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| |
| #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 |
| \instantiates QQuickGroupGoalAffector |
| \inqmlmodule QtQuick.Particles |
| \ingroup qtquick-particles |
| \inherits Affector |
| \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; |
| 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 |
| |
| #include "moc_qquickgroupgoal_p.cpp" |