C++实现五子棋游戏的代码 |21xrx.com

C++实现五子棋游戏的代码

2023-06-25 08:50:56 深夜i -- --

C++ 五子棋游戏代码实现

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五子棋是一种非常受众多玩家喜爱的棋类游戏，它的规则简单，容易学习，但是玩起来却趣味盎然，让人乐此不疲。今天，我们来介绍一下如何使用C++语言来实现五子棋游戏的代码。

首先，我们需要定义一个棋盘类，来表示棋盘上的状态。这个类包括一个二维数组，用来存储棋盘上每个点的状态，以及一些方法来进行判断落子是否合法和判断胜负等操作。


class ChessBoard {
public:
  static const int BOARD_SIZE = 15;
  enum class BoardState
    EMPTY = 0;
  ChessBoard() {
    // 初始化棋盘上的每个点都为空
    memset(board_, (int)BoardState::EMPTY, sizeof(board_));
  }
  BoardState GetPiece(int row, int col) const {
    // 返回坐标为(row, col)的点的状态
    return board_[row][col];
  }
  void SetPiece(int row, int col, BoardState state) {
    // 设置坐标为(row, col)的点的状态为state
    board_[row][col] = state;
  }
  bool IsValidMove(int row, int col, BoardState state) const {
    // 判断落子(row, col)是否合法
    if (row < 0 || row > BOARD_SIZE - 1 || col < 0 || col > BOARD_SIZE - 1)
      // 落子位置越界
      return false;
    
    if (board_[row][col] != BoardState::EMPTY)
      // 落子位置已有棋子
      return false;
    
    // 判断落子后是否能形成更高级别的连子
    if (!IsConnected(row, col, state))
      return false;
    
    return true;
  }
  bool IsFull() const {
    // 判断棋盘是否已经下满
    for (int i = 0; i < BOARD_SIZE; ++i) {
      for (int j = 0; j < BOARD_SIZE; ++j) {
        if (board_[i][j] == BoardState::EMPTY)
          return false;
        
      }
    }
    return true;
  }
  bool IsWin(int row, int col, BoardState state) const {
    // 判断落子后是否形成了五子连珠
    return IsHorizontalConnected(row, col, state)
      || IsVerticalConnected(row, col, state)
      || IsDiagonalConnected(row, col, state);
  }
private:
  bool IsSameState(int row, int col, int d_row, int d_col, BoardState state) const {
    // 判断坐标为(row, col)的棋子和坐标为(d_row, d_col)的棋子是否为同一状态
    if (d_row < 0 || d_row > BOARD_SIZE - 1 || d_col < 0 || d_col > BOARD_SIZE - 1)
      // 棋子位置越界
      return false;
    
    if (board_[d_row][d_col] != state)
      // 棋子状态不同
      return false;
    
    if (row == d_row && col == d_col)
      // 同一位置的棋子
      return false;
    
    return true;
  }
  bool IsConnected(int row, int col, BoardState state) const {
    // 判断落子后是否能形成更高级别的连子
    for (int i = -1; i <= 1; ++i) {
      for (int j = -1; j <= 1; ++j) {
        int d_row = row + i;
        int d_col = col + j;
        if (IsSameState(row, col, d_row, d_col, state)) {
          if (IsSameState(row, col, d_row + i, d_col + j, state)) {
            if (IsSameState(row, col, d_row + i * 2, d_col + j * 2, state))
              return true;
            
          }
        }
      }
    }
    return false;
  }
  bool IsHorizontalConnected(int row, int col, BoardState state) const {
    // 判断水平方向是否有连子
    int count = 1;
    for (int i = col - 1; i >= 0; --i) {
      if (board_[row][i] == state) {
        ++count;
      }
      else
        break;
      
    }
    for (int i = col + 1; i < BOARD_SIZE; ++i) {
      if (board_[row][i] == state) {
        ++count;
      }
      else
        break;
      
    }
    return count >= 5;
  }
  bool IsVerticalConnected(int row, int col, BoardState state) const {
    // 判断竖直方向是否有连子
    int count = 1;
    for (int i = row - 1; i >= 0; --i) {
      if (board_[i][col] == state) {
        ++count;
      }
      else
        break;
      
    }
    for (int i = row + 1; i < BOARD_SIZE; ++i) {
      if (board_[i][col] == state) {
        ++count;
      }
      else
        break;
      
    }
    return count >= 5;
  }
  bool IsDiagonalConnected(int row, int col, BoardState state) const {
    // 判断对角线方向是否有连子
    int count = 1;
    for (int i = row - 1, j = col - 1; i >= 0 && j >= 0; --i, --j) {
      if (board_[i][j] == state) {
        ++count;
      }
      else
        break;
      
    }
    for (int i = row + 1, j = col + 1; i < BOARD_SIZE && j < BOARD_SIZE; ++i, ++j) {
      if (board_[i][j] == state) {
        ++count;
      }
      else
        break;
      
    }
    if (count >= 5)
      return true;
    
    count = 1;
    for (int i = row - 1, j = col + 1; i >= 0 && j < BOARD_SIZE; --i, ++j) {
      if (board_[i][j] == state) {
        ++count;
      }
      else
        break;
      
    }
    for (int i = row + 1, j = col - 1; i < BOARD_SIZE && j >= 0; ++i, --j) {
      if (board_[i][j] == state) {
        ++count;
      }
      else
        break;
      
    }
    return count >= 5;
  }
  BoardState board_[BOARD_SIZE][BOARD_SIZE];
};

接下来，我们需要定义一个游戏类，来控制游戏流程。这个类包括一个棋盘对象和一些方法来控制落子、切换玩家、打印棋盘等操作。


class GomokuGame {
public:
  GomokuGame()
    player_ = ChessBoard::BoardState::BLACK;
  
  ChessBoard& GetChessBoard()
    return board_;
  
  void SwitchPlayer() {
    if (player_ == ChessBoard::BoardState::BLACK)
      player_ = ChessBoard::BoardState::WHITE;
    
    else
      player_ = ChessBoard::BoardState::BLACK;
    
  }
  ChessBoard::BoardState GetPlayer() const
    return player_;
  
  void PlayOneMove(int row, int col) {
    // 在坐标为(row, col)的点落子
    board_.SetPiece(row, col, player_);
  }
  bool IsGameOver(int row, int col) const {
    // 判断游戏是否结束
    if (board_.IsWin(row, col, player_))
      return true;
    
    if (board_.IsFull())
      return true;
    
    return false;
  }
  void PrintBoard() const {
    // 打印棋盘
    std::cout << " ";
    for (int i = 0; i < ChessBoard::BOARD_SIZE; ++i) {
      std::cout << char('a' + i) << ' ';
    }
    std::cout << '\n';
    for (int i = 0; i < ChessBoard::BOARD_SIZE; ++i) {
      std::cout << i + 1 << ' ';
      for (int j = 0; j < ChessBoard::BOARD_SIZE; ++j) {
        char c = '.';
        if (board_.GetPiece(i, j) == ChessBoard::BoardState::BLACK)
          c = 'X';
        
        else if (board_.GetPiece(i, j) == ChessBoard::BoardState::WHITE)
          c = 'O';
        
        std::cout << c << ' ';
      }
      std::cout << '\n';
    }
    std::cout << std::endl;
  }
private:
  ChessBoard board_;
  ChessBoard::BoardState player_;
};

最后，我们来使用这些类来实现一个完整的五子棋游戏。


int main()
{
  GomokuGame game;
  while (true) {
    game.PrintBoard();
    std::cout << "Player " << (game.GetPlayer() == ChessBoard::BoardState::BLACK ? "X" : "O")
      << "'s turn:\n";
    std::string move;
    std::cin >> move;
    if (move == "exit")
      break;
    
    if (move.size() == 2) {
      int row = move[1] - '1';
      int col = move[0] - 'a';
      if (game.GetChessBoard().IsValidMove(row, col, game.GetPlayer())) {
        game.PlayOneMove(row, col);
        if (game.IsGameOver(row, col)) {
          game.PrintBoard();
          std::cout << "Player " << (game.GetPlayer() == ChessBoard::BoardState::BLACK ? "X" : "O")
            << " wins!\n";
          break;
        }
        game.SwitchPlayer();
      }
      else
        std::cout << "Invalid move!" << std::endl;
      
    }
    else
      std::cout << "Invalid input!" << std::endl;
    
  }
  return 0;
}

现在，我们就可以愉快地玩起这个五子棋游戏了。只需要在命令行输入落子的坐标，就可以和电脑或者其他玩家对战了。当你落下五个连续的棋子时，就赢得了比赛的胜利。

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