关于设计：Actionscript 有关鼠标事件笔记

1、鼠标手指状指针的使用设置，将鼠标指针变换为手指状。

boy_mc.buttonMode = true;
boy_mc.addEventListener("mouseOver", overMc);
function overMc(me:MouseEvent){
 boy_mc.useHandCursor = false;
}
boy_mc.addEventListener("mouseDown", downMc);
function downMc(me:MouseEvent){
 boy_mc.useHandCursor = true;
 boy_mc.startDrag();
 boy_mc.alpha = 0.8;
}
boy_mc.addEventListener("mouseUp", upMc);
function upMc(me:MouseEvent){
 boy_mc.useHandCursor = false;
 boy_mc.stopDrag();
 boy_mc.alpha = 1;
}

2、自定义鼠标指针。

Mouse.hide();
hand_mc.startDrag(true);

3、自动回旋的追踪鼠标指针效果。利用指针位置与相关三角函数方法sin（）、cos（）、atan2（）来旋转移动影片剪辑。

var speed=10;
var disX,disY,radi;
function mousRot(){
 radi=Math.atan2(disY,disX);
 var de=angle(radi);
 mouse_mc.rotation=de;
}
function angle(radi){
 var de=radi * 180 /Math.PI;
 return(de);
}
this.addEventListener(Event.ENTER_FRAME,traceMous);
function traceMous(me:Event){
 disX=this.mouseX-mouse_mc.x;
 disY=this.mouseY-mouse_mc.y;
 var dis=Math.sqrt(disX * disX + disY * disY);
 if (dis>speed){
  mousRot();
  var spX=Math.cos(radi) * speed;
  var spY=Math.sin(radi) * speed;
  mouse_mc.x += spX;
  mouse_mc.y += spY;
 }else if (mouse_mc.x != this.mouseX && mouse_mc.y != this.mouseY){
  mousRot();
  mouse_mc.x=this.mouseX;
  mouse_mc.y=this.mouseY;
 }
}

4、随鼠标指针飘荡的文字

var wordArr=[word1_mc,word2_mc,word3_mc,word4_mc,word5_mc,word6_mc,word7_mc,word8_mc,word9_mc,word10_mc,word11_mc,word12_mc,word13_mc];
var arrLen=wordArr.length-1;
this.addEventListener(Event.ENTER_FRAME,moveWord);
function moveWord(me:Event)
{
 wordArr[0].x=stage.mouseX + 12;
 wordArr[0].y=stage.mouseY + 12;
 var i=0;
 do  {
  wordArr[i+1].x += (wordArr[i].x - wordArr[i+1].x)/2 + 12;
  wordArr[i+1].y += (wordArr[i].y - wordArr[i+1].y)/2;
  i++;
 }while(i<arrLen)
}

5、随鼠标指针缩放的幽灵群。在元件中建立2个关键帧

var dx=stage.mouseX - this.x;
var dy=stage.mouseY - this.y;
var size = 115 - (Math.sqrt(dx * dx + dy * dy) / 3);
if (size<0){
 size=0;
}
this.alpha =  size / 70;
this.width = size;
this.height = size;

this.gotoAndPlay(1);

6、产生鼠标移动轨迹的效果。

场景中

stage.addEventListener(MouseEvent.MOUSE_MOVE,traceobj);
function traceobj(me:MouseEvent){
 var copy_mc:bubbleA=new bubbleA();
  copy_mc.x=stage.mouseX;
  copy_mc.y=stage.mouseY;
  this.addChild(copy_mc);
}

元件中最后一帧

this.parent.removeChild(this);
stop();

7、随鼠标移动的射击游戏瞄准器。

stage.addEventListener("mouseMove",moveTarget);
function moveTarget(me:MouseEvent){
 hLine_mc.y=mouseY;
 vLine_mc.x=mouseX;
 scope_mc.y=mouseY;
 scope_mc.x=mouseX;
 me.updateAfterEvent();
}

8、随鼠标指针移动的目光。

眼睛元件上的AS代码

stage.addEventListener(Event.ENTER_FRAME,moveEye);
function moveEye(me:Event){
 var dx=stage.mouseX-this.x;
 var dy=stage.mouseY-this.y;
 var rad=Math.atan2(dy,dx);
 var deg=180 * rad / Math.PI;
 this.rotation=deg;
}