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<h1 class="title">graphicsscene.cpp Example File</h1>
<span class="small-subtitle">demos/sub-attaq/graphicsscene.cpp</span>
<!-- $$$demos/sub-attaq/graphicsscene.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp"> <span class="comment">/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="comment">//Own</span>
<span class="preprocessor">#include &quot;graphicsscene.h&quot;</span>
<span class="preprocessor">#include &quot;states.h&quot;</span>
<span class="preprocessor">#include &quot;boat.h&quot;</span>
<span class="preprocessor">#include &quot;submarine.h&quot;</span>
<span class="preprocessor">#include &quot;torpedo.h&quot;</span>
<span class="preprocessor">#include &quot;bomb.h&quot;</span>
<span class="preprocessor">#include &quot;pixmapitem.h&quot;</span>
<span class="preprocessor">#include &quot;animationmanager.h&quot;</span>
<span class="preprocessor">#include &quot;qanimationstate.h&quot;</span>
<span class="preprocessor">#include &quot;progressitem.h&quot;</span>
<span class="preprocessor">#include &quot;textinformationitem.h&quot;</span>
<span class="comment">//Qt</span>
<span class="preprocessor">#include &lt;QtCore/QPropertyAnimation&gt;</span>
<span class="preprocessor">#include &lt;QtCore/QSequentialAnimationGroup&gt;</span>
<span class="preprocessor">#include &lt;QtCore/QParallelAnimationGroup&gt;</span>
<span class="preprocessor">#include &lt;QtCore/QStateMachine&gt;</span>
<span class="preprocessor">#include &lt;QtCore/QFinalState&gt;</span>
<span class="preprocessor">#include &lt;QtCore/QPauseAnimation&gt;</span>
<span class="preprocessor">#include &lt;QtGui/QAction&gt;</span>
<span class="preprocessor">#include &lt;QtCore/QDir&gt;</span>
<span class="preprocessor">#include &lt;QtGui/QApplication&gt;</span>
<span class="preprocessor">#include &lt;QtGui/QMessageBox&gt;</span>
<span class="preprocessor">#include &lt;QtGui/QGraphicsView&gt;</span>
<span class="preprocessor">#include &lt;QtGui/QGraphicsSceneMouseEvent&gt;</span>
<span class="preprocessor">#include &lt;QtCore/QXmlStreamReader&gt;</span>
GraphicsScene<span class="operator">::</span>GraphicsScene(<span class="type">int</span> x<span class="operator">,</span> <span class="type">int</span> y<span class="operator">,</span> <span class="type">int</span> width<span class="operator">,</span> <span class="type">int</span> height<span class="operator">,</span> Mode mode)
: <span class="type"><a href="qgraphicsscene.html">QGraphicsScene</a></span>(x <span class="operator">,</span> y<span class="operator">,</span> width<span class="operator">,</span> height)<span class="operator">,</span> mode(mode)<span class="operator">,</span> boat(<span class="keyword">new</span> Boat)
{
PixmapItem <span class="operator">*</span>backgroundItem <span class="operator">=</span> <span class="keyword">new</span> PixmapItem(<span class="type"><a href="qstring.html">QString</a></span>(<span class="string">&quot;background&quot;</span>)<span class="operator">,</span>mode);
backgroundItem<span class="operator">-</span><span class="operator">&gt;</span>setZValue(<span class="number">1</span>);
backgroundItem<span class="operator">-</span><span class="operator">&gt;</span>setPos(<span class="number">0</span><span class="operator">,</span><span class="number">0</span>);
addItem(backgroundItem);
PixmapItem <span class="operator">*</span>surfaceItem <span class="operator">=</span> <span class="keyword">new</span> PixmapItem(<span class="type"><a href="qstring.html">QString</a></span>(<span class="string">&quot;surface&quot;</span>)<span class="operator">,</span>mode);
surfaceItem<span class="operator">-</span><span class="operator">&gt;</span>setZValue(<span class="number">3</span>);
surfaceItem<span class="operator">-</span><span class="operator">&gt;</span>setPos(<span class="number">0</span><span class="operator">,</span>sealLevel() <span class="operator">-</span> surfaceItem<span class="operator">-</span><span class="operator">&gt;</span>boundingRect()<span class="operator">.</span>height()<span class="operator">/</span><span class="number">2</span>);
addItem(surfaceItem);
<span class="comment">//The item that display score and level</span>
progressItem <span class="operator">=</span> <span class="keyword">new</span> ProgressItem(backgroundItem);
textInformationItem <span class="operator">=</span> <span class="keyword">new</span> TextInformationItem(backgroundItem);
textInformationItem<span class="operator">-</span><span class="operator">&gt;</span>hide();
<span class="comment">//We create the boat</span>
addItem(boat);
boat<span class="operator">-</span><span class="operator">&gt;</span>setPos(<span class="keyword">this</span><span class="operator">-</span><span class="operator">&gt;</span>width()<span class="operator">/</span><span class="number">2</span><span class="operator">,</span> sealLevel() <span class="operator">-</span> boat<span class="operator">-</span><span class="operator">&gt;</span>size()<span class="operator">.</span>height());
boat<span class="operator">-</span><span class="operator">&gt;</span>hide();
<span class="comment">//parse the xml that contain all data of the game</span>
<span class="type"><a href="qxmlstreamreader.html">QXmlStreamReader</a></span> reader;
<span class="type"><a href="qfile.html">QFile</a></span> file(<span class="string">&quot;:data.xml&quot;</span>);
file<span class="operator">.</span>open(<span class="type"><a href="qiodevice.html">QIODevice</a></span><span class="operator">::</span>ReadOnly);
reader<span class="operator">.</span>setDevice(<span class="operator">&amp;</span>file);
LevelDescription currentLevel;
<span class="keyword">while</span> (<span class="operator">!</span>reader<span class="operator">.</span>atEnd()) {
reader<span class="operator">.</span>readNext();
<span class="keyword">if</span> (reader<span class="operator">.</span>tokenType() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qxmlstreamreader.html">QXmlStreamReader</a></span><span class="operator">::</span>StartElement) {
<span class="keyword">if</span> (reader<span class="operator">.</span>name() <span class="operator">=</span><span class="operator">=</span> <span class="string">&quot;submarine&quot;</span>) {
SubmarineDescription desc;
desc<span class="operator">.</span>name <span class="operator">=</span> reader<span class="operator">.</span>attributes()<span class="operator">.</span>value(<span class="string">&quot;name&quot;</span>)<span class="operator">.</span>toString();
desc<span class="operator">.</span>points <span class="operator">=</span> reader<span class="operator">.</span>attributes()<span class="operator">.</span>value(<span class="string">&quot;points&quot;</span>)<span class="operator">.</span>toString()<span class="operator">.</span>toInt();
desc<span class="operator">.</span>type <span class="operator">=</span> reader<span class="operator">.</span>attributes()<span class="operator">.</span>value(<span class="string">&quot;type&quot;</span>)<span class="operator">.</span>toString()<span class="operator">.</span>toInt();
submarinesData<span class="operator">.</span>append(desc);
} <span class="keyword">else</span> <span class="keyword">if</span> (reader<span class="operator">.</span>name() <span class="operator">=</span><span class="operator">=</span> <span class="string">&quot;level&quot;</span>) {
currentLevel<span class="operator">.</span>id <span class="operator">=</span> reader<span class="operator">.</span>attributes()<span class="operator">.</span>value(<span class="string">&quot;id&quot;</span>)<span class="operator">.</span>toString()<span class="operator">.</span>toInt();
currentLevel<span class="operator">.</span>name <span class="operator">=</span> reader<span class="operator">.</span>attributes()<span class="operator">.</span>value(<span class="string">&quot;name&quot;</span>)<span class="operator">.</span>toString();
} <span class="keyword">else</span> <span class="keyword">if</span> (reader<span class="operator">.</span>name() <span class="operator">=</span><span class="operator">=</span> <span class="string">&quot;subinstance&quot;</span>) {
currentLevel<span class="operator">.</span>submarines<span class="operator">.</span>append(<a href="qpair.html#qMakePair">qMakePair</a>(reader<span class="operator">.</span>attributes()<span class="operator">.</span>value(<span class="string">&quot;type&quot;</span>)<span class="operator">.</span>toString()<span class="operator">.</span>toInt()<span class="operator">,</span> reader<span class="operator">.</span>attributes()<span class="operator">.</span>value(<span class="string">&quot;nb&quot;</span>)<span class="operator">.</span>toString()<span class="operator">.</span>toInt()));
}
} <span class="keyword">else</span> <span class="keyword">if</span> (reader<span class="operator">.</span>tokenType() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qxmlstreamreader.html">QXmlStreamReader</a></span><span class="operator">::</span>EndElement) {
<span class="keyword">if</span> (reader<span class="operator">.</span>name() <span class="operator">=</span><span class="operator">=</span> <span class="string">&quot;level&quot;</span>) {
levelsData<span class="operator">.</span>insert(currentLevel<span class="operator">.</span>id<span class="operator">,</span> currentLevel);
currentLevel<span class="operator">.</span>submarines<span class="operator">.</span>clear();
}
}
}
}
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> GraphicsScene<span class="operator">::</span>sealLevel() <span class="keyword">const</span>
{
<span class="keyword">return</span> (mode <span class="operator">=</span><span class="operator">=</span> Big) <span class="operator">?</span> <span class="number">220</span> : <span class="number">160</span>;
}
<span class="type">void</span> GraphicsScene<span class="operator">::</span>setupScene(<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>newAction<span class="operator">,</span> <span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>quitAction)
{
<span class="keyword">static</span> <span class="keyword">const</span> <span class="type">int</span> nLetters <span class="operator">=</span> <span class="number">10</span>;
<span class="keyword">static</span> <span class="keyword">struct</span> {
<span class="type">char</span> <span class="keyword">const</span> <span class="operator">*</span>pix;
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> initX<span class="operator">,</span> initY;
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> destX<span class="operator">,</span> destY;
} logoData<span class="operator">[</span>nLetters<span class="operator">]</span> <span class="operator">=</span> {
{<span class="string">&quot;s&quot;</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1000</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1000</span><span class="operator">,</span> <span class="number">300</span><span class="operator">,</span> <span class="number">150</span> }<span class="operator">,</span>
{<span class="string">&quot;u&quot;</span><span class="operator">,</span> <span class="operator">-</span><span class="number">800</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1000</span><span class="operator">,</span> <span class="number">350</span><span class="operator">,</span> <span class="number">150</span> }<span class="operator">,</span>
{<span class="string">&quot;b&quot;</span><span class="operator">,</span> <span class="operator">-</span><span class="number">600</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1000</span><span class="operator">,</span> <span class="number">400</span><span class="operator">,</span> <span class="number">120</span> }<span class="operator">,</span>
{<span class="string">&quot;dash&quot;</span><span class="operator">,</span> <span class="operator">-</span><span class="number">400</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1000</span><span class="operator">,</span> <span class="number">460</span><span class="operator">,</span> <span class="number">150</span> }<span class="operator">,</span>
{<span class="string">&quot;a&quot;</span><span class="operator">,</span> <span class="number">1000</span><span class="operator">,</span> <span class="number">2000</span><span class="operator">,</span> <span class="number">350</span><span class="operator">,</span> <span class="number">250</span> }<span class="operator">,</span>
{<span class="string">&quot;t&quot;</span><span class="operator">,</span> <span class="number">800</span><span class="operator">,</span> <span class="number">2000</span><span class="operator">,</span> <span class="number">400</span><span class="operator">,</span> <span class="number">250</span> }<span class="operator">,</span>
{<span class="string">&quot;t2&quot;</span><span class="operator">,</span> <span class="number">600</span><span class="operator">,</span> <span class="number">2000</span><span class="operator">,</span> <span class="number">430</span><span class="operator">,</span> <span class="number">250</span> }<span class="operator">,</span>
{<span class="string">&quot;a2&quot;</span><span class="operator">,</span> <span class="number">400</span><span class="operator">,</span> <span class="number">2000</span><span class="operator">,</span> <span class="number">465</span><span class="operator">,</span> <span class="number">250</span> }<span class="operator">,</span>
{<span class="string">&quot;q&quot;</span><span class="operator">,</span> <span class="number">200</span><span class="operator">,</span> <span class="number">2000</span><span class="operator">,</span> <span class="number">510</span><span class="operator">,</span> <span class="number">250</span> }<span class="operator">,</span>
{<span class="string">&quot;excl&quot;</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">2000</span><span class="operator">,</span> <span class="number">570</span><span class="operator">,</span> <span class="number">220</span> } };
<span class="type"><a href="qsequentialanimationgroup.html">QSequentialAnimationGroup</a></span> <span class="operator">*</span> lettersGroupMoving <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qsequentialanimationgroup.html">QSequentialAnimationGroup</a></span>(<span class="keyword">this</span>);
<span class="type"><a href="qparallelanimationgroup.html">QParallelAnimationGroup</a></span> <span class="operator">*</span> lettersGroupFading <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qparallelanimationgroup.html">QParallelAnimationGroup</a></span>(<span class="keyword">this</span>);
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator">&lt;</span> nLetters; <span class="operator">+</span><span class="operator">+</span>i) {
PixmapItem <span class="operator">*</span>logo <span class="operator">=</span> <span class="keyword">new</span> PixmapItem(QLatin1String(<span class="string">&quot;:/logo-&quot;</span>) <span class="operator">+</span> logoData<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>pix<span class="operator">,</span> <span class="keyword">this</span>);
logo<span class="operator">-</span><span class="operator">&gt;</span>setPos(logoData<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>initX<span class="operator">,</span> logoData<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>initY);
logo<span class="operator">-</span><span class="operator">&gt;</span>setZValue(i <span class="operator">+</span> <span class="number">3</span>);
<span class="comment">//creation of the animations for moving letters</span>
<span class="type"><a href="qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>moveAnim <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpropertyanimation.html">QPropertyAnimation</a></span>(logo<span class="operator">,</span> <span class="string">&quot;pos&quot;</span><span class="operator">,</span> lettersGroupMoving);
moveAnim<span class="operator">-</span><span class="operator">&gt;</span>setEndValue(<span class="type"><a href="qpointf.html">QPointF</a></span>(logoData<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>destX<span class="operator">,</span> logoData<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>destY));
moveAnim<span class="operator">-</span><span class="operator">&gt;</span>setDuration(<span class="number">200</span>);
moveAnim<span class="operator">-</span><span class="operator">&gt;</span>setEasingCurve(<span class="type"><a href="qeasingcurve.html">QEasingCurve</a></span><span class="operator">::</span>OutElastic);
lettersGroupMoving<span class="operator">-</span><span class="operator">&gt;</span>addPause(<span class="number">50</span>);
<span class="comment">//creation of the animations for fading out the letters</span>
<span class="type"><a href="qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>fadeAnim <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpropertyanimation.html">QPropertyAnimation</a></span>(logo<span class="operator">,</span> <span class="string">&quot;opacity&quot;</span><span class="operator">,</span> lettersGroupFading);
fadeAnim<span class="operator">-</span><span class="operator">&gt;</span>setDuration(<span class="number">800</span>);
fadeAnim<span class="operator">-</span><span class="operator">&gt;</span>setEndValue(<span class="number">0</span>);
fadeAnim<span class="operator">-</span><span class="operator">&gt;</span>setEasingCurve(<span class="type"><a href="qeasingcurve.html">QEasingCurve</a></span><span class="operator">::</span>OutQuad);
}
<span class="type"><a href="qstatemachine.html">QStateMachine</a></span> <span class="operator">*</span>machine <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qstatemachine.html">QStateMachine</a></span>(<span class="keyword">this</span>);
<span class="comment">//This state is when the player is playing</span>
PlayState <span class="operator">*</span>gameState <span class="operator">=</span> <span class="keyword">new</span> PlayState(<span class="keyword">this</span><span class="operator">,</span> machine);
<span class="comment">//Final state</span>
<span class="type"><a href="qfinalstate.html">QFinalState</a></span> <span class="operator">*</span>final <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qfinalstate.html">QFinalState</a></span>(machine);
<span class="comment">//Animation when the player enter in the game</span>
<span class="type">QAnimationState</span> <span class="operator">*</span>lettersMovingState <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QAnimationState</span>(machine);
lettersMovingState<span class="operator">-</span><span class="operator">&gt;</span>setAnimation(lettersGroupMoving);
<span class="comment">//Animation when the welcome screen disappear</span>
<span class="type">QAnimationState</span> <span class="operator">*</span>lettersFadingState <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QAnimationState</span>(machine);
lettersFadingState<span class="operator">-</span><span class="operator">&gt;</span>setAnimation(lettersGroupFading);
<span class="comment">//if new game then we fade out the welcome screen and start playing</span>
lettersMovingState<span class="operator">-</span><span class="operator">&gt;</span>addTransition(newAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> lettersFadingState);
lettersFadingState<span class="operator">-</span><span class="operator">&gt;</span>addTransition(lettersFadingState<span class="operator">,</span> SIGNAL(animationFinished())<span class="operator">,</span> gameState);
<span class="comment">//New Game is triggered then player start playing</span>
gameState<span class="operator">-</span><span class="operator">&gt;</span>addTransition(newAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> gameState);
<span class="comment">//Wanna quit, then connect to CTRL+Q</span>
gameState<span class="operator">-</span><span class="operator">&gt;</span>addTransition(quitAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> final);
lettersMovingState<span class="operator">-</span><span class="operator">&gt;</span>addTransition(quitAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> final);
<span class="comment">//Welcome screen is the initial state</span>
machine<span class="operator">-</span><span class="operator">&gt;</span>setInitialState(lettersMovingState);
machine<span class="operator">-</span><span class="operator">&gt;</span>start();
<span class="comment">//We reach the final state, then we quit</span>
connect(machine<span class="operator">,</span> SIGNAL(finished())<span class="operator">,</span> qApp<span class="operator">,</span> SLOT(quit()));
}
<span class="type">void</span> GraphicsScene<span class="operator">::</span>addItem(Bomb <span class="operator">*</span>bomb)
{
bombs<span class="operator">.</span>insert(bomb);
connect(bomb<span class="operator">,</span>SIGNAL(bombExecutionFinished())<span class="operator">,</span><span class="keyword">this</span><span class="operator">,</span> SLOT(onBombExecutionFinished()));
<span class="type"><a href="qgraphicsscene.html">QGraphicsScene</a></span><span class="operator">::</span>addItem(bomb);
}
<span class="type">void</span> GraphicsScene<span class="operator">::</span>addItem(Torpedo <span class="operator">*</span>torpedo)
{
torpedos<span class="operator">.</span>insert(torpedo);
connect(torpedo<span class="operator">,</span>SIGNAL(torpedoExecutionFinished())<span class="operator">,</span><span class="keyword">this</span><span class="operator">,</span> SLOT(onTorpedoExecutionFinished()));
<span class="type"><a href="qgraphicsscene.html">QGraphicsScene</a></span><span class="operator">::</span>addItem(torpedo);
}
<span class="type">void</span> GraphicsScene<span class="operator">::</span>addItem(SubMarine <span class="operator">*</span>submarine)
{
submarines<span class="operator">.</span>insert(submarine);
connect(submarine<span class="operator">,</span>SIGNAL(subMarineExecutionFinished())<span class="operator">,</span><span class="keyword">this</span><span class="operator">,</span> SLOT(onSubMarineExecutionFinished()));
<span class="type"><a href="qgraphicsscene.html">QGraphicsScene</a></span><span class="operator">::</span>addItem(submarine);
}
<span class="type">void</span> GraphicsScene<span class="operator">::</span>addItem(<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>item)
{
<span class="type"><a href="qgraphicsscene.html">QGraphicsScene</a></span><span class="operator">::</span>addItem(item);
}
<span class="type">void</span> GraphicsScene<span class="operator">::</span>onBombExecutionFinished()
{
Bomb <span class="operator">*</span>bomb <span class="operator">=</span> qobject_cast<span class="operator">&lt;</span>Bomb <span class="operator">*</span><span class="operator">&gt;</span>(sender());
bombs<span class="operator">.</span>remove(bomb);
bomb<span class="operator">-</span><span class="operator">&gt;</span>deleteLater();
<span class="keyword">if</span> (boat)
boat<span class="operator">-</span><span class="operator">&gt;</span>setBombsLaunched(boat<span class="operator">-</span><span class="operator">&gt;</span>bombsLaunched() <span class="operator">-</span> <span class="number">1</span>);
}
<span class="type">void</span> GraphicsScene<span class="operator">::</span>onTorpedoExecutionFinished()
{
Torpedo <span class="operator">*</span>torpedo <span class="operator">=</span> qobject_cast<span class="operator">&lt;</span>Torpedo <span class="operator">*</span><span class="operator">&gt;</span>(sender());
torpedos<span class="operator">.</span>remove(torpedo);
torpedo<span class="operator">-</span><span class="operator">&gt;</span>deleteLater();
}
<span class="type">void</span> GraphicsScene<span class="operator">::</span>onSubMarineExecutionFinished()
{
SubMarine <span class="operator">*</span>submarine <span class="operator">=</span> qobject_cast<span class="operator">&lt;</span>SubMarine <span class="operator">*</span><span class="operator">&gt;</span>(sender());
submarines<span class="operator">.</span>remove(submarine);
<span class="keyword">if</span> (submarines<span class="operator">.</span>count() <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>)
<span class="keyword">emit</span> allSubMarineDestroyed(submarine<span class="operator">-</span><span class="operator">&gt;</span>points());
<span class="keyword">else</span>
<span class="keyword">emit</span> subMarineDestroyed(submarine<span class="operator">-</span><span class="operator">&gt;</span>points());
submarine<span class="operator">-</span><span class="operator">&gt;</span>deleteLater();
}
<span class="type">void</span> GraphicsScene<span class="operator">::</span>clearScene()
{
foreach (SubMarine <span class="operator">*</span>sub<span class="operator">,</span> submarines) {
sub<span class="operator">-</span><span class="operator">&gt;</span>destroy();
sub<span class="operator">-</span><span class="operator">&gt;</span>deleteLater();
}
foreach (Torpedo <span class="operator">*</span>torpedo<span class="operator">,</span> torpedos) {
torpedo<span class="operator">-</span><span class="operator">&gt;</span>destroy();
torpedo<span class="operator">-</span><span class="operator">&gt;</span>deleteLater();
}
foreach (Bomb <span class="operator">*</span>bomb<span class="operator">,</span> bombs) {
bomb<span class="operator">-</span><span class="operator">&gt;</span>destroy();
bomb<span class="operator">-</span><span class="operator">&gt;</span>deleteLater();
}
submarines<span class="operator">.</span>clear();
bombs<span class="operator">.</span>clear();
torpedos<span class="operator">.</span>clear();
AnimationManager<span class="operator">::</span>self()<span class="operator">-</span><span class="operator">&gt;</span>unregisterAllAnimations();
boat<span class="operator">-</span><span class="operator">&gt;</span>stop();
boat<span class="operator">-</span><span class="operator">&gt;</span>hide();
boat<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);
}</pre>
</div>
<!-- @@@demos/sub-attaq/graphicsscene.cpp -->
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