Swing动画之游戏角色

一、动画效果：实现了飞机飞行的动画效果，也实现了飞机的移动。

二、实现原理：

1.飞机飞行 的效果：事实上也还是重写 paintComponent, 依照一定的时间间隔更换图片就有了飞行的效果 ， 动画就是更换图片 。

2.移动飞机：实现KeyListener这个接口，这个接口能够接收键盘的事件。用这个面板容器去监听些事件。

三、代码：

package com.jack;

import java.awt.GridLayout;

import java.awt.List;

import javax.swing.JFrame;

/**

 *

 * @author laughing

 * @date 2014年11月16日 下午8:11:39

 */

public class Main extends JFrame {

	GamePanel	panel	= new GamePanel();

	public Main() {

		setSize(panel.getWidth(), panel.getHeight());

		getContentPane().add(panel);

		setVisible(true);

		setResizable(false);

		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		setLocationRelativeTo(this);

	}

	public static void main(String args[]) {

		new Main();

	}

}

package com.jack;

import java.awt.Color;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.Image;

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

import java.io.IOException;

import javax.imageio.ImageIO;

import javax.swing.JPanel;

import javax.swing.border.SoftBevelBorder;

/**

 *

 * @author laughing

 *

 * @date 2014年11月16日 下午7:58:11

 */

public class GamePanel extends JPanel implements Runnable, KeyListener {

	private static final int	HEIGHT	= 480;

	private static final int	WEIGHT	= 320;

	Image[]						plans	= new Image[6];

	int							pos		= 0;

	int							x		= WEIGHT / 2;

	int							y		= 408;

	final int					step	= 10;

	public GamePanel() {

		setSize(WEIGHT, HEIGHT);

		setBorder(new SoftBevelBorder(1, Color.white, Color.white));

		// Sets the focusable state of this Component to the specified value.

		// This value overrides the Component's default focusability.

		setFocusable(true);

		// 监听事件

		addKeyListener(this);

		new Thread(this).start();

	}

	/*

	 * (non-Javadoc)

	 *

	 *

	 *

	 * @see javax.swing.JComponent#paintComponent(java.awt.Graphics)

	 */

	@Override

	protected void paintComponent(Graphics g0) {

		// TODO Auto-generated method stub

		super.paintComponent(g0);

		Graphics2D g = (Graphics2D) g0;

		try {

			for (int i = 0; i < 6; i++) {

				plans[i] = ImageIO.read(this.getClass()

											.getResource("../../images/plan_" + i + ".png"));

			}

			g.drawImage(plans[pos], x, y, this);

		} catch (IOException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}

	}

	/*

	 * (non-Javadoc)

	 *

	 * @see java.lang.Runnable#run()

	 */

	@Override

	public void run() {

		// TODO Auto-generated method stub

		while (true) {

			try {

				pos++;

				if (pos == 5)

					pos = 0;

				Thread.sleep(100);

			} catch (InterruptedException e) {

				// TODO Auto-generated catch block

				e.printStackTrace();

			}

			repaint();

		}

	}

	/*

	 * (non-Javadoc)

	 *

	 * @see java.awt.event.KeyListener#keyTyped(java.awt.event.KeyEvent)

	 */

	@Override

	public void keyTyped(KeyEvent e) {

		// TODO Auto-generated method stub

	}

	/*

	 * (non-Javadoc)

	 *

	 * @see java.awt.event.KeyListener#keyPressed(java.awt.event.KeyEvent)

	 */

	@Override

	public void keyPressed(KeyEvent e) {

		int key = e.getKeyCode();

		if (key == KeyEvent.VK_UP) {

			if (y - step >= 0) {

				y -= step;

			}

		}

		if (key == KeyEvent.VK_DOWN) {

			if (y + step <= HEIGHT - plans[0].getHeight(null) * 2) {

				y += step;

			}

		}

		if (key == KeyEvent.VK_LEFT) {

			if (x - step >= 0)

				x -= step;

		}

		if (key == KeyEvent.VK_RIGHT) {

			if (x + step < WEIGHT - plans[0].getWidth(null))

				x += step;

		}

	}

	/*

	 * (non-Javadoc)

	 *

	 * @see java.awt.event.KeyListener#keyReleased(java.awt.event.KeyEvent)

	 */

	@Override

	public void keyReleased(KeyEvent e) {

		// TODO Auto-generated method stub

	}

}

四、源代码下载：

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