如何用原生js写出文字版贪食蛇（甚至连css也不用）？

如题，求完整代码，写在html中。先感谢了。

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2条回答默认最新

CSDN专家-天际的海浪 2022-01-15 23:55

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我以前写的一个面向对象的贪吃蛇游戏

以前写的一个面向对象的贪吃蛇游戏_jslang的专栏-CSDN博客贪吃蛇 #mapbox { font-family: 宋体; font-size: 17px; line-height:100%; height:360; width:430;}/////////////////////// 贪吃蛇 //// OO+TextBox //// 程序作者:海浪 ///////////////////////

https://blog.csdn.net/jslang/article/details/38796489?spm=1001.2014.3001.5502

你题目的解答代码如下：

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title> 贪吃蛇 </title>
<style>
#mapbox {
  font-family: 宋体; font-size: 17px; line-height:100%;
  height:360; width:430;
}
</style>
 
<script language="JavaScript">
/*
//     贪吃蛇      //
//   OO+TextBox    //
//  程序作者:海浪  //
*/
 
var map;
var gott;
 
function play()
{
  clearInterval(gott);
  map = new mapClass(25,20);
  document.onkeydown = keydown;
  gott = setInterval("map.snake.go()",150);
}
 
function keydown(e)
{
  e = e||event;
  switch (e.keyCode)
  {
    case 38: map.snake.refx(0); break;
    case 39: map.snake.refx(1); break;
    case 40: map.snake.refx(2); break;
    case 37: map.snake.refx(3); break;
    case 17: map.snake.stoporrun(); break;
  }
}
 
 
 
function mapClass(x,y)
{
  this.x = x;
  this.y = y;
  this.sq = "■";
  this.sk = "　";
  this.marr = [];
  for(var iy=0; iy<this.y; iy++)
  {
    this.marr[iy] = [];
    for(var ix=0; ix<this.x; ix++)
      this.marr[iy][ix] = (ix==0||iy==0||ix==this.x-1||iy==this.y-1)?this.sq:this.sk;
  }
  this.snake = new snakeClass(this);
  this.bean = new beanClass(this);
  this.bean.newbean();
  this.bean.addn();
}
 
mapClass.prototype.write = function()
{
  var str = "";
  for(var ii=0; ii<this.y; ii++)
    str += this.marr[ii].join("")+"<br />";
  document.getElementById("mapbox").innerHTML = str;
}
 
mapClass.prototype.rexy = function(x,y,s)
{
  var str = s || this.sk;
  this.marr[y][x] = str;
}
 
mapClass.prototype.jcxy = function(x,y,s)
{
  var str = s || this.sk;
  return this.marr[y][x] == str;
}
 
 
 
function snakeClass(po)
{
  this.parent = po;
  this.mt = "●";
  this.boarr = [];
  this.bolength = 4;
  this.fang = 1;
  this.fangtt = 1;
  this.stop = false;
  this.boarr[0] = this.addbody(3,5);
  this.parent.rexy(this.boarr[0].x,this.boarr[0].y,this.mt);
}
 
snakeClass.prototype.go = function()
{
  if(this.stop) return;
  this.fang = this.fangtt;
  var x = this.boarr[0].x + [0,1,0,-1][this.fang];
  var y = this.boarr[0].y + [-1,0,1,0][this.fang];
  var chi = this.parent.jcxy(x,y,this.parent.bean.mt);
  if(!this.parent.jcxy(x,y) && !chi)
  {
    clearInterval(gott);
    alert("Game Over!");
    return;
  }
  if(chi)
  {
    this.bolength++;
    this.parent.bean.addn();
    this.parent.bean.newbean();
  }
  this.parent.rexy(x,y,this.mt);
  this.boarr = [].concat(this.addbody(x,y),this.boarr);
  if(this.boarr.length>this.bolength)
  {
    var tb = this.boarr.pop();
    this.parent.rexy(tb.x,tb.y);
  }
  this.parent.write();
}
 
snakeClass.prototype.addbody = function(x,y)
{
  return { x:x, y:y };
}
 
snakeClass.prototype.refx = function(n)
{
  if(Math.abs(this.fang-n)!=2)
    this.fangtt=n;
}
 
snakeClass.prototype.stoporrun = function()
{
  this.stop = !this.stop;
}
 
 
 
function beanClass(po)
{
  this.parent = po;
  this.mt = "◎";
  this.sne = -100;
}
 
beanClass.prototype.addn = function()
{
  this.sne+=100;
  document.getElementById("fan").innerHTML = this.sne;
}
 
beanClass.prototype.newbean = function()
{
  var x = Math.floor(Math.random()*(this.parent.x-2))+1;
  var y = Math.floor(Math.random()*(this.parent.y-2))+1;
  if(this.parent.jcxy(x,y))
    this.parent.rexy(x,y,this.mt);
  else
    this.newbean();
}
</script>
</head>
 
<body>
<center>
<h2>贪吃蛇</h2><hr>
<div id="mapbox"></div>
<input type="button" value="开始" onclick="play()"> 得分：<span id="fan"></span>
<hr>
程序作者:海浪
</center>
</body>
</html>