/**
* An internal function for comparing an object against the contents of a
* node.
*
* @return Whether or not any overlaps were found.
*/
protected Boolean overlapNode()
{
// Walk the list and check for overlaps
Boolean overlapProcessed = false;
FlxObject checkObject;
while (_iterator != null)
{
if (!_object.Exists || (_object.AllowCollisions <= 0))
{
break;
}
checkObject = _iterator.Object;
if ((_object == checkObject) || ((_object != null) && (_object.Equals(checkObject))) || !checkObject.Exists || (checkObject.AllowCollisions <= 0))
{
_iterator = _iterator.next;
continue;
}
// calculate bulk hull for _object
_objectHullX = (_object.X < _object.Last.X) ? _object.X : _object.Last.X;
_objectHullY = (_object.Y < _object.Last.Y) ? _object.Y : _object.Last.Y;
_objectHullWidth = _object.X - _object.Last.X;
_objectHullWidth = _object.Width + ((_objectHullWidth > 0) ? _objectHullWidth : -_objectHullWidth);
_objectHullHeight = _object.Y - _object.Last.Y;
_objectHullHeight = _object.Height + ((_objectHullHeight > 0) ? _objectHullHeight : -_objectHullHeight);
// calculate bulk hull for checkObject
_checkObjectHullX = (checkObject.X < checkObject.Last.X) ? checkObject.X : checkObject.Last.X;
_checkObjectHullY = (checkObject.Y < checkObject.Last.Y) ? checkObject.Y : checkObject.Last.Y;
_checkObjectHullWidth = checkObject.X - checkObject.Last.X;
_checkObjectHullWidth = checkObject.Width + ((_checkObjectHullWidth > 0) ? _checkObjectHullWidth : -_checkObjectHullWidth);
_checkObjectHullHeight = checkObject.Y - checkObject.Last.Y;
_checkObjectHullHeight = checkObject.Height + ((_checkObjectHullHeight > 0) ? _checkObjectHullHeight : -_checkObjectHullHeight);
// check for intersection of the two hulls
if ((_objectHullX + _objectHullWidth > _checkObjectHullX) && (_objectHullX < _checkObjectHullX + _checkObjectHullWidth) &&
(_objectHullY + _objectHullHeight > _checkObjectHullY) && (_objectHullY < _checkObjectHullY + _checkObjectHullHeight))
{
// Execute callback functions if they exist
if ((_processingCallback == null) || _processingCallback(_object, checkObject))
{
overlapProcessed = true;
if (_notifyCallback != null)
{
_notifyCallback(_object, checkObject);
}
}
}
_iterator = _iterator.next;
}
return(overlapProcessed);
}
