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#ifndef BOAT_P_H

#define BOAT_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

//Own

#include "bomb.h"

#include "graphicsscene.h"

// Qt

#include <QtGui/QKeyEventTransition>

static const int MAX_BOMB = 5;

//These transtion test if we have to stop the boat (i.e current speed is 1)

class KeyStopTransition : public QKeyEventTransition

{

public:

    KeyStopTransition(Boat *b, QEvent::Type t, int k)

    : QKeyEventTransition(b, t, k), boat(b), key(k)

    {

    }

protected:

    virtual bool eventTest(QEvent *event)

    {

        if (!QKeyEventTransition::eventTest(event))

            return false;

        return (boat->currentSpeed() == 1);

    }

private:

    Boat * boat;

    int key;

};

//These transtion test if we have to move the boat (i.e current speed was 0 or another value)

 class KeyMoveTransition : public QKeyEventTransition

{

public:

    KeyMoveTransition(Boat *b, QEvent::Type t, int k)

    : QKeyEventTransition(b, t, k), boat(b), key(k)

    {

    }

protected:

    virtual bool eventTest(QEvent *event)

    {

        if (!QKeyEventTransition::eventTest(event))

            return false;

        return (boat->currentSpeed() >= 0);

    }

    void onTransition(QEvent *)

    {

        //We decrease the speed if needed

        if (key == Qt::Key_Left && boat->currentDirection() == Boat::Right)

            boat->setCurrentSpeed(boat->currentSpeed() - 1);

        else if (key == Qt::Key_Right && boat->currentDirection() == Boat::Left)

            boat->setCurrentSpeed(boat->currentSpeed() - 1);

        else if (boat->currentSpeed() < 3)

            boat->setCurrentSpeed(boat->currentSpeed() + 1);

        boat->updateBoatMovement();

    }

private:

    Boat * boat;

    int key;

};

//This transition trigger the bombs launch

 class KeyLaunchTransition : public QKeyEventTransition

{

public:

    KeyLaunchTransition(Boat *boat, QEvent::Type type, int key)

    : QKeyEventTransition(boat, type, key), boat(boat), key(key)

    {

    }

protected:

    virtual bool eventTest(QEvent *event)

    {

        if (!QKeyEventTransition::eventTest(event))

            return false;

        //We have enough bomb?

        return (boat->bombsLaunched() < MAX_BOMB);

    }

private:

    Boat * boat;

    int key;

};

//This state is describing when the boat is moving right

class MoveStateRight : public QState

{

public:

    MoveStateRight(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)

    {

    }

protected:

    void onEntry(QEvent *)

    {

        boat->setCurrentDirection(Boat::Right);

        boat->updateBoatMovement();

    }

private:

    Boat * boat;

};

 //This state is describing when the boat is moving left

class MoveStateLeft : public QState

{

public:

    MoveStateLeft(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)

    {

    }

protected:

    void onEntry(QEvent *)

    {

        boat->setCurrentDirection(Boat::Left);

        boat->updateBoatMovement();

    }

private:

    Boat * boat;

};

//This state is describing when the boat is in a stand by position

class StopState : public QState

{

public:

    StopState(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)

    {

    }

protected:

    void onEntry(QEvent *)

    {

        boat->setCurrentSpeed(0);

        boat->setCurrentDirection(Boat::None);

        boat->updateBoatMovement();

    }

private:

    Boat * boat;

};

//This state is describing the launch of the torpedo on the right

class LaunchStateRight : public QState

{

public:

    LaunchStateRight(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)

    {

    }

protected:

    void onEntry(QEvent *)

    {

        Bomb *b = new Bomb();

        b->setPos(boat->x()+boat->size().width(),boat->y());

        GraphicsScene *scene = static_cast<GraphicsScene *>(boat->scene());

        scene->addItem(b);

        b->launch(Bomb::Right);

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

    }

private:

    Boat * boat;

};

//This state is describing the launch of the torpedo on the left

class LaunchStateLeft : public QState

{

public:

    LaunchStateLeft(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)

    {

    }

protected:

    void onEntry(QEvent *)

    {

        Bomb *b = new Bomb();

        b->setPos(boat->x() - b->size().width(), boat->y());

        GraphicsScene *scene = static_cast<GraphicsScene *>(boat->scene());

        scene->addItem(b);

        b->launch(Bomb::Left);

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

    }

private:

    Boat * boat;

};

#endif // BOAT_P_H