File indexing completed on 2023-10-01 08:02:05

 /*
     SPDX-FileCopyrightText: 2007-2008 Thomas Gallinari <tg8187@yahoo.fr>
     SPDX-FileCopyrightText: 2007-2008 Pierre-Benoit Besse <besse@gmail.com>
     SPDX-FileCopyrightText: 2007-2008 Alexandre Galinier <alex.galinier@hotmail.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "game.h"
 #include "kapmanparser.h"
 #include "settings.h"
 
 #include <KgDifficulty>
 #include <QStandardPaths>
 #include <QFile>
 
 const int Game::FPS = 40;
 int Game::s_bonusDuration;
 int Game::s_preyStateDuration;
 qreal Game::s_durationRatio;
 
 Game::Game()
     : m_isCheater(false)
     , m_lives(3)
     , m_points(0)
     , m_level(1)
     , m_nbEatenGhosts(0)
     , m_soundGameOver(QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("sounds/kapman/gameover.ogg")))
     , m_soundGhost(QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("sounds/kapman/ghost.ogg")))
     , m_soundGainLife(QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("sounds/kapman/life.ogg")))
     , m_soundEnergizer(QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("sounds/kapman/energizer.ogg")))
     , m_soundBonus(QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("sounds/kapman/bonus.ogg")))
     , m_soundPill(QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("sounds/kapman/pill.ogg")))
     , m_soundLevelUp(QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("sounds/kapman/levelup.ogg")))
 {
     // Initialize the sound state
     setSoundsEnabled(Settings::sounds());
 
     // Timers for medium difficulty
     s_bonusDuration = 7000;
     s_preyStateDuration = 10000;
     // Difference ratio between low/high and medium speed
     s_durationRatio = 1.0;
 
     // Tells the KgDifficulty singleton that the game is not running
     Kg::difficulty()->setGameRunning(false);
 
     // Create the Maze instance
     m_maze = new Maze();
     connect(m_maze, &Maze::allElementsEaten, this, &Game::nextLevel);
     // Create the parser that will parse the XML file in order to initialize the Maze instance
     // This also creates all the characters
     KapmanParser kapmanParser(this);
     // Set the XML file as input source for the parser
     QFile mazeXmlFile(QStandardPaths::locate(QStandardPaths::AppDataLocation, QStringLiteral("defaultmaze.xml")));
     mazeXmlFile.open(QIODevice::ReadOnly);
     kapmanParser.parse(&mazeXmlFile);
 
     connect(m_kapman, &Kapman::sWinPoints, this, &Game::winPoints);
 
     // Initialize the characters speed timers duration considering the difficulty level
     switch (Kg::difficultyLevel()) {
     case KgDifficultyLevel::Easy:
         // Ratio low/medium speed
         s_durationRatio = Character::MEDIUM_SPEED / Character::LOW_SPEED;
         break;
     case KgDifficultyLevel::Medium:
         s_durationRatio = 1;
         break;
     case KgDifficultyLevel::Hard:
         // Ratio high/medium speed
         s_durationRatio = Character::MEDIUM_SPEED / Character::HIGH_SPEED;
         break;
     default:
         break;
     }
 
     for (int i = 0; i < m_ghosts.size(); ++i) {
         connect(m_ghosts[i], &Ghost::lifeLost, this, &Game::kapmanDeath);
         connect(m_ghosts[i], &Ghost::ghostEaten, this, &Game::ghostDeath);
         // Initialize the ghosts speed and the ghost speed increase considering the characters speed
         m_ghosts[i]->initSpeedInc();
     }
     m_kapman->initSpeedInc();
 
     // Initialize Bonus timer from the difficulty level
     m_bonusTimer = new QTimer(this);
     m_bonusTimer->setInterval((int)(s_bonusDuration * s_durationRatio));
     m_bonusTimer->setSingleShot(true);
     connect(m_bonusTimer, &QTimer::timeout, this, &Game::hideBonus);
     // Initialize the Preys timer from the difficulty level
     m_preyTimer = new QTimer(this);
     m_preyTimer->setInterval((int)(s_preyStateDuration * s_durationRatio));
     m_preyTimer->setSingleShot(true);
     connect(m_preyTimer, &QTimer::timeout, this, &Game::endPreyState);
 
     // Start the Game timer
     m_timer = new QTimer(this);
     m_timer->setInterval(int(1000 / Game::FPS));
     connect(m_timer, &QTimer::timeout, this, &Game::update);
     m_timer->start();
     m_state = RUNNING;
     // Init the characters coordinates on the Maze
     initCharactersPosition();
 }
 
 Game::~Game()
 {
     delete m_timer;
     delete m_bonusTimer;
     delete m_maze;
     delete m_kapman;
     for (int i = 0; i < m_ghosts.size(); ++i) {
         delete m_ghosts[i];
     }
     delete m_bonus;
 }
 
 void Game::start()
 {
     // Restart the Game timer
     m_timer->start();
     m_bonusTimer->start();
     m_preyTimer->start();
     m_state = RUNNING;
     Q_EMIT pauseChanged(false, false);
 }
 
 void Game::pause(bool p_locked)
 {
     // Stop the Game timer
     m_timer->stop();
 
     if (m_bonusTimer->isActive()) {
         const auto remainingTime{m_bonusTimer->remainingTime()};
         m_bonusTimer->stop();
         m_bonusTimer->setInterval(remainingTime);
     }
 
     if (m_preyTimer->isActive()) {
         const auto remainingTime{m_preyTimer->remainingTime()};
         m_preyTimer->stop();
         m_preyTimer->setInterval(remainingTime);
     }
 
     if (p_locked) {
         m_state = PAUSED_LOCKED;
     } else {
         m_state = PAUSED_UNLOCKED;
     }
     Q_EMIT pauseChanged(true, false);
 }
 
 void Game::switchPause(bool p_locked)
 {
     // If the Game is not already paused
     if (m_state == RUNNING) {
         // Pause the Game
         pause(p_locked);
         Q_EMIT pauseChanged(true, true);
     }
     // If the Game is already paused
     else {
         // Resume the Game
         start();
         Q_EMIT pauseChanged(false, true);
     }
 }
 
 Kapman *Game::getKapman() const
 {
     return m_kapman;
 }
 
 QList<Ghost *> Game::getGhosts() const
 {
     return m_ghosts;
 }
 
 QTimer *Game::getTimer() const
 {
     return m_timer;
 }
 
 Maze *Game::getMaze() const
 {
     return m_maze;
 }
 
 bool Game::isPaused() const
 {
     return (m_state != RUNNING);
 }
 
 bool Game::isCheater() const
 {
     return m_isCheater;
 }
 
 int Game::getScore() const
 {
     return m_points;
 }
 int Game::getLives() const
 {
     return m_lives;
 }
 
 int Game::getLevel() const
 {
     return m_level;
 }
 
 void Game::setLevel(int p_level)
 {
     m_isCheater = true;
     m_level = p_level;
     m_maze->resetNbElem();
     m_timer->start(); // Needed to reinit character positions
     initCharactersPosition();
     for (int i = 0; i < m_ghosts.size(); ++i) {
         m_ghosts[i]->initSpeed();
     }
     m_kapman->initSpeed();
     for (int i = 0; i < m_level; ++i) {
         for (int j = 0; j < m_ghosts.size(); ++j) {
             m_ghosts[j]->increaseCharactersSpeed();
         }
         m_kapman->increaseCharactersSpeed();
     }
     setTimersDuration();
     m_bonus->setPoints(m_level * 100);
     Q_EMIT scoreChanged(m_points);
     Q_EMIT livesChanged(m_lives);
     Q_EMIT levelChanged(m_level);
     Q_EMIT pauseChanged(false, true);
     Q_EMIT levelStarted(true);
 }
 
 Bonus *Game::getBonus() const
 {
     return m_bonus;
 }
 
 void Game::createBonus(QPointF p_position)
 {
     m_bonus = new Bonus(qreal(Cell::SIZE * p_position.x()), qreal(Cell::SIZE * p_position.y()), m_maze, 100);
 }
 
 void Game::createKapman(QPointF p_position)
 {
     m_kapman = new Kapman(qreal(Cell::SIZE * p_position.x()), qreal(Cell::SIZE * p_position.y()), m_maze);
 }
 
 void Game::createGhost(QPointF p_position, const QString &p_imageId)
 {
     m_ghosts.append(new Ghost(qreal(Cell::SIZE * p_position.x()), qreal(Cell::SIZE * p_position.y()), p_imageId, m_maze));
 }
 
 void Game::initMaze(const int p_nbRows, const int p_nbColumns)
 {
     m_maze->init(p_nbRows, p_nbColumns);
 }
 
 void Game::setSoundsEnabled(bool p_enabled)
 {
     m_soundEnabled = p_enabled;
     Settings::setSounds(p_enabled);
     Settings::self()->save();
 }
 
 void Game::initCharactersPosition()
 {
     // If the timer is stopped, it means that collisions are already being handled
     if (m_timer->isActive()) {
         // At the beginning, the timer is stopped but the Game isn't paused (to allow keyPressedEvent detection)
         m_timer->stop();
         m_state = RUNNING;
         // Initialize Ghost coordinates and state
         m_ghosts[0]->initCoordinate();
         m_ghosts[1]->initCoordinate();
         m_ghosts[2]->initCoordinate();
         m_ghosts[3]->initCoordinate();
         m_kapman->initCoordinate();
         m_ghosts[0]->setState(Ghost::HUNTER);
         m_ghosts[1]->setState(Ghost::HUNTER);
         m_ghosts[2]->setState(Ghost::HUNTER);
         m_ghosts[3]->setState(Ghost::HUNTER);
         m_kapman->init();
         // Initialize the Pills & Energizers coordinates
         for (int i = 0; i < m_maze->getNbRows(); ++i) {
             for (int j = 0; j < m_maze->getNbColumns(); ++j) {
                 if (m_maze->getCell(i, j).getElement() != nullptr) {
                     m_maze->getCell(i, j).getElement()->setX(Cell::SIZE * (j + 0.5));
                     m_maze->getCell(i, j).getElement()->setY(Cell::SIZE * (i + 0.5));
                 }
             }
         }
     }
 }
 
 void Game::setTimersDuration()
 {
     // Updates the timers duration ratio with the ghosts speed
     s_durationRatio = Character::MEDIUM_SPEED / m_ghosts[0]->getNormalSpeed();
 
     setPreyTimerDuration();
     setBonusTimerDuration();
 }
 
 void Game::setBonusTimerDuration()
 {
     m_bonusTimer->setInterval((int)(s_bonusDuration * s_durationRatio));
 }
 
 void Game::setPreyTimerDuration()
 {
     m_preyTimer->setInterval((int)(s_preyStateDuration * s_durationRatio));
 }
 
 void Game::keyPressEvent(QKeyEvent *p_event)
 {
     // At the beginning or when paused, we start the timer when an arrow key is pressed
     if ((p_event->key() == Qt::Key_Up || p_event->key() == Qt::Key_Down || p_event->key() == Qt::Key_Left || p_event->key() == Qt::Key_Right)
         && !m_timer->isActive()) {
         // If paused
         if (m_state == PAUSED_UNLOCKED) {
             switchPause();
         } else if (m_state == RUNNING) { // At the game beginning
             // Start the game
             m_timer->start();
             Q_EMIT gameStarted();
         }
         // Tells the KgDifficulty singleton that the game now runs
         Kg::difficulty()->setGameRunning(true);
     }
     // Behaviour when the game has begun
     switch (p_event->key()) {
     case Qt::Key_Up:
         if (m_state == RUNNING) {
             m_kapman->goUp();
         }
         break;
     case Qt::Key_Down:
         if (m_state == RUNNING) {
             m_kapman->goDown();
         }
         break;
     case Qt::Key_Right:
         if (m_state == RUNNING) {
             m_kapman->goRight();
         }
         break;
     case Qt::Key_Left:
         if (m_state == RUNNING) {
             m_kapman->goLeft();
         }
         break;
     case Qt::Key_P:
     case Qt::Key_Escape:
         switchPause();
         break;
     case Qt::Key_K:
         // Cheat code to get one more life
         if (p_event->modifiers() == (Qt::AltModifier | Qt::ControlModifier | Qt::ShiftModifier)) {
             m_lives++;
             m_isCheater = true;
             Q_EMIT livesChanged(m_lives);
         }
         break;
     case Qt::Key_L:
         // Cheat code to go to the next level
         if (p_event->modifiers() == (Qt::AltModifier | Qt::ControlModifier | Qt::ShiftModifier)) {
             m_isCheater = true;
             nextLevel();
         }
         break;
     default:
         break;
     }
 }
 
 void Game::update()
 {
     int curKapmanRow, curKapmanCol;
 
     // Check if the kapman is in the line of sight of a ghost
     curKapmanRow = m_maze->getRowFromY(m_kapman->getY());
     curKapmanCol = m_maze->getColFromX(m_kapman->getX());
 
     for (int i = 0; i < m_ghosts.size(); ++i) {
         if (m_ghosts[i]->getState() == Ghost::HUNTER && m_ghosts[i]->isInLineSight(m_kapman)) {
             m_ghosts[i]->updateMove(curKapmanRow, curKapmanCol);
         } else {
             m_ghosts[i]->updateMove();
         }
 
         const int startBlinkingDelay = s_preyStateDuration * s_durationRatio - 5 * (500 * s_durationRatio);
         if (m_preyTimer->remainingTime() < (m_preyTimer->interval() - startBlinkingDelay)) {
             m_ghosts[i]->setPreyStateAlmostOverEnabled(true);
         } else {
             m_ghosts[i]->setPreyStateAlmostOverEnabled(false);
         }
     }
     m_kapman->updateMove();
     m_kapman->emitGameUpdated();
 }
 
 void Game::kapmanDeath()
 {
     if (m_soundEnabled) {
         m_soundGameOver.start();
     }
 
     m_lives--;
     m_kapman->die();
     // Make a 2 seconds pause while the kapman is blinking
     pause(true);
     QTimer::singleShot(2500, this, &Game::resumeAfterKapmanDeath);
 }
 
 void Game::resumeAfterKapmanDeath()
 {
     Q_EMIT livesChanged(m_lives);
     // Start the timer
     start();
     // Remove a possible bonus
     Q_EMIT bonusOff();
     // If their is no lives left, we start a new game
     if (m_lives <= 0) {
         Q_EMIT gameOver();
     } else {
         Q_EMIT levelStarted(false);
         // Move all characters to their initial positions
         initCharactersPosition();
     }
 }
 
 void Game::ghostDeath(Ghost *p_ghost)
 {
     m_nbEatenGhosts++;
     p_ghost->setState(Ghost::EATEN);
     winPoints(p_ghost);
 }
 
 void Game::winPoints(Element *p_element)
 {
     // The value of won Points
     long wonPoints;
 
     // If the eaten element is a ghost, win 200 * number of eaten ghosts since the energizer was eaten
     if (p_element->getType() == Element::GHOST) {
         if (m_soundEnabled) {
             m_soundGhost.start();
         }
 
         // Get the position of the ghost
         qreal xPos = p_element->getX();
         qreal yPos = p_element->getY();
         // Add points to the score
         wonPoints = p_element->getPoints() * m_nbEatenGhosts;
         // Send to the scene the number of points to display and its position
         Q_EMIT pointsToDisplay(wonPoints, xPos, yPos);
     }
     // Else you just win the value of the element
     else {
         wonPoints = p_element->getPoints();
     }
 
     // Update of the points value
     m_points += wonPoints;
 
     // For each 10000 points we get a life more
     if (m_points / 10000 > (m_points - wonPoints) / 10000) {
         if (m_soundEnabled) {
             m_soundGainLife.start();
         }
 
         m_lives++;
         Q_EMIT livesChanged(m_lives);
     }
     // If the eaten element is an energyzer we change the ghosts state
     if (p_element->getType() == Element::ENERGYZER) {
         // We start the prey timer
         m_preyTimer->start();
 
         if (m_soundEnabled) {
             m_soundEnergizer.start();
         }
 
         for (int i = 0; i < m_ghosts.size(); ++i) {
             if (m_ghosts[i]->getState() != Ghost::EATEN) {
                 m_ghosts[i]->setState(Ghost::PREY);
             }
         }
         // Reset the number of eaten ghosts
         m_nbEatenGhosts = 0;
         Q_EMIT elementEaten(p_element->getX(), p_element->getY());
     } else if (p_element->getType() == Element::PILL) {
         if (m_soundEnabled) {
             m_soundPill.start();
         }
 
         Q_EMIT elementEaten(p_element->getX(), p_element->getY());
     } else if (p_element->getType() == Element::BONUS) {
         if (m_soundEnabled) {
             m_soundBonus.start();
         }
 
         // Get the position of the Bonus
         qreal xPos = p_element->getX();
         qreal yPos = p_element->getY();
 
         // Sends to the scene the number of points to display and its position
         Q_EMIT pointsToDisplay(wonPoints, xPos, yPos);
 
         Q_EMIT bonusOff();
     }
     // If 1/3 or 2/3 of the pills are eaten
     if (m_maze->getNbElem() == m_maze->getTotalNbElem() / 3 || m_maze->getNbElem() == (m_maze->getTotalNbElem() * 2 / 3)) {
         // Display the Bonus
         Q_EMIT bonusOn();
         m_bonusTimer->start();
     }
     Q_EMIT scoreChanged(m_points);
 }
 
 void Game::nextLevel()
 {
     if (m_soundEnabled) {
         m_soundLevelUp.start();
     }
 
     // Increment the level
     m_level++;
     // Initialize the maze items
     m_maze->resetNbElem();
     // Update Bonus
     m_bonus->setPoints(m_level * 100);
     // Move all characters to their initial positions
     initCharactersPosition();
     // Increase the ghosts speed
     for (int i = 0; i < m_ghosts.size(); ++i) {
         // Increase the ghosts speed increase
         m_ghosts[i]->increaseCharactersSpeed();
     }
     m_kapman->increaseCharactersSpeed();
     // Update the timers duration with the new speed
     setTimersDuration();
     // Update the score, level and lives labels
     Q_EMIT scoreChanged(m_points);
     Q_EMIT livesChanged(m_lives);
     Q_EMIT levelChanged(m_level);
     // Update the view
     Q_EMIT levelStarted(true);
 }
 
 void Game::hideBonus()
 {
     Q_EMIT bonusOff();
 
     setBonusTimerDuration();
 }
 
 void Game::endPreyState()
 {
     for (int i = 0; i < m_ghosts.size(); ++i) {
         if (m_ghosts[i]->getState() != Ghost::EATEN) {
             m_ghosts[i]->setState(Ghost::HUNTER);
         }
     }
 
     setPreyTimerDuration();
 }
 
 #include "moc_game.cpp"