overlays system

src/mightypork/gamecore/control/BaseApp.java

@@ -255,7 +255,7 @@ public abstract class BaseApp implements AppAccess, UncaughtExceptionHandler {
 		bus.addChannel(LayoutChangeEvent.class, LayoutChangeEvent.Listener.class);
 		
 		// input events
-		bus.addChannel(ScreenChangeEvent.class, ScreenChangeEvent.Listener.class);
+		bus.addChannel(ViewportChangeEvent.class, ViewportChangeEvent.Listener.class);
 		bus.addChannel(KeyEvent.class, KeyEvent.Listener.class);
 		bus.addChannel(MouseMotionEvent.class, MouseMotionEvent.Listener.class);
 		bus.addChannel(MouseButtonEvent.class, MouseButtonEvent.Listener.class);

src/mightypork/gamecore/control/GameLoop.java

@@ -6,8 +6,8 @@ import java.util.concurrent.ConcurrentLinkedQueue;
 
 import mightypork.gamecore.control.events.MainLoopTaskRequest;
 import mightypork.gamecore.control.events.UpdateEvent;
-import mightypork.gamecore.gui.components.Renderable;
 import mightypork.gamecore.gui.screens.ScreenRegistry;
+import mightypork.gamecore.render.Renderable;
 import mightypork.util.annotations.DefaultImpl;
 import mightypork.util.control.timing.TimerDelta;
 

src/mightypork/gamecore/control/events/ViewportChangeEvent.java

@@ -10,7 +10,7 @@ import mightypork.util.control.eventbus.events.Event;
  * 
  * @author MightyPork
  */
-public class ScreenChangeEvent implements Event<ScreenChangeEvent.Listener> {
+public class ViewportChangeEvent implements Event<ViewportChangeEvent.Listener> {
 	
 	private final boolean fullscreen;
 	private final Vect screenSize;
@@ -22,7 +22,7 @@ public class ScreenChangeEvent implements Event<ScreenChangeEvent.Listener> {
 	 * @param fullscreen is now fullscreen
 	 * @param size new screen size
 	 */
-	public ScreenChangeEvent(boolean fsChanged, boolean fullscreen, Vect size) {
+	public ViewportChangeEvent(boolean fsChanged, boolean fullscreen, Vect size) {
 		this.fullscreen = fullscreen;
 		this.screenSize = size;
 		this.fsChanged = fsChanged;
@@ -59,11 +59,11 @@ public class ScreenChangeEvent implements Event<ScreenChangeEvent.Listener> {
 	@Override
 	public void handleBy(Listener handler)
 	{
-		handler.receive(this);
+		handler.onViewportChanged(this);
 	}
 	
 	/**
-	 * {@link ScreenChangeEvent} listener
+	 * {@link ViewportChangeEvent} listener
 	 * 
 	 * @author MightyPork
 	 */
@@ -74,6 +74,6 @@ public class ScreenChangeEvent implements Event<ScreenChangeEvent.Listener> {
 		 * 
 		 * @param event
 		 */
-		void receive(ScreenChangeEvent event);
+		void onViewportChanged(ViewportChangeEvent event);
 	}
 }

src/mightypork/gamecore/gui/components/PluggableRenderable.java

@@ -1,6 +1,7 @@
 package mightypork.gamecore.gui.components;
 
 
+import mightypork.gamecore.render.Renderable;
 import mightypork.util.constraints.rect.Rect;
 import mightypork.util.constraints.rect.proxy.PluggableRectBound;
 import mightypork.util.constraints.rect.proxy.RectBound;

src/mightypork/gamecore/gui/components/VisualComponent.java

@@ -2,6 +2,7 @@ package mightypork.gamecore.gui.components;
 
 
 import mightypork.gamecore.control.events.LayoutChangeEvent;
+import mightypork.gamecore.render.Renderable;
 import mightypork.util.annotations.DefaultImpl;
 import mightypork.util.constraints.rect.Rect;
 import mightypork.util.constraints.rect.caching.AbstractRectCache;
@@ -79,7 +80,7 @@ public abstract class VisualComponent extends AbstractRectCache implements Compo
 	
 	
 	@Override
-	public final void onChange()
+	public final void onConstraintChanged()
 	{
 		updateLayout();
 	}

src/mightypork/gamecore/gui/screens/BaseScreen.java

@@ -0,0 +1,160 @@
+package mightypork.gamecore.gui.screens;
+
+
+import mightypork.gamecore.control.AppAccess;
+import mightypork.gamecore.control.AppSubModule;
+import mightypork.gamecore.control.events.LayoutChangeEvent;
+import mightypork.gamecore.control.events.ViewportChangeEvent;
+import mightypork.gamecore.input.KeyBinder;
+import mightypork.gamecore.input.KeyBindingPool;
+import mightypork.gamecore.input.KeyStroke;
+import mightypork.gamecore.render.Render;
+import mightypork.util.annotations.DefaultImpl;
+import mightypork.util.constraints.rect.Rect;
+
+
+/**
+ * Screen class.
+ * 
+ * @author MightyPork
+ */
+public abstract class BaseScreen extends AppSubModule implements Screen, KeyBinder, ViewportChangeEvent.Listener {
+	
+	private final KeyBindingPool keybindings = new KeyBindingPool();
+	
+	private volatile boolean active;
+	private volatile boolean needSetupViewport = false;
+	
+	
+	/**
+	 * @param app app access
+	 */
+	public BaseScreen(AppAccess app) {
+		super(app);
+		
+		// disable events initially
+		setListening(false);
+		
+		addChildClient(keybindings);
+	}
+	
+	
+	private void fireLayoutChangeEvent()
+	{
+		getEventBus().sendDirectToChildren(this, new LayoutChangeEvent());
+	}
+	
+	
+	@Override
+	public final void bindKeyStroke(KeyStroke stroke, Runnable task)
+	{
+		keybindings.bindKeyStroke(stroke, task);
+	}
+	
+	
+	@Override
+	public final void unbindKeyStroke(KeyStroke stroke)
+	{
+		keybindings.unbindKeyStroke(stroke);
+	}
+	
+	
+	/**
+	 * Prepare for being shown
+	 * 
+	 * @param shown true to show, false to hide
+	 */
+	@Override
+	public final void setActive(boolean shown)
+	{
+		if (shown) {
+			active = true;
+			needSetupViewport = true;
+			
+			fireLayoutChangeEvent();
+			onScreenEnter();
+			
+			// enable events
+			setListening(true);
+			
+		} else {
+			onScreenLeave();
+			
+			active = false;
+			
+			// disable events
+			setListening(false);
+		}
+	}
+	
+	
+	/**
+	 * @return true if screen is the current screen
+	 */
+	@Override
+	public final boolean isActive()
+	{
+		return active;
+	}
+	
+	
+	@Override
+	public final void onViewportChanged(ViewportChangeEvent event)
+	{
+		if (!isActive()) return;
+		
+		// fire event
+		fireLayoutChangeEvent();
+		
+		needSetupViewport = true;
+	}
+	
+	
+	@Override
+	public final Rect getRect()
+	{
+		return getDisplay().getRect();
+	}
+	
+	
+	@Override
+	public void render()
+	{
+		if (!isActive()) return;
+		
+		if (needSetupViewport) {
+			Render.setupOrtho(getDisplay().getSize());
+		}
+		
+		Render.pushState();
+		
+		renderScreen();
+		
+		Render.popState();
+	}
+	
+	
+	/**
+	 * Called when the screen becomes active
+	 */
+	@DefaultImpl
+	protected void onScreenEnter()
+	{
+	}
+	
+	
+	/**
+	 * Called when the screen is no longer active
+	 */
+	@DefaultImpl
+	protected void onScreenLeave()
+	{
+	}
+	
+	
+	/**
+	 * Render screen contents (context is ready for 2D rendering)
+	 */
+	protected abstract void renderScreen();
+	
+}

src/mightypork/gamecore/gui/screens/LayeredScreen.java

@@ -5,7 +5,6 @@ import java.util.Collection;
 import java.util.TreeSet;
 
 import mightypork.gamecore.control.AppAccess;
-import mightypork.util.constraints.vect.Vect;
 
 
 /**
@@ -13,7 +12,7 @@ import mightypork.util.constraints.vect.Vect;
  * 
  * @author MightyPork
  */
-public abstract class LayeredScreen extends Screen {
+public abstract class LayeredScreen extends BaseScreen {
 	
 	private final Collection<ScreenLayer> layers = new TreeSet<>();
 	
@@ -47,18 +46,6 @@ public abstract class LayeredScreen extends Screen {
 	}
 	
 	
-	/**
-	 * Remove a layer
-	 * 
-	 * @param layer
-	 */
-	protected void removeLayer(ScreenLayer layer)
-	{
-		this.layers.remove(layer);
-		removeChildClient(layer);
-	}
-	
-	
 	@Override
 	protected void onScreenEnter()
 	{
@@ -71,19 +58,9 @@ public abstract class LayeredScreen extends Screen {
 	@Override
 	protected void onScreenLeave()
 	{
-		
 		for (final ScreenLayer layer : layers) {
 			layer.onScreenLeave();
 		}
 	}
 	
-	
-	@Override
-	protected void onSizeChanged(Vect size)
-	{
-		for (final ScreenLayer layer : layers) {
-			layer.onSizeChanged(size);
-		}
-	}
-	
 }

src/mightypork/gamecore/gui/screens/Overlay.java

@@ -0,0 +1,140 @@
+package mightypork.gamecore.gui.screens;
+
+
+import java.util.Collection;
+import java.util.LinkedHashSet;
+
+import mightypork.gamecore.control.AppAccess;
+import mightypork.gamecore.control.AppSubModule;
+import mightypork.gamecore.control.events.LayoutChangeEvent;
+import mightypork.gamecore.gui.Hideable;
+import mightypork.gamecore.gui.components.VisualComponent;
+import mightypork.gamecore.gui.components.layout.ConstraintLayout;
+import mightypork.gamecore.input.KeyBinder;
+import mightypork.gamecore.input.KeyBindingPool;
+import mightypork.gamecore.input.KeyStroke;
+import mightypork.gamecore.render.Renderable;
+import mightypork.util.annotations.DefaultImpl;
+import mightypork.util.constraints.vect.Vect;
+import mightypork.util.control.timing.Updateable;
+
+
+/**
+ * Abstract overlay.<br>
+ * Overlay is connected to event bus and is renderable.
+ * 
+ * @author MightyPork
+ */
+public abstract class Overlay extends AppSubModule implements Updateable, Comparable<Overlay>, Renderable, KeyBinder, Hideable, LayoutChangeEvent.Listener {
+	
+	private boolean visible = true;
+	private final KeyBindingPool keybindings = new KeyBindingPool();
+	
+	/** Root layout, rendered and attached to the event bus. */
+	protected final ConstraintLayout root;
+	
+	/** Constraint: Mouse position. */
+	protected final Vect mouse;
+	
+	/** Extra rendered items (outside root) */
+	protected final Collection<Renderable> rendered = new LinkedHashSet<>();
+	
+	/** Extra updated items (outside root - those can just implement Updateable) */
+	protected final Collection<Updateable> updated = new LinkedHashSet<>();
+	
+	
+	public Overlay(AppAccess app) {
+		super(app);
+		
+		this.mouse = getInput().getMousePos();
+		
+		this.root = new ConstraintLayout(app, getDisplay());
+		addChildClient(root);
+		addChildClient(keybindings);
+		
+		rendered.add(root);
+	}
+	
+	
+	@Override
+	public final void bindKeyStroke(KeyStroke stroke, Runnable task)
+	{
+		keybindings.bindKeyStroke(stroke, task);
+	}
+	
+	
+	@Override
+	public final void unbindKeyStroke(KeyStroke stroke)
+	{
+		keybindings.unbindKeyStroke(stroke);
+	}
+	
+	
+	@Override
+	public final boolean isVisible()
+	{
+		return visible;
+	}
+	
+	
+	@Override
+	public void setVisible(boolean visible)
+	{
+		this.visible = visible;
+	}
+	
+	
+	@Override
+	public final int compareTo(Overlay o)
+	{
+		return getPriority() - o.getPriority();
+	}
+	
+	
+	/**
+	 * Get rendering priority
+	 * 
+	 * @return higher = on top.
+	 */
+	@DefaultImpl
+	public abstract int getPriority();
+	
+	
+	/**
+	 * Render the overlay. The caller MUST check for visibility himself.
+	 */
+	@Override
+	public void render()
+	{
+		for (Renderable r : rendered) {
+			r.render();
+		}
+	}
+	
+	
+	@Override
+	public void update(double delta)
+	{
+		for (Updateable u : updated) {
+			u.update(delta);
+		}
+	}
+	
+	
+	/**
+	 * <p>
+	 * Screen size changed.
+	 * </p>
+	 * <p>
+	 * Layouts / components should listen for this event and update their cached
+	 * constraints; components added to root or directly to this overlay as
+	 * child clients will receive the event.
+	 * </p>
+	 */
+	@Override
+	@DefaultImpl
+	public void onLayoutChanged()
+	{
+	}
+	
+}

src/mightypork/gamecore/gui/screens/Screen.java

@@ -2,173 +2,34 @@ package mightypork.gamecore.gui.screens;
 
 
 import mightypork.gamecore.control.AppAccess;
-import mightypork.gamecore.control.AppSubModule;
+import mightypork.gamecore.render.Renderable;
-import mightypork.gamecore.control.events.LayoutChangeEvent;
-import mightypork.gamecore.control.events.ScreenChangeEvent;
-import mightypork.gamecore.gui.components.Renderable;
-import mightypork.gamecore.input.KeyBinder;
-import mightypork.gamecore.input.KeyBindingPool;
-import mightypork.gamecore.input.KeyStroke;
-import mightypork.gamecore.render.Render;
-import mightypork.util.annotations.DefaultImpl;
-import mightypork.util.constraints.rect.Rect;
 import mightypork.util.constraints.rect.proxy.RectBound;
-import mightypork.util.constraints.vect.Vect;
 
 
 /**
- * Screen class.
+ * Game screen
  * 
  * @author MightyPork
  */
-public abstract class Screen extends AppSubModule implements Renderable, KeyBinder, RectBound, ScreenChangeEvent.Listener {
+public interface Screen extends Renderable, RectBound, AppAccess {
-	
-	private final KeyBindingPool keybindings = new KeyBindingPool();
-	
-	private volatile boolean active;
-	private volatile boolean needSetupViewport = false;
-	
-	
-	/**
-	 * @param app app access
-	 */
-	public Screen(AppAccess app) {
-		super(app);
-		
-		// disable events initially
-		setListening(false);
-		
-		addChildClient(keybindings);
-	}
-	
-	
-	@Override
-	public final void bindKeyStroke(KeyStroke stroke, Runnable task)
-	{
-		keybindings.bindKeyStroke(stroke, task);
-	}
-	
-	
-	@Override
-	public final void unbindKeyStroke(KeyStroke stroke)
-	{
-		keybindings.unbindKeyStroke(stroke);
-	}
-	
 	
 	/**
 	 * Prepare for being shown
 	 * 
 	 * @param shown true to show, false to hide
 	 */
-	public final void setActive(boolean shown)
+	void setActive(boolean shown);
-	{
-		if (shown) {
-			active = true;
-			needSetupViewport = true;
-			
-			onSizeChanged(getRect().size());
-			onScreenEnter();
-			
-			// enable events
-			setListening(true);
-			
-		} else {
-			onScreenLeave();
-			
-			active = false;
-			
-			// disable events
-			setListening(false);
-		}
-	}
 	
 	
 	/**
 	 * @return true if screen is the current screen
 	 */
-	public final boolean isActive()
+	boolean isActive();
-	{
-		return active;
-	}
-	
-	
-	@Override
-	public final void receive(ScreenChangeEvent event)
-	{
-		if (!isActive()) return;
-		
-		onSizeChanged(event.getScreenSize());
-		
-		// fire event
-		getEventBus().sendDirectToChildren(this, new LayoutChangeEvent());
-		
-		needSetupViewport = true;
-	}
-	
-	
-	@Override
-	public final Rect getRect()
-	{
-		return getDisplay().getRect();
-	}
-	
-	
-	@Override
-	public void render()
-	{
-		if (!isActive()) return;
-		
-		if (needSetupViewport) {
-			Render.setupOrtho(getDisplay().getSize());
-		}
-		
-		Render.pushState();
-		
-		renderScreen();
-		
-		Render.popState();
-	}
-	
-	
-	/**
-	 * Called when the screen becomes active
-	 */
-	@DefaultImpl
-	protected void onScreenEnter()
-	{
-	}
-	
-	
-	/**
-	 * Called when the screen is no longer active
-	 */
-	@DefaultImpl
-	protected void onScreenLeave()
-	{
-	}
-	
-	
-	/**
-	 * Update GUI for new screen size
-	 * 
-	 * @param size screen size
-	 */
-	@DefaultImpl
-	protected void onSizeChanged(Vect size)
-	{
-	}
-	
-	
-	/**
-	 * Render screen contents (context is ready for 2D rendering)
-	 */
-	protected abstract void renderScreen();
 	
 	
 	/**
 	 * @return screen identifier to be used for requests.
 	 */
-	public abstract String getName();
+	String getName();
 	
 }

src/mightypork/gamecore/gui/screens/ScreenLayer.java

@@ -1,19 +1,7 @@
 package mightypork.gamecore.gui.screens;
 
 
-import java.util.Collection;
-import java.util.LinkedHashSet;
-
-import mightypork.gamecore.control.AppSubModule;
-import mightypork.gamecore.gui.Hideable;
-import mightypork.gamecore.gui.components.Renderable;
-import mightypork.gamecore.gui.components.layout.ConstraintLayout;
-import mightypork.gamecore.input.KeyBinder;
-import mightypork.gamecore.input.KeyBindingPool;
-import mightypork.gamecore.input.KeyStroke;
 import mightypork.util.annotations.DefaultImpl;
-import mightypork.util.constraints.vect.Vect;
-import mightypork.util.control.timing.Updateable;
 
 
 /**
@@ -21,25 +9,10 @@ import mightypork.util.control.timing.Updateable;
  * 
  * @author MightyPork
  */
-public abstract class ScreenLayer extends AppSubModule implements Updateable, Comparable<ScreenLayer>, Renderable, KeyBinder, Hideable {
+public abstract class ScreenLayer extends Overlay {
-	
-	private boolean visible = true;
-	
-	private final KeyBindingPool keybindings = new KeyBindingPool();
-	
-	/** Root layout, rendered and attached to the event bus */
-	protected final ConstraintLayout root;
-	
-	protected final Vect mouse;
 	
 	private final Screen screen;
 	
-	/** Extra rendered items (outside root) */
-	protected final Collection<Renderable> rendered = new LinkedHashSet<>();
-	
-	/** Extra updated items (outside root - those can just implement Updateable) */
-	protected final Collection<Updateable> updated = new LinkedHashSet<>();
-	
 	
 	/**
 	 * @param screen parent screen
@@ -48,31 +21,6 @@ public abstract class ScreenLayer extends AppSubModule implements Updateable, Co
 		super(screen); // screen as AppAccess
 		
 		this.screen = screen;
-		
-		this.mouse = getInput().getMousePos();
-		
-		this.root = new ConstraintLayout(screen, screen);
-		addChildClient(root);
-		addChildClient(keybindings);
-		
-		rendered.add(root);
-		
-		// root is on the bus, all attached components
-		// will receive events (such as update)
-	}
-	
-	
-	@Override
-	public final void bindKeyStroke(KeyStroke stroke, Runnable task)
-	{
-		keybindings.bindKeyStroke(stroke, task);
-	}
-	
-	
-	@Override
-	public final void unbindKeyStroke(KeyStroke stroke)
-	{
-		keybindings.unbindKeyStroke(stroke);
 	}
 	
 	
@@ -85,27 +33,6 @@ public abstract class ScreenLayer extends AppSubModule implements Updateable, Co
 	}
 	
 	
-	@Override
-	public final boolean isVisible()
-	{
-		return visible;
-	}
-	
-	
-	@Override
-	public void setVisible(boolean visible)
-	{
-		this.visible = visible;
-	}
-	
-	
-	@Override
-	public final int compareTo(ScreenLayer o)
-	{
-		return getPriority() - o.getPriority();
-	}
-	
-	
 	/**
 	 * Called when the screen becomes active
 	 */
@@ -123,51 +50,4 @@ public abstract class ScreenLayer extends AppSubModule implements Updateable, Co
 	{
 	}
 	
-	
-	/**
-	 * Update GUI for new screen size
-	 * 
-	 * @param size screen size
-	 */
-	@DefaultImpl
-	protected void onSizeChanged(Vect size)
-	{
-	}
-	
-	
-	/**
-	 * @return higher = on top.
-	 */
-	@DefaultImpl
-	public abstract int getPriority();
-	
-	
-	@Override
-	public final void render()
-	{
-		if (!visible) return;
-		
-		renderLayer();
-	}
-	
-	
-	/**
-	 * Render layer contents.
-	 */
-	protected void renderLayer()
-	{
-		// render renderables (including root layout)
-		for (Renderable r : rendered)
-			r.render();
-	}
-	
-	
-	@Override
-	public void update(double delta)
-	{
-		// update updateables
-		for (Updateable u : updated)
-			u.update(delta);
-	}
-	
 }

src/mightypork/gamecore/gui/screens/ScreenRegistry.java

@@ -1,12 +1,15 @@
 package mightypork.gamecore.gui.screens;
 
 
+import java.util.Collection;
 import java.util.HashMap;
+import java.util.Map;
+import java.util.TreeSet;
 
 import mightypork.gamecore.control.AppAccess;
 import mightypork.gamecore.control.AppModule;
 import mightypork.gamecore.control.events.ScreenRequestEvent;
-import mightypork.gamecore.gui.components.Renderable;
+import mightypork.gamecore.render.Renderable;
 import mightypork.util.annotations.DefaultImpl;
 import mightypork.util.logging.Log;
 
@@ -18,7 +21,8 @@ import mightypork.util.logging.Log;
  */
 public class ScreenRegistry extends AppModule implements ScreenRequestEvent.Listener, Renderable {
 	
-	private final HashMap<String, Screen> screens = new HashMap<>();
+	private final Map<String, Screen> screens = new HashMap<>();
+	private final Collection<Overlay> overlays = new TreeSet<>();
 	private volatile Screen active = null;
 	
 	
@@ -35,33 +39,58 @@ public class ScreenRegistry extends AppModule implements ScreenRequestEvent.List
 	 * 
 	 * @param screen added screen
 	 */
-	public void add(Screen screen)
+	public void addScreen(Screen screen)
 	{
 		screens.put(screen.getName(), screen);
 		addChildClient(screen);
 	}
 
 	
+	
+	/**
+	 * Add an overlay
+	 * 
+	 * @param overlay added overlay
+	 */
+	public void addOverlay(Overlay overlay)
+	{
+		overlays.add(overlay);
+		addChildClient(overlay);
+	}
+	
 	@Override
 	public void showScreen(String key)
 	{
 		Log.f3("Request to show screen \"" + key + "\"");
 		
-		final Screen toshow = screens.get(key);
+		// find screen to show
-		if (toshow == null) throw new RuntimeException("Screen " + key + " not defined.");
+		final Screen toShow = screens.get(key);
+		if (toShow == null) {
+			throw new RuntimeException("Screen " + key + " not defined.");
+		}
 		
-		if (active != null) active.setActive(false);
+		// deactivate last screen
+		if (active != null) {
+			active.setActive(false);
+		}
 		
-		toshow.setActive(true);
+		// activate new screen
+		toShow.setActive(true);
 		
-		active = toshow;
+		active = toShow;
 	}
 	
 	
 	@Override
 	public void render()
 	{
-		if (active != null) active.render();
+		if (active != null) {
+			active.render();
+
+			for (final Overlay overlay : overlays) {
+				if (overlay.isVisible()) overlay.render();
+			}
+		}
 	}
 	
 	

src/mightypork/gamecore/render/DisplaySystem.java

@@ -7,7 +7,7 @@ import java.nio.ByteBuffer;
 
 import mightypork.gamecore.control.AppAccess;
 import mightypork.gamecore.control.AppModule;
-import mightypork.gamecore.control.events.ScreenChangeEvent;
+import mightypork.gamecore.control.events.ViewportChangeEvent;
 import mightypork.util.constraints.rect.Rect;
 import mightypork.util.constraints.rect.proxy.RectBound;
 import mightypork.util.constraints.vect.Vect;
@@ -130,7 +130,7 @@ public class DisplaySystem extends AppModule implements RectBound {
 				Display.update();
 			}
 			
-			getEventBus().send(new ScreenChangeEvent(true, Display.isFullscreen(), getSize()));
+			getEventBus().send(new ViewportChangeEvent(true, Display.isFullscreen(), getSize()));
 			
 		} catch (final Throwable t) {
 			Log.e("Failed to toggle fullscreen mode.", t);
@@ -221,7 +221,7 @@ public class DisplaySystem extends AppModule implements RectBound {
 	{
 		// handle resize
 		if (Display.wasResized()) {
-			getEventBus().send(new ScreenChangeEvent(false, Display.isFullscreen(), getSize()));
+			getEventBus().send(new ViewportChangeEvent(false, Display.isFullscreen(), getSize()));
 		}
 		
 		glLoadIdentity();

src/mightypork/gamecore/render/Renderable.java

@@ -1,4 +1,4 @@
-package mightypork.gamecore.gui.components;
+package mightypork.gamecore.render;
 
 
 /**
@@ -9,7 +9,7 @@ package mightypork.gamecore.gui.components;
 public interface Renderable {
 	
 	/**
-	 * Render on screen
+	 * Render on screen.
 	 */
 	void render();
 	

src/mightypork/rogue/App.java

@@ -66,11 +66,11 @@ public class App extends BaseApp {
 	@Override
 	protected void initScreens(ScreenRegistry screens)
 	{
-		screens.add(new ScreenTestBouncy(this));
+		screens.addScreen(new ScreenTestBouncy(this));
-		screens.add(new ScreenTestCat(this));
+		screens.addScreen(new ScreenTestCat(this));
-		screens.add(new ScreenTestRender(this));
+		screens.addScreen(new ScreenTestRender(this));
 		
-		screens.add(new ScreenMainMenu(this));
+		screens.addScreen(new ScreenMainMenu(this));
 		
 		screens.showScreen("rogue.menu");
 	}

src/mightypork/rogue/screens/LayerFps.java

@@ -3,7 +3,7 @@ package mightypork.rogue.screens;
 
 import mightypork.gamecore.gui.AlignX;
 import mightypork.gamecore.gui.components.painters.TextPainter;
-import mightypork.gamecore.gui.screens.Screen;
+import mightypork.gamecore.gui.screens.BaseScreen;
 import mightypork.gamecore.gui.screens.ScreenLayer;
 import mightypork.gamecore.input.KeyStroke;
 import mightypork.gamecore.input.Keys;
@@ -21,7 +21,7 @@ public class LayerFps extends ScreenLayer {
 	TextPainter tp;
 	
 	
-	public LayerFps(Screen screen) {
+	public LayerFps(BaseScreen screen) {
 		super(screen);
 		
 		/*
@@ -56,13 +56,6 @@ public class LayerFps extends ScreenLayer {
 	}
 	
 	
-	@Override
-	protected void renderLayer()
-	{
-		super.renderLayer();
-	}
-	
-	
 	@Override
 	public int getPriority()
 	{

src/mightypork/rogue/screens/main_menu/MenuLayer.java

@@ -4,7 +4,7 @@ package mightypork.rogue.screens.main_menu;
 import mightypork.gamecore.control.events.ScreenRequestEvent;
 import mightypork.gamecore.gui.AlignY;
 import mightypork.gamecore.gui.components.layout.VerticalFixedFlowLayout;
-import mightypork.gamecore.gui.screens.Screen;
+import mightypork.gamecore.gui.screens.BaseScreen;
 import mightypork.gamecore.gui.screens.ScreenLayer;
 import mightypork.rogue.events.ActionRequest;
 import mightypork.rogue.events.ActionRequest.RequestType;
@@ -16,7 +16,7 @@ import mightypork.util.math.color.Color;
 
 class MenuLayer extends ScreenLayer {
 	
-	public MenuLayer(Screen screen) {
+	public MenuLayer(BaseScreen screen) {
 		super(screen);
 		
 		init();

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

@@ -7,7 +7,7 @@ import java.util.List;
 import mightypork.gamecore.gui.AlignX;
 import mightypork.gamecore.gui.components.layout.RowHolder;
 import mightypork.gamecore.gui.components.painters.TextPainter;
-import mightypork.gamecore.gui.screens.Screen;
+import mightypork.gamecore.gui.screens.BaseScreen;
 import mightypork.gamecore.gui.screens.ScreenLayer;
 import mightypork.gamecore.input.KeyStroke;
 import mightypork.gamecore.input.Keys;
@@ -23,7 +23,7 @@ public class LayerBouncyBoxes extends ScreenLayer {
 	private RowHolder layout;
 	
 	
-	public LayerBouncyBoxes(Screen screen) {
+	public LayerBouncyBoxes(BaseScreen screen) {
 		super(screen);
 		
 		bindKeyStroke(new KeyStroke(true, Keys.KEY_RIGHT), new Runnable() {

src/mightypork/rogue/screens/test_cat_sound/LayerColor.java

@@ -2,14 +2,14 @@ package mightypork.rogue.screens.test_cat_sound;
 
 
 import mightypork.gamecore.gui.components.painters.QuadPainter;
-import mightypork.gamecore.gui.screens.Screen;
+import mightypork.gamecore.gui.screens.BaseScreen;
 import mightypork.gamecore.gui.screens.ScreenLayer;
 import mightypork.util.math.color.Color;
 
 
 public class LayerColor extends ScreenLayer {
 	
-	public LayerColor(Screen screen, Color color) {
+	public LayerColor(BaseScreen screen, Color color) {
 		super(screen);
 		
 		root.add(new QuadPainter(color));

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

@@ -8,7 +8,7 @@ import mightypork.gamecore.gui.AlignX;
 import mightypork.gamecore.gui.components.painters.ImagePainter;
 import mightypork.gamecore.gui.components.painters.QuadPainter;
 import mightypork.gamecore.gui.components.painters.TextPainter;
-import mightypork.gamecore.gui.screens.Screen;
+import mightypork.gamecore.gui.screens.BaseScreen;
 import mightypork.gamecore.gui.screens.ScreenLayer;
 import mightypork.gamecore.input.KeyStroke;
 import mightypork.gamecore.input.Keys;
@@ -29,7 +29,7 @@ public class LayerFlyingCat extends ScreenLayer implements MouseButtonEvent.List
 	private final Random rand = new Random();
 	
 	
-	public LayerFlyingCat(Screen screen) {
+	public LayerFlyingCat(BaseScreen screen) {
 		super(screen);
 		
 		// timing

src/mightypork/rogue/screens/test_render/LayerTestGradient.java

@@ -1,7 +1,7 @@
 package mightypork.rogue.screens.test_render;
 
 
-import mightypork.gamecore.gui.screens.Screen;
+import mightypork.gamecore.gui.screens.BaseScreen;
 import mightypork.gamecore.gui.screens.ScreenLayer;
 import mightypork.gamecore.render.Render;
 import mightypork.util.constraints.rect.proxy.RectBound;
@@ -14,7 +14,7 @@ public class LayerTestGradient extends ScreenLayer {
 	private final RectBound pos2;
 	
 	
-	public LayerTestGradient(Screen screen) {
+	public LayerTestGradient(BaseScreen screen) {
 		super(screen);
 		
 		pos1 = root.topEdge().growDown(64);
@@ -23,7 +23,7 @@ public class LayerTestGradient extends ScreenLayer {
 	
 	
 	@Override
-	protected void renderLayer()
+	public void render()
 	{
 		Render.quadColor(root, Color.WHITE, Color.BLUE, Color.BLACK, Color.MAGENTA);
 		Render.quadGradH(pos1.getRect(), Color.GREEN, Color.RED);

src/mightypork/util/constraints/ConstraintCache.java

@@ -12,7 +12,7 @@ public interface ConstraintCache<C> extends Pollable {
 	/**
 	 * Called after the cache has changed value (and digest).
 	 */
-	void onChange();
+	void onConstraintChanged();
 	
 	
 	/**

src/mightypork/util/constraints/num/caching/AbstractNumCache.java

@@ -54,12 +54,12 @@ public abstract class AbstractNumCache extends NumAdapter implements ConstraintC
 		// mark my digest dirty
 		markDigestDirty();
 		
-		onChange();
+		onConstraintChanged();
 	}
 	
 	
 	@Override
-	public abstract void onChange();
+	public abstract void onConstraintChanged();
 	
 	
 	@Override

src/mightypork/util/constraints/num/caching/NumCache.java

@@ -29,7 +29,7 @@ public class NumCache extends AbstractNumCache {
 	
 	@Override
 	@DefaultImpl
-	public void onChange()
+	public void onConstraintChanged()
 	{
 	}
 	

src/mightypork/util/constraints/rect/caching/AbstractRectCache.java

@@ -53,7 +53,7 @@ public abstract class AbstractRectCache extends RectAdapter implements Constrain
 		
 		markDigestDirty();
 		
-		onChange();
+		onConstraintChanged();
 	}
 	
 	

src/mightypork/util/constraints/rect/caching/RectCache.java

@@ -29,7 +29,7 @@ public class RectCache extends AbstractRectCache {
 	
 	@Override
 	@DefaultImpl
-	public void onChange()
+	public void onConstraintChanged()
 	{
 	}
 	

src/mightypork/util/constraints/vect/caching/AbstractVectCache.java

@@ -53,7 +53,7 @@ public abstract class AbstractVectCache extends VectAdapter implements Constrain
 		
 		markDigestDirty();
 		
-		onChange();
+		onConstraintChanged();
 	}
 	
 	

src/mightypork/util/constraints/vect/caching/VectCache.java

@@ -30,7 +30,7 @@ public class VectCache extends AbstractVectCache {
 	
 	@Override
 	@DefaultImpl
-	public void onChange()
+	public void onConstraintChanged()
 	{
 	}
 }