Android Open Source - clash_of_balls Network Server

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From Project

Back to project page clash_of_balls.

License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * Copyright (C) 2012-2013 Hans Hardmeier <hanshardmeier@gmail.com>
 * Copyright (C) 2012-2013 Andrin Jenal//from   w  ww . jav a  2 s . co m
 * Copyright (C) 2012-2013 Beat Kng <beat-kueng@gmx.net>
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 3 of the License.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */
package com.sapos_aplastados.game.clash_of_balls.network;

import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;

import org.alljoyn.bus.BusException;

import android.util.Log;

import com.sapos_aplastados.game.clash_of_balls.game.Vector;
import com.sapos_aplastados.game.clash_of_balls.game.event.Event;
import com.sapos_aplastados.game.clash_of_balls.network.Networking.ConnectedClient;
import com.sapos_aplastados.game.clash_of_balls.network.Networking.NetworkData;

/**
 * this class handles all server-side networking stuff
 * - list of connected clients
 * - start/stop advertise (open a new game)
 * - send events to clients
 * - receive sensor updates
 *
 */
public class NetworkServer {
  private static final String TAG = "NetworkServer";
  
  private final ByteArrayOutputStream m_outgoing_byte_stream
      = new ByteArrayOutputStream();
  private final DataOutputStream m_outgoing_stream
      = new DataOutputStream(m_outgoing_byte_stream);

  private final Networking m_networking;
  
  public NetworkServer(Networking networking) {
    m_networking = networking;
  }
  
  public ConnectedClient getConnectedClient(int idx) 
    { return m_networking.connectedClient(idx); }
  public int getConnectedClientCount() { return m_networking.connectedClientCount(); }
  
  public void setOwnName(String name) {
    m_networking.setServerName(name);
  }
  public void setMaxClientCount(int max_count) {
    m_networking.setMaxClientCount(max_count);
  }
  public void joinSessionToSelf() {
    m_networking.joinSessionToSelf();
  }
  //open a game
  public void startAdvertise() {
    m_networking.startAdvertise();
  }
  public void stopAdvertise() {
    m_networking.stopAdvertise();
  }
  
  //send events to clients
  public void addOutgoingEvent(Event e) {
    try {
      e.write(m_outgoing_stream);
    } catch (IOException e1) {
      Log.e(TAG, "Failed to write output stream");
    }
  }
  
  public void sendEvents() throws BusException {
    try {
      m_outgoing_stream.flush();
      if(m_outgoing_byte_stream.size() > 0) {
        m_networking.sendGameCommand(m_outgoing_byte_stream.toByteArray());
        m_outgoing_byte_stream.reset();
      }
      
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
  
  
  //call this regularly to handle incoming network data
  public void handleReceive() {
    //nothing to do
  }
  
  //receive sensor updates
  //will return player id or -1 if no update
  public short getSensorUpdate(Vector pos_out) {
    NetworkData d=m_networking.receiveSensorUpdate();
    if(d!=null) {
      pos_out.set(d.pos_x, d.pos_y);
      return getClientId(d.sender);
    }
    return (short)-1;
  }
  
  public short getClientId(String unique_id) {
    short ret=-1;
    if(unique_id != null) {
      for(int i=0; i<m_networking.connectedClientCount(); ++i) {
        ConnectedClient client = m_networking.connectedClient(i);
        if(client!=null && client.unique_id.equals(unique_id))
          return client.id;
      }
      Log.w(TAG, "Received data but cannot find associated client id (unique_id = "
          +unique_id+", client_count="+m_networking.connectedClientCount()+")!");
    } else {
      Log.w(TAG, "Received data: sender String is NULL!");
    }
    return ret;
  }
  
  public String getClientUniqueName(short client_id) {
    for(int i=0; i<m_networking.connectedClientCount(); ++i) {
      ConnectedClient client = m_networking.connectedClient(i);
      if(client!=null && client.id == client_id)
        return client.unique_id;
    }
    return "";
  }
  
}

Java Source Code List

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