如何让游戏等级解锁提示仅触发一次？Node.js代码求助

问题分析 #

原代码中，当玩家分数停留在4、7、9区间时（比如答对到4分后答错后续题目），每次执行判断都会重复输出对应等级的解锁提示——原因是未记录等级提示是否已触发，仅通过当前分数区间判断是否输出。

优化方案 #

新增一个unlockedLevels对象，用于记录每个等级的提示是否已触发。仅当玩家分数首次达到对应等级且未触发过提示时，输出解锁信息并标记该等级为已触发。

优化后完整代码 #

var readlineSync = require('readline-sync');

var userName = readlineSync.question("May we know your name please? ");

console.log("Hello " + userName + " to the neog.camp fun quiz game!!\n");

console.log("Please answer 4 questions correctly to reach Level 1 of the game,7 to reach Level 2 of the game, and 9 to reach Level 3 of the game.\nALL THE BEST :) \n\n");


var currentScore = 0;
// 新增：记录已触发的等级提示
var unlockedLevels = {
  level1: false,
  level2: false,
  level3: false
};
var highScores =
{
  azhar: 10,
  bhargav: 7
};

function ask(question, answer) {
  var userAnswer = readlineSync.question(question);
  if (userAnswer === answer) {
    console.log("Correct!!");
    currentScore++;
    console.log("score: ", currentScore);
    
    // 仅在分数提升时检查等级，避免重复判断
    if(currentScore === 4 && !unlockedLevels.level1) {
      console.log("Congrats!! You entered LEVEL 1 of the game!!");
      unlockedLevels.level1 = true;
    }
    if(currentScore === 7 && !unlockedLevels.level2) {
      console.log("Congrats!! You entered LEVEL 2 of the game!!");
      unlockedLevels.level2 = true;
    }
    if(currentScore === 9 && !unlockedLevels.level3) {
      console.log("Congrats!! You entered LEVEL 3 of the game!! Yippeee ;) ");
      unlockedLevels.level3 = true;
    }
  } else {
    console.log("Wrong!!");
    console.log("score: ", currentScore);
  }
}

var questions =
  [
    {
      question: "What is the capital of INDIA? ",
      answer: "New Delhi"
    },
    {
      question: "What is the full name of MS Dhoni? ",
      answer: "Mahendra Singh Dhoni"
    },
    {
      question: "Who founded Amazon ?",
      answer: "Jeff Bezos"
    },
    {
      question: "Which is the largest country in Asia? ",
      answer: "China"
    },
    {
      question: "How many sides does a quadrilateral have? ",
      answer: "4"
    },
    {
      question: "Which Indian Cricketer did hit six sixes in six balls against England in 2007? ",
      answer: "Yuvraj Singh"
    },
    {
      question: "What is the full form of CS GO? ",
      answer: "Counter Strike Global Offensive"
    },
    {
      question: "How many players are there in a football team excluding the goal keeper? ",
      answer: "10"
    },
    {
      question: "Which language is called the mother of all programming languages?",
      answer: "C"
    },
    {
      question: "What is the name of the highest mountain in the world? ",
      answer: "Mount Everest"
    }
  ];

for (var i = 0; i < questions.length; i++) {
  var currentQuestion = questions[i];
  ask(currentQuestion.question, currentQuestion.answer);
}

console.log("\nYour final score is : ", currentScore);

if (currentScore >= highScores.azhar) {
  console.log("Congratulations!! You are the new highest scorer!! \t Kindly send the screenshot of the score to us.\nThank You")
} else {
  console.log("Oops!! You failed to beat the highest scorer!!\nBetter Luck Next Time")
  console.log("High Scores :- \n" + "Azhar : " + highScores.azhar + "\nBhargav : " + highScores.bhargav);
}

关键修改说明 #

1. 新增unlockedLevels对象：存储每个等级的提示触发状态，初始值均为false
2. 调整等级判断逻辑：将等级检查移至答对题的分支中（仅分数增加时触发），同时判断对应等级是否未触发过，输出提示后立即标记为已触发
3. 精准分数判断：将原区间判断改为精准匹配currentScore === 4/7/9，确保仅在分数首次达到该值时触发提示

内容的提问来源于stack exchange，提问作者Azhar Choudhury