317 lines
18 KiB
HTML
317 lines
18 KiB
HTML
<?xml version="1.0" encoding="UTF-8"?>
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
|
|
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en_US" lang="en_US">
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
<title>Qt 4.8: torpedo.cpp Example File (demos/sub-attaq/torpedo.cpp)</title>
|
|
<link rel="stylesheet" type="text/css" href="style/style.css" />
|
|
<script src="scripts/jquery.js" type="text/javascript"></script>
|
|
<script src="scripts/functions.js" type="text/javascript"></script>
|
|
<link rel="stylesheet" type="text/css" href="style/superfish.css" />
|
|
<link rel="stylesheet" type="text/css" href="style/narrow.css" />
|
|
<!--[if IE]>
|
|
<meta name="MSSmartTagsPreventParsing" content="true">
|
|
<meta http-equiv="imagetoolbar" content="no">
|
|
<![endif]-->
|
|
<!--[if lt IE 7]>
|
|
<link rel="stylesheet" type="text/css" href="style/style_ie6.css">
|
|
<![endif]-->
|
|
<!--[if IE 7]>
|
|
<link rel="stylesheet" type="text/css" href="style/style_ie7.css">
|
|
<![endif]-->
|
|
<!--[if IE 8]>
|
|
<link rel="stylesheet" type="text/css" href="style/style_ie8.css">
|
|
<![endif]-->
|
|
|
|
<script src="scripts/superfish.js" type="text/javascript"></script>
|
|
<script src="scripts/narrow.js" type="text/javascript"></script>
|
|
|
|
</head>
|
|
<body class="" onload="CheckEmptyAndLoadList();">
|
|
<div class="header" id="qtdocheader">
|
|
<div class="content">
|
|
<div id="nav-logo">
|
|
<a href="index.html">Home</a></div>
|
|
<a href="index.html" class="qtref"><span>Qt Reference Documentation</span></a>
|
|
<div id="narrowsearch"></div>
|
|
<div id="nav-topright">
|
|
<ul>
|
|
<li class="nav-topright-home"><a href="http://qt.digia.com/">Qt HOME</a></li>
|
|
<li class="nav-topright-dev"><a href="http://qt-project.org/">DEV</a></li>
|
|
<li class="nav-topright-doc nav-topright-doc-active"><a href="http://qt-project.org/doc/">
|
|
DOC</a></li>
|
|
<li class="nav-topright-blog"><a href="http://blog.qt.digia.com/">BLOG</a></li>
|
|
</ul>
|
|
</div>
|
|
<div id="shortCut">
|
|
<ul>
|
|
<li class="shortCut-topleft-inactive"><span><a href="index.html">Qt 4.8</a></span></li>
|
|
<li class="shortCut-topleft-active"><a href="http://qt-project.org/doc/">ALL VERSIONS </a></li>
|
|
</ul>
|
|
</div>
|
|
<ul class="sf-menu" id="narrowmenu">
|
|
<li><a href="#">API Lookup</a>
|
|
<ul>
|
|
<li><a href="classes.html">Class index</a></li>
|
|
<li><a href="functions.html">Function index</a></li>
|
|
<li><a href="modules.html">Modules</a></li>
|
|
<li><a href="namespaces.html">Namespaces</a></li>
|
|
<li><a href="qtglobal.html">Global Declarations</a></li>
|
|
<li><a href="qdeclarativeelements.html">QML elements</a></li>
|
|
</ul>
|
|
</li>
|
|
<li><a href="#">Qt Topics</a>
|
|
<ul>
|
|
<li><a href="qt-basic-concepts.html">Programming with Qt</a></li>
|
|
<li><a href="qtquick.html">Device UIs & Qt Quick</a></li>
|
|
<li><a href="qt-gui-concepts.html">UI Design with Qt</a></li>
|
|
<li><a href="supported-platforms.html">Supported Platforms</a></li>
|
|
<li><a href="technology-apis.html">Qt and Key Technologies</a></li>
|
|
<li><a href="best-practices.html">How-To's and Best Practices</a></li>
|
|
</ul>
|
|
</li>
|
|
<li><a href="#">Examples</a>
|
|
<ul>
|
|
<li><a href="all-examples.html">Examples</a></li>
|
|
<li><a href="tutorials.html">Tutorials</a></li>
|
|
<li><a href="demos.html">Demos</a></li>
|
|
<li><a href="qdeclarativeexamples.html">QML Examples</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
<div class="wrapper">
|
|
<div class="hd">
|
|
<span></span>
|
|
</div>
|
|
<div class="bd group">
|
|
<div class="sidebar">
|
|
<div class="searchlabel">
|
|
Search index:</div>
|
|
<div class="search" id="sidebarsearch">
|
|
<form id="qtdocsearch" action="" onsubmit="return false;">
|
|
<fieldset>
|
|
<input type="text" name="searchstring" id="pageType" value="" />
|
|
<div id="resultdialog">
|
|
<a href="#" id="resultclose">Close</a>
|
|
<p id="resultlinks" class="all"><a href="#" id="showallresults">All</a> | <a href="#" id="showapiresults">API</a> | <a href="#" id="showarticleresults">Articles</a> | <a href="#" id="showexampleresults">Examples</a></p>
|
|
<p id="searchcount" class="all"><span id="resultcount"></span><span id="apicount"></span><span id="articlecount"></span><span id="examplecount"></span> results:</p>
|
|
<ul id="resultlist" class="all">
|
|
</ul>
|
|
</div>
|
|
</fieldset>
|
|
</form>
|
|
</div>
|
|
<div class="box first bottombar" id="lookup">
|
|
<h2 title="API Lookup"><span></span>
|
|
API Lookup</h2>
|
|
<div id="list001" class="list">
|
|
<ul id="ul001" >
|
|
<li class="defaultLink"><a href="classes.html">Class index</a></li>
|
|
<li class="defaultLink"><a href="functions.html">Function index</a></li>
|
|
<li class="defaultLink"><a href="modules.html">Modules</a></li>
|
|
<li class="defaultLink"><a href="namespaces.html">Namespaces</a></li>
|
|
<li class="defaultLink"><a href="qtglobal.html">Global Declarations</a></li>
|
|
<li class="defaultLink"><a href="qdeclarativeelements.html">QML elements</a></li>
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
<div class="box bottombar" id="topics">
|
|
<h2 title="Qt Topics"><span></span>
|
|
Qt Topics</h2>
|
|
<div id="list002" class="list">
|
|
<ul id="ul002" >
|
|
<li class="defaultLink"><a href="qt-basic-concepts.html">Programming with Qt</a></li>
|
|
<li class="defaultLink"><a href="qtquick.html">Device UIs & Qt Quick</a></li>
|
|
<li class="defaultLink"><a href="qt-gui-concepts.html">UI Design with Qt</a></li>
|
|
<li class="defaultLink"><a href="supported-platforms.html">Supported Platforms</a></li>
|
|
<li class="defaultLink"><a href="technology-apis.html">Qt and Key Technologies</a></li>
|
|
<li class="defaultLink"><a href="best-practices.html">How-To's and Best Practices</a></li>
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
<div class="box" id="examples">
|
|
<h2 title="Examples"><span></span>
|
|
Examples</h2>
|
|
<div id="list003" class="list">
|
|
<ul id="ul003">
|
|
<li class="defaultLink"><a href="all-examples.html">Examples</a></li>
|
|
<li class="defaultLink"><a href="tutorials.html">Tutorials</a></li>
|
|
<li class="defaultLink"><a href="demos.html">Demos</a></li>
|
|
<li class="defaultLink"><a href="qdeclarativeexamples.html">QML Examples</a></li>
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="wrap">
|
|
<div class="toolbar">
|
|
<div class="breadcrumb toolblock">
|
|
<ul>
|
|
<li class="first"><a href="index.html">Home</a></li>
|
|
<!-- Breadcrumbs go here -->
|
|
</ul>
|
|
</div>
|
|
<div class="toolbuttons toolblock">
|
|
<ul>
|
|
<li id="smallA" class="t_button">A</li>
|
|
<li id="medA" class="t_button active">A</li>
|
|
<li id="bigA" class="t_button">A</li>
|
|
<li id="print" class="t_button"><a href="javascript:this.print();">
|
|
<span>Print</span></a></li>
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
<div class="content mainContent">
|
|
<h1 class="title">torpedo.cpp Example File</h1>
|
|
<span class="small-subtitle">demos/sub-attaq/torpedo.cpp</span>
|
|
<!-- $$$demos/sub-attaq/torpedo.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 "torpedo.h"</span>
|
|
<span class="preprocessor">#include "pixmapitem.h"</span>
|
|
<span class="preprocessor">#include "boat.h"</span>
|
|
<span class="preprocessor">#include "graphicsscene.h"</span>
|
|
<span class="preprocessor">#include "animationmanager.h"</span>
|
|
<span class="preprocessor">#include "qanimationstate.h"</span>
|
|
|
|
<span class="preprocessor">#include <QtCore/QPropertyAnimation></span>
|
|
<span class="preprocessor">#include <QtCore/QStateMachine></span>
|
|
<span class="preprocessor">#include <QtCore/QFinalState></span>
|
|
|
|
Torpedo<span class="operator">::</span>Torpedo() : PixmapItem(<span class="type"><a href="qstring.html">QString</a></span><span class="operator">::</span>fromLatin1(<span class="string">"torpedo"</span>)<span class="operator">,</span>GraphicsScene<span class="operator">::</span>Big)<span class="operator">,</span>
|
|
currentSpeed(<span class="number">0</span>)
|
|
{
|
|
setZValue(<span class="number">2</span>);
|
|
}
|
|
|
|
<span class="type">void</span> Torpedo<span class="operator">::</span>launch()
|
|
{
|
|
<span class="type"><a href="qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>launchAnimation <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>);
|
|
AnimationManager<span class="operator">::</span>self()<span class="operator">-</span><span class="operator">></span>registerAnimation(launchAnimation);
|
|
launchAnimation<span class="operator">-</span><span class="operator">></span>setEndValue(<span class="type"><a href="qpointf.html">QPointF</a></span>(x()<span class="operator">,</span>qobject_cast<span class="operator"><</span>GraphicsScene <span class="operator">*</span><span class="operator">></span>(scene())<span class="operator">-</span><span class="operator">></span>sealLevel() <span class="operator">-</span> <span class="number">15</span>));
|
|
launchAnimation<span class="operator">-</span><span class="operator">></span>setEasingCurve(<span class="type"><a href="qeasingcurve.html">QEasingCurve</a></span><span class="operator">::</span>InQuad);
|
|
launchAnimation<span class="operator">-</span><span class="operator">></span>setDuration(y()<span class="operator">/</span>currentSpeed<span class="operator">*</span><span class="number">10</span>);
|
|
connect(launchAnimation<span class="operator">,</span>SIGNAL(valueChanged(<span class="type"><a href="qvariant.html">QVariant</a></span>))<span class="operator">,</span><span class="keyword">this</span><span class="operator">,</span>SLOT(onAnimationLaunchValueChanged(<span class="type"><a href="qvariant.html">QVariant</a></span>)));
|
|
connect(<span class="keyword">this</span><span class="operator">,</span>SIGNAL(torpedoExploded())<span class="operator">,</span> launchAnimation<span class="operator">,</span> SLOT(stop()));
|
|
|
|
<span class="comment">//We setup the state machine of the torpedo</span>
|
|
<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 launch animation is playing</span>
|
|
<span class="type">QAnimationState</span> <span class="operator">*</span>launched <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QAnimationState</span>(machine);
|
|
launched<span class="operator">-</span><span class="operator">></span>setAnimation(launchAnimation);
|
|
|
|
<span class="comment">//End</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);
|
|
|
|
machine<span class="operator">-</span><span class="operator">></span>setInitialState(launched);
|
|
|
|
<span class="comment">//### Add a nice animation when the torpedo is destroyed</span>
|
|
launched<span class="operator">-</span><span class="operator">></span>addTransition(<span class="keyword">this</span><span class="operator">,</span> SIGNAL(torpedoExploded())<span class="operator">,</span>final);
|
|
|
|
<span class="comment">//If the animation is finished, then we move to the final state</span>
|
|
launched<span class="operator">-</span><span class="operator">></span>addTransition(launched<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(torpedoExecutionFinished()));
|
|
|
|
machine<span class="operator">-</span><span class="operator">></span>start();
|
|
}
|
|
|
|
<span class="type">void</span> Torpedo<span class="operator">::</span>setCurrentSpeed(<span class="type">int</span> speed)
|
|
{
|
|
<span class="keyword">if</span> (speed <span class="operator"><</span> <span class="number">0</span>) {
|
|
<a href="qtglobal.html#qWarning">qWarning</a>(<span class="string">"Torpedo::setCurrentSpeed : The speed is invalid"</span>);
|
|
<span class="keyword">return</span>;
|
|
}
|
|
currentSpeed <span class="operator">=</span> speed;
|
|
}
|
|
|
|
<span class="type">void</span> Torpedo<span class="operator">::</span>onAnimationLaunchValueChanged(<span class="keyword">const</span> <span class="type"><a href="qvariant.html">QVariant</a></span> <span class="operator">&</span>)
|
|
{
|
|
foreach (<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>item <span class="operator">,</span> collidingItems(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>IntersectsItemBoundingRect)) {
|
|
<span class="keyword">if</span> (Boat <span class="operator">*</span>b <span class="operator">=</span> qgraphicsitem_cast<span class="operator"><</span>Boat<span class="operator">*</span><span class="operator">></span>(item))
|
|
b<span class="operator">-</span><span class="operator">></span>destroy();
|
|
}
|
|
}
|
|
|
|
<span class="type">void</span> Torpedo<span class="operator">::</span>destroy()
|
|
{
|
|
<span class="keyword">emit</span> torpedoExploded();
|
|
}</pre>
|
|
</div>
|
|
<!-- @@@demos/sub-attaq/torpedo.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
|
|
of their respective owners. <a title="Privacy Policy"
|
|
href="http://en.gitorious.org/privacy_policy/">Privacy Policy</a></p>
|
|
</div>
|
|
|
|
<script src="scripts/functions.js" type="text/javascript"></script>
|
|
</body>
|
|
</html>
|