Remove tank game example

After discussions with product management, it was considered best that
this example be removed until it can be improved. There are some bugs
an irregularities that should be cleaned up, and the theme should be
made less violent.

Reviewed-by: Volker Hilsheimer

13 files changed, 0 insertions, 1485 deletions

diff --git a/examples/statemachine/tankgame/gameitem.cpp b/examples/statemachine/tankgame/gameitem.cpp
deleted file mode 100644
index 94affb4..0000000
--- a/examples/statemachine/tankgame/gameitem.cpp
+++ /dev/null
@@ -1,129 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the examples 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 http://www.qtsoftware.com/contact.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "gameitem.h"
-
-#include <QGraphicsScene>
-#include <QDebug>
-
-GameItem::GameItem(QObject *parent) : QObject(parent)
-{
-}
-
-QPointF GameItem::tryMove(const QPointF &requestedPosition, QLineF *collidedLine, 
-                          QGraphicsItem **collidedItem) const
-{
-    QLineF movementPath(pos(), requestedPosition);    
-
-    qreal cannonLength = 0.0;
-    {
-        QPointF p1 = boundingRect().center();
-        QPointF p2 = QPointF(boundingRect().right() + 10.0, p1.y());
-
-        cannonLength = QLineF(mapToScene(p1), mapToScene(p2)).length();
-    }
-
-    movementPath.setLength(movementPath.length() + cannonLength);
-
-    QRectF boundingRectPath(QPointF(qMin(movementPath.x1(), movementPath.x2()), qMin(movementPath.y1(), movementPath.y2())),
-                            QPointF(qMax(movementPath.x1(), movementPath.x2()), qMax(movementPath.y1(), movementPath.y2())));
-
-    QList<QGraphicsItem *> itemsInRect = scene()->items(boundingRectPath, Qt::IntersectsItemBoundingRect);
-
-    QPointF nextPoint = requestedPosition;
-    QRectF sceneRect = scene()->sceneRect();
-
-    foreach (QGraphicsItem *item, itemsInRect) {
-        if (item == static_cast<const QGraphicsItem *>(this))
-            continue; 
-
-        QPolygonF mappedBoundingRect = item->mapToScene(item->boundingRect());
-        for (int i=0; i<mappedBoundingRect.size(); ++i) {
-            QPointF p1 = mappedBoundingRect.at(i == 0 ? mappedBoundingRect.size()-1 : i-1);
-            QPointF p2 = mappedBoundingRect.at(i);
-
-            QLineF rectLine(p1, p2);
-            QPointF intersectionPoint;
-            QLineF::IntersectType intersectType = movementPath.intersect(rectLine, &intersectionPoint);
-
-            if (intersectType == QLineF::BoundedIntersection) {
-                movementPath.setP2(intersectionPoint);
-                movementPath.setLength(movementPath.length() - cannonLength);
-                nextPoint = movementPath.p2();
-
-                if (collidedLine != 0)
-                    *collidedLine = rectLine;
-
-                if (collidedItem != 0)
-                    *collidedItem = item;
-            }
-        }
-    }
-
-
-    // Don't go outside of map
-    if (nextPoint.x() < sceneRect.left()) {
-        nextPoint.rx() = sceneRect.left();
-        if (collidedLine != 0)
-            *collidedLine = QLineF(scene()->sceneRect().topLeft(), scene()->sceneRect().bottomLeft());
-    }
-    
-    if (nextPoint.x() > sceneRect.right()) {
-        nextPoint.rx() = sceneRect.right();
-        if (collidedLine != 0)
-            *collidedLine = QLineF(scene()->sceneRect().topRight(), scene()->sceneRect().bottomRight());        
-    }
-    
-    if (nextPoint.y() < sceneRect.top()) {
-        nextPoint.ry() = sceneRect.top();
-        if (collidedLine != 0)
-            *collidedLine = QLineF(scene()->sceneRect().topLeft(), scene()->sceneRect().topRight());
-    }
-    
-    if (nextPoint.y() > sceneRect.bottom()) {
-        nextPoint.ry() = sceneRect.bottom();
-        if (collidedLine != 0)
-            *collidedLine = QLineF(scene()->sceneRect().bottomLeft(), scene()->sceneRect().bottomRight());
-    }
-
-    return nextPoint;
-}
-
diff --git a/examples/statemachine/tankgame/gameitem.h b/examples/statemachine/tankgame/gameitem.h
deleted file mode 100644
index af012bb..0000000
--- a/examples/statemachine/tankgame/gameitem.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the examples 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 http://www.qtsoftware.com/contact.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef GAMEITEM_H
-#define GAMEITEM_H
-
-#include <QGraphicsItem>
-
-QT_BEGIN_NAMESPACE
-class QLineF;
-QT_END_NAMESPACE
-class GameItem: public QObject, public QGraphicsItem
-{
-    Q_OBJECT
-public:
-    enum { Type = UserType + 1 };
-    int type() const { return Type; }
-
-    GameItem(QObject *parent = 0);
-
-    virtual void idle(qreal elapsed) = 0;
-
-protected:
-    QPointF tryMove(const QPointF &requestedPosition, QLineF *collidedLine = 0, 
-        QGraphicsItem **collidedItem = 0) const;
-};
-
-#endif
diff --git a/examples/statemachine/tankgame/gameovertransition.cpp b/examples/statemachine/tankgame/gameovertransition.cpp
deleted file mode 100644
index 634fbce..0000000
--- a/examples/statemachine/tankgame/gameovertransition.cpp
+++ /dev/null
@@ -1,80 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the examples 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 http://www.qtsoftware.com/contact.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "gameovertransition.h"
-#include "tankitem.h"
-
-#include <QSignalEvent>
-#include <QSignalMapper>
-
-GameOverTransition::GameOverTransition(QAbstractState *targetState)
-    : QSignalTransition(new QSignalMapper(), SIGNAL(mapped(QObject*)))
-{
-    setTargetState(targetState);
-
-    QSignalMapper *mapper = qobject_cast<QSignalMapper *>(senderObject());
-    mapper->setParent(this);
-}
-
-void GameOverTransition::addTankItem(TankItem *tankItem)
-{
-    m_tankItems.append(tankItem);
-
-    QSignalMapper *mapper = qobject_cast<QSignalMapper *>(senderObject());
-    mapper->setMapping(tankItem, tankItem);
-    connect(tankItem, SIGNAL(aboutToBeDestroyed()), mapper, SLOT(map()));
-}
-
-bool GameOverTransition::eventTest(QEvent *e)
-{
-    bool ret = QSignalTransition::eventTest(e);
-
-    if (ret) {
-        QSignalEvent *signalEvent = static_cast<QSignalEvent *>(e);
-        QObject *sender = qvariant_cast<QObject *>(signalEvent->arguments().at(0));
-        TankItem *tankItem = qobject_cast<TankItem *>(sender);
-        m_tankItems.removeAll(tankItem);
-
-        return m_tankItems.size() <= 1;
-    } else {
-        return false;
-    }
-}
diff --git a/examples/statemachine/tankgame/gameovertransition.h b/examples/statemachine/tankgame/gameovertransition.h
deleted file mode 100644
index e918359..0000000
--- a/examples/statemachine/tankgame/gameovertransition.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the examples 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 http://www.qtsoftware.com/contact.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef GAMEOVERTRANSITION_H
-#define GAMEOVERTRANSITION_H
-
-#include <QSignalTransition>
-
-class TankItem;
-class GameOverTransition: public QSignalTransition
-{
-    Q_OBJECT
-public:
-    GameOverTransition(QAbstractState *targetState);
-
-    void addTankItem(TankItem *tankItem);
-
-protected:
-    bool eventTest(QEvent *event);
-
-private:
-    QList<TankItem *> m_tankItems;
-};
-
-#endif
diff --git a/examples/statemachine/tankgame/main.cpp b/examples/statemachine/tankgame/main.cpp
deleted file mode 100644
index 85e2747..0000000
--- a/examples/statemachine/tankgame/main.cpp
+++ /dev/null
@@ -1,53 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the examples 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 http://www.qtsoftware.com/contact.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include <QApplication>
-#include "mainwindow.h"
-
-int main(int argc, char **argv)
-{
-    QApplication app(argc, argv);
-
-    MainWindow mainWindow;
-    mainWindow.show();
-
-    return app.exec();
-}
diff --git a/examples/statemachine/tankgame/mainwindow.cpp b/examples/statemachine/tankgame/mainwindow.cpp
deleted file mode 100644
index 596cdfe..0000000
--- a/examples/statemachine/tankgame/mainwindow.cpp
+++ /dev/null
@@ -1,342 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the examples 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 http://www.qtsoftware.com/contact.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "mainwindow.h"
-#include "tankitem.h"
-#include "rocketitem.h"
-#include "plugin.h"
-#include "gameovertransition.h"
-
-#include <QStateMachine>
-#include <QGraphicsView>
-#include <QAction>
-#include <QMenuBar>
-#include <QState>
-#include <QHistoryState>
-#include <QTimer>
-#include <QFileDialog>
-#include <QPluginLoader>
-#include <QApplication>
-#include <QInputDialog>
-#include <QMessageBox>
-
-MainWindow::MainWindow(QWidget *parent)
-    : QMainWindow(parent), m_scene(0), m_machine(0), m_runningState(0), m_started(false)
-{
-    init();
-}
-
-MainWindow::~MainWindow()
-{
-}
-
-void MainWindow::addWall(const QRectF &wall)
-{
-    QGraphicsRectItem *item = new QGraphicsRectItem;
-    item->setRect(wall);
-    item->setBrush(Qt::darkGreen);
-    item->setPen(QPen(Qt::black, 0));
-
-    m_scene->addItem(item);
-}
-
-void MainWindow::init()
-{
-    setWindowTitle("Pluggable Tank Game");
-
-    QGraphicsView *view = new QGraphicsView(this);
-    view->setRenderHints(QPainter::Antialiasing);
-    setCentralWidget(view);
-
-    m_scene = new QGraphicsScene(this);
-    view->setScene(m_scene);
-
-    QRectF sceneRect = QRectF(-200.0, -200.0, 400.0, 400.0);
-    m_scene->setSceneRect(sceneRect);
-
-    {
-        TankItem *item = new TankItem(this);
-
-        item->setPos(m_scene->sceneRect().topLeft() + QPointF(30.0, 30.0));
-        item->setDirection(45.0);
-        item->setColor(Qt::red);
-
-        m_spawns.append(item);
-    }
-
-    {
-        TankItem *item = new TankItem(this);
-
-        item->setPos(m_scene->sceneRect().topRight() + QPointF(-30.0, 30.0));
-        item->setDirection(135.0);
-        item->setColor(Qt::green);
-
-        m_spawns.append(item);
-    }
-
-    {
-        TankItem *item = new TankItem(this);
-
-        item->setPos(m_scene->sceneRect().bottomRight() + QPointF(-30.0, -30.0));
-        item->setDirection(225.0);
-        item->setColor(Qt::blue);
-
-        m_spawns.append(item);
-    }
-
-    {
-        TankItem *item = new TankItem(this);
-
-        item->setPos(m_scene->sceneRect().bottomLeft() + QPointF(30.0, -30.0));
-        item->setDirection(315.0);
-        item->setColor(Qt::yellow);
-
-        m_spawns.append(item);
-    }
-
-    QPointF centerOfMap = sceneRect.center();
-
-    addWall(QRectF(centerOfMap + QPointF(-50.0, -60.0), centerOfMap + QPointF(50.0, -50.0)));
-    addWall(QRectF(centerOfMap - QPointF(-50.0, -60.0), centerOfMap - QPointF(50.0, -50.0)));
-    addWall(QRectF(centerOfMap + QPointF(-50.0, -50.0), centerOfMap + QPointF(-40.0, 50.0)));
-    addWall(QRectF(centerOfMap - QPointF(-50.0, -50.0), centerOfMap - QPointF(-40.0, 50.0)));
-
-    addWall(QRectF(sceneRect.topLeft() + QPointF(sceneRect.width() / 2.0 - 5.0, -10.0),
-                   sceneRect.topLeft() + QPointF(sceneRect.width() / 2.0 + 5.0, 100.0)));
-    addWall(QRectF(sceneRect.bottomLeft() + QPointF(sceneRect.width() / 2.0 - 5.0, 10.0),
-                   sceneRect.bottomLeft() + QPointF(sceneRect.width() / 2.0 + 5.0, -100.0)));
-    addWall(QRectF(sceneRect.topLeft() + QPointF(-10.0, sceneRect.height() / 2.0 - 5.0),
-                   sceneRect.topLeft() + QPointF(100.0, sceneRect.height() / 2.0 + 5.0)));
-    addWall(QRectF(sceneRect.topRight() + QPointF(10.0, sceneRect.height() / 2.0 - 5.0),
-                   sceneRect.topRight() + QPointF(-100.0, sceneRect.height() / 2.0 + 5.0)));
-
-
-    QAction *addTankAction = menuBar()->addAction("&Add tank");
-    QAction *runGameAction = menuBar()->addAction("&Run game");
-    runGameAction->setObjectName("runGameAction");
-    QAction *stopGameAction = menuBar()->addAction("&Stop game");
-    menuBar()->addSeparator();
-    QAction *quitAction = menuBar()->addAction("&Quit");
-
-    connect(addTankAction, SIGNAL(triggered()), this, SLOT(addTank()));
-    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
-
-    m_machine = new QStateMachine(this);
-    QState *stoppedState = new QState(m_machine);
-    stoppedState->setObjectName("stoppedState");
-    stoppedState->assignProperty(runGameAction, "enabled", true);
-    stoppedState->assignProperty(stopGameAction, "enabled", false);
-    stoppedState->assignProperty(this, "started", false);
-    m_machine->setInitialState(stoppedState);
-
-//! [5]
-    QState *spawnsAvailable = new QState(stoppedState);
-    spawnsAvailable->assignProperty(addTankAction, "enabled", true);
-
-    QState *noSpawnsAvailable = new QState(stoppedState);
-    noSpawnsAvailable->assignProperty(addTankAction, "enabled", false);
-//! [5]
-    spawnsAvailable->setObjectName("spawnsAvailable");
-    noSpawnsAvailable->setObjectName("noSpawnsAvailable");
-
-    spawnsAvailable->addTransition(this, SIGNAL(mapFull()), noSpawnsAvailable);
-
-//! [3]
-    QHistoryState *hs = new QHistoryState(stoppedState);
-    hs->setDefaultState(spawnsAvailable);
-//! [3]
-    hs->setObjectName("hs");
-
-    stoppedState->setInitialState(hs);
-
-//! [0]
-    m_runningState = new QState(QState::ParallelStates, m_machine);
-//! [0]
-    m_runningState->setObjectName("runningState");
-    m_runningState->assignProperty(addTankAction, "enabled", false);
-    m_runningState->assignProperty(runGameAction, "enabled", false);
-    m_runningState->assignProperty(stopGameAction, "enabled", true);
-
-    QState *gameOverState = new QState(m_machine);
-    gameOverState->setObjectName("gameOverState");
-    gameOverState->assignProperty(stopGameAction, "enabled", false);
-    connect(gameOverState, SIGNAL(entered()), this, SLOT(gameOver()));
-
-    stoppedState->addTransition(runGameAction, SIGNAL(triggered()), m_runningState);
-    m_runningState->addTransition(stopGameAction, SIGNAL(triggered()), stoppedState);
-
-    m_gameOverTransition = new GameOverTransition(gameOverState);
-    m_runningState->addTransition(m_gameOverTransition);
-
-    QTimer *timer = new QTimer(this);
-    timer->setInterval(100);
-    connect(timer, SIGNAL(timeout()), this, SLOT(runStep()));
-    connect(m_runningState, SIGNAL(entered()), timer, SLOT(start()));
-    connect(m_runningState, SIGNAL(exited()), timer, SLOT(stop()));
-
-    m_machine->start();
-    m_time.start();
-}
-
-void MainWindow::runStep()
-{
-    if (!m_started) {
-        m_time.restart();
-        m_started = true;
-    } else {
-        int elapsed = m_time.elapsed();
-        if (elapsed > 0) {
-            m_time.restart();
-            qreal elapsedSecs = elapsed / 1000.0;
-            QList<QGraphicsItem *> items = m_scene->items();
-            foreach (QGraphicsItem *item, items) {
-                if (GameItem *gameItem = qgraphicsitem_cast<GameItem *>(item))
-                    gameItem->idle(elapsedSecs);
-            }
-        }
-    }
-}
-
-void MainWindow::gameOver()
-{
-    QList<QGraphicsItem *> items = m_scene->items();
-
-    TankItem *lastTankStanding = 0;
-    foreach (QGraphicsItem *item, items) {
-        if (GameItem *gameItem = qgraphicsitem_cast<GameItem *>(item)) {
-            if ((lastTankStanding = qobject_cast<TankItem *>(gameItem)) != 0)
-                break;
-        }
-    }
-
-    QMessageBox::information(this, "Game over!",
-        QString::fromLatin1("The tank played by '%1' has won!").arg(lastTankStanding->objectName()));
-}
-
-void MainWindow::addRocket()
-{
-    TankItem *tankItem = qobject_cast<TankItem *>(sender());
-    if (tankItem != 0) {
-        RocketItem *rocketItem = new RocketItem;
-
-        QPointF s = tankItem->mapToScene(QPointF(tankItem->boundingRect().right() + 10.0,
-                                                 tankItem->boundingRect().center().y()));
-        rocketItem->setPos(s);
-        rocketItem->setDirection(tankItem->direction());
-        m_scene->addItem(rocketItem);
-    }
-}
-
-void MainWindow::addTank()
-{
-    Q_ASSERT(!m_spawns.isEmpty());
-
-    QDir pluginsDir(qApp->applicationDirPath());
-#if defined(Q_OS_WIN)
-    if (pluginsDir.dirName().toLower() == "debug" || pluginsDir.dirName().toLower() == "release")
-        pluginsDir.cdUp();
-#elif defined(Q_OS_MAC)
-    if (pluginsDir.dirName() == "MacOS") {
-        pluginsDir.cdUp();
-        pluginsDir.cdUp();
-        pluginsDir.cdUp();
-    }
-#endif
-
-    pluginsDir.cd("plugins");
-
-    QStringList itemNames;
-    QList<Plugin *> items;
-    foreach (QString fileName, pluginsDir.entryList(QDir::Files)) {
-        QPluginLoader loader(pluginsDir.absoluteFilePath(fileName));
-        QObject *possiblePlugin = loader.instance();
-        if (Plugin *plugin = qobject_cast<Plugin *>(possiblePlugin)) {
-            QString objectName = possiblePlugin->objectName();
-            if (objectName.isEmpty())
-                objectName = fileName;
-
-            itemNames.append(objectName);
-            items.append(plugin);
-        }
-    }
-
-    if (items.isEmpty()) {
-        QMessageBox::information(this, "No tank types found", "Please build the errorstateplugins directory");
-        return;
-    }
-
-    bool ok;
-//! [1]
-    QString selectedName = QInputDialog::getItem(this, "Select a tank type", "Tank types",
-        itemNames, 0, false, &ok);
-//! [1]
-
-    if (ok && !selectedName.isEmpty()) {
-        int idx = itemNames.indexOf(selectedName);
-        if (Plugin *plugin = idx >= 0 ? items.at(idx) : 0) {
-            TankItem *tankItem = m_spawns.takeLast();
-            tankItem->setObjectName(selectedName);
-            tankItem->setToolTip(selectedName);
-            m_scene->addItem(tankItem);
-            connect(tankItem, SIGNAL(cannonFired()), this, SLOT(addRocket()));
-            if (m_spawns.isEmpty())
-                emit mapFull();
-
-            m_gameOverTransition->addTankItem(tankItem);
-
-            QState *region = new QState(m_runningState);
-            region->setObjectName(QString::fromLatin1("region%1").arg(m_spawns.size()));
-//! [2]
-            QState *pluginState = plugin->create(region, tankItem);
-//! [2]
-            region->setInitialState(pluginState);
-
-            // If the plugin has an error it is disabled
-//! [4]
-            QState *errorState = new QState(region);
-            errorState->setObjectName(QString::fromLatin1("errorState%1").arg(m_spawns.size()));
-            errorState->assignProperty(tankItem, "enabled", false);
-            pluginState->setErrorState(errorState);
-//! [4]
-        }
-    }
-}
-
diff --git a/examples/statemachine/tankgame/mainwindow.h b/examples/statemachine/tankgame/mainwindow.h
deleted file mode 100644
index d42b7ac..0000000
--- a/examples/statemachine/tankgame/mainwindow.h
+++ /dev/null
@@ -1,93 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the examples 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 http://www.qtsoftware.com/contact.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef MAINWINDOW_H
-#define MAINWINDOW_H
-
-#include <QMainWindow>
-#include <QTime>
-
-QT_BEGIN_NAMESPACE
-class QGraphicsScene;
-class QStateMachine;
-class QState;
-QT_END_NAMESPACE
-class GameOverTransition;
-class TankItem;
-
-class MainWindow: public QMainWindow
-{
-    Q_OBJECT
-    Q_PROPERTY(bool started READ started WRITE setStarted)
-public:
-    MainWindow(QWidget *parent = 0);
-    ~MainWindow();
-
-    void setStarted(bool b) { m_started = b; }
-    bool started() const { return m_started; }
-
-public slots:
-    void addTank();
-    void addRocket();
-    void runStep();
-    void gameOver();
-
-signals:
-    void mapFull();
-
-private:
-    void init();
-    void addWall(const QRectF &wall);
-
-    QGraphicsScene *m_scene;
-
-    QStateMachine *m_machine;
-    QState *m_runningState;
-    GameOverTransition *m_gameOverTransition;
-
-    QList<TankItem *> m_spawns;
-    QTime m_time;
-
-    bool m_started : 1;
-};
-
-#endif
-
diff --git a/examples/statemachine/tankgame/plugin.h b/examples/statemachine/tankgame/plugin.h
deleted file mode 100644
index 97e4640..0000000
--- a/examples/statemachine/tankgame/plugin.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the examples 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 http://www.qtsoftware.com/contact.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef PLUGIN_H
-#define PLUGIN_H
-
-#include <QtPlugin>
-
-QT_BEGIN_NAMESPACE
-class QState;
-QT_END_NAMESPACE
-class Plugin
-{
-public:
-    virtual ~Plugin() {}
-
-    virtual QState *create(QState *parentState, QObject *tank) = 0;
-};
-
-QT_BEGIN_NAMESPACE
-Q_DECLARE_INTERFACE(Plugin, "TankPlugin")
-QT_END_NAMESPACE
-
-#endif
diff --git a/examples/statemachine/tankgame/rocketitem.cpp b/examples/statemachine/tankgame/rocketitem.cpp
deleted file mode 100644
index d286e5d..0000000
--- a/examples/statemachine/tankgame/rocketitem.cpp
+++ /dev/null
@@ -1,101 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the examples 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 http://www.qtsoftware.com/contact.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "rocketitem.h"
-#include "tankitem.h"
-
-#include <QPainter>
-#include <QGraphicsScene>
-
-#include <math.h>
-
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#endif
-
-RocketItem::RocketItem(QObject *parent)
-    : GameItem(parent), m_direction(0.0), m_distance(300.0)
-{
-}
-
-QRectF RocketItem::boundingRect() const
-{
-    return QRectF(-1.0, -1.0, 2.0, 2.0);
-}
-
-void RocketItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
-{
-    painter->setBrush(Qt::black);
-    painter->drawEllipse(boundingRect());
-}
-
-void RocketItem::idle(qreal elapsed)
-{
-    qreal dist = elapsed * speed();
-
-    m_distance -= dist;
-    if (m_distance < 0.0) {
-        scene()->removeItem(this);
-        delete this;
-        return;
-    }
-
-    qreal a = m_direction * M_PI / 180.0;
-
-    qreal yd = dist * sin(a);
-    qreal xd = dist * sin(M_PI / 2.0 - a);
-
-    QPointF requestedPosition = pos() + QPointF(xd, yd);
-    QGraphicsItem *collidedItem = 0;
-    QPointF nextPosition = tryMove(requestedPosition, 0, &collidedItem);
-    if (requestedPosition == nextPosition) {
-        setPos(nextPosition);
-    } else {
-        if (GameItem *gameItem = qgraphicsitem_cast<GameItem *>(collidedItem)) {
-            TankItem *tankItem = qobject_cast<TankItem *>(gameItem);
-            if (tankItem != 0)
-                tankItem->hitByRocket();
-        }
-
-        scene()->removeItem(this);
-        delete this;
-    }
-}
diff --git a/examples/statemachine/tankgame/rocketitem.h b/examples/statemachine/tankgame/rocketitem.h
deleted file mode 100644
index a485d03..0000000
--- a/examples/statemachine/tankgame/rocketitem.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the examples 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 http://www.qtsoftware.com/contact.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef ROCKETITEM_H
-#define ROCKETITEM_H
-
-#include "gameitem.h"
-
-class RocketItem: public GameItem
-{
-    Q_OBJECT
-public:
-    RocketItem(QObject *parent = 0);
-
-    virtual void idle(qreal elapsed);
-    qreal speed() const { return 100.0; }
-    void setDirection(qreal direction) { m_direction = direction; }
-
-protected:
-    virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
-    QRectF boundingRect() const;
-
-private:
-    qreal m_direction;
-    qreal m_distance;
-};
-
-#endif
diff --git a/examples/statemachine/tankgame/tankgame.pro b/examples/statemachine/tankgame/tankgame.pro
deleted file mode 100644
index 59415be..0000000
--- a/examples/statemachine/tankgame/tankgame.pro
+++ /dev/null
@@ -1,19 +0,0 @@
-HEADERS += mainwindow.h \
-           plugin.h \
-           tankitem.h \
-           rocketitem.h \
-           gameitem.h \
-           gameovertransition.h
-SOURCES += main.cpp \
-           mainwindow.cpp \
-           tankitem.cpp \
-           rocketitem.cpp \
-           gameitem.cpp \
-           gameovertransition.cpp
-CONFIG += console
-
-# install
-target.path = $$[QT_INSTALL_EXAMPLES]/statemachine/tankgame
-sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS tankgame.pro
-sources.path = $$[QT_INSTALL_EXAMPLES]/statemachine/tankgame
-INSTALLS += target sources
diff --git a/examples/statemachine/tankgame/tankitem.cpp b/examples/statemachine/tankgame/tankitem.cpp
deleted file mode 100644
index 192b272..0000000
--- a/examples/statemachine/tankgame/tankitem.cpp
+++ /dev/null
@@ -1,302 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the examples 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 http://www.qtsoftware.com/contact.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "tankitem.h"
-
-#include <QPainter>
-#include <QGraphicsScene>
-#include <QDebug>
-
-#include <math.h>
-
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#endif
-
-class Action
-{
-public:
-    Action(TankItem *item) : m_item(item)
-    {
-    }
-
-    TankItem *item() const { return m_item; }
-    void setItem(TankItem *item) { m_item = item; }
-
-    virtual bool apply(qreal timeDelta) = 0;
-
-private:
-    TankItem *m_item;
-};
-
-class MoveAction: public Action
-{
-public:
-    MoveAction(TankItem *item, qreal distance)
-        : Action(item), m_distance(distance)
-    {
-        m_reverse = m_distance < 0.0;
-    }
-
-    bool apply(qreal timeDelta)
-    {
-        qreal dist = timeDelta * item()->speed() * (m_reverse ? -1.0 : 1.0);
-
-        bool done = false;
-        if (qAbs(m_distance) < qAbs(dist)) {
-            done = true;
-            dist = m_distance;
-        }
-        m_distance -= dist;
-
-        qreal a = item()->direction() * M_PI / 180.0;
-
-        qreal yd = dist * sin(a);
-        qreal xd = dist * sin(M_PI / 2.0 - a);
-
-        item()->setPos(item()->pos() + QPointF(xd, yd));
-        return !done;
-    }
-
-private:
-    qreal m_distance;
-    bool m_reverse;
-};
-
-class TurnAction: public Action
-{
-public:
-    TurnAction(TankItem *item, qreal distance)
-        : Action(item), m_distance(distance)
-    {
-        m_reverse = m_distance < 0.0;
-    }
-
-    bool apply(qreal timeDelta)
-    {
-        qreal dist = timeDelta * item()->angularSpeed() * (m_reverse ? -1.0 : 1.0);
-        bool done = false;
-        if (qAbs(m_distance) < qAbs(dist)) {
-            done = true;
-            dist = m_distance;
-        }
-        m_distance -= dist;
-
-        item()->setDirection(item()->direction() + dist);
-        return !done;
-    }
-
-private:
-    qreal m_distance;
-    bool m_reverse;
-};
-
-TankItem::TankItem(QObject *parent)
-    : GameItem(parent), m_currentAction(0), m_currentDirection(0.0), m_enabled(true)
-{
-    connect(this, SIGNAL(cannonFired()), this, SIGNAL(actionCompleted()));
-}
-
-void TankItem::idle(qreal elapsed)
-{
-    if (m_enabled) {
-        if (m_currentAction != 0) {
-            if (!m_currentAction->apply(elapsed)) {
-                setAction(0);
-                emit actionCompleted();
-            }
-
-            QGraphicsItem *item = 0;
-            qreal distance = distanceToObstacle(&item);
-            if (TankItem *tankItem = qgraphicsitem_cast<TankItem *>(item))
-                emit tankSpotted(tankItem->direction(), distance);
-        }
-    }
-}
-
-void TankItem::hitByRocket()
-{
-    emit aboutToBeDestroyed();
-    deleteLater();
-}
-
-void TankItem::setAction(Action *newAction)
-{
-    if (m_currentAction != 0)
-        delete m_currentAction;
-
-    m_currentAction = newAction;
-}
-
-void TankItem::fireCannon()
-{
-    emit cannonFired();
-}
-
-void TankItem::moveForwards(qreal length)
-{
-    setAction(new MoveAction(this, length));
-}
-
-void TankItem::moveBackwards(qreal length)
-{
-    setAction(new MoveAction(this, -length));
-}
-
-void TankItem::turn(qreal degrees)
-{
-    setAction(new TurnAction(this, degrees));
-}
-
-void TankItem::turnTo(qreal degrees)
-{
-    setAction(new TurnAction(this, degrees - direction()));
-}
-
-void TankItem::stop()
-{
-    setAction(0);
-}
-
-QVariant TankItem::itemChange(QGraphicsItem::GraphicsItemChange change, const QVariant &value)
-{
-    if (change == ItemPositionChange && scene()) {
-        QPointF requestedPosition = value.toPointF();
-        QLineF collidedLine;
-        QPointF nextPoint = tryMove(requestedPosition, &collidedLine);
-        if (nextPoint != requestedPosition)
-            emit collision(collidedLine);
-        return nextPoint;
-    } else {
-        return QGraphicsItem::itemChange(change, value);
-    }
-}
-
-
-void TankItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
-{
-    QRectF brect = boundingRect();
-
-    painter->setBrush(m_color);
-    painter->setPen(Qt::black);
-
-    // body
-    painter->drawRect(brect.adjusted(0.0, 4.0, -2.0, -4.0));
-
-    // cannon
-    QRectF cannonBase = brect.adjusted(10.0, 6.0, -12.0, -6.0);
-    painter->drawEllipse(cannonBase);
-
-    painter->drawRect(QRectF(QPointF(cannonBase.center().x(), cannonBase.center().y() - 2.0),
-                             QPointF(brect.right(), cannonBase.center().y() + 2.0)));
-
-    // left track
-    painter->setBrush(QBrush(Qt::black, Qt::VerPattern));
-    QRectF leftTrackRect = QRectF(brect.topLeft(), QPointF(brect.right() - 2.0, brect.top() + 4.0));
-    painter->fillRect(leftTrackRect, Qt::darkYellow);
-    painter->drawRect(leftTrackRect);
-
-    // right track
-    QRectF rightTrackRect = QRectF(QPointF(brect.left(), brect.bottom() - 4.0),
-                                   QPointF(brect.right() - 2.0, brect.bottom()));
-    painter->fillRect(rightTrackRect, Qt::darkYellow);
-    painter->drawRect(rightTrackRect);
-
-    if (!m_enabled) {
-        painter->setPen(QPen(Qt::red, 5));
-
-        painter->drawEllipse(brect);
-
-        QPainterPath path;
-        path.addEllipse(brect);
-        painter->setClipPath(path);
-        painter->drawLine(brect.topRight(), brect.bottomLeft());
-    }
-}
-
-QRectF TankItem::boundingRect() const
-{
-    return QRectF(-20.0, -10.0, 40.0, 20.0);
-}
-
-qreal TankItem::direction() const
-{
-    return m_currentDirection;
-}
-
-void TankItem::setDirection(qreal newDirection)
-{
-    int fullRotations = int(newDirection) / 360;
-    newDirection -= fullRotations * 360.0;
-
-    qreal diff = newDirection - m_currentDirection;
-    m_currentDirection = newDirection;
-    rotate(diff);
-}
-
-qreal TankItem::distanceToObstacle(QGraphicsItem **obstacle) const
-{
-    qreal dist = sqrt(pow(scene()->sceneRect().width(), 2) + pow(scene()->sceneRect().height(), 2));
-
-    qreal a = m_currentDirection * M_PI / 180.0;
-
-    qreal yd = dist * sin(a);
-    qreal xd = dist * sin(M_PI / 2.0 - a);
-
-    QPointF requestedPosition = pos() + QPointF(xd, yd);
-    QGraphicsItem *collidedItem = 0;
-    QPointF nextPosition = tryMove(requestedPosition, 0, &collidedItem);
-    if (collidedItem != 0) {
-        if (obstacle != 0)
-            *obstacle = collidedItem;
-
-        QPointF d = nextPosition - pos();
-        return sqrt(pow(d.x(), 2) + pow(d.y(), 2));
-    } else {
-        return 0.0;
-    }
-}
-
-qreal TankItem::distanceToObstacle() const
-{
-    return distanceToObstacle(0);
-}
-
diff --git a/examples/statemachine/tankgame/tankitem.h b/examples/statemachine/tankgame/tankitem.h
deleted file mode 100644
index a2f72de..0000000
--- a/examples/statemachine/tankgame/tankitem.h
+++ /dev/null
@@ -1,109 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the examples 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 http://www.qtsoftware.com/contact.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef TANKITEM_H
-#define TANKITEM_H
-
-#include "gameitem.h"
-
-#include <QColor>
-
-class Action;
-class TankItem: public GameItem
-{
-    Q_OBJECT
-    Q_PROPERTY(bool enabled READ enabled WRITE setEnabled)
-    Q_PROPERTY(qreal direction READ direction WRITE turnTo)
-    Q_PROPERTY(qreal distanceToObstacle READ distanceToObstacle)
-public:
-    TankItem(QObject *parent = 0);
-
-    void setColor(const QColor &color) { m_color = color; }
-    QColor color() const { return m_color; }
-
-    void idle(qreal elapsed);
-    void setDirection(qreal newDirection);
-
-    qreal speed() const { return 90.0; }
-    qreal angularSpeed() const { return 90.0; }
-
-    QRectF boundingRect() const;
-
-    void hitByRocket();
-
-    void setEnabled(bool b) { m_enabled = b; }
-    bool enabled() const { return m_enabled; }
-
-    qreal direction() const;
-    qreal distanceToObstacle() const;
-    qreal distanceToObstacle(QGraphicsItem **item) const;
-
-//! [0]
-signals:
-    void tankSpotted(qreal direction, qreal distance);
-    void collision(const QLineF &collidedLine);
-    void actionCompleted();
-    void cannonFired();
-    void aboutToBeDestroyed();
-
-public slots:
-    void moveForwards(qreal length = 10.0);
-    void moveBackwards(qreal length = 10.0);
-    void turn(qreal degrees = 30.0);
-    void turnTo(qreal degrees = 0.0);
-    void stop();
-    void fireCannon();
-//! [0]
-
-protected:
-    virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
-    QVariant itemChange(QGraphicsItem::GraphicsItemChange change, const QVariant &value);
-
-private:
-    void setAction(Action *newAction);
-
-    Action *m_currentAction;
-    qreal m_currentDirection;
-    QColor m_color;
-    bool m_enabled;
-};
-
-#endif