Java飞行球游戏零基础快速入门

游戏简介

玩家使用键盘的上、下键来控制蓝色小球的上下移动，避开所有障碍物达到终点即获胜，类似很早很早以前三星手机上的彩虹飞游戏和近两三年十分火爆的Flappy Bird手游。

 

游戏截图

 

代码实现

import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class FlyBallGame extends JFrame {

MyPanel jp = null;

void initJFrame() {
jp = new MyPanel();
this.add(jp);
this.addKeyListener(jp);
this.setTitle("飞行球游戏");
this.setSize(700, 425);
this.setLocation(100, 100);
this.setResizable(false);
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
new PaintThread().start();
}

class PaintThread extends Thread {
public void run() {
while (true) {
repaint();
try {
Thread.sleep(40);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}

public static void main(String[] args) {
FlyBallGame game = new FlyBallGame();
game.initJFrame();
}
}

class MyPanel extends JPanel implements KeyListener {
Image imageBall = Toolkit.getDefaultToolkit().getImage("image/ball.png");
Image imageBG = Toolkit.getDefaultToolkit().getImage("image/background.jpg");
double x = 10.0;
double y = 180.0;
double time = 0.0;

public void paint(Graphics g) {
super.paint(g);
g.drawImage(imageBG, 0, 0, null);
g.drawImage(imageBall, (int) x, (int) y, 40, 40, null);
if (x > 700 - 40) {
g.drawString("挑  战  胜  利！", 320, 200);
} else if ((x > 155 - 40 && x < 190 && y < 140) || (x > 155 - 40 && x < 190 && y > 262 - 40)) {
g.drawString("挑  战  失  败！", 320, 200);
} else {
x += 2.0;
y += 0.5 * 9.8 * time * time;
time += 0.02;
}
}

public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_UP) {
y -= 2.0;
time = 0.0;
} else if (e.getKeyCode() == KeyEvent.VK_DOWN) {
y += 2.0;
time = 0.0;
}
repaint();
}

@Override
public void keyReleased(KeyEvent e) {
// TODO Auto-generated method stub

}

@Override
public void keyTyped(KeyEvent e) {
// TODO Auto-generated method stub

}
}

PS

此代码中只给出了第一个障碍物的碰撞检测，后续障碍物的碰撞检测已省略。小球模拟自由落体的方式下落。