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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#ifndef QQUICK3DPARTICLEAFFECTOR_H
#define QQUICK3DPARTICLEAFFECTOR_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.
//
#include <QObject>
#include <QList>
#include <QQmlListProperty>
#include <QtQuick3D/private/qquick3dnode_p.h>
#include <QtQuick3DParticles/private/qquick3dparticledata_p.h>
#include <QtQuick3DParticles/private/qquick3dparticlesystem_p.h>
#include <QtQuick3DParticles/private/qquick3dparticleemitter_p.h>
QT_BEGIN_NAMESPACE
class Q_QUICK3DPARTICLES_EXPORT QQuick3DParticleAffector : public QQuick3DNode
{
Q_OBJECT
Q_PROPERTY(QQuick3DParticleSystem *system READ system WRITE setSystem NOTIFY systemChanged)
Q_PROPERTY(QQmlListProperty<QQuick3DParticle> particles READ particles)
Q_PROPERTY(bool enabled READ enabled WRITE setEnabled NOTIFY enabledChanged)
QML_NAMED_ELEMENT(Affector3D)
QML_UNCREATABLE("Affector3D is abstract")
QML_ADDED_IN_VERSION(6, 2)
public:
QQuick3DParticleAffector(QQuick3DNode *parent = nullptr);
~QQuick3DParticleAffector() override;
QQuick3DParticleSystem *system() const;
bool enabled() const;
// Particles list handling
QQmlListProperty<QQuick3DParticle> particles();
void appendParticle(QQuick3DParticle *);
qsizetype particleCount() const;
QQuick3DParticle *particle(qsizetype) const;
void clearParticles();
void replaceParticle(qsizetype, QQuick3DParticle *);
void removeLastParticle();
public Q_SLOTS:
void setSystem(QQuick3DParticleSystem *system);
void setEnabled(bool enabled);
Q_SIGNALS:
void update();
void systemChanged();
void enabledChanged();
protected:
QList<QQuick3DParticle *> m_particles;
QQuick3DNode *m_systemSharedParent = nullptr;
private:
friend class QQuick3DParticleSystem;
// From QQmlParserStatus
void componentComplete() override;
// Called once per frame for all the enabled affectors.
virtual void prepareToAffect();
// Called for each living particle attached to the attractor.
virtual void affectParticle(const QQuick3DParticleData &sd, QQuick3DParticleDataCurrent *d, float time) = 0;
static void appendParticle(QQmlListProperty<QQuick3DParticle> *, QQuick3DParticle *);
static qsizetype particleCount(QQmlListProperty<QQuick3DParticle> *);
static QQuick3DParticle *particle(QQmlListProperty<QQuick3DParticle> *, qsizetype);
static void clearParticles(QQmlListProperty<QQuick3DParticle> *);
static void replaceParticle(QQmlListProperty<QQuick3DParticle> *, qsizetype, QQuick3DParticle *);
static void removeLastParticle(QQmlListProperty<QQuick3DParticle> *);
QQuick3DParticleSystem *m_system = nullptr;
bool m_enabled = true;
QMap<QQuick3DParticle *, QMetaObject::Connection> m_connections;
};
QT_END_NAMESPACE
#endif // QQUICK3DPARTICLEAFFECTOR_H
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