飄葉，無風

onMouseDown=function()
{
var tmp=this.createEmptyMovieClip("obj"+this.getNextHighestDepth(),this.getNextHighestDepth());
tmp._x=_xmouse;
tmp._y=_ymouse;
tmp.onEnterFrame=function()
{
tmp._y+=1;
}
var myleaf=tmp.attachMovie("leaf",
"myeaf"+this.getNextHighestDepth(),
this.getNextHighestDepth(),{_xscale:50+random(50),_yscale:_xscale});

myleaf._rotation=random(360);
myleaf.degree=30+random(120);//30=?pi ，30/180


myleaf.r=120+random(40);
myleaf.dcx=myleaf.r*Math.cos(degree_to_pi(myleaf.degree));
myleaf.dcy=myleaf.r*Math.sin(degree_to_pi(myleaf.degree));

myleaf.cl=myleaf.degree < onenterframe="function()" _x="myleaf.r*Math.cos(degree_to_pi(myleaf.degree))-myleaf.dcx;" _y="myleaf.r*Math.sin(degree_to_pi(myleaf.degree))-myleaf.dcy;">=135)
{
myleaf.cl=-1;
}
if(myleaf.degree<45)
{
myleaf.cl=1;
}
myleaf.r+=(random(10)-5)/10;
myleaf.degree+=1*myleaf.cl;
myleaf._rotation+=10;
}

}
function degree_to_pi(degree:Number):Number
{
degree=degree/180;// 30/2pi
degree=Math.PI*degree;
return degree;
}