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#ifndef STATES_H

#define STATES_H

//Qt

#include <QtCore/QState>

#include <QtCore/QSignalTransition>

#include <QtCore/QPropertyAnimation>

#include <QtGui/QKeyEventTransition>

#include <QtCore/QSet>

class GraphicsScene;

class Boat;

class SubMarine;

QT_BEGIN_NAMESPACE

class QStateMachine;

QT_END_NAMESPACE

class PlayState : public QState

{

public:

    PlayState(GraphicsScene *scene, QState *parent = 0);

    ~PlayState();

 protected:

    void onEntry(QEvent *);

private :

    GraphicsScene *scene;

    QStateMachine *machine;

    int currentLevel;

    int score;

    QState *parallelChild;

    friend class UpdateScoreState;

    friend class UpdateScoreTransition;

    friend class WinTransition;

    friend class CustomSpaceTransition;

    friend class WinState;

    friend class LostState;

    friend class LevelState;

};

class LevelState : public QState

{

public:

    LevelState(GraphicsScene *scene, PlayState *game, QState *parent = 0);

protected:

    void onEntry(QEvent *);

private :

    void initializeLevel();

    GraphicsScene *scene;

    PlayState *game;

};

class PauseState : public QState

{

public:

    PauseState(GraphicsScene *scene, QState *parent = 0);

protected:

    void onEntry(QEvent *);

    void onExit(QEvent *);

private :

    GraphicsScene *scene;

    Boat *boat;

};

class LostState : public QState

{

public:

    LostState(GraphicsScene *scene, PlayState *game, QState *parent = 0);

protected:

    void onEntry(QEvent *);

    void onExit(QEvent *);

private :

    GraphicsScene *scene;

    PlayState *game;

};

class WinState : public QState

{

public:

    WinState(GraphicsScene *scene, PlayState *game, QState *parent = 0);

protected:

    void onEntry(QEvent *);

    void onExit(QEvent *);

private :

    GraphicsScene *scene;

    PlayState *game;

};

class UpdateScoreState : public QState

{

public:

    UpdateScoreState(PlayState *game, QState *parent);

private:

    QPropertyAnimation *scoreAnimation;

    PlayState *game;

};

//These transtion is used to update the score

class UpdateScoreTransition : public QSignalTransition

{

public:

    UpdateScoreTransition(GraphicsScene *scene, PlayState *game, QAbstractState *target);

protected:

    virtual bool eventTest(QEvent *event);

private:

    PlayState * game;

    GraphicsScene *scene;

};

//These transtion test if we have won the game

class WinTransition : public QSignalTransition

{

public:

    WinTransition(GraphicsScene *scene, PlayState *game, QAbstractState *target);

protected:

    virtual bool eventTest(QEvent *event);

private:

    PlayState * game;

    GraphicsScene *scene;

};

//These transtion is true if one level has been completed and the player want to continue

 class CustomSpaceTransition : public QKeyEventTransition

{

public:

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

protected:

    virtual bool eventTest(QEvent *event);

private:

    PlayState *game;

    int key;

};

#endif // STATES_H