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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 SpriteState;
class SpriteEngine : public QObject
{
Q_OBJECT
//TODO: Optimize single sprite case
Q_PROPERTY(QDeclarativeListProperty<SpriteState> sprites READ sprites)
Q_PROPERTY(QString globalGoal READ globalGoal WRITE setGlobalGoal NOTIFY globalGoalChanged)
public:
explicit SpriteEngine(QObject *parent = 0);
SpriteEngine(QList<SpriteState*> sprites, QObject *parent=0);
~SpriteEngine();
QDeclarativeListProperty<SpriteState> sprites()
{
return QDeclarativeListProperty<SpriteState>(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 stateIndex(SpriteState* s){return m_states.indexOf(s);}
SpriteState* state(int idx){return m_states[idx];}
int stateCount() {return m_states.count();}
int maxFrames();
void setGoal(int state, int sprite=0, bool jump=false);
QImage assembledImage();
void startSprite(int index=0);
signals:
void globalGoalChanged(QString arg);
public slots:
void setGlobalGoal(QString arg)
{
if (m_globalGoal != arg) {
m_globalGoal = arg;
emit globalGoalChanged(arg);
}
}
uint updateSprites(uint time);
private:
void restartSprite(int sprite);
void addToUpdateList(uint t, int idx);
int goalSeek(int curState, int spriteIdx, int dist=-1);
QList<SpriteState*> 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
QTime m_advanceTime;
uint m_timeOffset;
QString m_globalGoal;
int m_maxFrames;
};
//Common use is to have your own list property which is transparently an engine
inline void spriteAppend(QDeclarativeListProperty<SpriteState> *p, SpriteState* s)
{
reinterpret_cast<QList<SpriteState *> *>(p->data)->append(s);
p->object->metaObject()->invokeMethod(p->object, "createEngine");
}
inline SpriteState* spriteAt(QDeclarativeListProperty<SpriteState> *p, int idx)
{
return reinterpret_cast<QList<SpriteState *> *>(p->data)->at(idx);
}
inline void spriteClear(QDeclarativeListProperty<SpriteState> *p)
{
reinterpret_cast<QList<SpriteState *> *>(p->data)->clear();
p->object->metaObject()->invokeMethod(p->object, "createEngine");
}
inline int spriteCount(QDeclarativeListProperty<SpriteState> *p)
{
return reinterpret_cast<QList<SpriteState *> *>(p->data)->count();
}
QT_END_NAMESPACE
QT_END_HEADER
#endif // SPRITEENGINE_H
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