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42 #include "qquickgroupgoal_p.h"
43 #include <private/qquickspriteengine_p.h>
44 #include <private/qquicksprite_p.h>
45 #include "qquickimageparticle_p.h"
52 \instantiates QQuickGroupGoalAffector
53 \inqmlmodule QtQuick.Particles 2
54 \ingroup qtquick-particles
56 \brief For changing the state of a group of a particle
60 \qmlproperty string QtQuick.Particles2::GroupGoal::goalState
62 The name of the group which the affected particles should move to.
64 Groups can have defined durations and transitions between them, setting goalState
65 will cause it to disregard any path weightings (including 0) and head down the path
66 which will reach the goalState quickest. It will pass through intermediate groups
67 on that path for their respective durations.
70 \qmlproperty bool QtQuick.Particles2::GroupGoal::jump
72 If true, affected particles will jump directly to the target group instead of taking the
73 the shortest valid path to get there. They will also not finish their current state,
74 but immediately move to the beginning of the goal state.
79 QQuickGroupGoalAffector::QQuickGroupGoalAffector(QQuickItem *parent) :
80 QQuickParticleAffector(parent), m_jump(false)
85 void QQuickGroupGoalAffector::setGoalState(QString arg)
87 if (m_goalState != arg) {
89 emit goalStateChanged(arg);
93 bool QQuickGroupGoalAffector::affectParticle(QQuickParticleData *d, qreal dt)
96 QQuickStochasticEngine *engine = m_system->stateEngine;
97 bool notUsingEngine = false;
99 notUsingEngine = true;
101 int index = d->systemIndex;
102 int goalIdx = m_system->groupIds[m_goalState];
103 if (notUsingEngine){//no stochastic states defined. So cut out the engine
104 //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
105 m_system->moveGroups(d, goalIdx);
107 }else if (engine->curState(index) != goalIdx){
108 engine->setGoal(goalIdx, index, m_jump);