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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 Declarative 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 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 SPRITEENGINE_H
#define SPRITEENGINE_H
#include <QObject>
#include <QVector>
#include <QTimer>
#include <QTime>
#include <QList>
#include <QDeclarativeListProperty>
#include <QImage>
#include <QPair>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Declarative)
class QSGSprite;
class QSGSpriteEngine : public QObject
{
Q_OBJECT
//TODO: Optimize single sprite case
Q_PROPERTY(QDeclarativeListProperty<QSGSprite> sprites READ sprites)
Q_PROPERTY(QString globalGoal READ globalGoal WRITE setGlobalGoal NOTIFY globalGoalChanged)
public:
explicit QSGSpriteEngine(QObject *parent = 0);
QSGSpriteEngine(QList<QSGSprite*> sprites, QObject *parent=0);
~QSGSpriteEngine();
QDeclarativeListProperty<QSGSprite> sprites()
{
return QDeclarativeListProperty<QSGSprite>(this, m_states);
}
QString globalGoal() const
{
return m_globalGoal;
}
int count() const {return m_sprites.count();}
void setCount(int c);
int spriteState(int sprite=0);// {return m_sprites[sprite];}
int spriteStart(int sprite=0);// {return m_startTimes[sprite];}
int spriteFrames(int sprite=0);
int spriteDuration(int sprite=0);
int spriteCount();//Like state count, but for the image states
int maxFrames();
void setGoal(int state, int sprite=0, bool jump=false);
QImage assembledImage();
void startSprite(int index=0, int state=0);
void stopSprite(int index=0);
private://Nothing outside should use this?
friend class QSGSpriteGoalAffector;//XXX: Fix interface
int stateCount() {return m_states.count();}
int stateIndex(QSGSprite* s){return m_states.indexOf(s);}//TODO: Does this need to be hidden?
QSGSprite* state(int idx){return m_states[idx];}//Used by spritegoal affector
signals:
void globalGoalChanged(QString arg);
void stateChanged(int idx);
public slots:
void setGlobalGoal(QString arg)
{
if (m_globalGoal != arg) {
m_globalGoal = arg;
emit globalGoalChanged(arg);
}
}
uint updateSprites(uint time);
private:
friend class QSGParticleSystem;
void restartSprite(int sprite);
void addToUpdateList(uint t, int idx);
int goalSeek(int curState, int spriteIdx, int dist=-1);
QList<QSGSprite*> m_states;
QVector<int> m_sprites;//int is the index in m_states of the current state
QVector<int> m_goals;
QVector<int> m_startTimes;
QList<QPair<uint, QList<int> > > m_stateUpdates;//### This could be done faster - priority queue?
QTime m_advanceTime;
uint m_timeOffset;
QString m_globalGoal;
int m_maxFrames;
int m_imageStateCount;
};
//Common use is to have your own list property which is transparently an engine
inline void spriteAppend(QDeclarativeListProperty<QSGSprite> *p, QSGSprite* s)
{
reinterpret_cast<QList<QSGSprite *> *>(p->data)->append(s);
p->object->metaObject()->invokeMethod(p->object, "createEngine");
}
inline QSGSprite* spriteAt(QDeclarativeListProperty<QSGSprite> *p, int idx)
{
return reinterpret_cast<QList<QSGSprite *> *>(p->data)->at(idx);
}
inline void spriteClear(QDeclarativeListProperty<QSGSprite> *p)
{
reinterpret_cast<QList<QSGSprite *> *>(p->data)->clear();
p->object->metaObject()->invokeMethod(p->object, "createEngine");
}
inline int spriteCount(QDeclarativeListProperty<QSGSprite> *p)
{
return reinterpret_cast<QList<QSGSprite *> *>(p->data)->count();
}
QT_END_NAMESPACE
QT_END_HEADER
#endif // SPRITEENGINE_H
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