const total_items = 8 //獎品的總數(shù)
let prizeId = -1 // 獎品的結果，初始值為-1，表示還沒有開始抽獎
let current_index = -1 //當前選中獎項索引
const minimum_jumps = 30 // 超過該數(shù)字進入抽獎
let jumps = 0 //抽獎轉動次數(shù)，初始值為0
let speed = 100  //轉動速度
let timer = 0   
let disabled = false
// 獎品抽獎
function controll() {
  jumps += 1
  runCircle()
  // 抽到獎品停止游戲
  if (jumps > minimum_jumps + 10 && prizeId === current_index) {
    clearTimeout(timer)
    disabled = false
    const message = document.createElement('p')
    message.className = 'message'
    message.innerHTML = `恭喜你獲得：${prize_list[current_index].name}!`
    container.appendChild(message)
    prizeId = -1
    jumps = 0
  } else {
      // 加快
    if (jumps < minimum_jumps) {
      speed -= 5
      // 決定獎品的位置
    } else if (jumps === minimum_jumps) {
      prizeId = generatePrizeNumber()
    } else {
      // 下一個就是獎品時放慢速度
      if ((jumps > minimum_jumps + 10) && prizeId === (current_index + 1)) {
        speed += 600
      } else {
        speed += 20 // 減速
      }
    }
    if (speed < 40) {
      speed = 40
    }
    timer = setTimeout(controll, speed)
  }
}
function init() {
  jumps = 0
  speed = 100
  prizeId = -1
  controll()
}