world eventization & pause evt

src/mightypork/gamecore/eventbus/EventBus.java

@@ -91,7 +91,11 @@ final public class EventBus implements Destroyable, BusAccess {
 				}
 				
 				if (evt != null) {
-					dispatch(evt.getEvent());
+					try {
+						dispatch(evt.getEvent());
+					} catch (final Throwable t) {
+						Log.w(logMark + "Error while dispatching event: " + t);
+					}
 				}
 			}
 		}
@@ -137,6 +141,8 @@ final public class EventBus implements Destroyable, BusAccess {
 	/** Messages queued for delivery */
 	private final DelayQueue<DelayQueueEntry> sendQueue = new DelayQueue<>();
 	
+	private volatile boolean sendingDirect = false;
+	
 	
 	/**
 	 * Make a new bus and start it's queue thread.
@@ -335,9 +341,19 @@ final public class EventBus implements Destroyable, BusAccess {
 	{
 		assertLive();
 		
+		if (sendingDirect) {
+			Log.w("Cannot send a direct event in response to another.");
+			sendQueued(event);
+			return;
+		}
+		
+		sendingDirect = true;
+		
 		clients.setBuffering(true);
 		doDispatch(clients, event);
 		clients.setBuffering(false);
+		
+		sendingDirect = false;
 	}
 	
 	

src/mightypork/rogue/screens/game/ScreenGame.java

@@ -8,6 +8,7 @@ import mightypork.gamecore.gui.screens.LayeredScreen;
 import mightypork.gamecore.input.KeyStroke;
 import mightypork.gamecore.input.Keys;
 import mightypork.rogue.world.WorldProvider;
+import mightypork.rogue.world.events.WorldPauseRequest;
 
 
 public class ScreenGame extends LayeredScreen {
@@ -23,7 +24,7 @@ public class ScreenGame extends LayeredScreen {
 		addLayer(new HudLayer(this));
 		addLayer(new WorldLayer(this));
 		
-		bindKey(new KeyStroke(Keys.N), new Runnable() {
+		bindKey(new KeyStroke(Keys.L_CONTROL, Keys.N), new Runnable() {
 			
 			@Override
 			public void run()
@@ -31,6 +32,19 @@ public class ScreenGame extends LayeredScreen {
 				WorldProvider.get().createWorld(rand.nextLong());
 			}
 		});
+		
+		final Runnable pauseIt = new Runnable() {
+			
+			@Override
+			public void run()
+			{
+				getEventBus().send(new WorldPauseRequest());
+			}
+		};
+		
+		//pause key
+		bindKey(new KeyStroke(Keys.L_CONTROL, Keys.P), pauseIt);
+		bindKey(new KeyStroke(Keys.PAUSE), pauseIt);
 	}
 	
 	

src/mightypork/rogue/screens/game/WorldLayer.java

@@ -23,8 +23,8 @@ public class WorldLayer extends ScreenLayer {
 		worldView = new MapView();
 		
 		// map input plugins
-		worldView.addPlugin(new MIPKeyboard());
+		worldView.addPlugin(new MIPKeyboard(worldView));
-		worldView.addPlugin(new MIPMouse());
+		worldView.addPlugin(new MIPMouse(worldView));
 		
 		// size of lower navbar
 		final Num lownav = root.width().min(root.height()).max(700).perc(7);

src/mightypork/rogue/world/PlayerControl.java

@@ -18,6 +18,11 @@ public abstract class PlayerControl {
 	private World lastWorld;
 	
 	
+	/**
+	 * Implementing classes should return a world instance from this method.
+	 * 
+	 * @return
+	 */
 	protected abstract World provideWorld();
 	
 	
@@ -25,12 +30,6 @@ public abstract class PlayerControl {
 	{
 		final World newWorld = provideWorld();
 		
-		if (newWorld != lastWorld) {
-			for (final EntityMoveListener eml : playerMoveListeners) {
-				newWorld.getPlayerEntity().pos.addMoveListener(eml);
-			}
-		}
-		
 		lastWorld = newWorld;
 		
 		return newWorld;
@@ -77,15 +76,6 @@ public abstract class PlayerControl {
 	}
 	
 	
-	public void addMoveListener(EntityMoveListener eml)
-	{
-		playerMoveListeners.add(eml);
-		if (getPlayerEntity() != null) {
-			getPlayerEntity().pos.addMoveListener(eml);
-		}
-	}
-	
-	
 	public LevelAccess getLevel()
 	{
 		return getWorld().getCurrentLevel();
@@ -104,6 +94,12 @@ public abstract class PlayerControl {
 	}
 	
 	
+	/**
+	 * Click tile on player's side
+	 * 
+	 * @param side
+	 * @return
+	 */
 	public boolean clickTile(Step side)
 	{
 		return clickTile(getCoord().add(side));

src/mightypork/rogue/world/World.java

@@ -3,12 +3,15 @@ package mightypork.rogue.world;
 
 import java.io.IOException;
 import java.util.ArrayList;
+import java.util.Collection;
 
 import mightypork.gamecore.eventbus.BusAccess;
 import mightypork.gamecore.eventbus.EventBus;
-import mightypork.gamecore.eventbus.events.Updateable;
+import mightypork.gamecore.eventbus.clients.DelegatingClient;
 import mightypork.gamecore.util.ion.IonBundle;
 import mightypork.gamecore.util.ion.IonObjBundled;
+import mightypork.gamecore.util.math.algo.Coord;
+import mightypork.gamecore.util.math.timing.Pauseable;
 import mightypork.rogue.world.entity.Entities;
 import mightypork.rogue.world.entity.Entity;
 import mightypork.rogue.world.level.Level;
@@ -20,7 +23,7 @@ import mightypork.rogue.world.level.LevelAccess;
  * 
  * @author MightyPork
  */
-public class World implements BusAccess, IonObjBundled, Updateable {
+public class World implements DelegatingClient, BusAccess, IonObjBundled, Pauseable {
 	
 	private final ArrayList<Level> levels = new ArrayList<>();
 	
@@ -35,6 +38,23 @@ public class World implements BusAccess, IonObjBundled, Updateable {
 	/** Next entity ID */
 	private int eid;
 	
+	private boolean paused;
+	
+	
+	@SuppressWarnings({ "unchecked", "rawtypes" })
+	@Override
+	public Collection getChildClients()
+	{
+		return levels;
+	}
+	
+	
+	@Override
+	public boolean doesDelegate()
+	{
+		return !paused;
+	}
+	
 	
 	@Override
 	public void load(IonBundle in) throws IOException
@@ -74,13 +94,6 @@ public class World implements BusAccess, IonObjBundled, Updateable {
 	}
 	
 	
-	@Override
-	public void update(double delta)
-	{
-		getCurrentLevel().update(delta);
-	}
-	
-	
 	public void setSeed(long seed)
 	{
 		this.seed = seed;
@@ -117,8 +130,12 @@ public class World implements BusAccess, IonObjBundled, Updateable {
 		}
 		
 		playerEntity = Entities.PLAYER.createEntity(playerEid);
-		floor.addEntity(playerEntity, floor.getEnterPoint());
+		
-		floor.explore(playerEntity.getCoord());
+		final Coord spawn = floor.getEnterPoint();
+		
+		floor.forceFreeTile(spawn);
+		floor.addEntity(playerEntity, spawn);
+		floor.explore(spawn);
 		
 		playerInfo.setLevel(level);
 		playerInfo.setEID(playerEid);
@@ -155,4 +172,25 @@ public class World implements BusAccess, IonObjBundled, Updateable {
 		return bus.getEventBus();
 	}
 	
+	
+	@Override
+	public void pause()
+	{
+		paused = true;
+	}
+	
+	
+	@Override
+	public void resume()
+	{
+		paused = false;
+	}
+	
+	
+	@Override
+	public boolean isPaused()
+	{
+		return paused;
+	}
+	
 }

src/mightypork/rogue/world/WorldCreator.java

@@ -19,9 +19,9 @@ public class WorldCreator {
 			
 			final World w = new World();
 			w.setSeed(seed);
-						
+			
-			for(int i=0; i<7; i++) {
+			for (int i = 0; i < 7; i++) {
-				Level l = LevelGenerator.build(w, rand.nextLong(), i, LevelGenerator.DUNGEON_THEME);
+				final Level l = LevelGenerator.build(w, rand.nextLong(), i, LevelGenerator.DUNGEON_THEME);
 				w.addLevel(l);
 			}
 			

src/mightypork/rogue/world/entity/Entity.java

@@ -23,7 +23,7 @@ import mightypork.rogue.world.level.render.MapRenderContext;
 
 
 /**
- * World entity (mob or player)
+ * World entity (mob or player). Entities are attached to the event bus.
  * 
  * @author MightyPork
  */

src/mightypork/rogue/world/entity/entities/PlayerEntity.java

@@ -12,6 +12,7 @@ import mightypork.rogue.world.entity.modules.EntityMoveListener;
 import mightypork.rogue.world.entity.render.EntityRenderer;
 import mightypork.rogue.world.entity.render.EntityRendererMobLR;
 import mightypork.rogue.world.events.PlayerKilledEvent;
+import mightypork.rogue.world.events.PlayerStepEndEvent;
 
 
 public class PlayerEntity extends Entity {
@@ -32,12 +33,14 @@ public class PlayerEntity extends Entity {
 		public void onStepFinished()
 		{
 			entity.getLevel().explore(entity.pos.getCoord());
+			fireEvt();
 		}
 		
 		
 		@Override
 		public void onPathFinished()
 		{
+			fireEvt();
 		}
 		
 		
@@ -47,6 +50,12 @@ public class PlayerEntity extends Entity {
 		}
 		
 		
+		private void fireEvt()
+		{
+			getWorld().getEventBus().send(new PlayerStepEndEvent(PlayerEntity.this));
+		}
+		
+		
 		@Override
 		public boolean isModuleSaved()
 		{
@@ -86,7 +95,7 @@ public class PlayerEntity extends Entity {
 					}
 					
 					return super.getCost(from, to);
-				};
+				}
 			};
 		}
 		

src/mightypork/rogue/world/entity/modules/EntityModulePosition.java

@@ -184,6 +184,8 @@ public class EntityModulePosition extends EntityModule {
 	
 	/**
 	 * Add a move listener. If already present, do nothing.
+	 * 
+	 * @param listener the listener
 	 */
 	public void addMoveListener(EntityMoveListener listener)
 	{

src/mightypork/rogue/world/events/PlayerStepEndEvent.java

@@ -0,0 +1,28 @@
+package mightypork.rogue.world.events;
+
+
+import mightypork.gamecore.eventbus.BusEvent;
+import mightypork.gamecore.eventbus.event_flags.UnloggedEvent;
+import mightypork.rogue.world.entity.entities.PlayerEntity;
+
+
+@UnloggedEvent
+public class PlayerStepEndEvent extends BusEvent<PlayerStepEndListener> {
+	
+	private final PlayerEntity player;
+	
+	
+	public PlayerStepEndEvent(PlayerEntity player)
+	{
+		super();
+		this.player = player;
+	}
+	
+	
+	@Override
+	protected void handleBy(PlayerStepEndListener handler)
+	{
+		handler.onStepFinished(player);
+	}
+	
+}

src/mightypork/rogue/world/events/PlayerStepEndListener.java

@@ -0,0 +1,10 @@
+package mightypork.rogue.world.events;
+
+
+import mightypork.rogue.world.entity.entities.PlayerEntity;
+
+
+public interface PlayerStepEndListener {
+	
+	void onStepFinished(PlayerEntity player);
+}

src/mightypork/rogue/world/events/WorldPauseRequest.java

@@ -0,0 +1,27 @@
+package mightypork.rogue.world.events;
+
+
+import mightypork.gamecore.eventbus.BusEvent;
+import mightypork.rogue.world.World;
+
+
+/**
+ * Toggle world pause state
+ * 
+ * @author MightyPork
+ */
+public class WorldPauseRequest extends BusEvent<World> {
+	
+	
+	@Override
+	protected void handleBy(World handler)
+	{
+		// toggle paused state
+		if (!handler.isPaused()) {
+			handler.pause();
+		} else {
+			handler.resume();
+		}
+	}
+	
+}

src/mightypork/rogue/world/gen/LevelGenerator.java

@@ -23,7 +23,7 @@ public class LevelGenerator {
 	
 	public static Level build(World world, long seed, int complexity, MapTheme theme)
 	{
-		Log.f3("Generating level of complexity: "+complexity);
+		Log.f3("Generating level of complexity: " + complexity);
 		
 		final Random rand = new Random(seed + 13);
 		

src/mightypork/rogue/world/gui/MapView.java

@@ -1,9 +1,11 @@
 package mightypork.rogue.world.gui;
 
 
+import java.util.Collection;
 import java.util.LinkedHashSet;
 import java.util.Set;
 
+import mightypork.gamecore.eventbus.clients.DelegatingClient;
 import mightypork.gamecore.eventbus.events.Updateable;
 import mightypork.gamecore.gui.components.InputComponent;
 import mightypork.gamecore.input.Keys;
@@ -19,7 +21,6 @@ import mightypork.gamecore.util.math.constraints.vect.Vect;
 import mightypork.rogue.world.PlayerControl;
 import mightypork.rogue.world.WorldProvider;
 import mightypork.rogue.world.WorldRenderer;
-import mightypork.rogue.world.entity.modules.EntityMoveListener;
 import mightypork.rogue.world.gui.interaction.MapInteractionPlugin;
 
 
@@ -28,10 +29,10 @@ import mightypork.rogue.world.gui.interaction.MapInteractionPlugin;
  * 
  * @author MightyPork
  */
-public class MapView extends InputComponent implements KeyListener, MouseButtonListener, EntityMoveListener, Updateable {
+public class MapView extends InputComponent implements DelegatingClient, KeyListener, MouseButtonListener, Updateable {
 	
 	protected final WorldRenderer worldRenderer;
-	private final PlayerControl pc;
+	public final PlayerControl playerControl;
 	
 	private final Set<MapInteractionPlugin> plugins = new LinkedHashSet<>();
 	private final NumAnimated zoom = new NumAnimated(0, Easing.SINE_BOTH);
@@ -40,12 +41,26 @@ public class MapView extends InputComponent implements KeyListener, MouseButtonL
 	private final Num tileSize;
 	
 	
+	@SuppressWarnings({ "unchecked", "rawtypes" })
+	@Override
+	public Collection getChildClients()
+	{
+		return plugins;
+	}
+	
+	
+	@Override
+	public boolean doesDelegate()
+	{
+		return true;
+	}
+	
+	
 	public MapView()
 	{
 		this.tileSize = height().min(width()).div(10).max(32).mul(Num.make(1).sub(zoom.mul(0.5)));
 		this.worldRenderer = new WorldRenderer(this, tileSize);
-		pc = WorldProvider.get().getPlayerControl();
+		playerControl = WorldProvider.get().getPlayerControl();
-		pc.addMoveListener(this);
 		
 		zoom.setDefaultDuration(0.5);
 	}
@@ -70,40 +85,13 @@ public class MapView extends InputComponent implements KeyListener, MouseButtonL
 	}
 	
 	
-	@Override
-	public void onStepFinished()
-	{
-		for (final MapInteractionPlugin p : plugins) {
-			if (p.onStepEnd(this, pc)) break;
-		}
-	}
-	
-	
-	@Override
-	public void onPathFinished()
-	{
-		for (final MapInteractionPlugin p : plugins) {
-			if (p.onStepEnd(this, pc)) break;
-		}
-	}
-	
-	
-	@Override
-	public void onPathInterrupted()
-	{
-		for (final MapInteractionPlugin p : plugins) {
-			if (p.onStepEnd(this, pc)) break;
-		}
-	}
-	
-	
 	@Override
 	public void receive(MouseButtonEvent event)
 	{
 		if (!event.isOver(this)) return;
 		
 		for (final MapInteractionPlugin p : plugins) {
-			if (p.onClick(this, pc, event.getPos(), event.getButton(), event.isDown())) {
+			if (p.onClick(event.getPos(), event.getButton(), event.isDown())) {
 				event.consume();
 				break;
 			}
@@ -127,7 +115,7 @@ public class MapView extends InputComponent implements KeyListener, MouseButtonL
 	public void receive(KeyEvent event)
 	{
 		for (final MapInteractionPlugin p : plugins) {
-			if (p.onKey(this, pc, event.getKey(), event.isDown())) break;
+			if (p.onKey(event.getKey(), event.isDown())) break;
 		}
 		
 		if (event.getKey() == Keys.Z && event.isDown()) {
@@ -158,9 +146,6 @@ public class MapView extends InputComponent implements KeyListener, MouseButtonL
 	@Override
 	public void update(double delta)
 	{
-		for (final MapInteractionPlugin p : plugins) {
-			p.update(this, pc, delta);
-		}
 		zoom.update(delta);
 	}
 }

src/mightypork/rogue/world/gui/interaction/MIPKeyboard.java

@@ -6,38 +6,44 @@ import mightypork.gamecore.input.Keys;
 import mightypork.gamecore.util.math.algo.Sides;
 import mightypork.gamecore.util.math.algo.Step;
 import mightypork.gamecore.util.math.constraints.vect.Vect;
-import mightypork.rogue.world.PlayerControl;
+import mightypork.rogue.world.entity.entities.PlayerEntity;
 import mightypork.rogue.world.gui.MapView;
 
 
-public class MIPKeyboard implements MapInteractionPlugin {
+public class MIPKeyboard extends MapInteractionPlugin {
 	
 	private static final int[] keys = { Keys.LEFT, Keys.RIGHT, Keys.UP, Keys.DOWN };
 	private static final Step[] sides = { Sides.W, Sides.E, Sides.N, Sides.S };
 	
 	
+	public MIPKeyboard(MapView mapView)
+	{
+		super(mapView);
+	}
+	
+	
 	@Override
-	public boolean onStepEnd(MapView view, PlayerControl player)
+	public void onStepFinished(PlayerEntity player)
 	{
-		return walkByKey(player);
+		walkByKey();
 	}
 	
 	
 	@Override
-	public boolean onClick(MapView view, PlayerControl player, Vect mouse, int button, boolean down)
+	public boolean onClick(Vect mouse, int button, boolean down)
 	{
 		return false;
 	}
 	
 	
 	@Override
-	public boolean onKey(MapView view, PlayerControl player, int key, boolean down)
+	public boolean onKey(int key, boolean down)
 	{
 		if (down) return false; // not interested
 		
 		for (int i = 0; i < 4; i++) {
 			if (key == keys[i]) {
-				return player.clickTile(sides[i]);
+				return mapView.playerControl.clickTile(sides[i]);
 			}
 		}
 		
@@ -45,16 +51,16 @@ public class MIPKeyboard implements MapInteractionPlugin {
 	}
 	
 	
-	private boolean walkByKey(PlayerControl pc)
+	private boolean walkByKey()
 	{
-		if (pc.getPlayerEntity().pos.isMoving()) return false;
+		if (mapView.playerControl.getPlayerEntity().pos.isMoving()) return false;
 		
 		for (int i = 0; i < 4; i++) {
 			if (InputSystem.isKeyDown(keys[i])) {
 				
 				final Step side = sides[i];
-				if (pc.canGo(side)) {
+				if (mapView.playerControl.canGo(side)) {
-					pc.go(side);
+					mapView.playerControl.go(side);
 					return true;
 				} else {
 					return false;
@@ -66,8 +72,8 @@ public class MIPKeyboard implements MapInteractionPlugin {
 	
 	
 	@Override
-	public void update(MapView mapView, PlayerControl pc, double delta)
+	public void update(double delta)
 	{
-		walkByKey(pc);
+		walkByKey();
 	}
 }

src/mightypork/rogue/world/gui/interaction/MIPMouse.java

@@ -8,66 +8,72 @@ import mightypork.gamecore.util.math.Polar;
 import mightypork.gamecore.util.math.algo.Coord;
 import mightypork.gamecore.util.math.algo.Sides;
 import mightypork.gamecore.util.math.constraints.vect.Vect;
-import mightypork.rogue.world.PlayerControl;
+import mightypork.rogue.world.entity.entities.PlayerEntity;
 import mightypork.rogue.world.gui.MapView;
 import mightypork.rogue.world.tile.Tile;
 
 
-public class MIPMouse implements MapInteractionPlugin {
+public class MIPMouse extends MapInteractionPlugin {
 	
 	private static final int BTN = 0; // left
 	
 	
+	public MIPMouse(MapView mapView)
+	{
+		super(mapView);
+	}
+	
+	
 	@Override
-	public void update(MapView view, PlayerControl pc, double delta)
+	public void update(double delta)
 	{
 		if (!InputSystem.isKeyDown(Keys.L_SHIFT)) return;
 		
 		final Vect pos = InputSystem.getMousePos();
 		
 		if (InputSystem.isMouseButtonDown(BTN)) {
-			if (mouseWalk(view, pc, pos)) return;
+			if (mouseWalk(pos)) return;
-			if (troToNav(view, pc, pos)) return;
+			if (troToNav(pos)) return;
 		}
 	}
 	
 	
 	@Override
-	public boolean onClick(MapView view, PlayerControl pc, Vect mouse, int button, boolean down)
+	public boolean onClick(Vect mouse, int button, boolean down)
 	{
 		if (button != BTN) return false;
-		final Coord pos = view.toWorldPos(mouse);
+		final Coord pos = mapView.toWorldPos(mouse);
-		final Tile t = pc.getLevel().getTile(pos);
+		final Tile t = mapView.playerControl.getLevel().getTile(pos);
 		
 		if (t.onClick()) return true;
 		
 		if (!down && t.isWalkable()) {
-			if (troToNav(view, pc, mouse)) return true;
+			if (troToNav(mouse)) return true;
-			return mouseWalk(view, pc, mouse);
+			return mouseWalk(mouse);
 		}
 		
 		return false;
 	}
 	
 	
-	private boolean troToNav(MapView view, PlayerControl pc, Vect mouse)
+	private boolean troToNav(Vect mouse)
 	{
-		final Coord plpos = pc.getCoord();
+		final Coord plpos = mapView.playerControl.getCoord();
-		final Coord clicked = view.toWorldPos(mouse);
+		final Coord clicked = mapView.toWorldPos(mouse);
 		if (clicked.equals(plpos)) return false;
 		
-		final Tile t = pc.getLevel().getTile(clicked);
+		final Tile t = mapView.playerControl.getLevel().getTile(clicked);
 		if (!t.isWalkable() || !t.isExplored()) return false;
 		
-		pc.navigateTo(clicked);
+		mapView.playerControl.navigateTo(clicked);
 		return true;
 	}
 	
 	
-	private boolean mouseWalk(MapView view, PlayerControl pc, Vect pos)
+	private boolean mouseWalk(Vect pos)
 	{
-		final Coord plpos = pc.getCoord();
+		final Coord plpos = mapView.playerControl.getCoord();
-		final Coord clicked = view.toWorldPos(pos);
+		final Coord clicked = mapView.toWorldPos(pos);
 		if (clicked.equals(plpos)) return false;
 		
 		final Polar p = Polar.fromCoord(clicked.x - plpos.x, clicked.y - plpos.y);
@@ -76,16 +82,16 @@ public class MIPMouse implements MapInteractionPlugin {
 		
 		switch (dir) {
 			case 0:
-				return pc.tryGo(Sides.E);
+				return mapView.playerControl.tryGo(Sides.E);
 				
 			case 1:
-				return pc.tryGo(Sides.S);
+				return mapView.playerControl.tryGo(Sides.S);
 				
 			case 2:
-				return pc.tryGo(Sides.W);
+				return mapView.playerControl.tryGo(Sides.W);
 				
 			case 3:
-				return pc.tryGo(Sides.N);
+				return mapView.playerControl.tryGo(Sides.N);
 		}
 		
 		return false;
@@ -93,25 +99,23 @@ public class MIPMouse implements MapInteractionPlugin {
 	
 	
 	@Override
-	public boolean onKey(MapView view, PlayerControl player, int key, boolean down)
+	public boolean onKey(int key, boolean down)
 	{
 		return false;
 	}
 	
 	
 	@Override
-	public boolean onStepEnd(MapView view, PlayerControl pc)
+	public void onStepFinished(PlayerEntity player)
 	{
-		if (!InputSystem.isKeyDown(Keys.L_SHIFT)) return false;
+		if (!InputSystem.isKeyDown(Keys.L_SHIFT)) return;
 		
 		final Vect pos = InputSystem.getMousePos();
 		
 		if (InputSystem.isMouseButtonDown(BTN)) {
-			if (mouseWalk(view, pc, pos)) return true;
+			if (mouseWalk(pos)) return;
-			if (troToNav(view, pc, pos)) return true;
+			if (troToNav(pos)) return;
 		}
-		
-		return false;
 	}
 	
 }

src/mightypork/rogue/world/gui/interaction/MapInteractionPlugin.java

@@ -1,22 +1,31 @@
 package mightypork.rogue.world.gui.interaction;
 
 
+import mightypork.gamecore.eventbus.events.Updateable;
 import mightypork.gamecore.util.math.constraints.vect.Vect;
-import mightypork.rogue.world.PlayerControl;
+import mightypork.rogue.world.events.PlayerStepEndListener;
 import mightypork.rogue.world.gui.MapView;
 
 
-public interface MapInteractionPlugin {
+public abstract class MapInteractionPlugin implements Updateable, PlayerStepEndListener {
 	
-	boolean onStepEnd(MapView mapView, PlayerControl player);
+	protected final MapView mapView;
 	
 	
-	boolean onClick(MapView mapView, PlayerControl player, Vect mouse, int button, boolean down);
+	public MapInteractionPlugin(MapView mapView)
+	{
+		super();
+		this.mapView = mapView;
+	}
 	
 	
-	boolean onKey(MapView mapView, PlayerControl player, int key, boolean down);
+	public abstract boolean onClick(Vect mouse, int button, boolean down);
 	
 	
-	void update(MapView mapView, PlayerControl pc, double delta);
+	public abstract boolean onKey(int key, boolean down);
+	
+	
+	@Override
+	public abstract void update(double delta);
 	
 }

src/mightypork/rogue/world/level/Level.java

@@ -6,6 +6,8 @@ import java.util.*;
 
 import mightypork.gamecore.eventbus.BusAccess;
 import mightypork.gamecore.eventbus.EventBus;
+import mightypork.gamecore.eventbus.clients.DelegatingClient;
+import mightypork.gamecore.eventbus.clients.ToggleableClient;
 import mightypork.gamecore.logging.Log;
 import mightypork.gamecore.util.ion.IonBundle;
 import mightypork.gamecore.util.ion.IonInput;
@@ -21,6 +23,7 @@ import mightypork.rogue.world.World;
 import mightypork.rogue.world.entity.Entities;
 import mightypork.rogue.world.entity.Entity;
 import mightypork.rogue.world.entity.EntityType;
+import mightypork.rogue.world.entity.entities.PlayerEntity;
 import mightypork.rogue.world.tile.Tile;
 import mightypork.rogue.world.tile.TileModel;
 import mightypork.rogue.world.tile.Tiles;
@@ -31,7 +34,7 @@ import mightypork.rogue.world.tile.Tiles;
  * 
  * @author MightyPork
  */
-public class Level implements BusAccess, LevelAccess, IonObjBinary {
+public class Level implements BusAccess, DelegatingClient, ToggleableClient, LevelAccess, IonObjBinary {
 	
 	public static final int ION_MARK = 53;
 	
@@ -46,6 +49,8 @@ public class Level implements BusAccess, LevelAccess, IonObjBinary {
 	private final Map<Integer, Entity> entityMap = new HashMap<>();
 	private final Set<Entity> entitySet = new HashSet<>();
 	
+	private int playerCount = 0;
+	
 	/** Level seed (used for generation and tile variation) */
 	public long seed;
 	
@@ -201,14 +206,13 @@ public class Level implements BusAccess, LevelAccess, IonObjBinary {
 		// just update them all
 		for (final Coord c = Coord.zero(); c.x < size.x; c.x++) {
 			for (c.y = 0; c.y < size.y; c.y++) {
-				getTile(c).update(delta);
+				getTile(c).updateTile(delta);
 			}
 		}
 		
 		final List<Entity> toRemove = new ArrayList<>();
 		
 		for (final Entity e : entitySet) {
-			e.update(delta);
 			if (e.isDead() && e.canRemoveCorpse()) toRemove.add(e);
 		}
 		
@@ -249,6 +253,7 @@ public class Level implements BusAccess, LevelAccess, IonObjBinary {
 		
 		entityMap.put(entity.getEntityId(), entity);
 		entitySet.add(entity);
+		if (entity instanceof PlayerEntity) playerCount++;
 		
 		// join to level & world
 		entity.setLevel(this);
@@ -271,6 +276,8 @@ public class Level implements BusAccess, LevelAccess, IonObjBinary {
 	public void removeEntity(int eid)
 	{
 		final Entity removed = entityMap.remove(eid);
+		if (removed == null) throw new NullPointerException("No such entity in level: " + eid);
+		if (removed instanceof PlayerEntity) playerCount--;
 		entitySet.remove(removed);
 		freeTile(removed.getCoord());
 	}
@@ -462,4 +469,26 @@ public class Level implements BusAccess, LevelAccess, IonObjBinary {
 	{
 		return world.getEventBus();
 	}
+	
+	
+	@Override
+	public boolean isListening()
+	{
+		return playerCount > 0;
+	}
+	
+	
+	@SuppressWarnings({ "unchecked", "rawtypes" })
+	@Override
+	public Collection getChildClients()
+	{
+		return entitySet;
+	}
+	
+	
+	@Override
+	public boolean doesDelegate()
+	{
+		return isListening();
+	}
 }

src/mightypork/rogue/world/tile/Tile.java

@@ -56,14 +56,7 @@ public abstract class Tile implements IonObjBlob {
 	{
 		if (!isExplored()) return;
 		
-		if (renderer == null) {
+		initRenderer();
-			renderer = makeRenderer();
-		}
-		
-		if (renderer == null) {
-			Log.w("No renderer for tile " + Log.str(this));
-			return;
-		}
 		
 		renderer.renderTile(context);
 		
@@ -73,6 +66,20 @@ public abstract class Tile implements IonObjBlob {
 	}
 	
 	
+	private void initRenderer()
+	{
+		if (renderer == null) {
+			renderer = makeRenderer();
+			
+			if (renderer == /*still*/null) {
+				Log.w("No renderer for tile " + Log.str(this));
+				renderer = TileRenderer.NONE;
+				return;
+			}
+		}
+	}
+	
+	
 	protected abstract TileRenderer makeRenderer();
 	
 	
@@ -151,9 +158,10 @@ public abstract class Tile implements IonObjBlob {
 	
 	
 	@DefaultImpl
-	public void update(double delta)
+	public void updateTile(double delta)
 	{
-		makeRenderer().update(delta);
+		initRenderer();
+		renderer.update(delta);
 	}
 	
 	

src/mightypork/rogue/world/tile/tiles/NullTile.java

@@ -25,7 +25,7 @@ public class NullTile extends Tile {
 	
 	
 	@Override
-	public void update(double delta)
+	public void updateTile(double delta)
 	{
 	}
 	

src/mightypork/rogue/world/tile/tiles/TileWithItems.java

@@ -37,9 +37,9 @@ public abstract class TileWithItems extends Tile {
 	
 	
 	@Override
-	public void update(double delta)
+	public void updateTile(double delta)
 	{
-		super.update(delta);
+		super.updateTile(delta);
 		itemRenderer.update(delta);
 	}