/****************************************************************************+
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**+
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** Copyright (C) 2010 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 QtCore module 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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**+
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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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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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//Own+
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#include "boat.h"+
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#include "boat_p.h"+
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#include "bomb.h"+
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#include "pixmapitem.h"+
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#include "graphicsscene.h"+
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#include "animationmanager.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 <QtCore/QStateMachine>+
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#include <QtCore/QHistoryState>+
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#include <QtCore/QFinalState>+
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#include <QtCore/QState>+
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#include <QtCore/QSequentialAnimationGroup>+
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+
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static QAbstractAnimation *setupDestroyAnimation(Boat *boat)+
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{+
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    QSequentialAnimationGroup *group = new QSequentialAnimationGroup(boat);+
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    for (int i = 1; i <= 4; i++) {+
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        PixmapItem *step = new PixmapItem(QString("explosion/boat/step%1").arg(i),GraphicsScene::Big, boat);+
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        step->setZValue(6);+
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        step->setOpacity(0);+
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+
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        //fade-in+
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        QPropertyAnimation *anim = new QPropertyAnimation(step, "opacity");+
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        anim->setEndValue(1);+
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        anim->setDuration(100);+
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        group->insertAnimation(i-1, anim);+
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+
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        //and then fade-out+
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        QPropertyAnimation *anim2 = new QPropertyAnimation(step, "opacity");+
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        anim2->setEndValue(0);+
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        anim2->setDuration(100);+
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        group->addAnimation(anim2);+
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    }+
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+
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    AnimationManager::self()->registerAnimation(group);+
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    return group;+
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}+
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+
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+
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+
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Boat::Boat() : PixmapItem(QString("boat"), GraphicsScene::Big),+
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    speed(0), bombsAlreadyLaunched(0), direction(Boat::None), movementAnimation(0)+
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{+
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    setZValue(4);+
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    setFlags(QGraphicsItem::ItemIsFocusable);+
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+
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    //The movement animation used to animate the boat+
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    movementAnimation = new QPropertyAnimation(this, "pos");+
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+
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    //The destroy animation used to explode the boat+
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    destroyAnimation = setupDestroyAnimation(this);+
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+
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    //We setup the state machine of the boat+
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    machine = new QStateMachine(this);+
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    QState *moving = new QState(machine);+
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    StopState *stopState = new StopState(this, moving);+
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    machine->setInitialState(moving);+
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    moving->setInitialState(stopState);+
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    MoveStateRight *moveStateRight = new MoveStateRight(this, moving);+
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    MoveStateLeft *moveStateLeft = new MoveStateLeft(this, moving);+
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    LaunchStateRight *launchStateRight = new LaunchStateRight(this, machine);+
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    LaunchStateLeft *launchStateLeft = new LaunchStateLeft(this, machine);+
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+
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    //then setup the transitions for the rightMove state+
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    KeyStopTransition *leftStopRight = new KeyStopTransition(this, QEvent::KeyPress, Qt::Key_Left);+
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    leftStopRight->setTargetState(stopState);+
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    KeyMoveTransition *leftMoveRight = new KeyMoveTransition(this, QEvent::KeyPress, Qt::Key_Left);+
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    leftMoveRight->setTargetState(moveStateRight);+
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    KeyMoveTransition *rightMoveRight = new KeyMoveTransition(this, QEvent::KeyPress, Qt::Key_Right);+
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    rightMoveRight->setTargetState(moveStateRight);+
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    KeyMoveTransition *rightMoveStop = new KeyMoveTransition(this, QEvent::KeyPress, Qt::Key_Right);+
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    rightMoveStop->setTargetState(moveStateRight);+
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+
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    //then setup the transitions for the leftMove state+
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    KeyStopTransition *rightStopLeft = new KeyStopTransition(this, QEvent::KeyPress, Qt::Key_Right);+
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    rightStopLeft->setTargetState(stopState);+
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    KeyMoveTransition *rightMoveLeft = new KeyMoveTransition(this, QEvent::KeyPress, Qt::Key_Right);+
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    rightMoveLeft->setTargetState(moveStateLeft);+
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    KeyMoveTransition *leftMoveLeft = new KeyMoveTransition(this, QEvent::KeyPress,Qt::Key_Left);+
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    leftMoveLeft->setTargetState(moveStateLeft);+
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    KeyMoveTransition *leftMoveStop = new KeyMoveTransition(this, QEvent::KeyPress,Qt::Key_Left);+
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    leftMoveStop->setTargetState(moveStateLeft);+
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+
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    //We set up the right move state+
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    moveStateRight->addTransition(leftStopRight);+
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    moveStateRight->addTransition(leftMoveRight);+
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    moveStateRight->addTransition(rightMoveRight);+
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    stopState->addTransition(rightMoveStop);+
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+
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    //We set up the left move state+
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    moveStateLeft->addTransition(rightStopLeft);+
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    moveStateLeft->addTransition(leftMoveLeft);+
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    moveStateLeft->addTransition(rightMoveLeft);+
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    stopState->addTransition(leftMoveStop);+
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+
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    //The animation is finished, it means we reached the border of the screen, the boat is stopped so we move to the stop state+
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    moveStateLeft->addTransition(movementAnimation, SIGNAL(finished()), stopState);+
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    moveStateRight->addTransition(movementAnimation, SIGNAL(finished()), stopState);+
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+
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    //We set up the keys for dropping bombs+
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    KeyLaunchTransition *upFireLeft = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Up);+
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    upFireLeft->setTargetState(launchStateRight);+
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    KeyLaunchTransition *upFireRight = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Up);+
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    upFireRight->setTargetState(launchStateRight);+
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    KeyLaunchTransition *upFireStop = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Up);+
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    upFireStop->setTargetState(launchStateRight);+
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    KeyLaunchTransition *downFireLeft = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Down);+
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    downFireLeft->setTargetState(launchStateLeft);+
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    KeyLaunchTransition *downFireRight = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Down);+
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    downFireRight->setTargetState(launchStateLeft);+
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    KeyLaunchTransition *downFireMove = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Down);+
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    downFireMove->setTargetState(launchStateLeft);+
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+
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    //We set up transitions for fire up+
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    moveStateRight->addTransition(upFireRight);+
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    moveStateLeft->addTransition(upFireLeft);+
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    stopState->addTransition(upFireStop);+
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+
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    //We set up transitions for fire down+
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    moveStateRight->addTransition(downFireRight);+
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    moveStateLeft->addTransition(downFireLeft);+
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    stopState->addTransition(downFireMove);+
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+
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    //Finally the launch state should come back to its original state+
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    QHistoryState *historyState = new QHistoryState(moving);+
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    launchStateLeft->addTransition(historyState);+
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    launchStateRight->addTransition(historyState);+
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+
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    QFinalState *final = new QFinalState(machine);+
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+
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    //This state play the destroyed animation+
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    QAnimationState *destroyedState = new QAnimationState(machine);+
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    destroyedState->setAnimation(destroyAnimation);+
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+
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    //Play a nice animation when the boat is destroyed+
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    moving->addTransition(this, SIGNAL(boatDestroyed()), destroyedState);+
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+
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    //Transition to final state when the destroyed animation is finished+
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    destroyedState->addTransition(destroyedState, SIGNAL(animationFinished()), final);+
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+
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    //The machine has finished to be executed, then the boat is dead+
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    connect(machine,SIGNAL(finished()), this, SIGNAL(boatExecutionFinished()));+
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+
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}+
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+
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void Boat::run()+
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{+
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    //We register animations+
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    AnimationManager::self()->registerAnimation(movementAnimation);+
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    AnimationManager::self()->registerAnimation(destroyAnimation);+
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    machine->start();+
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}+
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+
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void Boat::stop()+
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{+
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    movementAnimation->stop();+
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    machine->stop();+
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}+
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+
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void Boat::updateBoatMovement()+
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{+
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    if (speed == 0 || direction == Boat::None) {+
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        movementAnimation->stop();+
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        return;+
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    }+
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+
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    movementAnimation->stop();+
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+
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    if (direction == Boat::Left) {+
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        movementAnimation->setEndValue(QPointF(0,y()));+
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        movementAnimation->setDuration(x()/speed*15);+
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    }+
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    else /*if (direction == Boat::Right)*/ {+
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        movementAnimation->setEndValue(QPointF(scene()->width()-size().width(),y()));+
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        movementAnimation->setDuration((scene()->width()-size().width()-x())/speed*15);+
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    }+
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    movementAnimation->start();+
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}+
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+
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void Boat::destroy()+
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{+
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    movementAnimation->stop();+
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    emit boatDestroyed();+
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}+
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+
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int Boat::bombsLaunched() const+
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{+
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    return bombsAlreadyLaunched;+
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}+
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+
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void Boat::setBombsLaunched(int number)+
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{+
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    if (number > MAX_BOMB) {+
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        qWarning("Boat::setBombsLaunched : It impossible to launch that number of bombs");+
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        return;+
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    }+
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    bombsAlreadyLaunched = number;+
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}+
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+
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int Boat::currentSpeed() const+
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{+
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    return speed;+
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}+
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+
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void Boat::setCurrentSpeed(int speed)+
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{+
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    if (speed > 3 || speed < 0) {+
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        qWarning("Boat::setCurrentSpeed: The boat can't run on that speed");+
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        return;+
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    }+
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    this->speed = speed;+
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}+
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+
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enum Boat::Movement Boat::currentDirection() const+
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{+
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    return direction;+
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}+
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+
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void Boat::setCurrentDirection(Movement direction)+
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{+
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    this->direction = direction;+
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}+
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+
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int Boat::type() const+
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{+
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    return Type;+
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}+
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