遊戲簡介

玩家使用鍵盤的上、下鍵來控制藍色小球的上下移動，避開所有障礙物達到終點即獲勝，類似很早很早以前三星手機上的彩虹飛遊戲和近兩三年十分火爆的Flappy Bird手遊。

遊戲截圖

程式碼實現

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("飛行球遊戲");
		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  戰  勝  利！", 320, 200);
		} else if ((x > 155 - 40 && x < 190 && y < 140) || (x > 155 - 40 && x < 190 && y > 262 - 40)) {
			g.drawString("挑  戰  失  敗！", 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

此程式碼中只給出了第一個障礙物的碰撞檢測，後續障礙物的碰撞檢測已省略。小球模擬自由落體的方式下落。