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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

HTML

            
              
<header>SNAKE</header>
 
<!-- Main table for the snake -->
<section class="snakeTable"></section>

<!-- modular window before and after games -->
<section class="modul hidden">
  <div class="start">
    <span>Play Snake</span>
  </div>
</section>

<footer>
  <p>Created by <a href="https://remybeumier.be" target="_blank">Rémy Beumier</a></p>
</footer>

            
          
!

CSS

            
              
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  min-height: 100vh;
  font-family: arial;
  background: #2ecc71;
  background-image: linear-gradient(to top left, #2980b9, #16a085, #2ecc71);
  position: relative;
  text-align: center;
}

/* title */
header {
  text-align: center;
  font-size: 32px;
  letter-spacing: 10px;
  padding: 20px 10px;
  color: white;
}

/* main table */
.snakeTable {
  width: 210px;
  height: 230px;
  margin: auto;
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
  flex-wrap: wrap;
  box-shadow: 0 0 1px 2px rgba(0,0,0,0.3);
}
@media only screen and (min-width: 768px) {
  .snakeTable {
    width: 315px;
    height: 345px;
  }
}

/* all boxes in the table */
.box {
  background: white;
  border: solid 1px #16a085;
  width: 10px;
  height: 10px;
}
@media only screen and (min-width: 768px) {
  .box {
    width: 15px;
    height: 15px;
  }
}

.food {
  background: #8e44ad;
}

.snake {
  background: #16a085;
}

/* bar showing status below table */
.status {
  background: white;
  color: #16a085;
  border: solid 1px #16a085;
  width: 210px;
  height: 20px;
}
@media only screen and (min-width: 768px) {
  .status {
    width: 315px;
    height: 30px;
  }
}

.score {
  float: right;
  padding: 0 5px;
  line-height: 20px;
}
@media only screen and (min-width: 768px) {
  .score {
    padding: 0 10px;
    line-height: 30px;
    font-size: 20px;
  }
}

.hidden {
  display: none !important;
}

/* modular window before and after game */
.modul {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background: rgba(0,0,0,0.5);
  text-align: center;
}
.start {
  background: rgba(256,256,256,1);
  padding: 40px 50px;
/*   margin: auto; */
  width: 240px;
  box-shadow: 0 0 2px 3px rgba(0,0,0,0.3);
}
.start span {
  color: #16a085;
  border: 1px solid;
  padding: 10px 20px;
  cursor: pointer;
}
.start span:hover {
  background: #16a085;
  color: white;
}

footer {
  padding: 5px;
  color: white;
  font-size: 14px;
}

footer a {
  color: #333;
  text-decoration: none;
}

footer a:hover {
  color: white;
  text-decoration: underline;
}

            
          
!

JS

            
              
// ADD time?
// increase speed over time/food

var snakeTable = document.querySelector(".snakeTable");
var boxes = document.getElementsByClassName("box");
var modul = document.querySelector(".modul");
var start = document.querySelector(".start");

var table = {
  rowsCols: 21,
  boxes: 21*21
};

var snake = {
  direction: "right",
  position: [[6,10], [7,10], [8,10], [9,10], [10,10]],
  speed: 200,
  score: 0,
  final: 0,
  time: 0,
  canTurn: 0,
  init: function() {
    snake.direction = "right";
    snake.position = [[6,10], [7,10], [8,10], [9,10], [10,10]];
    snake.speed = 200;
    snake.score = 0;
    snake.time = 0;
    snake.canTurn = 0;
    snakeTable.innerHTML = "";
    tableCreation();
  }
};

// init game
snake.init();

start.addEventListener("click", startSnake);

document.addEventListener("keydown", function(e) {
  if (e.keyCode === 13 && snake.time === 0) {
    startSnake();
  }
});

// start game
function startSnake() {
  modul.classList.add("hidden");
  clearInterval(checkPageInterval);
  snake.time = 1;
  renderSnake();
  randomFood();
  // interval, heart of the game
  setInt = setInterval(function() {
    move();
  }, snake.speed);
}

// end of game
function stopp() {
  clearInterval(setInt);
  snake.final = snake.score;
  start.querySelector("span").innerHTML = snake.final + " Points !";
  setTimeout(function() {
    start.querySelector("span").innerHTML = "Play Snake";
  }, 800);
  snake.init();
  modul.classList.remove("hidden");
}

// move the snake function
function move() {
  // check if move allowed & then eat food
  hitFood();
  hitBorder();
  hitSnake();
  // actually move the snake
  updatePositions();
  renderSnake();
  document.addEventListener("keydown", turn);
  snake.canTurn = 1;
}

function updatePositions() {
  // remove last snake part (first snake pos)
  boxes[snake.position[0][0] + snake.position[0][1] * table.rowsCols].classList.remove("snake");
  snake.position.shift();
  // add new snake part
  var head = snake.position[snake.position.length - 1];
  switch (snake.direction) {
    case "left":
      snake.position.push([head[0] - 1, head[1]]);
      break;
    case "up":
      snake.position.push([head[0], head[1] - 1]);
      break;
    case "right":
      snake.position.push([head[0] + 1, head[1]]);
      break;
    case "down":
      snake.position.push([head[0], head[1] + 1]);
      break;
    default:
      console.log("no direction !");
  }
}

// checks border contact
function hitBorder() {
  var headPos = snake.position.length-1;
  // goes of limits
  if (((snake.position[headPos][0] === table.rowsCols-1) && (snake.direction === "right")) || ((snake.position[headPos][0] === 0) && (snake.direction === "left")) || ((snake.position[headPos][1] === table.rowsCols-1) && (snake.direction === "down")) ||  ((snake.position[headPos][1] === 0) && (snake.direction === "up"))) {
    // console.log("border hit");
    stopp();
  }
}

// checks self contact
function hitSnake() {
  var headPos = snake.position.length-1;
  for (var i=0; i<headPos; i++) {
    if (snake.position[headPos].toString() === snake.position[i].toString()) {
      // console.log("snake hit");
      stopp();
    }
  } 
}

// checks food contact
function hitFood() {
  var head = snake.position[snake.position.length-1];
  var tail = snake.position[0];
  if (head.toString() === foodPos.toString()) {
    boxes[random].classList.remove("food");
    snake.position.unshift(tail);
    randomFood();
    snake.score += 10;
    scoreElt.innerHTML = snake.score + " pts";
  }
}

// random 'food'
function randomFood() {
  var randomX = Math.floor(Math.random() * table.rowsCols);
  var randomY = Math.floor(Math.random() * table.rowsCols);
  random = randomX + randomY * table.rowsCols;
  // picks another foodPos if food pops on snake
  while (boxes[random].classList.contains("snake")) {
    randomX = Math.floor(Math.random() * table.rowsCols);
    randomY = Math.floor(Math.random() * table.rowsCols);
    random = randomX + randomY * table.rowsCols;
  }  
  boxes[random].classList.add("food");
  foodPos = [randomX, randomY];
}

// read positions and render the snake
function renderSnake() {
  for (var i=0; i<snake.position.length; i++) {
    boxes[snake.position[i][0] + snake.position[i][1] * table.rowsCols].classList.add("snake");
  }
}

// keypress handling to turn
function turn(e) {
  if (snake.canTurn) {
    switch (e.keyCode) {
      case 13:
        // document.removeEventListener()
        break;
      case 37:// left
        if (snake.direction === "right") return;
        snake.direction = "left";
        break;
      case 38:// up
        if (snake.direction === "down") return;
        snake.direction = "up";
        break;
      case 39:// right
        if (snake.direction === "left") return;
        snake.direction = "right";
        break;
      case 40:// down
        if (snake.direction === "up") return;
        snake.direction = "down";
        break;
      default:
        console.log("wrong key");
    }
    snake.canTurn = 0;
  }
}

// table creation
function tableCreation() {
  if (snakeTable.innerHTML === "") {
    // main table
    for (var i = 0; i<table.boxes; i++) {
      var divElt = document.createElement("div");
      divElt.classList.add("box");
      snakeTable.appendChild(divElt);
    }
    // status bar
    var statusElt = document.createElement("div");
    statusElt.classList.add("status");
    snakeTable.appendChild(statusElt);
    scoreElt = document.createElement("span");
    scoreElt.classList.add("score");
    scoreElt.innerHTML = snake.score + " pts";
    statusElt.appendChild(scoreElt);
  }
}

// handle focus of the page
function checkPageFocus() {
  if (document.hasFocus()) {
    modul.classList.remove("hidden");
  }
  else {
    modul.classList.add("hidden");
  }
}
var checkPageInterval = setInterval(checkPageFocus, 300);

// swipe Showcase
$("document").ready(function() {
  $("body")
    .swipeDetector()
    .on("swipeLeft.sd swipeRight.sd swipeUp.sd swipeDown.sd", function(event) {
      if (event.type === "swipeLeft") {
        if (snake.direction === "right") return;
        snake.direction = "left";
      } else if (event.type === "swipeRight") {
        if (snake.direction === "left") return;
        snake.direction = "right";
      } else if (event.type === "swipeUp") {
        if (snake.direction === "down") return;
        snake.direction = "up";
      } else if (event.type === "swipeDown") {
        if (snake.direction === "up") return;
        snake.direction = "down";
      }
      snake.canTurn = 0;
    });
});

// swipe function --> credit: https://codepen.io/AlexEmashev/pen/BKgQdx?editors=0100
(function($) {
  $.fn.swipeDetector = function(options) {
    // States: 0 - no swipe, 1 - swipe started, 2 - swipe released
    var swipeState = 0;
    // Coordinates when swipe started
    var startX = 0;
    var startY = 0;
    // Distance of swipe
    var pixelOffsetX = 0;
    var pixelOffsetY = 0;
    // Target element which should detect swipes.
    var swipeTarget = this;
    var defaultSettings = {
      // Amount of pixels, when swipe don't count.
      swipeThreshold: 30,
      // Flag that indicates that plugin should react only on touch events.
      // Not on mouse events too.
      useOnlyTouch: true
    };

    // Initializer
    (function init() {
      options = $.extend(defaultSettings, options);
      // Support touch and mouse as well.
      swipeTarget.on("mousedown touchstart", swipeStart);
      $("html").on("mouseup touchend", swipeEnd);
      $("html").on("mousemove touchmove", swiping);
    })();

    function swipeStart(event) {
      if (options.useOnlyTouch && !event.originalEvent.touches) return;

      if (event.originalEvent.touches) event = event.originalEvent.touches[0];

      if (swipeState === 0) {
        swipeState = 1;
        startX = event.clientX;
        startY = event.clientY;
      }
    }

    function swipeEnd(event) {
      if (swipeState === 2) {
        swipeState = 0;

        if (
          Math.abs(pixelOffsetX) > Math.abs(pixelOffsetY) &&
          Math.abs(pixelOffsetX) > options.swipeThreshold
        ) {
          // Horizontal Swipe
          if (pixelOffsetX < 0) {
            swipeTarget.trigger($.Event("swipeLeft.sd"));
          } else {
            swipeTarget.trigger($.Event("swipeRight.sd"));
          }
        } else if (Math.abs(pixelOffsetY) > options.swipeThreshold) {
          // Vertical swipe
          if (pixelOffsetY < 0) {
            swipeTarget.trigger($.Event("swipeUp.sd"));
          } else {
            swipeTarget.trigger($.Event("swipeDown.sd"));
          }
        }
      }
    }

    function swiping(event) {
      // If swipe don't occuring, do nothing.
      if (swipeState !== 1) return;

      if (event.originalEvent.touches) {
        event = event.originalEvent.touches[0];
      }

      var swipeOffsetX = event.clientX - startX;
      var swipeOffsetY = event.clientY - startY;

      if (
        Math.abs(swipeOffsetX) > options.swipeThreshold ||
        Math.abs(swipeOffsetY) > options.swipeThreshold
      ) {
        swipeState = 2;
        pixelOffsetX = swipeOffsetX;
        pixelOffsetY = swipeOffsetY;
      }
    }

    return swipeTarget; // Return element available for chaining.
  };
})(jQuery);

// remove scroll for mobile IOS issue
function preventDefault(e){e.preventDefault();}
function disableScroll(){
    document.body.addEventListener('touchmove', preventDefault, { passive: false });
}
function enableScroll(){
    document.body.removeEventListener('touchmove', preventDefault, { passive: false });
}
disableScroll();

// https://www.theodinproject.com/courses/javascript-and-jquery/lessons/jquery-and-the-dom
            
          
!
999px

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