flash - AS3：HitTest 任何对象

Question

我正在开发一个图像作为光标的应用程序。现在我想随时知道光标悬停在哪个对象上。有点像 HitTestObject(*)，然后我可以看到 * 代表什么对象。有谁知道我怎么能做到这一点？（并且不能使用鼠标）

Answer 1

将要监视“悬停”的元素放在单独的数组中，然后将 onEnterFrame 侦听器添加到附加到鼠标的对象上，该对象遍历数组并对每个对象执行 hitTests。

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

这将进入鼠标附加对象的 onEnterFrame 处理程序：

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

Answer 2

我已经解决了这个问题:) 因为光标与其他光标位于不同的精灵中，所以我必须这样做，因为我无法将对象传递到悬停到数组中。

        //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);
        }