定义好奖品下标，计时器开始抽奖，请求接口，出现中奖奖品之后，获取中奖商品对应的奖品下标，再次计时器判断当前移动的小标是否为中奖商品的下标，并且是否转到3圈（防止转1圈就停止），如果时就清除两次计时器。

当前代码封装为九宫格的组件；

vue代码： 

<template>
	<view class="page" v-if="merchantInfo.cdn_static">
		<image class="bg" :src="merchantInfo.cdn_static +'statistics/luckDrawImg/sudoku/page_bg.png'" mode="aspectFill"></image>
		<view class="content">
			<view class="logo">
				<image :src="merchantInfo.logo" mode="heightFix"></image>
			</view>
			<view class="box">
				<view class="awards">
					<view class="awardsItem" v-for="(item,index) in awardsList" :key="index" :class="item.active ? 'awardsActive' : ''" @click="startPlay(index)">
						<view class="play" v-if="index == 4">
							<view class="go">{{item.title}}</view>
							<view v-if="index == 4" class="count">{{total}}次机会</view>
						</view>
						<image :src="merchantInfo.cdn_static + item.img" v-else></image>
					</view>
				</view>
				
				<view class="notification">
					<image :src="merchantInfo.cdn_static +'statistics/luckDrawImg/sudoku/notification.png'" mode="heightFix"></image>
					<text>好礼转不停</text>
				</view>
				<view class="btns">
					<view class="btn" @click="rule_show=true">
						<image :src="merchantInfo.cdn_static +'statistics/luckDrawImg/sudoku/rule.png'"></image>
					</view>
					<view class="btn" @click="getResult()">
						<image :src="merchantInfo.cdn_static +'statistics/luckDrawImg/sudoku/prize.png'"></image>
					</view>
				</view>
			</view>
		</view>
		<view class="win" v-if="rule_show">
			<scroll-view scroll-y class="win_box .win_box_bg">
				<mp-html :content="luckDrawInfo.rule" />
			</scroll-view>
			<text class="iconfont iconcolseIcon theme-font-white" @click="rule_show=false"></text>
		</view>
		<view class="win" v-if="result_show">
			<view class="win_box1">
				<image class="win_bg" :src="merchantInfo.cdn_static +'statistics/luckDrawImg/result_bg.png'" mode=""></image>
				<view class="win_content">
					<view class="win_tips theme-font-white">{{currentPrize.desc}}</view>
					<view class="win_title">{{currentPrize.title}}</view>
					<view class="win_btn" @click="choiseAddress()">{{currentPrize.is_address==1?'选择地址':'确定'}}</view>
				</view>
			</view>
		</view>
		<view class="win" v-if="prize_show">
			<view class="win_tit theme-font-white">我的奖品</view>
			<view class="win_box2">
				<view class="items">
					<view class="left i_title">奖品</view>
					<view class="right i_title">中奖时间</view>
				</view>
				<scroll-view scroll-y class="list">
					<view class="item" v-for="(item,index) in list" :key="index">
						<view class="left">{{item.lottery_prize_title}}</view>
						<view class="right" v-if="item.is_address==1&&!item.address_id">
							<view class="r_btn"  @click="choiseAddress1(item)">去领奖</view>
						</view>
						<view class="right" v-else>{{item.created_time}}</view>
					</view>
				</scroll-view>
			</view>
			<text class="iconfont iconcolseIcon theme-font-white" @click="prize_show=false"></text>
		</view>
	</view>

</template>

<script>
	import { luckDrawInfo } from '@/api/luckDraw.js';
	import colors from '@/mixins/color';
	export default {
		mixins: [colors],
		data() {
			return {//https://cdn.dev.scrm.juplus.cn/InQLzDLoAl2S9LyNJUXQ45gpA.png
				mask: true,
				wtf:true,
				luckDrawInfo: {},
				rule_show:false,
				result_show:false,
				prize_show:false,
				total:0,
				currentPrize:{},
				list:[],
				id: "",
				awardsList: [],
				indexArray: [0, 1, 2, 5, 8, 7, 6, 3],
				num: 0,
				count: 0,
				timer: null
			}
		},
		props: {
			userId: {
				type: [Number,String]
			},
			type:{
				type: [Number,String]
			}
		},
		//渲染完了
		mounted() {
			this.id = this.userId;
			this.init();
		},
		methods: {
			/**
			 * 设置奖项
			 */
			setAwardsList(data){
				this.awardsList = [];
				let arrayBefore = data.length > 0 ? data.slice(0,4) : [];
				let arrayAfter = data.length > 0 ? data.slice(4) : [];
				this.awardsList = [...arrayBefore];
				this.awardsList.push({
					title: "抽"
				});
				this.awardsList = [...this.awardsList,...arrayAfter];
				this.awardsList.forEach((item,index) => {
					item.active = index == 4 ? true : false;
				});
			},
			init(){
				if(this.userInfo){
					this.getInfo()
				}else{
					setTimeout(()=>{
						this.init()
					},500)
				}
			},
			getInfo(){
				luckDrawInfo.getDetail({id:this.id}).then(res => {
					this.luckDrawInfo=res.data
					this.total=res.data.my_can_num
					this.setAwardsList(res.data.lottery_prize);
					this.action('lottery',this.id,0,2,this.luckDrawInfo.title,'','lottery')
				})
			},
			choiseAddress(){
				this.currentPrize.is_address==1?uni.navigateTo({
						url:'/pages/address/address'
					}):''
				this.result_show=false
				// 重置抽奖
				this.awardsList.forEach((item,index) => {
					item.active = index == 4 ? true : false;
				});
				this.num = 0;
				this.count = 0;
				this.timer = null;
			},
			choiseAddress1(data){
				this.currentPrize=data
				uni.navigateTo({
					url:'/pages/address/address'
				})
				this.prize_show=false
			},
			setAddress(id){
				luckDrawInfo.setAddress({address_id:id,history_id:this.currentPrize.history_id||this.currentPrize.id}).then(res => {
					uni.showToast({
						title:"地址设置成功",
						icon:'none'
					})
				})
			},
			getResult(){
				if(!this.wtf){
					return false
				}
				luckDrawInfo.getResult({lottery_id:this.id}).then(res => {
					this.list=res.data.data
					this.prize_show=true
				})
			},
			// 点击开始,请求接口抽奖
			startPlay(index) {
				if (index != 4) return false;
				
				if(this.luckDrawInfo.is_register==1&&!this.userInfo.type){
					uni.navigateTo({
						url:'/pages/login/login'
					})
					return false
				}
				if(this.luckDrawInfo.is_form==1&&this.luckDrawInfo.user_form_count==0){
					uni.navigateTo({
						url:'/pages/form/form?id='+this.luckDrawInfo.form_id+'&type_id=' + this.id + '&type=lottery'
					})
					return false
				}
				if(!this.wtf){
					return false
				}
				
				// 活动未开始或活动已结束
				let startTimeMs = new Date(this.luckDrawInfo.start_time).getTime();
				let endTimeMs = new Date(this.luckDrawInfo.end_time).getTime();
				let nowTimeMs = new Date().getTime();
				if (nowTimeMs < startTimeMs) {
					uni.showToast({
						icon: "none",
						title: "活动未开始"
					})
					return false;
				}
				if (nowTimeMs > endTimeMs) {
					uni.showToast({
						icon: "none",
						title: "活动已结束"
					})
					return false;
				}
				
				this.mask = false;
				this.wtf = false;
				
				// 抽奖开始
				clearInterval(this.timer)
				this.timer = setInterval(() => {
					this.awardsList.forEach((item,index) => {
						item.active = false;
					});
					this.awardsList[this.indexArray[this.num]].active = true;
					this.num++;
					if (this.num >= this.indexArray.length) {
						this.num = 0;
						this.count++;
					}
				},100);
				
				luckDrawInfo.run({id:this.id}).then(res => {
					this.currentPrize = res.data;
					this.total = res.data.row_lottery_new.my_can_num;
					// 抽奖停止
					let prizeIndex = this.awardsList.findIndex(item => item.id == this.currentPrize.id);
					let prizeNumIndex = prizeIndex != -1 ? this.indexArray.findIndex(item => item == prizeIndex) : null;
					let delayTimer = setInterval(()=>{
						// 奖品选中
						if (this.count >= 3 && this.num == prizeNumIndex) {
							clearInterval(this.timer);
							clearInterval(delayTimer);
							this.awardsList.forEach((item,index) => {
								item.active = index == prizeIndex ? true : false;
								this.$set(this.awardsList, index, {...this.awardsList[index], active: item.active});
							});
							setTimeout(() => {
								this.result_show = true;
								this.wtf = true;
							},600);
						}
					},100)
				}).catch(err => {
					this.wtf = true;
				});

			}
		}
	}
</script>

<style scoped lang="scss">
	@import 'index.scss';
	/**/
</style>

scss代码：

.page{
	width: 750rpx;
	height: 100vh;
	position: relative;
}

.bg{
	width: 750rpx;
	height: 100vh;
}

.content{
	width: 750rpx;
	min-height: 100vh;
	height: 1448rpx;
	position: absolute;
	top: 0;
	left: 0;
}


.logo{
	height: 60rpx;
	display: flex;
	justify-content: center;
	margin-top: 90rpx;
	
	image{
		height: 60rpx;
	}
}

.box{
	width: 680rpx;
	margin: 0 auto;
	margin-top: 330rpx;
	
	.awards{
		width: 525rpx;
		height: 525rpx;
		margin: 0 auto;
		display: flex;
		flex-wrap: wrap;
		justify-content: space-between;
		align-content:space-between;
		
		.awardsItem{
			width: 161rpx;
			height: 161rpx;
			background: linear-gradient(132deg, #FFCEA4 0%, #FFE6CB 100%);
			box-shadow: 0rpx 6rpx 0rpx 0rpx #E98F5D;
			border-radius: 15rpx;
			display: flex;
			flex-direction: column;
			align-items: center;
			justify-content: center;
			cursor: pointer;
			
			image{
				width: 132rpx;
				height: 132rpx;
				border-radius: 12rpx;
			}
				
			.play{
				display: flex;
				flex-direction: column;
				align-items: center;
				justify-content: center;
				.go{
					font-size: 68rpx;
					font-family: PingFangSC-Semibold, PingFang SC;
					font-weight: 600;
					color: #A10B14;
				}
				
				.count{
					font-size: 24rpx;
					font-family: PingFangSC-Regular, PingFang SC;
					font-weight: 400;
					color: #A10B14;
				}
			}
			
		}
		.awardsActive{
			background: linear-gradient(132deg, #FFECBB 0%, #FFB100 100%);
			box-shadow: 0rpx 6rpx 0rpx 0rpx #E38800, inset 0rpx 2rpx 6rpx 0rpx rgba(255,255,255,0.65), inset 0rpx -2rpx 6rpx 0rpx rgba(255,255,255,0.3);
		}
	}
	
	.notification{
		height: 40rpx;
		margin-top: 226rpx;
		display: flex;
		justify-content: center;
		align-items: center;
		
		image{
			height: 32rpx;
			margin-right: 16rpx;
		}
		text{
			font-size: 28rpx;
			font-family: PingFangSC-Regular, PingFang SC;
			font-weight: 400;
			color: #FF8D3B;
		}
	}
	
	.btns{
		display: flex;
		align-items: center;
		justify-content: space-between;
		margin-top: 38rpx;
	}
	
	.btn{
		width: 332rpx;
		height: 110rpx;
		image{
			width: 100%;
			height: 100%;
		}
	}
	
}

.win{
	width: 750rpx;
	height: 100vh;
	background: rgba(0, 0, 0, 0.8);
	position: fixed;
	top: 0;
	left: 0;
	z-index: 2;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
}

.win_box{
	width: 662rpx;
	height: 60%;
	padding: 40rpx;
	box-sizing: border-box;
	border-radius: 24rpx;
}

.win_box_bg{
	background: #FFCE2B;
}

.bg3{
	background: #C3E5FE;
}

.iconcolseIcon{
	font-size: 58rpx;
	margin-top: 98rpx;
}

.win_box1{
	width: 630rpx;
	height: 922rpx;
	position: relative;
}

.win_bg{
	width: 630rpx;
	height: 922rpx;
}

.win_content{
	width: 630rpx;
	height: 922rpx;
	position: absolute;
	left: 0;
	top: 0;
	display: flex;
	flex-direction: column;
	align-items: center;
}

.win_tips{
	font-size: 48rpx;
	font-family: SourceHanSansSC-Medium, SourceHanSansSC;
	font-weight: bold;
	margin-top: 290rpx;
}

.win_title{
	font-size: 48rpx;
	font-family: SourceHanSansSC-Medium, SourceHanSansSC;
	font-weight: bold;
	color: #FE6631;
	margin: 170rpx 0;
}

.win_btn{
	width: 280rpx;
	height: 80rpx;
	line-height: 80rpx;
	text-align: center;
	background: #FFE047;
	border-radius: 46rpx;
	font-size: 32rpx;
	font-family: SourceHanSansSC-Medium, SourceHanSansSC;
	font-weight: bold;
	color: #13112C;
}

.win_tit{
	font-size: 48rpx;
	font-family: SourceHanSansSC-Medium, SourceHanSansSC;
	font-weight: bold;
	margin-bottom: 32rpx;
}

.win_box2{
	width: 662rpx;
	height: 900rpx;
	background: #FFFFFF;
	border-radius: 24rpx;
	display: flex;
	flex-direction: column;
}

.items{
	width: 662rpx;
	height: 108rpx;
	background: #C3E5FE;
	border-radius: 24rpx 24rpx 0rpx 0rpx;
	display: flex;
	align-items: center;
	flex-shrink:0
}

.left,.right{
	width: 50%;
	text-align: center;
	font-family: SourceHanSansSC-Medium, SourceHanSansSC;
	font-weight: bold;
}

.i_title{
	font-size: 36rpx;
}

.list{
	height: 792rpx;
	padding-bottom: 20rpx;
	overflow: hidden;
}

.item{
	width: 662rpx;
	height: 88rpx;
	display: flex;
	align-items: center;
	justify-content: space-around;
}

.item:nth-child(2n){
	background-color: #F4F4F4;
}

.r_btn{
	width: 160rpx;
	height: 60rpx;
	line-height: 60rpx;
	text-align: center;
	background: #FFC659;
	border-radius: 46rpx;
	font-family: SourceHanSansSC-Medium, SourceHanSansSC;
	font-weight: bold;
	font-size: 32rpx;
	margin:0 auto;
}

效果: