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    41 

    42 //Own

    43 #include "states.h"

    44 #include "graphicsscene.h"

    45 #include "boat.h"

    46 #include "submarine.h"

    47 #include "torpedo.h"

    48 #include "animationmanager.h"

    49 #include "progressitem.h"

    50 #include "textinformationitem.h"

    51 

    52 //Qt

    53 #include <QtGui/QMessageBox>

    54 #include <QtGui/QGraphicsView>

    55 #include <QtCore/QStateMachine>

    56 #include <QtGui/QKeyEventTransition>

    57 #include <QtCore/QFinalState>

    58 

    59 PlayState::PlayState(GraphicsScene *scene, QState *parent)

    60     : QState(parent),

    61     scene(scene),

    62     machine(0),

    63     currentLevel(0),

    64     score(0)

    65 {

    66 }

    67 

    68 PlayState::~PlayState()

    69 {

    70     delete machine;

    71 }

    72 

    73 void PlayState::onEntry(QEvent *)

    74 {

    75     //We are now playing?

    76     if (machine) {

    77         machine->stop();

    78         //we hide the information

    79         scene->textInformationItem->hide();

    80         scene->clearScene();

    81         currentLevel = 0;

    82         score = 0;

    83         delete machine;

    84     }

    85 

    86     machine = new QStateMachine;

    87 

    88     //This state is when player is playing

    89     LevelState *levelState = new LevelState(scene, this, machine);

    90 

    91     //This state is when the player is actually playing but the game is not paused

    92     QState *playingState = new QState(levelState);

    93     levelState->setInitialState(playingState);

    94 

    95     //This state is when the game is paused

    96     PauseState *pauseState = new PauseState(scene, levelState);

    97 

    98     //We have one view, it receive the key press event

    99     QKeyEventTransition *pressPplay = new QKeyEventTransition(scene->views().at(0), QEvent::KeyPress, Qt::Key_P);

   100     pressPplay->setTargetState(pauseState);

   101     QKeyEventTransition *pressPpause = new QKeyEventTransition(scene->views().at(0), QEvent::KeyPress, Qt::Key_P);

   102     pressPpause->setTargetState(playingState);

   103 

   104     //Pause "P" is triggered, the player pause the game

   105     playingState->addTransition(pressPplay);

   106 

   107     //To get back playing when the game has been paused

   108     pauseState->addTransition(pressPpause);

   109 

   110     //This state is when player have lost

   111     LostState *lostState = new LostState(scene, this, machine);

   112 

   113     //This state is when player have won

   114     WinState *winState = new WinState(scene, this, machine);

   115 

   116     //The boat has been destroyed then the game is finished

   117     levelState->addTransition(scene->boat, SIGNAL(boatExecutionFinished()),lostState);

   118 

   119     //This transition check if we won or not

   120     WinTransition *winTransition = new WinTransition(scene, this, winState);

   121 

   122     //The boat has been destroyed then the game is finished

   123     levelState->addTransition(winTransition);

   124 

   125     //This state is an animation when the score changed

   126     UpdateScoreState *scoreState = new UpdateScoreState(this, levelState);

   127 

   128     //This transition update the score when a submarine die

   129     UpdateScoreTransition *scoreTransition = new UpdateScoreTransition(scene, this, levelState);

   130     scoreTransition->setTargetState(scoreState);

   131 

   132     //The boat has been destroyed then the game is finished

   133     playingState->addTransition(scoreTransition);

   134 

   135     //We go back to play state

   136     scoreState->addTransition(playingState);

   137 

   138     //We start playing!!!

   139     machine->setInitialState(levelState);

   140 

   141     //Final state

   142     QFinalState *final = new QFinalState(machine);

   143 

   144     //This transition is triggered when the player press space after completing a level

   145     CustomSpaceTransition *spaceTransition = new CustomSpaceTransition(scene->views().at(0), this, QEvent::KeyPress, Qt::Key_Space);

   146     spaceTransition->setTargetState(levelState);

   147     winState->addTransition(spaceTransition);

   148 

   149     //We lost we should reach the final state

   150     lostState->addTransition(lostState, SIGNAL(finished()), final);

   151 

   152     machine->start();

   153 }

   154 

   155 LevelState::LevelState(GraphicsScene *scene, PlayState *game, QState *parent) : QState(parent), scene(scene), game(game)

   156 {

   157 }

   158 void LevelState::onEntry(QEvent *)

   159 {

   160     initializeLevel();

   161 }

   162 

   163 void LevelState::initializeLevel()

   164 {

   165     //we re-init the boat

   166     scene->boat->setPos(scene->width()/2, scene->sealLevel() - scene->boat->size().height());

   167     scene->boat->setCurrentSpeed(0);

   168     scene->boat->setCurrentDirection(Boat::None);

   169     scene->boat->setBombsLaunched(0);

   170     scene->boat->show();

   171     scene->setFocusItem(scene->boat, Qt::OtherFocusReason);

   172     scene->boat->run();

   173 

   174     scene->progressItem->setScore(game->score);

   175     scene->progressItem->setLevel(game->currentLevel + 1);

   176 

   177     GraphicsScene::LevelDescription currentLevelDescription = scene->levelsData.value(game->currentLevel);

   178 

   179     for (int i = 0; i < currentLevelDescription.submarines.size(); ++i ) {

   180 

   181         QPair<int,int> subContent = currentLevelDescription.submarines.at(i);

   182         GraphicsScene::SubmarineDescription submarineDesc = scene->submarinesData.at(subContent.first);

   183 

   184         for (int j = 0; j < subContent.second; ++j ) {

   185             SubMarine *sub = new SubMarine(submarineDesc.type, submarineDesc.name, submarineDesc.points);

   186             scene->addItem(sub);

   187             int random = (qrand() % 15 + 1);

   188             qreal x = random == 13 || random == 5 ? 0 : scene->width() - sub->size().width();

   189             qreal y = scene->height() -(qrand() % 150 + 1) - sub->size().height();

   190             sub->setPos(x,y);

   191             sub->setCurrentDirection(x == 0 ? SubMarine::Right : SubMarine::Left);

   192             sub->setCurrentSpeed(qrand() % 3 + 1);

   193         }

   194     }

   195 }

   196 

   197 /** Pause State */

   198 PauseState::PauseState(GraphicsScene *scene, QState *parent) : QState(parent),scene(scene)

   199 {

   200 }

   201 void PauseState::onEntry(QEvent *)

   202 {

   203     AnimationManager::self()->pauseAll();

   204     scene->boat->setEnabled(false);

   205 }

   206 void PauseState::onExit(QEvent *)

   207 {

   208     AnimationManager::self()->resumeAll();

   209     scene->boat->setEnabled(true);

   210     scene->boat->setFocus();

   211 }

   212 

   213 /** Lost State */

   214 LostState::LostState(GraphicsScene *scene, PlayState *game, QState *parent) : QState(parent), scene(scene), game(game)

   215 {

   216 }

   217 

   218 void LostState::onEntry(QEvent *)

   219 {

   220     //The message to display

   221     QString message = QString("You lose on level %1. Your score is %2.").arg(game->currentLevel+1).arg(game->score);

   222 

   223     //We set the level back to 0

   224     game->currentLevel = 0;

   225 

   226     //We set the score back to 0

   227     game->score = 0;

   228 

   229     //We clear the scene

   230     scene->clearScene();

   231 

   232     //We inform the player

   233     scene->textInformationItem->setMessage(message);

   234     scene->textInformationItem->show();

   235 }

   236 

   237 void LostState::onExit(QEvent *)

   238 {

   239     //we hide the information

   240     scene->textInformationItem->hide();

   241 }

   242 

   243 /** Win State */

   244 WinState::WinState(GraphicsScene *scene, PlayState *game, QState *parent) : QState(parent), scene(scene), game(game)

   245 {

   246 }

   247 

   248 void WinState::onEntry(QEvent *)

   249 {

   250     //We clear the scene

   251     scene->clearScene();

   252 

   253     QString message;

   254     if (scene->levelsData.size() - 1 != game->currentLevel) {

   255         message = QString("You win the level %1. Your score is %2.\nPress Space to continue.").arg(game->currentLevel+1).arg(game->score);

   256         //We increment the level number

   257         game->currentLevel++;

   258     } else {

   259         message = QString("You finish the game on level %1. Your score is %2.").arg(game->currentLevel+1).arg(game->score);

   260         //We set the level back to 0

   261         game->currentLevel = 0;

   262         //We set the score back to 0

   263         game->score = 0;

   264     }

   265 

   266     //We inform the player

   267     scene->textInformationItem->setMessage(message);

   268     scene->textInformationItem->show();

   269 }

   270 

   271 void WinState::onExit(QEvent *)

   272 {

   273     //we hide the information

   274     scene->textInformationItem->hide();

   275 }

   276 

   277 /** UpdateScore State */

   278 UpdateScoreState::UpdateScoreState(PlayState *g, QState *parent) : QState(parent), game(g)

   279 {

   280 }

   281 

   282 /** Win transition */

   283 UpdateScoreTransition::UpdateScoreTransition(GraphicsScene *scene, PlayState *game, QAbstractState *target)

   284     : QSignalTransition(scene,SIGNAL(subMarineDestroyed(int))),

   285     game(game), scene(scene)

   286 {

   287     setTargetState(target);

   288 }

   289 

   290 bool UpdateScoreTransition::eventTest(QEvent *event)

   291 {

   292     if (!QSignalTransition::eventTest(event))

   293         return false;

   294     QStateMachine::SignalEvent *se = static_cast<QStateMachine::SignalEvent*>(event);

   295     game->score += se->arguments().at(0).toInt();

   296     scene->progressItem->setScore(game->score);

   297     return true;

   298 }

   299 

   300 /** Win transition */

   301 WinTransition::WinTransition(GraphicsScene *scene, PlayState *game, QAbstractState *target)

   302     : QSignalTransition(scene,SIGNAL(allSubMarineDestroyed(int))),

   303     game(game), scene(scene)

   304 {

   305     setTargetState(target);

   306 }

   307 

   308 bool WinTransition::eventTest(QEvent *event)

   309 {

   310     if (!QSignalTransition::eventTest(event))

   311         return false;

   312     QStateMachine::SignalEvent *se = static_cast<QStateMachine::SignalEvent*>(event);

   313     game->score += se->arguments().at(0).toInt();

   314     scene->progressItem->setScore(game->score);

   315     return true;

   316 }

   317 

   318 /** Space transition */

   319 CustomSpaceTransition::CustomSpaceTransition(QWidget *widget, PlayState *game, QEvent::Type type, int key)

   320     :   QKeyEventTransition(widget, type, key),

   321         game(game)

   322 {

   323 }

   324 

   325 bool CustomSpaceTransition::eventTest(QEvent *event)

   326 {

   327     if (!QKeyEventTransition::eventTest(event))

   328         return false;

   329     return (game->currentLevel != 0);

   330 }