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
}
}
