qtdeclarative/examples/declarative/particles/trails/fireballs.qml

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import QtQuick 2.0
import QtQuick.Particles 2.0

Rectangle {
    id: root
    width: 360
    height: 540
    color: "black"

    ParticleSystem{
        id: particles
    }

    /*
    ImageParticle{
        id: fireball
        anchors.fill: parent
        particles: ["E"]
        system: particles
        image: "content/particleA.png"
        colorVariation: 0.2
        color: "#00ff400f"
    }
    */
    ImageParticle{
        id: smoke
        system: particles
        anchors.fill: parent
        particles: ["A", "B"]
        image: "content/particle.png"
        colorVariation: 0
        color: "#00111111"
    }
    ImageParticle{
        id: flame
        anchors.fill: parent
        system: particles
        particles: ["C", "D"]
        image: "content/particle.png"
        colorVariation: 0.1
        color: "#00ff400f"
    }
    Emitter{
        id: fire
        system: particles
        particle: "C"

        y: parent.height
        width: parent.width

        particlesPerSecond: 350
        particleDuration: 3500

        acceleration: PointDirection{ y: -17; xVariation: 3 }
        speed: PointDirection{xVariation: 3}

        particleSize: 24
        particleSizeVariation: 8
        particleEndSize: 4
    }
    FollowEmitter{
        id: fireSmoke
        particle: "B"
        system: particles
        follow: "C"
        width: root.width
        height: root.height - 68

        particlesPerParticlePerSecond: 1
        particleDuration: 2000

        speed: PointDirection{y:-17*6; yVariation: -17; xVariation: 3}
        acceleration: PointDirection{xVariation: 3}

        particleSize: 36
        particleSizeVariation: 8
        particleEndSize: 16
    }
    FollowEmitter{
        id: fireballFlame
        anchors.fill: parent
        system: particles
        particle: "D"
        follow: "E"

        particlesPerParticlePerSecond: 120
        particleDuration: 180
        emissionWidth: 8
        emissionHeight: 8

        particleSize: 16
        particleSizeVariation: 4
        particleEndSize: 4
    }
    
    FollowEmitter{
        id: fireballSmoke
        anchors.fill: parent
        system: particles
        particle: "A"
        follow: "E"

        particlesPerParticlePerSecond: 128
        particleDuration: 2400
        emissionWidth: 16
        emissionHeight: 16

        speed: PointDirection{yVariation: 16; xVariation: 16}
        acceleration: PointDirection{y: -16}

        particleSize: 24
        particleSizeVariation: 8
        particleEndSize: 8
    }
    Emitter{
        id: balls
        system: particles
        particle: "E"

        y: parent.height
        width: parent.width

        particlesPerSecond: 2
        particleDuration: 7000

        speed: PointDirection{y:-17*4*2; xVariation: 6*6}
        acceleration: PointDirection{y: 17*2; xVariation: 6*6}

        particleSize: 12
        particleSizeVariation: 4
    }

}