Java怎么实现五子棋小游戏

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通过判断棋盘上每个空位的分数，去分数最高的几个点，随机下棋分数计算思路：

能成5个说明能赢了，给最高分

不能成5个，对方能成5个，说明对方要赢了，给第二高分

能成活4，给第三高分

能成活3，给第四高分

能成冲4，给第五高分

能成冲3，给第六高分

能成活2，给第七高分

能成冲2，给第八高分

其他，给最低分分数设定可自己定义。

下面是AI五子棋的代码的案例:

package FivechessClient;

import Java.awt.Cursor;

import java.awt.Dimension;

import java.awt.Graphics;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.event.MouseMotionAdapter;

import java.awt.image.BufferedImage;

import java.io.File;

import java.util.ArrayList;

import java.util.Random;

import javax.imageio.ImageIO;

import javax.swing.JFrame;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

/**

*

* @ClassName: Game

* @Description: AI五子棋

* @author xiaoxiong

* @date 2015年7月3日 下午8:59:02

*

*/

public class Game {

BufferedImage table;

BufferedImage black;

BufferedImage white;

BufferedImage selected;

/**

* 棋子个数

*/

private static int BOARD_SIZE = 15;

/**

* 棋盘宽高

*/

private final int TABLE_WIDTH = 535;

private final int TABLE_HEIGHT = 536;

/**

* 棋盘15等分

*/

private final int RATE = TABLE_WIDTH / BOARD_SIZE;

/**

* 棋盘外边距

*/

private final int X_OFFSET = 5;

private final int Y_OFFSET = 6;

/**

* 棋盘

*/

private int[][] board = new int[BOARD_SIZE][BOARD_SIZE];

/**

* AI分数

*/

private int[][] computerScore = new int[BOARD_SIZE][BOARD_SIZE];

// private int[][] gamerScore = new int[BOARD_SIZE][BOARD_SIZE];

JFrame f = new JFrame("五子棋--小熊");

ChessBoard chessBoard = new ChessBoard();

private static int selectedX = -1;

private static int selectedY = -1;

private static int computerX = -1;

private static int computerY = -1;

private static boolean flagGamer = false; // 记录玩家是否赢了

private static boolean flagComputer = false; // 记录电脑是否赢了

private static int computerscore = 0; // 电脑最大分数

private static int comx, comy; // 玩家下子坐标

private final int HUO = 1;

private final int CHONG = 2;

private static int chesscou = 0;

/**

* 记录找到的分数一样的棋子，随机下这些棋子中的一个，以防步法固定

*/

private ArrayList<ChessXY> chessList = new ArrayList<ChessXY>();

Random rand = new Random();

/**

*

* @Title: initto @Description: 重置游戏 @param [url=home.php?mod=space&uid=570]@Return[/url] void @throws

*/

public void initto() {

for (int i = 0; i < BOARD_SIZE; ++i) {

for (int j = 0; j < BOARD_SIZE; ++j) {

board[i][j] = 0;

computerScore[i][j] = 100000;

}

}

chesscou = 0;

computerX = -1;

computerY = -1;

flagGamer = false;

flagComputer = false;

}

/**

*

* @Title: isRun @Description: 判断该位置是否可以走 @param @param x @param @param

* y @param @return @return boolean @throws

*/

public boolean isRun(int x, int y) {

if (board[x][y] == 0) {

return true;

}

return false;

}

/**

*

* @Title: isWin @Description: 判断下该子是否能赢 @param @param f 颜色 @param @param x

* 坐标 @param @param y @param @return @return boolean @throws

*/

public boolean isWin(int f, int x, int y) {

int i, count = 1;

boolean up, down, right, left, rup, lup, rdown, ldown;

up = down = right = left = rup = lup = rdown = ldown = true;

/**

*

* 上下

*

*/

for (i = 1; i < 5; ++i) {

if ((y + i) < BOARD_SIZE) {

if (board[x][y + i] == f && down)

count++;

else

down = false;

}

if ((y - i) >= 0) {

if (board[x][y - i] == f && up)

count++;

else

up = false;

}

}

if (count >= 5) {

return true;

}

count = 1;

/**

*

* 左右

*

*/

for (i = 1; i < 5; ++i) {

if ((x + i) < BOARD_SIZE) {

if (board[x + i][y] == f && right)

count++;

else

right = false;

}

if ((x - i) >= 0) {

if (board[x - i][y] == f && left)

count++;

else

left = false;

}

}

if (count >= 5) {

return true;

}

count = 1;

/**

*

* 左上右下

*

*/

for (i = 1; i < 5; ++i) {

if ((x + i) < BOARD_SIZE && (y + i) < BOARD_SIZE) {

if (board[x + i][y + i] == f && rdown)

count++;

else

rdown = false;

}

if ((x - i) >= 0 && (y - i) >= 0) {

if (board[x - i][y - i] == f && lup)

count++;

else

lup = false;

}

}

if (count >= 5) {

return true;

}

count = 1;

/**

*

* 右上左下

*

*/

for (i = 1; i < 5; ++i) {

if ((x + i) < BOARD_SIZE && (y - i) >= 0) {

if (board[x + i][y - i] == f && rup)

count++;

else

rup = false;

}

if ((x - i) >= 0 && (y + i) < BOARD_SIZE) {

if (board[x - i][y + i] == f && ldown)

count++;

else

ldown = false;

}

}

if (count >= 5) {

return true;

}

return false;

}

/**

*

* @Title: Computer_AI @Description: AI下棋 @param @return void @throws

*/

public void Computer_AI() {

computerscore = 0;

for (int i = 0; i < BOARD_SIZE; ++i) {

for (int j = 0; j < BOARD_SIZE; ++j) {

computerScore[i][j] = 0;

// gamerScore[i][j] = 0;

}

}

getScore();

for (int i = 0; i < BOARD_SIZE; ++i) {

for (int j = 0; j < BOARD_SIZE; ++j) {

if (computerScore[i][j] == computerscore) {

ChessXY chess = new ChessXY(i, j);

chessList.add(chess);

}

}

}

int n = rand.nextInt(chessList.size()); // 电脑根据分值一样的点随机走，防止每次都走相同的步数

comx = chessList.get(n).x;

comy = chessList.get(n).y;

chessList.clear();

}

/**

*

* @Title: getScore @Description: 评分 @param @return void @throws

*/

public void getScore() {

for (int i = 0; i < BOARD_SIZE; ++i) {

for (int j = 0; j < BOARD_SIZE; ++j) {

if (board[i][j] == 0) {

if (isWin(2, i, j)) // 电脑能赢，故给分最高，因为可以结束，所以不再检测

{

computerscore = 13;

computerScore[i][j] = 13;

return;

} else if (isWin(1, i, j)) // 电脑不能赢，玩家能赢，要阻止，所以给12分

{

computerscore = 12;

computerScore[i][j] = 12;

} else if (isHuoOrChong(2, i, j, 4, HUO)) // 电脑玩家都不能赢，电脑能形成活四，给11分

{

computerscore = (computerscore > 11 ? computerscore : 11);

computerScore[i][j] = 11;

} else if (isHuoOrChong(2, i, j, 4, CHONG)) // 电脑玩家都不能赢，电脑能形成冲四，给10分

{

computerscore = (computerscore > 10 ? computerscore : 10);

computerScore[i][j] = 10;

} else if (isHuoOrChong(1, i, j, 4, HUO)) // 电脑玩家都不能赢，玩家能形成活四，给9分

{

computerscore = (computerscore > 9 ? computerscore : 9);

computerScore[i][j] = 9;

} else if (isHuoOrChong(2, i, j, 3, HUO)) // 电脑玩家都不能赢，电脑能形成活三，给8分

{

computerscore = (computerscore > 8 ? computerscore : 8);

computerScore[i][j] = 8;

} else if (isHuoOrChong(1, i, j, 4, CHONG)) // 电脑玩家都不能赢，玩家能形成冲四，给7分

{

computerscore = (computerscore > 7 ? computerscore : 7);

computerScore[i][j] = 7;

} else if (isHuoOrChong(2, i, j, 3, CHONG)) // 电脑玩家都不能赢，电脑能形成冲三，给6分

{

computerscore = (computerscore > 6 ? computerscore : 6);

computerScore[i][j] = 6;

} else if (isHuoOrChong(2, i, j, 2, HUO)) // 电脑玩家都不能赢，电脑能形成活二，给5分

{

computerscore = (computerscore > 5 ? computerscore : 5);

computerScore[i][j] = 5;

} else if (isHuoOrChong(1, i, j, 3, CHONG)) // 电脑玩家都不能赢，玩家能形成冲三，给4分

{

computerscore = (computerscore > 4 ? computerscore : 4);

computerScore[i][j] = 4;

} else if (isHuoOrChong(1, i, j, 2, HUO)) // 电脑玩家都不能赢，玩家能形成活二，给3分

{

computerscore = (computerscore > 3 ? computerscore : 3);

computerScore[i][j] = 3;

} else if (isHuoOrChong(2, i, j, 2, CHONG)) // 电脑玩家都不能赢，电脑能形成冲二，给2分

{

computerscore = (computerscore > 2 ? computerscore : 2);

computerScore[i][j] = 2;

} else if (isHuoOrChong(1, i, j, 2, CHONG)) // 电脑玩家都不能赢，玩家能形成冲二，给1分

{

computerscore = (computerscore > 1 ? computerscore : 1);

computerScore[i][j] = 1;

} else {

computerScore[i][j] = 0;

}

}

}

}

}

/**

*

* @Title: isHuoOrChong @Description: 判断是否为活 @param @param f @param @param

* x @param @param y @param @param num @param @param

* hORc @param @return @return boolean @throws

*/

private boolean isHuoOrChong(int f, int x, int y, int num, int hORc) // 活

{

num += 1;

int i, count = 1;

boolean terminal1 = false;

boolean terminal2 = false;

boolean up, down, right, left, rup, lup, rdown, ldown;

up = down = right = left = rup = lup = rdown = ldown = true;

/**

*

* 上下

*

*/

for (i = 1; i < num; ++i) {

if ((y + i) < BOARD_SIZE) {if (board[x][y + i] == f && down)

count++;

else {

if (board[x][y + i] == 0 && down) {

terminal1 = true;

}

down = false;

}

}

if ((y - i) >= 0) {

if (board[x][y - i] == f && up)

count++;

else {

if (board[x][y - i] == 0 && up) {

terminal2 = true;

}

up = false;

}

}

}

if (count == num - 1 && hORc == HUO && terminal1 && terminal2) {

return true;

}

if (count == num - 1 && hORc == CHONG && ((terminal1 && !terminal2) || (!terminal1 && terminal2))) {

return true;

}

count = 1;

terminal1 = false;

terminal2 = false;

/* 左右 */

for (i = 1; i < num; ++i) {

if ((x + i) < BOARD_SIZE) {

if (board[x + i][y] == f && right)

count++;

else {

if (board[x + i][y] == 0 && right) {

terminal1 = true;

}

right = false;

}

}

if ((x - i) >= 0) {

if (board[x - i][y] == f && left)

count++;

else {

if (board[x - i][y] == 0 && left) {

terminal2 = true;

}

left = false;

}

}

}

if (count == num - 1 && hORc == HUO && terminal1 && terminal2) {

return true;

}

if (count == num - 1 && hORc == CHONG && ((terminal1 && !terminal2) || (!terminal1 && terminal2))) {

return true;

}

count = 1;

terminal1 = false;

terminal2 = false;

/**

*

* 左上右下

*

*/

for (i = 1; i < num; ++i) {

if ((x + i) < BOARD_SIZE && (y + i) < BOARD_SIZE) {

if (board[x + i][y + i] == f && rdown)

count++;

else {

if (board[x + i][y + i] == 0 && rdown) {

terminal1 = true;

}

rdown = false;

}

}

if ((x - i) >= 0 && (y - i) >= 0) {

if (board[x - i][y - i] == f && lup)

count++;

else {

if (board[x - i][y - i] == 0 && lup) {

terminal2 = true;

}

lup = false;

}

}

}

if (count == num - 1 && hORc == HUO && terminal1 && terminal2) {

return true;

}

if (count == num - 1 && hORc == CHONG && ((terminal1 && !terminal2) || (!terminal1 && terminal2))) {

return true;

}

count = 1;

terminal1 = false;

terminal2 = false;

/**

*

* 右上左下

*

*/

for (i = 1; i < num; ++i) {

if ((x + i) < BOARD_SIZE && (y - i) >= 0) {

if (board[x + i][y - i] == f && rup)

count++;

else {

if (board[x + i][y - i] == 0 && rup) {

terminal1 = true;

}

rup = false;

}

}

if ((x - i) >= 0 && (y + i) < BOARD_SIZE) {

if (board[x - i][y + i] == f && ldown)

count++;

else {

if (board[x - i][y + i] == 0 && ldown) {

terminal2 = true;

}

ldown = false;

}

}

}

if (count == num - 1 && hORc == HUO && terminal1 && terminal2) {

return true;

}

if (count == num - 1 && hORc == CHONG && ((terminal1 && !terminal2) || (!terminal1 && terminal2))) {

return true;

}

return false;

}

public void init() throws Exception {

table = ImageIO.read(new File("image/board.jpg"));

black = ImageIO.read(new File("image/black.gif"));

white = ImageIO.read(new File("image/white.gif"));

selected = ImageIO.read(new File("image/selected.gif"));

for (int i = 0; i < BOARD_SIZE; ++i) {

for (int j = 0; j < BOARD_SIZE; ++j) {

board[i][j] = 0;

computerScore[i][j] = 0;

}

}

chessBoard.setPreferredSize(new Dimension(TABLE_WIDTH, TABLE_HEIGHT));

chessBoard.addMouseListener(new MouseAdapter() {

public void mouseClicked(MouseEvent e) {

int xPos = (int) ((e.getX() - X_OFFSET) / RATE);

int yPos = (int) ((e.getY() - Y_OFFSET) / RATE);

// System.out.println("1 " + xPos + " " + yPos);

if (isRun(xPos, yPos)) {

flagGamer = isWin(1, xPos, yPos);

board[xPos][yPos] = 1;

chesscou++;

// do //电脑下棋，随机

// {

// comx = (rand.nextInt(535) - X_OFFSET) / RATE;

// comy = (rand.nextInt(536) - Y_OFFSET) / RATE;

// } while (!isRun(comx, comy));

if (chesscou == (BOARD_SIZE * BOARD_SIZE)) {

JOptionPane.showMessageDialog(null, "不相上下！！！\n再来一盘吧！！！", "结束", JOptionPane.ERROR_MESSAGE);

initto();

} else {

Computer_AI(); // 电脑下棋，AI算法

chesscou++;

// System.out.println("2 " + comx + " " + comy);

flagComputer = isWin(2, comx, comy);

board[comx][comy] = 2;

computerX = comx;

computerY = comy;

}

}

chessBoard.repaint();

if (flagGamer) {

JOptionPane.showMessageDialog(null, "厉害厉害！！！\n你赢了！！！", "结束", JOptionPane.ERROR_MESSAGE);

initto();

} else if (flagComputer) {

JOptionPane.showMessageDialog(null, "哈哈哈哈！！！\n你输了！！！", "结束", JOptionPane.ERROR_MESSAGE);

initto();

}

}

public void mouseExited(MouseEvent e) {

selectedX = -1;

selectedY = -1;

chessBoard.repaint();

}

});

chessBoard.addMouseMotionListener(new MouseMotionAdapter() {

public void mouseMoved(MouseEvent e) {

selectedX = (e.getX() - X_OFFSET) / RATE;

selectedY = (e.getY() - Y_OFFSET) / RATE;

chessBoard.repaint();

}

});

f.add(chessBoard);

f.setCursor(new Cursor(Cursor.HAND_CURSOR));

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

f.setResizable(false);

f.pack();

f.setVisible(true);

}

public static void main(String[] args) throws Exception {

Game game = new Game();

game.init();

}

@SuppressWarnings("serial")

class ChessBoard extends JPanel {

public void paint(Graphics g) {

g.drawImage(table, 0, 0, null);

if (selectedX >= 0 && selectedY >= 0) {

g.drawImage(selected, selectedX * RATE + X_OFFSET, selectedY * RATE + Y_OFFSET, null);

}

if (computerX >= 0 && computerY >= 0) {

g.drawImage(selected, computerX * RATE + X_OFFSET, computerY * RATE + Y_OFFSET, null);

}

for (int i = 0; i < BOARD_SIZE; ++i) {

for (int j = 0; j < BOARD_SIZE; ++j) {

if (board[i][j] == 1) {

g.drawImage(black, i * RATE + X_OFFSET, j * RATE + Y_OFFSET, null);

}

if (board[i][j] == 2) {

g.drawImage(white, i * RATE + X_OFFSET, j * RATE + Y_OFFSET, null);

}

}

}

}

}

}

class ChessXY {

int x;

int y;

public ChessXY(int x, int y) {

this.x = x;

this.y = y;

}

}

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