俄罗斯方块java

俄罗斯方块是一款经典的游戏，Java也是一门适合游戏开发的语言。下面是一个简单的俄罗斯方块游戏的Java代码示例：

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.Random;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class Tetris extends JPanel implements KeyListener {
    private static final long serialVersionUID = 1L;

    private final int WIDTH = 10;
    private final int HEIGHT = 22;
    private final int BLOCK_SIZE = 30;

    private int[][] board = new int[HEIGHT][WIDTH];

    private Tetromino currentPiece;
    private Tetromino[] pieces = {
        new Tetromino(new int[][]{{1, 1, 1, 1}}, this, Color.cyan),
        new Tetromino(new int[][]{{1, 1, 0}, {0, 1, 1}}, this, Color.orange),
        new Tetromino(new int[][]{{0, 1, 1}, {1, 1, 0}}, this, Color.blue),
        new Tetromino(new int[][]{{1, 1, 0}, {1, 1, 0}}, this, Color.yellow),
        new Tetromino(new int[][]{{1, 0, 0}, {1, 1, 1}}, this, Color.green),
        new Tetromino(new int[][]{{0, 0, 1}, {1, 1, 1}}, this, Color.pink),
        new Tetromino(new int[][]{{1, 1}, {1, 1}}, this, Color.red)
    };

    public Tetris() {
        setPreferredSize(new Dimension(WIDTH * BLOCK_SIZE, HEIGHT * BLOCK_SIZE));
        setBackground(Color.black);
        addKeyListener(this);
        newPiece();
    }

    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        for (int i = 0; i < HEIGHT; i++) {
            for (int j = 0; j < WIDTH; j++) {
                if (board[i][j] != 0) {
                    g.setColor(Color.gray);
                    g.fillRect(j * BLOCK_SIZE, i * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE);
                    g.setColor(Color.white);
                    g.drawRect(j * BLOCK_SIZE, i * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE);
                }
            }
        }
        currentPiece.draw(g);
    }

    public void keyPressed(KeyEvent e) {
        switch (e.getKeyCode()) {
            case KeyEvent.VK_LEFT:
                currentPiece.move(-1, 0);
                break;
            case KeyEvent.VK_RIGHT:
                currentPiece.move(1, 0);
                break;
            case KeyEvent.VK_DOWN:
                currentPiece.move(0, 1);
                break;
            case KeyEvent.VK_UP:
                currentPiece.rotate();
                break;
            case KeyEvent.VK_SPACE:
                currentPiece.drop();
                break;
        }
        repaint();
    }

    public void keyReleased(KeyEvent e) {}

    public void keyTyped(KeyEvent e) {}

    public int getBlockSize() {
        return BLOCK_SIZE;
    }

    public int[][] getBoard() {
        return board;
    }

    public Tetromino[] getPieces() {
        return pieces;
    }

    public void newPiece() {
        Random r = new Random();
        currentPiece = pieces[r.nextInt(pieces.length)];
        currentPiece.setX(WIDTH / 2 - currentPiece.getPiece()[0].length / 2);
        currentPiece.setY(0);
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame("Tetris");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setResizable(false);
        frame.add(new Tetris(), BorderLayout.CENTER);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}

这个代码示例中，我们使用了Java Swing库进行界面的开发，并且使用了一个Tetromino类来表示俄罗斯方块中的方块。在程序中，我们使用了一个二维数组来表示游戏区域中的方块，并且通过键盘事件来控制方块的移动和旋转。