html5仿淘宝,京东实现红包雨效果（代码实例）

    //初始化图片  let imgjishi = 'assets/img/daojishi.png'  let bgPlan = 'assets/img/bg-plan.jpg'  let bgRainer = 'assets/img/bg-rainer.jpg'  let redpacket = 'assets/img/redpacket.png'  let close = 'assets/img/close.png'  let dialogExit = 'assets/img/dialog-exit.png'  let buttonCancel = 'assets/img/button-cancel.png'  let buttonExit = 'assets/img/button-exit.png'  let openRedpacket = 'assets/img/open-redpacket.png'  let open = 'assets/img/open.png'  let redpacketResult = 'assets/img/redpacket-result.png'  let buttonUseTicket = 'assets/img/button-use-ticket.png'  let buttonContinue = 'assets/img/button-continue.png'  let cursorAnimation = 'assets/img/cursor-animation.png'  let states = {}  let QingLvGroup;  let hitNum = 0;  let config = {      selfPool:40,      selfPic:'redpacket',      rate:0.5,      maxSpeed:1200,      minSpeed:400,      max:95  }  let ids = [0, 1, 2, 3, 4, 5]  let redpackets = ['全场优惠50元', '20元代金券', '全场优惠50元', '20元代金券', '全场优惠50元', '20元代金券']  let time = 25;  let getIds = []  let radio = document.documentElement.clientWidth/375;  let e;  function rfuc(n){    return n*radio;  }  //初始化红包  function QingLv(config, game){    this.init = function(){        this.config = config;        QingLvGroup = game.add.group();        QingLvGroup.enableBody = true;        QingLvGroup.createMultiple(config.selfPool, config.selfPic); //初始化多个红包        QingLvGroup.setAll('anchor.y',1)        QingLvGroup.setAll('outOfBoundsKill', true);        QingLvGroup.setAll('checkWorldBounds', true);        this.maxWidth = game.width + 300;        game.time.events.loop(Phaser.Timer.SECOND * config.rate, this.createQL, this);    };    this.createQL = function(){        e = QingLvGroup.getFirstExists(false);                if(e) {            if(hitNum >= config.max) {                return;            }            hitNum++;            e.events.onInputDown.removeAll();            var ram= Math.random();            ram =ram 0) {          sprite.kill();                    //点击获得红包,游戏暂停          game.paused = true;          //背景          let hexGraphics = new Phaser.Graphics().beginFill(0x000000, 0.5).drawRect(0,0,document.documentElement.clientWidth,document.documentElement.clientHeight + 2);          let pausedMask = game.add.sprite(0, 0, hexGraphics.generateTexture())                    let openDialog = game.add.sprite(rfuc(62), rfuc(150), 'openRedpacket')                    let open = game.add.sprite(rfuc(130), rfuc(300), 'open')          open.inputEnabled = true;                  let result = game.add.sprite(rfuc(0), rfuc(120), 'redpacketResult')          result.visible = false          let userTicket = game.add.sprite(rfuc(78), rfuc(445), 'buttonUseTicket')          userTicket.visible = false          let goOn = game.add.sprite(rfuc(198), rfuc(445), 'buttonContinue')          goOn.visible = false          let ticketText = {};          let link = ''                    //拆红包          let clickOpen = function() {            //游戏暂停时,点击事件无效,只能通过这种画热点的形式来绑定事件            let openRect = new Phaser.Rectangle(rfuc(130), rfuc(315), 239, 239).copyFrom(open);            if (openRect.contains(game.input.x, game.input.y)) {              let currentWidth = open.width              //拆红包动画              let tempArr = [2, 4, 8, 4, 2, 1]              let index = 0;              let timer = setInterval(function() {                if (index > tempArr.length-1) { index = 0 }                open.width = currentWidth / tempArr[index]                open.height = open.height                open.left = game.world.centerX - open.width / 2                ++index              }, 200)              game.input.onDown.remove(clickOpen, this);              let arrIndex = Math.floor(Math.random() * ids.length)              let redpacketId = ids.splice(arrIndex, 1)              getIds.push(redpacketId[0])              setTimeout(()=> {                timer && clearInterval(timer)                document.getElementById('audioOpen').play()                let text = redpackets[redpacketId[0]]                ticketText=game.add.text(0, rfuc(338),text,{fill:'#ffe67d',fontSize:'46px',fontWeight: 'bolder'})                ticketText.left = game.world.centerX - ticketText.width / 2    //文字相对于屏幕左右居中                openDialog.visible = false                open.visible = false                result.visible = true                userTicket.visible = true                goOn.visible = true                game.input.onDown.add(clickButton, this)              }, 1000)            }           };          let clickButton = function() {            let userTicketRect = new Phaser.Rectangle(rfuc(78), rfuc(445), 194, 66).copyFrom(userTicket);            let continueRect = new Phaser.Rectangle(rfuc(198), rfuc(445), 194, 66).copyFrom(goOn);            if (userTicketRect.contains(game.input.x, game.input.y)) {              window.location.replace(link)              game.input.onDown.remove(clickButton, this);            } else if (continueRect.contains(game.input.x, game.input.y)) {              result.visible = false              userTicket.visible = false              goOn.visible = false              pausedMask.visible = false              ticketText.visible = false              game.paused = false              game.input.onDown.remove(clickButton, this);            }          }          game.input.onDown.add(clickOpen, this)        } else {          sprite.inputEnabled = false;          var anim = sprite.animations.add(config.selfPic);          sprite.play(config.selfPic, 40, false);          anim.onComplete.add(this.fade, this, sprite)          }    };    this.fade = function(sprite){        var tween = game.add.tween(sprite).to({alpha:0}, 300, 'Linear', true)        tween.onComplete.add(this.killed, this, sprite);    };    this.killed = function(sprite){        sprite.kill();    }  }  states.boot = function(game) {    this.preload = function() {        if (typeof(GAME) !== "undefined") {            this.load.baseURL = GAME + "/";        }        if (!game.device.desktop) {            this.scale.scaleMode = Phaser.ScaleManager.EXACT_FIT;            this.scale.forcePortrait = true;            this.scale.refresh();        }    };    this.create = function() {        game.stage.backgroundColor = '#FFF';        game.state.start('preload');    };  };  states.preload = function(game) {      this.preload = function(game) {          //加载图片          game.load.spritesheet('daojishi', imgjishi, 250,120, 4)          game.load.image('bgPlan', bgPlan)          game.load.image('bgRainer', bgRainer)          game.load.spritesheet('redpacket', redpacket, 144, 173, 2)          game.load.image('close', close)          game.load.image('dialogExit', dialogExit)          game.load.image('buttonExit', buttonExit)          game.load.image('buttonCancel', buttonCancel)          game.load.image('openRedpacket', openRedpacket)          game.load.image('open', open)          game.load.image('redpacketResult', redpacketResult)          game.load.image('buttonContinue', buttonContinue)          game.load.image('buttonUseTicket', buttonUseTicket)          game.load.spritesheet('cursorAnimation', cursorAnimation, 74, 108, 2)      };      this.create = function() {          game.state.start('main');      };  };  states.main = function(game) {      this.create = function() {          // 物理系统          game.physics.startSystem(Phaser.Physics.ARCADE);          // 背景图          var bgPlan = game.add.sprite(0, 0, 'bgPlan');          bgPlan.width = game.width;          bgPlan.height = game.height;          var cursorPointer = game.add.sprite(game.world.centerX - 36, game.world.centerY + 86, 'cursorAnimation');          var anim = cursorPointer.animations.add('cursorAnimation');          cursorPointer.play('cursorAnimation', 2, true);          document.getElementById('audioCountDown').play()          // 开始游戏倒计时          var daojishi = game.add.sprite(game.world.centerX - 140, game.world.centerY - 400, 'daojishi');          var anim = daojishi.animations.add('daojishi');          daojishi.play('daojishi', 1, false);          anim.onComplete.add(this.startGame, this, daojishi);      };            this.startGame = function(daojishi){          this.leftTime = time          let bgRainer = game.add.sprite(0, 0, 'bgRainer');          bgRainer.width = game.width;          bgRainer.height = game.height;          daojishi.visible = false;          this.createQingLv();          //添加按钮,并绑定事件          let closeImg = game.add.button(rfuc(20), rfuc(20), 'close', function(){            game.paused = true            pausedMask.visible = true            exitDialog.visible = true            exitButton.visible = true            cancelButton.visible = true            game.input.onDown.add(buttonClick, this)          }.bind(this))                    // 剩余时间          this.leftTimeText = game.add.text(0, 0, this.leftTime, {fill: '#FFF', fontSize: '40px', fontWeight: 'bolder'})          this.leftTimeText.scale.setTo(rfuc(1))          this.leftTimeText.fixedToCamera = true;          this.leftTimeText.cameraOffset.setTo(game.camera.width - rfuc(80), rfuc(20));          let hexGraphics = new Phaser.Graphics().beginFill(0x000000, 0.5).drawRect(0,0,document.documentElement.clientWidth,document.documentElement.clientHeight + 2);          let pausedMask = game.add.sprite(0, 0, hexGraphics.generateTexture())          pausedMask.visible = false;          let exitDialog = game.add.sprite(rfuc(62), rfuc(150), 'dialogExit')          exitDialog.visible = false;          let exitButton = game.add.button(rfuc(80), rfuc(315), 'buttonExit')          exitButton.visible = false;          let isExit = false          let cancelButton = game.add.button(rfuc(200), rfuc(315), 'buttonCancel')          cancelButton.visible = false;          game.time.events.repeat(Phaser.Timer.SECOND, this.leftTime, this.refreshTime, this)          let buttonClick = function() {            let cancelRect = new Phaser.Rectangle(rfuc(200), rfuc(315), 194, 66).copyFrom(cancelButton);            if (cancelRect.contains(game.input.x, game.input.y)) {              game.input.onDown.remove(buttonClick, this)              game.paused = false              pausedMask.visible = false              exitDialog.visible = false              exitButton.visible = false              cancelButton.visible = false            }          }      };      this.createQingLv = function(){          this.qinglv = new QingLv(config, game);          this.qinglv.init();          this.qinglv = new QingLv(config, game);          this.qinglv.init();      };            this.refreshTime = function(){          this.leftTime--;          var tem = this.leftTime;          this.leftTimeText.text = tem;          if(this.leftTime === 0) {              game.paused = true;          }      }  };  //生成游戏  let game = null  if (game == null) {    game = new Phaser.Game(document.documentElement.clientWidth, document.documentElement.clientHeight + 2, Phaser.AUTO, document.getElementById('gameScreen'));    game.state.add('boot', states.boot.bind(game));    game.state.add('preload', states.preload.bind(game));    game.state.add('main', states.main.bind(game));    game.state.start('boot');  }

game.input.onDown.add(clickOpen, this)   //给游戏绑定全局事件let userTicket = game.add.sprite(rfuc(78), rfuc(445), 'buttonUseTicket')        let userTicketRect = new Phaser.Rectangle(78, 445, 194, 66).copyFrom(userTicket);  //获得button的区域//如果点击的位置为button的位置就执行下一步if (userTicketRect.contains(game.input.x, game.input.y)) {//移除全局事件   game.input.onDown.remove(clickButton, this);}

ticketText = game.add.text(0, rfuc(338), '我想居中', {fill: '#ffe67d', fontSize: '46px', fontWeight: 'bolder'})ticketText.left = game.world.centerX - ticketText.width / 2    //文字相对于屏幕左右居中