Qt 4.8: BoomBlock.qml Example File (declarative/tutorials/samegame/samegame4/content/BoomBlock.qml)

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# BoomBlock.qml Example File

declarative/tutorials/samegame/samegame4/content/BoomBlock.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
     **     notice, this list of conditions and the following disclaimer.
     **   * Redistributions in binary form must reproduce the above copyright
     **     notice, this list of conditions and the following disclaimer in
     **     the documentation and/or other materials provided with the
     **     distribution.
     **   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
     **     of its contributors may be used to endorse or promote products derived
     **     from this software without specific prior written permission.
     **
     **
     ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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     ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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     import QtQuick 1.0
     import Qt.labs.particles 1.0

     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 }
             }
         }

         Particles {
             id: particles

             width: 1; height: 1
             anchors.centerIn: parent

             emissionRate: 0
             lifeSpan: 700; lifeSpanDeviation: 600
             angle: 0; angleDeviation: 360;
             velocity: 100; velocityDeviation: 30
             source: {
                 if (type == 0)
                     return "../../shared/pics/redStar.png";
                 else if (type == 1)
                     return "../../shared/pics/blueStar.png";
                 else
                     return "../../shared/pics/greenStar.png";
             }
         }

         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); }
             }
         ]
     }