Unity实现俄罗斯方块（二）

public float speed = 0.3f;//物体下落
 // Start is called before the first frame update
 void Start()
 {
 InvokeRepeating("Move", 0, speed);
 }
 void Move()
 {
 transform.position += new Vector3(0, -1, 0);
 }

float lastFail=0;
else if (Input.GetKeyDown(KeyCode.DownArrow)||Time.time-lastFail>=1)
{
 transform.position += new Vector3(0, -1, 0);
 lastFail = Time.time;
}

//设置变量
public static int width = 10;//游戏窗口的宽度
public static int height = 20;//游戏窗口的高度
public static Transform[,] grid=new Transform[width,height];
//*注：变量应设置成static 否则无法引用

public static Vector2 roundVec2(Vector2 v)
 {
 return new Vector2(Mathf.Round(v.x), Mathf.Round(v.y));
 }
 public static bool insideBorder(Vector2 pos) {
 //注宽是小于否则会出边界
 if ((int)pos.x >= 0 && (int)pos.x <width && (int)pos.y >= 0)
  return true;
 else
  return false;
 }

void Start()
 {
 if (!isValidGridPos())//刚产生就无效
 {
  Debug.Log("GAME OVER");
 }
 }
 float lastFail=0;
 // Update is called once per frame
 void Update()
 {
 //控制物体向左移
 if (Input.GetKeyDown(KeyCode.LeftArrow))
 {
  transform.position += new Vector3(-1, 0, 0);
  if (isValidGridPos())
  {
  }
  else {
  transform.position += new Vector3(1, 0, 0);
  }
 }
 //控制物体右移
 else if (Input.GetKeyDown(KeyCode.RightArrow))
 {
  transform.position += new Vector3(1, 0, 0);
  if (isValidGridPos())
  {
  }
  else
  {
  transform.position += new Vector3(-1, 0, 0);
  }
 }
 //控制物体旋转
 else if (Input.GetKeyDown(KeyCode.UpArrow))
 {
  //可在unity编辑器中通过旋转可得是对z轴进行旋转
  transform.Rotate(0, 0, -90);
  if (isValidGridPos())
  {
  }
  else
  {
  transform.Rotate(0, 0, 90);
  }
 }
 else if (Input.GetKeyDown(KeyCode.DownArrow)||Time.time-lastFail>=1)
 {
  transform.position += new Vector3(0, -1, 0);
  if (isValidGridPos())
  {
  }
  else
  {
  transform.position += new Vector3(0, 1, 0);
  FindObjectOfType<Spawner>().spawnNext();
  enabled = false;
  }
  lastFail = Time.time;
 }
 }
 bool isValidGridPos()//判断是否有效
 {
 foreach (Transform child in transform)
 {
  Vector2 v=Grid.roundVec2(child.position);
  //判断是否在边界之间
  if (!Grid.insideBorder(v))
  return false;
  if (Grid.grid[(int)v.x, (int)v.y] != null)
  return false;
 }
 return true;
 }