/****************************************************************************+
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**+
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the examples of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#ifndef SUBMARINE_P_H+
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#define SUBMARINE_P_H+
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+
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//+
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//  W A R N I N G+
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//  -------------+
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//+
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// This file is not part of the Qt API.  It exists purely as an+
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// implementation detail.  This header file may change from version to+
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// version without notice, or even be removed.+
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//+
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// We mean it.+
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//+
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+
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//Own+
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#include "animationmanager.h"+
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#include "submarine.h"+
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#include "qanimationstate.h"+
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+
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//Qt+
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#include <QtCore/QPropertyAnimation>+
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#include <QtGui/QGraphicsScene>+
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+
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//This state is describing when the boat is moving right+
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class MovementState : public QAnimationState+
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{+
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Q_OBJECT+
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public:+
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    MovementState(SubMarine *submarine, QState *parent = 0) : QAnimationState(parent)+
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    {+
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        movementAnimation = new QPropertyAnimation(submarine, "pos");+
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        connect(movementAnimation,SIGNAL(valueChanged(const QVariant &)),this,SLOT(onAnimationMovementValueChanged(const QVariant &)));+
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        setAnimation(movementAnimation);+
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        AnimationManager::self()->registerAnimation(movementAnimation);+
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        this->submarine = submarine;+
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    }+
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+
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protected slots:+
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    void onAnimationMovementValueChanged(const QVariant &)+
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    {+
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        if (qrand() % 200 + 1 == 3)+
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            submarine->launchTorpedo(qrand() % 3 + 1);+
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    }+
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+
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protected:+
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    void onEntry(QEvent *e)+
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    {+
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        if (submarine->currentDirection() == SubMarine::Left) {+
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            movementAnimation->setEndValue(QPointF(0,submarine->y()));+
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            movementAnimation->setDuration(submarine->x()/submarine->currentSpeed()*12);+
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        }+
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        else /*if (submarine->currentDirection() == SubMarine::Right)*/ {+
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            movementAnimation->setEndValue(QPointF(submarine->scene()->width()-submarine->size().width(),submarine->y()));+
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            movementAnimation->setDuration((submarine->scene()->width()-submarine->size().width()-submarine->x())/submarine->currentSpeed()*12);+
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        }+
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        QAnimationState::onEntry(e);+
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    }+
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+
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private:+
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    SubMarine *submarine;+
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    QPropertyAnimation *movementAnimation;+
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};+
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+
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//This state is describing when the boat is moving right+
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class ReturnState : public QAnimationState+
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{+
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public:+
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    ReturnState(SubMarine *submarine, QState *parent = 0) : QAnimationState(parent)+
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    {+
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        returnAnimation = new QPropertyAnimation(submarine->rotation(), "angle");+
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        returnAnimation->setDuration(500);+
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        AnimationManager::self()->registerAnimation(returnAnimation);+
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        setAnimation(returnAnimation);+
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        this->submarine = submarine;+
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    }+
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+
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protected:+
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    void onEntry(QEvent *e)+
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    {+
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        returnAnimation->stop();+
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        returnAnimation->setEndValue(submarine->currentDirection() == SubMarine::Right ? 360. : 180.);+
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        QAnimationState::onEntry(e);+
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    }+
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+
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    void onExit(QEvent *e)+
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    {+
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        submarine->currentDirection() == SubMarine::Right ? submarine->setCurrentDirection(SubMarine::Left) : submarine->setCurrentDirection(SubMarine::Right);+
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        QAnimationState::onExit(e);+
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    }+
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+
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private:+
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    SubMarine *submarine;+
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    QPropertyAnimation *returnAnimation;+
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};+
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+
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#endif // SUBMARINE_P_H+
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