// Update is called once per frame
void Update()
{
if (Input.GetMouseButtonDown(0))
{
draggableObject = DetectDraggables();
objectDraggedFrom = DetectRecievables();
if (draggableObject != null)
{
draggableObject.Select();
}
dragged = false;
}
else if (Input.GetMouseButton(0))
{
if (draggableObject != null)
{
mousePosition = Input.mousePosition;
if (dragged)
{
draggedItemPreviewImage.transform.position = mousePosition;
//recievableObject = DetectRecievables();
//if (recievableObject != null)
//{
// recievableObject.OnObjectHoveringOver(selectedItem);
//}
}
else
if (Vector2.Distance(mouseDownPosition, mousePosition) > dragThreshold) // TODO: Optimize.
{
if (draggableMask == (draggableMask | (1 << selectedItem.gameObject.layer)))
{
dragged = true;
draggedItemPreviewImage.sprite = draggableObject.OnStartDrag();
draggedItemPreviewImage.transform.position = mousePosition;
draggedItemPreviewImage.gameObject.SetActive(true);
}
}
}
}
else if (Input.GetMouseButtonUp(0))
{
if (draggableObject != null) //something is selected.
{
draggedItemPreviewImage.gameObject.SetActive(false);
recievableObject = DetectRecievables();
if (!dragged)
{
return;
}
if (recievableObject != null && objectDraggedFrom != null && recievableObject != objectDraggedFrom) //object is over something other than where it started from. could use better logic..
{
draggableObject.OnDragDone();
recievableObject.OnObjectAdded(selectedItem);
}
else
{
draggableObject.OnCancelDrag();
}
}
}
}