x01.Tetris: 俄罗斯方块

最强大脑有个小孩玩俄罗斯方块游戏神乎其技，那么，就写一个吧，玩玩而已。

由于逻辑简单，又作了一些简化，所以代码并不多。

using System;using System.Collections.Generic;using System.Linq;using System.Windows;using System.Windows.Controls;using System.Windows.Input;using System.Windows.Media;using System.Windows.Shapes;using System.Windows.Threading;namespace x01.Tetris{  public enum BlockType  {    Straight, T, Square, Bent  }  public struct Square  {    public int Row, Col;  }  public partial class MainWindow : Window  {    const int MaxRow = 20;    const int MaxCol = 11;    double size = 0;    static bool isStarted = false;    int top = 0, down = 0;    Random rand = new Random();    DispatcherTimer timer = new DispatcherTimer();    Rectangle[,] rects = new Rectangle[MaxRow, MaxCol];    Square[] current = new Square[4];    List<Square> backup = new List<Square>();    BlockType blockType = BlockType.T;    public MainWindow()    {      InitializeComponent();      Init();      timer.Tick += Timer_Tick;      timer.Interval = TimeSpan.FromSeconds(0.5);      timer.Start();    }    bool isPressing = false;    protected override void OnKeyDown(KeyEventArgs e)    {      base.OnKeyDown(e);      if (e.Key == Key.Escape) {        for (int r = 0; r < MaxRow; r++) {          for (int c = 0; c < MaxCol; c++) {            rects[r, c].Visibility = Visibility.Hidden;          }        }        isStarted = false;        isStarting = false;      }      if (!isStarted) return;      isPressing = true;      if (e.Key == Key.Left) {        for (int i = 0; i < 4; i++) {          var c = current[i];          if (HasSquare(c.Row, c.Col - 1) || !InRange(c.Row, c.Col - 1)) {            isPressing = false;            return;          }        }        backup.AddRange(current);        for (int i = 0; i < 4; i++) {          current[i].Col--;        }      } else if (e.Key == Key.Right) {        for (int i = 0; i < 4; i++) {          var c = current[i];          if (HasSquare(c.Row, c.Col + 1) || !InRange(c.Row, c.Col + 1)) {            isPressing = false;            return;          }        }        backup.AddRange(current);        for (int i = 0; i < 4; i++) {          current[i].Col++;        }      } else if (e.Key == Key.Up) {        Rotate();      } else if (e.Key == Key.Down) {        for (int i = 0; i < 5; i++) {          Down();          ReDraw();        }      }      isPressing = false;    }    bool HasSquare(int row, int col)    {      return InRange(row, col) && !current.Any(s => s.Row == row && s.Col == col)        && rects[row, col].Visibility == Visibility.Visible;    }    int rotateCount = 0;    Square[] rotateBack = null;    private void Rotate()    {      rotateBack = (Square[])current.Clone();      switch (blockType) {        case BlockType.Straight:          if (rotateCount % 4 == 0 || rotateCount % 4 == 2) {            for (int i = 0; i < 4; i++) {              rotateBack[i].Row = top;              rotateBack[i].Col += i;            }          } else if (rotateCount % 4 == 1 || rotateCount % 4 == 3) {            for (int i = 0; i < 4; i++) {              rotateBack[i].Row += i;              rotateBack[i].Col = rotateBack[0].Col;            }          }          break;        case BlockType.T:          if (rotateCount % 4 == 0) {            rotateBack[0].Row--;            rotateBack[0].Col++;            rotateBack[1].Row++;            rotateBack[1].Col++;            rotateBack[3].Row--;            rotateBack[3].Col--;          } else if (rotateCount % 4 == 1) {            rotateBack[0].Row--;            rotateBack[0].Col--;            rotateBack[1].Row--;            rotateBack[1].Col++;            rotateBack[3].Row++;            rotateBack[3].Col--;          } else if (rotateCount % 4 == 2) {            rotateBack[0].Row++;            rotateBack[0].Col--;            rotateBack[1].Row--;            rotateBack[1].Col--;            rotateBack[3].Row++;            rotateBack[3].Col++;          } else if (rotateCount % 4 == 3) {            rotateBack[0].Row++;            rotateBack[0].Col++;            rotateBack[1].Row++;            rotateBack[1].Col--;            rotateBack[3].Row--;            rotateBack[3].Col++;          }          break;        case BlockType.Square:          break;        case BlockType.Bent:          if (rotateCount % 4 == 0 || rotateCount % 4 == 2) {            rotateBack[2].Col += 2;            rotateBack[1].Row -= 2;          } else if (rotateCount % 4 == 1 || rotateCount % 4 == 3) {            rotateBack[2].Col -= 2;            rotateBack[1].Row += 2;          }          break;        default:          break;      }      for (int i = 0; i < 4; i++) {        var r = rotateBack[i];        if (HasSquare(r.Row, r.Col) || !InRange(r.Row, r.Col)) {          return;        }      }      current = (Square[])rotateBack.Clone();      backup.AddRange(current);      rotateCount++;      if (rotateCount == 4) rotateCount = 0;    }    private void Timer_Tick(object sender, EventArgs e)    {      if (isPressing) return;      if (isStarting) return;      if (isStarted == false)        Start();      Down();      ReDraw();    }    private void Down()    {      if (isStarted == false) return;      if (current.Any(s => s.Row + 1 == MaxRow)) return;      foreach (var b in backup) {        if (InRange(b.Row, b.Col))          rects[b.Row, b.Col].Visibility = Visibility.Hidden;      }      backup.Clear();      top = down = current[0].Row;      for (int i = 0; i < 4; i++) {        int row = ++current[i].Row;        int col = current[i].Col;        if (InRange(row, col)) {          rects[row, col].Visibility = Visibility.Visible;        }        if (top > row) top = row;        if (down < row) down = row;      }      backup.AddRange(current);    }    bool InRange(int row, int col)    {      return row >= 0 && row < MaxRow && col >= 0 && col < MaxCol;    }    bool isStarting = false;    private void Start()    {      isStarting = true;      if (isStarted) return;      isStarted = true;      for (int i = 0; i < 4; i++) {        current[i].Row = current[i].Col = 0;      }      rotateCount = 0;      blockType = (BlockType)rand.Next(4);      switch (blockType) {        case BlockType.Straight:          for (int i = 0; i < 4; i++) {            current[i].Col = (MaxCol - 1) / 2;            current[i].Row = -i;          }          break;        case BlockType.T:          for (int i = 0; i < 4; i++) {            current[0].Row = 0;            current[0].Col = (MaxCol - 1) / 2;            if (i > 0) {              current[i].Row = -1;              current[i].Col = (MaxCol - 1) / 2 + (i - 2);            }          }          break;        case BlockType.Square:          for (int i = 0; i < 4; i++) {            if (i <= 1) {              current[i].Row = 0;              current[i].Col = (MaxCol - 1) / 2 + i;            } else {              current[i].Row = -1;              current[i].Col = (MaxCol - 1) / 2 + (i - 2);            }          }          break;        case BlockType.Bent:          for (int i = 0; i < 4; i++) {            if (i <= 1) {              current[i].Row = 0;              current[i].Col = (MaxCol - 1) / 2 + i;            } else {              current[i].Row = -1;              current[i].Col = (MaxCol - 1) / 2 + (i - 3);            }          }          break;      }      isStarting = false;    }    private void Init()    {      size = (Height - 50) / MaxRow;      canvas.Width = size * MaxCol;      canvas.Height = size * MaxRow;      for (int r = 0; r < MaxRow; r++) {        for (int c = 0; c < MaxCol; c++) {          rects[r, c] = new Rectangle();          rects[r, c].Width = rects[r, c].Height = size;          rects[r, c].Fill = Brushes.Gray;          rects[r, c].Stroke = Brushes.LightGray;          rects[r, c].Visibility = Visibility.Hidden;          canvas.Children.Add(rects[r, c]);          Canvas.SetLeft(rects[r, c], c * size);          Canvas.SetTop(rects[r, c], r * size);        }      }      for (int i = 0; i < 4; i++) {        current[i].Col = current[i].Row = 0;      }    }    protected override void OnRender(Draget='_blank'>wingContext drawingContext)    {      base.OnRender(drawingContext);      size = (ActualHeight - 50) / MaxRow;      canvas.Width = size * MaxCol;      canvas.Height = size * MaxRow;      ReDraw();    }    private void ReDraw()    {      if (isStarted == false) return;      for (int r = 0; r < MaxRow; r++) {        for (int c = 0; c < MaxCol; c++) {          rects[r, c].Width = rects[r, c].Height = size;          Canvas.SetLeft(rects[r, c], c * size);          Canvas.SetTop(rects[r, c], r * size);          bool hasSquare = current.Any(s => s.Col == c && s.Row + 1 == r            && rects[r, c].Visibility == Visibility.Visible)            && !current.Any(s => s.Row == r && s.Col == c);          if (down == MaxRow - 1 || hasSquare) {            top = down = 0;            isStarted = false;            backup.Clear();            ClearLines();            return;          }        }      }    }    List<int> cols = new List<int>();    List<int> rows = new List<int>();    void ClearLines()    {      cols.Clear();      rows.Clear();      bool isClear;      for (int r = 0; r < MaxRow; r++) {        for (int c = 0; c < MaxCol; c++) {          cols.Add(c);          if (c == MaxCol - 1) {            isClear = true;            foreach (var col in cols) {              if (rects[r, col].Visibility != Visibility.Visible) {                isClear = false;                break;              }            }            cols.Clear();            if (isClear) rows.Add(r);          }        }      }      foreach (var r in rows) {        for (int c = 0; c < MaxCol; c++) {          rects[r, c].Visibility = Visibility.Hidden;        }      }      foreach (var r in rows) {        for (int i = r - 1; i >= 0; i--) {          for (int j = 0; j < MaxCol; j++) {            rects[i + 1, j].Visibility = rects[i, j].Visibility;          }        }      }    }  }}

海外公司注册、海外银行开户、跨境平台代入驻、VAT、EPR等知识和在线办理：https://www.xlkjsw.com

原标题：x01.Tetris: 俄罗斯方块

关键词：