(function () {
    var spawnPoint = Vec3.sum(MyAvatar.position, Vec3.multiply(3, Quat.getFront(Camera.getOrientation())));

    // constructor
 
    // constructor
    function TestFx() {
        var animationSettings = JSON.stringify({ fps: 30,
                                                 frameIndex: 0,
                                                 running: true,
                                                 firstFrame: 0,
                                                 lastFrame: 300,
                                                 loop: true });

        this.entity = Entities.addEntity({ type: "ParticleEffect",
                                           animationSettings: animationSettings,
                                           position: spawnPoint,
                                           dimensions: {x: 2, y: 2, z: 2},
                                           emitVelocity: {x: 0.001, y: 0.001, z: 0},
                                           emitRate: 20,
                                           particleRadius: 0.05,
                                           velocitySpread: {x: 0.005, y: 0.005, z: 0.003},
                                           accelerationSpread: {x: 0.05, y: 0.02, z: 0.04},
                                           emitAcceleration: {x: 0, y: 0.15, z: 0},
                                           textures: "https://hifi-public.s3.amazonaws.com/alan/Particles/spark.png",
                                           lifespan: 20.0,
                                           color: {red: 255, green: 255, blue: 255},
                                           visible: true,
                                           locked: false });

        this.isPlaying = true;
   }


    TestFx.prototype.Destroy = function () {
        Entities.editEntity(this.entity, { locked: false });
        Entities.deleteEntity(this.entity);
    }

    var objs = [];
    function Init() {
        objs.push(new TestFx());

    }

    function ShutDown() {
        var i, len = objs.length;
        for (i = 0; i < len; i++) {
            objs[i].Destroy();
        }
        objs = [];
    }

    Init();
    Script.scriptEnding.connect(ShutDown);
})();