source: trunk/demos/sub-attaq/states.cpp@ 887

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//Own
#include "states.h"
#include "graphicsscene.h"
#include "boat.h"
#include "submarine.h"
#include "torpedo.h"
#include "animationmanager.h"
#include "progressitem.h"
#include "textinformationitem.h"

//Qt
#include <QtGui/QMessageBox>
#include <QtGui/QGraphicsView>
#include <QtCore/QStateMachine>
#include <QtGui/QKeyEventTransition>
#include <QtCore/QFinalState>

PlayState::PlayState(GraphicsScene *scene, QState *parent)
    : QState(parent),
    scene(scene),
    machine(0),
    currentLevel(0),
    score(0)
{
}

PlayState::~PlayState()
{
    delete machine;
}

void PlayState::onEntry(QEvent *)
{
    //We are now playing?
    if (machine) {
        machine->stop();
        //we hide the information
        scene->textInformationItem->hide();
        scene->clearScene();
        currentLevel = 0;
        score = 0;
        delete machine;
    }

    machine = new QStateMachine;

    //This state is when player is playing
    LevelState *levelState = new LevelState(scene, this, machine);

    //This state is when the player is actually playing but the game is not paused
    QState *playingState = new QState(levelState);
    levelState->setInitialState(playingState);

    //This state is when the game is paused
    PauseState *pauseState = new PauseState(scene, levelState);

    //We have one view, it receive the key press event
    QKeyEventTransition *pressPplay = new QKeyEventTransition(scene->views().at(0), QEvent::KeyPress, Qt::Key_P);
    pressPplay->setTargetState(pauseState);
    QKeyEventTransition *pressPpause = new QKeyEventTransition(scene->views().at(0), QEvent::KeyPress, Qt::Key_P);
    pressPpause->setTargetState(playingState);

    //Pause "P" is triggered, the player pause the game
    playingState->addTransition(pressPplay);

    //To get back playing when the game has been paused
    pauseState->addTransition(pressPpause);

    //This state is when player have lost
    LostState *lostState = new LostState(scene, this, machine);

    //This state is when player have won
    WinState *winState = new WinState(scene, this, machine);

    //The boat has been destroyed then the game is finished
    levelState->addTransition(scene->boat, SIGNAL(boatExecutionFinished()),lostState);

    //This transition check if we won or not
    WinTransition *winTransition = new WinTransition(scene, this, winState);

    //The boat has been destroyed then the game is finished
    levelState->addTransition(winTransition);

    //This state is an animation when the score changed
    UpdateScoreState *scoreState = new UpdateScoreState(this, levelState);

    //This transition update the score when a submarine die
    UpdateScoreTransition *scoreTransition = new UpdateScoreTransition(scene, this, levelState);
    scoreTransition->setTargetState(scoreState);

    //The boat has been destroyed then the game is finished
    playingState->addTransition(scoreTransition);

    //We go back to play state
    scoreState->addTransition(playingState);

    //We start playing!!!
    machine->setInitialState(levelState);

    //Final state
    QFinalState *final = new QFinalState(machine);

    //This transition is triggered when the player press space after completing a level
    CustomSpaceTransition *spaceTransition = new CustomSpaceTransition(scene->views().at(0), this, QEvent::KeyPress, Qt::Key_Space);
    spaceTransition->setTargetState(levelState);
    winState->addTransition(spaceTransition);

    //We lost we should reach the final state
    lostState->addTransition(lostState, SIGNAL(finished()), final);

    machine->start();
}

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