private void OnMouseDrag()
{
if (isMovable && !isMerging)
{
GridRef.DragItem(this);
Vector3 newPos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
newPos = new Vector2(Mathf.Clamp(newPos.x, (-grid.Width + grid.ItemWidth) / 2.0f, (grid.Width - grid.ItemWidth) / 2.0f),
Mathf.Clamp(newPos.y, (-grid.Height + grid.ItemWidth) / 2.0f, (grid.Height - grid.ItemWidth) / 2.0f));
transform.position = newPos;
}
}
