<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
<div id="box"
style="width: 252px; font: 25px/25px 宋体; background: #000; color: #9f9; border: #999 20px ridge; text-shadow: 2px 3px 1px #0f0;"></div>
<script>
var map = eval("[" + Array(23).join("0x801,") + "0xfff]");
var tatris = [ [ 0x6600 ], [ 0x2222, 0xf00 ], [ 0xc600, 0x2640 ],
[ 0x6c00, 0x4620 ], [ 0x4460, 0x2e0, 0x6220, 0x740 ],
[ 0x2260, 0xe20, 0x6440, 0x4700 ],
[ 0x2620, 0x720, 0x2320, 0x2700 ] ];
var keycom = {
"38" : "rotate(1)",
"40" : "down()",
"37" : "move(2,1)",
"39" : "move(0.5,-1)"
};
var dia, pos, bak, run;
function start() {
dia = tatris[~~(Math.random() * 7)];
bak = pos = {
fk : [],
y : 0,
x : 4,
s : ~~(Math.random() * 4)
};
rotate(0);
}
function over() {
document.onkeydown = null;
clearInterval(run);
alert("GAME OVER");
}
function update(t) {
bak = {
fk : pos.fk.slice(0),
y : pos.y,
x : pos.x,
s : pos.s
};
if (t)
return;
for (var i = 0, a2 = ""; i < 22; i++)
a2 += map[i].toString(2).slice(1, -1) + "<br/>";
for (var i = 0, n; i < 4; i++)
if (/([^0]+)/.test(bak.fk[i].toString(2)
.replace(/1/g, "\u25a1")))
a2 = a2.substr(0, n = (bak.y + i + 1) * 15
- RegExp.$_.length - 4)
+ RegExp.$1 + a2.slice(n + RegExp.$1.length);
document.getElementById("box").innerHTML = a2.replace(/1/g,
"\u25a0").replace(/0/g, "\u3000");
}
function is() {
for (var i = 0; i < 4; i++)
if ((pos.fk[i] & map[pos.y + i]) != 0)
return pos = bak;
}
function rotate(r) {
var f = dia[pos.s = (pos.s + r) % dia.length];
for (var i = 0; i < 4; i++)
pos.fk[i] = (f >> (12 - i * 4) & 15) << pos.x;
update(is());
}
function down() {
++pos.y;
if (is()) {
for (var i = 0; i < 4 && pos.y + i < 22; i++)
if ((map[pos.y + i] |= pos.fk[i]) == 0xfff)
map.splice(pos.y + i, 1), map.unshift(0x801);
if (map[1] != 0x801)
return over();
start();
}
update();
}
function move(t, k) {
pos.x += k;
for (var i = 0; i < 4; i++)
pos.fk[i] *= t;
update(is());
}
document.onkeydown = function(e) {
eval(keycom[(e ? e : event).keyCode]);
};
start();
run = setInterval("down()", 400);
</script>
</body>
</html>
