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#ifndef SUBMARINE_P_H

#define SUBMARINE_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 "animationmanager.h"

#include "submarine.h"

#include "qanimationstate.h"

//Qt

#include <QtCore/QPropertyAnimation>

#include <QtGui/QGraphicsScene>

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

class MovementState : public QAnimationState

{

Q_OBJECT

public:

    MovementState(SubMarine *submarine, QState *parent = 0) : QAnimationState(parent)

    {

        movementAnimation = new QPropertyAnimation(submarine, "pos");

        connect(movementAnimation,SIGNAL(valueChanged(const QVariant &)),this,SLOT(onAnimationMovementValueChanged(const QVariant &)));

        setAnimation(movementAnimation);

        AnimationManager::self()->registerAnimation(movementAnimation);

        this->submarine = submarine;

    }

protected slots:

    void onAnimationMovementValueChanged(const QVariant &)

    {

        if (qrand() % 200 + 1 == 3)

            submarine->launchTorpedo(qrand() % 3 + 1);

    }

protected:

    void onEntry(QEvent *e)

    {

        if (submarine->currentDirection() == SubMarine::Left) {

            movementAnimation->setEndValue(QPointF(0,submarine->y()));

            movementAnimation->setDuration(submarine->x()/submarine->currentSpeed()*12);

        }

        else /*if (submarine->currentDirection() == SubMarine::Right)*/ {

            movementAnimation->setEndValue(QPointF(submarine->scene()->width()-submarine->size().width(),submarine->y()));

            movementAnimation->setDuration((submarine->scene()->width()-submarine->size().width()-submarine->x())/submarine->currentSpeed()*12);

        }

        QAnimationState::onEntry(e);

    }

private:

    SubMarine *submarine;

    QPropertyAnimation *movementAnimation;

};

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

class ReturnState : public QAnimationState

{

public:

    ReturnState(SubMarine *submarine, QState *parent = 0) : QAnimationState(parent)

    {

        returnAnimation = new QPropertyAnimation(submarine->rotation(), "angle");

        returnAnimation->setDuration(500);

        AnimationManager::self()->registerAnimation(returnAnimation);

        setAnimation(returnAnimation);

        this->submarine = submarine;

    }

protected:

    void onEntry(QEvent *e)

    {

        returnAnimation->stop();

        returnAnimation->setEndValue(submarine->currentDirection() == SubMarine::Right ? 360. : 180.);

        QAnimationState::onEntry(e);

    }

    void onExit(QEvent *e)

    {

        submarine->currentDirection() == SubMarine::Right ? submarine->setCurrentDirection(SubMarine::Left) : submarine->setCurrentDirection(SubMarine::Right);

        QAnimationState::onExit(e);

    }

private:

    SubMarine *submarine;

    QPropertyAnimation *returnAnimation;

};

#endif // SUBMARINE_P_H