public void OnCardDrop(DragSource source)
{
CardUI sourceCardUI = source.GetComponent <CardUI>();
InstantiateUnit(sourceCardUI.cardData as UnitCard);
playAction = CreatePlayCardAction(sourceCardUI.cardData as UnitCard);
handManager.AddPlayAction(playAction);
Destroy(source.gameObject);
UIManager.instance.ValidateDropCost();
foreach (DropTarget target in GetComponents <DropTarget>())
{
target.enabled = false;
}
}
