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Diffstat (limited to 'examples/animation/sub-attaq/torpedo.cpp')
-rw-r--r-- | examples/animation/sub-attaq/torpedo.cpp | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/examples/animation/sub-attaq/torpedo.cpp b/examples/animation/sub-attaq/torpedo.cpp new file mode 100644 index 0000000..4964192 --- /dev/null +++ b/examples/animation/sub-attaq/torpedo.cpp @@ -0,0 +1,126 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +//Own +#include "torpedo.h" +#include "pixmapitem.h" +#include "boat.h" +#include "graphicsscene.h" +#include "animationmanager.h" + +#if defined(QT_EXPERIMENTAL_SOLUTION) +#include "qpropertyanimation.h" +#include "qstatemachine.h" +#include "qfinalstate.h" +#include "qanimationstate.h" +#else +#include <QPropertyAnimation> +#include <QAnimationState> +#include <QStateMachine> +#include <QFinalState> +#endif + +Torpedo::Torpedo(QGraphicsItem * parent, Qt::WindowFlags wFlags) + : QGraphicsWidget(parent,wFlags), currentSpeed(0), launchAnimation(0) +{ + pixmapItem = new PixmapItem(QString::fromLatin1("torpedo"),GraphicsScene::Big, this); + setZValue(2); + setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed); + setFlags(QGraphicsItem::ItemIsMovable); + resize(pixmapItem->boundingRect().size()); +} + +void Torpedo::launch() +{ + 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 &))); + + //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(launchAnimation,machine->rootState()); + + machine->setInitialState(launched); + + //End + QFinalState *final = new QFinalState(machine->rootState()); + + //### Add a nice animation when the torpedo is destroyed + launched->addTransition(this, SIGNAL(torpedoExplosed()),final); + + //If the animation is finished, then we move to the final state + launched->addFinishedTransition(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 (item->type() == Boat::Type) { + Boat *b = static_cast<Boat *>(item); + b->destroy(); + } + } +} + +void Torpedo::destroy() +{ + launchAnimation->stop(); + emit torpedoExplosed(); +} |