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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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qquickgroupgoal_p.h"
+#include <private/qquickspriteengine_p.h>
+#include <private/qquicksprite_p.h>
+#include "qquickimageparticle_p.h"
+#include <QDebug>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+ \qmlclass GroupGoal QQuickGroupGoalAffector
+ \inqmlmodule QtQuick.Particles 2
+ \inherits Affector
+ \brief The GroupGoal Affector allows you to change the state of a group of a particle.
+
+*/
+/*!
+ \qmlproperty string QtQuick.Particles2::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.Particles2::GroupGoal::jump
+
+ If true, affected particles will jump directly to the target group instead of taking the
+ 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(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;
+ bool notUsingEngine = false;
+ if (!engine)
+ notUsingEngine = true;
+
+ int index = d->systemIndex;
+ int goalIdx = m_system->groupIds[m_goalState];
+ if (notUsingEngine){//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