首先创建一个新的Java项目命名为“飞翔的鸟”,并在src中创建一个包命名为“com.qiku.bird",在这个包内分别创建4个类命名为“Bird”、“BirdGame”、“Column”、“Ground”,并向需要的图片素材导入到包内。
- package com.qiku.bird;
-
- import javax.imageio.ImageIO;
- import java.awt.image.BufferedImage;
- import java.io.IOException;
-
- /*
- * 小鸟类
- * */
- public class Bird {
- int x;// 坐标
- int y;
- int width; // 宽高
- int height;
- BufferedImage image; // 图片
- BufferedImage[] images; // 小鸟所有图片
-
- public Bird() {
- // 初始化数组 保存八张图片
- images = new BufferedImage[8];
- // 使用循环结构 将小鸟所有图片 存入数组
- for (int i = 0; i < images.length; i++) {
- try {
- images[i] = ImageIO.read(Bird.class.getResourceAsStream(i + ".png"));
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- image = BirdGame.bird_image;
- width = image.getWidth();
- height = image.getHeight();
- x = 120;
- y = 240;
- }
-
- // 小鸟飞翔的方法
- int index = 0;
-
- public void fly() {
- image = images[index % images.length];
- index++;
- }
-
- // h = v * t + g * t * t / 2
- int g = 6; //重力加速度
- double t = 0.15; // 下落时间
- double v = 0; // 初速度
- double h = 0; // 下落距离
-
- //小鸟下落一次
- public void down() {
- h = v * t + g * t * t / 2; // 具体下落的距离
- v = v + g * t; // 末速度 = 当前速度 + 重力加速度 * 时间
- y += (int) h;
- }
-
- // 小鸟向上飞
- public void up() {
- // 给一个 负方向的初速度
- v = -30;
- }
- /*
- * 小鸟撞地面
- * */
- public boolean hitGround(Ground ground) {
- boolean isHit = this.y + this.height >= ground.y;
- return isHit;
- }
-
- // 小鸟撞天花板
- public boolean hitCeiling() {
- boolean isHit = this.y <= 0;
- return isHit;
- }
-
- // 小鸟撞柱子
- public boolean hitColumn(Column c) {
- boolean b1 = this.x + this.width >= c.x;
- boolean b2 = this.x <= c.x + c.width;
- boolean b3 = this.y <= c.y + c.height / 2 - c.gap / 2;
- boolean b4 = this.y + this.height >= c.y + c.height / 2 + c.gap / 2;
- // 满足b1 b2表示水平方向 相撞 b1 b2 b3 同时满足 撞上柱子 b1 b2 b4 同时满足撞下柱子
- return b1 && b2 && (b3 || b4);
-
- }
-
- }
- package com.qiku.bird;
- import javax.imageio.ImageIO;
- import javax.swing.*;
-
- import java.awt.*;
- import java.awt.event.KeyAdapter;
- import java.awt.event.KeyEvent;
- import java.awt.event.MouseAdapter;
- import java.awt.event.MouseEvent;
- import java.awt.image.BufferedImage;
- import java.io.IOException;
-
- /**
- * 游戏启动类
- * 使用extends 关键字 继承JPanel 画板类 ==> 于是BirdGame 就具备了画板类的功能
- */
- public class BirdGame extends JPanel {
- // 定义游戏状态
- public static final int START = 0; // 开始
- public static final int RUNNING = 1; // 运行
- public static final int GAME_OVER = 2; // 结束
- // 游戏当前状态 默认0 开始状态
- int state = START;
- int score = 0; //玩家得分
-
- static BufferedImage bg = null; // 背景图片
- static BufferedImage start = null; //开始图片
- static BufferedImage ground_image = null; // 地面
- static BufferedImage bird_image = null; // 小鸟
- static BufferedImage column_image = null; // 柱子
- static BufferedImage gameOver_image = null; // game游戏
-
- // 静态代码块 一般用于加载静态资源(视频,音频,图片等)
- static {
- // 将本地的图片bg.png读取到程序中的bg
- try {
- bg = ImageIO.read(BirdGame.class.getResourceAsStream("bg.png"));
- start = ImageIO.read(BirdGame.class.getResourceAsStream("start.png"));
- ground_image = ImageIO.read(BirdGame.class.getResourceAsStream("ground.png"));
- column_image = ImageIO.read(BirdGame.class.getResourceAsStream("column.png"));
- bird_image = ImageIO.read(BirdGame.class.getResourceAsStream("0.png"));
- gameOver_image = ImageIO.read(BirdGame.class.getResourceAsStream("gameover.png"));
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
-
- Ground ground;//声明地面
- Bird bird;
- Column column1;
- Column column2;
-
- // BirdGame 的构造方法
- public BirdGame() {
- bird = new Bird();
- ground = new Ground();
- column1 = new Column();
- column2 = new Column();
- // 柱子2的x坐标 = 柱子1的坐标基础上+244保持水平间距
- column2.x = column1.x + column1.distance;
-
- }
-
- /*
- * 用于在画板上绘制内容的方法
- * 想在画板上显示什么 在这个方法写就行了
- * @param g 画笔
- * */
- @Override
-
- public void paint(Graphics g) {
- // g.fillRect(0,0,100,200); // 设置颜色落笔点 宽高
- g.drawImage(bg, 0, 0, null); // 画背景
- if (state == START) {
- g.drawImage(start, 0, 0, null); // 开始图片
- }
- g.drawImage(column1.image, column1.x, column1.y, null); // 画柱子
- g.drawImage(column2.image, column2.x, column2.y, null); // 画柱子2
- g.drawImage(bird.image, bird.x, bird.y, null); //小鸟图片
- g.drawImage(ground.image, ground.x, ground.y, null); // 地面图片
- if (state == GAME_OVER) {
- g.drawImage(gameOver_image, 0, 0, null); // 结束图片
-
- }
- // 画分数
- Font font = new Font("微软雅黑", Font.BOLD, 25); // 创建字体
- g.setFont(font); // 给画笔设置字体
- g.setColor(Color.BLACK); // 设置字体黑色颜色
- g.drawString("分数: " + score, 30, 50);
- g.setColor(Color.WHITE); // 设置字体白色颜色
- g.drawString("分数: " + score, 28, 48);
- }
-
- // 判断小鸟与柱子是否相撞 游戏结束
- public boolean isGameOver() {
- boolean isHit = bird.hitGround(ground) || bird.hitCeiling() || bird.hitColumn(column1) || bird.hitColumn(column2);
- return isHit;
- }
-
-
- // 游戏流程控制的方法
- public void action() throws Exception {
- frame.addKeyListener(new KeyAdapter() {
- @Override
- public void keyPressed(KeyEvent e) {
- System.out.println(e.getKeyCode());
- if(e.getKeyCode() == 32){
- if (state == START) { // 如果是开始状态 单击转换运行
- state = RUNNING;
- }
-
- if (state == RUNNING) {
- bird.up(); //小鸟上升
- }
- if (state == GAME_OVER) {
- bird = new Bird();
- column1 = new Column();
- column2 = new Column();
- column2.x = column1.x + column1.distance;
- score = 0;
- state = START;
- }
- }
- }
- });
-
-
- // 给当前对象()添加鼠标单击事件
- this.addMouseListener(new MouseAdapter() {
- @Override
- public void mouseClicked(MouseEvent e) { // 鼠标单击执行代码
- if (state == START) { // 如果是开始状态 单击转换运行
- state = RUNNING;
- }
-
- if (state == RUNNING) {
- bird.up(); //小鸟上升
- }
- if (state == GAME_OVER) {
- bird = new Bird();
- column1 = new Column();
- column2 = new Column();
- column2.x = column1.x + column1.distance;
- score = 0;
- state = START;
- }
-
- }
- });
-
- // 死循环 {}的代码会一直反复执行
- while (true) {
- if (state == START) {
- ground.step(); // 地面移动
- bird.fly(); // 小鸟飞翔
- } else if (state == RUNNING) {
- ground.step(); // 地面移动
- column1.step(); // 柱子1移动
- column2.step(); // 柱子2移动
- bird.fly(); // 小鸟飞翔
- bird.down(); // 小鸟下落
- if (isGameOver() == true) {
- state = GAME_OVER;
- }
- // 设置增加分数
- if (bird.x == column1.x + column1.width + 1 || bird.x == column2.x + column2.width + 1) {
- score +=5;
- }
- }
-
- repaint(); //重画 即重新执行paint 方法
- Thread.sleep(10); //每隔10毫秒,让程序休眠一次
- }
- }
- static JFrame frame = new JFrame();
- // main方法 - 程序的入口(即:有main方法 程序才能运行)
- public static void main(String[] args) throws Exception {
- BirdGame game = new BirdGame(); // 创建画板对象
- frame.setSize(432, 644);//设置宽高
- frame.setLocationRelativeTo(null); // 居中显示
- frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // 设置关闭窗口,同时使程序结束
- frame.setVisible(true); //设置可见性
- frame.add(game); // 将画板放到画框上
- frame.setTitle("飞翔的小鸟");// 设置标题
- frame.setResizable(false);// 设置不允许玩家拖动界面
-
- // 调用action
- game.action();
- }
-
- }
- package com.qiku.bird;
-
- import java.awt.image.BufferedImage;
-
- /*
- * 柱子类
- * */
- public class Column {
- int x;// 坐标
- int y;
- int width; // 宽高
- int height;
- BufferedImage image; // 图片
- int gap; //上下柱子之间的间隙
- int distance; //水平方向柱子之间的距离
- int min = -(1200 / 2 - 144 / 2);
- int max = 644 - 146 - 144 / 2 - 1200 / 2;
-
- public Column() {
- gap = 144;
- distance = 244;
- image = BirdGame.column_image;
- width = image.getWidth();
- height = image.getHeight();
- x = BirdGame.bg.getWidth();
- y = (int) (Math.random() * (max - min) + min);
-
- }
-
- public void step() {
- x--;
- if (x <= -width) {
- x = BirdGame.bg.getWidth();
- y = (int) (Math.random() * (max - min) + min);
- }
- }
- }
-
- package com.qiku.bird;
-
- import java.awt.image.BufferedImage;
-
- /*
- * 地面类
- * */
- public class Ground {
- int x ;// 地面坐标
- int y ;
- int width ; // 地面的宽高
- int height;
- BufferedImage image; // 地面图片
-
- public Ground(){
- image = BirdGame.ground_image;
- x = 0;
- y = BirdGame.bg.getHeight() - image.getHeight();
-
- width = image.getWidth();
- height = image.getHeight();
- }
- /*
- * 地面走一步的方法
- * */
- public void step(){
- x--;
- if(x <= 432 - width){
- x=0;
- }
- }
- }