一个很精致(个人是这么认为的，尽管没有界面)的JavaScript贪吃蛇游戏解决思路
日期：2014-05-16 浏览次数：20538 次
一个很精致(个人是这么认为的，尽管没有界面)的JavaScript贪吃蛇游戏
一个很精致(个人是这么认为的，尽管没有界面)的JavaScript贪吃蛇游戏，支持ie8, firefox3.6，代码(可能很冗余)如下：
一个很精致(个人是这么认为的，尽管没有界面)的JavaScript贪吃蛇游戏，支持ie8, firefox3.6，代码(可能很冗余)如下：
- HTML code
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=gbk" />
<title>Snake </title>
<style type="text/css">
<!--
#prompt {
margin: auto;
width: 402px;
font-size: 12px;
color: green;
background-color: pink;
}
#prompt input {
font-size: 12px;
background-color: #555555;
cursor: pointer;
color: orange;
}
#snake {
border: 1px solid orange;
margin: auto;
position: relative;
width: 400px;
height: 300px;
}
#snake span {
float: left;
width: 8px;
height: 8px;
border: 1px solid #feffef;
background-color: #ffeeff;
}
#score {
color: blue;
float: right;
}
#state {
color: red;
}
#config {
width: 402px;
font-size: 12px;
background-color: lightblue;
margin: auto;
}
-->
</style>
<script type="text/javascript">
<!--
function $( id ) { // simplfied function document.getElmentById(string id)
return document.getElementById( id );
}
function change(id_suffix, color) {
$("s" + id_suffix).style.backgroundColor = color;
}
function get_random( maxnumber ) { // get a random number in [0, maxnumber)
return Math.floor( maxnumber*Math.random() );
}
// the snake's head's, body's, next point's, and other points' color
var headcolor="blue", bodycolor="green", nextcolor="red", bgcolor="#ffeeff";
// the snake's height, width, body, the flag if the snake can go through the wall, the next point's position
var line, row, snakebody, iscycled, nextpoint;
// the snake's moving speed, interval ID, direction, the flag if game is over, the flag if game is paused
var speed=500, ID=null, direction=100, gameover=false, ispaused=false, called=false;
function initialize_snake (l, r, ic) { // initialize the game before the game starts
if (arguments.length == 3) {
line = l;
row = r;
iscycled = ic;
}
snakebody = new Array(1); // the whole snake body
snakebody[0] = 0; // the head(snakebody[snakebody.length-1]) of snake is initialized to [0,0]
nextpoint = get_random(line*row-1)+1; // assign the next point's position a random position(different from head[0,0])
}
function create_map() {
var s = "", i, j;
for (i=0; i < line; i++) {
s += " <div>";
for (j=0; j < row; j++) {
if (i == 0 && j == 0) {
s += ' <span style="background-color:blue;" id="s' + (row*i + j) + '"> <\/span>';
} else {
s += ' <span id="s' + (row*i
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