private void DetectDragStart()
{
if (!Input.GetKeyDown(KeyCode.Mouse0))
{
return;
}
//in case drag end wasn't called properly
if (m_pointerTarget != null)
{
m_pointerTarget?.OnEndDrag(m_eventData);
m_pointerTarget = null;
}
m_previousPointerPosition = Input.mousePosition;
foreach (var hit in m_raycastResults)
{
if (hit.gameObject.TryGetComponent <DragArea>(out var target))
{
if (target == null)
{
continue;
}
UpdateEventData(target.gameObject);
m_eventData.PointerBegin = Input.mousePosition;
m_pointerTarget = target.TargetWindow;
m_pointerTarget.OnBeginDrag(m_eventData);
m_pointerTarget.transform.SetAsLastSibling();
break;
}
}
OnDrag?.Invoke();
}
public void CollideWith(DragWindow window)
{
RectTransform.position = m_previousPosition;
}