java实现简单五子棋

package crazyit;
/**Description:
 * <br>CopyRight,stc
 * <br>program 简单五子棋的设计
 * <br>Date:6.17
 * @author sunt
 * @version 1.0
 */
import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Gobang {
 
	//定义棋盘大小
	private static  int BOARD_SIZE = 15;
	//定义一个二维数组来充当棋盘
	private String[][] board;
	public void initBoard(){
		//初始化棋盘数组
		board = new String[BOARD_SIZE][BOARD_SIZE];
	
	//把每个元素赋值为“＋”
	for (int i = 0 ; i < BOARD_SIZE  ; i++)
	{
		for (int j = 0 ; j< BOARD_SIZE ; j++)
		{
			board[i][j] = "＋";
		}
	}
	}
	
	//在控制台输出棋盘的方法
	public void printBoard()
	{
		for (int i =0 ; i < BOARD_SIZE ; i++)
		{
			{
				for (int j = 0 ; j < BOARD_SIZE ; j++)
				System.out.print(board[i][j]);
			}
				System.out.print("\n");
		}
	} 
	
	//判断插入的棋子是否合法
	public boolean pd(String[][] pos , int x , int y ) {
		
		boolean isKey = true;
		if (pos[x][y] == "&" || pos[x][y] == "●") {
			isKey = false;
		}
		return isKey;
	}
	
	//封装一个可以判断五子在同一条直线上的方法
	public boolean  isWin(String[][] pos , int x , int y , String z) {
		boolean isWin = false;
		int  countY =0, countX =0;
		int temp;
		//判断在y轴是否 为五子,利用county计数但实际会多加一次自身，所以最后判断是否有5子的时候要减一
		temp = y;
		while (pos[x][temp] == z) {
			if (temp <= 0 || temp >= 14) {
				break;
			}
			--temp;
			++countY;
		} 
		temp = y;
		while (pos[x][temp] == z) {
			if (temp <= 0 || temp >= 14) {
				break;
			}
			++temp;
			++countY;
		}
		//判断在x轴是否为五子
		temp = x;
		while (pos[temp][y] == z) {
			if (temp <= 0 || temp >= 14) {
				break;
			}
			--temp;
			++countX;
		}
		temp = x;
		while (pos[temp][y] == z) {
			if (temp <= 0 || temp >= 14) {
				break;
			}
			++temp;
			++countX;
		}
		//判断从左上到右下
		int i = x , j = y;
		int countXL = 0, countXR = 0;
		while (pos[i][j] == z) {
			if (i <= 0 || i >= 14 || j <= 0 || j >= 14)
			{
				break;
			}
			--i;
			--j;
			++countXL;
		}
		i = x ;
		j = y ;
		while (pos[i][j] == z) {
			if (i <= 0 || i >= 14 || j <= 0 || j >= 14)
			{
				break;
			}
			++i;
			++j;
			++countXL;
		}
		//判断从右上到坐下
		while (pos[i][j] == z) {
			if (i <= 0 || i >= 14 || j <= 0 || j >= 14)
			{
				break;
			}
			++i;
			--j;
			++countXR;
		}
		while (pos[i][j] == z) {
			if (i <= 0 || i >= 14 || j <= 0 || j >= 14)
			{
				break;
			}
			--i;
			++j;
			++countXR;
		}
		if (countX == 5 || countY == 5 || countXL == 5 || countXR == 5)
		{
			isWin = true;
		}
		return isWin;
	}

	public static void main(String[] args) throws Exception{
		// TODO Auto-generated method stub
		Gobang gb = new Gobang();
		gb.initBoard();
		gb.printBoard();
		
		String inputstr = null;
		//读取键盘输入的方法
		InputStreamReader isr = new InputStreamReader(System.in);
		BufferedReader bfr = new BufferedReader(isr);
		//bfr.readLine()读取键盘每一行
		System.out.println("请输入您下棋的坐标，应以x,y的格式：");
	
		while ((inputstr = bfr.readLine()) != null) {
		//将用户输入的字符串以逗号作为分隔符，分隔成2个字符串
			String[] posStrArr = inputstr.split(",");
			int xPos = Integer.parseInt(posStrArr[0]);
			int yPos = Integer.parseInt(posStrArr[1]);
			
			/**电脑随机生成2个整数，作为电脑下棋的坐标，赋给board数组
			 * 1、坐标的有效性，只能是数字，不能超出棋盘范围
			 * 2、下的棋的点，不能重复下棋
			 * 3、每次下棋后，需要扫描谁赢了
			 * */
			int xcPos = (int)(Math.random() * 15);
			int ycPos = (int)(Math.random() * 15);
			boolean pd = gb.pd(gb.board, xPos - 1, yPos - 1);
			if (pd) {
				gb.board [xPos - 1][yPos - 1] = "●";
				if (gb.isWin(gb.board, xPos - 1, yPos - 1, "●")) {
					System.out.println("恭喜你赢了");
					continue;
				}
				else {
					System.out.println("请重新输入您下棋的坐标，应以x,y的格式：");
					
				}
				
			} 
			boolean pd2 = gb.pd(gb.board, xcPos - 1, ycPos - 1);
			while (pd2 == false)
			{
				 xcPos = (int)(Math.random() * 15);
				 ycPos = (int)(Math.random() * 15);
				 pd2 = gb.pd(gb.board, xcPos - 1, ycPos - 1);
			}
			gb.board [xcPos - 1][ycPos - 1] = "&";
			if (gb.isWin(gb.board, xcPos - 1, ycPos - 1, "&")) {
				
				System.out.println("你输了 ");
				continue;
			}
			gb.printBoard();
			
		}
		
	}

}