ADD file via upload

scr/NextBlockPanel.java

@@ -0,0 +1,96 @@
+package tetris;
+
+import javax.swing.*;
+import java.awt.*;
+
+public class NextBlockPanel extends JPanel {
+    private Block nextBlock;
+    private GamePanel gamePanel;
+    private JLabel scoreLabel;
+    private final ResourceManager resManager = ResourceManager.getInstance();
+
+    public NextBlockPanel() {
+        setPreferredSize(new Dimension(200, 600));
+        setLayout(new BorderLayout());
+        initUI();
+    }
+
+    public void setGamePanel(GamePanel gamePanel) {
+        this.gamePanel = gamePanel;
+    }
+
+    private static final int[] SPEED_LEVELS = {800, 400, 200};
+
+    private void initUI() {
+        JPanel previewPanel = new JPanel() {
+            @Override
+            protected void paintComponent(Graphics g) {
+                super.paintComponent(g);
+                if (nextBlock == null) return;
+
+                int[][] shape = nextBlock.getShape();
+                int startX = (getWidth() - shape[0].length * 30) / 2;
+                int startY = (getHeight() - shape.length * 30) / 2;
+
+                for (int i = 0; i < shape.length; i++) {
+                    for (int j = 0; j < shape[i].length; j++) {
+                        if (shape[i][j] == 1) {
+                            int type = nextBlock.getType();
+                            Image blockImage = resManager.getBlockImage(type);
+                            if (blockImage != null) {
+                                g.drawImage(blockImage, startX + j * 30, startY + i * 30, 29, 29, this);
+                            }
+                        }
+                    }
+                }
+            }
+
+            @Override
+            public Dimension getPreferredSize() {
+                return new Dimension(150, 150);
+            }
+        };
+        previewPanel.setBorder(BorderFactory.createTitledBorder("下一个方块"));
+
+        scoreLabel = new JLabel("得分: 0", SwingConstants.CENTER);
+        scoreLabel.setFont(new Font("微软雅黑", Font.BOLD, 16));
+
+        JPanel controlPanel = new JPanel(new GridLayout(4, 1, 0, 10));
+        controlPanel.setBorder(BorderFactory.createEmptyBorder(20, 10, 20, 10));
+
+        JComboBox<String> combo = new JComboBox<>(new String[]{"简单", "中等", "困难"});
+        JButton restartBtn = new JButton("重新开始");
+
+        combo.addActionListener(e -> {
+            int index = combo.getSelectedIndex();
+            gamePanel.setFallSpeed((index >= 0 && index < SPEED_LEVELS.length) ? SPEED_LEVELS[index] : 500);
+            gamePanel.requestFocusInWindow();
+        });
+
+        restartBtn.addActionListener(e -> {
+            gamePanel.newGame();
+            updateScore();
+            gamePanel.requestFocusInWindow();
+        });
+
+        controlPanel.add(scoreLabel);
+        controlPanel.add(new JLabel("难度设置:"));
+        controlPanel.add(combo);
+        controlPanel.add(restartBtn);
+
+        add(previewPanel, BorderLayout.CENTER);
+        add(controlPanel, BorderLayout.SOUTH);
+
+        setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
+        revalidate();
+    }
+
+    public void setNextBlock(Block block) {
+        nextBlock = block;
+        repaint();
+    }
+
+    public void updateScore() {
+        SwingUtilities.invokeLater(() -> scoreLabel.setText("得分: " + gamePanel.getScore()));
+    }
+}