javascript游戏代码

isIE4 = (document.all && !document.getElementById) ? true : false;
isIE5 = (document.all && document.getElementById) ? true : false;
isNS6 = (!document.all && document.getElementById) ? true : false;
// set touch = 1 if it is touching an enemy
if (difX > (-1 * givesize('box', 'x')) && difX < givesize(enemy, 'x') && difY > (-1 * givesize('box', 'y')) && difY < givesize(enemy, 'y'))
var curX, curY, curX2, curY2, boxX, boxY, moving=0, touch=0;
var gametime=0, started=0, speed;
var starttime, endtime, finaltime=0; //pass finaltime to popup window to ask for initials
}
else if (dimension == 'x')
{
if (isNS4) divsize = yers[divname].clip.width;
else if (isIE4 || isIE5) divsize = document.all(divname).style.pixelWidth;
else if (gametime >= 100 && gametime < 200) speed = 60;
else if (gametime >= 200 && gametime < 300) speed = 40;
else if (gametime >= 300 && gametime < 400) speed = 30;
movenemy(0,-10,12);
movenemy(1,-12,-20);
movenemy(2,15,-13);
movenemy(3,17,11);
setTimeout(movenemies,speed);
}
function start(e)
{
if (d == 0)
{
movenemies(); startclock(); started = 1;
}
curX = (isNS4 || isNS6) ? e.pageX : window.event.x ;
curY = (isNS4 || isNS6) ? e.pageY : window.event.y ;
var enemyy = givesize(enemy, 'y');
if (giveposX(enemy) >= (450 - enemyx) || giveposX(enemy) <= 0)
{
enemyxdir[num] = -1 * enemyxdir[num];
else if (isNS6) divsize = parseInt(document.getElementById(divname).style.width + "");
}
return divsize;
}
// check to see if 'box' is touching 'enemy1'
{
if (isNS4) var posTop = yers[divname].top;
else if (isIE4 || isIE5)
var posTop = document.all(divname).style.pixelTop;
else if (isNS6)
function checktouching(num)
{
var enemy = "enemy" + num + ""
var difX = giveposX('box') - giveposX(enemy) - 0; // -0 converts to integer
var difY = giveposY('box') - giveposY(enemy) - 0;
}
function giveposX(divname)
{
if (isNS4) var posLeft = yers[divname].left;
else if (isIE4 || isIE5)
var posLeft = document.all(divname).style.pixelLeft;
var enemyxdir = new Array(1,1,1,1);
var enemyydir = new Array(1,1,1,1);
if (isNS4 || isNS6)
{
document.captureEvents(Event.MOUSEUP|Event.MOUSEDOWN|Event.MOUSEMOVE);
else if (gametime >= 400 && gametime < 500) speed = 20;
else speed = 10;
// window.status = "speed: " + speed + " gametime: " + gametime;
else if (isNS6)
var posLeft = parseInt(document.getElementById(divname).style.left + "");
return posLeft;
}
function giveposY(divname)
}
if (giveposY(enemy) >= (450 - enemyy) || giveposY(enemy) <= 0)
{
enemyydir[num] = -1 * enemyydir[num];
}
var newposx = giveposX(enemy) + (step_x*enemyxdir[num]) + 0;
}
function endclock()
{
var today = new Date(); endtime = today.getTime();
}
function calctime()
{
var time = (endtime - starttime - 0)/1000; return time;
var newposy = giveposY(enemy) + (step_y*enemyydir[num]) + 0;
setposX(enemy, newposx);
setposY(enemy, newposy);
checktouching(num + "");
<TITLE>范振球 唐国祥一组</TITLE>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<SCRIPT language=JavaScript type=text/javascript>
isNS4 = (yers) ? true : false;
}
function givesize(divname, dimension)
{
var divsize = 0;
if (dimension == 'y')
{
if (isNS4) divsize = yers[divname].clip.height;
}
document.onmousedown = start;
document.onmousemove = checkLocation;
document.onmouseup = stop;
function startclock()
{
var today = new Date(); starttime = today.getTime();
var posTop = parseInt(document.getElementById(divname).style.top + "");
return posTop;
}
function setposX(divname, xpos)
{
if (isNS4) yers[divname].left = xpos;
if (touch == 1)
{
stop(); reset();
}
}
function movenemies()