Lab1-MathGame/GamePage.html at master · Autumn2018-CSCI491-AdvancedWebDesign/Lab1-MathGame · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <meta name="description" content="">
    <meta name="author" content="">
    <link rel="icon" href="https://getbootstrap.com/favicon.ico">

    <title>Simple Math Game</title>

    <!-- Bootstrap core CSS -->
    <link href="Starter%20Template%20for%20Bootstrap_files/bootstrap.css" rel="stylesheet">

    <!-- Custom styles for this template -->
    <link href="Starter%20Template%20for%20Bootstrap_files/starter-template.css" rel="stylesheet">
    <!-- <link href="css/simple-sidebar.css" rel="stylesheet"> -->
  </head>

  <script>
    var max     = 10; //Maximum number that can be generated in a problem (starting value)
    var min     = 0;  //Minimum number that can be generated in a problem (starting value)
    var score   = 0;  //User-score.  Increments by one for each problem answered correctly.
    var lives   = 3;  //User-lives.  Decrements by one for each problem answered incorrectly.
    var level   = 1;  //User-level.  Increments by one everytime the score increments by five.

    var numAddends     = 20;
    var JSONarray   = {"numbers":[]};
    var num1JSONlocation;
    var num2JSONlocation;

    generateNumbers();
    chooseProblems();

    function getRandomInt(max, min)
    {
      return Math.floor((Math.random() * max) + min);
    }

    function generateNumbers()
    {
      JSONarray.numbers = [];

      for (index = 0; index < numAddends; index++)
      {
        JSONarray.numbers.push(getRandomInt(max, min).toString());
      }
    }

    function chooseProblems()
    {
      num1JSONlocation = getRandomInt(JSONarray.numbers.length, 0);
      num2JSONlocation = getRandomInt(JSONarray.numbers.length, 0);

      //num1 & num2 JSON location must be odd.
      if ( (num1JSONlocation % 2) == 0)
      {
        num1JSONlocation++;
      }
      if ( (num2JSONlocation % 2) == 0)
      {
        num2JSONlocation++;
      }
    }

  </script>

  <body>

    <!-- Menu bar ontop of the page -->
    <nav class="navbar navbar-expand-md navbar-dark bg-dark fixed-top">
      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExampleDefault" aria-controls="navbarsExampleDefault" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>

      <div class="collapse navbar-collapse" id="navbarsExampleDefault">
        <ul class="navbar-nav mr-auto">
          <li class="nav-item active">
            <a class="nav-link" href="HomePage.html">Home <span class="sr-only">(current)</span></a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#" id="highscores-button">High Scores</a>
          </li>
        </ul>
      </div>
    </nav>

    <!-- Highscores sidebar -->
    <div id="wrapper">
      <div id="sidebar-wrapper">
        <ul class="sidebar-nav">
          <p id=highscoresToHTML></p>
        </ul>
      </div>
    </div>

    <main role="main" class="container">

      <!-- User interface -->
      <div class="starter-template">
        <h1>Evilscaught Presents: The Math Game</h1>
        <a id="lives">Lives: <br></a>
        <a id="score">Score: <br></a>
        <a id="level">Level: <br></a>
        <a id="problem"></a>

        <div class="answer-container" id="answer-container">
          <label for="answerField">
              <p>The answer is: <span class="tooltiptext">Press Enter to Submit Answer</span> </p> <input type="text" id="answerField"/>
          </label>
        </div>

        <h1 id="message"><br></h1>
        <a id="tryAgain" style="visibility: hidden; color: white; text-decoration: underline;" href="#" onclick="resetGame();">Try Again?<br></a>
      </div>

      <div class="username-prompt" id="usernamePrompt">
        <h3>Enter your username to record your current score<br>(only a new highscore will result in update)</h3>
        <div class="username-container" id="username-container">
          <label for="usernameField">
            <p>My username is: </p> <input type="text" id="usernameField"/>
          </label>
        </div>
      </div>

    </main><!-- /.container -->

    <!-- Allows the menu-bar ontop of page to adjust to page size -->
    <nav class="nav navbar-expand-md navbar-dark bg-dark fixed-left"> </nav>

    <!-- Required libraries for highscores side-bar to render and animate -->
    <script src="vendor/jquery/jquery.min.js"></script>
    <script src="vendor/bootstrap/js/bootstrap.bundle.min.js"></script>

    <script>
      //e is an abbreviation for "element", i.e. eMessage is short for elementMessage.
      //This syntax is used to indicate that HTML elements are being called.
      var eProblem     = document.getElementById("problem");
      var eAnswerField = document.getElementById("answerField");
      var eMessage     = document.getElementById("message");
      var eTryAgain    = document.getElementById("tryAgain");
      var eLives       = document.getElementById("lives");
      var eScore       = document.getElementById("score");
      var eLevel       = document.getElementById("level");

      var eUsernamePrompt = document.getElementById("usernamePrompt");
      var eUsernameField  = document.getElementById("usernameField");

      var usernamesJSON  = null;
      var highscoresJSON = null;

      eLives.innerHTML = "Lives: " + lives + "<br>";
      eScore.innerHTML = "Score: " + score + "<br>";
      eLevel.innerHTML = "Level: " + level + "<br>";
      eProblem.innerHTML = "<br>What is " + JSONarray.numbers[num1JSONlocation] + " + " + JSONarray.numbers[num2JSONlocation] + "?<br>";

      document.getElementById("highscoresToHTML").innerHTML = "<li><a>No Highscores Yet.</a></li>";

      //This function allows user to press "enter" to submit the answer to thier problem.
      eAnswerField.onkeydown = function(event)
      {
        if (event.keyCode == 13)
        {
          checkAnswer();
        }
      }

      //This function allows user to press "enter" to submit their username and record their highscore.
      eUsernameField.onkeydown = function(event)
      {
        if (event.keyCode == 13)
        {
          logHighScore();
        }
      }

      function resetGame()
      {
        lives = 3;
        score = 0;
        level = 0;
        max = 10;
        min = 0;
        eLives.innerHTML = "Lives: " + lives + "<br>";
        eScore.innerHTML = "Score: " + score + "<br>";
        eLevel.innerHTML = "Level: " + level + "<br>";
        eMessage.innerHTML = "";
        document.getElementById("answer-container").style.visibility = "visible";
        eProblem.style.visibility = "visible";
        eTryAgain.style.visibility = "hidden";
        generateNumbers();
        generateNewProblem();
      }

      //This function will toggle the highscores sidebar
      $("#highscores-button").click(function(e)
      {
        e.preventDefault();
        $("#wrapper").toggleClass("toggled");
      });

      //This function will make the answer-container shake if the user submits incorrect input.
      jQuery.fn.shake = function()
      {
        this.each(function(i)
        {
          $("#answer-container").css({ "position" : "relative" });
          for (var x = 1; x <= 3; x++)
          {
            $(this).animate({ left: -5 }, 10).animate({ left: 0 }, 50).animate({ left: 25 }, 10).animate({ left: 0 }, 50);
          }
        });
        return this;
      }

      function checkAnswer()
      {
        var correctAnswer = parseInt(JSONarray.numbers[num1JSONlocation]) + parseInt(JSONarray.numbers[num2JSONlocation]);

        //If the user-entered answer is equal to the correct answer:
        if (answerField.value == correctAnswer)
        {
          score++;

          //Reset answer field and any messages on display
          eAnswerField.value = "";
          eMessage.innerHTML = "";
          eScore.innerHTML = "Score: " + score + "<br>";

          //If the score has increment by five, level up!
          if (score % 5 == 0)
          {
            level++;
            max+=10;
            min+=10;
            generateNumbers();

            eMessage.innerHTML = "Level Up!";
            eLevel.innerHTML = "Level: " + level + "<br>";
          }

          generateNewProblem();
        }
          //If the user did not enter anything:
        else if (answerField.value == "")
        {
          eMessage.innerHTML = "Cannot be Empty!";
          $("#answer-container").shake();
        }
        //If the user-entered answer is not equal to the correct answer:
        else
        {
          $("#answer-container").shake();
          lives--;
          if (lives < 0)
          {
            document.getElementById("answer-container").style.visibility = "hidden";
            eMessage.innerHTML = "GAME OVER";
            eTryAgain.style.visibility = "visible";
            eProblem.style.visibility = "hidden";
            eUsernameField.style.visibility = "visible";
          }
          else
          {
            eMessage.innerHTML = "Try Again";
            eLives.innerHTML = "Lives: " + lives + "<br>";
          }
        }
      }

      function generateNewProblem()
      {
        chooseProblems();
        document.getElementById("problem").innerHTML = "<br>What is " + JSONarray.numbers[num1JSONlocation] + " + " + JSONarray.numbers[num2JSONlocation] + "?<br>";
      }

      //'highscores' and 'usernames' are parallel arrays, they both have the same length
      function logHighScore()
      {
          var usernames = JSON.parse(usernamesJSON);
          var highscores = JSON.parse(highscoresJSON);

          //If there are no existing usernames and highscores make a new entry
          if ( (usernames == null) && (highscores == null) )
          {
            usernames = [];
            highscores = [];
            usernames.push(eUsernameField.value);
            highscores.push(score);
          }
          //If the entered username already exists, replace their highscore only if ...
          //... their new highscore is greater than the old one.
          else if ( usernames.includes(eUsernameField.value) )
          {
            for (index = 0; index < highscores.length; index++)
            {
              if ( (eUsernameField.value == usernames[index]) && (score > highscores[index]) )
              {
                highscores[index] = score;
              }
            }
          }
          //Otherwise, make a new entry for that username.
          else
          {
            //Add new username & highscore respective to its rank in the list of existing highscores
            for (index = 0; index < highscores.length; index++)
            {
              if (score <= highscores[index])
              {
                highscores.splice(index, 0, score);
                usernames.splice(index, 0, eUsernameField.value);
                break;
              }
            }
          }
          eUsernameField.value = "";

          //Update highscores and usernames sidebar
          var html = "";
          for (index = highscores.length - 1; index >= 0; index--)
          {
            html += "<li><a>" + usernames[index] + ": " + highscores[index] + "</a></li>";
          }
          document.getElementById("highscoresToHTML").innerHTML = html;
          //Toggle highscores sidebar to visible
          $("#wrapper").toggleClass("toggled");


          //Convert highscores and usernames back to JSON
          usernamesJSON = JSON.stringify(usernames);
          highscoresJSON = JSON.stringify(highscores);
      }
    </script>
  </body>
</html>