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<h1 class="title">pingpong.cpp Example File</h1>
<span class="subtitle">pingpong/pingpong.cpp</span>
<!-- $$$pingpong/pingpong.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">
<span class="comment">/***************************************************************************
**
** Copyright (C) 2014 BlackBerry Limited. All rights reserved.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the QtBluetooth module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include "pingpong.h"</span>
<span class="preprocessor">#include <QDebug></span>
<span class="preprocessor">#ifdef Q_OS_ANDROID</span>
<span class="preprocessor">#include <QtAndroid></span>
<span class="preprocessor">#endif</span>
PingPong<span class="operator">::</span>PingPong():
m_serverInfo(<span class="number">0</span>)<span class="operator">,</span> socket(<span class="number">0</span>)<span class="operator">,</span> discoveryAgent(<span class="number">0</span>)<span class="operator">,</span> interval(<span class="number">5</span>)<span class="operator">,</span> m_resultLeft(<span class="number">0</span>)<span class="operator">,</span> m_resultRight(<span class="number">0</span>)<span class="operator">,</span>
m_showDialog(<span class="keyword">false</span>)<span class="operator">,</span> m_role(<span class="number">0</span>)<span class="operator">,</span> m_proportionX(<span class="number">0</span>)<span class="operator">,</span> m_proportionY(<span class="number">0</span>)<span class="operator">,</span> m_serviceFound(<span class="keyword">false</span>)
{
m_timer <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QTimer</span>(<span class="keyword">this</span>);
connect(m_timer<span class="operator">,</span> <span class="operator">&</span><span class="type">QTimer</span><span class="operator">::</span>timeout<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>PingPong<span class="operator">::</span>update);
}
PingPong<span class="operator">::</span><span class="operator">~</span>PingPong()
{
<span class="keyword">delete</span> m_timer;
<span class="keyword">delete</span> m_serverInfo;
<span class="keyword">delete</span> socket;
<span class="keyword">delete</span> discoveryAgent;
}
<span class="type">void</span> PingPong<span class="operator">::</span>startGame()
{
m_showDialog <span class="operator">=</span> <span class="keyword">false</span>;
<span class="keyword">emit</span> showDialogChanged();
<span class="keyword">if</span> (m_role <span class="operator">=</span><span class="operator">=</span> <span class="number">1</span>)
updateDirection();
m_timer<span class="operator">-</span><span class="operator">></span>start(<span class="number">50</span>);
}
<span class="type">void</span> PingPong<span class="operator">::</span>update()
{
<span class="type">QByteArray</span> size;
<span class="comment">// Server is only updating the coordinates</span>
<span class="keyword">if</span> (m_role <span class="operator">=</span><span class="operator">=</span> <span class="number">1</span>) {
checkBoundaries();
m_ballPreviousX <span class="operator">=</span> m_ballX;
m_ballPreviousY <span class="operator">=</span> m_ballY;
m_ballY <span class="operator">=</span> m_direction<span class="operator">*</span>(m_ballX<span class="operator">+</span>interval) <span class="operator">-</span> m_direction<span class="operator">*</span>m_ballX <span class="operator">+</span> m_ballY;
m_ballX <span class="operator">=</span> m_ballX <span class="operator">+</span> interval;
size<span class="operator">.</span>setNum(m_ballX);
size<span class="operator">.</span>append(<span class="char">' '</span>);
<span class="type">QByteArray</span> size1;
size1<span class="operator">.</span>setNum(m_ballY);
size<span class="operator">.</span>append(size1);
size<span class="operator">.</span>append(<span class="char">' '</span>);
size1<span class="operator">.</span>setNum(m_leftBlockY);
size<span class="operator">.</span>append(size1);
size<span class="operator">.</span>append(<span class="string">" \n"</span>);
socket<span class="operator">-</span><span class="operator">></span>write(size<span class="operator">.</span>constData());
<span class="keyword">emit</span> ballChanged();
}
<span class="keyword">else</span> <span class="keyword">if</span> (m_role <span class="operator">=</span><span class="operator">=</span> <span class="number">2</span>) {
size<span class="operator">.</span>setNum(m_rightBlockY);
size<span class="operator">.</span>append(<span class="string">" \n"</span>);
socket<span class="operator">-</span><span class="operator">></span>write(size<span class="operator">.</span>constData());
}
}
<span class="type">void</span> PingPong<span class="operator">::</span>setSize(<span class="keyword">const</span> <span class="type">float</span> <span class="operator">&</span>x<span class="operator">,</span> <span class="keyword">const</span> <span class="type">float</span> <span class="operator">&</span>y)
{
m_boardWidth <span class="operator">=</span> x;
m_boardHeight <span class="operator">=</span> y;
m_targetX <span class="operator">=</span> m_boardWidth;
m_targetY <span class="operator">=</span> m_boardHeight<span class="operator">/</span><span class="number">2</span>;
m_ballPreviousX <span class="operator">=</span> m_ballX <span class="operator">=</span> m_boardWidth<span class="operator">/</span><span class="number">2</span>;
m_ballPreviousY <span class="operator">=</span> m_ballY <span class="operator">=</span> m_boardHeight <span class="operator">-</span> m_boardWidth<span class="operator">/</span><span class="number">54</span>;
<span class="keyword">emit</span> ballChanged();
}
<span class="type">void</span> PingPong<span class="operator">::</span>updateBall(<span class="keyword">const</span> <span class="type">float</span> <span class="operator">&</span>bX<span class="operator">,</span> <span class="keyword">const</span> <span class="type">float</span> <span class="operator">&</span>bY)
{
m_ballX <span class="operator">=</span> bX;
m_ballY <span class="operator">=</span> bY;
}
<span class="type">void</span> PingPong<span class="operator">::</span>updateLeftBlock(<span class="keyword">const</span> <span class="type">float</span> <span class="operator">&</span>lY)
{
m_leftBlockY <span class="operator">=</span> lY;
}
<span class="type">void</span> PingPong<span class="operator">::</span>updateRightBlock(<span class="keyword">const</span> <span class="type">float</span> <span class="operator">&</span>rY)
{
m_rightBlockY <span class="operator">=</span> rY;
}
<span class="type">void</span> PingPong<span class="operator">::</span>checkBoundaries()
{
<span class="type">float</span> ballWidth <span class="operator">=</span> m_boardWidth<span class="operator">/</span><span class="number">54</span>;
<span class="type">float</span> blockSize <span class="operator">=</span> m_boardWidth<span class="operator">/</span><span class="number">27</span>;
<span class="type">float</span> blockHeight <span class="operator">=</span> m_boardHeight<span class="operator">/</span><span class="number">5</span>;
<span class="keyword">if</span> (((m_ballX <span class="operator">+</span> ballWidth) <span class="operator">></span> (m_boardWidth <span class="operator">-</span> blockSize)) <span class="operator">&</span><span class="operator">&</span> ((m_ballY <span class="operator">+</span> ballWidth) <span class="operator"><</span> (m_rightBlockY <span class="operator">+</span> blockHeight))
<span class="operator">&</span><span class="operator">&</span> (m_ballY <span class="operator">></span> m_rightBlockY)) {
m_targetY <span class="operator">=</span> <span class="number">2</span> <span class="operator">*</span> m_ballY <span class="operator">-</span> m_ballPreviousY;
m_targetX <span class="operator">=</span> m_ballPreviousX;
interval <span class="operator">=</span> <span class="operator">-</span><span class="number">5</span>;
updateDirection();
}
<span class="keyword">else</span> <span class="keyword">if</span> ((m_ballX <span class="operator"><</span> blockSize) <span class="operator">&</span><span class="operator">&</span> ((m_ballY <span class="operator">+</span> ballWidth) <span class="operator"><</span> (m_leftBlockY <span class="operator">+</span> blockHeight))
<span class="operator">&</span><span class="operator">&</span> (m_ballY <span class="operator">></span> m_leftBlockY)) {
m_targetY <span class="operator">=</span> <span class="number">2</span> <span class="operator">*</span> m_ballY <span class="operator">-</span> m_ballPreviousY;
m_targetX <span class="operator">=</span> m_ballPreviousX;
interval <span class="operator">=</span> <span class="number">5</span>;
updateDirection();
}
<span class="keyword">else</span> <span class="keyword">if</span> (m_ballY <span class="operator"><</span> <span class="number">0</span> <span class="operator">|</span><span class="operator">|</span> (m_ballY <span class="operator">+</span> ballWidth <span class="operator">></span> m_boardHeight)) {
m_targetY <span class="operator">=</span> m_ballPreviousY;
m_targetX <span class="operator">=</span> m_ballX <span class="operator">+</span> interval;
updateDirection();
}
<span class="keyword">else</span> <span class="keyword">if</span> ((m_ballX <span class="operator">+</span> ballWidth) <span class="operator">></span> m_boardWidth) {
m_resultLeft<span class="operator">+</span><span class="operator">+</span>;
m_targetX <span class="operator">=</span> m_boardWidth;
m_targetY <span class="operator">=</span> m_boardHeight<span class="operator">/</span><span class="number">2</span>;
m_ballPreviousX <span class="operator">=</span> m_ballX <span class="operator">=</span> m_boardWidth<span class="operator">/</span><span class="number">2</span>;
m_ballPreviousY <span class="operator">=</span> m_ballY <span class="operator">=</span> m_boardHeight <span class="operator">-</span> m_boardWidth<span class="operator">/</span><span class="number">54</span>;
updateDirection();
checkResult();
<span class="type">QByteArray</span> result;
result<span class="operator">.</span>append(<span class="string">"result "</span>);
<span class="type">QByteArray</span> res;
res<span class="operator">.</span>setNum(m_resultLeft);
result<span class="operator">.</span>append(res);
result<span class="operator">.</span>append(<span class="char">' '</span>);
res<span class="operator">.</span>setNum(m_resultRight);
result<span class="operator">.</span>append(res);
result<span class="operator">.</span>append(<span class="string">" \n"</span>);
socket<span class="operator">-</span><span class="operator">></span>write(result);
qDebug() <span class="operator"><</span><span class="operator"><</span> result;
<span class="keyword">emit</span> resultChanged();
}
<span class="keyword">else</span> <span class="keyword">if</span> (m_ballX <span class="operator"><</span> <span class="number">0</span>) {
m_resultRight<span class="operator">+</span><span class="operator">+</span>;
m_targetX <span class="operator">=</span> <span class="number">0</span>;
m_targetY <span class="operator">=</span> m_boardHeight<span class="operator">/</span><span class="number">2</span>;
m_ballPreviousX <span class="operator">=</span> m_ballX <span class="operator">=</span> m_boardWidth<span class="operator">/</span><span class="number">2</span>;
m_ballPreviousY <span class="operator">=</span> m_ballY <span class="operator">=</span> m_boardHeight <span class="operator">-</span> m_boardWidth<span class="operator">/</span><span class="number">54</span>;
updateDirection();
checkResult();
<span class="type">QByteArray</span> result;
result<span class="operator">.</span>append(<span class="string">"result "</span>);
<span class="type">QByteArray</span> res;
res<span class="operator">.</span>setNum(m_resultLeft);
result<span class="operator">.</span>append(res);
result<span class="operator">.</span>append(<span class="char">' '</span>);
res<span class="operator">.</span>setNum(m_resultRight);
result<span class="operator">.</span>append(res);
result<span class="operator">.</span>append(<span class="string">" \n"</span>);
socket<span class="operator">-</span><span class="operator">></span>write(result);
<span class="keyword">emit</span> resultChanged();
}
}
<span class="type">void</span> PingPong<span class="operator">::</span>checkResult()
{
<span class="keyword">if</span> (m_resultRight <span class="operator">=</span><span class="operator">=</span> <span class="number">10</span> <span class="operator">&</span><span class="operator">&</span> m_role <span class="operator">=</span><span class="operator">=</span> <span class="number">2</span>) {
setMessage(<span class="string">"Game over. You win!"</span>);
m_timer<span class="operator">-</span><span class="operator">></span>stop();
}
<span class="keyword">else</span> <span class="keyword">if</span> (m_resultRight <span class="operator">=</span><span class="operator">=</span> <span class="number">10</span> <span class="operator">&</span><span class="operator">&</span> m_role <span class="operator">=</span><span class="operator">=</span> <span class="number">1</span>) {
setMessage(<span class="string">"Game over. You lose!"</span>);
m_timer<span class="operator">-</span><span class="operator">></span>stop();
}
<span class="keyword">else</span> <span class="keyword">if</span> (m_resultLeft <span class="operator">=</span><span class="operator">=</span> <span class="number">10</span> <span class="operator">&</span><span class="operator">&</span> m_role <span class="operator">=</span><span class="operator">=</span> <span class="number">1</span>) {
setMessage(<span class="string">"Game over. You win!"</span>);
m_timer<span class="operator">-</span><span class="operator">></span>stop();
}
<span class="keyword">else</span> <span class="keyword">if</span> (m_resultLeft <span class="operator">=</span><span class="operator">=</span> <span class="number">10</span> <span class="operator">&</span><span class="operator">&</span> m_role <span class="operator">=</span><span class="operator">=</span> <span class="number">2</span>) {
setMessage(<span class="string">"Game over. You lose!"</span>);
m_timer<span class="operator">-</span><span class="operator">></span>stop();
}
}
<span class="type">void</span> PingPong<span class="operator">::</span>updateDirection()
{
m_direction <span class="operator">=</span> (m_targetY <span class="operator">-</span> m_ballY)<span class="operator">/</span>(m_targetX <span class="operator">-</span> m_ballX);
}
<span class="type">void</span> PingPong<span class="operator">::</span>startServer()
{
setMessage(<span class="type">QStringLiteral</span>(<span class="string">"Starting the server"</span>));
m_serverInfo <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qbluetoothserver.html">QBluetoothServer</a></span>(<span class="type"><a href="qbluetoothserviceinfo.html">QBluetoothServiceInfo</a></span><span class="operator">::</span>RfcommProtocol<span class="operator">,</span> <span class="keyword">this</span>);
connect(m_serverInfo<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qbluetoothserver.html">QBluetoothServer</a></span><span class="operator">::</span>newConnection<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>PingPong<span class="operator">::</span>clientConnected);
connect(m_serverInfo<span class="operator">,</span> <span class="type">QOverload</span><span class="operator"><</span><span class="type"><a href="qbluetoothserver.html">QBluetoothServer</a></span><span class="operator">::</span>Error<span class="operator">></span><span class="operator">::</span>of(<span class="operator">&</span><span class="type"><a href="qbluetoothserver.html">QBluetoothServer</a></span><span class="operator">::</span>error)<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>PingPong<span class="operator">::</span>serverError);
<span class="keyword">const</span> <span class="type"><a href="qbluetoothuuid.html">QBluetoothUuid</a></span> uuid(serviceUuid);
m_serverInfo<span class="operator">-</span><span class="operator">></span>listen(uuid<span class="operator">,</span> <span class="type">QStringLiteral</span>(<span class="string">"PingPong server"</span>));
setMessage(<span class="type">QStringLiteral</span>(<span class="string">"Server started, waiting for the client. You are the left player."</span>));
<span class="comment">// m_role is set to 1 if it is a server</span>
m_role <span class="operator">=</span> <span class="number">1</span>;
<span class="keyword">emit</span> roleChanged();
}
<span class="type">void</span> PingPong<span class="operator">::</span>startClient()
{
discoveryAgent <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qbluetoothservicediscoveryagent.html">QBluetoothServiceDiscoveryAgent</a></span>(<span class="type"><a href="qbluetoothaddress.html">QBluetoothAddress</a></span>());
connect(discoveryAgent<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qbluetoothservicediscoveryagent.html">QBluetoothServiceDiscoveryAgent</a></span><span class="operator">::</span>serviceDiscovered<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>PingPong<span class="operator">::</span>addService);
connect(discoveryAgent<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qbluetoothservicediscoveryagent.html">QBluetoothServiceDiscoveryAgent</a></span><span class="operator">::</span>finished<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>PingPong<span class="operator">::</span>done);
connect(discoveryAgent<span class="operator">,</span> <span class="type">QOverload</span><span class="operator"><</span><span class="type"><a href="qbluetoothservicediscoveryagent.html">QBluetoothServiceDiscoveryAgent</a></span><span class="operator">::</span>Error<span class="operator">></span><span class="operator">::</span>of(<span class="operator">&</span><span class="type"><a href="qbluetoothservicediscoveryagent.html">QBluetoothServiceDiscoveryAgent</a></span><span class="operator">::</span>error)<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>PingPong<span class="operator">::</span>serviceScanError);
<span class="preprocessor">#ifdef Q_OS_ANDROID //see QTBUG-61392</span>
<span class="keyword">if</span> (<span class="type">QtAndroid</span><span class="operator">::</span>androidSdkVersion() <span class="operator">></span><span class="operator">=</span> <span class="number">23</span>)
discoveryAgent<span class="operator">-</span><span class="operator">></span>setUuidFilter(<span class="type"><a href="qbluetoothuuid.html">QBluetoothUuid</a></span>(androidUuid));
<span class="keyword">else</span>
discoveryAgent<span class="operator">-</span><span class="operator">></span>setUuidFilter(<span class="type"><a href="qbluetoothuuid.html">QBluetoothUuid</a></span>(serviceUuid));
<span class="preprocessor">#else</span>
discoveryAgent<span class="operator">-</span><span class="operator">></span>setUuidFilter(<span class="type"><a href="qbluetoothuuid.html">QBluetoothUuid</a></span>(serviceUuid));
<span class="preprocessor">#endif</span>
discoveryAgent<span class="operator">-</span><span class="operator">></span>start(<span class="type"><a href="qbluetoothservicediscoveryagent.html">QBluetoothServiceDiscoveryAgent</a></span><span class="operator">::</span>FullDiscovery);
setMessage(<span class="type">QStringLiteral</span>(<span class="string">"Starting server discovery. You are the right player"</span>));
<span class="comment">// m_role is set to 2 if it is a client</span>
m_role <span class="operator">=</span> <span class="number">2</span>;
<span class="keyword">emit</span> roleChanged();
}
<span class="type">void</span> PingPong<span class="operator">::</span>clientConnected()
{
<span class="keyword">if</span> (<span class="operator">!</span>m_serverInfo<span class="operator">-</span><span class="operator">></span>hasPendingConnections()) {
setMessage(<span class="string">"FAIL: expected pending server connection"</span>);
<span class="keyword">return</span>;
}
socket <span class="operator">=</span> m_serverInfo<span class="operator">-</span><span class="operator">></span>nextPendingConnection();
<span class="keyword">if</span> (<span class="operator">!</span>socket)
<span class="keyword">return</span>;
socket<span class="operator">-</span><span class="operator">></span>setParent(<span class="keyword">this</span>);
connect(socket<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qbluetoothsocket.html">QBluetoothSocket</a></span><span class="operator">::</span>readyRead<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>PingPong<span class="operator">::</span>readSocket);
connect(socket<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qbluetoothsocket.html">QBluetoothSocket</a></span><span class="operator">::</span>disconnected<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>PingPong<span class="operator">::</span>clientDisconnected);
connect(socket<span class="operator">,</span> <span class="type">QOverload</span><span class="operator"><</span><span class="type"><a href="qbluetoothsocket.html">QBluetoothSocket</a></span><span class="operator">::</span>SocketError<span class="operator">></span><span class="operator">::</span>of(<span class="operator">&</span><span class="type"><a href="qbluetoothsocket.html">QBluetoothSocket</a></span><span class="operator">::</span>error)<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>PingPong<span class="operator">::</span>socketError);
setMessage(<span class="type">QStringLiteral</span>(<span class="string">"Client connected."</span>));
<span class="type">QByteArray</span> size;
size<span class="operator">.</span>setNum(m_boardWidth);
size<span class="operator">.</span>append(<span class="char">' '</span>);
<span class="type">QByteArray</span> size1;
size1<span class="operator">.</span>setNum(m_boardHeight);
size<span class="operator">.</span>append(size1);
size<span class="operator">.</span>append(<span class="string">" \n"</span>);
socket<span class="operator">-</span><span class="operator">></span>write(size<span class="operator">.</span>constData());
}
<span class="type">void</span> PingPong<span class="operator">::</span>clientDisconnected()
{
setMessage(<span class="type">QStringLiteral</span>(<span class="string">"Client disconnected"</span>));
m_timer<span class="operator">-</span><span class="operator">></span>stop();
}
<span class="type">void</span> PingPong<span class="operator">::</span>socketError(<span class="type"><a href="qbluetoothsocket.html">QBluetoothSocket</a></span><span class="operator">::</span>SocketError error)
{
Q_UNUSED(error);
m_timer<span class="operator">-</span><span class="operator">></span>stop();
}
<span class="type">void</span> PingPong<span class="operator">::</span>serverError(<span class="type"><a href="qbluetoothserver.html">QBluetoothServer</a></span><span class="operator">::</span>Error error)
{
Q_UNUSED(error);
m_timer<span class="operator">-</span><span class="operator">></span>stop();
}
<span class="type">void</span> PingPong<span class="operator">::</span>done()
{
qDebug() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Service scan done"</span>;
<span class="keyword">if</span> (<span class="operator">!</span>m_serviceFound)
setMessage(<span class="string">"PingPong service not found"</span>);
}
<span class="type">void</span> PingPong<span class="operator">::</span>addService(<span class="keyword">const</span> <span class="type"><a href="qbluetoothserviceinfo.html">QBluetoothServiceInfo</a></span> <span class="operator">&</span>service)
{
setMessage(<span class="string">"Service found. Setting parameters..."</span>);
socket <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qbluetoothsocket.html">QBluetoothSocket</a></span>(<span class="type"><a href="qbluetoothserviceinfo.html">QBluetoothServiceInfo</a></span><span class="operator">::</span>RfcommProtocol);
socket<span class="operator">-</span><span class="operator">></span>connectToService(service);
connect(socket<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qbluetoothsocket.html">QBluetoothSocket</a></span><span class="operator">::</span>readyRead<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>PingPong<span class="operator">::</span>readSocket);
connect(socket<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qbluetoothsocket.html">QBluetoothSocket</a></span><span class="operator">::</span>connected<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>PingPong<span class="operator">::</span>serverConnected);
connect(socket<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qbluetoothsocket.html">QBluetoothSocket</a></span><span class="operator">::</span>disconnected<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>PingPong<span class="operator">::</span>serverDisconnected);
m_serviceFound <span class="operator">=</span> <span class="keyword">true</span>;
}
<span class="type">void</span> PingPong<span class="operator">::</span>serviceScanError(<span class="type"><a href="qbluetoothservicediscoveryagent.html">QBluetoothServiceDiscoveryAgent</a></span><span class="operator">::</span>Error error)
{
setMessage(<span class="type">QStringLiteral</span>(<span class="string">"Scanning error"</span>) <span class="operator">+</span> error);
}
bool PingPong<span class="operator">::</span>showDialog() <span class="keyword">const</span>
{
<span class="keyword">return</span> m_showDialog;
}
<span class="type">QString</span> PingPong<span class="operator">::</span>message() <span class="keyword">const</span>
{
<span class="keyword">return</span> m_message;
}
<span class="type">void</span> PingPong<span class="operator">::</span>serverConnected()
{
setMessage(<span class="string">"Server Connected"</span>);
<span class="type">QByteArray</span> size;
size<span class="operator">.</span>setNum(m_boardWidth);
size<span class="operator">.</span>append(<span class="char">' '</span>);
<span class="type">QByteArray</span> size1;
size1<span class="operator">.</span>setNum(m_boardHeight);
size<span class="operator">.</span>append(size1);
size<span class="operator">.</span>append(<span class="string">" \n"</span>);
socket<span class="operator">-</span><span class="operator">></span>write(size<span class="operator">.</span>constData());
}
<span class="type">void</span> PingPong<span class="operator">::</span>serverDisconnected()
{
setMessage(<span class="string">"Server Disconnected"</span>);
m_timer<span class="operator">-</span><span class="operator">></span>stop();
}
<span class="type">void</span> PingPong<span class="operator">::</span>readSocket()
{
<span class="keyword">if</span> (<span class="operator">!</span>socket)
<span class="keyword">return</span>;
<span class="keyword">const</span> <span class="type">char</span> sep <span class="operator">=</span> <span class="char">' '</span>;
<span class="type">QByteArray</span> line;
<span class="keyword">while</span> (socket<span class="operator">-</span><span class="operator">></span>canReadLine()) {
line <span class="operator">=</span> socket<span class="operator">-</span><span class="operator">></span>readLine();
<span class="comment">//qDebug() << QString::fromUtf8(line.constData(), line.length());</span>
<span class="keyword">if</span> (line<span class="operator">.</span>contains(<span class="string">"result"</span>)) {
<span class="type">QList</span><span class="operator"><</span><span class="type">QByteArray</span><span class="operator">></span> result <span class="operator">=</span> line<span class="operator">.</span>split(sep);
<span class="keyword">if</span> (result<span class="operator">.</span>size() <span class="operator">></span> <span class="number">2</span>) {
<span class="type">QByteArray</span> leftSide <span class="operator">=</span> result<span class="operator">.</span>at(<span class="number">1</span>);
<span class="type">QByteArray</span> rightSide <span class="operator">=</span> result<span class="operator">.</span>at(<span class="number">2</span>);
m_resultLeft <span class="operator">=</span> leftSide<span class="operator">.</span>toInt();
m_resultRight <span class="operator">=</span> rightSide<span class="operator">.</span>toInt();
<span class="keyword">emit</span> resultChanged();
checkResult();
}
}
}
<span class="keyword">if</span> ((m_proportionX <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span> <span class="operator">|</span><span class="operator">|</span> m_proportionY <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>)) {
<span class="type">QList</span><span class="operator"><</span><span class="type">QByteArray</span><span class="operator">></span> boardSize <span class="operator">=</span> line<span class="operator">.</span>split(sep);
<span class="keyword">if</span> (boardSize<span class="operator">.</span>size() <span class="operator">></span> <span class="number">1</span>) {
<span class="type">QByteArray</span> boardWidth <span class="operator">=</span> boardSize<span class="operator">.</span>at(<span class="number">0</span>);
<span class="type">QByteArray</span> boardHeight <span class="operator">=</span> boardSize<span class="operator">.</span>at(<span class="number">1</span>);
m_proportionX <span class="operator">=</span> m_boardWidth<span class="operator">/</span>boardWidth<span class="operator">.</span>toFloat();
m_proportionY <span class="operator">=</span> m_boardHeight<span class="operator">/</span>boardHeight<span class="operator">.</span>toFloat();
setMessage(<span class="string">"Screen adjusted. Get ready!"</span>);
<span class="type">QTimer</span><span class="operator">::</span>singleShot(<span class="number">3000</span><span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(startGame()));
}
}
<span class="keyword">else</span> <span class="keyword">if</span> (m_role <span class="operator">=</span><span class="operator">=</span> <span class="number">1</span>) {
<span class="type">QList</span><span class="operator"><</span><span class="type">QByteArray</span><span class="operator">></span> boardSize <span class="operator">=</span> line<span class="operator">.</span>split(sep);
<span class="keyword">if</span> (boardSize<span class="operator">.</span>size() <span class="operator">></span> <span class="number">1</span>) {
<span class="type">QByteArray</span> rightBlockY <span class="operator">=</span> boardSize<span class="operator">.</span>at(<span class="number">0</span>);
m_rightBlockY <span class="operator">=</span> m_proportionY <span class="operator">*</span> rightBlockY<span class="operator">.</span>toFloat();
<span class="keyword">emit</span> rightBlockChanged();
}
}
<span class="keyword">else</span> <span class="keyword">if</span> (m_role <span class="operator">=</span><span class="operator">=</span> <span class="number">2</span>) {
<span class="type">QList</span><span class="operator"><</span><span class="type">QByteArray</span><span class="operator">></span> boardSize <span class="operator">=</span> line<span class="operator">.</span>split(sep);
<span class="keyword">if</span> (boardSize<span class="operator">.</span>size() <span class="operator">></span> <span class="number">2</span>) {
<span class="type">QByteArray</span> ballX <span class="operator">=</span> boardSize<span class="operator">.</span>at(<span class="number">0</span>);
<span class="type">QByteArray</span> ballY <span class="operator">=</span> boardSize<span class="operator">.</span>at(<span class="number">1</span>);
<span class="type">QByteArray</span> leftBlockY <span class="operator">=</span> boardSize<span class="operator">.</span>at(<span class="number">2</span>);
m_ballX <span class="operator">=</span> m_proportionX <span class="operator">*</span> ballX<span class="operator">.</span>toFloat();
m_ballY <span class="operator">=</span> m_proportionY <span class="operator">*</span> ballY<span class="operator">.</span>toFloat();
m_leftBlockY <span class="operator">=</span> m_proportionY <span class="operator">*</span> leftBlockY<span class="operator">.</span>toFloat();
<span class="keyword">emit</span> leftBlockChanged();
<span class="keyword">emit</span> ballChanged();
}
}
}
<span class="type">void</span> PingPong<span class="operator">::</span>setMessage(<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&</span>message)
{
m_showDialog <span class="operator">=</span> <span class="keyword">true</span>;
m_message <span class="operator">=</span> message;
<span class="keyword">emit</span> showDialogChanged();
}
<span class="type">int</span> PingPong<span class="operator">::</span>role() <span class="keyword">const</span>
{
<span class="keyword">return</span> m_role;
}
<span class="type">int</span> PingPong<span class="operator">::</span>leftResult() <span class="keyword">const</span>
{
<span class="keyword">return</span> m_resultLeft;
}
<span class="type">int</span> PingPong<span class="operator">::</span>rightResult() <span class="keyword">const</span>
{
<span class="keyword">return</span> m_resultRight;
}
<span class="type">float</span> PingPong<span class="operator">::</span>ballX() <span class="keyword">const</span>
{
<span class="keyword">return</span> m_ballX;
}
<span class="type">float</span> PingPong<span class="operator">::</span>ballY() <span class="keyword">const</span>
{
<span class="keyword">return</span> m_ballY;
}
<span class="type">float</span> PingPong<span class="operator">::</span>leftBlockY() <span class="keyword">const</span>
{
<span class="keyword">return</span> m_leftBlockY;
}
<span class="type">float</span> PingPong<span class="operator">::</span>rightBlockY() <span class="keyword">const</span>
{
<span class="keyword">return</span> m_rightBlockY;
}
</pre>
</div>
<!-- @@@pingpong/pingpong.cpp -->
</div>
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<p>
<acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd.
Documentation contributions included herein are the copyrights of
their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property
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