Qt Reference Documentation

# BoomBlock.qml Example File

demos/declarative/samegame/qml/samegame/SamegameCore/BoomBlock.qml

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     import QtQuick 1.1
     import Qt.labs.particles 1.0

     Item {
         id: block
         property bool dying: false
         property bool spawned: false
         property int type: 0

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

         Image {
             id: img
             source: {
                 if(type == 0){
                     "pics/redStone.png";
                 } else if(type == 1) {
                     "pics/blueStone.png";
                 } else {
                     "pics/greenStone.png";
                 }
             }
             opacity: 0
             Behavior on opacity { NumberAnimation { duration: 200 } }
             anchors.fill: parent
         }

         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){
                     "pics/redStar.png";
                 } else if (type == 1) {
                     "pics/blueStar.png";
                 } else {
                     "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); }
             }
         ]
     }