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#ifndef STATES_H
#define STATES_H

//Qt
#if defined(QT_EXPERIMENTAL_SOLUTION)
#include "qstate.h"
#include "qsignaltransition.h"
#include "qpropertyanimation.h"
#else
#include <QState>
#include <QSignalTransition>
#include <QPropertyAnimation>
#endif
#include <QSet>

class GraphicsScene;
class Boat;
class SubMarine;
class QStateMachine;

class PlayState : public QState
{
public:
    PlayState(GraphicsScene *scene, QState *parent = 0);
    ~PlayState();
    void initializeLevel();

 protected:
    void onEntry();

private :
    GraphicsScene *scene;
    QStateMachine *machine;
    int currentLevel;
    int score;
    QState *parallelChild;

    friend class UpdateScoreState;
    friend class UpdateScoreTransition;
    friend class WinTransition;
    friend class WinState;
    friend class LostState;
};

class PauseState : public QState
{
public:
    PauseState(GraphicsScene *scene, QState *parent = 0);

protected:
    void onEntry();
    void onExit();
private :
    GraphicsScene *scene;
    Boat *boat;
};

class LostState : public QState
{
public:
    LostState(GraphicsScene *scene, PlayState *game, QState *parent = 0);

protected:
    void onEntry();
private :
    GraphicsScene *scene;
    PlayState *game;
};

class WinState : public QState
{
public:
    WinState(GraphicsScene *scene, PlayState *game, QState *parent = 0);

protected:
    void onEntry();
private :
    GraphicsScene *scene;
    PlayState *game;
};

class UpdateScoreState : public QState
{
public:
    UpdateScoreState(PlayState *game, QState *parent);
protected:
    void onEntry();
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) const;
private:
    PlayState * game;
};

//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) const;
private:
    PlayState * game;
};

#endif // STATES_H