AS3：HitTest任何對象

Question

我正在使用圖像作爲光標的應用程序。現在我想知道光標在哪個對象上徘徊。有點像HitTestObject（*），然後我可以看到*代表什麼對象。有沒有人有任何想法我可以做到這一點？ （並且使用鼠標不是選項）

Answer 1

我已經解決了這個問題:)因爲光標是在不同的精靈比別人，我有這樣做，因爲我無法將對象傳遞到數組中。

 //First we will create a point that contains the x and y of this cursor. 
     var _position:Point = new Point(x + (width/2), y + (height/2)); 

     //Secondly, we will get an array of elements that are under this point. 
     var _objects:Array = parentApplication.getObjectsUnderPoint(_position); 

     //If the length of the objectsList is longer than or equal to 2, we may assume that 
     //there is an object 
     if(_objects.length >= 2) 
     { 
      //Set the currentObject variable to the object the cursor is hovering over. 
      //The minus two is simple. The cursor is always the last object under that point, 
      //so we need the object before that. 
      _currentObject = _objects[_objects.length - 2]; 

      //dispatch the event in the object. 
      dispatchCursorEventToObject(EyeEvent.CURSOROVER); 
     } 

Answer 2

將要監視的元素放置在單獨的陣列中，然後向連接到鼠標的對象添加onEnterFrame偵聽器，該對象遍歷數組並執行hitTests與每個對象。

var hitTestClips:Array; 
// populate hitTestClips with the items you want to hitTest 

，這會轉變的onEnterFrame處理您的鼠標連接的對象：

for(var item:MovieClip in hitTestClips) 
{ 
    if(item.hitTest(this.x, this.y, true)) 
    { 
    trace('now hovering above ' + item); 
    } 
}