Fixed issue with build.

Changed MainGame to create a thread instead of a client and used the client as input for the thread
Changed client to extend Controller instead of thread

core/src/netwerkprog/game/client/Client.java

@@ -14,10 +14,7 @@ public class Client extends Controller {
     private String hostname;
     private boolean isConnected = true;
 
-    @Override
-    public void run() {
-        this.connect();
-    }
+
 
     public Client(String hostname, int port) {
         this.port = port;
@@ -74,4 +71,9 @@ public class Client extends Controller {
             }
         }
     }
+
+    @Override
+    public void run() {
+        this.connect();
+    }
 }