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<h1 class="title">hangmangame.cpp Example File</h1>
<span class="subtitle">qthangman/hangmangame.cpp</span>
<!-- $$$qthangman/hangmangame.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">

  <span class="comment">/****************************************************************************
  **
  ** Copyright (C) 2017 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the Purchasing module 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:
  **
  ** &quot;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
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  ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.&quot;
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/</span>

  <span class="preprocessor">#include &quot;hangmangame.h&quot;</span>
  <span class="preprocessor">#include &lt;QFile&gt;</span>
  <span class="preprocessor">#include &lt;QDebug&gt;</span>
  <span class="preprocessor">#include &lt;time.h&gt;</span>
  <span class="preprocessor">#include &lt;QBuffer&gt;</span>
  <span class="preprocessor">#include &lt;QtConcurrent/QtConcurrentRun&gt;</span>

  HangmanGame<span class="operator">::</span>HangmanGame(<span class="type">QObject</span> <span class="operator">*</span>parent)
      : <span class="type">QObject</span>(parent)
      <span class="operator">,</span> m_lock(<span class="type">QMutex</span><span class="operator">::</span>Recursive)
      <span class="operator">,</span> m_vowelsUnlocked(<span class="keyword">false</span>)
  {
      qsrand(<span class="operator">::</span>time(<span class="number">0</span>));
      connect(<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>HangmanGame<span class="operator">::</span>vowelBought<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>HangmanGame<span class="operator">::</span>registerLetterBought);

      <span class="type">QtConcurrent</span><span class="operator">::</span>run(<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>HangmanGame<span class="operator">::</span>initWordList);

      m_vowelsUnlocked <span class="operator">=</span> m_persistentSettings<span class="operator">.</span>value(<span class="string">&quot;Hangman/vowelsUnlocked&quot;</span><span class="operator">,</span> <span class="keyword">false</span>)<span class="operator">.</span>toBool();
      m_vowelsAvailable <span class="operator">=</span> m_persistentSettings<span class="operator">.</span>value(<span class="string">&quot;Hangman/vowelsAvailable&quot;</span><span class="operator">,</span> <span class="number">0</span>)<span class="operator">.</span>toInt();
      m_wordsGiven <span class="operator">=</span> m_persistentSettings<span class="operator">.</span>value(<span class="string">&quot;Hangman/wordsGiven&quot;</span><span class="operator">,</span> <span class="number">0</span>)<span class="operator">.</span>toInt();
      m_wordsGuessedCorrectly <span class="operator">=</span> m_persistentSettings<span class="operator">.</span>value(<span class="string">&quot;Hangman/wordsGuessedCorrectly&quot;</span><span class="operator">,</span> <span class="number">0</span>)<span class="operator">.</span>toInt();
      m_score <span class="operator">=</span> m_persistentSettings<span class="operator">.</span>value(<span class="string">&quot;Hangman/score&quot;</span><span class="operator">,</span> <span class="number">0</span>)<span class="operator">.</span>toInt();
  }

  <span class="type">void</span> HangmanGame<span class="operator">::</span>reset()
  {
      m_lettersOwned<span class="operator">.</span>clear();
      <span class="keyword">emit</span> lettersOwnedChanged();
      <span class="keyword">emit</span> errorCountChanged();
      chooseRandomWord();
  }

  <span class="type">void</span> HangmanGame<span class="operator">::</span>reveal()
  {
      m_lettersOwned <span class="operator">+</span><span class="operator">=</span> vowels() <span class="operator">+</span> consonants();
      <span class="keyword">emit</span> errorCountChanged();
      <span class="keyword">emit</span> lettersOwnedChanged();
  }

  <span class="type">void</span> HangmanGame<span class="operator">::</span>gameOverReveal()
  {
      m_lettersOwned <span class="operator">+</span><span class="operator">=</span> vowels() <span class="operator">+</span> consonants();
      <span class="keyword">emit</span> lettersOwnedChanged();
  }

  <span class="type">void</span> HangmanGame<span class="operator">::</span>requestLetter(<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&amp;</span>letterString)
  {
      Q_ASSERT(letterString<span class="operator">.</span>size() <span class="operator">=</span><span class="operator">=</span> <span class="number">1</span>);
      <span class="type">QChar</span> letter <span class="operator">=</span> letterString<span class="operator">.</span>at(<span class="number">0</span>);
      registerLetterBought(letter);
  }

  <span class="type">void</span> HangmanGame<span class="operator">::</span>guessWord(<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&amp;</span>word)
  {
      <span class="keyword">if</span> (word<span class="operator">.</span>compare(m_word<span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>CaseInsensitive) <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>) {
          <span class="comment">//Determine how many vowels were earned</span>
          setVowelsAvailable(m_vowelsAvailable <span class="operator">+</span> calculateEarnedVowels());
          <span class="comment">//score is number of remaining consonants + remaining errors</span>
          setScore(m_score <span class="operator">+</span> calculateEarnedPoints());
          m_lettersOwned <span class="operator">+</span><span class="operator">=</span> m_word<span class="operator">.</span>toUpper();
      } <span class="keyword">else</span> {
          <span class="comment">// Small hack to get an additional penalty for guessing wrong</span>
          <span class="keyword">static</span> <span class="type">int</span> i<span class="operator">=</span><span class="number">0</span>;
          Q_ASSERT(i <span class="operator">&lt;</span> <span class="number">10</span>);
          m_lettersOwned <span class="operator">+</span><span class="operator">=</span> <span class="type">QString</span><span class="operator">::</span>number(i<span class="operator">+</span><span class="operator">+</span>);
          <span class="keyword">emit</span> errorCountChanged();
      }
      <span class="keyword">emit</span> lettersOwnedChanged();
  }

  bool HangmanGame<span class="operator">::</span>isVowel(<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&amp;</span>letter)
  {
      Q_ASSERT(letter<span class="operator">.</span>size() <span class="operator">=</span><span class="operator">=</span> <span class="number">1</span>);
      <span class="type">QChar</span> letterChar <span class="operator">=</span> letter<span class="operator">.</span>at(<span class="number">0</span>);
      <span class="keyword">return</span> vowels()<span class="operator">.</span>contains(letterChar);
  }

  <span class="type">QString</span> HangmanGame<span class="operator">::</span>vowels() <span class="keyword">const</span>
  {
      <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">&quot;AEIOU&quot;</span>);
  }

  <span class="type">QString</span> HangmanGame<span class="operator">::</span>consonants() <span class="keyword">const</span>
  {
      <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">&quot;BCDFGHJKLMNPQRSTVWXYZ&quot;</span>);
  }

  <span class="type">int</span> HangmanGame<span class="operator">::</span>errorCount() <span class="keyword">const</span>
  {
      <span class="type">int</span> count <span class="operator">=</span> <span class="number">0</span>;
      <span class="keyword">for</span> (<span class="type">QChar</span> c : m_lettersOwned) {
          <span class="keyword">if</span> (<span class="operator">!</span>m_word<span class="operator">.</span>contains(c))
              <span class="operator">+</span><span class="operator">+</span>count;
      }
      <span class="keyword">return</span> count;
  }

  bool HangmanGame<span class="operator">::</span>vowelsUnlocked() <span class="keyword">const</span>
  {
      <span class="keyword">return</span> m_vowelsUnlocked;
  }

  <span class="type">void</span> HangmanGame<span class="operator">::</span>setVowelsUnlocked(bool vowelsUnlocked)
  {
      <span class="keyword">if</span> (m_vowelsUnlocked <span class="operator">!</span><span class="operator">=</span> vowelsUnlocked) {
          m_vowelsUnlocked <span class="operator">=</span> vowelsUnlocked;
          m_persistentSettings<span class="operator">.</span>setValue(<span class="string">&quot;Hangman/vowelsUnlocked&quot;</span><span class="operator">,</span> m_vowelsUnlocked);
          <span class="keyword">emit</span> vowelsUnlockedChanged(m_vowelsUnlocked);
      }
  }

  <span class="type">int</span> HangmanGame<span class="operator">::</span>vowelsAvailable() <span class="keyword">const</span>
  {
      <span class="keyword">return</span> m_vowelsAvailable;
  }

  <span class="type">int</span> HangmanGame<span class="operator">::</span>wordsGiven() <span class="keyword">const</span>
  {
      <span class="keyword">return</span> m_wordsGiven;
  }

  <span class="type">int</span> HangmanGame<span class="operator">::</span>wordsGuessedCorrectly() <span class="keyword">const</span>
  {
      <span class="keyword">return</span> m_wordsGuessedCorrectly;
  }

  <span class="type">int</span> HangmanGame<span class="operator">::</span>score() <span class="keyword">const</span>
  {
      <span class="keyword">return</span> m_score;
  }

  <span class="type">void</span> HangmanGame<span class="operator">::</span>setScore(<span class="type">int</span> score)
  {
      <span class="keyword">if</span> (m_score <span class="operator">!</span><span class="operator">=</span> score) {
          m_score <span class="operator">=</span> score;
          m_persistentSettings<span class="operator">.</span>setValue(<span class="string">&quot;Hangman/score&quot;</span><span class="operator">,</span> m_score);
          <span class="keyword">emit</span> scoreChanged(score);
      }
  }

  <span class="type">void</span> HangmanGame<span class="operator">::</span>setWordsGiven(<span class="type">int</span> count)
  {
      <span class="keyword">if</span> (m_wordsGiven <span class="operator">!</span><span class="operator">=</span> count) {
          m_wordsGiven <span class="operator">=</span> count;
          m_persistentSettings<span class="operator">.</span>setValue(<span class="string">&quot;Hangman/wordsGiven&quot;</span><span class="operator">,</span> m_wordsGiven);
          <span class="keyword">emit</span> wordsGivenChanged(count);
      }
  }

  <span class="type">void</span> HangmanGame<span class="operator">::</span>setWordsGuessedCorrectly(<span class="type">int</span> count)
  {
      <span class="keyword">if</span> (m_wordsGuessedCorrectly <span class="operator">!</span><span class="operator">=</span> count) {
          m_wordsGuessedCorrectly <span class="operator">=</span> count;
          m_persistentSettings<span class="operator">.</span>setValue(<span class="string">&quot;Hangman/wordsGuessedCorrectly&quot;</span><span class="operator">,</span> m_wordsGuessedCorrectly);
          <span class="keyword">emit</span> wordsGuessedCorrectlyChanged(count);
      }
  }

  <span class="type">void</span> HangmanGame<span class="operator">::</span>setVowelsAvailable(<span class="type">int</span> count)
  {
      <span class="keyword">if</span> (m_vowelsAvailable <span class="operator">!</span><span class="operator">=</span> count) {
          m_vowelsAvailable <span class="operator">=</span> count;
          m_persistentSettings<span class="operator">.</span>setValue(<span class="string">&quot;Hangman/vowelsAvailable&quot;</span><span class="operator">,</span> m_vowelsAvailable);
          <span class="keyword">emit</span> vowelsAvailableChanged(count);
      }
  }

  <span class="type">void</span> HangmanGame<span class="operator">::</span>registerLetterBought(<span class="keyword">const</span> <span class="type">QChar</span> <span class="operator">&amp;</span>letter)
  {
      <span class="keyword">if</span> (m_lettersOwned<span class="operator">.</span>contains(letter))
          <span class="keyword">return</span>;

      m_lettersOwned<span class="operator">.</span>append(letter);
      <span class="keyword">emit</span> lettersOwnedChanged();

      <span class="keyword">if</span> (<span class="operator">!</span>m_word<span class="operator">.</span>contains(letter))
          <span class="keyword">emit</span> errorCountChanged();
  }

  <span class="type">void</span> HangmanGame<span class="operator">::</span>chooseRandomWord()
  {
      <span class="type">QMutexLocker</span> locker(<span class="operator">&amp;</span>m_lock);
      <span class="keyword">if</span> (m_wordList<span class="operator">.</span>isEmpty())
          <span class="keyword">return</span>;

      m_word <span class="operator">=</span> m_wordList<span class="operator">.</span>at(qrand() <span class="operator">%</span> m_wordList<span class="operator">.</span>size());
      <span class="keyword">emit</span> wordChanged();
  }

  <span class="type">void</span> HangmanGame<span class="operator">::</span>initWordList()
  {
      <span class="type">QMutexLocker</span> locker(<span class="operator">&amp;</span>m_lock);
      qsrand(<span class="operator">::</span>time(<span class="number">0</span>) <span class="operator">+</span> <span class="number">1000</span>);
      <span class="type">QFile</span> file(<span class="string">&quot;:/enable2.txt&quot;</span>);
      <span class="keyword">if</span> (file<span class="operator">.</span>open(<span class="type">QIODevice</span><span class="operator">::</span>ReadOnly)) {
          <span class="type">QByteArray</span> allData <span class="operator">=</span> file<span class="operator">.</span>readAll();
          <span class="type">QBuffer</span> buffer(<span class="operator">&amp;</span>allData);
          <span class="keyword">if</span> (<span class="operator">!</span>buffer<span class="operator">.</span>open(<span class="type">QIODevice</span><span class="operator">::</span>ReadOnly))
              qFatal(<span class="string">&quot;Couldn't open buffer for reading!&quot;</span>);

          <span class="keyword">while</span> (<span class="operator">!</span>buffer<span class="operator">.</span>atEnd()) {
              <span class="type">QByteArray</span> ba <span class="operator">=</span> buffer<span class="operator">.</span>readLine()<span class="operator">.</span>trimmed()<span class="operator">.</span>toUpper();
              <span class="keyword">if</span> (<span class="operator">!</span>ba<span class="operator">.</span>isEmpty() <span class="operator">&amp;</span><span class="operator">&amp;</span> ba<span class="operator">.</span>length() <span class="operator">&lt;</span> <span class="number">10</span>)
                  m_wordList<span class="operator">.</span>append(<span class="type">QString</span><span class="operator">::</span>fromLatin1(ba));
          }
      }

      chooseRandomWord();
  }

  <span class="type">int</span> HangmanGame<span class="operator">::</span>calculateEarnedVowels()
  {
      <span class="type">int</span> total <span class="operator">=</span> <span class="number">0</span>;
      <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator">&lt;</span> m_word<span class="operator">.</span>length(); <span class="operator">+</span><span class="operator">+</span>i) {
          <span class="keyword">if</span> (isVowel(<span class="type">QString</span>(m_word<span class="operator">[</span>i<span class="operator">]</span>)) <span class="operator">&amp;</span><span class="operator">&amp;</span> <span class="operator">!</span>m_lettersOwned<span class="operator">.</span>contains(<span class="type">QString</span>(m_word<span class="operator">[</span>i<span class="operator">]</span>)))
              total<span class="operator">+</span><span class="operator">+</span>;
      }
      <span class="keyword">return</span> total;
  }

  <span class="type">int</span> HangmanGame<span class="operator">::</span>calculateEarnedPoints()
  {
      <span class="type">int</span> total <span class="operator">=</span> <span class="number">0</span>;
      <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator">&lt;</span> m_word<span class="operator">.</span>length(); <span class="operator">+</span><span class="operator">+</span>i) {
          <span class="keyword">if</span> (consonants()<span class="operator">.</span>contains(<span class="type">QString</span>(m_word<span class="operator">[</span>i<span class="operator">]</span>)) <span class="operator">&amp;</span><span class="operator">&amp;</span> <span class="operator">!</span>m_lettersOwned<span class="operator">.</span>contains(<span class="type">QString</span>(m_word<span class="operator">[</span>i<span class="operator">]</span>)))
              total<span class="operator">+</span><span class="operator">+</span>;
      }
      total <span class="operator">+</span><span class="operator">=</span> <span class="number">8</span> <span class="operator">-</span> errorCount();
      <span class="keyword">return</span> total;
  }

</pre>
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<!-- @@@qthangman/hangmangame.cpp -->
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