BufferedImage と ImageIO を使用して、スプライト メッシュからスプライト イメージを作成しようとしています。スプライト画像の読み込みと保存を処理する別のクラスがあります。これが問題のようです。ImageIO を使用してスプライト メッシュを BuffereImage にロードすると、何らかの理由で断続的に、paintComponent が実行されなくなります。ただし、プログラムが実際に読み込まれると、プログラムは正しく表示されますが、キー リスナーは機能しなくなります。それが役立つ場合は、NetBeans 7.3 を使用しています。
package breakout;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.Random;
public class GamePanel extends JPanel implements Runnable {
private Paddle paddle;
private Breakout boRef;
private Circle ball;
private Graphics2D g2d, bufferedGraphics;
private BufferedImage buffer;
private Images images;
private final int WIDTH = Constants.WINDOW_WIDTH;
private final int HEIGHT = Constants.WINDOW_HEIGHT;
private ArrayList<Block> blockList;
private int numBlocks, blockRows, blockCols, ballXInc, ballYInc, blockPadding;
private int totalWidth, blockX, blockY;
private Thread ballThread;
private boolean started, gameOver;
private String gameOverText;
private Random rand;
public GamePanel( Breakout ref ) {
boRef = ref;
images = new Images(); <-- Problem
numBlocks = 12;
blockRows = 4;
blockCols = 3;
blockList = new ArrayList<>();
blockY = 100;
blockPadding = 5;
totalWidth = ( blockCols * Block.WIDTH ) + ( ( blockCols - 1 ) * blockPadding );
blockX = ( WIDTH / 2 ) - ( totalWidth / 2 ) - 60;
setupBlocks();
rand = new Random();
gameOverText = "";
started = false;
gameOver = false;
buffer = new BufferedImage( WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB );
bufferedGraphics = buffer.createGraphics();
bufferedGraphics.setBackground( Color.LIGHT_GRAY );
ball = new Circle( 250, 593, 6 );
ball.setColor( Color.BLUE );
ballThread = new Thread( this );
ballXInc = 1;
ballYInc = -1;
paddle = new Paddle( this, 200, 600, 100, 15, Color.WHITE, Color.BLACK );
addKeyListener( new KeyHandler() );
setLayout( new BorderLayout() );
setFocusable( true );
requestFocus();
System.out.println(" END" );
}
private void setupBlocks() {
int xPos = Block.WIDTH + blockPadding, yPos = Block.HEIGHT + blockPadding;
int xInc = 1, yInc = 1;
for( int y = 0; y < blockRows; ++y, yInc++ ) {
for( int x = 0; x < blockCols; ++x, xInc++ ) {
blockList.add( new Block( xPos * xInc + blockX, yPos * yInc + blockY ) );
}
xInc = 1;
}
}
@Override public void paintComponent( Graphics g ) {
super.paintComponent( g );
g2d = (Graphics2D)g;
bufferedGraphics.clearRect( 0, 0, WIDTH, HEIGHT );
System.out.println( "HELLO" );
//bufferedGraphics.drawImage( images.getImage(), 100, 100, images.getImage().getWidth(), images.getImage().getHeight(), null ); <-- DrawSprite
if( !gameOver ) {
for( Block b : blockList ) {
b.draw( bufferedGraphics );
}
ball.draw( bufferedGraphics );
paddle.draw( bufferedGraphics );
} else {
bufferedGraphics.setFont( new Font( "Times New Roman", Font.BOLD, 48 ) );
bufferedGraphics.drawString( gameOverText, WIDTH / 2 - 130, HEIGHT / 2);
}
g2d.drawImage( buffer, 0, 0, WIDTH, HEIGHT, null );
}
private class KeyHandler extends KeyAdapter {
@Override public void keyPressed( KeyEvent e ) {
if( paddle.x - 10 > -10 && e.getKeyCode() == KeyEvent.VK_LEFT ) {
paddle.x -= 10;
if( !started ) {
ball.setX( ball.getX() - 10 );
}
} else if( paddle.x + paddle.width + 20 < WIDTH && e.getKeyCode() == KeyEvent.VK_RIGHT ) {
paddle.x += 10;
if( !started ) {
ball.setX( ball.getX() + 10 );
}
}
if( e.getKeyCode() == KeyEvent.VK_SPACE ) {
if( !started ) {
ballThread.start();
started = true;
} else if( gameOver ) {
restart();
}
}
repaint();
}
}
}
package breakout;
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
import java.io.File;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
import java.awt.Rectangle;
import java.io.IOException;
public class Images {
private BufferedImage texture, tex;
private BufferedImage [] images;
private String meshPath = "texture\\textures.png";
private Raster imgRaster;
private WritableRaster imgWritableRaster;
public static final int TEX_WIDTH = 16;
public static final int TEX_HEIGHT = 8;
public Images() {
images = new BufferedImage[1];
try {
texture = ImageIO.read( new File( meshPath ) ); <-- Seems to be the problem
} catch( IOException e ) {
System.out.println( e.getMessage() );
}
imgRaster = texture.getData( new Rectangle( TEX_WIDTH * 2, 0, TEX_WIDTH, TEX_HEIGHT ) );
imgWritableRaster = imgRaster.createCompatibleWritableRaster();
tex = new BufferedImage( texture.getColorModel(), imgWritableRaster, false, null );
images[0] = tex;
}
public BufferedImage getImage() {
return images[0];
}
}