More refactoring; created Net class for multiplayer in the future

core/src/io/anuke/mindustry/Net.java

@@ -0,0 +1,60 @@
+package io.anuke.mindustry;
+
+import java.io.IOException;
+
+import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.utils.ObjectMap;
+
+import io.anuke.ucore.function.Consumer;
+
+//TODO stub
+public class Net{
+	private static boolean server;
+	private static boolean active;
+	private static ObjectMap<Class<?>, Consumer<?>> listeners = new ObjectMap<>();
+	private static NetProvider provider;
+	
+	/**Connect to an address.*/
+	public static void connect(String ip, String port) throws IOException{
+		provider.connect(ip, port);
+	}
+	
+	/**Send an object to all connected clients.*/
+	public static void send(Object object){
+		provider.send(object);
+	}
+	
+	/**Sets the net provider, e.g. what handles sending, recieving and connecting.*/
+	public static void setProvider(NetProvider provider){
+		Net.provider = provider;
+	}
+	
+	/**Registers a listener for when an object is recieved.*/
+	public static <T> void handle(Class<T> type, Consumer<T> listener){
+		listeners.put(type, listener);
+	}
+	
+	/**Call to handle a packet being recieved.*/
+	public static void handleNetReceived(Object object){
+		if(listeners.get(object.getClass()) != null){
+			
+		}else{
+			Gdx.app.error("Net", "Unhandled packet type: '" + object.getClass() + "'!");
+		}
+	}
+	
+	/**Whether the net is active, e.g. whether this is a multiplayer game.*/
+	public static boolean active(){
+		return active;
+	}
+	
+	/**Whether this is a server or not.*/
+	public static boolean server(){
+		return server;
+	}
+	
+	public static interface NetProvider{
+		public void connect(String ip, String port) throws IOException;
+		public void send(Object object);
+	}
+}