- Qt 5.5
- Qt Quick
- QML Advanced Tutorial 4 - Finishing Touches
- BoomBlock.qml Example File
- Qt 5.5.1 Reference Documentation

# BoomBlock.qml Example File

tutorials/samegame/samegame4/content/BoomBlock.qml

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** 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
    **     notice, this list of conditions and the following disclaimer.
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    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
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    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
    **
    **
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    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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    import QtQuick 2.0
    import QtQuick.Particles 2.0

    Item {
        id: block

        property int type: 0
        property bool dying: false

        property bool spawned: false

        Behavior on x {
            enabled: spawned;
            SpringAnimation{ spring: 2; damping: 0.2 }
        }
        Behavior on y {
            SpringAnimation{ spring: 2; damping: 0.2 }
        }

        Image {
            id: img

            anchors.fill: parent
            source: {
                if (type == 0)
                    return "../../shared/pics/redStone.png";
                else if (type == 1)
                    return "../../shared/pics/blueStone.png";
                else
                    return "../../shared/pics/greenStone.png";
            }
            opacity: 0

            Behavior on opacity {
                NumberAnimation { properties:"opacity"; duration: 200 }
            }
        }

        ParticleSystem {
            id: sys
            anchors.centerIn: parent
            ImageParticle {
                // ![0]
                source: {
                    if (type == 0)
                        return "../../shared/pics/redStar.png";
                    else if (type == 1)
                        return "../../shared/pics/blueStar.png";
                    else
                        return "../../shared/pics/greenStar.png";
                }
                rotationVelocityVariation: 360
                // ![0]
            }

            Emitter {
                id: particles
                anchors.centerIn: parent
                emitRate: 0
                lifeSpan: 700
                velocity: AngleDirection {angleVariation: 360; magnitude: 80; magnitudeVariation: 40}
                size: 16
            }
        }

        states: [
            State {
                name: "AliveState"
                when: spawned == true && dying == false
                PropertyChanges { target: img; opacity: 1 }
            },

            State {
                name: "DeathState"
                when: dying == true
                StateChangeScript { script: particles.burst(50); }
                PropertyChanges { target: img; opacity: 0 }
                StateChangeScript { script: block.destroy(1000); }
            }
        ]
    }