/****************************************************************************
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** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
** Contact: http://www.qt-project.org/legal
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** This file is part of the Qt3D module of the Qt Toolkit.
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** GNU Lesser General Public License Usage
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****************************************************************************/

#ifndef QT3D_LOGIC_LOGICEXECUTOR_P_H
#define QT3D_LOGIC_LOGICEXECUTOR_P_H

#include <QtCore/qobject.h>
#include <QtCore/qcoreevent.h>
#include <Qt3DCore/qnodeid.h>

QT_BEGIN_NAMESPACE

class QSemaphore;

namespace Qt3D {

class QScene;

namespace Logic {

class FrameUpdateEvent : public QEvent
{
public:
    FrameUpdateEvent()
        : QEvent(QEvent::User)
    {}
};

class LogicExecutor : public QObject
{
    Q_OBJECT
public:
    explicit LogicExecutor(QObject *parent = 0);

    void setScene(QScene *scene) { m_scene = scene; }
    void setSemephore(QSemaphore *semaphore) { m_semaphore = semaphore; }
    void clearQueueAndProceed();

public Q_SLOTS:
    void enqueueLogicFrameUpdates(const QVector<QNodeId> &nodeIds);

protected:
    bool event(QEvent *e);
    void processLogicFrameUpdates();

private:
    QVector<QNodeId> m_nodeIds;
    QScene *m_scene;
    QSemaphore *m_semaphore;
};

} // Logic

} // Qt3D

QT_END_NAMESPACE

#endif // QT3D_LOGIC_LOGICEXECUTOR_P_H
