game.js

var buttonColours = ["red", "blue", "green", "yellow"];

var gamePattern = [];
var userClickedPattern = [];
var started = false;
var level = 0;

$(document).keypress(function(){
  if (!started) {
    $("#level-title").text("Level "+ level);
    nextSequence();
    started = true;
  }
});

$(".btn").click(function(){
  var userChosenColour = $(this).attr("id");
  userClickedPattern.push(userChosenColour);
  playSound(userChosenColour);
  animatePress(userChosenColour);
  checkAnswer(userClickedPattern.length-1);
  // debug loggin
  console.log(userClickedPattern);
});

function checkAnswer (currentLevel) {
  if (gamePattern[currentLevel] === userClickedPattern[currentLevel]) {
    console.log("success");
    if (userClickedPattern.length === gamePattern.length){
      setTimeout(function(){
      nextSequence();
    }, 1000);
  }
   }  else {
    console.log("wrong");
    playSound("wrong");
    $("body").addClass("game-over");
    $("#level-title").text("Game Over, Press Any Ley to Restart.");
    setTimeout(function(){$("body").removeClass("game-over");}, 200);
    startOver();
  } 
} 



function nextSequence(){
  userClickedPattern = [];
  level++;
  $("#level-title").text("Level "+ level);
  var randomNumber = Math.floor(Math.random() * 4);
  var randomChosenColour = buttonColours[randomNumber];
  gamePattern.push(randomChosenColour);
  $("#"+randomChosenColour).fadeIn(100).fadeOut(100).fadeIn(100);
  playSound(randomChosenColour);
 
  // debug loggin
  console.log(gamePattern);
}


// play sound 
function playSound(name) {
  var audio = new Audio("sounds/"+name+".mp3")
  audio.play();
}


function animatePress(currentColour){
  $("#"+currentColour).addClass("pressed");
  setTimeout(function(){
    $("#"+currentColour).removeClass("pressed");
  }, 100);
}


function startOver () {
  level = 0;
  started = false;
  gamePattern = [];
}