1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.mina.example.tennis;
21
22 import org.apache.mina.core.service.IoHandler;
23 import org.apache.mina.core.service.IoHandlerAdapter;
24 import org.apache.mina.core.session.IoSession;
25
26 /**
27 * A {@link IoHandler} implementation which plays a tennis game.
28 *
29 * @author The Apache MINA Project (dev@mina.apache.org)
30 * @version $Rev: 671827 $, $Date: 2008-06-26 10:49:48 +0200 (jeu, 26 jun 2008) $
31 */
32 public class TennisPlayer extends IoHandlerAdapter {
33 private static int nextId = 0;
34
35 /** Player ID **/
36 private final int id = nextId++;
37
38 @Override
39 public void sessionOpened(IoSession session) {
40 System.out.println("Player-" + id + ": READY");
41 }
42
43 @Override
44 public void sessionClosed(IoSession session) {
45 System.out.println("Player-" + id + ": QUIT");
46 }
47
48 @Override
49 public void messageReceived(IoSession session, Object message) {
50 System.out.println("Player-" + id + ": RCVD " + message);
51
52 TennisBall ball = (TennisBall) message;
53
54 // Stroke: TTL decreases and PING/PONG state changes.
55 ball = ball.stroke();
56
57 if (ball.getTTL() > 0) {
58 // If the ball is still alive, pass it back to peer.
59 session.write(ball);
60 } else {
61 // If the ball is dead, this player loses.
62 System.out.println("Player-" + id + ": LOSE");
63 session.close();
64 }
65 }
66
67 @Override
68 public void messageSent(IoSession session, Object message) {
69 System.out.println("Player-" + id + ": SENT " + message);
70 }
71
72 @Override
73 public void exceptionCaught(IoSession session, Throwable cause) {
74 cause.printStackTrace();
75 session.close();
76 }
77 }