package 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 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 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);
}
}
}
4.Ground类
package 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;
}
}
}