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Crazy Carousel Game

 import QtQuick 2.0
 import Felgo 4.0

 EntityBase {
     id: enemy
     entityType: "enemy"

     property alias image: image
     property double speed: 10 * gameScene.logic.speedUp

     MultiResolutionImage {
         id: image
         width: parent.width
         height: parent.height
     }

     // provides up/down movement
     MovementAnimation {
         id: upDownMovement
         target: enemy // set animation target to enemy object
         property: "y" // we animate the y position
         velocity: -enemy.speed // start with up movement
         running: true // animation starts automatically

         // limits the y property (defines possible movement area)
         // we set a random area for each enemy between
         minPropertyValue: -(Math.random() * 10 + 5) // min y is random between -5 and -15
         maxPropertyValue: Math.random() * 10 + 5 // max y is random between +5 to +15

         // change direction after min/max is reached (e.g. move up after down movement is finished)
         onLimitReached: {
             if(upDownMovement.velocity > 0)
                 upDownMovement.velocity = -enemy.speed;
             else
                 upDownMovement.velocity = enemy.speed;