Hook up the basic ES and networking support. Yep, that's it.

Just that easy.

sim-eth-es/src/main/java/example/GameConstants.java

@@ -61,6 +61,12 @@ public class GameConstants {
      *  avoids tying up the main connection.
      */
     public static final int CHAT_CHANNEL = 0;
+
+    /**
+     *  Send entity-related messages over a separate channel to avoid 
+     *  clogging up the main channels.
+     */
+    public static final int ES_CHANNEL = 1; 
 
     public static final int GRID_CELL_SIZE = 32;
 

sim-eth-es/src/main/java/example/net/client/GameClient.java

@@ -49,6 +49,9 @@
 import com.simsilica.ethereal.EtherealClient;
 import com.simsilica.ethereal.TimeSource;
 
+import com.simsilica.es.EntityData;
+import com.simsilica.es.client.EntityDataClientService;
+
 import example.GameConstants;
 import example.net.chat.client.ChatClientService;
 
@@ -62,6 +65,7 @@ public class GameClient {
     static Logger log = LoggerFactory.getLogger(GameClient.class);
 
     private Client client;
+    private EntityData ed;
 
     public GameClient( String host, int port ) throws IOException {
         log.info("Connecting to:" + host + " " + port);
@@ -74,11 +78,16 @@ public GameClient( String host, int port ) throws IOException {
                                          new RmiClientService(),
                                          new AccountClientService(),
                                          new GameSessionClientService(),
+                                         new EntityDataClientService(GameConstants.ES_CHANNEL),
                                          new ChatClientService(GameConstants.CHAT_CHANNEL),
                                          new EtherealClient(GameConstants.OBJECT_PROTOCOL,
                                                             GameConstants.ZONE_GRID,
                                                             GameConstants.ZONE_RADIUS)                                         
                                          );
+
+        // Can grab this even before started but you won't be able to retrieve
+        // entities until the connection has been fully setup.
+        this.ed = client.getServices().getService(EntityDataClientService.class).getEntityData();                                         
     }
 
     public TimeSource getTimeSource() {
@@ -89,6 +98,10 @@ public Client getClient() {
         return client;
     }
 
+    public EntityData getEntityData() {
+        return ed;
+    }
+
     public void start() {
         log.info("start()");
         client.start();

sim-eth-es/src/main/java/example/net/server/GameServer.java

@@ -49,6 +49,11 @@
 import com.simsilica.ethereal.EtherealHost;
 import com.simsilica.ethereal.NetworkStateListener;
 
+import com.simsilica.es.EntityData;
+import com.simsilica.es.base.DefaultEntityData;
+import com.simsilica.es.server.EntityDataHostedService;
+import com.simsilica.es.server.EntityUpdater; // from SiO2
+
 import com.simsilica.sim.GameLoop;
 import com.simsilica.sim.GameSystemManager;
 
@@ -87,6 +92,9 @@ public GameServer( int port, String description ) throws IOException {
         // Create a separate channel to do chat stuff so it doesn't interfere
         // with any real game stuff.
         server.addChannel(port + 1);
+
+        // And a separate channel for ES stuff
+        server.addChannel(port + 2);
 
         server.getServices().addServices(new RpcHostedService(),
                                          new RmiHostedService(),
@@ -111,6 +119,13 @@ public GameServer( int port, String description ) throws IOException {
         // Add a system that will forward physics changes to the Ethereal 
         // zone manager       
         systems.addSystem(new ZoneNetworkSystem(ethereal.getZones()));
+
+        // Setup our entity data and the hosting service
+        DefaultEntityData ed = new DefaultEntityData();
+        server.getServices().addService(new EntityDataHostedService(GameConstants.ES_CHANNEL, ed));
+
+        // Add it to the game systems so that we send updates properly
+        systems.addSystem(new EntityUpdater(server.getServices().getService(EntityDataHostedService.class)));
 
         log.info("Initializing game systems...");
         // Initialize the game system manager to prepare to start later