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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"
51 \qmlclass GroupGoal QQuickGroupGoalAffector
52 \inqmlmodule QtQuick.Particles 2
54 \brief The GroupGoal Affector allows you to change the state of a group of a particle.
58 \qmlproperty string QtQuick.Particles2::GroupGoal::goalState
60 The name of the group which the affected particles should move to.
62 Groups can have defined durations and transitions between them, setting goalState
63 will cause it to disregard any path weightings (including 0) and head down the path
64 which will reach the goalState quickest. It will pass through intermediate groups
65 on that path for their respective durations.
68 \qmlproperty bool QtQuick.Particles2::GroupGoal::jump
70 If true, affected particles will jump directly to the target group instead of taking the
71 the shortest valid path to get there. They will also not finish their current state,
72 but immediately move to the beginning of the goal state.
77 QQuickGroupGoalAffector::QQuickGroupGoalAffector(QQuickItem *parent) :
78 QQuickParticleAffector(parent), m_jump(false)
83 void QQuickGroupGoalAffector::setGoalState(QString arg)
85 if (m_goalState != arg) {
87 emit goalStateChanged(arg);
91 bool QQuickGroupGoalAffector::affectParticle(QQuickParticleData *d, qreal dt)
94 QQuickStochasticEngine *engine = m_system->stateEngine;
95 bool notUsingEngine = false;
97 notUsingEngine = true;
99 int index = d->systemIndex;
100 int goalIdx = m_system->groupIds[m_goalState];
101 if (notUsingEngine){//no stochastic states defined. So cut out the engine
102 //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
103 m_system->moveGroups(d, goalIdx);
105 }else if (engine->curState(index) != goalIdx){
106 engine->setGoal(goalIdx, index, m_jump);