Java 圖形影象程式設計 2
新增 影象 處理：
src 資料夾下 有 2個： package1包 和 img , 其中， img下有3幅影象。 可以執行。 複合影象。
package package1;
import java.awt.*;
import java.awt.event.*;
public class GameFrame {
public GameFrame() {
Frame app = new Frame("GameFrame");
app.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
app.setLocation(100, 100);
drawImage drawB = new drawImage();
app.add(drawB, BorderLayout.CENTER);
app.pack();
app.setVisible(true);
drawB.gameStart();
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
new GameFrame();
// TODO code application logic here
}
}
package package1;
import java.awt.*;
import java.awt.image.*;
import java.io.IOException;
import java.util.*;
import javax.imageio.ImageIO;
/**
*
* @author Administrator
*/
public class drawImage extends Panel implements Runnable {
private int width;
private int height;
private BufferedImage im;
private BufferedImage bg1, bg2, bg3;
private Graphics dbg;
private Thread gamethread;
private static final int FPS = 50;
public drawImage() {
bg1 = loadImage("/img/mountains.gif");
bg2 = loadImage("/img/houses.gif");
bg3 = loadImage("/img/trees.gif");
width = 500;
height = bg1.getHeight();
setBackground(Color.pink);
setPreferredSize(new Dimension(width, height));
}
public BufferedImage loadImage(String fnm) {
BufferedImage bim = null;
try {
bim = ImageIO.read(getClass().getResource(fnm));
} catch (IOException ex) {
System.out.println("error load image");
}
return bim;
}
public void gameStart() {
gamethread = new Thread(this);
gamethread.start();
}
public void gamePaint() {
Graphics g;
try {
g = this.getGraphics();
if (g != null && im != null) {
g.drawImage(im, 0, 0, null);
}
g.dispose();
} catch (Exception e) {
}
}
public void gameRender() {
if (im == null) {
im = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
if (im == null) {
System.out.println("im is null");
} else {
dbg = im.getGraphics();
}
}
dbg.drawImage(bg1, 0, 0, null);
dbg.drawImage(bg2, 0, 0, null);
dbg.drawImage(bg3, 0, 0, null);
}
public void gameUpdate() {
}
public void run() {
long t1,t2,dt,sleepTime;
long period=1000/FPS;
t1=System.nanoTime();
while (true) {
gameUpdate();
gameRender();
gamePaint();
t2= System.nanoTime() ;
dt=(t2-t1)/1000000L;
sleepTime = period - dt;
if(sleepTime<=0)
sleepTime=2;
try {
Thread.sleep(sleepTime);
} catch (InterruptedException ex) { }
t1 = System.nanoTime();
}
}
}
===========================================================================================
移動遊戲的符合影象:
package package1;
import java.awt.*;
import java.awt.event.*;
import javax.swing.JFrame;
public class GameFrame {
public GameFrame() {
Frame app = new Frame("GameFrame");
app.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
app.setLocation(100, 100);
gamePanel drawB = new gamePanel();
app.add(drawB, BorderLayout.CENTER);
app.pack();
app.setVisible(true);
drawB.gameStart();
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
new GameFrame();
// TODO code application logic here
}
}
package package1;
import java.awt.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.image.*;
import java.io.IOException;
import java.util.*;
import javax.imageio.ImageIO;
import javax.swing.JPanel;
/**
*
* @author Administrator
*/
public class gamePanel extends Panel implements Runnable, KeyListener {
public final static int WIDTH = 500;
public final static int HEIGHT = 360;
private BufferedImage im,im1,im2,im3;
private Graphics dbg;
private Thread gamethread;
private static final int FPS = 50;
private int imMoveSize;
private ribbon bg1, bg2, bg3;
public gamePanel() {
imMoveSize = 5;
im1=loadImage("/img/mountains.gif");
im2=loadImage("/img/houses.gif");
im3=loadImage("/img/trees.gif");
bg1 = new ribbon((int) (imMoveSize * 0.2), im1);
bg2 = new ribbon((int) (imMoveSize * 0.5), im2);
bg3 = new ribbon(imMoveSize, im3);
this.setFocusable(true);
this.requestFocus();
this.addKeyListener(this);
setBackground(Color.pink);
setPreferredSize(new Dimension(WIDTH,HEIGHT));
}
public void gameStart() {
gamethread = new Thread(this);
gamethread.start();
}
public void gamePaint() {
Graphics g;
try {
g = this.getGraphics();
if (g != null && im != null) {
g.drawImage(im, 0, 0, this);
}
g.dispose();
} catch (Exception e) {
}
}
public void gameRender() {
if (im == null) {
im = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB);
if (im == null) {
System.out.println("im is null");
} else {
dbg = im.getGraphics();
}
}
bg1.draw(dbg);
bg2.draw(dbg);
bg3.draw(dbg);
}
public void gameUpdate() {
bg1.update();
bg2.update();
bg3.update();
}
public void run() {
long t1,t2,dt,sleepTime;
long period=1000/FPS;
t1=System.nanoTime();
while (true) {
gameUpdate();
gameRender();
gamePaint();
t2= System.nanoTime() ;
dt=(t2-t1)/1000000L;
sleepTime = period - dt;
if(sleepTime<=0)
sleepTime=2;
try {
Thread.sleep(sleepTime);
} catch (InterruptedException ex) { }
t1 = System.nanoTime();
}
}
public BufferedImage loadImage(String fnm) {
try {
BufferedImage im = ImageIO.read(getClass().getResource(fnm));
return im;
} catch (IOException e) {
System.out.println("Load Image error for ");
return null;
}
}
public void keyTyped(KeyEvent e) {
}
public void keyPressed(KeyEvent e) {
int keycode = e.getKeyCode();
if (keycode == KeyEvent.VK_RIGHT) {
bg1.canMoveLeft = true;
bg2.canMoveLeft = true;
bg3.canMoveLeft = true;
}
if (keycode == KeyEvent.VK_LEFT) {
bg1.canMoveRight = true;
bg2.canMoveRight = true;
bg3.canMoveRight = true;
}
}
public void keyReleased(KeyEvent e) {
int keycode = e.getKeyCode();
if (keycode == KeyEvent.VK_RIGHT) {
bg1.canMoveLeft = false;
bg2.canMoveLeft = false;
bg3.canMoveLeft = false;
}
if (keycode == KeyEvent.VK_LEFT) {
bg1.canMoveRight = false;
bg2.canMoveRight = false;
bg3.canMoveRight = false;
}
}
}
package package1;
import java.awt.*;
import java.awt.image.BufferedImage;
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author Administrator
*/
public class ribbon {
public BufferedImage bim;
private int xImHead;
private int pWidth;
private int pHeight;
private int width;
private int moveSize;
public boolean canMoveRight;
public boolean canMoveLeft;
public ribbon(int movS, BufferedImage im) {
bim = im;
xImHead = 0;
pWidth = gamePanel.WIDTH;
pHeight = gamePanel.HEIGHT;
width = bim.getWidth();
moveSize = movS;
canMoveRight = false;
canMoveLeft = false;
}
public void draw(Graphics g) {
if (xImHead == 0) {
drawRibbon(g, bim, 0, pWidth, 0, pWidth);
}
else if ((xImHead > 0) && (xImHead < pWidth)) {
drawRibbon(g, bim, 0, xImHead, width - xImHead, width);
drawRibbon(g, bim, xImHead, pWidth, 0, pWidth - xImHead);
}
else if (xImHead >= pWidth) {
drawRibbon(g, bim, 0, pWidth, width - xImHead, width - xImHead + pWidth);
}
else if ((xImHead < 0) && (xImHead >= pWidth - width)) {
drawRibbon(g, bim, 0, pWidth, -xImHead, pWidth - xImHead);
}
else if (xImHead < pWidth - width) {
drawRibbon(g, bim, 0, width + xImHead, -xImHead, width);
drawRibbon(g, bim, width + xImHead, pWidth, 0, pWidth - width - xImHead);
}
}
private void drawRibbon(Graphics g, BufferedImage im, int dx1, int dx2,
int sx1, int sx2) {
g.drawImage(im, dx1, 0, dx2, pHeight, sx1, 0, sx2, pHeight, null);
}
public void update() {
if (canMoveRight) {
xImHead = (xImHead + moveSize) % width;
} else if (canMoveLeft) {
xImHead = (xImHead - moveSize) % width;
}
}
}