分享鼠标跟踪效果
var g = 2, st = 0, i, clearPoint = 200;
var points = new Array();
function flower() {
for (i=0; i<Math.floor(2+Math.random()*4); i++) {
var obj = attachMovie("flower", "flower"+points.length, points.length);
points.push(new Array(obj, _xmouse, _ymouse, Math.floor(Math.random()*10-5), Math.floor(Math.random()*15-12), Math.floor(70+Math.random()*30)));
}
}
function onEnterFrame() {
trace(st+","+points.length);
for (i=st; i<points.length; i++) {
var tmp = points[i];
if (tmp == null) {
if (i == st) {
st++;
}
continue;
}
if (tmp[5]<0) {
tmp[0].removeMovieClip();
points[i] = null;
} else {
tmp[0]._alpha = tmp[5];
tmp[0]._x = tmp[1];
tmp[0]._y = tmp[2];
tmp[1] += tmp[3];
tmp[2] += tmp[4];
tmp[4] += g;
tmp[5] -= 5;
}
}
if (st>clearPoint) {
points.splice(0, st);
st = 0;
}
}
var obj = new Object();
obj.onMouseMove = function() {
flower();
};
Mouse.addListener(obj);
补充：flash教程,As3.0 
