BoomBlock.qml Example File

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 import Qt 4.7
 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); }
         }
     ]
 }