473 lines
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<h1 class="title">boat.cpp Example File</h1>
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<span class="small-subtitle">demos/sub-attaq/boat.cpp</span>
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<!-- $$$demos/sub-attaq/boat.cpp-description -->
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<div class="descr"> <a name="details"></a>
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<pre class="cpp"> <span class="comment">/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/</span>
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<span class="comment">//Own</span>
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<span class="preprocessor">#include "boat.h"</span>
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<span class="preprocessor">#include "boat_p.h"</span>
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<span class="preprocessor">#include "bomb.h"</span>
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<span class="preprocessor">#include "pixmapitem.h"</span>
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<span class="preprocessor">#include "graphicsscene.h"</span>
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<span class="preprocessor">#include "animationmanager.h"</span>
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<span class="preprocessor">#include "qanimationstate.h"</span>
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<span class="comment">//Qt</span>
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<span class="preprocessor">#include <QtCore/QPropertyAnimation></span>
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<span class="preprocessor">#include <QtCore/QStateMachine></span>
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<span class="preprocessor">#include <QtCore/QHistoryState></span>
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<span class="preprocessor">#include <QtCore/QFinalState></span>
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<span class="preprocessor">#include <QtCore/QState></span>
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<span class="preprocessor">#include <QtCore/QSequentialAnimationGroup></span>
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<span class="keyword">static</span> <span class="type"><a href="qabstractanimation.html">QAbstractAnimation</a></span> <span class="operator">*</span>setupDestroyAnimation(Boat <span class="operator">*</span>boat)
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{
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<span class="type"><a href="qsequentialanimationgroup.html">QSequentialAnimationGroup</a></span> <span class="operator">*</span>group <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qsequentialanimationgroup.html">QSequentialAnimationGroup</a></span>(boat);
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<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">1</span>; i <span class="operator"><</span><span class="operator">=</span> <span class="number">4</span>; i<span class="operator">+</span><span class="operator">+</span>) {
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PixmapItem <span class="operator">*</span>step <span class="operator">=</span> <span class="keyword">new</span> PixmapItem(<span class="type"><a href="qstring.html">QString</a></span>(<span class="string">"explosion/boat/step%1"</span>)<span class="operator">.</span>arg(i)<span class="operator">,</span>GraphicsScene<span class="operator">::</span>Big<span class="operator">,</span> boat);
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step<span class="operator">-</span><span class="operator">></span>setZValue(<span class="number">6</span>);
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step<span class="operator">-</span><span class="operator">></span>setOpacity(<span class="number">0</span>);
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<span class="comment">//fade-in</span>
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<span class="type"><a href="qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>anim <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpropertyanimation.html">QPropertyAnimation</a></span>(step<span class="operator">,</span> <span class="string">"opacity"</span>);
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anim<span class="operator">-</span><span class="operator">></span>setEndValue(<span class="number">1</span>);
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anim<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">100</span>);
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group<span class="operator">-</span><span class="operator">></span>insertAnimation(i<span class="operator">-</span><span class="number">1</span><span class="operator">,</span> anim);
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<span class="comment">//and then fade-out</span>
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<span class="type"><a href="qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>anim2 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpropertyanimation.html">QPropertyAnimation</a></span>(step<span class="operator">,</span> <span class="string">"opacity"</span>);
|
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anim2<span class="operator">-</span><span class="operator">></span>setEndValue(<span class="number">0</span>);
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anim2<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">100</span>);
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group<span class="operator">-</span><span class="operator">></span>addAnimation(anim2);
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}
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AnimationManager<span class="operator">::</span>self()<span class="operator">-</span><span class="operator">></span>registerAnimation(group);
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<span class="keyword">return</span> group;
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}
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Boat<span class="operator">::</span>Boat() : PixmapItem(<span class="type"><a href="qstring.html">QString</a></span>(<span class="string">"boat"</span>)<span class="operator">,</span> GraphicsScene<span class="operator">::</span>Big)<span class="operator">,</span>
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speed(<span class="number">0</span>)<span class="operator">,</span> bombsAlreadyLaunched(<span class="number">0</span>)<span class="operator">,</span> direction(Boat<span class="operator">::</span>None)<span class="operator">,</span> movementAnimation(<span class="number">0</span>)
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{
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setZValue(<span class="number">4</span>);
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setFlags(<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span><span class="operator">::</span>ItemIsFocusable);
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<span class="comment">//The movement animation used to animate the boat</span>
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movementAnimation <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpropertyanimation.html">QPropertyAnimation</a></span>(<span class="keyword">this</span><span class="operator">,</span> <span class="string">"pos"</span>);
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<span class="comment">//The destroy animation used to explode the boat</span>
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destroyAnimation <span class="operator">=</span> setupDestroyAnimation(<span class="keyword">this</span>);
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<span class="comment">//We setup the state machine of the boat</span>
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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>);
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|
<span class="type"><a href="qstate.html">QState</a></span> <span class="operator">*</span>moving <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qstate.html">QState</a></span>(machine);
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|
StopState <span class="operator">*</span>stopState <span class="operator">=</span> <span class="keyword">new</span> StopState(<span class="keyword">this</span><span class="operator">,</span> moving);
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machine<span class="operator">-</span><span class="operator">></span>setInitialState(moving);
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moving<span class="operator">-</span><span class="operator">></span>setInitialState(stopState);
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MoveStateRight <span class="operator">*</span>moveStateRight <span class="operator">=</span> <span class="keyword">new</span> MoveStateRight(<span class="keyword">this</span><span class="operator">,</span> moving);
|
|
MoveStateLeft <span class="operator">*</span>moveStateLeft <span class="operator">=</span> <span class="keyword">new</span> MoveStateLeft(<span class="keyword">this</span><span class="operator">,</span> moving);
|
|
LaunchStateRight <span class="operator">*</span>launchStateRight <span class="operator">=</span> <span class="keyword">new</span> LaunchStateRight(<span class="keyword">this</span><span class="operator">,</span> machine);
|
|
LaunchStateLeft <span class="operator">*</span>launchStateLeft <span class="operator">=</span> <span class="keyword">new</span> LaunchStateLeft(<span class="keyword">this</span><span class="operator">,</span> machine);
|
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|
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<span class="comment">//then setup the transitions for the rightMove state</span>
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KeyStopTransition <span class="operator">*</span>leftStopRight <span class="operator">=</span> <span class="keyword">new</span> KeyStopTransition(<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_Left);
|
|
leftStopRight<span class="operator">-</span><span class="operator">></span>setTargetState(stopState);
|
|
KeyMoveTransition <span class="operator">*</span>leftMoveRight <span class="operator">=</span> <span class="keyword">new</span> KeyMoveTransition(<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_Left);
|
|
leftMoveRight<span class="operator">-</span><span class="operator">></span>setTargetState(moveStateRight);
|
|
KeyMoveTransition <span class="operator">*</span>rightMoveRight <span class="operator">=</span> <span class="keyword">new</span> KeyMoveTransition(<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_Right);
|
|
rightMoveRight<span class="operator">-</span><span class="operator">></span>setTargetState(moveStateRight);
|
|
KeyMoveTransition <span class="operator">*</span>rightMoveStop <span class="operator">=</span> <span class="keyword">new</span> KeyMoveTransition(<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_Right);
|
|
rightMoveStop<span class="operator">-</span><span class="operator">></span>setTargetState(moveStateRight);
|
|
|
|
<span class="comment">//then setup the transitions for the leftMove state</span>
|
|
KeyStopTransition <span class="operator">*</span>rightStopLeft <span class="operator">=</span> <span class="keyword">new</span> KeyStopTransition(<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_Right);
|
|
rightStopLeft<span class="operator">-</span><span class="operator">></span>setTargetState(stopState);
|
|
KeyMoveTransition <span class="operator">*</span>rightMoveLeft <span class="operator">=</span> <span class="keyword">new</span> KeyMoveTransition(<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_Right);
|
|
rightMoveLeft<span class="operator">-</span><span class="operator">></span>setTargetState(moveStateLeft);
|
|
KeyMoveTransition <span class="operator">*</span>leftMoveLeft <span class="operator">=</span> <span class="keyword">new</span> KeyMoveTransition(<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_Left);
|
|
leftMoveLeft<span class="operator">-</span><span class="operator">></span>setTargetState(moveStateLeft);
|
|
KeyMoveTransition <span class="operator">*</span>leftMoveStop <span class="operator">=</span> <span class="keyword">new</span> KeyMoveTransition(<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_Left);
|
|
leftMoveStop<span class="operator">-</span><span class="operator">></span>setTargetState(moveStateLeft);
|
|
|
|
<span class="comment">//We set up the right move state</span>
|
|
moveStateRight<span class="operator">-</span><span class="operator">></span>addTransition(leftStopRight);
|
|
moveStateRight<span class="operator">-</span><span class="operator">></span>addTransition(leftMoveRight);
|
|
moveStateRight<span class="operator">-</span><span class="operator">></span>addTransition(rightMoveRight);
|
|
stopState<span class="operator">-</span><span class="operator">></span>addTransition(rightMoveStop);
|
|
|
|
<span class="comment">//We set up the left move state</span>
|
|
moveStateLeft<span class="operator">-</span><span class="operator">></span>addTransition(rightStopLeft);
|
|
moveStateLeft<span class="operator">-</span><span class="operator">></span>addTransition(leftMoveLeft);
|
|
moveStateLeft<span class="operator">-</span><span class="operator">></span>addTransition(rightMoveLeft);
|
|
stopState<span class="operator">-</span><span class="operator">></span>addTransition(leftMoveStop);
|
|
|
|
<span class="comment">//The animation is finished, it means we reached the border of the screen, the boat is stopped so we move to the stop state</span>
|
|
moveStateLeft<span class="operator">-</span><span class="operator">></span>addTransition(movementAnimation<span class="operator">,</span> SIGNAL(finished())<span class="operator">,</span> stopState);
|
|
moveStateRight<span class="operator">-</span><span class="operator">></span>addTransition(movementAnimation<span class="operator">,</span> SIGNAL(finished())<span class="operator">,</span> stopState);
|
|
|
|
<span class="comment">//We set up the keys for dropping bombs</span>
|
|
KeyLaunchTransition <span class="operator">*</span>upFireLeft <span class="operator">=</span> <span class="keyword">new</span> KeyLaunchTransition(<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_Up);
|
|
upFireLeft<span class="operator">-</span><span class="operator">></span>setTargetState(launchStateRight);
|
|
KeyLaunchTransition <span class="operator">*</span>upFireRight <span class="operator">=</span> <span class="keyword">new</span> KeyLaunchTransition(<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_Up);
|
|
upFireRight<span class="operator">-</span><span class="operator">></span>setTargetState(launchStateRight);
|
|
KeyLaunchTransition <span class="operator">*</span>upFireStop <span class="operator">=</span> <span class="keyword">new</span> KeyLaunchTransition(<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_Up);
|
|
upFireStop<span class="operator">-</span><span class="operator">></span>setTargetState(launchStateRight);
|
|
KeyLaunchTransition <span class="operator">*</span>downFireLeft <span class="operator">=</span> <span class="keyword">new</span> KeyLaunchTransition(<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_Down);
|
|
downFireLeft<span class="operator">-</span><span class="operator">></span>setTargetState(launchStateLeft);
|
|
KeyLaunchTransition <span class="operator">*</span>downFireRight <span class="operator">=</span> <span class="keyword">new</span> KeyLaunchTransition(<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_Down);
|
|
downFireRight<span class="operator">-</span><span class="operator">></span>setTargetState(launchStateLeft);
|
|
KeyLaunchTransition <span class="operator">*</span>downFireMove <span class="operator">=</span> <span class="keyword">new</span> KeyLaunchTransition(<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_Down);
|
|
downFireMove<span class="operator">-</span><span class="operator">></span>setTargetState(launchStateLeft);
|
|
|
|
<span class="comment">//We set up transitions for fire up</span>
|
|
moveStateRight<span class="operator">-</span><span class="operator">></span>addTransition(upFireRight);
|
|
moveStateLeft<span class="operator">-</span><span class="operator">></span>addTransition(upFireLeft);
|
|
stopState<span class="operator">-</span><span class="operator">></span>addTransition(upFireStop);
|
|
|
|
<span class="comment">//We set up transitions for fire down</span>
|
|
moveStateRight<span class="operator">-</span><span class="operator">></span>addTransition(downFireRight);
|
|
moveStateLeft<span class="operator">-</span><span class="operator">></span>addTransition(downFireLeft);
|
|
stopState<span class="operator">-</span><span class="operator">></span>addTransition(downFireMove);
|
|
|
|
<span class="comment">//Finally the launch state should come back to its original state</span>
|
|
<span class="type"><a href="qhistorystate.html">QHistoryState</a></span> <span class="operator">*</span>historyState <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhistorystate.html">QHistoryState</a></span>(moving);
|
|
launchStateLeft<span class="operator">-</span><span class="operator">></span>addTransition(historyState);
|
|
launchStateRight<span class="operator">-</span><span class="operator">></span>addTransition(historyState);
|
|
|
|
<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 state play the destroyed animation</span>
|
|
<span class="type">QAnimationState</span> <span class="operator">*</span>destroyedState <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QAnimationState</span>(machine);
|
|
destroyedState<span class="operator">-</span><span class="operator">></span>setAnimation(destroyAnimation);
|
|
|
|
<span class="comment">//Play a nice animation when the boat is destroyed</span>
|
|
moving<span class="operator">-</span><span class="operator">></span>addTransition(<span class="keyword">this</span><span class="operator">,</span> SIGNAL(boatDestroyed())<span class="operator">,</span> destroyedState);
|
|
|
|
<span class="comment">//Transition to final state when the destroyed animation is finished</span>
|
|
destroyedState<span class="operator">-</span><span class="operator">></span>addTransition(destroyedState<span class="operator">,</span> SIGNAL(animationFinished())<span class="operator">,</span> final);
|
|
|
|
<span class="comment">//The machine has finished to be executed, then the boat is dead</span>
|
|
connect(machine<span class="operator">,</span>SIGNAL(finished())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SIGNAL(boatExecutionFinished()));
|
|
|
|
}
|
|
|
|
<span class="type">void</span> Boat<span class="operator">::</span>run()
|
|
{
|
|
<span class="comment">//We register animations</span>
|
|
AnimationManager<span class="operator">::</span>self()<span class="operator">-</span><span class="operator">></span>registerAnimation(movementAnimation);
|
|
AnimationManager<span class="operator">::</span>self()<span class="operator">-</span><span class="operator">></span>registerAnimation(destroyAnimation);
|
|
machine<span class="operator">-</span><span class="operator">></span>start();
|
|
}
|
|
|
|
<span class="type">void</span> Boat<span class="operator">::</span>stop()
|
|
{
|
|
movementAnimation<span class="operator">-</span><span class="operator">></span>stop();
|
|
machine<span class="operator">-</span><span class="operator">></span>stop();
|
|
}
|
|
|
|
<span class="type">void</span> Boat<span class="operator">::</span>updateBoatMovement()
|
|
{
|
|
<span class="keyword">if</span> (speed <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span> <span class="operator">|</span><span class="operator">|</span> direction <span class="operator">=</span><span class="operator">=</span> Boat<span class="operator">::</span>None) {
|
|
movementAnimation<span class="operator">-</span><span class="operator">></span>stop();
|
|
<span class="keyword">return</span>;
|
|
}
|
|
|
|
movementAnimation<span class="operator">-</span><span class="operator">></span>stop();
|
|
|
|
<span class="keyword">if</span> (direction <span class="operator">=</span><span class="operator">=</span> Boat<span class="operator">::</span>Left) {
|
|
movementAnimation<span class="operator">-</span><span class="operator">></span>setEndValue(<span class="type"><a href="qpointf.html">QPointF</a></span>(<span class="number">0</span><span class="operator">,</span>y()));
|
|
movementAnimation<span class="operator">-</span><span class="operator">></span>setDuration(x()<span class="operator">/</span>speed<span class="operator">*</span><span class="number">15</span>);
|
|
}
|
|
<span class="keyword">else</span> <span class="comment">/*if (direction == Boat::Right)*/</span> {
|
|
movementAnimation<span class="operator">-</span><span class="operator">></span>setEndValue(<span class="type"><a href="qpointf.html">QPointF</a></span>(scene()<span class="operator">-</span><span class="operator">></span>width()<span class="operator">-</span>size()<span class="operator">.</span>width()<span class="operator">,</span>y()));
|
|
movementAnimation<span class="operator">-</span><span class="operator">></span>setDuration((scene()<span class="operator">-</span><span class="operator">></span>width()<span class="operator">-</span>size()<span class="operator">.</span>width()<span class="operator">-</span>x())<span class="operator">/</span>speed<span class="operator">*</span><span class="number">15</span>);
|
|
}
|
|
movementAnimation<span class="operator">-</span><span class="operator">></span>start();
|
|
}
|
|
|
|
<span class="type">void</span> Boat<span class="operator">::</span>destroy()
|
|
{
|
|
movementAnimation<span class="operator">-</span><span class="operator">></span>stop();
|
|
<span class="keyword">emit</span> boatDestroyed();
|
|
}
|
|
|
|
<span class="type">int</span> Boat<span class="operator">::</span>bombsLaunched() <span class="keyword">const</span>
|
|
{
|
|
<span class="keyword">return</span> bombsAlreadyLaunched;
|
|
}
|
|
|
|
<span class="type">void</span> Boat<span class="operator">::</span>setBombsLaunched(<span class="type">int</span> number)
|
|
{
|
|
<span class="keyword">if</span> (number <span class="operator">></span> MAX_BOMB) {
|
|
<a href="qtglobal.html#qWarning">qWarning</a>(<span class="string">"Boat::setBombsLaunched : It impossible to launch that number of bombs"</span>);
|
|
<span class="keyword">return</span>;
|
|
}
|
|
bombsAlreadyLaunched <span class="operator">=</span> number;
|
|
}
|
|
|
|
<span class="type">int</span> Boat<span class="operator">::</span>currentSpeed() <span class="keyword">const</span>
|
|
{
|
|
<span class="keyword">return</span> speed;
|
|
}
|
|
|
|
<span class="type">void</span> Boat<span class="operator">::</span>setCurrentSpeed(<span class="type">int</span> speed)
|
|
{
|
|
<span class="keyword">if</span> (speed <span class="operator">></span> <span class="number">3</span> <span class="operator">|</span><span class="operator">|</span> speed <span class="operator"><</span> <span class="number">0</span>) {
|
|
<a href="qtglobal.html#qWarning">qWarning</a>(<span class="string">"Boat::setCurrentSpeed: The boat can't run on that speed"</span>);
|
|
<span class="keyword">return</span>;
|
|
}
|
|
<span class="keyword">this</span><span class="operator">-</span><span class="operator">></span>speed <span class="operator">=</span> speed;
|
|
}
|
|
|
|
<span class="keyword">enum</span> Boat<span class="operator">::</span>Movement Boat<span class="operator">::</span>currentDirection() <span class="keyword">const</span>
|
|
{
|
|
<span class="keyword">return</span> direction;
|
|
}
|
|
|
|
<span class="type">void</span> Boat<span class="operator">::</span>setCurrentDirection(Movement direction)
|
|
{
|
|
<span class="keyword">this</span><span class="operator">-</span><span class="operator">></span>direction <span class="operator">=</span> direction;
|
|
}
|
|
|
|
<span class="type">int</span> Boat<span class="operator">::</span>type() <span class="keyword">const</span>
|
|
{
|
|
<span class="keyword">return</span> Type;
|
|
}</pre>
|
|
</div>
|
|
<!-- @@@demos/sub-attaq/boat.cpp -->
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="ft">
|
|
<span></span>
|
|
</div>
|
|
</div>
|
|
<div class="footer">
|
|
<p>
|
|
<acronym title="Copyright">©</acronym> 2015 The Qt Company Ltd.
|
|
Documentation contributions included herein are the copyrights of
|
|
their respective owners.</p>
|
|
<br />
|
|
<p>
|
|
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.</p>
|
|
<p>
|
|
Documentation sources may be obtained from <a href="http://www.qt-project.org">
|
|
www.qt-project.org</a>.</p>
|
|
<br />
|
|
<p>
|
|
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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of their respective owners. <a title="Privacy Policy"
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href="http://en.gitorious.org/privacy_policy/">Privacy Policy</a></p>
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