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qt4-x11/doc/html/demos-sub-attaq-states-cpp.html
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<h1 class="title">states.cpp Example File</h1>
<span class="small-subtitle">demos/sub-attaq/states.cpp</span>
<!-- $$$demos/sub-attaq/states.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.
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** $QT_END_LICENSE$
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****************************************************************************/</span>
<span class="comment">//Own</span>
<span class="preprocessor">#include &quot;states.h&quot;</span>
<span class="preprocessor">#include &quot;graphicsscene.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;animationmanager.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;QtGui/QMessageBox&gt;</span>
<span class="preprocessor">#include &lt;QtGui/QGraphicsView&gt;</span>
<span class="preprocessor">#include &lt;QtCore/QStateMachine&gt;</span>
<span class="preprocessor">#include &lt;QtGui/QKeyEventTransition&gt;</span>
<span class="preprocessor">#include &lt;QtCore/QFinalState&gt;</span>
PlayState<span class="operator">::</span>PlayState(GraphicsScene <span class="operator">*</span>scene<span class="operator">,</span> <span class="type"><a href="qstate.html">QState</a></span> <span class="operator">*</span>parent)
: <span class="type"><a href="qstate.html">QState</a></span>(parent)<span class="operator">,</span>
scene(scene)<span class="operator">,</span>
machine(<span class="number">0</span>)<span class="operator">,</span>
currentLevel(<span class="number">0</span>)<span class="operator">,</span>
score(<span class="number">0</span>)
{
}
PlayState<span class="operator">::</span><span class="operator">~</span>PlayState()
{
<span class="keyword">delete</span> machine;
}
<span class="type">void</span> PlayState<span class="operator">::</span>onEntry(<span class="type"><a href="qevent.html">QEvent</a></span> <span class="operator">*</span>)
{
<span class="comment">//We are now playing?</span>
<span class="keyword">if</span> (machine) {
machine<span class="operator">-</span><span class="operator">&gt;</span>stop();
<span class="comment">//we hide the information</span>
scene<span class="operator">-</span><span class="operator">&gt;</span>textInformationItem<span class="operator">-</span><span class="operator">&gt;</span>hide();
scene<span class="operator">-</span><span class="operator">&gt;</span>clearScene();
currentLevel <span class="operator">=</span> <span class="number">0</span>;
score <span class="operator">=</span> <span class="number">0</span>;
<span class="keyword">delete</span> machine;
}
machine <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qstatemachine.html">QStateMachine</a></span>;
<span class="comment">//This state is when player is playing</span>
LevelState <span class="operator">*</span>levelState <span class="operator">=</span> <span class="keyword">new</span> LevelState(scene<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> machine);
<span class="comment">//This state is when the player is actually playing but the game is not paused</span>
<span class="type"><a href="qstate.html">QState</a></span> <span class="operator">*</span>playingState <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qstate.html">QState</a></span>(levelState);
levelState<span class="operator">-</span><span class="operator">&gt;</span>setInitialState(playingState);
<span class="comment">//This state is when the game is paused</span>
PauseState <span class="operator">*</span>pauseState <span class="operator">=</span> <span class="keyword">new</span> PauseState(scene<span class="operator">,</span> levelState);
<span class="comment">//We have one view, it receive the key press event</span>
<span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span> <span class="operator">*</span>pressPplay <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span>(scene<span class="operator">-</span><span class="operator">&gt;</span>views()<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">,</span> <span class="type"><a href="qevent.html">QEvent</a></span><span class="operator">::</span>KeyPress<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Key_P);
pressPplay<span class="operator">-</span><span class="operator">&gt;</span>setTargetState(pauseState);
<span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span> <span class="operator">*</span>pressPpause <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span>(scene<span class="operator">-</span><span class="operator">&gt;</span>views()<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">,</span> <span class="type"><a href="qevent.html">QEvent</a></span><span class="operator">::</span>KeyPress<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Key_P);
pressPpause<span class="operator">-</span><span class="operator">&gt;</span>setTargetState(playingState);
<span class="comment">//Pause &quot;P&quot; is triggered, the player pause the game</span>
playingState<span class="operator">-</span><span class="operator">&gt;</span>addTransition(pressPplay);
<span class="comment">//To get back playing when the game has been paused</span>
pauseState<span class="operator">-</span><span class="operator">&gt;</span>addTransition(pressPpause);
<span class="comment">//This state is when player have lost</span>
LostState <span class="operator">*</span>lostState <span class="operator">=</span> <span class="keyword">new</span> LostState(scene<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> machine);
<span class="comment">//This state is when player have won</span>
WinState <span class="operator">*</span>winState <span class="operator">=</span> <span class="keyword">new</span> WinState(scene<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> machine);
<span class="comment">//The boat has been destroyed then the game is finished</span>
levelState<span class="operator">-</span><span class="operator">&gt;</span>addTransition(scene<span class="operator">-</span><span class="operator">&gt;</span>boat<span class="operator">,</span> SIGNAL(boatExecutionFinished())<span class="operator">,</span>lostState);
<span class="comment">//This transition check if we won or not</span>
WinTransition <span class="operator">*</span>winTransition <span class="operator">=</span> <span class="keyword">new</span> WinTransition(scene<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> winState);
<span class="comment">//The boat has been destroyed then the game is finished</span>
levelState<span class="operator">-</span><span class="operator">&gt;</span>addTransition(winTransition);
<span class="comment">//This state is an animation when the score changed</span>
UpdateScoreState <span class="operator">*</span>scoreState <span class="operator">=</span> <span class="keyword">new</span> UpdateScoreState(<span class="keyword">this</span><span class="operator">,</span> levelState);
<span class="comment">//This transition update the score when a submarine die</span>
UpdateScoreTransition <span class="operator">*</span>scoreTransition <span class="operator">=</span> <span class="keyword">new</span> UpdateScoreTransition(scene<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> levelState);
scoreTransition<span class="operator">-</span><span class="operator">&gt;</span>setTargetState(scoreState);
<span class="comment">//The boat has been destroyed then the game is finished</span>
playingState<span class="operator">-</span><span class="operator">&gt;</span>addTransition(scoreTransition);
<span class="comment">//We go back to play state</span>
scoreState<span class="operator">-</span><span class="operator">&gt;</span>addTransition(playingState);
<span class="comment">//We start playing!!!</span>
machine<span class="operator">-</span><span class="operator">&gt;</span>setInitialState(levelState);
<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">//This transition is triggered when the player press space after completing a level</span>
CustomSpaceTransition <span class="operator">*</span>spaceTransition <span class="operator">=</span> <span class="keyword">new</span> CustomSpaceTransition(scene<span class="operator">-</span><span class="operator">&gt;</span>views()<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="type"><a href="qevent.html">QEvent</a></span><span class="operator">::</span>KeyPress<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Key_Space);
spaceTransition<span class="operator">-</span><span class="operator">&gt;</span>setTargetState(levelState);
winState<span class="operator">-</span><span class="operator">&gt;</span>addTransition(spaceTransition);
<span class="comment">//We lost we should reach the final state</span>
lostState<span class="operator">-</span><span class="operator">&gt;</span>addTransition(lostState<span class="operator">,</span> SIGNAL(finished())<span class="operator">,</span> final);
machine<span class="operator">-</span><span class="operator">&gt;</span>start();
}
LevelState<span class="operator">::</span>LevelState(GraphicsScene <span class="operator">*</span>scene<span class="operator">,</span> PlayState <span class="operator">*</span>game<span class="operator">,</span> <span class="type"><a href="qstate.html">QState</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="qstate.html">QState</a></span>(parent)<span class="operator">,</span> scene(scene)<span class="operator">,</span> game(game)
{
}
<span class="type">void</span> LevelState<span class="operator">::</span>onEntry(<span class="type"><a href="qevent.html">QEvent</a></span> <span class="operator">*</span>)
{
initializeLevel();
}
<span class="type">void</span> LevelState<span class="operator">::</span>initializeLevel()
{
<span class="comment">//we re-init the boat</span>
scene<span class="operator">-</span><span class="operator">&gt;</span>boat<span class="operator">-</span><span class="operator">&gt;</span>setPos(scene<span class="operator">-</span><span class="operator">&gt;</span>width()<span class="operator">/</span><span class="number">2</span><span class="operator">,</span> scene<span class="operator">-</span><span class="operator">&gt;</span>sealLevel() <span class="operator">-</span> scene<span class="operator">-</span><span class="operator">&gt;</span>boat<span class="operator">-</span><span class="operator">&gt;</span>size()<span class="operator">.</span>height());
scene<span class="operator">-</span><span class="operator">&gt;</span>boat<span class="operator">-</span><span class="operator">&gt;</span>setCurrentSpeed(<span class="number">0</span>);
scene<span class="operator">-</span><span class="operator">&gt;</span>boat<span class="operator">-</span><span class="operator">&gt;</span>setCurrentDirection(Boat<span class="operator">::</span>None);
scene<span class="operator">-</span><span class="operator">&gt;</span>boat<span class="operator">-</span><span class="operator">&gt;</span>setBombsLaunched(<span class="number">0</span>);
scene<span class="operator">-</span><span class="operator">&gt;</span>boat<span class="operator">-</span><span class="operator">&gt;</span>show();
scene<span class="operator">-</span><span class="operator">&gt;</span>setFocusItem(scene<span class="operator">-</span><span class="operator">&gt;</span>boat<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>OtherFocusReason);
scene<span class="operator">-</span><span class="operator">&gt;</span>boat<span class="operator">-</span><span class="operator">&gt;</span>run();
scene<span class="operator">-</span><span class="operator">&gt;</span>progressItem<span class="operator">-</span><span class="operator">&gt;</span>setScore(game<span class="operator">-</span><span class="operator">&gt;</span>score);
scene<span class="operator">-</span><span class="operator">&gt;</span>progressItem<span class="operator">-</span><span class="operator">&gt;</span>setLevel(game<span class="operator">-</span><span class="operator">&gt;</span>currentLevel <span class="operator">+</span> <span class="number">1</span>);
GraphicsScene<span class="operator">::</span>LevelDescription currentLevelDescription <span class="operator">=</span> scene<span class="operator">-</span><span class="operator">&gt;</span>levelsData<span class="operator">.</span>value(game<span class="operator">-</span><span class="operator">&gt;</span>currentLevel);
<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> currentLevelDescription<span class="operator">.</span>submarines<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i ) {
<span class="type"><a href="qpair.html">QPair</a></span><span class="operator">&lt;</span><span class="type">int</span><span class="operator">,</span><span class="type">int</span><span class="operator">&gt;</span> subContent <span class="operator">=</span> currentLevelDescription<span class="operator">.</span>submarines<span class="operator">.</span>at(i);
GraphicsScene<span class="operator">::</span>SubmarineDescription submarineDesc <span class="operator">=</span> scene<span class="operator">-</span><span class="operator">&gt;</span>submarinesData<span class="operator">.</span>at(subContent<span class="operator">.</span>first);
<span class="keyword">for</span> (<span class="type">int</span> j <span class="operator">=</span> <span class="number">0</span>; j <span class="operator">&lt;</span> subContent<span class="operator">.</span>second; <span class="operator">+</span><span class="operator">+</span>j ) {
SubMarine <span class="operator">*</span>sub <span class="operator">=</span> <span class="keyword">new</span> SubMarine(submarineDesc<span class="operator">.</span>type<span class="operator">,</span> submarineDesc<span class="operator">.</span>name<span class="operator">,</span> submarineDesc<span class="operator">.</span>points);
scene<span class="operator">-</span><span class="operator">&gt;</span>addItem(sub);
<span class="type">int</span> random <span class="operator">=</span> (qrand() <span class="operator">%</span> <span class="number">15</span> <span class="operator">+</span> <span class="number">1</span>);
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x <span class="operator">=</span> random <span class="operator">=</span><span class="operator">=</span> <span class="number">13</span> <span class="operator">|</span><span class="operator">|</span> random <span class="operator">=</span><span class="operator">=</span> <span class="number">5</span> <span class="operator">?</span> <span class="number">0</span> : scene<span class="operator">-</span><span class="operator">&gt;</span>width() <span class="operator">-</span> sub<span class="operator">-</span><span class="operator">&gt;</span>size()<span class="operator">.</span>width();
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y <span class="operator">=</span> scene<span class="operator">-</span><span class="operator">&gt;</span>height() <span class="operator">-</span>(qrand() <span class="operator">%</span> <span class="number">150</span> <span class="operator">+</span> <span class="number">1</span>) <span class="operator">-</span> sub<span class="operator">-</span><span class="operator">&gt;</span>size()<span class="operator">.</span>height();
sub<span class="operator">-</span><span class="operator">&gt;</span>setPos(x<span class="operator">,</span>y);
sub<span class="operator">-</span><span class="operator">&gt;</span>setCurrentDirection(x <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span> <span class="operator">?</span> SubMarine<span class="operator">::</span>Right : SubMarine<span class="operator">::</span>Left);
sub<span class="operator">-</span><span class="operator">&gt;</span>setCurrentSpeed(qrand() <span class="operator">%</span> <span class="number">3</span> <span class="operator">+</span> <span class="number">1</span>);
}
}
}
<span class="comment">/** Pause State */</span>
PauseState<span class="operator">::</span>PauseState(GraphicsScene <span class="operator">*</span>scene<span class="operator">,</span> <span class="type"><a href="qstate.html">QState</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="qstate.html">QState</a></span>(parent)<span class="operator">,</span>scene(scene)
{
}
<span class="type">void</span> PauseState<span class="operator">::</span>onEntry(<span class="type"><a href="qevent.html">QEvent</a></span> <span class="operator">*</span>)
{
AnimationManager<span class="operator">::</span>self()<span class="operator">-</span><span class="operator">&gt;</span>pauseAll();
scene<span class="operator">-</span><span class="operator">&gt;</span>boat<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
}
<span class="type">void</span> PauseState<span class="operator">::</span>onExit(<span class="type"><a href="qevent.html">QEvent</a></span> <span class="operator">*</span>)
{
AnimationManager<span class="operator">::</span>self()<span class="operator">-</span><span class="operator">&gt;</span>resumeAll();
scene<span class="operator">-</span><span class="operator">&gt;</span>boat<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);
scene<span class="operator">-</span><span class="operator">&gt;</span>boat<span class="operator">-</span><span class="operator">&gt;</span>setFocus();
}
<span class="comment">/** Lost State */</span>
LostState<span class="operator">::</span>LostState(GraphicsScene <span class="operator">*</span>scene<span class="operator">,</span> PlayState <span class="operator">*</span>game<span class="operator">,</span> <span class="type"><a href="qstate.html">QState</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="qstate.html">QState</a></span>(parent)<span class="operator">,</span> scene(scene)<span class="operator">,</span> game(game)
{
}
<span class="type">void</span> LostState<span class="operator">::</span>onEntry(<span class="type"><a href="qevent.html">QEvent</a></span> <span class="operator">*</span>)
{
<span class="comment">//The message to display</span>
<span class="type"><a href="qstring.html">QString</a></span> message <span class="operator">=</span> <span class="type"><a href="qstring.html">QString</a></span>(<span class="string">&quot;You lose on level %1. Your score is %2.&quot;</span>)<span class="operator">.</span>arg(game<span class="operator">-</span><span class="operator">&gt;</span>currentLevel<span class="operator">+</span><span class="number">1</span>)<span class="operator">.</span>arg(game<span class="operator">-</span><span class="operator">&gt;</span>score);
<span class="comment">//We set the level back to 0</span>
game<span class="operator">-</span><span class="operator">&gt;</span>currentLevel <span class="operator">=</span> <span class="number">0</span>;
<span class="comment">//We set the score back to 0</span>
game<span class="operator">-</span><span class="operator">&gt;</span>score <span class="operator">=</span> <span class="number">0</span>;
<span class="comment">//We clear the scene</span>
scene<span class="operator">-</span><span class="operator">&gt;</span>clearScene();
<span class="comment">//We inform the player</span>
scene<span class="operator">-</span><span class="operator">&gt;</span>textInformationItem<span class="operator">-</span><span class="operator">&gt;</span>setMessage(message);
scene<span class="operator">-</span><span class="operator">&gt;</span>textInformationItem<span class="operator">-</span><span class="operator">&gt;</span>show();
}
<span class="type">void</span> LostState<span class="operator">::</span>onExit(<span class="type"><a href="qevent.html">QEvent</a></span> <span class="operator">*</span>)
{
<span class="comment">//we hide the information</span>
scene<span class="operator">-</span><span class="operator">&gt;</span>textInformationItem<span class="operator">-</span><span class="operator">&gt;</span>hide();
}
<span class="comment">/** Win State */</span>
WinState<span class="operator">::</span>WinState(GraphicsScene <span class="operator">*</span>scene<span class="operator">,</span> PlayState <span class="operator">*</span>game<span class="operator">,</span> <span class="type"><a href="qstate.html">QState</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="qstate.html">QState</a></span>(parent)<span class="operator">,</span> scene(scene)<span class="operator">,</span> game(game)
{
}
<span class="type">void</span> WinState<span class="operator">::</span>onEntry(<span class="type"><a href="qevent.html">QEvent</a></span> <span class="operator">*</span>)
{
<span class="comment">//We clear the scene</span>
scene<span class="operator">-</span><span class="operator">&gt;</span>clearScene();
<span class="type"><a href="qstring.html">QString</a></span> message;
<span class="keyword">if</span> (scene<span class="operator">-</span><span class="operator">&gt;</span>levelsData<span class="operator">.</span>size() <span class="operator">-</span> <span class="number">1</span> <span class="operator">!</span><span class="operator">=</span> game<span class="operator">-</span><span class="operator">&gt;</span>currentLevel) {
message <span class="operator">=</span> <span class="type"><a href="qstring.html">QString</a></span>(<span class="string">&quot;You win the level %1. Your score is %2.\nPress Space to continue.&quot;</span>)<span class="operator">.</span>arg(game<span class="operator">-</span><span class="operator">&gt;</span>currentLevel<span class="operator">+</span><span class="number">1</span>)<span class="operator">.</span>arg(game<span class="operator">-</span><span class="operator">&gt;</span>score);
<span class="comment">//We increment the level number</span>
game<span class="operator">-</span><span class="operator">&gt;</span>currentLevel<span class="operator">+</span><span class="operator">+</span>;
} <span class="keyword">else</span> {
message <span class="operator">=</span> <span class="type"><a href="qstring.html">QString</a></span>(<span class="string">&quot;You finish the game on level %1. Your score is %2.&quot;</span>)<span class="operator">.</span>arg(game<span class="operator">-</span><span class="operator">&gt;</span>currentLevel<span class="operator">+</span><span class="number">1</span>)<span class="operator">.</span>arg(game<span class="operator">-</span><span class="operator">&gt;</span>score);
<span class="comment">//We set the level back to 0</span>
game<span class="operator">-</span><span class="operator">&gt;</span>currentLevel <span class="operator">=</span> <span class="number">0</span>;
<span class="comment">//We set the score back to 0</span>
game<span class="operator">-</span><span class="operator">&gt;</span>score <span class="operator">=</span> <span class="number">0</span>;
}
<span class="comment">//We inform the player</span>
scene<span class="operator">-</span><span class="operator">&gt;</span>textInformationItem<span class="operator">-</span><span class="operator">&gt;</span>setMessage(message);
scene<span class="operator">-</span><span class="operator">&gt;</span>textInformationItem<span class="operator">-</span><span class="operator">&gt;</span>show();
}
<span class="type">void</span> WinState<span class="operator">::</span>onExit(<span class="type"><a href="qevent.html">QEvent</a></span> <span class="operator">*</span>)
{
<span class="comment">//we hide the information</span>
scene<span class="operator">-</span><span class="operator">&gt;</span>textInformationItem<span class="operator">-</span><span class="operator">&gt;</span>hide();
}
<span class="comment">/** UpdateScore State */</span>
UpdateScoreState<span class="operator">::</span>UpdateScoreState(PlayState <span class="operator">*</span>g<span class="operator">,</span> <span class="type"><a href="qstate.html">QState</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="qstate.html">QState</a></span>(parent)<span class="operator">,</span> game(g)
{
}
<span class="comment">/** Win transition */</span>
UpdateScoreTransition<span class="operator">::</span>UpdateScoreTransition(GraphicsScene <span class="operator">*</span>scene<span class="operator">,</span> PlayState <span class="operator">*</span>game<span class="operator">,</span> <span class="type"><a href="qabstractstate.html">QAbstractState</a></span> <span class="operator">*</span>target)
: <span class="type"><a href="qsignaltransition.html">QSignalTransition</a></span>(scene<span class="operator">,</span>SIGNAL(subMarineDestroyed(<span class="type">int</span>)))<span class="operator">,</span>
game(game)<span class="operator">,</span> scene(scene)
{
setTargetState(target);
}
<span class="type">bool</span> UpdateScoreTransition<span class="operator">::</span>eventTest(<span class="type"><a href="qevent.html">QEvent</a></span> <span class="operator">*</span>event)
{
<span class="keyword">if</span> (<span class="operator">!</span><span class="type"><a href="qsignaltransition.html">QSignalTransition</a></span><span class="operator">::</span>eventTest(event))
<span class="keyword">return</span> <span class="keyword">false</span>;
<span class="type"><a href="qstatemachine.html">QStateMachine</a></span><span class="operator">::</span>SignalEvent <span class="operator">*</span>se <span class="operator">=</span> <span class="keyword">static_cast</span><span class="operator">&lt;</span><span class="type"><a href="qstatemachine.html">QStateMachine</a></span><span class="operator">::</span>SignalEvent<span class="operator">*</span><span class="operator">&gt;</span>(event);
game<span class="operator">-</span><span class="operator">&gt;</span>score <span class="operator">+</span><span class="operator">=</span> se<span class="operator">-</span><span class="operator">&gt;</span>arguments()<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">.</span>toInt();
scene<span class="operator">-</span><span class="operator">&gt;</span>progressItem<span class="operator">-</span><span class="operator">&gt;</span>setScore(game<span class="operator">-</span><span class="operator">&gt;</span>score);
<span class="keyword">return</span> <span class="keyword">true</span>;
}
<span class="comment">/** Win transition */</span>
WinTransition<span class="operator">::</span>WinTransition(GraphicsScene <span class="operator">*</span>scene<span class="operator">,</span> PlayState <span class="operator">*</span>game<span class="operator">,</span> <span class="type"><a href="qabstractstate.html">QAbstractState</a></span> <span class="operator">*</span>target)
: <span class="type"><a href="qsignaltransition.html">QSignalTransition</a></span>(scene<span class="operator">,</span>SIGNAL(allSubMarineDestroyed(<span class="type">int</span>)))<span class="operator">,</span>
game(game)<span class="operator">,</span> scene(scene)
{
setTargetState(target);
}
<span class="type">bool</span> WinTransition<span class="operator">::</span>eventTest(<span class="type"><a href="qevent.html">QEvent</a></span> <span class="operator">*</span>event)
{
<span class="keyword">if</span> (<span class="operator">!</span><span class="type"><a href="qsignaltransition.html">QSignalTransition</a></span><span class="operator">::</span>eventTest(event))
<span class="keyword">return</span> <span class="keyword">false</span>;
<span class="type"><a href="qstatemachine.html">QStateMachine</a></span><span class="operator">::</span>SignalEvent <span class="operator">*</span>se <span class="operator">=</span> <span class="keyword">static_cast</span><span class="operator">&lt;</span><span class="type"><a href="qstatemachine.html">QStateMachine</a></span><span class="operator">::</span>SignalEvent<span class="operator">*</span><span class="operator">&gt;</span>(event);
game<span class="operator">-</span><span class="operator">&gt;</span>score <span class="operator">+</span><span class="operator">=</span> se<span class="operator">-</span><span class="operator">&gt;</span>arguments()<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">.</span>toInt();
scene<span class="operator">-</span><span class="operator">&gt;</span>progressItem<span class="operator">-</span><span class="operator">&gt;</span>setScore(game<span class="operator">-</span><span class="operator">&gt;</span>score);
<span class="keyword">return</span> <span class="keyword">true</span>;
}
<span class="comment">/** Space transition */</span>
CustomSpaceTransition<span class="operator">::</span>CustomSpaceTransition(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>widget<span class="operator">,</span> PlayState <span class="operator">*</span>game<span class="operator">,</span> <span class="type"><a href="qevent.html">QEvent</a></span><span class="operator">::</span>Type type<span class="operator">,</span> <span class="type">int</span> key)
: <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span>(widget<span class="operator">,</span> type<span class="operator">,</span> key)<span class="operator">,</span>
game(game)
{
}
<span class="type">bool</span> CustomSpaceTransition<span class="operator">::</span>eventTest(<span class="type"><a href="qevent.html">QEvent</a></span> <span class="operator">*</span>event)
{
<span class="keyword">if</span> (<span class="operator">!</span><span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span><span class="operator">::</span>eventTest(event))
<span class="keyword">return</span> <span class="keyword">false</span>;
<span class="keyword">return</span> (game<span class="operator">-</span><span class="operator">&gt;</span>currentLevel <span class="operator">!</span><span class="operator">=</span> <span class="number">0</span>);
}</pre>
</div>
<!-- @@@demos/sub-attaq/states.cpp -->
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