1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the examples of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #ifndef SUBMARINE_P_H

    43 #define SUBMARINE_P_H

    44 

    45 //

    46 //  W A R N I N G

    47 //  -------------

    48 //

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

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

    51 // version without notice, or even be removed.

    52 //

    53 // We mean it.

    54 //

    55 

    56 //Own

    57 #include "animationmanager.h"

    58 #include "submarine.h"

    59 #include "qanimationstate.h"

    60 

    61 //Qt

    62 #include <QtCore/QPropertyAnimation>

    63 #include <QtGui/QGraphicsScene>

    64 

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

    66 class MovementState : public QAnimationState

    67 {

    68 Q_OBJECT

    69 public:

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

    71     {

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

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

    74         setAnimation(movementAnimation);

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

    76         this->submarine = submarine;

    77     }

    78 

    79 protected slots:

    80     void onAnimationMovementValueChanged(const QVariant &)

    81     {

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

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

    84     }

    85 

    86 protected:

    87     void onEntry(QEvent *e)

    88     {

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

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

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

    92         }

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

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

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

    96         }

    97         QAnimationState::onEntry(e);

    98     }

    99 

   100 private:

   101     SubMarine *submarine;

   102     QPropertyAnimation *movementAnimation;

   103 };

   104 

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

   106 class ReturnState : public QAnimationState

   107 {

   108 public:

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

   110     {

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

   112         returnAnimation->setDuration(500);

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

   114         setAnimation(returnAnimation);

   115         this->submarine = submarine;

   116     }

   117 

   118 protected:

   119     void onEntry(QEvent *e)

   120     {

   121         returnAnimation->stop();

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

   123         QAnimationState::onEntry(e);

   124     }

   125 

   126     void onExit(QEvent *e)

   127     {

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

   129         QAnimationState::onExit(e);

   130     }

   131 

   132 private:

   133     SubMarine *submarine;

   134     QPropertyAnimation *returnAnimation;

   135 };

   136 

   137 #endif // SUBMARINE_P_H