***游戏类***射击游戏：a就是大炮
把下列代码加到网页的<body></body>标签之间 从google下载我的照片管理软件<!--网页特效代码由http://js.jojoo.net提供！-->
<html>
<body bgcolor="#fef4d9" onload="document.forms.guess.focus(); document.forms.guess.select()">
<script language="javascript">
// ---- make array
function makearray( n){ this.length = n;
for (var i = 1; i <= n; i++) {
this = 0
}
return this
}
// ----- poor man's random number
var d0 = new date();
var r0 = d0.getseconds();
function poor_rand(){
d1 = new date();
r0 = (r0 * r0 + r0 + d1.getseconds()) % 3721 ;
return r0 % width_n;
}
// ---- parameters of game
var height_n = 8;
var width_n =5;
// ---- state of game
var enemy = new makearray( width_n); // enemy positions
var wtime; // wait time
var score; // points
var gameover; // in case of gameover set to true
// ----- make the battlefield.
document.write( "<form name='fm1'>");
document.write( "<input type='text' name='message' size=20>");
document.write( "</form>");
document.write( "<form name='fm2'><table>");
for( var i=0; i<height_n; i++){
document.write( "<tr>");
for( var j=0;j<width_n; j++){
document.write( "<td><center><input type='radio'></center></td>");
}
document.write( "</tr>");
}
document.write( "<tr>");
for( var j=0;j<width_n; j++){
document.write( "<td><input type='button' value='a' onclick='fire("
+ j + ")'></td>");
}
document.write( "</tr>");
document.write( "</table>");
document.write( "<input type='button' value='start' onclick='game_start()'>");
document.write( "</form>");
// ----- game main timer event
// ----- enemy come one step
function come(){
var n = poor_rand();
document.fm2.elements[ width_n * enemy + n].checked = true;
enemy++;
if( enemy < height_n){
settimeout("come()", wtime);
}else{
gameover = true;
document.fm1.message.value ="game over:" + score ;
}
}
// ----- fire the n th beam
function fire( n){
if( gameover ) return;
for( var i=0; i<enemy; i++){ // clear enemy
document.fm2.elements[ width_n * i + n].checked = false;
}
score += enemy[ n+1];
document.fm1.message.value = "points:" + score;
enemy[ n+1] = 0;
if( wtime > 50){ wtime -= 10};
}
// ---- initialize & start game
function game_start(){
for( var n=0; n<width_n; n++){
for( var i=0; i<enemy; i++){
document.fm2.elements[ width_n * i + n].checked = false;
}
enemy = 0;
}
wtime = 150;
score = 0;
gameover = false;
document.fm1.message.value = "points:" + score;
settimeout("come()", wtime);
}
// -->
</script>
</bady></html>
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