tetrispanel.java

一些JAVA的小程序

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class TetrisPanel extends JPanel {


	public TetrisPanel () {
		table = new Color[15][30];
                newGame();
	}

        public Color table[][];
        private int score = 0;
          //interface between'listen for user' and
          //'move piece' threads.
        private int currentCommand = Piece.Down;

          //sets and accesses current command
	public synchronized int getCommand(int nextCommand) {
		int oldCommand = currentCommand;
		currentCommand = nextCommand;
		return oldCommand;
		}

	public void newGame ()
	{
		for (int i = 0; i  < 30; i++)
			for (int j = 0; j < 15; j++)
				table[j][i] = Color.white;
	}


	public void paintComponent(Graphics g)
	{
		super.paintComponent(g);
		for (int i = 0; i < 30; i++)
			for (int j = 0; j < 15; j++) {
				g.setColor(table[j][i]);
				g.fillRect(20+10*j, 350-10*i, 10, 10);
				}
		g.setColor(Color.blue);
		g.drawString("Score " + score, 200, 200);
	}

        public void checkScore()
	{
		for (int i = 0; i < 30; i++) {
			boolean scored = true;
			for (int j = 0; j < 15; j++)
				if (table[j][i] == Color.white)
					scored = false;
			if (scored) {
				score += 10;
				moveDown(i);
				repaint();
				i = i - 1; // check row again
				}
			}
	}

	private void moveDown (int start)
	{
		for (int i = start; i < 30; i++)
			for (int j = 0; j < 15; j++)
				if (i < 29)
					table[j][i] = table[j][i+1];
				else
					table[j][i] = Color.white;
	}
}