学习完java事件处理......老师要求写个乞丐版扫雷......作为一只前端dog果断不能怂阿,于是......

硬着头皮写出来了,参考了如下三份代码:

先把代码贴出来,需要注意的东西都写在注释里了,有空把教程写出来

package sixth;

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class MineClearance {

static private int midtime = 3600,mineNum = 0;/* 倒计时时间以及可用旗子数 */

private static ImageIcon face = new
ImageIcon("E:\\project\\JAVA\\test\\demo\\face.jpg");/* 小黄脸图标 */

static private JLabel label1,label2;/* 提示文字 */

static private GamePanel gp;/* 雷区 */

MineClearance(){

/* 绘制窗口 */

JFrame f = new JFrame("扫雷");

f.setBounds(600,200,500,600);

f.setDefaultCloseOperation(3);

f.setLayout(null);

label1 = new JLabel("剩余时间:" +(midtime / 60 / 60 % 60) + ":"+ (midtime / 60 %
60)+ ":" +(midtime % 60));

label1.setBounds(10,20,120,20);

f.add(label1);

/* 显示旗子数 */

label2 = new JLabel("剩余:"+mineNum);

label2.setBounds(400,20,120,20);

f.add(label2);

/* 重置按钮 */

JButton bt = new JButton(face);

bt.setBounds(230, 15,30,30);

bt.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

f.dispose();

midtime = 3600;

new MineClearance();

}

});

f.add(bt);

/* 绘制雷区 */

gp = new GamePanel(20,20);

gp.setBounds(40,100,400,400);

f.add(gp);

/* 显示界面 */

f.setVisible(true);

}

/* 倒计时线程 */

static class CountDown extends Thread{

public void run(){

while (midtime > 0){

try{

-- midtime;

label1.setText("剩余时间:" +(midtime / 60 / 60 % 60) + ":"+ (midtime / 60 % 60)+
":" +(midtime % 60));

this.sleep(1000);

}catch (Exception e){

System.out.println("错误:" + e.toString());

}

}

if(midtime == 0) {

gp.showBomb();

JOptionPane.showMessageDialog(null,"时间已到","游戏结束",JOptionPane.PLAIN_MESSAGE);

}

}

}

public static void main(String[] args){

new MineClearance();

/* 倒计时 */

CountDown cd = new CountDown();

cd.start();

}

/* 修改旗子数 */

public static void setMineNum(int i){

mineNum = i;

label2.setText("剩余:"+mineNum);

}

}

class GamePanel extends JPanel {

private int rows, cols, bombCount,flagNum;

private final int BLOCKWIDTH = 20;

private final int BLOCKHEIGHT = 20;

private JLabel[][] label;

private boolean[][] state;

private Btn[][] btns;

private byte[][] click;

private static ImageIcon flag = new
ImageIcon("E:\\project\\JAVA\\test\\demo\\flag.jpg");

private static ImageIcon bomb = new
ImageIcon("E:\\project\\JAVA\\test\\demo\\bomb.jpg");

private static ImageIcon lucency = new
ImageIcon("E:\\project\\JAVA\\test\\demo\\lucency.png");

/* 构造雷区 */

public GamePanel(int row, int col) {

rows = row;/* 行数 */

cols = col;/* 列数 */

bombCount = rows * cols / 10; /* 地雷数 */

flagNum = bombCount;/* 标记数(用于插旗) */

label = new JLabel[rows][cols];

state = new boolean[rows][cols];/* 用于存储是否有地雷 */

btns = new Btn[rows][cols];

click = new byte[rows][cols];/* 用于存储按钮点击状态(0-未点击,1-已点击,2-未点击但周围有雷,3-插旗) */

MineClearance.setMineNum(flagNum);

setLayout(null);

initLable();

randomBomb();

writeNumber();

randomBtn();

}

public void initLable() {

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

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

JLabel l = new JLabel("", JLabel.CENTER);

// 设置每个小方格的边界

l.setBounds(j * BLOCKWIDTH, i * BLOCKHEIGHT, BLOCKWIDTH, BLOCKHEIGHT);

// 绘制方格边框

l.setBorder(BorderFactory.createLineBorder(Color.GRAY));

// 设置方格为透明,便于我们填充颜色

l.setOpaque(true);

// 背景填充为黄色

l.setBackground(Color.lightGray);

// 将方格加入到容器中(即面板JPanel)

this.add(l);

// 将方格存到类变量中,方便公用

label[i][j] = l;

label[i][j].setVisible(false);

}

}

}

/* 绘制地雷 */

private void randomBomb() {

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

int rRow = (int) (Math.random() * rows);

int rCol = (int) (Math.random() * cols);

label[rRow][rCol].setIcon(bomb);

state[rRow][rCol] = true;/* 有地雷的格子state为真 */

}

}

/* 绘制数字 */

private void writeNumber() {

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

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

if (state[i][j]) {

continue;

}

int bombCount = 0;

/* 寻找以自己为中心的九个格子中的地雷数 */

for (int r = -1; (r + i < rows) && (r < 2); ++r) {

if (r + i < 0) continue;

for (int c = -1; (c + j < cols) && (c < 2); ++c) {

if (c + j < 0) continue;

if (state[r + i][c + j]) ++bombCount;

}

}

if (bombCount > 0) {

click[i][j] = 2;

label[i][j].setText(String.valueOf(bombCount));

}

}

}

}

/* 绘制按钮 */

private void randomBtn() {

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

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

Btn btn = new Btn();

btn.i = i;

btn.j = j;

btn.setBounds(j * BLOCKWIDTH, i * BLOCKHEIGHT, BLOCKWIDTH, BLOCKHEIGHT);

this.add(btn);

btns[i][j] = btn;

btn.addMouseListener(new MouseAdapter() {

public void mouseClicked(MouseEvent e) {

/* 左键点击 */

if(e.getButton() == MouseEvent.BUTTON1) open(btn);

/* 右键点击 */

if(e.getButton() == MouseEvent.BUTTON3) placeFlag(btn);

}

}

);

}

}

}

/* 打开这个雷区 */

private void open(Btn b){

/* 踩雷 */

if(state[b.i][b.j]){

for (int r = 0;r < rows;++r){

for(int c = 0;c < cols; ++c){

btns[r][c].setVisible(false);/* 隐藏label */

label[r][c].setVisible(true);/* 显示按钮(这里只有隐藏了按钮才能显示按钮下面的label) */

}

}

JOptionPane.showMessageDialog(null,"您失败了","游戏结束",JOptionPane.PLAIN_MESSAGE);

}else /* 没有踩雷 */{

subopen(b);

}

}

/* 递归打开周边雷区 */

private void subopen(Btn b){

/* 有雷,不能打开 */

if(state[b.i][b.j]) return;

/* 打开过的和插旗的,不用打开 */

if(click[b.i][b.j] == 1 || click[b.i][b.j] == 4) return;

/* 周围有雷的,只打开它 */

if(click[b.i][b.j] == 2) {

b.setVisible(false);

label[b.i][b.j].setVisible(true);

click[b.i][b.j] = 1;

return;

}

/* 打开当前这个按钮 */

b.setVisible(false);

label[b.i][b.j].setVisible(true);

click[b.i][b.j] = 1;

/* 递归检测周边八个按钮 */

for (int r = -1; (r + b.i < rows) && (r < 2); ++r) {

if (r + b.i < 0) continue;

for (int c = -1; (c + b.j < cols) && (c < 2); ++c) {

if (c + b.j < 0) continue;

if (r==0 && c==0) continue;

Btn newbtn = btns[r + b.i][c + b.j];

subopen(newbtn);

}

}

}

/* 插旗 */

private void placeFlag(Btn b){

/* 只能插和地雷数相同数目的旗子 */

if(flagNum>0){

/* 插过旗的,再点一次取消 */

if(click[b.i][b.j] == 3){

if(label[b.i][b.j].getText() == "[0-9]") click[b.i][b.j] = 2;

else click[b.i][b.j] = 0;

b.setIcon(lucency);

++ flagNum;

MineClearance.setMineNum(flagNum);

}else /* 未插旗的,插旗 */{

b.setIcon(flag);

click[b.i][b.j] = 3;

-- flagNum;

MineClearance.setMineNum(flagNum);

}

/* 把所有旗子插完了,检测是否成功 */

if(flagNum == 0){

boolean flagstate = true;

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

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

if (click[i][j] != 3 && state[i][j]) flagstate = false;

}

}

if(flagstate)
JOptionPane.showMessageDialog(null,"您成功了","游戏结束",JOptionPane.PLAIN_MESSAGE);

}

}else /* 旗子用完了,不能插 */{

JOptionPane.showMessageDialog(null,"标记已用尽","错误操作",JOptionPane.PLAIN_MESSAGE);

}

}

/* 显示雷区 */

public void showBomb(){

for (int r = 0;r < rows;++r){

for(int c = 0;c < cols; ++c){

btns[r][c].setVisible(false);/* 隐藏label */

label[r][c].setVisible(true);/* 显示按钮(这里只有隐藏了按钮才能显示按钮下面的label) */

}

}

}

}

class Btn extends JButton{

public int i,j;

}

需要用到的素材:

 bomb.jpg -- 用于显示炸弹

 face.jpg -- 顶部中间那个酷酷的重置按钮

 flag.jpg -- 插的旗子

 luncecy.png -- 你什么都看不到?那就对了,这是张纯透明的图片,用于再次右键有旗子的按钮时把旗子替换成透明的

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