我需要一些帮助来制作平铺地图，我只是得到一个白屏而不是带有图像（平铺）的地图。有人可以帮忙吗？
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);
}
}
}
这是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;
}
}
}
和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();
}
}