我在这个 AS3 项目中不知所措。
我不是动作脚本专家，当然也不是 AS3 专家，但我设法创建（在此帮助下：http ://swamy-techtalk.blogspot.com/2011/07/elastic-string-to-mouse-pointer-effect .html ) 从点到可拖动影片剪辑的弹性字符串效果。
问题是脚本在我测试时似乎使 Flash 或浏览器崩溃。（不是在我玩电影剪辑时立即）
辛西我在我编译的脚本中不知所措，我不完全确定出了什么问题。一些谷歌研究暗示它可能与 removeChildAt() 有关，我从 removeChildAt(0) 更改为 removeChildAt(1) 以防止它删除我的电影剪辑。
希望有人有耐心通读我的脚本，看看我做错了什么。
此处的示例：http: //www.madsringblom.dk/flash/pullstring.html （请注意它可能会使您的浏览器崩溃）下面的代码：
Object(this).leaf_mc.addEventListener(MouseEvent.MOUSE_DOWN, mouseDownHandler);
stage.addEventListener(MouseEvent.MOUSE_UP, mouseUpHandler);
var origX:int = Object(this).leaf_mc.x + 1;
var origY:int = Object(this).leaf_mc.y + 2;
var pullbackX:int = Object(this).leaf_mc.x;
var pullbackY:int = Object(this).leaf_mc.y;
var dragging:Boolean = false;
//speed of pulling and rotating back when stop dragging.
var speed:int = 15;
var addX:int = 2
var addY:int = 3
function mouseDownHandler(e:MouseEvent):void
{
var obj = e.target;
obj.startDrag();
dragging = true;
}
function mouseUpHandler(e:MouseEvent):void
{
var obj = e.target;
Object(this).leaf_mc.stopDrag();
dragging = false;
}
import flash.display.*;
import flash.events.MouseEvent;
import flash.events.Event;
var haschild:Boolean = false;
var gotonodes:Array = new Array();
var currentnodes:Array = new Array();
var posX:int = Object(this).leaf_mc.x + addX;
var posY:int = Object(this).leaf_mc.y + addY;
gotonodes = Interpolate(posX,posY,origX,origY,25);
currentnodes = gotonodes;
stage.addEventListener(Event.ENTER_FRAME, onmove1);
function onmove1(e:Event)
{
for (var node = 0; node < gotonodes.length - 1; node++)
{
currentnodes[node].xco=currentnodes[node].xco+(gotonodes[node].xco-currentnodes[node].xco)/(node*node/30+1);
currentnodes[node].yco=currentnodes[node].yco+(gotonodes[node].yco-currentnodes[node].yco)/(node*node/30+1);
}
var posX:int = Object(this).leaf_mc.x + addX;
var posY:int = Object(this).leaf_mc.y + addY;
gotonodes=Interpolate(posX,posY,origX,origY,25);
// pull leaf_mc back to starting point when released. And rotate back.
if (dragging == false)
{
Object(this).leaf_mc.x-=(Object(this).leaf_mc.x-pullbackX)/speed;
Object(this).leaf_mc.y-=(Object(this).leaf_mc.y-pullbackY)/speed;
Object(this).leaf_mc.rotation+=Object(this).leaf_mc.rotation/speed;
}
// rotating the leaf_mc according to the point (origX,origY)
var theX:int = origX - Object(this).leaf_mc.x;
var theY:int = (origY - Object(this).leaf_mc.y) * -1;
var angle = Math.atan(theY/theX)/(Math.PI/180);
Math.atan( -5 / 10) / (Math.PI / 180);
if (theX < 0)
{
angle += 180;
}
if (theX >= 0 && theY < 0)
{
angle += 360;
}
Object(this).leaf_mc.rotation = (angle*-1) + 90;
DrawNodes(currentnodes);
}
function FindAngle(x1, x2, y1, y2):Number
{
return Math.atan2(y2-y1, x2-x1);
};
function Distance(x1, x2, y1, y2):Number
{
return Math.sqrt(Math.pow(x2-x1,2)+Math.pow(y2-y1,2));
}
function Interpolate(x1, y1, x2, y2, n):Array
{
var dist= Distance(x1,x2,y1,y2);
var ang = FindAngle(x1,x2,y1,y2);
var points = [];
for (var l = 0; l <= dist; l += dist / n)
{
var x3 =x1+l*Math.cos(ang);
var y3 = y1+l*Math.sin(ang);
points.push({xco:x3,yco:y3});
}
points.push( { xco:x1, yco:y1 } );
return points;
}
function DrawNodes(array):void
{
if(haschild)
{
this.removeChildAt(1);
haschild=false;
}
var shape:Shape = new Shape();
shape.graphics.lineStyle(1,0x331100,40);
shape.graphics.moveTo(array[0].xco, array[0].yco);
for (var i = 0; i < array.length - 1; i++)
{
shape.graphics.lineTo(array[i].xco,array[i].yco);
}
shape.graphics.beginFill(0xFBFFA4,1);
shape.graphics.drawCircle(array[0].xco,array[0].yco,1);
shape.graphics.endFill();
this.addChild(shape);
haschild = true;
}