////  fireworksLaunchButtonEntityScript.js////  Created by Eric Levin on 3/7/2016//  Copyright 2016 High Fidelity, Inc.////  This is the chapter 3 entity script of the fireworks tutorial////  Distributed under the Apache License, Version 2.0.   (function() {    Script.include("../../libraries/utils.js");    var _this;    Fireworks = function() {      _this = this;      _this.launchSound = SoundCache.getSound("https://s3-us-west-1.amazonaws.com/hifi-content/eric/Sounds/missle+launch.wav");      _this.explosionSound = SoundCache.getSound("https://s3-us-west-1.amazonaws.com/hifi-content/eric/Sounds/fireworksExplosion.wav");      _this.TIME_TO_EXPLODE = 3000;    };     Fireworks.prototype = {       startNearTrigger: function() {        _this.shootFirework(_this.position);      },       startFarTrigger: function() {        _this.shootFirework(_this.position);      },       clickReleaseOnEntity: function() {        _this.shootFirework(_this.position);      },         shootFirework: function(launchPosition) {        Audio.playSound(_this.launchSound, {          position: launchPosition,          volume: 0.5        });          var smoke = Entities.addEntity({          type: "ParticleEffect",          position: _this.position,          velocity: {x: 0, y: 3, z: 0},          linearDamping: 0,          lifespan: 10,          lifetime: 20,          isEmitting: true,          name: "Smoke Trail",          maxParticles: 3000,          emitRate: 80,          emitSpeed: 0,          speedSpread: 0,          polarStart: 0,          polarFinish: 0,          azimuthStart: -3.14,          azimuthFinish: 3.14,          emitAcceleration: {            x: 0,            y: 0.01,            z: 0          },          accelerationSpread: {            x: 0.01,            y: 0,            z: 0.01          },          radiusSpread: 0.03,          particleRadius: 0.3,          radiusStart: 0.06,          radiusFinish: 0.9,          alpha: 0.1,          alphaSpread: 0,          alphaStart: 0.7,          alphaFinish: 0,          textures: "https://hifi-public.s3.amazonaws.com/alan/Particles/Particle-Sprite-Smoke-1.png",          emitterShouldTrail: true,        });         Script.setTimeout(function() {          var explodePosition = Entities.getEntityProperties(smoke, "position").position;          _this.explodeFirework(explodePosition);        }, _this.TIME_TO_EXPLODE);       },     explodeFirework: function(explodePosition) {        Audio.playSound(_this.explosionSound, {          position: explodePosition        });        var firework = Entities.addEntity({          name: "fireworks emitter",          position: explodePosition,          type: "ParticleEffect",          colorStart: hslToRgb({            h: Math.random(),            s: 0.5,            l: 0.7          }),          color: hslToRgb({            h: Math.random(),            s: 0.5,            l: 0.5          }),          colorFinish: hslToRgb({            h: Math.random(),            s: 0.5,            l: 0.7          }),          maxParticles: 10000,          lifetime: 20,          lifespan: randFloat(1.5, 3),          emitRate: randInt(500, 5000),          emitSpeed: randFloat(0.5, 2),          speedSpread: 0.2,          emitOrientation: Quat.fromPitchYawRollDegrees(randInt(0, 360), randInt(0, 360), randInt(0, 360)),          polarStart: 1,          polarFinish: randFloat(1.2, 3),          azimuthStart: -Math.PI,          azimuthFinish: Math.PI,          emitAcceleration: {            x: 0,            y: randFloat(-1, -0.2),            z: 0          },          accelerationSpread: {            x: Math.random(),            y: 0,            z: Math.random()          },          particleRadius: randFloat(0.001, 0.1),          radiusSpread: Math.random() * 0.1,          radiusStart: randFloat(0.001, 0.1),          radiusFinish: randFloat(0.001, 0.1),          alpha: randFloat(0.8, 1.0),          alphaSpread: randFloat(0.1, 0.2),          alphaStart: randFloat(0.7, 1.0),          alphaFinish: randFloat(0.7, 1.0),          textures: "http://ericrius1.github.io/PlatosCave/assets/star.png",        });          Script.setTimeout(function() {          Entities.editEntity(firework, {            isEmitting: false          });        }, randInt(500, 1000));       },       preload: function(entityID) {        _this.entityID = entityID;        _this.position = Entities.getEntityProperties(_this.entityID, "position").position;       }     };     // entity scripts always need to return a newly constructed object of our type    return new Fireworks();  });