private void Update()
{
if (Input.GetMouseButtonDown(0))
{
Debug.Assert(Camera.main != null, "Camera.main != null");
Collider2D hit = Physics2D.OverlapPoint(Camera.main.ScreenToWorldPoint(Input.mousePosition));
CellInfo cellInfo = hit != null?hit.gameObject.GetComponent <CellInfo>() : null;
if (cellInfo != null)
{
Vector2Int pos = cellInfo.GetPos();
map[pos.x, pos.y] = (map[pos.x, pos.y] + 1) % 2; //修改铺设状态，每次点击都是状态取反
cellInfo.UpdateState(map[pos.x, pos.y]);
}
}
}
