public void Update()
{
if (Input.GetMouseButtonDown(0))
{
UpdateDragTarget();
if (target != null)
{
target.PickUp();
dragging = transform;
}
}
else if (Input.GetMouseButtonUp(0) && target != null)
{
target.PlaceDown();
target = null;
dragging = false;
}
if (dragging)
{
targetTransform.position = (Vector2)Camera.main.ScreenToWorldPoint(Input.mousePosition) + offset;
}
}