.concurrent.ConcurrentLinkedQueue;
 
 import mightypork.rogue.bus.Subsystem;
 import mightypork.rogue.bus.events.ActionRequest;
-import mightypork.rogue.bus.events.RequestType;
-import mightypork.rogue.bus.events.ScreenRequestEvent;
+import mightypork.rogue.bus.events.ActionRequest.RequestType;
+import mightypork.rogue.bus.events.MainLoopTaskRequest;
 import mightypork.rogue.tasks.TaskTakeScreenshot;
 import mightypork.rogue.util.Utils;
 import mightypork.utils.control.bus.events.UpdateEvent;
 import mightypork.utils.control.timing.TimerDelta;
 
 
-public class MainLoop extends Subsystem implements ActionRequest.Listener {
+public class MainLoop extends Subsystem implements ActionRequest.Listener, MainLoopTaskRequest.Listener {
 	
 	private Queue<Runnable> taskQueue = new ConcurrentLinkedQueue<Runnable>();
 	private List<Runnable> regularTasks;
@@ -35,8 +35,6 @@ public class MainLoop extends Subsystem implements ActionRequest.Listener {
 	
 	public void start()
 	{
-		bus().queue(new ScreenRequestEvent("test.texture"));
-		
 		timer = new TimerDelta();
 		
 		while (running) {
@@ -70,18 +68,19 @@ public class MainLoop extends Subsystem implements ActionRequest.Listener {
 	{
 		switch (request) {
 			case FULLSCREEN:
-				taskQueue.add(taskFullscreen);
+				queueTask(taskFullscreen);
 				break;
 			
 			case SCREENSHOT:
-				taskQueue.add(taskScreenshot);
+				queueTask(taskScreenshot);
 				break;
 			
 			case SHUTDOWN:
-				taskQueue.add(taskShutdown);
+				queueTask(taskShutdown);
 		}
 	}
 	
+	/** Take a screenshot */
 	private final Runnable taskScreenshot = new Runnable() {
 		
 		@Override
@@ -92,6 +91,7 @@ public class MainLoop extends Subsystem implements ActionRequest.Listener {
 		}
 	};
 	
+	/** Shutdown the application */
 	private final Runnable taskShutdown = new Runnable() {
 		
 		@Override
@@ -101,6 +101,7 @@ public class MainLoop extends Subsystem implements ActionRequest.Listener {
 		}
 	};
 	
+	/** Toggle fullscreen */
 	private final Runnable taskFullscreen = new Runnable() {
 		
 		@Override
@@ -109,4 +110,11 @@ public class MainLoop extends Subsystem implements ActionRequest.Listener {
 			disp().switchFullscreen();
 		}
 	};
+	
+	
+	@Override
+	public void queueTask(Runnable request)
+	{
+		taskQueue.add(request);
+	}
 }

src/mightypork/rogue/Res.java

@@ -1,13 +1,11 @@
 package mightypork.rogue;
 
 
-import mightypork.rogue.audio.EffectPlayer;
-import mightypork.rogue.audio.LoopPlayer;
-import mightypork.rogue.audio.SoundBank;
-import mightypork.rogue.gui.screens.screenBouncy.ScreenTestAnim;
-import mightypork.rogue.gui.screens.screenTextures.ScreenTextureTest;
-import mightypork.rogue.render.textures.TextureBank;
-import mightypork.rogue.render.textures.TxQuad;
+import mightypork.rogue.sound.SoundBank;
+import mightypork.rogue.sound.players.EffectPlayer;
+import mightypork.rogue.sound.players.LoopPlayer;
+import mightypork.rogue.texture.TextureBank;
+import mightypork.rogue.texture.TxQuad;
 
 import org.newdawn.slick.opengl.Texture;
 
@@ -27,26 +25,25 @@ public class Res {
 		textures = new TextureBank(app);
 		sounds = new SoundBank(app);
 		
-		loadSounds(app);
-		loadTextures(app);
-		loadFonts(app);
-		loadScreens(app);
+		loadSounds();
+		loadTextures();
+		loadFonts();
 	}
 	
 	
-	private static void loadFonts(App app)
+	private static void loadFonts()
 	{
-		
+		//
 	}
 	
 	
-	private static void loadTextures(App app)
+	private static void loadTextures()
 	{
 		textures.loadTexture("test.kitten", "/res/img/kitten.png");
 	}
 	
 	
-	private static void loadSounds(App app)
+	private static void loadSounds()
 	{
 		sounds.addEffect("gui.shutter", "/res/audio/shutter.ogg", 1, 1);
 		
@@ -54,13 +51,6 @@ public class Res {
 	}
 	
 	
-	private static void loadScreens(App app)
-	{
-		app.screens.add("test.anim", new ScreenTestAnim(app));
-		app.screens.add("test.texture", new ScreenTextureTest(app));
-	}
-	
-	
 	public static TxQuad getTxQuad(String key)
 	{
 		return textures.getTxQuad(key);

src/mightypork/rogue/bus/ChildClient.java

@@ -25,7 +25,7 @@ public class ChildClient extends AppAdapter implements DelegatingClient, Togglea
 		super(app);
 	}
 	
-	private Set<Object> clients = new LinkedHashSet<Object>();
+	private final Set<Object> clients = new LinkedHashSet<Object>();
 	private boolean listening = true;
 	private boolean delegating = true;
 	

src/mightypork/rogue/bus/events/ActionRequest.java

@@ -2,16 +2,17 @@ package mightypork.rogue.bus.events;
 
 
 import mightypork.utils.control.bus.Event;
+import mightypork.utils.control.bus.SingularEvent;
 
 
 /**
- * Request for action that should be performed in the main thread.
+ * Request for a global sction to be done in the main loop.
  * 
  * @author MightyPork
  */
-public class ActionRequest implements Event<ActionRequest.Listener> {
+public class ActionRequest implements Event<ActionRequest.Listener>, SingularEvent {
 	
-	private RequestType type;
+	private final RequestType type;
 	
 	
 	public ActionRequest(RequestType request) {
@@ -27,7 +28,16 @@ public class ActionRequest implements Event<ActionRequest.Listener> {
 	
 	public interface Listener {
 		
+		/**
+		 * Perform the requested action
+		 * 
+		 * @param request
+		 */
 		public void requestAction(RequestType request);
 	}
 	
+	public static enum RequestType
+	{
+		FULLSCREEN, SCREENSHOT, SHUTDOWN;
+	}
 }

src/mightypork/rogue/bus/events/KeyboardEvent.java

@@ -13,9 +13,9 @@ import org.lwjgl.input.Keyboard;
  */
 public class KeyboardEvent implements Event<KeyboardEvent.Listener> {
 	
-	private int key;
-	private boolean down;
-	private char c;
+	private final int key;
+	private final boolean down;
+	private final char c;
 	
 	
 	public KeyboardEvent(int key, char c, boolean down) {

src/mightypork/rogue/bus/events/MainLoopTaskRequest.java

@@ -0,0 +1,38 @@
+package mightypork.rogue.bus.events;
+
+
+import mightypork.utils.control.bus.Event;
+import mightypork.utils.control.bus.SingularEvent;
+
+
+/**
+ * Request to execute given {@link Runnable} in main loop.
+ * 
+ * @author MightyPork
+ */
+public class MainLoopTaskRequest implements Event<MainLoopTaskRequest.Listener>, SingularEvent {
+	
+	private final Runnable task;
+	
+	
+	public MainLoopTaskRequest(Runnable task) {
+		this.task = task;
+	}
+	
+	
+	@Override
+	public void handleBy(Listener handler)
+	{
+		handler.queueTask(task);
+	}
+	
+	public interface Listener {
+		
+		/**
+		 * Perform the requested action
+		 * 
+		 * @param request
+		 */
+		public void queueTask(Runnable request);
+	}
+}

src/mightypork/rogue/bus/events/MouseButtonEvent.java

@@ -16,10 +16,10 @@ public class MouseButtonEvent implements Event<MouseButtonEvent.Listener> {
 	public static final int BUTTON_MIDDLE = 1;
 	public static final int BUTTON_RIGHT = 2;
 	
-	private int button;
-	private int wheeld;
-	private Coord pos;
-	private boolean down;
+	private final int button;
+	private final int wheeld;
+	private final Coord pos;
+	private final boolean down;
 	
 	
 	/**

src/mightypork/rogue/bus/events/MouseMotionEvent.java

@@ -7,8 +7,8 @@ import mightypork.utils.math.coord.Coord;
 
 public class MouseMotionEvent implements Event<MouseMotionEvent.Listener> {
 	
-	private Coord move;
-	private Coord pos;
+	private final Coord move;
+	private final Coord pos;
 	
 	
 	public MouseMotionEvent(Coord pos, Coord move) {

src/mightypork/rogue/bus/events/RequestType.java

@@ -1,7 +0,0 @@
-package mightypork.rogue.bus.events;
-
-
-public enum RequestType
-{
-	FULLSCREEN, SCREENSHOT, SHUTDOWN;
-}

src/mightypork/rogue/bus/events/ResourceLoadRequest.java

@@ -0,0 +1,39 @@
+package mightypork.rogue.bus.events;
+
+
+import mightypork.rogue.Deferred;
+import mightypork.utils.control.bus.Event;
+import mightypork.utils.control.bus.SingularEvent;
+
+
+/**
+ * Request to schedule loading a deferred resource.
+ * 
+ * @author MightyPork
+ */
+public class ResourceLoadRequest implements Event<ResourceLoadRequest.Listener>, SingularEvent {
+	
+	private final Deferred resource;
+	
+	
+	public ResourceLoadRequest(Deferred resource) {
+		this.resource = resource;
+	}
+	
+	
+	@Override
+	public void handleBy(Listener handler)
+	{
+		handler.loadResource(resource);
+	}
+	
+	public interface Listener {
+		
+		/**
+		 * Load a resource
+		 * 
+		 * @param resource
+		 */
+		public void loadResource(Deferred resource);
+	}
+}

src/mightypork/rogue/bus/events/ScreenChangeEvent.java

@@ -7,9 +7,9 @@ import mightypork.utils.math.coord.Coord;
 
 public class ScreenChangeEvent implements Event<ScreenChangeEvent.Listener> {
 	
-	private boolean fullscreen;
-	private Coord screenSize;
-	private boolean fsChanged;
+	private final boolean fullscreen;
+	private final Coord screenSize;
+	private final boolean fsChanged;
 	
 	
 	public ScreenChangeEvent(boolean fsChanged, boolean fullscreen, Coord size) {

src/mightypork/rogue/bus/events/ScreenRequestEvent.java

@@ -2,11 +2,12 @@ package mightypork.rogue.bus.events;
 
 
 import mightypork.utils.control.bus.Event;
+import mightypork.utils.control.bus.SingularEvent;
 
 
-public class ScreenRequestEvent implements Event<ScreenRequestEvent.Listener> {
+public class ScreenRequestEvent implements Event<ScreenRequestEvent.Listener>, SingularEvent {
 	
-	private String scrName;
+	private final String scrName;
 	
 	
 	public ScreenRequestEvent(String screenKey) {

src/mightypork/rogue/gui/LayeredScreen.java

@@ -1,15 +1,15 @@
-package mightypork.rogue.gui.screens;
+package mightypork.rogue.gui;
 
 
+import java.util.Collection;
 import java.util.LinkedList;
 
 import mightypork.rogue.AppAccess;
-import mightypork.utils.control.interf.Updateable;
 
 
 public abstract class LayeredScreen extends Screen {
 	
-	private final LinkedList<ScreenLayer> layers = new LinkedList<ScreenLayer>();
+	private final Collection<ScreenLayer> layers = new LinkedList<ScreenLayer>();
 	
 	
 	public LayeredScreen(AppAccess app) {
@@ -17,18 +17,6 @@ public abstract class LayeredScreen extends Screen {
 	}
 	
 	
-	@Override
-	protected abstract void deinitScreen();
-	
-	
-	@Override
-	protected abstract void onScreenEnter();
-	
-	
-	@Override
-	protected abstract void onScreenLeave();
-	
-	
 	@Override
 	protected final void renderScreen()
 	{
@@ -38,14 +26,6 @@ public abstract class LayeredScreen extends Screen {
 	}
 	
 	
-	/**
-	 * Update screen. Layers should implement {@link Updateable} to receive
-	 * updates directly from bus.
-	 */
-	@Override
-	protected abstract void updateScreen(double delta);
-	
-	
 	/**
 	 * Add a layer to the screen.
 	 * 

src/mightypork/rogue/gui/Screen.java

@@ -1,4 +1,4 @@
-package mightypork.rogue.gui.screens;
+package mightypork.rogue.gui;
 
 
 import static org.lwjgl.opengl.GL11.*;
@@ -10,20 +10,17 @@ import mightypork.rogue.input.KeyBindingPool;
 import mightypork.rogue.input.KeyStroke;
 import mightypork.rogue.render.Render;
 import mightypork.utils.control.interf.Destroyable;
-import mightypork.utils.control.interf.Updateable;
 import mightypork.utils.math.constraints.ConstraintContext;
 import mightypork.utils.math.coord.Coord;
 import mightypork.utils.math.coord.Rect;
 
 
 /**
- * Screen class.<br>
- * Screen animates 3D world, while contained panels render 2D overlays, process
- * inputs and run the game logic.
+ * Screen class.
  * 
  * @author MightyPork
  */
-public abstract class Screen extends ChildClient implements Destroyable, Updateable, KeyBinder, ConstraintContext, ScreenChangeEvent.Listener {
+public abstract class Screen extends ChildClient implements Destroyable, KeyBinder, ConstraintContext, ScreenChangeEvent.Listener {
 	
 	private final KeyBindingPool keybindings = new KeyBindingPool();
 	
@@ -127,14 +124,6 @@ public abstract class Screen extends ChildClient implements Destroyable, Updatea
 	protected abstract void renderScreen();
 	
 	
-	/**
-	 * Update animations and timing.<br>
-	 * 
-	 * @param delta time elapsed
-	 */
-	protected abstract void updateScreen(double delta);
-	
-	
 	/**
 	 * Render screen
 	 */
@@ -173,16 +162,6 @@ public abstract class Screen extends ChildClient implements Destroyable, Updatea
 	}
 	
 	
-	/**
-	 * Update and render the screen
-	 */
-	@Override
-	public final void update(double delta)
-	{
-		updateScreen(delta);
-	}
-	
-	
 	@Override
 	public final Rect getRect()
 	{
@@ -241,4 +220,6 @@ public abstract class Screen extends ChildClient implements Destroyable, Updatea
 		glMatrixMode(GL_MODELVIEW);
 	}
 	
+	
+	public abstract String getId();
 }

src/mightypork/rogue/gui/ScreenLayer.java

@@ -1,9 +1,11 @@
-package mightypork.rogue.gui.screens;
+package mightypork.rogue.gui;
 
 
 import mightypork.rogue.bus.ChildClient;
 import mightypork.rogue.gui.constraints.Renderable;
-import mightypork.utils.control.interf.Updateable;
+import mightypork.rogue.input.KeyBinder;
+import mightypork.rogue.input.KeyBindingPool;
+import mightypork.rogue.input.KeyStroke;
 import mightypork.utils.math.constraints.ConstraintContext;
 import mightypork.utils.math.coord.Rect;
 
@@ -13,24 +15,33 @@ import mightypork.utils.math.coord.Rect;
  * 
  * @author MightyPork
  */
-public abstract class ScreenLayer extends ChildClient implements Renderable, Updateable, ConstraintContext {
+public abstract class ScreenLayer extends ChildClient implements Renderable, ConstraintContext, KeyBinder {
 	
-	private Screen screen;
+	private final Screen screen;
+	
+	private final KeyBindingPool keybindings = new KeyBindingPool();
 	
 	
 	public ScreenLayer(Screen screen) {
 		super(screen); // screen as AppAccess
 		
 		this.screen = screen;
+		addChildClient(keybindings);
 	}
 	
 	
 	@Override
-	public abstract void render();
+	public final void bindKeyStroke(KeyStroke stroke, Runnable task)
+	{
+		keybindings.bindKeyStroke(stroke, task);
+	}
 	
 	
 	@Override
-	public abstract void update(double delta);
+	public final void unbindKeyStroke(KeyStroke stroke)
+	{
+		keybindings.unbindKeyStroke(stroke);
+	}
 	
 	
 	protected Screen screen()

src/mightypork/rogue/gui/ScreenRegistry.java

@@ -1,4 +1,4 @@
-package mightypork.rogue.gui.screens;
+package mightypork.rogue.gui;
 
 
 import java.util.HashMap;
@@ -6,11 +6,12 @@ import java.util.HashMap;
 import mightypork.rogue.AppAccess;
 import mightypork.rogue.bus.Subsystem;
 import mightypork.rogue.bus.events.ScreenRequestEvent;
+import mightypork.utils.logging.Log;
 
 
 public class ScreenRegistry extends Subsystem implements ScreenRequestEvent.Listener {
 	
-	private HashMap<String, Screen> screens = new HashMap<String, Screen>();
+	private final HashMap<String, Screen> screens = new HashMap<String, Screen>();
 	private Screen active = null;
 	
 	
@@ -19,9 +20,9 @@ public class ScreenRegistry extends Subsystem implements ScreenRequestEvent.List
 	}
 	
 	
-	public void add(String key, Screen screen)
+	public void add(Screen screen)
 	{
-		screens.put(key, screen);
+		screens.put(screen.getId(), screen);
 		addChildClient(screen);
 	}
 	
@@ -29,6 +30,8 @@ public class ScreenRegistry extends Subsystem implements ScreenRequestEvent.List
 	@Override
 	public void showScreen(String key)
 	{
+		Log.f3("Request to show screen \"" + key + "\"");
+		
 		Screen toshow = screens.get(key);
 		if (toshow == null) throw new RuntimeException("Screen " + key + " not defined.");
 		

src/mightypork/rogue/gui/constraints/ColumnHolder.java

@@ -0,0 +1,45 @@
+package mightypork.rogue.gui.constraints;
+
+
+import static mightypork.utils.math.constraints.ConstraintFactory.*;
+import mightypork.rogue.AppAccess;
+import mightypork.utils.math.constraints.ConstraintContext;
+
+
+public class ColumnHolder extends ElementHolder {
+	
+	private final int cols;
+	private int col = 0;
+	
+	
+	public ColumnHolder(AppAccess app, ConstraintContext context, int rows) {
+		super(app, context);
+		this.cols = rows;
+	}
+	
+	
+	public ColumnHolder(AppAccess app, int rows) {
+		super(app);
+		this.cols = rows;
+	}
+	
+	
+	/**
+	 * Add a row to the holder.
+	 * 
+	 * @param elem
+	 */
+	public void addRow(RenderableWithContext elem)
+	{
+		if (elem == null) return;
+		add(elem, c_column(null, cols, col++));
+	}
+	
+	
+	@Override
+	public void remove(RenderableWithContext elem)
+	{
+		throw new UnsupportedOperationException("Can't remove from ColumnHolder.");
+	}
+	
+}

src/mightypork/rogue/gui/constraints/ElementHolder.java

@@ -19,7 +19,7 @@ import mightypork.utils.math.coord.Rect;
  */
 public class ElementHolder extends ChildClient implements ConstraintContext, RenderableWithContext {
 	
-	private LinkedList<RenderableWithContext> elements = new LinkedList<RenderableWithContext>();
+	private final LinkedList<RenderableWithContext> elements = new LinkedList<RenderableWithContext>();
 	private ConstraintContext context;
 	
 	
@@ -57,19 +57,18 @@ public class ElementHolder extends ChildClient implements ConstraintContext, Ren
 	}
 	
 	
-	/**
-	 * Add element to the holder.
-	 * 
-	 * @param elem
-	 */
-	public void add(RenderableWithContext elem)
-	{
-		if (elem == null) return;
-		elem.setContext(this);
-		elements.add(elem);
-		addChildClient(elem);
-	}
-	
+//	/**
+//	 * Add element to the holder.
+//	 * 
+//	 * @param elem
+//	 */
+//	public void add(RenderableWithContext elem)
+//	{
+//		if (elem == null) return;
+//		elem.setContext(this);
+//		elements.add(elem);
+//		addChildClient(elem);
+//	}
 	
 	/**
 	 * Add element to the holder.

src/mightypork/rogue/gui/constraints/RowHolder.java

@@ -0,0 +1,45 @@
+package mightypork.rogue.gui.constraints;
+
+
+import static mightypork.utils.math.constraints.ConstraintFactory.*;
+import mightypork.rogue.AppAccess;
+import mightypork.utils.math.constraints.ConstraintContext;
+
+
+public class RowHolder extends ElementHolder {
+	
+	private final int rows;
+	private int row = 0;
+	
+	
+	public RowHolder(AppAccess app, ConstraintContext context, int rows) {
+		super(app, context);
+		this.rows = rows;
+	}
+	
+	
+	public RowHolder(AppAccess app, int rows) {
+		super(app);
+		this.rows = rows;
+	}
+	
+	
+	/**
+	 * Add a row to the holder.
+	 * 
+	 * @param elem
+	 */
+	public void addRow(RenderableWithContext elem)
+	{
+		if (elem == null) return;
+		add(elem, c_row(null, rows, row++));
+	}
+	
+	
+	@Override
+	public void remove(RenderableWithContext elem)
+	{
+		throw new UnsupportedOperationException("Can't remove from RowHolder.");
+	}
+	
+}

src/mightypork/rogue/gui/screens/screenBouncy/ScreenTestAnim.java

@@ -1,70 +0,0 @@
-package mightypork.rogue.gui.screens.screenBouncy;
-
-
-import mightypork.rogue.AppAccess;
-import mightypork.rogue.gui.screens.LayeredScreen;
-import mightypork.rogue.input.KeyStroke;
-
-import org.lwjgl.input.Keyboard;
-
-
-public class ScreenTestAnim extends LayeredScreen {
-	
-	private LayerBouncyBoxes layer;
-	
-	
-	public ScreenTestAnim(AppAccess app) {
-		super(app);
-		
-		layer = new LayerBouncyBoxes(this);
-		
-		addLayer(layer);
-		
-		bindKeyStroke(new KeyStroke(Keyboard.KEY_RIGHT), new Runnable() {
-			
-			@Override
-			public void run()
-			{
-				layer.goRight();
-			}
-		});
-		
-		bindKeyStroke(new KeyStroke(Keyboard.KEY_LEFT), new Runnable() {
-			
-			@Override
-			public void run()
-			{
-				layer.goLeft();
-			}
-		});
-	}
-	
-	
-	@Override
-	protected void deinitScreen()
-	{
-		// no impl
-	}
-	
-	
-	@Override
-	protected void onScreenEnter()
-	{
-		// no impl
-	}
-	
-	
-	@Override
-	protected void onScreenLeave()
-	{
-		// no impl
-	}
-	
-	
-	@Override
-	protected void updateScreen(double delta)
-	{
-		// no impl
-	}
-	
-}

src/mightypork/rogue/gui/screens/test_bouncyboxes/BouncyBox.java

@@ -1,4 +1,4 @@
-package mightypork.rogue.gui.screens.screenBouncy;
+package mightypork.rogue.gui.screens.test_bouncyboxes;
 
 
 import static mightypork.utils.math.constraints.ConstraintFactory.*;

src/mightypork/rogue/gui/screens/test_bouncyboxes/LayerBouncyBoxes.java

@@ -1,4 +1,4 @@
-package mightypork.rogue.gui.screens.screenBouncy;
+package mightypork.rogue.gui.screens.test_bouncyboxes;
 
 
 import static mightypork.utils.math.constraints.ConstraintFactory.*;
@@ -6,29 +6,29 @@ import static mightypork.utils.math.constraints.ConstraintFactory.*;
 import java.util.ArrayList;
 import java.util.List;
 
-import mightypork.rogue.gui.constraints.ElementHolder;
-import mightypork.rogue.gui.screens.Screen;
-import mightypork.rogue.gui.screens.ScreenLayer;
+import mightypork.rogue.gui.Screen;
+import mightypork.rogue.gui.ScreenLayer;
+import mightypork.rogue.gui.constraints.RowHolder;
 import mightypork.utils.math.constraints.RectConstraint;
 
 
 public class LayerBouncyBoxes extends ScreenLayer {
 	
 	List<BouncyBox> boxes = new ArrayList<BouncyBox>();
-	private ElementHolder layout;
+	private RowHolder layout;
 	
 	
 	public LayerBouncyBoxes(Screen screen) {
 		super(screen);
 		
+		// shrink screen rect by 8% on all sides
 		RectConstraint holder_rect = c_shrink(this, c_percent(c_height(this), c_n(8)));
 		
-		layout = new ElementHolder(screen, holder_rect);
-		addChildClient(layout);
+		addChildClient(layout = new RowHolder(screen, holder_rect, 16));
 		
-		for (int i = 0; i < 32; i++) {
+		for (int i = 0; i < 16; i++) {
 			BouncyBox bbr = new BouncyBox();
-			layout.add(bbr, c_row(null, 32, i));
+			layout.addRow(bbr);
 			boxes.add(bbr);
 		}
 		
@@ -42,13 +42,6 @@ public class LayerBouncyBoxes extends ScreenLayer {
 	}
 	
 	
-	@Override
-	public void update(double delta)
-	{
-		// no impl
-	}
-	
-	
 	public void goLeft()
 	{
 		for (BouncyBox bbr : boxes) {

src/mightypork/rogue/gui/screens/test_bouncyboxes/ScreenTestBouncy.java

@@ -0,0 +1,80 @@
+package mightypork.rogue.gui.screens.test_bouncyboxes;
+
+
+import mightypork.rogue.AppAccess;
+import mightypork.rogue.bus.events.ScreenRequestEvent;
+import mightypork.rogue.gui.LayeredScreen;
+import mightypork.rogue.input.KeyStroke;
+
+import org.lwjgl.input.Keyboard;
+
+
+public class ScreenTestBouncy extends LayeredScreen {
+	
+	private LayerBouncyBoxes layer;
+	
+	
+	public ScreenTestBouncy(AppAccess app) {
+		super(app);
+		
+		layer = new LayerBouncyBoxes(this);
+		
+		addLayer(layer);
+		
+		bindKeyStroke(new KeyStroke(true, Keyboard.KEY_RIGHT), new Runnable() {
+			
+			@Override
+			public void run()
+			{
+				layer.goRight();
+			}
+		});
+		
+		bindKeyStroke(new KeyStroke(true, Keyboard.KEY_LEFT), new Runnable() {
+			
+			@Override
+			public void run()
+			{
+				layer.goLeft();
+			}
+		});
+		
+		bindKeyStroke(new KeyStroke(Keyboard.KEY_C), new Runnable() {
+			
+			@Override
+			public void run()
+			{
+				bus().queue(new ScreenRequestEvent("test.cat"));
+			}
+		});
+	}
+	
+	
+	@Override
+	protected void deinitScreen()
+	{
+		// no impl
+	}
+	
+	
+	@Override
+	protected void onScreenEnter()
+	{
+		// no impl
+	}
+	
+	
+	@Override
+	protected void onScreenLeave()
+	{
+		// no impl
+	}
+	
+	
+	@Override
+	public String getId()
+	{
+		return "test.bouncy";
+	}
+	
+}

src/mightypork/rogue/gui/screens/test_cat_sound/LayerFlyingCat.java

@@ -1,27 +1,27 @@
-package mightypork.rogue.gui.screens.screenTextures;
+package mightypork.rogue.gui.screens.test_cat_sound;
 
 
 import static mightypork.utils.math.constraints.ConstraintFactory.*;
 
 import java.util.Random;
 
-import mightypork.rogue.AppAccess;
 import mightypork.rogue.Res;
-import mightypork.rogue.bus.events.ActionRequest;
 import mightypork.rogue.bus.events.MouseButtonEvent;
-import mightypork.rogue.bus.events.RequestType;
-import mightypork.rogue.gui.screens.Screen;
+import mightypork.rogue.gui.Screen;
+import mightypork.rogue.gui.ScreenLayer;
 import mightypork.rogue.input.KeyStroke;
 import mightypork.rogue.render.Render;
+import mightypork.utils.control.interf.Updateable;
 import mightypork.utils.math.animation.AnimDouble;
 import mightypork.utils.math.animation.Easing;
 import mightypork.utils.math.constraints.RectConstraint;
 import mightypork.utils.math.coord.Coord;
 
 import org.lwjgl.input.Keyboard;
+import org.newdawn.slick.opengl.Texture;
 
 
-public class ScreenTextureTest extends Screen implements MouseButtonEvent.Listener {
+public class LayerFlyingCat extends ScreenLayer implements Updateable, MouseButtonEvent.Listener {
 	
 	private RectConstraint kittenbox;
 	
@@ -31,53 +31,28 @@ public class ScreenTextureTest extends Screen implements MouseButtonEvent.Listen
 	
 	private Random rand = new Random();
 	
+	private Texture cat_tx = Res.getTexture("test.kitten");
 	
-	public ScreenTextureTest(AppAccess app) {
-		super(app);
+	
+	public LayerFlyingCat(Screen screen) {
+		super(screen);
 		
 		kittenbox = c_move(c_box_sized(this, c_n(s), c_n(s)), c_n(x), c_n(y));
 		
-		bindKeyStroke(new KeyStroke(Keyboard.KEY_ESCAPE), new Runnable() {
+		bindKeyStroke(new KeyStroke(Keyboard.KEY_RETURN), new Runnable() {
 			
 			@Override
 			public void run()
 			{
-				snd().fadeOutAllLoops();
-				bus().schedule(new ActionRequest(RequestType.SHUTDOWN), 3);
+				x.fadeTo(disp().getWidth() / 2 - s.getTo() / 2, 2);
+				y.fadeTo(disp().getHeight() / 2 - s.getTo() / 2, 2);
 			}
 		});
 	}
 	
 	
 	@Override
-	protected void deinitScreen()
-	{
-	}
-	
-	
-	@Override
-	protected void onScreenEnter()
-	{
-		System.out.println("YOLO");
-		Res.getLoop("test.wilderness").fadeIn();
-	}
-	
-	
-	@Override
-	protected void onScreenLeave()
-	{
-	}
-	
-	
-	@Override
-	protected void renderScreen()
-	{
-		Render.quadTextured(kittenbox.getRect(), Res.getTexture("test.kitten"));
-	}
-	
-	
-	@Override
-	protected void updateScreen(double delta)
+	public void update(double delta)
 	{
 		s.update(delta);
 		x.update(delta);
@@ -101,4 +76,11 @@ public class ScreenTextureTest extends Screen implements MouseButtonEvent.Listen
 		y.fadeTo(pos.y - newSize / 2D, t);
 	}
 	
+	
+	@Override
+	public void render()
+	{
+		Render.quadTextured(kittenbox.getRect(), cat_tx);
+	}
+	
 }

src/mightypork/rogue/gui/screens/test_cat_sound/ScreenTestCat.java

@@ -0,0 +1,73 @@
+package mightypork.rogue.gui.screens.test_cat_sound;
+
+
+import mightypork.rogue.AppAccess;
+import mightypork.rogue.Res;
+import mightypork.rogue.bus.events.ActionRequest;
+import mightypork.rogue.bus.events.ActionRequest.RequestType;
+import mightypork.rogue.bus.events.ScreenRequestEvent;
+import mightypork.rogue.gui.LayeredScreen;
+import mightypork.rogue.input.KeyStroke;
+
+import org.lwjgl.input.Keyboard;
+
+
+public class ScreenTestCat extends LayeredScreen {
+	
+	LayerFlyingCat layer;
+	
+	
+	public ScreenTestCat(AppAccess app) {
+		super(app);
+		
+		addLayer(layer = new LayerFlyingCat(this));
+		
+		bindKeyStroke(new KeyStroke(Keyboard.KEY_ESCAPE), new Runnable() {
+			
+			@Override
+			public void run()
+			{
+				snd().fadeOutAllLoops();
+				bus().schedule(new ActionRequest(RequestType.SHUTDOWN), 3);
+			}
+		});
+		
+		bindKeyStroke(new KeyStroke(Keyboard.KEY_B), new Runnable() {
+			
+			@Override
+			public void run()
+			{
+				bus().queue(new ScreenRequestEvent("test.bouncy"));
+			}
+		});
+	}
+	
+	
+	@Override
+	protected void deinitScreen()
+	{
+	}
+	
+	
+	@Override
+	protected void onScreenEnter()
+	{
+		snd().fadeOutAllLoops();
+		Res.getLoop("test.wilderness").fadeIn();
+	}
+	
+	
+	@Override
+	protected void onScreenLeave()
+	{
+		Res.getLoop("test.wilderness").fadeOut();
+	}
+	
+	
+	@Override
+	public String getId()
+	{
+		return "test.cat";
+	}
+	
+}

src/mightypork/rogue/input/InputSystem.java

@@ -4,10 +4,10 @@ package mightypork.rogue.input;
 import mightypork.rogue.AppAccess;
 import mightypork.rogue.bus.Subsystem;
 import mightypork.rogue.bus.events.ActionRequest;
+import mightypork.rogue.bus.events.ActionRequest.RequestType;
 import mightypork.rogue.bus.events.KeyboardEvent;
 import mightypork.rogue.bus.events.MouseButtonEvent;
 import mightypork.rogue.bus.events.MouseMotionEvent;
-import mightypork.rogue.bus.events.RequestType;
 import mightypork.utils.control.interf.Updateable;
 import mightypork.utils.math.coord.Coord;
 
@@ -20,7 +20,7 @@ import org.lwjgl.opengl.Display;
 public class InputSystem extends Subsystem implements Updateable, KeyBinder {
 	
 	// listeners
-	private KeyBindingPool keybindings;
+	private final KeyBindingPool keybindings;
 	private boolean yAxisDown = true;
 	
 	
@@ -127,6 +127,7 @@ public class InputSystem extends Subsystem implements Updateable, KeyBinder {
 		int key = Keyboard.getEventKey();
 		boolean down = Keyboard.getEventKeyState();
 		char c = Keyboard.getEventCharacter();
+		
 		bus().queue(new KeyboardEvent(key, c, down));
 	}
 	
@@ -137,4 +138,16 @@ public class InputSystem extends Subsystem implements Updateable, KeyBinder {
 			c.setY_ip(disp().getSize().y - c.y);
 		}
 	}
+	
+	
+	/**
+	 * Set whether Y axis should go top-down instead of LWJGL default bottom-up.<br>
+	 * Default = true.
+	 * 
+	 * @param yAxisDown
+	 */
+	public void setYDown(boolean yAxisDown)
+	{
+		this.yAxisDown = yAxisDown;
+	}
 }

src/mightypork/rogue/input/KeyBinding.java

@@ -6,7 +6,7 @@ import mightypork.rogue.bus.events.KeyboardEvent;
 
 public class KeyBinding implements KeyboardEvent.Listener {
 	
-	private KeyStroke keystroke;
+	private final KeyStroke keystroke;
 	private Runnable handler;
 	private boolean wasActive = false;
 	

src/mightypork/rogue/input/KeyBindingPool.java

@@ -16,7 +16,7 @@ import mightypork.utils.logging.Log;
  */
 public class KeyBindingPool implements KeyBinder, KeyboardEvent.Listener {
 	
-	private Set<KeyBinding> bindings = new HashSet<KeyBinding>();
+	private final Set<KeyBinding> bindings = new HashSet<KeyBinding>();
 	
 	
 	/**

src/mightypork/rogue/input/KeyStroke.java

@@ -10,18 +10,18 @@ import org.lwjgl.input.Keyboard;
 
 public class KeyStroke {
 	
-	private Set<Integer> keys = new LinkedHashSet<Integer>();
-	private boolean down = true;
+	private final Set<Integer> keys = new LinkedHashSet<Integer>();
+	private final boolean fallingEdge;
 	
 	
 	/**
 	 * KeyStroke
 	 * 
-	 * @param down true for falling edge, up for rising edge
+	 * @param fallingEdge true for falling edge, up for rising edge
 	 * @param keys keys that must be pressed
 	 */
-	public KeyStroke(boolean down, int... keys) {
-		this.down = down;
+	public KeyStroke(boolean fallingEdge, int... keys) {
+		this.fallingEdge = fallingEdge;
 		for (int k : keys) {
 			this.keys.add(k);
 		}
@@ -29,11 +29,12 @@ public class KeyStroke {
 	
 	
 	/**
-	 * Falling edge keystroke
+	 * Rising edge keystroke
 	 * 
 	 * @param keys
 	 */
 	public KeyStroke(int... keys) {
+		fallingEdge = false;
 		for (int k : keys) {
 			this.keys.add(k);
 		}
@@ -47,13 +48,7 @@ public class KeyStroke {
 			st &= Keyboard.isKeyDown(k);
 		}
 		
-		return down ? st : !st;
-	}
-	
-	
-	public void setKeys(Set<Integer> keys)
-	{
-		this.keys = keys;
+		return fallingEdge ? st : !st;
 	}
 	
 	
@@ -81,7 +76,7 @@ public class KeyStroke {
 			return false;
 		}
 		
-		if (down != other.down) return false;
+		if (fallingEdge != other.fallingEdge) return false;
 		
 		return true;
 	}
@@ -99,7 +94,7 @@ public class KeyStroke {
 			s += Keyboard.getKeyName(i.next());
 		}
 		
-		s += down ? ",DOWN" : "UP";
+		s += fallingEdge ? ",DOWN" : ",UP";
 		
 		s += ")";
 		

src/mightypork/rogue/render/DisplaySystem.java

@@ -140,7 +140,19 @@ public class DisplaySystem extends Subsystem implements ConstraintContext {
 	 */
 	public Coord getSize()
 	{
-		return new Coord(Display.getWidth(), Display.getHeight());
+		return new Coord(getWidth(), getHeight());
+	}
+	
+	
+	public int getWidth()
+	{
+		return Display.getWidth();
+	}
+	
+	
+	public int getHeight()
+	{
+		return Display.getHeight();
 	}
 	
 	

src/mightypork/rogue/render/Render.java

@@ -5,7 +5,7 @@ import static org.lwjgl.opengl.GL11.*;
 
 import java.io.IOException;
 
-import mightypork.rogue.render.textures.TxQuad;
+import mightypork.rogue.texture.TxQuad;
 import mightypork.utils.files.FileUtils;
 import mightypork.utils.logging.Log;
 import mightypork.utils.math.color.RGB;
@@ -110,14 +110,16 @@ public class Render {
 	 * @param resourcePath
 	 * @return the loaded texture
 	 */
-	public static Texture loadTexture(String resourcePath)
+	public synchronized static Texture loadTexture(String resourcePath)
 	{
+		
 		if (!inited) {
+			inited = true;
+			
 			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
 			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
-			inited = true;
 		}
 		
 		try {
@@ -187,7 +189,7 @@ public class Render {
 	{
 		double left = quad.xMin();
 		double bottom = quad.yMin();
-		double right = quad.yMax();
+		double right = quad.xMax();
 		double top = quad.yMax();
 		
 		// draw with color

src/mightypork/rogue/sound/DeferredAudio.java

@@ -1,4 +1,4 @@
-package mightypork.rogue.audio;
+package mightypork.rogue.sound;
 
 
 import mightypork.rogue.Deferred;
@@ -90,14 +90,14 @@ public class DeferredAudio implements Destroyable, Deferred {
 	 * @return resource is loaded
 	 */
 	@Override
-	public boolean isLoaded()
+	public synchronized boolean isLoaded()
 	{
 		return audio != null;
 	}
 	
 	
 	@Override
-	public void load()
+	public synchronized void load()
 	{
 		ensureLoaded();
 	}
@@ -108,7 +108,7 @@ public class DeferredAudio implements Destroyable, Deferred {
 	 * 
 	 * @return is loaded
 	 */
-	protected boolean ensureLoaded()
+	protected synchronized boolean ensureLoaded()
 	{
 		if (isLoaded()) return true; // already loaded
 		if (loadFailed || resourcePath == null) return false;
@@ -295,4 +295,11 @@ public class DeferredAudio implements Destroyable, Deferred {
 		return true;
 	}
 	
+	
+	@Override
+	public String toString()
+	{
+		return "Audio(\"" + resourcePath + "\")";
+	}
+	
 }

src/mightypork/rogue/sound/JointVolume.java

@@ -1,4 +1,4 @@
-package mightypork.rogue.audio;
+package mightypork.rogue.sound;
 
 
 import mightypork.utils.math.Calc;
@@ -12,7 +12,7 @@ import mightypork.utils.objects.Mutable;
  */
 public class JointVolume extends Mutable<Double> {
 	
-	private Mutable<Double>[] volumes;
+	private final Mutable<Double>[] volumes;
 	
 	
 	/**

src/mightypork/rogue/sound/NullAudio.java

@@ -1,4 +1,4 @@
-package mightypork.rogue.audio;
+package mightypork.rogue.sound;
 
 
 public class NullAudio extends DeferredAudio {

src/mightypork/rogue/sound/SoundBank.java

@@ -1,4 +1,4 @@
-package mightypork.rogue.audio;
+package mightypork.rogue.sound;
 
 
 import java.util.HashMap;
@@ -6,6 +6,8 @@ import java.util.Map;
 
 import mightypork.rogue.AppAccess;
 import mightypork.rogue.AppAdapter;
+import mightypork.rogue.sound.players.EffectPlayer;
+import mightypork.rogue.sound.players.LoopPlayer;
 import mightypork.utils.logging.Log;
 
 
@@ -15,8 +17,8 @@ public class SoundBank extends AppAdapter {
 	private static final LoopPlayer NULL_LOOP = new LoopPlayer(NO_SOUND, 0, 0, null);
 	private static final EffectPlayer NULL_EFFECT = new EffectPlayer(NO_SOUND, 0, 0, null);
 	
-	private Map<String, EffectPlayer> effects = new HashMap<String, EffectPlayer>();
-	private Map<String, LoopPlayer> loops = new HashMap<String, LoopPlayer>();
+	private final Map<String, EffectPlayer> effects = new HashMap<String, EffectPlayer>();
+	private final Map<String, LoopPlayer> loops = new HashMap<String, LoopPlayer>();
 	
 	
 	public SoundBank(AppAccess app) {

src/mightypork/rogue/sound/SoundSystem.java

@@ -1,4 +1,4 @@
-package mightypork.rogue.audio;
+package mightypork.rogue.sound;
 
 
 import java.nio.FloatBuffer;
@@ -7,6 +7,9 @@ import java.util.Set;
 
 import mightypork.rogue.AppAccess;
 import mightypork.rogue.bus.Subsystem;
+import mightypork.rogue.bus.events.ResourceLoadRequest;
+import mightypork.rogue.sound.players.EffectPlayer;
+import mightypork.rogue.sound.players.LoopPlayer;
 import mightypork.utils.control.interf.Updateable;
 import mightypork.utils.math.Calc.Buffers;
 import mightypork.utils.math.coord.Coord;
@@ -69,12 +72,12 @@ public class SoundSystem extends Subsystem implements Updateable {
 	
 	// -- instance --
 	
-	public Mutable<Double> masterVolume = new Mutable<Double>(1D);
-	public Mutable<Double> effectsVolume = new JointVolume(masterVolume);
-	public Mutable<Double> loopsVolume = new JointVolume(masterVolume);
+	public final Mutable<Double> masterVolume = new Mutable<Double>(1D);
+	public final Mutable<Double> effectsVolume = new JointVolume(masterVolume);
+	public final Mutable<Double> loopsVolume = new JointVolume(masterVolume);
 	
-	private Set<LoopPlayer> loopPlayers = new HashSet<LoopPlayer>();
-	private Set<DeferredAudio> resources = new HashSet<DeferredAudio>();
+	private final Set<LoopPlayer> loopPlayers = new HashSet<LoopPlayer>();
+	private final Set<DeferredAudio> resources = new HashSet<DeferredAudio>();
 	
 	
 	public SoundSystem(AppAccess app) {
@@ -146,6 +149,8 @@ public class SoundSystem extends Subsystem implements Updateable {
 	private DeferredAudio getResource(String res)
 	{
 		DeferredAudio a = new DeferredAudio(res);
+		bus().queue(new ResourceLoadRequest(a));
+		
 		if (resources.contains(a)) throw new IllegalArgumentException("Sound resource " + res + " is already registered.");
 		resources.add(a);
 		return a;

src/mightypork/rogue/sound/players/BaseAudioPlayer.java

@@ -1,22 +1,24 @@
-package mightypork.rogue.audio;
+package mightypork.rogue.sound.players;
 
 
+import mightypork.rogue.sound.DeferredAudio;
+import mightypork.utils.control.interf.Destroyable;
 import mightypork.utils.objects.Mutable;
 
 
-public abstract class BaseAudioPlayer {
+public abstract class BaseAudioPlayer implements Destroyable {
 	
 	/** the track */
-	private DeferredAudio audio;
+	private final DeferredAudio audio;
 	
 	/** base gain for sfx */
-	private double baseGain = 1;
+	private final double baseGain;
 	
 	/** base pitch for sfx */
-	private double basePitch = 1;
+	private final double basePitch;
 	
 	/** dedicated volume control */
-	private Mutable<Double> gainMultiplier = null;
+	private final Mutable<Double> gainMultiplier;
 	
 	
 	public BaseAudioPlayer(DeferredAudio track, double baseGain, Mutable<Double> gainMultiplier) {
@@ -36,10 +38,10 @@ public abstract class BaseAudioPlayer {
 	}
 	
 	
+	@Override
 	public void destroy()
 	{
 		audio.destroy();
-		audio = null;
 	}
 	
 	

src/mightypork/rogue/sound/players/EffectPlayer.java

@@ -1,6 +1,7 @@
-package mightypork.rogue.audio;
+package mightypork.rogue.sound.players;
 
 
+import mightypork.rogue.sound.DeferredAudio;
 import mightypork.utils.math.coord.Coord;
 import mightypork.utils.objects.Mutable;
 

src/mightypork/rogue/sound/players/LoopPlayer.java

@@ -1,6 +1,7 @@
-package mightypork.rogue.audio;
+package mightypork.rogue.sound.players;
 
 
+import mightypork.rogue.sound.DeferredAudio;
 import mightypork.utils.control.interf.Updateable;
 import mightypork.utils.control.timing.Pauseable;
 import mightypork.utils.math.animation.AnimDouble;
@@ -14,7 +15,7 @@ public class LoopPlayer extends BaseAudioPlayer implements Updateable, Pauseable
 	private int sourceID = -1;
 	
 	/** animator for fade in and fade out */
-	private AnimDouble fadeAnim = new AnimDouble(0);
+	private final AnimDouble fadeAnim = new AnimDouble(0);
 	
 	private double lastUpdateGain = 0;
 	

src/mightypork/rogue/texture/DeferredLoader.java

@@ -0,0 +1,102 @@
+package mightypork.rogue.texture;
+
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.LinkedBlockingQueue;
+
+import mightypork.rogue.AppAccess;
+import mightypork.rogue.Deferred;
+import mightypork.rogue.bus.events.MainLoopTaskRequest;
+import mightypork.rogue.bus.events.ResourceLoadRequest;
+import mightypork.utils.control.interf.Destroyable;
+import mightypork.utils.logging.Log;
+
+
+/**
+ * Asynchronous resource loading thread.
+ * 
+ * @author MightyPork
+ */
+public class DeferredLoader extends Thread implements ResourceLoadRequest.Listener, Destroyable {
+	
+	public static void launch(AppAccess app)
+	{
+		(new DeferredLoader(app)).start();
+	}
+	
+	private ExecutorService exs = Executors.newCachedThreadPool();
+	
+	private LinkedBlockingQueue<Deferred> toLoad = new LinkedBlockingQueue<Deferred>();
+	private boolean stopped;
+	private AppAccess app;
+	
+	
+	public DeferredLoader(AppAccess app) {
+		super("Deferred loader");
+		this.app = app;
+	}
+	
+	
+	@Override
+	public void loadResource(Deferred resource)
+	{
+		toLoad.add(resource);
+	}
+	
+	
+	@Override
+	public void run()
+	{
+		while (!stopped) {
+			
+			try {
+				final Deferred def = toLoad.take();
+				if (def == null) continue;
+				
+				if (!def.isLoaded()) {
+					
+					// texture needs to be loaded in main thread, unfortunately.
+					// -> delegate to MainLoop
+					if (def instanceof DeferredTexture) {
+						app.bus().queue(new MainLoopTaskRequest(new Runnable() {
+							
+							@Override
+							public void run()
+							{
+								Log.f3("<DEFERRED> Loading \"" + Log.str(def) + "\"");
+								def.load();
+							}
+						}));
+						
+						continue;
+					}
+					
+					Log.f3("<DEFERRED> Loading \"" + Log.str(def) + "\"");
+					
+					exs.submit(new Runnable() {
+						
+						@Override
+						public void run()
+						{
+							def.load();
+						}
+					});
+				}
+				
+			} catch (InterruptedException ignored) {
+				//
+			}
+			
+		}
+	}
+	
+	
+	@Override
+	public void destroy()
+	{
+		stopped = true;
+		exs.shutdownNow();
+	}
+	
+}

src/mightypork/rogue/texture/DeferredTexture.java

@@ -1,4 +1,4 @@
-package mightypork.rogue.render.textures;
+package mightypork.rogue.texture;
 
 
 import mightypork.rogue.Deferred;
@@ -8,13 +8,13 @@ import mightypork.utils.math.coord.Rect;
 import org.newdawn.slick.opengl.Texture;
 
 
-public class MultiTexture implements Texture, Deferred {
+public class DeferredTexture implements Texture, Deferred {
 	
 	private Texture backingTexture;
-	private String resourcePath;
+	private final String resourcePath;
 	
 	
-	public MultiTexture(String resourcePath) {
+	public DeferredTexture(String resourcePath) {
 		this.resourcePath = resourcePath;
 	}
 	
@@ -26,7 +26,7 @@ public class MultiTexture implements Texture, Deferred {
 	
 	
 	@Override
-	public void load()
+	public synchronized void load()
 	{
 		if (!isLoaded()) {
 			backingTexture = Render.loadTexture(resourcePath);
@@ -144,4 +144,11 @@ public class MultiTexture implements Texture, Deferred {
 		backingTexture.setTextureFilter(textureFilter);
 	}
 	
+	
+	@Override
+	public String toString()
+	{
+		return "Texture(\"" + resourcePath + "\")";
+	}
+	
 }

src/mightypork/rogue/texture/TextureBank.java

@@ -1,10 +1,11 @@
-package mightypork.rogue.render.textures;
+package mightypork.rogue.texture;
 
 
 import java.util.HashMap;
 
 import mightypork.rogue.AppAccess;
 import mightypork.rogue.AppAdapter;
+import mightypork.rogue.bus.events.ResourceLoadRequest;
 import mightypork.utils.math.coord.Rect;
 
 import org.newdawn.slick.opengl.Texture;
@@ -21,11 +22,11 @@ public class TextureBank extends AppAdapter {
 		super(app);
 	}
 	
-	private HashMap<String, MultiTexture> textures = new HashMap<String, MultiTexture>();
+	private final HashMap<String, DeferredTexture> textures = new HashMap<String, DeferredTexture>();
 	
-	private HashMap<String, TxQuad> quads = new HashMap<String, TxQuad>();
+	private final HashMap<String, TxQuad> quads = new HashMap<String, TxQuad>();
 	
-	private MultiTexture lastTx;
+	private DeferredTexture lastTx;
 	
 	
 	/**
@@ -36,7 +37,9 @@ public class TextureBank extends AppAdapter {
 	 */
 	public void loadTexture(String key, String resourcePath)
 	{
-		MultiTexture tx = new MultiTexture(resourcePath);
+		DeferredTexture tx = new DeferredTexture(resourcePath);
+		bus().queue(new ResourceLoadRequest(tx));
+		
 		textures.put(key, tx);
 		lastTx = tx;
 	}
@@ -51,7 +54,7 @@ public class TextureBank extends AppAdapter {
 	 */
 	public void makeQuad(String quadKey, String textureKey, Rect quad)
 	{
-		MultiTexture tx = textures.get(textureKey);
+		DeferredTexture tx = textures.get(textureKey);
 		if (tx == null) throw new RuntimeException("Texture with key " + textureKey + " not defined!");
 		
 		TxQuad txquad = tx.getQuad(quad);
@@ -68,7 +71,7 @@ public class TextureBank extends AppAdapter {
 	 */
 	public void makeQuad(String quadKey, Rect quad)
 	{
-		MultiTexture tx = lastTx;
+		DeferredTexture tx = lastTx;
 		if (tx == null) throw new RuntimeException("There's no texture loaded yet, can't define quads!");
 		
 		TxQuad txquad = tx.getQuad(quad);

src/mightypork/rogue/texture/TxQuad.java

@@ -1,4 +1,4 @@
-package mightypork.rogue.render.textures;
+package mightypork.rogue.texture;
 
 
 import mightypork.utils.math.coord.Rect;
@@ -14,9 +14,9 @@ import org.newdawn.slick.opengl.Texture;
 public class TxQuad {
 	
 	/** The texture */
-	public Texture tx;
+	public final Texture tx;
 	/** Coords in texture (0-1) */
-	public Rect uvs;
+	public final Rect uvs;
 	
 	
 	/**

src/mightypork/utils/control/bus/EventBus.java

@@ -16,17 +16,30 @@ import mightypork.utils.logging.Log;
  */
 final public class EventBus implements Destroyable {
 	
+	/** Message channels */
 	private BufferedHashSet<EventChannel<?, ?>> channels = new BufferedHashSet<EventChannel<?, ?>>();
-	private BufferedHashSet<Object> clients = new BufferedHashSet<Object>();
-	private DelayQueue<DelayedMessage> sendQueue = new DelayQueue<DelayedMessage>();
-	private BusThread busThread;
 	
+	/** Registered clients */
+	private BufferedHashSet<Object> clients = new BufferedHashSet<Object>();
+	
+	/** Messages queued for delivery */
+	private DelayQueue<DelayedMessage> sendQueue = new DelayQueue<DelayedMessage>();
+	
+	/** Queue polling thread */
+	private QueuePollingThread busThread;
+	
+	/** Log all */
 	private boolean logging = false;
+	
+	/** Whether the bus was destroyed */
 	private boolean dead = false;
 	
 	
+	/**
+	 * Make a new bus and start it's queue thread.
+	 */
 	public EventBus() {
-		busThread = new BusThread();
+		busThread = new QueuePollingThread();
 		busThread.start();
 	}
 	
@@ -153,12 +166,18 @@ final public class EventBus implements Destroyable {
 			if (logging) Log.f3("<bus> - [ Sending: " + Log.str(message) + " ]");
 			
 			boolean sent = false;
+			boolean channelAccepted = false;
 			
 			for (EventChannel<?, ?> b : channels) {
+				if (b.canBroadcast(message)) channelAccepted = true;
 				sent |= b.broadcast(message, clients);
 			}
 			
-			if (!sent) Log.w("<bus> Not accepted by any channel: " + Log.str(message));
+			// more severe
+			if (!channelAccepted) Log.w("<bus> Not accepted by any channel: " + Log.str(message));
+			
+			// less severe
+			if (logging && !sent) Log.w("<bus> Not delivered to any client: " + Log.str(message));
 			
 			channels.setBuffering(false);
 			clients.setBuffering(false);
@@ -248,16 +267,23 @@ final public class EventBus implements Destroyable {
 		
 	}
 	
-	private class BusThread extends Thread {
+	private class QueuePollingThread extends Thread {
 		
-		public boolean stopped;
+		public boolean stopped = false;
+		
+		
+		public QueuePollingThread() {
+			super("Queue Polling Thread");
+		}
 		
 		
 		@Override
 		public void run()
 		{
+			DelayedMessage dm;
+			
 			while (!stopped) {
-				DelayedMessage dm = null;
+				dm = null;
 				
 				try {
 					dm = sendQueue.take();

src/mightypork/utils/control/bus/EventChannel.java

@@ -55,7 +55,7 @@ final public class EventChannel<EVENT extends Event<CLIENT>, CLIENT> {
 	 * 
 	 * @param message a message to be sent
 	 * @param clients collection of clients
-	 * @return true if message was accepted by this channel
+	 * @return true if message was sent
 	 */
 	public boolean broadcast(Event<?> message, Collection<Object> clients)
 	{
@@ -63,9 +63,7 @@ final public class EventChannel<EVENT extends Event<CLIENT>, CLIENT> {
 		
 		EVENT evt = messageClass.cast(message);
 		
-		doBroadcast(evt, clients, new HashSet<Object>());
-		
-		return true;
+		return doBroadcast(evt, clients, new HashSet<Object>());
 	}
 	
 	
@@ -75,14 +73,20 @@ final public class EventChannel<EVENT extends Event<CLIENT>, CLIENT> {
 	 * @param message sent message
 	 * @param clients subscribing clients
 	 * @param processed clients already processed
+	 * @return success
 	 */
-	private void doBroadcast(final EVENT message, final Collection<Object> clients, final Collection<Object> processed)
+	private boolean doBroadcast(final EVENT message, final Collection<Object> clients, final Collection<Object> processed)
 	{
+		boolean sent = false;
+		
 		for (Object client : clients) {
+			
+			// exclude obvious non-clients
 			if (!isClientValid(client)) {
 				continue;
 			}
 			
+			// avoid executing more times
 			if (processed.contains(client)) {
 				Log.w("<bus> Client already served: " + Log.str(client));
 				continue;
@@ -97,17 +101,28 @@ final public class EventChannel<EVENT extends Event<CLIENT>, CLIENT> {
 				}
 			}
 			
-			sendTo(client, message);
+			sent |= sendTo(client, message);
 			
+			// singular event ain't no whore, handled once only.
+			if (sent && message instanceof SingularEvent) return true;
+			
+			// pass on to delegated clients
 			if (client instanceof DelegatingClient) {
 				if (((DelegatingClient) client).doesDelegate()) {
+					
 					Collection<Object> children = ((DelegatingClient) client).getChildClients();
-					if (children != null && children.size() > 0) doBroadcast(message, children, processed);
+					
+					if (children != null && children.size() > 0) {
+						sent |= doBroadcast(message, children, processed);
+					}
+					
 				} else {
 					if (logging) Log.f3("<bus> Client not delegating: " + Log.str(client));
 				}
 			}
 		}
+		
+		return sent;
 	}
 	
 	
@@ -116,14 +131,17 @@ final public class EventChannel<EVENT extends Event<CLIENT>, CLIENT> {
 	 * 
 	 * @param client target client
 	 * @param message message to send
+	 * @return success
 	 */
 	@SuppressWarnings("unchecked")
-	private void sendTo(Object client, EVENT message)
+	private boolean sendTo(Object client, EVENT message)
 	{
 		if (isClientOfType(client)) {
 			if (logging) Log.f3("<bus> Delivered " + Log.str(message) + " to " + Log.str(client));
 			((Event<CLIENT>) message).handleBy((CLIENT) client);
+			return true;
 		}
+		return false;
 	}
 	
 	

src/mightypork/utils/control/bus/SingularEvent.java

@@ -0,0 +1,11 @@
+package mightypork.utils.control.bus;
+
+
+/**
+ * Event handled by only single client.
+ * 
+ * @author MightyPork
+ */
+public interface SingularEvent {
+	
+}

src/mightypork/utils/control/bus/events/DestroyEvent.java

@@ -5,6 +5,11 @@ import mightypork.utils.control.bus.Event;
 import mightypork.utils.control.interf.Destroyable;
 
 
+/**
+ * Invoke destroy() method of all subscribers. Used to deinit a system.
+ * 
+ * @author MightyPork
+ */
 public class DestroyEvent implements Event<Destroyable> {
 	
 	@Override

src/mightypork/utils/control/timing/TimerFps.java

@@ -95,7 +95,6 @@ public class TimerFps {
 	 */
 	public void startNewFrame()
 	{
-		// System.out.println("! start new frame !");
 		long time = getTime();
 		lastFrame = time;
 		nextFrame = time + FRAME;

src/mightypork/utils/logging/Log.java

@@ -18,7 +18,7 @@ public class Log {
 	 */
 	public static void f1(String msg)
 	{
-		if (esl && main != null) main.f1(msg);
+		if (esl && ready()) main.f1(msg);
 	}
 	
 	
@@ -29,7 +29,7 @@ public class Log {
 	 */
 	public static void f2(String msg)
 	{
-		if (esl && main != null) main.f2(msg);
+		if (esl && ready()) main.f2(msg);
 	}
 	
 	
@@ -40,7 +40,7 @@ public class Log {
 	 */
 	public static void f3(String msg)
 	{
-		if (esl && main != null) main.f3(msg);
+		if (esl && ready()) main.f3(msg);
 	}
 	
 	
@@ -51,7 +51,7 @@ public class Log {
 	 */
 	public static void i(String msg)
 	{
-		if (esl && main != null) main.i(msg);
+		if (esl && ready()) main.i(msg);
 	}
 	
 	
@@ -62,7 +62,7 @@ public class Log {
 	 */
 	public static void w(String msg)
 	{
-		if (esl && main != null) main.w(msg);
+		if (esl && ready()) main.w(msg);
 	}
 	
 	
@@ -73,7 +73,7 @@ public class Log {
 	 */
 	public static void e(String msg)
 	{
-		if (esl && main != null) main.e(msg);
+		if (esl && ready()) main.e(msg);
 	}
 	
 	
@@ -85,7 +85,7 @@ public class Log {
 	 */
 	public static void e(String msg, Throwable thrown)
 	{
-		if (esl && main != null) main.e(msg, thrown);
+		if (esl && ready()) main.e(msg, thrown);
 	}
 	
 	
@@ -96,13 +96,13 @@ public class Log {
 	 */
 	public static void e(Throwable thrown)
 	{
-		if (esl && main != null) main.e(thrown);
+		if (esl && ready()) main.e(thrown);
 	}
 	
 	
 	public static void enable(boolean flag)
 	{
-		if (esl && main != null) main.enable(flag);
+		if (esl && ready()) main.enable(flag);
 	}
 	
 	
@@ -163,7 +163,7 @@ public class Log {
 	
 	public int addMonitor(LogMonitor mon)
 	{
-		if (main == null) throw new IllegalStateException("Main logger not initialized.");
+		if (!ready()) throw new IllegalStateException("Main logger not initialized.");
 		
 		return main.addMonitor(mon);
 	}
@@ -171,7 +171,7 @@ public class Log {
 	
 	public void removeMonitor(int id)
 	{
-		if (main == null) throw new IllegalStateException("Main logger not initialized.");
+		if (!ready()) throw new IllegalStateException("Main logger not initialized.");
 		
 		main.removeMonitor(id);
 	}
@@ -207,4 +207,10 @@ public class Log {
 		
 		return (enclosing == null ? "" : enclosing.getSimpleName() + ".") + cls.getSimpleName();
 	}
+	
+	
+	public static boolean ready()
+	{
+		return main != null;
+	}
 }

src/mightypork/utils/math/constraints/ConstraintFactory.java

@@ -245,7 +245,7 @@ public class ConstraintFactory {
 				double height = getContext().getRect().getSize().y;
 				double perRow = height / rows;
 				
-				return Rect.fromSize(getOrigin().add(0, perRow * (rows - index - 1)), getSize().setY(perRow));
+				return Rect.fromSize(getOrigin().add(0, perRow * index), getSize().setY(perRow));
 			}
 		};
 	}

src/mightypork/utils/math/coord/Rect.java

@@ -239,7 +239,7 @@ public class Rect {
 	 */
 	public Coord getCenterBottom()
 	{
-		return new Coord((max.x + min.x) / 2, min.y);
+		return new Coord((max.x + min.x) / 2D, min.y);
 	}
 	
 	
@@ -250,7 +250,7 @@ public class Rect {
 	 */
 	public Coord getCenterLeft()
 	{
-		return new Coord(min.x, (max.y + min.y) / 2);
+		return new Coord(min.x, (max.y + min.y) / 2D);
 	}
 	
 	
@@ -261,7 +261,7 @@ public class Rect {
 	 */
 	public Coord getCenterRight()
 	{
-		return new Coord(max.x, (max.y + min.y) / 2);
+		return new Coord(max.x, (max.y + min.y) / 2D);
 	}
 	
 	
@@ -272,7 +272,7 @@ public class Rect {
 	 */
 	public Coord getCenterTop()
 	{
-		return new Coord((max.x + min.x) / 2, max.y);
+		return new Coord((max.x + min.x) / 2D, max.y);
 	}