?? 純dhtml版的貪食蛇.htm
字號:
<html>
<head>
<title>純DHTML版的貪食蛇</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body bgcolor="#FFFFFF"><table width=680 align=center border=0 cellpadding=0 cellspacing=0>
<tr>
<td align=center>
<br><H1>純DHTML版的貪食蛇</H1>
</td>
</tr></table>
<table width=680 align=center border=0 cellpadding=10 cellspacing=0><tr>
<td class=mid>
<HTML>
<br>
<HEAD>
<br>
<!------------------------------------------------------
<br>
What the hell is this:
<br>
=========
<br>
A very simple "Greedy Snake" game.
<br>
<br>
Copyright:
<br>
=========
<br>
Copyright by Lucifer Xie 2001-2002.All rights reserved!
<br>
Author Email: nsxy@163.net
<br>
<br>
Note:
<br>
=========
<br>
1.This version maybe not support IE4.0,because I don't know whether the "setInterval()" function can be used in IE4.X rightly.
<br>
So,you can replace it by "setTimeout()".
<br>
-------------------------------------------------------->
<br>
<TITLE>Pure DHTML Greedy Snake ver0.86</TITLE>
<br>
<style>
<br>
body {margin:0;}
<br>
td {height:20;width:20;font:16 Webdings;border:1 solid #99CCCC;}
<br>
#Arena {background:#99CCCC;border:1 groove black;}
<br>
</style>
<br>
</HEAD>
<br>
<BODY>
<br>
<table id=Arena cellspacing=0 cellpadding=0>
<br>
<script>
<br>
for (var i=0;i<21;i++){
<br>
document.write("<tr>");
<br>
for (var j=0;j<21;j++){
<br>
document.write("<td></td>");
<br>
}
<br>
document.write("</tr>");
<br>
}
<br>
</script>
<br>
</table>
<br>
<br>
<script>
<br>
var level=5;
<br>
var maxlevel=6
<br>
//方向
<br>
var dir="";
<br>
//用來判斷蛇身是否已經(jīng)完全展開
<br>
var startflag=0;
<br>
//蛇的數(shù)據(jù)數(shù)組
<br>
var bodyX=new Array(10,10,10,10,10)
<br>
var bodyY=new Array(10,10,10,10,10)
<br>
var headX,headY,lastX,lastY;
<br>
//初始長度為5
<br>
var length=5;
<br>
<br>
//顯示，只修改蛇頭和臨近蛇頭的蛇身以及蛇尾
<br>
function show(){
<br>
Arena.rows(bodyY[0]).cells(bodyX[0]).style.background="black";
<br>
Arena.rows(headY).cells(headX).style.background="green";
<br>
}
<br>
<br>
//產(chǎn)生一個蛇果
<br>
function spawn(){
<br>
while(1){
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with(Math){
<br>
x=round(random()*20);
<br>
y=round(random()*20);
<br>
}
<br>
if (Arena.rows(y).cells(x).style.background=="")
<br>
break;
<br>
}
<br>
Arena.rows(y).cells(x).style.background="red";
<br>
}
<br>
<br>
//判斷是否GameOver
<br>
function Lucifer(){
<br>
if (bodyX[0]<0||bodyX[0]>20||bodyY[0]<0||bodyY[0]>20)
<br>
return true;
<br>
if (Arena.rows(bodyY[0]).cells(bodyX[0]).style.background=="green")
<br>
return true;
<br>
return false;
<br>
}
<br>
<br>
function GameOver(){
<br>
clearInterval(gameInterval);
<br>
alert("Game Over!" + String.fromCharCode(13,13) + "Author Email:nsxy@163.net");
<br>
}
<br>
<br>
//根據(jù)方向移動一格
<br>
function move(){
<br>
if (dir=="") return;
<br>
if (startflag<5) startflag++;
<br>
headX=bodyX[0];headY=bodyY[0];
<br>
lastX=bodyX[length-1];lastY=bodyY[length-1];
<br>
//先改變蛇頭坐標
<br>
switch (dir){
<br>
case "u":
<br>
bodyY[0]--;
<br>
break;
<br>
case "d":
<br>
bodyY[0]++;
<br>
break;
<br>
case "l":
<br>
bodyX[0]--;
<br>
break;
<br>
case "r":
<br>
bodyX[0]++;
<br>
break;
<br>
}
<br>
//判斷蛇頭是否撞到障礙
<br>
if (Lucifer()){
<br>
GameOver();
<br>
return;
<br>
}
<br>
//如果吃到蛇果，蛇身增長，不擦除蛇尾，否則擦除蛇尾
<br>
if (Arena.rows(bodyY[0]).cells(bodyX[0]).style.background=="red"){
<br>
length++;
<br>
bodyX[length-1]=bodyX[length-2];
<br>
bodyY[length-1]=bodyY[length-2];
<br>
spawn();
<br>
}
<br>
else{
<br>
//執(zhí)行了5次才開始擦除蛇尾，即蛇身已經(jīng)完全伸展
<br>
if (startflag==5)
<br>
Arena.rows(lastY).cells(lastX).style.background="";
<br>
}
<br>
//改變蛇身坐標
<br>
for (i=length-1;i>1;i--){
<br>
bodyX[i]=bodyX[i-1];
<br>
bodyY[i]=bodyY[i-1];
<br>
}
<br>
bodyX[1]=headX;bodyY[1]=headY;
<br>
//顯示
<br>
show();
<br>
}
<br>
<br>
function document_onkeydown(){
<br>
switch (event.keyCode){
<br>
case 37:
<br>
if (bodyX[0]==bodyX[1]) dir="l";
<br>
break;
<br>
case 38:
<br>
if (bodyY[0]==bodyY[1]) dir="u";
<br>
break;
<br>
case 39:
<br>
if (bodyX[0]==bodyX[1]) dir="r";
<br>
break;
<br>
case 40:
<br>
if (bodyY[0]==bodyY[1]) dir="d";
<br>
break;
<br>
case 32:
<br>
clearInterval(gameInterval);
<br>
}
<br>
}
<br>
document.onkeydown=document_onkeydown;
<br>
<br>
/*主程序開始*/
<br>
//在初始位置顯示蛇頭
<br>
Arena.rows(bodyY[0]).cells(bodyX[0]).style.background="black";
<br>
//產(chǎn)生第一個蛇果
<br>
spawn();
<br>
//開始移動
<br>
gameInterval=setInterval("move()",(maxlevel-level+1)*50);
<br>
</script>
<br>
</BODY>
<br>
</HTML>
<br>
</td>
</tr>
</table>
</body>
</html>
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