Qt Quick Demo - Same Game

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 import QtQuick 2.0
 import QtQuick.Particles 2.0
 import "."

 Emitter {
     property Item block: parent
     anchors.fill: parent
     shape: EllipseShape { fill: true }
     group: {
         if (block.type == 0){
             "redspots";
         } else if (block.type == 1) {
             "bluespots";
         } else if (block.type == 2) {
             "greenspots";
         } else {
             "yellowspots";
         }
     }
     size: Settings.blockSize * 2
     endSize: Settings.blockSize/2
     lifeSpan: 30000
     enabled: false
     emitRate: 60
     maximumEmitted: 60
     velocity: PointDirection{ y: 4; yVariation: 4 }
     /* Possibly better, but dependent on gerrit change,28212
     property real mainIntensity: 0.8
     property real subIntensity: 0.1
     property real colorVariation: 0.005
     onEmitParticles: {//One group, many colors, for better stacking
         for (var i=0; i<particles.length; i++) {
             var particle = particles[i];
             if (block.type == 0) {
                 particle.red = mainIntensity + (Math.random() * colorVariation * 2 - colorVariation);
                 particle.green = subIntensity + (Math.random() * colorVariation * 2 - colorVariation);
                 particle.blue = subIntensity + (Math.random() * colorVariation * 2 - colorVariation);
             } else if (block.type == 1) {
                 particle.red = subIntensity + (Math.random() * colorVariation * 2 - colorVariation);
                 particle.green = subIntensity + (Math.random() * colorVariation * 2 - colorVariation);
                 particle.blue = mainIntensity + (Math.random() * colorVariation * 2 - colorVariation);
             } else if (block.type == 2) {
                 particle.red = subIntensity + (Math.random() * colorVariation * 2 - colorVariation);
                 particle.green = mainIntensity + (Math.random() * colorVariation * 2 - colorVariation);
                 particle.blue = subIntensity + (Math.random() * colorVariation * 2 - colorVariation);
             } else if (block.type == 3) {
                 particle.red = mainIntensity + (Math.random() * colorVariation * 2 - colorVariation);
                 particle.green = mainIntensity + (Math.random() * colorVariation * 2 - colorVariation);
                 particle.blue = subIntensity + (Math.random() * colorVariation * 2 - colorVariation);
             } else {
                 particle.red = mainIntensity + (Math.random() * colorVariation * 2 - colorVariation);
                 particle.green = mainIntensity + (Math.random() * colorVariation * 2 - colorVariation);
                 particle.blue = mainIntensity + (Math.random() * colorVariation * 2 - colorVariation);
             }
         }
     }
     */
 }