// Learn cc.Class:// - https://docs.cocos.com/creator/manual/en/scripting/class.html// Learn Attribute:// - https://docs.cocos.com/creator/manual/en/scripting/reference/attributes.html// Learn life-cycle callbacks:// - https://docs.cocos.com/creator/manual/en/scripting/life-cycle-callbacks.htmlcc.Class({extends:cc.Component,properties:{// foo: {// // ATTRIBUTES:// default: null, // The default value will be used only when the component attaching// // to a node for the first time// type: cc.SpriteFrame, // optional, default is typeof default// serializable: true, // optional, default is true// },// bar: {// get () {// return this._bar;// },// set (value) {// this._bar = value;// }// },},// LIFE-CYCLE CALLBACKS:// onLoad () {},start(){},// update (dt) {},});