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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** 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 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.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef BOAT_P_H
#define BOAT_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
//Own
#include "bomb.h"
#include "graphicsscene.h"
// Qt
#include <QtGui/QKeyEventTransition>
static const int MAX_BOMB = 5;
//These transtion test if we have to stop the boat (i.e current speed is 1)
class KeyStopTransition : public QKeyEventTransition
{
public:
KeyStopTransition(Boat *b, QEvent::Type t, int k)
: QKeyEventTransition(b, t, k), boat(b), key(k)
{
}
protected:
virtual bool eventTest(QEvent *event)
{
if (!QKeyEventTransition::eventTest(event))
return false;
return (boat->currentSpeed() == 1);
}
private:
Boat * boat;
int key;
};
//These transtion test if we have to move the boat (i.e current speed was 0 or another value)
class KeyMoveTransition : public QKeyEventTransition
{
public:
KeyMoveTransition(Boat *b, QEvent::Type t, int k)
: QKeyEventTransition(b, t, k), boat(b), key(k)
{
}
protected:
virtual bool eventTest(QEvent *event)
{
if (!QKeyEventTransition::eventTest(event))
return false;
return (boat->currentSpeed() >= 0);
}
void onTransition(QEvent *)
{
//We decrease the speed if needed
if (key == Qt::Key_Left && boat->currentDirection() == Boat::Right)
boat->setCurrentSpeed(boat->currentSpeed() - 1);
else if (key == Qt::Key_Right && boat->currentDirection() == Boat::Left)
boat->setCurrentSpeed(boat->currentSpeed() - 1);
else if (boat->currentSpeed() < 3)
boat->setCurrentSpeed(boat->currentSpeed() + 1);
boat->updateBoatMovement();
}
private:
Boat * boat;
int key;
};
//This transition trigger the bombs launch
class KeyLaunchTransition : public QKeyEventTransition
{
public:
KeyLaunchTransition(Boat *boat, QEvent::Type type, int key)
: QKeyEventTransition(boat, type, key), boat(boat), key(key)
{
}
protected:
virtual bool eventTest(QEvent *event)
{
if (!QKeyEventTransition::eventTest(event))
return false;
//We have enough bomb?
return (boat->bombsLaunched() < MAX_BOMB);
}
private:
Boat * boat;
int key;
};
//This state is describing when the boat is moving right
class MoveStateRight : public QState
{
public:
MoveStateRight(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)
{
}
protected:
void onEntry(QEvent *)
{
boat->setCurrentDirection(Boat::Right);
boat->updateBoatMovement();
}
private:
Boat * boat;
};
//This state is describing when the boat is moving left
class MoveStateLeft : public QState
{
public:
MoveStateLeft(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)
{
}
protected:
void onEntry(QEvent *)
{
boat->setCurrentDirection(Boat::Left);
boat->updateBoatMovement();
}
private:
Boat * boat;
};
//This state is describing when the boat is in a stand by position
class StopState : public QState
{
public:
StopState(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)
{
}
protected:
void onEntry(QEvent *)
{
boat->setCurrentSpeed(0);
boat->setCurrentDirection(Boat::None);
boat->updateBoatMovement();
}
private:
Boat * boat;
};
//This state is describing the launch of the torpedo on the right
class LaunchStateRight : public QState
{
public:
LaunchStateRight(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)
{
}
protected:
void onEntry(QEvent *)
{
Bomb *b = new Bomb();
b->setPos(boat->x()+boat->size().width(),boat->y());
GraphicsScene *scene = static_cast<GraphicsScene *>(boat->scene());
scene->addItem(b);
b->launch(Bomb::Right);
boat->setBombsLaunched(boat->bombsLaunched() + 1);
}
private:
Boat * boat;
};
//This state is describing the launch of the torpedo on the left
class LaunchStateLeft : public QState
{
public:
LaunchStateLeft(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)
{
}
protected:
void onEntry(QEvent *)
{
Bomb *b = new Bomb();
b->setPos(boat->x() - b->size().width(), boat->y());
GraphicsScene *scene = static_cast<GraphicsScene *>(boat->scene());
scene->addItem(b);
b->launch(Bomb::Left);
boat->setBombsLaunched(boat->bombsLaunched() + 1);
}
private:
Boat * boat;
};
#endif // BOAT_P_H
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