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diff --git a/src/imports/particles/particlesystem.h b/src/imports/particles/particlesystem.h
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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 PARTICLESYSTEM_H
+#define PARTICLESYSTEM_H
+
+#include <QSGItem>
+#include <QTime>
+#include <QVector>
+#include <QHash>
+#include <QPointer>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Declarative)
+
+
+class ParticleAffector;
+class ParticleEmitter;
+class ParticleType;
+class ParticleData;
+
+
+struct GroupData{
+    int size;
+    int start;
+    int nextIdx;
+    QList<ParticleType*> types;
+};
+
+class ParticleSystem : public QSGItem
+{
+    Q_OBJECT
+    Q_PROPERTY(bool running READ isRunning WRITE setRunning NOTIFY runningChanged)
+    Q_PROPERTY(int startTime READ startTime WRITE setStartTime NOTIFY startTimeChanged)
+    Q_PROPERTY(bool overwrite READ overwrite WRITE setOverwrite NOTIFY overwriteChanged)//XXX: Should just be an implementation detail, but I can't decide which way
+
+public:
+    explicit ParticleSystem(QSGItem *parent = 0);
+
+bool isRunning() const
+{
+    return m_running;
+}
+
+int startTime() const
+{
+    return m_startTime;
+}
+
+int count(){ return m_particle_count; }
+
+signals:
+
+void systemInitialized();
+void runningChanged(bool arg);
+
+void startTimeChanged(int arg);
+
+
+void overwriteChanged(bool arg);
+
+public slots:
+void reset();
+void setRunning(bool arg);
+
+
+void setStartTime(int arg)
+{
+    m_startTime = arg;
+}
+
+void setOverwrite(bool arg)
+{
+    if (m_overwrite != arg) {
+    m_overwrite = arg;
+emit overwriteChanged(arg);
+}
+}
+
+protected:
+    void componentComplete();
+
+private slots:
+    void countChanged();
+public://but only really for related class usage. Perhaps we should all be friends?
+    void emitParticle(ParticleData* p);
+    ParticleData* newDatum(int groupId);
+    uint systemSync(ParticleType* p);
+    QTime m_timestamp;
+    QVector<ParticleData*> m_data;
+    QSet<ParticleData*> m_needsReset;
+    QHash<QString, int> m_groupIds;
+    QHash<int, GroupData*> m_groupData;//id, size, start
+    uint m_timeInt;
+    bool m_initialized;
+
+    void registerParticleType(ParticleType* p);
+    void registerParticleEmitter(ParticleEmitter* e);
+    void registerParticleAffector(ParticleAffector* a);
+    bool overwrite() const
+    {
+        return m_overwrite;
+    }
+
+    int m_particle_count;
+private:
+    void initializeSystem();
+    bool m_running;
+    QList<QPointer<ParticleEmitter> > m_emitters;
+    QList<QPointer<ParticleAffector> > m_affectors;
+    QList<QPointer<ParticleType> > m_particles;
+    QList<QPointer<ParticleType> > m_syncList;
+    int m_startTime;
+    int m_nextGroupId;
+    bool m_overwrite;
+};
+
+//TODO: Clean up all this into ParticleData
+
+struct ParticleVertex {
+    float x;
+    float y;
+    float t;
+    float lifeSpan;
+    float size;
+    float endSize;
+    float sx;
+    float sy;
+    float ax;
+    float ay;
+    //TODO: Need opacity over life control. More variable size over life?
+};
+
+class ParticleData{
+public:
+    ParticleData();
+
+    ParticleVertex pv;
+
+    //Convenience functions for working backwards, because parameters are from the start of particle life
+    //If setting multiple parameters at once, doing the conversion yourself will be faster.
+
+    //sets the x accleration without affecting the instantaneous x velocity or position
+    void setInstantaneousAX(qreal ax);
+    //sets the x velocity without affecting the instantaneous x postion
+    void setInstantaneousSX(qreal vx);
+    //sets the instantaneous x postion
+    void setInstantaneousX(qreal x);
+    //sets the y accleration without affecting the instantaneous y velocity or position
+    void setInstantaneousAY(qreal ay);
+    //sets the y velocity without affecting the instantaneous y postion
+    void setInstantaneousSY(qreal vy);
+    //sets the instantaneous Y postion
+    void setInstantaneousY(qreal y);
+
+    //TODO: Slight caching?
+    qreal curX() const;
+    qreal curSX() const;
+    qreal curY() const;
+    qreal curSY() const;
+
+    int group;
+    ParticleEmitter* e;
+    ParticleSystem* system;
+    int particleIndex;
+    int systemIndex;
+
+    void debugDump();
+    bool stillAlive();
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // PARTICLESYSTEM_H
+
+