Would like to add a function to calculate percentages

[jiongjiongJOJO]

A feature could be added to calculate the completion rate of achievement groups, so that it can be quickly checked which achievement completion within a group does not match the in-game one.

The original calculation code for the game is as follows (formatted):

  GetAchievementGroupProgress() {
    let t = 0,
      e = 0;
    for (const i of ModelManager_1.ModelManager.AchievementModel.GetGroupAchievements(this.xe, !1)) {
      var r = i.GetFinishState();
      i.GetHiddenState() && 0 === r || void 0 === i.GetMaxProgress() || (t++, 0 !== r && e++)
    }
    return Math.round(100 * e / t) + "%"
  }

After adding the comment:

  GetAchievementGroupProgress() {
    // Initialize the variable totalAchievements to indicate the total number of achievements and completedAchievements to indicate the number of completed achievements.
    let totalAchievements = 0, completedAchievements = 0;

    // Iterate through each achievement in the achievement group
    for (const achievement of ModelManager_1.ModelManager.AchievementModel.GetGroupAchievements(this.xe, false)) {
        // Get the completion status of the current achievement
        var finishState = achievement.GetFinishState();

        // Skip this achievement if it is hidden and uncompleted, or if the maximum progress is undefined
        if (achievement.GetHiddenState() && finishState === 0 || achievement.GetMaxProgress() === undefined) {
            continue;
        }

        // Total number of statistical achievements
        totalAchievements++;

        // If an achievement has been completed, count the number of completed achievements
        if (finishState !== 0) {
            completedAchievements++;
        }
    }

    // Calculate and return percentage of completion, rounded to the nearest whole number
    return Math.round(100 * completedAchievements / totalAchievements) + "%";
}

Try to keep the calculation consistent with the in-game method so it's easier to troubleshoot.