Cómo crear un mapa en mosaico (solo obtengo una pantalla en blanco) Java

Question

Necesito ayuda para hacer un mapa en mosaico, solo estoy obteniendo una pantalla blanca en lugar de un mapa con imágenes (mosaicos) en ella. ¿Alguien puede ayudar con eso?

World.java

package game.test.src; 

    import java.awt.Graphics; 
    import java.awt.Image; 
    import java.awt.Rectangle; 

    import javax.swing.ImageIcon; 

    public class World { 

private Rectangle[] blocks; 
private Image[] blockImg; 
private final int arrayNum = 500; 

//Block Images 
private Image BLOCK_GRASS, BLOCK_DIRT, BLOCK_STONE, BLOCK_SKY; 

private int x, y; 

public World(){ 
    BLOCK_GRASS = new ImageIcon("C:/Users/Pim/Desktop/2D game test/Game test 2/src/game/test/src/images/tile_grass").getImage(); 
    BLOCK_DIRT = new ImageIcon("C:/Users/Pim/Desktop/2D game test/Game test 2/src/game/test/src/images/tile_dirt").getImage(); 
    BLOCK_STONE = new ImageIcon("C:/Users/Pim/Desktop/2D game test/Game test 2/src/game/test/src/images/tile_stonek").getImage(); 
    BLOCK_SKY = new ImageIcon("C:/Users/Pim/Desktop/2D game test/Game test 2/src/game/test/src/images/tile_sky").getImage(); 
    blocks = new Rectangle[500]; 
    blockImg = new Image[500]; 

    loadArrays(); 
} 

private void loadArrays() 
{ 
    for(int i = 0; i < arrayNum; i++) 
    { 
     if(x >= 500){ 
      x = 0; 
      y += 20; 
     } 
     if(i >= 0 && i < 100) 
     { 
      blockImg[i] = BLOCK_SKY; 
      blocks[i] = new Rectangle(x, y, 20, 20); 
     } 
     if(i >= 100 && i < 125) 
     { 
      blockImg[i] = BLOCK_GRASS; 
      blocks[i] = new Rectangle(x, y, 20, 20); 
     } 
     if(i >= 125 && i < 225) 
     { 
      blockImg[i] = BLOCK_DIRT; 
      blocks[i] = new Rectangle(x, y, 20, 20); 
     } 
     if(i >= 225 && i < 500) 
     { 
      blockImg[i] = BLOCK_STONE; 
      blocks[i] = new Rectangle(x, y, 20, 20); 
     } 
     x += 20; 

    } 

} 

public void draw(Graphics g) 
{ 
    for(int i = 0; i< arrayNum; i++){ 
     g.drawImage(blockImg[i], blocks[i].x, blocks[i].y, null); 
    } 
} 
} 

Y aquí es GamePanel.java

package game.test.src; 

import java.awt.*; 
import java.awt.event.*; 
import java.util.logging.Level; 
import java.util.logging.Logger; 
import javax.swing.JPanel; 

public class GamePanel extends JPanel implements Runnable { 
    //Double buffering 
    private Image dbImage; 
    private Graphics dbg; 
    //JPanel variables 
    static final int GWIDTH = 500, GHEIGHT = 400; 
    static final Dimension gameDim = new Dimension(GWIDTH, GHEIGHT); 
    //Game variables 
    private Thread game; 
    private volatile boolean running = false; 
    //Game Objects 
    World world; 

    public GamePanel(){ 
     world = new World(); 

     setPreferredSize(gameDim); 
     setBackground(Color.WHITE); 
     setFocusable(true); 
     requestFocus(); 
     //Handle all key inputs from user 
     addKeyListener(new KeyAdapter(){ 
      @Override 
      public void keyPressed(KeyEvent e){ 

      } 
      @Override 
      public void keyReleased(KeyEvent e){ 

      } 
      @Override 
      public void keyTyped(KeyEvent e){ 

      } 
     }); 

    } 

    public void run(){ 
     while(running){ 
      gameUpdate(); 
      gameRender(); 
      paintScreen(); 

     } 
    } 

    private void gameUpdate(){ 
     if(running && game != null){ 

     } 
    } 

    private void gameRender(){ 
     if(dbImage == null){ // Create the buffer 
      dbImage = createImage(GWIDTH, GHEIGHT); 
      if(dbImage == null){ 
       System.err.println("dbImage is still null!"); 
       return; 
      }else{ 
       dbg = dbImage.getGraphics(); 
      } 
     } 
     //Clear the screen 
     dbg.setColor(Color.WHITE); 
     dbg.fillRect(0, 0, GWIDTH, GHEIGHT); 
     //Draw Game elements 
     draw(dbg); 
    } 

    /* Draw all game content in this method */ 
    public void draw(Graphics g){ 
     world.draw(g); 
    } 

    private void paintScreen(){ 
     Graphics g; 
     try{ 
      g = this.getGraphics(); 
      if(dbImage != null && g != null){ 
       g.drawImage(dbImage, 0, 0, null); 
      } 
      Toolkit.getDefaultToolkit().sync(); //For some operating systems 
      g.dispose(); 
     }catch(Exception e){ 
      System.err.println(e); 
     } 
    } 

    public void addNotify(){ 
     super.addNotify(); 
     startGame(); 
    } 

    private void startGame(){ 
     if(game == null || !running){ 
      game = new Thread(this); 
      game.start(); 
      running = true; 
     } 
    } 

    public void stopGame(){ 
     if(running){ 
      running = false; 
     } 
    } 
    } 

y Main.java

package game.test.src; 

import javax.swing.JFrame; 

public class Main extends JFrame 
{ 
    GamePanel gp; 

    public Main() 
    { 
     gp = new GamePanel(); 
     setSize(500, 400); 
     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     setVisible(true); 
     setResizable(false); 
     add(gp); 
    } 



    public static void main(String[] args) 
    { 
     Main m = new Main(); 
    } 

} 

Gracias por la ayuda!

p.s. lo siento por mi inglés soy holandés.

Answer 1

he modificado ligeramente su código, intente

import java.awt.*; 
import java.awt.event.KeyAdapter; 
import java.awt.event.KeyEvent; 

import javax.swing.*; 

public class World { 

    private Rectangle[] blocks; 
    private Image[] blockImg; 
    private final int arrayNum = 500; 

    //Block Images 
    private Image BLOCK_GRASS, BLOCK_DIRT, BLOCK_STONE, BLOCK_SKY; 

    private int x, y; 

    public World(){ 
    BLOCK_GRASS = new ImageIcon(Frame1.class.getResource("images/openFile.gif")).getImage(); 
    BLOCK_DIRT = new ImageIcon(Frame1.class.getResource("images/openFile.gif")).getImage(); 
    BLOCK_STONE = new ImageIcon(Frame1.class.getResource("images/openFile.gif")).getImage(); 
    BLOCK_SKY = new ImageIcon(Frame1.class.getResource("images/openFile.gif")).getImage(); 
    blocks = new Rectangle[500]; 
    blockImg = new Image[500]; 

    loadArrays(); 
    } 

    private void loadArrays() 
    { 
    for(int i = 0; i < arrayNum; i++) 
    { 
     if(x >= 500){ 
     x = 0; 
     y += 20; 
     } 
     if(i >= 0 && i < 100) 
     { 
     blockImg[i] = BLOCK_SKY; 
     blocks[i] = new Rectangle(x, y, 20, 20); 
     } 
     if(i >= 100 && i < 125) 
     { 
     blockImg[i] = BLOCK_GRASS; 
     blocks[i] = new Rectangle(x, y, 20, 20); 
     } 
     if(i >= 125 && i < 225) 
     { 
     blockImg[i] = BLOCK_DIRT; 
     blocks[i] = new Rectangle(x, y, 20, 20); 
     } 
     if(i >= 225 && i < 500) 
     { 
     blockImg[i] = BLOCK_STONE; 
     blocks[i] = new Rectangle(x, y, 20, 20); 
     } 
     x += 20; 

    } 

    } 

    public void draw(Graphics g) 
    { 
    for(int i = 0; i< arrayNum; i++){ 
     g.drawImage(blockImg[i], blocks[i].x, blocks[i].y, null); 
    } 
    } 
} 

class GamePanel extends JPanel implements Runnable { 
    //Double buffering 
    private Image dbImage; 
    private Graphics dbg; 
    //JPanel variables 
    static final int GWIDTH = 500, GHEIGHT = 400; 
    static final Dimension gameDim = new Dimension(GWIDTH, GHEIGHT); 
    //Game variables 
    private Thread game; 
    private volatile boolean running = false; 
    //Game Objects 
    World world; 

    public GamePanel(){ 
    world = new World(); 

    setPreferredSize(gameDim); 
    setBackground(Color.WHITE); 
    setFocusable(true); 
    requestFocus(); 
    //Handle all key inputs from user 
    addKeyListener(new KeyAdapter(){ 
     @Override 
     public void keyPressed(KeyEvent e){ 

     } 
     @Override 
     public void keyReleased(KeyEvent e){ 

     } 
     @Override 
     public void keyTyped(KeyEvent e){ 

     } 
    }); 

    } 

    public void run(){ 
    while(running){ 
     gameUpdate(); 
//  gameRender(); 
//  paintScreen(); 
     repaint(); 

    } 
    } 

    private void gameUpdate(){ 
    if(running && game != null){ 

    } 
    } 

    private void gameRender(){ 
    if(dbImage == null){ // Create the buffer 
     dbImage = createImage(GWIDTH, GHEIGHT); 
     if(dbImage == null){ 
     System.err.println("dbImage is still null!"); 
     return; 
     }else{ 
     dbg = dbImage.getGraphics(); 
     } 
    } 
    //Clear the screen 
    dbg.setColor(Color.WHITE); 
    dbg.fillRect(0, 0, GWIDTH, GHEIGHT); 
    //Draw Game elements 
    draw(dbg); 
    } 

    /* Draw all game content in this method */ 
    public void draw(Graphics g){ 
    world.draw(g); 
    } 
    public void paintComponent(Graphics g){ 
    super.paintComponent(g); 
    gameRender(); 
    paintScreen(g); 
    } 
    private void paintScreen(Graphics g){ 
    try{ 
//  g = this.getGraphics(); 
     if(dbImage != null && g != null){ 
     g.drawImage(dbImage, 0, 0, null); 
     } 
     Toolkit.getDefaultToolkit().sync(); //For some operating systems 
//  g.dispose(); 
    }catch(Exception e){ 
     System.err.println(e); 
    } 
    } 

    public void addNotify(){ 
    super.addNotify(); 
    startGame(); 
    } 

    private void startGame(){ 
    if(game == null || !running){ 
     game = new Thread(this); 
     game.start(); 
     running = true; 
    } 
    } 

    public void stopGame(){ 
    if(running){ 
     running = false; 
    } 
    } 
} 
class Main extends JFrame 
{ 
    GamePanel gp; 

    public Main() 
    { 
    gp = new GamePanel(); 
    setSize(500, 400); 
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    add(gp); 
    setResizable(false); 
    setVisible(true); 
    } 



    public static void main(String[] args) 
    { 
    Main m = new Main(); 
    } 

}