C++实现简单五子棋游戏

#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 15n");
 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;
}