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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
++
++ #include "qquickgroupgoal_p.h"
++ #include <private/qquickspriteengine_p.h>
++ #include <private/qquicksprite_p.h>
++ #include "qquickimageparticle_p.h"
++ #include <QDebug>
++
++ QT_BEGIN_NAMESPACE
++
++ /*!
++ \qmltype GroupGoal
++ \nativetype QQuickGroupGoalAffector
++ \inqmlmodule QtQuick.Particles
++ \ingroup qtquick-particles
++ \inherits ParticleAffector
++ \brief For changing the state of a group of a particle.
++
++ */
++ /*!
++ \qmlproperty string QtQuick.Particles::GroupGoal::goalState
++
++ The name of the group which the affected particles should move to.
++
++ Groups can have defined durations and transitions between them, setting goalState
++ will cause it to disregard any path weightings (including 0) and head down the path
++ which will reach the goalState quickest. It will pass through intermediate groups
++ on that path for their respective durations.
++ */
++ /*!
++ \qmlproperty bool QtQuick.Particles::GroupGoal::jump
++
++ If true, affected particles will jump directly to the target group instead of taking the
++ shortest valid path to get there. They will also not finish their current state,
++ but immediately move to the beginning of the goal state.
++
++ Default is false.
++ */
++
++ QQuickGroupGoalAffector::QQuickGroupGoalAffector(QQuickItem *parent) :
++ QQuickParticleAffector(parent), m_jump(false)
++ {
++ m_ignoresTime = true;
++ }
++
++ void QQuickGroupGoalAffector::setGoalState(const QString &arg)
++ {
++ if (m_goalState != arg) {
++ m_goalState = arg;
++ emit goalStateChanged(arg);
++ }
++ }
++
++ bool QQuickGroupGoalAffector::affectParticle(QQuickParticleData *d, qreal dt)
++ {
++ Q_UNUSED(dt);
++ QQuickStochasticEngine *engine = m_system->stateEngine;
++ int index = d->systemIndex;
++ int goalIdx = m_system->groupIds[m_goalState];
++ if (!engine){//no stochastic states defined. So cut out the engine
++ //TODO: It's possible to move to a group that is intermediate and not used by painters or emitters - but right now that will redirect to the default group
++ m_system->moveGroups(d, goalIdx);
++ return true;
++ }else if (engine->curState(index) != goalIdx){
++ engine->setGoal(goalIdx, index, m_jump);
++ return true;
++ }
++ return false;
++ }
++
++ QT_END_NAMESPACE
++
++ #include "moc_qquickgroupgoal_p.cpp"