<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>game.cpp Example File | Qt Core 5.12.2</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtcore-index.html">Qt Core</a></td><td ><a href="qtcore-serialization-savegame-example.html">JSON Save Game Example</a></td><td >game.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtcore-index.html">Qt 5.12.2 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">game.cpp Example File</h1> <span class="subtitle">serialization/savegame/game.cpp</span> <!-- $$$serialization/savegame/game.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "game.h"</span> <span class="preprocessor">#include <QFile></span> <span class="preprocessor">#include <QJsonArray></span> <span class="preprocessor">#include <QJsonDocument></span> <span class="preprocessor">#include <QRandomGenerator></span> <span class="preprocessor">#include <QTextStream></span> Character Game<span class="operator">::</span>player() <span class="keyword">const</span> { <span class="keyword">return</span> mPlayer; } <span class="type"><a href="qvector.html">QVector</a></span><span class="operator"><</span>Level<span class="operator">></span> Game<span class="operator">::</span>levels() <span class="keyword">const</span> { <span class="keyword">return</span> mLevels; } <span class="type">void</span> Game<span class="operator">::</span>newGame() { mPlayer <span class="operator">=</span> Character(); mPlayer<span class="operator">.</span>setName(<span class="type"><a href="qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"Hero"</span>)); mPlayer<span class="operator">.</span>setClassType(Character<span class="operator">::</span>Archer); mPlayer<span class="operator">.</span>setLevel(<span class="type"><a href="qrandomgenerator.html">QRandomGenerator</a></span><span class="operator">::</span>global()<span class="operator">-</span><span class="operator">></span>bounded(<span class="number">15</span><span class="operator">,</span> <span class="number">21</span>)); mLevels<span class="operator">.</span>clear(); mLevels<span class="operator">.</span>reserve(<span class="number">2</span>); Level village(<span class="type"><a href="qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"Village"</span>)); <span class="type"><a href="qvector.html">QVector</a></span><span class="operator"><</span>Character<span class="operator">></span> villageNpcs; villageNpcs<span class="operator">.</span>reserve(<span class="number">2</span>); villageNpcs<span class="operator">.</span>append(Character(<span class="type"><a href="qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"Barry the Blacksmith"</span>)<span class="operator">,</span> <span class="type"><a href="qrandomgenerator.html">QRandomGenerator</a></span><span class="operator">::</span>global()<span class="operator">-</span><span class="operator">></span>bounded(<span class="number">8</span><span class="operator">,</span> <span class="number">11</span>)<span class="operator">,</span> Character<span class="operator">::</span>Warrior)); villageNpcs<span class="operator">.</span>append(Character(<span class="type"><a href="qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"Terry the Trader"</span>)<span class="operator">,</span> <span class="type"><a href="qrandomgenerator.html">QRandomGenerator</a></span><span class="operator">::</span>global()<span class="operator">-</span><span class="operator">></span>bounded(<span class="number">6</span><span class="operator">,</span> <span class="number">8</span>)<span class="operator">,</span> Character<span class="operator">::</span>Warrior)); village<span class="operator">.</span>setNpcs(villageNpcs); mLevels<span class="operator">.</span>append(village); Level dungeon(<span class="type"><a href="qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"Dungeon"</span>)); <span class="type"><a href="qvector.html">QVector</a></span><span class="operator"><</span>Character<span class="operator">></span> dungeonNpcs; dungeonNpcs<span class="operator">.</span>reserve(<span class="number">3</span>); dungeonNpcs<span class="operator">.</span>append(Character(<span class="type"><a href="qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"Eric the Evil"</span>)<span class="operator">,</span> <span class="type"><a href="qrandomgenerator.html">QRandomGenerator</a></span><span class="operator">::</span>global()<span class="operator">-</span><span class="operator">></span>bounded(<span class="number">18</span><span class="operator">,</span> <span class="number">26</span>)<span class="operator">,</span> Character<span class="operator">::</span>Mage)); dungeonNpcs<span class="operator">.</span>append(Character(<span class="type"><a href="qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"Eric's Left Minion"</span>)<span class="operator">,</span> <span class="type"><a href="qrandomgenerator.html">QRandomGenerator</a></span><span class="operator">::</span>global()<span class="operator">-</span><span class="operator">></span>bounded(<span class="number">5</span><span class="operator">,</span> <span class="number">7</span>)<span class="operator">,</span> Character<span class="operator">::</span>Warrior)); dungeonNpcs<span class="operator">.</span>append(Character(<span class="type"><a href="qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"Eric's Right Minion"</span>)<span class="operator">,</span> <span class="type"><a href="qrandomgenerator.html">QRandomGenerator</a></span><span class="operator">::</span>global()<span class="operator">-</span><span class="operator">></span>bounded(<span class="number">4</span><span class="operator">,</span> <span class="number">9</span>)<span class="operator">,</span> Character<span class="operator">::</span>Warrior)); dungeon<span class="operator">.</span>setNpcs(dungeonNpcs); mLevels<span class="operator">.</span>append(dungeon); } bool Game<span class="operator">::</span>loadGame(Game<span class="operator">::</span>SaveFormat saveFormat) { <span class="type"><a href="qfile.html">QFile</a></span> loadFile(saveFormat <span class="operator">=</span><span class="operator">=</span> Json <span class="operator">?</span> <span class="type"><a href="qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"save.json"</span>) : <span class="type"><a href="qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"save.dat"</span>)); <span class="keyword">if</span> (<span class="operator">!</span>loadFile<span class="operator">.</span>open(<span class="type"><a href="qiodevice.html">QIODevice</a></span><span class="operator">::</span>ReadOnly)) { <a href="qtglobal.html#qWarning">qWarning</a>(<span class="string">"Couldn't open save file."</span>); <span class="keyword">return</span> <span class="keyword">false</span>; } <span class="type"><a href="qbytearray.html">QByteArray</a></span> saveData <span class="operator">=</span> loadFile<span class="operator">.</span>readAll(); <span class="type"><a href="qjsondocument.html">QJsonDocument</a></span> loadDoc(saveFormat <span class="operator">=</span><span class="operator">=</span> Json <span class="operator">?</span> <span class="type"><a href="qjsondocument.html">QJsonDocument</a></span><span class="operator">::</span>fromJson(saveData) : <span class="type"><a href="qjsondocument.html">QJsonDocument</a></span><span class="operator">::</span>fromBinaryData(saveData)); read(loadDoc<span class="operator">.</span>object()); <span class="type"><a href="qtextstream.html">QTextStream</a></span>(stdout) <span class="operator"><</span><span class="operator"><</span> <span class="string">"Loaded save for "</span> <span class="operator"><</span><span class="operator"><</span> loadDoc<span class="operator">[</span><span class="string">"player"</span><span class="operator">]</span><span class="operator">[</span><span class="string">"name"</span><span class="operator">]</span><span class="operator">.</span>toString() <span class="operator"><</span><span class="operator"><</span> <span class="string">" using "</span> <span class="operator"><</span><span class="operator"><</span> (saveFormat <span class="operator">!</span><span class="operator">=</span> Json <span class="operator">?</span> <span class="string">"binary "</span> : <span class="string">""</span>) <span class="operator"><</span><span class="operator"><</span> <span class="string">"JSON...\n"</span>; <span class="keyword">return</span> <span class="keyword">true</span>; } bool Game<span class="operator">::</span>saveGame(Game<span class="operator">::</span>SaveFormat saveFormat) <span class="keyword">const</span> { <span class="type"><a href="qfile.html">QFile</a></span> saveFile(saveFormat <span class="operator">=</span><span class="operator">=</span> Json <span class="operator">?</span> <span class="type"><a href="qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"save.json"</span>) : <span class="type"><a href="qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"save.dat"</span>)); <span class="keyword">if</span> (<span class="operator">!</span>saveFile<span class="operator">.</span>open(<span class="type"><a href="qiodevice.html">QIODevice</a></span><span class="operator">::</span>WriteOnly)) { <a href="qtglobal.html#qWarning">qWarning</a>(<span class="string">"Couldn't open save file."</span>); <span class="keyword">return</span> <span class="keyword">false</span>; } <span class="type"><a href="qjsonobject.html">QJsonObject</a></span> gameObject; write(gameObject); <span class="type"><a href="qjsondocument.html">QJsonDocument</a></span> saveDoc(gameObject); saveFile<span class="operator">.</span>write(saveFormat <span class="operator">=</span><span class="operator">=</span> Json <span class="operator">?</span> saveDoc<span class="operator">.</span>toJson() : saveDoc<span class="operator">.</span>toBinaryData()); <span class="keyword">return</span> <span class="keyword">true</span>; } <span class="type">void</span> Game<span class="operator">::</span>read(<span class="keyword">const</span> <span class="type"><a href="qjsonobject.html">QJsonObject</a></span> <span class="operator">&</span>json) { <span class="keyword">if</span> (json<span class="operator">.</span>contains(<span class="string">"player"</span>) <span class="operator">&</span><span class="operator">&</span> json<span class="operator">[</span><span class="string">"player"</span><span class="operator">]</span><span class="operator">.</span>isObject()) mPlayer<span class="operator">.</span>read(json<span class="operator">[</span><span class="string">"player"</span><span class="operator">]</span><span class="operator">.</span>toObject()); <span class="keyword">if</span> (json<span class="operator">.</span>contains(<span class="string">"levels"</span>) <span class="operator">&</span><span class="operator">&</span> json<span class="operator">[</span><span class="string">"levels"</span><span class="operator">]</span><span class="operator">.</span>isArray()) { <span class="type"><a href="qjsonarray.html">QJsonArray</a></span> levelArray <span class="operator">=</span> json<span class="operator">[</span><span class="string">"levels"</span><span class="operator">]</span><span class="operator">.</span>toArray(); mLevels<span class="operator">.</span>clear(); mLevels<span class="operator">.</span>reserve(levelArray<span class="operator">.</span>size()); <span class="keyword">for</span> (<span class="type">int</span> levelIndex <span class="operator">=</span> <span class="number">0</span>; levelIndex <span class="operator"><</span> levelArray<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>levelIndex) { <span class="type"><a href="qjsonobject.html">QJsonObject</a></span> levelObject <span class="operator">=</span> levelArray<span class="operator">[</span>levelIndex<span class="operator">]</span><span class="operator">.</span>toObject(); Level level; level<span class="operator">.</span>read(levelObject); mLevels<span class="operator">.</span>append(level); } } } <span class="type">void</span> Game<span class="operator">::</span>write(<span class="type"><a href="qjsonobject.html">QJsonObject</a></span> <span class="operator">&</span>json) <span class="keyword">const</span> { <span class="type"><a href="qjsonobject.html">QJsonObject</a></span> playerObject; mPlayer<span class="operator">.</span>write(playerObject); json<span class="operator">[</span><span class="string">"player"</span><span class="operator">]</span> <span class="operator">=</span> playerObject; <span class="type"><a href="qjsonarray.html">QJsonArray</a></span> levelArray; foreach (<span class="keyword">const</span> Level level<span class="operator">,</span> mLevels) { <span class="type"><a href="qjsonobject.html">QJsonObject</a></span> levelObject; level<span class="operator">.</span>write(levelObject); levelArray<span class="operator">.</span>append(levelObject); } json<span class="operator">[</span><span class="string">"levels"</span><span class="operator">]</span> <span class="operator">=</span> levelArray; } <span class="type">void</span> Game<span class="operator">::</span>print(<span class="type">int</span> indentation) <span class="keyword">const</span> { <span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> indent(indentation <span class="operator">*</span> <span class="number">2</span><span class="operator">,</span> <span class="char">' '</span>); <span class="type"><a href="qtextstream.html">QTextStream</a></span>(stdout) <span class="operator"><</span><span class="operator"><</span> indent <span class="operator"><</span><span class="operator"><</span> <span class="string">"Player\n"</span>; mPlayer<span class="operator">.</span>print(indentation <span class="operator">+</span> <span class="number">1</span>); <span class="type"><a href="qtextstream.html">QTextStream</a></span>(stdout) <span class="operator"><</span><span class="operator"><</span> indent <span class="operator"><</span><span class="operator"><</span> <span class="string">"Levels\n"</span>; <span class="keyword">for</span> (Level level : mLevels) level<span class="operator">.</span>print(indentation <span class="operator">+</span> <span class="number">1</span>); } </pre> </div> <!-- @@@serialization/savegame/game.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>