From 5787d29fbc3c05b79764e4931882ceeecd6a3a5d Mon Sep 17 00:00:00 2001
From: Burt <1020103647@qq.com>
Date: Wed, 10 Jan 2024 17:18:55 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E4=BC=98=E5=8C=96=E4=B9=9D=E5=AE=AB?=
 =?UTF-8?q?=E6=A0=BC=E6=8A=BD=E5=A5=96?=
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---
 src/pages/demo/lottery.vue | 25 +++++++++++++++----------
 1 file changed, 15 insertions(+), 10 deletions(-)

diff --git a/src/pages/demo/lottery.vue b/src/pages/demo/lottery.vue
index 28c49ff..f4f728e 100644
--- a/src/pages/demo/lottery.vue
+++ b/src/pages/demo/lottery.vue
@@ -28,15 +28,17 @@
 <script lang="ts" setup>
 import { reactive, computed } from 'vue'
 
+const giftLen = 8 // 九宫格有8个礼物
+const loop = 4 // 设置转多少圈，在最后一圈会慢下来
+const totalStep = giftLen * loop // 总的步数 32
+const lastLoopStep = totalStep - giftLen // 最后一圈，24
 const numList = [1, 2, 3, 8, -1, 4, 7, 6, 5]
-
 const btnIndex = numList[4] // 最中间那个是展示按钮
-// const activeIndex = ref(0)
 
 const state = reactive({
   lottery: 0, // 奖品
   step: -1, // 目前转动的步数
-  stopStep: 32, // 目标步数，上面我们有提到默认都会转几圈，这里默认转四圈，一圈有八个格子，四圈就是要转动32步
+  stopStep: totalStep, // 停下来的时需要走的步数
   speed: 2, // 转动速度，我们是通过定时器去实现转动效果的，所以这也就是定时器的执行频率
   timer: null, // 定时器ID
   loading: false,
@@ -46,7 +48,7 @@ const activeIndex = computed(() => {
   return (state.step % 8) + 1
 })
 
-function runFn() {
+function run() {
   // 当前步数大于等于目标步数
   if (state.step >= state.stopStep) {
     // 清空定时器，停止转动
@@ -55,17 +57,20 @@ function runFn() {
     state.step = state.lottery
     state.speed = 2
     state.loading = false
-    console.log(`恭喜获得${state.lottery}号奖品`)
+    console.log(`恭喜获得${activeIndex.value}号奖品`)
+    uni.showModal({
+      title: `恭喜获得${activeIndex.value}号奖品`,
+    })
     return
   }
   // 转动到最后一圈时，增加speed，也就是定时器执行间隔时间变长，转动速度变慢
-  if (state.step > 24 + state.lottery) {
+  if (state.step > lastLoopStep + state.lottery) {
     state.speed++
   }
   // 抽奖函数每执行一次，当前步数加一
   state.step++
   // 重新开启定时器执行抽奖函数
-  state.timer = setTimeout(runFn, state.speed * 30)
+  state.timer = setTimeout(run, state.speed * 30)
 }
 // 点击抽奖之后调用的函数
 function handleClick(n) {
@@ -75,12 +80,12 @@ function handleClick(n) {
   if (state.loading) return
   state.loading = true
   // 最终获得的奖品，实际业务中是通过接口获取的，这里使用随机数来模拟下
-  state.lottery = Math.floor(Math.random() * 9)
+  state.lottery = Math.ceil(Math.random() * giftLen)
   console.log(state.lottery)
   // 计算总共要转动的步数，转4圈后再转到奖品处
-  state.stopStep = state.lottery + 32
+  state.stopStep = state.lottery + totalStep
   // 执行抽奖函数
-  runFn()
+  run()
 }
 </script>