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Snake Game 본문

JQuery

Snake Game

HiroDaegu 2022. 9. 14. 00:15
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<!DOCTYPE html>
<html lang="ko">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>SNAKE GAME</title>
    <link rel="stylesheet" href="style.css" />
    <script defer src="main.js"></script>
    <script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.1/jquery.js' integrity='sha512-CX7sDOp7UTAq+i1FYIlf9Uo27x4os+kGeoT7rgwvY+4dmjqV0IuE/Bl5hVsjnQPQiTOhAX1O2r2j5bjsFBvv/A==' crossorigin='anonymous'></script>
  </head>
  <body>
    <div class="container">
      <header class="title">
        <h2>JavaScript Snake Game</h2>
        <h3 id="score">Score:</h3>
      </header>
    </div>
    <div class="container">
      <section class="overlay">
        <div class="gameOverGrid"><h3 id="gameOver">You lose!</h3></div>
        <button class="gameOverGrid btn">Play</button>
      </section>
      <section id="gameBoard"></section>
    </div>
  </body>
</html>

 

html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,
h6,p,blockquote,pre,a,abbr,acronym,
address,big,cite,code,del,dfn,em,
img,ins,kbd,q,s,samp,small,strike,
strong,sub,sup,tt,var,b,u,i,center,
dl,dt,dd,ol,ul,li,fieldset,form,
label,legend,table,caption,tbody,tfoot,
thead,tr,th,td,article,aside,canvas,details,embed,
figure,figcaption,footer,header,hgroup,menu,
nav,output,ruby,section,summary,
time,mark,audio,video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
} /* HTML5 display-role reset for older browsers */
article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section {
    display: block;
}
body {
    line-height: 1;
}
ol,
ul {
    list-style: none;
}
blockquote,
q {
    quotes: none;
}
blockquote:before,
blockquote:after,
q:before,
q:after {
    content: "";
    content: none;
}
table {
    border-collapse: collapse;
    border-spacing: 0;
} /* Grid */
html {
    box-sizing: border-box;
}
*,
*:before,
*:after {
    box-sizing: inherit;
}
.container {
    margin: 0 auto;
    padding: 0 25px;
    text-align: center;
    position: relative;
}
.overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 25%;
    height: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 5%;
    display: flex;
    flex-flow: column;
    justify-content: center;
    align-items: center;
}
.title {
    margin-bottom: 15px;
}
#gameBoard,
.row {
    display: flex;
    flex-flow: row wrap;
}
#gameBoard {
    width: 600px;
    height: 600px;
    margin: 0 auto;
    border: 2px groove #000;
    box-sizing: content-box;
    background: #a8c899;
}
.gameOverGrid {
    margin: auto;
} /* Game */
.pixel {
    width: 15px;
    height: 15px;
    box-sizing: border-box;
}
.snakePixel {
    background-color: #000;
}
.foodPixel {
    background-color: cyan;
}
#gameOver {
    color: cornflowerblue;
    display: none;
}
.pixel:last-child {
    border-right: none;
}
.row:last-child .pixel {
    border-bottom: none;
} /* Style */
.btn {
    background: #3498db;
    background-image: -webkit-linear-gradient(top, #3498db, #2980b9);
    background-image: -moz-linear-gradient(top, #3498db, #2980b9);
    background-image: -ms-linear-gradient(top, #3498db, #2980b9);
    background-image: -o-linear-gradient(top, #3498db, #2980b9);
    background-image: linear-gradient(to bottom, #3498db, #2980b9);
    -webkit-border-radius: 6;
    -moz-border-radius: 6;
    border-radius: 6px;
    font-family: Arial;
    color: #ffffff;
    font-size: 20px;
    padding: 10px 20px 10px 20px;
    text-decoration: none;
    border: 0;
}
.btn:hover {
    background: #3cb0fd;
    background-image: -webkit-linear-gradient(top, #3cb0fd, #3498db);
    background-image: -moz-linear-gradient(top, #3cb0fd, #3498db);
    background-image: -ms-linear-gradient(top, #3cb0fd, #3498db);
    background-image: -o-linear-gradient(top, #3cb0fd, #3498db);
    background-image: linear-gradient(to bottom, #3cb0fd, #3498db);
    text-decoration: none;
} /* Typog */ /*! Typebase.less v0.1.0 | MIT License */ /* Setup */
html {
    /* Change default typefaces here */
    font-family: serif;
    font-size: 137.5%;
    -webkit-font-smoothing: antialiased;
} /* Copy & Lists */
p {
    line-height: 1.5rem;
    margin-top: 1.5rem;
    margin-bottom: 0;
}
ul,
ol {
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
}
ul li,
ol li {
    line-height: 1.5rem;
}
ul ul,
ol ul,
ul ol,
ol ol {
    margin-top: 0;
    margin-bottom: 0;
}
blockquote {
    line-height: 1.5rem;
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
} /* Headings */
h1,
h2,
h3,
h4,
h5,
h6 {
    /* Change heading typefaces here */
    font-family: sans-serif;
    margin-top: 1.5rem;
    margin-bottom: 0;
    line-height: 1.5rem;
}
h1 {
    font-size: 4.242rem;
    line-height: 4.5rem;
    margin-top: 3rem;
}
h2 {
    font-size: 2.828rem;
    line-height: 3rem;
    margin-top: 3rem;
}
h3 {
    font-size: 1.414rem;
}
h4 {
    font-size: 0.707rem;
}
h5 {
    font-size: 0.4713333333333333rem;
}
h6 {
    font-size: 0.3535rem;
} /* Tables */
table {
    margin-top: 1.5rem;
    border-spacing: 0px;
    border-collapse: collapse;
}
table td,
table th {
    padding: 0;
    line-height: 33px;
} /* Code blocks */
code {
    vertical-align: bottom;
} /* Leading paragraph text */
.lead {
    font-size: 1.414rem;
} /* Hug the block above you */
.hug {
    margin-top: 0;
}
/*jslint browser: true*/
/*global $, jQuery, alert*/
var gameBoardSize = 40;
var gamePoints = 0;
var gameSpeed = 100;
$(document).ready(function () {
    console.log("Ready Player One!");
    createBoard();
    $(".btn").click(function() {
        startGame();
    });
});
var Snake = {
    position: [[20, 20], [20, 19], [20, 18]], // snake start position
    size: 3,
    direction: "r",
    alive: true
}
var Food = {
    position: [],
    present: false
}
function createBoard() {
    $("#gameBoard").empty();
    var size = gameBoardSize;
    
    for (i = 0; i < size; i++) {
        $("#gameBoard").append('<div class="row"></div>');
        for (j = 0; j < size; j++) {
            $(".row:last-child").append('<div class="pixel"></div>');
        }
    }
}
function moveSnake() {
  var head = Snake.position[0].slice();
  switch (Snake.direction) {
    case 'r':
      head[1] += 1;
      break;
    case 'l':
      head[1] -= 1;
      break;
    case 'u':
      head[0] -= 1;
      break;
    case 'd':
      head[0] += 1;
      break;
  }
  // check after head is moved
  if (alive(head)) {
    // draw head
    $(".row:nth-child(" + head[0] + ") > .pixel:nth-child(" + head[1] + ")").addClass("snakePixel");
    // draw rest of body loop
    for (var i = 0; i < Snake.size; i++) {
      $(".row:nth-child(" + Snake.position[i][0] + ") > .pixel:nth-child(" + Snake.position[i][1] + ")").addClass("snakePixel");
    }
    // if head touches food
    if (head.every(function(e,i) {
      return e === Food.position[i];
    })) {
      Snake.size++;
      Food.present = false;
      gamePoints += 5;
      $(".row:nth-child(" + Food.position[0] + ") > .pixel:nth-child(" + Food.position[1] + ")").removeClass("foodPixel");
      $("#score").html("Score: "+gamePoints)
        if (gamePoints % 16 == 0 && gameSpeed > 10) { gameSpeed -= 5; };
    } else {
      $(".row:nth-child(" + Snake.position[Snake.size-1][0] + ") > .pixel:nth-child(" + Snake.position[Snake.size-1][1] + ")").removeClass("snakePixel");
      Snake.position.pop();
    }
    Snake.position.unshift(head);
  } else {
    gameOver();
  }
}
function generateFood() {
    if (Food.present === false) {
        Food.position = [Math.floor((Math.random()*40) + 1), Math.floor((Math.random()*40) + 1)]
        Food.present = true;
        console.log("Food at: "+Food.position);
        $(".row:nth-child(" + Food.position[0] + ") > .pixel:nth-child(" + Food.position[1] + ")").addClass("foodPixel");
    }
}
function keyPress() {
    $(document).one("keydown", function(key) {
        switch(key.which) {
            case 37: // left arrow
                if (Snake.direction != "r") {Snake.direction = "l";}
                break;
            case 38: // up arrow
                if (Snake.direction != "d") {Snake.direction = "u";}
                break;
            case 39: // right arrow
                if (Snake.direction != "l") {Snake.direction = "r";}
                break;
            case 40: // down arrow
                if (Snake.direction != "u") {Snake.direction = "d";}
                break;
        }
    });
}
function gameLoop() {
    setTimeout(function() {
        keyPress();
        generateFood();
        moveSnake();
        if (Snake.alive) {gameLoop(); }
    }, gameSpeed);
}
function alive(head) {
  // head check
  if (head[0] < 1 || head[0] > 40 || head[1] < 1 || head[1] > 40) {
    return false;
  }
  // wall collision
  if (Snake.position[0][0] < 1 || Snake.position[0][0] > 40 || Snake.position[0][1] < 1 || Snake.position[0][1] > 40) {
    return false;
  }
  // self collision
  for (var i = 1; i < Snake.size; i++) {
    if ((Snake.position[0]).every(function(element,index) {
      return element === Snake.position[i][index];
    })) {
      return false;
    }
  }
  return true;
}
function gameOver() {
    Snake.alive = false;
    console.log("Game Over!");
    $(".overlay").show();
    $("#gameOver").show();
    var blink = function() {
        $(".row:nth-child(" + Snake.position[0][0] + ") > .pixel:nth-child(" + Snake.position[0][1] + ")").toggleClass("snakePixel");
    }
    
    var i = 0;
    function blinkLoop() {
        blink();
        setTimeout(function() {
            i++;
            if (i < 10) { blinkLoop();}
        }, 400);
    }
    blinkLoop();
}
function startGame() {
    // reset game settings
    Snake.size = 3;
    Snake.position = [[20,20],[20,19],[20,18]];
    Snake.direction = "r";
    Snake.alive = true;
    gameSpeed = 100;
    gamePoints = 0;
    Food.present = false;
    
    // start game
    createBoard();
    $(".overlay").hide();
    gameLoop();
}
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