Geoguessr average score display

Calculates average score from your last x amount of games. Restart of browser or refresh clears the currently saved scores.
当前为 2023-11-12 提交的版本，查看最新版本。
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// ==UserScript==
// @name         Geoguessr average score display
// @namespace    https://gf.qytechs.cn/en/users/1080671
// @version      0.1
// @description  Calculates average score from your last x amount of games. Restart of browser or refresh clears the currently saved scores.
// @author       Lemson
// @match        https://www.geoguessr.com/game/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=geoguessr.com
// @grant        GM_setValue
// @grant        GM_getValue
// @run-at       document-idle
// @license MIT
// ==/UserScript==

(function () {
  "use strict";  // Load saved scores from Tampermonkey storage
  let score = GM_getValue('savedScores', []) || [];
  console.log(score);
    let totalScore = score.reduce((sum, value) => sum + value, 0);

    //Edit maxEntries to however many rounds you want the average of.
  const maxEntries = 20;
  const targetSelector = '[data-qa="final-result-score"] > div';
  const averageScoreContainerSelector = 'div[class^="result-overlay_overlayContent__"]';

  // Add a flag to track if the element has been detected
  let elementDetected = false;

  const observer = new MutationObserver((mutations) => {
    mutations.forEach((mutation) => {
      const targetElements = document.querySelectorAll(targetSelector);

      // Check if the element is present
      if (targetElements.length > 0) {
        // Check the flag to prevent multiple log entries
        if (!elementDetected) {
          // Get the text content of the child element
          const childText = targetElements[0].innerText;

          // Convert the string to a number
          const scoreValue = parseInt(childText, 10);

          // Add the score to the array
          score.push(scoreValue);

          // Limit the array to a maximum of 20 entries
          if (score.length > maxEntries) {
            score.shift(); // Remove the oldest entry
          }

          // Save the scores to Tampermonkey storage
          GM_setValue('savedScores', score);

          // Sum up all the scores in the array
          totalScore = score.reduce((sum, value) => sum + value, 0);

          // Calculate the average score
          const averageScore = totalScore / score.length;

          // Display the average score on the page
          displayAverageScore(averageScore);

          // Set the flag to true to prevent further detections
          elementDetected = true;
        }
      } else {
        // If the element is not present, reset the flag
        elementDetected = false;
      }
    });
  });

  const targetNode = document.body;

  if (targetNode) {
    observer.observe(targetNode, { childList: true, subtree: true });
  } else {
    console.error("Target node not found!");
  }

  function displayAverageScore(averageScore) {
    const parentElement = document.querySelector(averageScoreContainerSelector);

    if (parentElement) {

      // Create a new div element to display the average score
      const averageScoreDiv = document.createElement('div');
      averageScoreDiv.style.textAlign = "center";
      averageScoreDiv.innerHTML = `Average Score: ${averageScore.toFixed(2)}<br>(over ${maxEntries} rounds)`;

      // Append the new div to the parent element
      parentElement.appendChild(averageScoreDiv);
    } else {
      console.error("Parent element not found!");
    }
  }
})();
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