rotate image (igen)

Java kode 

 package myGame;
 
 import javax.swing.*;
 
 import myGame.obejcts.*;
 
 import java.awt.*;
 import java.awt.event.KeyEvent;
 import java.awt.event.KeyListener;
 
 import java.util.*;
 
 public class GamePanel extends JPanel implements Runnable {
     public KeyListener keyboard = new KeyboardInput();
     
     private GOKillBall bold;
     
     public GamePanel() {
         this.setPreferredSize(new Dimension(500, 500));
         this.setBackground(new Color(0, 0, 0));
         
         bold = new GOKillBall(10, 10, 2, Math.toRadians(0), "sprites\\sprite.png");
     }
     
     public void paint(Graphics g) {
         super.paint(g);
         Graphics2D g2 = (Graphics2D) g;
         
         bold.draw(g2);
     }
     
     private void processInput() {
         if(((KeyboardInput) keyboard).keydown(KeyEvent.VK_RIGHT)) {
             bold.move(GOKillBall.RIGTH);
         }
         if(((KeyboardInput) keyboard).keydown(KeyEvent.VK_LEFT)) {
             bold.move(GOKillBall.LEFT);
         }
         if(((KeyboardInput) keyboard).keydown(KeyEvent.VK_UP)) {
             bold.move(GOKillBall.UP);
         }
         if(((KeyboardInput) keyboard).keydown(KeyEvent.VK_DOWN)) {
             bold.move(GOKillBall.DOWN);
         }
         if(((KeyboardInput) keyboard).keydown(KeyEvent.VK_SPACE)) {
             bold.fireBullet();
         }
     }
     
     private void update() {
         bold.update();
     }
     
     boolean running = false;
     
     //GameLoop
     public void run() {
         running = true;
         while(running) {
             ((KeyboardInput) keyboard).poll();
             processInput();
             update();
             repaint();
             try {
                 Thread.sleep(10);
             } catch (InterruptedException e) {
                 System.out.println(e);
             }
         }
     }
 }

Java kode 

 package myGame.obejcts;
 
 import java.awt.*;
 import java.io.*;
 import java.util.*;
 
 import javax.imageio.ImageIO;
 
 public class GOKillBall {
     public static final int LEFT = 0;
     public static final int RIGTH = 1;
     public static final int UP = 2;
     public static final int DOWN = 3;
     
     private int x, y;
     private int vel;
     private double dir;
     
     private Vector<GOProjectile> bulletArray = new Vector<GOProjectile>();
     
     Image sprite;
     
     public GOKillBall(int xPos, int yPos, int velocity, double direction, String imageFilePath) {
         x = xPos;
         y = yPos;
         vel = velocity;
         dir = direction;
         try {
             sprite = ImageIO.read(new File(imageFilePath));
         }
         catch(IOException e) {
             System.out.println(e);
         }
     }
     
     public void move(int direction) {
         switch (direction) {
         case RIGTH:
             dir = Math.toRadians(0);
             x = x+vel;
             break;
         case LEFT:
             dir = Math.toRadians(180);
             x = x-vel;
             break;
         case UP:
             dir = Math.toRadians(270);
             y = y-vel;
             break;
         case DOWN:
             dir = Math.toRadians(90);
             y = y+vel;
             break;
         default:
             System.out.println("kan ikke bevæge mig i denne direction");
         break;
         }
     }
     
     public void fireBullet() {
         bulletArray.add(new GOProjectile(x, y, 5, 0, "sprites\\bullet.png"));
     }
     
     public void draw(Graphics2D g2) {
         g2.rotate(dir, (x + sprite.getWidth(null)/2), (y + sprite.getHeight(null)/2));
         g2.drawImage(sprite, x, y, null);
         
         for(Iterator<GOProjectile> i = bulletArray.iterator(); i.hasNext();) {
             GOProjectile temp = i.next();
             temp.draw(g2);
         }
     }
     
     public void update() {
         
     }
 }

Java kode 

 package myGame.obejcts;
 
 import java.awt.Graphics2D;
 import java.awt.Image;
 import java.io.*;
 
 import javax.imageio.ImageIO;
 
 public class GOProjectile {
     public static final int LEFT = 0;
     public static final int RIGTH = 1;
     public static final int UP = 2;
     public static final int DOWN = 3;
     
     private int x, y;
     private int vel;
     private double dir;
     
     Image sprite;
     
     public GOProjectile(int xPos, int yPos, int velocity, double direction, String ImageFilePath) {
         x = xPos;
         y = yPos;
         vel = velocity;
         dir = direction;
         try {
             sprite = ImageIO.read(new File(ImageFilePath));
         }
         catch(IOException e) {
             System.out.println(e);
         }
     }
     
     public void move() {
         if(dir == Math.toRadians(0)) {
             x = x + vel;
         }
         else if(dir == Math.toRadians(180)) {
             x = x - vel;
         }
         else if(dir == Math.toRadians(270)) {
             y = y - vel;
         }
         else if(dir == Math.toRadians(90)) {
             y = y + vel;
         }
         else {
             System.out.println("WTF en wierd direction du har sendt mig ud på ZOMG!!!");
         }
     }
     
     public void draw(Graphics2D g2) {
         g2.rotate(dir, (x + sprite.getWidth(null)/2), (y + sprite.getHeight(null)/2));
         g2.drawImage(sprite, x, y, null);
     }
 }

rotate() funktionen gør intet andet end at ændre graphics objektets affine transform, så det burde ikke være nødvendigt at bruge den direkte.