本文实例为大家分享了JS实现简单贪吃蛇游戏的具体代码，供大家参考，具体内容如下

1、使用语言 HTML+CSS+JavaScript

2、使用工具 visual studio code

3、GitHub项目地址：贪吃蛇

4、项目运行截图：

5、项目功能分析：主要使用数组来存储蛇的位置，地图和蛇都是一个二维数组，对于有蛇的地方，地图的CSS就会发生改变，同时添加了添加了一个音乐播放按钮，通过CSS动画实现旋转。

6、项目代码：(项目代码有详细的注释)

snake.html

eatSnake

*{

margin:0;

padding:0;

border: 0px;

}

body{

background: #444;

}

table{

border-collapse:collapse;

overflow: hidden;

border:1px solid #ddd;

margin:10px auto 10px auto;

}

td{

display: table-cell;

width:20px;

height:20px;

background: #fff;

border:1px #eeeeee solid;

}

.snake{

background: #3388ee;

}

.notsnake{

background: #fff;

}

.food{

background: #33aa33;

}

.snake_head{

background: #dd4444;

}

.notice{

width:450px;

text-align: center;

margin:50px auto;

color:#fff;

font-size: 14px;

}

提示：空格键控制开始/ 暂停，方向键控制蛇的移动方向，F5刷新

snake.js

/*

* @Author: CSU_XZY

* @Date: 2020-10-17 12:38:26

* @LastEditors: CSU_XZY

* @LastEditTime: 2020-10-18 22:40:24

* @FilePath: \第二天\snake\snake.js

* @Description: just to play

*/

window.onload = function(){

var snake = function(width,height,snakeId,speed){

this.width = width || 10;

this.height = height || 10;

this.snakeId = snakeId || "snake";

this.goX = 0;

this.goY = 0;

this.speed = this.oldSpeed = speed || 10;

this.Grid = []; //存放td的二维数组

this.snakeGrid = []; //存放蛇的数组

this.foodGrid = [];

this.snakeTimer = null;

this.derectkey = 39;

this.stop = true;

this.init();

document.getElementById("myAudio").play();

box.style.animationPlayState = 'running'

}

snake.prototype = {

//创建二维数组

multiArray : function(m , n)

{

var array = new Array(m); //长

for(let i = 0; i < m; i++)

{

array[i] = new Array(n); //宽

}

return array;

},

//函数修正this

bind : function(fn,context)

{

return function(){

return fn.apply(context,arguments);

}

},

//移动的主函数

move:function(){

var _this = this;

if(_this.snakeTimer){clearInterval(_this.snakeTimer);}

_this.snakeTimer = setInterval(_this.bind(_this.main,_this),Math.floor(3000/this.speed));

},

//重来

reset()

{

this.goX = 0;

this.goY = 0;

this.speed = this.oldSpeed;

this.derectkey = 39;

this.stop = true;

this.init();

},

//确定键盘事件

keyDown : function(e)

{

var e = e || window.event;

var keycode = e?e.keyCode:0;

if(keycode == 116 )

window.location.reload();

if(keycode == 32)

{

if(this.stop)

{

this.move();

this.stop = false;

}

else{

if(this.snakeTimer)

clearInterval(this.snakeTimer);

this.stop = true;

}

}

if(keycode>=37 && keycode <= 40)

{

if(!this.stop)

this.derectkey = keycode;

}

return false;

},

//创建地图

creatMap : function()

{

var table = document.createElement("table");

var tbody = document.createElement("tbody");

for(let i = 0; i < this.width; i++)

{

var tr = document.createElement("tr");

for(let j = 0; j < this.height; j++)

{

var td = document.createElement("td");

this.Grid[i][j] = tr.appendChild(td);

}

tbody.appendChild(tr);

}

table.appendChild(tbody);

table.id = this.snakeId;

document.body.appendChild(table);

},

//产生随机点

randomPoint : function(initX,initY,endX,endY)

{

var p = []; //用来存放产生的随机点的数组

var initX = initX || 0;

var initY = initY || 0;

var endX = endX || this.width;

var endY = endY || this.height;

p[0] = Math.floor(Math.random()*(endX - initX)) + Math.floor(initX);

p[1] = Math.floor(Math.random()*(endY - initY)) + Math.floor(initY)

return p;

},

//初始化食物的位置

initFood : function()

{

this.foodGrid = this.randomPoint();

if(this.isInSnake(this.foodGrid))

{

this.initFood();

return false;

}

this.Grid[this.foodGrid[0]][this.foodGrid[1]].className = "food";

},

//判断点是否在蛇身上

isInSnake : function(point,pos)

{

var snakeGrid = this.snakeGrid;

if(point instanceof Array)

{

let n = snakeGrid.length;

for(let i = pos || 0; i < n; i++)

{

if(point[0] == snakeGrid[i][0] && point[1] == snakeGrid[i][1])

return true;

}

}

return false;

},

//给蛇涂颜色

paintSnake : function(){

var snakeGrid = this.snakeGrid;

for(let i = 0; i < snakeGrid.length; i++)

{

this.Grid[snakeGrid[i][0]][snakeGrid[i][1]].className = "snake_body";

}

},

//初始化蛇的位置

initSnake : function()

{

this.snakeGrid = [];

this.snakeGrid.push([1,3]);

this.snakeGrid.push([1,2]);

this.snakeGrid.push([1,1]);

this.paintSnake();

this.Grid[this.snakeGrid[0][0]][this.snakeGrid[0][1]].className = "snake_head";

this.Grid[this.snakeGrid[this.snakeGrid.length-1][0]][this.snakeGrid[this.snakeGrid.length-1][1]].className = "snake_tail";

},

//判断蛇是否撞墙

isInWall : function(point){

if(point instanceof Array){

if(point[0] < 0 || point[0] > this.width1 - 1 || point[1] < 0 || point[1] > this.height - 1)

return true;

}

return false;

},

//初始化条件

//控制函数运行的主函数

main : function(){

var snakeGrid = this.snakeGrid;

var temp = snakeGrid[snakeGrid.length-1],

isEnd = false;

headX = snakeGrid[0][0];

headY = snakeGrid[0][1];

msg = "";

switch(this.derectkey)

{

case 37:

if(this.goY!=1){this.goY=-1;this.goX=0} //防止控制蛇往相反反方向走

break;

case 38:

if(this.goX!=1){this.goX=-1;this.goY=0}

break;

case 39:

if(this.goY!=-1){this.goY=1;this.goX=0}

break;

case 40:

if(this.goX!=-1){this.goX=1;this.goY=0}

}

headX += this.goX;

headY += this.goY;

if(headX == this.foodGrid[0] && headY == this.foodGrid[1])

{

this.snakeGrid.unshift(this.foodGrid);

this.initFood();

if(this.snakeGrid.length>4){ //控制蛇加速

if(this.snakeGrid.length==5){

this.speed += 5;

}

else if(this.snakeGrid.length==10){

this.speed += 3;

}

else if(this.snakeGrid.length==20){

this.speed += 3;

}

else if(this.snakeGrid.length==30){

this.speed += 3;

}

this.move();

}

}

else

{

for(var i=this.snakeGrid.length-1;i>0;i--){

this.snakeGrid[i] = this.snakeGrid[i-1] ;

}

this.snakeGrid[0] = [headX,headY];

if(this.isInSnake(this.snakeGrid[0],1)){

isEnd=true;

msg = "哈皮，吃到自己啦！！";

}

//判断是否撞墙

else if(this.isInWall(this.snakeGrid[0])){

isEnd =true;

msg = "撒比伟哥，撞墙了！！";

}

if(isEnd)

{

if(this.snakeTimer)

clearInterval(this.snakeTimer);

var score;

let len = this.snakeGrid.length;

if(len <= 5)

score = len-3;

else if(len>5 && len<=10)

{

score = 2 + 2*(len-5)

}

else if(len>10 && len <= 20)

score = 12 + 3*(len-10);

else

score = 27 + 5*(len - 15);

if(confirm(msg+"你的分数是："+score+"！ 是否重新开始？")){

this.reset();

}

return false;

}

this.Grid[temp[0]][temp[1]].className = "notSnake";

}

this.paintSnake();

this.Grid[headX][headY].className = "snake_head";

this.Grid[this.snakeGrid[this.snakeGrid.length-1][0]][this.snakeGrid[this.snakeGrid.length-1][1]].className = "snake_tail";

},

init : function(){

var _this = this;

snake_id = document.getElementById(_this.snakeId)||0 ;

if(snake_id){

document.body.removeChild(snake_id);

}

_this.Grid = _this.multiArray(_this.width,_this.height);

_this.creatMap();

_this.initSnake();

_this.initFood();

document.onkeydown = _this.bind(_this.keyDown,_this);

}

}

new snake(20,20,"snake",10);

}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。