Unity实现俄罗斯方块

transform.RotateAround(pivot.position, Vector3.forward, -90);

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class Model : MonoBehaviour
{
 public const int NORMAL_ROWS = 20;//最大行数（这个也是用于判断游戏结束逻辑）
 public const int MAX_ROWS = 23;//最大行数+3（用于判断游戏结束逻辑）
 public const int MAX_COLUMNS = 10;//最大列数
 private Transform[,] map = new Transform[MAX_COLUMNS, MAX_ROWS];//地图数组map
 //下面这些不用管，是UI的一些参数
 private int score = 0;
 private int highScore = 0;
 private int numbersGame = 0;
 
 public int Score { get { return score; } }
 public int HighScore { get { return highScore; } }
 public int NumbersGame { get { return numbersGame; } }
 
 public bool isDataUpdate = false;
 
 private void Awake()
 {
 LoadData();
 }
 //检查一个方块(如Sharp-1)的位置是否合理,参数t是方块的Transform
 public bool IsValidMapPosition(Transform t)
 {
 foreach (Transform child in t)
 {
 //子物体带"Block"字符的标签tag都是"Block"，它们就是小方块
 if (child.tag != "Block") continue;
 //如果遍历到的子物体是小方块的话进行下面的逻辑判断
 Vector2 pos = child.position.Round();//Round是我扩展的方法，==贴出来.
 //若不在地图范围内，则不可用
 if (IsInsideMap(pos) == false) return false;
 //有其他图形占用着，则不可用
 if (map[(int)pos.x, (int)pos.y] != null)
 {
 return false;//不可用
 }
 }
 return true;
 }
 //不在地图范围内返回false,在返回true
 private bool IsInsideMap(Vector2 pos)
 {
 return pos.x >= 0 && pos.x < MAX_COLUMNS && pos.y >= 0;
 }
 /// <summary>
 /// 在方块进行检查位置不合理后，会固定自身位置 放入map[,]保存小方块Block的Transform组件
 /// </summary>
 /// <param name="t">shape的父物体transform</param>
 public bool PlaceShape(Transform t)
 {
 foreach (Transform child in t)
 {
 if (child.tag != "Block") continue;
 Vector2 pos = child.position.Round();
 map[(int)pos.x, (int)pos.y] = child;
 }
 //放进map后需要检查整张地图是否需要消行
 return CheckMap();
 }
 /// <summary>
 /// 检查地图 是否需要消除行
 /// </summary>
 private bool CheckMap()
 {
 int count = 0;//消行数
 for (int i = 0; i < MAX_ROWS; i++)
 {
 //若第i行填满小方块
 if (CheckIsRowFull(i))
 {
 count++;
 DeleteRow(i);//消除第i行
 MoveDownRowsAbove(i + 1);//第i+1行及其上方的所有行向下移动一行（从下到上移动）
 i--; //因为上面的那一行已经移动下来了，这里将i--,目的是为了继续检查上面那一行是否满,因为for会将i++,这样就抵消了i++,让i继续保持原样
 }
 }
 //下面不用管，是UI部分的逻辑
 if (count > 0)
 {
 score += count * 100;
 if(score>highScore)
 {
 highScore = score;
 }
 isDataUpdate = true;
 return true;
 }
 else
 {
 return false;
 }
 
 }
 //检查第row行是否满
 private bool CheckIsRowFull(int row)
 {
 for (int i = 0; i < MAX_COLUMNS; i++)
 {
 if (map[i, row] == null)
 {
 return false;
 }
 }
 return true;
 }
 private void DeleteRow(int row)
 {
 for (int i = 0; i < MAX_COLUMNS; i++)
 {
 Destroy(map[i, row].gameObject);
 map[i, row] = null;
 }
 }
 //将索引row行至最上面的行都往下移动一行(从下开始移动)
 public void MoveDownRowsAbove(int row)
 {
 for (int i = row; i < MAX_ROWS; i++)
 {
 MoveDownRow(i);
 }
 }
 //将row行 下移一行，处理了逻辑位置 和 物体位置
 private void MoveDownRow(int row)
 {
 for (int i = 0; i < MAX_COLUMNS; i++)
 {
 if (map[i, row] != null)
 {
 map[i, row - 1] = map[i, row];//这里是逻辑上的移动
 map[i, row] = null;
 map[i, row - 1].position += new Vector3(0, -1, 0);//物理上的移动
 }
 }
 }
 //判断游戏结束逻辑
 public bool isGameOver()
 {
 for(int i= NORMAL_ROWS; i<MAX_ROWS;i++)
 {
 for(int j=0;j<MAX_COLUMNS;j++)
 {
 if (map[j, i] != null)
 {
  numbersGame++;
  SaveData();
  return true;
 }
 }
 }
 return false;
 }
 public void Restart()
 {
 for(int i=0;i<MAX_COLUMNS;i++)
 {
 for(int j=0;j<MAX_ROWS;j++)
 {
 if(map[i,j])
 {
  Destroy(map[i, j].gameObject);
  map[i, j] = null;
 }
 }
 }
 score = 0;
 }
 private void LoadData()
 {
 highScore= PlayerPrefs.GetInt("HighScore", 0);
 numbersGame = PlayerPrefs.GetInt("NumbersGame",0);
 }
 private void SaveData()
 {
 PlayerPrefs.SetInt("HighScore", highScore);
 PlayerPrefs.SetInt("NumbersGame", numbersGame);
 }
 public void ClearData()
 {
 score = 0;
 highScore = 0;
 numbersGame = 0;
 SaveData();
 }
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class Shape : MonoBehaviour {
 
 private GameManager gameManager;
 private Ctrl ctrl;
 private bool isPause = false;
 private bool isSpeedUp = false;
 private float timer = 0;
 private float stepTime = 0.8f;//0.8s方块下落一行
 private Transform pivot;//锚点(旋转中心点)
 private int multiple = 15; 
 
 private void Awake()
 {
 pivot = transform.Find("Pivot");
 }
 
 private void Update()
 {
 if (isPause) return;
 timer += Time.deltaTime;
 if(timer>stepTime)
 {
 timer = 0;
 Fall();
 }
 InputControl();
 }
 /// <summary>
 /// 方块下落一行逻辑
 /// </summary>
 private void Fall()
 {
 //先尝试将方块下移一行
 Vector3 pos = transform.position;
 pos.y -= 1;
 transform.position = pos;
 //使用Model的方法检查方块位置是否合理，若不合理返回false进入if
 if(ctrl.model.IsValidMapPosition(this.transform)==false)
 {
 pos.y += 1;//因为当前位置是不可用的，而上一个位置肯定是可用的，所以这里移动回到上一个位置处
 transform.position = pos;
 isPause = true;//暂停当前shape的下移
 bool isLineclear = ctrl.model.PlaceShape(this.transform);//使用Model的方法固定shape,即放入map数组保存小方块信息，并且检查地图消除行
 if (isLineclear) ctrl.audioManager.PlayLineClear();//isLineclear是true代表消除行了，播放声音
 gameManager.FallDown();//设置GameManager中的currentShape=null,这样就会实例化下一个shape方块，并且更新分数UI
 return;
 }
 ctrl.audioManager.PlayDrop();//方块固定的声音
 }
 //输入控制
 private void InputControl()
 {
 // if (isSpeedUp) return;
 float h=0;
 if(Input.GetKeyDown(KeyCode.LeftArrow))
 {
 h = -1;
 }
 else if(Input.GetKeyDown(KeyCode.RightArrow))
 {
 h = 1;
 }
 if(h!=0)
 {
 //这里和Fall下移逻辑处理手法一样，不再阐述!
 Vector3 pos = transform.position;
 pos.x += h;
 transform.position = pos;
 if (ctrl.model.IsValidMapPosition(this.transform) == false)
 {
 pos.x -= h;
 transform.position = pos;
 }
 else
 {
 ctrl.audioManager.PlayControl();
 }
 }
 
 //按键盘↑对方块进行旋转（即变形）
 if(Input.GetKeyDown(KeyCode.UpArrow))
 {
 //以pivot位置为旋转中心，绕z轴旋转-90°
 transform.RotateAround(pivot.position, Vector3.forward, -90);
 //旋转后自然也要检查下位置是否合理
 if (ctrl.model.IsValidMapPosition(this.transform) == false)
 {
 //不合理，旋转90° 变回之前那样子(注意：这个过程是瞬间发生的，玩家不会看到这个变化过程！）
 transform.RotateAround(pivot.position, Vector3.forward, 90);
 }
 else
 {
 ctrl.audioManager.PlayControl();
 }
 }
 //按键盘↓会进行加速方块下移
 if(Input.GetKeyDown(KeyCode.DownArrow))
 {
 isSpeedUp = true;
 stepTime /= multiple;
 }
 }
 public void Init(Color color,Ctrl ctrl,GameManager gameManager)
 {
 this.gameManager = gameManager;
 this.ctrl = ctrl;
 foreach(Transform t in transform)
 {
 if(t.tag=="Block")
 {
 t.GetComponent<SpriteRenderer>().color = color;
 }
 }
 }
 public void Pause()
 {
 isPause = true;
 }
 public void Resume()
 {
 isPause = false;
 }
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class GameManager : MonoBehaviour {
 
 private Ctrl ctrl;
 private bool isPause = true;//是否暂停状态
 private Shape currentShape = null;
 public Shape[] shapes;//shape prefabs
 public Color[] colors;//shape colors
 private Transform blockHolder;
 private void Awake()
 {
 ctrl = GetComponent<Ctrl>();
 blockHolder = transform.Find("BlockHolder");
 } 
 
 void Update () {
 if(isPause)
 {
 return;
 }
 //如果当前方块为空，生成一个方块（这个currentShape是由Shape
 if (currentShape == null)
 {
 SpawnShape();
 }
 }
 /// <summary>
 /// 删除已经没有小方块Block的sharp方块物体，即childCount小于等于1的
 /// 并且判断游戏结束逻辑
 /// </summary>
 public void FallDown()
 {
 currentShape = null;//将当前方块设置为空，这一步是为了生成新的方块
 //更新UI逻辑
 if(ctrl.model.isDataUpdate)
 {
 ctrl.view.UpdateGameUI(ctrl.model.Score, ctrl.model.HighScore);
 }
 //删除已经没有小方块的sharp物体
 foreach(Transform t in blockHolder)
 {
 if(t.childCount<=1)
 {
 Destroy(t.gameObject);
 }
 }
 //判断游戏结束
 if(ctrl.model.isGameOver())
 {
 PauseGame();
 ctrl.view.ShowGameOverUI(ctrl.model.Score);
 }
 }
 public void StartGame()
 {
 isPause = false;
 if (currentShape != null)
 {
 currentShape.Resume();
 }
 }
 public void PauseGame()
 {
 isPause = true;
 if(currentShape!=null)
 {
 currentShape.Pause();
 }
 }
 /// <summary>
 /// 生成一个方块sharp
 /// </summary>
 void SpawnShape()
 {
 //随机方块类型
 int index = Random.Range(0, shapes.Length);//random create a shape
 //随机颜色
 int indexColor = Random.Range(0, colors.Length);//random shape color
 //实例化方块
 currentShape = GameObject.Instantiate(shapes[index]);
 //放入blockholder物体下
 currentShape.transform.parent = blockHolder;
 //初始化其方块颜色等工作
 currentShape.Init(colors[indexColor],ctrl,this);
 
 }
 /// <summary>
 /// 删除当前正在下落的方块
 /// </summary>
 public void ClearShape()
 {
 if(currentShape!=null)
 {
 Destroy(currentShape.gameObject);
 currentShape = null;
 }
 }
}