微信小程序九宫格抽奖,随机选中奖品。
wxml
<view class="container-out">
<view class="circle" wx:for="{{circleList}}" style="top:{{item.topCircle}}rpx;left:{{item.leftCircle}}rpx;background-color: {{(index%2==0)?colorCircleFirst:colorCircleSecond}};"></view>
<view class="container-in">
<view class="content-out" wx:for="{{awardList}}" style="top:{{item.topAward}}rpx;left:{{item.leftAward}}rpx;background-color: {{(index==indexSelect)?colorAwardSelect:colorAwardDefault}};">
{{item.Award.name}}
</view>
<view class="start-btn" bindtap="startGame" style=" background-color:{{isRunning?'#e7930a':'#ffe400'}}">抽奖</view>
</view>
</view>
js
Page({
data: {
circleList: [],//圆点数组
awardList: [],//奖品数组
colorCircleFirst: '#FFDF2F',//圆点颜色1
colorCircleSecond: '#FE4D32',//圆点颜色2
colorAwardDefault: '#F5F0FC',//奖品默认颜色
colorAwardSelect: '#ffe400',//奖品选中颜色
indexSelect: 0,//被选中的奖品index
isRunning: false,//是否正在抽奖
Award: [
{ name: '2元', value: 2 },
{ name: '免单', value: 100 },
{ name: '3元', value: 3 },
{ name: '2.66元', value: 2.66 },
{ name: '3.88元', value: 3.88 },
{ name: '4元', value: 4 },
{ name: '3.66元', value: 3.66 },
{ name: '2.88元', value: 2.88 },
],//奖品数组
},
onLoad: function () {
var _this = this;
//圆点设置
var leftCircle = 7.5;
var topCircle = 7.5;
var circleList = [];
for (var i = 0; i < 24; i++) {
if (i == 0) {
topCircle = 15;
leftCircle = 15;
} else if (i < 6) {
topCircle = 7.5;
leftCircle = leftCircle + 102.5;
} else if (i == 6) {
topCircle = 15
leftCircle = 620;
} else if (i < 12) {
topCircle = topCircle + 94;
leftCircle = 620;
} else if (i == 12) {
topCircle = 565;
leftCircle = 620;
} else if (i < 18) {
topCircle = 570;
leftCircle = leftCircle - 102.5;
} else if (i == 18) {
topCircle = 565;
leftCircle = 15;
} else if (i < 24) {
topCircle = topCircle - 94;
leftCircle = 7.5;
} else {
return
}
circleList.push({ topCircle: topCircle, leftCircle: leftCircle });
}
this.setData({
circleList: circleList
})
//圆点闪烁
setInterval(function () {
if (_this.data.colorCircleFirst == '#FFDF2F') {
_this.setData({
colorCircleFirst: '#FE4D32',
colorCircleSecond: '#FFDF2F',
})
} else {
_this.setData({
colorCircleFirst: '#FFDF2F',
colorCircleSecond: '#FE4D32',
})
}
}, 500)
//奖品item设置
var awardList = [];
//间距,怎么顺眼怎么设置吧.
var topAward = 25;
var leftAward = 25;
for (var j = 0; j < 8; j++) {
if (j == 0) {
topAward = 25;
leftAward = 25;
} else if (j < 3) {
topAward = topAward;
//166.6666是宽.15是间距.下同
leftAward = leftAward + 166.6666 + 15;
} else if (j < 5) {
leftAward = leftAward;
//150是高,15是间距,下同
topAward = topAward + 150 + 15;
} else if (j < 7) {
leftAward = leftAward - 166.6666 - 15;
topAward = topAward;
} else if (j < 8) {
leftAward = leftAward;
topAward = topAward - 150 - 15;
}
var Award = this.data.Award[j];
awardList.push({ topAward: topAward, leftAward: leftAward, Award: Award });
}
this.setData({
awardList: awardList
})
},
//开始游戏
startGame: function () {
if (this.data.isRunning) return
this.setData({
isRunning: true
})
var _this = this;
var indexSelect = 0
var i = 0;
let f = Math.floor(Math.random() *8);
console.warn(f)
var timer = setInterval(function () {
indexSelect++;
//可根据自己的需求改变转盘速度
i += 90;
if (i > 1000) {
//判断是随机生成的那个值得时候就停止
if (f == indexSelect % 8){
_this.setData({
indexSelect: indexSelect
})
//去除循环
clearInterval(timer)
_this.setData({
isRunning: false
})
}
//获奖提示
if(!_this.data.isRunning){
wx.showModal({
title: '恭喜您',
content: '获得了' + (_this.data.Award[f].name)+'尚坡红包',
showCancel: false,//去掉取消按钮
success: function (res) {
if (res.confirm) {
}
}
})
}
}
indexSelect = indexSelect % 8;
_this.setData({
indexSelect: indexSelect
})
}, (200 + i))
}
})
wxss
.container-out {
height: 600rpx;
width: 650rpx;
background-color: #b136b9;
margin: 100rpx auto;
border-radius: 40rpx;
box-shadow: 0 10px 0 #871a8e;
position: relative;
}
.container-in {
width: 580rpx;
height: 530rpx;
background-color: #871a8e;
border-radius: 40rpx;
position: absolute;
left: 0;
right: 0;
top: 0;
bottom: 0;
margin: auto;
}
.circle {
position: absolute;
display: block;
border-radius: 50%;
height: 20rpx;
width: 20rpx;
}
.content-out {
position: absolute;
text-align: center;
height: 150rpx;
width: 166.6666rpx;
background-color: #f5f0fc;
border-radius: 15rpx;
box-shadow: 0 5px 0 #d87fde;
color: #f6251e;
line-height: 150rpx;
}
/**居中 加粗*/
.start-btn {
position: absolute;
margin: auto;
top: 0;
left: 0;
bottom: 0;
right: 0;
border-radius: 15rpx;
height: 150rpx;
width: 166.6666rpx;
background-color: #ffe400;
box-shadow: 0 5px 0 #e7930a;
color: #f6251e;
text-align: center;
font-size: 55rpx;
font-weight: bolder;
line-height: 150rpx;
}