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    41 

    42 //Own

    43 #include "graphicsscene.h"

    44 #include "states.h"

    45 #include "boat.h"

    46 #include "submarine.h"

    47 #include "torpedo.h"

    48 #include "bomb.h"

    49 #include "pixmapitem.h"

    50 #include "animationmanager.h"

    51 #include "qanimationstate.h"

    52 #include "progressitem.h"

    53 #include "textinformationitem.h"

    54 

    55 //Qt

    56 #include <QtCore/QPropertyAnimation>

    57 #include <QtCore/QSequentialAnimationGroup>

    58 #include <QtCore/QParallelAnimationGroup>

    59 #include <QtCore/QStateMachine>

    60 #include <QtCore/QFinalState>

    61 #include <QtCore/QPauseAnimation>

    62 #include <QtGui/QAction>

    63 #include <QtCore/QDir>

    64 #include <QtGui/QApplication>

    65 #include <QtGui/QMessageBox>

    66 #include <QtGui/QGraphicsView>

    67 #include <QtGui/QGraphicsSceneMouseEvent>

    68 #include <QtCore/QXmlStreamReader>

    69 

    70 GraphicsScene::GraphicsScene(int x, int y, int width, int height, Mode mode)

    71     : QGraphicsScene(x , y, width, height), mode(mode), boat(new Boat)

    72 {

    73     PixmapItem *backgroundItem = new PixmapItem(QString("background"),mode);

    74     backgroundItem->setZValue(1);

    75     backgroundItem->setPos(0,0);

    76     addItem(backgroundItem);

    77 

    78     PixmapItem *surfaceItem = new PixmapItem(QString("surface"),mode);

    79     surfaceItem->setZValue(3);

    80     surfaceItem->setPos(0,sealLevel() - surfaceItem->boundingRect().height()/2);

    81     addItem(surfaceItem);

    82 

    83     //The item that display score and level

    84     progressItem = new ProgressItem(backgroundItem);

    85 

    86     textInformationItem = new TextInformationItem(backgroundItem);

    87     textInformationItem->hide();

    88     //We create the boat

    89     addItem(boat);

    90     boat->setPos(this->width()/2, sealLevel() - boat->size().height());

    91     boat->hide();

    92 

    93     //parse the xml that contain all data of the game

    94     QXmlStreamReader reader;

    95     QFile file(":data.xml");

    96     file.open(QIODevice::ReadOnly);

    97     reader.setDevice(&file);

    98     LevelDescription currentLevel;

    99     while (!reader.atEnd()) {

   100          reader.readNext();

   101          if (reader.tokenType() == QXmlStreamReader::StartElement) {

   102              if (reader.name() == "submarine") {

   103                  SubmarineDescription desc;

   104                  desc.name = reader.attributes().value("name").toString();

   105                  desc.points = reader.attributes().value("points").toString().toInt();

   106                  desc.type = reader.attributes().value("type").toString().toInt();

   107                  submarinesData.append(desc);

   108              } else if (reader.name() == "level") {

   109                  currentLevel.id = reader.attributes().value("id").toString().toInt();

   110                  currentLevel.name = reader.attributes().value("name").toString();

   111              } else if (reader.name() == "subinstance") {

   112                  currentLevel.submarines.append(qMakePair(reader.attributes().value("type").toString().toInt(), reader.attributes().value("nb").toString().toInt()));

   113              }

   114          } else if (reader.tokenType() == QXmlStreamReader::EndElement) {

   115             if (reader.name() == "level") {

   116                 levelsData.insert(currentLevel.id, currentLevel);

   117                 currentLevel.submarines.clear();

   118             }

   119          }

   120    }

   121 }

   122 

   123 qreal GraphicsScene::sealLevel() const

   124 {

   125     return (mode == Big) ? 220 : 160;

   126 }

   127 

   128 void GraphicsScene::setupScene(QAction *newAction, QAction *quitAction)

   129 {

   130     static const int nLetters = 10;

   131     static struct {

   132         char const *pix;

   133         qreal initX, initY;

   134         qreal destX, destY;

   135     } logoData[nLetters] = {

   136         {"s",   -1000, -1000, 300, 150 },

   137         {"u",    -800, -1000, 350, 150 },

   138         {"b",    -600, -1000, 400, 120 },

   139         {"dash", -400, -1000, 460, 150 },

   140         {"a",    1000,  2000, 350, 250 },

   141         {"t",     800,  2000, 400, 250 },

   142         {"t2",    600,  2000, 430, 250 },

   143         {"a2",    400,  2000, 465, 250 },

   144         {"q",     200,  2000, 510, 250 },

   145         {"excl",    0,  2000, 570, 220 } };

   146 

   147     QSequentialAnimationGroup * lettersGroupMoving = new QSequentialAnimationGroup(this);

   148     QParallelAnimationGroup * lettersGroupFading = new QParallelAnimationGroup(this);

   149 

   150     for (int i = 0; i < nLetters; ++i) {

   151         PixmapItem *logo = new PixmapItem(QLatin1String(":/logo-") + logoData[i].pix, this);

   152         logo->setPos(logoData[i].initX, logoData[i].initY);

   153         logo->setZValue(i + 3);

   154         //creation of the animations for moving letters

   155         QPropertyAnimation *moveAnim = new QPropertyAnimation(logo, "pos", lettersGroupMoving);

   156         moveAnim->setEndValue(QPointF(logoData[i].destX, logoData[i].destY));

   157         moveAnim->setDuration(200);

   158         moveAnim->setEasingCurve(QEasingCurve::OutElastic);

   159         lettersGroupMoving->addPause(50);

   160         //creation of the animations for fading out the letters

   161         QPropertyAnimation *fadeAnim = new QPropertyAnimation(logo, "opacity", lettersGroupFading);

   162         fadeAnim->setDuration(800);

   163         fadeAnim->setEndValue(0);

   164         fadeAnim->setEasingCurve(QEasingCurve::OutQuad);

   165     }

   166 

   167     QStateMachine *machine = new QStateMachine(this);

   168 

   169     //This state is when the player is playing

   170     PlayState *gameState = new PlayState(this, machine);

   171 

   172     //Final state

   173     QFinalState *final = new QFinalState(machine);

   174 

   175     //Animation when the player enter in the game

   176     QAnimationState *lettersMovingState = new QAnimationState(machine);

   177     lettersMovingState->setAnimation(lettersGroupMoving);

   178 

   179     //Animation when the welcome screen disappear

   180     QAnimationState *lettersFadingState = new QAnimationState(machine);

   181     lettersFadingState->setAnimation(lettersGroupFading);

   182 

   183     //if new game then we fade out the welcome screen and start playing

   184     lettersMovingState->addTransition(newAction, SIGNAL(triggered()), lettersFadingState);

   185     lettersFadingState->addTransition(lettersFadingState, SIGNAL(animationFinished()), gameState);

   186 

   187     //New Game is triggered then player start playing

   188     gameState->addTransition(newAction, SIGNAL(triggered()), gameState);

   189 

   190     //Wanna quit, then connect to CTRL+Q

   191     gameState->addTransition(quitAction, SIGNAL(triggered()), final);

   192     lettersMovingState->addTransition(quitAction, SIGNAL(triggered()), final);

   193 

   194     //Welcome screen is the initial state

   195     machine->setInitialState(lettersMovingState);

   196 

   197     machine->start();

   198 

   199     //We reach the final state, then we quit

   200     connect(machine, SIGNAL(finished()), qApp, SLOT(quit()));

   201 }

   202 

   203 void GraphicsScene::addItem(Bomb *bomb)

   204 {

   205     bombs.insert(bomb);

   206     connect(bomb,SIGNAL(bombExecutionFinished()),this, SLOT(onBombExecutionFinished()));

   207     QGraphicsScene::addItem(bomb);

   208 }

   209 

   210 void GraphicsScene::addItem(Torpedo *torpedo)

   211 {

   212     torpedos.insert(torpedo);

   213     connect(torpedo,SIGNAL(torpedoExecutionFinished()),this, SLOT(onTorpedoExecutionFinished()));

   214     QGraphicsScene::addItem(torpedo);

   215 }

   216 

   217 void GraphicsScene::addItem(SubMarine *submarine)

   218 {

   219     submarines.insert(submarine);

   220     connect(submarine,SIGNAL(subMarineExecutionFinished()),this, SLOT(onSubMarineExecutionFinished()));

   221     QGraphicsScene::addItem(submarine);

   222 }

   223 

   224 void GraphicsScene::addItem(QGraphicsItem *item)

   225 {

   226     QGraphicsScene::addItem(item);

   227 }

   228 

   229 void GraphicsScene::onBombExecutionFinished()

   230 {

   231     Bomb *bomb = qobject_cast<Bomb *>(sender());

   232     bombs.remove(bomb);

   233     bomb->deleteLater();

   234     if (boat)

   235         boat->setBombsLaunched(boat->bombsLaunched() - 1);

   236 }

   237 

   238 void GraphicsScene::onTorpedoExecutionFinished()

   239 {

   240     Torpedo *torpedo = qobject_cast<Torpedo *>(sender());

   241     torpedos.remove(torpedo);

   242     torpedo->deleteLater();

   243 }

   244 

   245 void GraphicsScene::onSubMarineExecutionFinished()

   246 {

   247     SubMarine *submarine = qobject_cast<SubMarine *>(sender());

   248     submarines.remove(submarine);

   249     if (submarines.count() == 0)

   250         emit allSubMarineDestroyed(submarine->points());

   251     else

   252         emit subMarineDestroyed(submarine->points());

   253     submarine->deleteLater();

   254 }

   255 

   256 void GraphicsScene::clearScene()

   257 {

   258     foreach (SubMarine *sub, submarines) {

   259         sub->destroy();

   260         sub->deleteLater();

   261     }

   262 

   263     foreach (Torpedo *torpedo, torpedos) {

   264         torpedo->destroy();

   265         torpedo->deleteLater();

   266     }

   267 

   268     foreach (Bomb *bomb, bombs) {

   269         bomb->destroy();

   270         bomb->deleteLater();

   271     }

   272 

   273     submarines.clear();

   274     bombs.clear();

   275     torpedos.clear();

   276 

   277     AnimationManager::self()->unregisterAllAnimations();

   278 

   279     boat->stop();

   280     boat->hide();

   281 }