俄罗斯方块

package cn.hncu.games;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.Timer;

public class Tetris extends JFrame{
private TetrisPanel tp;
public Tetris() {
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setLocation(700, 200);
this.setSize(220, 275);
this.setResizable(false);
tp = new TetrisPanel();
this.getContentPane().add(tp);

//添加菜单
JMenuBar menubar = new JMenuBar();
this.setJMenuBar(menubar);
JMenu menuGame = new JMenu("游戏");
menubar.add(menuGame);

JMenuItem itemNew = new JMenuItem("新游戏");
itemNew.setActionCommand("new");
JMenuItem itemPause = new JMenuItem("暂停");
itemPause.setActionCommand("pause");
JMenuItem itemContinue = new JMenuItem("继续");
itemContinue.setActionCommand("continue");

menuGame.add(itemNew);
menuGame.add(itemPause);
menuGame.add(itemContinue);

MenuListener menuListener = new MenuListener();
itemNew.addActionListener(menuListener);
itemPause.addActionListener(menuListener);
itemContinue.addActionListener(menuListener);


//让整个JFrame添加键盘监听
this.addKeyListener( tp.listener );
}
public static void main(String[] args) {
Tetris te = new Tetris();
te.setVisible(true);
//如果在界面中添加了编辑框等会抢占焦点的控件，则需要用下面的代码
//te.requestFocus(true);//让游戏面板获得焦点--抢到键盘的监听
}

class MenuListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
if(e.getActionCommand().equals("new")){
tp.newGame();
}
}
}
}

class TetrisPanel extends JPanel{
// 方块的形状：
// 第一维代表方块类型(包括7种:S、Z、L、J、I、O、T)
// 第二维代表旋转次数
// 第三四维代表方块矩阵
// shapes[type][turnState][i] i--> block[i/4][i%4]
int shapes[][][] = new int[][][] {
/*
* 模板 { {0,0,0,0,0,0,0,0, 0,0,0,0, 0,0,0,0}, {0,0,0,0,0,0,0,0, 0,0,0,0,
* 0,0,0,0}, {0,0,0,0,0,0,0,0, 0,0,0,0, 0,0,0,0}, {0,0,0,0,0,0,0,0,
* 0,0,0,0, 0,0,0,0} }
*/
// I (※把版本1中的横条从第1行换到第2行)
{ { 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 } },
// S
{ { 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, 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 } },
// Z
{ { 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 } },
// J
{ { 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 } },
// O
{ { 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 } },
// L
{ { 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 } },
// T
{ { 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 } }
};

private int blockType;//方块类型
private int turnState;//旋转状态
private int x;//方块的位置x--列的位置--列号
private int y;//方块的位置y--行的位置--行号

private int map[][]=new int[13][23];//地图：12列22行。为防止越界，数组开成：13列23行

private Timer timer;
private int delay=1000;
public TimerKeyLister listener=new TimerKeyLister();

private int score=0;//分数

public TetrisPanel(){
newGame();
nextBlock();
//timer = new Timer(delay,listener);
//timer.start();
}

public void newGame() {
for( int i=0;i<12;i++){//走列
for(int j=0;j<21;j++){//走行
if(i==0 || i==11){//3为界面边框的格
map[i][j]=3;//按理只要用0和1以外的整数就可以，但这里用3有特殊作用--后面用
}else{
map[i][j]=0;
}
}
map[i][21]=3;//3为界面边框的格
}

if(timer!=null){
timer.stop();
}

delay=1000;
timer = new Timer(delay,listener);
timer.start();
}

private void nextBlock() {
blockType = (int)(Math.random()*1000)%7;
turnState = (int)(Math.random()*1000)%4;
x=4;
y=0;
//game Over
if(crash(x,y,blockType,turnState)==0){
timer.stop();
int option = JOptionPane.showConfirmDialog(this,
"Game Over!!，还敢来吗...");
if (option == JOptionPane.OK_OPTION) {
newGame();
} else if (option == JOptionPane.NO_OPTION) {
System.exit(0);
}
}
}

private void down() {
if( crash(x,y+1,blockType,turnState)==0 ){//注意，这里用y+1，是判断块往下掉一格后，map中对应位置是否为堆积块或框架
add(x,y,blockType,turnState);//把当前方块的信息保存到地图
nextBlock();
}else{
y++;
}
repaint();
}
private void left() {
if(x>=0){
x -= crash(x-1,y,blockType,turnState);
}
repaint();
}
private void right() {
if(x<8){
x += crash(x+1,y,blockType,turnState);
}
repaint();
}
private void turn() {
if(crash(x,y,blockType,(turnState+1)%4)==1 ){
turnState = (turnState+1)%4;
}
repaint();
}

private void add(int x, int y, int blockType, int turnState) {
for( int a=0; a<4; a++){
for(int b=0; b<4; b++){
if( shapes[blockType][turnState][a*4+b] ==1 ){
map[x+b+1][y+a] = 1;
}
}
}
tryDelLine();
}

//消行
private void tryDelLine(){
for(int b=0;b<21;b++){
int c=1;
for(int a=0;a<12;a++){
c &=map[a][b];
}
if(c==1){//有一行需要消
//依次往下移动一行
for(int d=b; d>0; d--){
for(int e=0;e<11;e++){
map[e][d] = map[e][d-1];
}
}
//加分
score +=10;
delay /=2;
timer.setDelay(delay);
}
}

}

//参数例子: 4,3,2,3
private int crash(int x, int y, int blockType, int turnState){
for( int a=0; a<4; a++){
for(int b=0; b<4; b++){
// if( (shapes[blockType][turnState][a*4+b]==1 && map[x+b+1][y+a] ==1) ||
// (shapes[blockType][turnState][a*4+b]==1 && map[x+b+1][y+a] ==3 ) ){
// }
if( (shapes[blockType][turnState][a*4+b] & map[x+b+1][y+a]) ==1 ){
return 0;//碰撞
}
}
}
return 1;//没有碰撞
}

@Override
public void paint(Graphics g) {
// blockType =6;
// turnState = 3;
// x=4;
// y=6;
super.paint(g);//消除残影

g.setColor(new Color(153,51,205));
//画当前方块
for(int j=0;j<16;j++){
if(shapes[blockType][turnState][j]==1){
g.fillRect((j%4+x+1)*10, (j/4+y)*10, 10, 10);
}
}

//画界面框架 以及 堆积块---整个地图
g.setColor(Color.red);
for( int i=0;i<12;i++){//走列
for(int j=0;j<22;j++){//走行
if(map[i][j]==3){
g.drawRect(i*10, j*10, 10, 10);
}else if(map[i][j]==1){
g.fillRect(i*10, j*10, 10, 10);
g.setColor(Color.GREEN);
g.drawRect(i*10, j*10, 10, 10);
g.setColor(Color.red);
}
}
}

//显示分数，同时为版面美观，在界面上再加点东西
// 画方块区右侧部分
g.setColor(Color.blue);
g.setFont(new Font("aa", Font.BOLD, 18));
g.drawString("score=" + score, 130, 20);
g.setFont(new Font("aa", Font.PLAIN, 13));

g.drawString("拒绝盗版游戏", 130, 70);
g.drawString("注意自我保护", 130, 90);
g.drawString("谨防受骗上当。", 125, 110);
g.drawString("适度游戏益脑，", 125, 130);
g.drawString("沉迷游戏伤身。", 125, 150);
g.drawString("合理安排时间，", 125, 170);
g.drawString("享受健康生活。", 125, 190);

}

class TimerKeyLister extends KeyAdapter implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
down();
}

@Override
public void keyPressed(KeyEvent e) {
switch(e.getKeyCode()){
case KeyEvent.VK_DOWN:
down(); break;
case KeyEvent.VK_LEFT:
left();break;
case KeyEvent.VK_RIGHT:
right();break;

case KeyEvent.VK_UP:
turn();
}
}

}

}