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danutza_84 la Simpatie.ro
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omaebazooka
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div id=dot0 style=width11; height11; positionabsolute; z-index1; visibilityhidden;
img src=bullet.gif height=11 width=11
div
div id=dot1 style=width11; height11; positionabsolute; z-index1;
img src=bullet.gif height=11 width=11
div
div id=dot2 style=width11; height11; positionabsolute; z-index1;
img src=bullet.gif height=11 width=11
div
div id=dot3 style=width11; height11; positionabsolute; z-index1;
img src=bullet.gif height=11 width=11
div
div id=dot4 style=width11; height11; positionabsolute; z-index1;
img src=bullet.gif height=11 width=11
div
div id=dot5 style=width11; height11; positionabsolute; z-index1;
img src=bullet.gif height=11 width=11
div
div id=dot6 style=width11; height11; positionabsolute; z-index1;
img src=bullet.gif height=11 width=11
div
script LANGUAGE=JavaScript
!-- hide code
Script descarcat de pe siteul
var nDots = 7;
var Xpos = 0;
var Ypos = 0;
fixed time step, no relation to real time
var DELTAT = .01;
size of one spring in pixels
var SEGLEN = 10;
spring constant, stiffness of springs
var SPRINGK = 10;
all the physics is bogus, just picked stuff to
make it look okay
var MASS = 1;
Positive XGRAVITY pulls right, negative pulls left
Positive YGRAVITY pulls down, negative up
var XGRAVITY = 0;
var YGRAVITY = 50;
RESISTANCE determines a slowing force proportional to velocity
var RESISTANCE = 10;
stopping criterea to prevent endless jittering
doesn't work when sitting on bottom since floor
doesn't push back so acceleration always as big
as gravity
var STOPVEL = 0.1;
var STOPACC = 0.1;
var DOTSIZE = 11;
BOUNCE is percent of velocity retained when
bouncing off a wall
var BOUNCE = 0.75;
var isNetscape = navigator.appName==Netscape;
always on for now, could be played with to
let dots fall to botton, get thrown, etc.
var followmouse = true;
var dots = new Array();
init();
function init()
{
var i = 0;
for (i = 0; i nDots; i++) {
dots[i] = new dot(i);
}
if (!isNetscape) {
I only know how to read the locations of the
LI items in IE
skip this for now
setInitPositions(dots)
}
set their positions
for (i = 0; i nDots; i++) {
dots[i].obj.left = dots[i].X;
dots[i].obj.top = dots[i].Y;
}
if (isNetscape) {
start right away since they are positioned
at 0, 0
startanimate();
} else {
let dots sit there for a few seconds
since they're hiding on the real bullets
setTimeout(startanimate(), 1000);
}
}
function dot(i)
{
this.X = Xpos;
this.Y = Ypos;
this.dx = 0;
this.dy = 0;
if (isNetscape) {
this.obj = eval(document.dot + i);
} else {
this.obj = eval(dot + i + .style);
}
}
function startanimate() {
setInterval(animate(), 20);
}
This is to line up the bullets with actual LI tags on the page
Had to add -DOTSIZE to X and 2DOTSIZE to Y for IE 5, not sure why
Still doesn't work great
function setInitPositions(dots)
{
initialize dot positions to be on top
of the bullets in the ul
var startloc = document.all.tags(LI);
var i = 0;
for (i = 0; i startloc.length && i (nDots - 1); i++) {
dots[i+1].X = startloc[i].offsetLeft
startloc[i].offsetParent.offsetLeft - DOTSIZE;
dots[i+1].Y = startloc[i].offsetTop +
startloc[i].offsetParent.offsetTop + 2DOTSIZE;
}
put 0th dot above 1st (it is hidden)
dots[0].X = dots[1].X;
dots[0].Y = dots[1].Y - SEGLEN;
}
just save mouse position for animate() to use
function MoveHandler(e)
{
Xpos = e.pageX;
Ypos = e.pageY;
return true;
}
just save mouse position for animate() to use
function MoveHandlerIE() {
Xpos = window.event.x + document.body.scrollLeft;
Ypos = window.event.y + document.body.scrollTop;
}
if (isNetscape) {
document.captureEvents(Event.MOUSEMOVE);
document.onMouseMove = MoveHandler;
} else {
document.onmousemove = MoveHandlerIE;
}
function vec(X, Y)
{
this.X = X;
this.Y = Y;
}
adds force in X and Y to spring for dot[i] on dot[j]
function springForce(i, j, spring)
{
var dx = (dots[i].X - dots[j].X);
var dy = (dots[i].Y - dots[j].Y);
var len = Math.sqrt(dxdx + dydy);
if (len SEGLEN) {
var springF = SPRINGK (len - SEGLEN);
spring.X += (dx len) springF;
spring.Y += (dy len) springF;
}
}
function animate() {
dots[0] follows the mouse,
though no dot is drawn there
var start = 0;
if (followmouse) {
dots[0].X = Xpos;
dots[0].Y = Ypos;
start = 1;
}
for (i = start ; i nDots; i++ ) {
var spring = new vec(0, 0);
if (i 0) {
springForce(i-1, i, spring);
}
if (i (nDots - 1)) {
springForce(i+1, i, spring);
}
air resisitancefriction
var resist = new vec(-dots[i].dx RESISTANCE,
-dots[i].dy RESISTANCE);
compute new accel, including gravity
var accel = new vec((spring.X + resist.X)MASS + XGRAVITY,
(spring.Y + resist.Y) MASS + YGRAVITY);
compute new velocity
dots[i].dx += (DELTAT accel.X);
dots[i].dy += (DELTAT accel.Y);
stop dead so it doesn't jitter when nearly still
if (Math.abs(dots[i].dx) STOPVEL &&
Math.abs(dots[i].dy) STOPVEL &&
Math.abs(accel.X) STOPACC &&
Math.abs(accel.Y) STOPACC) {
dots[i].dx = 0;
dots[i].dy = 0;
}
move to new position
dots[i].X += dots[i].dx;
dots[i].Y += dots[i].dy;
get size of window
var height, width;
if (isNetscape) {
height = window.innerHeight + window.pageYOffset;
width = window.innerWidth + window.pageXOffset;
} else {
height = document.body.clientHeight + document.body.scrollTop;
width = document.body.clientWidth + document.body.scrollLeft;
}
bounce off 3 walls (leave ceiling open)
if (dots[i].Y = height - DOTSIZE - 1) {
if (dots[i].dy 0) {
dots[i].dy = BOUNCE -dots[i].dy;
}
dots[i].Y = height - DOTSIZE - 1;
}
if (dots[i].X = width - DOTSIZE) {
if (dots[i].dx 0) {
dots[i].dx = BOUNCE -dots[i].dx;
}
dots[i].X = width - DOTSIZE - 1;
}
if (dots[i].X 0) {
if (dots[i].dx 0) {
dots[i].dx = BOUNCE -dots[i].dx;
}
dots[i].X = 0;
}
move img to new position
dots[i].obj.left = dots[i].X;
dots[i].obj.top = dots[i].Y;
}
}
end code hiding --
script
_______________________________________
"Living mistery" "RoTop69" "Producator vinuri nobile" - Paunesti,Vrancea, mail : info-at-cramanobless.ro Intra in lumea EREPUBLIK
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