1 files changed, 101 insertions, 0 deletions
diff --git a/examples/statemachine/tankgame/rocketitem.cpp b/examples/statemachine/tankgame/rocketitem.cpp
new file mode 100644
index 0000000..3ace8e8
--- /dev/null
+++ b/examples/statemachine/tankgame/rocketitem.cpp
@@ -0,0 +1,101 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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;
+    }
+}