1.代码：
<!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=utf-8" />
<script type="text/javascript">
window.onload = function(){
//alert("hello world!");
Snakee();
}
Snakee = function (){
var stopTag = true;
var i = 0;var headNode = null;
var snake = new Array(400);
var size = 2;
var nextIndex = 0 ;
snake[0]=21;
snake[1]=22;
var tagArr = new Array(400);
var headIndex = 0 ;
var tailIndex = 0 ;
var direction = 0 ;//右
var food = 35;
var speed = 1000;
var score = 0 ;
var oTime = null;
var gameover = false;
function getHeadIndex(){
headIndex = snake[size-1];
}
function getTailIndex(){
tailIndex = snake[0];
}
function isFood(){
if(next()==food)return true;
else return false;
}
function generateFood(){
for(i=0;i<400;i++)tagArr[i]=0;
for(i=0;i<size;i++)tagArr[snake[i]]=1;
var t = Math.round(Math.random()*(400-size-76)-0.5);
var count = 0 ;
for(i=0;i<400;i++){
if(tagArr[i]==0&&Math.floor(i/20)!=0&&Math.floor(i/20)!=19&&Math.floor(i%20)!=0&&Math.floor(i%20)!=19){
if(t==count){
food=i;
//return i;
}
count++;
}
}
}
function next(){
switch(direction){
case 0:
nextIndex = snake[size-1]+1;
break;
case 1:
nextIndex = snake[size-1]+20;
break;
case 2:
nextIndex = snake[size-1]-1;
break;
case 3:
nextIndex = snake[size-1]-20;
break;
}
}
function eat(){
next();
snake[size]=nextIndex;
size++;
drawScore(++score);
generateFood();
}
function forword(){
//eat();
next();
if(nextIndex==food){
eat();
//alert("");
}
else{
for(i=0;i<size;i++)
{
snake[i]=snake[i+1];
}
snake[size-1]=nextIndex;
}
}
function leftMove(){
if(direction!=2&&direction!=0)direction = 2 ;
}
function rightMove(){
if(direction!=2&&direction!=0)direction = 0 ;
}
function upMove(){
if(direction!=3&&direction!=1)direction = 3 ;
}
function downMove(){
if(direction!=3&&direction!=1)direction = 1 ;
}
function isExit(){
next();
var i = 0 ;
getHeadIndex();
var tag = false;
for(;i<size-1;i++){
if(headIndex==snake[i])tag=true;
}
if(Math.floor(nextIndex/20)<=0||Math.floor(nextIndex/20)>=19||Math.floor(nextIndex%20)<=0||Math.floor(nextIndex%20)>=19||tag)
{
//alert("GAVE OVER!!!");
gameover=true;
stopTag = true;
document.getElementById("stopBtn").disabled=true;
Test();
snake[0]=21;
snake[1]=22;
size = 2 ;
}
}
function stopGame(){
stopTag = true;
}
function startGame(){
stopTag = false;
}
function drawPanel(){
var contentHtml = "";
var i = 0 ;var j = 0 ;
var colorStr="";
contentHtml+="<div id='mainPanel' style='top: 10px;position:absolute ; left: 30%;200px;height:200px;'>";
contentHtml+="<div id='tooldiv'><input id='stopBtn' type='button' value='开始' style='float:left'></input><input id='restartBtn' type='button' value='重置' style='float:left'></input><select id='speedBtn'><OPTION VALUE='1000'>初级1</OPTION><OPTION VALUE='800'>初级2</OPTION><OPTION VALUE='600'>初级3</OPTION><OPTION VALUE='400'>中级1</OPTION><OPTION VALUE='200'>中级2</OPTION><OPTION VALUE='100'>中级3</OPTION><OPTION VALUE='80'>高级1</OPTION><OPTION VALUE='50'>高级2</OPTION><OPTION VALUE='20'>高级3</OPTION></select><input id='scoreInput' readOnly='true' type='text' style='border:0px;50px' value='得分:0'></input></div>";
contentHtml+="<div id='showPanel'>";
for(;i<20;i++){
j = 0;
if(i==0||i==19||j==0||j==19)colorStr="black";
else colorStr="#00ffff";
contentHtml+= "<div id='"+(20*i+j)+"' style='position: relative ;clear:left ;float:left;8px;height:8px;background-color:"+colorStr+";margin:1px 1px 1px 1px;'></div>";
for(j = 1;j<20;j++){
if(i==0||i==19||j==0||j==19)colorStr="black";
else colorStr="#00ffff";
contentHtml += "<div id='"+(20*i+j)+"' style='position: relative ;float:left;8px;height:8px;background-color:"+colorStr+";margin:1px 1px 1px 1px'></div>";
}
}
contentHtml += "</div></div>";
document.write(contentHtml);
var stopBtn = document.getElementById("stopBtn");
stopBtn.onclick=function(){
if(stopBtn.value=='开始'){
startGame();
stopBtn.value = '暂停';
}else{
stopGame();
stopBtn.value = '开始';
}
};
var restartBtn = document.getElementById("restartBtn");
restartBtn.onclick=function(){
window.location.reload();
};
var speedBtn = document.getElementById("speedBtn");
speedBtn.onchange=function(){
speed=speedBtn.value;
speedBtn.blur();
window.focus();
replay();
}
window.onkeypress=_onkeypress;
window.onkeydown=_onkeydown;
}http://www.huiyi8.com/tishiyin/
function drawScore(score){
document.getElementById("scoreInput").value=('得分:'+score);
}提示音
function drawDefaultSnake(){
for(i=0;i<size-1;i++){
headNode = document.getElementById(""+snake[i]);
headNode.style.backgroundColor = "blue";
}
headNode = document.getElementById(""+snake[size-1]);
headNode.style.backgroundColor = "red";
}
function clearSnake(){
for(i=0;i<size;i++){
headNode = document.getElementById(""+snake[i]);
headNode.style.backgroundColor = "#00ffff";
}
}
function drawFood(){
headNode = document.getElementById(""+food);
headNode.style.backgroundColor = "yellow";
}
function flashFood(){
//alert(r+";"+g+";"+b);
var foodTimer = null;
if(foodTimer!=null)clearInterval(foodTimer);
foodTimer = setInterval(function(){
if(gameover)clearInterval(foodTimer);
else{
if(!stopTag){
headNode = document.getElementById(""+food);
headNode.style.backgroundColor = "#00ffff";
generateFood();
}
}
},8000);
var fTimer = null;
if(fTimer!=null)clearInterval(fTimer);
fTimer = setInterval(function(){
if(gameover)clearInterval(fTimer);
else{
if(!stopTag){
headNode = document.getElementById(""+food);
r=Math.round(Math.random()*255);
g=Math.round(Math.random()*255);
b=Math.round(Math.random()*255);
headNode.style.backgroundColor = "rgb("+r+", "+g+", "+b+")";
}
}
},400);
}
function tailDraw(){
getTailIndex();
headNode = document.getElementById(""+tailIndex);
headNode.style.backgroundColor = "#00ffff";
}
function headDraw(){