Я создаю программу для школьного проекта. Это фанатская программа Pokémon, и у меня возникли небольшие проблемы с пониманием того, как менять изображения в зависимости от нажатия клавиш.

Вот код для класса символов

import java.awt.Image;
import java.awt.event.KeyEvent;
import java.io.*;                        //the File class
import java.util.*;                     //the Scanner class
import javax.swing.ImageIcon;
import javax.swing.JPanel;
import java.awt.image.*;


import javax.swing.ImageIcon;

public class MainCharacter {

  private Image up, up1, up2, down, down1, down2, left, left1, left2, right, right1, right2;


  private void loadImages() {


     up = new ImageIcon("Up.png").getImage();
     up1 = new ImageIcon("Up1.png").getImage();
     up2 = new ImageIcon("Up2.png").getImage();
     down = new ImageIcon("Down.png").getImage();
     down1 = new ImageIcon("Down1.png").getImage();
     down2= new ImageIcon("Down2.png").getImage();
     left = new ImageIcon("Left.png").getImage();
     left1 = new ImageIcon("Left1.png").getImage();
     left2 = new ImageIcon("Left2.png").getImage();
     right = new ImageIcon("Right.png").getImage();
     right1 = new ImageIcon("Right1.png").getImage();
     right2 = new ImageIcon("Right2.png").getImage();

  }










/*public Image getImage() 
{
     //dont know what to return here
}
*/


  public void keyPressed(KeyEvent e) {

     int key = e.getKeyCode();

     if (key == KeyEvent.VK_LEFT) {

     //dont know what to do

     }

     if (key == KeyEvent.VK_RIGHT) {
        //dont know what to do

     }


     if (key == KeyEvent.VK_UP) {

        //dont know what to do
     }

     if (key == KeyEvent.VK_DOWN) {
        //dont know what to do
     }
  }

  public void keyReleased(KeyEvent e) {
     int key = e.getKeyCode();

     if (key == KeyEvent.VK_LEFT) {
        //dont know what to do
     }

     if (key == KeyEvent.VK_RIGHT) {
        //dont know what to do
     }

     if (key == KeyEvent.VK_UP) {
        //dont know what to do
     }

     if (key == KeyEvent.VK_DOWN) {
        //dont know what to do
     }
  }
}

Вот класс, в котором он движется вместе с картой:

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import javax.swing.JPanel;
import javax.swing.Timer;


public class MapMovement extends JPanel implements ActionListener {

private Timer timer;
private Map map;
 private MainCharacter mainCharacter;

public MapMovement() {

    addKeyListener(new TAdapter());
    setFocusable(true);
    setBackground(Color.BLACK);
    setDoubleBuffered(true);

    map = new Map();

    timer = new Timer(5, this);
    timer.start();
}


public void paint(Graphics g) {
    super.paint(g);

    Graphics2D g2d = (Graphics2D)g;
    g2d.drawImage(map.getImage(), map.getX(), map.getY(), 1000, 1500, this);

    Toolkit.getDefaultToolkit().sync();
    g.dispose();
}


public void actionPerformed(ActionEvent e) {


      map.move();
    repaint();  
}


private class TAdapter extends KeyAdapter {

    public void keyReleased(KeyEvent e) {
        map.keyReleased(e);
            //mainCharacter.keyReleased(e);
    }

    public void keyPressed(KeyEvent e) {
        map.keyPressed(e);
            //mainCharacter.keyPressed(e);

    }
}

}

ОБНОВИТЬ:

вот класс Map

import java.awt.Image;
import java.awt.event.KeyEvent;

import javax.swing.ImageIcon;

public class Map {

private String map = "Map-1stCity.png";

private int dx;
private int dy;
private int x;
private int y;
private Image image;

public Map() {
    ImageIcon ii = new ImageIcon(this.getClass().getResource(map));
    image = ii.getImage();
    x = -100;
    y = -100;
}


public void move() {
    x += dx;
    y += dy;
}

public int getX() {
    return x;
}

public int getY() {
    return y;
}

public Image getImage() {
    return image;
}

public void keyPressed(KeyEvent e) {

    int key = e.getKeyCode();

    if (key == KeyEvent.VK_LEFT) {
        dx = 1;
    }

    if (key == KeyEvent.VK_RIGHT) {
        dx = -1;
    }

    if (key == KeyEvent.VK_UP) {
        dy = 1;
    }

    if (key == KeyEvent.VK_DOWN) {
        dy = -1;
    }
}

public void keyReleased(KeyEvent e) {
    int key = e.getKeyCode();

    if (key == KeyEvent.VK_LEFT) {
        dx = 0;
    }

    if (key == KeyEvent.VK_RIGHT) {
        dx = 0;
    }

    if (key == KeyEvent.VK_UP) {
        dy = 0;
    }

    if (key == KeyEvent.VK_DOWN) {
        dy = 0;
    }
}
}

Заранее всем спасибо за помощь!