JAVA——俄罗斯方块

package Tetris_JCoder;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.*;

public class Tetris extends JFrame{

    public Tetris() {
        Block NewBlock = new Block();
        addKeyListener(NewBlock);
        add(NewBlock);
    }

    public static void main(String[] args) {
        Tetris window = new Tetris();
        JMenuBar menu = new JMenuBar();
        window.setJMenuBar(menu);
        JMenu game = new JMenu("Game...");
        JMenu help = new JMenu("Help...");
        JMenuItem newgame = game.add("NewGame");
        JMenuItem about = help.add("About");
        menu.add(game);
        menu.add(help);
        window.setLocation(100,100);
        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        window.setSize(600,600);
        window.setTitle("Tetris By-J_Coder");
        window.setVisible(true);
        window.setResizable(false);
    }
}

class Block extends JPanel implements KeyListener {
    static int diff = 500;
    Timer timer = new Timer(diff, new TimerListener());
    static int isST = 1;
    Block() {
        ANewBlock();
        init();
        walls();
        timer = new Timer(diff, new TimerListener());
        timer.start();
    }

    static int type = -1;
    static int dirc = -1;
    static int nowX;
    static int nowY;
    static int secT;
    static int secD;
    static int score = 0;
    static int flag = 0;
    static int mmp[][] = new int[50][50];
    static String stp = "";
    static int boxes[][][]  = {
            { { 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0 },
              { 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0 },
              { 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0 },
              { 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0 } },//shape I
            { { 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
              { 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0 },
              { 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
              { 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0 } },//shape S
            { { 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
              { 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0 },
              { 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
              { 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0 } },//shape Z
            { { 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0 },
              { 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
              { 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0 },
              { 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 } },//shape J
            { { 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0 },
              { 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
              { 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0 },
              { 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 } },//shape L
            { { 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
              { 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
              { 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
              { 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } },//shape O
            { { 0, 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
              { 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0 },
              { 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
              { 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0 } } //shape T
    };
    public void init() {
        for(int i = 0;i < 50;i ++) {
            for(int j = 0;j < 50;j ++) {
                mmp[i][j] = 0;
            }
        }
    }

    public void walls() {
        for(int i = 0;i < 12;i ++) {
            mmp[i][21] = -1;
        }
        for (int i = 0;i < 22;i ++) {
            mmp[11][i] = -1;
            mmp[0][i] = -1;
        }
    }

    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        for (int j = 0; j < 16; j ++) {
            if (boxes[type][dirc][j] == 1) {
                g.fillRect((j % 4 + nowX + 1) * 20, (j / 4 + nowY) * 20, 20, 20);
            }
        }
        for (int j = 0; j < 22; j ++) {
            for (int i = 0; i < 12; i ++) {
                if (mmp[i][j] == 1) {
                    g.fillRect(i * 20, j * 20, 20, 20);
                }
                if (mmp[i][j] == -1) {
                    g.drawRect(i * 20, j * 20, 20, 20);
                }
            }
        }
        Font f1 = new Font(null,Font.PLAIN,18);
        Font f2= new Font(null,Font.PLAIN,30);
        g.setFont(f1);
        g.drawString("Press up button to change the shape", 250, 200);
        g.drawString("Press left button to move left", 250, 225);
        g.drawString("Press right button to move right", 250, 250);
        g.drawString("Press down button to drop faster", 250, 275);
        g.drawString("Press ‘P‘ to pause/continue the game", 250, 300);
        //g.drawString("Press ‘K‘ to speed-up", 250, 325);
        //g.drawString("Press ‘L‘ to speed-down", 250, 350);
        g.drawString("Happy game,happy life !", 350, 375);
        g.drawString("Code changes the world !", 350, 400);
        g.setFont(f2);
        g.setColor(Color.RED);
        g.drawString(stp,60,150);
        g.setColor(Color.BLACK);
        g.drawString("Score : " + score, 20, 480);
        g.drawRect(240, 0, 100, 100);
        g.setFont(f1);
        g.drawString("NEXT",270,120);
        for (int j = 0; j < 16; j ++) {
            if (boxes[secT][secD][j] == 1) {
                g.fillRect(240 + (j % 4 + 1) * 20,20 + (j / 4) * 20, 20, 20);
            }
        }
    }

    public void keyPressed(KeyEvent e) {
        switch(e.getKeyCode()) {
            case KeyEvent.VK_DOWN:
                moveDown();
                break;
            case KeyEvent.VK_UP:
                shapeChange();
                break;
            case KeyEvent.VK_RIGHT:
                moveRight();
                break;
            case KeyEvent.VK_LEFT:
                moveLeft();
                break;
            case KeyEvent.VK_P:
                if(isST == 1) {timer.stop();stp = "PAUSED";}
                else {timer.start();stp = "";}
                isST = -isST;
                repaint();
                break;
                /*
            case KeyEvent.VK_K: //  speed on
                if(diff > 50) {diff -= 50;}
                break;
            case KeyEvent.VK_L: //  speed off
                if(diff < 1000) {diff += 50;}
                break;
                */
        }
    }

    public void moveLeft() {
        if (isOK(nowX - 1,nowY) == 1) {
            nowX --;
        }
        repaint();
    }

    public void moveRight() {
        if (isOK(nowX + 1,nowY) == 1) {
            nowX ++;
        }
        repaint();
    }

    public void moveDown() {
        int OK = isOK(nowX, nowY + 1);
        if (OK == 1) {
            nowY ++;
            dltLine();
        }
        else {
            addToMap(nowX,nowY);
            ANewBlock();
            dltLine();
        }
        repaint();
    }

    public void shapeChange(){
        int t = dirc;
        dirc ++;
        dirc %= 4;
        int OK = isOK(nowX,nowY);
        //System.out.println(OK);
        if(OK == 0) {
            dirc = t;
        }
        repaint();
    }

    public void keyReleased(KeyEvent e) {}
    public void keyTyped(KeyEvent e) {}

    public void ANewBlock() {
        if(gameover() != 0) {
            init();
            walls();

            if(score <= 1000) {
                JOptionPane.showMessageDialog(null, "You are so weak !","Game Over",JOptionPane.PLAIN_MESSAGE);
            }
            else if(score <= 10000) {
                JOptionPane.showMessageDialog(null, "Just so so !","Game Over",JOptionPane.PLAIN_MESSAGE);
            }
            else if(score <= 100000) {
                JOptionPane.showMessageDialog(null, "Nice Work !","Game Over",JOptionPane.PLAIN_MESSAGE);
            }
            else if(score <= 1000000) {
                JOptionPane.showMessageDialog(null, "You are awesome !","Game Over",JOptionPane.PLAIN_MESSAGE);
            }
            else if(score <= 10000000) {
                JOptionPane.showMessageDialog(null, "Incredible !","Game Over",JOptionPane.PLAIN_MESSAGE);
            }
            else {
                JOptionPane.showMessageDialog(null, "What a crazy man !","Game Over",JOptionPane.PLAIN_MESSAGE);
            }
            score = 0;
        }
        if(type == -1 && dirc == -1) {
            type = (int)(Math.random() * 10000) % 7;
            dirc = (int)(Math.random() * 10000) % 4;
            secT = (int)(Math.random() * 10000) % 7;
            secD = (int)(Math.random() * 10000) % 4;
        }
        else {
            type = secT;
            dirc = secD;
            secT = (int)(Math.random() * 10000) % 7;
            secD = (int)(Math.random() * 10000) % 4;
        }
        nowX = 4;nowY  = 0;
    }

    public void addToMap(int x, int y) {
        int k = 0;
        for (int i = 0; i < 4; i ++) {
            for (int j = 0; j < 4; j ++) {
                if (mmp[x + j + 1][y + i] == 0) {
                    mmp[x + j + 1][y + i] = boxes[type][dirc][k];
                }
                k ++;
            }
        }
    }

    public int isOK(int x,int y) {
        for (int i = 0; i < 4; i ++) {
            for (int j = 0; j < 4; j ++) {
                if (((boxes[type][dirc][i * 4 + j] == 1) && (mmp[x + j + 1][y + i] == 1))
                        || ((boxes[type][dirc][i * 4 + j] == 1) && (mmp[x + j + 1][y + i] == -1))) {
                    return 0;
                }
            }
        }
        return 1;
    }

    public int gameover() {
        int ans = 0;
        for(int i =1;i<= 10;i ++) {
            ans += mmp[i][1];
        }
        return ans;
    }

    public void dltLine() {
        int t = 0;
        int lines = 0;
        for (int j = 0; j < 22; j ++) {
            for (int i = 0; i < 12; i ++) {
                if (mmp[i][j] == 1) {
                    t ++;
                    if (t == 10) {
                        lines ++;
                        for (int k = j; k > 0; k --) {
                            for (int p = 0; p < 11; p ++) {
                                mmp[p][k] = mmp[p][k - 1];
                            }
                        }
                    }
                }
            }
            t = 0;
        }
        if(lines == 1) {score += 100;}
        else if(lines == 2) {score += 300;}
        else if(lines == 3) {score += 600;}
        else if(lines == 4) {score += 1000;}

    }

    class TimerListener implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            repaint();
            //System.out.println("t");
            int OK = isOK(nowX, nowY + 1);
            if(OK == 1) {
                nowY ++;
                dltLine();
            }
            else {
                if(flag == 1) {
                    addToMap(nowX,nowY);
                    dltLine();
                    ANewBlock();
                    flag = 0;
                }
                flag = 1;
            }
        }
    }

}

原文地址：https://www.cnblogs.com/love-fromAtoZ/p/9704116.html