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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//Own
#include "torpedo.h"
#include "pixmapitem.h"
#include "boat.h"
#include "graphicsscene.h"
#include "animationmanager.h"
#include "qanimationstate.h"
#include <QtCore/QPropertyAnimation>
#include <QtCore/QStateMachine>
#include <QtCore/QFinalState>
Torpedo::Torpedo() : PixmapItem(QString::fromLatin1("torpedo"),GraphicsScene::Big),
currentSpeed(0)
{
setZValue(2);
}
void Torpedo::launch()
{
QPropertyAnimation *launchAnimation = new QPropertyAnimation(this, "pos");
AnimationManager::self()->registerAnimation(launchAnimation);
launchAnimation->setEndValue(QPointF(x(),qobject_cast<GraphicsScene *>(scene())->sealLevel() - 15));
launchAnimation->setEasingCurve(QEasingCurve::InQuad);
launchAnimation->setDuration(y()/currentSpeed*10);
connect(launchAnimation,SIGNAL(valueChanged(const QVariant &)),this,SLOT(onAnimationLaunchValueChanged(const QVariant &)));
connect(this,SIGNAL(torpedoExploded()), launchAnimation, SLOT(stop()));
//We setup the state machine of the torpedo
QStateMachine *machine = new QStateMachine(this);
//This state is when the launch animation is playing
QAnimationState *launched = new QAnimationState(machine);
launched->setAnimation(launchAnimation);
//End
QFinalState *final = new QFinalState(machine);
machine->setInitialState(launched);
//### Add a nice animation when the torpedo is destroyed
launched->addTransition(this, SIGNAL(torpedoExploded()),final);
//If the animation is finished, then we move to the final state
launched->addTransition(launched, SIGNAL(animationFinished()), final);
//The machine has finished to be executed, then the boat is dead
connect(machine,SIGNAL(finished()),this, SIGNAL(torpedoExecutionFinished()));
machine->start();
}
void Torpedo::setCurrentSpeed(int speed)
{
if (speed < 0) {
qWarning("Torpedo::setCurrentSpeed : The speed is invalid");
return;
}
currentSpeed = speed;
}
void Torpedo::onAnimationLaunchValueChanged(const QVariant &)
{
foreach (QGraphicsItem *item , collidingItems(Qt::IntersectsItemBoundingRect)) {
if (Boat *b = qgraphicsitem_cast<Boat*>(item))
b->destroy();
}
}
void Torpedo::destroy()
{
emit torpedoExploded();
}
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