- Qt 5.3
- Qt Quick
- Qt Quick Particles Examples - Affectors
- spritegoal.qml Example File
- Qt 5.3.2 Reference Documentation

# spritegoal.qml Example File

particles/affectors/content/spritegoal.qml

    /****************************************************************************
    **
    ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
    ** Contact: http://www.qt-project.org/legal
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
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    **     notice, this list of conditions and the following disclaimer in
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    **     of its contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
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    import QtQuick 2.0
    import QtQuick.Particles 2.0

    Item {
        id: root
        width: 360
        height: 540
        MouseArea {
            id: ma
            anchors.fill: parent
        }

        ParticleSystem { id: sys }
        Image {
            source: "../../images/finalfrontier.png"
            transformOrigin: Item.Center
            anchors.centerIn: parent
            NumberAnimation on rotation {
                from: 0
                to: 360
                duration: 200000
                loops: Animation.Infinite
            }

        }
        ImageParticle {
            system: sys
            groups: ["starfield"]
            source: "qrc:///particleresources/star.png"
            colorVariation: 0.3
            color: "white"
        }
        Emitter {
            id: starField
            system: sys
            group: "starfield"

            emitRate: 80
            lifeSpan: 2500

            anchors.centerIn: parent

            //acceleration: AngledDirection {angleVariation: 360; magnitude: 200}//Is this a better effect, more consistent velocity?
            acceleration: PointDirection { xVariation: 200; yVariation: 200; }

            size: 0
            endSize: 80
            sizeVariation: 10
        }
        Emitter {
            system: sys
            group: "meteor"
            emitRate: 12
            lifeSpan: 5000
            acceleration: PointDirection { xVariation: 80; yVariation: 80; }
            size: 15
            endSize: 300
            anchors.centerIn: parent
         }
        ImageParticle {
            system: sys
            groups: ["meteor"]
            sprites:[Sprite {
                    id: spinState
                    name: "spinning"
                    source: "../../images/meteor.png"
                    frameCount: 35
                    frameDuration: 40
                    randomStart: true
                    to: {"explode":0, "spinning":1}
                },Sprite {
                    name: "explode"
                    source: "../../images/_explo.png"
                    frameCount: 22
                    frameDuration: 40
                    to: {"nullFrame":1}
                },Sprite {//Not sure if this is needed, but seemed easiest
                    name: "nullFrame"
                    source: "../../images/nullRock.png"
                    frameCount: 1
                    frameDuration: 1000
                }
            ]
        }
        SpriteGoal {
            groups: ["meteor"]
            system: sys
            goalState: "explode"
            jump: true
            anchors.fill: rocketShip
            width: 60
            height: 60
        }
        Image {
            id: rocketShip
            source: "../../images/rocket.png"
            anchors.centerIn: holder
            rotation: (circle.percent+0.25) * 360
            z: 2
        }
        Item {
            id: holder
            x: circle.x - Math.sin(circle.percent * 6.28316530714)*200
            y: circle.y + Math.cos(circle.percent * 6.28316530714)*200
            z: 1
        }

        Item {
            id: circle
            x: root.width / 1.2
            y: root.height / 1.7
            property real percent: 0

            SequentialAnimation on percent {
                id: circleAnim1
                loops: Animation.Infinite
                running: true
                NumberAnimation {
                duration: 4000
                from: 1
                to: 0
                }

            }
        }

        ImageParticle {
            z:0
            system: sys
            groups: ["exhaust"]
            source: "qrc:///particleresources/fuzzydot.png"

            color: "orange"
            SequentialAnimation on color {
                loops: Animation.Infinite
                ColorAnimation {
                    from: "red"
                    to: "cyan"
                    duration: 1000
                }
                ColorAnimation {
                    from: "cyan"
                    to: "red"
                    duration: 1000
                }
            }

            colorVariation: 0.2
        }

        Emitter {
            id: trailsNormal2
            system: sys
            group: "exhaust"

            emitRate: 300
            lifeSpan: 500

            y: holder.y
            x: holder.x

            velocity: PointDirection { xVariation: 40; yVariation: 40; }
            velocityFromMovement: 16

            acceleration: PointDirection { xVariation: 10; yVariation: 10; }

            size: 4
            sizeVariation: 4
        }
    }