hangmangame.cpp Example File | Qt Purchasing 5.9

Qt 5.9 | Qt Purchasing | Qt Purchasing Examples - QtHangman | hangmangame.cpp Example File

Qt 5.9.9 Reference Documentation

# hangmangame.cpp Example File

qthangman/hangmangame.cpp

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      #include "hangmangame.h"
      #include <QFile>
      #include <QDebug>
      #include <time.h>
      #include <QBuffer>
      #include <QtConcurrent/QtConcurrentRun>

      HangmanGame::HangmanGame(QObject *parent)
          : QObject(parent)
          , m_lock(QMutex::Recursive)
          , m_vowelsUnlocked(false)
      {
          qsrand(::time(0));
          connect(this, &HangmanGame::vowelBought, this, &HangmanGame::registerLetterBought);

          QtConcurrent::run(this, &HangmanGame::initWordList);

          m_vowelsUnlocked = m_persistentSettings.value("Hangman/vowelsUnlocked", false).toBool();
          m_vowelsAvailable = m_persistentSettings.value("Hangman/vowelsAvailable", 0).toInt();
          m_wordsGiven = m_persistentSettings.value("Hangman/wordsGiven", 0).toInt();
          m_wordsGuessedCorrectly = m_persistentSettings.value("Hangman/wordsGuessedCorrectly", 0).toInt();
          m_score = m_persistentSettings.value("Hangman/score", 0).toInt();
      }

      void HangmanGame::reset()
      {
          m_lettersOwned.clear();
          emit lettersOwnedChanged();
          emit errorCountChanged();
          chooseRandomWord();
      }

      void HangmanGame::reveal()
      {
          m_lettersOwned += vowels() + consonants();
          emit errorCountChanged();
          emit lettersOwnedChanged();
      }

      void HangmanGame::gameOverReveal()
      {
          m_lettersOwned += vowels() + consonants();
          emit lettersOwnedChanged();
      }

      void HangmanGame::requestLetter(const QString &letterString)
      {
          Q_ASSERT(letterString.size() == 1);
          QChar letter = letterString.at(0);
          registerLetterBought(letter);
      }

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

      bool HangmanGame::isVowel(const QString &letter)
      {
          Q_ASSERT(letter.size() == 1);
          QChar letterChar = letter.at(0);
          return vowels().contains(letterChar);
      }

      QString HangmanGame::vowels() const
      {
          return QStringLiteral("AEIOU");
      }

      QString HangmanGame::consonants() const
      {
          return QStringLiteral("BCDFGHJKLMNPQRSTVWXYZ");
      }

      int HangmanGame::errorCount() const
      {
          int count = 0;
          for (QChar c : m_lettersOwned) {
              if (!m_word.contains(c))
                  ++count;
          }
          return count;
      }

      bool HangmanGame::vowelsUnlocked() const
      {
          return m_vowelsUnlocked;
      }

      void HangmanGame::setVowelsUnlocked(bool vowelsUnlocked)
      {
          if (m_vowelsUnlocked != vowelsUnlocked) {
              m_vowelsUnlocked = vowelsUnlocked;
              m_persistentSettings.setValue("Hangman/vowelsUnlocked", m_vowelsUnlocked);
              emit vowelsUnlockedChanged(m_vowelsUnlocked);
          }
      }

      int HangmanGame::vowelsAvailable() const
      {
          return m_vowelsAvailable;
      }

      int HangmanGame::wordsGiven() const
      {
          return m_wordsGiven;
      }

      int HangmanGame::wordsGuessedCorrectly() const
      {
          return m_wordsGuessedCorrectly;
      }

      int HangmanGame::score() const
      {
          return m_score;
      }

      void HangmanGame::setScore(int score)
      {
          if (m_score != score) {
              m_score = score;
              m_persistentSettings.setValue("Hangman/score", m_score);
              emit scoreChanged(score);
          }
      }

      void HangmanGame::setWordsGiven(int count)
      {
          if (m_wordsGiven != count) {
              m_wordsGiven = count;
              m_persistentSettings.setValue("Hangman/wordsGiven", m_wordsGiven);
              emit wordsGivenChanged(count);
          }
      }

      void HangmanGame::setWordsGuessedCorrectly(int count)
      {
          if (m_wordsGuessedCorrectly != count) {
              m_wordsGuessedCorrectly = count;
              m_persistentSettings.setValue("Hangman/wordsGuessedCorrectly", m_wordsGuessedCorrectly);
              emit wordsGuessedCorrectlyChanged(count);
          }
      }

      void HangmanGame::setVowelsAvailable(int count)
      {
          if (m_vowelsAvailable != count) {
              m_vowelsAvailable = count;
              m_persistentSettings.setValue("Hangman/vowelsAvailable", m_vowelsAvailable);
              emit vowelsAvailableChanged(count);
          }
      }

      void HangmanGame::registerLetterBought(const QChar &letter)
      {
          if (m_lettersOwned.contains(letter))
              return;

          m_lettersOwned.append(letter);
          emit lettersOwnedChanged();

          if (!m_word.contains(letter))
              emit errorCountChanged();
      }

      void HangmanGame::chooseRandomWord()
      {
          QMutexLocker locker(&m_lock);
          if (m_wordList.isEmpty())
              return;

          m_word = m_wordList.at(qrand() % m_wordList.size());
          emit wordChanged();
      }

      void HangmanGame::initWordList()
      {
          QMutexLocker locker(&m_lock);
          qsrand(::time(0) + 1000);
          QFile file(":/enable2.txt");
          if (file.open(QIODevice::ReadOnly)) {
              QByteArray allData = file.readAll();
              QBuffer buffer(&allData);
              if (!buffer.open(QIODevice::ReadOnly))
                  qFatal("Couldn't open buffer for reading!");

              while (!buffer.atEnd()) {
                  QByteArray ba = buffer.readLine().trimmed().toUpper();
                  if (!ba.isEmpty() && ba.length() < 10)
                      m_wordList.append(QString::fromLatin1(ba));
              }
          }

          chooseRandomWord();
      }

      int HangmanGame::calculateEarnedVowels()
      {
          int total = 0;
          for (int i = 0; i < m_word.length(); ++i) {
              if (isVowel(QString(m_word[i])) && !m_lettersOwned.contains(QString(m_word[i])))
                  total++;
          }
          return total;
      }

      int HangmanGame::calculateEarnedPoints()
      {
          int total = 0;
          for (int i = 0; i < m_word.length(); ++i) {
              if (consonants().contains(QString(m_word[i])) && !m_lettersOwned.contains(QString(m_word[i])))
                  total++;
          }
          total += 8 - errorCount();
          return total;
      }