as3中的拖动及碰撞检测

相对于as3中没有press和release事件

hitTest()被分割成 hitTestPoint和hitTestObject

var check_mc=new Sprite()

this.addChild(check_mc)

//

check_mc.addEventListener(Event.ENTER_FRAME,checkFunc)

function checkFunc(evt:Event){

//检测对象

/*

if(mc1.hitTestObject(mc2)){

trace("true")

}

*/

//检测坐标

if(mc1.hitTestPoint(this.mouseX,this.mouseY,false)){

trace("true")

}

}

addList(mc1)

addList(mc2)

//增加事件侦听器

function addList(mc){

mc.addEventListener("mouseDown",drag)

mc.addEventListener("mouseUp",drag)

}

//拖动

function drag(evt:MouseEvent){

var obj=evt.target

var evtType=evt.type

switch(evtType){

case "mouseDown":

obj.startDrag()

break

case "mouseUp":

obj.stopDrag()

break

}

}