c++实现五子棋

#define _CRT_SECURE_NO_WARNINGS 1

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>

using namespace std;

const int N = 15; //15*15的棋盘
const char ChessBoard = ' '; //棋盘标志
const char flag1 = 'o'; //玩家1或电脑标志
const char flag2 = 'x'; //玩家2标志

typedef struct Position{ //坐标
	int row; //行
	int col; //列
}Position;

class GoBang{ //五子棋类
public:
	GoBang(){
		InitChessBoard(); //初始化棋盘
	}
	void Play(){ //下棋
		Position Play1; //玩家1或电脑
		Position Play2; //玩家2
		while (1){
			int mode = ChoiceMode();
			while (1){
				if (mode == 1){ //电脑VS玩家
					ComputerChess(Play1, flag1); //电脑走
					if (GetVictory(Play1, 0, flag1)){ //0代表电脑，为真则表示电脑获胜
						break;
					}
					PlayChess(Play2, 2, flag2); //玩家2走
					if (GetVictory(Play2, 2, flag2)){ //2代表玩家2
						break;
					}
				}
				else{ //玩家1VS玩家2
					PlayChess(Play1, 1, flag1); //玩家1走
					if (GetVictory(Play1, 1, flag1)){ //玩家1赢
						break;
					}
					PlayChess(Play2, 2, flag2); //玩家2走
					if (GetVictory(Play2, 2, flag2)){ //玩家2赢
						break;
					}
				}
			}
			cout << "======再来一局=======" << endl;
			cout << "yes or no :";
			char s[] = "yes";
			cin >> s;
			if (strcmp(s, "no") == 0){
				break;
			}
		}
	}

protected:
	void InitChessBoard(){ //初始化棋盘
		for (int i = 0; i < N + 1; ++i){
			for (int j = 0; j < N + 1; ++j){
				_ChessBoard[i][j] = ChessBoard;
			}
		}
	}

	int ChoiceMode(){ //选择模式
		system("cls");
		//系统调用，清屏
		InitChessBoard(); //重新初始化棋盘
		cout << "*************************************************" << endl;
		cout << "******************0、退出************************" << endl;
		cout << "******************1、电脑VS玩家******************" << endl;
		cout << "******************2、玩家VS玩家******************" << endl;
		cout << "*************************************************" << endl;
		while (1){
			int i = 0;
			cout << "请选择模式：";
			cin >> i;
			if (i == 0){ //退出
				exit(1);
			}
			if (i == 1 || i == 2){
				return i;
			}
			else{
				cout << "非法输入，请重新输入！" << endl;
			}
		}
	}

	void PrintChessBoard(){ //打印棋盘
		printf(" 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15\n");
		printf(" |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|\n");
		for (int i = 1; i < N + 1; ++i)
		{
			printf("%2d ", i);
			printf("| %c | %c | %c | %c | %c | %c | %c | %c | %c | %c | %c | %c | %c | %c | %c |\n", _ChessBoard[i][1], _ChessBoard[i][2], _ChessBoard[i][3], _ChessBoard[i][4], _ChessBoard[i][5], _ChessBoard[i][6], _ChessBoard[i][7], _ChessBoard[i][8], _ChessBoard[i][9], _ChessBoard[i][10], _ChessBoard[i][11], _ChessBoard[i][12], _ChessBoard[i][13], _ChessBoard[i][14], _ChessBoard[i][15]);
			printf(" |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|\n");
		}
		cout << endl;
	}

	void ComputerChess(Position& pos, char flag){ //电脑走
		//PrintChessBoard(); //打印棋盘
		int x = 0;
		int y = 0;
		while (1){ //循环查找空位置
			x = (rand() % N) + 1; //产生从1~N的随机数
			srand((unsigned int)time(NULL));
			y = (rand() % N) + 1; //产生从1~N的随机数
			srand((unsigned int)time(NULL));
			if (_ChessBoard[x][y] == ChessBoard){ //如果这个位置为空（没有棋子），跳出循环，下棋
				break;
			}
		}
		pos.row = x;
		pos.col = y;
		_ChessBoard[pos.row][pos.col] = flag;
	}

	void PlayChess(Position& pos, int player, char flag){
		PrintChessBoard(); //打印棋盘
		while (1){
			printf("请玩家%d输入坐标：", player);
			cin >> pos.row >> pos.col;
			if (JudgeValue(pos) == 1){ //判断坐标是否合法
				break;
			}
			cout << "坐标不合法，请重新输入：" << endl;
		}
		_ChessBoard[pos.row][pos.col] = flag;
	}

	int JudgeValue(const Position& pos){ //判断坐标的合法性
		//1.在棋盘上
		if (pos.row > 0 && pos.row <= N && pos.col > 0 && pos.col <= N){
			//2.所在位置为空（没有棋子）
			if (_ChessBoard[pos.row][pos.col] == ChessBoard){
				return 1; //合法
			}
		}
		return 0; //非法
	}

	int JudgeVictory(Position pos, char flag){ //判断是否有玩家获胜（底层判断）
		int begin = 0;
		int end = 0;

		//1.判断行是否满足条件
		(pos.col - 4) > 0 ? begin = (pos.col - 4) : begin = 1;
		(pos.col + 4) > N ? end = N : end = (pos.col + 4);
		for (int i = pos.row, j = begin; j + 4 <= end; ++j){
			if (_ChessBoard[i][j] == flag && _ChessBoard[i][j + 1] == flag &&
				_ChessBoard[i][j + 2] == flag && _ChessBoard[i][j + 3] == flag &&
				_ChessBoard[i][j + 4] == flag)
				return 1;
		}
		//2.判断列是否满足条件
		(pos.row - 4) > 0 ? begin = (pos.row - 4) : begin = 1;
		(pos.row + 4) > N ? end = N : end = (pos.row + 4);
		for (int j = pos.col, i = begin; i + 4 <= end; ++i){
			if (_ChessBoard[i][j] == flag && _ChessBoard[i + 1][j] == flag &&
				_ChessBoard[i + 2][j] == flag && _ChessBoard[i + 3][j] == flag &&
				_ChessBoard[i + 4][j] == flag)
				return 1;
		}
		//3.判断主对角线是否满足条件
		int len = 0; //相对长度
		int start = 0;
		int finish = 0;
		pos.row > pos.col ? len = pos.col - 1 : len = pos.row - 1;
		if (len > 4){
			len = 4;
		}
		begin = pos.row - len; //横坐标起始位置
		start = pos.col - len; //纵坐标起始位置

		pos.row > pos.col ? len = N - pos.row : len = N - pos.col;
		if (len > 4){
			len = 4;
		}
		end = pos.row + len; //横坐标结束位置
		finish = pos.col + len; //纵坐标结束位置

		for (int i = begin, j = start; (i + 4 <= end) && (j + 4 <= finish); ++i, ++j){
			if (_ChessBoard[i][j] == flag && _ChessBoard[i + 1][j + 1] == flag &&
				_ChessBoard[i + 2][j + 2] == flag && _ChessBoard[i + 3][j + 3] == flag &&
				_ChessBoard[i + 4][j + 4] == flag)
				return 1;
		}
		//4.判断副对角线是否满足条件
		(pos.row - 1) > (N - pos.col) ? len = N - pos.col : len = pos.row - 1;
		if (len > 4){
			len = 4;
		}
		begin = pos.row - len; //横坐标起始位置
		start = pos.col + len; //纵坐标起始位置

		(N - pos.row) > (pos.col - 1) ? len = pos.col - 1 : len = N - pos.row;
		if (len > 4){
			len = 4;
		}
		end = pos.row + len; //横坐标结束位置
		finish = pos.col - len; //纵坐标结束位置 
		for (int i = begin, j = start; (i + 4 <= end) && (j - 4 >= finish); ++i, --j){
			if (_ChessBoard[i][j] == flag && _ChessBoard[i + 1][j - 1] == flag &&
				_ChessBoard[i + 2][j - 2] == flag && _ChessBoard[i + 3][j - 3] == flag &&
				_ChessBoard[i + 4][j - 4] == flag)
				return 1;
		}
		//该位置并未下棋
		for (int x = 1; x < N + 1; ++x){
			for (int y = 1; y < N + 1; ++y){
				if (_ChessBoard[x][y] == ChessBoard){
					return 0; //未下棋
				}
			}
		}
		return -1; //和局
	}

	bool GetVictory(Position& pos, int player, char flag){ //判断具体哪位玩家赢
		if (JudgeVictory(pos, flag) != 0){ //判断有无人获胜
			if (JudgeVictory(pos, flag) == 1){ //判断是否有人获胜,1表示获胜
				PrintChessBoard(); //打印棋盘
				if (player == 0){
					cout << "电脑获胜！" << endl;
				}
				else{
					printf("恭喜玩家%d获胜！\n", player);
				}
			}
			else{
				printf("和局！\n");
			}
			return true; //有人获胜
		}
		return false; //没人获胜
	}

private:
	char _ChessBoard[N + 1][N + 1]; //棋盘
};

int main(){
	GoBang g;
	g.Play();
	system("pause");
	return 0;
}