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Diffstat (limited to 'src/particles/qquickgroupgoal.cpp')
-rw-r--r-- | src/particles/qquickgroupgoal.cpp | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/src/particles/qquickgroupgoal.cpp b/src/particles/qquickgroupgoal.cpp new file mode 100644 index 0000000000..0d7f15a9e1 --- /dev/null +++ b/src/particles/qquickgroupgoal.cpp @@ -0,0 +1,112 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the QtQuick 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 |