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

     2 **

     3 ** Copyright (C) 2010 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 QtCore module 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 //Own

    43 #include "boat.h"

    44 #include "boat_p.h"

    45 #include "bomb.h"

    46 #include "pixmapitem.h"

    47 #include "graphicsscene.h"

    48 #include "animationmanager.h"

    49 #include "qanimationstate.h"

    50 

    51 //Qt

    52 #include <QtCore/QPropertyAnimation>

    53 #include <QtCore/QStateMachine>

    54 #include <QtCore/QHistoryState>

    55 #include <QtCore/QFinalState>

    56 #include <QtCore/QState>

    57 #include <QtCore/QSequentialAnimationGroup>

    58 

    59 static QAbstractAnimation *setupDestroyAnimation(Boat *boat)

    60 {

    61     QSequentialAnimationGroup *group = new QSequentialAnimationGroup(boat);

    62     for (int i = 1; i <= 4; i++) {

    63         PixmapItem *step = new PixmapItem(QString("explosion/boat/step%1").arg(i),GraphicsScene::Big, boat);

    64         step->setZValue(6);

    65         step->setOpacity(0);

    66 

    67         //fade-in

    68         QPropertyAnimation *anim = new QPropertyAnimation(step, "opacity");

    69         anim->setEndValue(1);

    70         anim->setDuration(100);

    71         group->insertAnimation(i-1, anim);

    72 

    73         //and then fade-out

    74         QPropertyAnimation *anim2 = new QPropertyAnimation(step, "opacity");

    75         anim2->setEndValue(0);

    76         anim2->setDuration(100);

    77         group->addAnimation(anim2);

    78     }

    79 

    80     AnimationManager::self()->registerAnimation(group);

    81     return group;

    82 }

    83 

    84 

    85 

    86 Boat::Boat() : PixmapItem(QString("boat"), GraphicsScene::Big),

    87     speed(0), bombsAlreadyLaunched(0), direction(Boat::None), movementAnimation(0)

    88 {

    89     setZValue(4);

    90     setFlags(QGraphicsItem::ItemIsFocusable);

    91 

    92     //The movement animation used to animate the boat

    93     movementAnimation = new QPropertyAnimation(this, "pos");

    94 

    95     //The destroy animation used to explode the boat

    96     destroyAnimation = setupDestroyAnimation(this);

    97 

    98     //We setup the state machine of the boat

    99     machine = new QStateMachine(this);

   100     QState *moving = new QState(machine);

   101     StopState *stopState = new StopState(this, moving);

   102     machine->setInitialState(moving);

   103     moving->setInitialState(stopState);

   104     MoveStateRight *moveStateRight = new MoveStateRight(this, moving);

   105     MoveStateLeft *moveStateLeft = new MoveStateLeft(this, moving);

   106     LaunchStateRight *launchStateRight = new LaunchStateRight(this, machine);

   107     LaunchStateLeft *launchStateLeft = new LaunchStateLeft(this, machine);

   108 

   109     //then setup the transitions for the rightMove state

   110     KeyStopTransition *leftStopRight = new KeyStopTransition(this, QEvent::KeyPress, Qt::Key_Left);

   111     leftStopRight->setTargetState(stopState);

   112     KeyMoveTransition *leftMoveRight = new KeyMoveTransition(this, QEvent::KeyPress, Qt::Key_Left);

   113     leftMoveRight->setTargetState(moveStateRight);

   114     KeyMoveTransition *rightMoveRight = new KeyMoveTransition(this, QEvent::KeyPress, Qt::Key_Right);

   115     rightMoveRight->setTargetState(moveStateRight);

   116     KeyMoveTransition *rightMoveStop = new KeyMoveTransition(this, QEvent::KeyPress, Qt::Key_Right);

   117     rightMoveStop->setTargetState(moveStateRight);

   118 

   119     //then setup the transitions for the leftMove state

   120     KeyStopTransition *rightStopLeft = new KeyStopTransition(this, QEvent::KeyPress, Qt::Key_Right);

   121     rightStopLeft->setTargetState(stopState);

   122     KeyMoveTransition *rightMoveLeft = new KeyMoveTransition(this, QEvent::KeyPress, Qt::Key_Right);

   123     rightMoveLeft->setTargetState(moveStateLeft);

   124     KeyMoveTransition *leftMoveLeft = new KeyMoveTransition(this, QEvent::KeyPress,Qt::Key_Left);

   125     leftMoveLeft->setTargetState(moveStateLeft);

   126     KeyMoveTransition *leftMoveStop = new KeyMoveTransition(this, QEvent::KeyPress,Qt::Key_Left);

   127     leftMoveStop->setTargetState(moveStateLeft);

   128 

   129     //We set up the right move state

   130     moveStateRight->addTransition(leftStopRight);

   131     moveStateRight->addTransition(leftMoveRight);

   132     moveStateRight->addTransition(rightMoveRight);

   133     stopState->addTransition(rightMoveStop);

   134 

   135     //We set up the left move state

   136     moveStateLeft->addTransition(rightStopLeft);

   137     moveStateLeft->addTransition(leftMoveLeft);

   138     moveStateLeft->addTransition(rightMoveLeft);

   139     stopState->addTransition(leftMoveStop);

   140 

   141     //The animation is finished, it means we reached the border of the screen, the boat is stopped so we move to the stop state

   142     moveStateLeft->addTransition(movementAnimation, SIGNAL(finished()), stopState);

   143     moveStateRight->addTransition(movementAnimation, SIGNAL(finished()), stopState);

   144 

   145     //We set up the keys for dropping bombs

   146     KeyLaunchTransition *upFireLeft = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Up);

   147     upFireLeft->setTargetState(launchStateRight);

   148     KeyLaunchTransition *upFireRight = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Up);

   149     upFireRight->setTargetState(launchStateRight);

   150     KeyLaunchTransition *upFireStop = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Up);

   151     upFireStop->setTargetState(launchStateRight);

   152     KeyLaunchTransition *downFireLeft = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Down);

   153     downFireLeft->setTargetState(launchStateLeft);

   154     KeyLaunchTransition *downFireRight = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Down);

   155     downFireRight->setTargetState(launchStateLeft);

   156     KeyLaunchTransition *downFireMove = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Down);

   157     downFireMove->setTargetState(launchStateLeft);

   158 

   159     //We set up transitions for fire up

   160     moveStateRight->addTransition(upFireRight);

   161     moveStateLeft->addTransition(upFireLeft);

   162     stopState->addTransition(upFireStop);

   163 

   164     //We set up transitions for fire down

   165     moveStateRight->addTransition(downFireRight);

   166     moveStateLeft->addTransition(downFireLeft);

   167     stopState->addTransition(downFireMove);

   168 

   169     //Finally the launch state should come back to its original state

   170     QHistoryState *historyState = new QHistoryState(moving);

   171     launchStateLeft->addTransition(historyState);

   172     launchStateRight->addTransition(historyState);

   173 

   174     QFinalState *final = new QFinalState(machine);

   175 

   176     //This state play the destroyed animation

   177     QAnimationState *destroyedState = new QAnimationState(machine);

   178     destroyedState->setAnimation(destroyAnimation);

   179 

   180     //Play a nice animation when the boat is destroyed

   181     moving->addTransition(this, SIGNAL(boatDestroyed()), destroyedState);

   182 

   183     //Transition to final state when the destroyed animation is finished

   184     destroyedState->addTransition(destroyedState, SIGNAL(animationFinished()), final);

   185 

   186     //The machine has finished to be executed, then the boat is dead

   187     connect(machine,SIGNAL(finished()), this, SIGNAL(boatExecutionFinished()));

   188 

   189 }

   190 

   191 void Boat::run()

   192 {

   193     //We register animations

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

   195     AnimationManager::self()->registerAnimation(destroyAnimation);

   196     machine->start();

   197 }

   198 

   199 void Boat::stop()

   200 {

   201     movementAnimation->stop();

   202     machine->stop();

   203 }

   204 

   205 void Boat::updateBoatMovement()

   206 {

   207     if (speed == 0 || direction == Boat::None) {

   208         movementAnimation->stop();

   209         return;

   210     }

   211 

   212     movementAnimation->stop();

   213 

   214     if (direction == Boat::Left) {

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

   216         movementAnimation->setDuration(x()/speed*15);

   217     }

   218     else /*if (direction == Boat::Right)*/ {

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

   220         movementAnimation->setDuration((scene()->width()-size().width()-x())/speed*15);

   221     }

   222     movementAnimation->start();

   223 }

   224 

   225 void Boat::destroy()

   226 {

   227     movementAnimation->stop();

   228     emit boatDestroyed();

   229 }

   230 

   231 int Boat::bombsLaunched() const

   232 {

   233     return bombsAlreadyLaunched;

   234 }

   235 

   236 void Boat::setBombsLaunched(int number)

   237 {

   238     if (number > MAX_BOMB) {

   239         qWarning("Boat::setBombsLaunched : It impossible to launch that number of bombs");

   240         return;

   241     }

   242     bombsAlreadyLaunched = number;

   243 }

   244 

   245 int Boat::currentSpeed() const

   246 {

   247     return speed;

   248 }

   249 

   250 void Boat::setCurrentSpeed(int speed)

   251 {

   252     if (speed > 3 || speed < 0) {

   253         qWarning("Boat::setCurrentSpeed: The boat can't run on that speed");

   254         return;

   255     }

   256     this->speed = speed;

   257 }

   258 

   259 enum Boat::Movement Boat::currentDirection() const

   260 {

   261     return direction;

   262 }

   263 

   264 void Boat::setCurrentDirection(Movement direction)

   265 {

   266     this->direction = direction;

   267 }

   268 

   269 int Boat::type() const

   270 {

   271     return Type;

   272 }