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7 ** This file is part of the QtCore module of the Qt Toolkit.
9 ** $QT_BEGIN_LICENSE:LGPL$
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11 ** This file contains pre-release code and may not be distributed.
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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
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40 ****************************************************************************/
44 #include "pixmapitem.h"
46 #include "graphicsscene.h"
47 #include "animationmanager.h"
48 #include "qanimationstate.h"
50 #include <QtCore/QPropertyAnimation>
51 #include <QtCore/QStateMachine>
52 #include <QtCore/QFinalState>
54 Torpedo::Torpedo(QGraphicsItem
* parent
, Qt::WindowFlags wFlags
)
55 : QGraphicsWidget(parent
,wFlags
), currentSpeed(0), launchAnimation(0)
57 pixmapItem
= new PixmapItem(QString::fromLatin1("torpedo"),GraphicsScene::Big
, this);
59 setSizePolicy(QSizePolicy::Fixed
, QSizePolicy::Fixed
);
60 setFlags(QGraphicsItem::ItemIsMovable
);
61 resize(pixmapItem
->boundingRect().size());
64 void Torpedo::launch()
66 launchAnimation
= new QPropertyAnimation(this, "pos");
67 AnimationManager::self()->registerAnimation(launchAnimation
);
68 launchAnimation
->setEndValue(QPointF(x(),qobject_cast
<GraphicsScene
*>(scene())->sealLevel() - 15));
69 launchAnimation
->setEasingCurve(QEasingCurve::InQuad
);
70 launchAnimation
->setDuration(y()/currentSpeed
*10);
71 connect(launchAnimation
,SIGNAL(valueChanged(const QVariant
&)),this,SLOT(onAnimationLaunchValueChanged(const QVariant
&)));
73 //We setup the state machine of the torpedo
74 QStateMachine
*machine
= new QStateMachine(this);
76 //This state is when the launch animation is playing
77 QAnimationState
*launched
= new QAnimationState(machine
);
78 launched
->setAnimation(launchAnimation
);
81 QFinalState
*final
= new QFinalState(machine
);
83 machine
->setInitialState(launched
);
85 //### Add a nice animation when the torpedo is destroyed
86 launched
->addTransition(this, SIGNAL(torpedoExplosed()),final
);
88 //If the animation is finished, then we move to the final state
89 launched
->addTransition(launched
, SIGNAL(animationFinished()), final
);
91 //The machine has finished to be executed, then the boat is dead
92 connect(machine
,SIGNAL(finished()),this, SIGNAL(torpedoExecutionFinished()));
97 void Torpedo::setCurrentSpeed(int speed
)
100 qWarning("Torpedo::setCurrentSpeed : The speed is invalid");
103 currentSpeed
= speed
;
106 void Torpedo::onAnimationLaunchValueChanged(const QVariant
&)
108 foreach (QGraphicsItem
*item
, collidingItems(Qt::IntersectsItemBoundingRect
)) {
109 if (item
->type() == Boat::Type
) {
110 Boat
*b
= static_cast<Boat
*>(item
);
116 void Torpedo::destroy()
118 launchAnimation
->stop();
119 emit
torpedoExplosed();